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Office of Scientific and Technical Information
Edison Configuration
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Configuration Configuration NERSC's newest supercomputer, named Edison after U.S. inventor and businessman Thomas Alva Edison, will have a peak performance of more than 2 petaflops...
Alternate configuration
SciTech Connect
These vugraphs present some configurations for the Tiber tokamak. The presentation concludes that the number of components exposed to the plasma vacuum should be minimized. (JDH)
Lousteau, D.C.
Circular symmetry in the Hitchin system
E-Print Network (OSTI)
To study circularly symmetric field configurations in the SU(2) Hitchin system an SO(2) symmetry, [J_3, \\phi]=0 and [J_3, A_{\\pm}]=\\pm A_{\\pm}, is imposed on the Higgs scalar \\phi and the gauge fields A_{\\pm} of the system, respectively, where J_3 is a sum of the third components of the orbital angular momenta and the generators of the SU(2). The circular symmetry and the equation \\bar{D}\\phi=0 yield onstant, generally nonzero, vacuum expectation values for {\\rm Tr}(\\phi^{2}). The equation 4F_{z\\bar{z}}=[\\phi, \\phi^{*}] yields a system of differential equations which govern the circularly symmetric field configurations and an exact solution to these equations in a pure gauge form with nontrivial Higgs scalar is obtained.
Masaru Kamata
Shock Waves in Plane Symmetric Spacetimes
We consider Einstein's equations coupled to the Euler equations in plane symmetry, with compact spatial slices and constant mean curvature time. We show that for a wide variety of equations of state and a large class of initial data, classical solutions break down in finite time. The key mathematical result is a new theorem on the breakdown of solutions of systems of balance laws. We also show that an extension of the solution is possible if the spatial derivatives of the energy density and the velocity are bounded, indicating that the breakdown is really due to the formation of shock waves.
Alan D. Rendall; Fredrik St�hl
Module Configuration
A stand alone battery module including: (a) a mechanical configuration; (b) a thermal management configuration; (c) an electrical connection configuration; and (d) an electronics configuration. Such a module is fully interchangeable in a battery pack assembly, mechanically, from the thermal management point of view, and electrically. With the same hardware, the module can accommodate different cell sizes and, therefore, can easily have different capacities. The module structure is designed to accommodate the electronics monitoring, protection, and printed wiring assembly boards (PWAs), as well as to allow airflow through the module. A plurality of modules may easily be connected together to form a battery pack. The parts of the module are designed to facilitate their manufacture and assembly.
Oweis, Salah (Ellicott City, MD); D' Ussel, Louis (Bordeaux, FR); Chagnon, Guy (Cockeysville, MD); Zuhowski, Michael (Annapolis, MD); Sack, Tim (Cockeysville, MD); Laucournet, Gaullume (Paris, FR); Jackson, Edward J. (Taneytown, MD)
Circular, confined distribution for charged particle beams
DOE Patents (OSTI)
A charged particle beam line is formed with magnetic optics that manipulate the charged particle beam to form the beam having a generally rectangular configuration to a circular beam cross-section having a uniform particle distribution at a predetermined location. First magnetic optics form a charged particle beam to a generally uniform particle distribution over a square planar area at a known first location. Second magnetic optics receive the charged particle beam with the generally square configuration and affect the charged particle beam to output the charged particle beam with a phase-space distribution effective to fold corner portions of the beam toward the core region of the beam. The beam forms a circular configuration having a generally uniform spatial particle distribution over a target area at a predetermined second location. 26 figs.
Garnett, R.W.; Dobelbower, M.C.
A charged particle beam line is formed with magnetic optics that manipulate the charged particle beam to form the beam having a generally rectangular configuration to a circular beam cross-section having a uniform particle distribution at a predetermined location. First magnetic optics form a charged particle beam to a generally uniform particle distribution over a square planar area at a known first location. Second magnetic optics receive the charged particle beam with the generally square configuration and affect the charged particle beam to output the charged particle beam with a phase-space distribution effective to fold corner portions of the beam toward the core region of the beam. The beam forms a circular configuration having a generally uniform spatial particle distribution over a target area at a predetermined second location.
Garnett, Robert W. (Los Alamos, NM); Dobelbower, M. Christian (Toledo, OH)
Configuration Configuration Configuration NERSC's newest supercomputer, named Edison after U.S. inventor and businessman Thomas Alva Edison, will have a peak performance of more than 2 petaflops (PF, or 1015 floating point operations per second) when fully installed in 2013. The integrated storage system will have more than 6 petabytes (PB) of storage with a peak I/O bandwidth of 140 gigabytes (GB) per second. The product is known as a Cray XC30 (internal name "Cascade"), and the NERSC acquistion project is known as "NERSC 7." Edison will be installed in two phases. Phase I Installation: 4Q 2012 Early User Access: Started in February 2013. All users were enabled March 2, 2013. System Overview Cray Cascade supercomputer 664 computes nodes with 64 GB memory per node
Franklin Configuration
Configuration Configuration Franklin Configuration Franklin is a Cray XT4 with a peak performance of 352 TFlops, 38,288 processor cores, 78 TB of memory, and 436 TB of scratch disk space. Franklin was ranked as the world's eighth most powerful supercomputer in November 2008, and was No. 26 on the November 2010 Top 500 List. Quad CoreAMDOpteronprocessor Compute Nodes Franklin has 9,572 compute nodes, each with a quad-core AMD 'Budapest' 2.3 GHz processor. Read More » Login Nodes Franklin has 10 internal login nodes and 1 external login node. Read More » Files systems The Franklin system has 4 different file systems mounted which provide different levels of disk storage, I/O performance and file permanence. There are two Lustre file systems each with a peak performance of 17
Configuration Configuration Configuration NERSC's newest supercomputer, named Edison after U.S. inventor and businessman Thomas Alva Edison, has a peak performance of 2.39 petaflops/sec, 124,608 compute cores for running scientific applications, 332 Terabytes of memory, and 7.5 Petabytes of online disk storage with a peak I/O bandwidth of 168 gigabytes (GB) per second. The product is known as a Cray XC30 (internal name "Cascade"), and the NERSC acquistion project is known as "NERSC 7." System Overview Cray XC30 supercomputer Peak performance 2.39 petaflops/sec Sustained application performance on NERSC SSP codes: 258 Tflop/s (vs. 144 Tflop/s for Hopper) 5,192 computes nodes, 124,608 cores in total Cray Aries high-speed interconnect with Dragon Flay topoplogy (0.25 μs to 3.7 μs MPI latency, ~8GB/sec MPI bandwidth)
Carver Configuration
Configuration Configuration Configuration Overview Carver, a liquid-cooled IBM iDataPlex system, has 1202 compute nodes (9,984 processor cores). This represents a theoretical peak performance of 106.5 Teraflops/sec. Note that the above node count includes hardware that is dedicated to various strategic projects and experimental testbeds (e.g., Hadoop). As such, not all 1202 nodes will be available to all users at all times. All nodes are interconnected by 4X QDR InfiniBand technology, providing 32 Gb/s of point-to-point bandwidth for high-performance message passing and I/O. Compute Nodes 1,120 nodes each have two quad-core Intel Xeon X5550 ("Nehalem") 2.67 GHz processors (eight cores/node); 80 nodes each have two six-core Intel Xeon X5650 ("Westmere") 2.67 GHz processors (12 cores/node). 960 of the
Solar flare emissions in the chromosphere often appear as elongated ribbons on both sides of the magnetic polarity inversion line (PIL), which has been regarded as evidence of a typical configuration of magnetic reconnection. However, flares having a circular ribbon have rarely been reported, although it is expected in the fan-spine magnetic topology involving reconnection at a three-dimensional (3D) coronal null point. We present five circular ribbon flares with associated surges, using high-resolution and high-cadence H{alpha} blue wing observations obtained from the recently digitized films of Big Bear Solar Observatory. In all the events, a central parasitic magnetic field is encompassed by the opposite polarity, forming a circular PIL traced by filament material. Consequently, a flare kernel at the center is surrounded by a circular flare ribbon. The four homologous jet-related flares on 1991 March 17 and 18 are of particular interest, as (1) the circular ribbons brighten sequentially, with cospatial surges, rather than simultaneously, (2) the central flare kernels show an intriguing 'round-trip' motion and become elongated, and (3) remote brightenings occur at a region with the same magnetic polarity as the central parasitic field and are co-temporal with a separate phase of flare emissions. In another flare on 1991 February 25, the circular flare emission and surge activity occur successively, and the event could be associated with magnetic flux cancellation across the circular PIL. We discuss the implications of these observations combining circular flare ribbons, homologous jets, and remote brightenings for understanding the dynamics of 3D magnetic restructuring.
Wang Haimin; Liu Chang, E-mail: firstname.lastname@example.com [Space Weather Research Laboratory, Center for Solar-Terrestrial Research, New Jersey Institute of Technology, University Heights, Newark, NJ 07102-1982 (United States)
In-Plane Compressive Properties of Hybrid Dyneema�/Carbon ...
Science Conference Proceedings (OSTI)
Presentation Title, In-Plane Compressive Properties of Hybrid Dyneema�/ Carbon Fiber Reinforced Polymer Matrix Composites. Author(s), Shahram Amini, John�...
Circular free-electron laser
A high efficiency, free electron laser is described utilizing a circular relativistic electron beam accelerator and a circular whispering mode optical waveguide for guiding optical energy in a circular path in the circular relativistic electron beam accelerator such that the circular relativistic electron beam and the optical energy are spatially contiguous in a resonant condition for free electron laser operation. Both a betatron and synchrotron are disclosed for use in the present invention. A free electron laser wiggler is disposed around the circular relativistic electron beam accelerator for generating a periodic magnetic field to transform energy from the circular relativistic electron beam to optical energy.
Brau, C.A.; Kurnit, N.A.; Cooper, R.K.
A high efficiency, free electron laser utilizing a circular relativistic electron beam accelerator and a circular whispering mode optical waveguide for guiding optical energy in a circular path in the circular relativistic electron beam accelerator such that the circular relativistic electron beam and the optical energy are spatially contiguous in a resonant condition for free electron laser operation. Both a betatron and synchrotron are disclosed for use in the present invention. A free electron laser wiggler is disposed around the circular relativistic electron beam accelerator for generating a periodic magnetic field to transform energy from the circular relativistic electron beam to optical energy.
Brau, Charles A. (Los Alamos, NM); Kurnit, Norman A. (Santa Fe, NM); Cooper, Richard K. (Los Alamos, NM)
OMB Circular A-76 (Revised)
Energy.gov (U.S. Department of Energy (DOE)) Indexed Site
EXECUTIVE OFFICE OF THE PRESIDENT EXECUTIVE OFFICE OF THE PRESIDENT OFFICE OF MANAGEMENT AND BUDGET WASHINGTON, DC 20503 May 29, 2003 CIRCULAR NO. A-76 (REVISED) TO THE HEADS OF EXECUTIVE DEPARTMENTS AND ESTABLISHMENTS SUBJECT: Performance of Commercial Activities 1. Purpose. This circular establishes federal policy for the competition of commercial activities. 2. Supersession. This circular supersedes Office of Management and Budget (OMB) Circular No. A-76 (Revised 1999), August 4, 1983; Circular No. A-76 Revised Supplemental Handbook (Revised 2000), March 1996; Office of Federal Procurement Policy Letter 92-1, "Inherently Governmental Functions," September 23, 1992; and OMB Transmittal Memoranda 1 through 25, Performance of Commercial Activities. 3. Authority. Reorganization Plan No. 2 of 1970 (31 U.S.C. § 1111); Executive Order 11541; the Office
Federal Acquisition Circulars 17, 18 and 20 | Department of Energy
Acquisition Circulars 17, 18 and 20 Federal Acquisition Circulars 17, 18 and 20 Policy Flash 2007-61 Federal Acquisition Circulars 17, 18 and 20 More Documents & Publications...
Firewall Configuration Errors Revisited
The first quantitative evaluation of the quality of corporate firewall configurations appeared in 2004, based on Check Point FireWall-1 rule-sets. In general that survey indicated that corporate firewalls were often enforcing poorly written rule-sets, containing many mistakes. The goal of this work is to revisit the first survey. The current study is much larger. Moreover, for the first time, the study includes configurations from two major vendors. The study also introduce a novel "Firewall Complexity" (FC) measure, that applies to both types of firewalls. The findings of the current study indeed validate the 2004 study's main observations: firewalls are (still) poorly configured, and a rule-set's complexity is (still) positively correlated with the number of detected risk items. Thus we can conclude that, for well-configured firewalls, ``small is (still) beautiful''. However, unlike the 2004 study, we see no significant indication that later software versions have fewer errors (for both vendors).
Wool, Avishai
Obfuscation (IND-CPA Security Circular Security)
Obfuscation (IND-CPA Security Circular Security) (Draft Version, 24 October 2013) email@example.com 2 Aarhus University, Denmark, firstname.lastname@example.com Abstract Circular security is an important notion for public-key encryption schemes and is needed by several cryptographic protocols. In circular security
International Association for Cryptologic Research (IACR)
Supersonic Aerodynamic Characteristics of a Circular Body Earth-to-Orbit Vehicle
The circular body configuration is a generic single- or multi-stage reusable Earth-to-orbit transport. A thick clipped-delta wing is the major lifting surface. For directional control, three different vertical fin arrangements were investigated: a conventional ...
Ware George M.; Engelund Walter C.; MacConochie Ian O.
PDSF Hardware Configuration
Configuration Configuration Hardware Configuration Interactive (login) Nodes This page describes the interactive (login) nodes at PDSF. Read More » Compute Nodes Information about the PDSF compute (batch) nodes. Read More » Data Transfer Nodes This page describes the grid and data transfer nodes at PDSF. Read More » Eliza File Systems The eliza file systems at PDSF are used for bulk file storage. Read More » Other File Systems This page describes home directories, scratch space, /common and NGF. Read More » Specific Group Hardware This page describes the extra hardware used by the various scientific groups that use PDSF. Read More » PDSF at a Glance Interactive Nodes 4 pdsf.nersc.gov pdsf[1-4].nersc.gov Compute Nodes 232 2632 Cores GPFS Filesystems 835TB Eliza[1-18] Local Disk
Electronically configured battery pack
DOE Green Energy (OSTI)
Battery packs for portable equipment must sometimes accommodate conflicting requirements to meet application needs. An electronically configurable battery pack was developed to support two highly different operating modes, one requiring very low power consumption at a low voltage and the other requiring high power consumption at a higher voltage. The configurable battery pack optimizes the lifetime and performance of the system by making the best use of all available energy thus enabling the system to meet its goals of operation, volume, and lifetime. This paper describes the cell chemistry chosen, the battery pack electronics, and tradeoffs made during the evolution of its design.
Kemper, D.
Circular permutant GFP insertion folding reporters
Provided are methods of assaying and improving protein folding using circular permutants of fluorescent proteins, including circular permutants of GFP variants and combinations thereof. The invention further provides various nucleic acid molecules and vectors incorporating such nucleic acid molecules, comprising polynucleotides encoding fluorescent protein circular permutants derived from superfolder GFP, which polynucleotides include an internal cloning site into which a heterologous polynucleotide may be inserted in-frame with the circular permutant coding sequence, and which when expressed are capable of reporting on the degree to which a polypeptide encoded by such an inserted heterologous polynucleotide is correctly folded by correlation with the degree of fluorescence exhibited.
Waldo, Geoffrey S. (Santa Fe, NM); Cabantous, Stephanie (Los Alamos, NM)
Waldo, Geoffrey S; Cabantous, Stephanie
Waldo, Geoffrey S.; Cabantous, Stephanie
Experimental evaluation of the in-plane seismic behavior of store-front window systems
J. , (1960). Behavior of window panels under in-planeC. , (1997). Behavior of window glass panels duringBehavior of Store-front Window Systems A thesis submitted in
Eva, Charles Almond
HTAR Client Configuration and Installation
Configuration and Installation Configuration and Installation HTAR Configuration and Installation HTAR is an archival utility similar to gnu-tar that allows for the archiving and extraction of local files into and out of HPSS. Configuration Instructions This distribution has default configuration settings which will work for most environments. If you want to use the default values (recommended) you can skip to the section labeled INSTALLATION INSTRUCTIONS. In certain environments, for example if your installation is on a machine which has more than one network interface, you may want to change some of these default settings. To help with this, an interactive Configure script is provided. To use it do $ ./Configure prior to installing. Configure will provide a description of the options
Policy Flash 2013-27 Federal Acquisition Circular (FAC) 2005...
7 Federal Acquisition Circular (FAC) 2005-65 Policy Flash 2013-27 Federal Acquisition Circular (FAC) 2005-65 Attached is Policy Flash 2013-27 Federal Acquisition Circular (FAC)...
Policy Flash 2013-37 Federal Acquisition Circular (FAC) 2005...
7 Federal Acquisition Circular (FAC) 2005-66 Policy Flash 2013-37 Federal Acquisition Circular (FAC) 2005-66 Attached is Policy Flash 2013-37 Federal Acquisition Circular (FAC)...
Power converter connection configuration
EMI shielding is provided for power electronics circuits and the like via a direct-mount reference plane support and shielding structure. The thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support forms a shield from both external EMI/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as improved terminal configurations. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.
Beihoff, Bruce C. (Wauwatosa, WI); Kehl, Dennis L. (Milwaukee, WI); Gettelfinger, Lee A. (Brown Deer, WI); Kaishian, Steven C. (Milwaukee, WI); Phillips, Mark G. (Brookfield, WI); Radosevich, Lawrence D. (Muskego, WI)
Substation Configuration Reliability 1 Reliability of Substation Configurations
-Repairable Components," Power Learn Electric Power Engineering Education, Module PE.PAS.U15.5, 2005. #12;SubstationSubstation Configuration Reliability 1 Reliability of Substation Configurations Daniel Nack, Iowa substation, it still contains what could be described as weak points or points of failure that would lead
McCalley, James D.
Recurrent Rotor-Router Configurations
We prove the existence of recurrent initial configurations for the rotor walk on many graphs, including Z^d, and planar graphs with locally finite embeddings. We also prove that recurrence and transience of rotor walks are invariant under changes in the starting vertex and finite changes in the initial configuration.
Angel, Omer
We prove the existence of recurrent initial configurations for the rotor walk on many graphs, including Z d, and planar graphs with locally finite embeddings. We also prove that recurrence and transience of rotor walks are invariant under changes in the starting vertex and finite changes in the initial configuration.
Omer Angel; Alexander E. Holroyd
Federal Acquisition Circular 2005-60
Circular 2005-60 Circular 2005-60 SUMMARY: This document summarizes the Federal Acquisition Regulation (FAR) rules agreed to by the Civilian Agency Acquisition Council and the Defense Acquisition Regulations Council (Councils) in this Federal Acquisition Circular (FAC) 2005-60. Item Subject FAR Case I Reporting Executive Compensation and First-Tier Subcontract Awards 2008-039 II Payments Under Time-and- Materials and Labor-Hour Contracts 2011-003 III Extension of Sunset Date for Protests of Task and Delivery Orders 2012-007 IV DARPA-New Mexico Tax Agreement 2012-019 V Clarification of Standards for Computer Generation of Forms 2011-022 VI Technical Amendments Item I Reporting Executive Compensation and First-Tier Subcontract Awards (FAR Case
OMB Circular A-123, Appendix B
T H E D I R E C T O R January 15, 2009 CIRCULAR NO. A-123, Appendix B Revised TO THE HEADS OF EXECUTIVE DEPARTMENTS AND ESTABLISHMENTS SUBJECT: Improving the Management of Government Charge Card Programs Appendix B of OMB Circular A-123 prescribes policies and procedures to agencies regarding how to maintain internal controls that reduce the risk of fraud, waste, and error in government charge card programs. This revision responds to recommendations made by the Government Accountability Office (GAO) regarding the Federal purchase card program as well as agency comments and suggestions made by Agency/Organization Program Coordinators. These revisions replace and rescind all previously issued OMB Circular A-123 Appendix B policy dated February 2006 and August 2005. Significant updates to Appendix B are as follows:
Federal Acquisition Circular 2005-36
Federal Acquisition Circular 2005-36 Federal Acquisition Circular 2005-36 Item Subject FAR case I.............. Federal Technical Data Solution (FedTeDS) 2008-038 II............. Fair Labor Standards Act and Service Contract 2007-021 Act Price Adjustment Clauses. III............ New Designated Country-Taiwan 2009-014 IV............. Prohibition on Restricted Business Operations 2008-004 in Sudan and Imports from Burma. V.............. List of Approved Attorneys, Abstractors, and 2006-013 Title Companies. VI............. Cost Accounting Standards (CAS) 2007-002 Administration and Associated Federal Acquisition Regulation Clauses. VII............ Technical Amendments
ASCE Avionic System Configuration Evaluation
ASCE - Avionic System Configuration Evaluation A novel approach to the problems associated with the development of total avionics systems design and evaluation is described. The ASCE framework provides a general, interactive aid for comparing and evaluating ...
Joe Clema; Stephen Zissos
Configuring intelligent mediators using ontologies
This paper presents a new intelligent mediators configuration approach which exploits high expressive description logics to represent metadata, and reasoning tasks in order to build more flexible mediation systems. A user specifies a needs expression ...
Gennaro Bruno; Christine Collet; Genoveva Vargas-Solar
In-Plane Focusing of Terahertz Surface Waves on a Gradient Index Metamaterial Film
We designed and implemented a gradient index metasurface for the in-plane focusing of confined terahertz surface waves. We measured the spatial propagation of the surface waves by two-dimensional mapping of the complex electric field using a terahertz near-field spectroscope. The surface waves were focused to a diameter of 500 \\micro m after a focal length of approx. 2 mm. In the focus, we measured a field amplitude enhancement of a factor of 3.
Volk, Martin F; Neu, Jens; Beigang, Ren�; Rahm, Marco
Technical Standards, OMB Circular A-119 - May 14, 1998 | Department...
OMB Circular A-119 - May 14, 1998 Technical Standards, OMB Circular A-119 - May 14, 1998 May 14, 1998 Federal Participation in the Development and Use of Voluntary Consensus...
Policy Flash 2013-63 Federal Acquisition Circular (FAC) 2005...
3 Federal Acquisition Circular (FAC) 2005-67 Policy Flash 2013-63 Federal Acquisition Circular (FAC) 2005-67 Questions concerning this policy flash should be directed to Barbara...
the login nodes with ssh email@example.com. The login nodes have 32 GB of RAM, have 2.3GHz processors and have 8 cores each. "gpint" Analysis Nodes Genepool also...
difference between a loop in a structural template and its aligned (loop) region in the query sequence. e.g., MaxLoopSize 20 MaxSkipSeqSize (default 30): the maximum allowed...
Circular zig-zag scan video format
A circular, ziz-zag scan for use with vidicon tubes. A sine wave is generated, rectified and its fourth root extracted. The fourth root, and its inverse, are used to generate horizontal ramp and sync signals. The fourth root is also used to generate a vertical sync signal, and the vertical sync signal, along with the horizontal sync signal, are used to generate the vertical ramp signal. Cathode blanking and preamplifier clamp signals are also obtained from the vertical sync signal.
Peterson, C. Glen (Los Alamos, NM); Simmons, Charles M. (Los Alamos, NM)
CRAD, Configuration Management - Oak Ridge National Laboratory...
Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR CRAD, Configuration Management - Oak Ridge National Laboratory High Flux Isotope...
Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor February...
Quasipassive positioning platform for nanoscale management of in-plane motion
As leading edge technology pursues a common trend of working on smaller and smaller scales, there is increasing demand on the motion management at the nanometer range. In this letter, we report a two-axis quasipassive positioning device capable of four degrees of freedom in-plane motion. The concept comprises of a platform suspended by tensile stressed flexure elements on either side. By selectively trimming the stress elements, the equilibrium position can be biased to one side or another, enabling nanoscale movement between the suspended platform and the base. Focused ion beam experiment demonstrates that such platform enables positioning accuracy on the order of tens of nanometers.
Li Biao; Zhu Yu; Sharon, Andre [Fraunhofer Center for Manufacturing Innovation, 15 St. Mary's Street, Brookline, Massachusetts 02446 (United States); College of Nanoscale Science and Engineering, University at Albany-SUNY, 255 Fuller Road, Albany, New York 12203 (United States); Fraunhofer Center for Manufacturing Innovation, 15 St. Mary's Street, Brookline, Massachusetts 02446 (United States)
Energy of gravitational radiation in plane-symmetric space-times
Gravitational radiation in plane-symmetric space-times can be encoded in a complex potential, satisfying a non-linear wave equation. An effective energy tensor for the radiation is given, taking a scalar-field form in terms of the potential, entering the field equations in the same way as the matter energy tensor. It reduces to the Isaacson energy tensor in the linearized, high-frequency approximation. An energy conservation equation is derived for a quasi-local energy, essentially the Hawking energy. A transverse pressure exerted by interacting low-frequency gravitational radiation is predicted.
Sean A. Hayward
Radiative transfer in plane-parallel media and Cauchy integral equations II. The H-function
In the central part of this paper, we revisit the classical study of the H-function defined as the unique solution, regular in the right complex half-plane, of a Cauchy integral equation. We take advantage of our work on the N-function published in the first article of this series. The H-function is then used to solve a class of Cauchy integral equations occurring in transfer problems posed in plane-parallel media. We obtain a concise expression of the unique solution analytic in the right complex half-plane, then modified with the help of the residue theorem for numerical calculations.
B. Rutily; J. Bergeat; L. Chevallier
Revised OMB Circular A-76 (Revised November 14, 2002)
OMB Circular A-76 Revision Comments OMB Circular A-76 Revision Comments DRAFT OMB CIRCULAR A-76 (NOVEMBER 14, 2002) REVIEW COMMENTS AND RECOMMENDATIONS GENERAL COMMENTS: The Department of Energy (DOE) supports the overarching goal of OMB Circular A-76 that agencies should obtain "the best deal to the Taxpayer." We also support revisions to the Circular that "Keep the Process Moving" with the end result being: Faster/Cheaper Competitions; Improved Performance and Measures; Enhanced/Expanded Competition; Fairness; Realizing Significant Savings; and the Redirection of Resources to Mission Critical Requirements. Upon review of the draft Circular, the Department believes the proposed changes to Circular reflect a general improvement over the current version. The Department does, however, have
Determining the Mechanisms of Cationic Contamination Affecting PEMFCs Using a Strip Cell Configuration
Cationic contamination of polymer electrolyte fuel cells has been shown to cause serious performance degradation but the exact mechanisms of this degradation are not fully understood. A strip cell configuration was devised to study the mechanisms of performance degradation due to cationic contamination by changing the time and length scales of traditional fuel cells while providing a suitable reference electrode. This 'strip cell' configuration utilizes traditional Nafion{reg_sign} membranes in an in-plane configuration with electrodes painted on each end. Using this cell it was determined that cationic contaminants collect near the cathode of the fuel cell under load and that this profile leads to increased losses primarily in the cathode region. These results can be directly related to performance losses in a typical PEMFC contaminated by foreign cations.
Kienitz, B. L.; Zawodzinski, T. A.; Pivovar, B. S.; Garzon, F. H.
The United States Government Configuration Baseline ...
... ITL). The United States Government Configuration Baseline (USGCB) - Windows Vista Firewall Content. Warning Notice. ...
... Laboratory (ITL). The United States Government Configuration Baseline (USGCB) - Windows 7 Content. Warning Notice. Do ...
Network sensitivity to geographical configuration
Gravitational wave astronomy will require the coordinated analysis of data from the global network of gravitational wave observatories. Questions of how to optimally configure the global network arise in this context. We have elsewhere proposed a formalism which is employed here to compare different configurations of the network, using both the coincident network analysis method and the coherent network analysis method. We have constructed a network model to compute a figure-of-merit based on the detection rate for a population of standard-candle binary inspirals. We find that this measure of network quality is very sensitive to the geographic location of component detectors under a coincident network analysis, but comparatively insensitive under a coherent network analysis.
Antony C Searle; Susan M Scott; David E McClelland
Acceleration of polarized protons in circular accelerators
The theory of depolarization in circular accelerators is presented. The spin equation is first expressed in terms of the particle orbit and then converted to the equivalent spinor equation. The spinor equation is then solved for three different situations: (1) a beam on a flat top near a resonance, (2) uniform acceleration through an isolated resonance, and (3) a model of a fast resonance jump. Finally, the depolarization coefficient, epsilon, is calculated in terms of properties of the particle orbit and the results are applied to a calculation of depolarization in the AGS.
Courant, E.D.; Ruth, R.D.
A Family of Circular Bargmann Transforms
When considering a charged particle evolving in the Poincar\\'e disk under influence of a uniform magnetic field with a strength proportional to +1, we construct for all hyperbolic Landau level \\epsilon^\\gamma_$m$ m = 4m(-m), m 2 Z+ \\[0, /2] a family of coherent states transforms labeled by (,m) and mapping isometrically square integrable functions on the unit circle with respect to the measure sin^\\gamma-2m (\\theta/2) d\\theta onto spaces of bound states of the particle. These transforms are called circular Bargmann transforms.
Zouhair Mouayn
This invention is comprised of a circular, zig-zag scan for use with vidicon tubes. A sine wave is generated, rectified and its fourth root extracted. The fourth root, and its inverse, are used to generate horizontal ramp and sync signals. The fourth root is also used to generate a vertical sync signal, and the vertical sync signal, along with the horizontal sync signal, are used to generate the vertical ramp signal. Cathode blanking and preamplifier clamp signals are also obtained from the vertical sync signal.
Peterson, C.G.; Simmons, C.M.
A circular, ziz-zag scan for use with vidicon tubes is disclosed. A sine wave is generated, rectified and its fourth root extracted. The fourth root, and its inverse, are used to generate horizontal ramp and sync signals. The fourth root is also used to generate a vertical sync signal, and the vertical sync signal, along with the horizontal sync signal, are used to generate the vertical ramp signal. Cathode blanking and preamplifier clamp signals are also obtained from the vertical sync signal. 10 figs.
Circular dichroism: A general theory based on quantum electrodynamics
A theory of circular dichroism is developed through a direct calculation of the absorption rates for circularly polarized light on molecules. From this a differential rate as between left and right circularly polarized light is calculated. This is immediately related to the experimental data on circular dichroism. When the calculations are restricted to the dipole approximation we reproduce the rotatory strength in the form of a differential Einstein B coefficient. Higher moments are considered in detail and their effects analyzed for both the locked?in situation and the case of randomly oriented molecular absorbers. A general expression is obtained for the differential absorption rate.
E. A. Power; T. Thirunamachandran
Tank waste remediation system configuration management plan
The configuration management program for the Tank Waste Remediation System (TWRS) Project Mission supports management of the project baseline by providing the mechanisms to identify, document, and control the functional and physical characteristics of the products. This document is one of the tools used to develop and control the mission and work. It is an integrated approach for control of technical, cost, schedule, and administrative information necessary to manage the configurations for the TWRS Project Mission. Configuration management focuses on five principal activities: configuration management system management, configuration identification, configuration status accounting, change control, and configuration management assessments. TWRS Project personnel must execute work in a controlled fashion. Work must be performed by verbatim use of authorized and released technical information and documentation. Application of configuration management will be consistently applied across all TWRS Project activities and assessed accordingly. The Project Hanford Management Contract (PHMC) configuration management requirements are prescribed in HNF-MP-013, Configuration Management Plan (FDH 1997a). This TWRS Configuration Management Plan (CMP) implements those requirements and supersedes the Tank Waste Remediation System Configuration Management Program Plan described in Vann, 1996. HNF-SD-WM-CM-014, Tank Waste Remediation System Configuration Management Implementation Plan (Vann, 1997) will be revised to implement the requirements of this plan. This plan provides the responsibilities, actions and tools necessary to implement the requirements as defined in the above referenced documents.
Vann, J.M.
Federal Acquisition Regulation; Federal Acquisition Circular
2005-37; Introduction Federal Acquisition Circular (FAC) 2005-37 List of Rules in FAC 2005-37 Item Subject I. Registry of Disaster Response Contractors II. Limiting Length of Noncompetitive Contracts in "Unusual and Compelling Urgency" Circumstances III. GAO Access to Contractor Employees IV. Use of Commercial Services Item Authority V. Limitations on Pass-Through Charges VI. Award Fee Language Revision VII. National Response Framework VIII. Technical Amendments SUPPLEMENTARY INFORMATION: Summaries for each FAR rule follow. Item I-Registry of Disaster Response Contractors (FAR Case 2008-035) This interim rule amends the FAR at parts 2, 4, 7, 10, 13, 18, 26, and 52 to implement the Registry of Disaster Response Contractors provision, section 697 of the Department of
Federal Acquisition Circular WAC) 2001-24
FLASH 2004-20 July 12, 2004 Federal Acquisition Circular WAC) 2001-24 1. Incentives for Use of Performance-Based Contracting for Services (Interim) (FAR Case 2004-004) Effective Date: June 18, 2004 What is the purpose of this FAR Case? This interim rule amends the FAR providing authority to treat perfonnance-based contract or task orders for services as commercial items if specific conditions are met. It also requires agencies to report on perfonnance-based contracts or task orders awarded using this authority. This rulemaking affects FAR Parts 2, Definitions, 12, Acquisition of Commercial Items, 37, Service Contracting, and 52, Solicitation Provisions and Contract Clauses. ~ Provides that performance-based contracts and task orders for services with an estimated value not to exceed $25,000,000, be treated as
0 0 Federal Acquisition Circular (FAC) 2005-40 Federal Register /Vol. 75, No. 55 /Tuesday, March 23, 2010 /page 14059 A summary for the FAR rule follows. Federal Awardee Performance and Integrity Information System (FAPIIS) (FAR case 2008-027) Effective Date: April 22, 2010. This final rule amends the FAR to implement section 872 of the Duncan Hunter National Defense Authorization Act for Fiscal Year 2009. Section 872 requires the establishment of a data system, Federal Awardee Performance and Integrity Information System (FAPIIS), containing specific information on the integrity and performance of covered Federal agency contractors and grantees. FAPIIS is available for use in award decisions at www.ppirs.gov. Government input to FAPIIS is accomplished at www.cpars.csd.disa.mil.
Security Configuration Checklists for IT Commercial Products
Security Configuration Checklists for Commercial IT Products. ... The use of checklists improves the consistency and predictability of system security. ...
Generating Heuristics to Control Configuration Processes
Configuration is the process of composing a system from a set of components such that the system fulfills a set of desired demands. The configuration process relies on a particular component model, which is a useful abstraction of the domain and the ... Keywords: configuration, design, heuristic search, knowledge-based systems, preprocessing
Benno Stein
UConnect Wireless Connection Windows 7 Configuration
UConnect Wireless Connection Windows 7 Configuration page 1 revised February, 2012 Configuring a UConnect Wireless Connection on Windows 7 1. Open the Network and Sharing Center a. Click the Windows icon screen, select Network and Sharing Center. #12;UConnect Wireless Connection Windows 7 Configuration page
Provancher, William
Flow-induced vibration of circular cylindrical structures
This report summarizes the flow-induced vibration of circular cylinders in quiescent fluid, axial flow, and crossflow, and applications of the analytical methods and experimental data in design evaluation of various system components consisting of circular cylinders. 219 figs., 30 tabs. (JDB)
Chen, S.S.
We present a detailed analysis of the orbit of Charon where we show its orbit to be circular. This analysis explores the effects of surface albedo variations on the astrometry and the resulting errors in the orbital elements. We present two new epochs of data from the Hubble Space Telescope taken in 2008 and 2010 and combine that with a re-analysis of previously published data from 1992 and 2002. Our adopted two-body Keplerian orbital elements for Charon are P = 6.3872273 {+-} 0.0000003 days, a = 19573 {+-} 2 km, e = 0., i = 96.218 {+-} 0.008 deg, L = 4.50177 {+-} 0.00018 rad, and {Omega} = 3.89249 {+-} 0.00012 rad for an epoch of JDT = 2452600.5 in the J2000 reference frame. The 1{sigma} upper limit to the eccentricity is 7.5 Multiplication-Sign 10{sup -5}. The predicted uncertainty in the position of Charon relative to Pluto at the time of the New Horizons encounter based on this orbit is 8 km.
Buie, Marc W. [Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302 (United States); Tholen, David J. [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States); Grundy, William M., E-mail: email@example.com, E-mail: email@example.com, E-mail: firstname.lastname@example.com [Lowell Observatory, 1400 W. Mars Hill Road, Flagstaff, AZ 86001 (United States)
A spintronic source of circularly polarized single photons
We present a spintronic single photon source which emits circularly polarized light, where the helicity is determined by an applied magnetic field. Photons are emitted from an InGaAs quantum dot inside an electrically operated spin light-emitting diode, which comprises the diluted magnetic semiconductor ZnMnSe. The circular polarization degree of the emitted light is high, reaching 83% at an applied magnetic field of 2T and 96% at 6 T. Autocorrelation traces recorded in pulsed operation mode prove the emitted light to be antibunched. The two circular polarization states could be used for representing quantum states |0> and |1> in quantum cryptography implementations.
Asshoff, Pablo; Kalt, Heinz; Hetterich, Michael
Pablo Asshoff; Andreas Merz; Heinz Kalt; Michael Hetterich
Definition: Electrical Profiling Configurations | Open Energy Information
Open Energy Info (EERE)
Profiling Configurations Profiling Configurations Jump to: navigation, search Dictionary.png Electrical Profiling Configurations Electrical profiling is a DC resistivity survey which aims to trace lateral variations in the apparent resistivity structure of the subsurface. Traditionally, electrical profiling provides qualitative information of relative apparent resistivity values in order to detect anomalous geological features.[1] Also Known As Electrical mapping References ↑ http://www.amazon.com/Principles-Electric-Borehole-Geophysics-Geochemistry/dp/0444529942 Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Electrical_Profiling_Configurations&oldid=596184" Category: Definitions
Configuring Workstations for use with the PARS II System | Department...
Configuring Workstations for use with the PARS II System Configuring Workstations for use with the PARS II System ConfiguringWorkstationsforusewiththePARSIISystem0.pdf...
Configuring Workstations for use with the PARS II System Configuring Workstations for use with the PARS II System ConfiguringWorkstationsforusewiththePARSIISystem2013071...
DOCS System Configuration Management Plan | Department of Energy
DOCS System Configuration Management Plan DOCS System Configuration Management Plan The DOCS Systems Configuration Management Plan (SCMP), from an actual DOE systems engineering...
IAEA Information Circular 225 Revision 5: Fact Sheet | National Nuclear
National Nuclear Security Administration (NNSA)
IAEA Information Circular 225 Revision 5: Fact Sheet | National Nuclear IAEA Information Circular 225 Revision 5: Fact Sheet | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > Media Room > Fact Sheets > IAEA Information Circular 225 Revision 5: Fact Sheet Fact Sheet IAEA Information Circular 225 Revision 5: Fact Sheet Mar 23, 2012 The Department of Energy's National Nuclear Security Administration
Circular dichroism and fluorescence polarization anisotropy are important tools for characterizing biomolecular systems. Both are used extensively in kinetic experiments involving stopped- or continuous flow systems as well as titrations and steady-state spectroscopy. This paper presents the theory for determining circular dichroism and fluorescence polarization anisotropy simultaneously, thus insuring the two parameters are recorded under exactly the same conditions and at exactly the same time in kinetic experiments. The approach to measuring circular dichroism is that used in almost all conventional dichrographs. Two arrangements for measuring fluorescence polarization anisotropy are described. One uses a single fluorescence detector and signal processing with a lock-in amplifier that is similar to the measurement of circular dichroism. The second approach uses classic ''T'' format detection optics, and thus can be used with conventional photon-counting detection electronics. Simple extensions permit the simultaneous measurement of the absorption and excitation intensity corrected fluorescence intensity.
Every 2-choosable graph is circular consecutive 2-choosable
, 2008 Abstract Suppose G is a graph, r is a positive real number and S(r) is a circle of perimeter r. For a positive real number t r, a (t, r)- circular consecutive colour-list assignment L is a mapping that assigns to each vertex v of G an interval L(v) of S(r) of length t. A circular L-colouring of G
Zhu, Xuding
Actes JFPC 2006 CSP dynamiques en configuration
Actes JFPC 2006 CSP dynamiques en configuration Article Jeune Chercheur JFPC'06 Thomas van'Albi-Carmaux, Route de Teillet, 81013 Albi Cedex 09 {vanouden, gaborit, aldanond, email@example.com Résumé Les CSP, la configuration fait ressortir des besoins qui peuvent difficilement être traités par des CSP clas
Paris-Sud XI, Université de
Sensor network configuration under physical attacks
Sensor networks will typically operate in hostile environments, where they are susceptible to physical attacks resulting in physical node destructions. In this paper, we study impacts of physical attacks on network configuration w.r.t. lifetime. While ... Keywords: deployment, network configuration, network lifetime, physical attacks, physical node destruction, sensor networks
Xun Wang; Wenjun Gu; Kurt Schosek; Sriram Chellappan; Dong Xuan
Automated modeling of modular robotic configurations
This research presents an automated method to build kinematic and dynamic models for assembling modular components of modular robotic systems. By comparison with other approaches, the proposed method is applicable to any robotic configuration with serial, ... Keywords: Automatic modeling, Computer-aided design, Configuration design, Finite element method, Modular architecture, Modular robotic system, Reconfigurable robot
Z. M. Bi; W. A. Gruver; W. J. Zhang; S. Y. T. Lang
Configurable multi-perspective business process models
A configurable process model provides a consolidated view of a family of business processes. It promotes the reuse of proven practices by providing analysts with a generic modeling artifact from which to derive individual process models. Unfortunately, ... Keywords: Business process, Configurable process model, EPC
Marcello La Rosa; Marlon Dumas; Arthur H. M. ter Hofstede; Jan Mendling
Improving sensornet performance by separating system configuration from system logic
Many sensor network protocols are self-configuring, but independent self-configuration at different layers often results in suboptimal performance. We present Chi, a full-system configuration architecture that separates system logic from system configuration. ...
Niclas Finne; Joakim Eriksson; Nicolas Tsiftes; Adam Dunkels; Thiemo Voigt
Configuration Management Plan for K Basins
This plan describes a configuration management program for K Basins that establishes the systems, processes, and responsibilities necessary for implementation. The K Basins configuration management plan provides the methodology to establish, upgrade, reconstitute, and maintain the technical consistency among the requirements, physical configuration, and documentation. The technical consistency afforded by this plan ensures accurate technical information necessary to achieve the mission objectives that provide for the safe, economic, and environmentally sound management of K Basins and the stored material. The configuration management program architecture presented in this plan is based on the functional model established in the DOE Standard, DOE-STD-1073-93, {open_quotes}Guide for Operational Configuration Management Program{close_quotes}.
Weir, W.R.; Laney, T.
In-Plane Electronic Anisotropy of Underdoped ___122___ Fe-Arsenide Superconductors Revealed by Measurements of Detwinned Single Crystals
The parent phases of the Fe-arsenide superconductors harbor an antiferromagnetic ground state. Significantly, the Neel transition is either preceded or accompanied by a structural transition that breaks the four fold symmetry of the high-temperature lattice. Borrowing language from the field of soft condensed matter physics, this broken discrete rotational symmetry is widely referred to as an Ising nematic phase transition. Understanding the origin of this effect is a key component of a complete theoretical description of the occurrence of superconductivity in this family of compounds, motivating both theoretical and experimental investigation of the nematic transition and the associated in-plane anisotropy. Here we review recent experimental progress in determining the intrinsic in-plane electronic anisotropy as revealed by resistivity, reflectivity and ARPES measurements of detwinned single crystals of underdoped Fe arsenide superconductors in the '122' family of compounds.
Fisher, Ian Randal
Vertical Electrical Sounding Configurations | Open Energy Information
Vertical Electrical Sounding Configurations Vertical Electrical Sounding Configurations Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Vertical Electrical Sounding Configurations Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Direct-Current Resistivity Survey Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature
Electrical Profiling Configurations | Open Energy Information
Electrical Profiling Configurations Electrical Profiling Configurations Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electrical Profiling Configurations Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Direct-Current Resistivity Survey Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature
Software Configuration Management (SCM) A Practical Guide | Department of
Software Configuration Management (SCM) A Practical Guide Software Configuration Management (SCM) A Practical Guide Software Configuration Management (SCM) A Practical Guide This document provides a practical guide for integrating software configuration management disciplines into the management of software engineering projects. Software configuration management is the process of identifying and defining the software configuration items in a system, controlling the release and change of these items throughout the system lifecycle, recording and reporting the status of configuration items and change requests, and verifying the completeness and correctness of configuration items Software Configuration Management (SCM) A Practical Guide More Documents & Publications NMMSS Software Quality Assurance Plan SOFTWARE QUALITY & SYSTEMS ENGINEERING PROGRAM: Software Configuration
Property:Mooring Configuration | Open Energy Information
Mooring Configuration Mooring Configuration Jump to: navigation, search Property Name Mooring Configuration Property Type Text Pages using the property "Mooring Configuration" Showing 25 pages using this property. (previous 25) (next 25) M MHK Technologies/Aegir Dynamo + Gravity base with tension leg platform MHK Technologies/AirWEC + Single point slack moored MHK Technologies/Aquantis + Proprietary MHK Technologies/Atlantis AN 150 + mono pylon MHK Technologies/Atlantis AR 1000 + Site specific design mono pylon or gravity base structure The AR 1000 deployed at EMEC makes use of a GBS foundation MHK Technologies/Atlantis AS 400 + N A MHK Technologies/C Plane + Tethered MHK Technologies/CETO Wave Energy Technology + Anchored MHK Technologies/Centipod + Proprietary MHK Technologies/Current Electric Generator + The anchors for the Current Electric Generator will be made from concrete and will be a gravity base
Definition: Vertical Electrical Sounding Configurations | Open Energy
Sounding Configurations Sounding Configurations Jump to: navigation, search Dictionary.png Vertical Electrical Sounding Configurations A vertical electrical sounding (VES) is a DC resistivity survey which provides information regarding the change in apparent resistivity with depth. A quantitative interpretation of the results from VES measurements enable determination of the parameters for the geoelectric section.[1] Also Known As VES; Schlumberger Sounding References ↑ http://www.nga.com/Flyers_PDF/NGA_DC_Resistivity.pdf http://www.amazon.com/Principles-Electric-Borehole-Geophysics-Geochemistry/dp/0444529942 Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Vertical_Electrical_Sounding_Configurations&oldid=596183
A decision maker for transport protocol configuration
This paper proposes an approach, called Protocol Configuration Decision Maker, for TCP to dynamically adapt to a network environment. The proposed mechanism monitors the network condition with parameters like loss rate. Then it consults a knowledge ...
Jae-Hyun Hwang; Jin-Hee Choi; Chuck Yoo
A delta configured auxiliary resonant snubber inverter
A delta ({Delta}) configured auxiliary resonant snubber inverter is developed to overcome the voltage floating problem in a wye (Y) configured resonant snubber inverter. The proposed inverter is to connect auxiliary resonant branches between phase outputs to avoid a floating point voltage which may cause over-voltage failure of the auxiliary switches. Each auxiliary branch consists of a resonant inductor and a reverse blocking auxiliary switch. Instead of using an anti-paralleled diode to allow resonant current to flow in the reverse direction, as in the Y-configured version, the resonant branch in the {Delta}-configured version must block the negative voltage, typically done by a series diode. This paper shows single-phase and three-phase versions of {Delta}-configured resonant snubber inverters and describes in detail the operating principle of a single-phase version. The extended three-phase version is proposed with non-adjacent state space vector modulation. For hardware implementation, a single-phase 1-kW unit and a three-phase 100-kW unit were built to prove the concept. Experimental results show the superiority of the proposed topology.
Lai, J.S.; Young, R.W.; Ott, G.W. Jr.; McKeever, J.W. [Oak Ridge National Lab., TN (United States). Engineering Technology Div.; Peng, F.Z. [Univ. of Tennessee, Knoxville, TN (United States)]|[Oak Ridge National Lab., TN (United States)
Window Function for Non-Circular Beam CMB Anisotropy Experiment
We develop computationally rapid methods to compute the window function for a cosmic microwave background anisotropy experiment with a non-circular beam which scans over large angles on the sky. To concretely illustrate these methods we compute the window function for the Python V experiment which scans over large angles on the sky with an elliptical Gaussian beam.
Tarun Souradeep; Bharat Ratra
On the longest increasing subsequence of a circular list
The longest increasing circular subsequence (LICS) of a list is considered. A Monte Carlo algorithm to compute it is given which has worst case execution time O(n^3^/^2logn) and storage requirement O(n). It is proved that the expected length @m(n) of ... Keywords: Combinatorial problems, Randomized algorithms
M. H. Albert; M. D. Atkinson; Doron Nussbaum; J�rg-R�diger Sack; Nicola Santoro
Using circular programs to deforest in accumulating parameters
Functional languages allow a modular programming style by function composition, which however can lead to inefficient runtime behavior due to production and consumption of intermediate results.We present a new mechanizable transformation technique for ... Keywords: accumulating parameters, circular programs, deforestation, intermediate data structures, lazy composition, lazy evaluation, multiple traversals, program transformation, tupling
Janis Voigtl�nder
PARS II Configuration Update - Trusted Publisher
Configuration Update - Trusted Publisher Configuration Update - Trusted Publisher As of July 15, 2013, all reports within SSS Reports will require a new Trusted Publisher to be accepted in order for reports to present correctly and as intended. The new Trusted Publisher certificate has been issued to the US Department of Energy by Entrust Code Signing Certification Authority - L1D and is valid until 4/22/2016. Depending upon the security settings within your domain for your workstation, administrative rights may be required to accept the new Trusted Publisher. If required, please contact your local IT Helpdesk for assistance. The original Trusted Publisher certificate, Dekker Ltd., may remain within your configuration settings. Acceptance of the new Trusted Publisher in no way affects any current reporting requirements.
A configuration system for the ATLAS trigger
will be exposed to proton-proton collisions from beams crossing at 40 MHz that have to be reduced to the few 100 Hz allowed by the storage systems. A three-level trigger system has been designed to achieve this goal. We describe the configuration system under construction for the ATLAS trigger chain. It provides the trigger system with all the parameters required for decision taking and to record its history. The same system configures the event reconstruction, Monte Carlo simulation and data analysis, and provides tools for accessing and manipulating the configuration data in all contexts. THE ATLAS TRIGGER The LHC proton bunches will cross at a frequency of approximately 40 MHz. The rate of events that can be committed to permanent storage in normal data taking is only
unknown authors
Tank Waste Remediation Systems (TWRS) Configuration Management Implementation Plan
The Tank Waste Configuration Management (TWRS) Configuration Management Implementation Plan descibes the execution of the configuration management (CM) that the contractor uses to manage and integrate its programmatic and functional operations to perform work.
Buried waste integrated demonstration configuration management plan
This document defines plans for the configuration management requirements for the Buried Waste Integrated Demonstration (BWID) Program. Since BWID is managed programmatically by the Waste Technology Development Department (WTDD), WTDD Program Directive (PD) 1.5 (Document Preparation, Review, Approval, Publication, Management and Change Control) is to be followed for all internal EG&G Idaho, Inc., BWID programmatic documentation. BWID documentation generated by organizations external to EG&G Idaho is not covered by this revision of the Configuration Management Plan (CMP), but will be addressed in subsequent revisions.
Cannon, P.G.
This document defines plans for the configuration management requirements for the Buried Waste Integrated Demonstration (BWID) Program. Since BWID is managed programmatically by the Waste Technology Development Department (WTDD), WTDD Program Directive (PD) 1.5 (Document Preparation, Review, Approval, Publication, Management and Change Control) is to be followed for all internal EG G Idaho, Inc., BWID programmatic documentation. BWID documentation generated by organizations external to EG G Idaho is not covered by this revision of the Configuration Management Plan (CMP), but will be addressed in subsequent revisions.
A GAP package for computation with coherent configurations
We present a GAP package for computing with Schurian coherent configurations and their representations. Keywords: GAP, GRAPE, association scheme, centralizer ring, coherent configuration, permutation group, sage, semidefinite programming
Dmitrii V. Pasechnik; Keshav Kini
The fundamentals of configuration in face perception and discrimination
THE DISSERTATION The Fundamentals of Configuration in FaceCALIFORNIA, SAN DIEGO The Fundamentals of Configuration inorganization of a face are fundamental to daily human
Pallett, Pamela Mitchell
V-120: EMC Smarts Network Configuration Manager Java RMI Access...
0: EMC Smarts Network Configuration Manager Java RMI Access Control Flaw Lets Remote Users Gain Full Control V-120: EMC Smarts Network Configuration Manager Java RMI Access Control...
A survey of system configuration tools
We believe that informed choices are better choices. When you adopt a system configuration tool, it implies a significant investment in time and/or money. Before making such an investment, you want to pick the right tool for your environment. Therefore, ...
Thomas Delaet; Wouter Joosen; Bart Vanbrabant
Film bonded fuel cell interface configuration
An improved interface configuration for use between adjacent elements of a fuel cell stack. The interface is impervious to gas and liquid and provides resistance to corrosion by the electrolyte of the fuel cell. A multi-layer arrangement for the interface provides bridging electrical contact with a hot-pressed resin filling the void space.
Kaufman, Arthur (West Orange, NJ); Terry, Peter L. (Chatham, NJ)
Configuration structures, event structures and Petri nets
In this paper the correspondence between safe Petri nets and event structures, due to Nielsen, Plotkin and Winskel, is extended to arbitrary nets without self-loops, under the collective token interpretation. To this end we propose a more general form ... Keywords: Concurrency, Configuration structures, Event structures, Petri nets, Propositional logic
R. J. van Glabbeek; G. D. Plotkin
Construction processes configuration using process patterns
Process modeling is used in construction to support various simulation tasks. A major problem is that due to the one-of-a-kind character of construction projects a lot of work is needed each time to manually develop a project overall process schedule. ... Keywords: Ontology, Process configuration, Process modeling, Process pattern, Rules
A. Benevolenskiy; K. Roos; P. Katranuschkov; R. J. Scherer
Policy Flash 2013-75 Federal Acquisition Circular 2005-69 | Department...
Flash 2013-75 Federal Acquisition Circular 2005-69 Policy Flash 2013-75 Federal Acquisition Circular 2005-69 Questions concerning this policy flash should be directed to Barbara...
Circular Economy Assessment for Coal-fired Power Plants Based on Supper-Efficiency DEA Model
Coal-fired power plants are the main pollution source in most areas of China. The implementation of circular economy in coal-fired power plants is necessary for environmental protection and also an effective way of energy saving and emission reduction. ... Keywords: circular economy assessment, circular economy improvement, coal-fired power plant, super-efficiency data envelopment analysis
Shao-lun Zeng; Hong Hu; Wei Wang
Federal Acquisition Circular 2005-52 Item Subject FAR case
Circular 2005-52 Circular 2005-52 Item Subject FAR case I Sustainable Acquisition 2010-001 II Contract Closeout 2008-020 III Prohibition on Contracting with Inverted Domestic Corporations 2008-009 IV Buy American Exemption for Commercial Information Technology - Construction Material 2009-039 V Oversight of Contractor Ethics Programs 2010-017 VI Technical Amendments N/A Item I--Sustainable Acquisition (FAR Case 2010-001) (Interim) This interim rule amends the FAR to implement Executive Order 13514, Federal Leadership in Environmental, Energy, and Economic Performance, and Executive Order 13423, Strengthening Federal Environmental, Energy, and Transportation Management. It requires Federal agencies to leverage agency acquisitions to foster markets for
A range description for the planar circular Radon transform
The transform considered in the paper integrates a function supported in the unit disk on the plane over all circles centered at the boundary of this disk. Such circular Radon transform arises in several contemporary imaging techniques, as well as in other applications. As it is common for transforms of Radon type, its range has infinite co-dimension in standard function spaces. Range descriptions for such transforms are known to be very important for computed tomography, for instance when dealing with incomplete data, error correction, and other issues. A complete range description for the circular Radon transform is obtained. Range conditions include the recently found set of moment type conditions, which happens to be incomplete, as well as the rest of conditions that have less standard form. In order to explain the procedure better, a similar (non-standard) treatment of the range conditions is described first for the usual Radon transform on the plane.
Gaik Ambartsoumian; Peter Kuchment
Geometric transport along circular orbits in stationary axisymmetric spacetimes
Parallel transport along circular orbits in orthogonally transitive stationary axisymmetric spacetimes is described explicitly relative to Lie transport in terms of the electric and magnetic parts of the induced connection. The influence of both the gravitoelectromagnetic fields associated with the zero angular momentum observers and of the Frenet-Serret parameters of these orbits as a function of their angular velocity is seen on the behavior of parallel transport through its representation as a parameter-dependent Lorentz transformation between these two inner-product preserving transports which is generated by the induced connection. This extends the analysis of parallel transport in the equatorial plane of the Kerr spacetime to the entire spacetime outside the black hole horizon, and helps give an intuitive picture of how competing "central attraction forces" and centripetal accelerations contribute with gravitomagnetic effects to explain the behavior of the 4-acceleration of circular orbits in that spacetime.
Donato Bini; Christian Cherubini; Gianluca Cruciani; Robert T. Jantzen
Self-Configuration for Wireless Local Area Networks
This paper concentrates on self-configuration in wireless local area networks (WLANs). As the growth of the stringent demand of heterogeneity and re-configurability in future wireless networks, the initial configuration is getting more and more complex, ... Keywords: Analytic hierarchy process, Grey relational analysis, Neighboring AP discovery, Self-configuration
Zhiyong Feng; Qixun Zhang; Dian Fan; Litao Liang; Ping Zhang
Definition and evaluation of product configurator development strategies
Product configurators represent one of the most successful applications of artificial intelligence principles. Product configurators are a subtype of software-based expert systems with a focus on the creation of product specifications. The use of product ... Keywords: Expert systems, Knowledge acquisition, Knowledge engineering, Product configuration, Product configurator
Anders Haug; Lars Hvam; Niels Henrik Mortensen
The evolution of network configuration: a tale of two campuses
Studying network configuration evolution can improve our understanding of the evolving complexity of networks and can be helpful in making network configuration less error-prone. Unfortunately, the nature of changes that operators make to network configuration ... Keywords: longitudinal analysis, network configuration, network evolution
Hyojoon Kim; Theophilus Benson; Aditya Akella; Nick Feamster
Federal Acquisition Regulation; Federal Acquisition Circular 2005-47; Summary
7; Summary 7; Summary This document summarizes the Federal Acquisition Regulation (FAR) rules agreed to by the Civilian Agency Acquisition Council and the Defense Acquisition Regulations Council (Councils) in this Federal Acquisition Circular (FAC) 2005-47. All were effective December 13, 2010 except Items II, HUB Zone, and VI, Pass Through, which will be effective January 12, 2011. List of Rules in FAC 2005-47 Item Subject FAR case Analyst ------------------------------------------------------------------------------------------------------------ ---- I..................................... Notification of Employee 2010-006 McFadden.
Circular hydraulic jump in generalized-Newtonian fluids
We carry out an analytical study of laminar circular hydraulic jumps, in generalized-Newtonian fluids obeying the two-parametric power-law model of Ostwald-de Waele. Under the boundary-layer approximation we obtained exact expressions determining the flow, an implicit relation for the jump radius is derived. Corresponding results for Newtonian fluids can be retrieved as a limiting case for the flow behavior index n=1, predictions are made for fluids deviating from Newtonian behavior.
Rai, Ashutosh; Poria, Swarup
File:DEQ MFSA Circular 1.pdf | Open Energy Information
DEQ MFSA Circular 1.pdf DEQ MFSA Circular 1.pdf Jump to: navigation, search File File history File usage File:DEQ MFSA Circular 1.pdf Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Go to page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Go! next page → next page → Full resolution (1,275 × 1,650 pixels, file size: 313 KB, MIME type: application/pdf, 33 pages) File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 16:00, 9 October 2012 Thumbnail for version as of 16:00, 9 October 2012 1,275 × 1,650, 33 pages (313 KB) Dklein2012 (Talk | contribs) You cannot overwrite this file. Edit this file using an external application (See the setup
Circular, elliptic and oval billiards in a gravitational field
We consider classical dynamical properties of a particle in a constant gravitational force and making specular reflections with circular, elliptic or oval boundaries. The model and collision map are described and a detailed study of the energy regimes is made. The linear stability of fixed points is studied, yielding exact analytical expressions for parameter values at which a period-doubling bifurcation occurs. The dynamics is apparently ergodic at certain energies in all three models, in contrast to the regularity of the circular and elliptic billiard dynamics in the field-free case. This finding is confirmed using a sensitive test involving Lyapunov weighted dynamics. In the last part of the paper a time dependence is introduced in the billiard boundary, where it is shown that for the circular billiard the average velocity saturates for zero gravitational force but in the presence of gravitational it increases with a very slow growth rate, which may be explained using Arnold diffusion. For the oval billiard, where chaos is present in the static case, the particle has an unlimited velocity growth with an exponent of approximately 1/6.
D. R. da Costa; C. P. Dettmann; E. D. Leonel
Assuming that density waves trigger star formation, and that young stars preserve the velocity components of the molecular gas where they are born, we analyze the effects that non-circular gas orbits have on color gradients across spiral arms. We try two approaches, one involving semianalytical solutions for spiral shocks, and another with magnetohydrodynamic (MHD) numerical simulation data. We find that, if non-circular motions are ignored, the comparison between observed color gradients and stellar population synthesis models would in principle yield pattern speed values that are systematically too high for regions inside corotation, with the difference between the real and the measured pattern speeds increasing with decreasing radius. On the other hand, image processing and pixel averaging result in systematically lower measured spiral pattern speed values, regardless of the kinematics of stellar orbits. The net effect is that roughly the correct pattern speeds are recovered, although the trend of higher measured OMEGA{sub p} at lower radii (as expected when non-circular motions exist but are neglected) should still be observed. We examine the MartInez-GarcIa et al. photometric data and confirm that this is indeed the case. The comparison of the size of the systematic pattern speed offset in the data with the predictions of the semianalytical and MHD models corroborates that spirals are more likely to end at outer Lindblad resonance, as these authors had already found.
Martinez-Garcia, Eric E. [Centro de Investigaciones de Astronomia, Apartado Postal 264, Merida 5101-A (Venezuela, Bolivarian Republic of); Gonzalez-Lopezlira, Rosa A.; Gomez, Gilberto C., E-mail: email@example.com, E-mail: firstname.lastname@example.com, E-mail: email@example.com [Centro de Radioastronomia y Astrofisica, UNAM, Campus Morelia, Michoacan, C.P. 58089 (Mexico)
Methodology for Fire Configuration Risk Management
This report presents a methodology for performing bounding fire risk assessments at nuclear power plants (NPPs) for on-line equipment configurations. The methodology is designed to support risk assessments prior to performing maintenance, as required by 10CFR50.65 Section (a)(4), the Maintenance Rule. Risk assessments are typically performed for internal events using probabilistic risk assessments (PRAs). However, fire probabilistic risk assessments (FPRAs) are often not available or their use for this p...
2-dimensional numerical simulations for the wave-wake-body interactions around circular cylinders in motion near seabed
The 2-dimensional, viscous and incompressible flow past a circular cylinder is investigated by solving the Navier-stokes equation. solved using CFD (Computational Fluid These equations are numerically Dynamics) methods on an overlapping multiblock grid system. In this thesis, several flow configurations, such as stationary and oscillating cylinder, were studied in order to predict and to understand the hydrodynamic forces. The results from the different simulations were compared with available experimental and numerical data, which confirmed the correctness and accuracy of the present method. The numerical computations successfully captured many important flow features for the various types of flow conditions. The present program code proves to be a powerful tool, by enabling the study of numerous interesting and useful research topics related to fluid-structure interactions, thereby, it will contribute to a better design of offshore structures.
Tavassoli, Armin
On deforming a sector of a circular cylindrical tube into an intact tube: existence, uniqueness, and stability
Within the context of finite deformation elasticity theory the problem of deforming an open sector of a thick-walled circular cylindrical tube into a complete circular cylindrical tube is analyzed. The analysis provides a means of estimating the radial and circumferential residual stress present in an intact tube, which is a problem of particular concern in dealing with the mechanical response of arteries. The initial sector is assumed to be unstressed and the stress distribution resulting from the closure of the sector is then calculated in the absence of loads on the cylindrical surfaces. Conditions on the form of the elastic strain-energy function required for existence and uniqueness of the deformed configuration are then examined. Finally, stability of the resulting finite deformation is analyzed using the theory of incremental deformations superimposed on the finite deformation, implemented in terms of the Stroh formulation. The main results are that convexity of the strain energy as a function of a certain deformation variable ensures existence and uniqueness of the residually-stressed intact tube, and that bifurcation can occur in the closing of thick, widely opened sectors, depending on the values of geometrical and physical parameters. The results are illustrated for particular choices of these parameters, based on data available in the biomechanics literature.
Micehl Destrade; Jerry G. Murphy; Ray W. Ogden
Semi-metal-insulator transition on the surface of a topological insulator with in-plane magnetization
A thin film of ferromagnetically ordered material proximate to the surface of a three-dimensional topological insulator explicitly breaks the time-reversal symmetry of the surface states. For an out-of-plane ferromagnetic order parameter on the surface, the parity is also broken, since the Dirac fermions become massive. This leads in turn to the generation of a topological Chern-Simons term by quantum fluctuations. On the other hand, for an in-plane magnetization the surface states remain gapless for the non-interacting Dirac fermions. In this work we study the possibility of spontaneous breaking of parity due to a dynamical gap generation on the surface in the presence of a local, Hubbard-like, interaction of strength $g$ between the Dirac fermions. A gap and a Chern-Simons term are generated for $g$ larger than some critical value, g_c, provided the number of Dirac fermions, $N$, is odd. For an even number of Dirac fermions the masses are generated in pairs having opposite signs, and no Chern-Simons term is generated. We discuss our results in the context of recent experiments in EuS/Bi_2Se_3 heterostructures.
Flavio S. Nogueira; Ilya Eremin
Surveillance Guide - CMS 3.1 Configuration Management Implementation
CONFIGURATION MANAGEMENT IMPLEMENTATION CONFIGURATION MANAGEMENT IMPLEMENTATION 1.0 Objective The objective of this surveillance is to verify implementation of configuration management requirements. These surveillance activities provide a basis for evaluating the effectiveness of the contractor's program for implementation and control of configuration management and for establishing compliance with DOE requirements. References 2.1 DOE 430.1, Life Cycle Project Management 2.2 DOE-STD-1073-93, Guide for Operational Configuration Management 3.0 Requirements Implemented This surveillance is conducted to implement requirements of the Functions, Responsiblities and Authorities Manual (FRAM), Section 2, Configuration Management, FRAM #s 3 and 4. These requirements are
Category:Vertical Electrical Sounding Configurations | Open Energy
source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Vertical Electrical Sounding Configurations Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Vertical Electrical Sounding Configurations page? For detailed information on Vertical Electrical Sounding Configurations as exploration techniques, click here. Category:Vertical Electrical Sounding Configurations Add.png Add a new Vertical Electrical Sounding Configurations Technique Pages in category "Vertical Electrical Sounding Configurations" The following 2 pages are in this category, out of 2 total.
Octupole coil configuration for the Tandem Mirror Experiment Upgrade (TMX-U)
The octupole plug concept offers the attractive possibility of reducing the length of the plug and transition sections in tandem mirror reactors. In the Tandem Mirror Experiment Upgrade (TMX-U), we are designing an octupole plug-transition that will replace our current quadrupole plug-transition. The reduction in length is made possible by the more nearly circular plasma cross section throughout the plug and transition sections. The principal physics of the design is the magnetohydrodynamic (MHD) stabilization of the core plasma in the plug by a hot electron ring in the mantle region surrounding the core. This hot electron mantle is MHD stable because of the good curvature field lines provided by the octupole. The positive radial pressure gradient in the hot electron mantle in turn stabilizes the core's plasma. Each octupole set consists of six coils replacing the transition and plug sets in the existing TMX-U experiment. The central cell coils will remain unchanged. Five of the coils for each of the new sets will be fabricated, while one, the 6-T mirror coil, will be reused from TMX-U. This paper will elaborate on the design configuration of the magnets. In particular, the configuration provides for adequate neutral beam lines-of-sight, and access for 0.615 MW of electron-cyclotron resonant heating (ECRH) on each end.
Wong, R.L.; Calderon, M.O.; Felker, B.; Jackson, M.C.; Pedrotti, L.R.
Helix untwisting and bubble formation in circular DNA
The base pair fluctuations and helix untwisting are examined for a circular molecule. A realistic mesoscopic model including twisting degrees of freedom and bending of the molecular axis is proposed. The computational method, based on path integral techniques, simulates a distribution of topoisomers with various twist numbers and finds the energetically most favorable molecular conformation as a function of temperature. The method can predict helical repeat, openings loci and bubble sizes for specific sequences in a broad temperature range. Some results are presented for a short DNA circle recently identified in mammalian cells.
Zoli, Marco
Transmission characteristics of circular metallic waveguides for terahertz radiation
Transmission characteristics of oversized circular metallic waveguides excited by linearly polarised Gaussian laser beams in the terahertz range (4 - 28 THz) are studied theoretically and experimentally. Calculating the transmission characteristics, we have determined the conditions of applicability of the method of the eigenoscillations in the approximations of a real metal by an ideal metal or dielectric, depending on the transmitted radiation frequency. The existence of the transition region is established in the behaviour of the electrodynamic properties of metallic waveguides in the frequency range of 7.5 - 15 THz.
Volodenko, A V; Gurin, O V; Degtyarev, A V; Maslov, Vyacheslav A; Svich, V A; Senyuta, V S; Topkov, A N [V.N. Karazin Kharkov National University, Kharkov (Ukraine)
Particle creation in (2+1) circular dust collapse
We investigate the quantum particle creation during the circularly symmetric collapse of a 2+1 dust cloud, for the cases when the cosmological constant is either zero or negative. We derive the Ford-Parker formula for the 2+1 case, which can be used to compute the radiated quantum flux in the geometric optics approximation. It is shown that no particles are created when the collapse ends in a naked singularity, unlike in the 3+1 case. When the collapse ends in a BTZ black hole, we recover the expected Hawking radiation. 1
Sashideep Gutti; T. P. Singh
Anatomy of neck configuration in fission decay
The anatomy of neck configuration in the fission decay of Uranium and Thorium isotopes is investigated in a microscopic study using Relativistic mean field theory. The study includes $^{236}U$ and $^{232}Th$ in the valley of stability and exotic neutron rich isotopes $^{250}U$, $^{256}U$, $^{260}U$, $^{240}Th$, $^{250}Th$, $^{256}Th$ likely to play important role in the r-process nucleosynthesis in stellar evolution. Following the static fission path, the neck configurations are generated and their composition in terms of the number of neutrons and protons are obtained showing the progressive rise in the neutron component with the increase of mass number. Strong correlation between the neutron multiplicity in the fission decay and the number of neutrons in the neck is seen. The maximum neutron-proton ratio is about 5 for $^{260}$U and $^{256}$Th suggestive of the break down of liquid-drop picture and inhibition of the fission decay in still heavier isotopes. Neck as precursor of a new mode of fission decay like multi-fragmentation fission may also be inferred from this study.
S. K. Patra; R. K. Choudhury; L. Satpathy
HotSpot Software Configuration Management Plan
This Software Configuration Management Plan (SCMP) describes the software configuration management procedures used to ensure that the HotSpot dispersion model meets the requirements of its user base, which includes: (1) Users of the PC version of HotSpot for consequence assessment, hazard assessment and safety analysis calculations; and (2) Users of the NARAC Web and iClient software tools, which allow users to run HotSpot for consequence assessment modeling These users and sponsors of the HotSpot software and the organizations they represent constitute the intended audience for this document. This plan is intended to meet Critical Recommendations 1 and 3 from the Software Evaluation of HotSpot and DOE Safety Software Toolbox Recommendation for inclusion of HotSpot in the Department of Energy (DOE) Safety Software Toolbox. HotSpot software is maintained for the Department of Energy Office of Emergency Operations by the National Atmospheric Release Advisory Center (NARAC) at Lawrence Livermore National Laboratory (LLNL). An overview of HotSpot and NARAC are provided.
Walker, H; Homann, S G
Fluid Mechanics, Drag Reduction and Advanced Configuration Aeronautics
Paper discusses Advanced Aircraft configurational approaches, across the speed range, which are either enabled, or greatly enhanced, by clever Flow Control. Configurations considered include Channel Wings with circulation control for VTOL [but non-hovering] ...
Bushnell Dennis M.
A case study in configuration management tool deployment
While configuration management systems are generally regarded as useful, their deployment process is not well understood or documented. In this paper, we present a case study in configuration management tool deployment. We describe the motivating factors ...
Narayan Desai; Rick Bradshaw; Scott Matott; Sandra Bittner; Susan Coghlan; R�my Evard; Cory Lueninghoener; Ti Leggett; John-Paul Navarro; Gene Rackow; Craig Stacey; Tisha Stacey
How to Cheat at Configuring VmWare ESX Server
This book will detail the default and custom installation of VMware's ESX server as well as basic and advanced virtual machine configurations. It will then walk the reader through post installation configurations including installation and configuration ... Keywords: NT, Networking, Operating Systems
David Rule
Illuminac: simultaneous naming and configuration for workspace lighting control
We explore natural and calm interfaces for configuring ubiquitous computing environments. A natural interface should enable the user to name a desired configuration and have the system enact that configuration. Users should be able to use familiar names ... Keywords: environment control, natural speech interfaces, non-negative matrix factorization
Ana Ram�rez Chang; John Canny
Semantic Web-Based Management of Routing Configurations
Today, network operators typically reason about network behaviour by observing the effects of a particular configuration in operation. This configuration process typically involves logging configuration changes and rolling back to a previous version ... Keywords: BGP, Conflict detection, Network management, Policy languages, Routing policy, Semantic web
F�lix J. Garc�a Clemente; Jose M. Alcaraz Calero; Jorge Bernal Bernab�; Juan Manuel Mar�n P�rez; Gregorio Mart�nez P�rez; Antonio F. G�mez Skarmeta
A Radically Configurable Six-State Compound
Most organic radicals possess short lifetimes and quickly undergo dimerization or oxidation. Here, we report on the synthesis by radical templation of a class of air- and water-stable organic radicals, trapped within a homo[2]catenane composed of two rigid and fixed cyclobis(paraquat-p-phenylene) rings. The highly energetic octacationic homo[2]catenane, which is capable of accepting up to eight electrons, can be configured reversibly, both chemically and electrochemically, between each one of six experimentally accessible redox states (0, 2+, 4+, 6+, 7+, and 8+) from within the total of nine states evaluated by quantum mechanical methods. All six of the observable redox states have been identified by electrochemical techniques, three (4+, 6+, and 7+) have been characterized by x-ray crystallography, four (4+, 6+, 7+, and 8+) by electron paramagnetic resonance spectroscopy, one (7+) by superconducting quantum interference device magnetometry, and one (8+) by nuclear magnetic resonance spectroscopy.
Barnes, J.C.; Fahrenbach, Albert C.; Cao, Dennis; Dyar, Scott M.; Frasconi, M.; Giesener, M. A.; Ben�tez, D.; Tkatchouk, E.; Li, H.; Stern, Charlotte L.; Sarjeant, Amy A.; Hartlieb, K.J.; Liu, Z.; Carmieli, Raanan; Botros, Y.Y.; Wasielewski, M. R.; Goddard III, W.A.; Stoddart, J. Fraser
Generator configuration for solid oxide fuel cells
Disclosed are improvements in a solid oxide fuel cell generator 1 having a multiplicity of electrically connected solid oxide fuel cells 2, where a fuel gas is passed over one side of said cells and an oxygen-containing gas is passed over the other side of said cells resulting in the generation of heat and electricity. The improvements comprise arranging the cells in the configuration of a circle, a spiral, or folded rows within a cylindrical generator, and modifying the flow rate, oxygen concentration, and/or temperature of the oxygen-containing gases that flow to those cells that are at the periphery of the generator relative to those cells that are at the center of the generator. In these ways, a more uniform temperature is obtained throughout the generator.
Reichner, Philip (Plum Boro, PA)
1-Safe Algorithms for Symmetric Site Configurations
In order to provide database availability in the presence of node and site failures, traditional 1-safe algorithms disallow primary and hot standby replicas to be located at the same site. This means that the failure of a single primary node must be handled like a failure of the entire primary site. Furthermore, this excludes symmetric site configurations, where the primary replicas are located at the site closest to the accessing clients. In this paper, we present three novel 1-safe algorithms that allow the above restrictions to be removed. The relative performance of these and the traditional algorithms are evaluated by means of simulation studies. Our main conclusion is that the restrictions of the traditional algorithms can be removed without significantly increasing the processing overhead, during normal operation. From an evaluation based on performance, availability, and transaction durability, the novel dependency tracking algorithm provides the best overall solution. 1 Intro...
Rune Humborstad; Maitrayi Sabaratnam; Svein-olaf Hvasshovd; Ystein Torbjrnsen
Circular Ones Matrices and the Stable Set Polytope of Quasi-Line ...
Circular Ones Matrices and the Stable Set Polytope of Quasi-Line. Graphs. Friedrich Eisenbrand ?. Gianpaolo Oriolo �. Gautier Stauffer �. Paolo Ventura �.
Configuration Studies and Recommendations for the ILC DampingRings
We describe the results of studies comparing different options for the baseline configuration of the ILC damping rings. The principal configuration decisions apply to the circumference, beam energy, lattice type, and technology options for key components, including the injection/extraction kickers and the damping wigglers. To arrive at our recommended configuration, we performed detailed studies of a range of lattices representing a variety of different configuration options; these lattices are described in Chapter 2. The results of the various studies are reported in chapters covering issues of beam dynamics, technical subsystems, costs, and commissioning, reliability and upgrade ability. Our detailed recommendations for the baseline configuration are given in Chapter 7, where we also outline further research and development that is needed before a machine using our recommended configuration can be built and operated successfully. In the same chapter, we suggest possible alternatives to the baseline configuration.
Wolski, Andrzej; Gao, Jie; Guiducci, Susanna
Process Synthesis and Optimization of Biorefinery Configurations
The objective of this research was to develop novel and applicable methodologies to solve systematically problems along a roadmap of constructing a globally optimum biorefinery design. The roadmap consists of the following problems: (1) synthesis of conceptual biorefinery pathways from given feedstocks and products, (2) screening of the synthesized pathways to identify the most economic pathways, (3) development of a flexible biorefinery configuration, and (4) techno-economic analysis of a detailed biorefinery design. In the synthesis problem, a systems-based "forward-backward" approach was developed. It involves forward synthesis of biomass to possible intermediates and reverse synthesis starting with desired products and identifying necessary species and pathways leading to them. Then, two activities are performed to generate complete biorefinery pathways: matching (if one of the species synthesized in the forward step is also generated by the reverse step) or interception (a task is determined to take a forward-generated species with a reverse-generated species by identifying a known process or by using reaction pathway synthesis to link to two species.) In the screening problem, the Bellman's Principle of Optimality was applied to decompose the optimization problem into sub-problems in which an optimal policy of available technologies was determined for every conversion step. Subsequently, either a linear programming formulation or dynamic programming algorithm was used to determine the optimal pathways. In the configuration design problem, a new class of design problems with flexibility was proposed to build the most profitable plants that operate only when economic efficiency is favored. A new formulation approach with proposed constraints called disjunctive operation mode was also developed to solve the design problems. In the techno-economic analysis for a detailed design of biorefinery, the process producing hydrocarbon fuels from lignocellulose via the carboxylate platform was studied. This analysis employed many state-of-the-art chemical engineering fundamentals and used extensive sources of published data and advanced computing resources to yield reliable conclusions to the analysis. Case studies of alcohol-producing pathways from lignocellulosic biomass were discussed to demonstrate the merits of the proposed approaches in the former three problems. The process was extended to produce hydrocarbon fuels in the last problem.
Pham, Viet
Federal Acquisition Regulations Federal Acquisition Circular 2005-51 Summary
Regulations Regulations Federal Acquisition Circular 2005-51 Summary Federal Register April 1, 2011 76FR 18304 I Women-Owned Small Business (WOSB) Program (Interim Rule). II Clarification of Standard Form 26--Award/Contract. Item I--Women-Owned Small Business (WOSB) Program (FAR Case 2010-015) (Interim) This interim rule amends the FAR to add subpart 19.15, Women-Owned Small Business Program, which will assist Federal agencies in achieving the 5 percent statutory goal for contracting with women-owned small business (WOSB) concerns. Agencies may restrict competition to economically disadvantaged women-owned small business (EDWOSB) concerns for contracts assigned a North American Industry Classification Systems (NAICS) code in an industry in which the Small Business Administration has
Stability of an optical vortex in a circular nematic cell
The stability of an optical vortex in a cell with a circular cross section containing a nematic liquid crystal is studied. A modulation theory based on an averaged Lagrangian formulation is developed to study this stability. It is found that the vortex is stable unless the radius of the cell is very small, nearly the width of the vortex itself. Based on the analysis of a stationary vortex, the stability of a low-amplitude vortex in a large cell under the influence of its orbital angular momentum and the repelling effect of the cell boundary are studied. The predictions of this modulation theory are found to be in excellent agreement with numerical simulations.
Minzoni, Antonmaria A. [Fenomenos Nonlineales y Mecanica (FENOMEC), Departamento de Matematicas y Mecanica, Instituto de Investigacion en Matematicas Aplicadas y Sistemas, Universidad Nacional Autonoma de Mexico, 01000 Mexico D.F. (Mexico); Smyth, Noel F. [School of Mathematics and Maxwell Institute for Mathematical Sciences, University of Edinburgh, Edinburgh EH9 3JZ, Scotland (United Kingdom); Xu Zhiyong [Nonlinear Physics Center, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200 (Australia)
SAPHIRE 8 Software Configuration Management Plan
The INL software developers use version control for both the formally released SAPHIRE versions, as well as for source code. For each formal release of the software, the developers perform an acceptance test: the software must pass a suite of automated tests prior to official release. Each official release of SAPHIRE is assigned a unique version identifier. The release is bundled into a standard installation package for easy and consistent set-up by individual users. Included in the release is a list of bug fixes and new features for the current release, as well as a history of those items for past releases. Each formal release of SAPHIRE will have passed an acceptance test. In addition to assignment of a unique version identifier for an official software release, each source code file is kept in a controlled library. Source code is a collection of all the computer instructions written by developers to create the finished product. The library is kept on a server, where back-ups are regularly made. This document describes the configuration management approach used as part of the SAPHIRE development.
Curtis Smith
Evaluation of mixing in three duct configurations and development of a Generic Tee Plenum System (GTPS) for application to single point aerosol sampling
A Generic Tee Plenum System (GTPS) based on three different duct systems (Configuration-I, II and III) used in nuclear facilities has been developed which creates suitable conditions for single point representative sampling. This single point sampling is an acceptable standard methodology for sampling emissions from stacks and ducts of the nuclear industry (ANSI/HPS N13.1-1999 and US EPA 2000). These air duct systems in nuclear facilities must meet the requirements of ANSI/HPS N13.1-1999 that the exhaust airflow be monitored with continuous sampling in case of an accidental release of airborne radionuclides. Results show that the GTPS system performance is well within the requirements of ANSI/HPS N13.1-1999 - the COVs for velocity, tracer gas concentration and 10 [u]m AD aerosol particle are less than the mixing criteria 20% of ANSI/HPS N13.1-1999. The objective of this work is to provide data on the mixing effectiveness of various duct configurations found in nuclear facilities. These data can be applied in new facilities as well as in upgrades to existing U.S. DOE nuclear facilities. The data should also provide a basis for testing the efficacy of mixing models that may be generated in the future. Experiments were conducted to characterize the degree of mixing at downstream locations as affected by several types of flow disturbances, including a plenum consisting with duct intakes, a rectangular elbow with turning vanes, 90? elbows, tees, commercial static mixing device and GTPS in circular and non-circular ducts. The mixing performance of a plenum duct configuration (Configuration-I) with two-intake sources was studied to develop recommendations for suitable sampling locations less than 4 duct diameters downstream of a plenum. Several mixing element options were considered both upstream and downstream of a security grille. A stack model system with straight circular ducts downstream of rectangular elbow with turning vanes (Configuration-II) were characterized for velocity, tracer gas and particle concentration profiles COVs. The application of a mixing system was designed for achieving maximum conditions in round-elbow and tee element system interfaced to a stack (Configuration-III). Several options were considered when using different types of elbows upstream of the stack. Numerical studies for velocity profile in the GTPS were conducted with a commercial computational fluid dynamics (CFD) software, FLUENT. Good agreement was found between the experimental and numerical results.
Han, Tae Won
Configuration Management Plan for the Tank Farm Contractor
The Configuration Management Plan for the Tank Farm Contractor describes configuration management the contractor uses to manage and integrate its technical baseline with the programmatic and functional operations to perform work. The Configuration Management Plan for the Tank Farm Contractor supports the management of the project baseline by providing the mechanisms to identify, document, and control the technical characteristics of the products, processes, and structures, systems, and components (SSC). This plan is one of the tools used to identify and provide controls for the technical baseline of the Tank Farm Contractor (TFC). The configuration management plan is listed in the management process documents for TFC as depicted in Attachment 1, TFC Document Structure. The configuration management plan is an integrated approach for control of technical, schedule, cost, and administrative processes necessary to manage the mission of the TFC. Configuration management encompasses the five functional elements of: (1) configuration management administration, (2) configuration identification, (3) configuration status accounting, (4) change control, and (5 ) configuration management assessments.
A Moving Target Environment for Computer Configurations Using Genetic Algorithms
Moving Target (MT) environments for computer systems provide security through diversity by changing various system properties that are explicitly defined in the computer configuration. Temporal diversity can be achieved by making periodic configuration changes; however in an infrastructure of multiple similarly purposed computers diversity must also be spatial, ensuring multiple computers do not simultaneously share the same configuration and potential vulnerabilities. Given the number of possible changes and their potential interdependencies discovering computer configurations that are secure, functional, and diverse is challenging. This paper describes how a Genetic Algorithm (GA) can be employed to find temporally and spatially diverse secure computer configurations. In the proposed approach a computer configuration is modeled as a chromosome, where an individual configuration setting is a trait or allele. The GA operates by combining multiple chromosomes (configurations) which are tested for feasibility and ranked based on performance which will be measured as resistance to attack. The result of successive iterations of the GA are secure configurations that are diverse due to the crossover and mutation processes. Simulations results will demonstrate this approach can provide at MT environment for a large infrastructure of similarly purposed computers by discovering temporally and spatially diverse secure configurations.
Crouse, Michael; Fulp, Errin W.
Moving sounds enhance the visually-induced self-motion illusion (circular vection) in virtual reality
While rotating visual and auditory stimuli have long been known to elicit self-motion illusions (�circular vection�), audiovisual interactions have hardly been investigated. Here, two experiments investigated whether visually induced circular ... Keywords: Audiovisual interactions, presence, psychophysics, self-motion simulation, spatial sound, vection, virtual reality
Bernhard E. Riecke; Aleksander V�ljam�e; J�rg Schulte-Pelkum
Building Information Modeling - A Minimum Mathematical Configuration
In the current context, the standardization of building construction is not limited to a specific country or to a specific building code. Trade globalization has emphasized the need for standardization in the process of exchange of design information, whether it is in the form of drawings or documents. Building Information Modeling is the latest transformational technology that supports interactive development of design information for buildings. No single Building Information Modeling software package is used in the Architecture Engineering Construction and Facilities Management industries, which is strength as new ideas develop, but a hindrance as the new ideas flow at a different pace into the various programs. The standards divergence of various software results in a limited ability to exchange data between and within projects, especially one sees the difficulty in moving data from one program to another. The Document eXchange File format represents an early attempt to standardize the exchange of drawing information by Autodesk. However, the data was limited to geometric data required for the production of plotted drawings. Metadata in a Building Information Model provides a method to add information to the basic geometric configuration provided in a Document eXchange File. Building Information Model programs use data structures to define smart objects that encapsulate building data in a searchable and robust format. Due to the complexity of building designs eXtensible Markup Language schemas of three dimensional models are often large files that can contain considerable amounts of superfluous information. The aim of this research is to exclude all the superfluous information from the design information and determine the absolute minimum information required to execute the construction of a project. A plain concrete beam element was used as the case study for this research. The results show that a minimal information schema can be developed for a simple building element. Further research is required on more complex elements.
Bhandare, Ruchika
CRAD, Configuration Management - Los Alamos National Laboratory Weapons
Configuration Management - Los Alamos National Laboratory Configuration Management - Los Alamos National Laboratory Weapons Facility CRAD, Configuration Management - Los Alamos National Laboratory Weapons Facility April 2004 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for an assessment of the Configuration Management program at the Los Alamos National Laboratory, Weapons Facility. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Configuration Management - Los Alamos National Laboratory Weapons Facility More Documents & Publications CRAD, Configuration Management - Los Alamos National Laboratory TA 55 SST
V-036: EMC Smarts Network Configuration Manager Database Authentication
6: EMC Smarts Network Configuration Manager Database 6: EMC Smarts Network Configuration Manager Database Authentication Bypass Vulnerability V-036: EMC Smarts Network Configuration Manager Database Authentication Bypass Vulnerability November 29, 2012 - 3:30am Addthis PROBLEM: EMC Smarts Network Configuration Manager Database Authentication Bypass Vulnerability PLATFORM: EMC Smarts Network Configuration Manager (NCM) all versions prior 9.1 ABSTRACT: Two vulnerabilities were reported in EMC Smarts Network Configuration Manager. REFERENCE LINKS: EMC Identifier: ESA-2012-057 Secunia Advisory SA51408 SecurityTracker Alert ID: 1027812 CVE-2012-4614 CVE-2012-4615 IMPACT ASSESSMENT: Medium DISCUSSION: The systems uses a hard-coded key to encrypt authentication credentials on the target system [CVE-2012-4615]. A local user with knowledge of the key
Plug-In Hybrid Electric Vehicles - PHEV Modeling - Powertrain Configuration
Impact of Powertrain Configuration on Fuel Efficiency To evaluate the fuel efficiency potential of plug-in hybrid electric vehicles, it is necessary to compare the advantages and drawbacks of several powertrain configurations, ranging from power split to parallel and series. PSAT offers the unique ability to simulate and compare hundreds of powertrain configurations. The goal of the effort is to define the most promising configurations depending on the particular usage. Component sizes, fuel efficiency and cost will be used to make appropriate decisions. The configurations currently being considered include, but are not limited to: Pre-transmission parallel HEV Post-transmission parallel HEV Power split HEV (including THS II and GM 2 Mode) Series The figure below shows an example comparison of three powertrain configurations (parallel, series and power split).
Category:Electrical Profiling Configurations | Open Energy Information
source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Electrical Profiling Configurations Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Electrical Profiling Configurations page? For detailed information on Electrical Profiling Configurations as exploration techniques, click here. Category:Electrical Profiling Configurations Add.png Add a new Electrical Profiling Configurations Technique Pages in category "Electrical Profiling Configurations" The following 3 pages are in this category, out of 3 total. D DC Resistivity Survey (Dipole-Dipole Array) DC Resistivity Survey (Mise-Á-La-Masse)
Battery Choices for Different Plug-in HEV Configurations (Presentation)
Presents battery choices for different plug-in hybrid electric vehicle (HEV) configurations to reduce cost and to improve performance and life.
Pesaran, A.
Review of Electrical System Configuration Management and Design...
Independent Review of Electrical System Configuration Management and Design Change Control at the Savannah River Site, Waste Solidification Building Project July 2011 Office of...
V-036: EMC Smarts Network Configuration Manager Database Authenticatio...
and JBOSS. Addthis Related Articles V-120: EMC Smarts Network Configuration Manager Java RMI Access Control Flaw Lets Remote Users Gain Full Control U-247: EMC Cloud Tiering...
An effective customization procedure with configurable standard models
In electronic catalogs, commodities such as computers and electronic equipment are specified as standard models although a variety of possible alternative specifications can exist as a combination of selected options; therefore, customized configurations ... Keywords: Case-based reasoning, Comparison shopping, Configuration, Constraint satisfaction problem, Customization
Hyun Jung Lee; Jae Kyu Lee
HUSEC: A heuristic self configuration model for wireless sensor networks
The Network State Beacons (NSB) exchange rate is the critical parameter in monitoring the dynamic state of any self-configuring ad hoc sensor network. Along with the network state and the overhead control traffic, it determines both the time and nature ... Keywords: Beacon exchange rate, Self-configuration, Wireless ad hoc sensor networks
Mudasser Iqbal; Iqbal Gondal; Laurence S. Dooley
A Recurrent Rotor-Router Configuration in Z^3
Rotor Router models were first introduced by James Propp in 2002. A recurrent Rotor configuration is the one in which every state is visited infinitely often. In this project we investigated whether there is a recurrent Rotor configuration in Z^d (d>2).
A, Tulasi Ram Reddy
Application for testing control configurations of binary distillation columns
The paper addresses the problem of testing various control configurations for binary distillation columns. Analyzing from plantwide control point of view the place of distillation column within the plant, the result will be the best control configuration. ... Keywords: composition control, distillation columns, dynamic simulations, plantwide control
Sanda Mihalache; Marian Popescu
Automated Configuration of Algorithms for Solving Hard Computational Problems
Automated Configuration of Algorithms for Solving Hard Computational Problems by Frank Hutter Dipl-performing algorithms for many hard problems are highly parameterized. Selecting the best heuristics and tuning studies the automation of this important part of algorithm design: the configuration of discrete algorithm
Hutter, Frank
Negotiating Boundaries. Configuration Management in Software DevelopmentTeams
Using case-study material from three small software development teams, this paper analyses the regionalisation of �design spaces�. Its main purpose is to understand problems and practices of cooperative work in such spaces. �Configuration management� ... Keywords: Articulation work, CSCW, Configuration Management (CM), Empirical studies
Hilda Tellio?lu; Ina Wagner
ARM: Surface Radiation Measurement Quality Control testing, including climatologically configurable limits
DOE Data Explorer (OSTI)
Surface Radiation Measurement Quality Control testing, including climatologically configurable limits
Gary Hodges; Tom Stoffel; Mark Kutchenreiter; Bev Kay; Aron Habte; Michael Ritsche; Victor Morris; Mary Anderberg
CRAD, Configuration Management - Los Alamos National Laboratory TA 55 SST
Configuration Management - Los Alamos National Laboratory TA Configuration Management - Los Alamos National Laboratory TA 55 SST Facility CRAD, Configuration Management - Los Alamos National Laboratory TA 55 SST Facility June 2005 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for an assessment of the Configuration Management program at the Los Alamos National Laboratory, TA 55 SST Facility. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Configuration Management - Los Alamos National Laboratory TA 55 SST Facility More Documents & Publications CRAD, Emergency Management - Los Alamos National Laboratory TA 55 SST
CRAD, Configuration Management - Oak Ridge National Laboratory High Flux
Configuration Management - Oak Ridge National Laboratory High Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Configuration Management Program in preparation for restart of the Oak Ridge National Laboratory, High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor More Documents & Publications
On fitting planetary systems in counter-revolving configurations
In Gayon & Bois (2008) and Gayon etal (2009), (i) we studied the theoretical feasibility and efficiency of retrograde mean motion resonances (i.e. two planets are both in orbital resonance and in counter-revolving configuration), (ii) we showed that retrograde resonances can generate interesting mechanisms of stability, and (iii) we obtained a dynamical fit involving a counter-revolving configuration that is consistent with the observations of the HD73526 planetary system. In the present paper, we present and analyze data reductions assuming counter-revolving configurations for eight compact multi-planetary systems detected through the radial velocity method. In each case, we select the best fit leading to a dynamically stable solution. The resulting data reductions obtained in rms and chi values for counter-revolving configurations are of the same order, and sometimes slightly better, than for prograde configurations. In the end, these fits tend to show that, over the eight studied multi-planetary system...
Gayon-Markt, Julie
Numerical modeling of interaction of a current with a circular cylinder near a rigid bed
The numerical modeling of 2D turbulent flow around a smooth horizontal circular cylinder near a rigid bed with gap ratio G/D=0.3 at Reynolds number Re"D=9500 is investigated. Ansys^(R) 10.0-FLOTRAN program package is used to solve the governing equations ... Keywords: Circular cylinder, Numerical model, Particle image velocimetry, Steady flow, Strouhal number, Velocity field
M. Salih Kirkgoz; A. Alper Oner; M. Sami Akoz
EIA - Natural Gas Pipeline Network - Network Configuration & System Design
U.S. Energy Information Administration (EIA) Indexed Site
Network Configuration & System Design Network Configuration & System Design About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Network Configuration and System Design Overview | Transmission/Storage | Design Criteria | Importance of Storage| Overall Pipeline System Configuration Overview A principal requirement of the natural gas transmission system is that it be capable of meeting the peak demand of its shippers who have contracts for firm service. To meet this requirement, the facilities developed by the natural gas transmission industry are a combination of transmission pipelines to bring the gas to the market areas and of underground natural gas storage sites and liquefied natural gas (LNG) peaking facilities located in the market areas.
Exhibit A: Modeling in Support of Two Unit Operating Configurations |
Modeling in Support of Two Unit Operating Configurations Modeling in Support of Two Unit Operating Configurations Exhibit A: Modeling in Support of Two Unit Operating Configurations Docket No. EO-05-01: Tables showing modeling of emissions from units of the Mirant Potomac Power Plant. Exhibit A: Modeling in Support of Two Unit Operating Configurations More Documents & Publications Comments on Emergency Order to Resume Limited Operation at the Potomac River Generating Station, Alexandria, VA from the Chesapeake Climate Action Network. Comments on Department of Energy's Emergency Order To Resume Limited Operation at Mirant's Potomac River Generating Station and Proposed Mirant Compliance Plan Answer of Potomac Electric Power Company and PJM lnterconnection, L.L.C. to the October 6, 2005 motion filed by the Virginia Department of
Special test configurations and $K$-stability of Fano varieties
Let $X$ be a Fano manifold. For any given test configuration $(\\mX, \\mL)$ of $(X, -rK_X)$, we modify it by first taking the log canonical modification and then using the minimal model program (MMP) with scaling. We show that the Donaldson-Futaki invariant is always non-increasing along the process. If $\\rho(X)=1$, then the end product is a test configuration with the central fibre being an irreducible normal $\\mathbb{Q}$-Fano variety. This implies that, when $X$ is Fano with $\\rho(X)=1$, to test $K$-(semi)stability, we only need to test on the special test configurations. We also show by a counter-example that the `right' definition of $K$-(poly)stability should only involve normal test configurations.
Li, Chi
High temperature solid electrolyte fuel cell configurations and interconnections
High temperature fuel cell configurations and interconnections are made including annular cells having a solid electrolyte sandwiched between thin film electrodes. The cells are electrically interconnected along an elongated axial outer surface.
Isenberg, Arnold O. (Forest Hills, PA)
Configuring Client PCs for use with Project Assessment and Reporting...
to it, you may follow these directions yourself. 1.2 Installation of ActiveX Control WINDOWS XP 1. Log onto the workstation to be configured using an IDPassword that can perform...
The simol modeling language for simulation and (re-)configuration
From automotive and up to telecommunication industry, configuration and simulation are used for solving complex problems connected to the ever growing number of components, which have to work together. To assist these needs, many tools are nowadays available. ...
Iulia Nica; Franz Wotawa
Constrained Density-Functional Theory--Configuration Interaction
In this thesis, I implemented a method for performing electronic structure calculations, "Constrained Density Functional Theory-- Configuration Interaction" (CDFT-CI), which builds upon the computational strengths of Density ...
Kaduk, Benjamin James
Configuring Networks and Devices with Simple Network Management Protocol (SNMP)
This document is written for readers interested in the Internet Standard Management Framework and its protocol, the Simple Network Management Protocol (SNMP). In particular, it offers guidance in the effective use of SNMP for configuration management. ...
M. MacFaden; D. Partain; J. Saperia; W. Tackabury
A Highly Configurable Vortex Initialization Method for Tropical Cyclones
A highly configurable vortex initialization methodology has been constructed in order to permit manipulation of the initial vortex structure in numerical models of tropical cyclones. By using distinct specifications of the flow in the boundary ...
Eric D. Rappin; David S. Nolan; Sharanya J. Majumdar
CRAD, Configuration Management Assessment Plan | Department of Energy
Configuration Management Assessment Plan Configuration Management Assessment Plan CRAD, Configuration Management Assessment Plan Performance Objective: The objective of this assessment is to determine whether a Configuration Management Program (CM) is in place which allows for the availability and retrievability of accurate information, improves response to design and operational decisions, enhances worker safety, increases facility safety and reliability, increases efficiency of work efforts, and helps maintain integrity of interfacing orders. Criteria: The CM program supports DOE program implementation through the following: It provides the mechanisms for identifying, cataloging, and maintaining the design requirements and design basis (established to satisfy DOE O 420.1 Facility Safety). It carries forward the technical baseline established in the design
Modeling of NOx formation in circular laminar jet flames
Emissions of oxides of nitrogen (NOx) from combustion devices is a topic of tremendous current importance. The bulk of the review of NOx emissions has been in the field of turbulent jet flames. However laminar jet flames have provided much insight into the relative importance of NOx reaction pathways in non premixed combustion for various flame conditions. The existing models include detailed chemistry kinetics for various species involved in the flame. These detailed models involve very complex integration of hundreds of chemical reactions of various species and their intermediates. Hence such models are highly time consuming and also normally involve heavy computational costs. This work proposes a numerical model to compute the total production of NOx in a non-premixed isolated circular laminar jet flame. The jet consists of the fuel rich inner region and the O2 rich outer region. The model estimates both thermal NOx and prompt NOx assuming single step kinetics for NOx formation and a thin flame model. Further the amount of air entrainment by jet depends upon the Sc number of fuel. The higher the Sc number, the higher is the air entrained which lowers the flame temperature and hence NOx formation. With increasing Sc number, flame volume increases which leads to an increase in the NOx formation. The effect of the Sc number variation on the net production of NOx and flame structure is also investigated. The effect of equilibrium chemistry for CO2 CO + 1/2 O2 and H2O H2 +1/2 O2 on total NOx emission is studied. Also the effect of both CO2 and H2O equilibrium is considered simultaneously and the net x NO formation for propane is 45 ppm. The split between pre-flame and post-flame regions is also investigated. For Propane, 96% of NO emissions occur in the pre-flame region and about 4% in the post-flame region. The model predictions are compared with experimental values of NOx missions reported elsewhere.
Siwatch, Vivek
Radio Frequency Station - Beam Dynamics Interaction in Circular Accelerators
The longitudinal beam dynamics in circular accelerators is mainly defined by the interaction of the beam current with the accelerating Radio Frequency (RF) stations. For stable operation, Low Level RF (LLRF) feedback systems are employed to reduce coherent instabilities and regulate the accelerating voltage. The LLRF system design has implications for the dynamics and stability of the closed-loop RF systems as well as for the particle beam, and is very sensitive to the operating range of accelerator currents and energies. Stability of the RF loop and the beam are necessary conditions for reliable machine operation. This dissertation describes theoretical formalisms and models that determine the longitudinal beam dynamics based on the LLRF implementation, time domain simulations that capture the dynamic behavior of the RF station-beam interaction, and measurements from the Positron-Electron Project (PEP-II) and the Large Hadron Collider (LHC) that validate the models and simulations. These models and simulations are structured to capture the technical characteristics of the system (noise contributions, non-linear elements, and more). As such, they provide useful results and insight for the development and design of future LLRF feedback systems. They also provide the opportunity to study diverse longitudinal beam dynamics effects such as coupled-bunch impedance driven instabilities and single bunch longitudinal emittance growth. Coupled-bunch instabilities and RF station power were the performance limiting effects for PEP-II. The sensitivity of the instabilities to individual LLRF parameters, the effectiveness of alternative operational algorithms, and the possible tradeoffs between RF loop and beam stability were studied. New algorithms were implemented, with significant performance improvement leading to a world record current during the last PEP-II run of 3212 mA for the Low Energy Ring. Longitudinal beam emittance growth due to RF noise is a major concern for LHC. Simulations studies and measurements were conducted that clearly show the correlation between RF noise and longitudinal bunch emittance, identify the major LLRF noise contributions, and determine the RF component dominating this effect. With these results, LHC upgrades and alternative algorithms are evaluated to reduce longitudinal emittance growth during operations. The applications of this work are described with regard to future machines and analysis of new technical implementations, as well as to possible future work which would continue the directions of this dissertation.
Mastoridis, Themistoklis; /Stanford U., Elect. Eng. Dept. /SLAC
Configuration management program plan for Hanford site systems engineering
This plan establishes the integrated configuration management program for the evolving technical baseline developed through the systems engineering process. This configuration management program aligns with the criteria identified in the DOE Standard, DOE-STD-1073-93. Included are specific requirements for control of the systems engineering RDD-100 database, and electronic data incorporated in the database that establishes the Hanford site technical baseline.
Hoffman, A.G.
A DYNAMICALLY CONFIGURABLE ENVIRONMENT FOR HIGH Performance Computing
Current tools available for high performance computing require that all the computing nodes used in a parallel execution be known in advance: the execution environment must know where the different "chunks" of programs will be executed, and each computer involved in the execution must be properly configured. In this paper, we describe how the ) environment may be used to dynamically locate available computers to perform such computations and how these computers are dynamically configured.
Nabil Abdennadher; Gilbert Babin; Peter Kropf; Gilbert Babin �; Peter Kropf �; Pierre Kuonen
The Quantum Configuration Space of Loop Quantum Cosmology
The article gives an account of several aspects of the space known as the Bohr compactification of the line, featuring as the quantum configuration space in loop quantum cosmology, as well as of the corresponding configuration space realization of the so-called polymer representation. Analogies with loop quantum gravity are explored, providing an introduction to (part of) the mathematical structure of loop quantum gravity, in a technically simpler context.
J. M. Velhinho
Comparison of Ultrasonic Examination Detection Capabilities of Safe-end Joint Configuration to Other Reactor Coolant Loop Joint Configurations
The purpose of this document is to compare the ultrasonic examination detection capabilities of the RPV outlet nozzle-to-safe end-to-cast pipe joint configuration to other reactor coolant loop (RCL) cast stainless steel (CSS) configurations. The comparison presented is based on results obtained from the 1988 Wolf Creek and 1993 Northeast/Yankee Atomic CSS workshops. Both workshops utilized CSS specimens from the Westinghouse Owners Group (WOG) set as well as other specimens.
Linear- and circular-polarization photoionization angular distributions in H{sub 2} and H{sub 2}{sup +} by attosecond xuv laser pulses
Numerical solutions of the time-dependent Schroedinger equation, using a new unitary numerical method, are used to obtain gauge-independent photoionization angular distributions for two-dimensional (planar) models of aligned H{sub 2} and H{sub 2}{sup +} molecules in different electronic states. Simulations are performed with few-cycle attosecond (as) extreme-ultraviolet (xuv) laser pulses at wavelengths {lambda}= 10 nm [{omega}= 4.56 a.u. (atomic units), {tau}=2{pi}/{omega}= 1.38 a.u. = 33.4 as], and {lambda}= 5 nm ({omega}= 9.11 a.u., {tau}= 16.7 as) for linear and circular polarization ionizations at R{sub e}=1.675 a.u., where molecular orbital configurations dominate for which the electron wavelengths {lambda}{sub e{>=}}R{sub e} and at large internuclear distance R=10 a.u. ({lambda}{sub e}configurations including ionic states H{sup +}H{sup -} are more appropriate. The simulations allow one to investigate the effects of electron correlation and entanglement in H{sub 2} at different R due to electron spin exchange as compared to the delocalized one-electron H{sub 2}{sup +} system. An ultrashort (delta function) pulse model is used to interpret interferences in momentum distributions.
Yuan, Kai-Jun; Lu Huizhong; Bandrauk, Andre D [Laboratoire de Chimie Theorique, Faculte des Sciences, Universite de Sherbrooke, Sherbrooke, Quebec, J1K 2R1 (Canada)
Configuration of Hopper, NERSC's Cray XE6 System
Configuration Configuration Configuration Hopper is NERSC's first peta-flop system, a Cray XE6, with a peak performance of 1.28 Petaflops/sec, 153,216 compute cores for running scientific applications, 217 Terabytes of memory, and 2 Petabytes of online disk storage. MC-proc.png Compute Nodes Hopper has 6,384 compute nodes made up of 2 twelve-core AMD 'MagnyCours'. Read More » login.jpg Login Nodes When you ssh to hopper.nersc.gov, you are connecting to a "login node." Read More » jaguar xt4 Interconnect A description of the custom Cray-designed network that Hopper uses for inter-node communication. Read More » xe6blade.png Support Nodes A description of other kinds of nodes included in Hopper for job launch, file systems, networking, and other services. Read More »
Oak Ridge National Laboratory High Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR CRAD, Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR February 2007, A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Configuration Managment Program portion of an Operational Readiness Review of the Oak Ridge National Laboratory, High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Configuration Management - Oak Ridge National Laboratory High Flux
Hydrodynamics of undulatory fish schooling in lateral configurations
The thrust benefits of lateral configurations of two-dimensional undulating fish-like bodies are investigated using high-fidelity numerical simulation. The solution of the Navier--Stokes equations is carried out with a viscous vortex particle method. Configurations of tethered pairs of fish arranged side by side are studied by varying the lateral separation distance and relative phase difference. It is shown that, in mirroring symmetry, the fish in the pair augment each other's thrust even at relatively large separations (up to ten body lengths). At small distances, this augmentation is primarily brought about by a peristaltic pumping in the gap between the fish, whereas at larger distances, the thrust is affected by subtle changes in the vortex shedding at the tail due to interactions with the other fish. In cases without symmetric undulation, one fish always draws more benefit from the interaction than the other. Finally, lateral configurations with three fish are studied with mirroring symmetry between nei...
Zhang, Li Jeany
T-596: 0-Day Windows Network Interception Configuration Vulnerability |
6: 0-Day Windows Network Interception Configuration 6: 0-Day Windows Network Interception Configuration Vulnerability T-596: 0-Day Windows Network Interception Configuration Vulnerability April 6, 2011 - 5:48am Addthis PROBLEM: 0-Day exploit of IPv4 and IPv6 mechanics and how it applies to Microsoft Windows Operating systems. PLATFORM: Microsoft Operating Systems (OS) Windows Vista, Windows 7, and Windows 2008 Server ABSTRACT: The links below describe a parasitic IPv6 layered over a native IPv4 network. This attack can be used to stage potential man-in-the-middle (MITM) attacks on IPv4 traffic. Please see the "Other Links" section below, as it provides an external URL reference. reference LINKS: InfoSec Institute - SLAAC Attack Cisco Threat Comparison and Best-Practice White Paper IMPACT ASSESSMENT: High
A one-shot configurable-cache tuner for improved energy and performance
We introduce a new non-intrusive on-chip cache-tuning hardware module capable of accurately predicting the best configuration of a configurable cache for an executing application. Previous dynamic cache tuning approaches change the cache configuration ...
Ann Gordon-Ross; Pablo Viana; Frank Vahid; Walid Najjar; Edna Barros
Method for making precisely configured flakes useful in optical devices
Precisely configured, especially of geometric shape, flakes of liquid crystal material are made using a mechanically flexible polymer mold with wells having shapes which are precisely configured by making the mold with a photolithographically manufactured or laser printed master. The polymer liquid crystal is poured into the wells in the flexible mold. When the liquid crystal material has solidified, the flexible mold is bent and the flakes are released and collected for use in making an electrooptical cell utilizing the liquid crystal flakes as the active element therein.
Trajkovska-Petkoska, Anka (Rochester, NY); Jacobs, Stephen D. (Pittsford, NY); Kosc, Tanya Z. (Rochester, NY); Marshall, Kenneth L. (Rochester, NY)
Final Land Configuration for the Rocky Flats Environmental Technology Site
Closure of the Rocky Flats Environmental Technology Site (RFETS) has been completed. The future land use of the site is designated as a National Wildlife Refuge. A joint effort between Kaiser-Hill, Department of Energy, U.S. Fish and Wildlife Service, Environmental Protection Agency, State of Colorado, and other stakeholders was initiated to provide direction for developing the final land configuration. Through early identification of issues and developing mutually agreeable solutions, the final land configuration of the site was successfully completed. (authors)
Stegen, R. L.; Kapinos, J. M.; Wehner, J. P.; Snyder, B. [Parsons, 1700 Broadway, Suite 900, Denver, Colorado 80290 (United States); Davis, R. W. [Kaiser-Hill Company, LLC, 9193 S. Jamaica, Englewood, Colorado 80112 (United States)
A soft metal with low wear resistance (6000 series aluminum), was used to minimize run time while maximizing wear rate. Two paddle configurations were tested, with the first four paddles after the augers replaced by the wear paddles. The first configuration was all flat paddles, with the first paddle not aligned with the augers and is consistent with present SPF mixer. The second configuration had helical paddles for the first three stages after the augers and a flat paddle at the fourth stage. The first helical paddle was aligned with the auger flight for the second configuration. The all flat paddle configuration wear rate was approximately double the wear rate of the helical paddles for the first two sets of paddles after the augers. For both configurations, there was little or no wear on the third and fourth paddle sets based on mass change, indicating that the fully wetted premix materials are much less abrasive than the un-wetted or partially wetted premix. Additionally, inspection of the wear surface of the paddles at higher magnification showed the flat paddles were worn much more than the helical and is consistent with the wear rates. Aligning the auger discharge flight with the first set of helical paddles was effective in reducing the wear rate as compared to the flat paddle configuration. Changing the paddle configuration from flat to helical resulted in a slight increase in rheological properties. Although, both tests produced grout-like material that is within the processing rage of the SPF, it should be noted that cement is not included in the premix and water was used rather than salt solution, which does affect the rheology of the fresh grout. The higher rheological properties from the helical wear test are most likely due to the reduced number of shearing paddles in the mixer. In addition, there is variation in the rheological data for each wear test. This is most likely due to the way that the dry feeds enter the mixer from the dry feeder. The premix is discharged from the hopper in an unsteady fashion, where irregular sized clumps were observed leaving the discharge of the auger, though the auger speed is constant.
Reigel, M.; Fowley, M.; Pickenheim, B.
Circular Rydberg states of atomic hydrogen in an arbitrary magnetic field
We report a theoretical scheme using a B-spline basis set to improve the poor computational accuracy of circular Rydberg states of hydrogen atoms in the intermediate magnetic field. This scheme can produce high accuracy energy levels and valid for an arbitrary magnetic field. Energy levels of hydrogen are presented for circular Rydberg states with azimuthal quantum numbers $|m|$ = 10 - 70 as a function of magnetic field strengths ranging from zero to 2.35 $\\times$ 10$^9$ T. The variation of spatial distributions of electron probability densities with magnetic field strengths is discussed and competition between Coulomb and magnetic interactions is illustrated.
Zhao, L B; Du, M L
Preconceptual ABC design definition and system configuration layout
This document is the conceptual design document for the follow-on to the Molten Salt Breeder Reactor, known as the ABC type reactor. It addresses blanket design options, containment options, off-gas systems, drainage systems, and components/layouts of the primary, secondary, and tertiary systems, and it contains a number of diagrams for the configuration of the major systems.
Barthold, W. [Barthold & Associates, Inc., Knoxville, TN (United States)
Design of Coal Mine Monitoring and Controlling Configuration Software
Because of the limit of the domestic configuration software which is in the use of scrutinizing the coal mine, the ActiveX technique is discussed and the design of the safety of coal mine, which utilize the ActiveX technique, is actualized. The fig of ... Keywords: ActiveX, the safety surveillance, the database
An Weipeng; Li Miao
Using image schemata to represent meaningful spatial configurations
Spatial configurations have a meaning to humans. For example, if I am standing on a square in front of a building, and this building has a door, then this means to me that this door leads into the building. This type of meaning can be nicely captured ...
Urs-Jakob R�etschi; Sabine Timpf
A Mirnov loop array for field-reversed configurations
An array of 64 magnetic pick-up loops has been used for stability studies of large field-reversed configurations in the FRX-C/LSM device. This array proved reliable, could resolve signals of a few Gauss, and allowed the detection of several plasma instabilities. 3 refs., 4 figs.
Tuszewski, M.
Ensuring correctness during process configuration via partner synthesis
Variants of the same process can be encountered within one organization or across different organizations. For example, different municipalities, courts, and rental agencies all need to support highly similar processes. In fact, procurement and sales ... Keywords: C-YAWL, Configurable process model, Operating guideline, Petri net
Wil M. P. van der Aalst; Niels Lohmann; Marcello La Rosa
Self-configuring localization systems: Design and Experimental Evaluation
Embedded networked sensors promise to revolutionize the way we interact with our physical environment and require scalable, ad hoc deployable and energy-efficient node localization/positioning.This paper describes the motivation, design, implementation, ... Keywords: Location, localization, self-configuration, sensor networks
Nirupama Bulusu; John Heidemann; Deborah Estrin; Tommy Tran
Research on IPv6 address configuration for wireless sensor networks
The paper proposes an IPv6 address configuration scheme for wireless sensor networks. In the scheme, one wireless sensor network is divided into multiple clusters and the scheme creates the IPv6 address formats for the cluster heads and the cluster members ...
Xiaonan Wang; Demin Gao
Composite spherically symmetric configurations in Jordan-Brans-Dicke theory
In this article, a study of the scalar field shells in relativistic spherically symmetric configurations has been performed. We construct the composite solution of Jordan-Brans-Dicke field equation by matching the conformal Brans solutions at each junction surfaces. This approach allows us to associate rigorously with all solutions as a single glued "space", which is a unique differentiable manifold M^4.
S. Kozyrev
Theorizing HR Intranets: Contextual, Strategic and Configurative Explanations
This paper presents the results of a longitudinal exploratory survey based on a sample of French firms. Different contexts of Intranet, as well as introduction, development stages, performance and Intranet content are presented. Three approaches are ... Keywords: Configurative Approach, Corporate Intranet, HR Intranet, Longitudinal Survey, Specialized Intranet, Strategic Alignment, Technological Infusion
V�ronique Guilloux; Florence Laval; Michel Kalika
Anomalous recovery of damped radial modes in a circular?sector duct with locally heated flow
It is often desirable to predict acoustic propagation in a circular duct carrying a locally heated flow. Common examples include jet engines and certain industrial and commercial burners whose combustion?related noise can be an environmental problem if allowed to penetrate into the surroundings. In these cases axial gradients in the steady flow variables
J. R. Maham; S.?Y. Yeh
The Motion and Removal Efficiency of Particles in Circular Tube Settlers
Based on the assumption that flow pattern in tube settlers is laminar and the distribution of flow velocity is a circumgyratetional paraboloid, general hydraulic equations are deduced, with consideration of the effectors of acceleration and initial fall ... Keywords: Motion, Circular tube settlers, Hydraulic calculation, Removal efficiency
Min Xie; Zhou Shi; Xiaobo Liu
Angular momentum transfer between a circularly polarized photon and an electron spin in double quantum dots
We propose an experimental scheme of photon-spin quantum interface using a semiconductor double quantum dot. A polarized electron spin is excited by a circularly polarized photon. We detect the spin state applying Pauli spin blockade which is often employed to detect orientation of a single electron spin in double quantum dots.
Asayama, T. [Department of Applied Physics and QPEC, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo (Japan); Solid State Memories Development Dept, Sony Corporation, Atsugi, Kanagawa (Japan); Fujita, T.; Kiyama, H.; Oiwa, A. [Department of Applied Physics and QPEC, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo (Japan); Tarucha, S. [Department of Applied Physics and QPEC, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo (Japan); Institute for Nano Quantum Electronics, University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo (Japan)
Research on Resource Value Flow Accounting Based on Circular Economy for Coal-fired Power Plant
This paper presents the methodology of resource value flow accounting developed for a study which combined material flow analysis?MFA? for the coal-fired power generation plant, in order to shed light on concepts such as resource productivity ... Keywords: Circular economy, Coal-fired power plant, Material flow analysis, Resource value flow accounting
Xie Zhiming; Yi Xuan
Finite element analysis of elastohydrodynamic circular journal bearing with micropolar lubricants
In this paper the effect of deformation of the bearing liner on the static characteristics of a circular journal bearing operating with micropolar fluid is analysed. Lubricating oil containing additives and contaminants is modeled as micropolar fluid. ... Keywords: deformation coefficient, elastohydrodynamic, micropolar lubricant
V. P. Sukumaran Nair; K. Prabhakaran Nair
Wavefront reconstruction of elevation circular synthetic aperture aperture radar imagery using a cylindrical Green's function
Elevation Circular Synthetic Aperture Radar (E-CSAR) is a novel radar modality used to form radar images from data sets acquired along a complete or even a segment of a cylindrical geometry above a given scan area. Due to the nonlinear nature of the ...
Daniel Flores-Tapia; Gabriel Thomas; Stephen Pistorius
Design guide for calculating fluid damping for circular cylindrical structures. [LMFBR
Fluid damping plays an important role for structures submerged in fluid, subjected to flow, or conveying fluid. This design guide presents a summary of calculational procedures and design data for fluid damping for circular cylinders vibrating in quiescent fluid, crossflow, and parallel flow.
Subsonic Aerodynamic Characteristics of a Circular Body Earth-to-Orbit Vehicle
A test of a generic reusable earth-to-orbit transport was conducted in the 7- by 10-Foot high-speed tunnel at the Langley Research Center at Mach number 0.3. The model had a body with a circular cross section and a thick clipped delta wing as the major ...
Jr Roger A. Lepsch; Ware George M.; MacConochie Ian O.
Protein Circular Dichroism Data Bank (PCDDB): Data Bank and Website Design
;5:567571. 9. Wien F, Wallace BA. Calcium fluoride micro cells for synchrotron radiation circular dichroism modeling and drug design pro- gram. J Mol Graphics 1990;8:5256. 7. Guideline Q6B, International Conference
Janes, Bob
Analysis of Natural Gas Fuel Cell Plant Configurations
Analysis of Natur Analysis of Natur al Gas Fuel Cell Plant Configur ations March 24, 2011 DOE/NETL-2011/1486 Analysis of Natur al Gas Fuel Cell Plant Configur ations Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement,
Stretched two-nucleon configurations in [sup 210]Pb
The [sup 208]Pb([alpha],[sup 2]He)[sup 210]Pb reaction has been investigated at about 55 MeV incident energy. The angular distributions of prominent transitions were analyzed with the distorted-wave Born approximation. At low excitation energies, states built on 2[ital g][sub 9/2] single-particle strength are found, while at higher energies configurations including 1[ital j][sub 15/2] strength dominate. Together with the predictions of the crude shell model the main configurations of most observed transitions were identified. The results are compared to shell-model calculations with the Kuo-Herling residual interaction modified by Warburton and Brown.
von Neumann-Cosel, P.; Schenk, P.; Fister, U.; Trelle, T.K.; Jahn, R. (Institut fuer Kernphysik, Technische Hochschule Darmstadt, DW-6100 Darmstadt (Germany) Institut fuer Strahlen- und Kernphysik, Universitaet Bonn, DW-5300 Bonn (Germany))
A Xylophone Configuration for a third Generation Gravitational Wave Detector
Achieving the demanding sensitivity and bandwidth, envisaged for third generation gravitational wave (GW) observatories, is extremely challenging with a single broadband interferometer. Very high optical powers (Megawatts) are required to reduce the quantum noise contribution at high frequencies, while the interferometer mirrors have to be cooled to cryogenic temperatures in order to reduce thermal noise sources at low frequencies. To resolve this potential conflict of cryogenic test masses with high thermal load, we present a conceptual design for a 2-band xylophone configuration for a third generation GW observatory, composed of a high-power, high-frequency interferometer and a cryogenic low-power, low-frequency instrument. Featuring inspiral ranges of 3200Mpc and 38000Mpc for binary neutron stars and binary black holes coalesences, respectively, we find that the potential sensitivity of xylophone configurations can be significantly wider and better than what is possible in a single broadband interferometer.
Stefan Hild; Simon Chelkowski; Andreas Freise; Janyce Franc; Nazario Morgado; Raffaele Flaminio; Riccardo DeSalvo
Compact toroid experiments: spheromaks and field-reversed configurations
Compact toroids (CT) containing both poloidal and toroidal magnetic field spheromaks, are generated in the CTX experiment using a magnetized coaxial plasma gun, and are trapped and stably confined in an oblate flux conserver. Total configuration lifetimes are observed up to approx. 0.8 ms, consistent with classical resistive decay. The field reversed configuration (FRC) is a high beta, axisymmetric, highly prolate compact toroid, containing only poloidal magnetic field, formed in a field-reversed theta pinch. A quiescent confinement period of 30 to 90 ..mu..s with T/sub i/ approx. 200 to 500 eV and n approx. 5 x 10/sup 15/ cm/sup -3/ is terminated by an n = 2 rotational instability. The FRC is stable to MHD modes including the tilting instability.
Quinn, W.E.
Switching surge test results ehv substation bus configurations
The industry has been actively engaged in, and has presented many results of, ehv switching surge test programs associated with transmission line designs. It would seem equally important that similar efforts be staged relative to ehv switching surge capabilities of the terminal equipment as it would normally be found in its variety of configurations. Toward this end, a series of switching surge test programs on a number of substation bus configurations was conducted. Particular emphasis was placed on the determination of switching surge characteristics of the air gaps found in ehv substation bus designs. The test data are presented with pertinent data evaluations in an attempt to provide a more refined basis for the application of final judgments to bus designs for 345, 500, and 750 kV substations.
Hertig, G.E.; Kelly, W.B.
Configuration Of W�rtsil� Diesel Power Plant's Fuel System
The trend in modern production is to produce more tailored products with less design effort. Automation of design process is a modern way to increase effectiveness of the order/delivery process. This paper describes a methodology for configuration design of one-of-a-kind products. This methodology has been implemented with the cooperation of knowledge-based engineering software, an object-oriented database management system and, a CAD system. The methodology has been applied to two industrial test cases. This paper describes the application of the methodology in the configuration of diesel power plants' fuel systems. The experiences gained from the test cases show that knowledge automation can be realized with the efficient co-operation of the different tools. INHALTSANGABE Der Trend in der modernen Fertigung ist, mehr ma�geschneiderte Produkte mit weniger Design Aufwand herzustellen. Die Automatisierung des Konstruktionsprozesses ist ein modernes Mittel, die Effektivit�t des Bestell- ...
Anne Aaltonen; Pasi Paasiala; Kari Tanskanen; M. Sc; M. Sc; M. Sc; Asko Riitahuhta
Plasma-Neutrals Simulation of Linear Configurations for PSI
Coupled fluid plasma and kinetic Monte Carlo neutrals simulations in a linear configuration are reported. The configuration mimics the tokamak divertor plasma channel contacting a target surface with nearby wall. We calculate the parameters of the source plasmas, 3-5m from the target, required to produce high recycling target plasmas recently simulated for ITER. It is shown that the source plasma needs to deliver heat fluxes of 10-20MW/m2, ion fluxes of 1023/m2/s, densities of 2-6x1019/m3, and electron and ion temperatures of 15-30eV over a plasma radius of 5-6cm. The neutral H and H2 fluxes to the vessel wall are calculated to be comparable to those measured in the divertor regions of today s tokamaks. These results identify some design features for a prospective plasma material test station and the research required for this plasma source.
Peng, Yueng Kay Martin [ORNL; Owen, Larry W [ORNL; Rapp, Juergen [ORNL; Bonnin, X. [CNRS-LIMHP, Universite, Paris; Canik, John [ORNL
Deep Trek Re-configurable Processor for Data Acquisition (RPDA)
This report summarizes technical progress achieved during the cooperative research agreement between Honeywell and U.S. Department of Energy to develop a high-temperature Re-configurable Processor for Data Acquisition (RPDA). The RPDA development has incorporated multiple high-temperature (225C) electronic components within a compact co-fired ceramic Multi-Chip-Module (MCM) package. This assembly is suitable for use in down-hole oil and gas applications. The RPDA module is programmable to support a wide range of functionality. Specifically this project has demonstrated functional integrity of the RPDA package and internal components, as well as functional integrity of the RPDA configured to operate as a Multi-Channel Data Acquisition Controller. This report reviews the design considerations, electrical hardware design, MCM package design, considerations for manufacturing assembly, test and screening, and results from prototype assembly and characterization testing.
Bruce Ohme; Michael Johnson
Boundary Conditions for Three-Body Scattering in Configuration Space
The asymptotic behavior of three-body scattering wave functions in configuration space is studied by considering a model equation that has the same asymptotic form as the Faddeev equations. Boundary conditions for the wave function are derived, and their validity is verified by numerical calculations. It is shown that these boundary conditions for the partial differential equation can be used to obtain accurate numerical solutions for the wave function.
G. L. Payne; W. Gloeckle; J. L. Friar
Component configuration control system development at EBR-II
One ofthe major programs being pursued by the EBR-II Division of Argonne National Laboratory is to improve the reliability of plant control and protection systems. This effort involves looking closely at the present state of the art and needs associated with plant diagnostic, control and protection systems. One of the areas of development at EBR-II involves a component configuration control system (CCCS). This system is a computerized control and planning aid for the nuclear power operator.
Monson, L.R.; Stratton, R.C.
System Configured For Applying Multiple Modifying Agents To A Substrate.
The present invention is related to the modifying of substrates with multiple modifying agents in a single continuous system. At least two processing chambers are configured for modifying the substrate in a continuous feed system. The processing chambers can be substantially isolated from one another by interstitial seals. Additionally, the two processing chambers can be substantially isolated from the surrounding atmosphere by end seals. Optionally, expansion chambers can be used to separate the seals from the processing chambers.
Propp, W. Alan (Idaho Falls, ID); Argyle, Mark D. (Idaho Falls, ID); Janikowski, Stuart K. (Idaho Falls, ID); Fox, Robert V. (Idaho Falls, ID); Toth, William J. (Idaho Falls, ID); Ginosar, Daniel M. (Idaho Falls, ID); Allen, Charles A. (Idaho Falls, ID); Miller, David L. (Idaho Falls, ID)
A directory service for configuring high-performance distributed computations
High-performance execution in distributed computing environments often requires careful selection and configuration not only of computers, networks, and other resources but also of the protocols and algorithms used by applications. Selection and configuration in turn require access to accurate, up-to-date information on the structure and state of available resources. Unfortunately, no standard mechanism exists for organizing or accessing such information. Consequently, different tools and applications adopt ad hoc mechanisms, or they compromise their portability and performance by using default configurations. We propose a Metacomputing Directory Service that provides efficient and scalable access to diverse, dynamic, and distributed information about resource structure and state. We define an extensible data model to represent required information and present a scalable, high-performance, distributed implementation. The data representation and application programming interface are adopted from the Lightweight Directory Access Protocol; the data model and implementation are new. We use the Globus distributed computing toolkit to illustrate how this directory service enables the development of more flexible and efficient distributed computing services and applications.
Fitzgerald, S.; Kesselman, C. [Univ. of Southern California, Marina del Rey, CA (United States). Information Sciences Institute; Foster, I. [Argonne National Lab., IL (United States)] [and others
Energy spread inhibition of compact electron bunch driven by circularly polarized laser pulse
The problem of energy dispersion of a direct laser accelerated electron bunch emerging from a nano-meshed graphene target is investigated. To study the effects of the laser polarization state on the energy spread, numerical calculations and particle-in-cell simulations of evolving one-dimensional confined electron bunch dynamics are performed. It is proved that a circularly polarized laser pulse can inhibit energy dispersion more efficiently than a linearly polarized laser pulse with the same laser and target parameters. That is because the Coulomb expansion of the electron bunch gets more attenuated for a circularly polarized laser pulse compared with a linearly polarized pulse due to the slowly varying temporal laser intensity.
Wen Meng [State Key Laboratory of Nuclear Physics and Technology, and Key Lab of High Energy Density Physics Simulation, CAPT, Peking University, Beijing 100871 (China); Institute of Photonics and Photon-Technology, Northwest University, Xi'an 710069 (China); Wu Haicheng; Lu Yuanrong; Chen Jiaer; Yan, Xueqing [State Key Laboratory of Nuclear Physics and Technology, and Key Lab of High Energy Density Physics Simulation, CAPT, Peking University, Beijing 100871 (China); Jin Luling [Department of Physics, Northwest University, Xi'an 710069 (China)
Parity non-conservation in nuclear excitation by circularly polarized photon beam
We show that the asymmetries in the nuclear resonance fluorescence processes with a circular polarized photon beam may be used as a tool for studying the parity non-conservation (PNC) in nuclei. The PNC asymmetry measurements both in exciting the parity doublet states and in exciting the discrete states near the ground states with parity mixing are discussed. We derived the formulae needed for measuring the PNC asymmetries.
A. I. Titov; M. Fujiwara; K. Kawase
Energy levels of periodic solutions of the circular 2+2 Sitnikov problem
We study a 2+2 body problem introduced in a previous paper as the circular double Sitnikov problem. Since the secondary bodies are moving on the same perpendicular line where evolve the primaries, almost every solution is a collision orbit. We extend the solutions beyond collisions with a symplectic regularization and study the set of energy surfaces that contain periodic orbits and their foliations .
Jim�nez-P�rez, H
Evaluating the Potential of Commercial GIS for Accelerator Configuration Management
The Geographic Information System (GIS) is a tool used by industries needing to track information about spatially distributed assets. A water utility, for example, must know not only the precise location of each pipe and pump, but also the respective pressure rating and flow rate of each. In many ways, an accelerator such as CEBAF (Continuous Electron Beam Accelerator Facility) can be viewed as an ''electron utility''. Whereas the water utility uses pipes and pumps, the ''electron utility'' uses magnets and RF cavities. At Jefferson lab we are exploring the possibility of implementing ESRI's ArcGIS as the framework for building an all-encompassing accelerator configuration database that integrates location, configuration, maintenance, and connectivity details of all hardware and software. The possibilities of doing so are intriguing. From the GIS, software such as the model server could always extract the most-up-to-date layout information maintained by the Survey & Alignment for lattice modeling. The Mechanical Engineering department could use ArcGIS tools to generate CAD drawings of machine segments from the same database. Ultimately, the greatest benefit of the GIS implementation could be to liberate operators and engineers from the limitations of the current system-by-system view of machine configuration and allow a more integrated regional approach. The commercial GIS package provides a rich set of tools for database-connectivity, versioning, distributed editing, importing and exporting, and graphical analysis and querying, and therefore obviates the need for much custom development. However, formidable challenges to implementation exist and these challenges are not only technical and manpower issues, but also organizational ones. The GIS approach would crosscut organizational boundaries and require departments, which heretofore have had free reign to manage their own data, to cede some control and agree to a centralized framework.
T.L. Larrieu; Y.R. Roblin; K. White; R. Slominski
Novel reactor configuration for synthesis gas conversion to alcohols
Research continued on the conversion of synthesis gas to alcohols and reactor configuration. Objectives for this quarter: the project stated on October 1, 1989 and according to the Task Schedule provided in the original work breakdown schedule, Task I was to be completed in the first quarter and Task II to be started. Task I consisted of construction of the slurry reactor set-up to be used in Task IV for determination of the reactor kinetics and procurement of the parts for automation equipment, separators, computer activated parts etc. for automation of the trickle bed rector and GC equipment. Task II consisted of standardization and automation of GC analysis protocols. 1 fig.
Akgerman, A.; Anthony, R.G. (Texas A and M Univ., College Station, TX (USA). Dept. of Chemical Engineering)
Stability of magnetic configurations containing the toroidal and axial fields
Stability properties of magnetic-field configurations containing the toroidal and axial field are considered. The stability is treated by making use of linear analysis. It is shown that the conditions required for the onset of instability are essentially different from those given by the necessary condition $d (s B_{\\phi})/ds > 0$, where $s$ is the cylindrical radius. The growth rate of instability is calculated for a wide range of the parameters. We argue that the instability can operate in two different regimes depending on the strength of the axial field and the profile of the toroidal field.
Bonanno, Alfio
Wideband silicon bolometers'' on the LSX field reversed configuration experiment
Silicon photodiode detectors, which have nearly flat energy response from 1 eV to 6 keV (R. Korde and L. Randall Canfield, Proc. SPIE {bold 1140}, 126 (1989)), were used as bolometers in the field reversed theta pinch experiment LSX. Plasma escaping from the field reversed configuration is naturally diverted to the ends of the vacuum enclosure. There it affects the bolometer measurements either by direct energy deposition or by emission of low energy photons. These two particle effects can be avoided by optimizing the location of the bolometers and restricting their field of view. Good agreement is observed between the silicon bolometers and a gold foil calorimeter.
Maqueda, R.J.; Wurden, G.A. (Aerospace and Energetics Research Program, FL-10, University of Washington, Seattle, Washington 98195 (United States)); Crawford, E.A. (STI Optronics, 2755 Northup Way, Bellevue, Washington 98004 (United States))
Software configuration management plan for the Hanford site technical database
The Hanford Site Technical Database (HSTD) is used as the repository/source for the technical requirements baseline and programmatic data input via the Hanford Site and major Hanford Project Systems Engineering (SE) activities. The Hanford Site SE effort has created an integrated technical baseline for the Hanford Site that supports SE processes at the Site and project levels which is captured in the HSTD. The HSTD has been implemented in Ascent Logic Corporation (ALC) Commercial Off-The-Shelf (COTS) package referred to as the Requirements Driven Design (RDD) software. This Software Configuration Management Plan (SCMP) provides a process and means to control and manage software upgrades to the HSTD system.
Mac configuration management at the Los Alamos National Laboratory
The Los Alamos National Laboratory (LANL) had a need for central configuration management of non-Windows computers. LANL has three to five thousand Macs and an equal number of Linux based systems. The primary goal was to be able to inventory all non-windows systems and patch Mc OS X systems. LANL examined a number of commercial and open source solutions and ultimately selected Puppet. This paper will discuss why we chose Puppet, how we implemented it, and some lessons we learned along the way.
Marcus, Allan B [Los Alamos National Laboratory
The circularity and stability of the IBEX energetic neutral atom (ENA) ribbon
The first sky map of energetic neutral atoms (ENAs) from the outer heliosphere measured from the Interstellar Boundary Explorer revealed the ribbon, a remarkable circular arc of enhanced ENA emission [McComas, et all, 2009] narrow in width [Fuselier, et all, 2009] and centered at ecliptic coordinate ({lambda},{beta}) = (221{sup o},39{sup o}) [Funsten et al., 2009]. The ribbon is a key signature for understanding the interaction of the heliosphere and the interstellar cloud through which we are moving [McComas, et al., 2009; Schwadron et al., 2010]. At each energy passband of the IBEX-Hi neutral atom imager, we compare the circular metrics of the ribbon in the different ENA sky maps, including the ribbon center, opening angle from the ribbon center to the ribbon, and ribbon circularity. The values of these parameters do not systematically change between maps within statistical uncertainty, suggesting that the dynamics that govern the ribbon structure do not vary on a global scale over the time frame of the maps. Assuming the ribbon ENAs of all energies originate from the same source, the time of travel of lower energy ENAs is nearly twice that of higher energy ENAs measured by IBEX. Thus, because the lower energy ions are characteristic of the ribbon structure earlier in time than the higher energy ions, we infer that this stability extends over a longer time period than that used to acquire the maps.
Funsten, Herbert O [Los Alamos National Laboratory
Cooling Configuration Design Considerations for Long-Length HTS Cables
Recent successes in demonstrating high temperature superconducting (HTS) cable systems hundreds of meters in length have inspired even longer length projects. A compact and energy efficient cooling configuration can be achieved using a counterflow-cooling arrangement. This is particularly attractive when all three phases are contained in a single cryostat because of the elimination of the space and thermal requirements of a separate liquid nitrogen return line. Future cable projects will utilize second generation (2G) wire which is expected to become lower in cost but may have different thermal requirements than first generation (1G) BSCCO wire due to the lower critical temperature and to a lesser extent, the lower thermal conductivity of the wire. HTS cable configurations will be studied with a numerical model to assess thermal hydraulic performance with AC and thermal losses; a summary of the results from the analysis will be presented. An analysis of the cable thermal- hydraulic response to over-current faults will be presented.
Demko, Jonathan A [ORNL; Duckworth, Robert C [ORNL
Snowflake divertor configuration studies for NSTX-Upgrade
Snowflake divertor experiments in NSTX provide basis for PMI development toward NSTX-Upgrade. Snowflake configuration formation was followed by radiative detachment. Significant reduction of steady-state divertor heat flux observed in snowflake divertor. Impulsive heat loads due to Type I ELMs are partially mitigated in snowflake divertor. Magnetic control of snowflake divertor configuration is being developed. Plasma material interface development is critical for NSTX-U success. Four divertor coils should enable flexibility in boundary shaping and control in NSTX-U. Snowflake divertor experiments in NSTX provide good basis for PMI development in NSTX-Upgrade. FY 2009-2010 snowflake divertor experiments in NSTX: (1) Helped understand control of magnetic properties; (2) Core H-mode confinement unchanged; (3) Core and edge carbon concentration reduced; and (4) Divertor heat flux significantly reduced - (a) Steady-state reduction due to geometry and radiative detachment, (b) Encouraging results for transient heat flux handling, (c) Combined with impurity-seeded radiative divertor. Outlook for snowflake divertor in NSTX-Upgrade: (1) 2D fluid modeling of snowflake divertor properties scaling - (a) Edge and divertor transport, radiation, detachment threshold, (b) Compatibility with cryo-pump and lithium conditioning; (2) Magnetic control development; and (3) PFC development - PFC alignment and PFC material choice.
Soukhanovskii, V A
The radial distributions of temperature, density, and gas entropy among cool-core clusters tend to be quite similar, suggesting that they have entered a quasi-steady state. If that state is regulated by a combination of thermal conduction and feedback from a central active galactic nucleus (AGN), then the characteristics of those radial profiles ought to contain information about the spatial distribution of AGN heat input and the relative importance of thermal conduction. This paper addresses those topics by deriving steady-state solutions for clusters in which radiative cooling, electron thermal conduction, and thermal feedback fueled by accretion are all present, with the aim of interpreting the configurations of cool-core clusters in terms of steady-state models. It finds that the core configurations of many cool-core clusters have entropy levels just below those of conductively balanced solutions in which magnetic fields have suppressed electron thermal conduction to {approx}1/3 of the full Spitzer value, suggesting that AGN feedback is triggered when conduction can no longer compensate for radiative cooling. And even when feedback is necessary to heat the central {approx}30 kpc, conduction may still be the most important heating mechanism within a cluster's central {approx}100 kpc.
Voit, G. M., E-mail: firstname.lastname@example.com [Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 (United States)
Shaft Siting and Configuration for Flexible Operating Mode
The purpose of this document as stated in the ''Technical Work Plan for Subsurface Design Section FY 01 Work Activities'' (CRWMS M&O 2001a, pg. 14) is to review and evaluate the most current concepts for shaft siting and configuration. The locations of the shaft sites will be evaluated in reference to the overall subsurface ventilation layout shown in Figure 1. The scope will include discussions on pad size requirements, shaft construction components such as collars, shaft stations, sumps, ground support and linings, head frames, fan ducting and facility equipping. In addition to these, shaft excavation methodologies and integration with the overall subsurface construction schedule will be described. The Technical Work Plan (TWP), (CRWMS M&O 2001a), for this document has been prepared in accordance with AP-2.21Q, ''Quality Determinations and Planning for Scientific, Engineering and Regulatory Compliance Activities''. This document will be prepared in accordance with AP-3.10Q, ''Analysis and Models''. This document contributes to Site Recommendation (SR). The intended use of this document is to provide an analysis for shaft siting and configuration criteria for subsequent construction. This document identifies preliminary design concepts that should not be used for procurement, fabrication, or construction.
Robert Boutin
Numerical Investigation of Air-Side Heat Transfer and Pressure Drop in Circular Finned-Tube Heat Exchangers.
??A three-dimensional numerical study is performed to investigate the heat transfer and pressure drop performance on the air-side of circular finned tube bundles in cross� (more)
Mon, Mi Sandar
Investigation of the effect of a circular patch of vegetation on turbulence generation and sediment deposition using four case studies
This study describes the spatial distribution of sediment deposition in the wake of a circular patch of model vegetation and the effect of the patch on turbulence and mean flow. Two difference types pf vegetation were used ...
Ortiz, Alejandra C
Report of the ICFA Beam Dynamics Workshop 'Accelerators for a Higgs Factory: Linear vs. Circular' (HF2012)
This paper is a summary report of the ICFA Beam Dynamics Workshop 'Accelerators for a Higgs Factory: Linear vs. Circular' (HF2012). It discusses four types of accelerators as possible candidates for a Higgs factory: linear e+e- colliders, circular e+e- colliders, muon collider and photon colliders. The comparison includes: physics reach, performance (energy and luminosity), upgrade potential, technology maturity and readiness, and technical challenges requiring further R&D.
Alain Blondel; Alex Chao; Weiren Chou; Jie Gao; Daniel Schulte; Kaoru Yokoya
Interface and process for enhanced transmission of non-circular ion beams between stages at unequal pressure
The invention discloses a new interface with non-circular conductance limit aperture(s) useful for effective transmission of non-circular ion beams between stages with different gas pressure. In particular, the invention provides an improved coupling of field asymmetric waveform ion mobility spectrometry (FAIMS) analyzers of planar or side-to-side geometry to downstream stages such as mass spectrometry or ion mobility spectrometry. In this case, the non-circular aperture is rectangular; other geometries may be optimum in other applications. In the preferred embodiment, the non-circular aperture interface is followed by an electrodynamic ion funnel that may focus wide ion beams of any shape into tight circular beams with virtually no losses. The jet disrupter element of the funnel may also have a non-circular geometry, matching the shape of arriving ion beam. The improved sensitivity of planar FAIMS/MS has been demonstrated in experiments using a non-contiguous elongated aperture but other embodiments (e.g., with a contiguous slit aperture) may be preferable, especially in conjunction with an ion funnel operated at high pressures.
Tang, Keqi (Richland, WA); Shvartsburg, Alexandre A. (Richland, WA); Smith, Richard D. (Richland, WA)
Complete SE[superscript 3] underwater robot control with arbitrary thruster configurations
e present a control algorithm for autonomous underwater robots with modular thruster configuration. The algorithm can handle arbitrary thruster configurations. It maintains the robot's desired attitude while solving for ...
Doniec, Marek Wojciech
Nail-it-down: nailing and fixing configuration faults in cloud environments
Faults due to configuration of resources account for majority of errors in distributed software systems. Yet, the problem of identifying faulty configuration remains at large. Current approaches for fault identification are focused on event correlation ...
Kalapriya Kannan; Anuradha Bhamidipaty
A Software Configuration Management System for the Maintenance of Nuclear Power Plant Simulators
This paper reports on the KSG experiencies to introduce a configuration management system for the maintenance of nuclear power plant simulator software. After a discussion on the KSG specific requirements on a computer based software configuration management ...
Burkhard Holl
Electrode configuration for extreme-UV electrical discharge source
It has been demonstrated that debris generation within an electric capillary discharge source, for generating extreme ultraviolet and soft x-ray, is dependent on the magnitude and profile of the electric field that is established along the surfaces of the electrodes. An electrode shape that results in uniform electric field strength along its surface has been developed to minimize sputtering and debris generation. The electric discharge plasma source includes: (a) a body that defines a circular capillary bore that has a proximal end and a distal end; (b) a back electrode positioned around and adjacent to the distal end of the capillary bore wherein the back electrode has a channel that is in communication with the distal end and that is defined by a non-uniform inner surface which exhibits a first region which is convex, a second region which is concave, and a third region which is convex wherein the regions are viewed outwardly from the inner surface of the channel that is adjacent the distal end of the capillary bore so that the first region is closest to the distal end; (c) a front electrode positioned around and adjacent to the proximal end of the capillary bore wherein the front electrode has an opening that is communication with the proximal end and that is defined by a non-uniform inner surface which exhibits a first region which is convex, a second region which is substantially linear, and third region which is convex wherein the regions are viewed outwardly from the inner surface of the opening that is adjacent the proximal end of the capillary bore so that the first region is closest to the proximal end; and (d) a source of electric potential that is connected across the front and back electrodes.
Spence, Paul Andrew (Pleasanton, CA); Fornaciari, Neal Robert (Tracey, CA); Chang, Jim Jihchyun (San Ramon, CA)
Configuration Management Plan for Tank Farm Restoration and Safe Operations Project W-314
The Configuration Management Plan for Project W-314 describes the systems, processes and procedures for implementation of applicable configuration management practices described in HNF-0842, Volume 111, Section 3.1, ''Configuration Management Implementation''. This plan is tailored specifically for use by Project W-314.
SPLat: lightweight dynamic analysis for reducing combinatorics in testing configurable systems
Many programs can be configured through dynamic and/or static selection of configuration variables. A software product line (SPL), for example, specifies a family of programs where each program is defined by a unique combination of features. Systematically ... Keywords: Automated testing, Configurable Systems, Efficiency, Software Product Lines
Chang Hwan Peter Kim; Darko Marinov; Sarfraz Khurshid; Don Batory; Sabrina Souto; Paulo Barros; Marcelo D'Amorim
The Toyota.de Car Configurator Hermann Hofstetter, Christian Harr, Elmedin Dedovic
The Toyota.de Car Configurator Hermann Hofstetter, Christian Harr, Elmedin Dedovic Human configurator on the Toyota Germany homepage has been analyzed and modified to better suit users' needs, Thomas Memmel: Lecture slide - 01_Intro_visRE_WS0607.pdf #12;The Toyota.de Car Configurator 2
Reiterer, Harald
A three-phase integrated model for product configuration change problems
Requirements of engineers or customers may result in product configuration change with product life cycle; effective management of product configuration can actually enhance productivity and customer satisfaction. This study aims to develop a three-phase ... Keywords: Fuzzy theory, Genetic algorithm, Product configuration change, Value engineering
H. S. Wang; Z. H. Che; M. J. Wang
Drum type packages are routinely used to transport radioactive material (RAM) in the U.S. Department of Energy (DOE) complex. These packages are designed to meet the federal regulations described in 10 CFR Part 71. The packages are transported in specially designed vehicles like Safe Secure Transport (SST) for safety and security. In the transport vehicles, the packages are placed close to each other to maximize the number of units in the vehicle. Since the RAM contents in the packagings produce decay heat, it is important that they are spaced sufficiently apart to prevent overheating of the containment vessel (CV) seals and the impact limiter to ensure the structural integrity of the package. This paper presents a simple methodology to assess thermal performance of a typical 9975 packaging in a transport configuration.
Gupta, N.
Reducing Turbulent Transport in Toroidal Configurations via Shaping
Recent progress in reducing turbulent transport in stellarators and tokamaks by 3D shaping using a stellarator optimization code in conjunction with a gyrokinetic code is presented. The original applications of the method focussed on ion temperature gradient transport in a quasi-axisymmetric stellarator design. Here, an examination of both other turbulence channels and other starting configurations is initiated. It is found that the designs evolved for transport from ion temperature gradient turbulence also display reduced transport from other transport channels whose modes are also stabilized by improved curvature, such as electron temperature gradient and ballooning modes. The optimizer is also applied to evolving from a tokamak, finding appreciable turbulence reduction for these devices as well. From these studies, improved understanding is obtained of why the deformations found by the optimizer are beneficial, and these deformations are related to earlier theoretical work in both stellarators and tokamaks.
H.E. Mynick, N. Pomphrey and P. Xanthopoulos
Ionization detector, electrode configuration and single polarity charge detection method
An ionization detector, an electrode configuration and a single polarity charge detection method each utilize a boundary electrode which symmetrically surrounds first and second central interlaced and symmetrical electrodes. All of the electrodes are held at a voltage potential of a first polarity type. The first central electrode is held at a higher potential than the second central or boundary electrodes. By forming the first and second central electrodes in a substantially interlaced and symmetrical pattern and forming the boundary electrode symmetrically about the first and second central electrodes, signals generated by charge carriers are substantially of equal strength with respect to both of the central electrodes. The only significant difference in measured signal strength occurs when the charge carriers move to within close proximity of the first central electrode and are received at the first central electrode. The measured signals are then subtracted and compared to quantitatively measure the magnitude of the charge.
He, Zhong (Ann Arbor, MI)
An ionization detector, an electrode configuration and a single polarity charge detection method each utilize a boundary electrode which symmetrically surrounds first and second central interlaced and symmetrical electrodes. All of the electrodes are held at a voltage potential of a first polarity type. The first central electrode is held at a higher potential than the second central or boundary electrodes. By forming the first and second central electrodes in a substantially interlaced and symmetrical pattern and forming the boundary electrode symmetrically about the first and second central electrodes, signals generated by charge carriers are substantially of equal strength with respect to both of the central electrodes. The only significant difference in measured signal strength occurs when the charge carriers move to within close proximity of the first central electrode and are received at the first central electrode. The measured signals are then subtracted and compared to quantitatively measure the magnitude of the charge. 10 figs.
He, Z.
Impact of spectral transition zone in reference ENIGMA configuration.
The gas-cooled fast reactor (GFR) is one of six advanced nuclear energy systems being studied under the auspices of the Gen IV International Forum (GIF). In a bilateral International Nuclear Energy Research Initiative (I-NERI) project French and U.S. national laboratories, industry, and universities are collaborating on the development of the GFR. This effort is led by the ANL in the U.S. and the CEA in France. Some of the attractions of the GFR include: (1) Hard spectrum and core breeding ratio, BR {approx} 1. These features allow minimal waste production, improved transmutation capability, optimal and flexible use of natural resources, potentially better economy (because of use of higher power density relative to current thermal gas-cooled systems), and improved non-proliferation (no fertile blanket); (2) Temperature resistant fuel and structure elements that are favorable to tight fission product confinement and system operation at high temperature; (3) High temperature and transparent helium (He) gas coolant that allows a high thermodynamic conversion efficiency, other energy applications (e.g., hydrogen production), and ease of in-service inspection and repair; and (4) Possible direct energy conversion cycle leading to a simpler design, increased conversion efficiency, and lower investment costs. The French strategy for advanced systems includes the development of the GFR and sodium-cooled fast reactor (SFR) to levels that allow industries to be able to make an informed choice of the fast spectrum system that would provide a sustainable nuclear energy generation option for the future. Current planning calls for the construction of a small experimental research and technology development reactor (ETDR) around 2009 (first operation in 2015) at CEA-Cadarache, France. This would be followed by the construction of a GFR industrial prototype, around 2025. In support of the GFR development efforts, a new physics experimental program (called ENIGMA, Experimental Neutron Investigation of Gas-cooled reactor at Masurca) is being planned for Cadarache. This new experiment would provide better understanding of GFR neutronic features and will be the basis for the extension of current neutronics code validation domain (particularly, the ERANOS code system in France) to the analysis of GFRs. Experimental planning and decisions are ongoing for ENIGMA. One of the items that have been evaluated is the feasibility of obtaining different flux spectra in the ENIGMA reference configuration, giving the flexibility of simulating a large series of proposed gas-cooled fast systems with harder or softer spectra. In order to achieve this goal it was proposed to use a spectral transition zone in the center region of the ENIGMA core configuration. Another goal of the study is to evaluate the impact of the graphite cross-sections on the performance characteristics of the MASURCA configurations. The work was supported by ANL, through the residence of one of the authors at CEA-Cadarache in 2005. In this report, the impacts of the transition zone on the core physics parameters of the reference ENIGMA configuration are summarized.
Aliberti, G.; Palmiotti, G.; Taiwo, T. A.; Tommasi, J.
Configuration and technology implications of potential nuclear hydrogen system applications.
Nuclear technologies have important distinctions and potential advantages for large-scale generation of hydrogen for U.S. energy services. Nuclear hydrogen requires no imported fossil fuels, results in lower greenhouse-gas emissions and other pollutants, lends itself to large-scale production, and is sustainable. The technical uncertainties in nuclear hydrogen processes and the reactor technologies needed to enable these processes, as well waste, proliferation, and economic issues must be successfully addressed before nuclear energy can be a major contributor to the nation's energy future. In order to address technical issues in the time frame needed to provide optimized hydrogen production choices, the Nuclear Hydrogen Initiative (NHI) must examine a wide range of new technologies, make the best use of research funding, and make early decisions on which technology options to pursue. For these reasons, it is important that system integration studies be performed to help guide the decisions made in the NHI. In framing the scope of system integration analyses, there is a hierarchy of questions that should be addressed: What hydrogen markets will exist and what are their characteristics? Which markets are most consistent with nuclear hydrogen? What nuclear power and production process configurations are optimal? What requirements are placed on the nuclear hydrogen system? The intent of the NHI system studies is to gain a better understanding of nuclear power's potential role in a hydrogen economy and what hydrogen production technologies show the most promise. This work couples with system studies sponsored by DOE-EE and other agencies that provide a basis for evaluating and selecting future hydrogen production technologies. This assessment includes identifying commercial hydrogen applications and their requirements, comparing the characteristics of nuclear hydrogen systems to those market requirements, evaluating nuclear hydrogen configuration options within a given market, and identifying the key drivers and thresholds for market viability of nuclear hydrogen options.
Conzelmann, G.; Petri, M.; Forsberg, C.; Yildiz, B.; ORNL
In-plane ESR microwave conductivity measurements and electronic band structure studies of the organic superconductor, {beta}'-(BEDT-TTF){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3}.
The electronic structure of the organic superconductor {beta}''-(BEDT-TTF){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3} (BEDT-TTF is bis(ethylenedithio)tetrathiafulvalene) was characterized with the use of electron spin resonance (ESR) spectroscopy and electronic band structure calculations. The room-temperature ESR line width is 24-27 G in the plane of a donor molecule layer (i.e., in the ab-plane) and {approx}32 G along the normal to this plane (i.e., along the c*-direction). The ab-plane anisotropy of the microwave conductivity was extracted for the first time from the ESR Dysonian line shape analysis. The in-plane conductivity varies sinusoidally, is maximal along the interstack direction (b-axis), and is minimal along the donor stack direction (a-axis). The Fermi surfaces of the title compound consist of a 2D hole pocket and a pair of 1D wavy lines. The directions for the in-plane conductivity maximum and minimum are in excellent agreement with the electronic band structure calculated for {beta}''-(BEDT-TTF){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3}, and the origin of the in-plane conductivity anisotropy lies in the one-dimensional part of the Fermi surface. This is the first time that an organic conductor shows Dysonian ESR line shape due to its 2D and strongly metallic nature, yet the 1D character is revealed simultaneously through the in-plane conductivity anisotropy.
Wang, H. H.; VanZile, M. L.; Schlueter, J. A.; Geiser, U.; Kini, A. M.; Sche, P. P.; Koo, H.-J.; Whangbo, M.-H.; Nixon, P. G.; Winter, R. W.; Gard, G. L.; Chemistry; North Carolina State Univ.; Portland State Univ.
Summary Description Federal Acquisition Circular 2005-58 Federal Acquisition Regulation Amendments
Description Description Federal Acquisition Circular 2005-58 Federal Acquisition Regulation Amendments Published in the Federal Register April 18, 2012 Page 23364 ----------------------------------------------------------------------- I. Biobased Procurements FAR Case 2010-004 II. Representation Regarding Export of Sensitive Technology to Iran FAR Case 2010-018 III. Justification and Approval of Sole-Source 8(a) Contracts FAR Case 2009-038 IV. Technical Amendments ----------------------------------------------------------------------------- Item I--Biobased Procurements (FAR Case 2010-004) This final rule amends the FAR to implement changes that require contractors to report the biobased products purchased under service and construction contracts. The Farm Security and Rural Investment Act (7 U.S.C.
Rapid purification of circular DNA by triplex-mediated affinity capture
A single-step capture of a target supercoiled double-stranded DNA molecule is accomplished by forming a local triple-helix among two strands of the supercoiled circular DNA and an oligonucleotide probe. The oligonucleotide is bound to an immobilizing support which facilitates the immobilization and purification of target DNA molecules. Non-target DNA molecules and other contaminating cellular material are easily removed by washing. The triple-helical structure is destabilized by raising the pH, leaving purified target DNA in the supernatant and reusable affinity capture oligonucleotide secured to the immobilizing support.
Ji, Huamin (4817 Sheboygan Ave., Madison, WI 53705); Smith, Lloyd M. (1115 Amherst Dr., Madison, WI 53705)
Efficient Algorithms for the Domination Problems on Interval and Circular-Arc Graphs
Abstract. This paper first presents a unified approach to design efficient algorithms for the weighted domination problem and its three variants, i.e., the weighted independent, connected, and total domination problems, on interval graphs. Given an interval model with endpoints sorted, these algorithms run in time O(n) orO(n log log n) where n is the number of vertices. The results are then extended to solve the same problems on circular-arc graphs in O(n + m) time where m is the number of edges of the input graph.
Maw-shang Chang
Underground-coal-mine lighting handbook. Part 1. Background. Information Circular/1986
This Bureau of Mines report and its companion report (Information Circular 9074) were prepared as a complete reference on underground-coal-mine lighting. The report discusses the fundamentals of light and its interrelationship with the visual process. The purpose of the report is to insure an understanding of the numerous complex and interrelated factors that must be considered to design and implement a mine lighting system that will satisfy human needs for good vision and comfort. Topics include history, objectives, and technical considerations of coal-mine lighting; light physics; light and vision relationships; and disability and discomfort glare.
Lewis, W.H.
Orbits and reversals of a drop rolling inside a horizontal circular hydraulic jump
We explore the complex dynamics of a non-coalescing drop of moderate size inside a circular hydraulic jump of the same liquid formed on a horizontal disk. In this situation the drop is moving along the jump and one observes two different motions: a periodic one (it orbitates at constant speed) and an irregular one involving reversals of the orbital motion. Modeling the drop as a rigid sphere exchanging friction with liquid across a thin film of air, we recover the orbital motion and the internal rotation of the drop. This internal rotation is experimentally observed.
Alexis Duchesne; Cl�ment Savaro; Luc Lebon; Christophe Pirat; Laurent Limat
A single-step capture of a target supercoiled double-stranded DNA molecule is accomplished by forming a local triple-helix among two strands of the supercoiled circular DNA and an oligonucleotide probe. The oligonucleotide is bound to an immobilizing support which facilitates the immobilization and purification of target DNA molecules. Non-target DNA molecules and other contaminating cellular material are easily removed by washing. The triple-helical structure is destabilized by raising the pH, leaving purified target DNA in the supernatant and reusable affinity capture oligonucleotide secured to the immobilizing support. 3 figs.
Ji, H.; Smith, L.M.
Nonlinear dissipation of circularly polarized Alfven waves due to the beam-induced obliquely propagating waves
In the present study, the dissipation processes of circularly polarized Alfven waves in solar wind plasmas including beam components are numerically discussed by using a 2-D hybrid simulation code. Numerical results suggest that the parent Alfven waves are rapidly dissipated due to the presence of the beam-induced obliquely propagating waves, such as kinetic Alfven waves. The nonlinear wave-wave coupling is directly evaluated by using the induction equation for the parent wave. It is also observed both in the 1-D and 2-D simulations that the presence of large amplitude Alfven waves strongly suppresses the beam instabilities.
Nariyuki, Y. [Faculty of Human Development, University of Toyama, 3190, Toyama City, Toyama 930-8555 (Japan); Hada, T. [Department of Earth System Science and Technology, Kyushu University, 6-1, Kasuga City, Fukuoka 816-8580 (Japan); Tsubouchi, K. [Department of Earth and Planetary Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033 (Japan)
Horizon effects for surface waves in wave channels and circular jumps
Surface waves in classical fluids experience a rich array of black/white hole horizon effects. The dispersion relation depends on the characteristics of the fluid (in our case, water and silicon oil) as well as on the fluid depth and the wavelength regime. In some cases, it can be tuned to obtain a relativistic regime plus high-frequency dispersive effects. We discuss two types of ongoing analogue white-hole experiments: deep water waves propagating against a counter-current in a wave channel and shallow waves on a circular hydraulic jump.
Jannes, Gil; Chaline, Jennifer; Ma�ssa, Philippe; Mathis, Christian; Rousseaux, Germain
Configuration Data Management (CDM) on a Shoestring Identifying and Utilizing an Existing Configuration and Data Management Infrastructure
The spreading need for and use of configuration and data management (CDM) standards has highlighted a number of challenges to the companies that need to implement those standards. For companies and organizations that are new to CDM or have limited CDM capabilities, one of the major dilemmas faced is identifying how and where to start. In many cases there is a need to contend with a legacy of poorly identified items and information and an immature or non-existent CDM infrastructure (processes, procedures, people, and information systems). To the company management and CDM professional this poses a seemingly insurmountable task of putting in place a CDM infrastructure that provides the needed benefits while keeping within an acceptable cost and schedule. This paper deals with initially establishing the CDM infrastructure using the tools that a company already has available. The paper identifies features of common software applications that can be used to implement CDM principles.
Apparatus configured for identification of a material and method of identifying a material
The present invention relates to an apparatus configured for identification of a material and method of identifying a material. One embodiment of the present invention provides an apparatus configured for identification of a material including a first region configured to receive a first sample and output a first spectrum responsive to exposure of the first sample to radiation; a signal generator configured to provide a reference signal having a reference frequency and a modulation signal having a modulation frequency; a modulator configured to selectively modulate the first spectrum using the modulation signal according to the reference frequency; a second region configured to receive a second sample and output a second spectrum responsive to exposure of the second sample to the first spectrum; and a detector configured to detect the second spectrum.
Slater, John M. (Idaho Falls, ID); Crawford, Thomas M. (Idaho Falls, ID); Frickey, Dean A. (Idaho Falls, ID)
Validation of DNA probes for molecular cytogenetics by mapping onto immobilized circular DNA
Fluorescence in situ hybridization (FISH) is a sensitive and rapid procedure to detect gene rearrangements in tumor cells using non-isotopically labeled DNA probes. Large insert recombinant DNA clones such as bacterial artificial chromosome (BAC) or P1/PAC clones have established themselves in recent years as preferred starting material for probe preparations due to their low rates of chimerism and ease of use. However, when developing probes for the quantitative analysis of rearrangements involving genomic intervals of less than 100kb, careful probe selection and characterization are of paramount importance. We describe a sensitive approach to quality control probe clones suspected of carrying deletions or for measuring clone overlap with near kilobase resolution. The method takes advantage of the fact that P1/PAC/BAC's can be isolated as circular DNA molecules, stretched out on glass slides and fine-mapped by multicolor hybridization with smaller probe molecules. Two examples demonstrate the application of this technique: mapping of a gene-specific {approx}6kb plasmid onto an unusually small, {approx}55kb circular P1 molecule and the determination of the extent of overlap between P1 molecules homologous to the human NF-?B2 locus. The relatively simple method presented here does not require specialized equipment and may thus find widespread applications in DNA probe preparation and characterization, the assembly of physical maps for model organisms or in studies on gene rearrangements.
Greulich-Bode, Karin; Wang, Mei; Rhein, Andreas; Weier, Jingly; Weier, Heinz-Ulli
Iterative circular coinduction for CoCasl in Isabelle/HOL
Coalgebra has in recent years been recognized as the framework of choice for the treatment of reactive systems at an appropriate level of generality. Proofs about the reactive behavior of a coalgebraic system typically rely on the method of coinduction. In comparison to �traditional � coinduction, which has the disadvantage of requiring the invention of a bisimulation relation, the method of circular coinduction allows a higher degree of automation. As part of an effort to provide proof support for the algebraic-coalgebraic specification language CoCasl, we develop a new coinductive proof strategy which iteratively constructs a bisimulation relation, thus arriving at a new variant of circular coinduction. Based on this result, we design and implement tactics for the theorem prover Isabelle which allow for both automatic and semiautomatic coinductive proofs. The flexibility of this approach is demonstrated by means of examples of (semi-)automatic proofs of consequences of Co-Casl specifications, automatically translated into Isabelle theories by means of the Bremen heterogeneous Casl tool set Hets.
Daniel Hausmann; Till Mossakowski; Lutz Schr�der
Modeling the horizon-absorbed gravitational flux for equatorial-circular orbits in Kerr spacetime
We propose an improved analytical model for the horizon-absorbed gravitational-wave energy flux of a small body in circular orbit in the equatorial plane of a Kerr black hole. Post-Newtonian (PN) theory provides an analytical description of the multipolar components of the absorption flux through Taylor expansions in the orbital frequency. Building on previous work, we construct a mode-by-mode factorization of the absorbed flux whose Taylor expansion agrees with current PN results. This factorized form significantly improves the agreement with numerical results obtained with a frequency-domain Teukolsky code, which evolves through a sequence of circular orbits up to the photon orbit. We perform the comparison between model and numerical data for dimensionless Kerr spins $-0.99 \\leq q \\leq 0.99$ and for frequencies up to the light ring of the Kerr black hole. Our proposed model enforces the presence of a zero in the flux at an orbital frequency equal to the frequency of the horizon, as predicted by perturbation theory. It also reproduces the expected divergence of the flux close to the light ring. Neither of these features are captured by the Taylor-expanded PN flux. Our proposed absorption flux can also help improve models for the inspiral, merger, ringdown of small mass-ratio binary systems.
Andrea Taracchini; Alessandra Buonanno; Scott A. Hughes; Gaurav Khanna
Touring DNS Open Houses for Trends and Configurations
DNS is a critical component of the Internet. It maps domain names to IP addresses and serves as a distributed database for various other applications, including mail, Web, and spam filtering. This paper examines DNS zones in the Internet for diversity, adoption rates of new technologies, and prevalence of configuration issues. To gather data, we sweep 60% of the Internet's domains in June - August 2007 for zone transfers. 6.6% of them allow us to transfer their complete information. Surprisingly, this includes a large fraction of the domains deploying DNSSEC. We find that DNS zones vary significantly in size and some span many ASes. Also, while anti-spam technologies appear to be getting deployed, the adoption rates of DNSSEC and IPv6 continue to be low. Finally, we also find that carelessness in handing DNS records can lead to reduced availability of name servers, email, and Web servers. This also undermines anti-spam efforts and the efforts to shut down phishing sites or to contain malware infections.
Kalafut, Prof. Andrew [Grand Valley State University (GVSU), Michigan; Shue, Craig A [ORNL; Gupta, Prof. Minaxi [Indiana University
Stationary Nonaxisymmetric Configurations of Magnetized Singular Isothermal Disks
Accepted.... Received...; in original form... We construct both aligned and unaligned (logarithmic spiral) stationary configurations of nonaxisymmetric magnetohydrodynamic (MHD) disks from either a full or a partial razor-thin power-law axisymmetric magnetized singular isothermal disk (MSID) that is embedded with a coplanar azimuthal magnetic field B? of a non-force-free radial scaling r?1/2 and that rotates differentially with a flat rotation curve of speed aD, where a is the isothermal sound speed and D is the dimensionless rotation parameter. Analytical solutions and stability criteria for determining D2 are derived. For aligned nonaxisymmetric MSIDs, eccentric m = 1 displacements may occur at arbitrary D2 in a full MSID but are allowed only with a2D2 = C2 A /2 in a partial MSID (CA is the Alfv�n speed), while each case of |m | ? 1 gives two possible values of D2 for purely azimuthal propagations of fast and slow MHD density waves (FMDWs and SMDWs) that appear stationary in an inertial frame of reference. For disk galaxies modeled by a partial MSID resulting from a massive dark-matter halo with a flat rotation curve and a2D2 ? C2 A, stationary aligned perturbations of m = 1 are not allowed. For
Yu-qing Lou
Configuration and performance of fuel cell-combined cycle options
The natural gas, indirect-fired, carbonate fuel-cell-bottomed, combined cycle (NG-IFCFC) and the topping natural-gas/solid-oxide fuel-cell combined cycle (NG-SOFCCC) are introduced as novel power-plant systems for the distributed power and on-site markets in the 20-200 mega-watt (MW) size range. The novel NG-IFCFC power-plant system configures the ambient pressure molten-carbonate fuel cell (MCFC) with a gas turbine, air compressor, combustor, and ceramic heat exchanger: The topping solid-oxide fuel-cell (SOFC) combined cycle is not new. The purpose of combining a gas turbine with a fuel cell was to inject pressurized air into a high-pressure fuel cell and to reduce the size, and thereby, to reduce the cost of the fuel cell. Today, the SOFC remains pressurized, but excess chemical energy is combusted and the thermal energy is utilized by the Carnot cycle heat engine to complete the system. ASPEN performance results indicate efficiencies and heat rates for the NG-IFCFC or NG-SOFCCC are better than conventional fuel cell or gas turbine steam-bottomed cycles, but with smaller and less expensive components. Fuel cell and gas turbine systems should not be viewed as competitors, but as an opportunity to expand to markets where neither gas turbines nor fuel cells alone would be commercially viable. Non-attainment areas are the most likely markets.
Rath, L.K.; Le, P.H.; Sudhoff, F.A.
Computer software configuration management plan for the 241-AY and 241-AZ tank farm MICON automation system
Software configuration items pertaining to the process control systems, of the ventilation systems of the tank farms, are identified and configuration controls are defined.
Teats, M.C.
T-562: Novell ZENworks Configuration Management novell-tftp.exe Buffer
2: Novell ZENworks Configuration Management novell-tftp.exe 2: Novell ZENworks Configuration Management novell-tftp.exe Buffer Overflow T-562: Novell ZENworks Configuration Management novell-tftp.exe Buffer Overflow February 22, 2011 - 7:00am Addthis PROBLEM: Novell ZENworks Buffer Overflow in TFTPD. PLATFORM: Novell ZENworks Configuration Management 10.x, Novell ZENworks Configuration Management 11.x ABSTRACT: A vulnerability has been reported in Novell ZENworks Configuration Management, which can be exploited by malicious people to compromise a vulnerable system. The vulnerability is caused due to a boundary error in novell-tftp.exe when parsing requests. This can be exploited to cause a heap-based buffer overflow via a specially crafted request sent to UDP port 69. The vulnerability is reported in versions 10.3.1, 10.3.2, and 11.0.
A Framework for the Treatment of External Events in Configuration Risk Management: 2004 Configuration of Risk Management Forum Resea rch Task
To comply with paragraph (a)(4) of the Maintenance Rule (10 CFR 50.65), U.S. nuclear plants consider the potential impacts of external events as part of the overall requirement to assess configuration-specific risk. This report, one result of efforts to develop practical, cost-effective tools to support this process, presents an overall framework for consideration of external events in configuration risk management (CRM).
Paramagnetic spin-up of a field reversed configuration with rotating magnetic field current drive.
??A transverse Rotating Magnetic Field (RMF) can drive toroidal current and sustain the poloidal flux of a Field Reversed Configuration (FRC) through the application of� (more)
Peter, Andrew Maxwell
A New Approach to Abstract Machines - Introduction to the Theory of Configuration Machines
An abstract machine is a theoretical model designed to perform a rigorous study of computation. Such a model usually consists of configurations, instructions, programs, inputs and outputs for the machine. In this paper we formalize these notions as a very simple algebraic system, called a configuration machine. If an abstract machine is defined as a configuration machine consisting of primitive recursive functions then the functions computed by the machine are always recursive. The theory of configuration machines provides a useful tool to study universal machines.
Luo, Zhaohua
Survey on the Use of Configuration Risk and Safety Management Tools at Nuclear Power Plants
A joint project of Electricite de France (EDF) and EPRI, this project analyzed use of configuration safety and risk management tools at nuclear power plants.
Study on Performance Characteristics of Interior Permanent Magnet Synchronous Motor Due to Rotor Configuration.
??This research study was conducted in an effort to understand what effects the rotor configuration has on the performance of a permanent magnet synchronous machine,� (more)
Kettlewell, James
Battery cell configuration for organic light emitting diode display in modern smartphones and tablet-PCs
Battery cell configuration for organic light emitting diode display in modern smartphones- spite of power efficiency of organic light emitting diode (OLED) display nature, the integrated display
Pedram, Massoud
CMS 3.1 Configuration Management Implementation, 10/13/98
Energy.gov (U.S. Department of Energy (DOE))
The objective of this surveillance is to verify implementation of configuration management requirements.� These surveillance activities provide a basis for evaluating the effectiveness of the...
U-024: IBM Lotus Sametime Configuration Servlet Lets Remote Users Obtain
024: IBM Lotus Sametime Configuration Servlet Lets Remote Users 024: IBM Lotus Sametime Configuration Servlet Lets Remote Users Obtain Configuration Data U-024: IBM Lotus Sametime Configuration Servlet Lets Remote Users Obtain Configuration Data November 1, 2011 - 8:15am Addthis PROBLEM: IBM Lotus Sametime Configuration Servlet Lets Remote Users Obtain Configuration Data. PLATFORM: All Sametime Platforms : 7.0, 7.5, 7.5.1, 184.108.40.206, 18.104.22.168, 8.0, 8.0.1, 8.0.2, 8.5, 8.5.1, 188.8.131.52, 8.5.2 ABSTRACT: A remote user can obtain configuration information. reference lINKS: IBM Sametime Security Bulletin SecurityTracker Alert ID: 1026255 CVE-2011-1370 IMPACT ASSESSMENT: Medium Discussion: The Sametime server contains a configuration servlet that is accessed by several Sametime server processes. By default, this servlet does not require authentication, which could potentially allow an unauthorized user
Office of Scientific and Technical Information (OSTI)
ANL-85-51 ANL-85-51 ANL-85-51 ANL-85-51 FLOW-INDUCED VIBRATION OF CIRCULAR CYLINDRICAL STRUCTURES by ShoeiSheng Chen BASE TECHNOLOGY ARGONNE NATIONAL LABORATORY, ARGONNE, ILLINOIS Operated by THE UNIVERSITY OF CHICAGO for the U. S. DEPARTMENT OF ENERGY under Contract W-31-109-Eng-38 A major purpose of the Techni- cal information Center is to provide the broadest dissemination possi- ble of information contained in DOE's Research and Development Reports to business, industry, the academic community, and federal, state and local governments. Although a small portion of this report is not reproducible, it is being made available to expedite the availability of information on the research discussed herein. Distribution Category: LMFBR-Components: Base Technology (UC-79k) ANL-85-51 ANL-85-51
THE MILKY WAY'S CIRCULAR-VELOCITY CURVE BETWEEN 4 AND 14 kpc FROM APOGEE DATA
We measure the Milky Way's rotation curve over the Galactocentric range 4 kpc {approx}data from the Apache Point Observatory Galactic Evolution Experiment. We model the line-of-sight velocities of 3365 stars in 14 fields with b = 0 Degree-Sign between 30 Degree-Sign {99 % confidence. We find an offset between the Sun's rotational velocity and the local circular velocity of 26 {+-} 3 km s{sup -1}, which is larger than the locally measured solar motion of 12 km s{sup -1}. This larger offset reconciles our value for V{sub c} with recent claims that V{sub c} {approx}> 240 km s{sup -1}. Combining our results with other data, we find that the Milky Way's dark-halo mass within the virial radius is {approx}8 Multiplication-Sign 10{sup 11} M {sub Sun }.
Bovy, Jo [Institute for Advanced Study, Einstein Drive, Princeton, NJ 08540 (United States); Allende Prieto, Carlos; Meszaros, Szabolcs [Instituto de Astrofisica de Canarias (IAC), E-38200 La Laguna, Tenerife (Spain); Beers, Timothy C. [National Optical Astronomy Observatory, Tucson, AZ 85719 (United States); Bizyaev, Dmitry; Ebelke, Garrett L.; Malanushenko, Elena; Malanushenko, Viktor [Apache Point Observatory, P.O. Box 59, Sunspot, NM 88349 (United States); Da Costa, Luiz N.; Girardi, Leo; Maia, Marcio A. G. [Laboratorio Interinstitucional de e-Astronomia-LIneA, Rua Gal. Jose Cristino 77, Rio de Janeiro, RJ 20921-400 (Brazil); Cunha, Katia [Observatorio Nacional, Rio de Janeiro, RJ 20921-400 (Brazil); Eisenstein, Daniel J. [Harvard-Smithsonian Center for Astrophysics, 60 Garden St., MS 20, Cambridge, MA 02138 (United States); Frinchaboy, Peter M. [Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129 (United States); Garcia Perez, Ana Elia; Hearty, Fred R.; Majewski, Steven R.; Nidever, David L. [Department of Astronomy, University of Virginia, Charlottesville, VA 22904 (United States); Hogg, David W. [Center for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, NY 10003 (United States); Holtzman, Jon, E-mail: firstname.lastname@example.com [Department of Astronomy, New Mexico State University, Las Cruces, NM 88003 (United States); and others
Ionization of oriented carbonyl sulfide molecules by intense circularly polarized laser pulses
We present combined experimental and theoretical results on strong-field ionization of oriented carbonyl sulfide molecules by circularly polarized laser pulses. The obtained molecular frame photoelectron angular distributions show pronounced asymmetries perpendicular to the direction of the molecular electric dipole moment. These findings are explained by a tunneling model invoking the laser-induced Stark shifts associated with the dipoles and polarizabilities of the molecule and its unrelaxed cation. The focus of the present article is to understand the strong-field ionization of one-dimensionally-oriented polar molecules, in particular asymmetries in the emission direction of the photoelectrons. In the following article [Phys. Rev. A 83, 023406 (2011)] the focus is to understand strong-field ionization from three-dimensionally-oriented asymmetric top molecules, in particular the suppression of electron emission in nodal planes of molecular orbitals.
Dimitrovski, Darko; Abu-samha, Mahmoud; Madsen, Lars Bojer; Filsinger, Frank; Meijer, Gerard; Kuepper, Jochen [Lundbeck Foundation Theoretical Center for Quantum System Research, Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark); Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin (Germany); Holmegaard, Lotte; Kalhoej, Line [Department of Chemistry, Aarhus University, DK-8000 Aarhus C (Denmark); Nielsen, Jens H. [Department of Physics, Aarhus University, DK-8000 Aarhus C (Denmark); Stapelfeldt, Henrik [Department of Chemistry, Aarhus University, DK-8000 Aarhus C (Denmark); Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C (Denmark)
Domain Engineered Configuration Control Mark Ardis, Peter Dudak, Liz Dor, Wen-jenq Leu, Lloyd Nakatani, Bob Olsen,
, application engineering, domain specific language, configuration control, FAST, InfoWiz, VFSM, Tcl/Tk Abstract
Ardis, Mark
Forced convection heat transfer in the transition region between laminar and turbulent flow for a vertical circular tube
In this study, first results of the heat transfer characteristic of a vertical double tube heat exchanger were determined. The heat exchanger was operated under cocurrent-flow conditions. The Reynolds-number was varied in the transition region between ... Keywords: circular tube, forced convection, heat transfer, transition region
D. Huber; H. Walter
Configuration et CSP avec variables `a existence conditionnee Thomas van Oudenhove
Configuration et CSP avec variables `a existence conditionn´ee Thomas van Oudenhove Directeurs de contraintes, par le biais des CSP, ´etait une approche adapt´ee `a cette probl´ematique. Cependant, le concept ces approches. Mots-cl´es configuration de produit -- contraintes -- CSP -- r´esolution -- filtrage 1
Method of creating a controlled interior surface configuration of passages within a substrate
A method of creating a controlled interior surface configuration of passages within a substrate, particularly cooling passages of nozzles or buckets of a gas turbine, involves the hot isostatic pressing of a leachable passage insert whose surface carries the female image of the desired interior surface configuration inside the substrate followed by leaching of the insert from the substrate.
Dembowski, Peter V. (Richmond Heights, OH); Schilke, Peter W. (Scotia, NY)
A behaviour-based control architecture for heterogeneous modular, multi-configurable, chained micro-robots
This article presents a new control architecture designed for heterogeneous modular, multi-configurable, chained micro-robots. This architecture attempts to fill the gap that exists in heterogeneous modular robotics research, in which little work has ... Keywords: Architecture, Behaviour-based, Control, Heterogeneous, Modular, Multi-configurable
A. Brunete; M. Hernando; E. Gambao; J. E. Torres
Interactive visualisation of products in online configurators: a case study for variability modelling technologies
Numerous companies develop interactive environments to assist users in customising sales products through the selection of configuration options. A visual representation of these products is an important factor in terms of user experience. However, an ... Keywords: configurator, software product line, user interface, variability modelling
Marianela Ciolfi Felice, Joao Bosco Ferreira Filho, Mathieu Acher, Arnaud Blouin, Olivier Barais
Configuration and Evaluation of the WRF Model for the Study of Hawaiian Regional Climate
The Weather Research and Forecasting (WRF) model V3.3 has been configured for the Hawaiian Islands as a regional climate model for the region (HRCM). This paper documents the model configuration and presents a preliminary evaluation based on a ...
Chunxi Zhang; Yuqing Wang; Axel Lauer; Kevin Hamilton
Supporting configurability in a mixed-media environment for design students
In many environments, the landscape of space and artefacts is evolving and changing with the tasks at hand. Integrating digital media and computation in these environments has to take into account the fact that people will configure space functions and ... Keywords: Boundary objects, Configurability, Mixed media environments, Mixed objects, Physical interfaces
Thomas Binder; Giorgio De Michelis; Michael Gervautz; Giulio Jacucci; Kresimir Matkovic; Thomas Psik; Ina Wagner
TIPSTER Text Phase II Configuration Management Plan Version1.2p 3June1996
for TIPSTER Configuration Management Phase I of the TIPSTER Text Program, including the Text Retrieval be reused in many applications on many platforms, is the purpose of the TIPSTER Text Phase II Program/CM configuration organizations for TIPSTER II. It also describes the CM roles and responsibilities of other program
Impact of software engineering research on the practice of software configuration management
Software Configuration Management (SCM) is an important discipline in professional software development and maintenance. The importance of SCM has increased as programs have become larger, more long lasting, and more mission and life critical. This article ... Keywords: Versioning, data model, process support, research impact, software configuration management, software engineering, workspace management
Jacky Estublier; David Leblang; Andr� van der Hoek; Reidar Conradi; Geoffrey Clemm; Walter Tichy; Darcy Wiborg-Weber
Networking without Dynamic Host Configuration Protocol server in Ethernet and Wireless Local Area Network
A Dynamic Host Configuration Protocol (DHCP) server is a well-known server deployed at a network to manage Internet Protocol (IP) addresses temporarily rentable to hosts in the network. Besides, a DHCP server provides hosts with important network information ... Keywords: AHCM, ARP, Autoconfiguration, Automatic host configuration, DHCP, Free IP address
Tzu-Chi Huang; Kuo-Chih Chu
A cost-based analysis of intrusion detection system configuration under active or passive response
This paper studies the joint decisions of IDS configuration and alarm investigation capacity under active and passive responses. In active response, alarm events are blocked immediately, whereas alarm events are allowed to access the information assets ... Keywords: IDS configuration, Information security, Intrusion response, Investigation capacity
Wei T. Yue; Metin �akany?ld?r?m
Affine crystal structure on rigged configurations of type $D_{n}^{(1)}$
Extending the work in Schilling (Int. Math. Res. Not. 2006:97376, 2006), we introduce the affine crystal action on rigged configurations which is isomorphic to the Kirillov---Reshetikhin crystal B r,s of type Keywords: Crystal bases, Quantum algebras, Rigged configurations
Masato Okado; Reiho Sakamoto; Anne Schilling
OMB Circular A-119 Federal Participation in the Development and Use of Voluntary Consensus Standards and in Conformity Assessment Activities; Notice
8545 8545 Thursday February 19, 1998 Part IV Executive Office of the President Office of Management and Budget OMB Circular A-119; Federal Participation in the Development and Use of Voluntary Consensus Standards and in Conformity Assessment Activities; Notice 8546 Federal Register / Vol. 63, No. 33 / Thursday, February 19, 1998 / Notices EXECUTIVE OFFICE OF THE PRESIDENT Office of Management and Budget OMB Circular A-119; Federal Participation in the Development and Use of Voluntary Consensus Standards and in Conformity Assessment Activities AGENCY: Office of Management and Budget, EOP. ACTION: Final Revision of Circular A- 119. SUMMARY: The Office of Management and Budget (OMB) has revised Circular A-119 on federal use and development of voluntary standards. OMB has revised this Circular in order to make
V-120: EMC Smarts Network Configuration Manager Java RMI Access Control
0: EMC Smarts Network Configuration Manager Java RMI Access 0: EMC Smarts Network Configuration Manager Java RMI Access Control Flaw Lets Remote Users Gain Full Control V-120: EMC Smarts Network Configuration Manager Java RMI Access Control Flaw Lets Remote Users Gain Full Control March 27, 2013 - 12:51am Addthis PROBLEM: EMC Smarts Network Configuration Manager Java RMI Access Control Flaw Lets Remote Users Gain Full Control PLATFORM: Version(s): prior to 9.2 ABSTRACT: Two vulnerabilities were reported in EMC Smarts Network Configuration Manager. REFERENCE LINKS: SecurityTracker Alert ID: 1028342 www.emc.com CVE-2013-0935 IMPACT ASSESSMENT: Medium DISCUSSION: A remote user can access some Java Remote Method Invocation methods without authenticating to gain control of the target system. A user can exploit unspecified flaws in the NCM System Management
Los Alamos hybrid environment: an integrated development/configuration management system
I present the details of a hybrid configuration management system that utilizes a commercial configuration management tool (Softool's Change and Configuration Control environment) to monitor and control the development of mission-critical software systems at the Los Alamos Weapons Neutron Research Facility. The hybrid system combines features of the VMS host operating system and elements of the tool environment to integrate a flexible development environment with a very powerful automated configuration management system. The features of this system are presented with particular emphasis on the benefits of the hybrid approach. The complementary nature of the constituent environments is described. Special attention is given the issues of operational tradeoffs, personnel interaction and utilization, management visibility and overall system performance. It is shown that by employing a special interface data structure, the hybrid environment supports a much higher level of automation (of both development and configuration management activities) than is realizable in either environment individually. Examples are provided to illustrate the extent to which development activities and all phases of configuration management can be automated under this system. It is shown that in the process of providing a rigorous configuration management environment, the system remains virtually transparent to software development personnel and actually enhances the programmer's capabilities.
Cort, G.
The elusive Innermost Stable Circular Orbit: Now you see it, now you don't
I study the behaviour of the maximum rms fractional amplitude, $r_{\\rm max}$ and the maximum coherence, $Q_{\\rm max}$, of the kilohertz quasi-periodic oscillations (kHz QPOs) in a dozen low-mass X-ray binaries. I find that: (i) The maximum rms amplitudes of the lower and the upper kHz QPO, $r^{\\ell}_{\\rm max}$ and $r^{\\rm u}_{\\rm max}$, respectively, decrease more or less exponentially with increasing luminosity of the source; (ii) the maximum coherence of the lower kHz QPO, $Q^{\\ell}_{\\rm max}$, first increases and then decreases exponentially with luminosity; (iii) the maximum coherence of the upper kHz QPO, $Q^{\\rm u}_{\\rm max}$, is more or less independent of luminosity; and (iv) $r_{\\rm max}$ and $Q_{\\rm max}$ show the opposite behaviour with hardness of the source, consistent with the fact that there is a general anticorrelation between luminosity and spectral hardness in these sources. Both $r_{\\rm max}$ and $Q_{\\rm max}$ in the sample of sources, and the rms amplitude and coherence of the kHz QPOs in individual sources show a similar behaviour with hardness. This similarity argues against the interpretation that the drop of coherence and rms amplitude of the lower kHz QPO at high QPO frequencies in individual sources is a signature of the innermost stable circular orbit around a neutron star.
Mariano Mendez
Failure characterization of a fiber-reinforced ceramic-matrix composite with circular holes. Master's thesis
The purpose of this study was to investigate the performance of a fiber reinforced ceramic matrix composite with circular holes. The specific objectives were to (1) determine the relationship between tensile failure stress and the ratio of hole diameter to specimen width, and (2) to examine the initiation and progression of damage. The ceramic matrix composite used was SiC/1723, composed of continuous silicon titanium carbide fibers in an aluminosilicate glass ceramic matrix. Uniaxial tensile tests were performed at room temperature on two different layups; unidirectional (0)8, and (0/90)2S symmetric. Each layup was tested at three diameter-to-width ratios. Damage data were gathered using acoustic emission, strain gauges, replication techniques, and ultrasound (C-scan). Specimens were also sectioned after damage and examined. Strain data from the region of the hole provided the best indication of initial damage in the (0)8 layup. Acoustic emission techniques accurately indicated the point of initial damage in the (0/90)2S layup. The Whitney-Nuismer failure theory for notched composites was adapted to allow for specimens of varying widths, and was found to fit the experimental data well.
Bullock, D.E.
Computational strategy for modeling radio wave propagation in lossy circular waveguides
The propagation of radio waves in lossy waveguides and tunnels has been researched extensively for many years as can be seen in the detailed book by Wait. The mathematics used to model waveguides for communications is essentially the same as that needed to model radio frequency (RF) propagation in simple tunnels. The presence or lack of conductors inside a waveguide or tunnel is a key driver in the nature of the solutions one will find for a particular application, Delogne. When there are conductors passing through a waveguide or tunnel, the simplest modes of propagation are surface-guided waves following the conductor and typically enabling long-range transmission. A tunnel containing a core conductor can act rather like a coaxial cable, propagating waves at a nearly constant speed, regardless of frequency. Conversely, a tunnel or waveguide without internal conductors is subject to very different wave patterns, resulting in a much more complex propagation analysis. Holloway et al. presented an exhaustive study of RF propagation in circular structures embedded in lossy surroundings. The work of Holloway et al. is the basis for this paper, where we discuss application of their computational techniques and present refinements gleaned from our work on similar problems.
Moses, Ronald [Los Alamos National Laboratory; Cai, D Michael [Los Alamos National Laboratory
Configuration Management Assessment Plan - Developed By NNSA/Nevada Site Office Independent Oversight Division
Configuration Management Configuration Management Assessment Plan NNSA/Nevada Site Office Independent Oversight Division Performance Objective: The objective of this assessment is to determine whether a Configuration Management Program (CM) is in place which allows for the availability and retrievability of accurate information, improves response to design and operational decisions, enhances worker safety, increases facility safety and reliability, increases efficiency of work efforts, and helps maintain integrity of interfacing orders. Criteria: The CM program supports DOE program implementation through the following: It provides the mechanisms for identifying, cataloging, and maintaining the design requirements and design basis (established to satisfy DOE O 420.1 Facility Safety).
QCDOC - Gauge field configurations/Lattice Archives at Brookhaven National Laboratory (BNL)
While many of the QCD lattice configurations developed by the various DOE groups working in this arena may be stored in the Gauge Connection at NERSC (see http://qcd.nersc.gov/), there are still small collections to be found elsewhere. The collection at Brookhaven National Laboratory is one of these, a small collection of configurations generated specifically by the QCDOC Collaboration. There is a small collection of publicly available configurations that can be accessed without registration. Group downloads require registration for a password.
Convective heat transfer in the laminar-turbulent transition region with molten salt in a circular tube
In order to understand the heat transfer characteristics of molten salt and testify the validity of the well-known empirical convective heat transfer correlations, experimental study on transition convective heat transfer with molten salt in a circular tube was conducted. Molten salt circulations were realized and operated in a specially designed system over 1000 h. The average forced convective heat transfer coefficients of molten salt were determined by least-squares method based on the measured data of flow rates and temperatures. Finally, a heat transfer correlation of transition flow with molten salt in a circular tube was obtained and good agreement was observed between the experimental data of molten salt and the well-known correlations presented by Hausen and Gnielinski, respectively. (author)
Yu-ting, Wu; Bin, Liu; Chong-fang, Ma; Hang, Guo [Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education and Key Laboratory of Heat Transfer and Energy Conversion, Beijing municipality, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022 (China)
Low cost fuel cell diffusion layer configured for optimized anode water management
A fuel cell comprises a cathode gas diffusion layer, a cathode catalyst layer, an anode gas diffusion layer, an anode catalyst layer and an electrolyte. The diffusion resistance of the anode gas diffusion layer when operated with anode fuel is higher than the diffusion resistance of the cathode gas diffusion layer. The anode gas diffusion layer may comprise filler particles having in-plane platelet geometries and be made of lower cost materials and manufacturing processes than currently available commercial carbon fiber substrates. The diffusion resistance difference between the anode gas diffusion layer and the cathode gas diffusion layer may allow for passive water balance control.
Owejan, Jon P; Nicotera, Paul D; Mench, Matthew M; Evans, Robert E
Surveillance Guide - CMS 3.3 Verification of System Configuration and Operations
VERIFICATION OF SYSTEM CONFIGURATION AND OPERATIONS VERIFICATION OF SYSTEM CONFIGURATION AND OPERATIONS 1.0 Objective The objective of this surveillance is for the Facility Representative to verify that the facility's configuration and operations are consistent with facility design basis documentation. These surveillance activities provide a basis for evaluating the effectiveness of the contractor's program for implementing design basis requirements and for ensuring compliance with DOE requirements. 2.0 References 2.1 DOE 4700.1, Project Management System 2.2 DOE 5480.19, Conduct of Operations Requirements for DOE Facilities 2.3 DOE 5480.23, Safety Analysis Reports 2.4 DOE-STD-1073-93, Guide for Operational Configuration Management 3.0 Requirements Implemented This surveillance is conducted to implement requirements CM-0009
DOE Order Self Study Modules - DOE STD 1073-2003, Configuration Management
73-2003 73-2003 CONFIGURATION MANAGEMENT DOE -STD-1073-2003 Familiar Level August 2011 1 DOE-STD-1073-2003 CONFIGURATION MANAGEMENT FAMILIAR LEVEL OBJECTIVES Given the familiar level of this module and the resources, you will be able to answer the following questions: 1. What is the purpose of DOE-STD-1073-2003? 2. What are the objectives of configuration management? 3. To what type of DOE facility does DOE-STD-1073-2003 apply? 4. What is the first set of structures, systems, and components (SSCs) that must be included in a configuration management program? 5. What is a work control process? 6. What is the objective of change control? 7. What are three elements that a technical review is designed to verify? 8. What three elements should be included in a design basis review?
Oxygen-Consuming Chlor-Alkali Cell Configured To Minimize Peroxide
Oxygen-Consuming Chlor-Alkali Cell Oxygen-Consuming Chlor-Alkali Cell Oxygen-Consuming Chlor-Alkali Cell Configured To Minimize Peroxide Formation Oxygen-consuming zero gap chlor-alkali cell was configured to minimize peroxide formation. Available for thumbnail of Feynman Center (505) 665-9090 Email Oxygen-Consuming Chlor-Alkali Cell Configured To Minimize Peroxide Formation Oxygen-consuming zero gap chlor-alkali cell was configured to minimize peroxide formation. The cell included an ion-exchange membrane that divided the cell into an anode chamber including an anode and a cathode chamber including an oxygen gas diffusion cathode. The cathode included a single-piece of electrically conducting graphitized carbon cloth. Catalyst and polytetrafluoroethylene were attached to only one side of the cloth.
V-010: 3Com, HP, and H3C Switches SNMP Configuration Lets Remote Users Take
10: 3Com, HP, and H3C Switches SNMP Configuration Lets Remote 10: 3Com, HP, and H3C Switches SNMP Configuration Lets Remote Users Take Administrative Actions V-010: 3Com, HP, and H3C Switches SNMP Configuration Lets Remote Users Take Administrative Actions October 25, 2012 - 6:00am Addthis PROBLEM: 3Com, HP, and H3C Switches SNMP Configuration Lets Remote Users Take Administrative Actions PLATFORM: 3COM, and H3C Routers & Switches Specific products and model numbers is provided in the vendor's advisory. ABSTRACT: A vulnerability was reported in 3Com, HP, and H3C Switches. REFERENCE LINKS: HP Support document ID: c03515685 SecurityTracker Alert ID: 1027694 CVE-2012-3268 IMPACT ASSESSMENT: High DISCUSSION: A remote user with knowledge of the SNMP public community string can access potentially sensitive data (e.g., user names, passwords) in the
Saltwell PIC Skid Programmable Logic Controller (PLC) Software Configuration Management Plan
This document provides the procedures and guidelines necessary for computer software configuration management activities during the operation and maintenance phases of the Saltwell PIC Skids as required by LMH-PRO-309, Rev. 0, Computer Software Quality Assurance, Section 2.6, Software Configuration Management. The software configuration management plan (SCMP) integrates technical and administrative controls to establish and maintain technical consistency among requirements, physical configuration, and documentation for the Saltwell PIC Skid Programmable Logic Controller (PLC) software during the Hanford application, operations and maintenance. This SCMP establishes the Saltwell PIC Skid PLC Software Baseline, status changes to that baseline, and ensures that software meets design and operational requirements and is tested in accordance with their design basis.
An Updated Climatology of the Troposphere�Stratosphere Configuration of the Met Office's Unified Model
In this paper results are presented from an improved version of the troposphere�stratosphere configuration of the Met Office Unified Model (UM). The new version incorporates a number of changes, including new radiation and orographic gravity wave ...
D. R. Jackson; J. Austin; N. Butchart
Saltwell Leak Detector Station Programmable Logic Controller (PLC) Software Configuration Management Plan (SCMP)
This document provides the procedures and guidelines necessary for computer software configuration management activities during the operation and maintenance phases of the Saltwell Leak Detector Stations as required by HNF-PRO-309, Rev. 1, Computer Software Quality Assurance, Section 2.4, Software Configuration Management. The software configuration management plan (SCMP) integrates technical and administrative controls to establish and maintain technical consistency among requirements, physical configuration, and documentation for the Saltwell Leak Detector Station Programmable Logic Controller (PLC) software during the Hanford application, operations and maintenance. This SCMP establishes the Saltwell Leak Detector Station PLC Software Baseline, status changes to that baseline, and ensures that software meets design and operational requirements and is tested in accordance with their design basis.
The placement-configuration problem for intrusion detection nodes in wireless sensor networks
The deployment and configuration of a distributed network intrusion detection system (NIDS) in a large Wireless Sensor Network (WSN) is an enormous challenge. A reduced number of devices equipped with detection capabilities have to be placed on strategic ...
Juan E. Tapiador, John A. Clark
Fail-safe source-driven fission and fusion-fission hybrid reactor configurations.
??A source-driven nuclear reactor configuration with a unity infinite medium multiplication factor fission core (1k??), is investigated for both fission and fusion-fission hybrid systems. Suchaconfiguration� (more)
Singh, Monish
Questions and Answers - How do I read an electron configuration table?
How are electrons placed inshells around the nucleus? How are electrons placed in<br>shells around the nucleus? Previous Question (How are electrons placed in shells around the nucleus?) Questions and Answers Main Index Next Question (What holds an electron around the nucleus?) What holds an electronaround the nucleus? How do I read an electron configuration table? Are you making a model of an atom and need to know how to place the electrons around the nucleus? If so, you will need to know how to read an element's electron configuration table. Follow these easy directions to learn how! What is an electron configuration table? An electron configuration table is a type of code that describes how many electrons are in each energy level of an atom and how the electrons are arranged within each energy level. It packs a lot of information into a
Configuration and Setting Management for Protection and Control Devices and Systems
The EPRI roadmap reports forecast that as protection equipment and systems continuously evolve in the more feature-rich and sophisticated direction, management of the configuration and setting is becoming more critical in future. In 2011 EPRI Protection and Control (P&C) survey, configuration and setting management for protection and control systems remain one of the most pressing challenges for member utilities.To handle the growing complexity of today�s P&C asset ...
The EPRI roadmap reports [6] [7] forecast that as protection equipment and systems continuously evolve in the more feature-rich and sophisticated direction, management of the configuration and setting is becoming more critical in future. In 2011 EPRI Protection and Control (P&C) survey, it was confirmed that configuration and setting management for protection and control devices and systems was one of the most pressing challenges from members.To handle the ...
Geometric Matching of 3-D Objects: Assessing the Range of Successful Initial Configurations
Abstract: This paper considers the matching of 3D objects by a geometric approach based on the iterative closest point algorithm (ICP), which, starting from an initial configuration of two rigid objects, iteratively finds their best correspondence. The ... Keywords: 3D object geometric matching, SIC-range, convergence, experimental results, global minimum, image correspondence, image matching, iterative closest point algorithm, local minimum, object recognition, optimum matching, rigid object configuration
Guideline on Configuration Management for Digital Instrumentation and Control Equipment and Systems
Configuration Management (CM) is an integrated management process that addresses the definition and documentation of design requirements, controls changes, and maintains the documentation of the as-built facility configuration throughout the entire life cycle for plant structures, systems, components, software, and hardware. CM methods that address all of these elements are well established for traditional hardware-based instrumentation and control (IC) systems. However, industry experience has indicated...
Disposal configuration options for future uses of greater confinement disposal at the Nevada Test Site
The US Department of Energy (DOE) is responsible for disposing of a variety of radioactive and mixed wastes, some of which are considered special-case waste because they do not currently have a clear disposal option. The DOE`s Nevada Field Office contracted with Sandia National Laboratories to investigate the possibility of disposing of some of this special-case waste at the Nevada Test Site (NTS). As part of this investigation, a review of a near-surface and subsurface disposal options that was performed to develop alternative disposal configurations for special-case waste disposal at the NTS. The criteria for the review included (1) configurations appropriate for disposal at the NTS; (2) configurations for disposal of waste at least 100 ft below the ground surface; (3) configurations for which equipment and technology currently exist; and (4) configurations that meet the special requirements imposed by the nature of special-case waste. Four options for subsurface disposal of special-case waste are proposed: mined consolidated rock, mined alluvium, deep pits or trenches, and deep boreholes. Six different methods for near-surface disposal are also presented: earth-covered tumuli, above-grade concrete structures, trenches, below-grade concrete structures, shallow boreholes, and hydrofracture. Greater confinement disposal (GCD) in boreholes at least 100 ft deep, similar to that currently practiced at the GCD facility at the Area 5 Radioactive Waste Management Site at the NTS, was retained as the option that met the criteria for the review. Four borehole disposal configurations are proposed with engineered barriers that range from the native alluvium to a combination of gravel and concrete. The configurations identified will be used for system analysis that will be performed to determine the disposal configurations and wastes that may be suitable candidates for disposal of special-case wastes at the NTS.
Price, L. [Science Applications International Corp., Albuquerque, NM (United States)
Performance monitoring for new phase dynamic optimization of instruction dispatch cluster configuration
In a processor having multiple clusters which operate in parallel, the number of clusters in use can be varied dynamically. At the start of each program phase, the configuration option for an interval is run to determine the optimal configuration, which is used until the next phase change is detected. The optimum instruction interval is determined by starting with a minimum interval and doubling it until a low stability factor is reached.
Balasubramonian, Rajeev (Sandy, UT); Dwarkadas, Sandhya (Rochester, NY); Albonesi, David (Ithaca, NY)
The existence of asymmetries in the circular polarization (Stokes V) profiles emerging from the solar photosphere has been known since the 1970s. These profiles require the presence of a velocity gradient along the line of sight (LOS), possibly associated with gradients of magnetic field strength, inclination, and/or azimuth. We have focused our study on the Stokes V profiles showing extreme asymmetry in the form of only one lobe. Using Hinode spectropolarimetric measurements, we have performed a statistical study of the properties of these profiles in the quiet Sun. We show their spatial distribution, their main physical properties, how they are related with several physical observables, and their behavior with respect to their position on the solar disk. The single-lobed Stokes V profiles occupy roughly 2% of the solar surface. For the first time, we have observed their temporal evolution and have retrieved the physical conditions of the atmospheres from which they emerged using an inversion code implementing discontinuities of the atmospheric parameters along the LOS. In addition, we use synthetic Stokes profiles from three-dimensional magnetoconvection simulations to complement the results of the inversion. The main features of the synthetic single-lobed profiles are in general agreement with the observed ones, lending support to the magnetic and dynamic topologies inferred from the inversion. The combination of all these different analyses suggests that most of the single-lobed Stokes V profiles are signals coming from the magnetic flux emergence and/or submergence processes taking place in small patches in the photosphere of the quiet Sun.
Sainz Dalda, A. [Stanford-Lockheed Institute for Space Research, Stanford University, HEPL, 466 Via Ortega, Stanford, CA 94305-4085 (United States); Martinez-Sykora, J.; Title, A. [Lockheed Martin Solar and Astrophysics Laboratory, 3176 Porter Dr., Palo Alto, CA 94304 (United States); Bellot Rubio, L., E-mail: email@example.com, E-mail: email@example.com [Instituto de Astrofisica de Andalucia, CSIC, Apdo. 3004, 18080 Granada (Spain)
A robust geometry estimation method for spiral, sequential and circular cone-beam micro-CT
Purpose: The authors propose a novel method for misalignment estimation of micro-CT scanners using an adaptive genetic algorithm. Methods: The proposed algorithm is able to estimate the rotational geometry, the direction vector of table movement and the displacement between different imaging threads of a dual source or even multisource scanner. The calibration procedure does not rely on dedicated calibration phantoms and a sequence scan of a single metal bead is sufficient to geometrically calibrate the whole imaging system for spiral, sequential, and circular scan protocols. Dual source spiral and sequential scan protocols in micro-computed tomography result in projection data that-besides the source and detector positions and orientations-also require a precise knowledge of the table direction vector to be reconstructed properly. If those geometric parameters are not known accurately severe artifacts and a loss in spatial resolution appear in the reconstructed images as long as no geometry calibration is performed. The table direction vector is further required to ensure that consecutive volumes of a sequence scan can be stitched together and to allow the reconstruction of spiral data at all. Results: The algorithm's performance is evaluated using simulations of a micro-CT system with known geometry and misalignment. To assess the quality of the algorithm in a real world scenario the calibration of a micro-CT scanner is performed and several reconstructions with and without geometry estimation are presented. Conclusions: The results indicate that the algorithm successfully estimates all geometry parameters, misalignment artifacts in the reconstructed volumes vanish, and the spatial resolution is increased as can be shown by the evaluation of modulation transfer function measurements.
Sawall, Stefan; Knaup, Michael; Kachelriess, Marc [Institute of Medical Physics (IMP), University of Erlangen-Nuernberg, 91052 Erlangen (Germany); Institute of Medical Physics (IMP), University of Erlangen-Nuernberg, 91052 Erlangen (Germany) and Medical Physics in Radiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg (Germany)
Hydromagnetic Instability in plane Couette Flow
We study the stability of a compressible magnetic plane Couette flow and show that compressibility profoundly alters the stability properties if the magnetic field has a component perpendicular to the direction of flow. The necessary condition of a newly found instability can be satisfied in a wide variety of flows in laboratory and astrophysical conditions. The instability can operate even in a very strong magnetic field which entirely suppresses other MHD instabilities. The growth time of this instability can be rather short and reach $\\sim 10$ shear timescales.
Advanced Intermediate Heat Transport Loop Design Configurations for Hydrogen Production Using High Temperature Nuclear Reactors
The US Department of Energy is investigating the use of high-temperature nuclear reactors to produce hydrogen using either thermochemical cycles or high-temperature electrolysis. Although the hydrogen production processes are in an early stage of development, coupling either of these processes to the high-temperature reactor requires both efficient heat transfer and adequate separation of the facilities to assure that off-normal events in the production facility do not impact the nuclear power plant. An intermediate heat transport loop will be required to separate the operations and safety functions of the nuclear and hydrogen plants. A next generation high-temperature reactor could be envisioned as a single-purpose facility that produces hydrogen or a dual-purpose facility that produces hydrogen and electricity. Early plants, such as the proposed Next Generation Nuclear Plant (NGNP), may be dual-purpose facilities that demonstrate both hydrogen and efficient electrical generation. Later plants could be single-purpose facilities. At this stage of development, both single- and dual-purpose facilities need to be understood. A number of possible configurations for a system that transfers heat between the nuclear reactor and the hydrogen and/or electrical generation plants were identified. These configurations included both direct and indirect cycles for the production of electricity. Both helium and liquid salts were considered as the working fluid in the intermediate heat transport loop. Methods were developed to perform thermal-hydraulic evaluations and cycle-efficiency evaluations of the different configurations and coolants. The thermal-hydraulic evaluations estimated the sizes of various components in the intermediate heat transport loop for the different configurations. The relative sizes of components provide a relative indication of the capital cost associated with the various configurations. Estimates of the overall cycle efficiency of the various configurations were also determined. The evaluations determined which configurations and coolants are the most promising from thermal-hydraulic and efficiency points of view.
Chang Oh; Cliff Davis; Rober Barner; Paul Pickard
The Effect of Thermal Load Configurations on Passive Chilled Beam Performance
This dissertation presents the findings of a study to quantify the effect of heat source configurations on the performance of passive chilled beams. Experiments in a thermally controlled test room were conducted using thermal manikins as heat sources cooled with a 0.6 m by 2.4 m beam. The thermal manikins were arranged in a symmetric and an asymmetric configuration and tested over a range of input power to simulate a low-to-high load heat distribution of an indoor space. A computational fluid dynamics (CFD) model was developed in Star CCM+ v6.06 and used for further analysis of the flow field and to predict additional spatial arrangements of the beam, interior dimensions, and heat source configurations. The CFD model implemented a calculation for the beam cooling capacity to predict the beam performance based on the room thermal conditions. The experimental data revealed an average reduction of 15% in the passive beam cooling capacity for the asymmetrically configured thermal manikins compared to the symmetric arrangement. The CFD model was validated with the experimental data and predicted the asymmetric heat source beam performance reduction to be 17%. The reduction in performance based on the heat source arrangement was found with analysis of the CFD simulations to be a result of the above-beam air velocity field. The unbalanced thermal manikin configuration generated an unbalanced flow condition at the inlet of the beam that resulted in the room air circumventing the inlet of the passive beam, as compared to the inlet velocity field of the symmetric configuration. Additional configurations were investigated with the CFD model to include the beam position, floor area, ceiling height, and thermal manikin arrangements. The simulation results were analyzed by comparing the efficiency of beam performance using the beam cooling capacity calculation for each scenario. The predictions of additional configurations found that the efficiency increased when the beam was perpendicular to a group of heat sources and the changes in beam performance with heat source configurations was not affected by the interior dimensions of the space. However, the resulting thermal conditions in the occupied zone for the beam positions of highest efficiency may negatively impact the thermal comfort of occupants.
Nelson, Ian 1982-
Heat transfer characteristics of circular impinging jet arrays in an annular section with cross flow effects
Jet impingement has been shown to be an effective method for enhancing convective heat transfer. There are a variety of applications of impinging jets in industry, including tempering and shaping of glass, annealing of metal and plastic sheets, cooling of electronic components and drying of paper, veneer, etc. Another application is the use of impinging jets in internal cooling channels in modern gas turbine blades. High velocity jets provide an effective way to augment the rate of heat removal from the blades to the cooling air, maintaining the blade temperatures within tolerable and metallurgical limits. This experimental research examines, for turbulent parallel and counter flows of air through an annular channel with holes for jet impingement along the inner tube, the effects of varying the geometries of the channel and the hole array, and the air flow rate, on the heat transfer distribution on the inner surfaces of the outer tube. Air enters one end of the inner tube, whose other end is closed, passes through the holes on the inner tube and exits through one end of the annular passage between the inner and outer tubes. Each hole array has inline or staggered circular holes with a given diameter and has a fixed number of holes around the circumference of the inner tube at any cross section of the annular channel. Heat transfer experiments are performed for Reynolds numbers of 5,000, 12,250 and 30,000 to determine the distribution of the regionally average Nusselt numbers along the outer tube, as a result of the impinging jets along the inner tube. Pressure measurement experiments give the pressure distributions in the airflows in the inner tube and between the inner and outer tubes. The pressure data is needed to determine the mass flow rates of the impinging jets along the inner tube. The results of the experiments are presented and discussed, the Nusselt numbers for the various cases studied are compared and major findings are reported. The results of this investigation should be particularly useful to engineers in the design of the leading edges of airfoils of modern gas turbine blades.
Mhetras, Shantanu Prakash
Workpiece Configuration
...15° Tool material Carbide Carbide Carbide Chip breaker dimensions Depth, mm (in.) 0.6 (0.025) 0.5 (0.020) 0.6 (0.025) Width, mm (in.) 1.6 ( ) 1.6 ( ) 2.0 ( ) Radius at base, mm (in.) 0.8 ( ) 0.8 ( ) 0.8 ( ) Nose radius, mm (in.) 0.13 (0.005) 0.4 ( ) 0.25�??0.38 (0.010�??0.015) Operating conditions (a)...
Inductrack configuration
A simple permanent-magnet-excited maglev geometry provides levitation forces and is stable against vertical displacements from equilibrium but is unstable against horizontal displacements. An Inductrack system is then used in conjunction with this system to effect stabilization against horizontal displacements and to provide centering forces to overcome centrifugal forces when the vehicle is traversing curved sections of a track or when any other transient horizontal force is present. In some proposed embodiments, the Inductrack track elements are also employed as the stator of a linear induction-motor drive and braking system.
Post, Richard Freeman (Walnut Creek, CA)
V-235: Cisco Mobility Services Engine Configuration Error Lets Remote Users
5: Cisco Mobility Services Engine Configuration Error Lets 5: Cisco Mobility Services Engine Configuration Error Lets Remote Users Login Anonymously V-235: Cisco Mobility Services Engine Configuration Error Lets Remote Users Login Anonymously September 5, 2013 - 12:33am Addthis PROBLEM: A vulnerability was reported in Cisco Mobility Services Engine. A remote user can login anonymously. PLATFORM: Cisco Mobility Services Engine ABSTRACT: A vulnerability in Cisco Mobility Services Engine could allow an unauthenticated, remote attacker to connect to a database replication port anonymously via Secure Sockets Layer (SSL). REFERENCE LINKS: SecurityTracker Alert ID: 1028972 CVE-2013-3469 IMPACT ASSESSMENT: Medium DISCUSSION: The vulnerability is due to the misconfiguration of the Oracle SSL service. An attacker could exploit this vulnerability by connecting to an
Configuring Client PCs for use with Project Assessment and Reporting System(PARS II)
4/2011 4/2011 Page 1 of 4 1 PROCEDURES 1.1 Introduction Most users will be comfortable with contacting their IT Helpdesk for completing the instructions below. However, if you have Admin rights on your workstation, and are comfortable with making configuration changes to it, you may follow these directions yourself. 1.2 Installation of ActiveX Control WINDOWS XP 1. Log onto the workstation to be configured using an ID/Password that can perform administrative functions on that workstation (e.g. Install software, add Active-X controls). Note that administrative access is only required for initial workstation configuration, not ongoing operation of the PARS II application. 2. Check hardware, software and network requirements as identified in section 2 below. Less than
Preliminary Evaluation of a Multiple-Generator Drive-Train Configuration for Wind Turbines: Preprint
The recent trend toward large wind turbines has led to very expensive gearboxes that hinder their feasibility. The gearboxes for these wind turbines are more expensive per kilowatt (kW) of rated power than for smaller turbines because the torque increases more quickly than the power when increasing the rotor diameter. Multiple-generator drivetrain configurations can reduce the drivetrain cost for large wind turbines while increasing the energy capture and reliability. The National Renewable Energy Laboratory (NREL) is reexamining the benefits of multiple-generator configurations through the Wind Partnership for Advanced Component Technology (WindPACT) program. This paper qualitatively compares a multiple-generator drivetrain configuration to a conventional drivetrain.
Cotrell, J.
Operational concepts for the Environmental Restoration and Waste Management Configuration Study
DOE has initiated a planning process in anticipation of upgrading all DOE waste management operations and facilities. The EM Configuration Study examines four areas: (1) planning considerations, (2) system configuration, (3) operational concepts, and (4) resource assessments. Each area is addressed by a different team. Objective of the Operational Concepts Team 3 study is to investigate, identify, define, and evaluate alternative ways to manage DOE waste management facilities, while taking into consideration the information gathered by the other EM Configuration teams. This report provides information and criteria for evaluating the relative effectiveness and efficiency of various organizational alternatives that can be used to operate and manage DOE waste facilities. Intent of this report is not to select one best management alternative but rather to provide recommendations, conclusions, and background information from which decisions will be made at a future date.
Laser systems configured to output a spectrally-consolidated laser beam and related methods
A laser apparatus includes a plurality of pumps each of which is configured to emit a corresponding pump laser beam having a unique peak wavelength. The laser apparatus includes a spectral beam combiner configured to combine the corresponding pump laser beams into a substantially spatially-coherent pump laser beam having a pump spectrum that includes the unique peak wavelengths, and first and second selectively reflective elements spaced from each other to define a lasing cavity including a lasing medium therein. The lasing medium generates a plurality of gain spectra responsive to absorbing the pump laser beam. Each gain spectrum corresponds to a respective one of the unique peak wavelengths of the substantially spatially-coherent pump laser beam and partially overlaps with all other ones of the gain spectra. The reflective elements are configured to promote emission of a laser beam from the lasing medium with a peak wavelength common to each gain spectrum.
Koplow, Jeffrey P. (San Ramon, CA)
Operational concepts and implementation strategies for the design configuration management process.
This report describes operational concepts and implementation strategies for the Design Configuration Management Process (DCMP). It presents a process-based systems engineering model for the successful configuration management of the products generated during the operation of the design organization as a business entity. The DCMP model focuses on Pro/E and associated activities and information. It can serve as the framework for interconnecting all essential aspects of the product design business. A design operation scenario offers a sense of how to do business at a time when DCMP is second nature within the design organization.
Trauth, Sharon Lee
Current-induced switching of magnetic domains to a perpendicular configuration
In a ferromagnet{endash}normal-metal{endash}ferromagnet trilayer, a current flowing perpendicularly to the layers creates a torque on the magnetic moments of the ferromagnets. When one of the contacts is superconducting, the torque not only favors parallel or antiparallel alignment of the magnetic moments, as is the case for two normal contacts, but can also favor a configuration where the two moments are perpendicular. In addition, whereas the conductance for parallel and antiparallel magnetic moments is the same, signalling the absence of giant magnetoresistance in the usual sense, the conductance is greater in the perpendicular configuration. Thus, a negative magnetoconductance is predicted, in contrast with the usual giant magnetoresistance.
Waintal, X.; Brouwer, P. W.
Your Vital Records INTRODUCTION The Federal Emergency Management Agency's Federal Preparedness Circular 65 states "The
Identify and Protect Identify and Protect Your Vital Records INTRODUCTION The Federal Emergency Management Agency's Federal Preparedness Circular 65 states "The protection and ready availability of electronic and hardcopy documents, references, records, and information systems needed to support essential functions under the full spectrum of emergencies is another critical element of a successful COOP plan. Agency personnel must have access to and be able to use these records and systems in conducting their essential functions." Each Federal agency is responsible for establishing a Vital Records Program for the identification and protection of those records needed for Continuity of Operations Plans (COOP) before, during,
Electron holography study of the temperature variation of the magnetic order parameter within circularly chained nickel nanoparticle rings
The magnetic structure within circular chains composed of 30-nm-diameter, polymer-coated nickel particles was studied by electron holography. The magnetic flux closure due to dipolar coupling was confirmed at zero external magnetic field. Its long-range order parameter was determined from the magnitude of the electron phase shift, and it was found to decrease more rapidly than that of bulk nickel as a function of temperature. The results of Monte Carlo simulations indicated that the temperature variation of the order-parameter was explained in terms of weakened dipolar coupling field ascribed to the decay of the bulk magnetization and enhanced thermal fluctuations.
Sugawara, Akira; Fukunaga, Kei-ichi; Scheinfein, M. R.; Kobayashi, H.; Kitagawa, H.; Tonomura, A. [Initial Research Project, Okinawa Institute of Science and Technology (OIST-IRP), c/o Advanced Research Laboratory, Hitachi Ltd. Akanuma 2520, Hatoyama, Saitama 240-0395 (Japan); Simon Fraser University, 8888 University Drive, Burnaby BC V5A 1S6 (Canada); Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581 (Japan); Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581, Japan and JST CREST, Sanbancho 5, Chiyoda-ku, Tokyo 102-0075 (Japan); Initial Research Project, Okinawa Institute of Science and Technology (OIST-IRP), c/o Advanced Research Laboratory, Hitachi Ltd. Akanuma 2520, Hatoyama, Saitama 240-0395 (Japan) and Advanced Research Laboratory, Hitachi Ltd., Akanuma 2520, Hatoyama, Saitama 240-0395 (Japan)
Remediation of Cr(VI) by biogenic magnetic nanoparticles: An x-ray magnetic circular dichroism study
Biologically synthesized magnetite (Fe{sub 3}O{sub 4}) nanoparticles are studied using x-ray absorption and x-ray magnetic circular dichroism following exposure to hexavalent Cr solution. By examining their magnetic state, Cr cations are shown to exist in trivalent form on octahedral sites within the magnetite spinel surface. The possibility of reducing toxic Cr(VI) into a stable, non-toxic form, such as a Cr{sup 3+}-spinel layer, makes biogenic magnetite nanoparticles an attractive candidate for Cr remediation.
Telling, N. D.; Coker, V. S.; Cutting, R. S.; van der Laan, G.; Pearce, C. I.; Pattrick, R. A. D.; Arenholz, E.; Lloyd, J. R.
Acceleration of electrons by a circularly polarized laser pulse in the presence of an intense axial magnetic field in vacuum
Acceleration of electrons by a circularly polarized laser pulse in the presence of a short duration intense axial magnetic field has been studied. Resonance occurs between the electrons and the laser field for an optimum magnetic field leading to effective energy transfer from laser to electrons. The value of optimum magnetic field is independent of the laser intensity and decreases with initial electron energy. The electrons rotate around the axis of the laser pulse with small angle of emittance and small energy spread. Acceleration gradient increases with laser intensity and decreases with initial electron energy.
Singh, K. P. [Computational Plasma Dynamics Laboratory, Kettering University, Flint, Michigan 48504 (United States)
An Observation of a Circular Motion using Ordinary Appliances: Train Toy, Digital Camera, and Android based Smartphone
Using a digital camera (Sony DSC-S75) in its video mode and a smartphone (Samsung GT-N700) equipped with an acceleration sensor, observation of a uniform circular motion of a toy train (Thomas & Friends, Player World, CCF No. 2277-13) is conducted. From the first observation average centripetal acceleration about 0.154 m/s2 is obtained, while the second gives 0.350 m/s2 of average centripetal acceleration by assuming ideal condition, where measured accelerations in z direction is not interpreted.
Viridi, Sparisoma; Nasri, Meldawati
September 24-25, 2003 HAPL meeting, UW, Madison 1 Armor Configuration & Thermal Analysis
September 24-25, 2003 HAPL meeting, UW, Madison 1 Armor Configuration & Thermal Analysis 1. Parametric analysis in support of system studies 2. Preliminary scoping analysis of the use of a porous armor #12;September 24-25, 2003 HAPL meeting, UW, Madison 2 Integrated Chamber Armor/FW/Blanket Analysis
Raffray, A. René
Baseline Configuration of the Cryogenic System for the International Linear Collider
The paper discusses the main constraints and boundary conditions and describes the baseline configuration of the International Linear Collider (ILC) cryogenic system. The cryogenic layout, architecture and the cooling principle are presented. The paper addresses a plan for study and development required to demonstrate and improve the performance, to reduce cost and to attain the desired reliability.
Casas-Cubillos, J.; Claudet, S.; Parma, V.; Riddone, G.; Serio, L.; Tavian, L.; Vullierme, B.; van Weelderen, R.; /CERN; Chorowski, M.; /Wroclaw Tech. U.; Ganni, R.; Rode, C.; /Jefferson Lab; Klebaner, A.; Peterson, T.; Theilacker, J.; /Fermilab; Rousset, B.; /Grenoble, CEN; Weisend, J.; /SLAC
Absorptive capacity configurations in supply chains: gearing for partner-enabled market knowledge creation
The need for continual value innovation is driving supply chains to evolve from a pure transactional focus to leveraging interorganizational partner ships for sharing information and, ultimately, market knowledge creation. Supply chain partners are (1) ... Keywords: absorptive capacity, configuration approaches, interorganizational information systems, knowledge management, process modularity, rich information, supply chain
Arvind Malhotra; Sanjay Gosain; Omar Sawy
Towards accuracy of role-based access control configurations in component-based systems
Access control is a common concern in most software applications. In component-based systems, although developers can implement access control requirements (ACRs) by simply declaring role-based access control configurations (ACCs) of components, it is ... Keywords: Access control, Accuracy, Component-based system, Software architecture
Lianshan Sun; Gang Huang
Multi-objective optimal design of fuzzy logic controller using a self configurable swarm intelligence algorithm
This paper presents a multi-objective fuzzy logic controller (PSO-FLC) for active vibration control of seismically exited buildings by combining a new self configurable multi-objective PSO (particle swarm optimisation) algorithm with fuzzy logic controller. ... Keywords: Active vibration control, Fuzzy logic, Pareto optimal solutions, Particle swarm optimisation, Seismic excitation
A. Rama Mohan Rao; K. Sivasubramanian
An alternative hypothesis for association between distribution wiring configurations and cancer: Planning phase
Several epidemiologic studies have reported positive associations between electric distribution wiring configurations and cancer incidence, particularly among children. According to the investigators of these studies, the results suggest a possible link between exposure to 60-Hertz magnetic fields because residential magnetic fields are correlated with wiring configurations. This report analyzes the plausibility of an alternate hypothesis to explain the epidemiologic observations, and recommends research to explore its validity. According to the hypothesis, ground return currents in plumbing service lines are associated with electric wiring configuration, and cause the release of corrosion products in tap water, whose ingestion constitutes a risk factor for cancer. To corroborate this hypothesis three conditions must be satisfied: the magnitude of the ground return currents in water pipes is related to wiring configuration, with higher currents generally found associated with homes classified in the high exposure categories; corrosion on the internal surface of water pipe is related to ac currents flowing on the pipe, with higher currents associated with higher rates of corrosion, and ingestion of water from pipes undergoing AC-induced corrosive processes increases the probability of developing cancer. The study's analysis did not uncover any critical data that would undermine the plausibility of this confounder hypothesis. 102 refs., 11 figs., 22 tabs.
Kavet, R. (Environmental Research Information, Inc., Palo Alto, CA (USA)); Silva, J.M. (Enertech Consultants, Campbell, CA (USA))
A study on optimal configuration for the mobile manipulator: using weight value and mobility
A Mobile Manipulator is redundant by itself. Using it�s redundant freedom, a mobile manipulator can perform various task. In this paper, to improve task execution efficiency utilizing the redundancy, optimal configurations of the mobile manipulator ... Keywords: gradient method, mobile robot, mobility, weight value
Jin-Gu Kang; Kwan-Houng Lee
The cost of display switching: a comparison of mobile, large display and hybrid UI configurations
Attaching a large external display can help a mobile device user view more content at once. This paper reports on a study investigating how different configurations of input and output across displays affect performance, subjective workload and preferences ... Keywords: distributed user interfaces, map search, mobile input, multi-display environments, photo search, text search
Umar Rashid; Miguel A. Nacenta; Aaron Quigley
Ensemble Kalman Filter Configurations and Their Performance with the Logistic Map
This paper examines ensemble Kalman filter (EnKF) performance for a number of different EnKF configurations. The study is performed in a perfect-model context using the logistic map as forecast model. The focus is on EnKF performance when the ...
Herschel L. Mitchell; P. L. Houtekamer
Path-coupled Signaling for Dynamic Metering Configuration in IP-based Networks
Path-coupled Signaling for Dynamic Metering Configuration in IP-based Networks Falko Dressler1,klenk,fessi,email@example.com 3 Siemens Communications, Berlin, Germany email@example.com Abstract Metering of the metering entities is based on centralized management systems. These systems usually have no knowledge about
Carle, Georg
Sensor Configuration Selection for Discrete-Event Systems under Unreliable Observations
Algorithms for counting the occurrences of special events in the framework of partially-observed discrete event dynamical systems (DEDS) were developed in previous work. Their performances typically become better as the sensors providing the observations become more costly or increase in number. This paper addresses the problem of finding a sensor configuration that achieves an optimal balance between cost and the performance of the special event counting algorithm, while satisfying given observability requirements and constraints. Since this problem is generally computational hard in the framework considered, a sensor optimization algorithm is developed using two greedy heuristics, one myopic and the other based on projected performances of candidate sensors. The two heuristics are sequentially executed in order to find best sensor configurations. The developed algorithm is then applied to a sensor optimization problem for a multiunit- operation system. Results show that improved sensor configurations can be found that may significantly reduce the sensor configuration cost but still yield acceptable performance for counting the occurrences of special events.
Wen-Chiao Lin; Tae-Sic Yoo; Humberto E. Garcia
Windows Mobile Configuration for UR_RC_InternalSecure (early release) Page 1 of 1
Windows Mobile Configuration for UR_RC_InternalSecure (early release) Page 1 of 1 There are no screen shots for Windows Mobile at this time. 1. Click the start button which appears as the windows_RC_InternalSecure" as "Connected"; 14. Click the "OK" indicator at upper right portion of that window and you'll return connected
Portman, Douglas
New Mexico State University Dial-up Configurations for Windows XP
New Mexico State University Dial-up Configurations for Windows XP To use NMSU campus dial-up on your Windows XP computer, you will need a modem and these instructions to connect. You will also need://my.nmsu.edu/ to sign up. 1. Open the Start menu and click on My Computer. 2. In the My Computer window, click on My
Castillo, Steven P.
New Mexico State University Dial-up Configuration for Windows 2000
New Mexico State University Dial-up Configuration for Windows 2000 To use NMSU campus dial-up on your Windows 2000 computer, you will need a modem and these instructions to connect. You will also need-up Connections, to the right, click on Make New Connection. 2. In the Make a new Connection window, click on Next
New Mexico State University Dial-up Configurations for Windows Vista
New Mexico State University Dial-up Configurations for Windows Vista To use NMSU campus dial-up on your Windows Vista computer, you will need a modem and these instructions to connect. You will also. From the Connect to a network window, click on Set up a connection or network from the bottom set
Using On-Chip Configurable Logic to Reduce Embedded System Software Energy Greg Stitt1
Using On-Chip Configurable Logic to Reduce Embedded System Software Energy Greg Stitt1 , Brian We examine the energy savings possible by re-mapping critical software loops from a microprocessor that reduced software energy is an additional benefit, making such chips even more useful. We find critical
Vahid, Frank
The Reliability of a Fault-Tolerant Configuration Having Variable Coverage
An expression is derived for the reliability of an r-on-m fault-tolerant configuration (r spares supporting m identical operating units) when both the hazard and the coverage probability are functions of time. In addition, the coverage probability is ... Keywords: reliability modeling, Fault coverage, redundancy
J. J. Stiffler
Optimal Battery Configuration in a Residential Home with Time-of-Use Pricing
renewable sources or from the grid when the electricity is cheaper, and provide it when the prices on the usage patterns. In this paper, we develop a framework that considers the physical properties may be lower or completely eliminated if the batteries are not used in specific configurations. I
Simunic, Tajana
Free-space-optical mobile ad hoc networks: Auto-configurable building blocks
Existence of line of sight (LOS) and alignment between the communicating antennas is one of the key requirements for free-space-optical (FSO) communication. To ensure uninterrupted data flow, auto-aligning transmitter and receiver modules are necessary. ... Keywords: Angular diversity, Auto-configurable, Free space optical communication
Murat Yuksel; Jayasri Akella; Shivkumar Kalyanaraman; Partha Dutta
Fusion Engineering and Design 38 (1997) 87113 Configuration and engineering design of the ARIES-RS
configuration that allows rapid removal of full sectors followed by disassembly in the hot cells during plant the failed unit is removed to a hot cell for repairs. Such quick replacement is not possible with a vertical- tained in hot cells after the plant returns to opera- tion. Furthermore, no rewelding is needed
California at San Diego, University of
Experimental investigation of convection heat transfer of CO{sub 2} at supercritical pressures in a vertical circular tube
The convection heat transfer characteristics of supercritical CO{sub 2} in a vertical circular tube of 2 mm inner diameter were investigated experimentally for pressures ranging from 78 to 95 bar, inlet temperatures from 25 to 40 C, and inlet Reynolds numbers from 3800 to 20,000. The effects of the heat flux, thermo-physical properties, buoyancy and thermal acceleration on the convection heat transfer were analyzed. The experimental results show that for high inlet Reynolds numbers (e.g. Re = 9000) and high heat fluxes, a significant local deterioration and recovery of the heat transfer was found for upward flows but not for downward flows. Comparison of the experimental data for inlet Reynolds numbers from 3800 to 20,000 with some well-known empirical correlations showed large differences especially when the heat transfer deteriorates and then recovers when the effect of buoyancy is significant. The experimental data was used to develop modified local turbulent Nusselt number correlations for supercritical CO{sub 2} flowing in vertical small circular tubes. (author)
Li, Zhi-Hui; Jiang, Pei-Xue; Zhao, Chen-Ru; Zhang, Yu. [Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084 (China)
Circular geodesics of naked singularities in the Kehagias-Sfetsos metric of Ho\\v{r}ava's gravity
We discuss photon and test-particle orbits in the Kehagias-Sfetsos (KS) metric. For any value of the Ho\\v{r}ava parameter $\\omega$, there are values of the gravitational mass $M$ for which the metric describes a naked singularity, and this is always accompanied by a vacuum "antigravity sphere" on whose surface a test particle can remain at rest (in a zero angular momentum geodesic), and inside which no circular geodesics exist. The observational appearance of an accreting KS naked singularity in a binary system would be that of a quasi-static spherical fluid shell surrounded by an accretion disk, whose properties depend on the value of $M$, but are always very different from accretion disks familiar from the Kerr-metric solutions. The properties of the corresponding circular orbits are qualitatively similar to those of the Reissner-Nordstr\\"om naked singularities. When event horizons are present, the orbits outside the Kehagias-Sfetsos black hole are qualitatively similar to those of the Schwarzschild metric.
Vieira, Ronaldo S S; Klu?niak, W\\lodek; Stuchl�k, Zden?k; Abramowicz, Marek
Advanced Nuclear Technology: Impact of EPRI Pre-Operational and Operational Configuration Management Report (1022684) on the Nuclear Industry
EPRI Technical Report 1022684, Elements of Pre-Operational and Operational Configuration Management for a New Nuclear Facility, was developed by an EPRI Advanced Nuclear Technology (ANT) technical advisory group whose mission was to develop guidance for establishing a comprehensive configuration management (CM) program for the unique challenges of a new nuclear facility. The program elements developed for the pre-operation phase would then be in place to manage the configuration for the ...
Quasi-Static Hydraulic Control Systems and Energy Savings Potential Using Independent Metering Four-Valve Assembly Configuration .
??In this research, the four valve independent metering configuration is to be investigated. The Independent metering concept will be emphasized and compared to spool valve� (more)
Shenouda, Amir
DOE-STD-1073-2003; DOE Technical Stadnard Configuration Management
NOT MEASUREMENT SENSITIVE DOE-STD-1073-2003 October 2003 DOE STANDARD Configuration Management U.S. Department of Energy AREA CMAN Washington, D.C. 20585 DISTRIBUTION STATEMENT: Approved for public release; further dissemination unlimited. DOE-STD-1073-2003 Configuration Management This document has been reproduced from the best available copy. Available to DOE and DOE contractors from ES&H Technical Information Services, U.S. Department of Energy, (800) 473-4375, fax (301) 903-9823 or on the web at http://tis.eh.doe.gov/techstds/. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 605-6000.
DOE-STD-1073-93-Pt. 1; DOE Standard Guide for Operational Configuration Management Program
1 1 CHAPTER 2 IMPLEMENTATION GUIDANCE FOR OPERATIONAL CONFIGURATION MANAGEMENT This guidance is appropriate for high-hazard facilities expected to operate for an extended period. Since DOE facilities vary in hazard level and circumstances of operation, a graded approach to implementation should be adopted. 2.1 PROGRAM MANAGEMENT ELEMENT The program management element of a configuration management (CM) program coordinates program development and implementation and ensures overall program effectiveness. This element leads the development of the other CM program elements. Development of an effective CM program should be initiated promptly, where needed, to address known issues, to improve compliance with various DOE Orders, and to produce the benefits of improved safety, reduced errors, and increased efficiency.
A Z2 Structure in the Configuration Space of Yang-Mills Theories
We argue for the presence of a Z2 topological structure in the space of static gauge-Higgs field configurations of SU(2n) and SO(2n) Yang-Mills theories. We rigorously prove the existence of a Z2 homotopy group of mappings from the 2-dim. projective sphere RP 2 into SU(2n)/Z2 and SO(2n)/Z2 Lie groups respectively. Consequently the symmetric phase of these theories admits infinite surfaces of odd-parity static and unstable gauge field configurations which divide into two disconnected sectors with integer Chern-Simons numbers n and n + 1/2 respectively. Such a Z2 structure persists in the Higgs phase of the above theories and accounts for the existence of CS = 1/2 odd-parity saddle point solutions to the field equations which correspond to spontaneous symmetry breaking mass scales. 1
Minos Axenides; Andrei Johansen; Jesper M�ller
Effect of geometric configuration and surface area on the thermal transmittance of edge-sealed draperies
Laboratory studies were carried out to investigate the influence of fabric structure and geometric configuration of multilayer window draperies on the thermal insulation characteristics of drapery models. Drapery assemblies representing various configurations of drapery fullness, lining fullness, and spatial separation between lining and drapery fabrics were sealed at sides, top, and bottom to a full-scale window built into an insulated wall between a cold chamber, which simulated outdoor winter conditions, and the inside of a test room, which was maintained at indoor winter conditions. Thermal transmittance of the window/fabric systems was measured by transducers mounted on the surface of the window glass. The temperature of the cold chamber, the temperature and relative humidity of the test room, and the heat transfer were monitored by a desk-top computer system. The influence of fabric structure, drapery and lining, fabric surface area, and volume of air space within the drapery assembly on thermal transmittance are discussed.
Epps, H.H.; Goswami, B.C.; Hassenboehler, C.B.
A Logic Block Enabling Logic Configuration by Non-Experts in Sensor Networks
Recent years have seen the evolution of networks of tiny low power computing blocks, known as sensor networks. In one class of sensor networks a non-expert user, who has little or no experience with electronics or programming, is required to select, connect and/or configure one or more blocks such that the blocks compute a particular Boolean logic function of sensor values. We describe a series of experiments showing that non-expert users have much difficulty with a block based on Boolean logic truth tables, and that a logic block having a sentence-like structure with some configurable switches yields a better success rate. We also show that adding color to a truth table improves results over a traditional truth table. Author Keywords Sensor networks, Boolean logic, embedded computing
Susan Cotterell; Frank Vahid
Simulation and study of thermal performance of liquid desiccant cooling cycle configurations
Five configurations of a 3-ton liquid desiccant cooling cycle were simulated and analyzed on a digital computer. Algebraic equations were developed for the dry bulbtemperatures and humidity ratios at different locations in the systems and solved using a finite difference scheme. The simulations were done at steady state and standard ASHRAE indoor and outdoor conditions. The study compared thermal performance of these five system configurations consisting of a direct evaporative cooler, indirect evaporative cooler(s), liquid desiccant packed dehumidifying tower, and air-to-air heat exchanger. Constant effectiveness of 0.85 and 0.9 were assumed for the direct evaporative cooler and air-to-air heat exchanger respectively. The performance of these five cycles is judged by the thermal Coefficient of Performance (COP). The Sensible Heat Ratio (SHR) is used to quantify the ratio of sensible cooling provided to the total cooling done (sensible plus latent).
Dhir, Rajesh
Insulated conductor temperature limited heater for subsurface heating coupled in a three-phase WYE configuration
A heating system for a subsurface formation is described. The heating system includes a first heater, a second heater, and a third heater placed in an opening in the subsurface formation. Each heater includes: an electrical conductor; an insulation layer at least partially surrounding the electrical conductor; and an electrically conductive sheath at least partially surrounding the insulation layer. The electrical conductor is electrically coupled to the sheath at a lower end portion of the heater. The lower end portion is the portion of the heater distal from a surface of the opening. The first heater, the second heater, and the third heater are electrically coupled at the lower end portions of the heaters. The first heater, the second heater, and the third heater are configured to be electrically coupled in a three-phase wye configuration.
Vinegar, Harold J. (Bellaire, TX); Sandberg, Chester Ledlie (Palo Alto, CA)
System configured for applying a modifying agent to a non-equidimensional substrate
The present invention is related to systems and methods for modifying various non-equidimensional substrates with modifying agents. The system comprises a processing chamber configured for passing the non-equidimensional substrate therethrough, wherein the processing chamber is further configured to accept a treatment mixture into the chamber during movement of the non-equidimensional substrate through the processing chamber. The treatment mixture can comprise of the modifying agent in a carrier medium, wherein the carrier medium is selected from the group consisting of a supercritical fluid, a near-critical fluid, a superheated fluid, a superheated liquid, and a liquefied gas. Thus, the modifying agent can be applied to the non-equidimensional substrate upon contact between the treatment mixture and the non-equidimensional substrate.
Janikowski; Stuart K. (Idaho Falls, ID), Argyle; Mark D. (Idaho Falls, ID), Fox; Robert V. (Idaho Falls, ID), Propp; W. Alan (Idaho Falls, ID), Toth; William J. (Idaho Falls, ID), Ginosar; Daniel M. (Idaho Falls, ID), Allen; Charles A. (Idaho Falls, ID), Miller; David L. (Idaho Falls, ID)
Photovoltaic power converter system with a controller configured to actively compensate load harmonics
Photovoltaic power converter system including a controller configured to reduce load harmonics is provided. The system comprises a photovoltaic array and an inverter electrically coupled to the array to generate an output current for energizing a load connected to the inverter and to a mains grid supply voltage. The system further comprises a controller including a first circuit coupled to receive a load current to measure a harmonic current in the load current. The controller includes a second circuit to generate a fundamental reference drawn by the load. The controller further includes a third circuit for combining the measured harmonic current and the fundamental reference to generate a command output signal for generating the output current for energizing the load connected to the inverter. The photovoltaic system may be configured to compensate harmonic currents that may be drawn by the load.
de Rooij, Michael Andrew (Clifton Park, NY); Steigerwald, Robert Louis (Burnt Hills, NY); Delgado, Eladio Clemente (Burnt Hills, NY)
Site-specific electronic configurations of Fe 3d states by energy loss by channeled electrons
Site-specific configurations of Fe 3d electrons in a spinel ferrite were investigated by electron energy loss spectroscopy under electron channeling conditions. Site-specific spectra were extracted by applying a multivariate curve resolution (MCR) technique to the data set. An electronic difference in the Fe sites caused by ligand field splitting of trivalent Fe was probed. This demonstrated the promise of site-specific valence and spin state analysis in spintronics applications of spinel ferrites.
Tatsumi, Kazuyoshi; Muto, Shunsuke; Nishida, Ikuo [Department of Materials, Physics, and Energy Engineering, Nagoya University, Chikusa, Nagoya 464-8603 (Japan); Rusz, Jan [Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120 Uppsala (Sweden)
Study of inertia welding: the sensitivity of weld configuration and strength to variations in welding parameters
An experiment is described which is designed to demonstrate the forgiveness of inertia welding, that is, the relative insensitivity of weld strength to variations in energy (rotational speed of parts) and axial force. Although easily observed variations in the welding parameters produced easily observed changes in weldment configuration and changes in dimension (upset), only extremes in parameters produced changes in weld strength. Consequently, process monitoring and product inspection would be sufficient for quality assurance in a production environment.
Mote, M.W.
Electron density and temperature profile diagnostics for C-2 field reversed configuration plasmas
The 9-point Thomson scattering diagnostic system for the C-2 field reversed configuration plasmas is improved and the measured electron temperature profiles are consistent with theoretical expectations. Rayleigh scattering revealed a finite line width of the ruby laser emission, which complicates density calibration. Taking advantage of the plasma wobble motion, density profile reconstruction accuracy from the 6-chord two-color CO{sub 2}/HeNe interferometer data is improved.
Deng, B. H.; Kinley, J. S.; Schroeder, J. [Tri Alpha Energy, Inc., Rancho Santa Margarita, California 92688 (United States)
Computer software configuration management plan for 200 East/West Liquid Effluent Facilities
This computer software management configuration plan covers the control of the software for the monitor and control system that operates the Effluent Treatment Facility and its associated truck load in station and some key aspects of the Liquid Effluent Retention Facility that stores condensate to be processed. Also controlled is the Treated Effluent Disposal System`s pumping stations and monitors waste generator flows in this system as well as the Phase Two Effluent Collection System.
Graf, F.A. Jr.
Optimum cycle parameters of coal fired closed cycle gas turbine in regenerative and combined cycle configurations
This paper presents the methodology developed for the estimation of thermodynamic performance and reports the optimum cycle parameters of coal fired CCGT in regenerative and combined cycle configurations using air, helium and carbon dioxide as working gases. A rigorous approach has been followed for the determination of the cycle efficiency by assuming the specific heat of working gases as a continuous function of temperature for accurate estimation of cycle parameters. 14 refs.
Rao, J.S.
Association of Wire Code Configuration With Long-Term Average 60-Hz Magnetic Fields and Exposure
Previous studies have reported associations between cancer and the configuration of outdoor electric utility lines, popularly referred to as the wire code, which were developed as a surrogate for time-weighted-average (TWA) exposure to magnetic fields. A study was conducted to measure the magnetic fields in over 200 houses in eight areas within the contiguous United States. This interim report presents the major results of that study.
Evaluation of alternate system configurations for solar repowering electric power plants
An assessment was performed for the Department of Energy to establish the technical feasibility, utility system impact and economic attractiveness of the solar repowered, El Paso Electric (EPE) Company Newman Unit number1. Typical characteristics of a baseline configuration, selected at the initiation of the study, and four alternative systems were defined. System cost estimates were made and a system cost/value analysis was performed. 2 refs.
Van Bibber, L.E.; Parker, W.G.
Thermolysis of (1R,2R)-1,2-dideuteriocyclobutane. An application of vibrational circular dichroism to kinetic analysis
The relative rates of geometric isomerization to racemization have been studied for the title compound by using a combination of infrared (IR) and vibrational circular dichroism (VCD) spectroscopies, respectively. The results are interpreted with a kinetic and mechanistic scheme which parallels that used by Berson, Pedersen, and Carpenter on a similar study of chiral cyclopropane-d/sub 2/ thermolysis. Relative rates of isomerization to stereomutation of 1.5 +/- 0.4 were obtained which can be interpreted to be consistent with a mechanism best described by random methylene rotation in tetramethylene-d/sub 2/. This is the first application of VCD to kinetic analysis, and the advantages of IR techniques over the more usually employed UV spectroscopies to this type of basic mechanistic problem are illustrated.
Chickos, J.S.; Annamalai, A.; Keiderling, T.A.
X-ray absorption and magnetic circular dichroism studies of Co2FeAl in magnetic tunnel junctions
The bulk magnetic moment and the element specific magnetic moment of Co{sub 2}FeAl thin films were examined as a function of annealing temperature by alternating gradient magnetometer (AGM) and X-ray absorption spectroscopy (XAS)/X-ray magnetic circular dichroism (XMCD), respectively. A high magnetic moment can be achieved for all annealing temperatures and the predicted bulk and interface magnetic moment of about 5 {tilde A}{sub B} are reached via heating. We will also present tunnel magnetoresistance (TMR) values of up to 153% at room temperature and 260% at 13 K for MgO based magnetic tunnel junctions (MTJs) with Co{sub 2}FeAl and Co-Fe electrodes.
Ebke, D.; Kugler, Z.; Thomas, P.; Schebaum, O.; Schafers, M.; Nissen, D.; Schmalhorst, J.; Hutten, A.; Arenholz, E.; Thomas, A.
Monoenergetic acceleration of a target foil by circularly polarized laser pulse in RPA regime without thermal heating
A kinetic model of the monoenergetic acceleration of a target foil irradiated by the circularly polarized laser pulse is developed. The target moves without thermal heating with constant acceleration which is provided by chirping the frequency of the laser pulse and correspondingly increasing its intensity. In the accelerated reference frame, bulk plasma in the target is neutral and its parameters are stationary: cold ions are immobile while nonrelativistic electrons bounce back and forth inside the potential well formed by ponderomotive and electrostatic potentials. It is shown that a positive charge left behind of the moving target in the ion tail and a negative charge in front of the target in the electron sheath form a capacitor whose constant electric field accelerates the ions of the target. The charge separation is maintained by the radiation pressure pushing electrons forward. The scalings of the target thickness and electromagnetic radiation with the electron temperature are found.
Khudik, V.; Yi, S. A.; Siemon, C.; Shvets, G. [Department of Physics and Institute for Fusion Studies, University of Texas at Austin, One University Station C1500, Austin, Texas 78712 (United States)
Soft x-ray circular dichroism and scattering using a modulated elliptically polarizing wiggler and double synchronous detection
We have constructed an experimental station (beamline) at the National Synchrotron Light Source to measure circular dichroism (CD) using soft x-rays (250 {le} hv {le} 900 eV) from a time modulated elliptically polarizing wiggler. The polarization of the soft x-ray beam switches periodically between two opposite polarizations, hence permitting the use of phase-sensitive (lock-in) detection. While the wiggler can be modulated at frequencies up to 100 Hz, switching transients limit the actual practical frequency to {approx}25 Hz. With analog detection, switching transients are blocked by a chopper synchronized to the frequency and phase of the wiggler. The CD is obtained from the ratio of the signal recovered at the frequency of polarization modulation, f, to the average beam intensity, which is recovered by synchronous detection at frequency 2f.
Sutherland, J.C.; Polewski, K.; Monteleone, D.C. [and others
Configuration of Detection Software: A comparison of Decision and Game Theory Approaches. Decision Analysis
Firms are increasingly relying on software to detect fraud in domains such as security, financial services, tax, and auditing. A fundamental problem in using detection software for fraud detection is achieving the optimal balance between the detection and false-positive rates. Many firms use decision theory to address the configuration problem. Decision theory is based on the presumption that the firm�s actions do not influence the behavior of fraudsters. Game theory recognizes the fact that fraudsters do modify their strategies in response to firms � actions. In this paper, we compare decision and game theory approaches to the detection software configuration problem when firms are faced with strategic users. We find that under most circumstances firms incur lower costs when they use the game theory as opposed to the decision theory because the decision theory approach frequently either over- or underconfigures the detection software. However, firms incur the same or lower cost under the decision theory approach compared with the game theory approach in a simultaneousmove game if configurations under decision theory and game theory are sufficiently close. A limitation of the game theory approach is that it requires user-specific utility parameters, which are difficult to estimate. Decision theory, in contrast to game theory, requires the fraud probability estimate, which is more easily obtained. Key words: detection software; fraud detection; intrusion detection; false alarm rate; detection rate; ROC curve; decision theory; game theory
Huseyin Cavusoglu; Srinivasan Raghunathan
Software solutions manage the definition, operation, maintenance and configuration control of the National Ignition Facility
The National Ignition Facility (NIF) is the world's largest laser composed of millions of individual parts brought together to form one massive assembly. Maintaining control of the physical definition, status and configuration of this structure is a monumental undertaking yet critical to the validity of the shot experiment data and the safe operation of the facility. The NIF business application suite of software provides the means to effectively manage the definition, build, operation, maintenance and configuration control of all components of the National Ignition Facility. State of the art Computer Aided Design software applications are used to generate a virtual model and assemblies. Engineering bills of material are controlled through the Enterprise Configuration Management System. This data structure is passed to the Enterprise Resource Planning system to create a manufacturing bill of material. Specific parts are serialized then tracked along their entire lifecycle providing visibility to the location and status of optical, target and diagnostic components that are key to assessing pre-shot machine readiness. Nearly forty thousand items requiring preventive, reactive and calibration maintenance are tracked through the System Maintenance & Reliability Tracking application to ensure proper operation. Radiological tracking applications ensure proper stewardship of radiological and hazardous materials and help provide a safe working environment for NIF personnel.
Dobson, D; Churby, A; Krieger, E; Maloy, D; White, K
Randomly distilling W-class states into general configurations of two-party entanglement
In this article we obtain results for the task of converting a single N-qubit W-class state (of the form {radical}(x{sub 0})|00...0>+{radical}(x{sub 1})|10...0>+{center_dot}{center_dot}{center_dot}+{radical}(x{sub N})|00...1>) into maximum entanglement shared between two random parties. Previous studies in random distillation have not considered how the particular choice of target pairs affects the transformation, and here we develop a strategy for distilling into general configurations of target pairs. We completely solve the problem of determining the optimal distillation probability for all three-qubit configurations and most four-qubit configurations when x{sub 0}=0. Our proof involves deriving new entanglement monotones defined on the set of four-qubit W-class states. As an additional application of our results, we present new upper bounds for converting a generic W-class state into the standard W state |W{sub N}>={radical}((1/N))(|10...0>+{center_dot}{center_dot}{center_dot}+|00...1>).
Cui, W.; Chitambar, E.; Lo, H. K. [Center for Quantum Information and Quantum Control (CQIQC), Department of Physics and Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4 (Canada)
Passive Superconducting Flux Conservers for Rotating-Magnetic-Field-Driven Field-Reversed Configurations
The Princeton Field-Reversed Configuration (PFRC) experiment employs an odd-parity rotating magnetic field (RMFo) current drive and plasma heating system to form and sustain high-? plasmas. For radial confinement, an array of coaxial, internal, passive, flux-conserving (FC) rings applies magnetic pressure to the plasma while still allowing radio-frequency RMFo from external coils to reach the plasma. The 3 ms pulse duration of the present experiment is limited by the skin time (?fc) of its room-temperature copper FC rings. To explore plasma phenomena with longer characteristic times, the pulse duration of the next-generation PFRC-2 device will exceed 100 ms, necessitating FC rings with (?fc > 300 ms. In this paper we review the physics of internal, discrete, passive FCs and describe the evolution of the PFRC's FC array. We then detail new experiments that have produced higher performance FC rings that contain embedded high-temperature superconducting (HTS) tapes. Several HTS tape winding configurations have been studied and a wide range of extended skin times, from 0.4 s to over 103 s, has been achieved. The new FC rings must carry up to 3 kA of current to balance the expected PFRC-2 plasma pressure, so the dependence of the HTS-FC critical current on the winding configuration and temperature was also studied. From these experiments, the key HTS-FC design considerations have been identified and HTS-FC rings with the desired performance characteristics have been produced.
E. Oz, C.E. Myers, M.R. Edwards, B. Berlinger, A. Brooks, and S.A. Cohen
Configuration adjustment potential of the Very High Temperature Reactor prismatic cores with advanced actinide fuels
Minor actinides represent the long-term radiotoxicity of nuclear wastes. As one of their potential incineration options, partitioning and transmutation in fission reactors are seriously considered worldwide. If implemented, these technologies could also be a source of nuclear fuel materials required for sustainability of nuclear energy. The objective of this research was to evaluate performance characteristics of Very High Temperature Reactors (VHTRs) and their variations due to configuration adjustments targeting achievability of spectral variations. The development of realistic whole-core 3D VHTR models and their benchmarking against experimental data was an inherent part of the research effort. Although the performance analysis was primarily focused on prismatic core configurations, 3D pebble-bed core models were also created and analyzed. The whole-core 3D models representing the prismatic block and pebble-bed cores were created for use with the SCALE 5.0 code system. Each of the models required the Dancoff correction factor to be externally calculated. The code system DANCOFF-MCThe whole-core/system 3D models with multi-heterogeneity treatments were validated by the benchmark problems. Obtained results are in agreement with the available High Temperature Test Reactor data. Preliminary analyses of actinide-fueled VHTR configurations have indicated promising performance characteristics. Utilization of minor actinides as a fuel component would facilitate development of new fuel cycles and support sustainability of a fuel source for nuclear energy assuring future operation of Generation IV nuclear energy systems. was utilized to perform the Dancoff factor calculations.
Ames, David E, II
Windows 7 Configuration for UR_RC_InternalSecure Page 1 of 4 http://www.rochester.edu/it/wireless
Windows 7 Configuration for UR_RC_InternalSecure Page 1 of 4 http_RC_InternalSecure" wireless network Ensure that "Connect automatically" is checked Click Connect #12;Windows 7 are connecting to UR_RC_InternalSecure. #12;Windows 7 Configuration for UR_RC_InternalSecure Page 3
Circular A-110 CIRCULAR A-110
Agreements with State and Local Governments," and the Federal agencies' grants management common rule which standardized and codified the administrative requirements Federal agencies impose on State and local grantees Federal agencies in the administration of grants to and agreements with institutions of higher education
Weston, Ken
Transient analysis and energy optimization of solar heating and cooling systems in various configurations
In this paper, a transient simulation model of solar-assisted heating and cooling systems (SHC) is presented. A detailed case study is also discussed, in which three different configurations are considered. In all cases, the SHC system is based on the coupling of evacuated solar collectors with a single-stage LiBr-H{sub 2}O absorption chiller, and a gas-fired boiler is also included for auxiliary heating, only during the winter season. In the first configuration, the cooling capacity of the absorption chiller and the solar collector area are designed on the basis of the maximum cooling load, and an electric chiller is used as the auxiliary cooling system. The second layout is similar to the first one, but, in this case, the absorption chiller and the solar collector area are sized in order to balance only a fraction of the maximum cooling load. Finally, in the third configuration, there is no electric chiller, and the auxiliary gas-fired boiler is also used in summer to feed the absorption chiller, in case of scarce solar irradiation. The simulation model was developed using the TRNSYS software, and included the analysis of the dynamic behaviour of the building in which the SHC systems were supposed to be installed. The building was simulated using a single-lumped capacitance model. An economic model was also developed, in order to assess the operating and capital costs of the systems under analysis. Furthermore, a mixed heuristic-deterministic optimization algorithm was implemented, in order to determine the set of the synthesis/design variables that maximize the energy efficiency of each configuration under analysis. The results of the case study were analyzed on monthly and weekly basis, paying special attention to the energy and monetary flows of the standard and optimized configurations. The results are encouraging as for the potential of energy saving. On the contrary, the SHC systems appear still far from the economic profitability: however, this is notoriously true for the great majority of renewable energy systems. (author)
Calise, F.; Dentice d'Accadia, M.; Palombo, A. [DETEC - University of Naples Federico II, P.le Tecchio 80, 80125 Naples (Italy)
The wear of metal carbide stuck circular saw blades used in the spruce longitudinal sawing processing: a factor influencing power consumption
The power consumption for spruce wood processing is of about 70%., as in the case of the other resinous species. The wear of the circular saw blades is one of the factors which influences both the power consumption and the processing quality significantly. ... Keywords: cost, lastingness, power consumption, sawing, spruce, wear
Cosmin Spirchez; Anne-Marie Loredana Badescu; Valentin Ditu; Nicolae Taran; Pirnuta Oana-Andreea
Identification of circular codes in bacterial genomes and their use in a factorization method for retrieving the reading frames of genes
We developed a statistical method that allows each trinucleotide to be associated with a unique frame among the three possible ones in a (protein coding) gene. An extensive gene study in 175 complete bacterial genomes based on this statistical approach ... Keywords: Bacterial genome, Circular code, Frame
Gabriel Frey; Christian J. Michel
Configuration management plan for waste tank farms and the 242-A evaporator of tank waste remediation system
The configuration management architecture presented in this Configuration Management Plan is based on the functional model established by DOE-STD-1073-93, ``Guide for Operational Configuration Management Program.`` The DOE Standard defines the configuration management program by the five basic program elements of ``program management,`` ``design requirements,`` ``document control,`` ``change control,`` and ``assessments,`` and the two adjunct recovery programs of ``design reconstitution,`` and ``material condition and aging management.`` The CM model of five elements and two adjunct programs strengthen the necessary technical and administrative control to establish and maintain a consistent technical relationship among the requirements, physical configuration, and documentation. Although the DOE Standard was originally developed for the operational phase of nuclear facilities, this plan has the flexibility to be adapted and applied to all life-cycle phases of both nuclear and non-nuclear facilities. The configuration management criteria presented in this plan endorses the DOE Standard and has been tailored specifically to address the technical relationship of requirements, physical configuration, and documentation during the full life cycle of the Waste Tank Farms and 242-A Evaporator of Tank Waste Remediation System.
Laney, T.
Thermal Analysis of the 9975 Package with the 3013 Configuration During Normal Conditions of Transport
Thermal analysis of the 9975 package with three configurations of the BNFL 3013 outer container (with Rocky Flats, SRS, and BNFL inner containers) have been performed for Normal Conditions of Transport (NCT) of plutonium oxide and metal. The NCT is defined in 10 CFR 71.71(c)(1) s an ambient of 100 F (38 C) in still air with 800 W/m{sup 2} and 400 W/m{sup 2} of solar heating on the drum top and sides, respectively. The 9975 drum package is considered to be in an upright position, and the drum bottom is adiabatic. The Rocky and SRS 3013 configurations with Pu metal contents (19 watts) result in acceptable (similar) packaging temperatures, however the plutonium metal temperatures are lower for the SRS design (SRS has helium fill gas whereas Rocky is essentially air filled). The BNFL configuration for Pu oxide contents (19 watts) result in acceptable temperatures and pressures based on limits in the 9975 Safety Analysis Report (SARP). However, for 30 watts of Pu oxide, the fiberboard peak temperatures are very near the SARP allowable. The pressure in the 3013 container is 688.4 psig for the 30 watt Pu oxide content and 569.5 psig for the 19 watt Pu oxide content. Gas species in the pressure computations include air, helium and hydrogen from complete radiolysis of the moisture. The oxygen generated from the radiolysis of the water is not included as a pressure contributor. The gas temperature in the pressure computations was very conservatively assumed to be the maximum plutonium temperature.
Hensel, S
Creating a strategic plan for configuration management using computer aided software engineering (CASE) tools
This paper provides guidance in the definition, documentation, measurement, enhancement of processes, and validation of a strategic plan for configuration management (CM). The approach and methodology used in establishing a strategic plan is the same for any enterprise, including the Department of Energy (DOE), commercial nuclear plants, the Department of Defense (DOD), or large industrial complexes. The principles and techniques presented are used world wide by some of the largest corporations. The authors used industry knowledge and the areas of their current employment to illustrate and provide examples. Developing a strategic configuration and information management plan for DOE Idaho Field Office (DOE-ID) facilities is discussed in this paper. A good knowledge of CM principles is the key to successful strategic planning. This paper will describe and define CM elements, and discuss how CM integrates the facility`s physical configuration, design basis, and documentation. The strategic plan does not need the support of a computer aided software engineering (CASE) tool. However, the use of the CASE tool provides a methodology for consistency in approach, graphics, and database capability combined to form an encyclopedia and a method of presentation that is easily understood and aids the process of reengineering. CASE tools have much more capability than those stated above. Some examples are supporting a joint application development group (JAD) to prepare a software functional specification document and, if necessary, provide the capability to automatically generate software application code. This paper briefly discusses characteristics and capabilities of two CASE tools that use different methodologies to generate similar deliverables.
Smith, P.R.; Sarfaty, R.
An opacity model (OPAS) combining detailed configuration and level accounting treatments has been developed to calculate radiative opacity of plasmas in local thermodynamic equilibrium. The model is presented and used to compute spectral opacities of a solar mixture. Various density-temperature couples have been considered from the solar center up to the vicinity of the radiative/convective zone interface. For a given solar thermodynamic path, OPAS calculations are compared to Opacity Project (OP) and OPAL data. Rosseland mean opacity values are in very good agreement over all the considered solar thermodynamic path, while OPAS and OP spectral opacities of each element may vary considerably. Main sources of discrepancy are discussed.
Blancard, Christophe; Cosse, Philippe; Faussurier, Gerald [CEA, DAM, DIF, F-91297 Arpajon (France)
Treated Effluent Disposal Facility (TEDF) Operator Training Station (OTS) System Configuration Management Plan
The Treated Effluent Disposal Facility Operator Training Station (TEDF OTS) is a computer based training tool designed to aid plant operations and engineering staff in familiarizing themselves with the TEDF Central Control System (CCS). It consists of PC compatible computers and a Programmable Logic Controller (PLC) designed to emulate the responses of various plant components connected to or under the control of the CCS. The system trains operators by simulating the normal operation but also has the ability to force failures of different equipment allowing the operator to react and observe the events. The paper describes organization, responsibilities, system configuration management activities, software, and action plans for fully utilizing the simulation program.
Carter, R.L. Jr.
Internal natural gas reformer-dividers for a solid oxide fuel cell generator configuration
This patent describes a fuel cell generator configuration. It comprises electrically connected, axially elongated, fuel cells, each cell having an outer and inner electrode with solid oxide electrolyte therebetween; where elongated dividers separate and are positioned between fuel cells, and where at least one of the elongated dividers is hollow, the hollow divider having solid elongated walls, a reformable fuel mixture entrance, and an exit allowing passage of reformed fuel to the fuel cells, and where the cross-section of the divider contains a catalytic reforming material.
Reichner, P.
INTERNATIONAL UNION OF OPERATING ENGINEERS NATIONAL HAZMAT PROGRAM - ADAMANT CIRCULAR SAW OENHP{number_sign}: 2001-05, VERSION A
Florida International University's (FIU) Hemispheric Center for Environmental Technology (HCET) evaluated five saws for their effectiveness in cutting up specially prepared fiberglass-reinforced plywood crates. These crates were built as surrogates for crates that presently hold radioactive contaminated glove boxes at the Department of Energy's (DOE) Los Alamos facility. The Adamant circular saw was assessed on August 14, 2001. During the FIU test of efficacy, a team from the Operating Engineers National Hazmat Program (OENHP) evaluated the occupational safety and health issues associated with this technology. The Adamant was only used during a limited ''test'' on a regular plywood crate due to safety considerations of the tool for this application. The Adamant circular saw, a counter-rotating twin-cutter, constructed with blades that work differently than conventional cutting wheels with twin blades, each rotating in opposite directions. It is used to cut wood and metals. Each blade is approximately 8 3/4 inches in diameter with a maximum cutting depth of 2 1/2 inches. The machine has two rotation speeds: 1,900 and 2,900 rotations per minute (rpm). The saw is operated with an interlocked, guarded trigger switch located at the end of the saw opposite the cutting blades. To operate the saw, the safety interlock must be depressed prior to powering the saw with the trigger control. The saw is supported by a handle at the front of the saw near the cutting blades. The top part of the blades is guarded near the handle, with approximately three-fourths of the face of the blades exposed. The Adamant circular saw is an innovative technology used to cut metals and wood. Its safety features include: interlocking switch for powering the saw, overload indicator and shutoff, and an electronic brake that stops the engine immediately when the start button is released. The top part of the blades is guarded near the motor. With approximately three-fourths of the face of the blades open, the operator is exposed to the potential risk of serious and minor cuts and abrasions when using and handling the saw. There is also potential for damage to the blades if the saw is not stored properly. Without guarding on the lower part of the blades, these can be damaged if the saw is dropped or rested on the cutting blades. Based upon the industrial hygiene sampling conducted for the other four saws demonstrated at FIU, noise levels, nuisance dust, and airborne fiberglass may be a problem when using this technology for the cutting of fiberglass-reinforced plywood crates. No industrial hygiene sampling was conducted while the Adamant saw was in use. Engineering controls should be used to eliminate these problems whenever possible. Where this is not possible, administrative controls, training, and proper personal protective equipment (PPE) should be used. Respirators should be used if engineering controls do not sufficiently control the dust or fiberglass generated. Respirators should be equipped with an organic vapor and acid gas cartridge with High Efficiency Particulate Air (HEPA) filter, since during the demonstration, the workers complained of an odd smell, which may have been the breakdown of the fiberglass.
Compact circularly polarized slot-ring antenna and microstrip bandpass filter using triangular open-loop resonators
In this thesis two different research topics are undertaken, both in the area of compact RF/microwave circuits design. The first topic involves the design of a compact circularly polarized (CP) slot-ring antenna. A study of several compact CP microstrip and slotline antennas reported in the past has been carried out. In this research, a method of reducing the size of a printed slot-ring antenna is proposed. The reduction in size is achieved by introducing meandered-slot sections in the ring. Circular polarization is achieved by introducing an asymmetry, also a meandered-slot section, and feeding the antenna at an angle of 45o from the asymmetry using a microstrip feed line. The minimum axial ratio of 0.4 dB is obtained at 2.46 GHz, which is the operating frequency of the antenna. The size of the proposed antenna is reduced by about 50% compared to a conventional CP slot-ring antenna and it displays a CP bandwidth of about 2.5%. The simulated and measured results are presented, and they are in good agreement. The small size of the antenna makes it very suitable for use in modern RF/microwave wireless systems which require compact, low cost, and high performance circuits. Moreover, its CP behavior makes it more attractive for applications such as satellite communications. The second topic in the thesis involves the design of a compact microstrip bandpass filter using triangular open-loop resonators. A new compact three-pole microstrip bandpass filter using four triangular open-loop resonators is presented. A fourth resonator is placed to provide cross-coupling in the structure which gives a better skirt rejection. The measured pass-band center frequency is 2.85 GHz. The filter demonstrates about 7% bandwidth with insertion loss of less than 1 dB in the passband, a return loss of greater than 15 dB and out-of-band rejection of greater than 30 dB. The simulated and measured results are in good agreement. The proposed filter is very attractive for use in modern wireless systems which require bandpass filters having compact size, low insertion loss, high selectivity, and good out-of-band rejection.
Farooqui, Muhammad Fahad
Combining structured and unstructured data in a configurable web-based logbook
A typical electronic logbook is designed as a general-purpose system for recording time-ordered events and actions and, therefore, allows for a great flexibility in recording information, but the data is unstructured. To better position it in a specific context (e.g., a, test facility, a group activity log) it needs to support both structured data (keyword, authors, etc) and unstructured data (text, title, attachments) in that context. To do this, a logbook system can define a set of attributes, possibly built as a hierarchy. These application-specific attributes will be associated with each entry. To be flexible, such a system has to be configurable to allow for tailoring it to each specific environment. The paper describes a design, functionality, and experiences with WebLog, a database-configurable electronic logbook developed with the J2EE Web technology. Various functional and technical properties of the system are discussed, including views, searches, threads of entries, an automated alerting system as well as integration with other applications.
Nogiec, J.; Trombly-Freytag, K.; /Fermilab
Solid oxide fuel cell generator with removable modular fuel cell stack configurations
A high temperature solid oxide fuel cell generator produces electrical power from oxidation of hydrocarbon fuel gases such as natural gas, or conditioned fuel gases, such as carbon monoxide or hydrogen, with oxidant gases, such as air or oxygen. This electrochemical reaction occurs in a plurality of electrically connected solid oxide fuel cells bundled and arrayed in a unitary modular fuel cell stack disposed in a compartment in the generator container. The use of a unitary modular fuel cell stack in a generator is similar in concept to that of a removable battery. The fuel cell stack is provided in a pre-assembled self-supporting configuration where the fuel cells are mounted to a common structural base having surrounding side walls defining a chamber. Associated generator equipment may also be mounted to the fuel cell stack configuration to be integral therewith, such as a fuel and oxidant supply and distribution systems, fuel reformation systems, fuel cell support systems, combustion, exhaust and spent fuel recirculation systems, and the like. The pre-assembled self-supporting fuel cell stack arrangement allows for easier assembly, installation, maintenance, better structural support and longer life of the fuel cells contained in the fuel cell stack.
Gillett, James E. (Greensburg, PA); Dederer, Jeffrey T. (Valencia, PA); Zafred, Paolo R. (Pittsburgh, PA); Collie, Jeffrey C. (Pittsburgh, PA)
SCALE-4 Analysis of LaSalle Unit 1 BWR Commercial Reactor Critical Configurations
Five commercial reactor criticals (CRCs) for the LaSalle Unit 1 boiling-water reactor have been analyzed using KENO V.a, the Monte Carlo criticality code of the SCALE 4 code system. The irradiated fuel assembly isotopics for the criticality analyses were provided by the Waste Package Design team at the Yucca Mountain Project in the US, who performed the depletion calculations using the SAS2H sequence of SCALE 4. The reactor critical measurements involved two beginning-of-cycle and three middle-of-cycle configurations. The CRCs involved relatively low-cycle burnups, and therefore contained a relatively high gadolinium poison content in the reactor assemblies. This report summarizes the data and methods used in analyzing the critical configurations and assesses the sensitivity of the results to some of the modeling approximations used to represent the gadolinium poison distribution within the assemblies. The KENO V.a calculations, performed using the SCALE 44GROUPNDF5 ENDF/B-V cross-section library, yield predicted k{sub eff} values within about 1% {Delta}k/k relative to reactor measurements for the five CRCs using general 8-pin and 9-pin heterogeneous gadolinium poison pin assembly models.
Gauld, I.C.
SCALE-4 Analysis of LaSalle Unit 1 BWR Commercial Reactor Critical Configuration
Five commercial reactor criticals (CRCs) for the LaSalle Unit 1 boiling-water reactor have been analyzed using KENO V.a, the Monte Carlo criticality code of the SCALE 4 code system. The irradiated fuel assembly isotopics for the criticality analyses were provided by the Waste Package Design team at the Yucca Mountain Project in the United States, who performed the depletion calculations using the SAS2H sequence of SCALE 4. The reactor critical measurements involved two beginning-of-cycle and three middle-of-cycle configurations. The CRCs involved relatively low-cycle burnups, and therefore contained a relatively high gadolinium poison content in the reactor assemblies. This report summarizes the data and methods used in analyzing the critical configurations and assesses the sensitivity of the results to some of the modeling approximations used to represent the gadolinium poison distribution within the assemblies. The KENO V.a calculations, performed using the SCALE 44GROUPNDF5 ENDF/B-V cross-section library, yield predicted k{sub eff} values within about 1% {Delta}k/k relative to reactor measurements for the five CRCs using general 8-pin and 9-pin heterogeneous gadolinium poison pin assembly models.
A high temperature solid oxide fuel cell generator produces electrical power from oxidation of hydrocarbon fuel gases such as natural gas, or conditioned fuel gases, such as carbon monoxide or hydrogen, with oxidant gases, such as air or oxygen. This electrochemical reaction occurs in a plurality of electrically connected solid oxide fuel cells bundled and arrayed in a unitary modular fuel cell stack disposed in a compartment in the generator container. The use of a unitary modular fuel cell stack in a generator is similar in concept to that of a removable battery. The fuel cell stack is provided in a pre-assembled self-supporting configuration where the fuel cells are mounted to a common structural base having surrounding side walls defining a chamber. Associated generator equipment may also be mounted to the fuel cell stack configuration to be integral therewith, such as a fuel and oxidant supply and distribution systems, fuel reformation systems, fuel cell support systems, combustion, exhaust and spent fuel recirculation systems, and the like. The pre-assembled self-supporting fuel cell stack arrangement allows for easier assembly, installation, maintenance, better structural support and longer life of the fuel cells contained in the fuel cell stack. 8 figs.
Gillett, J.E.; Dederer, J.T.; Zafred, P.R.; Collie, J.C.
Traveling wave current drive theory for an arbitrary m-polar configuration
An extension of the formalism employed to describe current drive in magnetized plasmas by means of traveling magnetic fields (or double-helix configuration) is presented. In all previous theoretical studies, only driving fields with dipolar topology have been employed and the figure of merit of the current drive mechanism has never been analyzed in terms of the dissipation in the power feeding circuit. In this paper, we show how to express the model equations in terms of the current amplitude in the coils, for an arbitrary number of equally spaced coils wound around the plasma column. We present a brief review of the existing theory and a theoretical formulation, valid for an arbitrary m-polar helical symmetry, which removes the above mentioned complications and limitations. In the limit of straight coils, our magnetic field expression agrees exactly with well-established results of the literature for rotating magnetic field current drive. Finally, we present initial numerical results from a recently developed code which consistently compares the steady driven nonlinear Hall currents and steady fields, corresponding to different configurations in terms of the Ohmic dissipation in the helical coils and discuss future perspectives.
Duarte, V. N. [Instituto de Fisica, Universidade de Sao Paulo, 05508-090 Sao Paulo-SP (Brazil); Clemente, R. A. [Instituto de Fisica Gleb Wataghin, Universidade Estadual de Campinas, 13083-859 Campinas-SP (Brazil); Farengo, R. [Centro Atomico Bariloche and Instituto Balseiro, S. C. de Bariloche (8400), RN (Argentina)
Self-interstitial configurations in hcp Zr: a first principles analysis
Analysis of microstructure evolution in irradiated Zr and Zr alloys based on the modern radiation damage theory suggests some important features of self-interstitial atoms (SIAs). Alignment of vacancy loops and voids along basal planes requires anisotropic interstitial transport with a dominant contribution along the basal plane. Under neutron irradiation this can be explained by one-dimensional mobility of SIA clusters but experiments under electron irradiation indicate unambiguously that even the single SIA should exhibit anisotropic diffusion. No experimental information is available on SIA properties in Zr and the data obtained by ab initio calculations within the last decade reported stable SIA configurations that should provide essentially three-dimensional diffusion. To clarify this issue, an extensive investigation of SIAs in Zr has been performed from first principles using two different codes. It was demonstrated that simulation cell size, type of pseudopotential, the exchange-correlation functional, and the c/a ratio are crucially important for determining the properties of interstitials in hcp Zr. The most stable SIA configurations lie in the basal plane, which should lead to SIA diffusion mainly along basal planes. The results provide a confirmation of basic mechanisms for microstructural evolution under irradiation.
Samolyuk, German D [ORNL; Golubov, Stanislav I [ORNL; Osetskiy, Yury N [ORNL; Stoller, Roger E [ORNL
Holliday Triangle Hunter (HolT Hunter): Efficient Software for Identifying Low Strain DNA Triangular Configurations
Synthetic DNA nanostructures are typically held together primarily by Holliday junctions. One of the most basic types of structures possible to assemble with only DNA and Holliday junctions is the triangle. To date, however, only equilateral triangles have been assembled in this manner - primarily because it is difficult to figure out what configurations of Holliday triangles have low strain. Early attempts at identifying such configurations relied upon calculations that followed the strained helical paths of DNA. Those methods, however, were computationally expensive, and failed to find many of the possible solutions. I have developed a new approach to identifying Holliday triangles that is computationally faster, and finds well over 95% of the possible solutions. The new approach is based on splitting the problem into two parts. The first part involves figuring out all the different ways that three featureless rods of the appropriate length and diameter can weave over and under one another to form a triangle. The second part of the computation entails seeing whether double helical DNA backbones can fit into the shape dictated by the rods in such a manner that the strands can cross over from one domain to the other at the appropriate spots. Structures with low strain (that is, good fit between the rods and the helices) on all three edges are recorded as promising for assembly.
Sherman, W.B.
Optimization and analysis of LiH thermal energy storage device configurations for space power applications
Thermal energy storage (TES) can be used to reduce the area and mass of the heat rejection system for space-based sprint power systems. During the sprint mode power cycle, reject heat is placed into storage. The heat is then rejected to the ultimate sink over the much longer non-operational portion of the orbits, through a correspondingly smaller radiator. Preliminary analysis has shown significant weight advantage for the heat storage plus radiator concept over the radiator only concept. Thermal performance analysis and optimization of five heat sink TES configurations using LiH was completed. The configurations are: (a) LiH encapsulated spheres in the packed bed, (b) standard tube and shell arrangement with LiH on the tube side, (c) tube and shell with LiH on the shell side, (d) alternating concentric rings of LiH and heat transport fluid, and (e) parallel slabs of LiH. System performance was calculated for a wide range of parameters and included effects of prespecified internal voids, enhanced conductivity and internal fins.
Siman-Tov, M.; Williams, P.; Olszewski, M.
DTE Energy Technologies With Detroit Edison Co. and Kinectrics Inc.: Distributed Resources Aggregation Modeling and Field Configuration Testing
Summarizes the work of DTE Energy Technologies, Detroit Edison, and Kinectrics, under contract to DOE's Distribution and Interconnection R&D, to develop distributed resources aggregation modeling and field configuration testing.
Not Available
Design Configurations for a Very High Temperature Gas-Cooled Reactor Designed to Generate Electricity and Hydrogen
The High Temperature Gas-Cooled Reactor is being envisioned that will generate not just electricity, but also hydrogen to charge up fuel cells for cars, trucks and other mobile energy uses. INL engineers studied various heat-transfer working fluids�including helium and liquid salts�in seven different configurations. In computer simulations, serial configurations diverted some energy from the heated fluid flowing to the electric plant and hydrogen production plant. In anticipation of the design, development and procurement of an advanced power conversion system for HTGR, this study was initiated to identify the major design and technology options and their tradeoffs in the evaluation of power conversion system (PCS) coupled to hydrogen plant. In this study, we investigated a number of design configurations and performed thermal hydraulic analyses using various working fluids and various conditions (Oh, 2005). This paper includes a portion of thermal hydraulic results based on a direct cycle and a parallel intermediate heat exchanger (IHX) configuration option.
Conference preceedings
Microsoft Word - Configuring Workstations for use with the PARS II System.V3.0.doc
30/2010 30/2010 1 PROCEDURES 1.1 Introduction Most users will be comfortable with contacting their IT Helpdesk for completing the instructions below. However, If you have Admin rights on your workstation, and are comfortable with making configuration changes to it, you may follow these directions yourself. 1.2 Installation of Dekker, Ltd. ActiveX Control 1. Log onto the workstation to be configured using an ID/Password that can perform administrative functions on the workstation being configured (e.g. Install software, add Active-X controls). Note that administrative access is only required for initial workstation configuration, not ongoing operation of the PARS II application on the workstation. 2. Check hardware, software and network requirements as identified in section 2 below.
The Local Instability of Steady Astrophysical Flows with non Circular Streamlines with Application to Differentially Rotating Disks with Free Eccentricity
We carry out a general study of the stability of astrophysical flows that appear steady in a uniformly rotating frame. Such a flow might correspond to a stellar pulsation mode or an accretion disk with a free global distortion giving it finite eccentricity. We consider perturbations arbitrarily localized in the neighbourhood of unperturbed fluid streamlines.When conditions do not vary around them, perturbations take the form of oscillatory inertial or gravity modes. However, when conditions do vary so that a circulating fluid element is subject to periodic variations, parametric instability may occur. For nearly circular streamlines, the dense spectra associated with inertial or gravity modes ensure that resonance conditions can always be satisfied when twice the period of circulation round a streamline falls within. We apply our formalism to a differentially rotating disk for which the streamlines are Keplerian ellipses, with free eccentricity up to 0.7, which do not precess in an inertial frame. We show that for small $e,$ the instability involves parametric excitation of two modes with azimuthal mode number differing by unity in magnitude which have a period of twice the period of variation as viewed from a circulating unperturbed fluid element. Instability persists over a widening range of wave numbers with increasing growth rates for larger eccentricities. The nonlinear outcome is studied in a follow up paper which indicates development of small scale subsonic turbulence.
J. C. B. Papaloizou
Ionization of one- and three-dimensionally-oriented asymmetric-top molecules by intense circularly polarized femtosecond laser pulses
We present a combined experimental and theoretical study on strong-field ionization of a three-dimensionally-oriented asymmetric top molecule, benzonitrile (C{sub 7}H{sub 5}N), by circularly polarized, nonresonant femtosecond laser pulses. Prior to the interaction with the strong field, the molecules are quantum-state selected using a deflector and three-dimensionally (3D) aligned and oriented adiabatically using an elliptically polarized laser pulse in combination with a static electric field. A characteristic splitting in the molecular frame photoelectron momentum distribution reveals the position of the nodal planes of the molecular orbitals from which ionization occurs. The experimental results are supported by a theoretical tunneling model that includes and quantifies the splitting in the momentum distribution. The focus of the present article is to understand strong-field ionization from 3D-oriented asymmetric top molecules, in particular the suppression of electron emission in nodal planes of molecular orbitals. In the preceding article [Dimitrovski et al., Phys. Rev. A 83, 023405 (2011)] the focus is to understand the strong-field ionization of one-dimensionally-oriented polar molecules, in particular asymmetries in the emission direction of the photoelectrons.
Hansen, Jonas L. [Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C (Denmark); Holmegaard, Lotte; Kalhoej, Line; Kragh, Sofie Louise [Department of Chemistry, Aarhus University, DK-8000 Aarhus C (Denmark); Stapelfeldt, Henrik [Department of Chemistry, Aarhus University, DK-8000 Aarhus C (Denmark); Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C (Denmark); Filsinger, Frank; Meijer, Gerard; Kuepper, Jochen; Dimitrovski, Darko; Abu-samha, Mahmoud; Martiny, Christian Per Juul; Madsen, Lars Bojer [Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin (Germany); Lundbeck Foundation Theoretical Center for Quantum System Research, Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark)
Broadening and shifting of the methanol 119 {mu}m gain line of linear and circular polarization by collision with chiral molecules
Evidence of circular dichroism has been observed in the spectral properties of a gas of left-right symmetric molecules. This dichroism comes about as the result of collisions of the symmetric molecules with left-right asymmetric molecules introduced as a buffer gas. In this sense, the dichroism can be said to have been transferred from the chiral buffer molecules to the symmetric, non-chiral molecules of the background vapor. This transferred dichroism appears as broadening in the gain line of the symmetric molecule which is asymmetric with respect to the right or left handedness of a circularly polarized probe. The broadening of the 119 {mu}m line of the methanol molecule was observed using infrared-far infrared double resonance spectroscopy.
J.S. Bakos; G. Djotyan; Zsuzsa Soerlei; J. Szigeti; D. K. Mansfield; J. Sarkozi
3-93-Pt.2 3-93-Pt.2 November 1993 DOE STANDARD GUIDE FOR OPERATIONAL CONFIGURATION MANAGEMENT PROGRAM Including the Adjunct Programs of Design Reconstitution and Material Condition and Aging Management PART ll U.S. Department of Energy AREA CMAN Washington, D.C. 20585 DISTRIBUTION STATEMENT A: Approved for public release; distribution Is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (615) 576-8401. Available to the public from the National Technical Information Service, U.S. Department of Commerce, 5285 Port Royal Rd., Springfield, VA 22161. Order No. DE94005408 i CONTENTS FOREWORD .
A Comparison of Supercritical Carbon Dioxide Power Cycle Configurations with an Emphasis on CSP Applications (Presentation)
Recent research suggests that an emerging power cycle technology using supercritical carbon dioxide (s-CO2) operated in a closed-loop Brayton cycle offers the potential of equivalent or higher cycle efficiency versus supercritical or superheated steam cycles at temperatures relevant for CSP applications. Preliminary design-point modeling suggests that s-CO2 cycle configurations can be devised that have similar overall efficiency but different temperature and/or pressure characteristics. This paper employs a more detailed heat exchanger model than previous work to compare the recompression and partial cooling cycles, two cycles with high design-point efficiencies, and illustrates the potential advantages of the latter. Integration of the cycles into CSP systems is studied, with a focus on sensible heat thermal storage and direct s-CO2 receivers. Results show the partial cooling cycle may offer a larger temperature difference across the primary heat exchanger, thereby potentially reducing heat exchanger cost and improving CSP receiver efficiency.
Neises, T.; Turchi, C.
Special ESP configurations designed to test and produce Yemen oil field. [Electric-Submersible Pump
Innovative electric-submersible-pump (ESP) configurations were used in the exploration phase of a Yemen oil field discovered by Canadian Occidental Petroleum Ltd. Because of subnormal reservoir pressure, CanOxy developed the field with ESPs and had to install surface components that could operate at the high, 130 F., ambient temperatures common in Yemen. The field is in a remote area that has seen very little development. The reservoirs produce a medium-to-heavy crude with a low gas/oil ratio, typically less than 20 scf/bbl. Problems faced in evaluating the field included drilling through unconsolidated sands with high flow capacity and subnormal reservoir pressure. CanOxy had to develop the technology to test the wells during the exploration phase, and intends to use new, or at least uncommon technology, for producing the wells. The paper describes testing the wells, the electric generators and variable speed drives, and the use of these pumps on production wells.
Wilkie, D.I. (Canadian Occidental Petroleum Ltd., Calgary, Alberta (Canada))
Configuration and performance of the indirect-fired fuel cell bottomed turbine cycle
The natural gas, indirect-fired fuel cell bottomed turbine cycle (NG-IFFC) is introduced as a novel power plant system for the distributed power and on-site markets in the 20--200 megawatt (MW) size range. The novel indirect-fired carbonate fuel cell bottomed turbine cycle (NG-IFCFC) power plant system configures the ambient pressure carbonate fuel cell with a gas turbine, air compressor, combustor, and ceramic heat exchanger. Performance calculations from ASPEN simulations present material and energy balances with expected power output. The results indicate efficiencies and heat rates for the NG-IFCFC are comparable to conventionally bottomed carbonate fuel cell steam bottomed cycles, but with smaller and less expensive components.
Micheli, P.L.; Williams, M.C.; Parsons, E.L. Jr.
Stochastic Ion Heating in a Field-reversed Configuration Geometry by Rotating Magnetic Fields
Ion heating by application of rotating magnetic fields (RMF) to a prolate field-reversed configuration(FRC) is explored by analytical and numerical techniques. For odd-parity RMF (RMFo), perturbation analysis shows ions in figure-8 orbits gain energy at resonances of the RMFo frequency, ?R, with the figure-8 orbital frequency, ?. Since figure-8 orbits tend to gain the most energy from the RMF and are unlikely to escape in the cusp region (where most losses occur), they are optimal candidates for rapid stochastic heating, as compared to cyclotron and betatron orbits. Comparisons are made between heating caused by even- and odd-parity RMFs and between heating in currently operating and in reactor-scale FRC devices.
S.A. Cohen, A.S. Landsman, and A.H. Glasser
Spherical shock-ignition experiments with the 40 + 20-beam configuration on OMEGA
Spherical shock-ignition experiments on OMEGA used a novel beam configuration that separates low-intensity compression beams and high-intensity spike beams. Significant improvements in the performance of plastic-shell, D{sub 2} implosions were observed with repointed beams. The analysis of the coupling of the high-intensity spike beam energy into the imploding capsule indicates that absorbed hot-electron energy contributes to the coupling. The backscattering of laser energy was measured to reach up to 36% at single-beam intensities of {approx}8 Multiplication-Sign 10{sup 15} W/cm{sup 2}. Hard x-ray measurements revealed a relatively low hot-electron temperature of {approx}30 keV independent of intensity and timing. At the highest intensity, stimulated Brillouin scattering occurs near and above the quarter-critical density and the two-plasmon-decay instability is suppressed.
Theobald, W.; Anderson, K. S.; Delettrez, J. A.; Glebov, V. Yu.; Gotchev, O. V.; Hohenberger, M.; Hu, S. X.; Marshall, F. J.; Sangster, T. C.; Seka, W.; Stoeckl, C.; Yaakobi, B. [Laboratory for Laser Energetics and Fusion Science Center, University of Rochester, Rochester, New York 14623 (United States); Nora, R.; Betti, R.; Meyerhofer, D. D. [Laboratory for Laser Energetics and Fusion Science Center, University of Rochester, Rochester, New York 14623 (United States); Department of Mechanical Engineering and Physics at the University of Rochester, Rochester, New York 14623 (United States); Lafon, M. [Laboratory for Laser Energetics and Fusion Science Center, University of Rochester, Rochester, New York 14623 (United States); University of Bordeaux, CEA, CNRS, CELIA (Centre Lasers Intenses et Applications), F-33400 Talence (France); Casner, A. [CEA, DAM, DIF, F-91297 Arpajon (France); Ribeyre, X.; Schurtz, G. [University of Bordeaux, CEA, CNRS, CELIA (Centre Lasers Intenses et Applications), F-33400 Talence (France); Frenje, J. A. [Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); and others
Field-Reversed Configuration Power Plant Critical-Issue Scoping Study
A team from the Universities of Wisconsin, Washington, and Illinois performed an engineering scoping study of critical issues for field-reversed configuration (FRC) power plants. The key tasks for this research were (1) systems analysis for deuterium-tritium (D-T) FRC fusion power plants, and (2) conceptual design of the blanket and shield module for an FRC fusion core. For the engineering conceptual design of the fusion core, the project team focused on intermediate-term technology. For example, one decision was to use steele structure. The FRC systems analysis led to a fusion power plant with attractive features including modest size, cylindrical symmetry, good thermal efficiency (52%), relatively easy maintenance, and a high ratio of electric power to fusion core mass, indicating that it would have favorable economics.
Santarius, J. F.; Mogahed, E. A.; Emmert, G. A.; Khater, H. Y.; Nguyen, C. N.; Ryzhkov, S. V.; Stubna, M. D.
Geothermal Casimir phenomena for the sphere-plate and cylinder-plate configurations
We investigate the nontrivial interplay between geometry and temperature in the Casimir effect for the sphere-plate and cylinder-plate configurations. At low temperature, the thermal contribution to the Casimir force is dominated by this interplay, implying that standard approximation techniques such as the PFA are inapplicable even in the limit of small surface separation. Thermal fluctuations on scales of the thermal wavelength lead to a delocalization of the thermal force density at low temperatures. As a consequence, the temperature dependence strongly differs from naive expectations. Most prominently, thermal forces can develop non-monotonic behavior below a critical temperature. We perform a comprehensive study of such geothermal phenomena in these Casimir geometries, using analytical and numerical worldline techniques for Dirichlet scalar fluctuations.
Alexej Weber; Holger Gies
Weber, Alexej
High Level Trigger Configuration and Handling of Trigger Tables in the CMS Filter Farm
The CMS experiment at the CERN Large Hadron Collider is currently being commissioned and is scheduled to collect the first pp collision data in 2008. CMS features a two-level trigger system. The Level-1 trigger, based on custom hardware, is designed to reduce the collision rate of 40 MHz to approximately 100 kHz. Data for events accepted by the Level-1 trigger are read out and assembled by an Event Builder. The High Level Trigger (HLT) employs a set of sophisticated software algorithms, to analyze the complete event information, and further reduce the accepted event rate for permanent storage and analysis. This paper describes the design and implementation of the HLT Configuration Management system. First experiences with commissioning of the HLT system are also reported.
Bauer, G; Behrens, U; Boyer, V; Branson, J; Brett, A; Cano, E; Carboni, A; Ciganek, M; Cittolin, S; O'dell, V; Erhan, S; Gigi, D; Glege, F; Gomez-Reino, R; Gulmini, M; Gutleber, J; Hollar, J; Lange, D; Kim, J C; Klute, M; Lipeles, E; Perez, J L; Maron, G; Meijers, F; Meschi, E; Moser, R; Mlot, E G; Murray, S; Oh, A; Orsini, L; Paus, C; Petrucci, A; Pieri, M; Pollet, L; Racz, A; Sakulin, H; Sani, M; Schieferdecker, P; Schwick, C; Sumorok, K; Suzuki, I; Tsirigkas, D; Varela, J
Field-Reversed Configuration Formation Scheme Utilizing a Spheromak and Solenoid Induction
A new field-reversed configuration (FRC) formation technique is described, where a spheromak transitions to a FRC with inductive current drive. The transition is accomplished only in argon and krypton plasmas, where low-n kink modes are suppressed; spheromaks with a lighter majority species, such as neon and helium, either display a terminal tilt-mode, or an n=2 kink instability, both resulting in discharge termination. The stability of argon and krypton plasmas through the transition is attributed to the rapid magnetic diffusion of the currents that drive the kink-instability. The decay of helicity during the transition is consistent with that expected from resistivity. This observation indicates a new scheme to form a FRC plasma, provided stability to low-n modes is maintained, as well as a unique situation where the FRC is a preferred state.
S.P. Gerhardt, E.V. Belova, M. Yamada, H. Ji, Y. Ren, B. McGeehan, and M. Inomoto
Modulated active charge exchange fast ion diagnostic for the C-2 field-reversed configuration experiment
A diagnostic technique for measuring the fast-ion energy distribution in a field-reversed configuration plasma was developed and tested on the C-2 experiment. A deuterium neutral beam modulated at 22 kHz is injected into the plasma, producing a localized charge-exchange target for the confined fast protons. The escaping fast neutrals are detected by a neutral particle analyzer. The target beam transverse size ({approx}15 cm) defines the spatial resolution of the method. The equivalent current density of the target beam is {density ({approx}6 Multiplication-Sign 10{sup 9} cm{sup -3}) that highly exceeds the background neutral density in the core of C-2. The deuterium fast-ions due to the target beam (E{approx}27 keV), are not confined in C-2 and thus make a negligible contribution to the measured signals.
Korepanov, S.; Smirnov, A.; Clary, R.; Dettrick, S. [Tri Alpha Energy, Inc., Rancho Santa Margarita, California 92688 (United States); Deichuli, P.; Kondakov, A.; Murakhtin, S. [Budker Institute of Nuclear Physics, Novosibirsk (Russian Federation)
The effect of anisotropic heat transport on magnetic islands in 3-D configurations
An analytic theory of nonlinear pressure-induced magnetic island formation using a boundary layer analysis is presented. This theory extends previous work by including the effects of finite parallel heat transport and is applicable to general three dimensional magnetic configurations. In this work, particular attention is paid to the role of finite parallel heat conduction in the context of pressure-induced island physics. It is found that localized currents that require self-consistent deformation of the pressure profile, such as resistive interchange and bootstrap currents, are attenuated by finite parallel heat conduction when the magnetic islands are sufficiently small. However, these anisotropic effects do not change saturated island widths caused by Pfirsch-Schlueter current effects. Implications for finite pressure-induced island healing are discussed.
Schlutt, M. G.; Hegna, C. C. [University of Wisconsin-Madison, 1500 Engineering Drive, 510 ERB, Madison, Wisconsin 53706 (United States)
Secure Remote Control And Configuration Of The Fpx Platform In Gigabit Ethernet Environment
SECURE REMOTE CONTROL AND CONFIGURATION OF THE FPX PLATFORM IN GIGABIT ETHERNET ENVIRONMENT by Haoyu Song ADVISOR: Professor John W. Lockwood August, 2003 Saint Louis, Missouri Because of its flexibility and high performance, reconfigurable logic functions implemented on the Field-programable Port Extender (FPX ) are well suited for implementing network processing such as packet classification, filtering and intrusion detection functions. This project focuses on two key aspects of the FPX system. One is providing a Gigabit Ethernet interface by designing logic for a FPGA which is located on a line card. Address Resolution Protocol (ARP) packets are handled in hardware and Ethernet frames are processed and transformed into cells suitable for standard FPX application.
Saint Louis Missouri; Haoyu Song; Haoyu Song; Advisor Professor; John W. Lockwood
Lithium isotopes within the ab intio no-core full configuration approach
We perform no-core full configuration calculations for the Lithium isotopes, 6Li, 7Li, and 8Li with the realistic nucleon-nucleon interaction JISP16. We obtain a set of observables, such as spectra, radii, multipole moments, transition rates, etc., and compare with experiment where available. We also present one-body density distributions for selected states. Convergence properties of these density distributions shed light on the convergence properties of one-body observables. We obtain underbinding by 0.5 MeV, 0.7 MeV, and 1.0 MeV for 6Li, 7Li, 8Li respectively. Magnetic moments are well-converged and agree with experiment to within 20%.
Chase Cockrell; James P. Vary; Pieter Maris
Hybrid Sulfur cycle is gaining popularity as a possible means for massive production of hydrogen from nuclear energy. Several different ways of carrying out the SO{sub 2}-depolarized electrolysis step are being pursued by a number of researchers. These alternatives are evaluated with complete flowsheet simulations and on a common design basis using Aspen Plus{trademark}. Sensitivity analyses are performed to assess the performance potential of each configuration, and the flowsheets are optimized for energy recovery. Net thermal efficiencies are calculated for the best set of operating conditions for each flowsheet and the results compared. This will help focus attention on the most promising electrolysis alternatives. The sensitivity analyses should also help identify those features that offer the greatest potential for improvement.
Gorensek, M
Final Report for grant DE-FG02-06ER54888, "Simulation of Beam-Electron Cloud Interactions in Circular Accelerators Using Plasma Models"
The primary goal of this collaborative proposal was to modify the code QuickPIC and apply it to study the long-time stability of beam propagation in low density electron clouds present in circular accelerators. The UCLA contribution to this collaborative proposal was in supporting the development of the pipelining scheme for the QuickPIC code, which extended the parallel scaling of this code by two orders of magnitude.
Decyk, Viktor K.
The Saltstone Production Facility has a 10-inch Readco-Kurimoto continuous mixer that mixes the premix dry feeds and low-level waste salt solution to make fresh (uncured) saltstone. Inspection of the mixer in January 2013 showed significant wear on the third, fourth and fifth paddle pairs after the conveying augers. A 2-inch Readco-Kurimoto continuous mixer was used to test alternate paddle configurations for use in the 10-inch mixer to decrease the wear rate on the paddles. Two wear tests were conducted to investigate a method of reducing wear on the mixer paddles. The first test (wear test 2a) had a paddle configuration similar to the currently installed 10-inch mixer in the SPF. This test established baseline wear. The second test (wear test 2b) had a reconfigured paddle arrangement that replaced the flat paddles with helical paddles for paddle pairs 2 ? 6 and aligned paddle pair 1 with the augers. The intent of the reconfiguration was to more effectively convey the partially wetted dry feeds through the transition region and into the liquid feed where paddle wear is reduced due to dry feeds and salt solution being mixed at the intended water to premix ratio. The design of the helical paddles provides conveyance through the transition region to the liquid feed inlet. The alignment with the auger is aimed to provide a smoother transition (minimizing the discontinuity between the auger and paddle pair 1) into the downstream paddles. A soft metal with low wear resistance (6000 series aluminum) was used for the wear testing paddles to determine wear patterns while minimizing run time and maximizing wear rate. For the two paddle configurations tested using the scaled 2-inch Readco-Kurimoto continuous mixer, with the first six paddles after the augers replaced by the wear paddles and the remaining paddles were stainless steel. Since the 10-inch SPF mixer is designed with the liquid inlet centered over paddle pairs 5 and 6, the scaled 2-inch mixer was configured the same way. The wear rate from wear test 2a was approximately double the wear rate from wear test 2b for paddle pairs 4 and 5. For both configurations, there was little or no wear on paddle pairs 1, 2, 3 and 6 based on mass change, indicating that the un-wetted and fully wetted premix materials cause less wear than the partially wetted premix. Additionally, inspection of the wear surface of the paddles showed more deformation on the flat paddles than the helical paddles which was consistent with the wear rates. Aligning of the auger discharge flight with paddle pair 1 resulted in a lower wear rate paddle pair 1 rather than having them misaligned with the feed augers. During the paddle wear tests, polishing wear was observed on the inside barrel of the mixer. The polishing wear is evident on the upper housing clamshell and the lower housing clamshell primarily at paddle pairs 4 and 5, which is the transition region of the mixer. Wear on the mixer barrel increases the space between the paddles and the barrel, resulting in increased grout build up on the barrel. Since the mixer barrel cannot be reconfigured or replaced in the SPF, the method for mitigating wear on the barrel is to move the more viscous grout through the transition region as quickly as possible. In addition, the location of the liquid inlet does not allow for sufficient cleaning of the mixer since residual grout remains on paddle pairs 1 ? 4. As the paddles continue to wear and the self-cleaning capability of the paddles is lost, the lack of sufficient flushing would aid in grout build up between the barrel and the paddles which could eventually lead to decreased throughput capacity of the dry feeds. Changing the paddle configuration from flat to helical resulted in no change to the rheological properties of the grout mixture. Both tests produced a grout that is within the processing range of the SPF. Based on the results of this testing, it is recommended for the currently installed SPF mixer that paddle pairs 1 through 6 be helical rather than flat, with the paddle pair 1 aligned with the feed au
Reigel, M.; Fowley, M.
The delivery of organic matter to the primitive Earth via comets and meteorites has long been hypothesized to be an important source for prebiotic compounds such as amino acids or their chemical precursors that contributed to the development of prebiotic chemistry leading, on Earth, to the emergence of life. Photochemistry of inter/circumstellar ices around protostellar objects is a potential process leading to complex organic species, although difficult to establish from limited infrared observations only. Here we report the first abiotic cosmic ice simulation experiments that produce species with enantiomeric excesses (e.e.'s). Circularly polarized ultraviolet light (UV-CPL) from a synchrotron source induces asymmetric photochemistry on initially achiral inter/circumstellar ice analogs. Enantioselective multidimensional gas chromatography measurements show significant e.e.'s of up to 1.34% for ({sup 13}C)-alanine, for which the signs and absolute values are related to the helicity and number of CPL photons per deposited molecule. This result, directly comparable with some L excesses measured in meteorites, supports a scenario in which exogenous delivery of organics displaying a slight L excess, produced in an extraterrestrial environment by an asymmetric astrophysical process, is at the origin of biomolecular asymmetry on Earth. As a consequence, a fraction of the meteoritic organic material consisting of non-racemic compounds may well have been formed outside the solar system. Finally, following this hypothesis, we support the idea that the protosolar nebula has indeed been formed in a region of massive star formation, regions where UV-CPL of the same helicity is actually observed over large spatial areas.
De Marcellus, Pierre; Nuevo, Michel; Danger, Gregoire; Deboffle, Dominique; Le Sergeant d'Hendecourt, Louis [Univ Paris-Sud, 'Astrochimie et Origines', Institut d'Astrophysique Spatiale, UMR 8617, F-91405 Orsay (France); Meinert, Cornelia; Filippi, Jean-Jacques; Meierhenrich, Uwe J. [Laboratoire de Chimie des Molecules Bioactives et des Aromes, UMR 6001, Universite de Nice-Sophia Antipolis, F-06108 Nice (France); Nahon, Laurent, E-mail: firstname.lastname@example.com, E-mail: email@example.com [Synchrotron SOLEIL, F-91192 Gif-sur-Yvette (France)
Light Water Reactor Sustainability Program Technical Basis Guide Describing How to Perform Safety Margin Configuration Risk Management
The INL has carried out a demonstration of the RISMC approach for the purpose of configuration risk management. We have shown how improved accuracy and realism can be achieved by simulating changes in risk � as a function of different configurations � in order to determine safety margins as the plant is modified. We described the various technical issues that play a role in these configuration-based calculations with the intent that future applications can take advantage of the analysis benefits while avoiding some of the technical pitfalls that are found for these types of calculations. Specific recommendations have been provided on a variety of topics aimed at improving the safety margin analysis and strengthening the technical basis behind the analysis process.
Curtis Smith; James Knudsen; Bentley Harwood
The most compact scission configuration of fragments from low energy fission of U 234 and U 236
Using a time of flight technique, the maximal values of kinetic energy as a function of primary mass of fragments from low energy fission of U 234 and U 236 were measured by Signarbieux et al. From calculations of scission configurations, one can conclude that, for those two fissioning systems, the maximal value of total kinetic energy corresponding to fragmentations (Mo 104, Sn 130)) and (Mo 106, Sn 130), respectively, are equal to the available energies, and their scission configurations are composed by a spherical heavy fragment and a prolate light fragment both in their ground state.
Modesto Montoya
A second-quantized red herring in full configuration-interaction Monte Carlo
Full configuration-interaction quantum Monte Carlo (FCI-QMC) is a Monte Carlo method that allows for exact solution of the ground state of fermionic Hamiltonians (albeit at exponential cost). FCI-QMC involves stochastic projection to the ground state, working in a basis of second- quantized determinants. While a Fermi sign problem still exists within FCI-QMC, it has been suggested that even without annihilation the sign problem is fundamentally distinct from that of more standard techniques such as diffusion Monte Carlo, as a result of working in determinant space. Furthermore, it is widely believed that this distinction is at least partially responsible for the success of FCI-QMC in mitigating the sign problem. In this paper, we show that second quantization is a red herring; the sign problem of FCI-QMC comes from the conventional instability to a bosonic ground state, and in fact FCI-QMC without annihilation can be equated step-by-step to a first-quantized algorithm where anti-symmetry comes only from initi...
Kolodrubetz, Michael
Turbine cooling configuration selection and design optimization for the high-reliability gas turbine. Final report
The potential of advanced turbine convectively air-cooled concepts for application to the Department of Energy/Electric Power Research Institute (EPRI) Advanced Liquid/Gas-Fueled Engine Program was investigated. Cooling of turbine airfoils is critical technology and significant advances in cooling technology will permit higher efficiency coal-base-fuel gas turbine energy systems. Two new airfoil construction techniques, bonded and wafer, were the principal designs considered. In the bonded construction, two airfoil sections having intricate internal cooling configurations are bonded together to form a complete blade or vane. In the wafer construction, a larger number (50 or more) of wafers having intricate cooling flow passages are bonded together to form a complete blade or vane. Of these two construction techniques, the bonded airfoil is considered to be lower in risk and closer to production readiness. Bonded airfoils are being used in aircraft engines. A variety of industrial materials were evaluated for the turbine airfoils. A columnar grain nickel alloy was selected on the basis of strength and corrosion resistance. Also, cost of electricity and reliability were considered in the final concept evaluation. The bonded airfoil design yielded a 3.5% reduction in cost-of-electricity relative to a baseline Reliable Engine design. A significant conclusion of this study was that the bonded airfoil convectively air-cooled design offers potential for growth to turbine inlet temperatures above 2600/sup 0/F with reasonable development risk.
Smith, M J; Suo, M
Visualizing multiphase flow and trapped fluid configurations in a model three-dimensional porous medium
We report an approach to fully visualize the flow of two immiscible fluids through a model three-dimensional (3D) porous medium at pore-scale resolution. Using confocal microscopy, we directly image the drainage of the medium by the non-wetting oil and subsequent imbibition by the wetting fluid. During imbibition, the wetting fluid pinches off threads of oil in the narrow crevices of the medium, forming disconnected oil ganglia. Some of these ganglia remain trapped within the medium. By resolving the full 3D structure of the trapped ganglia, we show that the typical ganglion size, and the total amount of residual oil, decreases as the capillary number Ca increases; this behavior reflects the competition between the viscous pressure in the wetting fluid and the capillary pressure required to force oil through the pores of the medium. This work thus shows how pore-scale fluid dynamics influence the trapped fluid configurations in multiphase flow through 3D porous media.
Krummel, Amber T; M�nster, Stefan; Weitz, David A; 10.1002/aic.14005
Facility Configuration Study of the High Temperature Gas-Cooled Reactor Component Test Facility
A test facility, referred to as the High Temperature Gas-Cooled Reactor Component Test Facility or CTF, will be sited at Idaho National Laboratory for the purposes of supporting development of high temperature gas thermal-hydraulic technologies (helium, helium-Nitrogen, CO2, etc.) as applied in heat transport and heat transfer applications in High Temperature Gas-Cooled Reactors. Such applications include, but are not limited to: primary coolant; secondary coolant; intermediate, secondary, and tertiary heat transfer; and demonstration of processes requiring high temperatures such as hydrogen production. The facility will initially support completion of the Next Generation Nuclear Plant. It will secondarily be open for use by the full range of suppliers, end-users, facilitators, government laboratories, and others in the domestic and international community supporting the development and application of High Temperature Gas-Cooled Reactor technology. This pre-conceptual facility configuration study, which forms the basis for a cost estimate to support CTF scoping and planning, accomplishes the following objectives: � Identifies pre-conceptual design requirements � Develops test loop equipment schematics and layout � Identifies space allocations for each of the facility functions, as required � Develops a pre-conceptual site layout including transportation, parking and support structures, and railway systems � Identifies pre-conceptual utility and support system needs � Establishes pre-conceptual electrical one-line drawings and schedule for development of power needs.
S. L. Austad; L. E. Guillen; D. S. Ferguson; B. L. Blakely; D. M. Pace; D. Lopez; J. D. Zolynski; B. L. Cowley; V. J. Balls; E.A. Harvego, P.E.; C.W. McKnight, P.E.; R.S. Stewart; B.D. Christensen
Risk and Work Configuration Management as a Function of Integrated Safety Management
National Security Technologies, LLC (NSTec), has established a work management program and corresponding electronic Facilities and Operations Management Information System (e-FOM) to implement Integrated Safety Management (ISM). The management of work scopes, the identification of hazards, and the establishment of implementing controls are reviewed and approved through electronic signatures. Through the execution of the program and the implementation of the electronic system, NSTec staff work within controls and utilize feedback and improvement process. The Integrated Work Control Manual further implements the five functions of ISM at the Activity level. By adding the Risk and Work Configuration Management program, NSTec establishes risk acceptance (business and physical) for liabilities within the performance direction and work management processes. Requirements, roles, and responsibilities are specifically identified in the program while e-FOM provides the interface and establishes the flowdown from the Safety Chain to work and facilities management processes to company work-related directives, and finally to Subject Matter Expert concurrence. The Program establishes, within the defined management structure, management levels for risk identification, risk mitigation (controls), and risk acceptance (business and physical) within the Safety Chain of Responsibility. The Program also implements Integrated Safeguards and Security Management within the NSTec Safety Chain of Responsibility. Once all information has been entered into e-FOM, approved, and captured as data, the information becomes searchable and sortable by hazard, location, organization, mitigating controls, etc.
Lana Buehrer, Michele Kelly, Fran Lemieux, Fred Williams
Mixed Waste Treatment Cost Analysis for a Range of GeoMelt Vitrification Process Configurations
GeoMelt is a batch vitrification process used for contaminated site remediation and waste treatment. GeoMelt can be applied in several different configurations ranging from deep subsurface in situ treatment to aboveground batch plants. The process has been successfully used to treat a wide range of contaminated wastes and debris including: mixed low-level radioactive wastes; mixed transuranic wastes; polychlorinated biphenyls; pesticides; dioxins; and a range of heavy metals. Hypothetical cost estimates for the treatment of mixed low-level radioactive waste were prepared for the GeoMelt subsurface planar and in-container vitrification methods. The subsurface planar method involves in situ treatment and the in-container vitrification method involves treatment in an aboveground batch plant. The projected costs for the subsurface planar method range from $355-$461 per ton. These costs equate to 18-20 cents per pound. The projected cost for the in-container method is $1585 per ton. This cost equates to 80 cents per pound. These treatment costs are ten or more times lower than the treatment costs for alternative mixed waste treatment technologies according to a 1996 study by the US Department of Energy.
Thompson, L. E.
Tomographic imaging system for measuring impurity line emission in a field-reversed configuration
A 16 chord optical tomography system has been developed and implemented in the flux coil generated-field reversed configuration (FRC). The chords are arranged in two fans of eight, which cover {approx}35% of the vessel area at the midplane. Each illuminate separate photomultiplier tubes (PMTs) which are fitted with narrow band-pass filters. In this case, filters are centered at 434.8 nm to measure emission from singly ionized argon. PMT crosstalk is negligible. Background noise due to electron radiation and H{sub {gamma}} line radiation is <10% of argon emission. The spatial resolution of the reconstruction is 1.5 cm. Argon is introduced using a puff valve and tube designed to impart the gas into the system as the FRC is forming. Reconstruction of experimental data results in time-dependent, 2D emissivity profiles of the impurity ions. Analysis of these data show radial, cross-field diffusion to be in the range of 10-10{sup 3} m{sup 2}/s during FRC equilibrium.
Roche, T.; Heidbrink, W. W.; McWilliams, R. [University of California, Irvine, California 92697 (United States); Bolte, N.; Garate, E.; Wessel, F. [University of California, Irvine, California 92697 (United States); Tri Alpha Energy, Inc., Rancho Santa Margarita, California 92688 (United States)
Amber T. Krummel; Sujit S. Datta; Stefan M�nster; David A. Weitz
Major electron events and coronal magnetic configurations of the related solar active regions
A statistical survey of 26 major electron events during the period 2002 February through the end of solar cycle 23 is presented. We have obtained electron solar onset times and the peak flux spectra for each event by fitting to a powerlaw spectrum truncated by an exponential high-energy tail. We also derived the coronal magnetic configurations of the related solar active regions (ARs) from the potential-field source-surface model. It is found that (1) 10 of the 11 well-connected open field-line events are prompt events whose solar onset times coincide with the maxima of flare emission and 13 of the 14 closed field-line events are delayed events. (2) A not-wellconnected open field-line event and one of the closed field-line events are prompt events, they are both associated with large-scale coronal disturbances or dimming. (3)An averaged harder spectrum is found in open field-line events compared with the closed ones. Specifically, the averaged spectral index is of 1.6 +/- 0.3 in open field-line events and of ...
Li, C; Matthews, S A; Dai, Y; Tang, Y H
Configuration-interaction Monte Carlo method and its application to the trapped unitary Fermi gas
We develop a quantum Monte Carlo method to estimate the ground-state energy of a fermionic many-particle system in the configuration-interaction shell model approach. The fermionic sign problem is circumvented by using a guiding wave function in Fock space. The method provides an upper bound on the ground-state energy whose tightness depends on the choice of the guiding wave function. We argue that the antisymmetric geminal product class of wave functions is a good choice for guiding wave functions. We demonstrate our method for the trapped two-species fermionic cold atom system in the unitary regime of infinite scattering length using the particle-number projected Hartree-Fock-Bogoliubov wave function as the guiding wave function. We estimate the ground-state energy and energy-staggering pairing gap as a function of the number of particles. Our results compare favorably with exact numerical diagonalization results and with previous coordinate-space Monte Carlo calculations.
Mukherjee, Abhishek
Abhishek Mukherjee; Y. Alhassid
Relations between three-point configuration space shear and convergence statistics
With the growing interest in and ability of using weak lensing studies to probe the non-Gaussian properties of the matter density field, there is an increasing need for the study of suitable statistical measures, e.g. shear three-point statistics. In this paper we establish the relations between the three-point configuration space shear and convergence statistics, which are an important missing link between different weak lensing three-point statistics and provide an alternative way of relating observation and theory. The method we use also allows us to derive the relations between other two- and three-point correlation functions. We show the consistency of the relations obtained with already established results and demonstrate how they can be evaluated numerically. As a direct application, we use these relations to formulate the condition for E/B-mode decomposition of lensing three-point statistics, which is the basis for constructing new three-point statistics which allow for exact E/B-mode separation. Our work applies also to other two-dimensional polarization fields such as that of the Cosmic Microwave Background.
X. Shi; P. Schneider; B. Joachimi
Dye laser amplifier including an improved window configuration for its dye beam
A dye laser amplifier in which a continuously replenished supply of dye is excited with a first light beam in order to amplify the intensity of a second different light beam passing therethrough is disclosed herein. This amplifier includes a cell though which a continuous stream of the dye is caused to pass, and means for directing the first beam into the cell while the second beam is directed into and through the same cell. There is also disclosed herein a specific improvement to this amplifier which resides in the use of a pair of particularly configured windows through which the second beam passes along fixed paths as the second beam enters and exits the dye cell. Each of these windows has a relatively thick main section which is substantially larger in dimensions transverse to its beam path than the cross section of the second beam itself, whereby to add structural integrity to the overall window. At the same time, the latter includes a second section which is disposed entirely within the confines of the main section and through which the second beam is intended to pass in its entirety. This second section is made substantially thinner than the main section in order to reduce optical distortion as the second beam passes therethrough.
O' Neil, Richard W. (Pleasanton, CA); Davin, James M. (Livermore, CA)
A dye laser amplifier in which a continuously replenished supply of dye is excited with a first light beam in order to amplify the intensity of a second different light beam passing therethrough is disclosed herein. This amplifier includes a cell though which a continuous stream of the dye is caused to pass, and means for directing the first beam into the cell while the second beam is directed into and through the same cell. There is also disclosed herein a specific improvement to this amplifier which resides in the use of a pair of particularly configured windows through which the second beam passes along fixed paths as the second beam enters and exits the dye cell. Each of these windows has a relatively thick main section which is substantially larger in dimensions transverse to its beam path than the cross section of the second beam itself, whereby to add structural integrity to the overall window. At the same time, the latter includes a second section which is disposed entirely within the confines of the main section and through which the second beam is intended to pass in its entirety. This second section is made substantially thinner than the main section in order to reduce optical distortion as the second beam passes therethrough. 4 figs.
O' Neil, R.W.; Davin, J.M.
The Star, A Dynamically Configured Dataflow Director for Real Time Control
The CEBAF accelerator is controlled by an automated system consisting of 50 computers connected to machine hardware and another 20 to 30 computers used for displaying machine data. The control system communication software must manage the inter-machine communication of those computers. Each of the different segments of software that make up the machine control system is treated as data sources and data sinks, with a single process mediating the transfer of all data between any data source/data sink pair. The mediating process is called the Star. This dynamically configured process keeps track of all available machine data posted by data sources and of all data requested by data sinks. Data transmission rates through the Star are kept low by sending only data that is requested by other control software, and then only when the value of the data changes. The system is entirely response-driven, with the Star process taking action only at the request of either a data source or a sink. The software for the communication is written using standard C code and TCP/IP sockets, making the communication platform independent.
Matt Bickley; J. Kewisch
CAVEMAN: Configuration And VErsion MANagement. User`s guide, v2.1.2
The mission of the CAVEMAN project is to provide the tools for large code systems so that those who work on them can perform source control and configuration control on UNIX-based file servers, rather than the LC Crays. An outside product called cvs has been chosen as the underlying source control system. The initials stand for {open_quotes}Concurrent Versions System{close_quotes}. It is a freeware program that runs on most UNIX stations. To quote from the cvs man page: {open_quotes}cvs is a front end to the rcs revision control system which extends the notion of revision control from a collection of files in a single directory to a hierarchical collection of directories consisting of revision controlled files. These directories and files can be combined together to form a software release. cvs provides the functions necessary to manage these software releases and to control the concurrent editing of source files among multiple software developers.{close_quotes} While cvs may be run directly, there are several tasks in the LLNL environment that it seemed either safer or easier to automate. CAVEMAN provides the needed functionality, generally in the form of wrappers to cvs.
Dyer, K.M.
Vicious and virtuous circles of offshoring attitudes and relational behaviours. A configurational study of German IT developers
Prior research has shown that the success of offshoring is affected by relational behaviours of the employees involved in an offshoring collaboration. However, hardly anything is known about the attitudes that onshore colleagues hold towards offshoring, ... Keywords: IT, attitudes, configuration, offshoring, transnational, vicious circles
Angelika Zimmermann; Katharina Raab; Livio Zanotelli
Effects of blade configurations on flow distribution and power output of a Zephyr vertical axis wind turbine
Numerical simulations with FLUENT software were conducted to investigate the fluid flow through a novel vertical axis wind turbine (VAWT). Simulation of flow through the turbine rotor was performed with the aim of predicting the performance characteristics ... Keywords: blade configuration, power output, rotor, simulation, vertical axis wind turbine
J. O. Ajedegba; G. F. Naterer; M. A. Rosen; E. Tsang
Abstract--Power system currents and voltages magnitudes are time variant due to continual changes in system configuration
corresponding matrix form. Another possible application is the forecasting of the electrical signals behavior changes in system configuration and load conditions. This paper deals with the statistical description of measured electrical signals. A matrix representation is chosen in order to preserve the information about
An exact solution for finding minimum recombinant haplotype configurations on pedigrees with missing data by integer linear programming
We study the problem of reconstructing haplotype configurations from genotypes on pedigree data with missing alleles under the Mendelian law of inheritance and the minimum recombination principle, which is important for the construction of haplotype ... Keywords: branch-and-bound algorithm, haplotyping, integer linear programming, missing data imputation, pedigree analysis, recombination
Jing Li; Tao Jiang
Preparation of the spacer for narrow electrode gap configuration in ionization-based gas sensor
Carbon nanotubes (CNTs) have started to be developed as the sensing element for ionization-based gas sensors due to the demand for improved sensitivity, selectivity, stability and other sensing properties beyond what can be offered by the conventional ones. Although these limitations have been overcome, the problems still remain with the conventional ionization-based gas sensors