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Office of Scientific and Technical Information
Automated micro-tracking planar solar concentrators
E-Print Network (OSTI)
Photonics) University of California, San Diego, 2011UNIVERSITY OF CALIFORNIA, SAN DIEGO Automated Micro-TrackingChair University of California, San Diego iii DEDICATION To
Hallas, Justin Matthew
Non-tracking solar concentrator with a high concentration ratio
DOE Patents (OSTI)
A nontracking solar concentrator with a high concentration ratio is provided. The concentrator includes a plurality of energy absorbers which communicate with a main header by which absorbed heat is removed. Undesired heat flow of those absorbers not being heated by radiant energy at a particular instant is impeded, improving the efficiency of the concentrator.
Hinterberger, Henry (Batavia, IL)
Automated Micro-Tracking Planar Solar Concentrators.
?? One aim of solar concentrators is to reduce the cost of a solar power systems by reducing the amount of expensive semiconductor used in� (more)
Feature-Point Detection Using Distance Transforms: Application to Tracking Tropical Convective Complexes
Science Conference Proceedings (OSTI)
The identification, tracking, and statistical analysis of tropical convective complexes using satellite imagery is explored in the context of identifying feature points suitable for tracking. The feature points are determined based on the shape ...
K. I. Hodges
Evaluation of Interest Point Detectors and Feature Descriptors for Visual Tracking
Applications for real-time visual tracking can be found in many areas, including visual odometry and augmented reality. Interest point detection and feature description form the basis of feature-based tracking, and a variety of algorithms for these tasks ... Keywords: Dataset, Evaluation, Feature descriptors, Interest point detectors, Visual tracking
Steffen Gauglitz; Tobias H�llerer; Matthew Turk
SHADE: a computer model for evaluating the optical performance of two-axis tracking parabolic concentrators
DOE Green Energy (OSTI)
A computer model SHADE (Selection of Heliostat Arrangement for Distributed Engines) has been developed at the Pacific Northwest Laboratory to aid in determining the optical performance of two-axis tracking parabolic concentrators. The shading of individual mirror assemblies in a field of parabolic dishes determines the optimal field arrangement and the most efficient method of plant operation. SHADE provides a simple and inexpensive analytical tool for examining certain design aspects of solar thermal power systems using a network of point-focusing parabolic concentrators.
Apley, W. J.
Tracking heat flux sensors for concentrating solar applications
Innovative tracking heat flux sensors located at or near the solar collector's focus for centering the concentrated image on a receiver assembly. With flux sensors mounted near a receiver's aperture, the flux gradient near the focus of a dish or trough collector can be used to precisely position the focused solar flux on the receiver. The heat flux sensors comprise two closely-coupled thermocouple junctions with opposing electrical polarity that are separated by a thermal resistor. This arrangement creates an electrical signal proportional to heat flux intensity, and largely independent of temperature. The sensors are thermally grounded to allow a temperature difference to develop across the thermal resistor, and are cooled by a heat sink to maintain an acceptable operating temperature.
Andraka, Charles E; Diver, Jr., Richard B
Maximum-Power-Point Tracking Method of Photovoltaic Using Only Single Current Sensor
is proportional to its short current. One of them has a monitor photovoltaic cell to detect its shortMaximum-Power-Point Tracking Method of Photovoltaic Using Only Single Current Sensor Toshihiko» «Solar cell systems» Abstract This paper describes a novel strategy of maximum-power-point tracking
Fujimoto, Hiroshi
RTDS Based Maximal Power Point Tracking Simulation for Doubly-Fed Induction Generator
In the control of the wind generation, the maximal power point tracking (MPPT) control plays important role in the efficiency. This paper presents the simulation results of the MPPT control with RTDS-based DFIG model. At first, it analyzes the vector-control ... Keywords: Wind energy, DFIG((doubly-fed induction generator), Stator flux-oriented, Maximal power point tracking
Jiamin Zhang; Ancheng Xue; Tianshu Bi
Inertial fusion energy target injection, tracking, and beam pointing
Several cryogenic targets must be injected each second into a reaction chamber. Required target speed is about 100 m/s. Required accuracy of the driver beams on target is a few hundred micrometers. Fuel strength is calculated to allow acceleration in excess of 10,000 m/s{sup 2} if the fuel temperature is less than 17 K. A 0.1 {mu}m thick dual membrane will allow nearly 2,000 m/s{sup 2} acceleration. Acceleration is gradually increased and decreased over a few membrane oscillation periods (a few ms), to avoid added stress from vibrations which could otherwise cause a factor of two decrease in allowed acceleration. Movable shielding allows multiple targets to be in flight toward the reaction chamber at once while minimizing neutron heating of subsequent targets. The use of multiple injectors is recommended for redundancy which increases availability and allows a higher pulse rate. Gas gun, rail gun, induction accelerator, and electrostatic accelerator target injection devices are studied, and compared. A gas gun is the preferred device for indirect-drive targets due to its simplicity and proven reliability. With the gas gun, the amount of gas required for each target (about 10 to 100 mg) is acceptable. A revolver loading mechanism is recommended with a cam operated poppet valve to control the gas flow. Cutting vents near the muzzle of the gas gun barrel is recommended to improve accuracy and aid gas pumping. If a railgun is used, we recommend an externally applied magnetic field to reduce required current by an order of magnitude. Optical target tracking is recommended. Up/down counters are suggested to predict target arrival time. Target steering is shown to be feasible and would avoid the need to actively point the beams. Calculations show that induced tumble from electrostatically steering the target is not excessive.
Petzoldt, R.W.
Tracking instrument and control for solar concentrators. Final technical report, October 1979-January 1981
The tracker uses a single photo sensor, and a rotating aperature to obtain tracking accuracies better than 1.5 mrads (0.1 degs). Peak signal detection is used to eliminate tracking of false sources, i.e., clouds, etc. A prism is employed to obtain an extended field of view (150 degs axially - 360 degs radially). The tracker digitally measures the Suns displacement angle relative to the concentrator axis, and repositions it incrementally. This arrangement permits the use of low cost non-servo motors. The local controller contains microprocessor based electronics, incorporating digital signal processing. A single controller may be time shared by a maximum of sixteen trackers, providing a high performance, cost effective solar tracking system, suitable for both line and point focus concentrators. An installation may have the local controller programmed as a standalone unit or slaved to a central controller. When used with a central controller, dynamic data monitoring and logging is available, together with the ability to change system modes and parameters, as desired.
Gray, J; Kuhlman, J
Mirror alignment and focus of point-focus solar concentrators
Distributed point-focusing solar concentrators are being developed for dish-Stirling systems and other applications. Many of these concentrators make use of faceted mirrors that have to be accurately aligned. Some of the solar concentrator designs use stretched-membrane facets that also require focusing. Accurate mirror alignment and focus of faceted solar concentrators have two benefits. First, the concentration ratio of the concentrator/receiver (collector) system is improved with accurate alignment and focus. The receiver aperture diameter can therefore be smaller, thereby reducing thermal losses from the receiver and improving the overall efficiency of the collector. Second, and perhaps more importantly, flux intensities on the receiver can be sensitive to facet alignment and focus. In this paper, the theory and practical application of an alignment and focusing technique are presented. In the technique, light from an artificial source is reflected from the concentrator`s facets to a target. From basic geometric principles, the shape and location of the reflected light on the target can be predicted. Alignment is accomplished by adjusting the facets aim so that the reflected image falls on the predetermined location. To focus a stretched-membrane facet, the reflected image size is adjusted to match that of the target. The governing equations used to draw the alignment targets are developed and the practical application of the technique to the alignment and focus of the Cummins Power Generation, Inc. CPG-460 are presented. Alignment uncertainty associated with this technique on the CPG-460 is also discussed.
Diver, R.B.
Maximum Power Point Tracking Control for Photovoltaic System Using Adaptive Neuro-Fuzzy
converter. II. MATHEMATICAL MODELING OF PHOTOVOLTAIC CELL A PV cell can be represented by an equivalentMaximum Power Point Tracking Control for Photovoltaic System Using Adaptive Neuro- Fuzzy "ANFIS availability and vast potential, world has turned to solar photovoltaic energy to meet out its ever increasing
Recanati, Catherine
Characteristics of Maximum Concentrations from Multiple Point Sources
A simple quasi-Newton numerical scheme is applied to determine the hypothetical worst-case meteorology that will result in the maximum combined concentrations at any receptor location in air quality modeling over short distances for multiple ...
N. M. Zoumakis
Tracking of cell population from time lapse and end point confocal microscopy images with multiple hypothesis Kalman smoothing filters
This paper describes an automated visual tracking system combining time-lapse and end-point confocal microscopy to aid the interpretations of cell behaviors and interactions, with the focus on understanding the sprouting ...
Ong, Lee-Ling S.
Micro-optics for high-efficiency optical performance and simplified tracking for concentrated photovoltaics (CPV).
SciTech Connect
Micro-optical 5mm lenses in 50mm sub-arrays illuminate arrays of photovoltaic cells with 49X concentration. Fine tracking over {+-}10{sup o} FOV in sub-array allows coarse tracking by meter-sized solar panels. Plastic prototype demonstrated for 400nm < {lambda} < 1600 nm. We have designed a solar collector that will be composed of 50-mm-diameter sub-arrays, each containing {approx}100 5-mm plastic micro-lenses. Each micro-lens illuminates a stack of about four 0.7mm PV cells that collect sunlight from 400nm to 1600 nm with a theoretical efficiency approaching 50%. Each sub-array has internal solar tracking and alignment over a {+-}10{sup o} field, so a large array of sub-arrays only needs to coarsely track the sun. The refractive lenses in the design are thin so the optical transmission can be >90% and the optics will weigh very little. There are other optical properties incorporated in this design that help the photovoltaic cells to operate very efficiently. We are building a pre-prototype system now, and will describe our progress at the conference.
Sinclair, Michael B.; Filatov, Anton; Lentine, Anthony L.; Sweatt, William C.; Nielson, Gregory N.; Okandan, Murat; Jared, Bradley Howell
Lidar Measurement of Ammonia Concentrations and Fluxes in a Plume from a Point Source
A field experiment was performed that demonstrated the ability of a scanning carbon dioxide (CO2) coherent lidar system to measure the concentration distribution of ammonia in a plume from a point source. This application of the differential ...
Yanzeng Zhao; W. Alan Brewer; Wynn L. Eberhard; Raul J. Alvarez
DuraCap: a Supercapacitor-Based, Power-Bootstrapping, Maximum Power Point Tracking Energy-Harvesting System
DuraCap: a Supercapacitor-Based, Power-Bootstrapping, Maximum Power Point Tracking Energy that stores harvested energy in supercapacitors and is voltage-compatible with lithium-ion batteries. The use of supercapacitors instead of batter- ies enables DuraCap to extend the operational life time from tens of months
Shinozuka, Masanobu
IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 25, NO. 10, OCTOBER 2010 2531 Maximum Power Point Tracking for Photovoltaic
a maximum power point track- ing algorithm that optimizes solar array performance and adapts to rapidly the natural inverter ripple is designed and tested on a simulated solar array with a grid-tied inverter-variance irradiance data gathered on a rooftop array experiment in Princeton, NJ. The ES controller achieves
Kulkarni, Sanjeev
Hybrid energy storage systems based on compressed air and supercapacitors with maximum efficiency point tracking
This paper presents a hybrid energy storage system based on Compressed Air Energy Storage (CAES), where the charging and discharging is done within maximum efficiency conditions. As the maximum efficiency conditions impose the level of converted power, an intermittent time-modulated operation mode is applied to the thermodynamic converter to obtain a variable converted power. A smoothly variable output power is achieved with the help of a supercapacitive auxiliary storage device used as a filter. The paper describes the concept of the system, the power-electronic interface circuits and especially the Maximum Efficiency Point Tracking (MEPT) algorithm and the strategy used to vary the output power. In addition, the paper will present the characteristics of a high efficiency storage device where the pure pneumatic machine is replaced by an oil-hydraulics and pneumatics converter, used under isothermal conditions. Practical results are also presented, recorded from a low-power pneumatic motor coupled to a small DC generator, as well as from a first prototype of the final hydraulic/pneumatic system.
Sylvain Lemofouet; Alfred Rufer
Comparison of three methods for optical characterization of point-focus concentrators
Three different methods for characterizing point-focus solar concentrator optical performance have been developed for specific applications. These methods include a laser ray trace technique called the Scanning Hartmann Optical Test, a video imaging process called the 2f Test, and on-sun testing in conjunction with optical computer modeling. Three concentrator test articles, each of a different design, were characterized using at least two of the methods and, in one case, all three. The results of these test are compared. Excellent agreement was observed in the results, suggesting that the techniques provide consistent and accurate characterizations of solar concentrator optics.
Wendelin, T.J. [National Renewable Energy Lab., Golden, CO (United States); Grossman, J.W. [Sandia National Labs., Albuquerque, NM (United States)
Co-validation of three methods for optical characterization of point-focus concentrators
Three different methods for characterizing point-focus solar concentrator optical performance have been developed for specific applications. These methods include a laser ray trace technique called the Scanning Hartmann Optical Test, a video imaging process called the 2f Technique and actual on-sun testing in conjunction with optical computer modeling. Three concentrator test articles, each of a different design, were characterized using at least two of the methods and, in one case, all three. The results of these tests are compared in order to validate the methods. Excellent agreement is observed in the results, suggesting that the techniques provide consistent and accurate characterizations of solar concentrator optics.
Microsoft PowerPoint - Tracking the Sun V_Briefing.pptx
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ki th S V Tracking the Sun V An Historical Summary of the Installed Price of Photovoltaics in the United States from 1998 to 2011 Galen Barbose, Nam Darghouth, and Ryan Wiser...
Evaluation of a photovoltaic energy mechatronics system with a built-in quadratic maximum power point tracking algorithm
The historically high cost of crude oil price is stimulating research into solar (green) energy as an alternative energy source. In general, applications with large solar energy output require a maximum power point tracking (MPPT) algorithm to optimize the power generated by the photovoltaic effect. This work aims to provide a stand-alone solution for solar energy applications by integrating a DC/DC buck converter to a newly developed quadratic MPPT algorithm along with its appropriate software and hardware. The quadratic MPPT method utilizes three previously used duty cycles with their corresponding power outputs. It approaches the maximum value by using a second order polynomial formula, which converges faster than the existing MPPT algorithm. The hardware implementation takes advantage of the real-time controller system from National Instruments, USA. Experimental results have shown that the proposed solar mechatronics system can correctly and effectively track the maximum power point without any difficulties. (author)
Chao, R.M.; Ko, S.H.; Lin, I.H. [Department of Systems and Naval Mechatronics Engineering, National Cheng Kung University, Tainan, Taiwan 701 (China); Pai, F.S. [Department of Electronic Engineering, National University of Tainan (China); Chang, C.C. [Department of Environment and Energy, National University of Tainan (China)
Performance of Photovoltaic Maximum Power Point Tracking Algorithms in the Presence of Noise
algorithms for stand- alone photovoltaic systems," Solar Energy Materials and Solar Cells, vol. 90, no. 11 of a maximum power point tracker," in IEEE Photovolatic Specialists Conference, 2008, pp. 13. [10] W. Wu, N
Odam, Kofi
Estimation of E. coli Concentrations from Non Point Sources Using GIS
When developing a Watershed Protection Plan (WPP) or a Total Maximum Daily Load (TMDL), it is often difficult to accurately assess the pollutant load for a watershed because not enough water quality monitoring data are available. According to the Texas Commission on Environmental Quality (TCEQ), there are 274 bacteria impairments in Texas water bodies out of 386 impaired water bodies. Bacteria water quality data are often more sparse than other types of water quality data, which hinders the development of WPPs or TMDLs. The Spatially Explicit Load Enrichment Calculation Tool (SELECT) was used to develop watershed protection plans for four rural watersheds in Texas that are impaired due to E. coli bacteria. SELECT is an automated Geographical Information System (GIS) tool that can assess pathogen loads in watersheds using spatial factors such as land use, population density, and soil type. WPPs were developed for four rural Texas watersheds: Buck Creek, Lampasas River, five sub watersheds of the Little Brazos River, and Geronimo Creek. A spatial watershed model was developed to simulate bacteria concentrations in streams resulting from non point sources using SELECT combined with a simple rainfall-runoff model and applied to the Geronimo Creek watershed. The watershed model applies a rainfall-driven loading function to the potential E. coli loads calculated by the output of SELECT. The simulated runoff volumes and E. coli concentrations from the model were compared to actual monthly E. coli data collected at two sampling sites near the outlet of a subwatershed. The results show how SELECT methodology was applied to each watershed and adapted based on stakeholder concerns and data availability. The highest potential contributors were identified and areas of concern were highlighted to more effectively apply best management practices (BMPs). The runoff volumes were predicted with very good agreement (E = 0.95, RSR = 0.21 to 0.22) for both sampling sites. The predicted E. coli concentrations did not agree with measured concentrations for both sites using eight different methods. The results indicate that the model does not include significant factors contributing to the transport of E. coli bacteria but can be modified to include these factors.
Mckee, Kyna
Manufacturing injection-moleded Fresnel lens parquets for point-focus concentrating photovoltaic systems
This project involved the manufacturing of curved-faceted, injection-molded, four-element Fresnel lens parquets for concentrating photovoltaic arrays. Previous efforts showed that high-efficiency (greater than 82%) Fresnel concentrators could be injection molded. This report encompasses the mold design, molding, and physical testing of a four-lens parquet for a solar photovoltaic concentrator system.
Peters, E.M.; Masso, J.D. [AOtec, Southbridge, MA (United States)
Coherent anti-stokes Raman spectroscopy system for point temperature and major species concentration measurement
The Coherent anti-Stokes Raman Spectroscopy system (CARS) has been developed as a laser-based, advanced, combustion-diagnostic technique to measure temperature and major species concentration. Principles of operation, description of the system and its capabilities, and operational details of this instrument are presented in this report.
Singh, J.P.; Yueh, Fang-Yu
Performance and cost benefits associated with nonimaging secondary concentrators used in point-focus dish solar thermal applications
Using nonimaging secondary concentrators in point-focus applications may permit the development of more cost-effective concentrator systems by either improving performance or reducing costs. Secondaries may also increase design flexibility. The major objective of this study was to develop as complete an understanding as possible of the quantitative performance and cost effects associated with deploying nonimaging secondary concentrators at the focal zone of point-focus solar thermal concentrators. A performance model was developed that uses a Monte Carlo ray-trace procedure to determine the focal plane distribution of a paraboloidal primary as a function of optical parameters. It then calculates the corresponding optimized concentration and thermal efficiency as a function of temperature with and without the secondary. To examine the potential cost benefits associated with secondaries, a preliminary model for the rational optimization of performance versus cost trade-offs was developed. This model suggests a possible 10% to 20% reduction in the cost of delivered energy when secondaries are used. This is a lower limit, and the benefits may even be greater if using a secondary permits the development of inexpensive primary technologies for which the performance would not otherwise be viable. 20 refs., 15 figs., 3 tabs.
O'Gallagher, J.; Winston, R.
SOLERAS - Solar Energy Water Desalination Project: DSET Laboratories. Performance testing of the fresnel point focus concentrating dish
The thernal performance of an 80.3 m/sup 2/ (864 ft/sup 2/) Power Kinetics, Inc. (PKI) fresnel point focus concentrating dish was measured over a period of seven months using SYLTHERM 800 as the heat transfer fluid. Three stages of testing were conducted; initial performance, extended all day operational, and final performance testing. The initial and final performance tests each used three different procedures to measure efficiency in order to quantify the solar concentrator's performance. The all day operational testing represented the ''in situ'' performance of the dish. During the seven months of performance testing, the operation of the dish was thoroughly monitored. All significant problems affecting the normal functioning of the PKI solar concentrator are noted in this report along with any corrective action taken to rectify the problems. Also, a small exposure program was conducted on mirror samples to determine if any reduction in total and specular reflectance occurred due to dirt retention on the mirrors.
Not Available
Two-axis tracking solar collector mechanism
This invention is a novel solar tracking mechanism incorporating a number of practical features that give it superior environmental resilience and exceptional tracking accuracy. The mechanism comprises a lightweight space-frame assembly supporting an array of point-focus Fresnel lenses in a two-axis tracking structure. The system is enclosed under a glass cover which isolates it from environmental exposure and enhances tracking accuracy by eliminating wind loading. Tracking accuracy is also enhanced by the system's broad-based tracking support. The system's primary intended application would be to focus highly concentrated sunlight into optical fibers for transmission to core building illumination zones, and the system may also have potential for photovoltaic or photothermal solar energy conversion. 16 figs.
Johnson, K.C.
This invention is a novel solar tracking mechanism incorporating a number of practical features that give it superior environmental resilience and exceptional tracking accuracy. The mechanism comprises a lightweight space-frame assembly supporting an array of point-focus Fresnel lenses in a two-axis tracking structure. The system is enclosed under a glass cover which isolates it from environmental exposure and enhances tracking accuracy by eliminating wind loading. Tracking accuracy is also enhanced by the system's broad-based tracking support. The system's primary intended application would be to focus highly concentrated sunlight into optical fibers for transmission to core building illumination zones, and the system may also have potential for photovoltaic or photothermal solar energy conversion.
Johnson, Kenneth C. (201 W. California Ave., #401, Sunnyvale, CA 94086)
Johnson, Kenneth C. (201 W. California Ave. #705, Sunnyvale, CA 94086)
An Innovative Approach for the Calculation of Exposure Point Concentrations for Large Areas of Surface Radionuclide Contamination
The Department of Energy Rocky Flats site was designated as a wildlife refuge by the Rocky Flats National Wildlife Refuge Act of 2001. Rocky Flats was considered to be one of the most highly contaminated radiological sites in the country. Some portions of the site have low-level radionuclide contamination in surface soils. A site-wide risk and dose assessment to evaluate threats to human health and the environment were performed, so that the site could be released for this land use. The aggressive accelerated action program combined with defensible and innovative risk assessment methods resulted in there being no radionuclides of concern in the final comprehensive risk assessment (DOE 2006). An innovative approach for delineating functional exposure areas and area-weighted exposure point concentration-activities (EPCs) was negotiated with the regulatory agencies in Colorado. This procedure leads to realistic estimates of risk and dose to workers and visitors. This innovative approach to the calculation of EPCs was negotiated with both State and Federal regulators. The value of developing and maintaining good working relationships with regulators responsible for a site can not be overestimated. The building of trust and confidence among responsible parties and regulators is essential for the development and implementation of innovative methods and technologies.
Winchester Chromec, F.; Myers, Jeffrey C. [7800 E. Union Avenue, Denver, Colorado, 801237 (United States)
Decreasing aqueous mercury concentrations to achieve safe levels in fish: examining the water-fish relationship in two point-source contaminated streams
East Fork Poplar Creek (EFPC) and White Oak Creek (WOC) are two mercury-contaminated streams located on the Department of Energy s Oak Ridge Reservation in east Tennessee. East Fork Poplar Creek is the larger and more contaminated of the two, with average aqueous mercury (Hg) concentrations exceeding those in reference streams by several hundred-fold. Remedial actions over the past 20 years have decreased aqueous Hg concentrations in EFPC by 85 %. Fish fillet concentrations, however, have not responded to this decrease in aqueous Hg and remain above the U.S. Environmental Protection Agency s ambient water quality criterion (AWQC) of 0.3 mg/kg. The lack of correlation between aqueous and fish tissue Hg concentrations in this creek has led to questions regarding the usefulness of target aqueous Hg concentrations and strategies for future remediation efforts. White Oak Creek has a similar contamination history but aqueous Hg concentrations in WOC are an order of magnitude lower than in EFPC. Despite the lower aqueous Hg concentrations, fish fillet concentrations in WOC have also been above the AWQC, making the most recent aqueous Hg target of 200 ng/L in EFPC seem unlikely to result in an effective decrease in fillet Hg concentrations. Recent monitoring efforts in WOC, however, suggest an aqueous total Hg threshold above which Hg bioaccumulation in fish may not respond. This new information could be useful in guiding remedial actions in EFPC and in other point-source contaminated streams.
Mathews, Teresa J [ORNL; Southworth, George R [ORNL; Peterson, Mark J [ORNL; Roy, W Kelly [ORNL; Ketelle, Richard H [ORNL; Valentine, Charles S [ORNL; Gregory, Scott M [ORNL
Solar Tracing Sensors for Maximum Solar Concentrator ...
Concentrating Solar Power (CSP) relies on thermodynamic processes to convert concentrated light into useful forms of energy. Accurate sun tracking ...
Photovoltaic solar concentrator
A photovoltaic solar concentrator is disclosed with one or more transverse-junction solar cells (also termed point contact solar cells) and a lens located above each solar cell to concentrate sunlight onto the solar cell to generate electricity. Piezoelectric actuators tilt or translate each lens to track the sun using a feedback-control circuit which senses the electricity generated by one or more of the solar cells. The piezoelectric actuators can be coupled through a displacement-multiplier linkage to provide an increased range of movement of each lens. Each lens in the solar concentrator can be supported on a frame (also termed a tilt plate) having three legs, with the movement of the legs being controlled by the piezoelectric actuators.
Nielson, Gregory N.; Okandan, Murat; Resnick, Paul J.; Cruz-Campa, Jose Luis
Low-cost manufacturing of the point focus concentrating module and its key component, the Fresnel lens. Final subcontract report, 31 January 1991--6 May 1991
Solar Kinetics, Inc. (SKI) has been developing point-focus concentrating PV modules since 1986. SKI is currently in position to manufacture between 200 to 600 kilowatts annually of the current design by a combination of manual and semi-automated methods. This report reviews the current status of module manufacture and specifies the required approach to achieve a high-volume manufacturing capability and low cost. The approach taken will include process development concurrent with module design for automated manufacturing. The current effort reviews the major manufacturing costs and identifies components and processes whose improvements would produce the greatest effect on manufacturability and cost reduction. The Fresnel lens is one such key component. Investigating specific alternative manufacturing methods and sources has substantially reduced the lens costs and has exceeded the DOE cost-reduction goals. 15 refs.
Saifee, T.; Konnerth, A. III [Solar Kinetics, Inc., Dallas, TX (United States)
ATLAS Tracking Event Data Model -- 12.0.0
offline/? cvsroot=atlas : Tracking/TrkEvent/TrkSegment [14]offline/? cvsroot=atlas : Tracking/TrkEvent/TrkSpacePoint [offline/? cvsroot=atlas : Tracking/TrkDetDescr/TrkSurface
Akesson, F.; ATLAS
Concentrating Photovoltaics
Concentrating photovoltaics (CPV) are a promising alternative to flat-plate photovoltaics in high direct normal irradiance (DNI) environments. The technology�s basic operating characteristics offer significant upside compared with other solar technologies: higher system efficiencies of upwards of 30%+; higher capacity factors, generated through two-axis tracking, exceeding 30% in ideal locations; lower cellular degradation from heat compared to flat-plate PV; lower water requirements; and reduced footpri...
Tracking Hurricanes
There is widespread concern about the recent increase in North Atlantic hurricane activity. Results here suggest that fledgling storms tracking east to west at low latitudes are more likely to reach hurricane intensity than those traveling on a ...
James B. Elsner
Historical Tracking
...Historical tracking is a process of measuring, recording, and analyzing one or more specific characteristics of a process. This record then becomes the basis on which the current state of the process can be assessed and the future state of the process predicted....
Matthew Hallas Master of Science in Electrical Engineering (for the degree Master of Science in Electrical Engineering (Bachelor of Science in Electrical Engineering University of
+; if (yen==0)//if y-axis disabled, enable enableport &= ~(1if (yen==0)//if y-axis disabled, enable enableport &= ~(1disabled, enable enableport &= ~(1
Tracks in the Snow
Tracks in the Snow Tracks in the Snow Nature Bulletin No. 98 January 11, 1947 Forest Preserve District of Cook County William N. Erickson, President Roberts Mann, Superintendent of Conservation TRACKS IN THE SNOW Tracks in the snow tell fascinating stories of the secret lives of the wild animals that are abroad in wintertime -- stories of their search for food and the never-ending warfare between the hunter and the hunted. Walking through the woods, we came upon the trail of a red fox. The footprints of a fox are more pointed than those of a dog, more nearly in a straight line, and the hind foot is placed exactly on the print of the corresponding front foot. More-over, this fox had walked out across a meadow to a big ant hill on top of which he sat to listen and test the wind for scent. A dog will not do that. Later, back in the woods, he had jumped on a fallen tree and trotted along its length. A dog will not do that, either. The fox was traveling leisurely, pausing here and there to sniff at tufts of grass and other possible hiding places for mice.
Peak power tracking for a solar buck charger
This thesis discusses the design, implementation, and testing of a buck converter with peak power tracking. The peak power tracker uses a perturb and observe algorithm to actively track the solar panel's peak power point ...
Cohen, Jeremy Michael, M. Eng. Massachusetts Institute of Technology
Composite Ship Track Characteristics
The physical and radiative properties of a composite ship track are described from the analysis of 131 ship�ship track correlation pairs collected during the Monterey Area Ship Track experiment. The significant variability of ship tracks around ...
P. A. Durkee; R. E. Chartier; A. Brown; E. J. Trehubenko; S. D. Rogerson; C. Skupniewicz; K. E. Nielsen; S. Platnick; M. D. King
Parabolic concentrating collector: a tutorial
A tutorial overview of point-focusing parabolic collectors is presented. Optical and thermal characteristics of such collectors are discussed. Data representing typical achievable collector efficiencies are presented and the importance of balancing collector cost with concentrator quality is argued through the development of a figure of merit for the collector. The impact of receiver temperature on performance is assessed and the general observation made that temperatures much in excess of 1500 to 2000/sup 0/F can actually result in decreased performance. Various types of two-axis tracking collectors are described, including the standard parabolic deep dish, Cassegrainian and Fresnel, as well as two forms of fixed mirrors with articulating receivers. The present DOE program to develop these devices is briefly discussed, as are present and projected costs for these collectors. Pricing information is presented for the only known commercial design available on the open market.
Truscello, V.C.
Visual Tracking of Real World Objects
This paper describes the progress made towards tracking an object visually using a PIN diode attached to a dual mirror deflection system which enables the PIN diode to "optically point" to any position in two-space. A ...
Speckert, Glen
Solar photovoltaic panels tracking system
This research project concentrates on the design and control of a two-degrees-of-freedom orientation system for the photovoltaic solar panels in sunny regions which are considered very rich in solar energy. A brief background on the sun path and behavior ... Keywords: altitude, azimuth, closed-loop control, open-loop control, orientation, sensor, solar photovoltaic panels, solar tracking
Ahmed Abu Hanieh
Tracking the Libor Rate
Paper 1108R2 Paper 1108R) Tracking the Libor Rate Rosa M.revision 2013 by author(s). Tracking the Libor Rate Rosa M.providing a methodology for tracking the dynamic integrity
Abrantes-Metz, Rosa; Villas-Boas, Sofia B.; Judge, George G.
Electromechanical solar tracking apparatus
The invention relates to an electromechanical solar tracking device which tracks the position of the sun using paired, partially-shaded bimetallic elements.
Stromberg, Robert P. (Albuquerque, NM)
Linear Concentrator System Basics for Concentrating Solar Power |
Energy.gov (U.S. Department of Energy (DOE)) Indexed Site
Linear Concentrator System Basics for Concentrating Solar Power Linear Concentrator System Basics for Concentrating Solar Power Linear Concentrator System Basics for Concentrating Solar Power August 20, 2013 - 4:45pm Addthis Photo of numerous parallel rows of parabolic trough collectors tracking the sun. Cooling towers and other generator equipment are in the midst of the troughs, and two water tanks are in the background. The Solar Electric Generating Station IV power plant in California consists of many parallel rows of parabolic trough collectors that track the sun. The cooling towers can be seen with the water plume rising into the air, and white water tanks are in the background. Credit: Sandia National Laboratory / PIX 14955 Linear concentrating solar power (CSP) collectors capture the sun's energy with large mirrors that reflect and focus the sunlight onto a linear
Solar tracking apparatus
The invention relates to a solar tracking device which tracks the position of the sun using paired, partially-shaded photocells. Auxiliary photocells are used for initial acquisition of the sun and for the suppression of false tracking when the sun is obscured by clouds.
Hammons, Burrell E. (Albuquerque, NM)
Tracking & Troubleshooting Online Vouchers
Tracking & Troubleshooting Online Vouchers NUFinancials Supply Chain Job Aid Tracking & Troubleshooting Online Vouchers 10/20/2010 - rb NEED HELP? Call 847491HELP firstname.lastname@example.com © 2012 & Troubleshooting Online Vouchers NUFinancials Supply Chain Job Aid Tracking & Troubleshooting Online Vouchers 10
Shull, Kenneth R.
Concentrator-quality evaluation
The performance of a reflecting solar concentrator depends, of course, on its surface reflectance, but there are other important factors. Among these are sun-tracking errors, surface-slope errors, and surface irregularities. It is appropriate to use statistics to describe and analyze these non-deterministic factors. A scheme for specifying the quality of a solar concentrator that includes all these effects is described and illustrated. It is believed that this procedure is optimum in the sense that it requires a minimum of measurements to obtain a complete enough description of a concentrator to determine its optical performance under any operating geometry. The specification scheme is, therefore, suitable for use in general systems analysis studies involving solar concentrators.
Biggs, F.; Vittitoe, C.N.
Power Tower Systems for Concentrating Solar Power
Energy.gov (U.S. Department of Energy (DOE))
In power tower concentrating solar power systems, numerous large, flat, sun-tracking mirrors, known as heliostats, focus sunlight onto a receiver at the top of a tall tower. A heat-transfer fluid...
Storm Track Dynamics
This paper reviews the current state of observational, theoretical, and modeling knowledge of the midlatitude storm tracks of the Northern Hemisphere cool season.
Edmund K. M. Chang; Sukyoung Lee; Kyle L. Swanson
Robust lane detection and tracking in challenging scenarios
7], Wang et al. used a B-spline curve to represent a curvedroad. In a B-spline representation, control points residealgorithm to initialize their B-spline SNAKE tracking algo-
Kim, ZuWhan
A Two-Axis Tracking System with Datalogger
A versatile two-axis tracking system with datalogger is presented. It is designed with regard to high pointing accuracy, high torque and mechanical load, high accuracy of the data acquisition, extended weather resistance, remote operability, and ...
Meinhard Seefeldner; Andreas Oppenrieder; Dieter Rabus; Joachim Reuder; Mathias Schreier; Peter Hoeppe; Peter Koepke
Tropical Cyclone Tracking Using a Neighbor Enclosed Area Tracking Algorithm
Tropical cyclone (TC) tracking is essential for calculating TC statistics from gridded datasets. A new method for TC tracking is presented here using neighbor enclosed area tracking (NEAT), which is based on the temporal overlap of enclosed areas ...
Yuya Satake; Masaru Inatsu; Masato Mori; Akira Hasegawa
Tropical cyclone tracking using a neighbor enclosed area tracking algorithm
Evidence of small-scale magnetic concentrations dragged by vortex motion of solar photospheric plasma
Vortex-type motions have been measured by tracking bright points in high-resolution observations of the solar photosphere. These small-scale motions are thought to be determinant in the evolution of magnetic footpoints and their interaction with plasma and therefore likely to play a role in heating the upper solar atmosphere by twisting magnetic flux tubes. We report the observation of magnetic concentrations being dragged towards the center of a convective vortex motion in the solar photosphere from high-resolution ground-based and space-borne data. We describe this event by analyzing a series of images at different solar atmospheric layers. By computing horizontal proper motions, we detect a vortex whose center appears to be the draining point for the magnetic concentrations detected in magnetograms and well-correlated with the locations of bright points seen in G-band and CN images.
Balmaceda, L; Palacios, J; Cabello, I; Domingo, V
Adaptive Constraints for Feature Tracking
In this paper extensions to an existing tracking algorithm are described. These extensions implement adaptive tracking constraints in the form of regional upper-bound displacements and an adaptive track smoothness constraint. Together, these ...
Feature Tracking Using Reeb Graphs
H.W. , Wegner, R. : Volume tracking using higher dimensionalShen, H.W. : Ef?cient isosurface tracking using precomputedBell, J. : Analyzing and tracking burning structures in lean
Weber, Gunther H.
a simple GPU based particle tracking code, TracyGPU, isP U COMPUTING FOR PARTICLE TRACKING Hiroshi Nishimura, K a iCOMPUTING FOR PARTICLE TRACKING * Hiroshi Nishimura ', Kai
Nishimura, Hiroshi
Object tracking via uncertainty minimization
Color and texture provide important visual information for real-time tracking of non-rigid and partially occluded objects. Recent developments have shown the robustness and effectiveness of color based tracking algorithms, especially for tracking tasks ...
Albert Akhriev
Talking Points
U.S. Energy Information Administration (EIA) Indexed Site
Talking Points Talking Points NATURAL GAS MARKET INTEGRITY: How EIA Helps Presentation by William F. Hederman Congressional Research Service at EIA 30 th Anniversary Conference April 8, 2008 Washington, DC INTRODUCTION 1. Price levels and volatility cause suspicions. 2. Actual integrity and perceived integrity are both important for markets. 3. EIA was created in response to a crisis of confidence in energy market information. CANDIDATE INTEGRITY CRITERIA 1. Transparency 2. Efficiency (gathering, reporting, monitoring data) v. equity 3. Stability/predictability v. dynamism/volatility 4. Clarity (understanding) "DRAFT" TEN COMMANDMENTS/SUGGESTIONS 1. First presented at World Energy Congress, Rome, Nov. 2007 panel on Energy Market Integrity.
Parameterization of the Two-Point Velocity Correlation Function in a Two-Particle Lagrangian Stochastic Model and Its Effect on the Prediction of Concentration Variances due to a Line Source
A Lagrangian stochastic model, in which a new parameterization of the two-point velocity correlation function is included, is investigated. Model simulations of temperature variances caused by a line source in an inhomogeneous wind-tunnel ...
J. E. Cohen; A. M. Reynolds
Check Point
Protocol Support for High Availability of IKEv2/IPsec The IPsec protocol suite is widely used for business-critical network traffic. In order to make IPsec deployments highly available, more scalable, and failure-resistant, they are often implemented as IPsec High Availability (HA) clusters. However, there are many issues in IPsec HA clustering, and in particular in Internet Key Exchange Protocol version 2 (IKEv2) clustering. An earlier document, "IPsec Cluster Problem Statement", enumerates the issues encountered in the IKEv2/IPsec HA cluster environment. This document resolves these issues with the least possible change to the protocol. This document defines an extension to the IKEv2 protocol to solve the main issues of "IPsec Cluster Problem Statement " in the commonly deployed hot standby cluster, and provides implementation advice for other issues. The main issues solved are the synchronization of IKEv2 Message ID counters, and of IPsec replay counters. Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the
R. Singh; G. Kalyani; Y. Nir; Y. Sheffer; D. Zhang
Software Services: Tracking
Tracking Good project management is the cornerstone of any successful project. It help ensure delivery of a quality product that is on time and that meets its goals. To this end,...
Airborne Tracking Sunphotometer
An airborne tracking sunphotometer, mounted on the outside top surface of an aircraft has been developed to provide unrestricted viewing of the Sun. This instrument will substantially increase the data that scientists can gather for atmospheric ...
Tak Matsumoto; Philip Russell; Cesar Mina; William Van Ark; Victor Banta
Investigating the Libor Rate,� mimeo. Abrantes-Metz, R. ,Libor data: Historial 1 month Libor rates, British Bankers1108R) Tracking the Libor Rate Rosa M. Abrantes-Metz , Sofia
Energy Tracking Software Platform
Acceleration has created an interactive energy tracking and visualization platform that supports decreasing electric, water, and gas usage. Homeowners have access to tools that allow them to gauge their use and track progress toward a smaller energy footprint. Real estate agents have access to consumption data, allowing for sharing a comparison with potential home buyers. Home builders have the opportunity to compare their neighborhood's energy efficiency with competitors. Home energy raters have a tool for gauging the progress of their clients after efficiency changes. And, social groups are able to help encourage members to reduce their energy bills and help their environment. EnergyIT.com is the business umbrella for all energy tracking solutions and is designed to provide information about our energy tracking software and promote sales. CompareAndConserve.com (Gainesville-Green.com) helps homeowners conserve energy through education and competition. ToolsForTenants.com helps renters factor energy usage into their housing decisions.
Ryan Davis; Nathan Bird; Rebecca Birx; Hal Knowles
Localization and Tracking
Abstract�Reliable obstacle detection and localization is a key issue for driver assistance systems, particularly in urban environments. In this study a multi-modal perception approach is investigated, the objective being to enhance vehicle localization and dynamic object tracking in a world-centric map. A 3D ego-localization is achieved by merging information from a stereo vision system and data obtained from vehicle sensors. Mobile objects are detected using a multi-layer lidar that is also used to identify a constrained search space within the multiple target tracking process. Object localization and tracking is then performed in the fixed frame, which facilitates analysis and understanding of the scene. Experimental results using real world data are performed to evaluate the performance of the multi-modal system, and these are presented to show the effectiveness of the approach. Index Terms�Multi-modal perception, visual odometry, object tracking, dynamic map, intelligent vehicles. I.
Sergio A. Rodr�guez F; Vincent Fr�mont; V�ronique Cherfaoui
Solar tracking system
This report describes an automated solar tracking system which is adaptable to most solar collectors which require alignment with the sun's radiation. The system uses partially shaded photovoltaic solar cells to produce error signals for both elevation and azimuth tracking with a high degree of accuracy. An electrical circuit processes the error signals and controls gearmotors to direct the solar collector toward the sun.
Hammons, B.E.
Original article: Comparison of maximum peak power tracking algorithms for a small wind turbine
This paper reviews maximum power point tracking (MPPT) algorithms dedicated for small wind turbines (SWTs). Many control strategies with different features are available and it is very important to select proper one in order to achieve best performance ... Keywords: Maximum power point tracking (MPPT), PMSG, Small wind turbine (SWT)
R. Kot, M. Rolak, M. Malinowski
Optimized Maximum Power Point Tracker for Fast Changing Environmental Conditions
working point to the optimum, following the weather (i.e. solar irradiance and temperature) conditions Tracking, Photovoltaic, Solar I. INTRODUCTION The worldwide installed PV power capacity today shows topologies, which provide high performance tracking during 'nice' weather conditions, i.e. at strong
Sera, Dezso
Parallelized sigma-point Kalman filtering for structural dynamics
In this paper, the sigma-point Kalman filter (S-PKF) is adopted to track the state of composite structures undergoing impact-induced delamination. Estimates provided by the S-PKF are obtained through a set of sigma-points, which independently evolve ... Keywords: Composite delamination, Interface models, Kalman filter, Nonlinear dynamics, Sigma-point (unscented) transformation
Saeed Eftekhar Azam; Aldo Ghisi; Stefano Mariani
Dielectric compound parabolic concentrating solar collector with frustrated total internal reflection absorber
Since its introduction, the concept of nonimaging solar concentrators, as exemplified by the compound parabolic concentrator (CPC) design, has greatly enhanced the ability to collect solar energy efficiently in thermal and photovoltaic devices. When used as a primary concentrator, a CPC can provide significant concentration without the complication of a tracking mechanism and its associated maintenance problems. When used as a secondary, a CPC provides higher total concentration, or for a fixed concentration, tolerates greater tracking error in the primary.
Hull, J.R.
Status Report on REC Verification, Tracking and Associated Issues
REC REC Verification, Tracking Systems and Associated Issues DOE Workshop on REC Markets and Challenges September 11, 2007 Meredith Wingate Director of Clean Energy Policy Design and Implementation Center for Resource Solutions Main Points * Think National - Verification issues are getting more complicated with the intersection of RECs and emissions markets - Market needs more rigorous verification * More coordination is needed Role of Tracking Systems * Primary tool for implementing state RPS programs * Produce data for environmental disclosure programs * Facilitate REC transactions Certificate-based Tracking Programs * ERCOT RECs Program (2001) * NEPOOL GIS (2002) * WI RRC Program (2003-2007) * PJM GATS (2005) * NJ SRECS (2005) * WREGIS (2007) * M-RETS (2007) * New York State (2008?)
Tracking highly maneuverable targets with unknown behavior
for maneuvering target tracking,� IEEE Trans. Aerosp.converted measurements for tracking,� IEEE Trans. Aerosp.particle filters for tracking a maneuvering target,� in
Schell, C; Linder, S P; Zeidler, J R
Tracking multiple mice through severe occlusions
A Mathematical Formulation of Tracking . . . 2.1 De?ning theBased Tracking . . . . . . . . . . . . . . . . . . . . 6.8.2Segmentation . . . . . . . . . Edge-Based Tracking . . . . .
Branson, Kristin
Experiments with Underwater Robot Localization and Tracking
pipeline-, and ?sh tracking,� Journal of Marine Design andRobot Localization and Tracking Peter Corke � , Carrickinvestigation into feature tracking for visual odometry for
Corke, Peter; Detwiler, Carrick; Dunbabin, Matthew; Hamilton, Michael; Rus, Daniela; Vasilescu, Iuliu
Spiral track oven
Final report on development of a continuously operating oven system in which the parts are progressing automatically on a spiral track for in-line service installation for the production of electronic and/or other components to be heat cured or dried.
Drobilisch, Sandor
Storm Tracks and Climate Change
Extratropical and tropical transient storm tracks are investigated from the perspective of feature tracking in the ECHAM5 coupled climate model for the current and a future climate scenario. The atmosphere-only part of the model, forced by ...
Lennart Bengtsson; Kevin I. Hodges; Erich Roeckner
Wind loading on solar concentrators: some general considerations
A survey has been completed to examine the problems and complications arising from wind loading on solar concentrators. Wind loading is site specific and has an important bearing on the design, cost, performance, operation and maintenance, safety, survival, and replacement of solar collecting systems. Emphasis herein is on paraboloidal, two-axis tracking systems. Thermal receiver problems also are discussed. Wind characteristics are discussed from a general point of view; current methods for determining design wind speed are reviewed. Aerodynamic coefficients are defined and illustrative examples are presented. Wind tunnel testing is discussed, and environmental wind tunnels are reviewed; recent results on heliostat arrays are reviewed as well. Aeroelasticity in relation to structural design is discussed briefly. Wind loads, i.e., forces and moments, are proportional to the square of the mean wind velocity. Forces are proportional to the square of concentrator diameter, and moments are proportional to the cube of diameter. Thus, wind loads have an important bearing on size selection from both cost and performance standpoints. It is concluded that sufficient information exists so that reasonably accurate predictions of wind loading are possible for a given paraboloidal concentrator configuration, provided that reliable and relevant wind conditions are specified. Such predictions will be useful to the design engineer and to the systems engineer as well. Information is lacking, however, on wind effects in field arrays of paraboloidal concentrators. Wind tunnel tests have been performed on model heliostat arrays, but there are important aerodynamic differences between heliostats and paraboloidal dishes.
Roschke, E. J.
Helios model for the optical behavior of reflecting solar concentrators
The Helios model simulates the optical behavior of reflecting concentrators. The model follows the incident solar radiation through the system (including the atmosphere) and includes all the factors that influence the optical performance of a collector. An important output is the flux-density pattern (W/cm/sup 2/) at a grid of points on a surface such as the absorbing surface of a receiver and its integral (power in watts) over the surface. The angular distribution of sunrays for the radiation incident on a concentrator is modified by convolution, using the fast Fourier transform, to incorporate the effects of other nondeterministic factors such as sun-tracking errors, surface slope errors, and reflectance properties. The analytical methods used for the statistics, the off-axis reflecting optics, the atmospheric effects, and the various coordinate systems are described and illustrated. This model forms a basis for the simulation code HELIOS as well as for other codes under development. Some of the HELIOS routines are described, a few of its capabilities are discussed and illustrated, and comparisons of data with calculations are presented. These capabilities have been used for performance predictions, safety studies, design trade-offs, data analysis problems, the specification and analysis of concentrator quality, and for the general understanding of solar-concentrator technology.
SOFTWARE QUALITY & SYSTEMS ENGINEERING PROGRAM: Project Tracking...
SOFTWARE QUALITY & SYSTEMS ENGINEERING PROGRAM: Project Tracking Checklist SOFTWARE QUALITY & SYSTEMS ENGINEERING PROGRAM: Project Tracking Checklist The following checklist is...
Technology Tracking Reports - Solid-State Lighting
| Headline News | Tracking Reports | Archived Tracking Reports | Hot Technical Papers | Citation Analysis Method | Credits & Disclaimer | SCIENCE, TECHNOLOGY, BUSINESS AND...
Pennsylvania Source Term Tracking System
The Pennsylvania Source Term Tracking System tabulates surveys received from radioactive waste generators in the Commonwealth of radioactive waste is collected each quarter from generators using the Low-Level Radioactive Waste Management Quarterly Report Form (hereafter called the survey) and then entered into the tracking system data base. This personal computer-based tracking system can generate 12 types of tracking reports. The first four sections of this reference manual supply complete instructions for installing and setting up the tracking system on a PC. Section 5 presents instructions for entering quarterly survey data, and Section 6 discusses generating reports. The appendix includes samples of each report.
Minimum-mirror-area single-stage solar concentrators
A means of generating a comcentrating mirror of minimum size for a given average flux-concentration output is outlined. The method is useful for acceptance angles typical of those required for tilting and tracking solar concentrators and can result in substantial cost savings when expensive mirrors (i.e.,glass) are used. Comparisons are made with compound parabolic concentrators.
Mills, D.; Harting, E.; Giutronich, J.E.; Cellich, W.; Morton, A.; Walker, I.
Microsoft Word - Tracking Call _2_.doc
Tracking Sub-Group Call, Monday December 12, 2005, 11 a.m. eastern Tracking Sub-Group Call, Monday December 12, 2005, 11 a.m. eastern Participants: Bill Mackie (WGA), Sarah Wochos (CSG-MW), Michele Sampson (FRA) Participants discussed information to add to the group's working document and next steps for the discussion. It was mentioned that RW recently announced that the rail spur in Nevada would cost much more than originally planned, so the possibility of heavy-hauling is likely, at least initially until the spur is completed. In light of that, we need to consider technologies and policies for both truck and rail and for inter-modal transfers. People/sources to contact for lessons-learned and/or available technologies Bob Fronczak at AAR - as a starting point to involving the railroads. AAR likely has access to
Linear Concentrator Systems | Open Energy Information
Open Energy Info (EERE)
Linear Concentrator Systems Linear Concentrator Systems Jump to: navigation, search Introduction Linear concentrating collector fields consist of a large number of collectors in parallel rows that are typically aligned in a north-south orientation to maximize both annual and summertime energy collection. With a single-axis sun-tracking system, this configuration enables the mirrors to track the sun from east to west during the day, ensuring that the sun reflects continuously onto the receiver tubes. Parabolic Trough Systems The predominant CSP systems currently in operation in the United States are linear concentrators using parabolic trough collectors. In such a system, the receiver tube is positioned along the focal line of each parabola-shaped reflector. The tube is fixed to the mirror structure and
Western North Pacific Typhoons with Concentric Eyewalls
This study examines the intensity change and moat dynamics of typhoons with concentric eyewalls using passive microwave data and best-track data in the western North Pacific between 1997 and 2006. Of the 225 typhoons examined, 55 typhoons and 62 ...
Hung-Chi Kuo; Chih-Pei Chang; Yi-Ting Yang; Hau-Jang Jiang
Autonomous Path Tracking of a Kinematic Airship in Presence of Unknown Gust
The trajectory tracking problem of autonomous lighter than air vehicles in the presence of wind gusts is studied in this paper. The airship is represented as one point which is its center of volume, and only the kinematic equations are considered for ... Keywords: Airship, Gusts, Kinematic model, Lyapunov approach, Trajectory tracking
Elie Kahale; Pedro Castillo Garcia; Yasmina Bestaoui
Endoscopic Feature Tracking and Scale-Invariant Estimation of Soft-Tissue Structures
In this study, we introduce a software pipeline to track feature points across endoscopic video frames. It deals with the common problems of low contrast and uneven illumination that afflict endoscopic imaging. In particular, irregular feature trajectories ... Keywords: endoscopy, factorization method, feature tracking
Chia-Hsiang Wu; Yung-Nien Sun; Yi-Chiao Chen; Chien-Chen Chang
Concentrating Solar Power Program overview
Over the last decade, the US solar thermal industry has established a track record in the power industry by building and operating utility-scale power plants with a combined rated capacity of 354 megawatts (MW). The technology used in these power plants is based on years of research and development (R and D), much of it sponsored by the US Department of Energy (DOE). DOE`s Concentrating Solar Power (CSP) Program is collaborating with its partners in the private sector to develop two new solar technologies -- power towers and dish/engines -- to meet the huge commercial potential for solar power.
REC Tracking Systems Design Guide
OAK-B135 The Design Guide is presented in three parts. Section II describes the need for REC tracking, the two principal tracking methods available, and, in simple terms, the operation of certificate-based systems. Section III presents the major issues in the design of certificate-based tracking systems and discusses the advantages and disadvantages of alternative solutions. Finally, Section IV offers design principles or recommendations for most of these issues.
Meredith Wingate
Fast Track Special Project Proposal
A fast track special project is defined as a one-time Division directed endeavor that creates ... project will not result in future operating expenses. ... Cost Analysis
TREC 2004 Terabyte Track Guidelines
... This year's track will use a collection of Web data crawled from Web sites in the .gov domain during early ... White space is used to separate columns. ...
Tracking the Intractability of Melanomas
Tracking the Intractability of Melanomas Important new information about the way melanoma cancer cells fight for their lives has been uncovered by researchers from the National...
nuclear energy legislation on track
07/8 - NUCLEAR ENERGY LEGISLATION ON TRACK ... the safety and economic viability of nuclear power, the management of nuclear waste, the advancement�...
Trajectory-Tracking Scheme in Lagrangian Form for Solving Linear Advection Problems: Preliminary Tests
A Lagrangian linear advection scheme, which is called the trajectory-tracking scheme, is proposed in this paper. The continuous tracer field has been discretized as finite tracer parcels that are points moving with the velocity field. By using the ...
Li Dong; Bin Wang
Electromagnetic-Guided Dynamic Multileaf Collimator Tracking Enables Motion Management for Intensity-Modulated Arc Therapy
Purpose: Intensity-modulated arc therapy (IMAT) is attractive because of high-dose conformality and efficient delivery. However, managing intrafraction motion is challenging for IMAT. The purpose of this research was to develop and investigate electromagnetically guided dynamic multileaf collimator (DMLC) tracking as an enabling technology to treat moving targets during IMAT. Methods and Materials: A real-time three-dimensional DMLC-based target tracking system was developed and integrated with a linear accelerator. The DMLC tracking software inputs a real-time electromagnetically measured target position and the IMAT plan, and dynamically creates new leaf positions directed at the moving target. Low- and high-modulation IMAT plans were created for lung and prostate cancer cases. The IMAT plans were delivered to a three-axis motion platform programmed with measured patient motion. Dosimetric measurements were acquired by placing an ion chamber array on the moving platform. Measurements were acquired with tracking, without tracking (current clinical practice), and with the phantom in a static position (reference). Analysis of dose distribution differences from the static reference used a {gamma}-test. Results: On average, 1.6% of dose points for the lung plans and 1.2% of points for the prostate plans failed the 3-mm/3% {gamma}-test with tracking; without tracking, 34% and 14% (respectively) of points failed the {gamma}-test. The delivery time was the same with and without tracking. Conclusions: Electromagnetic-guided DMLC target tracking with IMAT has been investigated for the first time. Dose distributions to moving targets with DMLC tracking were significantly superior to those without tracking. There was no loss of treatment efficiency with DMLC tracking.
Keall, Paul J., E-mail: email@example.com [Department of Radiation Oncology, Stanford University, Stanford, CA (United States); Sawant, Amit; Cho, Byungchul; Ruan, Dan; Wu Junqing; Poulsen, Per [Department of Radiation Oncology, Stanford University, Stanford, CA (United States); Petersen, Jay; Newell, Laurence J. [Calypso Medical Technologies, Seattle, WA (United States); Cattell, Herbert [Varian Medical Systems, Palo Alto, CA (United States); Korreman, Stine [Rigshospitalet, University of Copenhagen, Copenhagen (Denmark); Department of Human Oncology, University of Wisconsin-Madison, Madison, WI (United States)
A front-tracking method for computation of interfacial flows with soluble surfactants
A finite-difference/front-tracking method is developed for computations of interfacial flows with soluble surfactants. The method is designed to solve the evolution equations of the interfacial and bulk surfactant concentrations together with the incompressible ... Keywords: Buoyancy-driven flow, Drop cleavage, Front-tracking method, Soluble surfactant
Metin Muradoglu; Gretar Tryggvason
Production of fullerenes using concentrated solar flux
A method of producing soot containing high amounts of fullerenes comprising: providing a primary concentrator capable of impingement of a concentrated beam of sunlight onto a carbon source to cause vaporization of carbon and subsequent formation of fullerenes, or providing a solar furnace having a primary concentrator with a focal point that concentrates a solar beam of sunlight; providing a reflective secondary concentrator having an entrance aperture and an exit aperture at the focal point of the solar furnace; providing a carbon source at the exit aperture of the secondary concentrator; supplying an inert gas over the carbon source to keep the secondary concentrator free from vaporized carbon; and impinging a concentrated beam of sunlight from the secondary concentrator on the carbon source to vaporize the carbon source into a soot containing high amounts of fullerenes.
Fields, Clark L. (Greeley, CO); Pitts, John Roland (Lakewood, CO); King, David E. (Lakewood, CO); Hale, Mary Jane (Golden, CO); Bingham, Carl E. (Denver, CO); Lewandowski, Allan A. (Evergreen, CO)
Biologically plausible algorithms for motion saliency and tracking
Tracking . . . . . . . . . . . . . . . . . . . . . . . . . .5.3.6 Scale Adaptive Tracking . . . . . . . . . . 5.3.7Experiment1: Saliency affects tracking performance . . . . .
Mahadevan, Vijay
The Hanford Federal Facility Agreement and Consent Order, known as the ''Tri-Party Agreement'' (TPA), is a legally binding agreement among the US Department of Energy (DOE), The Washington State Department of Ecology, and the US Environmental Protection Agency (EPA) for cleaning up the Hanford Site. Established in the 1940s to produce material for nuclear weapons as part of the Manhattan Project, Hanford is often referred to as the world's large environmental cleanup project. The Site covers more than 580 square miles in a relatively remote region of southeastern Washington state in the US. The production of nuclear materials at Hanford has left a legacy of tremendous proportions in terms of hazardous and radioactive waste. From a waste-management point of view, the task is enormous: 1700 waste sites; 450 billion gallons of liquid waste; 70 billion gallons of contaminated groundwater; 53 million gallons of tank waste; 9 reactors; 5 million cubic yards of contaminated soil; 22 thousand drums of mixed waste; 2.3 tons of spent nuclear fuel; and 17.8 metric tons of plutonium-bearing material and this is just a partial listing. The agreement requires that DOE provide the results of analytical laboratory and non-laboratory tests/readings to the lead regulatory agency to help guide then in making decisions. The agreement also calls for each signatory to preserve--for at least ten years after the Agreement has ended--all of the records in it, or its contractors, possession related to sampling, analysis, investigations, and monitoring conducted. The Action Plan that supports the TPA requires that Ecology and EPA have access to all data that is relevant to work performed, or to be performed, under the Agreement. Further, the Action Plan specifies two additional requirements: (1) that EPA, Ecology and their respective contractor staffs have access to all the information electronically, and (2) that the databases are accessible to, and used by, all personnel doing TPA-related work. The Hanford Environmental Databases document and track the progress of Site cleanup--Hanford Environmental Information System (HEIS), Hanford Well Information Data System (HWIS), the Waste Information Data System (WIDS), and the Hanford Geographic Information System (HGIS). HEIS contains the date, time, location, and results from samples taken during activities such as field investigations and groundwater monitoring. HWIS contains the details of the wells and boreholes on the Site. WIDS tracks the waste sites--from discovery through cleanup. Each of the databases is supported by several applications for entering or retrieving information. HGIS keeps track of the locations for waste (WIDS) sites, wells and boreholes, and other sampling site locations. Of the applications used to extract data from the Environmental Databases, the Hanford Map Portal (QMAP) is the newest, and perhaps the most efficient. QMAP combines the HGIS spatial information with the information from the other databases so that users may browse to, or query, the waste site or well of interest. A query of a waste site or well engages QMAP to find the object and then the user may access the appropriate database. This paper describes the Environmental Databases and their maintenance, as well as the applications used to access them. Collectively, these databases are a critical element in formally documenting the work and associated decisions made during the cleanup of Hanford.
PIA - HS Correspondence Tracking System (HSCT) | Department of...
Correspondence Tracking System (HSCT) PIA - HS Correspondence Tracking System (HSCT) PIA - HS Correspondence Tracking System (HSCT) PIA - HS Correspondence Tracking System (HSCT)...
PIA - Security Clearance Tracking System | Department of Energy
Security Clearance Tracking System PIA - Security Clearance Tracking System PIA - Security Clearance Tracking System PIA - Security Clearance Tracking System More Documents &...
Tracking defect warnings across versions
Various static analysis tools will analyze a software artifact in order to identify potential defects, such as misused APIs, race conditions and deadlocks, and security vulnerabilities. For a number of reasons, it is important to be able to track the ... Keywords: FindBugs, Java, bug histories, bug tracking, static analysis
Jaime Spacco; David Hovemeyer; William Pugh
The TREC question answering track
The Text REtrieval Conference (TREC) question answering track is an effort to bring the benefits of large-scale evaluation to bear on a question answering (QA) task. The track has run twice so far, first in TREC-8 and again in TREC-9. In each case, the ...
Ellen M. Voorhees
Retrieval of volcanic ash and ice cloud physical properties together with gas concentration from IASI measurements using the AVL model
Observation and tracking of volcanic aerosols are important for preventing possible aviation hazards and determining the influence of aerosols on climate. The useful information primary includes the concentration
Fringe tracking and spatial filtering: phase jumps and dropouts
Fringe tracking in interferometers is typically analyzed with the implicit assumption that there is a single phase associated with each telescope in the array. If the telescopes have apertures significantly larger than r0 and only partial adaptive optics correction, then the phase measured by a fringe sensor may differ significantly from the "piston" component of the aperture phase. In some cases, speckle noise will cause "branch points" in the measured phase as a function of time, causing large and sudden jumps in the phase. We present simulations showing these effects in order to understand their implications for the design of fringe tracking algorithms.
David F. Buscher; John S. Young; Fabien Baron; Christopher A. Haniff
Design of photovoltaic central power station concentrator array
A design for a photovoltaic central power station using tracking concentrators has been developed. The 100 MW plant is assumed to be located adjacent to the Saguaro Power Station of Arizona Public Service. The design assumes an advanced Martin Marietta two-axis tracking fresnel lens concentrator. The concentrators are arrayed in 5 MW subfields, each with its own power conditioning unit. The photovoltaic plant output is connected to the existing 115 kV switchyard. The site specific design allows detailed cost estimates for engineering, site preparation, and installation. Collector and power conditioning costs have been treated parametrically.
Robust Multiple Car Tracking With Occlusion Reasoning
BERKELEY Robust Multiple Car Tracking with OcclusionAND HIGHWAYS Robust Multiple Car Tracking with Occlusiondraws decisions like "stalled car in lane 2 detected", "high
Koler, Dieter; Weber, Joseph; Malik, Jitendra
High resolution track etch autoradiography
A detector assembly is disclosed for use in obtaining alpha-track autoradiographs, the detector assembly including a substantially boron-free substrate; a detector layer deposited on the substantially boron-free substrate, the detector layer being capable of recording alpha particle tracks and exhibiting evidence of the alpha tracks in response to being exposed to an etchant, the detector layer being less than about 2 microns thick; and a protective layer deposited on the detector layer, the protective layer being resistant to the etchant and having a thickness of about 0.5 to 1 microns. 13 figures.
Solares, G.; Zamenhof, R.G.
The Automatic Library Tracking Database
A library tracking database has been developed and put into production at the National Institute for Computational Sciences and the Oak Ridge Leadership Computing Facility (both located at Oak Ridge National Laboratory.) The purpose of the library tracking database is to track which libraries are used at link time on Cray XT5 Supercomputers. The database stores the libraries used at link time and also records the executables run in a batch job. With this data, many operationally important questions can be answered such as which libraries are most frequently used and which users are using deprecated libraries or applications. The infrastructure design and reporting mechanisms are presented along with collected production data.
Fahey, Mark R [ORNL; Jones, Nicholas A [ORNL; Hadri, Bilel [ORNL
A detector assembly for use in obtaining alpha-track autoradiographs, the detector assembly including a substantially boron-free substrate; a detector layer deposited on the substantially boron-free substrate, the detector layer being capable of recording alpha particle tracks and exhibiting evidence of the alpha tracks in response to being exposed to an etchant, the detector layer being less than about 2 microns thick; and a protective layer deposited on the detector layer, the protective layer being resistant to the etchant and having a thickness of about 0.5 to 1 microns.
Solares, Guido (Arlington, MA); Zamenhof, Robert G. (Brookline, MA)
The Qweak tracking system
The Q{sub weak}{sup p} experiment will measure the parity-violating elastic e-p scattering asymmetry to extract the weak charge of the proton. The experiment employs a toroidal magnet to focus electrons scattered at 8{sup o} {+-} 2{sup o}, corresponding to Q{sup 2} {approx} 0.03 (GeV/c){sup 2}, on eight Cerenkov detectors located in the focal plane of the spectrometer. Since the asymmetry is proportional to Q{sup 2}, it is crucial to obtain an accurate measure of the acceptance-averaged value of Q{sup 2}. A tracking system will be used in a low-rate counting mode, allowing individual events to be observed. This will enable a determination of the average Q{sup 2} by measuring the scattering angle and interaction vertex, for mapping the response across the surface of the Cerenkov detectors, and for the dilution of the Cerenkov detector signal by background.
K.H. Grimm; Qweak Collaboration
Design of the support structure, drive pedestal, and controls for a solar concentrator
The glass/metal McDonnell-Douglas dish is the state-of-the-art of parabolic dish concentrators. Because of the perceived high production cost of this concentrator, the Department of Energy's Solar Thermal Program is developing stretch-membrane technology for large (75 kWt) solar concentrators for integration with receivers and engines in 25 kWe dish-Stirling systems. The objective of this development effort is to reduce the cost of the concentrator while maintaining the high levels of performance characteristic of glass-metal dishes. Under contract to Sandia National Laboratories, Science Applications International Corporation, Solar Kinetics Inc. and WG Associates are developing a faceted stretched-membrane heliostat technology. This design will result in a low-risk, near-term concentrator for dish-Stirling systems. WG Associates has designed the support structure, drives and tracking controls for this dish. The structure is configured to support 12 stretched-membrane, 3.5-meter diameter facets in a shaped dish configuration. The dish design is sized to power a dish-Stirling system capable of producing 25 kW (electric). In the design of the structure, trade-off studies were conducted to determine the best'' facet arrangement, dish contour, dish focal length, tracking control and walk-off protection. As part of the design, in-depth analyses were performed to evaluate pointing accuracy, compliance with AISC steel design codes, and the economics of fabrication and installation. Detailed fabrication and installation drawings were produced, and initial production cost estimates for the dish were developed. These issues, and the final dish design, are presented in this report. 7 refs., 33 figs., 18 tabs.
Goldberg, V.R.; Ford, J.L.; Anderson, A.E. (WG Associates, Dallas, TX (United States))
Automatic Library Tracking Database Infrastructure
Libraries » ALTD Libraries » ALTD ALTD Automatic Library Tracking Database Infrastructure To track and monitor library usage and better serve your software needs, we have enabled the Automatic Library Tracking Database (ALTD) on our prodcution systems, Hopper and Edison. ALTD is also availailable on Carver, but has not enabled for all users by default yet. ALTD, developed by National Institute for Computational Sciences, automatically and transparently tracks all libraries linked into an application at compile time, as well as the libraries used at run time, by intercepting the linker (ld) and the job launcher (aprun, or mpirun). It is a light-weight tool, and should not change your experience with compilation and execution of codes on the machine. However, if you encounter any problems due to ALTD,
Radiological Source Registry and Tracking
Radiological Source Registry and Tracking (RSRT) Radiological Source Registry and Tracking (RSRT) Home HSS Logo Radiological Source Registry and Tracking (RSRT) Department of Energy (DOE) Notice N 234.1 Reporting of Radioactive Sealed Sources has been superseded by DOE Order O 231.1B Environment, Safety and Health Reporting. O 231.1B identifies the requirements for centralized inventory and transaction reporting for radioactive sealed sources. Each DOE site/facility operator that owns, possesses, uses or maintains in custody those accountable radioactive sealed sources identified in Title 10 Code of Federal Regulation Part 835, Occupational Radiation Protection (10 CFR 835), Appendix E, and International Atomic Energy Agency (IAEA) Categories 1 and 2 radioactive sealed sources identified in Attachment 5, Appendix A of O 321.1B, will submit information to the DOE Radiological Source Registry and Tracking (RSRT) System.
Poleward Deflection of Storm Tracks
An analysis of 11 years of European Centre for Medium-Range Weather Forecasts data focuses primarily on the vertically averaged high-frequency transients. The conclusions are discussed in the context of (a) the winter storm track, (b) monthly ...
Isidoro Orlanski
Drizzle Suppression in Ship Tracks
Although drizzle was a relatively infrequent occurrence during the Monterey Area Ship Track study, diverse measurements from several sources produced data signals consistent with a reduction in drizzle drops in stratus clouds affected by ship ...
Ronald J. Ferek; Timothy Garrett; Peter V. Hobbs; Scott Strader; Doug Johnson; Jonathan P. Taylor; Kurt Nielsen; Andrew S. Ackerman; Yefim Kogan; Qingfu Liu; Bruce A. Albrecht; David Babb
Solar Magnetic Feature Detection and Tracking for Space Weather Monitoring
We present an automated system for detecting, tracking, and cataloging emerging active regions throughout their evolution and decay using SOHO Michelson Doppler Interferometer (MDI) magnetograms. The SolarMonitor Active Region Tracking (SMART) algorithm relies on consecutive image differencing to remove both quiet-Sun and transient magnetic features, and region-growing techniques to group flux concentrations into classifiable features. We determine magnetic properties such as region size, total flux, flux imbalance, flux emergence rate, Schrijver's R-value, R* (a modified version of R), and Falconer's measurement of non-potentiality. A persistence algorithm is used to associate developed active regions with emerging flux regions in previous measurements, and to track regions beyond the limb through multiple solar rotations. We find that the total number and area of magnetic regions on disk vary with the sunspot cycle. While sunspot numbers are a proxy to the solar magnetic field, SMART offers a direct diagnos...
Higgins, Paul A; McAteer, R T James; Bloomfield, D Shaun; 10.1016/j.asr.2010.06.024
Concentrating Solar Power Forum Concentrating Photovoltaics (Presentation)
This presentation's summaries: a convenient truth, comparison of three concentrator technologies, value of high efficiency, and status of industry.
Kurtz, S.
Energy Basics: Linear Concentrator Systems for Concentrating...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Energy Basics Renewable Energy Printable Version Share this resource Biomass Geothermal Hydrogen Hydropower Ocean Solar Photovoltaics Concentrating Solar Power Linear...
Towards front-tracking based on conservation in two space dimensions III, tracking interfaces
This is the third paper in the series of our conservative front-tracking method. In this paper, we describe how our method tracks fluid interfaces in multi-fluid flows. Two important ingredients in our conservative front-tracking method in tracking fluid ... Keywords: Conservative front-tracking, Fluid interface, Numerical surface dissipation, Velocity and pressure equilibrium
Mohammed Aman Ullah, Wenbin Gao, De-Kang Mao
Cooperative Modeling and Design History Tracking Using Design Tracking Matrix
This thesis suggests a new framework for cooperative modeling which supports concurrency design protocol with a design history tracking function. The proposed framework allows designers to work together while eliminating design conflicts and redundancies, and preventing infeasible designs. This framework provides methods to track optimal design path and redundant design history in the overall design process. This cooperative modeling architecture consists of a modeling server and voxel-based multi-client design tool. Design change among server and multiple clients are executed using the proposed concurrency design protocol. The design steps are tracked and analyzed using Design Tracking Graph and Design Tracking Matrix (DTM), which provide a design data exchange algorithm allowing seamless integration of design modifications between participating designers. This framework can be used for effective cooperative modeling, and helps identify and eliminate conflicts and minimize delay. The proposed algorithm supports effective cooperative design functions. First, it provides a method to obtain the optimal design path which can be stored in a design library and utilized in the future design. Second, it helps capture modeling pattern which can be used for analyzing designer's performance. Finally, obtained redundancies can be used to evaluate designer?s design efficiency.
Kim, Jonghyun
Installation package for concentrating solar collector panels
Northrup, Inc., has developed and delivered 300 square feet of Concentrating Solar Collector (ML Series) and Attitude Control System, under the direction of the National Aeronautics and Space Administration. The ''ML Series'' Solar Collector Panels comprise a complete package array consisting of collector panels using modified Fresnel Prismatic Lenses for a 10 to 1 concentrating ration, supporting framework, fluid manifolding and tracking drive system, in unassembled components for field erection. The Installation, Operation and Maintenance Manual, Warranty, List of Materials, Sub-Assembly drawings and Final Field Assembly Drawings are included in the package.
Design package for concentrating solar collector panels
Information used to evaluate the design of the Northrup concentrating collector is presented. Included are the system performance specifications, the applications manual, and the detailed design drawings of the collector. The Northrup concentrating solar collector is a water/glycol/working fluid type, dipped galvanized steel housing, transparent acrylic Fresnel lens cover, copper absorber tube, fiber glass insulation and weighs 98 pounds. The gross collector area is about 29.4/sup 2/ per collector. A collector assembly includes four collector units within a tracking mount array.
Spatial filter performance on point-target detection in various clutter conditions using visible images
For a search-and-track system, detection of point targets in clutter is a challenge because spatial noise in an image can be much greater than temporal noise. Suppression of clutter uses a spatial filter matched to the ...
Hwang, Susan, M. Eng. Massachusetts Institute of Technology
Advanced evacuated tubular concentrator research
Previous research projects led to the conceptual development and proof-of-concept of an advanced evacuated concentrating solar collector tube. The basic idea involves the integration of a nonimaging Compound Parabolic Concentrator (CPC) inside an evacuated tube and coupled to a spectrally selective absorber. An experimental panel of these tubes achieved the highest operating efficiency at high temperatures ever measured with a non-tracking stationary solar collector. Subsequent studies have indicated that a mass-producible collector, incorporating the same concepts, can be developed which will deliver excellent performance across a broad range of temperatures, extending from about 50{degrees}C (suitable for domestic hot water and space heating) to well above 200{degrees}C (suitable for space cooling, process steam and many other end uses). Some form of advanced Integrated CPC (ICPC) remains the only simple and effective method for delivering solar thermal energy efficiently throughout the temperature range from 50{degrees}C to about 300{degrees}C without tracking. It has the potential to make practical and economical several cooling technologies which are otherwise not viable. In addition to its potential for driving cooling systems, this technology also provides a highly versatile solar source for virtually all thermal end uses including general purpose space and domestic hot water heating as well as industrial process heat. Research efforts have been directed towards designing and prototyping a manufacturable version of such a collector tube. We have been pursuing several paths. These include: (1) a small tube version, 52mm in diameter, based on the use of the T-17 commercially produced fluorescent glass tubing, which is the largest size lamp tubing produced in high volume in the United States, and (2) a large tube version, 125mm in diameter, compatible with the commercial design manufactured until recently by Corning France (the CORTEC collector).
Winston, R.; O'Gallagher, J.J.
Presented at Solar World Congress, Beijing, September 18 22 2007 PARABOLOIDAL DISH SOLAR CONCENTRATORS FOR MULTI-MEGAWATT
the standard turbine / generator technology. Trough concentrators use parabolic trough mirrors to produce of magnitude lower. Concentrating Solar Power systems via trough systems, have a strong track record, with 354 a linear focus on a receiver that moves with the trough as it tracks the sun, Linear Fresnel systems use
Tracking features and exploring their temporal dynamics can aid scientists in identifying interesting time intervals in a simulation and serve as basis for performing quantitative analyses of temporal phenomena. In this paper, we develop a novel approach for tracking subsets of isosurfaces, such as burning regions in simulated flames, which are defined as areas of high fuel consumption on a temperature isosurface. Tracking such regions as they merge and split over time can provide important insights into the impact of turbulence on the combustion process. However, the convoluted nature of the temperature isosurface and its rapid movement make this analysis particularly challenging. Our approach tracks burning regions by extracting a temperature isovolume from the four-dimensional space-time temperature field. It then obtains isosurfaces for the original simulation time steps and labels individual connected 'burning' regions based on the local fuel consumption value. Based on this information, a boundary surface between burning and non-burning regions is constructed. The Reeb graph of this boundary surface is the tracking graph for burning regions.
Weber, Gunther H.; Bremer, Peer-Timo; Day, Marcus S.; Bell, John B.; Pascucci, Valerio
Appendix B - Control Points
B B Control Points B.1 Injector Control Points Qty Type Device 2 Magnet Bend magnet - DL1 bend 9 Magnet Quad magnet 10 Magnet X-Y Corrector Pair 2 Magnet Solenoid 2 Magnet...
Two-Way Particle-Tracking Model for Specifying Sources of Drifting Objects: Application to the East China Sea Shelf
The two-way Lagrangian particle-tracking model (PTM) is proposed for specifying sources of objects drifting with random-walk processes on the sea surface. First, to determine object source candidates, modeled particles are released from the point ...
Atsuhiko Isobe; Shin�ichiro Kako; Pil-Hun Chang; Takeshi Matsuno
Bar-code automated waste tracking system
The Bar-Code Automated Waste Tracking System was designed to be a site-Specific program with a general purpose application for transportability to other facilities. The system is user-friendly, totally automated, and incorporates the use of a drive-up window that is close to the areas dealing in container preparation, delivery, pickup, and disposal. The system features ``stop-and-go`` operation rather than a long, tedious, error-prone manual entry. The system is designed for automation but allows operators to concentrate on proper handling of waste while maintaining manual entry of data as a backup. A large wall plaque filled with bar-code labels is used to input specific details about any movement of waste.
Hull, T.E.
Semantic point detector
Local features are the building blocks of many visual systems, and local point detector is usually the first component for local feature extraction. Existing local point detector are designed with target for matching and it may not perform well when ... Keywords: semantic point detector
Kuiyuan Yang; Lei Zhang; Meng Wang; Hong-Jiang Zhang
melting point. By analogy, hydrogen permeation measurementsin silicon suggest that the hydrogen solubility also is notNo. 1, February 1982 HYDROGEN CONCENTRATION AND DISTRIBUTION
Hansen, W.L.
Atmospheric CH4 Concentrations from the CSIRO GASLAB Flask Sampling...
CH4 Concentrations from the CSIRO GASLAB Flask Sampling Network image Alert, NWT, Canada Cape Ferguson, Australia Cape Grim, Australia Estevan Point, BC, Canada Macquarie...
Development of Non?Tracking Solar Thermal Technology
The aims of this research is to develop high temperature solar thermal collectors that do not require complex solar tracking devices to maintain optimal performance. The collector technology developed through these efforts uses non?imaging optics and is referred to as an external compound parabolic concentrator. It is able to operate with a solar thermal efficiency of approximately 50% at a temperature of 200?�?C and can be readily manufactured at a cost between $15 and $18 per square foot.
Concentrating Photovoltaics (Presentation)
Solar is growing rapidly, and the concentrating photovoltaics industry-both high- and low-concentration cell approaches-may be ready to ramp production in 2009.
Response Tracking Number: 1
The significance of vadose-zone biodegradation on the vapor intrusion of petroleum compounds is well recognized, but considered to a limited extent in the guidance document. Although exceptions can occur, the likelihood that dissolved hydrocarbons in groundwater will cause impacts to indoor air is remote. It is more reasonable to focus screening efforts on hydrocarbon release sites with i) shallow NAPL present below the building, ii) direct contact of dissolved hydrocarbons on the building, or iii) migration of petroleum vapors through preferential pathways in contact with contamination. Studies have demonstrated that vadose-zone aerobic biodegradation of petroleum hydrocarbons is common and significant (Roggemans et al., 2001). The USEPA vapor intrusion database and industry experience both indicate that dissolved petroleum hydrocarbons in groundwater do not cause vapor intrusion impacts. Provided no preferential pathways are present, the potential for biodegradation is increased at sites with low hydrocarbon concentration, large depth to source, relatively permeable soils, and no capping effect (e.g., low permeability surface soil or cover that would limit transport of O2 into the subsurface) (Health Canada, 2004). Hence, Health Canada is currently considering a provision to allow for a 10x adjustment in the attenuation factor to account for biodegradation at sites with no surface cap and large depths to source. Modeling and site investigation studies demonstrate that biodegradation can result in many orders of magnitude reduction in vapor intrusion risk estimates (Abreu and Johnson, 2005b; Ettinger
Commenter Organization
PowerPoint Presentation
TWP TWP Storm Types TWP Storm Types Fig. 1. ARM TWP sites experience different convective clouds within the TWP: (1) ITCZ, (2) SPCZ, (3) Island convection, and (4) Coastal convection. ARM sites: D = Darwin, M = Manus, N = Nauru). Plot color scheme: yellow is cold, blue is warm. 1 2 3 4 M M N N D D 6 December, 2005, 5:30 GMT 6 December, 2005, 5:30 GMT 1. OVERVIEW 1. OVERVIEW A. Previous Work A. Previous Work Tracked clouds with geostationary satellite data to determine the context of the cloud state observed at the ARM Sites, such as the cloud's life-cycle stage and its representativeness of the region. B. Goal B. Goal Expanding classification system for: * Cloud regime classification * Convective regime classification * Subsequent tracking of features' paths and
Employee Concerns Tracking System, PIA, Bechtel Jacobs Company...
Concerns Tracking System, PIA, Bechtel Jacobs Company, LLC Employee Concerns Tracking System, PIA, Bechtel Jacobs Company, LLC Employee Concerns Tracking System, PIA, Bechtel...
PIA - Foreign Access Central Tracking System (FACTS) | Department...
Access Central Tracking System (FACTS) PIA - Foreign Access Central Tracking System (FACTS) PIA - Foreign Access Central Tracking System (FACTS) PIA - Foreign Access Central...
PIA - Energy Inspector General Project Tracking System (EIGPT...
Inspector General Project Tracking System (EIGPT) PIA - Energy Inspector General Project Tracking System (EIGPT) PIA - Energy Inspector General Project Tracking System (EIGPT) PIA...
Particle Tracking and Simulation on the .NET Framework
to EPAC 2006 PARTICLE TRACKING AND SIMULATION ON THE .NET94720, USA Abstract Particle tracking and simulation studieswas measured using three tracking programs on a simplified
Nishimura, Hiroshi; Scarvie, Tom
Tracking and analysis of C. elegans behavior using machine vision
and W.R. Schafer, Automatic tracking, feature extraction andapproach to segmenting and tracking people in a clutteredbased particle filtering for tracking a variable number of
Huang, Kuang Man
Extracting longitudinal shower development information from crystal calorimetry plus tracking
crystal calorimetry plus tracking D.N. Brown a , J. Ilic b ,calorimeter by using tracking information. Ourgood three- dimensional tracking resolution of B A B AR ,
Brown, D.N.
PIA - Correspondence and Action Tracking System (CATS) | Department...
Correspondence and Action Tracking System (CATS) PIA - Correspondence and Action Tracking System (CATS) PIA - Correspondence and Action Tracking System (CATS) PIA - Correspondence...
Fiber Tracking Cylinder Nesting
The fiber tracker consists of 8 concentric carbon fiber cylinders of varying diameters, from 399mm to 1032.2mm and two different lengths. 1.66 and 2.52 meters. Each completed cylinder is covered over the entire o.d. with scintillating fiber ribbons with a connector on each ribbon. These ribbons are axial (parallel to the beam line) at one end and stereo (at 3 deg. to the beam line) at the other. The ribbon connectors have dowel pins which are used to match with the connectors on the wave guide ribbons. These dowel pins are also used during the nesting operation, locating and positioning measurements. The nesting operation is the insertion of one cylinder into another, aligning them with one another and fastening them together into a homogeneous assembly. For ease of assembly. the nesting operation is accomplished working from largest diameter to smallest. Although the completed assembly of all 8 cylinders glued and bolted together is very stiff. individual cylinders are relatively flexible. Therefore. during this operation, No.8 must be supported in a manner which maintains its integrity and yet allows the insertion of No.7. This is accomplished by essentially building a set of dummy end plates which replicate a No.9 cylinder. These end plates are mounted on a wheeled cart that becomes the nesting cart. Provisions for a protective cover fastened to these rings has been made and will be incorporated in finished product. These covers can be easily removed for access to No.8 and/or the connection of No.8 to No.9. Another wheeled cart, transfer cart, is used to push a completed cylinder into the cylinder(s) already mounted in the nesting cart.
Stredde, H.; /Fermilab
INSTRUMENTS-METHODS-36 Revision of the ALICE TRD tracking code
The algorithm for tracking is the backbone of the reconstruction procedure of the TRD detector of the ALICE experiment at LHC at CERN. Its performance has immediate influence on other reconstruction tasks such as calibration, alignment and particle identification. The tracking algorithm is designed to work with or with-where xc, yc and zc are the coordinates of the cluster; x0, y0, dy/dx, z0 and dz/dx are the initial parameters of the tracklet and h is the tangent of the tilting angle. A similar least mean square fit is applied also on the XZ plane. The fit results, yfit and zfit, together with their covariance matrix, are used for track prolongation and update. out prior estimate of the track position. Thus one can distinguish two main applications: the Stand Alone Tracking Stand Alone Tracking (SAT) used in the High Level Trigger (HLT) system of AL-ICE or to analyze test beam or cosmic rays data and the In the SAT application the Riemann parametrization Standard Tracking (ST) used to reconstruct physics events in the ALICE offline framework. (x ? x0) 2 + (y ? y0) 2 = R (2) Standard Tracking The offline tracking is based on Kalman Filtering (KF) of the data [2]. In the case of TRD, due to the measurement procedure of the charge deposit, clusters � charge and position are correlated over a temporal range of approx 300ns. Therefore a new approach has to be searched to fulfill the assumption of independence between updating points of the KF based on:- linear fit of clusters positions in one TRD detector;- propagate/update track parameters using the fit result. A tracklet is a linear fit of the clusters attached to one track in one TRD detector (see Fig. 1).
A. Bercuci; M. Fasel; M. Ivanov
Tracking dynamic regions of texture and shape
The tracking of visual phenomena is a problem of fundamental importance in computer vision. Tracks are used in many contexts, including object recognition, classification, camera calibration, and scene understanding. ...
Migdal, Joshua N. (Joshua Nicholas), 1979-
Climate Modulation of North Atlantic Hurricane Tracks
The variability of North Atlantic tropical storm and hurricane tracks, and its relationship to climate variability, is explored. Tracks from the North Atlantic hurricane database for the period 1950�2007 are objectively separated into four groups ...
James P. Kossin; Suzana J. Camargo; Matthew Sitkowski
On target tracking with binary proximity sensors
We consider the use of binary proximity sensors for tracking targets. Such sensors provide only 1-bit information regarding a target's presence or absence in their vicinity, albeit with less than 100% reliability. A novel tracking method employing such ...
Wooyoung Kim; Kirill Mechitov; Jeung-Yoon Choi; Soo Ham
Overview of the TREC 2011 Legal Track
... USF University of Waterloo UW Ursinus College URS Table 1: Organizations participating in the TREC 2011 Legal Track. ...
37, p.325, 2012 17 Advanced Manufacturing 18 Permanent magnets and batteries o Molten salt electrolysis process * Use Mg to reduce the melting points of heavy rare...
Environmental Assessment Midnight Point and Mahogany Geothermal Exploration Projects, Glass Buttes, Oregon April 2013 Prepared By Bureau of Land Management - Prineville and Burns...
National Nuclear Security Administration (NNSA)
y x Main crack surface Dislocation loops Crack initiation point Crack branching (BLJ + thermal motion) Crack embryo 3D view of surface particles Developed crack Crack development...
Airport Solar Photovoltaic Concentrator Project. Phase 1 - final report, June 1, 1978-February 28, 1979
The system design, analysis, and specification, site preparation, and operation and evaluation plan for a 500 kWe photovoltaic power supply to be located at the Phoenix Sky Harbor International Airport in Phoenix, Arizona, are presented. The solar cell arrays are concentrator silicon solar cells with tracking 70X Cassegrain-type concentrators. The power conditioning system, tracking system, and control systems are described in detal. Environmental impact studies are described. Component specifications and drawings are included. (WHK)
Future risks of satellite-based tracking
This study finds out if in the future, some special risks concerning satellite-based tracking and navigation occur. To find out possible future risks, future research methods such as scenarios were being used. Forecasting the future is impossible, but ... Keywords: future research, risk management, satellite-base tracking, satellite-based navigation, tracking
Miikka Ohisalo; Otto Tiuri; Tatu Urpila; Jyri Rajam�ki
A medical tracking system for contrast media
Contrast media is a kind of chemical substance used to improve the image quality of Computed Tomography. However, due to its high speed of injection, emergencies (such as capillary hemorrhage) always exist. In view of this problem, a video object tracking ... Keywords: color histogram, mean shift algorithm, tracking, visual tracking
Chuan Dai; Zhelong Wang; Hongyu Zhao
Simultaneous Localization, Mapping and Moving Object Tracking
Simultaneous localization, mapping and moving object tracking (SLAMMOT) involves both simultaneous localization and mapping (SLAM) in dynamic environments and detecting and tracking these dynamic objects. In this paper, a mathematical framework is ... Keywords: detection, localization, mapping, mobile robotics, robotic perception, tracking
Chieh-Chih Wang; Charles Thorpe; Sebastian Thrun; Martial Hebert; Hugh Durrant-Whyte
Experimental Measurements of Concentration Fluctuations and Scales in a Dispersing Plume in the Atmospheric Surface Layer Obtained Using a Very Fast Response Concentration Detector
High-frequency fluctuations of concentration in a plume dispersing in the atmospheric surface layer have been measured with high-resolution concentration detectors (approximately 270 Hz at the ?6-dB point) to extract various concentration ...
Eugene Yee; R. Chan; P. R. Kosteniuk; G. M. Chandler; C. A. Biltoft; J. F. Bowers
Indoor tracking of laboratory mice via an rfid-tracking framework
In this paper a solution for tracking of laboratory mice in an indoor semi natural environment based on RIFD-Technology is presented. A tracking framework is built where combined sensors identify and track the mice continuously 24 hours a day and 7 days ... Keywords: RFID, localization, tracking
Mareike Kritzler; Stephanie Jabs; Philipp Kegel; Antonio Kr�ger
Linear Concentrator Systems for Concentrating Solar Power
Linear concentrating solar power (CSP) collectors capture the sun's energy with large mirrors that reflect and focus the sunlight onto a linear receiver tube. The receiver contains a fluid that is...
Status of photovoltaic concentrator modules and systems
Several leading line- and point-focus photovoltaic concentrator system development programs are reviewed, including those by ENTECH, SEA Corporation, AMONIX, and Alpha Solarco. Concentrating collectors and trackers are gaining maturity and reaching product status as designs are made more manufacturable and reliable. Utilities are starting to take notice of this emerging technology, and several privately-funded utility installations are underway. Several advantages are offered by concentrators, including low system and capital cost and rapid production ramp-up. These are discussed along with issues generally raised concerning concentrator technology.
Maish, A.B.
Photovoltaic concentrator module improvements study
This report presents results of a project to design and fabricate an improved photovoltaic concentrator module. Using previous work as a baseline, this study conducted analyses and testing to select major module components and design features. The lens parquet and concentrator solar cell were selected from the highest performing, available components. A single 185X point-focus module was fabricated by the project team and tested at Sandia. Major module characteristics include a 6 by 4 compression-molded acrylic lens parquet (0.737 m{sup 2} area), twenty-four 0.2 ohms-cm, FZ, p-Si solar cells (1.56 cm{sup 2} area) soldered to ceramic substrates and copper heat spreaders, and an aluminized steel housing with corrugated bottom. This project marked the first attempt to use prismatic covers on solar cells in a high-concentration, point-focus application. Cells with 15 percent metallization were obtained, but problems with the fabrication and placement of prismatic covers on these cells lead to the decision not to use covers in the prototype module. Cell assembly fabrication, module fabrication, and module optical design activities are presented here. Test results are also presented for bare cells, cell assemblies, and module. At operating conditions of 981 watts/m{sup 2} DNI and an estimated cell temperature of 65{degrees}C, the module demonstrated an efficiency of 13.9 percent prior to stressed environmental exposure. 12 refs., 56 figs., 7 tabs.
Levy, S.L.; Kerschen, K.A. (Black and Veatch, Kansas City, MO (United States)); Hutchison, G. (Solar Kinetics, Inc., Dallas, TX (United States)); Nowlan, M.J. (Spire Corp., Bedford, MA (United States))
Sustainable Energy Science and Engineering Center Concentrating Collectors
. Parabolic trough collector: A high-temperature (above 360K) solar thermal concentrator with the capacity) Tubular absorbers with specular cusp reflector; c) Plane receiver with plane reflector; d) parabolic for tracking the sun using one axis of rotation. It uses a trough covered with a highly reflective surface
Krothapalli, Anjaneyulu
Point defects in silicon crystals studied via complexes with hydrogen
We studied the properties of irradiation-induced point defects and thermal equilibrium vacancies in Si by detecting hydrogen interacting with these point defects. First, we show the irradiation temperature dependence of the point defect concentration. ... Keywords: Frenkel pairs, hydrogen, migration energy, self-interstitials, silicon, vacancies
M. Suezawa; N. Fukata; Y. Takada; R. Taniguchi; F. Hori; R. Oshima
Point-Based Graphics
The polygon-mesh approach to 3D modeling was a huge advance, but today its limitations are clear. Longer render times for increasingly complex images effectively cap image complexity, or else stretch budgets and schedules to the breaking point. Point-based ... Keywords: Computer Graphics, Computers
Markus Gross; Hanspeter Pfister
Rail Topic Group Transportation External Coordination Rail Topic Group Rail Topic Group Transportation External Coordination Rail Topic Group Presented by: Presented by: Cort Richardson Council of State Governments- Eastern Regional Conference March 15 2006 March 15 2006 Washington, DC Washington, DC 2 Rail Topic Group Summary * Since the last TEC meeting in September, the approach of the Topic Group was to divide into subgroups to address activities important to the Topic Group as a whole * The subgroups are: - Inspections - Tracking and Radiation Monitoring - Planning - Lessons Learned - TRAGIS - Legal Weight Truck Shipments
Case study of a central-station grid-intertie photovoltaic system with V-trough concentration
This presentation is a cast study of an installed, central-station (no storage), utility-intertie photovoltaic (PV) system in Sede Boqer, Israel (latitude 30.9{degree}N). The nominally 12 kW peak PV system is comprised of 189 polycrystalline silicon modules mounted on inexpensive, one-axis north-south horizontal trackers with V-trough mirrors for optical boost. The power conditioning unit operates at a fixed voltage rather than at maximum power point (MPP). The primary task in analyzing the installed system was to investigate the cause of measured power output significantly below the design predictions of the installers, and to recommend system design modifications. Subsequent tasks included the quantitative assessment of fixed-voltage operation and of the energetic value of V-trough concentration and one-axis tracking for this system. Sample results show: (1) fixed-voltage operation at the best fixed voltage (BFV) can achieve around 96% of the yearly energy of MPP operation; (2) the sensitivity of the yearly energy delivery to the selection of fixed voltage and its marked asymmetry about the BFV; (3) the influences of inverter current constraints on yearly energy delivery and BFV; and (4) how the separate effects of tracking and optical concentration increase yearly energy delivery.
Freilich, J.; Gordon, J.M. (Ben-Gurion Univ. of the Negev, Sede Boqer (Israel))
Keeping track of the damage
News Archives: News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Keeping track of the damage Scientists resolve long-standing mystery of ion-solid interactions Reprinted with kind permission from ScienceWise - Science Magazine of the Australian National University JANUARY 27, 2009 Bookmark and Share Dr. Patrick Kluth and Claudia Schnohr. Silica (silicon dioxide) is the most abundant mineral in the earth's crust and consequently is a core component in many rocks. It's quite common for such rocks to also contain natural traces of materials like uranium that undergo slow radioactive decay. This radioactivity produces energetic particles that smash through the surrounding silica creating tracks of localized damage in their wake.
Plenary II -- Track Safety Standards
TSS 2001 A TSS 2001 A V 1.0 1 Federal Railroad Administration Track Safety Standards (TSS) 49 CFR Part 213 Subpart A - General Excepted Track & Classes 1 - 5 Overview TSS 2001 A V 1.0 2 Presentation Notes * This presentation is intended to provide guidance in broad terms. It is not intended to serve as a complete explanation of the regulations or as a substitute for application of the regulations to specific facts. * With the exception of definitions, each section shown in this presentation are brief summaries of the regulation text. User must consult the complete regulation documentation when necessary. * This presentation is based on the Final Rule published in the Federal Register June 22, 1998, Vol. 63, No. 119, [Docket RST-90-1, Notice 8] effective Sept. 21, 1998 and
Secondary concentrators for parabolic dish solar thermal power systems
One approach to production of electricity or high-temperature process heat from solar energy is to use point-focusing, two-axis pointing concentrators in a distributed-receiver solar thermal system. This paper discusses some of the possibilities and problems in using compound concentrators in parabolic dish systems. 18 refs.
Jaffe, L.D.; Poon, P.T.
Tracking in Antiproton Annihilation Experiments
A major ingredient of the planned new accelerator complex FAIR, to be constructed at the GSI, Darmstadt, Germany, is the availability of antiproton beams with high quality and intensity. Among the experiments which will make use of this opportunity is PANDA, a dedicated experiment to study antiproton annihilations on nucleons and nuclei. This article gives an overview on the foreseen techniques to perform charged particle tracking in the high rate environment of this experiment.
O. N. Hartmann
Infrared tag and track technique
A method of covertly tagging an object for later tracking includes providing a material capable of at least one of being applied to the object and being included in the object, which material includes deuterium; and performing at least one of applying the material to the object and including the material in the object in a manner in which in the appearance of the object is not changed, to the naked eye.
Partin, Judy K. (Idaho Falls, ID); Stone, Mark L. (Idaho Falls, ID); Slater, John (Albuquerque, NM); Davidson, James R. (Idaho Falls, ID)
Concentrator Photovoltaic Systems
Concentrator photovoltaic (PV) systems use less solar cell material than other PV systems. PV cells are the most expensive components of a PV system, on a per-area basis. A concentrator makes use...
Concentrating Solar Power
Concentrating solar power (CSP) technologies use mirrors to reflect and concentrate sunlight onto receivers that collect solar energy and convert it to heat. This thermal energy can then be used to...
Porous fission fragment tracks in fluorapatite
Fission tracks caused by the spontaneous fission of {sup 238}U in minerals, as revealed by chemical etching, are extensively used to determine the age and thermal history of Earth's crust. Details of the structure and annealing of tracks at the atomic scale have remained elusive, as the original track is destroyed during chemical etching. By combining transmission electron microscopy with in situ heating, we demonstrate that fission tracks in fluorapatite are actually porous tubes, instead of having an amorphous core, as generally assumed. Direct observation shows thermally induced track fragmentation in fluoapatite, in clear contrast to the amorphous tracks in zircon, which gradually ''fade'' without fragmentation. Rayleigh instability and the thermal emission of vacancies control the annealing of porous fission tracks in fluorapatite.
Li Weixing; Ewing, Rodney C. [Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-2104 (United States); Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109-2104 (United States); Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1005 (United States); Wang Lumin [Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-2104 (United States); Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109-2104 (United States); Sun Kai [Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-2104 (United States); Lang, Maik [Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1005 (United States); Trautmann, Christina [GSI Helmholtz Centre for Heavy Ion Research, Planckstr. 1, 64291 Darmstadt (Germany)
Summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its concentrating solar power subprogram.
The Timepix Telescope for High Performance Particle Tracking
The Timepix particle tracking telescope has been developed as part of the LHCb VELO Upgrade project, supported by the Medipix Collaboration and the AIDA framework. It is a primary piece of infrastructure for the VELO Upgrade project and is being used for the development of new sensors and front end technologies for several upcoming LHC trackers and vertexing systems. The telescope is designed around the dual capability of the Timepix ASICs to provide information about either the deposited charge or the timing information from tracks traversing the 14 x 14mm matrix of 55 x 55 um pixels. The rate of reconstructed tracks available is optimised by taking advantage of the shutter driven readout architecture of the Timepix chip, operated with existing readout systems. Results of tests conducted in the SPS North Area beam facility at CERN show that the telescope typically provides reconstructed track rates during the beam spills of between 3.5 and 7.5 kHz, depending on beam conditions. The tracks are time stamped with 1 ns resolution with an efficiency of above 98% and provide a pointing resolution at the centre of the telescope of 1.6 um . By dropping the time stamping requirement the rate can be increased to 15 kHz, at the expense of a small increase in background. The telescope infrastructure provides CO2 cooling and a flexible mechanical interface to the device under test, and has been used for a wide range of measurements during the 2011-2012 data taking campaigns.
Kazuyoshi Akiba; Per Arne Ronning; Martin van Beuzekom; Vincent van Beveren; Silvia Borghi; Henk Boterenbrood; Jan Buytaert; Paula Collins; Alvaro Dosil Suarez; Raphael Dumps; Lars Eklund; Daniel Esperante; Abraham Gallas; Hamish Gordon; Bas van der Heijden; Christoph Hombach; Daniel Hynds; Malcolm John; Alexander Leflat; Yi Ming Li; Ian Longstaff; Alexander Morton; Noritsugu Nakatsuka; Andre Nomerotski; Chris Parkes; Eliseo Perez Trigo; Richard Plackett; Matthew M. Reid; Pablo Rodriguez Perez; Heinrich Schindler; Tomasz Szumlak; Panagiotis Tsopelas; Carlos Vazquez Sierra; Jaap Velthuis; Michal Wysokinski
Photovoltaic concentrator initiative: Concentrator cell development
This project involves the development of a large-area, low-cost, high-efficiency concentrator solar cell for use in the Entech 22-sun linear-focus Fresnel lens concentrator system. The buried contact solar cell developed at the University of New South Wales was selected for this project. Both Entech and the University of New South Wales are subcontractors. This annual report presents the program efforts from November 1990 through December 1991, including the design of the cell, development of a baseline cell process, and presentation of the results of preliminary cell processing. Important results include a cell designed for operation in a real concentrator system and substitution of mechanical grooving for the previously utilized laser scribing.
Wohlgemuth, J.H.; Narayanan, S. [Solarex Corp., Frederick, MD (US)
974 1 974 1 Introducing SAM (Sun and Aureole Measurement), a New, Ground-based Capability for Measuring Cloud Optical Properties Presented to Cloud Properties Working Group IRF Working Group ARM Science Team Meeting John DeVore (email@example.com) A.T. Stair (firstname.lastname@example.com) Bob McClatchey 1 (email@example.com) Visidyne, Inc. 781-273-2820 March 2006 1 Consultant VI-4974 2 Space-Based Sun-Tracking Zenith-Viewing Cirrus (Ice Columns) Solar elevation = 45 deg Sat depression = 45 deg Surface albedo = 0.2 10 +4 10 +2 10 +0 10 -2 550 nm Radiance (W/cm 2 /sr/μm) 0.1 1.0 100. 10. Optical Depth Space-Based Sun-Tracking Zenith-Viewing Cirrus (Ice Columns) Solar elevation = 45 deg Sat depression = 45 deg Surface albedo = 0.2 10 +4 10 +2 10 +0 10 -2 550 nm Radiance (W/cm 2 /sr/μm) 0.1 1.0 100. 10. Optical Depth
A parametric study of the impact of various error contributions on the flux distribution of a solar dish concentrator.
Dish concentrators can produce highly concentrated flux for the operation of an engine, a chemical process, or other energy converter. The high concentration allows a small aperture to control thermal losses, and permits high temperature processes at the focal point. A variety of optical errors can influence the flux pattern both at the aperture and at the absorber surface. Impacts of these errors can be lost energy (intercept losses), aperture compromise (increased size to accommodate flux), high peak fluxes (leading to part failure or life reduction), and improperly positioned flux also leading to component failure. Optical errors can include small scale facet errors ('waviness'), facet shape errors, alignment (facet pointing) errors, structural deflections, and tracking errors. The errors may be random in nature, or may be systematic. The various sources of errors are often combined in a 'root-mean-squared' process to present a single number as an 'error budget'. However, this approach ignores the fact that various errors can influence the performance in different ways, and can mislead the designer, leading to component damage in a system or poor system performance. In this paper, we model a hypothetical radial gore dish system using Sandia's CIRCE2 optical code. We evaluate the peak flux and incident power through the aperture and onto various parts of the receiver cavity. We explore the impact of different error sources on the character of the flux pattern, and demonstrate the limitations of lumping all of the errors into a single error budget.
Yellowhair, Julius; Iverson, Brian D.; Andraka, Charles E.
Definition: Point To Point Transmission Service | Open Energy...
non-firm basis from the Point(s) of Receipt to the Point(s) of Delivery.1 Related Terms transmission lines, transmission line References Glossary of Terms Used in Reliability...
Team Sand Point (SP)
The purpose of this flight report is to summarize the field activities of the ShoreZone aerial video imaging (AVI) survey conducted out of Sand Point and Cold Bay in
Team Cold Bay (cb
Dew Point and Dogs
hounds for hunting. I recently had a situation where the temperature was 68 degrees, humidity was 54% and dew point was 62 degrees. My dogs were not able to perform as well as...
ARM - Point Reyes News
Takes Off in July June 30, 2005 Guest Instruments to Collect Aerosol Data During Coastal Field Campaign June 15, 2005 Mobile Facility Arrives Safe and Sound in Point Reyes...
Renewable Energy Finance Tracking Initiative (REFTI) Solar Trend Analysis
This report is a summary of the finance trends for small-scale solar photovoltaic (PV) projects (PV <1 MW), large-scale PV projects (PV greater than or equal to 1 MW), and concentrated solar power projects as reported in the National Renewable Energy Laboratory's Renewable Energy Finance Tracking Initiative (REFTI). The report presents REFTI data during the five quarterly periods from the fourth quarter of 2009 to the first half of 2011. The REFTI project relies exclusively on the voluntary participation of industry stakeholders for its data; therefore, it does not offer a comprehensive view of the technologies it tracks. Despite this limitation, REFTI is the only publicly available resource for renewable energy project financial terms. REFTI analysis offers usable inputs into the project economic evaluations of developers and investors, as well as the policy assessments of public utility commissions and others in the renewable energy industry.
Hubbell, R.; Lowder, T.; Mendelsohn, M.; Cory, K.
Assessment of Autonomic Control and Respiratory Sinus Arrhythmia Using Point Process Models of Human Heart Beat Dynamics
Tracking the autonomic control and respiratory sinus arrhythmia (RSA) from electrocardiogram and respiratory measurements is an important problem in cardiovascular control. We propose a point process adaptive filter algorithm ...
Chen, Zhe
Nuclear Track Detector Characterization via Alpha-Spectrometry for Radioprotection Use
Solid Nuclear Track Detectors (SNTDs), CR-39 type, are usually adopted to monitor radon gas concentrations. In order to characterize the detectors according to track geometrical parameters, detectors were irradiated inside a vacuum chamber by alpha particles at twelve energy values, obtained by different Mylar foils in front of a {sup 241}Am source. The alpha energy values were verified using a Si detector. After the exposure to the alpha particles, the detectors were chemically etched to enlarge the tracks, which were then analyzed by means of a semiautomatic system composed of an optical microscope equipped with a CCD camera connected to a personal computer to store images. A suitable routine analyzed the track parameters: major and minor axis length and mean grey level, allowing us to differentiate tracks according to the incident alpha energy and then to individuate the discrimination factors for radon alpha tracks. The combined use of geometrical and optical parameters allows one to overcome the ambiguity in the alpha energy determination due to the non-monotonicity of each parameter versus energy. After track parameter determination, a calibration procedure was performed by means of a radon chamber. The calibration was verified through an inter-comparing survey.
Morelli, D.; Imme, G.; Catalano, R. [Dipartimento di Fisica e Astronomia, Universita degli Studi di Catania, via S. Sofia, 64- 95123 Catania (Italy); Istituto Nazionale di Fisica Nucleare - Sezione di Catania, via S. Sofia, 64- 95123 Catania (Italy); Aranzulla, M. [Istituto Nazionale Geofisica e Vulcanologia - Sezione di Catania, piazza Roma, 2- 95127 Catania (Italy); Tazzer, A. L. Rosselli; Mangano, G. [Dipartimento di Fisica e Astronomia, Universita degli Studi di Catania, via S. Sofia, 64- 95123 Catania (Italy)
HIAPER Cloud Radar (HCR) HIAPER Cloud Radar (HCR) Vivek, Eric Loew, Gordon Farquharson, Scott Spuler and Wen-Chau Lee Earth Observing Laboratory NCAR, Boulder, Colorado NCAR maintains and deploys a suite of world-class remote sensing instruments (radars and lidars) in support of the atmospheric science community Develops innovative and state of the art "next-generation" remote sensors Motivation for Observational Instruments Key scientific challenges: When and where convection will be initiated? How to improve accuracy of a NWP model in describing on set of precipitation process? What factors control intensity and track of an hurricane? How does convection influence UTLS chemistry? How to parameterize aerosol and cloud interaction in an earth system model? Dual Use: Instruments should be deployable on airborne
Studies with the Studies with the Duke University Helicopter Observation Platform (HOP) M Adam Bolch and Roni Avissar Department of Civil and Environmental Engineering Duke University October 16, 2008 Why a helicopter? 1. Various environmental observations require low altitude, very-high frequency of sampling, and/or slow speed of sampling (e.g., aerosols, which have a key impact on climate and health; fluxes - water, carbon, others) 2. Maneuverability (complex terrain, urban areas, quick turns for flight tracks) 3. Time at station (with a fuel truck on the ground, no need to commute to an airport) 4. Remote location (e.g., operation from a ship) Why a helicopter? Federal Aviation Regulation (FAR) § 91.119 Minimum safe altitudes: General. Except when necessary for takeoff or landing, no person may operate an aircraft below the following altitudes:
Cloud Life Cycle and Structure Cloud Life Cycle and Structure A.M. Vogelmann, E. Luke, M.P. Jensen, P. Kollias, Brookhaven National Laboratory, Upton, New York and E.R. Boer LUEBEC, San Diego, CA SUMMARY SUMMARY * * Cloud tracking using geostationary satellite data provides a context of the cloud state observed at the ARM Sites, including the cloud's life-cycle stage and its representativeness of the region. * * Examples are presented of the duration and paths of mesoscale convective systems within the Tropical Western Pacific. * * This information will be used to interpret the cloud microphysical retrievals and overlap structure measured at the ARM sites. Reference Reference Boer, E. R., and V. Ramanathan, 1997: Lagrangian approach for deriving cloud characteristics from satellite observations and its implications to cloud
in Western Utility Energy Efficiency in Western Utility in Western Utility Energy Efficiency in Western Utility Resource Plans Resource Plans Implications for Regional Assessments and Implications for Regional Assessments and Initiatives Initiatives Charles Goldman Nicole Hopper Lawrence Berkeley National Laboratory CREPC Meeting San Diego, CA September 28, 2006 Overview of Presentation Overview of Presentation * LBNL/CREPC Resource Assessment Project - Overview - Data Sources * Treatment of Energy Efficiency (EE) in Resource Plans - Why does it matter? * Energy Efficiency in Recent Resource Plans: - Common Inconsistencies and Data Problems - Levels of EE Proposed in Recent Utility Resource Plans * Recommendations and tools for tracking and reporting EE in future resource plans to support West-wide goals and analysis LBNL/CREPC Resource Assessment Project LBNL/CREPC Resource Assessment Project
A New Zealand Test Of The Track-Etch Method Of Prospecting For Geothermal
Zealand Test Of The Track-Etch Method Of Prospecting For Geothermal Zealand Test Of The Track-Etch Method Of Prospecting For Geothermal Steam Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A New Zealand Test Of The Track-Etch Method Of Prospecting For Geothermal Steam Details Activities (0) Areas (0) Regions (0) Abstract: The Track Etch® system for radon detection was evaluated as a geothermal exploration technique in a known geothermal resource area in New Zealand called the Craters of the Moon (previously known as "Karapiti"). Very strong radon anomalies spaced along mapped fault traces were detected using 60-m sample spacings. Such radon anomalies may indicate good areas to drill for steam. The anomalies detected in these tests were located inside a larger area known to have above-back-ground concentrations of radon and
Trans-Pecos Photovoltaic Concentration Experiment. Final report for Phase-I system design, 6 June 1978-28 February 1979
The Trans-Pecos Photovoltaic Concentrating Experiment is the design of a 200 kWe peak photovoltaic concentrating system applied to deep well irrigation in the Trans-Pecos region of Texas. The site selected is typical of deep well irrigation in arid regions of Texas, New Mexico, and Arizona. The existing well utilizes a 200 horse power, three phase, 480 volt induction motor to lift water 540 feet to irrigate 380 acres. The Trans-Pecos Photovoltaic Concentration (PVC) system employs a two axis (azimuth-elevation) tracking parabolic concentrator module that focuses sunlight at 38X concentration on two strings of actively cooled silicon solar cells. The direct current from a field of 102 collector modules is converted by a maximum power point electric power conditioning system to three phase alternating current. The power from the power conditioning system is connected through appropriate switchgear in parallel with the utility grid to the well's induction motor. The operational philosophy of the experiment is to displace daytime utility power with solar generated electric power. The solar system is sized to provide approximately 50 percent of the 24 hour energy demand of the motor. This requires an energy exchange with the utility since peak solar power (200 kWe) generated exceeds the peak motor demand (149.2 kWe). The annual energy production is projected to be 511 Mwh using El Paso, Texas solar TMY data. System electrical power production efficiency is projected to be 7.4 percent at the design point, and 7.0 percent on an annual electrical energy production basis. The system is projected to provide 37.8 percent of the 24 hour energy demand of the motor at the design point of March 10, excluding energy delivered to the grid in excess of motor demand. The total energy produced is projected to be 39.0 percent of the 24 hour energy demand of the motor at the design point of March 10.
Marcy, W.M.; Dudek, R.A.
Tracking system for solar collectors
A tracking system is provided for pivotally mounted spaced-apart solar collectors. A pair of cables is connected to spaced-apart portions of each collector, and a driver displaces the cables, thereby causing the collectors to pivot about their mounting, so as to assume the desired orientation. The collectors may be of the cylindrical type as well as the flat-plate type. Rigid spar-like linkages may be substituted for the cables. Releasable attachments of the cables to the collectors is also described, as is a fine tuning mechanism for precisely aligning each individual collector.
Butler, B.
Butler, Barry L. (Golden, CO)
NREL: Concentrating Solar Power Research - Laboratory Capabilities
Laboratory Capabilities Laboratory Capabilities To research, develop, and test a variety of concentrating solar power technologies, NREL features the following laboratory capabilities: High-Flux Solar Furnace (HFSF) Large Payload Solar Tracker Advanced Optical Materials Laboratory Advanced Thermal Storage Materials Laboratory Optical Testing Laboratory and Beam Characterization System Receiver Test Laboratory Heat Collection Element (HCE) Temperature Survey Photo of NREL's High-Flux Solar Furnace. NREL's High-Flux Solar Furnace. High-Flux Solar Furnace (HFSF) The power generated at NREL's High-Flux Solar Furnace (HFSF) can be used to expose, test, and evaluate many components-such as receivers, collectors, and reflector materials-used in concentrating solar power systems. The 10-kilowatt HFSF consists of a tracking heliostat and 25 hexagonal
Chicago Office NEPA Tracking Number U. S. DEPARTMENT OF ENERGY
SFCH F 560-ACQ SFCH F 560-ACQ (11/05) Previous editions are obsolete. ~1,6~.. --1 b Chicago Office NEPA Tracking Number U. S. DEPARTMENT OF ENERGY OFFICE OF SCIENCE -- CHICAGO OFFICE NATIONAL ENVIRONMENTAL POLICY ACT (NEPA) ENVIRONMENTAL EVALUATION NOTIFICATION FORM To be completed by "financial assistance award" organization receiving Federal funding. For assistance (including a point of contact), see "Instructions for Preparing SC-CH F-560, Environmental Evaluation Notification Form ". Solicitation/Award No. (if applicable): N/A Organization Name: New Brunswick Laboratory (NBL) Title of Proposed Project/Research: GENERIC CATEGORICAL EXCLUSION (CX) FOR THE NBL: Renovations and maintenance activities for buildings, structures, infrastructures and equipment
Improving Floating Point Compression
Improving Improving Floating Point Compression through Binary Masks Leonardo A. Bautista Gomez Argonne National Laboratory Franck Cappello Argonne National Laboratory Abstract-Modern scientific technology such as particle accel- erators, telescopes and supercomputers are producing extremely large amounts of data. That scientific data needs to be processed using systems with high computational capabilities such as supercomputers. Given that the scientific data is increasing in size at an exponential rate, storing and accessing the data is becoming expensive in both, time and space. Most of this scientific data is stored using floating point representation. Scientific applications executed in supercomputers spend a large amount of CPU cycles reading and writing floating point values, making data compression techniques an interesting way to increase computing efficiency.
Strategic Focus Points
Focus Points Focus Points June 2011 1. Establish the human capital and organizational foundation to create a high-performing organization. 2. Implement a cyber risk-management and incident response program that ensures effective security of Federal and M&O networks, provides appropriate flexibility, and meets legal requirements and OMB expectations. 3. Improve IT Services (EITS) into a best-in-class provider from both a technical and business perspective. 4. Implement and institutionalize a reformed, integrated information management governance process that respects the goal to treat M&Os distinctively different than true Federal entities. 5. Transition to 5-year planning and programming, using the NNSA Planning, Programming, Budgeting and Evaluation (PPBE) process as a starting point to include resource and requirements validation.
Gas Turbine Hot Section Component Life Tracking
Damage tracking software�backed by comprehensive analysis techniques�provides a means for owners/operators to independently track and predict life consumption for critical gas turbine hot section components. Results can be compared with equipment supplier formulated intervals. This report updates the development status of damage tracking software for managing life-cycle costs by improving owner/operator understanding of component life and life consumption as a function of turbine ...
Building the RHIC tracking lattice model
In this note we outline the procedure to build a realistic lattice model for the RHIC beam-beam tracking simulation. We will install multipole field errors in the arc main dipoles, arc main quadrupols and interaction region magnets (DX, D0, and triplets) and introduce a residual closed orbit, tune ripples, and physical apertures in the tracking lattice model. Nonlinearities such as local IR multipoles, second order chromaticies and third order resonance driving terms are also corrected before tracking.
Luo, Y.; Fischer, W.; Tepikian, S.
Compressive Object Tracking using Entangled Photons
We present a compressive sensing protocol that tracks a moving object by removing static components from a scene. The implementation is carried out on a ghost imaging scheme to minimize both the number of photons and the number of measurements required to form a quantum image of the tracked object. This procedure tracks an object at low light levels with fewer than 3% of the measurements required for a raster scan, permitting us to more effectively use the information content in each photon.
Omar S. Maga�a-Loaiza; Gregory A. Howland; Mehul Malik; John C. Howell; Robert W. Boyd
Understanding multistage attacks by attack-track based visualization of heterogeneous event streams
In this paper, we present a method of handling the visualization of hetereogeneous event traffic that is generated by intrusion detection sensors, log files and other event sources on a computer network from the point of view of detecting multistage ... Keywords: attack tracks, intrusion detection, visualization
S. Mathew; R. Giomundo; S. Upadhyaya; M. Sudit; A. Stotz
A variable speed wind generator maximum power tracking based on adaptative neuro-fuzzy inference system
The power from wind varies depending on the environmental factors. Many methods have been proposed to locate and track the maximum power point (MPPT) of the wind, such as the fuzzy logic (FL), artificial neural network (ANN) and neuro-fuzzy. In this ... Keywords: ANFIS, MPPT, Power generation, Variable speed wind generator, Wind energy
A. Meharrar; M. Tioursi; M. Hatti; A. Boudgh�ne Stambouli
Experimental investigation of a moving averaging algorithm for motion perpendicular to the leaf travel direction in dynamic MLC target tracking
Purpose: In dynamic multileaf collimator (MLC) motion tracking with complex intensity-modulated radiation therapy (IMRT) fields, target motion perpendicular to the MLC leaf travel direction can cause beam holds, which increase beam delivery time by up to a factor of 4. As a means to balance delivery efficiency and accuracy, a moving average algorithm was incorporated into a dynamic MLC motion tracking system (i.e., moving average tracking) to account for target motion perpendicular to the MLC leaf travel direction. The experimental investigation of the moving average algorithm compared with real-time tracking and no compensation beam delivery is described. Methods: The properties of the moving average algorithm were measured and compared with those of real-time tracking (dynamic MLC motion tracking accounting for both target motion parallel and perpendicular to the leaf travel direction) and no compensation beam delivery. The algorithm was investigated using a synthetic motion trace with a baseline drift and four patient-measured 3D tumor motion traces representing regular and irregular motions with varying baseline drifts. Each motion trace was reproduced by a moving platform. The delivery efficiency, geometric accuracy, and dosimetric accuracy were evaluated for conformal, step-and-shoot IMRT, and dynamic sliding window IMRT treatment plans using the synthetic and patient motion traces. The dosimetric accuracy was quantified via a {gamma}-test with a 3%/3 mm criterion. Results: The delivery efficiency ranged from 89 to 100% for moving average tracking, 26%-100% for real-time tracking, and 100% (by definition) for no compensation. The root-mean-square geometric error ranged from 3.2 to 4.0 mm for moving average tracking, 0.7-1.1 mm for real-time tracking, and 3.7-7.2 mm for no compensation. The percentage of dosimetric points failing the {gamma}-test ranged from 4 to 30% for moving average tracking, 0%-23% for real-time tracking, and 10%-47% for no compensation. Conclusions: The delivery efficiency of moving average tracking was up to four times higher than that of real-time tracking and approached the efficiency of no compensation for all cases. The geometric accuracy and dosimetric accuracy of the moving average algorithm was between real-time tracking and no compensation, approximately half the percentage of dosimetric points failing the {gamma}-test compared with no compensation.
Yoon, Jai-Woong; Sawant, Amit; Suh, Yelin; Cho, Byung-Chul; Suh, Tae-Suk; Keall, Paul [Department of Biomedical Engineering, College of Medicine, Catholic University of Korea, Seoul, Korea 131-700 and Research Institute of Biomedical Engineering, Catholic University of Korea, Seoul, 131-700 (Korea, Republic of); Department of Radiation Oncology, Stanford University, Stanford, California 94305 (United States); Department of Radiation Oncology, Stanford University, Stanford, California 94305 (United States) and Department of Radiation Oncology, Asan Medical Center, Seoul, 138-736 (Korea, Republic of); Department of Biomedical Engineering, College of Medicine, Catholic University of Korea, Seoul, 131-700 and Research Institute of Biomedical Engineering, Catholic University of Korea, Seoul, 131-700 (Korea, Republic of); Department of Radiation Oncology, Stanford University, Stanford, California 94305 (United States) and Radiation Physics Laboratory, Sydney Medical School, University of Sydney, 2006 (Australia)
Method for motion tracking during tomographic scanning
Method for motion tracking during tomographic scanning Note: The technology described above is an early stage opportunity. Licensing rights to this intellectual ...
Measure, track, and benchmark | ENERGY STAR
tracking and benchmarking of energy across all operations are your most powerful energy waste reduction tools. Reducing energy waste requires that all forms of energy be...
Tracking Clean Energy Progress Energy Technology Perspectives...
Technology Perspectives 2012 excerpt as IEA input to the Clean Energy Ministerial Tracking Clean Energy Progress Energy Technology Perspectives 2012 Pathways to a Clean Energy...
Pollution Prevention Tracking and Reporting System
Welcome to the Department of Energy's Pollution Prevention Tracking and Reporting System (PPTRS). DOE uses this system to collect information about, and assess the performance of, the Department's...
TREC 2007 Legal Track: Main Task Glossary
TREC 2007 Legal Track: Main Task Glossary. Revision History. 2007 Oct 2: st: first draft. qrelsL07.normal. The qrelsL07.normal ...
A Comparison of Recent Reanalysis Datasets Using Objective Feature Tracking: Storm Tracks and Tropical Easterly Waves
Data from four recent reanalysis projects [ECMWF, NCEP�NCAR, NCEP�Department of Energy (DOE), NASA] have been diagnosed at the scale of synoptic weather systems using an objective feature tracking method. The tracking statistics indicate that, ...
K. I. Hodges; B. J. Hoskins; J. Boyle; C. Thorncroft
Airborne Infrared Target Tracking with the Nintendo Wii Remote Sensor
Intelligence, surveillance, and reconnaissance unmanned aircraft systems (UAS) are the most common variety of UAS in use today and provide invaluable capabilities to both the military and civil services. Keeping the sensors centered on a point of interest for an extended period of time is a demanding task requiring the full attention and cooperation of the UAS pilot and sensor operator. There is great interest in developing technologies which allow an operator to designate a target and allow the aircraft to automatically maneuver and track the designated target without operator intervention. Presently, the barriers to entry for developing these technologies are high: expertise in aircraft dynamics and control as well as in real- time motion video analysis is required and the cost of the systems required to flight test these technologies is prohibitive. However, if the research intent is purely to develop a vehicle maneuvering controller then it is possible to obviate the video analysis problem entirely. This research presents a solution to the target tracking problem which reliably provides automatic target detection and tracking with low expense and computational overhead by making use of the infrared sensor from a Nintendo Wii Remote Controller.
Beckett, Andrew 1984-
Concentration with uniform flux
A modification of a parabolic cylinder concentrator is developed to procedure uniform flux. The controlling surface equation is given. A three-dimensional ray-trace technique is used to obtain the shape of the image at the focal plane of a thin slice of the mirror. Also, the concentration distribution for uniform flux is given. 1 references, 7 figures.
Argonne PowerPoint Presentation
process into the TRACK code, stripping simulations (SNS, FNAL-HINS) - Lattice for the 8-GeV linac, "Project X" 5 Papers J. Xu, P. Ostroumov and J. Nolen, "A Parallel 3D Poisson...
measurements in the Arctic using lidar and radar data measurements in the Arctic using lidar and radar data Ed Eloranta University of Wis-Madison http://lidar.ssec.wisc.edu Lidar-Radar Measurement of Effective Diameter Radar scattering cross section ~ ~ ρ ~ D 6 Lidar scattering cross section ~ ~ D 2 D eff_prime ~ ( ( ) 4 Notice that this differs for the usual definition: D eff = Photos by Kenneth Libbrecht Problem: Ice crystals are not spherical Hex columns Spheroid model to represent measureable properties of a snowflake Top view Side view Radar backscatter ~ particle concentration Lidar extinction ~ particle concentration
Integrating plan-view tracking and color-based person models for multiple people tracking
Tracking multiple people in a dynamic environment is important in many applications. Recent research in this area has focused either on geometric analysis or appearance models. In this paper we distinguish four types of tracking problems, and then describe an approach for combining geometric analysis and appearance-based tracking to �hold on to � people in three of these situations. 1.
Luca Iocchi; Robert C. Bolles
Information analysis of rail track for predictive maintenance
Track defects are deviation of actual from theoretical values of the tracks geometrical characteristics. Track defects are macroscopic and geometric in nature and are exclusively the consequence of train traffic. [5] Rail track maintenance in terms of ... Keywords: CURV, cant def, cross level, dipped left, gauge, predictive maintenance management, rail track geometry
R. B. Faiz; S. Singh
EC PVSEC, Glasgow, May 2000 EFFICIENT 20-50 SUN CONCENTRATOR CELLS
: The Australian National University, together with commercial partners, has developed a Photovoltaic / Trough concentration system. It comprises two-axis sun-tracking parabolic glass mirrors and a receiver with solar cells with conventional PV systems. The Australian National University has developed a Photovoltaic / Trough Concentration
The NREL Outdoor Accelerated-weathering Tracking System and Photovoltaic Module Exposure Results
This paper describes the Outdoor Accelerated-weathering Tracking System (OATS) and interim results for the first OATS study on photovoltaic (PV) modules. With two test planes measuring 1.52 x 1.83 m, OATS provides a unique solar-concentrating exposure capability. Test sample temperatures are moderated by air blowers. Water spray capability exists for wetting samples. The OATS two-axis tracker points to the sun using software calculations. Non-imaging aluminum reflectors give a nominal clear-sky optical concentration ratio of three. Field-qualification measurements in the test plane under reflector conditions showed its relative irradiance non-uniformity was '' 15% for a clear-sky summer day with '' 75 mm as the smallest distance for that non-uniformity. Exposure studies began in November 1997 on seven pairs of commercially available ribbon silicon, crystalline silicon and amorphous silicon PV modules kept at constant resistive load. The modules were periodically removed from OATS for visual inspection and solar simulator performance measurements. There were no module failures. This PV module study is ongoing and later results will be compared to other testing techniques. Through July 1998, the modules under reflector conditions received 392 MJ/m2 of total ultraviolet (TUV) exposure. That was 2.07 times the TUV exposure compared to a south-facing fixed array tilted 40{sup o} up from horizontal at NREL. Similarly, the modules in the test plane under the covered reflectors received 1.04 times the fixed array TUV exposure. For the test plane under the covered reflectors there was a loss of 13% TUV exposure attributed to the reflectors blocking some of the diffuse-sky UV light. Also through July 1998, the OATS sunlight availability measured 95% compared to the cumulative global normal exposure at the NREL Solar Radiation Research Laboratory (SRRL). The OATS sunlight availability losses included downtime when the PV modules were removed, and when there were OAT S tracking problems, maintenance, and repair. For December 1997 through July 1998, the SRRL cumulative exposure was 99% compared to the respective monthly averages from years 1961 through 1990 at Boulder, Colorado.
Basso, T. S.
Position and orientation tracking system
A position and orientation tracking system presents a laser scanning appaus having two measurement pods, a control station, and a detector array. The measurement pods can be mounted in the dome of a radioactive waste storage silo. Each measurement pod includes dual orthogonal laser scanner subsystems. The first laser scanner subsystem is oriented to emit a first line laser in the pan direction. The second laser scanner is oriented to emit a second line laser in the tilt direction. Both emitted line lasers scan planes across the radioactive waste surface to encounter the detector array mounted on a target robotic vehicle. The angles of incidence of the planes with the detector array are recorded by the control station. Combining measurements describing each of the four planes provides data for a closed form solution of the algebraic transform describing the position and orientation of the target robotic vehicle.
Burks, Barry L. (Oak Ridge, TN); DePiero, Fred W. (Knoxville, TN); Armstrong, Gary A. (Oak Ridge, TN); Jansen, John F. (Knoxville, TN); Muller, Richard C. (Oak Ridge, TN); Gee, Timothy F. (Riceville, TN)
A position and orientation tracking system presents a laser scanning apparatus having two measurement pods, a control station, and a detector array. The measurement pods can be mounted in the dome of a radioactive waste storage silo. Each measurement pod includes dual orthogonal laser scanner subsystems. The first laser scanner subsystem is oriented to emit a first line laser in the pan direction. The second laser scanner is oriented to emit a second line laser in the tilt direction. Both emitted line lasers scan planes across the radioactive waste surface to encounter the detector array mounted on a target robotic vehicle. The angles of incidence of the planes with the detector array are recorded by the control station. Combining measurements describing each of the four planes provides data for a closed form solution of the algebraic transform describing the position and orientation of the target robotic vehicle. 14 figs.
Burks, B.L.; DePiero, F.W.; Armstrong, G.A.; Jansen, J.F.; Muller, R.C.; Gee, T.F.
Tracking $f(R)$ cosmology
Metric $f(R)$ gravity theories are conformally equivalent to models of quintessence in which matter is coupled to dark energy. We derive a condition for stable tracker solution for metric $f(R)$ gravity in the Einstein frame. We find that tracker solutions with $-0.3610$, where $\\Gamma=\\frac{V_{\\varphi\\varphi}V}{V_{\\varphi}^{2}}$ is dimensionless function, $\\omega_{\\varphi}$ is the equation of state parameter of the scalar field and $\\tilde{R}$ refers to Jordan frame's curvature scalar. Also, we show that there exists $f(\\tilde{R})$ gravity models which have tracking behavior in the Einstein frame and so the curvature of space time is decreasing with time while they lead to the solutions in the Jordan frame that the curvature of space time can be increasing with time.
Mahmood Roshan; Fatimah Shojai
Target tracking with binary proximity sensors
We explore fundamental performance limits of tracking a target in a two-dimensional field of binary proximity sensors, and design algorithms that attain those limits while providing minimal descriptions of the estimated target trajectory. Using geometric ... Keywords: Sensor networks, binary sensing, distributed algorithms, fundamental limits, target tracking
Nisheeth Shrivastava; Raghuraman Mudumbai; Upamanyu Madhow; Subhash Suri
Tracking Vehicles in traffic Surveillance Video
We present a system for detecting and tracking vehicles in surveillance video. Our algorithm uses a simple motion model to determine salient regions in a sequence of video frames. Similar regions are associated between frames and clustered to yield coherent final tracks. The entire process is automatic and uses computation time that scales according to the size of the input video sequence.
Maire, M; Kamath, C
Adaptive DFT-based interferometer fringe tracking
An automatic interferometer fringe tracking system has been developed, implemented, and tested at the Infrared Optical Telescope Array (IOTA) Observatory at Mount Hopkins, Arizona. The system can minimize the optical path differences (OPDs) for all three ... Keywords: DFT, IOTA, fringe tracking, interferometry, real time
Edward Wilson; Ettore Pedretti; Jesse Bregman; Robert W. Mah; Wesley A. Traub
Mean field approach for tracking similar objects
In this paper, we consider the problem of tracking similar objects. We show how a mean field approach can be used to deal with interacting targets and we compare it with Markov Chain Monte Carlo (MCMC). Two mean field implementations are presented. The ... Keywords: Kalman filter, Mean field, Multi-target tracking, Particle filter
C. Medrano; J. E. Herrero; J. Mart�nez; C. Orrite
Optimal Adaptive Waveform Selection for Target Tracking
Optimal Adaptive Waveform Selection for Target Tracking Barbara La Scala Mohammad Rezaeian Bill algorithms. This paper describes an optimal adaptive waveform selection algorithm for target tracking. An adap- tive scheduling algorithm that selects the waveforms to be used in future epochs based on current
Rezaeian, Mohammad-Jafar
Primitive Analysis of the Ship Tracking Problem
Satellite images reveal tracks of enhanced solar reflectivity in low-level stratus clouds over the ocean that are known to be produced by the aerosols emitted from diesel-powered ships. The question arises: Can we track a ship from such images? A ...
J. R. Philip; J. W. Rottman
Coupling Between Oceanic Upwelling and Cloud Coupling Between Oceanic Upwelling and Cloud Coupling Between Oceanic Upwelling and Cloud - - Aerosol Properties Aerosol Properties at the AMF Point Reyes Site at the AMF Point Reyes Site Maureen Dunn , Mike Jensen , Pavlos Kollias , Mark Miller , Peter Daum Mary Jane Bartholomew , David Turner , Elisabeth Andrews and Anne Jefferson Introduction Ground based observations from the MASRAD, Pt. Reyes AMF July 1-Sept 15, 2005 indicate a relationship between coastal marine stratus cloud properties, boundary layer cloud condensation nuclei and the upwelling of cool oceanic waters measured at an offshore NOAA buoy. Cloud Drizzle to CCN Atmosphere to Cloud Upwelling SST to Atmosphere Conclusion Coastal marine stratus clouds increase in thickness as the underlying sea surface
Assessment Assessment Midnight Point and Mahogany Geothermal Exploration Projects, Glass Buttes, Oregon April 2013 Prepared By Bureau of Land Management - Prineville and Burns Districts DOI-BLM-OR-P040-2011-0021-EA DOE/EA-1925 Environmental Assessment Midnight Point and Mahogany Geothermal Exploration Projects, Glass Buttes, Oregon April 2013 Lead Agency United States Department of the Interior Bureau of Land Management Prineville District 3050 N.E. 3rd Street, Prineville, OR 97754 Tel: 541 416 6700 Burns District 28910 Hwy 20 West, Hines, OR 97738 Tel: 541 573 4400 Cooperating Agency United States Department of Energy Golden Field Office Golden, Colorado 80401 Tel: 720-356-1563 Fax: 720-356-1560 April 2013 Environmental Assessment Table of Contents 1
Commercialization of the SuperOPF Commercialization of the SuperOPF Framework: Phase III (Theme: Co- optimization Stochastic SuperOPF- renewables) Performers: PSERC: Hsiao-Dong Chiang - LEAD Cornell University: Ray Zimmerman Bigwood Systems, Inc.: Patrick Causgrove, Bin Wang Phase I: 1.(support industrial model) A commercial-grade core SuperOPF software supporting various industrial-grade power system models such as (i) CIM-compliance; and (ii) PSS/E data format 2. A multi-stage OPF solver with adaptive homotopy-based Interior Point Method for large- scale power systems (PJM: 14,000-bus data) Bigwood Systems Inc., 2013 3 Results: Efficiency and Robustness (Analytical Jacobian matrices) Loading Conditions One-Staged Interior Point Method Multi-Staged Scheme 1 Succeeded Succeeded
This is a feasibility study of using a modern Graphics Processing Unit (GPU) to parallelize the accelerator particle tracking code. To demonstrate the massive parallelization features provided by GPU computing, a simplified TracyGPU program is developed for dynamic aperture calculation. Performances, issues, and challenges from introducing GPU are also discussed. General purpose Computation on Graphics Processing Units (GPGPU) bring massive parallel computing capabilities to numerical calculation. However, the unique architecture of GPU requires a comprehensive understanding of the hardware and programming model to be able to well optimize existing applications. In the field of accelerator physics, the dynamic aperture calculation of a storage ring, which is often the most time consuming part of the accelerator modeling and simulation, can benefit from GPU due to its embarrassingly parallel feature, which fits well with the GPU programming model. In this paper, we use the Tesla C2050 GPU which consists of 14 multi-processois (MP) with 32 cores on each MP, therefore a total of 448 cores, to host thousands ot threads dynamically. Thread is a logical execution unit of the program on GPU. In the GPU programming model, threads are grouped into a collection of blocks Within each block, multiple threads share the same code, and up to 48 KB of shared memory. Multiple thread blocks form a grid, which is executed as a GPU kernel. A simplified code that is a subset of Tracy++ [2] is developed to demonstrate the possibility of using GPU to speed up the dynamic aperture calculation by having each thread track a particle.
Nishimura, Hiroshi; Song, Kai; Muriki, Krishna; Sun, Changchun; James, Susan; Qin, Yong
Evaluating Point Forecasts
Typically, point forecasting methods are compared and assessed by means of an error measure or scoring function, such as the absolute error or the squared error. The individual scores are then averaged over forecast cases, to result in a summary measure of the predictive performance, such as the mean absolute error or the (root) mean squared error. I demonstrate that this common practice can lead to grossly misguided inferences, unless the scoring function and the forecasting task are carefully matched. Effective point forecasting requires that the scoring function be specified ex ante, or that the forecaster receives a directive in the form of a statistical functional, such as the mean or a quantile of the predictive distribution. If the scoring function is specified ex ante, the forecaster can issue the optimal point forecast, namely, the Bayes rule. If the forecaster receives a directive in the form of a functional, it is critical that the scoring function be consistent for it, in the sense that the expect...
Gneiting, Tilmann
Multi-Stage Multiple-Hypothesis Tracking
While multiple hypothesis tracking (MHT) is widely acknowledged as an effective methodology for multi-target surveillance, there is a challenge to manage effectively a potentially large number of track hypotheses. Advanced single-stage track-while-fuse does not always offer the best processing scheme. We study two instances where multi-stage MHT processing is beneficial�dense target scenarios and complementary-sensor surveillance�and propose two processing schemes for these challenges: track-break-fuse and trackbefore-fuse, respectively. We provide simulation results demonstrating the advantages of these schemes over track-while-fuse. Moregenerally, we argue that multi-stage MHT offers a powerful and flexible paradigm to circumvent limitations in conventional MHT processing.
Stefano Coraluppi; Craig Carthel
Organic photovoltaics and concentrators
The separation of light harvesting and charge generation offers several advantages in the design of organic photovoltaics and organic solar concentrators for the ultimate end goal of achieving a lower cost solar electric ...
Mapel, Jonathan King
Concentrator silicon cell research
This project continued the developments of high-efficiency silicon concentrator solar cells with the goal of achieving a cell efficiency in the 26 to 27 percent range at a concentration level of 150 suns of greater. The target efficiency was achieved with the new PERL (passivated emitter, rear locally diffused) cell structure, but only at low concentration levels around 20 suns. The PERL structure combines oxide passivation of both top and rear surfaces of the cells with small area contact to heavily doped regions on the top and rear surfaces. Efficiency in the 22 to 23 percent range was also demonstrated for large-area concentrator cells fabricated with the buried contact solar cell processing sequence, either when combined with prismatic covers or with other innovative approaches to reduce top contact shadowing. 19 refs.
Green, M.A.; Wenham, S.R.; Zhang, F.; Zhao, J.; Wang, A. [New South Wales Univ., Kensington (Australia). Solar Photovoltaic Lab.
Joined concentric tubes
Tubular objects having two or more concentric layers that have different properties are joined to one another during their manufacture primarily by compressive and friction forces generated by shrinkage during sintering and possibly mechanical interlocking. It is not necessary for the concentric tubes to display adhesive-, chemical- or sinter-bonding to each other in order to achieve a strong bond. This facilitates joining of dissimilar materials, such as ceramics and metals.
DeJonghe, Lutgard; Jacobson, Craig; Tucker, Michael; Visco, Steven
Tracking formulas and strategies for a receiver oriented dual-axis tracking toroidal heliostat
A 4 m x 4 m toroidal heliostat with receiver oriented dual-axis tracking, also called spinning-elevation tracking, was developed as an auxiliary heat source for a hydrogen production system. A series of spinning-elevation tracking formulas have been derived for this heliostat. This included basic tracking formulas, a formula for the elevation angle for heliostat with a mirror-pivot offset, and a more general formula for the biased elevation angle. This paper presents the new tracking formulas in detail and analyzes the accuracy of applying a simplifying approximation. The numerical results show these receiver oriented dual-axis tracking formula approximations are accurate to within 2.5 x 10{sup -6} m in image plane. Some practical tracking strategies are discussed briefly. Solar images from the toroidal heliostat at selected times are also presented. (author)
Guo, Minghuan; Wang, Zhifeng; Liang, Wenfeng; Zhang, Xiliang; Zang, Chuncheng [Key Laboratory of Solar Thermal Energy and Photovoltaic System of Chinese Academy of Sciences, Institute of Electrical Engineering, Beijing 100190 (China); Lu, Zhenwu; Wei, Xiudong [Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences (CAS), Jilin 130033 (China)
Aircraft Workshop Aircraft Workshop 10/14/2008 1 Instrumentation for Unmanned Aircraft Systems (UAS) Fred J. Brechtel, Andy Corless, Chris Marquis, Fred P. Brechtel, Sandeep Rai, Brechtel Mfg. Inc. (email@example.com) Tim Bates & Trish Quinn, Atmospheric Chemistry Group, NOAA PMEL Christian Meinig & Scott Stalin, Engineering Dev. Division, NOAA PMEL Intro & Motivation for the development Introduction to each UAS instrument Other aircraft-deployable systems Power plant plume case study OUTLINE: SBIR Aircraft Workshop 10/14/2008 2 Ambient Aerosols 101: Part 1 Particle Number Concentration Particle Number Concentration 1/cm 3 Particle Diameter (nm) 1 10 100 1000 10 7 10 5 10 3 10 1 10000 Sulfuric Acid Organic Nitrate Carbonaceous Sulfate Sea Salt Mineral Wet Dp Dry Dp Aircraft Workshop 10/14/2008
Bi-iterative least-square method for subspace tracking
schemes for ef?cient subspace tracking,� IEEE Trans. SignalLinebarger, �Subspace tracking�. [11] E. M. Dowling, L. P.angle and frequency tracking,� IEEE Trans. Signal Process. ,
Ouyang, S; Hua, Y
Linear Concentrator System Basics for Concentrating Solar Power...
Solar Power August 20, 2013 - 4:45pm Addthis Photo of numerous parallel rows of parabolic trough collectors tracking the sun. Cooling towers and other generator equipment are...
? ? In response to increasing greenhouse gas levels, climate models project an increase in the amount of water evaporating and precipitating over the Earth � a strengthening of the global hydrologic cycle. ? ? Precipitation is projected to increase in the near-equatorial regions, which tend to be wet in the present climate. ? ? In subtropical land areas� places that are already relatively dry�precipitation is projected to decrease during the 21st century. ? ? Mid-latitude storm track are projected to move poleward along with the poleward edge of the subtropical dry zones. WILL THE WET GET WETTER AND THE DRY DRIER? Warming of the global climate is expected to be accompanied by a reduction in rainfall in the subtropics and an increase in precipitation in subpolar latitudes and some equatorial regions. This pattern can be described in broad terms as the wet getting wetter and the dry getting drier, since subtropical land regions are mostly semi-arid today, while most subpolar regions currently have an excess of precipitation over evaporation. Though clearly a feature of a warming global climate, this characterization of the changing precipitation pattern cannot be applied to every locale, but should instead be thought of as a large-scale tendency that can be modified by local conditions in some cases. As seen in the map below, the drying is projected to be strongest near the poleward margins of the subtropics (for example, South Africa, southern Australia, the Mediterranean, and the south-western U.S.), a pattern that can be described as a poleward expansion of these semi-arid zones. This large-scale pattern of change is a robust feature present in nearly all of the simulations conducted by the world's climate modeling groups for the 4th Assessment of the
unknown authors
A 3D front tracking method on a CPU/GPU system
We describe the method to port a sequential 3D interface tracking code to a GPU with CUDA. The interface is represented as a triangular mesh. Interface geometry properties and point propagation are performed on a GPU. Interface mesh adaptation is performed on a CPU. The convergence of the method is assessed from the test problems with given velocity fields. Performance results show overall speedups from 11 to 14 for the test problems under mesh refinement. We also briefly describe our ongoing work to couple the interface tracking method with a hydro solver.
Bo, Wurigen [Los Alamos National Laboratory; Grove, John [Los Alamos National Laboratory
Statistical modelling of tropical cyclone tracks: a semi-parametric model for the mean trajectory
We present a statistical model for the unconditional mean tracks of hurricanes. Our model is a semi-parametric scheme that averages together observed hurricane displacements. It has a single parameter that defines the averaging length scale, and we derive the optimum value for this parameter using a jackknife. The main purpose of this model is as a starting point for developing a statistical model of hurricanes for use in the estimation of the wind, rainfall and flooding risks. The model also acts as an optimal filtering tool for estimating mean hurricane tracks.
Hall, T; Hall, Tim; Jewson, Stephen
Conard Stair Conard Stair Enforcement Program Manager B&W Y-12 March 2012 Enforcement Coordination Working Group Spring 2012 Meeting Y-12 Approach to Enforcement Y-12 Enforcement Program Office (EPO) * Integrated program with a single point of contact for enforcement activities for radiological protection, worker safety and health, and classified information security * Proceduralized and automated process that provides consistent documentation of compliance determinations and reporting * Uses a decentralized approach with Line Management Price- Anderson Officers (LMPOs) assisted by a cadre of subject matter experts to perform screening determinations * Provides policy, direction, guidance, and independent oversight * Serves as chief technical advisor to senior leadership team on
Photovoltaic concentrator application experiment to be located at Sea World Park, Orlando, Florida. Phase I. System Design. Final report, June 1, 1978-February 28, 1979
The General Electric/Sea World Photovoltaic Concentrator Application Experiment will be located at Sea World's Marine Park near Orlando, Florida. The experiment will consist of nine azimuth-tracking turntable arrays, each containing twenty-four elevation-tracking parabolic trough PV concentrators of a type developed on this contract. The system will produce a peak power output of 330 kW and an annual net electrical energy of 355 MWh corresponding to an annual direct normal insolation of 1375.5 kWh/m/sup 2/. A line-commutated DC/AC inverter controlled to operate at the solar array maximum power point will deliver three-phase power through a bidirectional transformer to a 13-kilovolt line serving the Sea World Park. In addition to generating electrical power, the system will produce 3.56 x 10/sup 5/ ton-hours of cooling for air conditioning a nearby shark exhibit by supplying collected thermal energy to a lithium-bromide absorption chiller. With credit included for the amount of electricity that would be required to produce this cooling by a vapor compression cycle, the overall system efficiency is estimated to be 11.7 percent.
Kirpich, A.S.
ORO Verification of Employment Tracking System(VETS) PIA, Oak...
Verification of Employment Tracking System(VETS) PIA, Oak ridge Operations Office ORO Verification of Employment Tracking System(VETS) PIA, Oak ridge Operations Office ORO...
Enhancements to System for Tracking Radioactive Waste Shipments...
Enhancements to System for Tracking Radioactive Waste Shipments Benefit Multiple Users Enhancements to System for Tracking Radioactive Waste Shipments Benefit Multiple Users...
ORO Office Safeguards and Security Clearance Tracking System...
Office Safeguards and Security Clearance Tracking System and Visitor Control System PIA, Oak Ridge Operations Office ORO Office Safeguards and Security Clearance Tracking System...
Sandia Sled Track PNOV Press Release | Department of Energy
Sandia Sled Track PNOV Press Release Sandia Sled Track PNOV Press Release On October 18, 2010, the National Nuclear Security Administration (NNSA) issued a Preliminary Notice of...
An Investigation of Instantaneous Diffusion and Concentration Fluctuations
Instantaneous plume behavior is investigated via experimental and modeling results from a recent field campaign. The data consist of wind velocity and concentration measurements collected 700 m from a point source of sulfur hexafluoride during ...
Holly Peterson; Brian Lamb
A study on the effect of inlet turbulence on gas mixing for single point aerosol sampling
The efficiency of certain mixing elements in achieving conditions suited for single point sampling is evaluated. Experimental measurements of velocity and tracer gas concentration are taken to determine the same. Readings are taken under conditions of statistically steady developing flow in a straight duct. Mixing is evaluated for inlet intensities of 1.5%, 10% and 20%, achieved by introducing various bi-plane grids and for a commercial static gas mixer. Reynolds number is varied between 5000 and 16000 and has negligible effect on mixing. The obtained data highlighted the importance of inlet turbulence intensity over Reynolds number in the process of turbulent dispersion of a dilute gas. All mixing data are obtained for Reynolds number around 15000. A semi-empirical correlation to predict the extent of mixing, as characterized by the Coefficient of Variation (COV) over a U.S. EPA sampling grid, with a given turbulent intensity profile is proposed and its results match favorably with the data. The correlation incorporates the idea of a history of intensity influencing the mixing at any downstream point and is much better than an earlier correlation which failed to incorporate the history of fluctuations. It could be included as a sub-model in software like DEPOSITION. Experiments with the commercial static gas mixer show that, unlike the bi-plane grids, the turbulence downstream of the mixer is not homogenous. The results showed enhanced mixing that attained the specified ANSI N13.1 1999 criteria rapidly and selection of the release point for tracer gas plays a significant role in determining the extent of mixing. The gas mixer does not introduce significant pressure losses. It is also seen that while flow straighteners reduce flow swirl, they may not be effective for achieving a uniform velocity profile. Numerical computations are performed with commercially available computational fluid dynamics (CFD) software (FLUENT[], Version 5.4), and the performance of the turbulence and particle tracking models is evaluated. Flow field predictions match favorably with experimental data. Results from the particle-tracking model show good qualitative trends, but they cannot be used to determine compliance with the requirements of the ANSI standard.
Mohan, Anand
A point of order 8
A formula expressing a point of order 8 on an elliptic curve, in terms of the roots of the associated cubic polynomial, is given. Doubling such a point yields a point of order 4 distinct from the well-known points of order 4 given in standard references such as "A course of Modern Analysis" by Whittaker and Watson.
Semjon Adlaj
ARM - Measurement - Aerosol concentration
concentration concentration ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Aerosol concentration A measure of the amount of aerosol particles (e.g. number, mass, volume) per unit volume of air. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AOS : Aerosol Observing System CSPHOT : Cimel Sunphotometer CPC : Condensation Particle Counter IAP : In-situ Aerosol Profiles (Cessna Aerosol Flights) TDMA : Tandem Differential Mobility Analyzer
Computing: Progress report Computing: Progress report P.N. Ostroumov, B. Mustapha, J. Xu October 24, 2007 2 Main tasks TRACK updates - The TRACKv37 version is in web-site now http://www.phy.anl.gov/atlas/TRACK/Trackv37/ - H-minus stripping (residual gas, static & RF magnetic fields, black- body radiation) is fully incorporated as a Monte-Carlo process - Trajectories of secondary particles produced by an internal target inside a solenoid - New version TRACKv38 includes DTLs,CCLs P-TRACK: is being updated to version v38, is not yet available on web- site Parallel electromagnetic solvers: collaboration with John DeFord (STAR- ANALYST) - Application for STTR Collaboration attempt with SLAC computer simulation group was not successful 3 Objectives of the STTR The development of efficient parallel implementations of thermal
Tracking Rotational Diffusion of Colloidal Clusters
We describe a novel method of tracking the rotational motion of clusters of colloidal particles. Our method utilizes rigid body transfor- mations to determine the rotations of a cluster and extends conventional proven particle tracking techniques in a simple way, thus facilitating the study of rotational dynamics in systems containing or composed of colloidal clusters. We test our method by measuring dynamical properties of simulated Brownian clusters under conditions relevant to microscopy experiments. We then use the technique to track and describe the motions of a real colloidal cluster imaged with confocal microscopy.
Gary L. Hunter; Kazem V. Edmond; Mark T. Elsesser; Eric R. Weeks
Improvements for group delay fringe tracking
Group delay fringe tracking using spectrally-dispersed fringes is suitable for stabilising the optical path difference in ground-based astronomical optical interferometers in low light situations. We discuss the performance of group delay tracking algorithms when the effects of atmospheric dispersion, high-frequency atmospheric temporal phase variations, non-ideal path modulation, non-ideal spectral sampling, and the detection artifacts introduced by electron-multiplying CCDs (EMCCDs) are taken into account, and we present ways in which the tracking capability can be optimised in the presence of these effects.
A. G. Basden; D. F. Buscher
Dynamic aperture (DA) optimization with direct particle tracking is a straight forward approach when the computing power is permitted. It can have various realistic errors included and is more close than theoretical estimations. In this approach, a fast and parallel tracking code could be very helpful. In this presentation, we describe an implementation of storage ring particle tracking code TESLA for beam dynamics optimization. It supports MPI based parallel computing and is robust as DA calculation engine. This code has been used in the NSLS-II dynamics optimizations and obtained promising performance.
Yang, L.
50 kWp Photovoltaic Concentrator Application Experiment, Phase I. Final report, 1 June 1978-28 February 1979
This program consists of a design study and component development for an experimental 50-kWp photovoltaic concentrator system to supply power to the San Ramon substation of the Pacific Gas and Electric Company. The photovoltaic system is optimized to produce peaking power to relieve the air conditioning load on the PG and E system during summer afternoons; and would therefore displace oil-fired power generation capacity. No electrical storage is required. The experiment would use GaAs concentrator cells with point-focus fresnel lenses operating at 400X, in independent tracking arrays of 440 cells each, generating 3.8 kWp. Fourteen arrays, each 9 feet by 33 feet, are connected electrically in series to generate the 50 kWp. The high conversion efficiency possible with GaAs concentrator cells results in a projected annual average system efficiency (AC electric power output to sunlight input) of better than 15%. The capability of GaAs cells for high temperature operation made possible the design of a total energy option, whereby thermal power from selected arrays could be used to heat and cool the control center for the installation. System design and analysis, fabrication and installation, environmental assessment, and cost projections are described in detail. (WHK)
Maget, H.J.R.
Microsoft PowerPoint - Proceedings Cover Sheets
Optimum pressure and concentration of CO Optimum pressure and concentration of CO 2 in flue gases for CO 2 capture by antisublimation May 8-11, 2006 * Hilton Alexandria Mark Center * Alexandria, Virginia D. Clodic, M. Younes, Alain Bill Outline * Anti-sublimation CO 2 capture system * Flue gases CO 2 concentration sensitivity analysis * Flue gases pressure sensitivity analysis * High Pressure Flue Gases * Conclusions 2 Anti-sublimation CO 2 capture system * CO 2 capture system based on the CO 2 physical properties * CO 2 triple point is at -56.5 C, 520 kPa, below these temperature and pressure CO 2 is either in gas or solid phase. No liquid. * The CO 2 solid phase requires a defrosting process at a pressure higher then 520 kPa thus a swing process is necessary for continuous operation. 3 A B C D E A' CO 2 capture system on the T-s diagram
Customer Acceptance of Smart Grid Customer Acceptance of Smart Grid DOE Energy Advisory Committee Meeting June 6, 2013 Judith Schwartz, To the Point + INNOVATORS EARLY ADOPTERS EARLY MAJORITY LATE MAJORITY LATE ADOPTERS Indifferents Tech Enthusiasts Green Altruists Comfort Lovers Cost Conscious Doubters Green buildings Simple feedback interface Price incentives Seamless automation Who Are Our Customers? + Why Will They Care About SG? 1. Information, incentives, and automation to easily reduce or defer electricity use 2. Integrate clean generation and transportation 3. Reduce, pinpoint, and restore outages + Fly Under the Radar Active Engagement Slow Build Back end deployment first in sequence AMI rollout in process or pilots are imminent Practice incremental modernization efforts High % of "indifferent"
John Nangle, National Renewable Energy Laboratory (NREL) John Nangle, National Renewable Energy Laboratory (NREL) Tribal Leader Forum, Phoenix, AZ - May 30 - 31, 2013 State Incentives and Project Impacts Main Points - Market Context * State Renewable Portfolio Standards (RPS) - What are they? - How can they help your project? - Potential gap means more market demand for RE projects Starting a Renewable Energy Project * What renewable resources exist? * What sites with resources do you own? * To whom will you sell the electricity? * How will federal and state incentives or policies impact your project? * Access to transmission * Other policies - Interconnection standards - Environmental standards Renewable Portfolio Standard (RPS) * A requirement set by a state for utilities to generate x% of electricity from renewables by a specific date
Novel Electron-Bubble Tracking Detectors
Our Columbia group, in collaboration with Brookhaven and SMU, has been carrying out R&D on tracking detectors in cryogenic liquids, including neon and helium. A cryostat purchased by this Grant capable of working temperatures down to 1 K and pressures above the critical point of neon and helium has been operated with a variety of noble fluids. Gaseous Electron Multipliers (GEM) with hydrogen additives have been operated with tracks of radioactive sources read out both by electrical charge detecting electronics, and an optical camera purchased by this Grant, measuring mobility, charge yield, transitions through phase boundaries, gain limitations, and other properties. The goal is very high resolution in large volumes. The scope of the project is the provision of a high performance camera and its installation in a cryogenic facility providing pressure up to 40 atmospheres and a temperature from ambient down to about 1 K. In this section we will address the goals and results having to do with this project and particularly the performance of the camera, and provide a summary of the status of the detector project. The technical development of digital cameras has been dominated for the last forty years by the Charge-Coupled Device technology (CCD). This allows photon recording on very small pixels on silicon planes that provide high quantum efficiency in the visible spectrum, recording the charge generated by a single photon stored on one pixel with an area of order ten microns square. The area can be up to several centimeters squared, containing a million pixels or more. The stores charge is usually read out by manipulating voltage biases to shift the charge in each pixel over to the next, and eventually out of the array and sent to an external processor and memory. Mass production has brought the cost per channel down to very small values and allowed cameras to be integrated to many consumer products. Thermal noise becomes larger than one photon on a single pixel at good temperature, and demand night vision and other demanding applications has led to intense R&D over the years, and small coolers that maintain the CCD at temperatures of more than 100K below ambient are integrated into the camera package. These systems are sold in quantity to amateur astronomers with the same silicon devices used in professional systems, provided long exposure times with less than one electron noise per pixel. In our particle readout, we are imaging a three-dimensional track drifting into the readout plane over time, and we need to read out one plane after another, and we need a high rate of pixel processing. For many years, the noise in the electronic amplifier matching the CCD to the external electronics led to noise levels of many electrons, much higher than in the CCD itself. A break-through was made by providing signal gain inside the CCD, connecting to the external line, by a Electron Multiplier CCD, using a number of electron avalanche stages, each with a small, stable gain. This device was brought out just before out application for the present Grant, provided the last link in the development chain, which allowed out optical readout concept to be implemented at reason fact. In fact, we profited from the falling cost by delaying our order for about a year, which, together with the university discount, allowed us to proceed within our budget. The camera we purchase from the firm ANDOR, which introduced the technique, comes with an extensive suite of software that allows the fast readout with different integration times, and makes a very convenient use in our application. We have been able to make images of the light signals coming from out GEM electron avalanche detectors under many conditions, with tracks of different particle types. We have reconfigured the system a number of times, using the results from the camera to learn how to change the TPC drift geometry and the GEM charge amplifier to improve performance, a process that is still going on. The camera purchase with this Grant has performed reliably and just as specified b
Willis, William J.
A compound parabolic concentrator
A compound parabolic concentrator (CPC) for solar energy applications is presented in this work. A prototype was built and its thermal performance was determined. Operating temperatures of the order of 150 /sup 0/C with a reasonable efficiency can be attained by means of a fixed CPC.
Manrique, J.A.
Industrial solar breeder project using concentrator photovoltaics
The purpose of this program is to demonstrate the use of a concentrating photovoltaic system to provide the energy for operating a silicon solar cell production facility, i.e., to demonstrate a solar breeder. Solarex has proposed to conduct the first real test of the solar breeder concept by building and operating a 200 kW(e) (peak) concentrating photovoltaic system based on the prototype and system design developed during Phase I. This system will provide all of the electrical and thermal energy required to operate a solar cell production line. This demonstration would be conducted at the Solarex Rockville facility, with the photovoltaic array located over the company parking lot and on an otherwise unusable flood plain. Phase I of this program included a comprehensive analysis of the application, prototype fabrication and evaluation, system design and specification, and a detailed plan for Phases II and III. A number of prototype tracking concentrator solar collectors were constructed and operated. Extensive system analysis was performed to design the Phase II system as a stand-alone power supply for a solar cell production line. Finally, a detailed system fabrication proposal for Phase II and an operation and evaluation plan for Phase III were completed. These proposals included technical, management, and cost plans for the fabrication and exercise of the proposed system.
Hamilton, R.; Wohlgemuth, J.; Burkholder, J.; Levine, A.; Storti, G.; Wrigley, C.; McKegg, A.
Maximum power point tracking and optimal Li-ion battery charging control for photovoltaic charging system
Due to the severity of the global energy crisis and environmental pollution, the photovoltaic (PV) system has become one kind of important renewable energy source. Solar energy has the advantages of maximum reserve, inexhaustibleness, and is free from ... Keywords: Genetic algorithms (GA), Photovoltaic (PV), Variable Step Size Incremental Conductance method
Her-Terng Yau; Qin-Cheng Liang; Chin-Tsung Hsieh
Microsoft PowerPoint - Tracking the Sun VI Briefing.pptx
Project overview Objective: Using project-level data, describe and analyze trends in the installed price of grid-connected PV systems in the United States: * Total...
END POINTS MANAGEMENT End Points Management The Need for End Point Specifications
MANAGEMENT MANAGEMENT End Points Management The Need for End Point Specifications The Need for a Method to Derive End Points Guiding Principles for Specifying End Points Tailored Approach Headquarters, Field Office, and Contractor Roles End Points Approvals Contractor Organization Functions for End Points Implementation Training and Walkdown Guidance for the Facility Engineers The Need for End Point Specifications The policy of the EM is that a formal project management approach be used for the planning, managing, and conducting of its projects. A fundamental premise of project management for facility deactivation is answering the question: How do you know when the project is complete? Just as the design specifications are essential to a
Driving Efficiencies Track | Department of Energy
Driving Efficiencies Track Driving Efficiencies Track Driving Efficiencies Track Driving Efficiencies Track Tuesday April 17, 2012 From E-Mail to "The Stream" by Don Burke Taking Records Inventory Into the 21st Century by Lorie A. Robb Engineering and Operations Control: Embrace the Culture by Cheryl Bolen IT Project Management Framework by Denise Hill Wednesday April 18, 2012 Records Warehouse Operations and Records Storage for External Customers by Karen Hatch Preservation of Long-Term Temporary Records by Jeanie Gueretta Mobile Initiatives Effecting Change at Hanford by Don Stewart DOE's CIO's EWA by Sarah Gamage, Don Schade and Alan Andon Green IT 2012: Sustainable Electronics by Edwin Luevanos and Jeff Eagan Thursday April 19, 2012 Document Management and Control System by Melissa Ruth
Turkey Track Wind Farm | Open Energy Information
Track Wind Farm Track Wind Farm Jump to: navigation, search Name Turkey Track Wind Farm Facility Turkey Track Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner CanTex Energy Developer Wind Tex Energy LP Location Nolan TX Coordinates 32.23182529°, -100.043478° 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":32.23182529,"lon":-100.043478,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}
Evolution of the Tracking Code PLACET
The tracking code PLACET simulates beam transport and orbit corrections in linear accelerators. It incorporates single- and multi-bunch effects, static and dynamic imperfections. A major restructuring of its core has resulted in an improvement in its modularity, with some immediate advantages: its tracking core, which is one of the fastest available for this kind of simulations, is now interfaced toward three different scripting languages to further expand its simulation capabilities: Tcl/Tk, Octave, and Python. These three languages provide access to a vast and diverse library of scientific tools, mechanisms for parallel computing, and access to Java interfaces for control systems. Also, several new functionalities have been added to the PLACET core itself: parallel tracking to exploit modern multicore CPUs and clusters of computers, the possibility to track through the interaction region in presence of external magnetic fields (detector solenoid) and higher order imperfections in magnets. PLACET is currentl...
Latina, A; Schulte, D; Snuverink, J
Spin tracking in RHIC (Code Spink)
The evolution of the spin during acceleration in the Relativistic Heavy Ion Collider (RHIC) has been studied with a new numerical code, Spink. Results of spin tracking through resonances are shown.
Luccio, A.U.
Robust adaptive subspace extraction for DOA tracking
This paper addresses the problem of extracting a time-varying signal subspace from noisy signal measurements for direction-of-arrival (DOA) estimation and tracking. A robust adaptive method for extracting the signal subspace is developed based on robust ...
Dekun Yang; S. J. Flockton
Tracking Algorithm for Multi- Dimensional Array Transposition
He, SC2002 1 MPI and OpenMP Paradigms on Cluster of SMP Architectures: the Vacancy Tracking Algorithm for Multi- Dimensional Array Transposition Yun (Helen) He and Chris Ding...
Feature Tracking on the Unit Sphere
Techniques used in a previous study of the objective identification and tracking of meteorological features in model data are extended to the unit sphere. An alternative feature detection scheme is described based on cubic interpolation for the ...
Vehicle and Person Tracking in Aerial Videos
This paper presents two tracking approaches from Sarnoff Corporation to detect moving vehicles and person in the videos taken from aerial platform or plane. In the first approach, we combine layer segmentation approach with background stabilization and ...
Jiangjian Xiao; Changjiang Yang; Feng Han; Hui Cheng
On Cyclonic Tracks over the Eastern Mediterranean
In this study, an updated and extended climatology of cyclonic tracks affecting the eastern Mediterranean region is presented, in order to better understand the Mediterranean climate and its changes. This climatology includes intermonthly ...
Helena A. Flocas; Ian Simmonds; John Kouroutzoglou; Kevin Keay; Maria Hatzaki; Vicky Bricolas; Demosthenes Asimakopoulos
TRUSS: Tracking Risk with Ubiquitous Smart Sensing
We present TRUSS, or Tracking Risk with Ubiquitous Smart Sensing, a novel system that infers and renders safety context on construction sites by fusing data from wearable devices, distributed sensing infrastructure, and ...
Dublon, Gershon
HCI gesture tracking using wearable passive tags
In this thesis. a wearable system is developed to track hand gestures with passive RFID sensor tags. This system was composed of an ultra-high frequency reader and small, passive, finger-worn tags powered by scavenged RFID ...
Bainbridge, Rachel M
The Monterey Area Ship Track Experiment
In June 1994 the Monterey Area Ship Track (MAST) experiment was conducted off the coast of California to investigate the processes behind anthropogenic modification of cloud albedo. The motivation for the MAST experiment is described here, as ...
Philip A. Durkee; Kevin J. Noone; Robert T. Bluth
Laser tracks in rainbow films on water
It is found that narrow non-diverging laser tracks, earlier studied in free soap films, can also arise in thin rainbow films, e.g., of petrol, on water. (laser applications and other topics in quantum electronics)
Startsev, Aleksandr V; Stoilov, Yurii Yu [P N Lebedev Physical Institute, Russian Academy of Sciences, Moscow (Russian Federation)
New Web Service Tracks Foreign Tech Regulations
New Web Service Tracks Foreign Tech Regulations. ... To learn more�and to sign up�go to the Notify US Web site at www.nist.gov/notifyus.
Tracking with the EM Contour Algorithm
A novel active-contour method is presented and applied to pose refinement and tracking. The main innovation is that no "features" are detected at any stage: contours are simply assumed to remove statistical dependencies between pixels on opposite sides ...
A. E. C. Pece; Anthony D. Worrall
DataTrends Water Use Tracking
Use Tracking Use Tracking Organizations across the country are measuring and tracking the water use of over 50,000 buildings using the U.S. Environmental Protection Agency's (EPA) ENERGY STAR Portfolio Manager. These buildings represent close to 20% of all buildings in Portfolio Manager. EPA has prepared the DataTrends series to examine trends in energy and water consumption in Portfolio Manager. This document presents the general trends seen in the water data. To learn more, visit www.energystar.gov/DataTrends. Many different types of organizations are tracking water consumption in a wide variety of buildings located in all 50 states. The most common types of buildings with water data are
Testing Objectives Testing Objectives * Qualitatively demonstrate leaching and ultrafiltration processes, equipment design and process control strategies * Obtain data to improve process model projections for leaching and ultrafiltration - Develop scaling factors to form link between laboratory-scale and engineering-scale test results Process Flowsheets * Baseline: caustic leaching in UF feed preparation vessels - Caustic added directly to as-received feed (3-8 wt% solids) * Alternative: caustic leaching in UF feed vessel - Caustic added after initial solids concentration to 20 wt% * All other process steps conducted in the UF feed vessels. PEP Flow Diagram Scaling Considerations * 1/4.5-scale facility: linear dimensions * PJM mixing - Newtonian slurry: power/volume - Non-newtonian: plant velocity
Radar Simulator: A Tool for comparison of modeled and observed clouds Radar Simulator: A Tool for comparison of modeled and observed clouds and precipitation at the ARM Climate Research Facilities 3. ARM Radar Simulator: Purpose Alleviate uncertainties related to the retrieval process, Because the forward model can be described much more accurately than the inversion process, which always involves certain assumptions. Take full advantage of the information content of multi- parametric Doppler radar observations rather than a few retrieved parameters such as cloud boundaries and LWP. Use as engineering/feasibility tool for the development of future ARM radar observing systems. 6. ARM Radar Simulator: Output Profiling MMCR/WACR Reflectivity Z size, concentration Mean Doppler Velocity V size Spectrum Width σ distribution width
Impact and abatement of siloxanes in the Bucklin Point WWTF anaerobic digestion process.
?? The biogas produced at the Bucklin Point Wastewater Treatment Facility contained a high concentration of siloxane compounds. A manufacturer of personal care products was� (more)
Wenskowicz, Barry
Development and testing of Parabolic Dish Concentrator No. 1
Parabolic Dish Concentrator No. 1 (PDC-1) is a 12-m-diameter prototype concentrator that evolved from a six-year effort to produce a unit with low life-cycle costs for use with thermal-to-electric energy conversion devices. The concentrator assembly features panels made of a resin transfer molded balsa core/fiberglass sandwich with plastic reflective film as the reflective surface and a ribbed framework to hold the panels in place. The concentrator assembly tracks in azimuth and elevation on a base frame riding on a circular track. In 1982, PDC-1 was installed at the Jet Propulsion Laboratory's Parabolic Dish Test Site at Edwards Air Force Base, California. Initial optical testing showed that the panels did not exhibit the proper parabolic contour. After reassembly to correct this problem, further optical testing discovered thermal gradients in the panels with daily temperature changes. In spite of this, PDC-1 has sufficient optical quality to operate satisfactorily in a dish-electric system. With suggested improvements, its performance could be increased. The PDC-1 development effort provided the impetus for creating innovative optical testing methods and also provided valuable information for use in designing and fabricating concentrators of future dish-electric systems.
Dennison, E.W.; Thostesen, T.O.
Solar tracking control system Sun Chaser
The solar tracking control system (Sun Chaser) is believed to be an improved method of tracking the Sun in all types of weather conditions. The Sun Chaser will follow the Sun from east to west in clear or cloudy weather, and reset itself to the east position after sundown in readiness for the next sunrise. A description of the Sun Chaser hardware and its operation together with results is presented.
Scott, D.R.; White, P.R.
Solar Tracking Control System Sun Chaser
The solar tracking control system (''Sun Chaser'') is believed to be an improved method of tracking the Sun in all types of weather conditions. The Sun Chaser will follow the Sun from east to west in clear or cloudy weather, and reset itself to the east position after sundown in readiness for the next sunrise. A description of the Sun Chaser hardware and its operation together with results is presented.
Spin Rotation of Formalism for Spin Tracking
The problem of which coefficients are adequate to correctly represent the spin rotation in vector spin tracking for polarized proton and deuteron beams in synchrotrons is here re-examined in the light of recent discussions. The main aim of this note is to show where some previous erroneous results originated and how to code spin rotation in a tracking code. Some analysis of a recent experiment is presented that confirm the correctness of the assumptions.
Decontamination & Decommissioning Equipment Tracking System (DDETS)
At the request of the Department of Energy (DOE)(EM-50), the Scientific Computing Unit developed a prototype system to track information and data relevant to equipment and tooling removed during decontamination and decommissioning activities. The DDETS proof-of-concept tracking system utilizes a one-dimensional (1D) and two-dimensional (2D) bar coding technology to retain and track information such as identification number, manufacturer, requisition information, and various contaminant information, etc. The information is encoded in a bar code, printed on a label and can be attached to corresponding equipment. The DDETS was developed using a proven relational database management system which allows the addition, modification, printing, and deletion of data. In addition, communication interfaces with bar code printers and bar code readers were developed. Additional features of the system include: (a) Four different reports available for the user (REAPS, transaction, and two inventory), (b) Remote automated inventory tracking capabilities, (c) Remote automated inventory tracking capability (2D bar codes allow equipment to be scanned/tracked without being linked to the DDETS database), (d) Edit, update, delete, and query capabilities, (e) On-line bar code label printing utility (data from 2D bar codes can be scanned directly into the data base simplifying data entry), and (f) Automated data backup utility. Compatibility with the Reportable Excess Automated Property System (REAPS) to upload data from DDETS is planned.
Cook, S.
reflector; c) Plane receiver with plane reflector; d) parabolic concentrator; e) Fresnel reflector f) Array that are faced at different angles so that light falling on any ring is focused to the same point. Parabolic trough collector: A high-temperature (above 360K) solar thermal concentrator with the capacity
Comparison of stochastic filtering methods for 3D tracking
In the recent years, the 3D visual research has gained momentum with publications appearing for all aspects of 3D including visual tracking. This paper presents a review of the literature published for 3D visual tracking over the past five years. The ... Keywords: 3D tracking, Articulated object tracking, Condensation algorithm, Kalman filter, Motion cue, Particle filter
Yasir Salih; Aamir Saeed Malik
Medical Records Retrieval Track results � University Of Utah
Page 1. Medical Records Retrieval Track results � University Of Utah Summary Statistics Run ID BMIUOUens Prcessing ...
Multimodal Person Tracking and Attention Classification Marek P. Michalowski
The problems of human detection, tracking, and attention recognition can be solved more effectively tracking of humans by a laser scanner with de- tected and tracked faces from a vision system. 2. SYSTEMMultimodal Person Tracking and Attention Classification Marek P. Michalowski Carnegie Mellon
Simmons, Reid
Derived Concentration Technical Standard
196-2011 196-2011 April 2011 DOE STANDARD DERIVED CONCENTRATION TECHNICAL STANDARD U.S. Department of Energy AREA ENVR Washington, D.C. 20585 Not Measurement Sensitive This document is available on the Department of Energy Technical Standards Program Web Site at http://www.hss.doe.gov/nuclearsafety/ns/techstds/standard/standard.html DOE-STD-1196-2011 ACKNOWLEDGEMENTS This Derived Concentration Technical Standard was a collaborative effort sponsored by the DOE Office of Environmental Policy and Assistance, with support from Department subject matter experts (SMEs) in the field of radiation protection. This standard, which complements DOE Order (O) 458.1, Radiation Protection of the Public and the Environment, was developed taking
Concentrating Solar Thermal Technology
After nearly 20 years of commercial dormancy, concentrating solar thermal (CST) power development and investment activity is heating up globally. Encouraged by volatile energy prices, carbon markets, and renewable-friendly policies, an increasing number of established companies, newcomers, utilities, and government agencies are planning to deploy CST systems to tap the technologies' improving conversion efficiencies and low-cost electricity production potential. This renewable energy technology perspecti...
Indirect Effect on Rainfall Indirect Effect on Rainfall at SGP Site Feng Niu Advisor: Zhangqing Li 03/30/2009 Rainfall Frequency y = - 0.0012x + 0.0134 R 2 = 0.9336 y = 0.0335x + 0.2043 R 2 = 0.6529 y = 0.0009x + 0.0536 R 2 = 0.0021 0.00% 5.00% 10.00% 15.00% 20.00% 25.00% 30.00% 35.00% 40.00% 45.00% 0- 1000 1000- 2000 2000- 3000 3000- 4000 4000- 5000 5000- 6000 Aero so l Number Co nc entratio n (/ c m3) Ra inf a ll Freq uenc y 0.00% 0.20% 0.40% 0.60% 0.80% 1.00% 1.20% 1.40% LWP: >0.8mm LWP:0.4- 0.8mm LWP:0- 0.4mm Linear (LWP:0- 0.4mm) Linear (LWP: >0.8mm) Linear (LWP:0.4- 0.8mm) Main Factors Affecting Rainfall Rainfall frequency Water vapor Atm stability Aerosols 10 11 12 13 14 15 16 17 18 19 0-1000 1000- 2000 2000- 3000 3000- 4000 4000- 5000 5000- 6000 Aerosol Number Concentration (per cm^3) Surface temperature (Degree Celsius) LWP:>0.8mm LWP:0.4-0.8mm LWP:0.0-0.4mm
Three-dimensional null point reconnection regimes
Recent advances in theory and computational experiments have shown the need to refine the previous categorization of magnetic reconnection at three-dimensional null points--points at which the magnetic field vanishes. We propose here a division into three different types, depending on the nature of the flow near the spine and fan of the null. The spine is an isolated field line which approaches the null (or recedes from it), while the fan is a surface of field lines which recede from it (or approach it). So-called torsional spine reconnection occurs when field lines in the vicinity of the fan rotate, with current becoming concentrated along the spine so that nearby field lines undergo rotational slippage. In torsional fan reconnection field lines near the spine rotate and create a current that is concentrated in the fan with a rotational flux mismatch and rotational slippage. In both of these regimes, the spine and fan are perpendicular and there is no flux transfer across spine or fan. The third regime, called spine-fan reconnection, is the most common in practice and combines elements of the previous spine and fan models. In this case, in response to a generic shearing motion, the null point collapses to form a current sheet that is focused at the null itself, in a sheet that locally spans both the spine and fan. In this regime the spine and fan are no longer perpendicular and there is flux transfer across both of them.
Priest, E. R. [Mathematics Institute, St. Andrews University, St. Andrews KY16 9SS (United Kingdom); Pontin, D. I. [Division of Mathematics, University of Dundee, Dundee DD1 4HN (United Kingdom)
On Convex Decompositions of Points
Given a planar point set in general position, S, we seek a partition of the points into convex cells, such that the union of the cells forms a simple polygon, P, and every point from S is on the boundary of P. Let f(S) ...
Kiyoshi Hosono; David Rappaport; Masatsugu Urabe
Low-Cost, Lightweight Solar Concentrators
Concentrators Concentrators California Institute of Technology/Jet Propulsion Laboratory Award Number:0595-1612 | April 18, 2013 | Ganapathi * Mirror module development has been approached with the goal of being applicable to all types of CSP systems * Several heliostat design options being considered to address driving requirements: * Facets that are compliant to winds > 35 mph * Deep structures for optimizing structural efficiency * Pointing accuracy achieved with mechanism design * Simple precision components * Easy on-site assembly with pre-fab components * Structural foam properties and strengthening trades being conducted to reduce overall costs with FEM models Goal: Typical costs for a concentrator (heliostat or parabolic dish) can range between 40-50% of the total costs. To meet SunShot
Method and apparatus for automatically tracking a workpiece surface. [Patents
Laser cutting concepts and apparatus have been developed for cutting the shroud of the core fuel subassemblies. However, much care must be taken in the accuracy of the cutting since the fuel rods within the shroud often become warped and are forced into direct contact with the shroud in random regions. Thus, in order to cut the nuclear fuel rod shroud accurately so as not to puncture the cladding of the fuel rods, and to insure optimal cutting efficiency and performance, the focal point of beam need be maintained accurately at the workpiece surface. It becomes necessary to detect deviations in the level of the workpiece surface accurately in connection with the cutting process. Therefore, a method and apparatus for tracking the surface of a workpiece being cut by a laser beam coming from a focus head assembly is disclosed which includes two collimated laser beams directed onto the work-piece surface at spaced points by beam directing optics in generally parallel planes of incidence. A shift in spacing between the two points is detected by means of a video camera system and processed by a computer to yield a workpiece surface displacement signal which is input to a motor which raises or lowers the beam focus head accordingly.
Efficient Solar Concentrators: Affordable Energy from Water and Sunlight
Broad Funding Opportunity Announcement Project: Teledyne is developing a liquid prism panel that tracks the position of the sun to help efficiently concentrate its light onto a solar cell to produce power. Typically, solar tracking devices have bulky and expensive mechanical moving parts that require a lot of power and are often unreliable. Teledyne�s liquid prism panel has no bulky and heavy supporting parts�instead it relies on electrowetting. Electrowetting is a process where an electric field is applied to the liquid to control the angle at which it meets the sunlight above and to control the angle of the sunlight to the focusing lensthe more direct the angle to the focusing lens, the more efficiently the light can be concentrated to solar panels and converted into electricity. This allows the prism to be tuned like a radio to track the sun across the sky and steer sunlight into the solar cell without any moving mechanical parts. This process uses very little power and requires no expensive supporting hardware or moving parts, enabling efficient and quiet rooftop operation for integration into buildings.
MetroTrack: predictive tracking of mobile events using mobile phones
We propose to use mobile phones carried by people in their everyday lives as mobile sensors to track mobile events. We argue that sensor-enabled mobile phones are best suited to deliver sensing services (e.g., tracking in urban areas) than more traditional ...
Gahng-Seop Ahn; Mirco Musolesi; Hong Lu; Reza Olfati-Saber; Andrew T. Campbell
RaceTrack: efficient detection of data race conditions via adaptive tracking
Bugs due to data races in multithreaded programs often exhibit non-deterministic symptoms and are notoriously difficult to find. This paper describes RaceTrack, a dynamic race detection tool that tracks the actions of a program and reports a warning ... Keywords: race detection, virtual machine instrumentation
Yuan Yu; Tom Rodeheffer; Wei Chen
SGCH F 560-ACQ SGCH F 560-ACQ (11/05) Previous editions are obsolete. Chicago Office NEPA Tracking Number U. S. DEPARTMENT OF ENERGY OFFICE OF SCIENCE -- CHICAGO OFFICE NATIONAL ENVIRONMENTAL POLICY ACT (NEPA) ENVIRONMENTAL EVALUATION NOTIFICATION FORM To be completed by "financial assistance award" organization receiving Federal funding. For assistance (including a point of contact), see "Instructions for Preparing SC-CH F-560, Environmental Evaluation Notification Form ". Solicitation/Award No. (if applicable): N/A Organization Name: New Brunswick Laboratory (NBL) Title of Proposed Project/Research: GENERIC CATEGORICAL EXCLUSION (CX) FOR THE NBL: Indoor Bench Scale Research Projects and Conventional Laboratory Operations Total DOE Funding/Total Project Funding:
A method of concentrating N/sup 15/ in a liquid is described. Gaseous nitric oxide and at least one liquid selected from the group consisting of the aqueous oxyacids and oxides of nitrogen, wherein the atomic ratio of oxygen to nitrogen is greater than unity, are brought into intimate contact to cause an enrichment of the liquid and a depletion of the gas in N/sup 15/. The liquid is, thereafter, reacted with sulfur dioxide to produce a gas contuining nitric oxide. The gas contuining nitric oxide is then continuously passed in countercurrent contact with the liquid to cause further enrichment of the liquid.
Taylor, T.I.; Spindel, W.
Concentric Black Rings
We present new supersymmetric solutions of five-dimensional minimal supergravity that describe concentric black rings with an optional black hole at the common centre. Configurations of two black rings are found which have the same conserved charges as a single rotating black hole; these black rings can have a total horizon area less than, equal to, or greater than the black hole with the same charges. A numerical investigation of these particular black ring solutions suggests that they do not have closed timelike curves.
Jerome P. Gauntlett; Jan B. Gutowski
Characterization of Photovoltaic Concentrators
This paper will describe the resources at the National Renewable Energy Laboratory (NREL) for performing characterization of photovoltaic (PV) materials designed for operation under concentrated light. NREL has the capability to measure devices ranging from very small, unencapsulated research cells to reasonably sized, environmentally protected modules. Data gathering and interpretation are also ongoing areas of revision and improvement. The main goal of the current research is to reduce the measurement uncertainty to the lowest practical value. At present, the state of the art is limited at a ?5% level in measuring efficiency accurately.
Kiehl, J.; Emery, E.
Vapor concentration monitor
An apparatus for monitoring the concentration of a vapor, such as heavy water, having at least one narrow bandwidth in its absorption spectrum, in a sample gas such as air. The air is drawn into a chamber in which the vapor content is measured by means of its radiation absorption spectrum. High sensitivity is obtained by modulating the wavelength at a relatively high frequency without changing its optical path, while high stability against zero drift is obtained by the low frequency interchange of the sample gas to be monitored and of a reference sample. The variable HDO background due to natural humidity is automatically corrected.
Bayly, John G. (Deep River, CA); Booth, Ronald J. (Deep River, CA)
Optical analysis of semi and compound hyperbolic spiral solar concentrator
In the last few years, considerable efforts have gone into the developments of non-imaging solar concentrators. They are characterized by their moderate concentration ratios (up to 10) and large angle of acceptance which allows the collection of more diffuse radiation as well as direct beam. They have the advantage of high temperature output of focusing concentrators but without diurnal tracking. The most successful one of such concentrator type is the compound parabolic (CPC) which has been extensively studied by numerous investigators. However, it is idealized for the use with flat absorber which suffers from parasitic rear loss and inefficient evacuation for the suppression of convective loss. It has also an over heating problem due to the concentration of solar radiation upon the surface of the absorber in the focal line. In the way of continuous development of the non-imaging concentrators, the authors present here the design and optical analysis of a compound hyperbolic spiral concentrator (CHSC). Its surface of reflection consists of two identical segments of a hyperbolic spiral curve, arranged symmetrical about an axis of symmetry as given. Its optical characterestics are studied and compared with those of the previously discussed HSC which will be designated as semi hyperbolic spiral concentrator (SHSC).
Rabie, L.H.
Statistical modelling of tropical cyclone tracks: modelling the autocorrelation in track shape
We describe results from the third stage of a project to build a statistical model for hurricane tracks. In the first stage we modelled the unconditional mean track. In the second stage we modelled the unconditional variance of fluctuations around the mean. Now we address the question of how to model the autocorrelations in the standardised fluctuations. We perform a thorough diagnostic analysis of these fluctuations, and fit a type of AR(1) model. We then assess the goodness of fit of this model in a number of ways, including an out-of-sample comparison with a simpler model, an in-sample residual analysis, and a comparison of simulated tracks from the model with the observed tracks. Broadly speaking, the model captures the behaviour of observed hurricane tracks. In detail, however, there are a number of systematic errors.
Optical oxygen concentration monitor
A system for measuring and monitoring the concentration of oxygen uses as a light source an argon discharge lamp, which inherently emits light with a spectral line that is close to one of oxygen's A-band absorption lines. In a preferred embodiment, the argon line is split into sets of components of shorter and longer wavelengths by a magnetic field of approximately 2000 Gauss that is parallel to the light propagation from the lamp. The longer wavelength components are centered on an absorption line of oxygen and thus readily absorbed, and the shorter wavelength components are moved away from that line and minimally absorbed. A polarization modulator alternately selects the set of the longer wavelength, or upshifted, components or the set of the shorter wavelength, or downshifted, components and passes the selected set to an environment of interest. After transmission over a path through that environment, the transmitted optical flux of the argon line varies as a result of the differential absorption. The system then determines the concentration of oxygen in the environment based on the changes in the transmitted optical flux between the two sets of components. In alternative embodiments modulation is achieved by selectively reversing the polarity of the magnetic field or by selectively supplying the magnetic field to either the emitting plasma of the lamp or the environment of interest.
Kebabian, Paul (Acton, MA)
A system for measuring and monitoring the concentration of oxygen uses as a light source an argon discharge lamp, which inherently emits light with a spectral line that is close to one of oxygen`s A-band absorption lines. In a preferred embodiment, the argon line is split into sets of components of shorter and longer wavelengths by a magnetic field of approximately 2,000 Gauss that is parallel to the light propagation from the lamp. The longer wavelength components are centered on an absorption line of oxygen and thus readily absorbed, and the shorter wavelength components are moved away from that line and minimally absorbed. A polarization modulator alternately selects the set of the longer wavelength, or upshifted, components or the set of the shorter wavelength, or downshifted, components and passes the selected set to an environment of interest. After transmission over a path through that environment, the transmitted optical flux of the argon line varies as a result of the differential absorption. The system then determines the concentration of oxygen in the environment based on the changes in the transmitted optical flux between the two sets of components. In alternative embodiments modulation is achieved by selectively reversing the polarity of the magnetic field or by selectively supplying the magnetic field to either the emitting plasma of the lamp or the environment of interest. 4 figs.
Kebabian, P.
Universal solar concentrator panel
This patent describes a solar concentrator device. It comprises: a solar energy receiver; and a flat solar energy reflector arranged to reflect solar energy to the receiver, the reflector including a substantially square-shaped frame limiting an inner space, individual flat reflective panels arranged in the space in a first group or rows extending in a first direction and a second group of rows extending in a second direction substantially transverse to the first direction and so that each of the panels is turnable about three mutually perpendicular axes, and means for mounting the panels so that they are turnable about the axes. The mounting means including first means which connect the panels in the rows extending in one of the directions so that the panels in each of the rows extending in the one direction are jointly turnable about a first one of the axes, second means for mounting each of the panels so that in each of the rows extending in the one direction each of the panels is turnable about a second one of the axes, and third means for mounting each panel in each of the rows extending in the one direction so that each of the panels is turnable about a third one of the axes. This patent also describes a solar concentrator device, wherein the receiver includes a box forming an inner chamber, a plurality of photovoltaic cells sealed with a clear plastic and accommodated in the chamber, and water filling the chamber and surrounding the photovoltaic cells.
Bagno, R.G.
Nonimaging concentrators for solar thermal energy. Final report
A small experimental solar collector test facility has been established on the campus of the University of Chicago. This capability has been used to explore applications of nonimaging optics for solar thermal concentration in three substantially different configurations: (1) a single stage system with moderate concentration on an evacuated absorber (a 5.25X evacuated tube Compound Parabolic Concentrator or CPC), (2) a two stage system with high concentration and a non-evacuated absorber (a 16X Fresnel lens/CPC type mirror) and (3) moderate concentration single stage systems with non-evacuated absorbers for lower temperature (a 3X and a 6.5X CPC). Prototypes of each of these systems have been designed, built and tested. The performance characteristics are presented. In addition a 73 m/sup 2/ experimental array of 3X non-evacuated CPC's has been installed in a school heating system on the Navajo Indian Reservation in New Mexico. The full array has a peak noon time efficiency of approx. 50% at ..delta..T = 50/sup 0/C above ambient and has supplied about half the school's heat load for the past two heating seasons. Several theoretical features of nonimaging concentration have been investigated including their long term energy collecting behavior. The measured performance of the different systems shows clearly that non-tracking concentrators can provide solar thermal energy from moderately high low temperature regimes (> 50/sup 0/C above ambient) up into the mid-temperature region (well above 200/sup 0/C above ambient). The measured efficiency at 220/sup 0/C for the 5.25X CPC was as high or higher than that for any of the commercial tracking systems tested.
Winston, R.
Optimal tracking for pairs of qubit states
In classical control theory, tracking refers to the ability to perform measurements and feedback on a classical system in order to enforce some desired dynamics. In this paper we investigate a simple version of quantum tracking, namely, we look at how to optimally transform the state of a single qubit into a given target state, when the system can be prepared in two different ways, and the target state depends on the choice of preparation. We propose a tracking strategy that is proved to be optimal for any input and target states. Applications in the context of state discrimination, state purification, state stabilization and state-dependent quantum cloning are presented, where existing optimality results are recovered and extended.
Paulo E. M. F. Mendonca; Alexei Gilchrist; Andrew C. Doherty
Automatically processed alpha-track radon monitor
An automatically processed alpha-track radon monitor is provided which includes a housing having an aperture allowing radon entry, and a filter that excludes the entry of radon daughters into the housing. A flexible track registration material is located within the housing that records alpha-particle emissions from the decay of radon and radon daughters inside the housing. The flexible track registration material is capable of being spliced such that the registration material from a plurality of monitors can be spliced into a single strip to facilitate automatic processing of the registration material from the plurality of monitors. A process for the automatic counting of radon registered by a radon monitor is also provided.
Langner, G.H. Jr.
Increasing Scientific Productivity by Tracking Data
Data Tracking Data Tracking Increases Scientific Productivity Data Tracking Increases Scientific Productivity July 20, 2011 | Tags: HPSS, NERSC Linda Vu, firstname.lastname@example.com, +1 510 486 2402 HPSS Storage New supercomputers and networks are contributing to record levels of scientific productivity. In fact, every new system installed at NERSC over the last 10 years has generated about 50 percent more data than its predecessor. To effectively meet the increasing scientific demand for storage systems and services, the center's staff must first understand how data moves within the facility. Until recently, the process of obtaining these insights was extremely tedious because the statistics came from multiple sources, including network router statistics, client and server transfer logs, storage and accounting reports-all saved as very
RE Finance Tracking Initiative | Open Energy Information
RE Finance Tracking Initiative RE Finance Tracking Initiative Jump to: navigation, search Tool Summary Name: RE Finance Tracking Initiative Agency/Company /Organization: NREL Sector: Energy Topics: Finance Resource Type: Dataset User Interface: Website Website: financere.nrel.gov/finance/REFTI Country: United States Cost: Free Northern America Coordinates: 82.014870553805°, -42.046866416931° 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":82.014870553805,"lon":-42.046866416931,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}
WIPP Satellite Tracking System Relocates to Carlsbad
For Immediate Release WIPP Satellite Tracking System Relocates to Carlsbad Carlsbad, N.M., December 7, 2005 - The U.S. Department of Energy's (DOE) Carlsbad Field Office has announced that effective December 2, the DOE Transportation Tracking and Communication System (TRANSCOM) is fully staffed and operational in Carlsbad, N.M. The TRANSCOM system, previously based in Albuquerque, N.M, is used to track transuranic waste shipments to the Waste Isolation Plant (WIPP) near Carlsbad and other DOE nuclear waste shipments nationwide. Security Consultant Group (SCG), operator of the TRANSCOM satellite system, maintains a staff of seven operators in Carlsbad. The new TRANSCOM Communications Center is located at the Skeen-Whitlock Building, where DOE
Survey mirrors and lenses and their required surface accuracy. Volume 2. Concentrator optical performance software (COPS) user's manual. Final report for September 15, 1978-December 1, 1979
The mathematical modeling of 11 different concentrating collectors is documented and instructions are given for use of the computer code. The 11 concentrators modeled are: faceted mirror concentration; fixed mirror, two-axis tracking receiver; parabolic trough collector; linear Fresnel; incremental reflector; inflated cylindrical concentrator; CPC-involute reflector with evacuated receiver; CPC-parabolic/involute reflector; V trough collectors, imaging collapsing concentrator; and parabolic dish collector. (MHR)
Florida Nuclear Profile - Turkey Point
Turkey Point" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License expiration date"...
Monitoring System Used to Identify, Track and Allocate Peak Demand Costs
In 1994, Thomson Consumer Electronics (RCA) purchased a UtiliTRACK� Monitoring System for a plant in Indianapolis, Indiana primarily to allow utility costs to be billed to individual departments within Thomson as well as to outside organizations leasing space on the site. The most common way to distribute monthly electric costs within a facility when consumption by area or department is available through submetering or other means, is to apply the average cost per KWH from the utility bill to the individual consumption figures. Thomson initially used the data from the UtiliTRACK System in this way. As the plant engineer worked with system data on a daily basis and began to develop a much better understanding of the plant's electrical profile, it was clear that the percentage contribution by department or area to the plant's peak demand was not the same as that assigned based solely upon consumption. With a monthly peak exceeding 8 MW and peak demand charges accounting for more than 60% of the monthly electric bill, he realized that to be accurate and fair, costs must be allocated based both on consumption and peak demand. He asked UtiliTRACK to develop a method for tracking and allocating peak demand costs. The resulting software continuously tracks the total plant demand (the sum of 3 utility meters) and records the contribution of each monitored point at the time the peak occurs. The resulting reports and graphs not only enable the owner to accurately allocate peak demand costs but also provide a means for tracking and managing peaks on a continuous basis.
Holmes, W. A.
Photovoltaic concentrator technology development project. Sixth project integration meeting
Thirty-three abstracts and short papers are presented which describe the current status of research, development, and demonstration of concentrator solar cell technology. Solar concentrators discussed include the parabolic trough, linear focus Fresnel lens, point focus Fresnel lens, and the parabolic dish. Solar cells studied include silicon, GaAs, and AlGaAs. Research on multiple junction cells, combined photovoltaic/thermal collectors, back contact solar cells, and beam splitter modules is described. Concentrator solar cell demonstration programs are reported. Contractor status summaries are given for 33 US DOE concentrator solar cell contracts; a description of the project, project status, and key results to date is included. (WHK)
Tracking Studies to Determine the Required Wiggler Aperture for the ILC Damping Rings
Batygin (SLAC). CONCLUSION Tracking studies have shown thatTRACKING STUDIES TO DETERMINE THE REQUIRED WIGGLER APERTUREaperture of the magnet. Tracking studies were done for all
Reichel, I.; Wolski, A.
Travel patterns during pregnancy: comparison between Global Positioning System (GPS) tracking and questionnaire data
Positioning System (GPS) tracking and questionnaire data.Positioning System (GPS) tracking and questionnaire data Juna questionnaire and one-week GPS tracking three times during
Spin Tracking Studies for Beam Polarization Preservation in the NLC Main Damping Rings
with implementing the spin tracking routines in particular.Tech Note-326 Spin-Tracking Studies for Beam Polarizationhave been based on spin tracking particles through the
Wolski, Andrzej; Bates, Daniel
Tracking, Attrition and Data Quality in the Kenyan Life Panel Survey Round 1 (KLPS-1)
Capital Study 2002-04: Tracking, Data Collection, Coverage,and Christian Herrera (2007). �Tracking Migration Acrossand Development Survey 2-Tracking. Retrieved January 2008:
Baird, Sarah; Hamory, Joan; Miguel, Edward
Integrating Geometric, Motion and Appearance Constraints for Robust Tracking in Aerial Videos
Javed, and M. Shah, �Object tracking: A survey,� ACM Journaland trends in visual tracking: A review. � Neurocomputing,Shalon and T. Fortmann, �Tracking and data association. �
Hasan, Mahmudul
Photovoltaic solar concentrator module
This invention consists of a planar photovoltaic concentrator module for producing an electrical signal from incident solar radiation which includes an electrically insulating housing having a front wall, an opposing back wall and a hollow interior. A solar cell having electrical terminals is positioned within the interior of the housing. A planar conductor is connected with a terminal of the solar cell of the same polarity. A lens forming the front wall of the housing is operable to direct solar radiation incident to the lens into the interior of the housing. A refractive optical element in contact with the solar cell and facing the lens receives the solar radiation directed into the interior of the housing by the lens and directs the solar radiation to the solar cell to cause the solar cell to generate an electrical signal. An electrically conductive planar member is positioned in the housing to rest on the housing back wall in supporting relation with the solar cell terminal of opposite polarity. The planar member is operable to dissipate heat radiated by the solar cell as the solar cell generates an electrical signal and further forms a solar cell conductor connected with the solar cell terminal to permit the electrical signal generated by the solar cell to be measured between the planar member and the conductor.
Chiang, C.J.
Effect of variation of angle of inclination on the performance of low-concentration-ratio compound parabolic concentrating solar collectors
Thermal heat transfer in line-axis, symmetric, compound parabolic concentrating solar energy collectors (CPCs) has been investigated and a theoretical numerical model has been developed. The model allows the effect of the angle of axial inclination of an east-west aligned CPC and hence the effect of the latitudinal and tracking configuration of the CPC system on performance to be determined. The internal and external convective heat transfer correlations employed are angular dependent. The variation of convective, radiative, conductive and overall heat transfer coefficients and system efficiency for a range of angular inclinations, concentration ratios, total insolations and beam to diffuse insolation factors are presented graphically. The results demonstrate that there is a 10% variation in convective heat transfer with angle of inclination for low concentration CPCs (i.e. C=1.5). 13 refs., 12 figs., 2 tabs.
A.F. Kothdiwala; Norton, B.; Eames, P.C. [Univ. of Ulster, Antrim (United Kingdom)
Location tracking via social networking sites
The use of social media has steadily grown in recent years, and now more than ever, people are logging on to websites like Facebook, Twitter, Foursquare, and Google Latitude with the aim of broadcasting their location information. The ability to 'check ... Keywords: disclosure, intention, location-based services, location-tracking, social networking, trust
Lisa Thomas; Pam Briggs; Linda Little
PV ENERGY ROI Tracks Efficiency Gains
PV ENERGY ROI Tracks Efficiency Gains the state of PV today E nergy payback time (EPBT) is the time it takes for a photovoltaic (PV) system to produce all the energy used through- out its life cycle. A short EPBT corre- sponds to a high energy return on energy invest- ment
Optical Blade Position Tracking System Test
The Optical Blade Position Tracking System Test measures the blade deflection along the span of the blade using simple off-the-shelf infrared security cameras along with blade-mounted retro-reflective tape and video image processing hardware and software to obtain these measurements.
Fingersh, L. J.
The Savannah River National Laboratory (SRNL) was requested to lead a Law Enforcement Working Group that was formed to collaborate on common operational needs. All agencies represented on the working group ranked their need to tag, track, and locate a witting or unwitting target as their highest priority. Specifically, they were looking for technologies more robust than Global Positioning Satellite (GPS), could communicate back to the owner, and worked where normal cell phone communications did not work or were unreliable. SRNL brought together multiple technologies in a demonstration that was held in in various Alaska venues, including metropolitan, wilderness, and at-sea that met the working group's requirements. Using prototypical technologies from Boeing, On Ramp, and Fortress, SRNL was able to demonstrate the ability to track personnel and material in all scenarios including indoors, in heavily wooden areas, canyons, and in parking garages. In all cases GPS signals were too weak to measure. Bi-directional communication was achieved in areas that Wi-Fi, cell towers, or traditional radios would not perform. The results of the exercise will be presented. These technologies are considered ideal for tracking high value material such has nuclear material with a platform that allows seamless tracking anywhere in the world, indoors or outdoors.
Cordaro, J.; Coleman, T.; Shull, D.
Predicting nucleosome positioning using multiple evidence tracks
We describe a probabilistic model, implemented as a dynamic Bayesian network, that can be used to predict nucleosome positioning along a chromosome based on one or more genomic input tracks containing position-specific information (evidence) Previous ... Keywords: chromatin structure, dynamic bayesian network, nucleosome prediction
Sheila M. Reynolds; Zhiping Weng; Jeff A. Bilmes; William Stafford Noble
Tracking Three Meddies with SOFAR Floats
Three Meddies were tracked for up to two years in the Canary Basin using neutrally buoyant SOFAR floats. These Meddies have cores of warm, salty Mediterranean Water and are approximately 100 km in diameter, 800 m thick, and are centered at a ...
P. L. Richardson; J. F. Price; D. Walsh; L. Armi; M. Schr�der
Robust adaptive beamforming via target tracking
The proposed robust beamformer adaptively self-corrects and tracks desired-source location errors or variations regardless of the eigenstructure of the input correlation matrix, of the array shape and nature of the noise. It only requires an order of ...
S. Gazor; S. Affes; Y. Grenier
WIPP Transparency Project - container tracking and monitoring demonstration using the Authenticated Tracking and Monitoring System (ATMS)
The Authenticated Tracking and Monitoring System (ATMS) is designed to answer the need for global monitoring of the status and location of proliferation-sensitive items on a worldwide basis, 24 hours a day. ATMS uses wireless sensor packs to monitor the status of the items within the shipment and surrounding environmental conditions. Receiver and processing units collect a variety of sensor event data that is integrated with GPS tracking data. The collected data are transmitted to the International Maritime Satellite (INMARSAT) communication system, which then sends the data to mobile ground stations. Authentication and encryption algorithms secure the data during communication activities. A typical ATMS application would be to track and monitor the stiety and security of a number of items in transit along a scheduled shipping route. The resulting tracking, timing, and status information could then be processed to ensure compliance with various agreements.
Enhancements to System for Tracking Radioactive Waste Shipments Benefit
Enhancements to System for Tracking Radioactive Waste Shipments Enhancements to System for Tracking Radioactive Waste Shipments Benefit Multiple Users Enhancements to System for Tracking Radioactive Waste Shipments Benefit Multiple Users January 30, 2013 - 12:00pm Addthis Transportation Tracking and Communication System users can now track shipments of radioactive materials and access transportation information on mobile devices. Transportation Tracking and Communication System users can now track shipments of radioactive materials and access transportation information on mobile devices. CARLSBAD, N.M. - EM's Carlsbad Field Office (CBFO) recently deployed a new version of the Transportation Tracking and Communication System (TRANSCOM) that is compatible with mobile devices, including smartphones. The recent enhancement, TRANSCOM version 3.0, improves the user interface
Building Energy Software Tools Directory: EffTrack
EffTrack EffTrack EffTrack logo Collects, stores, and analyzes water cooled centrifugal and screw chiller operating data to determine performance, diagnose causes of inefficiency, and recommend corrective action. EffTrack notifies plant contacts via email if problems occur. Plant operators and facility managers can review the hourly updated information by logging in to EffTrack from any computer with Internet access. By following the EffTrack recommendations for improvement, plant operators can significantly lower the chiller kW/ton and plant kWh consumption. These savings are identified and measured in the EffTrack reports. Screen Shots Keywords chiller efficiency, chiller performance Validation/Testing EffTrack uses industry standard efficiency calculations along with a
Hurricane Track Prediction Using a Statistical Ensemble of Numerical Models
A new statistical ensemble prediction system for tropical cyclone tracks is presented. The system is based on a statistical analysis of the annual performance of numerical track prediction models, assuming that their position errors are ...
Harry C. Weber
Monsoonal Interactions Leading to Sudden Tropical Cyclone Track Changes
Sudden poleward track changes of tropical cyclones embedded in monsoon gyres in the western North Pacific are documented. During these track changes, which are generally not well forecast, the cyclones are often accompanied by a separate comma-...
Lester E. Carr III; Russell L. Elsberry
A New Assessment of the Predictability of Tropical Cyclone Tracks
The inherent predictability of tropical cyclone tracks has received much attention since the 1980s. It is still an issue because of the recent improvement of track forecasts by numerical models. The aim of this study is to assess this ...
Matthieu Plu
V-128: Xen Event Channel Tracking Pointer Bug Local Privilege...
8: Xen Event Channel Tracking Pointer Bug Local Privilege Escalation V-128: Xen Event Channel Tracking Pointer Bug Local Privilege Escalation April 8, 2013 - 12:28am Addthis...
An Algorithm for Tracking Eyes of Tropical Cyclones
A tropical cyclone (TC) eye tracking (TCET) algorithm is presented in this study to objectively identify and track the eye and center of a tropical cyclone using radar reflectivity data. Twelve typhoon cases were studied for evaluating the TCET ...
Pao-Liang Chang; Ben Jong-Dao Jou; Jian Zhang
A Conservative Front Tracking Method in N-Dimensions
We propose a fully conservative Front Tracking algorithm for systems of nonlinear conservation laws. The algorithm can be applied uniformly in one, two, three and N dimensions. Implementation details for this algorithm ... Keywords: Front tracking, conservation, discontinuity
Jinjie Liu; Hyun-Kyung Lim; James Glimm; Xiaolin Li
Climatology and Interannual Variability of North Atlantic Hurricane Tracks
The spatial and temporal variability of North Atlantic hurricane tracks and its possible association with the annual hurricane landfall frequency along the U.S. East Coast are studied using principal component analysis (PCA) of hurricane track ...
Lian Xie; Tingzhuang Yan; Leonard J. Pietrafesa; John M. Morrison; Thomas Karl
Track NERSC Scheduled and Unscheduled Outages in Google Calendar
Track NERSC Outages in Google Calendar Track NERSC Outages in Google Calendar March 22, 2013 by Jack Deslippe (0 Comments) Outages are now available in Google calendar form. You...
EA-1136: Double Tracks Test Site, Nye County, Nevada | Department...
6: Double Tracks Test Site, Nye County, Nevada EA-1136: Double Tracks Test Site, Nye County, Nevada SUMMARY This EA evaluates the environmental impacts of the proposal for the U.S....
An Error Analysis of Atlantic Tropical Cyclone Track Guidance Models
Mean track forecast errors over the 6-yr period 1983�88 are compared for four tropical cyclone-track forecast models in use at the National Hurricane Center (NHC). The model types represented are statistical, statistical-dynamical, barctropic-...
Mark Demaria; Miles B. Lawrence; James T. Kroll
Markets for concentrating solar power
The report describes the markets for concentrating solar power. As concentrating solar power technologies advance into the early stages of commercialization, their economic potential becomes more sharply defined and increasingly tangible.
Tracking and modelling motion for biomechanical analysis
. . . . . . . . . . . . . . . . . . . . . . . 144 A.4. Nearest Point on a Sphere from a Point in Space . . . . . . . . . . . . . . . . . 145 A.5. IK Solutions using Conformal Geometric Algebra . . . . . . . . . . . . . . . . . 146 Glossary 149 Supplementary Materials 151 Bibliography 153 x...
Aristidou, Andreas
Thermal regeneration of an electrochemical concentration cell
A system and method are described for thermally regenerating an electrochemical concentration cell having first and second aluminum electrodes respectively positioned in contact with first and second electrolytes separated by an ion exchange member, the first and second electrolytes being composed of different concentrations of an ionic solvent and a salt, preferably an aluminum halide. The ionic solvent may be either organic or inorganic with a relatively low melting point, the ionic solvent and the salt form a complex wherein the free energy of formation of said complex is less than about -5 kcal/mole. A distillation column using solar heat or low grade industrial waste heat receives the first and second electrolytes and thermally decomposes the salt-solvent complex to provide feed material for the two half cells.
Krumpelt, M.; Bates, J.K.
Feedback assisted transmission subspace tracking for MIMO systems
in frequency-division duplex (FDD) systems. Those works havesubspace tracking in a FDD system. The objective complex
Banister, B C; Zeidler, J R
Alphabetical Index of (TREC) 2012 Papers by Track
... and Queensland University of Technology at the TREC 2012 Medical Track Bevan Koopman, Guido Zuccon, Anthony Nguyen, Deanne Vickers ...
Energy Basics: Concentrator Photovoltaic Systems
Energy Basics Renewable Energy Printable Version Share this resource Biomass Geothermal Hydrogen Hydropower Ocean Solar Photovoltaics Cells Systems Concentrating Solar...
Energy Basics: Concentrating Solar Power
NREL: Concentrating Solar Power Research - Southwest Concentrating Solar
Southwest Concentrating Solar Power 1000-MW Initiative Southwest Concentrating Solar Power 1000-MW Initiative Photos of various concentrating solar power systems. NREL, working through SunLab, supports the U.S. Department of Energy's goal to install 1,000 megawatts (MW) of new concentrating solar power systems in the southwestern United States by 2010. This level of deployment, combined with research and development to reduce technology component costs, could help reduce concentrating solar power electricity costs to $0.07/kilowatt-hour. At this cost, concentrating solar power can compete effectively in the Southwest's energy markets. To achieve the Initiative's goal, the U.S. Department of Energy is partnering with the Western Governors' Association to encourage concentrating solar power installations in Arizona, California, Colorado,
US-Pakistan Strategic Partnership: A Track II
US-Pakistan Strategic Partnership: A Track II Dialogue By Feroz H. Khan and Nick M. Masellis #12;1U.S. Pakistan Strategic Dialogue (track II), Sixth Iteration US-Pakistan Strategic Partnership,974 PASCC Report 2012 002 #12;2U.S. Pakistan Strategic Dialogue (track II), Sixth Iteration The Naval
Statistical modelling of tropical cyclone tracks: modelling cyclone lysis
We describe results from the fifth stage of a project to build a statistical model of tropical cyclone tracks. The previous stages considered genesis and the shape of tracks. We now consider in more detail how to represent the lysis (death) of tropical cyclones. Improving the lysis model turns out to bring a significant improvement to the track model overall.
Real time asset tracking in the data center
The importance and difficultly of asset tracking make it worthy of attention. We focus on data centers consisting of vertical racks where each rack may accommodate a variety of equipment. We describe an asset tracking system which automatically detects ... Keywords: Asset tracking, Change management, Data center, Inventory management, RIFD, Supply chain
Cyril Brignone; Tim Connors; Mehrban Jam; Geoff Lyon; Geetha Manjunath; Alan McReynolds; Swarup Mohalik; Ian Robinson; Craig Sayers; Cosme Sevestre; Jean Tourrilhes; Venugopal Srinivasmurthy
Sensetable: a wireless object tracking platform for tangible user interfaces
In this paper we present a system that electromagnetically tracks the positions and orientations of multiple wireless objects on a tabletop display surface. The system offers two types of improvements over existing tracking approaches such as computer ... Keywords: augmented reality, interactive surface, object tracking, system dynamics, tangible user interface, two-handed manipulation
James Patten; Hiroshi Ishii; Jim Hines; Gian Pangaro
Microcontroller Servomotor for Maximum Effective Power Point for Solar Cell System
In this paper a Maximum Power point (MPP) tracking algorithm is developed using dual-axis servomotor feedback tracking control system. An efficient and accurate servomotor system is used to increase the system efficiency and reduces the solar cell system coast. The proposed automatic servo control system based on PIC microcontroller which is used to control the photovoltaic (PV) modules. This servo system will track the sun rays in order to get MPP during the day using direct radiation. A photo cell is used to sense the direct sun radiation and feedback a signal to the PIC microcontroller, and then the decisions are made through the microcontroller and send a command to the servomotor system to achieve maximum power generation. The proposed system is demonstrated through simulation results. Finally, using the proposed system based on PIC microcontroller, the system will be more efficient, minimum cost, and maximum power transfer is obtained.
Al-Khalidy, M.; Al-Rawi, O.; Noaman, N.
Project Selections Project Selections Announced October 26, 2009 Lead Research Organization (Partner Organizations) DOE Grant Amount Lead Organization Location Project Description 1366 Technologies Inc. (Massachusetts Institute of Technology - Lab for PV Research) $4,000,000 Lexington, MA Renewable Power (solar) "Direct Wafer" technology to form high efficiency "monocrystalline- equivalent" silicon wafers directly from molten silicon, with potential to halve the installed cost of solar photovoltaics. Agrivida, Inc. $4,565,800 Medford, MA Biomass Energy Cell wall-degrading enzymes grown within the plant itself that are activated after harvest, dramatically reducing the cost of cellulosic biofuels and chemicals Arizona State University (Fluidic Energy,
Grid Points (GridSampleSet)
... OOF2: The Manual. Grid Points (GridSampleSet). ... Name. Grid Points (GridSampleSet) � Evaluate data on a rectangular grid of points. Synopsis. ...
Grid Points (StatGridSampleSet)
... OOF2: The Manual. Grid Points (StatGridSampleSet). ... Name. Grid Points (StatGridSampleSet) � Evaluate data on a rectangular grid of points. ...
Method and apparatus for aligning a solar concentrator using two lasers
A method and apparatus are provided for aligning the facets of a solar concentrator. A first laser directs a first laser beam onto a selected facet of the concentrator such that a target board positioned adjacent to the first laser at approximately one focal length behind the focal point of the concentrator is illuminated by the beam after reflection thereof off of the selected facet. A second laser, located adjacent to the vertex of the optical axis of the concentrator, is used to direct a second laser beam onto the target board at a target point thereon. By adjusting the selected facet to cause the first beam to illuminate the target point on the target board produced by the second beam, the selected facet can be brought into alignment with the target point. These steps are repeated for other selected facets of the concentrator, as necessary, to provide overall alignment of the concentrator.
Diver, Richard Boyer Jr.
Planar micro-optic solar concentration
such as compound parabolic concentrators and nonimagingas kaleidoscopes or compound parabolic concentrators whicha variation of the compound parabolic concentrator, however,
Karp, Jason Harris
A Critical Point for Science?
, taboo ideas become arespectable part of science? Occult Sciences Tripos? CU Institute of Astrology? Telepathy, �memory of water�, �cold fusion�?Scientific theology, intelligent design? Mar. 5, 2008/CUPS A Critical Point for Science / Brian Josephson 32...
Josephson, B D
FastTrack Generic Data Link 1.0
The FastTrack Generic Data Link version 1.0 software system utilizes EPRI's Data Transfer Tool to allow users to transfer waste processing data from plant or corporate databases into a holding database that can be queried, on demand, by FastTrack users over a corporate intranet. This software system consists of four required software elements: the Data Transfer Tool 3.1, FastTrack 2.0 (provided separately as EPRI product 1009563), the FastTrack Data Link databases, and the FastTrack Data Link web service...
Measurement and Performance Tracking (MAPT) Initiative | Open Energy
Measurement and Performance Tracking (MAPT) Initiative Measurement and Performance Tracking (MAPT) Initiative Jump to: navigation, search Logo: WRI Measurement and Performance Tracking (MAPT) Project Name WRI Measurement and Performance Tracking (MAPT) Project Agency/Company /Organization World Resources Institute (WRI) Sector Climate, Energy Topics Background analysis, Baseline projection, Low emission development planning, -NAMA Resource Type Case studies/examples, Guide/manual, Lessons learned/best practices, Training materials, Workshop Website http://www.wri.org/mapt Program Start 2011 Country Brazil, Colombia, Ethiopia, India, South Africa, Thailand South America, South America, Eastern Africa, Southern Asia, Southern Africa, South-Eastern Asia References Measurement and Performance Tracking (MAPT) Project[1]
Waste containers may contain volatile organic compounds (VOCs), methane, hydrogen and possibly propane. These constituents may occur individually or in mixtures. Determining if a waste container contains a flammable concentration of flammable gases and vapors (from VOCs) is important to the safety of the handling, repackaging and shipping activities. This report provides the basis for determining the flammability of mixtures of flammable gases and vapors. The concentration of a mixture that is at the lowest flammability limit for that mixture is called the action concentration. The action concentration can be determined using total VOC concentrations or actual concentration of each individual VOC. The concentrations of hydrogen and methane are included with the total VOC or individual VOC concentration to determine the action concentration. Concentrations below this point are not flammable. Waste containers with gas/vapor concentrations at or above the action concentration are considered flammable.
Noncompliance Tracking System Registration and Reporting
Noncompliance Tracking System Registration and Reporting Office of Enforcement and Oversight NTS Reporting NTS Registration (For new registration and password changes) REGISTRATION INFORMATION Registrants for the Noncompliance Tracking System (NTS) with an ACTIVE ACCOUNT for the HSS Reporting Systems: Occurrence Reports & Processing System (ORPS), Computerized Accident/Incident Reporting System (CAIRS), Suspect Counterfeit Items (SCI), or the Daily Occurrence (DO) reports can use the same credentials to access NTS. Please access NTS REPORTING. Registrants who DO NOT have an HSS Reporting Systems account, or who have not accessed their account within the past six months MUST REGISTER for a NTS account. Please register at: HSS Reporting Systems Registration. If you need additional information or assistance in registering, please contact HSS User Support.
Tracking Quintessence Would Require Two Cosmic Coincidences
Good tracking requires that the quintessence energy fraction slowly increase while the roll $\\lambda\\equiv -d\\ln V/\\varkappa d\\phi$ slowly decreases, but is not yet truly slow-rolling. The supernova bound on the present quintessence equation of state requires either (1) a cosmological constant or other fine-tuned "crawling quintessence" or (2) "roll-over quintessence" that tracked until recently, but now became slow rolling, because of a sharp increase in potential curvature. Thus, fine-tuning is required by constant equation of state and inverse power potentials, but can be avoided by the SUGRA and Skordis-Albrecht potentials and other good trackers, provided quintessence energy domination and slow roll {\\em both} began only recently. This makes the time in which we live special in {\\em two} respects.
Sidney Bludman
PRIVACY IMPACT ASSESSMENT: Visitor Dosimeter Badge Tracking
Visitor Visitor Dosimeter Badge Tracking PIA Template Version 3 - May, 2009 Department of Energy Privacy Impact Assessment (PIA) Guidance is provided in the template. See DOE Order 206.1, Department of Energy Privacy Program, Appendix A, Privacy Impact Assessments, for requirements and additional guidance for conducting a PIA: http://www.directives.doe.gov/pdfs/doe/doetexUneword/206/o2061.pdf Please complete electronically: no hand-written submissions will be accepted. This template may not be modified. MODULE 1- PRIVACY NEEDS ASSESSMENT Date June 11, 2009 Deparbnental Idaho National Laboratory Element & Site Building 616 Willow Creek Building Name of Information Visitor Dosimeter Badge Tracking System or IT Project Exhibit Project UID 217975 New PIA ~ Update D Name, Title I Contact Information Phone, Email Lynn Rockhold System Owner I' 1\ I \ \ ( y P II 114 I' "I
Nuclear Track Detectors for Particle Searches
In this paper we report a search for intermediate mass magnetic monopoles and nuclearites using CR39 and Makrofol Nuclear Track Detectors (NTDs) of the SLIM large area experiment, 440 m^2 exposed at the high altitude laboratory of Chacaltaya (Bolivia) and about 100 m^2 at Koksil, Himalaya (Pakistan). We discuss the new chemical etching and improved analysis of the SLIM CR39 sheets. Preliminary limits are based on 316 $m^2$ of CR39 NTDs exposed for 3.9 y.
Manzoor, S; Cozzi, M; Errico, M; Giacomelli, G; Giorgini, M; Kumar, A; Margiotta, A; Medinaceli, E; Patrizii, L; Popa, V; Qureshi, I E; Togo, V
An interface tracking model for droplet electrocoalescence.
This report describes an Early Career Laboratory Directed Research and Development (LDRD) project to develop an interface tracking model for droplet electrocoalescence. Many fluid-based technologies rely on electrical fields to control the motion of droplets, e.g. microfluidic devices for high-speed droplet sorting, solution separation for chemical detectors, and purification of biodiesel fuel. Precise control over droplets is crucial to these applications. However, electric fields can induce complex and unpredictable fluid dynamics. Recent experiments (Ristenpart et al. 2009) have demonstrated that oppositely charged droplets bounce rather than coalesce in the presence of strong electric fields. A transient aqueous bridge forms between approaching drops prior to pinch-off. This observation applies to many types of fluids, but neither theory nor experiments have been able to offer a satisfactory explanation. Analytic hydrodynamic approximations for interfaces become invalid near coalescence, and therefore detailed numerical simulations are necessary. This is a computationally challenging problem that involves tracking a moving interface and solving complex multi-physics and multi-scale dynamics, which are beyond the capabilities of most state-of-the-art simulations. An interface-tracking model for electro-coalescence can provide a new perspective to a variety of applications in which interfacial physics are coupled with electrodynamics, including electro-osmosis, fabrication of microelectronics, fuel atomization, oil dehydration, nuclear waste reprocessing and solution separation for chemical detectors. We present a conformal decomposition finite element (CDFEM) interface-tracking method for the electrohydrodynamics of two-phase flow to demonstrate electro-coalescence. CDFEM is a sharp interface method that decomposes elements along fluid-fluid boundaries and uses a level set function to represent the interface.
Erickson, Lindsay Crowl
Combined Cycle Performance Tracking Guideline: Interim Report
The Electric Power Research Institute�s (EPRI�s) Combined Cycle Performance Monitoring and Recovery Guideline (EPRI report 1023971) was developed in 2012 to provide plant owners and operators with a comprehensive guideline for identifying and quantifying combined-cycle performance losses and appropriate recovery activities for a generic F-Class combined-cycle power plant (CCPP). This report, Combined-Cycle Performance Tracking Guideline, has been developed as an adjunct ...
Demonstrations: collisions on an air track
Demonstrations: ·collisions on an air track Text: Fishbane 8-1, 8-2, 8-3, 8-4, 8-5, 8-6 Problems ) = d dt ( MTot Vcm ) = MTot dVcm dt = MTot acm Vcm = acm = dVcm dt cm velocity dRcm dt Thus, Rcm , Vcm , acm behave just like any kinematic set r, v, a, except that the dynamics is governed
Boal, David
The Performance of the Gamma-Ray Energy Tracking In-Beam Nuclear Array GRETINA
The Gamma-Ray Energy Tracking In-beam Nuclear Array (GRETINA) is a new generation high-resolution -ray spectrometer consisting of electrically segmented high-purity germanium crystals. GRETINA is capable of reconstructing the energy and position of each -ray interaction point inside the crystal with high resolution. This enables -ray energy tracking which in turn provides an array with large photopeak efficiency, high resolution and good peak-to-total ratio. GRETINA is used for nuclear structure studies with demanding -ray detection requirements and it is suitable for experiments with radioactive-ion beams with high recoil velocities. The GRETINA array has a 1 solid angle coverage and constitutes the first stage towards the full 4 array GRETA. We present in this paper the main parts and the performance of the GRETINA system.
Paschalis, S. [Lawrence Berkeley National Laboratory (LBNL); Lee, I. Y. [Lawrence Berkeley National Laboratory (LBNL); Macchiavelli, A. O. [Lawrence Berkeley National Laboratory (LBNL); Campbell, C. M. [Lawrence Berkeley National Laboratory, The Scripps Research Institite and The Skaggs Institute; Cromaz, M. [Lawrence Berkeley National Laboratory (LBNL); Gros, S. [Lawrence Berkeley National Laboratory (LBNL); Pavin, J. [Lawrence Berkeley National Laboratory (LBNL); Qian, J. [Lawrence Berkeley National Laboratory (LBNL); Clark, R. M. [Lawrence Berkeley National Laboratory (LBNL); Crawford, H. L. [Lawrence Berkeley National Laboratory (LBNL); Doering, D. [Lawrence Berkeley National Laboratory (LBNL); Fallon, P. [Lawrence Berkeley National Laboratory (LBNL); Lionberger, C. [Lawrence Berkeley National Laboratory (LBNL); Loew, T. [Lawrence Berkeley National Laboratory (LBNL); Petri, M. [Lawrence Berkeley National Laboratory (LBNL); Stezelberger, T. [Lawrence Berkeley National Laboratory (LBNL); Zimmerman, S. [Lawrence Berkeley National Laboratory (LBNL); Radford, David C [ORNL; Lagergren, Karin B [ORNL; Weisshaar, D. [Michigan State University, East Lansing; Winkler, R. [Michigan State University, East Lansing; Glasmacher, T. [Michigan State University, East Lansing; Anderson, J. T, [Argonne National Laboratory (ANL); Beausang, C. W. [University of Richmond
Technique for tracking the effect of weatherization retrofits on low-income housing
This report presents a technique for analyzing the effect of energy saving retrofits installed in low-income housing under a nationwide weatherization demonstration program. A tracking technique, based on the calculated balance-point temperature of each home prior to the weatherization, was developed to estimate the would-be fuel consumption over a period of time if the house had not been weatherized. The savings in fuel consumption for a home can be determined from the difference between the actual usage after retrofit and the calculated usage if it were not retrofitted. Besides the overall reduction, the saving in energy usage during different time periods while the house is being weatherized can be visualized from the graphical representation of the tracking technique.
Chang, Y.L.; Grot, R.A.
Tracking particles by passing messages between images
Methods to extract information from the tracking of mobile objects/particles have broad interest in biological and physical sciences. Techniques based on the simple criterion of proximity in time-consecutive snapshots are useful to identify the trajectories of the particles. However, they become problematic as the motility and/or the density of the particles increases because of the uncertainties on the trajectories that particles have followed during the acquisition time of the images. Here, we report efficient methods for learning parameters of the dynamics of the particles from their positions in time-consecutive images. Our algorithm belongs to the class of message-passing algorithms, also known in computer science, information theory and statistical physics under the name of Belief Propagation (BP). The algorithm is distributed, thus allowing parallel implementation suitable for computations on multiple machines without significant inter-machine overhead. We test our method on the model example of particle tracking in turbulent flows, which is particularly challenging due to the strong transport that those flows produce. Our numerical experiments show that the BP algorithm compares in quality with exact Markov Chain Monte-Carlo algorithms, yet BP is far superior in speed. We also suggest and analyze a random-distance model that provides theoretical justification for BP accuracy. Methods developed here systematically formulate the problem of particle tracking and provide fast and reliable tools for its extensive range of applications.
Chertkov, Michael [Los Alamos National Laboratory; Kroc, Lukas [Los Alamos National Laboratory; Zdeborova, Lenka [Los Alamos National Laboratory; Krakala, Florent [ESPCI; Vergassola, M [CNRS
Upgrading railroad test track, Pueblo, Colorado
The railroad test track (RTT) at the Transportation Technology Center (TTC) in Pueblo, Colo., was constructed in the early 1970s to support high-speed testing of new railroad rolling stock. Through the years it has been used to test a wide range of railroad passenger and freight cars and locomotives. Now, 20 years later, a new high-speed train set is being procured by Amtrak for service in the improved Northeast Corridor. The test facilities at Pueblo will play an important role in acceptance and safety testing of new high-speed train sets in the US. The Federal Railroad Administration (FRA) commissioned a study to review the existing condition of the test track and to make recommendations as to possible improvement options so that the facility would be able to test current and future generations of high-speed rail equipment. This paper describes the condition of the test track and explores ways in which it may be modified to accommodate the testing of high-speed train technologies in the near future and into the next century.
Briggs, K. III; Chamberlain, K. [Parsons Brinckerhoff Quade and Douglas, Inc., Boston, MA (United States)
Optical Tracking Technology in Stereotactic Radiation Therapy
The last decade has seen the introduction of advanced technologies that have enabled much more precise application of therapeutic radiation. These relatively new technologies include multileaf collimators, 3-dimensional conformal radiotherapy planning, and intensity modulated radiotherapy in radiotherapy. Therapeutic dose distributions have become more conformal to volumes of disease, sometimes utilizing sharp dose gradients to deliver high doses to target volumes while sparing nearby radiosensitive structures. Thus, accurate patient positioning has become even more important, so that the treatment delivered to the patient matches the virtual treatment plan in the computer treatment planning system. Optical and image-guided radiation therapy systems offer the potential to improve the precision of patient treatment by providing a more robust fiducial system than is typically used in conventional radiotherapy. The ability to accurately position internal targets relative to the linac isocenter and to provide real-time patient tracking theoretically enables significant reductions in the amount of normal tissue irradiated. This report reviews the concepts, technology, and clinical applications of optical tracking systems currently in use for stereotactic radiation therapy. Applications of radiotherapy optical tracking technology to respiratory gating and the monitoring of implanted fiducial markers are also discussed.
Wagner, Thomas H. [Department of Radiation Physics, M. D. Anderson Cancer Center Orlando, Orlando, FL (United States)]. E-mail: firstname.lastname@example.com; Meeks, Sanford L. [Department of Radiation Physics, M. D. Anderson Cancer Center Orlando, Orlando, FL (United States); Bova, Frank J. [Department of Neurological Surgery, University of Florida, Gainesville, FL (United States); Friedman, William A. [Department of Neurological Surgery, University of Florida, Gainesville, FL (United States); Willoughby, Twyla R. [Department of Radiation Physics, M. D. Anderson Cancer Center Orlando, Orlando, FL (United States); Kupelian, Patrick A. [Department of Radiation Physics, M. D. Anderson Cancer Center Orlando, Orlando, FL (United States); Tome, Wolfgang [Department of Human Oncology, University of Wisconsin, Madison, WI (United States)
Efficient Tracking for Short-Term Multi-Company Networks
Tracking of shipments is an important element of customer service in the transportation industry; and essential for logistics services as merge-in-transit. However, contemporary tracking systems are designed for use within a single company, and are thus invariably inadequate for multi-company environments. The single company focus has led to a reduced span of monitoring and a diluted accessibility of information due to proprietary tracking codes and information architectures centred on the tracking service provider. This paper presents a novel forwarder-independent approach for solving the difficulties of tracking in multi-company supply networks. The research argues that the proposed tracking approach is superior to contemporary approaches for material flow tracking in short-term multi-company distribution networks.
Mikko K�rkk�inen; Timo Ala-Risku; Kary Fr�mling
Federal Energy Management Program: EISA Compliance Tracking System Reports
EISA Compliance EISA Compliance Tracking System Reports and Data to someone by E-mail Share Federal Energy Management Program: EISA Compliance Tracking System Reports and Data on Facebook Tweet about Federal Energy Management Program: EISA Compliance Tracking System Reports and Data on Twitter Bookmark Federal Energy Management Program: EISA Compliance Tracking System Reports and Data on Google Bookmark Federal Energy Management Program: EISA Compliance Tracking System Reports and Data on Delicious Rank Federal Energy Management Program: EISA Compliance Tracking System Reports and Data on Digg Find More places to share Federal Energy Management Program: EISA Compliance Tracking System Reports and Data on AddThis.com... Requirements by Subject Requirements by Regulation Notices & Rules
Cylindrical Acoustic Levitator/Concentrator
Cylindrical Acoustic Levitator/Concentrator Cylindrical Acoustic Levitator/Concentrator Cylindrical Acoustic Levitator/Concentrator A low-power, inexpensive acoustic apparatus for levitation and/or concentration of aerosols and small liquid/solid samples having particulates up to several millimeters in diameter in air or other fluids is described. Available for thumbnail of Feynman Center (505) 665-9090 Email Cylindrical Acoustic Levitator/Concentrator A low-power, inexpensive acoustic apparatus for levitation and/or concentration of aerosols and small liquid/solid samples having particulates up to several millimeters in diameter in air or other fluids is described. It is constructed from a commercially available, hollow cylindrical piezoelectric crystal which has been modified to tune the resonance frequency of the breathing mode resonance of the crystal to that
ARM - Measurement - CO2 concentration
: CO2 concentration The amount of carbon dioxide, a heavy, colorless greenhouse gas, per unit of volume. Categories Atmospheric Carbon Instruments The above measurement is...
use mirrors to reflect and concentrate sunlight onto receivers that collect solar energy and convert it to heat. This thermal energy can then be used to produce electricity...
A low-power, inexpensive acoustic apparatus for levitation andor concentration of aerosols and small liquidsolid samples having particulates up to several millimeters in...
Advanced photovoltaic concentrator system low-cost prototype module
This report describes the continued development of an extruded lens and the development of a PV receiver, both of which will be used in the Solar Engineering Applications Corporation (SEA) 10X concentrator. These efforts were pare of a pre-Concentrator Initiative Program. The 10X concentrator consists of an inexpensive, extruded linear Fresnel lens which focuses on one-sun cells which are adhesive-bonded to an anodized aluminum heat sink. Module sides are planned to be molded along with the lens and are internally reflective for improved on- and off-track performance. End caps with molded-in bearings complete the module. Ten modules are mounted in a stationary frame for simple, single-axis tracking in the east-west direction. This configuration an array, is shipped completely assembled and requires only setting on a reasonably flat surface, installing 4 fasteners, and hooking up the wires. Development of the 10-inch wide extruded lens involved one new extrusion die and a series of modifications to this die. Over 76% lens transmission was measured which surpassed the program goal of 75%. One-foot long receiver sections were assembled and subjected to evaluation tests at Sandia National Laboratories. A first group had some problem with cell delamination and voids but a second group performed very well, indicating that a full size receiver would pass the full qualification test. Cost information was updated and presented in the report. The cost study indicated that the Solar Engineering Applications Corporation concentrator system can exceed the DOE electricity cost goals of less than 6cents per KW-hr. 33 figs., 11 tabs.
Kaminar, N.R.; McEntee, J.; Curchod, D. (Solar Engineering Applications Corp., San Jose, CA (United States))
Asymptotics of Greedy Energy Points
For a symmetric kernel $k:X\\times X \\to \\mathbb{R}\\cup\\{+\\infty\\}$ on a locally compact Hausdorff space $X$, we investigate the asymptotic behavior of greedy $k$-energy points $\\{a_{i}\\}_{1}^{\\infty}$ for a compact subset $A\\subset X$ that are defined inductively by selecting $a_{1}\\in A$ arbitrarily and $a_{n+1}$ so that $\\sum_{i=1}^{n}k(a_{n+1},a_{i})=\\inf_{x\\in A}\\sum_{i=1}^{n}k(x,a_{i})$. We give sufficient conditions under which these points (also known as Leja points) are asymptotically energy minimizing (i.e. have energy $\\sum_{i\
A. L�pez Garc�a; E. B. Saff
Introduction to the polymorphic tracking code Fibre bundles, polymorphic Taylor types and "Exact tracking"
This is a description of the basic ideas behind the ``Polymorphic Tracking Code'' or PTC. PTC is truly a ``kick code'' or symplectic integrator in the tradition of TRACYII, SixTrack, and TEAPOT. However it separates correctly the mathematical atlas of charts and the magnets at a structural level by implementing a ``restricted fibre bundle.'' The resulting structures allow backward propagation and recirculation, something not possible in standard tracking codes. Also PTC is polymorphic in handling real (single, double and even quadruple precision) and Taylor series. Therefore it has all the tools associated to the TPSA packages: Lie methods, Normal Forms, Cosy-Infinity capabilities, beam envelopes for radiation, etc., as well as parameter dependence on-the-fly. However PTC is an integrator, and as such, one must, generally, adhere to the Talman ``exactness'' view of modelling. Incidentally, it supports exact sector and rectangular bends as well. Of course, one can certainly bypass its integrator and the user i...
Schmidt, F; McIntosh, E
Process for concentrated biomass saccharification
Processes for saccharification of pretreated biomass to obtain high concentrations of fermentable sugars are provided. Specifically, a process was developed that uses a fed batch approach with particle size reduction to provide a high dry weight of biomass content enzymatic saccharification reaction, which produces a high sugars concentration hydrolysate, using a low cost reactor system.
Hennessey, Susan M. (Avondale, PA); Seapan, Mayis (Landenberg, PA); Elander, Richard T. (Evergreen, CO); Tucker, Melvin P. (Lakewood, CO)
Experimental Modal Analysis on a Rotating Fan Using Tracking-CSLDV
Continuous Scan Laser Doppler Vibrometry (CSLDV) modifies the traditional mode of operation of a vibrometer by sweeping the laser measurement point continuously over the structure while measuring, enabling one to measure spatially detailed mode shapes quickly and minimizing the inconsistencies that can arise if the structure or test conditions change with time. When a periodic scan path is employed, one can decompose the measurement into the response that would have been measured at each point traversed by the laser and obtain the structure's mode shapes and natural frequencies using conventional modal analysis software. In this paper, continuous-scan vibrometry is performed on a rotating fan, using computer controlled mirrors to track the rotating fan blades while simultaneously sweeping the measurement point over the blades. This has the potential to circumvent the difficulty of attaching contact sensors such as strain gauges, which might modify the structure and invalidate the results. In this work, impact excitation was used to excite a 3-blade fan rotating at various speeds, and the blades were scanned with a cloverleaf pattern that captured the bending of all three blades simultaneously. Some specialized signal processing is helpful in minimizing the effect of rotation frequency harmonics in the measurements, and specific scan strategies are needed to avoid those frequencies, both of these issues are discussed in the paper. While noise in the laser vibrometer does pose some difficulty, the results show that several modes could be extracted and that the tracking-CSLDV results agree with measurements obtained from the parked fan.
Gasparoni, Andrea; Castellini, Paolo; Tomasini, Enrico P. [Dipartimento di Meccanica, Universita Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona (Italy); Allen, Matthew S.; Yang Shifei; Sracic, Michael W. [Department of Engineering Physics, University of Wisconsin-Madison, 535 Engineering Research Building, 1500 Engineering Drive, Madison, WI 53706 (United States)
Wellness Program WELLNESS POINTS BANK
Wellness Program WELLNESS POINTS BANK Renew your commitment to health. Start again October 1, 2012 to your family and friends, too. Your health and well-being are also important to the University of Minnesota. As your employer, the University recognizes the value of investing in a comprehensive Wellness
Thomas, David D.
Upgrade of the ALICE Inner Tracking System
The Inner Tracking System (ITS) is the key ALICE detector for the study of heavy flavour production at LHC. Heavy flavor can be studied via the identification of short-lived hadrons containing heavy quarks which have a mean proper decay length in the order of 100-300 $\\mu$m. To accomplish this task, the ITS is composed of six cylindrical layers of silicon detectors (two pixel, two drift and two strip) with a radial coverage from 3.9 to 43 cm and a material budget of 1.1% X0 per layer. %In particular, the properties of the two innermost layers define the ITS performance in measuring the displaced vertex of such short-lived particles. In order to enhance the ALICE physics capabilities, and, in particular, the tracking performance for heavy-flavour detection, the possibility of an ITS upgrade has been studied in great detail. It will make use of the spectacular progress made in the field of imaging sensors over the last ten years as well as the possibility to install a smaller radius beampipe. The upgraded detector will have greatly improved features in terms of: the impact parameter resolution, standalone tracking efficiency at low $p_{t}$, momentum resolution and readout capabilities. The Conceptual Design Report, which covers the design and performance requirements, the upgrade options, as well as the necessary R&D efforts, was made public in September 2012. An intensive R&D program has been launched to review the different technological options under consideration. The new detector should be ready to be installed during the long LHC shutdown period scheduled in 2017-2018.
Stefan Rossegger
Uncertainty in site inspection and tracking database estimates of savings
The authors systematically analyze impact evaluation results of three commercial lighting rebate DSM programs. The research includes (1) analysis of ex ante and ex post estimates of program performance, broken down into critical program parameters: hours of operation, watts saved per measure, and measures installed per site; (2) construction of probability distributions of program performance, both in the aggregate and for these critical program parameters; and (3) use of these analyses and distributions to draw conclusions about the accuracy of savings estimates from a variety of evaluation methods. The analysis suggests that realization rates (a ratio of metered savings estimates to tracking database savings estimates) for the sample of participants they examine are subject to tremendous variability, calling into question the usefulness of a point estimate of the realization rate. Discrepancies in estimates of hours of operation are responsible for most of the uncertainty in the realization rate. Finally, the impact of shorter measure lifetimes on savings estimates suggest that persistence studies should be an evaluation priority.
Sonnenblick, R.; Eto, J. [Lawrence Berkeley National Lab., CA (United States)
ANU's new 500 m paraboloidal dish solar concentrator K Lovegrove, G Burgess, D McCready, J Pye
focused at the fixed point. Trough systems use a parabolic trough shaped mirror that can be hundreds of metres long. The trough tracks from East to west to follow the sun, which is focused to a central tube containing the fluid. Dish systems are very similar to parabolic satellite dishes or radio telescopes
Marine asset security and tracking (MAST) system
Methods and apparatus are described for marine asset security and tracking (MAST). A method includes transmitting identification data, location data and environmental state sensor data from a radio frequency tag. An apparatus includes a radio frequency tag that transmits identification data, location data and environmental state sensor data. Another method includes transmitting identification data and location data from a radio frequency tag using hybrid spread-spectrum modulation. Another apparatus includes a radio frequency tag that transmits both identification data and location data using hybrid spread-spectrum modulation.
Hanson, Gregory Richard (Clinton, TN); Smith, Stephen Fulton (Loudon, TN); Moore, Michael Roy (Corryton, TN); Dobson, Eric Lesley (Charleston, SC); Blair, Jeffrey Scott (Charleston, SC); Duncan, Christopher Allen (Marietta, GA); Lenarduzzi, Roberto (Knoxville, TN)
Spin tracking study of the AGS
In the recent polarized proton runs in the AGS, a 5% partial snake was used successfully to overcome the imperfection depolarizing resonances. Although some depolarization at intrinsic resonances are expected, the level of the depolarization does not agree with a simple model calculation. A spin tracking program is then used to simulate the real polarized proton beam in the AGS. The results show that, due to the linear coupling introduced by a solenoidal 5% partial snake, the polarized beam will be partially depolarized also at the so-called coupling resonance, which is related to the horizontal betatron tune. The synchrotron oscillation also affects the beam polarization to a smaller extent.
Huang, H.; Roser, T.; Luccio, A.
Optimal Source Tracking and Beaming of LISA
We revisit the directionally optimal data streams of LISA first introduced in Nayak etal. It was shown that by using appropriate choice of Time delay interferometric (TDI) combinations, a monochromatic fixed source in the barycentric frame can be optimally tracked in the LISA frame. In this work, we study the beaming properties of these optimal streams. We show that all the three streams V+, Vx and Vo with maximum, minimum and zero directional SNR respectively are highly beamed. We study in detail the frequency dependence of the beaming.
Archana Pai
Pressure transient method for front tracking
A pressure transient technique for tracking the advance of cold water fronts during water flooding and goethermal injection operations has been developed. The technique is based on the concept that the steady state pressure buildup in the reservoir region inside the front can be calculated by a fluid skin factor. By analyzing successive pressure falloff tests, the advance of the front in the reservoir can be monitored. The validity of the methods is demonstrated by application to three numerically simulated data sets, a nonisothermal step-rate injection test, a series of pressure falloffs in a multilayered reservoir, and a series of pressure falloff tests in a water flooded oil reservoir.
Benson, S.M.; Bodvarsson, G.S.
Midwest Renewable Energy Tracking System (Multiple States) | Department of
Renewable Energy Tracking System (Multiple States) Renewable Energy Tracking System (Multiple States) Midwest Renewable Energy Tracking System (Multiple States) < Back Eligibility Developer Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Illinois Program Type Green Power Purchasing Provider MidWest ISO The Midwest Renewable Energy Tracking System (M-RETS®) tracks renewable energy generation in participating States and Provinces and assists in verifying compliance with individual state/provincial or voluntary Renewable Portfolio Standards (RPS) and objectives. M-RETS® is a tool to keep track of all relevant information about renewable energy produced and delivered in the region. Currently, several States and Provinces participate in M-RETS®: Illinois,
OpenCV and TYZX : video surveillance for tracking.
As part of the National Security Engineering Institute (NSEI) project, several sensors were developed in conjunction with an assessment algorithm. A camera system was developed in-house to track the locations of personnel within a secure room. In addition, a commercial, off-the-shelf (COTS) tracking system developed by TYZX was examined. TYZX is a Bay Area start-up that has developed its own tracking hardware and software which we use as COTS support for robust tracking. This report discusses the pros and cons of each camera system, how they work, a proposed data fusion method, and some visual results. Distributed, embedded image processing solutions show the most promise in their ability to track multiple targets in complex environments and in real-time. Future work on the camera system may include three-dimensional volumetric tracking by using multiple simple cameras, Kalman or particle filtering, automated camera calibration and registration, and gesture or path recognition.
He, Jim; Spencer, Andrew; Chu, Eric
Sim Track User's Manual (v 1.0)
SimTrack is a simple c++ library designed for the numeric particle tracking in the high energy accelerators. It adopts the 4th order symplectic integrator for the optical transport in the magnetic elements. The 4-D and 6-D weak-strong beam-beam treatments are integrated in it for the beam-beam studies. SimTrack is written with c++ class and standard template library. It provides versatile functions to manage elements and lines. It supports a large range of types of elements. New type of element can be easily created in the library. SimTrack calculates Twiss, coupling and fits tunes, chromaticities and corrects closed orbits. AC dipole and AC multipole are available in this library. SimTrack allows change of element parameters during tracking.
Luo, Y.
ORO Office Safeguards and Security Clearance Tracking System and Visitor
Office Safeguards and Security Clearance Tracking System and Office Safeguards and Security Clearance Tracking System and Visitor Control System PIA, Oak Ridge Operations Office ORO Office Safeguards and Security Clearance Tracking System and Visitor Control System PIA, Oak Ridge Operations Office ORO Office Safeguards and Security Clearance Tracking System and Visitor Control System PIA, Oak Ridge Operations Office ORO Office Safeguards and Security Clearance Tracking System and Visitor Control System PIA, Oak Ridge Operations Office More Documents & Publications Occupational Medicine - Assistant PIA, Idaho National Laboratory ORO Verification of Employment Tracking System(VETS) PIA, Oak ridge Operations Office iManage Strategic Integrated Procurement Enterprise System (STRIPES) PIA, Office of Procurement and Assistance Management
High-Performance Wide-Area Optical Tracking: The HiBall Tracking System
Since the early 1980s, the Tracker Project at the University of North Carolina at Chapel Hill has been working on wide-area head tracking for virtual and augmented environments. Our long-term goal has been to achieve the high performance required for ...
Greg Welch; Gary Bishop; Leandra Vicci; Stephen Brumback; Kurtis Keller; D'nardo Colucci
3D Arm Motion Tracking for Home-based Rehabilitation
Chapter 13 3D Arm Motion Tracking for Home-based Rehabilitation Y. Tao and H. Hu 13.1 Introduction This paper presents a real-time hybrid solution to articulated 3D arm motion tracking for home-based of articulated objects, e.g., human upper limbs. The purpose is to develop a 3D motion tracking model for home-based
Hu, Huosheng
Hydrogen effects on the point defect spectrum in Fe-C alloys
As part of a multi-scale approach for modeling hydrogen embrittlement in hardened steels we have investigated, employing density functional theory methods, the stability and concentrations of the point defect clusters ...
Monasterio Vel�squez, Paul Rene
Concentrating Solar Power Tower System Basics | Department of Energy
Concentrating Solar Power Tower System Basics Concentrating Solar Power Tower System Basics Concentrating Solar Power Tower System Basics August 20, 2013 - 5:06pm Addthis In power tower concentrating solar power systems, numerous large, flat, sun-tracking mirrors, known as heliostats, focus sunlight onto a receiver at the top of a tall tower. A heat-transfer fluid heated in the receiver is used to generate steam, which, in turn, is used in a conventional turbine generator to produce electricity. Some power towers use water/steam as the heat-transfer fluid. Other advanced designs are experimenting with molten nitrate salt because of its superior heat-transfer and energy-storage capabilities. Individual commercial plants can be sized to produce up to 200 megawatts of electricity. Illustration of a power tower power plant. Sunlight is shown reflecting off a series of heliostats surrounding the tower and onto the receiver at the top of the tower. The hot heat-transfer fluid exiting from the receiver flows down the tower, into a feedwater reheater, and then into a turbine, which generates electricity that is fed into the power grid. The cool heat-transfer fluid exiting the turbine flows into a steam condenser to be cooled and sent back up the tower to the receiver.
Dominican Republic-Fast-Track Development of Transformative
Dominican Republic-Fast-Track Development of Transformative Dominican Republic-Fast-Track Development of Transformative Climate-Compatible Development Plans and Building of Regional and Local Capacities Jump to: navigation, search Logo: Dominican Republic-Fast-Track Development of Transformative Climate-Compatible Development Plans and Building of Regional and Local Capacities Name Dominican Republic-Fast-Track Development of Transformative Climate-Compatible Development Plans and Building of Regional and Local Capacities Agency/Company /Organization Coalition for Rainforest Nations Focus Area Economic Development Topics Low emission development planning, Policies/deployment programs Resource Type Guide/manual, Presentation Website http://www.rainforestcoalition Country Dominican Republic UN Region Caribbean
Measure, track, and benchmark | ENERGY STAR Buildings & Plants
Measure, track, and benchmark Measure, track, and benchmark Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section Get started with ENERGY STAR Make the business case Build an energy management program Measure, track, and benchmark Tools for benchmarking energy management practices Tools for tracking and benchmarking facility energy performance ENERGY STAR Energy Performance Indicators for plants
New Methods in Motion Tracking to Generate Motion-Corrected ...
can result in measurement error or inability to properly track motion ... modeling of human diseases Patents James S. Goddard and Justin S. Baba. ...
Tracking-history-based Sleeping Policies for Wireless Sensor Networks.
??A wireless sensor network can be used to track an object. Every sensor has limited energy and detecting range. In order to conserve energy, sensors� (more)
Gau, Ding-hau
SSTARS � Safeguards and Security Tracking, Analysis and Reporting
Protecting America�s Future SSTARS is a feature-rich system for issues management and enhanced tracking and trending related to security and safety.
Stability of Multiobjective Predictive Control: An Utopia-Tracking ...
Jan 18, 2012 ... Abstract: We propose a multiobjective strategy for model predictive control (MPC) that we term utopia-tracking MPC. The controller minimizes�...
Millimeter-Wave Remote Biometric Identification and Tracking...
- Multimedia Bookmark and Share Millimeter-Wave Remote Biometric Identification and Tracking (RBIT) System for Security Applications Argonne National Laboratory and Northwestern...
ARTS - Anode & Rod Tracking System � A New Tool for ...
Abstract Scope, ARTS is a combination of an anode and rod identification and tracking system, together with a customized database and analytical software.
Efficient tracking of the state of a qubit
We study resource requirements for tracking the state of an open qubit subject to continuous observation. This problem is of great importance for quantum control.
Raisa I. Karasik; Howard M. Wiseman
Local Deformation Tracking at the Microstructural Level in Coarse ...
Presentation Title, Local Deformation Tracking at the Microstructural Level in Coarse and Ultrafine-Grained Metals. Author(s), Adam Kammers, Samantha Daly
Front Tracking Model of Simultaneous Melting and Solidification ...
This results in dynamic melting and solidification throughout the weld pool, which can be modelled using the authors' Front Tracking algorithm. Melting is�...
Tracking a Value's Influence on Later Computation | ornl.gov
Tracking a Value's Influence on Later Computation November 01, 2013 Understanding how a program behaves is important for effective program development, debugging, and optimization,...
NETL: News Release - DOE Seeks Applications for Tracking Carbon...
9, 2009 DOE Seeks Applications for Tracking Carbon Dioxide Storage in Geologic Formations Funding Opportunity Announcement Solicits Applications for Simulation, Monitoring,...
Analyzing and Tracking Burning Structures in Lean Premixed Hydrogen Flames
effects on cellular burning structures in lean premixedAnalyzing and Tracking Burning Structures in Lean Premixedthe turbulence of the burning process with the distribution
Bremer, Peer-Timo
Cross-Language Information Retrieval (CLIR) Track Overview
Page 1. Cross-Language Information Retrieval (CLIR) Track Overview Martin Braschler1, J�rgen Krause2, Carol Peters3, Peter Sch�uble4 ...
Inventory Tracking and Management: Fact Sheet | National Nuclear...
Inventory Tracking and Management: Fact Sheet Mar 23, 2012 Under International Atomic Energy Agency (IAEA) safeguards agreements, States are required to establish a "state system...
New RFID technology tracks and monitors nuclear materials | Argonne...
New RFID technology tracks and monitors nuclear materials By Jared Sagoff * March 24, 2009 Tweet EmailPrint Advancement has applications in many areas involving remote sensing...
OpenEI:Lead tracking | Open Energy Information
Lead tracking Jump to: navigation, search Solar Companies: Icon Solar Power, LLC 1 Largest PV solar panel installer in Ohio. Retrieved from "http:en.openei.orgw...
Source Tracking for Sco X-1
Sco X-1, the brightest low mass X-ray binary, is likely to be a source for gravitational wave emission. In one mechanism, emission of a gravitational wave arrests the increase in spin frequency due to the accretion torque in a low mass X-ray binary. Since the gravitational waveform is unknown, a detection method assuming no apriori knowledge of the signal is preferable. In this paper, we propose to search for a gravitational wave from Sco X-1 using a {{\\it source tracking}} method based on a coherent network analysis. In the method, we combine data from several interferometric gravitational wave detectors taking into account of the direction to Sco X-1, and reconstruct two polarization waveforms at the location of Sco X-1 in the sky as Sco X-1 is moving. The source tracking method opens up the possibility of searching for a wide variety of signals. We perform Monte Carlo simulations and show results for bursts, modeled, short duration periodic sources using a simple excess power and a matched filter method on the reconstructed signals.
Kazuhiro Hayama; Shantanu Desai; Soumya D. Mohanty; Malik Rakhmanov; Tiffany Summerscales; Sanichiro Yoshida
HCI Gesture Tracking Using Wearable Passive Tags
In this thesis, a wearable system is developed to track hand gestures with passive RFID sensor tags. This system was composed of an ultra-high frequency reader and small, passive, finger-worn tags powered by scavenged RFID energy equipped with a variety of sensors that could be used to detect gestures. The primary physical goals of the system were to be comfortable and wearable without interfering with other everyday activities. The computational goals of the system were to track particular hand movements, which could be used to control a wearable computer or aid in interaction with ubiquitous and other wearable devices. As a user is walking through their environments, we aim to avoid the need for pulling out an interface with keyboard, keypad, or touch screen, and also avoid bulky hand-held interfaces, allowing the user to specify input with their fingers without taking their eyes and attention off their immediate focus. This thesis first introduces our hardware, then gives some
Rachel M. Bainbridge; Joseph A. Paradiso
Carbothermic Reduction of Niobium Concentrate
Abstract Scope, Ferro Niobium is produced by aluminothermic reduction of the ... However, the niobium concentrate has impurities, such as phosphorus, lead and tin, ... Phase Transformation of Andalusite-Mullite and Its Fiber Reinforcement to�...
Concentrated solar power on demand
This thesis describes a new concentrating solar power central receiver system with integral thermal storage. Hillside mounted heliostats direct sunlight into a volumetric absorption molten salt pool, which also functions ...
Codd, Daniel Shawn
ARM - Measurement - Organic Carbon Concentration
govMeasurementsOrganic Carbon Concentration govMeasurementsOrganic Carbon Concentration ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Organic Carbon Concentration The concentration of carbon bound in organic compounds. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments ACSM : Aerosol Chemical Speciation Monitor Field Campaign Instruments AEROSCARBON : Aerosol Carbon Analyzer AEROSMASSSPEC : Aerosol Mass Spectrometer Datastreams AOS : Aerosol Observing System Datastreams
Concentrator Photovoltaic Systems | Department of Energy
Concentrator Photovoltaic Systems Concentrator Photovoltaic Systems August 20, 2013 - 4:12pm Addthis Concentrator photovoltaic (PV) systems use less solar cell material than other...
BP Cherry Point Congeneration Project
REVISED 404 (B) (1) REVISED 404 (B) (1) ALTERNATIVES ANALYSIS BP Cherry Point Cogeneration Project Prepared for: BP West Coast Products, LLC Revised June 29, 2004 1501 Fourth Avenue, Suite 1400 Seattle, WA 98101-1616 (206) 438-2700 33749546.05070 i TABLE OF CONTENTS Page 1.0 I NT RODUCTI ON ................................................................................................................... 1 2.0 P URPOSE AND NEE D .......................................................................................................... 1 2.1 RELIABILITY .................................................................................................... 1 2.2 COST-EFFECTIVENESS ................................................................................... 3 2.3 SIZE OF FACILITY............................................................................................
Sensor Data Processing for Tracking Underwater Threats Using Terascale Optical Core Devices
A critical aspect of littoral surveillance (including port protection) involves the localization and tracking of underwater threats such as manned or unmanned autonomous underwater vehicles. In this article, we present a methodology for locating underwater threat sources from uncertain sensor network data, and illustrate the threat tracking aspects using active sonars in a matched filter framework. The novelty of the latter paradigm lies in its implementation on a tera-scale optical core processor, EnLight , recently introduced by Lenslet Laboratories. This processor is optimized for array operations, which it performs in a fixed point arithmetic architecture at tera-scale throughput. Using the EnLight 64 prototype processor, our results (i) illustrate the ability to reach a robust tracking accuracy, and (ii) demonstrate that a considerable speed-up (a factor of over 13,000) can be achieved when compared to an Intel XeonTM processor in the computation of sets of 80K-sample complex Fourier transforms that are associated with our matched filter techniques.
Barhen, Jacob [ORNL; Imam, Neena [ORNL
Optimization of Core Point Detection in Fingerprints
This paper compares and documents the work of an optimized fingerprint core point determination algorithm. This work focuses to present an efficient and precise way for the extraction of core point. Core Point is detected using least mean square algorithm. ...
Nabeel Younus Khan; M. Younus Javed; Naveed Khattak; Umer Munir Yongjun Chang
Thermal performance evaluation of the Northrup Model NSC-01-0732 concentrating solar collector array at outdoor conditions
The thermal performance tests conducted on the Northrup Model NSC-01-0732 concentrating, tracking solar collector for approximately two months (from the end of August to the first part of October 1979) are described. These tests were made using the Marshall Space Flight Center's Solar House Test Facility.
NREL: Concentrating Solar Power Research - Concentrating Solar Power
Concentrating Solar Power Resource Maps Concentrating Solar Power Resource Maps These direct-normal solar radiation maps-filtered by solar resource and land availability-identify the most economically suitable lands available for deploying of large-scale concentrating solar power plants in the southwestern United States. Each of the following seven states, as well as the southwestern U.S. region, has two maps: the left and right maps represent analyses excluding land with slopes >1% and >3%, respectively. Lower-resolution jpg versions are available below; much higher-resolution pdf files, suitable for plotting large-scale posters, can be requested. You can also access an unfiltered direct-normal solar radiation map of the southwestern United States. Download Adobe Reader. Southwestern U.S.
Erratum: Experimental Vibrational Zero-Point Energies ...
Erratum: Experimental Vibrational Zero-Point Energies: Diatomic Molecules �J ... error in the calculated zero point energy ZPE for ... All rights reserved. ...
Concentrating Solar Power | Department of Energy
Concentrating Solar Power Concentrating Solar Power August 20, 2013 - 4:38pm Addthis Text Version This solar concentrator has a fixed-focus faceted dish with a concentration of...
Development and fabrication of a concentrating solar collector subsystem (quarterly reports)
Work done from January 1, 1978 through June 30, 1978, including several types of testing and results and evaluation of the structural design of the Northrup ''ML Series'' Concentrating Solar Collector, Model NSC-01-0732 and the Attitude Control System is reported. Efficiency tests, stagnation--defocusing tests, internal vacuum tests, pressure tests, tracking tests, fluttering tests, accelerated swivel and flexible joint life tests, and certification are described.
Interpretation of Measured Tracer Concentration Fluctuations Using a Sinusoidal Meandering Plume Model
Simultaneous instantaneous concentration and wind velocity fluctuations were measured 100 to 752 m downwind of a point source release of SF6 tracer during two field studies conducted amid rolling wheat fields and at a flat desert site in eastern ...
Holly Peterson; Brian Lamb; David Stock
Comparison of Results from a Meandering-Plume Model with Measured Atmospheric Tracer Concentration Fluctuations
Measured wind-azimuth data are used in a simple meandering-plume model to predict observed SF6 concentration fluctuations measured downwind of a point source during a range of stability conditions. The meander component of plume diffusion is ...
Cloud Condensation Nuclei and Ship Tracks
Enhancements of droplet concentrations in clouds affected by four ships were fairly accurately predicted from ship emission factors and plume and background cloud condensation nucleus (CCN) spectra. Ship exhausts thus accounted for the increased ...
James G. Hudson; Timothy J. Garrett; Peter V. Hobbs; Scott R. Strader; Yonghong Xie; Seong Soo Yum
Microsoft Word - Tracking Subgroup Minutes_030606.doc
5/2006 1 5/2006 1 TEC Rail Topic Group, Tracking Subgroup Conference Call DRAFT Monday, March 6, 2006 3 p.m. to 4 p.m. EST Group Co-Chairs: Sarah Wochos (CSG) and Bill Mackie (Western Governors Association) Participants: Joe Bell (DHS), Scott Ramsay (State of Wyoming), Marsha Keister (INEEL), Cort Richardson (CSG), Dan Johnson (State of Washington) DOE Support contractors also participated on the call. Action Items: Responsible Party Action to be Taken All Participants Review questions and provide any comments to Sarah Wochos by Thursday, March 9, 2006 Sarah Wochos Make the changes to the questionnaire and create a short discussion agenda for the March TEC meeting Summary: The purpose of this call was to finalize the questions included in the Security Topic
Tracking New Coal-Fired Power Plants
New Coal-Fired Power Plants New Coal-Fired Power Plants (data update 1/13/2012) January 13, 2012 National Energy Technology Laboratory Office of Strategic Energy Analysis & Planning Erik Shuster 2 Tracking New Coal-Fired Power Plants This report is intended to provide an overview of proposed new coal-fired power plants that are under development. This report may not represent all possible plants under consideration but is intended to illustrate the potential that exists for installation of new coal-fired power plants. Additional perspective has been added for non-coal-fired generation additions in the U.S. and coal-fired power plant activity in China. Experience has shown that public announcements of power plant developments do not provide an accurate representation of eventually
Improvements in the Placet tracking code
The tracking code PLACET simulates beam transport and orbit corrections in linear accelerators. It incorporates single- and multi-bunch effects, static and dynamic imperfections. It has an interface based on both Tcl/Tk and Octave to provide maximum flexibility and easy programming of complex scenarios. Recently, new functionalities have been added to expand its simulation and tuning capabilities, such as: tools to perform beam-based alignment of non-linear optical systems, higher order imperfections in magnets, better tools for integrated feedback loops. Moreover, self-contained frameworks have been created to ease the simulation of CLIC Drive Beam, CLIC Main Beam, and other existing electron machines such as CTF3 and FACET.
Latina, A; Dalena, B; Schulte, D; Snuverink, J
Trajectory tracking of reactor neutronic power
This paper describes period-generated control and reports its use for the trajectory tracking of reactor neutronic power. This mode of control, which was developed at the Massachusetts Institute of Technology (MIT) Research Reactor, entails computing the rate of change of the actuator signal needed to achieve a specified trajectory by first using feedback to generate a demanded inverse period (a velocity) and then substituting that inverse period into a system model. Accelerations are included in the model and provide corrective action against deviations from the specified path. The advantages of period-generation control are that it is readily implemented, that it is model based and hence addresses nonlinear systems, and that the resulting control laws may approach time-optional behavior for the special case of rate-constrained processes.
Bernard, J.A. (Massachusetts Inst. of Tech., Cambridge (United States))
Topology-adaptive interface tracking using the deformable simplicial complex
We present a novel, topology-adaptive method for deformable interface tracking, called the Deformable Simplicial Complex (DSC). In the DSC method, the interface is represented explicitly as a piecewise linear curve (in 2D) or surface (in 3D) which ... Keywords: Deformable models, surface tracking, tetrahedral meshes
Marek Krzysztof Misztal; Jakob Andreas B�rentzen
Detection and tracking of driver's hands in real time
In this paper a complete driver's hands detection and tracking system suitable for working in real time conditions has been developed. The proposed system has been successfully tested in close-real world conditions in different scenarios on a very realistic ... Keywords: automotive application, image processing, real time, tracking
Ra�l Crespo; Isaac Mart�n De Diego; Cristina Conde; Enrique Cabello
Moveable Interactive Projected Displays Using Projector Based Tracking
Video projectors have typically been used to display images on surfaces whose geometric relationship to the projector remains constant, such as walls or pre-calibrated surfaces. In this paper, we present a technique for projecting content onto moveable surfaces that adapts to the motion and location of the surface to simulate an active display. This is accomplished using a projector based location tracking techinque. We use light sensors embedded into the moveable surface and project low-perceptibility Graycoded patterns to first discover the sensor locations, and then incrementally track them at interactive rates. We describe how to reduce the perceptibility of tracking patterns, achieve interactive tracking rates, use motion modeling to improve tracking performance, and respond to sensor occlusions. A group of tracked sensors can define quadrangles for simulating moveable displays while single sensors can be used as control inputs. By unifying the tracking and display technology into a single mechanism, we can substantially reduce the cost and complexity of implementing applications that combine motion tracking and projected imagery. ACM Classification: H5.2 [Information interfaces and
Johnny C. Lee; Scott E. Hudson; Jay W. Summet; Paul H. Dietz
Camera setup optimization for optical tracking in virtual environments
In this paper we present a method for finding the optimal camera alignment for a tracking system with multiple cameras, by specifying the volume that should be tracked and an initial camera setup. The approach we use is twofold: on the one hand, we use ...
Philippe A. Cerfontaine; Marc Schirski; Daniel B�ndgens; Torsten Kuhlen
Motion capture system using single-track gray code
In this paper, we describe a high speed optical motion capture method that has a simple mechanism. We use a light shielding filter using a pattern of Single-Track Gray Code (STGC) [1] absolute encoder to take location of IR light marker tags instead ... Keywords: infrared light, motion capture, single-track gray code
Tomoko Fujii; Hideaki Nii; Takuji Tokiwa; Maki Sugimoto; Masahiko Inami
An improved front tracking method for the Euler equations
An improved front tracking method for hyperbolic conservation laws is presented. The improved method accurately resolves discontinuities as well as continuous phenomena. The method is based on an improved front interaction model for a physically more ... Keywords: 35L65, 35L67, 65M12, 76L05, 76N15, Euler equations, Front tracking, Gas dynamics, Hyperbolic conservation laws
J. A. S. Witteveen; B. Koren; P. G. Bakker
Analysis of Solar Two Heliostat Tracking Error Sources
This paper explores the geometrical errors that reduce heliostat tracking accuracy at Solar Two. The basic heliostat control architecture is described. Then, the three dominant error sources are described and their effect on heliostat tracking is visually illustrated. The strategy currently used to minimize, but not truly correct, these error sources is also shown. Finally, a novel approach to minimizing error is presented.
Jones, S.A.; Stone, K.W.
CR-39 track etching and blow up method
This invention is a method of etching tracks in CR-39 foil to obtain uniformly sized tracks. The invention comprises a step of electrochemically etching the foil at a low frequency and a ''blow-up'' step of electrochemically etching the foil at a high frequency.
Hankins, D.E.
High-Frequency Skywave Radar Track of Tropical Storm Debra
Tropical Storm Debra was tracked over a 31 h period in the Gulf of Mexico using the Wide Aperture Research Facility (WARF) high-frequency (HF) skywave radar in California. In contrast to the first WARF skywave radar tracking experiment in which ...
Joseph W. Maresca Jr.; Christopher T. Carlson
Aerial tracking of elongated objects in rural environments
In this paper, a new approach to finding and tracking various land cover boundaries such as rivers, agricultural fields, channels and roads for use in visual navigation system of an unmanned aerial vehicle is presented. We use a combination of statistical ... Keywords: Aerial video processing, Boundary tracking, Colour and texture segmentation, Robust estimation, UAV visual navigation system
B. Majidi; A. Bab-Hadiashar
On the Flexible Connection of Rigid Double-Rail Track
To facilitate the loading and discharging of rolling stocks for train ferries, a new type of flexible double-rail track was recently invented. The geometric relationship of bending parameters of the flexible track is studied theoretically. The formulation ... Keywords: Flexible connection, Rail transport, Railway, Intermodal transport, Train ferry
Xie Xinlian; Li Meng; Liu Shiyong; Wang Shaocheng
Theory of evidence for face detection and tracking
This paper deals with face detection and tracking by computer vision for multimedia applications. Contrary to current techniques that are based on huge learning databases and complex algorithms to get generic face models (e.g., active appearance models), ... Keywords: Cautious rule, Computer vision, Face tracking, LUX colour space, Particle filter, Transferable belief model
Francis Faux; Franck Luthon
A CAD model based tracking system for visually guided microassembly
We present a visual feedback method for closed loop control of automated microassembly. A CAD model based multi-camera visual tracking system that is well suited for flexible automation and assembly of complex 3D geometries was developed. The system ... Keywords: CAD, Microassembly, Micromanipulation, Visual servoing, Visual tracking
Kemal Berk Yesin; Bradley J. Nelson
Simulation Research on Coupling Vibration of Tramcar-Track
Tramcar is important railway conveying equipment in acclivitous shaft of mine. During conveying, tramcar and track often vibrate because there are some excitements. Intensive vibration often causes run-away tramcar accident, and causes deformation of ... Keywords: tramcar, track, coupling vibration, vibration control, simulation
Wenhai He
A method of reactive zoom control from uncertainty in tracking
The tuning of a constant velocity Kalman filter, used for tracking by a camera fitted with a variable focal-length lens, is shown to be preserved under a scale change in process noise if accompanied by an inverse scaling in the focal length, provided ... Keywords: Active vision, Visual tracking, Zoom control
B. J. Tordoff; D. W. Murray
Information-Theoretic Approaches for Sensor Selection and Placement in Sensor Networks for Target Localization and Tracking
pro- cessing for target tracking,� EURASIP JASP: Specialtarget local- ization and tracking and reviews the mutualestimation: Navigation and tracking applications,� Thesis of
Hanbiao Wang; Kung Yao; Deborah Estrin
Connectivity of West Coast Marine Sanctuaries: Tracking Sooty Shearwaters Throughout Dynamic Upwelling Ecosystems in the California Current System
Marine Sanctuaries: Tracking Sooty Shearwaters ThroughoutReviewed Reprints Satellite Tracking Leads to Compilation ofto analyze satellite tracking data, remote environmental
Harvey, James; Adams, Josh
processing for target tracking,� EURASIP J. Applied Signalestimation: Navigation and tracking applications,� Ph.D.for Target Localization and Tracking Hanbiao Wang, Kung Yao,
Wang, H B; Yao, K; Estrin, D
ARM - Measurement - Trace gas concentration
govMeasurementsTrace gas concentration govMeasurementsTrace gas concentration ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Trace gas concentration The amount per unit volume of trace gases other than carbon dioxide, ozone and water vapor, typically measured in conjunction with in situ aerosol measurements, e.g. carbon monoxide, nitrogen oxides, sulfur dioxide. Categories Atmospheric Carbon, Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO : Carbon Monoxide Mixing Ratio System
Hartmut Sadrozinski "Tracking Detectors for the sLHC" 5th STD Hiroshima June 2004 1 Tracking Detectors for the sLHC,
Hartmut Sadrozinski "Tracking Detectors for the sLHC" 5th STD Hiroshima June 2004 1 Tracking Sadrozinski "Tracking Detectors for the sLHC" 5th STD Hiroshima June 2004 2 sLHC, the Machine Albert De Roeck! #12;Hartmut Sadrozinski "Tracking Detectors for the sLHC" 5th STD Hiroshima June 2004 3 The s
California at Santa Cruz, University of
Track C - Market-Driven Research Solutions | Department of Energy
Track C - Market-Driven Research Solutions Track C - Market-Driven Research Solutions Track C - Market-Driven Research Solutions Presentations from Track C, Market-Driven Research Solutions of the U.S. Department of Energy Building America program's 2012 Residential Energy Efficiency Stakeholder Meeting are provided below as Adobe Acrobat PDFs. These presentations for this track covered the following topics: Outreach Initiatives; Case Studies; Technical Approach to Home Energy Management; Valuing Energy Efficiency; Software Accuracy Issues in Poorly Insulated, Leaky Homes; and New Additions to Codes. customer_focused_deploy.pdf building_america_pubs.pdf public_private_media.pdf higher_perf_cost_neutral.pdf cnt_energy_savers.pdf home_retrofits_southeast.pdf brillion_technology.pdf nonintrusive_load_monitor.pdf
India-Measurement and Performance Tracking (MAPT) Initiative | Open Energy
Measurement and Performance Tracking (MAPT) Initiative Measurement and Performance Tracking (MAPT) Initiative Jump to: navigation, search Logo: India-WRI Measurement and Performance Tracking (MAPT) Project Name India-WRI Measurement and Performance Tracking (MAPT) Project Agency/Company /Organization World Resources Institute (WRI) Sector Climate, Energy Topics Background analysis, Baseline projection, Low emission development planning, -NAMA Resource Type Case studies/examples, Guide/manual, Lessons learned/best practices, Training materials, Workshop Website http://www.wri.org/mapt Program Start 2011 Country India Southern Asia References Measurement and Performance Tracking (MAPT) Project[1] Contents 1 Overview 2 Resources 3 Partners 4 References Overview Developing countries are increasingly undertaking mitigation efforts in
Corrective Action Tracking System User's Guide | Department of Energy
Corrective Action Tracking System User's Guide Corrective Action Tracking System User's Guide Corrective Action Tracking System User's Guide September 07, 2004 Corrective Action Tracking System (CATS) User's Guide for Direct Web Access The Department of Energy (DOE) Corrective Action Management Program (CAMP) prescribes process requirements and responsibilities for DOE line managers to develop and implement corrective actions to effectively resolve safety findings arising from: Findings as identified by the Office of Independent Oversight and Performance Assurance Environment, Safety and Health and Emergency Management assessments; Judgments of Need as identified by Type A accident investigations: Other sources as directed by the Secretary or Deputy Secretary, including crosscutting safety findings. Corrective Action Tracking System User's Guide
Corrective Action Tracking System (CATS) | Department of Energy
Corrective Action Tracking System (CATS) Corrective Action Tracking System (CATS) Corrective Action Tracking System (CATS) The CATS web-based database is used to enter, track, and report the status of corrective actions developed and implemented in the DOE Corrective Action Management Program (CAMP) to effectively resolve and prevent recurrence of reported findings. The web-site includes guidance for accessing, reviewing and editing the database. NOTICE: Because of the potential sensitive nature of some information in Corrective Action Plans (CAPs) that is placed in the Department of Energy (DOE) Corrective Action Tracking System (CATS), DOE is limiting access to the CATS web site. Members of the public cannot access the CATS web site at this time. DOE regrets any inconvenience caused by this decision in
Colombia-Measurement and Performance Tracking (MAPT) Initiative | Open
Colombia-Measurement and Performance Tracking (MAPT) Initiative Colombia-Measurement and Performance Tracking (MAPT) Initiative Jump to: navigation, search Logo: Colombia-WRI Measurement and Performance Tracking (MAPT) Project Name Colombia-WRI Measurement and Performance Tracking (MAPT) Project Agency/Company /Organization World Resources Institute (WRI) Sector Climate, Energy Topics Background analysis, Baseline projection, Low emission development planning, -NAMA Resource Type Case studies/examples, Guide/manual, Lessons learned/best practices, Training materials, Workshop Website http://www.wri.org/mapt Program Start 2011 Country Colombia South America References Measurement and Performance Tracking (MAPT) Project[1] Contents 1 Overview 2 Resources 3 Partners 4 References Overview Developing countries are increasingly undertaking mitigation efforts in
Waste Shipment Tracking Technology Lowers Costs, Increases Efficiency |
Shipment Tracking Technology Lowers Costs, Increases Shipment Tracking Technology Lowers Costs, Increases Efficiency Waste Shipment Tracking Technology Lowers Costs, Increases Efficiency February 27, 2013 - 12:00pm Addthis This graphic shows how the radiofrequency identification technology tracks and monitors packages in transport, in-transit stops and storage. This graphic shows how the radiofrequency identification technology tracks and monitors packages in transport, in-transit stops and storage. The technology developed by EMâs Office of Packaging and Transportation Packaging Certification Program technology development team was selected by the RFID Journal as the "Most Innovated Use of RFIDs.â Team members pictured here include Dr. John Lee, Dr. Yung Liu, Dr. Jim Shuler, Dr. Hanchung Tsai and John Anderson. Team members not pictured are Brian Craig and Dr. Kun Chen.
Track A - Energy Systems Innovations | Department of Energy
Track A - Energy Systems Innovations Track A - Energy Systems Innovations Track A - Energy Systems Innovations Presentations from Track A, Energy Systems Innovations, of the U.S. Department of Energy Building America program's 2012 Residential Energy Efficiency Stakeholder Meeting are provided below as Adobe Acrobat PDFs. These presentations for this track covered the following topics: Space Conditioning and Hot Water Systems; Options for Insulating Foundations; Mini-split Systems; Heat Pump Water Heaters; Hydronic Heating Control Strategies; and Exterior Insulation Breakthroughs. contractor_accept.pdf testing_water_heating.pdf combined_tankless_wh.pdf upgrade_below_grade.pdf assessing_priorities.pdf industry_perspective.pdf ductless_hp_factory.pdf ductless_heat_pumps_nw.pdf field_eval_hpwh.pdf
Track B - Critical Guidance for Peak Performance Homes | Department of
Track B - Critical Guidance for Peak Performance Homes Track B - Critical Guidance for Peak Performance Homes Track B - Critical Guidance for Peak Performance Homes Presentations from Track B, Critical Guidance for Peak Performance Homes of the U.S. Department of Energy Building America program's 2012 Residential Energy Efficiency Stakeholder Meeting are provided below as Adobe Acrobat PDFs. These presentations for this track covered the following topics: Ventilation Strategies in High Performance Homes; Combustion Safety in Tight Houses; Implementation Program Case Studies; Field Testing from Start to Finish; and Humidity Control and Analysis. why_we_ventilate.pdf formaldehyde_new_homes.pdf whole_bldg_ventilation.pdf combustion_safety_codes.pdf combustion_diagnostics.pdf test_protocols_results.pdf utility_incentive_programs.pdf
Thailand-Measurement and Performance Tracking (MAPT) Initiative | Open
Thailand-Measurement and Performance Tracking (MAPT) Initiative Thailand-Measurement and Performance Tracking (MAPT) Initiative Jump to: navigation, search Logo: Thailand-WRI Measurement and Performance Tracking (MAPT) Project Name Thailand-WRI Measurement and Performance Tracking (MAPT) Project Agency/Company /Organization World Resources Institute (WRI) Sector Climate, Energy Topics Background analysis, Baseline projection, Low emission development planning, -NAMA Resource Type Case studies/examples, Guide/manual, Lessons learned/best practices, Training materials, Workshop Website http://www.wri.org/mapt Program Start 2011 Country Thailand South-Eastern Asia References Measurement and Performance Tracking (MAPT) Project[1] Contents 1 Overview 2 Resources 3 Partners 4 References Overview Developing countries are increasingly undertaking mitigation efforts in
Tracking Santa: An Interview with the Head Researcher | Department of
Tracking Santa: An Interview with the Head Researcher Tracking Santa: An Interview with the Head Researcher Tracking Santa: An Interview with the Head Researcher December 23, 2010 - 11:12am Addthis Tracking Santa: An Interview with the Head Researcher Ginny Simmons Ginny Simmons Former Managing Editor for Energy.gov, Office of Public Affairs What does this mean for me? You'll be able to start monitoring St. Nick's journey starting at 6 AM ET on Christmas Eve. Every year since 1998, the Department of Energy's Los Alamos lab has been using state of the art technology to track Santa Claus as he circles the globe the night before Christmas. You'll be able to start monitoring St. Nick's journey here starting at 6 AM ET on Christmas Eve. This week, I got a chance to talk to Santa Tracker Head Researcher (and Cibola Flight Experiment Project Leader) Diane Roussel-Dupre to get a
Mass Tracking System Software [Nuclear Waste Management using
Mass Tracking System Mass Tracking System Software Nuclear Fuel Cycle and Waste Management Technologies Overview Modeling and analysis Unit Process Modeling Mass Tracking System Software Waste Form Performance Modeling Safety Analysis, Hazard and Risk Evaluations Development, Design, Operation Overview Systems and Components Development Expertise System Engineering Design Other Major Programs Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE Division on Flickr Nuclear Waste Management using Electrometallurgical Technology Mass Tracking System Software Bookmark and Share The NE Division has developed a computer-based Mass Tracking (MTG) system, which is used at the Idaho National Laboratory Fuel Conditioning Facility (FCF) to maintain a real-time accounting of the inventory of containers and
DOE Seeks Small Businesses for Waste Tracking Contract | Department of
Seeks Small Businesses for Waste Tracking Contract Seeks Small Businesses for Waste Tracking Contract DOE Seeks Small Businesses for Waste Tracking Contract July 25, 2013 - 12:00pm Addthis Media Contact Bill Taylor, 803-952-8564 email@example.com Cincinnati - The U.S. Department of Energy (DOE) today issued a Request for Proposal (RFP) seeking Small Business Administration certified (8(a)) small business firms to provide DOE Transportation Tracking and Communications (TRANSCOM) Technical Support Services. A Requirements Contract will be awarded as a result of this RFP. The contract period of performance will be one year with four one-year option periods. The DOE TRANSCOM system continuously monitors and tracks active shipments of defense related spent nuclear fuel, radioactive/non-radioactive, hazardous, and transuranic (TRU) waste to and from DOE facilities. The