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Office of Scientific and Technical Information
Cargo revenue management for space logistics
E-Print Network (OSTI)
This thesis covers the development of a framework for the application of revenue management, specifically capacity control, to space logistics for use in the optimization of mission cargo allocations, which in turn affect ...
Armar, Nii A
Spectra Observed Following Cargo Interrogation
SciTech Connect
The authors present calculations of photon spectra observed following irradiation of bare HEU, HEU embedded in steel and wood cargos, and steel and wood alone. These spectra might be useful starting points for statistical detection efforts aimed at determining whether fissile material is present in a cargo. Detailed comparisons between calculations and experiments are presented and overall quite good (small {chi}{sup 2}) agreement is found. they do not present a complete solution to the problem of determining whether a given spectrum contains contributions from post-fission photons. However, it is shown that a brute-force fitting of observed spectra in terms of a few calculated ''basis'' spectra gives meaningful predictions about the presence of {sup 235}U in cargo. Though this may not be the most powerful method, it does give well defined confidence limits and seems to have strong predictive power.
Pruet, J; Prussin, S; Descalle, M; Hall, J
DOE Green Energy (OSTI)
Evolution of US air cargo productivity
This thesis provides an overview of the US air cargo industry since airline deregulation in 1978, including a brief overview of the historical evolution of air cargo transport in the US from the early 1900s until the late ...
Donatelli, David J
Study on Alternative Cargo Launch Options from the Lunar Surface
In the future, there will be a need for constant cargo launches from Earth to Mars in order to build, and then sustain, a Martian base. Currently, chemical rockets are used for space launches. These are expensive and heavy due to the amount of necessary propellant. Nuclear thermal rockets (NTRs) are the next step in rocket design. Another alternative is to create a launcher on the lunar surface that uses magnetic levitation to launch cargo to Mars in order to minimize the amount of necessary propellant per mission. This paper investigates using nuclear power for six different cargo launching alternatives, as well as the orbital mechanics involved in launching cargo to a Martian base from the moon. Each alternative is compared to the other alternative launchers, as well as compared to using an NTR instead. This comparison is done on the basis of mass that must be shipped from Earth, the amount of necessary propellant, and the number of equivalent NTR launches. Of the options, a lunar coil launcher had a ship mass that is 12.7% less than the next best option and 17 NTR equivalent launches, making it the best of the presented six options.
Cheryl A. Blomberg; Zamir A. Zulkefli; Spencer W. Rich; Steven D. Howe
Nuclear Cargo Detector - Energy Innovation Portal
Apparatus for the inspection of cargo containers for nuclear materials comprising one or more arrays of modules comprising grounded, closed conductive tubes filled ...
Cargo transportation by two species of motor protein
The cargo motion in living cells transported by two species of motor protein with different intrinsic directionality is discussed in this study. Similar to single motor movement, cargo steps forward and backward along microtubule stochastically. Recent experiments found that, cargo transportation by two motor species has a memory, it does not change its direction as frequently as expected, which means that its forward and backward step rates depends on its previous motion trajectory. By assuming cargo has only the least memory, i.e. its step direction depends only on the direction of its last step, two cases of cargo motion are detailed analyzed in this study: {\\bf (I)} cargo motion under constant external load; and {\\bf (II)} cargo motion in one fixed optical trap. Due to the existence of memory, for the first case, cargo can keep moving in the same direction for a long distance. For the second case, the cargo will oscillate in the trap. The oscillation period decreases and the oscillation amplitude increases with the motor forward step rates, but both of them decrease with the trap stiffness. The most likely location of cargo, where the probability of finding the oscillated cargo is maximum, may be the same as or may be different with the trap center, which depends on the step rates of the two motor species. Meanwhile, if motors are robust, i.e. their forward to backward step rate ratios are high, there may be two such most likely locations, located on the two sides of the trap center respectively. The probability of finding cargo in given location, the probability of cargo in forward/backward motion state, and various mean first passage times of cargo to give location or given state are also analyzed.
Yunxin Zhang
Deciphering the Mechanism of E. coli tat Protien Transport: Kinetic Substeps and Cargo Properties
The Escherichia coli twin-arginine translocation (Tat) system transports fully folded and assembled proteins across the inner membrane into the periplasmic space. The E. coli Tat machinery minimally consists of three integral membrane proteins: TatA, TatB and TatC. A popular model of Tat translocation is that cargo first interacts with a substrate binding complex composed of TatB and TatC and then is transported across the inner membrane through a channel comprised primarily of TatA. The most common method for observing the kinetics of Tat transport, a protease protection assay, lacks the ability to distinguish between individual transport sub-steps and is limited by the inability to observe translocation in real-time. Therefore, a real-time FRET based assay was developed to observe interactions between the cargo protein pre-SufI, and its initial binding site, the TatBC complex. The cargo was found to first associate with the TatBC complex, and then, in the presence of a membrane potential (?psi), migrate away from the initial binding site after a 20-45 second delay. Since cargo migration away from the TatBC complex was not directly promoted by the presence of a ?psi, the delay likely represents some preparatory step that results in a transport competent translocon. In addition, the Tat system has long been identified as a potential biotechnological tool for protein production. However, much is still unknown about which cargos are suitable for transport by the Tat system. To probe the Tat system�s ability to transport substrates of different sizes and shapes, 18 different cargos were generated using the natural Tat substrate pre-SufI as a base. Transport efficiencies for these cargos indicate that not only is the Tat machinery�s ability to transport substrates determined by the protein�s molecular weight, as well as by its dimensions. In total, these results suggest a dynamic translocon that undergoes functionally significant, ?psi-dependent changes during translocation. Moreover, not every protein cargo can be directed through the Tat translocon by a Tat signal peptide, and this selectivity is not only related to the overall size of the protein, but also dependent on shape.
Whitaker, Neal 1982-
Photoactivated Colloidal Dockers for Cargo Transportation
We introduce a self-propelled colloidal hematite docker that can be steered to a small particle cargo many times its size, dock, transport the cargo to a remote location, and then release it. The self-propulsion and docking are reversible and activated by visible light. The docker can be steered either by a weak uniform magnetic field or by nanoscale tracks in a textured substrate. The light-activated motion and docking originate from osmotic/phoretic particle transport in a concentration gradient of fuel, hydrogen peroxide, induced by the photocatalytic activity of the hematite. The docking mechanism is versatile and can be applied to various materials and shapes. The hematite dockers are simple single-component particles and are synthesized in bulk quantities. This system opens up new possibilities for designing complex micrometer-size factories as well as new biomimetic systems.
J. Palacci; S. Sacanna; A. Vatchinsky; P. M. Chaikin; D. J. Pine
SecureBox: National Security Through Secure Cargo � Team Members
SecureBox: National Security Through Secure Cargo � Team Members: Front Row (left to right): Howard Lowdermilk, Greg Dallum, Faranak Nekoogar, Vickie ...
Cargo Power and Infrastructure Ltd | Open Energy Information
Open Energy Info (EERE)
Ltd Place New Delhi, Delhi (NCT), India Zip 110002 Sector Solar Product Delhi-based car dealers. The firm is developing solar projects. References Cargo Power and...
Motor transport of self-assembled cargos in crowded environments
Motor transport of self-assembled cargos in crowded environments Leslie Conwaya , Derek Woodb is performed by multiple motors working in concert. However, the mechanism of motor association to cargos is unknown. It is also unknown how long individual motors stay attached, how many are active, and how
Ross, Jennifer
Microsoft Word - BH-MM-1066,BM-MM-1067,WH-MM-1068.docx
Energy.gov (U.S. Department of Energy (DOE)) Indexed Site
, BM-MM-1067, WH-MM-1068 , BM-MM-1067, WH-MM-1068 Title: Pumping System for 100 MBD Cavern Capacity Maintenance - BH, BM, WH Description: Subcontractor shall provide all labor, tools, materials, equipment, services, transportation, storage and supervision required to install new Variable Frequency Drive (VFD) buildings at the BH, BM, and WH SPR sites. The buildings will house the VFD electrical system used to control the operation of the site pumps. Tasks include excavation for all foundations; construction of concrete foundation, steel support structure, and precast concrete deck; and installation of GFE pre-fabricated metal building on concrete deck. Subcontractor shall evaluate and implement Green Building Design where applicable. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021)
MM Nashville Biomass Facility | Open Energy Information
Sign Up Search Page Edit with form History Facebook icon Twitter icon MM Nashville Biomass Facility Jump to: navigation, search Name MM Nashville Biomass Facility Facility MM...
eGSE America: Electric Aircraft Cargo Conveyor Technical Specification
NLE Websites -- All DOE Office Websites (Extended Search)
EACC Technical Specifications EACC Technical Specifications eGSE America: Electric Aircraft Cargo Conveyor (EACC) Technical Specifications Revision 00 August 2005 Prepared by Electric Transportation Applications eGSE America: EACC Technical Specifications 1.0 SCOPE: This document outlines the design and performance requirements for a battery- powered, self propelled belt conveyor for handling baggage and cargo at aircraft bulk cargo holds. The use of "shall" in this document indicates a mandatory requirement. The use of "should" indicates a recommendation or that which is advised but not required. 2.0 APPLICABLE DOCUMENTS: Portions of the following documents to the extent specified herein are a part of this Recommended Practice.
of Energy�s National Nuclear Security Administration underof Homeland Security, Domestic Nuclear Detection Office,nuclear material hidden in cargo containers has become an important research topic for homeland security.
Lou, Tak Pui; Antolak, Arlyn
Rotational dynamics of cargos at pauses during axonal transport
Direct visualization of axonal transport in live neurons is essential for our understanding of the neuronal functions and the working mechanisms of microtubule-based motor proteins. Here we use the high-speed single particle orientation and rotational tracking technique to directly visualize the rotational dynamics of cargos in both active directional transport and pausing stages of axonal transport, with a temporal resolution of 2 ms. Both long and short pauses are imaged, and the correlations between the pause duration, the rotational behaviour of the cargo at the pause, and the moving direction after the pause are established. Furthermore, the rotational dynamics leading to switching tracks are visualized in detail. These first-time observations of cargo's rotational dynamics provide new insights on how kinesin and dynein motors take the cargo through the alternating stages of active directional transport and pause.
Gu, Yan; Sun, Wei; Wang, Gufeng; Jeftinija, Ksenija; Jeftinija, Srdija; Fang, Ning
We describe the results of a Monte Carlo simulation 10 investigate the feasibility of using a pulsed deuterium-tritium (D-T) neutron technique for active interrogation of special nuclear material in cargo containers. Time distributions of fission neutrons from highly enriched uranium induced by a pulsed D-T neutron source were calculated for cargo containers with different hydrogen contents. A simple detector system with polyethylene and cadmium was modeled to calculate the two-group neutron flux at the detector.
LEE, SANG Y. [Los Alamos National Laboratory; BEDDINGFIELD, DAVID H. [Los Alamos National Laboratory; PARK, JAEYOUNG [Los Alamos National Laboratory
A Monte Carlo Model for Interrogation of Thick Cargos for Clandestine Fissionable Materials; Tests with 14-MeV Neutrons
A Monte Carlo model has been developed for interrogation of fissionable material embedded in thick cargos when high-energy {beta}-delayed {gamma} rays are detected following neutron-induced fission. The model includes the principal structural components of the laboratory, the neutron source and collimator assembly in which it resides, the assembly that represents cargo of given characteristics, a target of highly-enriched uranium (HEU) and large external plastic scintillators for photon detection. The ability of this model to reproduce experimental measurements was tested by comparing simulations with measurements of the number of induced fissions and the number of detected photons when the HUE target was irradiated with 14.25-MeV neutrons in the absence of any cargo and while embedded in assemblies of plywood and iron pipes. The simulations agreed with experimental measurements within a factor of about 2 for irradiation of the bare target and when the areal density of intervening cargo was 33 g cm{sup -2} (wood) and 61 g cm{sup -2} (steel pipes). This suggests that the model can permit exploration of a large range in parameter space with reasonable fidelity.
Prussin, S; Descalle, M; Hall, J; Pruet, J; Slaughter, D; Accatino, M; Alford, O; Asztalos, S; Bernstein, A; Church, J; Gosnell, T; Loshak, A; Madden, N; Manatt, D; Mauger, G; Meyer, A; Moore, T; Norman, E; Pohl, B; Petersen, D; Rusnak, B; Sundsmo, T; Tembrook, W; Walling, R
Naturally Occurring Radioactive Materials in Cargo at US Borders
Science Conference Proceedings (OSTI)
In the U.S. and other countries, large numbers of vehicles pass through border crossings each day. The illicit movement of radioactive sources is a concern that has resulted in the installation of radiation detection and identification instruments at border crossing points. This activity is judged to be necessary because of the possibility of an act of terrorism involving a radioactive source that may include any number of dangerous radionuclides. The problem of detecting, identifying, and interdicting illicit radioactive sources is complicated by the fact that many materials present in cargo are somewhat radioactive. Some cargo contains naturally occurring radioactive material or technologically-enhanced naturally occurring radioactive material that may trigger radiation portal monitor alarms. Man-made radioactive sources, especially medical isotopes, are also frequently observed and produce alarms. Such nuisance alarms can be an operational limiting factor for screening of cargo at border crossings. Information about the nature of the radioactive materials in cargo that can interfere with the detection of radionuclides of concern is necessary. This paper provides such information for North American cargo, but the information may also be of use to border control officials in other countries. (PIET-43741-TM-361)
Kouzes, Richard T.; Ely, James H.; Evans, John C.; Hensley, Walter K.; Lepel, Elwood A.; McDonald, Joseph C.; Schweppe, John E.; Siciliano, Edward R.; Strom, Daniel J.; Woodring, Mitchell L.
Capacity Utilization Study for Aviation Security Cargo Inspection Queuing System
In this paper, we conduct performance evaluation study for an aviation security cargo inspection queuing system for material flow and accountability. The queuing model employed in our study is based on discrete-event simulation and processes various types of cargo simultaneously. Onsite measurements are collected in an airport facility to validate the queuing model. The overall performance of the aviation security cargo inspection system is computed, analyzed, and optimized for the different system dynamics. Various performance measures are considered such as system capacity, residual capacity, throughput, capacity utilization, subscribed capacity utilization, resources capacity utilization, subscribed resources capacity utilization, and number of cargo pieces (or pallets) in the different queues. These metrics are performance indicators of the system s ability to service current needs and response capacity to additional requests. We studied and analyzed different scenarios by changing various model parameters such as number of pieces per pallet, number of TSA inspectors and ATS personnel, number of forklifts, number of explosives trace detection (ETD) and explosives detection system (EDS) inspection machines, inspection modality distribution, alarm rate, and cargo closeout time. The increased physical understanding resulting from execution of the queuing model utilizing these vetted performance measures should reduce the overall cost and shipping delays associated with new inspection requirements.
Allgood, Glenn O [ORNL; Olama, Mohammed M [ORNL; Lake, Joe E [ORNL; Brumback, Daryl L [ORNL
Is Screening Cargo Containers for Smuggled Nuclear Threats Worthwhile?
In recent years, Customs and Border Protection has installed radiation sensors to screen cargo containers entering the United States. They are concerned that terrorists could use containers to smuggle radiological material into the country and carry ... Keywords: applications, multiple-objective decision analysis, probability, terrorism
Jason R. W. Merrick; Laura A. McLay
RECORD OF CATEGORICAL EXCLUSION DETERMINATION Project ID No. BC-MM-1029, BH-MM-1030, BM-MM-1031, WH-MM-1032
1029, BH-MM-1030, BM-MM-1031, WH-MM-1032 1029, BH-MM-1030, BM-MM-1031, WH-MM-1032 Title: Install Power Metering for SPR Site Buildings Description: Subcontractor shall provide all labor, tools, materials, equipment, and supervision required to install power metering at the four SPR sites. The meters will monitor energy consumption at the SPR site control, administrative, and maintenance buildings. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment (categorical exclusions). (b) To find that a proposal is categorically excluded, DOE shall determine the following:
A Neutron Based Interrogation System For SNM In Cargo
A complete system has been simulated using experimentally obtained input parameters for the detection of special nuclear materials (SNM). A variation of the associated particle imaging (API) technique, referred to as reverse associated particle imaging detection (RAPID), has been developed in the context of detecting 5-kg spherical samples of U-235 in cargo. The RAPID technique allows for the interrogation of containers at neutron production rates between {approx}1x10{sup 8} neutrons/s and {approx}3x10{sup 8} neutrons/s. The merit of performance for the system is the time to detect the threat material with 95% probability of detection and 10{sup -4} false positive rate per interrogated voxel of cargo. Detection times of 5 minutes were found for a maximally loaded cargo container uniformly filled with iron and as low as 1 second in containers loaded to 1/4 of full capacity with either iron or wood. The worse case system performance, 30 minutes interrogation time, occurs for a maximally loaded container containing wood at 0.4 g/cm{sup 3}.
Kane, Steven Z.; Koltick, David S. [Purdue University, Physics Department, 525 Northwestern Avenue, W. Lafayette, IN 47907 (United States)
OOMMF/mmDisp Magnetization Display Program
... mmDisp is written in C++ and Tcl/Tk, and should be portable to any platform with a recent C++ compiler and Tcl/Tk support. ...
MM5 Contrail Forecasting in Alaska
The fifth-generation Pennsylvania State University�National Center for Atmospheric Research (PSU�NCAR) Mesoscale Model (MM5) is being used for forecasting the atmospheric layers of aircraft condensation trail (contrail) formation. Contrail ...
Martin Stuefer; Xiande Meng; Gerd Wendler
The use of AVL integrated with RFID for the transportation of fractioned cargo
This work has as purpose to describe and evaluate the integration of different technologies with the purpose of improving the transportation and h and highway distribution of cargo. Through a comparative analysis, advantages and disadvantages of the ... Keywords: AVL, RFID, barcode, fractioned cargo, georeferral, logistics
D�cio Tomasulo De Vicente; Marcelo Jos� Maluf Garcia; Silvio Giuseppe Di Santo; Eduardo Mario Dias; Caio Fernando Fontana
AVL system integration with RFID for the optimization of cargo transportation
The aim of this paper is to describe and evaluate the integration of different technologies such as RFID, in order to improve road transport and distribution of cargo, resulting in a decrease or even mitigation of damages involved in current logistics ... Keywords: AVL, RFID, fractioned cargo, logistic process
D�cio Tomasulo De Vicente; Marcelo Jos� Maluf Garcia; Silvio Giuseppe Di Santo; Eduardo Mario Dias
Neutron interrogation system using high gamma ray signature to detect contraband special nuclear materials in cargo
DOE Patents (OSTI)
A system for inspecting cargo for the presence of special nuclear material. The cargo is irradiated with neutrons. The neutrons produce fission products in the special nuclear material which generate gamma rays. The gamma rays are detecting indicating the presence of the special nuclear material.
Slaughter, Dennis R. (Oakland, CA); Pohl, Bertram A. (Berkeley, CA); Dougan, Arden D. (San Ramon, CA); Bernstein, Adam (Palo Alto, CA); Prussin, Stanley G. (Kensington, CA); Norman, Eric B. (Oakland, CA)
Memory, Bias and Correlations in Bidirectional Transport of Molecular Motor-driven Cargoes
Molecular motors are specialized proteins which perform active, directed transport of cellular cargoes on cytoskeletal filaments. In many cases, cargo motion powered by motor proteins is found to be bidirectional, and may be viewed as a biased random walk with fast unidirectional runs interspersed with slow `tug-of-war' states. The statistical properties of this walk are not known in detail, and here, we study memory and bias, as well as directional correlations between successive runs in bidirectional transport. We show, based on a study of the direction reversal probabilities of the cargo using a purely stochastic (tug-of-war) model, that bidirectional motion of cellular cargoes is, in general, a correlated random walk. In particular, while the motion of a cargo driven by two oppositely pulling motors is a Markovian random walk, memory of direction appears when multiple motors haul the cargo in one or both directions. In the latter case, the Markovian nature of the underlying single motor processes is hidden by internal transitions between degenerate run and pause states of the cargo. Interestingly, memory is found to be a non-monotonic function of the number of motors. Stochastic numerical simulations of the tug-of-war model support our mathematical results and extend them to biologically relevant situations.
Deepak Bhat; Manoj Gopalakrishnan
A system for the detection of concealed nuclear weapons and fissile material aboard cargo cotainerships
A new approach to the detection of concealed nuclear weapons and fissile material aboard cargo containerships is proposed. The ship-based approach removes the constraints of current thinking by addressing the threat of ...
Gallagher, Shawn P., S.M. Massachusetts Institute of Technology
Safety evaluation for packaging 222-S laboratory cargo tank for onetime type B material shipment
The purpose of this Safety Evaluation for Packaging (SEP) is to evaluate and document the safety of the onetime shipment of bulk radioactive liquids in the 222-S Laboratory cargo tank (222-S cargo tank). The 222-S cargo tank is a US Department of Transportation (DOT) MC-312 specification (DOT 1989) cargo tank, vehicle registration number HO-64-04275, approved for low specific activity (LSA) shipments in accordance with the DOT Title 49, Code of Federal Regulations (CFR). In accordance with the US Department of Energy, Richland Operations Office (RL) Order 5480.1A, Chapter III (RL 1988), an equivalent degree of safety shall be provided for onsite shipments as would be afforded by the DOT shipping regulations for a radioactive material package. This document demonstrates that this packaging system meets the onsite transportation safety criteria for a onetime shipment of Type B contents.
Nguyen, P.M.
Viewing the Evolution of Massive Star Formation through FIR/Sub-mm/mm Eyes
In this paper, we present an overview of our method of constructing a family of models for the far-infrared, sub-millimeter, and millimeter (FIR/sub-mm/mm) line emission of molecular and atomic gas surrounding massive star formation in starburst galaxies. We show the results of a case study, an expanding supershell centered around a massive star cluster with a particular set of input parameters and its application to nearby starburst galaxy M 82. This set of models can be used not only to interpret the observations of FIR/sub-mm/mm line emission from molecular and atomic gas, but also to investigate the physical environment and the initial cloud conditions in massive star forming regions as well as the ages of the starbursts through simulations for a wide range of input parameters. Finally, we discuss limitations of our models, and outline future work.
Lihong Yao; E. R. Seaquist
Length monitor for 1 mm SLC bunches
A non-intercepting RF bunch length monitor for {sigma}{sub z} = 0.5 to 2.0 mm long electron and positron bunches in the Stanford Linear Collider (SLC) has been built with a design similar to a previous device for longer bunches. For this device, fields from the beam pass through a ceramic gap, enter receiving cavities, are the measured with power detectors, and finally are recorded by the SLC control computer. The designs of the receiving cavities (25 and 36 GHz) are described as well as the choice of the RF power distribution and measuring systems. Beam measurements have been taken as a function of bunch compressor RF voltage, bunch intensity, and beam position. Long term bunch length measurements were recorded during SLC colliding beam operation indicating that the bunch length is constant to about 3%. Thus, 1 mm length monitors operating at 25 and 36 GHz have successfully monitored long term bunch length changes at the few percent level in the SLC.
Babenko, E.; Jobe, R.K.; McCormick, D.; Seeman, J.T.
A Study of Lead Ingot Cargoes from Ancient Mediterranean Shipwrecks
Lead is often relegated to a footnote or sidebar in the study of ancient metals. However, the hundreds of lead ingots discovered in underwater sites over the past half-century have attested to the widespread production and trade of this utilitarian metal. Shipwreck sites allow independent dating evidence not available for many land find. They also provide information about shipment size as well as accompanying cargo which can offer clues about trade patterns and markets for lead in the ancient world. While lead was not particularly rare nor valuable, it represents small- to moderate-scale trade that bridges the gap between luxury trade and the circulation of staple agricultural products. It thus can be viewed as a proxy for the many other perishable materials that supported daily life, such as timber, cloth, cordage, leather and pigments. Due to the abundance of lead ingot finds, published in many different languages with great variation in the details provided, it is difficult to compare all of this material. This thesis, therefore, compiles and presents data on all published lead ingots from Mediterranean and Atlantic shipwrecks through the fourth century C.E., in order to provide a framework to analyze the ancient seaborne lead trade. Sixty-eight sites containing lead ingots, lead ore or lead minerals are included in the analysis, divided into six time periods: Bronze Age, Archaic, Classical, Hellenistic, Roman Republic and Roman Empire. A typology of ingots has been developed to allow for comparison of ingots between wrecks. The uses of lead are reviewed, organized by type of use: domestic, professional, military and infrastructural. This allows insight into both the consumers in need of lead and the volume and regularity of consumption required for each use. An overview of lead production and its economic limitations further informs the discussion of the lead trade. The final analysis considers all of these factors in creating a picture of lead trade for each of the six periods, focusing on the regions of supply, the types of demand, and the dominant forces that drove the mining and production of lead.
Brown, Heather Gail
SpaceX-D Manifest USOS (U.S. On-Orbit Segment) Cargo
range from microbial growth to water purification in microgravity · Ice bricks For cooling and transfer flights Computers and supplies 22 pounds (10 kilograms) · Laptop, batteries, power supply cables Total kilograms) · "Plant Signaling" hardware (16 Experiment Unique Equipment Assemblies) · Plant Signaling seek
M.M. Handbook/August 2009 Graduate Handbook
M.M. Handbook/August 2009 Graduate Handbook Master of Music school of Music University of Kansas Revised 2009 #12;M.M. Handbook/August 2009ii TABLE OF CONTENTS PAGE HOW TO USE THIS HANDBOOK and voice students Level required in musicology and theory courses #12;M.M. Handbook/August 2009iii Course
Peterson, Blake R.
Feasibility analysis of scanning 100% of maritime cargo containers for fissile material
On August 3, 2007, President George W. Bush signed into law H.R. 1: Implementing Recommendations of the 9/11 Commission Act of 2007. The law mandates that 100% of air and maritime cargo must be scanned prior to entering ...
Foley, William E., III
Functional description for the Worldwide Port System (WPS) Regional Integrated Cargo Database (ICDB)
This Functional Description for the Worldwide Port System (WPS) Regional Integrated Cargo Database (ICDB) documents the purpose of and requirements for the ICDB in order to ensure a mutual understanding between the development group and the user group of the system. This Functional Description defines ICDB and provides a clear statement of the initial operational capability to be developed.
Truett, L.F.; Rollow, J.P.; Shipe, P.C. [Oak Ridge National Lab., TN (United States); Faby, E.Z.; Fluker, J.; Hancock, W.R.; Grubb, J.W.; Russell, D.L. [Univ. of Tennessee, Knoxville, TN (United States); Ferguson, R.A. [SAIC, Oak Ridge, TN (United States)
Microsoft Word - VP-MM-820 NEPA.docx
storage, and supervision required to install the Power Monitoring, Communication and Control system government furnished equipment (procured under VP-MM-802A) at the Bryan...
Available Technologies: Rare Variant of Mucin, MM, Marks ...
Biofuels; Biotechnology ... The MM marker might also be used as a cell-surface target for precision therapeutics designed to kill this particular subpopulation of ...
Influence of direct motor-motor interaction in models for cargo transport by a single team of motors
We analyze theoretically the effects of excluded-volume interactions between motors on the dynamics of a cargo driven by multiple motors. The model considered shares many commons with other recently proposed in the literature, with the addition of direct interaction between motors and motor back steps. The cargo is assumed to follow a continuum Langevin dynamics, while individual motors evolve following a Monte Carlo algorithm based on experimentally accessible probabilities for discrete forward and backward jumps, and attachment and detachment rates. The links between cargo and motors are considered as non linear springs. By means of numerical simulations we compute the relevant quantities characterizing the dynamical properties of the system, and we compare the results to those for non interacting motors. We find that interactions lead to quite relevant changes in the force-velocity relation for cargo, with a considerable reduction of the stall force, and cause also a notable decrease of the run length. The...
Bouzat, Sebastian; 10.1088/1478-3975/7/4/046009
M.M. Handbook/August 2011 Graduate Handbook
M.M. Handbook/August 2011 Graduate Handbook Master of Music school of Music University of Kansas Revised 2011 #12;ii TABLE OF CONTENTS PAGE HOW TO USE THIS HANDBOOK Students.................36 #12;M.M. Handbook/August 20111 HOW TO USE THIS HANDBOOK The information
Shock and vibration environments encountered during normal rail transportation of heavy cargo
This study was conducted to obtain vibration and superimposed shock data during normal rail shipment of heavy cargo. The data were obtained during a regularly scheduled rail shipment of a 45-tonne (50-ton) cargo which consisted of an empty spent-fuel container, its supporting structure, and associated hoisting devices. The shipment was made over rail lines which are operated by the Atchison, Topeka, and Santa Fe Railway Company between Denver, Colorado and Albuquerque, New Mexico. The instrumented rail car was equipped with 0.38-m (15-in.) hydraulic end-of-car coupling devices. The 99 percentile levels of vibration acceleration amplitudes and single degree-of-freedom superimposed shock response spectra for the longitudinal, transverse, and vertical axes are presented.
Magnuson, C.F.
Cost-Sensitive Classification Methods for the Detection of Smuggled Nuclear Material in Cargo Containers
Classification problems arise in so many different parts of life � from sorting machine parts to diagnosing a disease. Humans make these classifications utilizing vast amounts of data, filtering observations for useful information, and then making a decision based on a subjective level of cost/risk of classifying objects incorrectly. This study investigates the translation of the human decision process into a mathematical problem in the context of a border security problem: How does one find special nuclear material being smuggled inside large cargo crates while balancing the cost of invasively searching suspect containers against the risk of al lowing radioactive material to escape detection? This may be phrased as a classification problem in which one classifies cargo containers into two categories � those containing a smuggled source and those containing only innocuous cargo. This task presents numerous challenges, e.g., the stochastic nature of radiation and the low signal-to-noise ratio caused by background radiation and cargo shielding. In the course of this work, we will break the analysis of this problem into three major sections � the development of an optimal decision rule, the choice of most useful measurements or features, and the sensitivity of developed algorithms to physical variations. This will include an examination of how accounting for the cost/risk of a decision affects the formulation of our classification problem. Ultimately, a support vector machine (SVM) framework with F -score feature selection will be developed to provide nearly optimal classification given a constraint on the reliability of detection provided by our algorithm. In particular, this can decrease the fraction of false positives by an order of magnitude over current methods. The proposed method also takes into account the relationship between measurements, whereas current methods deal with detectors independently of one another.
Webster, Jennifer B
System/subsystem specifications for the Worldwide Port System (WPS) Regional Integrated Cargo Database (ICDB)
A system is being developed by the Military Traffic Management Command (MTMC) to provide data integration and worldwide management and tracking of surface cargo movements. The Integrated Cargo Database (ICDB) will be a data repository for the WPS terminal-level system, will be a primary source of queries and cargo traffic reports, will receive data from and provide data to other MTMC and non-MTMC systems, will provide capabilities for processing Advance Transportation Control and Movement Documents (ATCMDs), and will process and distribute manifests. This System/Subsystem Specifications for the Worldwide Port System Regional ICDB documents the system/subsystem functions, provides details of the system/subsystem analysis in order to provide a communication link between developers and operational personnel, and identifies interfaces with other systems and subsystems. It must be noted that this report is being produced near the end of the initial development phase of ICDB, while formal software testing is being done. Following the initial implementation of the ICDB system, maintenance contractors will be in charge of making changes and enhancing software modules. Formal testing and user reviews may indicate the need for additional software units or changes to existing ones. This report describes the software units that are components of this ICDB system as of August 1995.
Rollow, J.P.; Shipe, P.C.; Truett, L.F. [Oak Ridge National Lab., TN (United States)] [Oak Ridge National Lab., TN (United States); Faby, E.Z.; Fluker, J.; Grubb, J.; Hancock, B.R. [Univ. of Tennessee, Knoxville, TN (United States)] [Univ. of Tennessee, Knoxville, TN (United States); Ferguson, R.A. [Science Applications International Corp., Oak Ridge, TN (United States)] [Science Applications International Corp., Oak Ridge, TN (United States)
A power beaming based infrastructure for space power
At present all space mission power requirements are met by integral, on-board, self-contained power systems. To provide needed flexibility for space exploration and colonization, an additional approach to on-board, self-contained power systems is needed. Power beaming, an alternative approach to providing power, has the potential to provide increased mission flexibility while reducing total mass launched into space. Laser-power beaming technology provides a viable power and communication infrastructure that can be developed sequentially as it is applied to power satellite constellations in Earth orbit and to orbital transport vehicles transferring satellites and cargos to geosynchronous orbit and beyond. Coupled with nuclear electric propulsion systems for cargo transport, the technology can be used to provide global power to the Lunar surface and to Mars' surface and moons. The technology can be developed sequentially as advances in power system and propulsion system technology occur. This paper presents stepwise development of an infrastructure based on power beaming that can support the space development and exploration goals of the Space Exploration Initiative. Power scenarios based on commonality of power systems hardware with cargo transport vehicles are described. Advantages of this infrastructure are described. 12 refs., 4 figs., 1 tab.
Bamberger, J.A.
Geothermal: Sponsored by OSTI -- Feasibility study for a 10-MM...
study for a 10-MM-GPY fuel ethanol plant, Brady Hot Springs, Nevada. Volume 1. Process and plant design Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us |...
GFDL-Type Typhoon Initialization in MM5
The Geophysical Fluid Dynamics Laboratory (GFDL) hurricane initialization algorithm is implemented in the community fifth-generation Pennsylvania State University�National Center for Atmospheric Research Mesoscale Model (MM5). This work is ...
H. Joe Kwon; Seong-Hee Won; Myung-Hwan Ahn; Ae-Sook Suh; Hyo-Sang Chung
40 MM Grenade Launcher Qualification Requirements at Department of Energy
40 MM Grenade Launcher Qualification Requirements at Department of 40 MM Grenade Launcher Qualification Requirements at Department of Energy Sites, IG-0806 40 MM Grenade Launcher Qualification Requirements at Department of Energy Sites, IG-0806 The Department of Energy and its National Nuclear Security Administration (NNSA), operate some of the most sensitive Federal facilities in the United States. Because of the mission requirements, safeguards and security is a top priority at these sites. As part of its security regime, the Department maintains a cadre of armed protective force officers to prevent and defend against malevolent acts. In recent years, the Department has worked to enhance security by increasing the capabilities of weapon systems used by the protective force officers. One such weapon is the 40 mm grenade launcher, which utilizes high explosive
Monte-Carlo Simulations of Radiation-Induced Activation in a Fast-Neutron and Gamma- Based Cargo Inspection System
An air cargo inspection system combining two nuclear reaction based techniques, namely Fast-Neutron Resonance Radiography and Dual-Discrete-Energy Gamma Radiography is currently being developed. This system is expected to allow detection of standard and improvised explosives as well as special nuclear materials. An important aspect for the applicability of nuclear techniques in an airport inspection facility is the inventory and lifetimes of radioactive isotopes produced by the neutron and gamma radiation inside the cargo, as well as the dose delivered by these isotopes to people in contact with the cargo during and following the interrogation procedure. Using MCNPX and CINDER90 we have calculated the activation levels for several typical inspection scenarios. One example is the activation of various metal samples embedded in a cotton-filled container. To validate the simulation results, a benchmark experiment was performed, in which metal samples were activated by fast-neutrons in a water-filled glass jar. The induced activity was determined by analyzing the gamma spectra. Based on the calculated radioactive inventory in the container, the dose levels due to the induced gamma radiation were calculated at several distances from the container and in relevant time windows after the irradiation, in order to evaluate the radiation exposure of the cargo handling staff, air crew and passengers during flight. The possibility of remanent long-lived radioactive inventory after cargo is delivered to the client is also of concern and was evaluated.
B. Bromberger; D. Bar; M. Brandis; V. Dangendorf; M. B. Goldberg; F. Kaufmann; I. Mor; R. Nolte; M. Schmiedel; K. Tittelmeier; D. Vartsky; H. Wershofen
Nuclear Car Wash sensitivity in varying thicknesses of wood and steel cargo
The influence of incident neutron attenuation on signal strengths in the Nuclear Car Wash has been observed experimentally for both wood and steel-pipe mock cargos. Measured decay curves are presented for {beta}-delayed high-energy {gamma}-rays and thermalized neutrons following neutron-induced fission of HEU through varying irradiation lengths. Error rates are extracted for delayed-{gamma} and delayed-n signals integrated to 30 seconds, assuming Gaussian distributions for the active background. The extrapolation to a field system of 1 mA deuterium current and to a 5 kg sample size is discussed.
Church, J; Slaughter, D; Asztalos, S; Biltoft, P; Descalle, M; Hall, J; Manatt, D; Mauger, J; Norman, E; Petersen, D; Prussin, S
An air cargo inspection system combining two nuclear reaction based techniques, namely Fast-Neutron Resonance Radiography and Dual-Discrete-Energy Gamma Radiography is currently being developed. This system is expected to allow detection of standard and improvised explosives as well as special nuclear materials. An important aspect for the applicability of nuclear techniques in an airport inspection facility is the inventory and lifetimes of radioactive isotopes produced by the neutron and gamma radiation inside the cargo, as well as the dose delivered by these isotopes to people in contact with the cargo during and following the interrogation procedure. Using MCNPX and CINDER90 we have calculated the activation levels for several typical inspection scenarios. One example is the activation of various metal samples embedded in a cotton-filled container. To validate the simulation results, a benchmark experiment was performed, in which metal samples were activated by fast-neutrons in a water-filled glass jar. T...
Bromberger, B; Brandis, M; Dangendorf, V; Goldberg, M B; Kaufmann, F; Mor, I; Nolte, R; Schmiedel, M; Tittelmeier, K; Vartsky, D; Wershofen, H
Stratus Cloud Structure from MM-Radar Transects and Satellite...
and Artifact Detection with Semi-Discrete Wavelet Analyses A. B. Davis Space and Remote Sensing Sciences Group Los Alamos National Laboratory Los Alamos, New Mexico N. P....
A Criminal Movement Model (CriMM) - CECM - Simon Fraser ...
Figure 1. Activity and awareness spaces. 2011 European Intelligence and Security Informatics Conference. 978-0-7695-4406-9/11 $26.00 ? 2011 IEEE.
Expansion of Bound-State Energies in Powers of m/M and (1-m/M)
Elaborating on a previous letter [1], we use a new approach to compute energy levels of a nonrelativistic bound-state of two constituents, with masses m and M, by systematic expansions--one in powers of m/M and another in powers of (1-m/M). Technical aspects of the calculations are described in detail. Theoretical predictions are given for {Omicron}({alpha}(Z{alpha}){sup 5}) radiative recoil and {Omicron}((Z{alpha}){sup 6}) pure recoil corrections to the average energy shift and hyperfine splitting relevant for hydrogen, muonic hydrogen, and muonium.
Melnikov, Kirill
We analyze theoretically the effects of excluded-volume interactions between motors on the dynamics of a cargo driven by multiple motors. The model considered shares many commons with other recently proposed in the literature, with the addition of direct interaction between motors and motor back steps. The cargo is assumed to follow a continuum Langevin dynamics, while individual motors evolve following a Monte Carlo algorithm based on experimentally accessible probabilities for discrete forward and backward jumps, and attachment and detachment rates. The links between cargo and motors are considered as non linear springs. By means of numerical simulations we compute the relevant quantities characterizing the dynamical properties of the system, and we compare the results to those for non interacting motors. We find that interactions lead to quite relevant changes in the force-velocity relation for cargo, with a considerable reduction of the stall force, and cause also a notable decrease of the run length. These effects are mainly due to traffic-like phenomena in the microtubule. The consideration of several parallel tracks for motors reduces such effects. However, we find that for realistic values of the number of motors and the number of tracks, the influence of interactions on the global parameters of transport of cargo are far from being negligible. Our studies provide also an analysis of the relevance of motor back steps on the modeling, and of the influence of different assumptions for the detachment rates. In particular, we discuss these two aspects in connection with the possibility of observing processive back motion of cargo at large load forces.
Sebastian Bouzat; Fernando Falo
CargoNet: a low-cost micropower sensor node exploiting quasi-passive wakeup for adaptive asychronous monitoring of exceptional events
This paper describes CargoNet, a system of low-cost, micropower active sensor tags that seeks to bridge the current gap between wireless sensor networks and radio-frequency identification (RFID). CargoNet was aimed at applications in environmental monitoring ... Keywords: active RFID, micropower sensing, power management
Mateusz Malinowski; Matthew Moskwa; Mark Feldmeier; Mathew Laibowitz; Joseph A. Paradiso
Sizing of a 3,000,000t bulk cargo port through discrete and stochastic simulation integrated with response surface methodology techniques
The purpose of the study is to size, by means of a discrete and stochastic simulator, a bulk cargo port for the unloading of coal to cover the annual requirements of a thermal power plant located next to the berth. The logistics system under consideration ... Keywords: bulk cargo port design, discrete and stochastic simulation, mean square pure error evolution, response surface methodology
L. Cassettari; R. Mosca; R. Revetria; F. Rolando
Nowadays in Russia and abroad there are several groups of scientists, engaged in development of systems based on 'tagged' neutron method (API method) and intended for detection of dangerous materials, including high explosives (HE). Particular attention is paid to possibility of detection of dangerous objects inside a sea cargo container. Energy gamma-spectrum, registered from object under inspection is used for determination of oxygen/carbon and nitrogen/carbon chemical ratios, according to which dangerous object is distinguished from not dangerous one. Material of filled container, however, gives rise to additional effects of rescattering and moderation of 14 MeV primary neutrons of generator, attenuation of secondary gamma-radiation from reactions of inelastic neutron scattering on objects under inspection. These effects lead to distortion of energy gamma-response from examined object and therefore prevent correct recognition of chemical ratios. These difficulties are taken into account in analytical method, presented in the paper. Method has been validated against experimental data, obtained by the system for HE detection in sea cargo, based on API method and developed in VNIIA. Influence of shielding materials on results of HE detection and identification is considered. Wood and iron were used as shielding materials. Results of method application for analysis of experimental data on HE simulator measurement (tetryl, trotyl, hexogen) are presented.
Anan'ev, A. A.; Belichenko, S. G.; Bogolyubov, E. P.; Bochkarev, O. V.; Petrov, E. V.; Polishchuk, A. M.; Udaltsov, A. Yu. [All-Russian Research Institute of Automatics 127055, Moscow, Sushevskaya st., 22 (Russian Federation)
Posters Surface Flux Intercomparison Between the MM5 Model
Posters Surface Flux Intercomparison Between the MM5 Model and Observations During the Storm-Scale Observations Regional Measurement Program-Fronts Experiment Systems Test 1992 J. Dudhia and S. P. Oncley Mesoscale and Microscale Meteorology Division Atmospheric Technology Division National Center for Atmospheric Research Boulder, Colorado Introduction Mesoscale model 5 (MM5) is being used as a data assimilation tool for the Atmospheric Radiation Measurement (ARM) Program. There is a need to verify that the model physics is consistent with observations under a range of conditions. Surface fluxes of heat, moisture, and momentum are a particular area of uncertainty in the model owing to their dependence on surface properties, some of which are time-dependent. The National Center for Atmospheric Research (NCAR)
RECORD OF CATEGORICAL EXCLUSION DETERMINATION Project ID No. BC-MM-669 and BC-MM-673
669 and BC-MM-673 669 and BC-MM-673 Title: BC Site Building Upgrades, Phases II and III Description: Subcontractor shall provide all labor, tools, materials, equipment, and supervision required to perform various building upgrades at BC Buildings 401, 402, 403, 408, 415, and 416 (Phase II) and BC Buildings 401, 402, 413, and 414 (Phase III). Subcontractor shall evaluate and implement Green Building Design where applicable. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment (categorical exclusions).
Microsoft Word - BM-MM-762A,GFE.docx
A A Title: Replace Brine Disposal System Header to BM Brine Tank, GFE Description: Manufacturer shall provide the piping and fittings associated with the replacement of the brine disposal system header to the BM Brine Tank as Government Furnished Equipment (GFE). The manufacturer shall load all materials onto transports supplied by others. Installation will be performed by others under BM-MM-762. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment (categorical exclusions).
Mitigating the Effects of Space Debris on Composite Structures ...
The CFRP specimens were then subjected to hypervelocity impact conditions -to simulate the space debris impact- using projectiles of about 4 mm in diameter�...
Polar MM5 Simulations of the Winter Climate of the Laurentide Ice Sheet at the LGM
Optimized regional climate simulations are conducted using the Polar MM5, a version of the fifth-generation Pennsylvania State University�NCAR Mesoscale Model (MM5), with a 60-km horizontal resolution domain over North America during the Last ...
David H. Bromwich; E. Richard Toracinta; Helin Wei; Robert J. Oglesby; James L. Fastook; Terence J. Hughes
Platek Spaces
The aim of this work is to axiomatize and enhance the recursion theory on monotonic hierarchies of operative spaces developed in [1]. This is to be accomplished by employing a special new variety of operative spaces called Platek spaces. The original ... Keywords: Platek spaces, combinatory algebra, computability, generalised recursion theory, lightface recursion
Lyubomir Ivanov
ADIFOR working note No. 11: ADIFOR strategies related to POINTER usage in MM5
POINTERs are nonstandard Fortran statements which cannot be processed by ADIFOR. We are interested in generating derivative code for MM5, a mesoscale model code which uses POINTERs extensively and in a particular structured manner. We briefly report on POINTERs and their role in MM5 and, for their particular usage in MM5, describe the three-step code transformation scheme consisting of pre-ADIFOR, ADIFOR, and post-ADIFOR transformations that result in the generation of correct derivative code for MM5.
Bischof, C.; Khademi, P.; Knauff, T.
Progress 44 Manifest (Partial) USOS (U.S. On-Orbit Segment) Cargo
at High Shielding Mass (HiMassSEE) A NASA/JSC Engineering experiment designed to measure space radiation interactions with spacecraft structure and shielding using several passive track detector technologies to provide a more accurate definition of payload accommodations Human Research Program (HRP) resupply
The Bolocam Galactic Plane Survey IV: 1.1 and 0.35 mm Dust Continuum Emission in the Galactic Center Region
The Bolocam Galactic Plane Survey (BGPS) data for a six square degree region of the Galactic plane containing the Galactic center is analyzed and compared to infrared and radio continuum data. The BGPS 1.1 mm emission consists of clumps interconnected by a network of fainter filaments surrounding cavities, a few of which are filled with diffuse near-IR emission indicating the presence of warm dust or with radio continuum characteristic of HII regions or supernova remnants. New 350 {\\mu}m images of the environments of the two brightest regions, Sgr A and B, are presented. Sgr B2 is the brightest mm-emitting clump in the Central Molecular Zone and may be forming the closest analog to a super star cluster in the Galaxy. The Central Molecular Zone (CMZ) contains the highest concentration of mm and sub-mm emitting dense clumps in the Galaxy. Most 1.1 mm features at positive longitudes are seen in silhouette against the 3.6 to 24 {\\mu}m background observed by the Spitzer Space Telescope. However, only a few clumps ...
Bally, John; Battersby, Cara; Bradley, Eric Todd; Cyganowski, Claudia; Dowell, Darren; Drosback, Meredith; Dunham, Miranda K; Evans, Neal J; Ginsburg, Adam; Glenn, Jason; Harvey, Paul; Mills, Elisabeth; Merello, Manuel; Rosolowsky, Erik; Schlingman, Wayne; Shirley, Yancy L; Stringfellow, Guy S; Walawender, Josh; Williams, Jonathan; 10.1088/0004-637X/721/1/137
Condensation heat transfer characteristics of R410A-oil mixture in 5 mm and 4 mm outside diameter horizontal microfin tubes
Condensation heat transfer characteristics of R410A-oil mixture in 5 mm and 4 mm outside diameter horizontal microfin tubes were investigated experimentally. The experimental condensing temperature is 40 C, and nominal oil concentration range is from 0% to 5%. The test results indicate that the presence of oil deteriorates the heat transfer. The deterioration effect is negligible at nominal oil concentration of 1%, and becomes obvious with the increase of nominal oil concentration. At 5% nominal oil concentration, the heat transfer coefficient of R410A-oil mixture is found to have a maximum reduction of 25.1% and 23.8% for 5 mm and 4 mm tubes, respectively. The predictabilities of the existing condensation heat transfer correlations were verified with the experimental data, and Yu and Koyama correlation shows the best predictability. By replacing the pure refrigerant properties with the mixture's properties, Yu and Koyama correlation has a deviation of -15% to + 20% in predicting the local condensation heat transfer coefficient of R410A-oil mixture. (author)
Huang, Xiangchao; Ding, Guoliang; Hu, Haitao; Zhu, Yu. [Institute of Refrigeration and Cryogenics, Shanghai Jiaotong University, Shanghai 200240 (China); Gao, Yifeng [International Copper Association Shanghai Office, Shanghai 200020 (China); Deng, Bin [Institute of Heat Transfer Technology, Golden Dragon Precise Copper Tube Group Inc., Shanghai 200135 (China)
Space Systems
Oct 20, 2010 ... Three months after installation, vibration was observed in a camera ... Space Station (ISS) experienced a failure with its starboard Solar Array�...
Space design
Space stations, Moon bases and Mars bases are artificial habitats intended to support human life in extreme conditions. Their purpose is to pursue human progress and to gain knowledge and experience of the environment surrounding our planet. This research ... Keywords: Human factors, Interior design, Space habitability, Sustainability, Vision
Irene Lia Schlacht; Henrik Birke
Development and Tests of a New Distributed-Memory MM5 Adjoint
Updated versions of the Tangent Linear Model (TLM) and adjoint of the fifth-generation Pennsylvania State University�National Center for Atmospheric Research Mesoscale Model (MM5) have been developed and are now available to the meteorological ...
Frank H. Ruggiero; John Michalakes; Thomas Nehrkorn; George D. Modica; Xiaolei Zou
Sensitivity of MM5-Simulated Boundary Layer Characteristics to Turbulence Parameterizations
The sensitivity of high-resolution mesoscale simulations to boundary layer turbulence parameterizations is investigated using the fifth-generation Pennsylvania State University�NCAR Mesoscale Model (MM5) and observations from two field campaigns. ...
Larry K. Berg; Shiyuan Zhong
Evaluation of Meteorological Models MM5 and HOTMAC Using PAFEX-I Data
Two meteorological models, the fifth-generation Pennsylvania State University�National Center for Atmospheric Research Mesoscale Model (MM5) and the hydrostatic version of the Higher-Order Turbulence Model for Atmospheric Circulation (HOTMAC), ...
Sang-Mi Lee; Harindra J. S. Fernando
Short-Term Performance of MM5 with Cloud-Cover Assimilation from Satellite Observations
This study investigates the extent to which assimilating high-resolution remotely sensed cloud cover into the fifth-generation Pennsylvania State University�National Center for Atmospheric Research (PSU�NCAR) Mesoscale Model (MM5) provides an ...
Ismail Yucel; W. James Shuttleworth; X. Gao; S. Sorooshian
Quantitative Spatiotemporal Evaluation of Dynamically Downscaled MM5 Precipitation Predictions over the Tampa Bay Region, Florida
This research quantitatively evaluated the ability of the fifth-generation Pennsylvania State University�National Center for Atmospheric Research Mesoscale Model (MM5) to reproduce observed spatiotemporal variability of precipitation in the Tampa ...
Syewoon Hwang; Wendy Graham; Jos� L. Hern�ndez; Chris Martinez; James W. Jones; Alison Adams
Upper-Troposphere MM5 and WRF Temperature Error and Vertical Velocity Coupling
The fifth-generation Pennsylvania State University�National Center for Atmospheric Research Mesoscale Model (MM5) and the Weather Research and Forecasting Model (WRF) have been employed to predict troposphere temperatures for atmospheric study and ...
Kelly Soich; Bernhard Rappenglueck
Assessing the Performance of 5mm White LED Light Sources for Developing-Country Applications
Stewart Craine collected the LED samples in Shenzen, China4. Variation in efficacy of LEDs tested. Figure 5. Figure 6.Performance of 5mm White LED Light Sources for Developing-
Mills, Evan
Implementation of the CIP as the Advection Solver in the MM5
A semi-Lagrangian-type advection scheme, cubic-interpolated pseudoparticle (CIP) method is implemented to the fifth-generation Pennsylvania State University�NCAR Mesoscale Model (MM5, version 3.4). A dimensional splitting CIP algorithm, with ...
Xindong Peng; Feng Xiao; Takashi Yabe; Keiji Tani
Power supply switching for a mm-wave asymmetric multilevel outphasing power amplifier system
This thesis demonstrates power switches to be used in our new Asymmetric Multilevel Outphasing (AMO) transmitter architecture at mm-wave frequencies. The AMO topology breaks the linearity vs. efficiency design objective ...
Spaulding, Jonathon David
System and method for weighing and characterizing moving or stationary vehicles and cargo
A weigh-in-motion device and method having at least one transducer pad, each transducer pad having at least one transducer group with transducers positioned essentially perpendicular to the direction of travel. At least one pad microcomputer is provided on each transducer pad having a means for calculating first output signal indicative of weight, second output signal indicative of time, and third output signal indicative of speed. At least one host microcomputer is in electronic communication with each pad microcomputer, and having a means for calculating at least one unknown selected from the group consisting of individual tire weight, individual axle weight, axle spacing, speed profile, longitudinal center of balance, and transverse center of balance.
Beshears, David L [Knoxville, TN; Scudiere, Matthew B [Oak Ridge, TN; White, Clifford P [Seymour, TN
On the nonexistence of $[\\binom{2m}{m-1}, 2m, \\binom{2m-1}{m-1}]$, $m$ odd, complex orthogonal design
Complex orthogonal designs (CODs) are used to construct space-time block codes. COD $\\mathcal{O}_z$ with parameter $[p, n, k]$ is a $p\\times n$ matrix, where nonzero entries are filled by $\\pm z_i$ or $\\pm z^*_i$, $i = 1, 2,..., k$, such that $\\mathcal{O}^H_z \\mathcal{O}_z = (|z_1|^2+|z_2|^2+...+|z_k|^2)I_{n \\times n}$. Adams et al. in "The final case of the decoding delay problem for maximum rate complex orthogonal designs," IEEE Trans. Inf. Theory, vol. 56, no. 1, pp. 103-122, Jan. 2010, first proved the nonexistence of $[\\binom{2m}{m-1}, 2m, \\binom{2m-1}{m-1}]$, $m$ odd, COD. Combining with the previous result that decoding delay should be an integer multiple of $\\binom{2m}{m-1}$, they solved the final case $n \\equiv 2 \\pmod 4$ of the decoding delay problem for maximum rate complex orthogonal designs. In this paper, we give another proof of the nonexistence of COD with parameter $[\\binom{2m}{m-1}, 2m, \\binom{2m-1}{m-1}]$, $m$ odd. Our new proof is based on the uniqueness of $[\\binom{2m}{m-1}, 2m-1, \\binom{...
Li, Yuan
Metric spaces with unique pretangent spaces
We find necessary and sufficient conditions under which an arbitrary metric space $X$ has a unique pretangent space at the marked point $a\\in X$. Key words: Metric spaces; Tangent spaces to metric spaces; Uniqueness of tangent metric spaces; Tangent space to the Cantor set.
Dovgoshey, Oleksiy; Kugukaslan, Mehmet
Excited states of the bacteriochlorophyll b dimer of rhodopseudomonas viridis. A QM/MM study of the photosynthetic reaction center that includes MM polarization
We present a hybrid quantum mechanical/molecular mechanical (QM/MM) model for microscopic solvation effects that includes polarizability in the MM region (QM/MMpol). QM/MMpol treatment of both ground and excited states is presented in the formalism. We present QM/MMpol analysis of the ground and electronic excited states of the bacteriochlorophyll b dimer (P) of the photosynthetic reaction center (RC) of Rhodopseudomonas viridis using the INDO/S method. The static-charge potential from the MM model of the RC alone causes Q{sub y1} to have significantly better agreement with the Stark effect results than isolated P. However, consideration of the protein polarization potential is further required to obtain more complete agreement with Stark effect experiments. Thus, we calculate a Q{sub y1} transition energy at 10826 cm{sup -1} with a ground to excited state change in dipole moment of 4.8 D; an absorption Stark effect angle of 43{degree}; a net shift of 0.15 electrons from the L subunit to the M subunit of P; and a linear dichroism angle (between the transition moment of Q{sub y1} and the pseudo-C{sub 2} axis of the RC) of 81{degree}. These results are in good agreement with experiment. Interestingly, we find that net CT increase is greater for Q{sub y1} than for the second excited state of P (Q{sub y2}), a result that we anticipated in an early model dimer study. 77 refs., 3 figs., 2 tabs.
Thompson, M.A.; Schenter, G.K. [Pacific Northwest Lab., Richland, WA (United States)
High-repetition-rate femtosecond optical parametric oscillator�amplifier system near 3 mm
An ultrafast laser system for the chemically important 3-mm spectral region has been constructed by means of noncritically phased-matched KTiOPO4 optical parametric gain elements. An optical parametric oscillator, synchronously pumped by a mode-locked Ti:sapphire oscillator, generates high-quality seed pulses for an optical parametric amplifier. The optical parametric amplifier, pumped by a high-repetition-rate Ti:sapphire regenerative amplifier, amplifies the seed pulses by a factor of 520. Pulses with an energy of 550 nJ and a pulse width of 160 fs are produced at a 250-kHz repetition rate in the 3-mm region. 1.
Gary R. Holtom; Robert A. Crowell; X. Sunney Xie
Microsoft Word - NO-MM-827 New Orleans Emergency Generator Installation (900 building).docx
MM-827 MM-827 Title: New Orleans Emergency Generator Installation (900 Building) Description: Subcontractor shall provide all labor, tools, materials, equipment, and supervision required to relocate the New Orleans emergency generator at the 900 building, to install a new Automatic Transfer Switch, and to provide generator status alarms. Tasks includes construction of a new concrete slab foundation, relocation of the existing portable generator from the trailer to the foundation, electrical installation of the generator, installation of fencing around the generator, and miscellaneous architectural work. Some of the existing equipment and components being dismantled, removed or demolished have been designated for government salvage. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021)
CARGO HANDLING COOPERATIVE PROGRAM Program Sector: Agile Port and Terminal Systems Technologies
this document, the CHCP tested and evaluated the operation of selected radio frequency (RF) based e-seals. Electronic seals were evaluated from four manufacturers that are currently supplying electronic container seals to the marketplace. In addition, the CHCP also evaluated one non-RF e-seal solution. This product has similar functionality, in terms of security and data, as the other tested e-seals but uses a contact memory linkage to transmit data instead of an RF link. As part of the current effort, the CHCP first tested each of the evaluated RF eseals in a laboratory to determine baseline communication performance both in free space and mounted on a container. Each seal was then evaluated for readability in three different field environments: on a container being moved through a container terminal gate, on a container moving along an open road, and on a simulated container being moved on a double-stack rail car. Seals were tested to not only determine how the technologies perform in these real-world environments but also to evaluate the various trade-offs that exist with e-seal design and the potential impact of those trade-offs on functionality, reliability, utility, and cost. The goal of this effort was not to select a "winner" (i.e., a seal which would become an industry standard) but rather to develop the technical baseline that will help government and industry stake-holders select appropriate solutions based on security, operational, and economic requirements. As such, testing and evaluation was completed not to provide a head-to-head comparison of eseals from different manufacturers but instead to identify the major design tradeoffs that exist between the various seals and to identify how these design tradeoffs might effect the deployment and performance of t...
Program Element Cargo; Subcontract S-chcp
A self-consistent MoD-WM/MM structural refinement method: characterization of hydrogen bonding in the orytricha nova G-1uar
This paper generalizes the MoD-QM/MM hybrid method, developed for ab initio computations of protein electrostatic potentials [Gasc6n, l.A.; Leung, S.S.F.; Batista, E.R.; Batista, V.S. J. Chem. Theory Comput. 2006,2, 175-186], as a practical algorithm for structural refinement of extended systems. The computational protocol involves a space-domain decomposition scheme for the formal fragmentation of extended systems into smaller, partially overlapping, molecular domains and the iterative self-consistent energy minimization of the constituent domains by relaxation of their geometry and electronic structure. The method accounts for mutual polarization of the molecular domains, modeled as Quantum-Mechanical (QM) layers embedded in the otherwise classical Molecular-Mechanics (MM) environment according to QM/MM hybrid methods. The method is applied to the description of benchmark models systems that allow for direct comparisons with full QM calculations, and subsequently applied to the structural characterization of the DNA Oxytricha nova Guanine quadruplex (G4). The resulting MoD-QM/MM structural model of the DNA G4 is compared to recently reported highresolution X-ray diffraction and NMR models, and partially validated by direct comparisons between {sup 1}H NMR chemical shifts that are highly sensitive to hydrogen-bonding and stacking interactions and the corresponding theoretical values obtained at the density functional theory DFT QM/MM (BH&H/6-31 G*:Amber) level in conjunction with the gauge independent atomic orbital (GIAO) method for the ab initio self consistent-field (SCF) calculation of NMR chemical shifts.
Batista, Enrique R [Los Alamos National Laboratory; Newcomer, Micharel B [YALE UNIV; Raggin, Christina M [YALE UNIV; Gascon, Jose A [YALE UNIV; Loria, J Patrick [YALE UNIV; Batista, Victor S [YALE UNIV
Purchasing Common Goods and Services: MM0001 Effective Date: May 7, 1997
) Maintenance/Replacement Work Order Physical Plant (Work Order Desk) Building alterations CFR P.P. & C. (Senior Services Short Form Agreement Materiel Management (Director of Materiel Management) Policy: MM0004 Management that (a) the goods or services are not available either from commercial sources or from
California at Santa Cruz, University of
MM5 Ensemble Mean Forecasts in the Taiwan Area for the 2003 Mei-Yu Season
This paper presents an evaluation study of a real-time fifth-generation Pennsylvania State University�NCAR Mesoscale Model (MM5) mesoscale ensemble prediction system in the Taiwan area during the 2003 mei-yu season. The ensemble system consists ...
Fang-Ching Chien; Yi-Chin Liu; Ben Jong-Dao Jou
Prediction of ozone levels in London using the MM5-CMAQ modelling system
Air pollution in urban areas has important implications for health and environmental management. Consequently, various methodologies have been developed for its assessment. Traditionally, simple approaches such as the box model or the Gaussian plume ... Keywords: Atmospheric modelling, CMAQ, MM5, Ozone, Urban air quality
R. S. Sokhi; R. San Jos�; N. Kitwiroon; E. Fragkou; J. L. P�rez; D. R. Middleton
On Sojourn Times in the Finite Capacity $M/M/1$ Queue with Processor Sharing
We consider a processor shared $M/M/1$ queue that can accommodate at most a finite number $K$ of customers. We give an exact expression for the sojourn time distribution in the finite capacity model, in terms of a Laplace transform. We then give the tail behavior, for the limit $K\\to\\infty$, by locating the dominant singularity of the Laplace transform.
Zhen, Qiang
Final report of the SPS space transportation workshop
After a brief description of space power system concepts and the current status of the SPS program, issues relevant to earth-surface-to-low-earth-orbit (ESLEO) and orbit-to-orbit transport are discussed. For ESLEO, vehicle concepts include shuttle transportation systems, heavy lift launch vehicles, and single-stage-to-orbit vehicles. Orbit transfer vehicle missions include transport of cargo and the SPS module from low earth orbit to geosynchronous earth orbit as well as personnel transport. Vehicles discussed for such missions include chemical rocket orbital transfer vehicles, and electric orbital transfer vehicles. Further discussions include SPS station-keeping and attitude control, intra-orbit transport, and advanced propulsion and vehicle concepts. (LEW)
Not Available
Microsoft Word - WH-MM-818B-819B NEPA.docx
8B & WH-MM-819B 8B & WH-MM-819B Title: Repair WH Brine Tanks, WHT-14 & WHT-15 Description: Subcontractor shall shall provide all materials, tools, equipment, supplies, transportation, facilities, labor, supervision, and services required to perform the work associated with the repair of the WH Brine Tanks, WHT-14 & WHT-15. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment (categorical exclusions). (b) To find that a proposal is categorically excluded, DOE shall determine the following:
RECORD OF CATEGORICAL EXCLUSION DETERMINATION Project ID No. WH-MM-1000
MM-1000 MM-1000 Title: Inspection and Repair of WH-SUN 42-inch Crude Oil Pipeline Description: Subcontractor shall provide all supervision, transportation, labor, materials and equipment required to locate, excavate, and inspect an internal corrosion anomaly at two locations on the WH to SUN Terminal 42-inch crude oil pipeline. Inspections will be performed by Automated Ultrasonic Testing. Repairs shall be performed based on the inspection results. All work will be performed on the DOE pipeline right-of-way. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment
RECORD OF CATEGORICAL EXCLUSION DETERMINATION Project 10 No. BH-MM-746
BH-MM-746 BH-MM-746 Title: BH Anhydrite Pond Liner Replacement Description: Subcontractor shall provide all labor, tools, equipment, materials, consumables, services, insurance, transportation, storage and supervision required to replace the BH Anhydrite Pond Liner. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment (categorical exclusions). (b) To find that a proposal is categorically excluded, DOE shall determine the following: (1) The proposed action fits within a class of actions that is listed in Appendix A or B of Subpart D;
650 mm long liquid hydrogen target for use in a high intensity electron beam
This paper describes a 650 mm long liquid hydrogen target constructed for use in the high intensity electron beam at the Stanford Linear Accelerator Center. The main design problem was to construct a target that would permit the heat deposited by the electron beam to be removed rapidly without boiling the hydrogen so as to maintain constant target density for optimum data taking. Design requirements, construction details and operating experience are discussed.
Mark, J.W.
This paper describes a 650 mm long liquid hydrogen targetr constructed for use in the high intensity electron beam at the Stanford Linear Accelerator Center (SLAC). The main design problem was to construct a target that would permit the heat deposited by the electron beam to be removed rapidly without boiling the hydrogen so as to maintain constant target density for optimum data taking. Design requirements, cosntruction details and operating experience are discussed.
Evaluation of MM5 Optically Thin Clouds over Europe in Fall Using ICESat Lidar Spaceborne Observations
The description of clouds in mesoscale models has progressed significantly during recent years by improving microphysical schemes with more physical parameterizations deduced from observations. Recently, the first lidar in space, the Ice, Cloud, ...
H. Chepfer; M. Chiriaco; R. Vautard; J. Spinhirne
Design of a smart, survivable sensor system for enhancing the safe and secure transportation of hazardous or high-value cargo on railroads
An application of smart sensor technology developed by Sandia National Laboratories for use in the safe and secure transportation of high value of hazardous materials is proposed for a railroad application. The Green Box would be capable of surviving most typical railroad accidents. In an accident, the system would send a distress signal notifying authorities of the location and condition of the cargo; permitting them to respond in the most effective manner. The concept proposes a strap-on sensor package, the Green Box, that could be attached to any railroad car or cargo container. Its primary purpose is to minimize the number, severity and consequences of accidents and to reduce losses due to theft. The system would also be capable of recognizing component failure conditions, notifying the operators and logging sensor data for use in directing preventative maintenance. The modular implementation, which facilitates system integration in a number of applications including the Advanced Train Control System (ACTS), is discussed. The methodology for determining the environmental specification for accident survivability is presented. A test plan for evaluating hardware performance in both normal operating and accident conditions is described.
Hogan, J.R.; Rey, D.; Faas, S.E.
Fe/Al2O3 C2H4 Hata mm/10 min
Fe/Al2O3 C2H4 () () () () () () () * () 1. (SWNT) SWNT (CVD) (CNT)[1] Hata mm/10 min SWNT (Super Growth)[2]Al2O3 Fe C2H4 SWNT Fe/Al2O3 C2H4 CVD SWNT CNT CNT 2 SiO2 Al2O3 20 (RBM) 1350 cm-1 (D-Band)Fe G/D RBM Fe SWNT Al 15 nm Fe 0.6 nm CVD TEM Fig. 3 3 nm SWNT
Maruyama, Shigeo
86 GHz polarimetry of OVV1633+382 after a major mm flare
The 18 mag QSO 1633+382 (4C38.41, z=1.807) showed a very pronounced outburst in 2001/2002. With a peak amplitude of more than 9 Jy at 90GHz, this flare was brighter than any known previous flare in this source (data available since 1980).During onset, the mm-flare was particulary fast, with an increase of more than 2 Jy at 230 GHz in less than 8 days. Since January 2002, the mm-flux of 1633+382 is decaying. During this decline, however, local flux variations with amplitudes of 1-3 Jy were seen, indicative of underlying and more rapid source activity on time scales of 1-2 months. After the main peak occurring in 2001.99, the 90 GHz flux showed secondary maxima at approximately half year intervals in 2002.3, 2002.7 and 2003.13. This kind of periodicity might be explained via the lighthouse model (Camenzind and Krockenberger 1992), which is based on the magnetic accelerator of Blanford and Payne (1982). At present the millimeter flux is nearly back to its quiescent level of 2-2.5 Jy, which the source had before ...
Sohn, B W; Agudo, I; Witzel, A; Zensus, J A; Ungerechts, H; Terasranta, H
Exploration mission enhancements possible with power beaming. [Space Applications Power Beaming
A key factor in the exploration and development of the space frontier is the availability of energy where and when it is needed. Currently all space satellites and platforms include self-contained power systems that supply the energy necessary to accomplish mission objectives. An alternative approach is to couple advanced high power system with energy beam transmitters and energy receivers to form an infrastructure of a space power utility where a central power system provides power to multiple users. Major space activities, such as low Earth orbit space commercialization and the colonization of the Moon or Mars, would benefit significantly from a central power generation and transmission system. This paper describes the power-beaming concept and system components as applied to space power generation and distribution in support of the Space Exploration Initiative. Beam-power scenarios are discussed including commonality of systems and hardware with cargo transport vehicles, power beaming from orbit to stationary and mobile users on the Lunar and Mars surfaces, and other surface applications. 6 refs.
Bamberger, J.A.; Coomes, E.P. (Pacific Northwest Lab., Richland, WA (USA)); Segna, D.R. (USDOE Richland Operations Office, WA (USA))
Exploring the Multidimensional Free Energy Surface of Phosphoester Hydrolysis with Constrained QM/MM Dynamics
Exploring the Multidimensional Free Energy Surface of Phosphoester Hydrolysis with Constrained QM water. Detailed free energy landscapes in two-dimensional and three-dimensional space were resolved that was demonstrated to be powerful for free energy calculations along multiple coordinates. As in previous theoretical
Gerwert, Klaus
Assessing the Performance of 5mm White LED Light Sources forDeveloping-Country Applications
Some white light-emitting diode (LED) light sources haverecently attained levels of efficiency and cost that allow them tocompete with fluorescent lighting for off-grid applications in thedeveloping world. Additional attributes (optics, size, ruggedness, andservice life) make them potentially superior products. Enormousreductions in energy use and greenhouse-gas emissions are thus possible,and system costs can be much lower given the ability to downsize thecharging and energy storage components compared to a fluorescentstrategy. However, there is a high risk of "market-spoiling" if inferiorproducts are introduced and result in user dissatisfaction. Completesystems involve the integration of light sources and optics, energysupply, and energy storage. A natural starting point for evaluatingproduct quality is to focus on the individual light sources. This reportdescribes testing results for batches of 10 5mm white LEDs from 26manufacturers. Efficacies and color properties are presented.
Expansion of Bound-State Energies in Powers of m/M
We describe a new approach to computing energy levels of a non-relativistic bound-state of two constituents with masses M and m, by a systematic expansion in powers of m/M. After discussing the method, we demonstrate its potential with an example of the radiative recoil corrections to the Lamb shift and hyperfine splitting relevant for the hydrogen, muonic hydrogen, and muonium. A discrepancy between two previous calculations of O({alpha}(Z{alpha}){sup 5} m{sup 2}/M) radiative recoil corrections to the Lamb shift is resolved and several new terms of O({alpha}(Z{alpha}){sup 5} m{sup 4}/M{sup 3}) and higher are obtained.
Customer Equilibrium and Optimal Strategies in an M/M/1 Queue with Dynamic Service Control
We consider the problem of customer equilibrium strategies in an M/M/1 queue under dynamic service control. The service rate switches between a low and a high value depending on system congestion. Arriving customers do not observe the system state at the moment of arrival. We show that due to service rate variation, the customer equilibrium strategy is not generally unique, and derive an upper bound on the number of possible equilibria. For the problem of social welfare optimization, we numerically analyze the relationship between the optimal arrival rate, which maximizes the overall welfare of the customers, and the equilibrium ones as a function of various parameter values. We finally derive analytic solutions for the special case where the service rate switch occurs when the queue ceases to be empty.
Dimitrakopoulos, Y
SiO2 Fracture: Chemomechanics with a Machine-Learning Hybrid QM/MM Scheme |
Snapshot from a simulation of subcritical stress corrosion cracking in Snapshot from a simulation of subcritical stress corrosion cracking in silica in a wet environment, of the kind that will be carried out at the quantum mechanical level during this INCITE project. Silicon atoms are shown in grey, oxygen in red and hydrogen in white. The nanoscale mechanisms underlying stress corrosion cracking remain unclear and can only be elucidated with these kinds of non-uniform precision simulations, which will allow quantitative comparison with experiments for the first time. James Kermode, King's College London SiO2 Fracture: Chemomechanics with a Machine-Learning Hybrid QM/MM Scheme PI Name: James Kermode PI Email: King's College London Institution: firstname.lastname@example.com Allocation Program: INCITE Allocation Hours at ALCF: 125 Million
RECORD OF CATEGORICAL EXCLUSION DETERMINATION Project ID No. WH-MM-767A
A A Title: Replace Brine Disposal System Header to WH Brine Tanks, GFE Description: Manufacturer shall provide the piping and fittings associated with the replacement of the brine disposal system header to the WH Brine Tanks as Government Furnished Equipment (GFE). The manufacturer shall load all materials onto transports supplied by others. Installation will be performed by others under BM-MM-767. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment (categorical exclusions).
Sculpting space through sound
How does one experience space? What kind of information do humans collect in the process of constructing space in their mind? How does one begin to understand volume, light, texture, material, smell and sense of space? The ...
Nakagawa, Junko, 1975-
Space Solar Power Program
Information pertaining to the Space Solar Power Program is presented on energy analysis; markets; overall development plan; organizational plan; environmental and safety issues; power systems; space transportation; space manufacturing, construction, operations; design examples; and finance.
Arif, H.; Barbosa, H.; Bardet, C.; Baroud, M.; Behar, A.; Berrier, K.; Berthe, P.; Bertrand, R.; Bibyk, I.; Bisson, J.; Bloch, L.; Bobadilla, G.; Bourque, D.; Bush, L.; Carandang, R.; Chiku, T.; Crosby, N.; De Seixas, M.; De Vries, J.; Doll, S.; Dufour, F.; Eckart, P.; Fahey, M.; Fenot, F.; Foeckersperger, S.; Fontaine, J.E.; Fowler, R.; Frey, H.; Fujio, H.; Gasa, J.M.; Gleave, J.; Godoe, J.; Green, I.; Haeberli, R.; Hanada, T.; Ha
Rapid Variability: What do we learn from correlated mm-/gamma-ray variability in jets ?
Densely time sampled multi-frequency flux measurements of the extreme BL Lac object S5 0716+714 over the past three years allow us to study its broad-band variability, and the detailed underlying physics, with emphasis on the location and size of the emitting regions and the evolution with time. We study the characteristics of some prominent mm-/gamma-ray flares in the context of the shock-in-jet model and investigate the location of the high energy emission region. The rapid rise and decay of the radio flares is in agreement with the formation of a shock and its evolution, if a geometrical variation is included in addition to intrinsic variations of the source. We find evidence for a correlation between flux variations at gamma-ray and radio frequencies. A two month time-delay between gamma-ray and radio flares indicates a non-cospatial origin of gamma-rays and radio flux variations in S5 0716+714.
Rani, B; Fuhrmann, L; Lott, B; Boettcher, M; Zensus, J A
TITLE: AUTHOR(S) SUBMITTED TO: Mm EVOLUTIO:l C: S!LICIC
Office of Scientific and Technical Information (OSTI)
TITLE: TITLE: AUTHOR(S) SUBMITTED TO: Mm EVOLUTIO:l C: S!LICIC :s!:G:IIA CHAWERS AND THEIR RELATICNStiIP TO 9,1SJLTiC VOLCA~41!'O! John C. Eichelbercjer, R, Gooley "Syinposiuni on the Cr~st" sponsored by the Office of Naval ?esearch and Colorado Schoo' of Hines in Vail, CO, on fi/2-6/76. By occeplmc~ of this arricle for Wbliczrtion. the publisher recognizes tlw Gowxnmnt's (Iic+snsa} ri~htg in any copyright afid tha C+vernrmm and in authoriz% representatives IUIm unrestricted righr !oreprajum intiole or in pwt said article under any mpyrqhtw cured@ tlm publisher. The Los Alamos !kientifw L~boratot-y rsquems that rho publisher identify this article m work ~rformed undnrtha auspi?asof the U.S. Atomic EngWCommi~sion. of the university of California 105 AlAMOS, NEW MEXIC087544 /\ . . , ., UNITED GTATCS A't'5MlC ENE!fGY COM?-I15510N EVOLUTIOii CF SILICIC f!AGfMCiiA!WEF!S
The Sensitivity of Idealized Hurricane Structure and Development to the Distribution of Vertical Levels in MM5
In the course of studying the development of hurricanes using the fifth-generation Pennsylvania State University�National Center for Atmospheric Research Mesoscale Model (MM5), a relationship between storm intensity and the distribution of ...
Sytske K. Kimball; F. Carroll Dougherty
Value of Incorporating Satellite-Derived Land Cover Data in MM5/PLACE for Simulating Surface Temperatures
The Parameterization for Land�Atmosphere�Cloud Exchange (PLACE) module is used within the Fifth-Generation Pennsylvania State University�National Center for Atmospheric Research Mesoscale Model (MM5) to determine the importance of individual land ...
Todd M. Crawford; David J. Stensrud; Franz Mora; James W. Merchant; Peter J. Wetzel
Exhibit Space Reservation (PDF)
Zip: Country: E-mail Address: Telephone Number: Fax Number: Signature: Date: Please reserve _____ (quantity) 10' x 10' space at $1,100 each. Exhibit space�...
... OOF2: The Manual. Electric:SpaceCharge. Prev, 6.4.1. Material Properties, Next. Name. Electric:SpaceCharge � Spatial charge density. Details. ...
In Outer Space without a Space Suit?
The author proposes and investigates his old idea - a living human in space without the encumbrance of a complex space suit. Only in this condition can biological humanity seriously attempt to colonize space because all planets of Solar system (except the Earth) do not have suitable atmospheres. Aside from the issue of temperature, a suitable partial pressure of oxygen is lacking. In this case the main problem is how to satiate human blood with oxygen and delete carbonic acid gas (carbon dioxide). The proposed system would enable a person to function in outer space without a space suit and, for a long time, without food. That is useful also in the Earth for sustaining working men in an otherwise deadly atmosphere laden with lethal particulates (in case of nuclear, chemical or biological war), in underground confined spaces without fresh air, under water or a top high mountains above a height that can sustain respiration.
Alexander Bolonkin
Transformations of Grassman Spaces
This is a version of a part of the book ``Transformations of Grassman Spaces'' (in progress). We study transformations of Grassman spaces preserving certain geometrical constructions related to buildings. The next part will be devoted to Grassman spaces associated with polar spaces.
Mark Pankov
Space System Architecture
Final Report of SSPARC: the Space Systems, Policy, and Architecture Research Consortium (Thrust II and III)
McManus, Dr. Hugh
The south central Texas heavy rain event of October 1998: an MM5 simulation and diagnosis of convective initiation
During the weekend of 17-18 October 1998, extremely heavy rainfall over south central Texas resulted in widespread flash flooding and numerous river floods. Southern Hays County received 760 mm of rainfall, and an area of 18,000 km� recorded over 250 mm. The convection began in a weakly forced environment well ahead of a cold front that was forecast to trigger the storms. The Penn State University/NCAR Mesoscale Model version 5 (MM5) was used to diagnose the extent and magnitude of upward motion, the convective potential of the environment, and the causes of the upward motion that contributed to the convective initiation. A rainfall analysis constructed from all available observations and radar estimates was used for a quantitative comparision with the MM5-simulated rainfall. The MM5's success in simulating many aspects of the rainfall suggested that the atmospheric processes that brought about this heavy rain event were also present in the model simulation. Using a 48-km model grid, upward motion was found to be more than sufficient to cause deep convection in the conditionally unstable atmosphere of south Texas. The cause of the upward motion was attributed to differential warm advection focused by a low-level jet centered over the region where convection began.
Scott, Richard Kevin
A QM/MM Study on the Aqueous Solvation of the Tetrahydroxouranylate [UO?(OH)?]�? Complex Ion
We report a QM augmented QM/MM study on the coordination of the tetrahydroxouranylate ion in aqueous solution. QM/MM geometry optimizations followed by full QM single-point calculations on the optimized structures show that a hexa-coordinated structure is more stable than the hepta-coordinated structure by 43 kJ/mol. Charge transfer of the tetrahydroxouranylate to the solvating water molecules is relatively modest, and can be modeled by including a solvation layer consisting of 12 explicit water molecules.
Infante, Ivan A.; van Stralen, Bas; Visscher, Lucas
NSLS Committees | Space Committee
Photon Sciences Space Committee Charge Purpose The Photon Sciences Directorate (PS) Space Committee is convened by the PS Chief Operating Officer (COO) on an as-needed basis to...
Topological Test Spaces
A test space is the set of outcome-sets associated with a collection of experiments. This notion provides a simple mathematical framework for the study of probabilistic theories -- notably, quantum mechanics -- in which one is faced with incommensurable random quantities. In the case of quantum mechanics, the relevant test space, the set of orthonormal bases of a Hilbert space, carries significant topological structure. This paper inaugurates a general study of topological test spaces. Among other things, we show that any topological test space with a compact space of outcomes is of finite rank. We also generalize results of Meyer and Clifton-Kent by showing that, under very weak assumptions, any second-countable topological test space contains a dense semi-classical test space.
Alexander Wilce
Small Space Heaters
Energy.gov (U.S. Department of Energy (DOE))
Small space heaters, also called portable heaters, are typically used when the main heating system is inadequate or when central heating is too costly to install or operate. Space heater capacities...
Modeling the ENSO Modulation of Antarctic Climate in the Late 1990s with the Polar MM5
The Polar fifth-generation Pennsylvania State University�NCAR Mesoscale Model (MM5) is employed to examine the El Ni�o�Southern Oscillation (ENSO) modulation of Antarctic climate for July 1996�June 1999, which is shown to be stronger than for the ...
David H. Bromwich; Andrew J. Monaghan; Zhichang Guo
THE ENVELOPE AND EMBEDDED DISK AROUND THE CLASS 0 PROTOSTAR L1157-mm: DUAL-WAVELENGTH INTERFEROMETRIC OBSERVATIONS AND MODELING
We present dual-wavelength observations and modeling of the nearly edge-on Class 0 young stellar object L1157-mm. Using the Combined Array for Research in Millimeter-wave Astronomy, a nearly spherical structure is seen from the circumstellar envelope at the size scale of 10{sup 2}-10{sup 3} AU in both 1 mm and 3 mm dust emission. Radiative transfer modeling is performed to compare data with theoretical envelope models, including a power-law envelope model and the Terebey-Shu-Cassen model. Bayesian inference is applied for parameter estimation and information criterion is used for model selection. The results prefer the power-law envelope model against the Terebey-Shu-Cassen model. In particular, for the power-law envelope model, a steep density profile with an index of {approx}2 is inferred. Moreover, the dust opacity spectral index {beta} is estimated to be {approx}0.9, implying that grain growth has started at L1157-mm. Also, the unresolved disk component is constrained to be {approx}<40 AU in radius and {approx}<4-25 M{sub Jup} in mass. However, the estimate of the embedded disk component relies on the assumed envelope model.
Chiang, Hsin-Fang; Looney, Leslie W. [Department of Astronomy, University of Illinois at Urbana-Champaign, 1002 West Green Street, Urbana, IL 61801 (United States); Tobin, John J., E-mail: firstname.lastname@example.com [National Radio Astronomy Observatory, Charlottesville, VA 22903 (United States)
Evaluation of MM5 and Eta-10 Precipitation Forecasts over the Pacific Northwest during the Cool Season
Precipitation forecasts from the Pennsylvania State University�National Center for Atmospheric Research Mesoscale Model (MM5) and NCEP�s 10-km resolution Eta Model (Eta-10) are verified over the Pacific Northwest in order to show the effects of ...
Brian A. Colle; Kenneth J. Westrick; Clifford F. Mass
Direct optoelectronic generation and detection of sub-ps-electrical pulses on sub-mm-coaxial transmission lines
-mm-coaxial transmission lines Tae-In Jeona) and D. Grischkowskyb) School of Electrical and Computer Engineering, OklahomaDirect optoelectronic generation and detection of sub-ps-electrical pulses on sub efficient direct optoelectronic generation of sub-ps-THz pulses on 50 coaxial transmission lines with a 330
Oklahoma State University
Chinese Statement on Joint Declaration in ITER MM -2 in Moscow XU Guanhua, Minister of Science and Technology
Chinese Statement on Joint Declaration in ITER MM - 2 in Moscow XU Guanhua, Minister of Science step towards the Joint Implementation of ITER, after several long-term and tough bilateral discussions Negotiation with other parties so as to prepare for an efficient start of joint implementation of ITER after
Evaluation of MM5 High-Resolution Real-Time Forecasts over the Urban Area of Athens, Greece
In this paper the fifth-generation Pennsylvania State University�National Center for Atmospheric Research Mesoscale Model (MM5) forecast skill over an area of complex terrain is evaluated. Namely, the model is verified over a period of 1 yr (2002)...
V. Kotroni; K. Lagouvardos
Neutron Tomography and Space
Propulsion Laboratory (JPL), uses a small Maxom motor on applications for manipulators in some of their space
Egbert, Hal; Walker, Ronald; Flocchini, R.
Strongly exponential symmetric spaces
We study the exponential map of connected symmetric spaces and characterize, in terms of midpoints and of infinitesimal conditions, when it is a diffeomorphism, generalizing the Dixmier-Saito theorem for solvable Lie groups. We then give a geometric characterization of the (strongly) exponential solvable symmetric spaces as those spaces for which every triangle admits a unique double triangle. This work is motivated by Weinstein's quantization by groupoids program applied to symmetric spaces.
Yannick Voglaire
Whither design space?
Design space exploration is a long-standing focus in computational design research. Its three main threads are accounts of designer action, development of strategies for amplification of designer action in exploration, and discovery of computational ... Keywords: Design Space Exploration, Knowledge Representation, Search, State Space, Typed Feature Structures
Robert F. Woodbury; Andrew L. Burrow
Progresses in Ab Initio QM/MM Free Energy Simulations of Electrostatic Energies in Proteins: Accelerated QM/MM Studies of pKa, Redox Reactions and Solvation Free Energies
Hybrid quantum mechanical / molecular mechanical (QM/MM) approaches have been used to provide a general scheme for chemical reactions in proteins. However, such approaches still present a major challenge to computational chemists, not only because of the need for very large computer time in order to evaluate the QM energy but also because of the need for propercomputational sampling. This review focuses on the sampling issue in QM/MM evaluations of electrostatic energies in proteins. We chose this example since electrostatic energies play a major role in controlling the function of proteins and are key to the structure-function correlation of biological molecules. Thus, the correct treatment of electrostatics is essential for the accurate simulation of biological systems. Although we will be presenting here different types of QM/MM calculations of electrostatic energies (and related properties), our focus will be on pKa calculations. This reflects the fact that pKa of ionizable groups in proteins provide one of the most direct benchmarks for the accuracy of electrostatic models of macromolecules. While pKa calculations by semimacroscopic models have given reasonable results in many cases, existing attempts to perform pKa calculations using QM/MM-FEP have led to large discrepancies between calculated and experimental values. In this work, we accelerate our QM/MM calculations using an updated mean charge distribution and a classical reference potential. We examine both a surface residue (Asp3) of the bovine pancreatic trypsin inhibitor, as well as a residue buried in a hydrophobic pocket (Lys102) of the T4-lysozyme mutant. We demonstrate that by using this approach, we are able to reproduce the relevant sidechain pKas with an accuracy of 3 kcal/mol. This is well within the 7 kcal/mol energy difference observed in studies of enzymatic catalysis, and is thus sufficient accuracy to determine the main contributions to the catalytic energies of enzymes. We also provide an overall perspective of the potential of QM/MM calculations in general evaluations of electrostatic free energies, pointing out that our approach should provide a very powerful and accurate tool to predict the electrostatics of not only solution but also enzymatic reactions, as well as the solvation free energies of even larger systems, such as nucleic acid bases incorporated into DNA.
Kamerlin, Shina C. L.; Haranczyk, Maciej; Warshel, Arieh
Berkeley Lab Space
Space Space Committee Charter Articles Presentations Feedback Contact Us ANNOUNCEMENTS Space Planning Advisory Committee (SPAC) The LBNL Space Planning Advisory Committee (SPAC) was chartered in January 2010 to help manage the growth, both in the short term as well as long term. Specifically, SPAC will recommend to senior laboratory management policies and procedures for the allocation and utilization of space and opportunities for increased efficiency. (For the complete charter, click here.)We welcome comments and suggestions. Our email is: firstname.lastname@example.com. SPAC (Space Planning Advisory Committee) SPAC Members Telephone Number Email Rich Diamond 510-486-4459 email@example.com Rich McClure 510-486-4486 email@example.com Diana Attia 510-486-7399 firstname.lastname@example.com Rebecca Rishell 510-486-6689
Gymnastics in Phase Space
As accelerator technology advances, the requirements on accelerator beam quality become increasingly demanding. Facing these new demands, the topic of phase space gymnastics is becoming a new focus of accelerator physics R&D. In a phase space gymnastics, the beam's phase space distribution is manipulated and precision tailored to meet the required beam qualities. On the other hand, all realization of such gymnastics will have to obey accelerator physics principles as well as technological limitations. Recent examples of phase space gymnastics include Emittance exchanges, Phase space exchanges, Emittance partitioning, Seeded FELs and Microbunched beams. The emittance related topics of this list are reviewed in this report. The accelerator physics basis, the optics design principles that provide these phase space manipulations, and the possible applications of these gymnastics, are discussed. This fascinating new field promises to be a powerful tool of the future.
Chao, Alexander Wu; /SLAC
Section D: SPACE HEATING
U.S. Energy Information Administration (EIA)
2005 Residential Energy Consumption Survey Form EIA-457A (2005)--Household Questionnaire OMB No.: 1905-0092, Expiring May 31, 2008 33 Section D: SPACE HEATING
Total Space Heat-
Gasoline and Diesel Fuel Update (EIA)
Released: September, 2008 Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other All Buildings...
Revised: December, 2008 Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other All Buildings*...
Passive solar space heating
An overview of passive solar space heating is presented indicating trends in design, new developments, performance measures, analytical design aids, and monitored building results.
Balcomb, J.D.
Released: September, 2008 Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other All Buildings*...
Revised: December, 2008 Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other All Buildings...
On Multi-Metric Spaces
A Smarandache multi-space is a union of $n$ spaces $A_1,A_2,..., A_n$ with some additional conditions holding. Combining Smarandache multi-spaces with classical metric spaces, the conception of multi-metric space is introduced. Some characteristics of a multi-metric space are obtained and Banach's fixed-point theorem is generalized in this paper.
Linfan Mao
Magnetic Materials (MM)
Safety and Training Divisions APS Engineering Support Division AES Groups Accelerator Systems Division ASD Groups X-ray Science Division XSD Groups Industry Argonne Home ...
Space bounds for resolution
We introduce a new way to measure the space needed in a resolution refutation of a CNF formula in propositional logic. With the former definition [6] the space required for the resolution of any unsatisfiable formula in CNF is linear in the number of ...
Juan Luis Esteban; Jacobo Tor�n
The metaplastic virtual spaces
Virtual reality systems need new metaphors for their communication. This paper presents a fuzzy enhanced semantic virtual space model. The application of the model tries to improve its conceptualization and definition of a new virtual world system. The ... Keywords: fuzzy, metaphysical, semantic spaces, synaesthesia, virtual reality
Gianluca Mura
Atoms for space
Nuclear technology offers many advantages in an expanded solar system space exploration program. These cover a range of possible applications such as power for spacecraft, lunar and planetary surfaces, and electric propulsion; rocket propulsion for lunar and Mars vehicles; space radiation protection; water and sewage treatment; space mining; process heat; medical isotopes; and self-luminous systems. In addition, space offers opportunities to perform scientific research and develop systems that can solve problems here on Earth. These might include fusion and antimatter research, using the Moon as a source of helium-3 fusion fuel, and manufacturing perfect fusion targets. In addition, nuclear technologies can be used to reduce risk and costs of the Space Exploration Initiative. 1 fig.
Buden, D.
Critical heat flux and boiling heat transfer to water in a 3-mm-diameter horizontal tube.
Boiling of the coolant in an engine, by design or by circumstance, is limited by the critical heat flux phenomenon. As a first step in providing relevant engine design information, this study experimentally addressed both rate of boiling heat transfer and conditions at the critical point of water in a horizontal tube of 2.98 mm inside diameter and 0.9144 m heated length. Experiments were performed at system pressure of 203 kPa, mass fluxes in range of 50 to 200 kg/m{sup z}s, and inlet temperatures in range of ambient to 80 C. Experimental results and comparisons with predictive correlations are presented.
Yu, W.; Wambsganss, M. W.; Hull, J. R.; France, D. M.
On Sojourn Times in the $M/M/1$-PS Model, Conditioned on the Number of Other Users
We consider the $M/M/1$-PS queue with processor sharing. We study the conditional sojourn time distribution of an arriving customer, conditioned on the number of other customers present. A new formula is obtained for the conditional sojourn time distribution, using a discrete Green's function. This is shown to be equivalent to some classic results of Pollaczeck and Vaulot from 1946. Then various asymptotic limits are studied, including large time and/or large number of customers present, and heavy traffic, where the arrival rate is only slightly less than the service rate.
Proposal for the award of a contract for the supply of 5 mm depleted-uranium plates for the UA1 calorimeter upgrading
Proposal for the award of a contract for the supply of 5 mm depleted-uranium plates for the UA1 experiment
National Aeronautics and Space Administration Space Shuttle Era Facts
System (STS), began its flight career with Columbia roaring off Launch Pad 39A at NASA's Kennedy SpaceNational Aeronautics and Space Administration NASAfacts Space Shuttle Era Facts NASA's shuttle fleet achieved numerous firsts and opened up space to more people than ever before during the Space
Tangent spaces to metric spaces and to their subspaces
We investigate a tangent space at a point of a general metric space and metric space valued derivatives. The conditions under which two different subspace of a metric space have isometric tangent spaces in a common point of these subspaces are completely determinated.
Dovgoshey, O
The sensitivity of the PSU-NCAR model (MM5) to cumulus parameterization in simulating the mesoscale environment associated with 2 June 1995 West Texas tornado outbreak
On 2 June 1995, many supercede thunderstorms were graphics. observed in West Texas between Lubbock and Amarillo under the synoptic and mesoscale environment which was increasingly more supportive of severe convection. Of the storms, those which crossed a particular outflow boundary, generated by earlier convection, produced violent tornadoes near Friona and Dimmitt, Texas. As documented in numerous other studies, the outflow boundary generated from the earlier convection seemed to play a important role in producing tornadic supercedes. This study presents observational features of the event, performs model simulations with three disparate cumulus parameterization schemes, and does a careful comparison between the simulations and observations. This study tries to understand the sequence of events which preceded the severe storm outbreak. Particularly, mesoscale features such as the dry line and outflow boundaries are carefully documented. Because of the significant impact of the convective outflow boundaries, this study tries to examine the sensitivity of the PSU/NCAR three dimensional nonhydrostatic mesoscale model (MM5) to the choice of cumulus parameterization scheme. The schemes used in this study include Kain-Fritsch, Fritsch-Chappell, and Grell schemes. The model simulation has a 67 x 67 grid domain centered at 35[] N and 102[] W with 27 km grid spacing, and starts at 12 UTC 2 June for 12-h forecast. The simulation results showed that, even though the general features agreed well among the three different simulations, the mesoscale features such as the outflow boundary, convective rain, temperature gradient, and pressure gradient associated with tee convective outflow were somewhat different among the different cumulus parameterizations. It seemed that the different behavior of the simulations was strongly dependent on the components constructing each cumulus parameterization. Despite the limitation of evidence suggested in this study, the Kain-Fritsch scheme appeared to be most suitable for the simulation of meso-[] scale features.
Han, Sang-Ok
On globally Symmetric Finsler spaces
The paper consider the symmetric of Finsler spaces. We give some conditions about globally symmetric Finsler spaces. Then we prove that these spaces can be written as a coset space of Lie group with an invariant Finsler metric. Finally, we prove that such a space must be Berwaldian
Khatamy, R Chavosh
Off-Shore Cargo Handling
... concepts. T-ACS (Tactical Auxiliary Crane Ship) RoboCrane. T- ACS_RoboCrane. ONR Mobile Offshore Base (MOB) Crane. ...
Live From Outer Space
Live from Outer Space: How Cells Influence the Growth of Nanostructures Live from Outer Space: How Cells Influence the Growth of Nanostructures Far above the heads of Earthlings, arrays of single-cell creatures embedded in nanostructures ride on the International Space Station (courtesy of Sandia National Laboratories and the University of New Mexico, NASA, and the U.S. Air Force) to test whether nanostructures whose formations were directed by yeast and other single cells can create more secure homes for their occupants-even in the vacuum and radiation of outer space-than those created by more standard chemical procedures. Cheap, tiny, and very lightweight sensors of chemical or biological agents could be made from long-lived cells that require no upkeep, yet sense and then communicate effectively with each other and their external
Space Mapping - Optimization Online
Thus, we can usec oP�to locally minimize the surrogatecoP that the space. mappingP provides for the fine model�.An alternative surrogate introduced byMadsen�...
Survey: Energy End-Use Consumption Tables Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other...
Simplified Space Conditioning
Simplified Space Conditioning Simplified Space Conditioning Duncan Prahl, RA IBACOS, Inc. Building America Technical Update April 29, 2013 Simplified Space Conditioning Rethinking HVAC Design * Traditional Method - Assume envelope losses dictate the load - Room by room load analysis - Pick Equipment and distribute to meet the load in each room * New Method - Consider how the occupants live in the building - Seriously consider internal gains in both heating and cooling - Consider ventilation strategy - Design system Simplified Space Conditioning If you are: * A production builder * Participating in "above code" programs * Following ACCA Manual RS or ASHRAE 55 * Need to prove "delivering heat to each habitable room" * Concerned about litigation * Play it safe, Use Manual J, S & D and condition every
Space Weather 101
This report describes the basic physical concepts associated with space weather that pertain to the effects on high-voltage power transmission systems. Space weather is an extremely complex and multi-faceted phenomenon. To focus on power grid�related effects, the report addresses coronal mass ejections, which are known to be the most important driver of large geomagnetically induced currents, and describes ongoing research that is being conducted to better understand, predict, and mitigate the ...
Beam Space Propulsion
Author offers a revolutionary method non-rocket transfer of energy and thrust into Space with distance of millions kilometers. The author has developed theory and made the computations. The method is more efficient than transmission of energy by high-frequency waves. The method may be used for space launch and for acceleration the spaceship and probes for very high speeds, up to relativistic speed by current technology. Research also contains prospective projects which illustrate the possibilities of the suggested method.
Simultaneous Radio to (Sub-) Mm-Monitoring of Variability and Spectral Shape Evolution of Potential GLAST Blazars
The Large Area Telescope (LAT) instrument onboard GLAST offers a tremendous opportunity for future blazar studies. In order to fully benefit from its capabilities and to maximize the scientific return from the LAT, it is of great importance to conduct dedicated multi-frequency monitoring campaigns that will result comprehensive observations. Consequently, we initiated an effort to conduct a GLAST-dedicated, quasi-simultaneous, broad-band flux-density (and polarization) monitoring of potential GLAST blazars with the Effelsberg and OVRO radio telescopes (11 cm to 7mm wavelength). Here, we present a short overview of these activities which will complement the multi-wavelengths activities of the GLAST/LAT collaboration towards the 'low-energy' radio bands. Further we will give a brief outlook including the extension of this coordinated campaign towards higher frequencies and future scientific aims.
Fuhrmann, L.; Zensus, J.A.; Krichbaum, T.P.; Angelakis, E.; /Bonn, Max Planck Inst., Radioastron.; Readhead, A.C.S.; /Caltech
Small space object imaging : LDRD final report.
We report the results of an LDRD effort to investigate new technologies for the identification of small-sized (mm to cm) debris in low-earth orbit. This small-yet-energetic debris presents a threat to the integrity of space-assets worldwide and represents significant security challenge to the international community. We present a nonexhaustive review of recent US and Russian efforts to meet the challenges of debris identification and removal and then provide a detailed description of joint US-Russian plans for sensitive, laser-based imaging of small debris at distances of hundreds of kilometers and relative velocities of several kilometers per second. Plans for the upcoming experimental testing of these imaging schemes are presented and a preliminary path toward system integration is identified.
Ackermann, Mark R.; Valley, Michael T.; Kearney, Sean Patrick
Parabolic John-Nirenberg spaces
We introduce a parabolic version of John-Nirenberg space with exponent $p$ and show that it is contained in local weak-$L^p$ spaces.
Berkovits, Lauri
Earth, Space Sciences
Earth, Space Sciences Earth, Space Sciences /science-innovation/_assets/images/icon-science.jpg Earth, Space Sciences National security depends on science and technology. The United States relies on Los Alamos National Laboratory for the best of both. No place on Earth pursues a broader array of world-class scientific endeavors. Climate, Ocean and Sea Ice Modeling (COSIM)» Earth A team of scientists is working to understand how local changes in hydrology might bring about major changes to the Arctic landscape, including the possibility of a large-scale carbon release from thawing permafrost. Bryan Travis, an expert in fluid dynamics, is author of the Mars global hydrology numerical computer model, or MAGHNUM, used for calculating heat and fluid transport phenomena. (MAGHNUM was previously
International Space Station Again
For the fifth time in 2 1/2 years, the International Space Station (ISS) had to execute a collision avoidance maneuver in early April to ensure a safe miss distance for a piece of orbital debris. As solar activity increases during the next few years, the frequency of ISS collision avoidance might increase as many hundreds of resident space objects drift down through the ISS orbital regime. The subject of concern in late March 2011 was a fragment from Cosmos 2251, the Russian communications satellite which had accidentally collided with the U.S. Iridium 33 communications satellite in February 2009, producing more than
Iss Airlock Shields; A Note On Active; A Publication Of
Demystifying White Spaces Xuemin Hongl
white spaces. The term "white space" refers to "spatial white space" in the rest of this paper cellular (planned) networks [9] and ad-hoc networks [10]. Different from previous works, in this paper weDemystifying White Spaces Xuemin Hongl , Cheng-Xiang Wangl , John Thompson2 , and Yan Zhang3 1Joint
Wang, Cheng-Xiang
2011 Confined Space Program Update
Confined Space Entry Program Update Confined Space Entry Program Update IMPORTANT: After reading this document, click the "Get Course Credit" link at the bottom of the page. You will then log in to the EHS training system using your LDAP to get course credit. LBNL's confined space entry program was substantially improved this year. Several new features have been included which improve overall safety for Confined Space Entrants and better align the confined space entry program with the OSHA requirements. As an Activity Lead, Confined Space Entrant or Entry Supervisor, you should be aware of the following: We improved the procedures for safely working in confined spaces. Please review the new Chapter 34 in Publication 3000. Additionally, we have a new planning tool known as the confined space inventory which is a registry of LBNL's confined spaces, their potential hazards and safe work procedures unique to a particular confined space.
Capacity on Finsler Spaces
Here, the concept of electric capacity on Finsler spaces is introduced and the fundamental conformal invariant property is proved, i.e. the capacity of a compact set on a connected non-compact Finsler manifold is conformal invariant. This work enables mathematicians and theoretical physicists to become more familiar with the global Finsler geometry and one of its new applications.
Bidabad, B
Programs on Product Spaces
We study program states that are described as tuples, i.e., product state spaces. We show how to add program variables and assignment notation to simply typed lambda calculus in order to describe functions, relations and predicate transformers on such ...
Ralph Back; Joakim Wright von
Coupling between the University of California, Davis, Advanced Canopy�Atmosphere�Soil Algorithm (ACASA) and MM5: Preliminary Results for July 1998 for Western North America
The University of California, Davis, Advanced Canopy�Atmosphere�Soil Algorithm (ACASA) is coupled to the fifth-generation Pennsylvania State University�National Center for Atmospheric Research (NCAR) Mesoscale Model (MM5) as a land surface ...
R. David Pyles; Bryan C. Weare; Kyaw Tha Paw U; William Gustafson
The Impact of GEM and MM5 Modeled Meteorological Conditions on CMAQ Air Quality Modeling Results in Eastern Canada and the Northeastern United States
The fifth-generation Pennsylvania State University�National Center for Atmospheric Research Mesoscale Model (MM5) is currently the meteorological model most widely used as input into the Community Multiscale Air Quality (CMAQ) modeling system. In ...
Steven C. Smyth; Dazhong Yin; Helmut Roth; Weimin Jiang; Michael D. Moran; Louis-Philippe Crevier
The 13�14 December 2001 IMPROVE-2 Event. Part II: Comparisons of MM5 Model Simulations of Clouds and Precipitation with Observations
This paper compares airborne in situ observations of cloud microphysical parameters with the fifth-generation Pennsylvania State University�National Center for Atmospheric Research (PSU�NCAR) Mesoscale Model (MM5) simulations, using the Reisner-2 ...
Matthew F. Garvert; Christopher P. Woods; Brian A. Colle; Clifford F. Mass; Peter V. Hobbs; Mark T. Stoelinga; Justin B. Wolfe
The Ability of MM5 to Simulate Ice Clouds: Systematic Comparison between Simulated and Measured Fluxes and Lidar/Radar Profiles at the SIRTA Atmospheric Observatory
The ability of the fifth-generation Pennsylvania State University�NCAR Mesoscale Model (MM5) to simulate midlatitude ice clouds is evaluated. Model outputs are compared to long-term meteorological measurements by active (radar and lidar) and ...
M. Chiriaco; R. Vautard; H. Chepfer; M. Haeffelin; J. Dudhia; Y. Wanherdrick; Y. Morille; A. Protat
Origins of the extragalactic background at 1mm from a combined analysis of the AzTEC and MAMBO data in GOODS-N
We present a study of the cosmic infrared background, which is a measure of the dust obscured activity in all galaxies in the Universe. We venture to isolate the galaxies responsible for the background at 1mm; with spectroscopic and photometric redshifts we constrain the redshift distribution of these galaxies. We create a deep 1.16mm map (sigma ~ 0.5mJy) by combining the AzTEC 1.1mm and MAMBO 1.2mm datasets in GOODS-N. This combined map contains 41 secure detections, 13 of which are new. By averaging the 1.16mm flux densities of individually undetected galaxies with 24um flux densities > 25uJy, we resolve 31--45 per cent of the 1.16mm background. Repeating our analysis on the SCUBA 850um map, we resolve a higher percentage (40--64 per cent) of the 850um background. A majority of the background resolved (attributed to individual galaxies) at both wavelengths comes from galaxies at z > 1.3. If the ratio of the resolved submillimeter to millimeter background is applied to a reasonable scenario for the origins o...
Penner, Kyle; Chapin, Edward L; Greve, Thomas R; Bertoldi, Frank; Brodwin, Mark; Chary, Ranga-Ram; Conselice, Christopher J; Coppin, Kristen; Giavalisco, Mauro; Hughes, David H; Ivison, Rob J; Perera, Thushara; Scott, Douglas; Scott, Kimberly; Wilson, Grant
Heat transfer characteristics of R410A-oil mixture flow boiling inside a 7 mm straight smooth tube
Two-phase flow patterns and heat transfer characteristics of R410A-oil mixture flow boiling inside a straight smooth tube with the outside diameter of 7.0 mm were investigated experimentally. The experimental conditions include the evaporation temperature of 5 C, the mass flux from 200 to 400 kg m{sup -2} s{sup -1}, the heat flux from 7.56 to 15.12 kW m{sup -2}, the inlet vapor quality from 0.2 to 0.7, nominal oil concentration from 0% to 5%. The test results show that the heat transfer coefficient of R410A-oil mixture increases with mass flux of refrigerant-oil mixture; the presence of oil enhances the heat transfer at the range of low and intermediate vapor qualities; there is a peak of local heat transfer coefficient at about 2-4% nominal oil concentration at higher vapor qualities, and the peak shifts to lower nominal oil concentration with the increasing of vapor qualities; higher nominal oil concentration gives more detrimental effect at high vapor qualities. The flow pattern map of R410A-oil mixture was developed based on refrigerant-oil mixture properties, and the observed flow patterns match well with the flow pattern map. New correlation to predict the local heat transfer of R410A-oil mixture flow boiling inside the straight smooth tube was developed based on flow patterns and local properties of refrigerant-oil mixture, and it agrees with 90% of the experiment data within the deviation of {+-}25%. (author)
Hu, Haitao; Ding, Guoliang; Wei, Wenjian; Wang, Zhence [Institute of Refrigeration and Cryogenics, Shanghai Jiaotong University, Shanghai 200240 (China); Wang, Kaijian [Fujitsu General Institute of Air-Conditioning Technology Limited, Kawasaki 213-8502 (Japan)
MHD Space Sailing
The rocket technology dates back as far as medieval China. Used initially for entertainment and religious practices over time rockets evolved into weapons and finally into means of transportation. Today, we are nearing the top of the rockets' capabilities. Although, for now they are the only way for us to send anything into space we are becoming more and more aware of the limitations of this technology. It is essential that we invent other means of propelling probes and other interplanetary vehicles through space. The authors had performed a series of magnetohydrodynamic simulations using the University of Chicago's Flash package to find out whether the interactions between the Solar Wind and the conducting ring with the electric current would occur. The MHD simulations gave the results similar to the monte-carlo calculations performed by dr Charles Danforth [1] from the University of Colorado. It is the authors' conclusion that the promising results should encourage further study of the phenomenon and the po...
Kisiel, T
Magnetic Space Launcher
A method and facilities for delivering payload and people into outer space are presented. This method uses, in general, engines located on a planetary surface. The installation consists of a space apparatus, power drive stations, which include a flywheel accumulator (for storage) of energy, a variable reducer, a powerful homopolar electric generator and electric rails. The drive stations accelerate the apparatus up to hypersonic speed. The estimations and computations show the possibility of making this project a reality in a short period of time (for payloads which can tolerate high g-forces). The launch will be very cheap at a projected cost of 3 - 5 dollars per pound. The authors developed a theory of this type of the launcher.
Alexander Bolonkin; Mark Krinker
Orbit Spaces in Superconductivity
In the framework of Landau theory of phase transitions one is interested to describe all the possible low symmetry ``superconducting'' phases allowed for a given superconductor crystal and to determine the conditions under which this crystal undergoes a phase transition. These problems are best described and analyzed in the orbit space of the high symmetry group of the ``normal, non-superconducting'' phase of the crystal. In this article it is worked out a simple example concerning superconductivity, that shows the P-matrix method to determine the equations and inequalities defining the orbit space and its stratification. This approach is of general validity and can be used in all physical problems that make use of invariant functions, as long as the symmetry group is compact.
Vittorino Talamini
Space Time Matter inflation
We study a model of power-law inflationary inflation using the Space-Time-Matter (STM) theory of gravity for a five dimensional (5D) canonical metric that describes an apparent vacuum. In this approach the expansion is governed by a single scalar (neutral) quantum field. In particular, we study the case where the power of expansion of the universe is $p \\gg 1$. This kind of model is more successful than others in accounting for galaxy formation.
Mariano Anabitarte; Mauricio Bellini
Dendrite Arm Spacing
...Casting processes Cooling rate Dendrite arm spacing °C/s °F/s μm mils Plaster, investment 1 1.80 100�??1000 3.94�??39.4 Green sand, shell 10 18.0 50�??500 1.97�??19.7 Permanent mold 100 180.0 30�??70 1.18�??2.76 Die 1000 1800 5�??15 0.20�??0.59...
Nowcasting for Space Shuttle Landings at Kennedy Space Center, Florida
Space shuttle launches and landings at Kennedy Space Center (KSC) are subject to strict weather-related launch commit criteria and landing weather flight rules. Complex launch commit criteria and end-of-mission landing weather flight rules demand ...
William H. Bauman III; Steven Businger
Lens space surgeries and L-space homology spheres
We describe necessary and sufficient conditions for a knot in an L-space to have an L-space homology sphere surgery. We use these conditions to reformulate a conjecture of Berge about which knots in S^3 admit lens space surgeries.
Rasmussen, Jacob
Symplectic space and orthogonal space of n qubits
In the Hilbert space of n qubits, we introduce the symplectic space (n odd) and the orthogonal space (n even) via the spin-flip operator. Under this mathematical structure we discuss some properties of n qubits, including homomorphically mapping the local operations of n qubits into the symplectic group or orthogonal group, and prove that the generalized ``magic basis'' is just the bi-orthonormal basis (that is, the orthonormal basis of both Hilbert space and the orthogonal space ). Finally, an example is given to discuss the application in physics of this mathematical structure.
Jian-Wei Xu
Particle simulations of space weather
We review the application of particle simulation techniques to the full kinetic study of space weather events. We focus especially on the methods designed to overcome the difficulties created by the tremendous range of time and space scales present in ... Keywords: Adaptive, Implicit, Particle-in-cell, Space weather
Giovanni Lapenta
Upgrading Below Grade Spaces
Patrick H. Huelman, Sam Breidenbach, Steve Schirber Patrick H. Huelman, Sam Breidenbach, Steve Schirber NorthernSTAR Building America Partnership Upgrading Below Grade Spaces Residential Energy Efficiency Stakeholder March 1, 2012 Austin, TX * Act 1: Technical Challenges & Opportunities - Pat Huelman, University of Minnesota * Act 2: Assessing Homeowner Priorities & Risks - Sam Breidenbach, TDS Custom Construction * Act 3: An Industry Perspective - Steve Schirber, Cocoon Act 1. Upgrade Below Grade * Basement Remodeling: It Doesn't Get Any Riskier! - Combustion safety - Foundation moisture - Radon (& other soil gases) - Biologicals (mold, dust mites, etc.) - Garage gases (if attached) * And front and center are uncontrolled... - negative pressures in basements (beyond stack)
space booklet_DOE
U U C L E A R E N E R G Y DOE/NE-0071 U . S . D e p a r t m e n t o f E n e r g y O f f i c e o f N u c l e a r E n e r g y , S c i e n c e a n d T e c h n o l o g y N UCLEAR Power in Space 2
Intelligent Satellite Teams Space Systems
This paper examines the development of Intelligent Satellite Teams (IST's) for complex space missions such as construction of space hardware, or Earth or space science. IST's are composed of many nanosatellites (mass control including formation flying, collision avoidance, knowledge sharing, and adaptive reconfiguration; microtechnology including microelectromechanical systems (MEMS), microfabricated sensors and actuators, nanotechnology, and integrated wireless communication; mission analysis -- high-level planning and control of mission, satellites, and procedures. Recent rapid technological advances in these fields open up exciting new possibilities for future space missions: space science missions such as testing gravitational variation, detecting and characterizing near-Earth asteroids and comets, and comprehensive exploration of the solar system; Earth science missions ...
Mark E. Campbell; Karl F. B�hringer
The rocket technology dates back as far as medieval China. Used initially for entertainment and religious practices over time rockets evolved into weapons and finally into means of transportation. Today, we are nearing the top of the rockets' capabilities. Although, for now they are the only way for us to send anything into space we are becoming more and more aware of the limitations of this technology. It is essential that we invent other means of propelling probes and other interplanetary vehicles through space. The authors had performed a series of magnetohydrodynamic simulations using the University of Chicago's Flash package to find out whether the interactions between the Solar Wind and the conducting ring with the electric current would occur. The MHD simulations gave the results similar to the monte-carlo calculations performed by dr Charles Danforth [1] from the University of Colorado. It is the authors' conclusion that the promising results should encourage further study of the phenomenon and the possibility of using it in practice.
T. Kisiel; M. Soida
Converting Unconditioned Basement to Conditioned Space - Code...
Conditioned Space - Code Notes Converting a basement to conditioned space increases the living space of a house. As with most construction activities, the conversion or...
AERaSPACE CORPORATION
Office of Legacy Management (LM)
THE ' THE ' AERaSPACE CORPORATION Suite 300, 955 L' &njon~ Pkzza. S. W., Washingvan. D.C. 200242174, Tekphanc (202) 488~6CllO 7117-03.87.cdy.43 23 September 1987 CA CA.Ot M r. Andrew Wallo, III. NE-23 Division of Facility & Site cr.05 Decommissioning Projects FL .0-d U.S. Department of Energy TAl.OL Germantown; Maryland 20545 JA/.OZ 1hJ . o-01 Dear M r. Wallo: flA.05 ELIMINATION RECOMMENDATION -- COLLEGES AND UNIVERSITIES M /4.0-* 11 D.OF The attached elimination recommendation was prepared in accordance ML.o= with your suggestion during our meeting on 22 September. The recommendation nO.o-02 includes 26 colleges and universities identified,in Enclosure 4 to Aerospace letter subject: Status of Actions - FUSRAP Site List, dated MO.03. 27 May 1987; three institutions (Tufts College, University of Virginia,
Exploring Lighting Spaces
We present a simple system for interactively specifying lighting parameters, including position, for high-quality image synthesis. Unlikeinverse approaches to the lighting-design problem, we do not require the user to indicate a priori the desired illuminative characteristics of an image. In our approach the computer proposes, culls, and organizes a set of candidate lights automatically, using an elementary measure of image similarityasthe basis for both culling and organization. The user then browses the set of candidate-light images, selects which lights to include, and combines them as desired. This work is a particular instance of a general strategy --- sampling a design space broadly and intelligently and organizing the results for rapid browsing by the user --- that may be applicable to many other design problems in computer graphics.
T. Kang; J. Seims; J. Marks; S. Shieber
Hilbert space of wormholes
Wormhole boundary conditions for the Wheeler--DeWitt equation can be derived from the path integral formulation. It is proposed that the wormhole wave function must be square integrable in the maximal analytic extension of minisuperspace. Quantum wormholes can be invested with a Hilbert space structure, the inner product being naturally induced by the minisuperspace metric, in which the Wheeler--DeWitt operator is essentially self--adjoint. This provides us with a kind of probabilistic interpretation. In particular, giant wormholes will give extremely small contributions to any wormhole state. We also study the whole spectrum of the Wheeler--DeWitt operator and its role in the calculation of Green's functions and effective low energy interactions.
Garay, L J
Coupling an Advanced Land Surface�Hydrology Model with the Penn State�NCAR MM5 Modeling System. Part I: Model Implementation and Sensitivity
This paper addresses and documents a number of issues related to the implementation of an advanced land surface�hydrology model in the Penn State�NCAR fifth-generation Mesoscale Model (MM5). The concept adopted here is that the land surface model ...
Fei Chen; Jimy Dudhia
Coupling an Advanced Land Surface�Hydrology Model with the Penn State�NCAR MM5 Modeling System. Part II: Preliminary Model Validation
A number of short-term numerical experiments conducted by the Penn State�NCAR fifth-generation Mesoscale Model (MM5) coupled with an advanced land surface model, alongside the simulations coupled with a simple slab model, are verified with ...
Internationalization of a Talking Head Ouni, S. Massaro, D.W., Cohen, M.M., Young, K. & Jesse, A.(2003). Internationalization
Internationalization of a Talking Head Ouni, S. Massaro, D.W., Cohen, M.M., Young, K. & Jesse, A and providing the test facilities. REFERENCES [1] D.W. Massaro, Perceiving Talking Faces, From Speech Perception to a Behavioral Principle, MIT Press, 1998. [2] A. Bosseler and D.W. Massaro, "Development and Evaluation
Cohen, Michael M.
Acceptability of reactors in space
Reactors are the key to our future expansion into space. However, there has been some confusion in the public as to whether they are a safe and acceptable technology for use in space. The answer to these questions is explored. The US position is that when reactors are the preferred technical choice, that they can be used safely. In fact, it does not appear that reactors add measurably to the risk associated with the Space Transportation System.
Reactors are the key to our future expansion into space. However, there has been some confusion in the public as to whether they are a safe and acceptable technology for use in space. The answer to these questions is explored. The US position is that when reactors are the preferred technical choice, that they can be used safely. In fact, it dies not appear that reactors add measurably to the risk associated with the Space Transportation System.
Entropic Gravity in Rindler Space
We show that Rindler horizons are entropic screens and gravity is an entropic force in Rindler space by deriving the Verlinde entropy formula from the focusing of light due to a mass close to the horizon. Consequently, gravity is also entropic in the near horizon regions of Schwarzschild and de Sitter space-times. In different limits, the entropic nature of gravity in Rindler space leads to the Bekenstein entropy bound and the uncertainty principle.
Halyo, Edi
Edi Halyo
No Prejudice in Space
We present a summary of recent results obtained from a scan of the 19-dimensional parameter space of the pMSSM and its implications for dark matter searches. We have generated a large set of points in parameter space (which we call 'models') for the 19-parameter CP-conserving pMSSM, where MFV has been assumed. We subjected these models to numerous experimental and theoretical constraints to obtain a set of {approx}68 K models which are consistent with existing data. We attempted to be somewhat conservative in our implementation of these constraints; in particular we only demanded that the relic density of the LSP not be greater than the measured value of {Omega}H{sup 2} for non-baryonic dark matter, rather than assuming that the LSP must account for the entire observed relic density. Examining the properties of the neutralinos in these models, we find that many are relatively pure gauge eigenstates with Higgsinos being the most common, followed by Winos. The relative prevalence of Higgsino and Wino LSPs leads many of our models to have a chargino as nLSP, often with a relatively small mass splitting between this nLSP and the LSP; this has important consequences in both collider and astroparticle phenomenology. We find that, in general, the LSP in our models provides a relatively small ({approx} 4%) contribution to the dark matter, however there is a long tail to this distribution and a substantial number of models for which the LSP makes up all or most of the dark matter. Typically these neutralinos are mostly Binos. Examining the signatures of our models in direct and indirect dark matter detection experiments, we find a wide range of signatures for both cases. In particular, we find a much larger range of WIMP-nucleon cross sections than is found in any particular model of SUSY-breaking. As these cross sections also enter the regions of parameter space suggested by non-SUSY models, it appears that the discovery of WIMPs in direct detection experiments might not be sufficient to determine the correct model of the underlying physics. As a first look at the signatures of these models in indirect detection experiments, we examined whether our models could explain the PAMELA excess in the positron to electron ratio at high energies. We find that there are models which fit the PAMELA data rather well, and some of these have significantly smaller boost factors than generally assumed for a thermal relic. The study of the pMSSM presents exciting new possibilities for SUSY phenomenology. The next few years will hopefully see important discoveries both in colliders and in satellite or ground-based astrophysical experiments. It is important that we follow the data and not our existing prejudices; hopefully this sort of relatively model-independent approach to collider and astrophysical phenomenology can be useful in this regard.
Cotta, R.C.; Gainer, J.S.; Hewett, J.L.; Rizzo, T.G.; /SLAC
A characterization of separable conjugate spaces
Necessary and sufficient conditions for a separable Banach space to be a dual space are proved. Some applications are discussed
Rossi, Stefano
Physics in discrete spaces (A): Space-Time organization
We put forward a model of discrete physical space that can account for the structure of space- time, give an interpretation to the postulates of quantum mechanics and provide a possible explanation to the organization of the standard model of particles.
P. Peretto
Released: September, 2008 Released: September, 2008 Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other All Buildings* ........................... 3,037 115 397 384 52 1,143 22 354 64 148 357 Building Floorspace (Square Feet) 1,001 to 5,000 ........................... 386 19 43 18 11 93 7 137 8 12 38 5,001 to 10,000 .......................... 262 12 35 17 5 83 4 56 6 9 35 10,001 to 25,000 ........................ 407 20 46 44 8 151 3 53 9 19 54 25,001 to 50,000 ........................ 350 15 55 50 9 121 2 34 7 16 42 50,001 to 100,000 ...................... 405 16 57 65 7 158 2 29 6 18 45 100,001 to 200,000 .................... 483 16 62 80 5 195 1 24 Q 31 56 200,001 to 500,000 .................... 361 8 51 54 5 162 1 9 8 19 43 Over 500,000 ............................. 383 8 47 56 3 181 2 12 8 23 43 Principal Building Activity
Measurement of Boundary-Layer Temperature Profiles by a Scanning 5-MM Radiometer During the 1999 Winter NSA/AAO Radiometer Exp
Boundary-Layer Temperature Profiles by Boundary-Layer Temperature Profiles by a Scanning 5-MM Radiometer During the 1999 Winter NSA/AAO Radiometer Experiment and WVIOP 2000 V. Y. Leuski and E. R. Westwater Cooperative Institute for Research in the Environmental Sciences National Oceanic and Atmospheric Administration Environmental Technology Laboratory University of Colorado Boulder, Colorado Introduction A scanning 5-mm-wavelength radiometer was deployed during two Intensive Operational Periods (IOPs) at the Atmospheric Radiation Measurement (ARM) Program's Cloud and Radiation Testbed (CART) facilities. The first was conducted at the North Slope of Alaska (NSA) and Adjacent arctic Ocean (AAO) site near Barrow, Alaska, during March 1999. One goal was to evaluate the ability of an
Revised: December, 2008 Revised: December, 2008 Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other All Buildings ............................. 91.0 33.0 7.2 6.1 7.0 18.7 2.7 5.3 1.0 2.2 7.9 Building Floorspace (Square Feet) 1,001 to 5,000 ........................... 99.0 30.7 6.7 2.7 7.1 13.9 7.1 19.9 1.1 1.7 8.2 5,001 to 10,000 .......................... 80.0 30.1 5.5 2.6 6.1 13.6 5.2 8.2 0.8 1.4 6.6 10,001 to 25,000 ........................ 71.0 28.2 4.5 4.1 4.1 14.5 2.3 4.5 0.8 1.6 6.5 25,001 to 50,000 ........................ 79.0 29.9 6.8 5.9 6.3 14.9 1.7 3.9 0.8 1.8 7.1 50,001 to 100,000 ...................... 88.7 31.6 7.6 7.6 6.5 19.6 1.7 3.4 0.7 2.0 8.1 100,001 to 200,000 .................... 104.2 39.1 8.2 8.9 7.9 22.9 1.1 2.9 Q 3.2 8.7 200,001 to 500,000 ....................
Investigation of surface inhomogeneity and estimation of the GOES skin temperature assimilation errors of the MM5 implied by the inhomogeneity over Houston metropolitan area
This study developed a parameterization method to investigate the impacts of inhomogeneous land surfaces on mesoscale model simulations using a high-resolution 1-d PBL model. Then, the 1-d PBL model was used to investigate the inhomogeneity-caused model errors in applying the GOES satellite skin temperature assimilation technique into the MM5 over the Houston metropolitan area (HOU). In order to investigate the surface inhomogeneity impacts on the surface fluxes and PBL variables over HOU, homo- and inhomogeneous 1-d PBL model simulations were performed over HOU and compared to each other. The 1-d PBL model was constructed so that the surface inhomogeneities were able to be represented within model grid elements using a methodology similar to Avissar and Pielke (1989). The surface inhomogeneities over HOU were defined using 30-m resolution land cover data produced by Global Environment Management (GEM), Inc. The inhomogeneity parameterization method developed in the 1-d model was applied to a standard MM5 simulation to test the applicability of the parameterization to 3-d mesoscale model simulations. From the 1-d simulations it was inferred that the surface inhomogeneities would enhance the sensible heat flux by about 36 % and reduce the latent heat flux by about 25 %, thereby inducing the warmer (0.7 %) and drier (-1.0 %) PBL and the colder and moister PBL top induced by greater turbulent diffusivities. The 3-d application of the inhomogeneity parameterization indicated consistent results with the 1-d in general, with additional effects of advection and differential local circulation. The original GOES simulation was warmer compared to observations over HOU than over surrounding areas. The satellite data assimilation itself would lead to a warm bias due to erroneous estimation of gridpoint-mean skin temperature by the satellite, but 1-d simulations indicate that the impact of this error should be much weaker than what was observed. It seems that, unless the already existing warm and dry bias of the MM5 is corrected, the inhomogeneity parameterization in the MM5 would adversely affect the MM5 performance. Therefore, consideration of the surface inhomogeneities in the urban area needs to be confined to the GOES skin temperature retrieval errors at the moment.
Upper Estimates for Banach Spaces
We study the relationship of dominance for sequences and trees in Banach spaces. In the context of sequences, we prove that domination of weakly null sequences is a uniform property. More precisely, if $(v_i)$ is a normalized basic sequence and $X$ is a Banach space such that every normalized weakly null sequence in $X$ has a subsequence that is dominated by $(v_i)$, then there exists a uniform constant $C\\geq1$ such that every normalized weakly null sequence in $X$ has a subsequence that is $C$-dominated by $(v_i)$. We prove as well that if $V=(v_i)_{i=1}^\\infty$ satisfies some general conditions, then a Banach space $X$ with separable dual has subsequential $V$ upper tree estimates if and only if it embeds into a Banach space with a shrinking FDD which satisfies subsequential $V$ upper block estimates. We apply this theorem to Tsirelson spaces to prove that for all countable ordinals $\\alpha$ there exists a Banach space $X$ with Szlenk index at most $\\omega^{\\alpha \\omega +1}$ which is universal for all Banach spaces with Szlenk index at most $\\omega^{\\alpha\\omega}$.
Freeman, Daniel B.
Integral Transforms Connecting the Hardy space with Barut-Girardello Spaces
We construct a one parameter family of integral transforms connecting the classical Hardy space with a class of weighted Bergman spaces called Barut-Girardello spaces.
Zouhair Mouayn
Nuclear modules for space electric propulsion
Analysis of interplanetary cargo and piloted missions requires calculations of the performances and masses of subsystems to be integrated in a final design. In a preliminary and scoping stage the designer needs to evaluate options iteratively by using fast computer simulations. The Oak Ridge National Laboratory (ORNL) has been involved in the development of models and calculational procedures for the analysis (neutronic and thermal hydraulic) of power sources for nuclear electric propulsion. The nuclear modules will be integrated into the whole simulation of the nuclear electric propulsion system. The vehicles use either a Brayton direct-conversion cycle, using the heated helium from a NERVA-type reactor, or a potassium Rankine cycle, with the working fluid heated on the secondary side of a heat exchanger and lithium on the primary side coming from a fast reactor. Given a set of input conditions, the codes calculate composition. dimensions, volumes, and masses of the core, reflector, control system, pressure vessel, neutron and gamma shields, as well as the thermal hydraulic conditions of the coolant, clad and fuel. Input conditions are power, core life, pressure and temperature of the coolant at the inlet of the core, either the temperature of the coolant at the outlet of the core or the coolant mass flow and the fluences and integrated doses at the cargo area. Using state-of-the-art neutron cross sections and transport codes, a database was created for the neutronic performance of both reactor designs. The free parameters of the models are the moderator/fuel mass ratio for the NERVA reactor and the enrichment and the pitch of the lattice for the fast reactor. Reactivity and energy balance equations are simultaneously solved to find the reactor design. Thermalhydraulic conditions are calculated by solving the one-dimensional versions of the equations of conservation of mass, energy, and momentum with compressible flow. 10 refs., 1 tab.
Difilippo, F.C.
Cone structure of $L^2$-Wasserstein spaces
In this paper, we prove that if a base space has a cone structure, then so does its $L^2$-Wasserstein space. Furthermore, we investigate relations between the base spaces of the both cones. Conversely, we show when an $L^2$-Wasserstein space has a cone structure satisfying certain conditions, then its underlying space is also a cone.
Takatsu, Asuka
On Algebraic Multi-Ring Spaces
A Smarandache multi-space is a union of $n$ spaces $A_1,A_2,..., A_n$ with some additional conditions holding. Combining Smarandache multi-spaces with rings in classical ring theory, the conception of multi-ring spaces is introduced. Some characteristics of a multi-ring space are obtained in this paper.
BNL NASA Space Radiation Laboratory
Purpose: To use beams of heavy ions provided by the Booster accelerator at Brookhaven to study the effects of simulated space radiation on biological and physical systems, with the goal of developing methods and materials to reduce the risk to human beings on prolonged space missions of the effects of ionizing radiation Sponsor: National Aeronautics and Space Administration (NASA) Project cost $34 million over 4 years Operating costs Nearly $8 million per year in 2007 Features * beams of heavy ions extracted from the Booster accelerator with masses and energies similar to the cosmic rays encountered in space: * 1-billion electron volt (GeV)/nucleon iron-56 * 0.3-GeV/nucleon gold-97 * 0.6-GeV/nucleon silicon-28 * 1-GeV/nucleon protons * 1-GeV/nucleon titanium
Environmental Design Space model assessment
The Environmental Design Space (EDS) is a multi-disciplinary design tool used to explore trade-offs among aircraft fuel burn, emissions, and noise. This thesis uses multiple metrics to assess an EDS model of a Boeing 777 ...
Spindler, Phillip Michael
TCP extensions for space communications
The space communication environment and mobile and wireless communication environments show many similarities when observed from the perspective of a transport protocol. Both types of environments exhibit loss caused by data corruption and link outage, ...
Robert C. Durst; Gregory J. Miller; Eric J. Travis
OOMMF/mmDisp Distributions
... Notes: All builds are against Tcl/Tk 7.6/4.2. ... The binary distributions are problematic because they require an appropriate Tcl/Tk library to run. ...
35 mm sales con background
... Page 8. � Marketing Dept 2005 All Rights Reserved 1988 Piper-Alpha North Sea ? July 6th 1988 ? World's worst ever off-shore oil disaster ...
Coordinate transformations in quaternion spaces
The quaternion spaces can be used to describe the property of electromagnetic field and gravitational field. In the quaternion space, some coordinate transformations can be deduced from the feature of quaternions, including Lorentz transformation and Galilean transformation etc., when the coordinate system is transformed into others. And some coordinate transformations with variable speed of light can be obtained in the electromagnetic field and gravitational field.
Zihua Weng
Spaces of Quantum Field Theories
The concept of a "space of quantum field theories" or "theory space" was set out in the 1970's in work of Wilson, Friedan and others. This structure should play an important role in organizing and classifying QFTs, and in the study of the string landscape, allowing us to say when two theories are connected by finite variations of the couplings or by RG flows, when a sequence of QFTs converges to another QFT, and bounding the amount of information needed to uniquely specify a QFT, enabling us to estimate their number. As yet we do not have any definition of theory space which can be used to make such arguments. In this talk, we will describe various concepts and tools which should be developed for this purpose, inspired by the analogous mathematical problem of studying the space of Riemannian manifolds. We state two general conjectures about the space of two-dimensional conformal field theories, and we define a distance function on this space, which gives a distance between any pair of theories, whether or not they are connected by varying moduli. Based on talks given at QTS6 (University of Kentucky), Erice, Texas A& M, and Northwestern University. To appear in the proceedings of QTS6.
Michael R. Douglas
Dynamical 3-Space: Emergent Gravity
The laws of gravitation devised by Newton, and by Hilbert and Einstein, have failed many experimental and observational tests, namely the bore hole g anomaly, flat rotation curves for spiral galaxies, supermassive black hole mass spectrum, uniformly expanding universe, cosmic filaments, laboratory G measurements, galactic EM bending, precocious galaxy formation,.. The response has been the introduction of the new epicycles: ``dark matter", ``dark energy", and others. To understand gravity we must restart with the experimental discoveries by Galileo, and following a heuristic argument we are led to a uniquely determined theory of a dynamical 3-space. That 3-space exists has been missed from the beginning of physics, although it was 1st directly detected by Michelson and Morley in 1887. Uniquely generalising the quantum theory to include this dynamical 3-space we deduce the response of quantum matter and show that it results in a new account of gravity, and explains the above anomalies and others. The dynamical theory for this 3-space involves G, which determines the dissipation rate of space by matter, and alpha, which experiments and observation reveal to be the fine structure constant. For the 1st time we have a comprehensive account of space and matter and their interaction - gravity.
Reginald T Cahill
Deep Space Mission Radiation Shielding Optimization
Providing protection against the hazards of space radiation is a major challenge to the exploration and development of space. The great cost of added radiation shielding is a potential limiting factor in deep space missions. In the present report, we ...
Tripathi R. K.; Wilson J. W.; Cucinotta F. A.; Nealy J. E.; Clowdsley M. S.; Kim M-H. Y.
Friction Factor Measurements in an Equally Spaced Triangular Tube Array
Friction factor data for adiabatic cross-flow of water in a staggered tube array was obtained over a Reynolds number range (based on hydraulic diameter and gap velocity) of about 10,000 to 250,000. The tubes were 12.7mm (0.5 inch) outer diameter, in a uniformly spaced triangular arrangement with a pitch-to-diameter ratio of 1.5. The friction factor was compared to several literature correlations, and was found to be best matched by the Idelchik correlation. Other correlations were found to vary significantly from the test data. Based on the test data, a new correlation is proposed for this tube bundle geometry which covers the entire Reynolds number range tested.
Vassallo P, Symolon P
Sustainable Spaces Inc | Open Energy Information
Spaces Inc Jump to: navigation, search Name Sustainable Spaces Inc. Place San Francisco, California Zip 94103 Sector Carbon Product California-based provider of energy audits and...
Total Space Heating Water Heating Cook-
Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings* ... 222 194 17...
Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings ... 2,100...
Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings* ... 1,928 1,316...
Passive Solar Space Heat | Open Energy Information
Solar Space Heat Jump to: navigation, search TODO: Add description List of Passive Solar Space Heat Incentives Retrieved from "http:en.openei.orgwindex.php?titlePassive...
Solar Space Heat | Open Energy Information
icon Solar Space Heat Jump to: navigation, search TODO: Add description List of Solar Space Heat Incentives Retrieved from "http:en.openei.orgwindex.php?titleSolarS...
Energy Consumption Survey: Energy End-Use Consumption Tables Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All...
Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings* ... 1,870 1,276...
Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings* ... 1,602 1,397...
Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings ... 2,037...
Building Technologies Office: Simplified Space Conditioning Systems...
Simplified Space Conditioning Systems for Energy Efficient Homes Expert Meeting to someone by E-mail Share Building Technologies Office: Simplified Space Conditioning Systems for...
Simplified Space Conditioning Systems for Energy Efficient Homes Expert Meeting Building America hosted the "Simplified Space Conditioning Systems for Energy Efficient Homes"...
Integration of space weather into space situational awareness
Rapid assessment of space weather effects on satellites is a critical step in anomaly resolution and satellite threat assessment. That step, however, is often hindered by a number of factors including timely collection and delivery of space weather data and the inherent com plexity of space weather information. As part of a larger, integrated space situational awareness program, Los Alamos National Laboratory has developed prototype operational space weather tools that run in real time and present operators with customized, user-specific information. The Dynamic Radiation Environment Assimilation Model (DREAM) focuses on the penetrating radiation environment from natural or nuclear-produced radiation belts. The penetrating radiation environment is highly dynamic and highly orbit-dependent. Operators often must rely only on line plots of 2 MeV electron flux from the NOAA geosynchronous GOES satellites which is then assumed to be representative of the environment at the satellite of interest. DREAM uses data assimilation to produce a global, real-time, energy dependent specification. User tools are built around a distributed service oriented architecture (SOA) which will allow operators to select any satellite from the space catalog and examine the environment for that specific satellite and time of interest. Depending on the application operators may need to examine instantaneous dose rates and/or dose accumulated over various lengths of time. Further, different energy thresholds can be selected depending on the shielding on the satellite or instrument of interest. In order to rapidly assess the probability that space weather was the cause of anomalous operations, the current conditions can be compared against the historical distribution of radiation levels for that orbit. In the simplest operation a user would select a satellite and time of interest and immediately see if the environmental conditions were typical, elevated, or extreme based on how often those conditions occur in that orbit. This allows users to rapidly rule in or out environmental causes of anomalies. The same user interface can also allow users to drill down for more detailed quantitative information. DREAM can be run either from a distributed web-based user interface or as a stand-alone application for secure operations. In this paper we discuss the underlying structure of the DREAM model and demonstrate the user interface that we have developed . We also present some prototype data products and user interfaces for DREAM and discuss how space environment information can be seamlessly integrated into operational SSA systems.
Reeves, Geoffrey D [Los Alamos National Laboratory
Performance Analysis of Potassium Heat Pipes Radiator for HP-STMCs Space Reactor Power System
A detailed design and performance results of C-C finned, and armored potassium heat pipes radiator for a 110 kWe Heat Pipes-Segmented Thermoelectric Module Converters (HP-STMCs) Space Reactor Power system (SRPS) are presented. The radiator consists of two sections; each serves an equal number of STMCs and has 162 longitudinal potassium heat pipes with 0.508 mm thick C-C fins. The width of the C-C fins at the minor diameter of the radiator is almost zero, but increases with distance along the radiator to reach 3.7 cm at the radiator's major diameter. The radiator's heat pipes (OD = 2.42 cm in front and 3.03 cm in rear) have thin titanium (0.0762 mm thick) liners and wicks (0.20 mm thick with an effective pore radius of 12-16 {mu}m) and a 1.016 mm thick C-C wall. The wick is separated from the titanium liner by a 0.4 mm annulus filled with liquid potassium to increase the capillary limit. The outer surfaces of the heat pipes in the front and rear sections of the radiator are protected with a C-C armor that is 2.17 mm and 1.70 mm thick, respectively. The inside surface of the heat pipes in the front radiator is thermally insulated while the C-C finned condensers of the rear heat pipes are exposed, radiating into space through the rear opening of the radiator cavity. The heat pipes in both the front and the rear radiators have a 1.5 m long evaporator section and each dissipates 4.47 kW while operating at 43.6% of the prevailing sonic limit. The front and rear radiator sections are 5.29 m and 2.61 m long with outer surface area and mass of 47.1 m2 and 314.3 kg, and 39.9 m2 and 243.2 kg, respectively. The total radiator is 7.63 m long and has minor and major diameters of 1.48 m and 5.57 m, respectively, and a total surface area of 87 m2; however, the effective radiator area, after accounting for heat rejection through the rear of the radiator cavity, is 98.8 m2. The radiator's total mass including the C-C armor is 557.5 kg and the specific area and specific mass are 6.41 kg/m2 and 5.07 kg/kWe, respectively.
El-Genk, Mohamed S.; Tournier, Jean-Michel [Institute for Space and Nuclear Power Studies, University of New Mexico, Albuquerque, NM, 87131 (United States); Chemical and Nuclear Engineering Dept., University of New Mexico, Albuquerque, NM, 87131 (United States)
Effects of Pin Detached Space on Heat Transfer and Pin-Fin Arrays
Heat transfer and pressure characteristics in a rectangular channel with pin-fin arrays of partial detachment from one of the endwalls have been experimentally studied. The overall channel geometry (W?=?76.2 mm, E?=?25.4 mm) simulates an internal cooling passage of wide aspect ratio (3:1) in a gas turbine airfoil. With a given pin diameter, D?=?6.35 mm?=?�E, three different pin-fin height-to-diameter ratios, H/D?=?4, 3, and 2, were examined. Each of these three cases corresponds to a specific pin array geometry of detachment spacing (C) between the pin tip and one of the endwalls, i.e., C/D?=?0, 1, 2, respectively. The Reynolds number, based on the hydraulic diameter of the unobstructed cross-section and the mean bulk velocity, ranges from 10,000 to 25,000. The experiment employs a hybrid technique based on transient liquid crystal imaging to obtain the distributions of the local heat transfer coefficient over all of the participating surfaces, including the endwalls and all the pin elements. Experimental results reveal that the presence of a detached space between the pin tip and the endwall has a significant effect on the convective heat transfer and pressure loss in the channel. The presence of pin-to-endwall spacing promotes wall-flow interaction, generates additional separated shear layers, and augments turbulent transport. In general, an increase in detached spacing, or C/D, leads to lower heat transfer enhancement and pressure drop. However, C/D?=?1, i.e., H/D?=?3, of a staggered array configuration exhibits the highest heat transfer enhancement, followed by the cases of C/D?=?0 and C/D?=?2, i.e., H/D?=?4 or 2, respectively.
Siw, Sin C.; Chyu, Minking K.; Shih, Tom I-P.; Alvin, Mary Anne
Dielectric Analog Space-Times
We generalize the notion of a dielectric analog Schwarzschild black hole model to analog models of arbitrary space-times; in particular, the approach is not restricted to static space-times. This is done by establishing a correspondence between electrodynamics on a curved, vacuum manifold, with electrodynamics in a general linear dielectric residing in Minkowski space-time. The mapping is not unique, allowing for some freedom in the specification of equivalent materials, which could be useful for exploiting recent developments in the production of metamaterials. Some examples are considered, with special attention paid to the dielectric analog of the exterior Kerr geometry, which is found to be reproducible with regular, linear, dielectrics.
Robert T. Thompson; J�rg Frauendiener
Quantum dynamics in dual spaces
Quantum mechanics gives us information about spectra of dynamical variables and transition rates including scattering cross sections. They can be exhibited as spectral information in analytically continued spaces and their duals. Quantum mechanics formulated in these generalized spaces is used to study scattering and time evolution. It is shown that the usual asymptotic condition is inadequate to deal with scattering of composite or unstable particles. Scattering theory needs amendment when the interacting system is not isospectral with the free Hamiltonian, and the amendment is formulated. Perturbation theory in generalized spaces is developed and used to study the deletion and augmentation of the spectrum of the Hamiltonian. A complete set of algebraically independent constants for an interacting system is obtained. The question of the breaking of time symmetry is discussed.
Sudarshan, E.C.G.
National Aeronautics and Space Administration SpaceMathVI
data. The problems were designed to be `one-pagers' with a Teacher's Guide and Answer Key as a second;Answer Key Problem 1 - How many atoms of hydrogen (H), carbon (C) and oxygen (O) are contained the planets be after 6 years? Space Math http://spacemath.gsfc.nasa.gov #12;2Answer Key Problem 1 - Students
Exponential Smoothing and State-Space Modeling
Exponential Smoothing and State-Space Modeling. Purpose: Exponential smoothing methods for forecasting are sometimes ...
Free loop spaces in topology and
Free loop spaces in topology and physics Kathryn Hess What is the space of free loops? Enumeration of geodesics Hochschild and cyclic homology Homological conformal field theories Free loop spaces in topology Meeting of the Edinburgh Mathematical Society Glasgow, 14 November 2008 #12;Free loop spaces in topology
Thévenaz, Jacques
Some moduli spaces of Bridgeland's stability conditions
We shall study some moduli spaces of Bridgeland's semi-stable objects on abelian surfaces and K3 surfaces with Picard number 1. Under some conditions, we show that the moduli spaces are isomorphic to the moduli spaces of Gieseker semi-stable sheaves. We also study the ample cone of the moduli spaces.
Minamide, Hiroki; Yoshioka, Kota
QM/MM Lineshape Simulation of the Hydrogen-bonded Uracil NH Stretching Vibration of the Adenine:Uracil Base Pair in CDCl$_3$
A hybrid Car-Parrinello QM/MM molecular dynamics simulation has been carried out for the Watson-Crick base pair of 9-ethyl-8-phenyladenine and 1-cyclohexyluracil in deuterochloroform solution at room temperature. The resulting trajectory is analyzed putting emphasis on the N-H$...$N Hydrogen bond geometry. Using an empirical correlation between the $\\NN$-distance and the fundamental NH-stretching frequency, the time-dependence of this energy gap along the trajectory is obtained. From the gap-correlation function we determine the infrared absorption spectrum using lineshape theory in combination with a multimode oscillator model. The obtained average transition frequency and the width of the spectrum is in reasonable agreement with recent experimental data.
Yan, Yun-an; K�hn, Oliver
Evaluating the influence of antecedent soil moisture on variability of the North American Monsoon precipitation in the coupled MM5/VIC modeling system
The influence of antecedent soil moisture on North American monsoon system (NAMS) precipitation variability was explored using the MM5 mesoscale model coupled with the Variable Infiltration Capacity (VIC) land surface model. Sensitivity experiments were performed with extreme wet and dry initial soil moisture conditions for both the 1984 wet monsoon year and the 1989 dry year. The MM5-VIC model reproduced the key features of NAMS in 1984 and 1989 especially over northwestern Mexico. Our modeling results indicate that the land surface has memory of the initial soil wetness prescribed at the onset of the monsoon that persists over most of the region well into the monsoon season (e.g. until August). However, in contrast to the classical thermal contrast concept, where wetter soils lead to cooler surface temperatures, less land-sea thermal contrast, weaker monsoon circulations and less precipitation, the coupled model consistently demonstrated a positive soil moisture � precipitation feedback. Specifically, anomalously wet premonsoon soil moisture always lead to enhanced monsoon precipitation, and the reverse was also true. The surface temperature changes induced by differences in surface energy flux partitioning associated with pre-monsoon soil moisture anomalies changed the surface pressure and consequently the flow field in the coupled model, which in turn changed moisture convergence and, accordingly, precipitation patterns. Both the largescale circulation change and local land-atmospheric interactions in response to premonsoon soil moisture anomalies play important roles in the coupled model�s positive soil moisture monsoon precipitation feedback. However, the former may be sensitive to the strength and location of the thermal anomalies, thus leaving open the possibility of both positive and negative soil moisture precipitation feedbacks.
Zhu, Chunmei; Leung, Lai R.; Gochis, David; Qian, Yun; Lettenmaier, Dennis P.
Some necessary conditions for vector space partitions
Some new necessary conditions for the existence of vector space partitions are derived. They are applied to the problem of finding the maximum number of spaces of dimension t in a vector space partition of V(2t,q) that contains m_d spaces of dimension d, where t/2spaces of other dimensions. It is also discussed how this problem is related to maximal partial (t-1)-spreads in V(2t,q). We also give a lower bound for the number of spaces in a vector space partition and verify that this bound is tight.
Heden, Olof
Debris and Future Space Activities
Debris and Future Space Activities Prof. Joel R. Primack Physics Department University eleven year cycle, it heats the upper atmosphere and makes it expand so that debris and spacecraft in low which overflows occasionally and washes only the lowest hillsides clear of debris. Debris in orbit
National Aeronautics and Space Administration
and Contracting Processes. Developing adequate cost estimates, managing program costs, and ensuring that NASA, simultaneously, developing the next generation of space vehicles. · Managing Risk to People, Equipment to address continued problems such as NASA's internal controls over property, plant, and equipment
Christian, Eric
of turbulent flow with phase transitions and radiation · Extreme weather and climate change -> is essentially and carbon with the ocean/ land/ice surface are mediated by turbulence #12;National Aeronautics and Space-Diffusivity (ED) approach In ED closure the sub-grid flux is parameterized as where k is the diffusivity
Bordoni, Simona
Fusion for Earth and Space
The compact reactor concept (Williams, 2007) has the potential to provide clean, safe and unlimited supply of energy for Earth and Space applications. The concept is a potential fusion reactor wherein deuterium nuclei are preferentially fused into helium nuclei. Because the deuterium nuclei are preferentially fused into helium nuclei at temperatures and energies lower than specified by the standard model there is no harmful radiation as a byproduct of this fusion process. Therefore, a reactor using this reaction does not need any shielding to contain such radiation. The energy released from each reaction and the absence of shielding makes the deuterium-plus-deuterium-to-helium (DDH) reactor very compact when compared to other reactors, both fission and fusion types. Moreover, the potential energy output per reactor weight and the absence of harmful radiation makes the DDH reactor an ideal candidate for individual home and space power. The concept also would make it possible for each plant or remote location to have it's own power source, on site, without the need for a connection to the power grid. This would minimize, or eliminate, power blackouts. The concept could replace large fission reactors and fossil fuel power plants plus provide energy for ships, locomotives, trucks and autos. It would make an ideal source of energy for space power applications and for space propulsion.
Williams, Pharis E
On Algebraic Multi-Group Spaces
A Smarandache multi-space is a union of $n$ spaces $A_1,A_2,..., A_n$ with some additional conditions holding. Combining classical of a group with Smarandache multi-spaces, the conception of a multi-group space is introduced in this paper, which is a generalization of the classical algebraic structures, such as the group, filed, body, $...$, etc.. Similar to groups, some characteristics of a multi-group space are obtained in this paper.
Better Real-Time Monitoring of Cargo
The Town Crier Method The Town Crier Method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
Cryogenic explosion environment modeling and testing of space shuttle and light-weight radioisotope heater unit interactions
In order to assess the risk to the world's populace in the event of a Space Shuttle accident when radioisotope-containing heat sources are on board, testing of that system must be performed to determine release point, environments required, and the size distribution of the released fuel. To evaluate the performance of the Light-Weight Radioisotope Heater Unit (LWRHU) (101 of these 1-W items are placed on the Galileo spacecraft which will be launched from the Space Shuttle), some high-velocity impact and flyer plate testing was carried out. The results showed that a bare urania-fueled LWRHU clad (approximately 1-mm thick platinum-30 wt % rhodium alloy) will withstand 1100 m/s flyer plate (3.5-mm thick aluminum) impacts and 330 m/s impacts upon the Space Shuttle floor (approximately 12-mm thick aluminum) without rupture or fuel release. Velocities in the order of 600 m/s on a steel surface will cause clad failure with fuel release. The fuel breakup patterns were characterized as to quantity in a specific size range. These data were employed in the formal Safety Analysis Report for the LWRHU to support the planned 1986 Galileo launch. 19 figs.
Johnson, E.W.
Any opinions, findings, and conclusions or recommendations expressed in this volume are those of the author(s) and do not necessarily reflect the views of the National Aeronautics and Space Administration. Material in this volume may be copied without restraint for library, abstract service, education, or personal research purposes; however, republication of any paper or portion thereof requires the written permission of the authors as well as the appropriate acknowledgment of this publication. Abstracts in this volume may be cited as
Curt Niebur; Nasa Headquarters; Terry Hurford; Nasa Goddard; Curt Niebur; Nasa Headquarters
Discrete space-time symmetries
Symmetries have always fascinated human beings; they are found in nature, art, and architecture. Physicists, like other scientists have often used symmetries as a basis of their understanding of nature. When the dynamics is unknown, symmetries serve to delineate and define it. When the dynamics is known, symmetries are used to study structure. These two lectures review the theory and present understanding and status of two discrete space-time symmetries,, namely parity (P) and time reversal (T).
Henley, E.M.
Embeddings and factorizations of Banach spaces
One problem, considered important in Banach space theory since at least the 1970�s, asks for intrinsic characterizations of subspaces of a Banach space with an unconditional basis. A more general question is to give necessary and sufficient conditions for operators from Lp (2 space, being a subspace of a reflexive space with an unconditional basis or being a quotient of such a space, is equivalent to having the unconditional tree property. I also show that a bounded linear operator from Lp (2 spaces.
Zheng, Bentuo
TCP Extensions for Space Communications
The space communication environment and mobile and wireless communication environments show many similarities when observed from the perspective of a transport protocol. Both types of environments exhibit loss caused by data corruption and link outage, in addition to congestion-related loss. The constraints imposed by the two environments are also similar --- power, weight, and physical volume of equipment are scarce resources. Finally, it is not uncommon for communication channel data rates to be severely limited and highly asymmetric. We are working on solutions to these types of problems for space communication environments, and we believe that these solutions may be applicable to the mobile and wireless community. As part of our work, we have defined and implemented the Space Communications Protocol Standards-Transport Protocol (SCPSTP) , a set of extensions to TCP that address the problems that we have identified. The results of our performance tests, both in the laboratory and on actual satellites, indicate that the SCPS-TP extensions yield significant improvements in throughput over unmodified TCP on error-prone links. Additionally, the SCPS modifications significantly improve performance over links with highly asymmetric data rates.
The Ability of MM5 to Simulate Ice Clouds: Systematic Comparison between Simulated and Measured Fluxes and Lidar/Radar Profiles at SIRTA Atmospheric Observatory
Ice clouds play a major role in the radiative energy budget of the Earth-atmosphere system (Liou 1986). Their radiative effect is governed primarily by the equilibrium between their albedo and greenhouse effects. Both macrophysical and microphysical properties of ice clouds regulate this equilibrium. For quantifying the effect of these clouds onto climate and weather systems, they must be properly characterized in atmospheric models. In this paper we use remote-sensing measurements from the SIRTA ground based atmospheric observatory (Site Instrumental de Recherche par Teledetection Atmospherique, http://sirta.lmd.polytechnique.fr). Lidar and radar observations taken over 18 months are used, in order to gain statistical confidence in the model evaluation. Along this period of time, 62 days are selected for study because they contain parts of ice clouds. We use the ''model to observations'' approach by simulating lidar and radar signals from MM5 outputs. Other more classical variables such as shortwave and longwave radiative fluxes are also used. Four microphysical schemes, among which that proposed by Reisner et al. (1998) with original or modified parameterizations of particle terminal fall velocities (Zurovac-Jevtic and Zhang 2003, Heymsfield and Donner 1990), and the simplified Dudhia (1989) scheme are evaluated in this study.
Chiriaco, M.; Vautard, R.; Chepfer, H.; Haeffelin, M.; Wanherdrick, Y.; Morille, Y.; Protat, A.; Dudhia, J.
Precipitation from Space: Advancing Earth System Science
Advances to space-based observing systems and data processing techniques have made precipitation datasets quickly and easily available via various data portals and widely used in Earth sciences. The increasingly lengthy time span of space-based ...
Paul A. Kucera; Elizabeth E. Ebert; F. Joseph Turk; Vincenzo Levizzani; Dalia Kirschbaum; Francisco J. Tapiador; Alexander Loew; M. Borsche
Cyber-Physical Challenges for Space Systems
Modern space systems necessarily have a tight coupling between onboard cyber (processing, communication) and physical (sensing, actuation) elements to survive the harsh extraterrestrial environment and successfully complete ambitious missions. This article ... Keywords: attitude control, communication, robotics, space systems
Andrew T. Klesh; James W. Cutler; Ella M. Atkins
Defining digital space through a visual language
Current approaches toward digital spaces mainly mimic the physical space that surrounds us. While this approach is valid in a wide range of applications and research, the goal of this thesis is to propose an alternative ...
Kilian, Axel, 1971-
A WRINKLE IN SPACE Christopher Adam Cross
committee. ii #12;Abstract Christopher Adam Cross We explore notions of curvature of regular surfaces be made between distant points in space and time by curving space until the two points touch. I would
Solar space heating | Open Energy Information
heating heating Jump to: navigation, search (The following text is derived from the United States Department of Energy's description of solar space heating technology.)[1] Contents 1 Space Heating 2 Passive Solar Space Heating 3 Active Solar Space Heating 4 References Space Heating A solar space-heating system can consist of a passive system, an active system, or a combination of both. Passive systems are typically less costly and less complex than active systems. However, when retrofitting a building, active systems might be the only option for obtaining solar energy. Passive Solar Space Heating Passive solar space heating takes advantage of warmth from the sun through design features, such as large south-facing windows, and materials in the floors or walls that absorb warmth during the day and release that warmth
Small Space Heater Basics | Department of Energy
Small Space Heater Basics Small Space Heater Basics Small Space Heater Basics August 19, 2013 - 10:38am Addthis Small space heaters, also called portable heaters, are typically used when the main heating system is inadequate or when central heating is too costly to install or operate. Space heater capacities generally range between 10,000 Btu to 40,000 Btu per hour. Common fuels used for this purpose are electricity, propane, natural gas, and kerosene. Although most space heaters rely on convection (the circulation of air in a room), some rely on radiant heating; that is, they emit infrared radiation that directly heats up objects and people that are within their line of sight. Combustion Space Heaters Space heaters are classified as vented and unvented, or "vent free." Unvented combustion units are not recommended for inside use, as they
Color spaces in digital video
Whether it`s photography, computer graphics, publishing, or video; each medium has a defined color space, or gamut, which defines the extent that a given set of RGB colors can be mixed. When converting from one medium to another, an image must go through some form of conversion which maps colors into the destination color space. The conversion process isn`t always straight forward, easy, or reversible. In video, two common analog composite color spaces are Y`tjv (used in PAL) and Y`IQ (used in NTSC). These two color spaces have been around since the beginning of color television, and are primarily used in video transmission. Another analog scheme used in broadcast studios is Y`, R`-Y`, B`-Y` (used in Betacam and Mll) which is a component format. Y`, R`-Y`,B`-Y` maintains the color information of RGB but in less space. From this, the digital component video specification, ITU-Rec. 601-4 (formerly CCIR Rec. 601) was based. The color space for Rec. 601 is symbolized as Y`CbCr. Digital video formats such as DV, Dl, Digital-S, etc., use Rec. 601 to define their color gamut. Digital composite video (for D2 tape) is digitized analog Y`UV and is seeing decreased use. Because so much information is contained in video, segments of any significant length usually require some form of data compression. All of the above mentioned analog video formats are a means of reducing the bandwidth of RGB video. Video bulk storage devices, such as digital disk recorders, usually store frames in Y`CbCr format, even if no other compression method is used. Computer graphics and computer animations originate in RGB format because RGB must be used to calculate lighting and shadows. But storage of long animations in RGB format is usually cost prohibitive and a 30 frame-per-second data rate of uncompressed RGB is beyond most computers. By taking advantage of certain aspects of the human visual system, true color 24-bit RGB video images can be compressed with minimal loss of visual information. For example, humans `see` more white-to-black (luminance) detail then red, green, or blue color detail. Also, the eye is most sensitive to green colors. Taking advantage of this, both composite and component video allocates more bandwidth for the luma (Y`) signal than the chroma signals. Y`611 is composed of 59% green`, 30% red`, and 11% blue` (prime symbol denotes gamma corrected colors). This luma signal also maintains compatibility with black and white television receivers. Component digital video converts R`G`B` signals (either from a camera or a computer) to a monochromatic brightness signal Y` (referred here as luma to distinguish it from the CIE luminance linear- light quantity), and two color difference signals Cb and Cr. These last two are the blue and red signals with the luma component subtracted out. As you know, computer graphic images are composed of red, green, and blue elements defined in a linear color space. Color monitors do not display RGB linearly. A linear RGB color space image must be gamma corrected to be displayed properly on a CRT. Gamma correction, which is approximately a 0.45 power function, must also be employed before converting an RGB image to video color space. Gamma correction is defined for video in the international standard: ITU-Rec. BT.709-4. The gamma correction transform is the same for red, green, and blue. The color coding standard for component digital video and high definition video symbolizes gamma corrected luma by Y`, the blue difference signal by Cb (Cb = B` -Y`), and the red color difference signal by Cr (Cr = R` - Y`). Component analog HDTV uses Y`PbPr. To reduce conversion errors, clip in R`G`B`, not in Y`CbCr space. View video on a video monitor, computer monitor phosphors are wrong. Use a large word size (double precision) to avoid warp around, the0232n round the results to values between 0 and 255. And finally, recall that multiplying two 8- bit numbers results in a 16-bit number, so values need to be clipped to 8-bits.
Gaunt, R.
National Aeronautics and Space Administration Technologies ...
National Aeronautics and Space Administration Technologies Available for Licensing ... solar system and universe beyond; ... power, energy storage and conversion, ...
Mapping densities in a noisy state space
Weak noise smooths out fractals in a chaotic state space and introduces a maximum attainable resolution to its structure. The balance of noise and deterministic stretching/contraction in each neighborhood introduces local invariants of the dynamics that can be used to partition the state space. We study the local discrete-time evolution of a density in a two-dimensional hyperbolic state space, and use the asymptotic eigenfunctions for the noisy dynamics to formulate a new state space partition algorithm.
Domenico Lippolis
Atomic Power in Space: A History
DOE R&D Accomplishments (OSTI)
"Atomic Power in Space," a history of the Space Isotope Power Program of the United States, covers the period from the program's inception in the mid-1950s through 1982. Written in non-technical language, the history is addressed to both the general public and those more specialized in nuclear and space technologies. Interplanetary space exploration successes and achievements have been made possible by this technology, for which there is no known substitue.
All Universal Coverings Are Spanier Spaces
In this paper, we study necessary and sufficient conditions for existence of categorical universal coverings using open covers of a given space $X$. In fact, we define several homotopy theoretic conditions which we then prove are equivalent to the existence of a categorical universal covering space. As an application, we show that all universal coverings of a connected and locally path connected space are Spanier spaces.
Pakdaman, Ali; Mashayekhy, Behrooz
Space-Conditioning System Selection Guide
This handbook represents a single-source guide to the selection of space-conditioning equipment for commercial facilities. Written for the utility marketing representative, it provides information on these topics: heating, cooling, ventilation, and dehumidification requirements of commercial buildings; customer needs when selecting a space-conditioning system; and, the options among energy-efficient electric space-conditioning systems for commercial buildings.
State-space least mean square
In this paper, we present a generalized form of the well-known least mean square (LMS) filter. The proposed filter incorporates linear time-varying state-space model of the underlying environment and hence is termed as state-space LMS (SSLMS). This attribute ... Keywords: Adaptive filtering, SSLMS, State-space LMS, Tracking
Mohammad Bilal Malik; Muhammad Salman
Atomic power in space: A history
''Atomic Power in Space,'' a history of the Space Isotope Power Program of the United States, covers the period from the program's inception in the mid-1950s through 1982. Written in non-technical language, the history is addressed to both the general public and those more specialized in nuclear and space technologies. 19 figs., 3 tabs.
COTS-based applications in space avionics
The use of commercial electronic components is increasingly attractive for the space domain. This paper discusses the current degree of use of these components in space avionics, the selection and qualification phases to be successfully completed before ... Keywords: COTS, commercial electronic components, disruptive technology, fault-tolerant architectures, performance limitation, space avionics
Michel Pignol
Efficient optimal design space characterization methodologies
One of the primary advantages of a high-level synthesis system is its ability to explore the design space. This paper presents several methodologies for design space exploration that compute all optimal tradeoff points for the combined ... Keywords: bounding, clock-length determination, design space exploration, efficient searching, high-level synthesis, module selection, scheduling
Stephen A. Blythe; Robert A. Walker
On the design of potential collaboration spaces
In this paper, we introduce the concepts of Potential and Actual Collaboration Spaces. The former applies to the initial space where opportunities for collaboration are identified and an initial interaction is established, while the latter relates to ... Keywords: Doc2U, casual and informal interactions, potential collaboration awareness, potential collaboration spaces
Alberto L. Moran; Jesus Favela; Ana M. Martinez Enriquez; Dominique Decouchant
Exploring indoor white spaces in metropolises
It is a promising vision to utilize white spaces, i.e., vacant VHF and UHF TV channels, to satisfy skyrocketing wireless data demand in both outdoor and indoor scenarios. While most prior works have focused on exploring outdoor white spaces, the indoor ... Keywords: TV white spaces, clustering algorithms, sensor placement
Xuhang Ying, Jincheng Zhang, Lichao Yan, Guanglin Zhang, Minghua Chen, Ranveer Chandra
Earthwatch: The climate from space
This concise textbook shows how observations from satellites can be used to derive variables important to the monitoring of the climate system. The aim of this book is not to provide a rigorous treatment of climate or of remote sensing and instrumentation, but to attempt to integrate the different disciplines at a level appropriate for undergraduate students of meteorology. The general topics covered are as follows: components of the climate system, basic physical laws (radiations and radiative transfer), current climate issues (greenhouse effect, ozone depletion, Southern Oscillations), remote sensing techniques, and operational principles of sensors aboard space platforms.
Harries, J.E.
Free-space quantum cryptography
An experimental free-space quantum key distribution (QKD) system has been tested over an outdoor optical path of {approximately}1 km under nighttime conditions at Los Alamos National Laboratory. This system employs the Bennett 92 protocol; here the authors give a brief overview of this protocol, and describe the experimental implementation of it. An analysis of the system efficiency is presented, as well as a description of the error detection protocol, which employs a two-dimensional parity check scheme. Finally, the susceptibility of this system to eavesdropping by various techniques is determined. Possible applications include the rekeying of satellites in low earth orbit.
Hughes, R.J.; Buttler, W.T.; Kwiat, P.G.; Lamoreaux, S.K.; Morgan, G.L.; Nordholt, J.E.; Peterson, C.G.
Adaptation to space applications of a 2000 c furnace with oxidizing atmosphere
The possibility of using a low weight low power consumption furnace with oxidizing atmosphere at 2000 C for space applications is discussed. The main heating element is made of zirconium oxide with a platinum preheating system. The structure and stabilization of zirconium oxide are detailed together with its application to the space situation. The static and dynamic regimes are discussed with regard to measurement of the resistivity as a function of temperature and dynamic model. The temperature distribution in the furnace and in a main heating element were studied in relation to thermal insulation and weight budget. A model is proposed for optimal control and thermostat using analog simulation. The final concept requires 350 W for an isothermal furnace of 20 mm diameter weighing 3 kg. The cases of temperature gradient furnaces and of universal furnaces are reviewed. (GRA)
Better bases for kernel spaces
In this article we investigate the feasibility of constructing stable, local bases for computing with kernels. In particular, we are interested in constructing families $(b_{\\xi})_{\\xi\\in\\Xi}$ that function as bases for kernel spaces $S(k,\\Xi)$ so that each basis function is constructed using very few kernels. In other words, each function $b_{\\zeta}(x) = \\sum_{\\xi\\in\\Xi} A_{\\zeta,\\xi} k(x,\\xi)$ is a linear combination of samples of the kernel with few nonzero coefficients $A_{\\zeta,\\xi}$. This is reminiscent of the construction of the B-spline basis from the family of truncated power functions. We demonstrate that for a large class of kernels (the Sobolev kernels as well as many kernels of polyharmonic and related type) such bases exist. In fact, the basis elements can be constructed using a combination of roughly $O(\\log N)^d$ kernels, where $d$ is the local dimension of the manifold and $N$ is the dimension of the kernel space (i.e. $N=#\\Xi$). Viewing this as a preprocessing step -- the construction of the...
Fuselier, E J; Narcowich, F J; Ward, J D; Wright, G B
Quantum L_p and Orlicz spaces
Let $\\A$ ($\\cM$) be a $C^*$-algebra (a von Neumann algebra respectively). By a quantum dynamical system we shall understand the pair $({\\A}, T)$ ($({\\cM}, T)$) where $T : {\\A} \\to {\\A}$ ($T : {\\cM} \\to {\\cM}$) is a linear, positive (normal respectively), and identity preserving map. In our lecture, we discuss how the techniques of quantum Orlicz spaces may be used to study quantum dynamical systems. To this end, we firstly give a brief exposition of the theory of quantum dynamical systems in quantum $L_p$ spaces. Secondly, we describe the Banach space approach to quantization of classical Orlicz spaces. We will discuss the necessity of the generalization of $L_p$-space techniques. Some emphasis will be put on the construction of non-commutative Orlicz spaces. The question of lifting dynamical systems defined on von Neumann algebra to a dynamical system defined in terms of quantum Orlicz space will be discussed.
L. E. Labuschagne; W. A. Majewski
source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Solar space heating (Redirected from - Solar Ventilation Preheat) Jump to: navigation, search (The following text is derived from the United States Department of Energy's description of solar space heating technology.)[1] Contents 1 Space Heating 2 Passive Solar Space Heating 3 Active Solar Space Heating 4 References Space Heating A solar space-heating system can consist of a passive system, an active system, or a combination of both. Passive systems are typically less costly and less complex than active systems. However, when retrofitting a building, active systems might be the only option for obtaining solar
Before House Committee on Science, Space, and Technology | Department...
Space, and Technology Before House Committee on Science, Space, and Technology Before House Committee on Science, Space, and Technology By: Peter Lyons Subject: Assessing America's...
Before House Committee on Science, Space and Technology | Department...
Space and Technology Before House Committee on Science, Space and Technology Before House Committee on Science, Space and Technology By: Secretary Steven Chu Subject: FY 2013...
Before the House Committee on Science, Space and Technology ...
the House Committee on Science, Space and Technology Before the House Committee on Science, Space and Technology Statement Before the Committee on Science, Space and Technology,...
Clarification of the Mechanism of Acylation Reaction and Origin of Substrate Specificity of the Serine-Carboxyl Peptidase Sedolisin through QM/MM Free Energy Simulations
Quantum mechanical/molecular mechanical (QM/MM) free energy simulations are applied for understanding the mechanism of the acylation reaction catalyzed by sedolisin, a representative serine-carboxyl peptidase, leading to the acyl-enzyme (AE) and first product from the enzyme-catalyzed reaction. One of the interesting questions to be addressed in this work is the origin of the substrate specificity of sedolisin that shows a relatively high activity on the substrates with Glu at P1 site. It is shown that the bond making and breaking events of the acylation reaction involving a peptide substrate (LLE*FL) seem to be accompanied by local conformational changes, proton transfers as well as the formation of alternative hydrogen bonds. The results of the simulations indicate that the conformational change of Glu at P1 site and its formation of a low barrier hydrogen bond with Asp-170 (along with the transient proton transfer) during the acylation reaction might play a role in the relatively high specificity for the substrate with Glu at P1 site. The role of some key residues in the catalysis is confirmed through free energy simulations. Glu-80 is found to act as a general base to accept a proton from Ser-287 during the nucleophilic attack and then as a general acid to protonate the leaving group (N H of P1 -Phe) during the cleavage of the scissile peptide bond. Another acidic residue, Asp-170, acts as a general acid catalyst to protonate the carbonyl of P1-Glu during the formation of the tetrahedral intermediate and as a general base for the formation of the acyl-enzyme. The energetic results from the free energy simulations support the importance of proton transfer from Asp-170 to the carbonyl of P1-Glu in the stabilization of the tetrahedral intermediate and the formation of a low-barrier hydrogen bond between the carboxyl group of P1-Glu and Asp-170 in the lowering of the free energy barrier for the cleavage of the peptide bond. Detailed analyses of the proton transfers during acylation are also given.
Xu, Qin [ORNL; Yao, Jianzhuang [ORNL; Wiodawer, Alexander [SAIC-Frederick, Inc., National Cancer Institute at Frederick, Frederick, MD; Guo, Hong [ORNL
Data structure as topological spaces
Abstract. In this paper, we propose a topological metaphor for computations: computing consists in moving through a path in a data space and making some elementary computations along this path. This idea underlies an experimental declarative programming language called mgs. mgs introduces the notion of topological collection: a set of values organized by a neighborhood relationship. The basic computation step in mgs relies on the notion of path: a path C is substituted for a path B in a topological collection A. This step is called a transformation and several features are proposed to control the transformation applications. By changing the topological structure of the collection, the underlying computational model is changed. Thus, mgs enables a unified view on several computational mechanisms. Some of them are initially inspired by biological or chemical processes (Gamma and the CHAM, Lindenmayer systems, Paun systems and cellular automata).
Jean-louis Giavitto; Olivier Michel
Survivable pulse power space radiator
A thermal radiator system is described for use on an outer space vehicle, which must survive a long period of nonuse and then radiate large amounts of heat for a limited period of time. The radiator includes groups of radiator panels that are pivotally connected in tandem, so that they can be moved to deployed configuration wherein the panels lie largely coplanar, and to a stowed configuration wherein the panels lie in a stack to resist micrometerorite damage. The panels are mounted on a boom which separates a hot power source from a payload. While the panels are stowed, warm fluid passes through their arteries to keep them warm enough to maintain the coolant in a liquid state and avoid embrittlement of material. The panels can be stored in a largely cylindrical shell, with panels progressively further from the boom being of progressively shorter length. 5 figs.
Mims, J.; Buden, D.; Williams, K.
Space Power Systems | Department of Energy
Reactor Technologies » Space Power Systems Reactor Technologies » Space Power Systems Space Power Systems Through a strong partnership between the Energy Department's office of Nuclear Energy and NASA, Radioisotope Power Systems have been providing the energy for deep space exploration. Through a strong partnership between the Energy Department's office of Nuclear Energy and NASA, Radioisotope Power Systems have been providing the energy for deep space exploration. The Department of Energy (DOE) and its predecessors have provided radioisotope power systems that have safely enabled deep space exploration and national security missions for five decades. Radioisotope power systems (RPSs) convert the heat from the decay of the radioactive isotope plutonium-238 (Pu-238) into electricity. RPSs are capable of producing heat and electricity under the harsh conditions
A Space-Charge-Neutralizing Plasma for Beam Drift Compression
Simultaneous radial focusing and longitudinal compression of intense ion beams are being studied to heat matter to the warm dense matter, or strongly coupled plasma regime. Higher compression ratios can be achieved if the beam compression takes place in a plasma-filled drift region in which the space-charge forces of the ion beam are neutralized. Recently, a system of four cathodic arc plasma sources has been fabricated and the axial plasma density has been measured. A movable plasma probe array has been developed to measure the radial and axial plasma distribution inside and outside of a {approx} 10 cm long final focus solenoid (FFS). Measured data show that the plasma forms a thin column of diameter {approx} 5 mm along the solenoid axis when the FFS is powered with an 8T field. Measured plasma density of {ge} 1 x 10{sup 13} cm{sup -3} meets the challenge of n{sub p}/Zn{sub b} > 1, where n{sub p} and n{sub b} are the plasma and ion beam density, respectively, and Z is the mean ion charge state of the plasma ions.
Roy, P.K.; Seidl, P.A.; Anders, A.; Bieniosek, F.M.; Coleman, J.E.; Gilson, E.P.; Greenway, W.; Grote, D.P.; Jung, J.Y.; Leitner, M.; Lidia, S.M.; Logan, B.G.; Sefkow, A.B.; Waldron, W.L.; Welch, D.R.
Space reactors. Progress report, October 1981-March 1982
Progress in design studies and technology for the SP-100 Project - successor to the Space Power Advanced Reactor (SPAR) Project - is reported for the period October 1, 1981 to March 31, 1982. The basis for selecting a high-temperature, UO/sub 2/-fueled, heat-pipe-cooled reactor with a thermoelectric conversion system as the 100-kW/sub e/ reference design has been reviewed. Although no change has been made in the general concept, design studies have been done to investigate various reactor/conversion system coupling methods and core design modifications. Thermal and mechanical finite element modeling and three-dimensional Monte Carlo analysis of a core with individual finned fuel elements are reported. Studies of unrestrained fuel irradiation data are discussed that are relevant both to the core modeling work and to the design and fabrication of the first in-pile irradiation test, which is also reported. Work on lithium-filled core heat pipe development is described, including the attainment of 15.6 kW/sub t/ operation at 1525 K for a 2-m-long heat pipe with a 15.7-mm outside diameter. The successful operation of a 5.5-m-long, lightweight potassium/titanium heat pipe at 760 K is described, and test results of a thermoelectric module with GaP-modified SiGe thermoelectric elements are presented.
Ranken, W.A. (comp.)
Moduli spaces of PU(2)-monopoles
The goal of this article was the S^1-equivariant transversality-problem and the compactification-problem for the moduli spaces of (perturbed) PU(2)-monopoles. A substantially improved version entitled "Moduli spaces of PU(2)-monopoles (revised version)" which gives simpler, clearer proofs of the transversality results, has been published on arxiv in June 99 and appeared in Asian J. Math, see Moduli spaces of PU(2)-Monopoles, Asian J. Math. Vol. 4, No. 2 (2000), 391-436.
Andrei Teleman
Space reactors - past, present, and future
In the 1990s and beyond, advanced-design nuclear reactors could represent the prime source of both space power and propulsion. Many sophisticated military and civilian space missions of the future will require first kilowatt and then megawatt levels of power. This paper reviews key technology developments that accompanied past US space nuclear power development efforts, describes on-going programs, and then explores reactor technologies that will satisfy megawatt power level needs and beyond.
Buden, D.; Angelo, J.
Space-time thermodynamics of the glass transition
Space-time Thermodynamics of the Glass Transition Maurobehavior in terms of a thermodynamics of trajectory space.
Merolle, Mauro; Garrahan, Juan P.; Chandler, David
Field Evaluation of Debris Handling and Sediment Clogging of a 2.0-mm Fine-Mesh Traveling Water Screen at the Hawthorn Power Plant, Missouri River, in Kansas City, Missouri
This report presents results of an evaluation of the field performance of a fine-mesh (2.0-mm) traveling water screen (TWS) in a debris- and sediment-laden river. Fine-mesh overlay panels were installed on one intake screen at Kansas City Power and Light's Hawthorn Generating Station on the Missouri River, in Kansas City, Missouri. Its operation relative to an adjoining coarse-mesh (9.5-mm) screen was evaluated over a nearly 22-month period from December 2009 through August 2011.
Models for multimegawatt space power systems
This report describes models for multimegawatt, space power systems which Sandia's Advanced Power Systems Division has constructed to help evaluate space power systems for SDI's Space Power Office. Five system models and models for associated components are presented for both open (power system waste products are exhausted into space) and closed (no waste products) systems: open, burst mode, hydrogen cooled nuclear reactor -- turboalternator system; open, hydrogen-oxygen combustion turboalternator system; closed, nuclear reactor powered Brayton cycle system; closed, liquid metal Rankine cycle system; and closed, in-core, reactor therminonic system. The models estimate performance and mass for the components in each of these systems. 17 refs., 8 figs., 15 tabs.
Edenburn, M.W.
Section D: SPACE HEATING - Energy Information Administration
2001 Residential Energy Consumption Survey Form EIA-457A (2001)--Household Questionnaire OMB No.: 1905-0092, Expiring February 29, 2004 19 Section D: SPACE HEATING
National Aeronautics and Space Administration Technology ...
National Aeronautics and Space Administration Technology Marketing Summaries. Here you�ll find marketing summaries for technologies available for licensing from the ...
Wider benefits of Space Science & Exploration
, batteries, fuel cells, supercapacitors (nuclear) · High impact technologies · Miniature systems · Facilities power sources Deep space missions Improved weather forecasting Climate monitoring Vehicle systems
Anand, Mahesh
Perspectives in Fundamental Physics in Space
We discuss the fundamental principles underlying the current physical theories and the prospects of further improving their knowledge through experiments in space.
Orfeu Bertolami; Clovis Jacinto de Matos; Jean Christophe Grenouilleau; Olivier Minster; Sergio Volonte
Testbed Environment for Space Situational Awareness (TESSA)
TESSA is a parallelized discrete event simulation for large-scale modeling and simulation of space events in a high performance computing environment.
We study the S^1-equivariant transversality-problem and the compactification-problem for the moduli spaces of (perturbed) PU(2)-monopoles.
User interfaces in space science instrumentation .
??This thesis examines user interaction with instrumentation in the specific context of space science. It gathers together existing practice in machine interfaces with a look� (more)
McCalden, A.J.
Upgrading Below-Grade Spaces: Assessing Priorities
Below-Grade Spaces: Below-Grade Spaces: Assessing Priorities Sam Breidenbach [Cold climate bias] Gap-Balancing risk and homeowner expectations * Managing risk and challenges for contractors - Moisture, mold and liability - Durability/Sustainability - Design/build vs. owner's architect - Contract language to reduce liability - Aligning technical details with specific situations - Below grade spaces are business opportunities - Selling and Competition Gap-Balancing risk and homeowner expectations * Homeowner Expectations and Priorities - Focused on "house beautiful" until technical failure occurs - Health related issues - Opportunity to conserve energy - Cost vs. value-"inexpensive additional space" - Expectations not aligned with physical realities.
Towards a routing framework in ad hoc space networks
A routing framework called Space Gateway Routing (SGR) is proposed for routing through Autonomous Regions (ARs) in ad hoc space networks. SGR has two integral parts: External SGR (ESGR) and Interior SGR (ISGR). ESGR ... Keywords: ad hoc networks, autonomous regions, contact allocation, data delivery, inter-region message scheduling, remote control messages, space communications, space gateway routing, space missions, space networks
Chao Chen; Zesheng Chen
Chaotic eigenfunctions in phase space
We study individual eigenstates of quantized area-preserving maps on the 2-torus which are classically chaotic. In order to analyze their semiclassical behavior, we use the Bargmann-Husimi representations for quantum states, as well as their stellar parametrization, which encodes states through a minimal set of points in phase space (the constellation of zeros of the Husimi density). We rigorously prove that a semiclassical uniform distribution of Husimi densities on the torus entails a similar equidistribution for the corresponding constellations. We deduce from this property a universal behavior for the phase patterns of chaotic Bargmann eigenfunctions, which reminds of the WKB approximation for eigenstates of integrable systems (though in a weaker sense). In order to obtain more precise information on ``chaotic eigenconstellations", we then model their properties by ensembles of random states, generalizing former results on the 2-sphere to the torus geometry. This approach yields statistical predictions for the constellations, which fit quite well the chaotic data. We finally observe that specific dynamical information, e.g. the presence of high peaks (like scars) in Husimi densities, can be recovered from the knowledge of a few long-wavelength Fourier coefficients, which therefore appear as valuable order parameters at the level of individual chaotic eigenfunctions.
S. Nonnenmacher; A. Voros
Is Interstellar Space Travel Possible?
It is shown that space travel, even in the most distant future, will remain confined to our own planetary system, and a similar conclusion will hold forth for any other civilization, no matter how advanced it might be, unless those extra-terrestrial species have life spans order of magnitude longer than ours. Even in such a case it is unlikely that they will travel much farther than their immediate stellar neighbourhood, as each such excursion will exhaust the resources of their home planet so much that those will dwindle rather fast and there might not be much left for the further scientific and technological advancements. So the science-fiction fancy of a "Galactic Empire" may ever remain in our fantasies only. And as for the mythical UFOs, whose quiet appearances do get reported in the press once in a while, recent explorations have shown no evidence that any such thing could have an origination within our own solar system itself. And a "quiet trip" back and forth from a distant star is almost impossible a...
Singal, Tanmay
Design principles for the development of space technology maturation laboratories aboard the International Space Station
This thesis formulates seven design principles for the development of laboratories which utilize the International Space Station (ISS) to demonstrate the maturation of space technologies. The principles are derived from ...
Saenz Otero, Alvar, 1975-
Building a time- and space-partitioned architecture for the next generation of space vehicle avionics
Future space systems require innovative computing system architectures, on account of their size, weight, power consumption, cost, safety and maintainability requisites. The AIR (ARINC 653 in Space Real-Time Operating System) architecture answers the ...
Jos� Rufino; Jo�o Craveiro; Paulo Verissimo
Reclaiming residual space from elevated transport infrastructure : time, space, and activity under the Chicago Brown Line
This thesis studies the non-transport functions of the residual space generated by elevated transport infrastructure and its relationship with abutting neighborhoods The space under the Chicago Brown Line, among all other ...
Su, Jing, S.M. Massachusetts Institute of Technology
State space representation of routing flexibility
This paper describes a state space representation for sequencing and routing flexibility in manufacturing systems. Routing flexibility is represented using five different stages as follows: (i) Precedence Graph of Operations; (ii) State Transition Graph ... Keywords: Flexible manufacturing systems, Routing flexibility, Sequencing flexibility, State space representation
Leonardo Rosa Rohde; Denis Borenstein
Optimized Shielding for Space Radiation Protection
Future deep space mission and International Space Station exposures will be dominated by the high-charge and -energy (HZE) ions of the Galactic Cosmic Rays (GCR). A few mammalian systems have been extensively tested over a broad range of ion types and ...
Wilson J. W.; Cucinotta F. A.; Kim M-H. Y.; Schimmerling W.
Electrostatic Climber for Space Elevator and Launcher
Author details research on the new, very prospective, electrostatic Space Elevator climber based on a new electrostatic linear engine previously offered at the 42nd Joint Propulsion Conference (AIAA-2006-5229) and published in AEAT, Vol.78, No.6, 2006, pp. 502-508. The electrostatic climber discussed can have any speed (and braking), the energy for climber movement is delivered by a lightweight high-voltage line into a Space Elevator-holding cable from Earth electric generator. This electric line also can be used for delivery electric energy to a Geosynchronous Space Station. At present, the best solution of the climber problem (announced by NASA as one important awarding problem of Space Elevator) is problematic. Author also shows the linear electrostatic engine may be used as realistic power space launcher at the present time. Two projects illustrate these new devices. Key words: Space elevator, Electrostatic climber for space elevator, Electrostatic space launcher, Electrostatic accelerator. This work is presented as paper AIAA-2007-5838 for 43 Joint Propulsion Conference, Cincinnati, Ohio, USA, 9-11 July, 2007,
A. Bolonkin
TV white-space for smart grid
Inability to obtain frequency spectrum for meeting the surge in demand for wireless solutions has been a worldwide problem. The recent advancement in TV White Space (TVWS), which uses frequency spectrum opportunistically when the incumbent users are ... Keywords: TV white-space, advanced metering infrastructure, cognitive radio, smart grid
Ser Wah Oh; Francois Chin; See Gim Kerk
Machine learning in space: extending our reach
We introduce the challenge of using machine learning effectively in space applications and motivate the domain for future researchers. Machine learning can be used to enable greater autonomy to improve the duration, reliability, cost-effectiveness, and ... Keywords: Autonomy, Machine learning applications, Space missions
Amy Mcgovern; Kiri L. Wagstaff
Quantum Mechanics and Multiply Connected Spaces
t is well known that the difference between Quantum Mechanics and Classical Theory appears most crucially in the non Classical spin half of the former theory and the Wilson-Sommerfelt quantization rule. We argue that this is symptomatic of the fact that Quantum Theory is actually a theory in multiply connected space while Classical Theory operates in simply connected space.
B. G. Sidharth
Mutual information aspects of scale space images
In image registration, mutual information is a well-performing measure based on principles of uncertainty. Similarly, in image analysis the Gaussian scale space, based on minimal assumptions of the image, is used to derive intrinsic properties of an ... Keywords: Entropy, Image analysis, Image structure, Multiresolution, Mutual information, Registration, Scale space
A. Kuijper
Space directed coils for biological objectives
There are given different constructions of electromagnetic coils for using in biomedicine. There are developed constructions of space directed coils for increasing and decreasing the growth of cells in biology and medicine. Keywords: biological objectives, coils, decreasing, growth, increasing, space-directed
V. I. Vlastopulo
Modular Reconfigurable Robots in Space Applications
Robots used for tasks in space have strict requirements. Modular reconfigurable robots have a variety of attributes that are well suited to these conditions, including: serving as many different tools at once (saving weight), packing into compressed ... Keywords: locomotion, modular, robot, self-reconfigurable, snake robot, space
Mark Yim; Kimon Roufas; David Duff; Ying Zhang; Craig Eldershaw; Sam Homans
Beta decays with momentum space Majorana spinors
We construct and apply to beta decays a truly neutral local quantum field that is entirely based upon momentum space Majorana spinors. We make the observation that theory with momentum space Majorana spinors of real C parities is equivalent to Dirac's theory. For imaginary C parities, the neutrino mass can drop from the single beta decay trace and reappear in 0\
M. Kirchbach; C. Compean; L. Noriega
Gravity in Complex Hermitian Space-Time
A generalized theory unifying gravity with electromagnetism was proposed by Einstein in 1945. He considered a Hermitian metric on a real space-time. In this work we review Einstein's idea and generalize it further to consider gravity in a complex Hermitian space-time.
Ali H. Chamseddine
Evaluation and Comparison of Noah and Pleim�Xiu Land Surface Models in MM5 Using G�TE2001 Data: Spatial and Temporal Variations in Near-Surface Air Temperature
In this study, the performance of two advanced land surface models (LSMs; Noah LSM and Pleim�Xiu LSM) coupled with the fifth-generation Pennsylvania State University�National Center for Atmospheric Research Mesoscale Model (MM5), version 3.7.2, ...
J-F. Miao; D. Chen; K. Borne
Cosi, P., Cohen, M.M. & Massaro, D.W. (2002). Baldini: Baldi speaks Italian. In proceedings of 7th International Conference on Spoken Language Processing, (ICSLP`02) (pp.2349-2352). Denver, CO.
Cosi, P., Cohen, M.M. & Massaro, D.W. (2002). Baldini: Baldi speaks Italian. In proceedings of 7th as a second language [24]. We look forward to similar successes for Baldini. 4. REFERENCES [1] Massaro D.W., Perceiving Talking Faces. From Speech Perception to a Behavioral Principle. MIT Press, 1998. [2] Massaro D.W
Medical Applications of Space Light-Emitting Diode Technology--Space Station and Beyond
Space light-emitting diode (LED) technology has provided medicine with a new tool capable of delivering light deep into tissues of the body, at wavelengths which are biologically optimal for cancer treatment and wound healing. This LED technology has already flown on Space Shuttle missions, and shows promise for wound healing applications of benefit to Space Station astronauts.
Whelan, H.T.; Houle, J.M.; Donohoe, D.L.; Bajic, D.M.; Schmidt, M.H.; Reichert, K.W.; Weyenberg, G.T.; Larson, D.L.; Meyer, G.A.; Caviness, J.A.
Space nuclear power: a strategy for tomorrow
Energy: reliable, portable, abundant and low cost will be a most critical factor, perhaps the sine qua non, for the unfolding of man's permanent presence in space. Space-based nuclear power, in turn, is a key technology for developing such space platforms and the transportation systems necessary to service them. A strategy for meeting space power requirements is the development of a 100-kW(e) nuclear reactor system for high earth orbit missions, transportation from Shuttle orbits to geosynchronous orbit, and for outer planet exploration. The component technology for this nuclear power plant is now underway at the Los Alamos National Laboratory. As permanent settlements are established on the Moon and in space, multimegawatt power plants will be needed. This would involve different technology similar to terrestrial nuclear power plants.
Buden, D.; Angelo, J. Jr.
Abstract. An infinite dimensional notion of asymptotic structure is considered. This notion is developed in terms of trees and branches on Banach spaces. Every countably infinite countably branching tree T of a certain type on a space X is presumed to have a branch with some property. It is shown that then X can be embedded into a space with an FDD (Ei) so that all normalized sequences in X which are almost a skipped blocking of (Ei) have that property. As an application of our work we prove that if X is a separable reflexive Banach space and for some 1 0, there exists a finite codimensional subspace of X which C 2 + ? embeds into the ?p sum of finite dimensional spaces. 1.
E. Odell; Th. Schlumprecht
Twistors and antipodes in de Sitter space
We develop the basics of twistor theory in de Sitter space, up to the Penrose transform for free massless fields. We treat de Sitter space as fundamental, as one does for Minkowski space in conventional introductions to twistor theory. This involves viewing twistors as spinors of the de Sitter group SO(4,1). When attached to a spacetime point, such a twistor can be reinterpreted as a local SO(3,1) Dirac spinor. Our approach highlights the antipodal map in de Sitter space, which gives rise to doublings in the standard relations between twistors and spacetime. In particular, one can generate a field with both handedness signs from a single twistor function. Such fields naturally live on antipodally-identified de Sitter space dS_4/Z_2, which has been put forward as the ideal laboratory for quantum gravity with positive cosmological constant.
Neiman, Yasha
Radiation Effects in the Space Telecommunications Environment
Trapped protons and electrons in the Earth's radiation belts and cosmic rays present significant challenges for electronics that must operate reliably in the natural space environment. Single event effects (SEE) can lead to sudden device or system failure, and total dose effects can reduce the lifetime of a telecommmiications system with significant space assets. One of the greatest sources of uncertainty in developing radiation requirements for a space system is accounting for the small but finite probability that the system will be exposed to a massive solar particle event. Once specifications are decided, standard laboratory tests are available to predict the total dose response of MOS and bipolar components in space, but SEE testing of components can be more challenging. Prospects are discussed for device modeling and for the use of standard commercial electronics in space.
Fleetwood, Daniel M.; Winokur, Peter S.
Lab celebrates 50 years in space
celebrates 50 years in space celebrates 50 years in space Community Connections: Our link to Northern New Mexico Communities Latest Issue:Dec. 2013 - Jan. 2014 All Issues » submit Lab celebrates 50 years in space National security missions and pure research December 1, 2013 Lab celebrates 50 years in space Lab's instruments have helped detect possible nuclear weapon detonations and led to fundamental scientific discoveries. Contacts Community Programs Office Director Kurt Steinhaus Email Editor Linda Anderman Email Not only does 2013 mark the Lab's 70th anniversary, it also marks the 50th anniversary of its first mission into space. During those five decades, it's been involved in 206 launches-only a few other organizations in the world can claim more-that began with the goal of helping monitor compliance with the 1963 Partial Test Ban Treaty through
Space Logistics Modeling and Simulation Analysis using SpaceNet: Four Application Cases
The future of space exploration will not be limited to sortie-style missions to single destinations. Even in present exploration taking place at the International Space Station in low-Earth orbit, logistics is complicated by flights arriving from five launch sites on Earth. The future challenges of space logistics given complex campaigns of interconnected missions in deep space will require innovative tools to aid planning and conceptual design. This paper presents a modeling framework to evaluate the propulsive and logistics feasibility of space exploration from the macro-logistics perspective, which covers the delivery of elements and resources to support demands generated during exploration. The modeling framework is implemented in a versatile and unifying software tool, SpaceNet, for general space exploration scenario analysis. Four space exploration scenarios are presented as application cases to highlight the applicability of the framework across vastly different scenarios. The first case investigates the resupply of the International Space Station between 2010 and 2015 using 77 missions combining NASA, European Space Agency, Japanese Space Agency, Russian Space Agency, and commercial space transportation. The second case models a lunar outpost build-up consisting of 17 flights to achieve continuous human presence over eight years. The third case models and evaluates a conceptual sortie-style mission to a near-Earth object, 1999 AO10. Finally, the fourth case models a flexible path type human exploration in the vicinity of Mars using a combination of human and tele-operated exploration. Taken together these cases demonstrate the challenges and logistical requirements of future human space exploration campaigns during the period from 2010-2050 and illustrate the ability of SpaceNet to model and simulate the feasibility of meeting these requirements. I.
Paul T. Grogan; Howard K. Yue; Olivier L. De Weck
The Hardy Space $H^1$ on Non-homogeneous Metric Spaces
Let $({\\mathcal X}, d, \\mu)$ be a metric measure space and satisfy the so-called upper doubling condition and the geometrical doubling condition. In this paper, we introduce the atomic Hardy space $H^1(\\mu)$ and prove that its dual space is the known space ${\\rm RBMO}(\\mu)$ in this context. Using this duality, we establish a criterion for the boundedness of linear operators from $H^1(\\mu)$ to any Banach space. As an application of this criterion, we obtain the boundedness of Calder\\'on--Zygmund operators from $H^1(\\mu)$ to $L^1(\\mu)$.
Hyt�nen, Tuomas; Yang, Dongyong
Geothermal Energy: Residential Space Heating
The purpose of this study, which was carried out under the auspices of the DGRST, was to determine the best way to use geothermal hot water for residential space heating. It quickly became apparent that the type of heating apparatus used in the housing units was most important and that heat pumps could be a valuable asset, making it possible to extract even more geothermal heat and thus substantially improve the cost benefit of the systems. Many factors play a significant role in this problem. Therefore, after a first stage devoted to analyzing the problem through a manual method which proved quite useful, the systematic consideration of all important aspects led us to use a computer to optimize solutions and process a large number of cases. The software used for this general study can also be used to work out particular cases: it is now available to any interested party through DGRST. This program makes it possible to: (1) take climatic conditions into account in a very detailed manner, including temperatures as well as insolation. 864 cases corresponding to 36 typical days divided into 24 hours each were chosen to represent the heating season. They make it possible to define the heating needs of any type of housing unit. (2) simulate and analyze the behavior in practice of a geothermal heating system when heat is extracted from the well by a simple heat exchanger. This simulation makes it possible to evaluate the respective qualities of various types of heating apparatus which can be used in homes. It also makes it possible to define the best control systems for the central system and substations and to assess quite accurately the presence of terminal controls, such as radiators with thermostatically controlled valves. (3) determine to what extent the addition of a heat pump makes it possible to improve the cost benefit of geothermal heating. When its average characteristics and heating use conditions (price, coefficient of performance, length of utilization, electrical rates, etc.) are taken into account, the heat pump should not be scaled for maximum heating power. Consequently, the program considers several possible sizes, with different installation schemes, and selects for each case the value which corresponds to the lowest cost of heating.
Using standard Internet Protocols and applications in space
This paper discusses approaches for using standard Internet technologies to meet the communication needs of future space missions. It summarizes work done by the Operating Missions as Nodes on the Internet (OMNI) project at NASA/GSFC since 1997. That ... Keywords: Internet in space, Internet space missions, Space communication protocols, Space shuttle STS-107, Spacecraft networking
Keith Hogie; Ed Criscuolo; Ron Parise
Climate Monitoring from Space: Asynoptic Sampling Considerations
Monitoring climate variability from space is considered from the standpoint of satellite sampling. Asynoptic sampling leads to well-defined limits in spatial and temporal resolution which are violated by behavior involving sufficiently small ...
Murry L. Salby
Reinterpretation of space in a networked community
One of the most significant reasons why architects dwell on the design of a space is because we believe that the physical environment will influence social and interpersonal relationships. Recognizing the limitations in ...
Park, Kat Suejung, 1973-
SloanSpace- DSpace file transfer component
This thesis demonstrates how to use Web services to integrate course management systems with digital repositories. We present a component that provides interoperation between SloanSpace, a course management system, and ...
Cuevas, Genevieve T
Spacing innovation and learning in design organizations
The main research question of this thesis is the following: What is the relationship between spaces and innovation in the context of design organizations such as IDEO, the MIT Media Lab and Design Continuum? This thesis ...
Garc�a Herrera, Crist�bal, 1974-
Vortex tracking in scale-space
Scale-space techniques have become popular in computer vision for their capability to access the multiscale information inherently contained in images. We show that the field of flow visualization can benefit from these techniques, too, yielding more ...
Dirk Bauer; Ronald Peikert
Social catalysts : embracing communication in mediated spaces
Mediated communication between public spaces is a relatively new concept. One current example of this interaction is video conferencing among people within the same organization. Large scale video-conferencing walls have ...
Karahalios, Kyratso G., 1972-
Effects as functions on projective Hilbert space
The set of effect operators in a complex Hilbert space can be injectively embedded into the set of functions from the set of one-dimensional projections to the real interval [0,1]. Properties of this injection are investigated.
P. Busch; S. P. Gudder
State-Space Modeling for Atmospheric Pollution
Two different aspect concerning the state-space modeling for atmospheric pollution are dealt with separately in this paper: (i) the treatment of the advection-diffusion equation and (ii) the use of time series analysis.
E. Hern�ndez; F. Mart�n; F. Valero
Kinetic modeling of electrodynamic space tethers
Electrodynamic space tethers provide propellant-less orbit boosting and de-orbiting of Low Earth Orbit (LEO) satellites. On the one hand, when driven by a current, their interaction with the Earth's magnetic field creates ...
Deux, Jean-Marie A
Securing Public Space [Awards Jury Commentaries
suited to the EDRA/Places awards. Yet�except for one entry,absent from this year�s awards cycle. Those who design,Vale / Securing Public Space Awards Jury Commentaries Places
Vale, Lawrence J
Scatterometer Data Interpretation: Measurement Space and Inversion
The geophysical interpretation of the radar measurements from the ERS-1 scatterometer, called ?0, is considered. An important tool in the interpretation of the data is the visualization of the triplets of radar backscatter in measurement space. ...
Ad Stoffelen; David Anderson
Open Space Stewardship Program 2013 Celebration
Students in grades K through 12 are involved in authentic environmental research on properties in their own communities, fostering a sense of ownership and responsibility for open space within...
Dutch Space BV | Open Energy Information
Space BV Space BV Jump to: navigation, search Name Dutch Space BV Place Leiden, Netherlands Zip 2333 Sector Solar Product Leiden-based supplier of subsystems for the European space industry, including the production of solar arrays for spacecraft. Coordinates 52.15457°, 4.49463° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":52.15457,"lon":4.49463,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}
Space-Time Insight | Open Energy Information
Space-Time Insight Space-Time Insight Jump to: navigation, search Name Space-Time Insight Address 45680 Northport Loop East Place Fremont, California Zip 94538 Sector Efficiency Product SpaceTime Awareness Server Year founded 2008 Number of employees 11-50 Website http://www.spacetimeinsight.co Coordinates 37.4923832°, -121.9532879° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.4923832,"lon":-121.9532879,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}
Generalized integrability conditions and target space geometry
In some higher dimensional nonlinear field theories integrable subsectors with infinitely many conservation laws have been identified by imposing additional integrability conditions. Originally, the complex eikonal equation was chosen as integrability condition, but recently further generalizations have been proposed. Here we show how these new integrability conditions may be derived from the geometry of the target space and, more precisely, from the Noether currents related to a certain class of target space transformations.
C. Adam; J. Sanchez-Guillen
Flying on Sun Shine: Sailing in Space
On January 20th, 2011, NanoSail-D successfully deployed its sail in space. It was the first solar sail vehicle to orbit the earth and the second sail ever unfurled in space. The 10m2 sail, deployment mechanism and electronics were packed into a 3U CubeSat with a volume of about 3500cc. The NanoSail-D mission had two objectives: eject a nanosatellite from a minisatellite; deploy its sail from a highly compacted volume to validate large structure deployment and potential de-orbit technologies. NanoSail-D was jointly developed by NASA's Marshall Space Flight Center and Ames Research Center. The ManTech/NeXolve Corporation provided key sail design support. NanoSail-D is managed by Marshall and jointly sponsored by the Army Space and Missile Defense Command, the Space Test Program, the Von Braun Center for Science and Innovation and Dynetics Inc. The presentation will provide insights into sailcraft advances and potential missions enabled by this emerging in-space propulsion technology.
Alhorn, Dean (NASA, Marshall Space Flight Center)
Proceedings of the ASCE Earth&Space 2006 Conference, League City, Texas, April 2006 Space Power Grid-Evolutionary Approach To Space Solar Power
Grid- Evolutionary Approach To Space Solar Power N. Komerath, N. Boechler, S. Wanis School of Aerospace architecture towards space- based solar power. The space power grid approach integrates the issues of global warming and energy demand with the technologies for space-based solar power. In the first stage
Concept for lightweight spaced-based deposition technology
and considered for space propulsion. It is proposed toVAT) technology for space propulsion [2], it is now in thePropulsion Conference, Pasadena, CA, M. L. Fulton, "Future space-
Fulton, Michael; Anders, Andre
Table SH7. Average Consumption for Space Heating by Main Space ...
Fuel Oil (gallons) Main Space Heating Fuel Used (physical units of consumption per household using the fuel as a main heating source) Table SH7.
Table SH8. Average Consumption for Space Heating by Main Space ...
Fuel Oil Main Space Heating Fuel Used (million Btu of consumption per household using the fuel as a main heating source) Any Major Fuel 4 Table SH8.
Spaces of Type BLO on Non-homogeneous Metric Measure Spaces
Let $({\\mathcal X}, d, \\mu)$ be a metric measure space and satisfy the so-called upper doubling condition and the geometrically doubling condition. In this paper, the authors introduce the space ${\\mathop\\mathrm{RBLO}}(\\mu)$ and prove that it is a subset of the known space ${\\mathop\\mathrm{RBMO}}(\\mu)$ in this context. Moreover, the authors establish several useful characterizations for the space ${\\mathop\\mathrm{RBLO}}(\\mu)$. As an application, the authors obtain the boundedness of the maximal Calder\\'on-Zygmund operators from $L^\\infty(\\mu)$ to ${\\mathop\\mathrm{RBLO}}(\\mu)$.
Lin, Haibo
MIP-based heuristic for non-standard 3D-packing problems (*)
Space Station, a detailed cargo accommodation analysis has to be performed, for ... to the quoted works for a more detailed analysis. ..... RAM, 74 Gb HD.
Pages that link to "Space Coast Next Generation Solar Energy...
icon Pages that link to "Space Coast Next Generation Solar Energy Center Solar Power Plant" Space Coast Next Generation Solar Energy Center Solar Power Plant Jump...
Changes related to "Space Coast Next Generation Solar Energy...
icon Changes related to "Space Coast Next Generation Solar Energy Center Solar Power Plant" Space Coast Next Generation Solar Energy Center Solar Power Plant Jump...
A Piecewise Linearization Framework for Retail Shelf Space ...
Oct 1, 2004 ... Abstract: Managing shelf space is critical for retailers to attract customers ... essential in-store costs and considers space- and cross-elasticities.
Warm Springs State Hospital Space Heating Low Temperature Geothermal...
Warm Springs State Hospital Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Warm Springs State Hospital Space Heating Low Temperature Geothermal...
Before the House Committee on Science, Space, and Technology...
Before the House Committee on Science, Space, and Technology Testimony of Ernest Moniz, Secretary of Energy Before the House Committee on Science, Space, and Technology...
Klamath Apartment Buildings (13) Space Heating Low Temperature...
Apartment Buildings (13) Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Klamath Apartment Buildings (13) Space Heating Low Temperature...
Before the House Science, Space, and Technology Subcommittee...
Investigations and Oversight Before the House Science, Space, and Technology Subcommittee on Investigations and Oversight Before the House Science, Space, and Technology...
Merle West Medical Center Space Heating Low Temperature Geothermal...
Merle West Medical Center Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Merle West Medical Center Space Heating Low Temperature Geothermal...
Space Heaters, Computers, Cell Phone Chargers: How Plugged In...
Space Heaters, Computers, Cell Phone Chargers: How Plugged In Are Commercial Buildings? Title Space Heaters, Computers, Cell Phone Chargers: How Plugged In Are Commercial...
Multimegawatt power sources for commercial space operations
There is a great deal of interest in commercial operation in space today, but very little consideration of where the power to run such an operation is to come from. For any commercial operation in space, the power source, especially those involving kilowatts and megawatts of power, must be considered at the very onset of the venture. The Multimegawatt Space Reactor Program at the Idaho National Engineering Laboratory is working this problem in conjunction with the development of Strategic Defense Initiative needs. The same type of up-front power development program needs to be considered in all discussions associated with commercial development in space. A system developed for a commercial operation in space will most likely be a hybrid system utilizing both electrical and thermal energy. Even if the commercial process consists totally of high power thermal energy usage, there will be a certain amount of electricity required for controls, mass transport, environmental control (if manned), and communications. The optimum system will thus require a great deal of planning and coordination with the development of the commercial process. 2 refs., 4 figs.
Dearien, J.A.; Martinell, J.S.
Electrostatic AB-Ramjet Space Propulsion
A new electrostatic ramjet space engine is proposed and analyzed. The upper atmosphere (85 -1000 km) is extremely dense in ions (millions per cubic cm). The interplanetary medium contains positive protons from the solar wind. A charged ball collects the ions (protons) from the surrounding area and a special electric engine accelerates the ions to achieve thrust or decelerates the ions to achieve drag. The thrust may have a magnitude of several Newtons. If the ions are decelerated, the engine produces a drag and generates electrical energy. The theory of the new engine is developed. It is shown that the proposed engine driven by a solar battery (or other energy source) can not only support satellites in their orbit for a very long time but can also work as a launcher of space apparatus. The latter capability includes launch to high orbit, to the Moon, to far space, or to the Earth atmosphere (as a return thruster for space apparatus or as a killer of space debris). The proposed ramjet is very useful in interplanetary trips to far planets because it can simultaneously produce thrust or drag and large electric energy using the solar wind. Two scenarios, launch into the upper Earth atmosphere and an interplanetary trip, are simulated and the results illustrate the excellent possibilities of the new concept.
Physics Research on the International Space Station
The International Space Station (ISS) is orbiting Earth at an altitude of around 400 km. It has been manned since November 2000 and currently has a permanent crew of six. On-board ISS science is done in a wide field of sciences, from fundamental physics to biology and human physiology. Many of the experiments utilize the unique conditions of weightlessness, but also the views of space and the Earth are exploited. ESA�s (European Space Agency) ELIPS (European Programme Life and Physical sciences in Space) manages some 150 on-going and planned experiments for ISS, which is expected to be utilized at least to 2020. This presentation will give a short introduction to ISS, followed by an overview of the science field within ELIPS and some resent results. The emphasis, however, will be on ISS experiments which are close to the research performed at CERN. Silicon strip detectors like ALTEA are measuring the flux of ions inside the station. ACES (Atomic Clock Ensemble in Space) will provide unprecedented global ti...
CERN. Geneva
On the Metric of Space-time
Maxwell's equations are obeyed in a one-parameter group of isotropic gravity-free flat space-times whose metric depends upon the value of the group parameter. An experimental determination of this value has been proposed. If it is zero, the metric is Minkowski's. If it is non-zero, the metric is not Poincare invariant and local frequencies of electromagnetic waves change as they propagate. If the group parameter is positive, velocity independent red shifts develop and the group parameter plays a role similar to that of Hubble's constant in determining the relation of these redshifts to propagation distance. In the resulting space-times, the velocity dependence of Doppler shifts is a function of propagation distance. If the group parameter and Hubble's constant have the same order of magnitude, observed frequency shifts in radiation received from stellar sources can imply source velocities quite different from those implied in Minkowski space. In these space-times, electromagnetic waves received from bodies in galactic Kepler orbits undergo frequency shifts which are indistinguishable from shifts currently attributed to dark matter and dark energy in Minkowski space, or to a non-Newtonian physics.
Carl E. Wulfman
Adaptation Space: Surviving Non-Maskable Failures
Some failures cannot be masked by redundancies, because an unanticipated situation occurred, because fault-tolerance measures were not adequate, or because there was a security breach (which is not amenable to replication). Applications that wish to continue to offer some service despite nonmaskable failure must adapt to the loss of resources. When numerous combinations of non-maskable failure modes are considered, the set of possible adaptations becomes complex. This paper presents adaptation spaces, a formalism for navigating among combinations of adaptations. An adaptation space describes a collection of possible adaptations of a software component or system, and provides a uniform way of viewing a group of alternative software adaptations. Adaptation spaces describe the different means for monitoring the conditions that different adaptations depend on, and the particular configurations through which an adaptive application navigate. Our goal is to use adaptation spaces to provide survivable services to applications despite non-maskable failures such as malicious attacks. We present the basic concepts concerning adaptation spaces, with examples. We then present a formal model for reasoning about and selecting alternative adaptations, allowing developers of survivable application to automate their system�s adaptive behavior. 1
Crispin Cowan; Lois Delcambre; Anne-francoise Le Meur; Ling Liu; David Maier; Dylan Mcnamee; Michael Miller; Calton Pu; Perry Wagle; Jonathan Walpole
Demand response-enabled autonomous control for interior space conditioning in residential buildings.
for Interior Space Conditioning . . . . . . . . . .HumanControl in Interior Space Conditioning Problem DescriptionMechanism of Interior Space Conditioning System . . . . . .
Chen, Xue
Stellar science unveiled at space conference
Stellar science unveiled at space conference Stellar science unveiled at space conference Stellar science unveiled at space conference The Laboratory will be represented in more than 20 papers to be given at the 42nd Lunar and Planetary Science Conference in Houston. March 8, 2011 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.
Solar Power Beaming: From Space to Earth
Harvesting solar energy in space and power beaming the collected energy to a receiver station on Earth is a very attractive way to help solve mankind's current energy and environmental problems. However, the colossal and expensive 'first step' required in achieving this goal has to-date stifled its initiation. In this paper, we will demonstrate that recent advance advances in laser and optical technology now make it possible to deploy a space-based system capable of delivering 1 MW of energy to a terrestrial receiver station, via a single unmanned commercial launch into Low Earth Orbit (LEO). Figure 1 depicts the overall concept of our solar power beaming system, showing a large solar collector in space, beaming a coherent laser beam to a receiving station on Earth. We will describe all major subsystems and provide technical and economic discussion to support our conclusions.
Rubenchik, A M; Parker, J M; Beach, R J; Yamamoto, R M
Projective Hilbert space structures at exceptional points
A non-Hermitian complex symmetric 2x2 matrix toy model is used to study projective Hilbert space structures in the vicinity of exceptional points (EPs). The bi-orthogonal eigenvectors of a diagonalizable matrix are Puiseux-expanded in terms of the root vectors at the EP. It is shown that the apparent contradiction between the two incompatible normalization conditions with finite and singular behavior in the EP-limit can be resolved by projectively extending the original Hilbert space. The complementary normalization conditions correspond then to two different affine charts of this enlarged projective Hilbert space. Geometric phase and phase jump behavior are analyzed and the usefulness of the phase rigidity as measure for the distance to EP configurations is demonstrated. Finally, EP-related aspects of PT-symmetrically extended Quantum Mechanics are discussed.
Guenther, Uwe; Samsonov, Boris F
Space does not exist, so time can
It is often said that in general relativity time does not exist. This is because the Einstein equations generate motion in time that is a symmetry of the theory, not true time evolution. In quantum gravity, the timelessness of general relativity clashes with time in quantum theory and leads to the ``problem of time'' which, in its various forms, is the main obstacle to a successful quantum theory of gravity. I argue that the problem of time is a paradox, stemming from an unstated faulty premise. Our faulty assumption is that space is real. I propose that what does not fundamentally exist is not time but space, geometry and gravity. The quantum theory of gravity will be spaceless, not timeless. If we are willing to throw out space, we can keep time and the trade is worth it.
Fotini Markopoulou
Space Nuclear Power: Opening the Final Frontier
Nuclear power sources have enabled or enhanced some of the most challenging and exciting space missions yet conducted, including missions such as the Pioneer flights to Jupiter, Saturn, and beyond; the Voyager flights to Jupiter, Saturn, Uranus, Neptune, and beyond; the Apollo lunar surface experiments; the Viking Lander studies of Mars; the Ulysses mission to study the polar regions of the Sun; the Galileo mission that orbited Jupiter; the Cassini mission orbiting Saturn and the recently launched New Horizons mission to Pluto. In addition, radioisotope heater units have enhanced or enabled the Mars exploration rover missions (Sojourner, Spirit and Opportunity). Since 1961, the United States has successfully flown 41 radioisotope thermoelectric generators (RTGs) and one reactor to provide power for 24 space systems. The former Soviet Union has reportedly flown at least 35 nuclear reactors and at least two RTGs to power 37 space systems. 1.
Gary L. Bennett
Yang-Mills Gravity in Biconformal Space
We propose a new conformal supergravity model with direct relevance to string/gauge theory dualities. This biconformal supergravity theory is formulated with a Yang-Mills type action. The resulting 8-dim symplectic geometries describe 4-dim scale-invariant general relativity. We then show an extension of N = 4 SUSY Yang-Mills to a curved biconformal geometry such that the extended form of the Yang-Mills fields provides the curvatures for the biconformal space. These curvatures solve the biconformal field equations whenever the original 4-dim fields satisfy the 4-dim YM theory. This gives a 1-1 mapping between the gravity and gauge theories. We also display systematic extension of any spacetime co-tangent bundle to a biconformal space, and extension of any 4-dim Yang-Mills theory to an equivalent theory on that space. 1
Lara B. Anderson; James T. Wheeler
Yang Keller and Brown MM 2012.pdf
Genomics Genomics on Pretreatment Inhibitor Tolerance of Zymomonas mobilis Shihui Yang, Martin Keller, and Steven D. Brown Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162 2 Genome Annotation of ZM4 Using Systems Biology Studies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163 3 Identification of Genes Tolerant to Acetate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 3.1 nhaA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 3.2 hfq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169 3.3 nhaA and hfq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 3.4 himA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 4 Heterologous
Okapi at TREC-5 MM Beaulieu
... 1996. A Interactive System Description A.1 GUI interface The interface is an adaptation of the Trec 4 GUI to the BSS written in C, C++ and TCL/TK. ...
MM Personnel - Argonne National Laboratories, Materials Sicence...
Personnel Group Leader Larry Curtiss Principal Investigators Millicent Firestone Urs Geiser John Schlueter Stefan Vajda Hsien-Hau Wang Peter Zapol Resident Associates John...
450 mm Semiconductor Equipment Manufacturing Consortium
... evaluation are critical to ensuring a proposal is complete, well thought-out ... programs within the Government could benefit from the stimulation of the ...
mm-Wave Phase Shifters and Switches
62]), lumped transformer power combining ([57]), andDistributed active transformer-a new power-combining andpower combining networks such as distributed active transformers ([
Adabi Firouzjaei, Ehsan
MM FCNM #11compressed.pptx
... Page 25. � Launch short-wavelength acoustic waves from IR impulsive excitation of nano- ... Page 30. Ultrasensitive to additional mass loading ...
Mineralogic Model (MM3.0) Report
The purpose of this report is to provide a three-dimensional (3-D) representation of the mineral abundance within the geologic framework model domain. The mineralogic model enables project personnel to estimate mineral abundances at any position, within the model region, and within any stratigraphic unit in the model area. The model provides the abundance and distribution of 10 minerals and mineral groups within 22 stratigraphic sequences or model layers in the Yucca Mountain area. The uncertainties and limitations associated with this model are discussed in Section 6.4. Model validation accomplished by corroboration with data not cited as direct input is discussed in Section 7.
A. Sanchez
transmission lines . . . . . . . . . . . . . . . . . . . . . . .4.1.2 Synthesized transmission lines . . . . . . . . .transmission lines . . . . . . . . . . . . . . . . . . .
Concept : Cell Yield Glucose, mM
Culture #12;Typical Growth Rates Growth Rate Doubling time µ [h-1] [h] E. coli 2 0.35 Yeast 0.3 2 Relatively simple procedure Rapid Very high expression level Disasdvantages Codon usage Solubility (inclusion an enhanced E. coli lysate, and a feeding compartment for substrates and energy components. Protein synthesis
Málaga, Universidad de
Mm HL1800E CD) Bedienungsanleitung
and Chairman of the Compensation Committee, Solera Holdings, Inc. All sessions will take place at Northwestern
Kleinfeld, David
Microsoft Word - BM-MM-755.docx
55 55 Title: Repair and Line BM Brine Tank, BMT-1 Description: Subcontractor shall provide all transportation, materials, equipment, supplies, tools, facilities, utilities, labor and supervision required to repair and line the BM brine tank, BMT-1. The tank will be cleaned by others before turning it over to the Subcontractor for repairs. Tasks include welding repair work (if required), welding inspection, tank surface preparation, and lining. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment
Parabolic Weingarten surfaces in hyperbolic space
A surface in hyperbolic space $\\h^3$ invariant by a group of parabolic isometries is called a parabolic surface. In this paper we investigate parabolic surfaces of $\\h^3$ that satisfy a linear Weingarten relation of the form $a\\kappa_1+b\\kappa_2=c$ or $aH+bK=c$, where $a,b,c\\in \\r$ and, as usual, $\\kappa_i$ are the principal curvatures, $H$ is the mean curvature and $K$ is de Gaussian curvature. We classify all parabolic linear Weingarten surfaces in hyperbolic space.
L�pez, Rafael
Bose-Einstein condensation in real space
We illustrate how Bose-Einstein condensation occurs not only in momentum space but also in coordinate (or real) space. Analogies between the isotherms of a van der Waals gas of extended (or finite-diameter) identical atoms and the point (or zero-diameter) particles of an ideal Bose gas allow one to conclude that, in contrast to the van der Waals case, the volume per particle can go to zero in the pure Bose condensate phase precisely because the particle diameter is zero. PACS # 03.75.Hh; 05.30.Jp; 05.70.Fh 1 1
J. J. Valencia; M. De Llano; M. A. Sol�s
Thulium heat sources for space power applications
Reliable power supplies for use in transportation and remote systems will be an important part of space exploration terrestrial activities. A potential power source is available in the rare earth metal, thulium. Fuel sources can be produced by activating Tm-169 targets in the space station reactor. The resulting Tm-170 heat sources can be used in thermoelectric generators to power instrumentation and telecommunications located at remote sites such as weather stations. As the heat source in a dynamic Sterling or Brayton cycle system, the heat source can provide a lightweight power source for rovers or other terrestrial transportation systems.
Alderman, C.J.
Integrating ducts into the conditioned space: Successes and challenges
air into the conditioned space. Further conversations with construction crews indicated that sealing
Siegel, Jeffrey; Walker, Iain
SPGD: A central power system for space title in French
This paper describes the Space Power Generation and Distribution (SPGD) concept for providing power to any satellite in earth orbit via power beaming. Other applications such as providing power for terrestrial or space exploration purposes are identified. An assessment of SPGD versus conventional space power is summarized concluding SPGD appears extremely attractive for our space future. 1 ref.
Widrig, R.D.
State-space models and methods for MIMO communication
transmission schemes, including both spatial multiplexing and space-time codes, assume the availability
Zhang, Chengjin
Global attractors for parabolic problems in fractional power spaces
Keywords: cooperative systems, fractional power spaces, global attractors, reaction-diffusion equations, thin domains
Alexandre Nolasco De Carvalho; Jos� Gaspar Ruas-Filho
In the Vehicle Assembly Building at NASA's Kennedy Space
was tested March 26, 2004. The engines will burn for eight and one-half minutes as Atlantis roars into spaceIn the Vehicle Assembly Building at NASA's Kennedy Space Center, the external fuel tank for space. The external tank carries the fuel that will be used by a trio of space shuttle main engines to lift Atlantis
Infinitesimal Bishop-Gromov condition for Alexandrov spaces
We prove the infinitesimal version of Bishop-Gromov volume comparison condition for Alexandrov spaces.
Kuwae, Kazuhiro
Finsleroid-regular space. Landsberg-to-Berwald implication
By performing required evaluations, we show that in the Finsleroid-regular space the Landsberg-space condition just degenerates to the Berwald-space condition (at any dimension number $N\\ge2$). Simple and clear expository representations are obtained. Due comparisons with the Finsleroid-Finsler space are indicated. Keywords: Finsler metrics, spray coefficients, curvature tensors.
Asanov, G S
Before the Subcommittee on Energy -- House Science, Space, and Technology
-- House Science, Space, and -- House Science, Space, and Technology Committee Before the Subcommittee on Energy -- House Science, Space, and Technology Committee Before the Subcommittee on Energy -- House Science, Space, and Technology Committee Testimony of Christopher Smith, Acting Assistant Secretary Before the Subcommittee on Energy -- House Science, Space, and Technology Committee More Documents & Publications Before the Subcommittee on Energy -- House Science, Space, and Technology Committee Before the Subcommittee on Environment and the Economy -- House Energy and Commerce Committee Before the Subcommittee on Energy -- House Science, Space, and Technology Committee Before the Subcommittee on Energy and Power -- House Energy and Commerce Committee Before the Subcommittees on Energy and Environment - House Committee on
Compactness of the space of causal curves
We prove that the space of causal curves between compact subsets of a separable globally hyperbolic poset is itself compact in the Vietoris topology. Although this result implies the usual result in general relativity, its proof does not require the use of geometry or differentiable structure.
Keye Martin
Creating Chinkin works in the virtual space
In this paper, a method to enable people to experience "Chinkin" in the virtual space is introduced. Chinkin is a traditional artistic technique to draw designs on lacquer ware with fine lines and dots, and it was widely used to produce Daimyo's utensils ...
Shinji Mizuno
A Generalization in Space of Jung's Theorem
Let's have $n$ points in the space such that the maximum distance between any of them is $a$. We prove that there exists a sphere of radius $r \\leq a \\frac{\\sqrt(6)}{4}$ that contains in its interior or on its surface all these points. [This is a generalization of Jung's theorem that he designed for a plane.
Florentin Smarandache
National Aeronautics and Space Administration April 2012
exploration by humans and robots to destinations within and be- yond our solar system is characteristicNational Aeronautics and Space Administration April · 2012 Ground and Launch SyStemS Proce-Unique Infrastructure and Launch Support Systems TA13-8 1.4.3. Limited Demonstration Capability for Ground and Launch
Exploration of the Design Space for the . . .
The ABLV-GT is a conceptual design for an advanced reusable launch vehicle based on the current NASA Langley ABLV concept. It is a Vision Vehicle class, horizontal takeoff, horizontal landing single-stage-to-orbit vehicle. Main propulsion is provided by Aerojet's `Strutjet' LOX/LH2 rocket-based combined cycle engine design. The ABLV-GT is designed to deliver 25,000 lbs. to the orbit of the International Space Station from Kennedy Space Center. This paper will report the findings of a conceptual design study on the ABLV-GT performed over the last year by members of the Space Systems Design Lab at Georgia Tech. This work has been sponsored by the Advanced Reusable Transportation Technologies program office at NASA Marshall Space Flight Center. Details of the concept design including external and internal configuration, mass properties, trajectory analysis, aerodynamics, and aeroheating are given. This vehicle study resulted in the closure of 18 different vehicle designs. The trade vari...
J. Bradford; J. Olds; R. Bechtel; T. Cormier; D. Messitt
MIT Nuclear Space Research Andrew C. Kadak
SELENE MIT Nuclear Space Research Andrew C. Kadak Professor of the Practice Nuclear Science with Nuclear Energy Selene - Sodium-Cooled Epithermal Long-term Exploration Nuclear Engine (MS thesis) The Martian Surface Reactor: An Advanced Nuclear Power Station for Manned Extraterrestrial Exploration
Space, time and nesting Integrated Assessment Models
Integrated Assessment Modelling in the field of air pollution has advanced greatly since the 1985 Helsinki Protocol on the reduction of Sulphur emissions and their transboundary fluxes. With subsequent protocols and increased understanding of the inter-relationships ... Keywords: CLRTAP, Integrated Assessment Modelling, Scale, Science-policy interaction, Space, Time
T. Oxley; H. M. ApSimon
Brain---computer interfaces for space applications
Recent experiments have shown the possibility to use the brain electrical activity to directly control the movement of robots. Such a kind of brain---computer interface is a natural way to augment human capabilities by providing a new interaction link ... Keywords: Astronauts, BCI, Space operations
Cristina Negueruela; Michael Broschart; Carlo Menon; Jos� R. Mill�n
DESCOMP: a new design space exploration approach
In this paper, we introduce a new approach in Design-Space-Exploration (DSE) for non-clustered VLIW architectures. It differs from existing techniques by using a �bottom-up� strategy. While other approaches start with the design of an architecture, ...
Mario Sch�lzel; Peter Bachmann
-weather-prone property and infrastructure includes: · satellites (e.g., solar panels & electronics: exposed to particle, telecommunication, internet, GPS etc.) · utility components (e.g., transformers: exposed to geomagnetic induced in the 1970s typically designed for a life time of ~40 years Space Weather Risks B) Vulnerability Aged
Schrijver, Karel
Deep Space Formation Flying Spacecraft Path Planning
Efficient algorithms for collision-free energy sub-optimal path planning for formations of spacecraft flying in deep space are presented. The idea is to introduce a set of way-points through which the spacecraft are required to pass, combined with ... Keywords: formation flying spacecraft, path planning for multiple mobile robot systems, trajectory generation
Cornel Sultan; Sanjeev Seereram; Raman K. Mehra
Managing Delegated Search Over Design Spaces
Organizations increasingly seek solutions to their open-ended design problems by employing a contest approach in which search over a solution space is delegated to outside agents. We study this new class of problems, which are costly to specify, pose ... Keywords: clustering, open innovation, product design, research and development, search
Sanjiv Erat; Vish Krishnan
Enabling Grid technologies for Planck space mission
PLANCK, the ESA satellite aimed at mapping the microwave sky through two complete sky surveys, will fly in 2007. It is an extremely demanding space mission in terms of computing power and data storage. PLANCK simulations mimic the whole mission starting ... Keywords: CMB, EGEE, HPC, Planck satellite mission, globus, grid computing
Giuliano Taffoni; Davide Maino; Claudio Vuerli; Giuliano Castelli; Riccardo Smareglia; Andrea Zacchei; Fabio Pasian
National Aeronautics and Space Administration Earth Math
to be `one-pagers' with a Teacher's Guide and Answer Key as a second page. This compact form was deemed very molecules you could produce? Space Math http://spacemath.gsfc.nasa.gov #12;1 Answer Key Problem 1 - What;2Answer Key Problem 1 - How many atoms of hydrogen (H), carbon (C) and oxygen (O) are contained
Mesoscale Observations of Lightning from Space Shuttle
Motion pictures have been taken at night by astronauts on the space shuttle showing lightning discharges that spread horizontally at speeds of 105 m s?1 for distances over 60 km. Tape recordings have been made of the accompanying optical pulses ...
B. Yonnegut; O. H. Vaughan Jr.; M. Brook; P. Krehbiel
Mesoscale Time and Space Wind Variability
The results of a program to study the time and space variability of the wind field below 5 km are presented. Wind data were collected using pilot balloons tracked with the METRAC positioning system. Balloons were launched at 10-30 min intervals ...
W. H. Jasperson
- metric information were trained against a single determin- istic checkers heuristic. The main result Gauci and Kenneth O. Stanley Evolutionary Complexity Research Group School of Electrical Engineering in space from what was ex- perienced in training can go wholly unrecognized unless the algorithm is able
Portman, Douglas
Design Scenarios: Enabling transparent parametric design spaces
This paper presents a novel methodology called Design Scenarios (DSs) intended for use in conceptual design of buildings. DS enables multidisciplinary design teams to streamline the requirements definition, alternative generation, analysis, and decision-making ... Keywords: Conceptual design, Design spaces, Ontology, Parametric modeling, Process mapping, Requirements modeling
Victor Gane; John Haymaker
Autonomous Control of Space Reactor Systems
Autonomous and semi-autonomous control is a key element of space reactor design in order to meet the mission requirements of safety, reliability, survivability, and life expectancy. Interrestrial nuclear power plants, human operators are avilable to perform intelligent control functions that are necessary for both normal and abnormal operational conditions.
Belle R. Upadhyaya; K. Zhao; S.R.P. Perillo; Xiaojia Xu; M.G. Na
A compact moduli space for Cohen-Macaulay curves in projective space
We define a moduli functor parametrizing finite maps from a projective (locally) Cohen-Macaulay curve to a fixed projective space. The definition of the functor includes a number of technical conditions, but the most ...
H�nsen, Morten Oskar, 1973-
Time-Dependent Phase-Space Mapping of Space-Charge-Dominated Beams
In this paper we report on a proof of principle experiment for demonstrating the possibility of reconstructing the time resolved-phase-space distribution of a space-charge dominated beam by a tomographic technique which provides us with far more information than a time-sliced emittance. We emphasize that this work describes and demonstrates a new methodology which can be applicable to any beam pulse using imaging methods with the appropriate time resolution for the pulse duration. The combination of a high precision tomographic diagnostic with fast imaging screens and a gated camera are used to produce phase space maps of two beams: one with a parabolic current profile and another with a short perturbation atop a rectangular pulse. The correlations between longitudinal and transverse phase spaces are apparent and their impact on the dynamics is discussed.
D. Stratakis, R.B. Fiorito, I. Haber, R.A. Kishek, P.G. O'Shea, M. Reiser, J.C.T. Thangaraj, K. Tian
Medical Hardware for the Space Environment: An Engineering Experience at the National Aeronautics and Space Administration
The complexity and amount of medical hardware needed by National Aeronautics and Space Administration (NASA) constantly shifts with mission requirements. Early missions such as Mercury, Gemini, and Apollo required minimal, relatively non-complex medical hardware, but as mission lengths have increased from hours to multiple months and mission crew sizes have increased from one to seven, so has the amount and complexity of medical hardware. As such, a need has arisen to develop a methodology by which medical hardware is certified for the space environment in a safe, consistent, and economically viable manner. This record of study documents my experiences certifying medical hardware for the space environment by providing two specific certification examples, a defibrillator, and automated external defibrillator and provides a brief history of the medical hardware used by NASA for its manned space programs.
Reyna, Baraquiel
Consumer thermal energy storage costs for residential hot water, space heating and space cooling systems
The cost of household thermal energy storage (TES) in four utility service areas that are representative for hot water, space heating, and space cooling systems in the United States is presented. There are two major sections of the report: Section 2.0 is a technology characterization of commercially available and developmental/conceptual TES systems; Section 3.0 is an evaluation of the consumer cost of the three TES systems based on typical designs in four utility service areas.
Space Conditioning Standing Technical Committee Strategic Plan
Space Conditioning Standing Technical Space Conditioning Standing Technical Committee Strategic Plan, v2011a Revised: January 2012 Committee Chair: 2011 Eric Martin Janet McIlvaine BA-PIRC Standing Technical Committee Strategic Plan Overview Standing Technical Committees (STCs) focus on resolving key technical action items required to meet Building America performance goals. STC chairs lead each committees' activities in addressing specific research challenges, gaps in understanding, and new research opportunities. Committees include experts from the Building America research teams, DOE, national laboratories, and outside organizations that possess specialized knowledge or heightened interest in the topics being addressed. Committee chairs can create sub-committees on an as-needed basis to address targeted research needs.
Practical free-space quantum cryptography
An experimental free-space quantum key distribution (QKD) system has been tested over an outdoor optical path of {approx} 1 km under nighttime conditions at Los Alamos National Laboratory. This system employs the Bennett 92 protocol; here the authors give a brief overview of this protocol, and describe the experimental implementation of it. An analysis of the system efficiency is presented, as well as a description of the error detection protocol, which employs a two-dimensional parity check scheme. Finally, the susceptibility of this system to eavesdropping by various techniques is determined, and the effectiveness of privacy amplification procedures is discussed. The conclusions are that free-space QKD is both effective and secure; possible applications include the rekeying of satellites in low earth orbit.
Hughes, R.J.; Buttler, W.T.; Kwiat, P.G.; Lamoreaux, S.K.; Luther, G.G.; Morgan, G.L.; Nordholt, J.E.; Peterson, C.G.; Simmons, C.M.
Alcator C-Mod Port Space
Port Space Port Space 3/4/2011 A PORT Top Flange * 10" Inner Flange (2) 2 ¾" Flanges WASP probe(LaBombard) * 10" Outer Flange ????? * 10" Top Flange IR periscope(J.Terry) Horizontal Flange * O-Mode reflectometer (Marmar) * Scanning probe (LaBombard) * 6" window (J. Terry) * Two mini conflat flanges (XXXX) * Penning gauges (B. LaBombard) * Camera array (J. Terry) * Iris shutter (j. Terry) Bottom Flange * Periscope * 10" Inner Ledge and Wall Box Bolometer Connectors(Reinke) * 10" Outer TC Feed-thru Flange(LaBombard) B PORT Top Flange * 10" top Flange Zweben Views (2) (J.Terry) * 10" Outer Flange B-Top Piezo gas valve(Toland) * 10" Outer flange Wall Box AXUV diodes and Lyman-alpha diodes
Space Conditioning Standing Technical Commitee Presentation
Partnership for Improved Residential Construction Partnership for Improved Residential Construction ba-pirc.org Building America Stakeholder Meeting 2012 RESNET Building Performance Conference Space Conditioning Standing Technical Committee Eric Martin and Janet McIlvaine Partnership for Improved Residential Construction Florida Solar Energy Center email@example.com February 29, 2012 2 | Building America Partnership for Improved Residential Construction ba-pirc.org https://sites.google.com/site/bastcspaceconditioning/ Space Conditioning Standing Technical Committee Upcoming Activity Upcoming Activity Files, docs, schedule, etc. Files, docs, schedule, etc. 3 | Building America Partnership for Improved Residential Construction ba-pirc.org * U.S. Department of Energy Building Technologies Program directs the Building America program
Thermodynamics of space quanta models quantum gravity
Canonically quantized 3+1 general relativity with the global one dimensionality (1D) conjecture defines the model, which dimensionally reduced and secondary quantized yields the 1D quantum field theory wherein generic one-point correlations create physical scales. This simple quantum gravity model, however, can be developed in a wider sense. In this paper we propose to consider ab initio thermodynamics of space quanta as the quantum gravity phenomenology. The thermodynamics is constructed in the entropic formalism.
L. A. Glinka
Regression modeling method of space weather prediction
A regression modeling method of space weather prediction is proposed. It allows forecasting Dst index up to 6 hours ahead with about 90% correlation. It can also be used for constructing phenomenological models of interaction between the solar wind and the magnetosphere. With its help two new geoeffective parameters were found: latitudinal and longitudinal flow angles of the solar wind. It was shown that Dst index remembers its previous values for 2000 hours.
Parnowski, Aleksei
Space reactor safety, 1985--1995 lessons learned
Space reactor safety activities and decisions have evolved over the last decade. Important safety decisions have been made in the SP-100, Space Exploration Initiative, NEPSTP, SNTP, and Bimodal Space Reactor programs. In addition, international guidance on space reactor safety has been instituted. Space reactor safety decisions and practices have developed in the areas of inadvertent criticality, reentry, radiological release, orbital operation, programmatic, and policy. In general, the lessons learned point out the importance of carefully reviewing previous safety practices for appropriateness to space nuclear programs in general and to the specific mission under consideration.
Marshall, A.C.
Very Large Aperture Diffractive Space Telescope
A very large (10's of meters) aperture space telescope including two separate spacecraft--an optical primary functioning as a magnifying glass and an optical secondary functioning as an eyepiece. The spacecraft are spaced up to several kilometers apart with the eyepiece directly behind the magnifying glass ''aiming'' at an intended target with their relative orientation determining the optical axis of the telescope and hence the targets being observed. The magnifying glass includes a very large-aperture, very-thin-membrane, diffractive lens, e.g., a Fresnel lens, which intercepts incoming light over its full aperture and focuses it towards the eyepiece. The eyepiece has a much smaller, meter-scale aperture and is designed to move along the focal surface of the magnifying glass, gathering up the incoming light and converting it to high quality images. The positions of the two space craft are controlled both to maintain a good optical focus and to point at desired targets.
Hyde, Roderick Allen
Understanding the Role of UFOs Within Space
this paper, we are concerned with understanding the e#cient planning and management of teaching space, such as lecture rooms, within universities. There is a perception that such space is a rather scarce resource. However, some studies have revealed that in many institutions it is actually chronically under-used [3, 4]. Specifically, overall space-usage e#ciency is measured by the "utilisation" (U ), which is basically the percentage of available "seat-hours" that are exploited: Utilisation, U = used seat-hours total seat-hours available (1) It is also standard practice to measure the overall frequency, F , Frequency, F = used time-slots total time-slots (2) and the room occupancy, O, Occupancy, O = used seat-hours within occupied rooms total seat-hours available within occupied rooms (3) The three measures U , F and O are not independent. If all the rooms were the same size, then, directly from the definitions, we would have U = FO, and a similar relationship continues to hold when we have rooms of di#erent sizes
Exploitation Camille Beyrouthy; Camille Beyrouthy; Edmund K. Burke; J. Dario L; Paul Mcmullan; Andrew J. Parkes
SpacePy - a Python-based library of tools for the space sciences
Space science deals with the bodies within the solar system and the interplanetary medium; the primary focus is on atmospheres and above - at Earth the short timescale variation in the the geomagnetic field, the Van Allen radiation belts and the deposition of energy into the upper atmosphere are key areas of investigation. SpacePy is a package for Python, targeted at the space sciences, that aims to make basic data analysis, modeling and visualization easier. It builds on the capabilities of the well-known NumPy and MatPlotLib packages. Publication quality output direct from analyses is emphasized. The SpacePy project seeks to promote accurate and open research standards by providing an open environment for code development. In the space physics community there has long been a significant reliance on proprietary languages that restrict free transfer of data and reproducibility of results. By providing a comprehensive, open-source library of widely used analysis and visualization tools in a free, modern and intuitive language, we hope that this reliance will be diminished. SpacePy includes implementations of widely used empirical models, statistical techniques used frequently in space science (e.g. superposed epoch analysis), and interfaces to advanced tools such as electron drift shell calculations for radiation belt studies. SpacePy also provides analysis and visualization tools for components of the Space Weather Modeling Framework - currently this only includes the BATS-R-US 3-D magnetohydrodynamic model and the RAM ring current model - including streamline tracing in vector fields. Further development is currently underway. External libraries, which include well-known magnetic field models, high-precision time conversions and coordinate transformations are wrapped for access from Python using SWIG and f2py. The rest of the tools have been implemented directly in Python. The provision of open-source tools to perform common tasks will provide openness in the analysis methods employed in scientific studies and will give access to advanced tools to all space scientists regardless of affiliation or circumstance.
Morley, Steven K [Los Alamos National Laboratory; Welling, Daniel T [Los Alamos National Laboratory; Koller, Josef [Los Alamos National Laboratory; Larsen, Brian A [Los Alamos National Laboratory; Henderson, Michael G [Los Alamos National Laboratory
Simulator Evaluation of Airborne Information for Lateral Spacing (AILS) Concept
The Airborne Information for Lateral Spacing (AILS) concept is designed to support independent parallel approach operations to runways spaced as close as 2500 ft. This report describes the AILS operational concept and the results of a ground-based flight ...
Abbott Terence S.; Elliott Dawn M.
Quantifying flexibility in the operationally responsive space paradigm
Designing complex space systems that will deliver value in the presence of an uncertain future is difficult. As space system lifetimes are now measured in decades, the systems face increased risk from uncertain future ...
Viscito, Lauren
PARABOLIC COMPARISON PRINCIPLE AND QUASIMINIMIZERS IN METRIC MEASURE SPACES JUHA KINNUNEN AND MATHIAS MASSON Abstract. We give several characterizations of parabolic (quasisuper)- minimizers prove a version of com- parison principle for super- and subminimizers on parabolic space-time cylinders
Kinnunen, Juha
Complexity in simplicity: flexible agent-based state space exploration
In this paper, we describe a new flexible framework for state space exploration based on cooperating agents. The idea is to let various agents with different search patterns explore the state space individually and communicate information about fruitful ...
Jacob I. Rasmussen; Gerd Behrmann; Kim G. Larsen
Artificial nature : water infrastructure and its experience as natural space
This work is about water infrastructure and its experience as urban and natural space. It deals with the concepts of nature/geography, technology, and the integral experiential space by analyzing water dams and reservoirs ...
Demirta?, Fatma Asl?han, 1970-
Radon transformation on reductive symmetric spaces: support theorems
We introduce a class of Radon transforms for reductive symmetric spaces, including the horospherical transforms, and study some of their properties. In particular we obtain a generalization of Helgason's support theorem for the horospherical transform on a Riemannian symmetric space.
Kuit, J J
The bioenergetics of walking and running in space suits
Space-suited activity is critical for human spaceflight, and is synonymous with human planetary exploration. Space suits impose kinematic and kinetic boundary conditions that affect movement and locomotion, and in doing ...
Carr, Christopher E. (Christopher Edward), 1976-
You reserve the space. We'll bring the customers.
Feb 9, 2007 ... After Oct. 15, 2007, cost is $25 per square foot. Reserve your space now! See the floor plan on the back of this flier and complete the space�...
Space-Age Ceramics Get Their Toughest Test
Space-Age Ceramics Get Their Toughest Test Space-Age Ceramics Get Their Toughest Test Print Wednesday, 17 April 2013 07:23 Advanced ceramic composites can withstand the ultrahigh...
In-Between Space - Museum of Chinese Tea.
??Project: museum of Chinese tea. Site: in Chinatown of Washington DC. Thesis: What is in-between space? How is in-between space designed in the museum of� (more)
Li, Yanyan
A voice enabled procedure browser for the International Space Station
Clarissa, an experimental voice enabled procedure browser that has recently been deployed on the International Space Station (ISS), is to the best of our knowledge the first spoken dialog system in space. This paper gives background on the system and ...
Manny Rayner; Beth Ann Hockey; Nikos Chatzichrisafis; Kim Farrell; Jean-Michel Renders
Comparative Usability Study of Two Space Logistics Analysis Tools
Future space exploration missions and campaigns will require sophisticated tools to help plan and analyze logistics. To encourage their use, space logistics tools must be usable: a design concept encompassing terms such ...
Lee, Chairwoo
Measuring space systems flexibility : a comprehensive six-element framework
Space systems are extremely delicate and costly engineering artifacts that take a long time to design, manufacture, and launch into space and after they are launched, there is limited access to them. Millions of dollars ...
Nilchiani, Roshanak
Kinetic Solvers with Adaptive Mesh in Phase Space
An Adaptive Mesh in Phase Space (AMPS) methodology has been developed for solving multi-dimensional kinetic equations by the discrete velocity method. A Cartesian mesh for both configuration (r) and velocity (v) spaces is produced using a tree of trees data structure. The mesh in r-space is automatically generated around embedded boundaries and dynamically adapted to local solution properties. The mesh in v-space is created on-the-fly for each cell in r-space. Mappings between neighboring v-space trees implemented for the advection operator in configuration space. We have developed new algorithms for solving the full Boltzmann and linear Boltzmann equations with AMPS. Several recent innovations were used to calculate the full Boltzmann collision integral with dynamically adaptive mesh in velocity space: importance sampling, multi-point projection method, and the variance reduction method. We have developed an efficient algorithm for calculating the linear Boltzmann collision integral for elastic and inelastic...
Arslanbekov, Robert R; Frolova, Anna A
Optimality Conditions for Bilevel Programming Problem in Asplund Spaces
Here, necessary optimal condition for Optimistic Bilevel programming problem is obtained in Asplund spaces. Also we have got necessary optimal conditions in finite dimensional spaces, by assuming differentiability on the given functions.
Pattanaik, Suvendu
Understanding Space Weather: The Sun as a Variable Star
The American Meteorological Society has recently adopted space weather as a new core competency. This is the first in a series of papers discussing the multidisciplinary aspects of space weather. This paper concerns the physics behind solar variability, ...
Keith Strong; Julia Saba; Therese Kucera
Hubble Space Telescope Fine Guidance Sensor Parallaxes of Galactic Cepheid Variable Stars: Period-Luminosity Relations
(abridged) We present new absolute trigonometric parallaxes and relative proper motions for nine Galactic Cepheid variable stars: l Car, zeta Gem, beta Dor, W Sgr, X Sgr, Y Sgr, FF Aql, T Vul, and RT Aur. We obtain these results with astrometric data from Fine Guidance Sensor 1r, a white-light interferometer on Hubble Space Telescope. We find absolute parallaxes with an average sigma_pi/pi = 8%. Two stars (FF Aql and W Sgr) required the inclusion of binary astrometric perturbations, providing Cepheid mass estimates. With these parallaxes we compute absolute magnitudes in V, I, K, and Wesenheit W_{VI} bandpasses corrected for interstellar extinction and Lutz-Kelker-Hanson bias. Adding our previous absolute magnitude determination for delta Cep, we construct Period-Luminosity relations for ten Galactic Cepheids. We compare our new Period-Luminosity relations with those adopted by several recent investigations, including the Freedman and Sandage H_0 projects. Adopting our Period-Luminosity relationship would tend to increase the Sandage H_$ value, but leave the Freedman H_0 unchanged. Comparing our Galactic Cepheid PLR with those derived from LMC Cepheids, we find the slopes for K and W_{VI} identical in the two galaxies within their respective errors. Our data lead to a W_{VI} distance modulus for the Large Magellanic Cloud, m-M = 18.50\\pm0.03, uncorrected for any metallicity effects. Applying recently derived metalllcity corrections yields a corrected LMC distance modulus of (m-M)_0=18.40\\pm0.05. Comparing our Period-Luminosity relationship to solar-metallicity Cepheids in NGC 4258 results in a distance modulus, 29.28 \\pm 0.08, which agrees with that derived from maser studies.
G. Fritz Benedict; Barbara E. McArthur; Michael W. Feast; Thomas G. Barnes; Thomas E. Harrison; Richard J. Patterson; John W. Menzies; Jacob L. Bean; Wendy L. Freedman
Visualizing Space-Based Interactions Among Distributed Agents ...
... Heidelberg 2006. Visualizing Space-Based Interactions Among Distributed ..... Knowledge Generation, Frame Problem, Cognitive Mapping. Lecture Notes in�...
Space isotope power program. Quarterly report, October--December 1968
Progress during October through December 1968 in the Space Isotope Power Program at the Sandia Laboratories is reported. (LCL)
Third-space architecture for learning in 3D
Learning can be increasingly untethered to home, work or school spaces by means of integrative cloud services coupled with 3D worlds, and mobile, collaboratively driven use of digital "third space." A 3rd-space, portable and modular design ... Keywords: learning in 3D, model-based reasoning, virtual environments, visual simulation
Andrew G. Stricker; Kimberly-Combs Hardy; Elizabeth S. Stricker; Toni A. Scribner; John A. Cook; Cynthia A. Calongne; Kathryn L. Flitter; Fil J. Arenas
THE SPITZER SPACE TELESCOPE MISSION M. W. Werner,1
with a cryogenic telescope in space with the great imaging and spectroscopic power of modern detector arraysTHE SPITZER SPACE TELESCOPE MISSION M. W. Werner,1 T. L. Roellig,2 F. J. Low,3 G. H. Rieke,3 M2 Receivved 2004 March 26; accepted 2004 May 26 ABSTRACT The Spitzer Space Telescope, NASA's Great
Galis, Frietson
Dual-Mode Space-Temporal Simultaneous Processing Equalizer
A tapped delayed line adaptive array antenna (TDL-AAA) and a space-temporal simultaneous processing equalizer (ST-SPE) are proposed as simple space-temporal equalizers based on minimum mean square error (MMSE) criterion. The ST-SPE has a compact hardware ... Keywords: MMSE, dual-mode, space-temporal simultaneous processing equalizer
Yoshihiro Ichikawa; Shigeki Obote; Kenichi Kagoshima
Properties of parabolic Sobolev and parabolic Besov spaces
In this paper, we characterize parabolic Besov and parabolic Sobolev spaces in ${\\bf R}^{n+1}$ and ${\\bf R}^{n+1}_T, \\,\\, T > 0$. We also, study the relation between parabolic Besov spaces in ${\\bf R}^{n}_T, \\,\\, T > 0$ and standard Besov space in $\\R$.
Chang, Tongkeun
Parabolic surfaces in hyperbolic space with constant Gaussian curvature
Parabolic surfaces in hyperbolic space with constant Gaussian curvature Rafael L´opez firstname.lastname@example.com Keywords: hyperbolic space, parabolic surface, Gaussian curvature MSC 2000 subject classification: 53A10, 53C45 Abstract A parabolic surface in hyperbolic space H3 is a surface invariant by a group
López, Rafael
A fundamental and practical survey is made of nuclear rocket application to space vehicle propulsion. The engine is described and propellant and radiation effects are discussed. Project Rover is summarized and performance requirements for a space vehicle are discussed. It is concluded that nuclear rockets can provide substantial performance, reliability, and economic advantages for difficult space missions. (T.R.H.)
Schmidt, H.R.; Decker, R.S.
Transactions of the fourth symposium on space nuclear power systems
This paper contains the presented papers at the fourth symposium on space nuclear power systems. Topics of these papers include: space nuclear missions and applications, reactors and shielding, nuclear electric and nuclear propulsion, refractory alloys and high-temperature materials, instrumentation and control, energy conversion and storage, space nuclear fuels, thermal management, nuclear safety, simulation and modeling, and multimegawatt system concepts. (LSP)
El-Genk, M.S.; Hoover, M.D. (eds.)
Debris and Future Space Activities1 Prof. Joel R. Primack
1 Debris and Future Space Activities1 Prof. Joel R. Primack Physics Department, University of California, Santa Cruz, CA 95064, USA Abstract: There is already so much space debris in low orbits this problem. Even one war in space could encase the entire planet in a shell of whizzing debris
A nuclear Frechet space consisting of C -functions and
A nuclear Fr´echet space consisting of C -functions and failing the bounded approximation property Dietmar Vogt Abstract An easy and transparent example is given of a nuclear Fre´echet space failing of Grothendieck whether every nuclear Fr´echet space has the bounded approximation property was open for quite
Vogt, Dietmar
From interaction to participation: configuring space through embodied interaction
When computation moves off the desktop, how will it transform the new spaces that it comes to occupy? How will people encounter and understand these spaces, and how will they interact with each other through the augmented capabilities of such spaces? ...
Amanda Williams; Eric Kabisch; Paul Dourish
Transactions of the fifth symposium on space nuclear power systems
This paper contains the presented papers at the fourth symposium on space nuclear power systems. Topics of these paper include: space nuclear missions and applications, reactors and shielding, nuclear electric and nuclear propulsion, high-temperature materials, instrumentation and control, energy conversion and storage, space nuclear fuels, thermal management, nuclear safety, simulation and modeling, and multimegawatt system concepts. (LSP)
Free Space Computation Using Stochastic Occupancy Grids and Dynamic Programming
1 Free Space Computation Using Stochastic Occupancy Grids and Dynamic Programming Hern´an Badino1Chrysler AG, Stuttgart Abstract. The computation of free space available in an environment is an essential, which builds a stochastic occupancy grid to address the free space problem as a dynamic pro- gramming
Mester, Rudolf
Linear and nonlinear degenerate boundary value problems in Besov spaces
The boundary value problems for linear and nonlinear degenerate differential-operator equations in Banach-valued Besov spaces are studied. Several conditions for the separability of linear elliptic problems are given. Moreover, the positivity and the ... Keywords: Banach-valued Besov spaces, Boundary value problems, Differential-operator equations, Interpolation of Banach spaces, Operator-valued multipliers
Veli B. Shakhmurov; Ravi P. Agarwal
Collision provoked failure sequencing in space reentry vehicles
This work underlines damage prognosis and crashworthiness verification studies aim to provide a fast methodology for investigation of complex and non-linear responses of future advanced reentry space vehicles. The output of the methodology can be broadcast ... Keywords: Crashworthiness, Foreign object damage, Micro-mechanics modeling, Space Shuttle Columbia (STS-107), Space Transportation System
Frank Abdi; Kevin Bowcutt; Cody Godines; Javid Bayandor
Duality in spaces of finite linear combinations of atoms
in Hp . In other words, Hp and Fp are both quotients of the space of "formal series" of (p, )-atoms understand the space Fp we prove now the following. Proposition. Given any sequence of (p, ) atoms aj and anyDuality in spaces of finite linear combinations of atoms Fulvio Ricci and Joan Verdera Abstract
Verdera, Joan
are both quotients of the space of "formal series" of (p, )-atoms with p coefficients, but the equivalence understand the space Fp we prove now the following. Proposition. Given any sequence of (p, ) atoms aj and anyDuality in spaces of finite linear combinations of atoms Fulvio Ricci and Joan Verdera Abstract
Autònoma de Barcelona, Universitat
Surveillance to detect emerging space-time clusters
The interest is on monitoring incoming space-time events to detect an emergent space-time cluster as early as possible. Assume that point process events are continuously recorded in space and time. In a certain unknown moment, a small localized cluster ...
Renato Assun��o; Thais Correa
General Hormander and Mikhlin conditions for multipliers of Besov spaces
Here a new condition for the geometry of Banach spaces is introduced and the operator--valued Fourier multiplier theorems in weighted Besov spaces are obtained. Particularly, connections between the geometry of Banach spaces and Hormander-Mikhlin conditions are established. As an application of main results the regularity properties of degenerate elliptic differential operator equations are investigated.
Shahmurov, Rishad
Null space and eigenspace computations with additive preprocessing
We propose and analyze additive preprocessing for computing a vector in the null space of a matrix and a basis for this space. Due to our preprocessing, instead of singular linear systems we solve nonsingular ones, which preserve the conditioning properties ... Keywords: additive preprocessing, eigenspace computations, ill conditioned matrices, null space computations
Victor Y. Pan; Xiaodong Yan
A Chapter In Space Weather: Physics and Effects
the activity of a particular region of geospace and thus we have space weather modeling for the solar- 1 - A Chapter In Space Weather: Physics and Effects by V. Bothmer and I.A. Daglis (editors) Springer Praxis September 2005 Draft date: March 9, 2007 Forecasting Space Weather Dimitris Vassiliadis ST
Vassiliadis, Dimitrios
Joint spacing criterion for equivalent continuum model
Currently, the Yucca Mountain Site Characterization Project is investigating the feasibility of the disposal of high-level radioactive waste in the unsaturated Topopah Spring formation. The Topopah Spring formation is a heavily fractured, predominantly vertically jointed, welded tuff, and the potential disposal area is cut by the Ghost Dance fault and bounded by several other faults structures. The joints in the tuff and the faults may have an impact on the emplacement drift or borehole stability, as well as on the movement of fluids through the rock mass. The design of the repository drifts and layout, the waste emplacement scheme, and the thermomechanical performance of the rock mass will be analyzed using various numerical models. These models may be based on different assumptions regarding the representation of the fracture behavior under given applied stresses, and will range from discrete models where individual mechanically active fractures are treated distinctly, to continuum models where the joint behavior is smeared over a representative volume. There is always the question of applicability of a model with respect to a given material domain to be analyzed. For the mechanical analysis of the rock mass response around a repository drift, the applicability of an equivalent continuum model is dependent on the joint spacing in the rock mass. Considering the joint spacings that may be encountered at the potential repository site, a ratio of joint spacing to the planned drift diameter may be adopted as a criterion for evaluating the applicability of the Compliant Joint Model (CJM) in the Yucca Mountain Site Characterization Project. In this paper, this criterion is established by reviewing basic continuum concepts and numerical approximation implications used to build the CJM and by examining rock mass conditions that may be encountered at the potential Yucca Mountain repository site.
Tsai, F.C.
How cold can you get in space? Quantum Physics at cryogenic temperatures in space
Although it is often believed that the coldness of space is ideally suited for performing measurements at cryogenic temperatures, this must be regarded with caution for two reasons: Firstly, the sensitive instrument must be completely shielded from the strong solar radiation and therefore, e.g. either be placed inside a satellite or externally on the satellite's shaded side. Secondly, any platform hosting such an experiment in space generally provides an environment close to room temperature for the accommodated equipment. To obtain cryogenic temperatures without active cooling, one must isolate the instrument from radiative and conductive heat exchange with the platform as well as possible. We investigate the limits of this passive cooling method in the context of a recently proposed experiment to observe the decoherence of quantum superpositions of massive objects. The analyses and conclusions are applicable to a host of similar experimental designs requiring a cryogenic environment in space.
Gerald Hechenblaikner; Fabian Hufgard; Johannes Burkhardt; Nikolai Kiesel; Ulrich Johann; Markus Aspelmeyer; Rainer Kaltenbaek
LANL Launches Four Tiny Satellites into Space - Los Alamos in SPACE |
LANL Launches Four Tiny Satellites into Space LANL Launches Four Tiny Satellites into Space "" Colleagues from LANL's Applied Electromagnetics and International, Space, and Response divisions led a rapid- response satellite development capability (Perseus program) and successfully put four tiny "cubeSats"-satellites small enough to hold in one hand-into orbit in December of 2010. The goal of the Perseus program is to develop a rapid-response satellite capability to enable many different mission types. The first phase of the effort focused on (1) demonstrating the ability to build and launch a useful satellite quickly and at low cost, (2) gaining cubeSat build and orbital experience, and (3) validating the LANL design methodology (namely, keeping the design simple, designing to the mission,
Projective Space Codes for the Injection Metric
In the context of error control in random linear network coding, it is useful to construct codes that comprise well-separated collections of subspaces of a vector space over a finite field. In this paper, the metric used is the so-called "injection distance", introduced by Silva and Kschischang. A Gilbert-Varshamov bound for such codes is derived. Using the code-construction framework of Etzion and Silberstein, new non-constant-dimension codes are constructed; these codes contain more codewords than comparable codes designed for the subspace metric.
Khaleghi, Azadeh
Theory of space charge limited currents
Space-charge-limited currents are important in energy devices such as solar cells and light-emitting diodes, but the available theory from the 1950's finds it necessary to postulate an exponential density of defect energy levels to match data. Here we revisit the theory and show that this postulate is not warranted. Instead, we demonstrate that dopants and the concomitant Frenkel effect, which have been neglected, control the shape of measured current-voltage characteristics. We also account for the observed peak in the noise power. Finally, the new theory can anchor efforts to develop experimental techniques to measure deep-trap levels.
Zhang, Xiaoguang [ORNL; Pantelides, Sokrates T. [Vanderbilt University
Kicked rotor quantum resonances in position space
We present an approach of the kicked rotor quantum resonances in position-space, based on its analogy with the optical Talbot effect. This approach leads to a very simple picture of the physical mechanism underlying the dynamics and to analytical expressions for relevant physical quantities, such as mean momentum or kinetic energy. The ballistic behavior, which is closely associated to quantum resonances, is analyzed and shown to emerge from a coherent adding of successive kicks applied to the rotor thanks to a periodic reconstruction of the spatial wavepacket.
Maxence Lepers; V�ronique Zehnl�; Jean Claude Garreau
Lepers, Maxence; Garreau, Jean Claude
Droplet Charging Effects in the Space Environment
Several applications exist for transiting liquid droplets through the near-Earth space environment. Numerical results are presented for the charging of liquid droplets of trimethyl pentaphenyl siloxane (DC705) in three different plasma environments: ionosphere, auroral, and geosynchronous Earth orbit (GEO). Nominal and high geomagnetic activity cases are investigated. In general, high levels of droplet charging (>100 V) exist only in GEO during periods of high geomagnetic or solar activity. An experiment was conducted to assess the charging of silicon-oil droplets due to photoemission. The photoemission yield in the 120-200 nm wavelength range was found to be approximately 0.06.
Joslyn, Thomas B. [United States Air Force Academy, Department of Astronautics, USAF Academy, CO 80840 (United States); Ketsdever, Andrew D. [University of Colorado at Colorado Springs, Department of Mechanical and Aerospace Engineering, Colorado, Springs, CO 80918 (United States)
The moduli space of striped black branes
At finite charge density certain holographic models exhibit the spontaneous breaking of translational invariance resulting in an inhomogeneous phase. We follow up on recent numerical work, reporting results for a larger class of cohomogeneity two black branes in AdS, dual to a holographic striped phase. We construct the continuous moduli space of inhomogeneous black branes as a function of the temperature. Minimising the free energy we determine the dominant striped solutions, revealing a growth in the stripe size as the system is cooled. We discuss the thermodynamic properties of this line of solutions.
Benjamin Withers
Withers, Benjamin
Space cooling demands from office plug loads
Undersizing space cooling systems for office buildings can result in uncomfortable and angry tenants on peak cooling days. However, oversizing wastes money because more capacity is installed than is needed, and oversized systems have a lower energy efficiency which makes operating costs higher than necessary. Oversizing can adversely affect comfort as well, because oversized systems may provide poor humidity control and large temperature variations. Correct system sizing requires estimating building heat loads accurately. This paper discusses the heat load generated by the plug load, which includes any electrical equipment that is plugged into outlets.
Komor, P.
Functional Integration on Constrained Function Spaces
Analogy with Bayesian inference is used to study constrained physical systems within the context of functional integration. Since functional integrals probe function spaces, both kinematical and dynamical constraints are treated simultaneously and on equal footing. Following the analogy, functional counterparts of conditional and conjugate probability distributions are introduced for integrators and then applied to some well-known examples of constrained functional integrals. The analysis leads to some new functional integration tools and methods. These are utilized to construct a model of the prime counting function as a constrained gamma process.
J. LaChapelle
Space nuclear power, propulsion, and related technologies.
Sandia National Laboratories (Sandia) is one of the nation's largest research and development (R&D) facilities, with headquarters at Albuquerque, New Mexico; a laboratory at Livermore, California; and a test range near Tonopah, Nevada. Smaller testing facilities are also operated at other locations. Established in 1945, Sandia was operated by the University of California until 1949, when, at the request of President Truman, Sandia Corporation was formed as a subsidiary of Bell Lab's Western Electric Company to operate Sandia as a service to the U.S. Government without profit or fee. Sandia is currently operated for the U.S. Department of Energy (DOE) by AT&T Technologies, Inc., a wholly-owned subsidiary of AT&T. Sandia's responsibility is national security programs in defense and energy with primary emphasis on nuclear weapon research and development (R&D). However, Sandia also supports a wide variety of projects ranging from basic materials research to the design of specialized parachutes. Assets, owned by DOE and valued at more than $1.2 billion, include about 600 major buildings containing about 372,000 square meters (m2) (4 million square feet [ft2]) of floor space, located on land totalling approximately 1460 square kilometers (km2) (562 square miles [mi]). Sandia employs about 8500 people, the majority in Albuquerque, with about 1000 in Livermore. Approximately 60% of Sandia's employees are in technical and scientific positions, and the remainder are in crafts, skilled labor, and administrative positions. As a multiprogram national laboratory, Sandia has much to offer both industrial and government customers in pursuing space nuclear technologies. The purpose of this brochure is to provide the reader with a brief summary of Sandia's technical capabilities, test facilities, and example programs that relate to military and civilian objectives in space. Sandia is interested in forming partnerships with industry and government organizations, and has already formed several cooperative alliances and agreements. Because of the synergism of multiple governmental and industrial sponsors of many programs, Sandia is frequently able to provide complex technical solutions in a relatively short time, and often at lower cost to a particular customer. They have listed a few ongoing programs at Sandia related to space nuclear technology as examples of the possible synergisms that could result from forming teams and partnerships with related technologies and objectives.
Berman, Marshall
Astronomy, Astrophysics, and Space Physics in Greece
In the present document I review the current organizational structure of Astronomy, Astrophysics and Space Physics in Greece. I briefly present the institutions where professional astronomers are pursuing research, along with some notes of their history, as well as the major astronomical facilities currently available within Greece. I touch upon topics related to graduate studies in Greece and present some statistics on the distribution of Greek astronomers. Even though every attempt is made to substantiate all issues mentioned, some of the views presented have inevitably a personal touch and thus should be treated as such.
V. Charmandaris
Carleson Measures for the Drury-Arveson Hardy space and other Besov-Sobolev spaces on Complex Balls
We characterize the Carleson measures for the Drury-Arveson Hardy space and other Hilbert spaces of analytic functions of several complex variables. This provides sharp estimates for Drury's generalization of Von Neumann's inequality. The characterization is in terms of a geometric condition, the "split tree condition", which reflects the nonisotropic geometry underlying the Drury-Arveson Hardy space.
Arcozzi, N; Sawyer, E
List of Passive Solar Space Heat Incentives | Open Energy Information
Space Heat Incentives Space Heat Incentives Jump to: navigation, search The following contains the list of 278 Passive Solar Space Heat Incentives. CSV (rows 1 - 278) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active Alternative Energy and Energy Conservation Patent Exemption (Corporate) (Massachusetts) Industry Recruitment/Support Massachusetts Commercial Biomass Fuel Cells Geothermal Electric Ground Source Heat Pumps Hydroelectric energy Municipal Solid Waste Passive Solar Space Heat Photovoltaics Solar Space Heat Solar Thermal Electric Solar Thermal Process Heat Solar Water Heat Wind energy Yes Alternative Energy and Energy Conservation Patent Exemption (Personal) (Massachusetts) Industry Recruitment/Support Massachusetts General Public/Consumer Biomass
The ionizing radiation environment in space and its effects
The ionizing radiation environment in space poses a hazard for spacecraft and space crews. The hazardous components of this environment are reviewed and those which contribute to radiation hazards and effects identified. Avoiding the adverse effects of space radiation requires design, planning, monitoring and management. Radiation effects on spacecraft are avoided largely though spacecraft design. Managing radiation exposures of space crews involves not only protective spacecraft design and careful mission planning. Exposures must be managed in real time. The now-casting and forecasting needed to effectively manage crew exposures is presented. The techniques used and the space environment modeling needed to implement these techniques are discussed.
Adams, Jim; Falconer, David; Fry, Dan [Center for Space Plasma and Aeronomic Research (CSPAR), UA Huntsville (United States); Space Radiation Analysis Group, NASA Johnson Space Center (United States)
List of Solar Space Heat Incentives | Open Energy Information
Space Heat Incentives Space Heat Incentives Jump to: navigation, search The following contains the list of 499 Solar Space Heat Incentives. CSV (rows 1 - 499) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active 30% Business Tax Credit for Solar (Vermont) Corporate Tax Credit Vermont Commercial Industrial Photovoltaics Solar Space Heat Solar Thermal Electric Solar Thermal Process Heat Solar Water Heat No APS - Renewable Energy Incentive Program (Arizona) Utility Rebate Program Arizona Commercial Residential Anaerobic Digestion Biomass Daylighting Geothermal Electric Ground Source Heat Pumps Landfill Gas Other Distributed Generation Technologies Photovoltaics Small Hydroelectric Solar Pool Heating Solar Space Heat Solar Thermal Process Heat Solar Water Heat
Released: September, 2008 Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings* ........................... 1,870 1,276 322 138 133 43.0 29.4 7.4 3.2 3.1 Building Floorspace (Square Feet) 1,001 to 5,000 ........................... 243 151 34 40 18 78.7 48.9 11.1 13.0 5.7 5,001 to 10,000 .......................... 202 139 31 29 Q 54.8 37.6 8.5 7.9 Q 10,001 to 25,000 ........................ 300 240 31 21 7 42.5 34.1 4.4 3.0 1.1 25,001 to 50,000 ........................ 250 182 40 11 Q 41.5 30.2 6.6 1.9 Q 50,001 to 100,000 ...................... 236 169 41 8 19 35.4 25.2 6.2 1.2 2.8 100,001 to 200,000 .................... 241 165 54 7 16 36.3 24.8 8.1 1.0 2.4 200,001 to 500,000 .................... 199 130 42 11 16 35.0 22.8 7.5 1.9 2.8 Over 500,000 ............................. 198
Volumes of symmetric spaces via lattice points.
In this paper we show how to use elementary methods to prove that the volume of Sl_k R / Sl_k Z is zeta(2) * zeta(3) * ... * zeta(k) / k. Using a version of reduction theory presented in this paper, we can compute the volumes of certain unbounded regions in Euclidean space by counting lattice points and then appeal to the machinery of Dirichlet series to get estimates of the growth rate of the number of lattice points appearing in the region as the lattice spacing decreases. We also present a proof of the closely related result that the Tamagawa number of Sl_k Q is 1 that is somewhat simpler and more arithmetic than Weil's. His proof proceeds by induction on k and appeals to the Poisson summation formula, whereas the proof here brings to the forefront local versions of the formula, one for each prime p, which help to illuminate the appearance of values of zeta functions in formulas for volumes.
Henri Gillet; Daniel R. Grayson.
Energy storage options for space power
Including energy storage in a space power supply enhances the feasibility of using thermal power cycles (Rankine or Brayton) and providing high-power pulses. Review of storage options (superconducting magnets, capacitors, electrochemical batteries, thermal phase-change materials (PCM), and flywheels) suggests that flywheels and phase-change devices hold the most promise. Latent heat storage using inorganic salts and metallic eutectics offers thermal energy storage densities of 1500 to 2000 kJ/kg at temperatures to 1675/sup 0/K. Innovative techniques allow these media to operate in direct contact with the heat engine working fluid. Enhancing thermal conductivity and/or modifying PCM crystallization habit provide other options. Flywheels of low-strain graphite and Kevlar fibers have achieved mechanical energy storage densities of 300 kJ/kg. With high-strain graphite fibers, storage densities appropriate to space power needs (approx. 550 kJ/kg) seem feasible. Coupling advanced flywheels with emerging high power density homopolar generators and compulsators could result in electric pulse-power storage modules of significantly higher energy density.
Hoffman, H.W.; Martin, J.F.; Olszewski, M.
Biodiesel is a diesel-like fuel that is derived from processing vegetable oils from various sources, such as soy oil, rapeseed or canola oil, and also waste vegetable oils resulting from cooking use. Brookhaven National laboratory initiated an evaluation of the performance of blends of biodiesel and home heating oil in space heating applications under the sponsorship of the Department of Energy (DOE) through the National Renewable Energy Laboratory (NREL). This report is a result of this work performed in the laboratory. A number of blends of varying amounts of a biodiesel in home heating fuel were tested in both a residential heating system and a commercial size boiler. The results demonstrate that blends of biodiesel and heating oil can be used with few or no modifications to the equipment or operating practices in space heating. The results also showed that there were environmental benefits from the biodiesel addition in terms of reductions in smoke and in Nitrogen Oxides (NOx). The latter result was particularly surprising and of course welcome, in view of the previous results in diesel engines where no changes had been seen. Residential size combustion equipment is presently not subject to NOx regulation. If reductions in NOx similar to those observed here hold up in larger size (commercial and industrial) boilers, a significant increase in the use of biodiesel-like fuel blends could become possible.
Released: September, 2008 Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings ............................. 2,037 1,378 338 159 163 42.0 28.4 7.0 3.3 3.4 Building Floorspace (Square Feet) 1,001 to 5,000 ........................... 249 156 35 41 18 78.6 49.1 11.0 12.9 5.6 5,001 to 10,000 .......................... 218 147 32 31 7 54.8 37.1 8.1 7.9 1.7 10,001 to 25,000 ........................ 343 265 34 25 18 43.8 33.9 4.4 3.2 2.3 25,001 to 50,000 ........................ 270 196 41 13 Q 40.9 29.7 6.3 2.0 2.9 50,001 to 100,000 ...................... 269 186 45 13 24 35.8 24.8 6.0 1.8 3.2 100,001 to 200,000 .................... 267 182 56 10 19 35.4 24.1 7.4 1.3 2.6 200,001 to 500,000 .................... 204 134 43 11 17 34.7 22.7 7.3 1.8 2.9 Over 500,000 .............................