Sample records for real time monitoring

  1. Real Time Monitoring: Achieving Energy Efficiency 

    E-Print Network [OSTI]

    Rouse, S.

    2009-01-01T23:59:59.000Z

    ABSTRACT: IECBO?s International Conference for Enhanced Building Operations November 17-18, 2009 Austin, Texas. Energy @ Work www.Energy-Efficiency.com File: Rouse_ Abstract Contact: scott.rouse@energy-efficiency....com, (416) 402-0525 Proposal Type: o Electronic proposal for presentation Title of Paper: o Real Time Monitoring: Achieving Energy Efficiency! Conference: o ICEBO?s International Conference for Enhanced Building Operations Submitted by: o...

  2. Real Time Monitoring: Achieving Energy Efficiency

    E-Print Network [OSTI]

    Rouse, S.

    ABSTRACT: IECBO?s International Conference for Enhanced Building Operations November 17-18, 2009 Austin, Texas. Energy @ Work www.Energy-Efficiency.com File: Rouse_ Abstract Contact: scott.rouse@energy-efficiency....com, (416) 402-0525 Proposal Type: o Electronic proposal for presentation Title of Paper: o Real Time Monitoring: Achieving Energy Efficiency! Conference: o ICEBO?s International Conference for Enhanced Building Operations Submitted by: o...

  3. In-line real time air monitor

    DOE Patents [OSTI]

    Wise, Marcus B. (Kingston, TN); Thompson, Cyril V. (Knoxville, TN)

    1998-01-01T23:59:59.000Z

    An in-line gas monitor capable of accurate gas composition analysis in a continuous real time manner even under strong applied vacuum conditions operates by mixing an air sample with helium forming a sample gas in two complementary sample loops embedded in a manifold which includes two pairs of 3-way solenoid valves. The sample gas is then analyzed in an ion trap mass spectrometer on a continuous basis. Two valve drivers actuate the two pairs of 3-way valves in a reciprocating fashion, so that there is always flow through the in-line gas monitor via one or the other of the sample loops. The duty cycle for the two pairs of 3-way valves is varied by tuning the two valve drivers to a duty cycle typically between 0.2 to 0.7 seconds.

  4. In-line real time air monitor

    DOE Patents [OSTI]

    Wise, M.B.; Thompson, C.V.

    1998-07-14T23:59:59.000Z

    An in-line gas monitor capable of accurate gas composition analysis in a continuous real time manner even under strong applied vacuum conditions operates by mixing an air sample with helium forming a sample gas in two complementary sample loops embedded in a manifold which includes two pairs of 3-way solenoid valves. The sample gas is then analyzed in an ion trap mass spectrometer on a continuous basis. Two valve drivers actuate the two pairs of 3-way valves in a reciprocating fashion, so that there is always flow through the in-line gas monitor via one or the other of the sample loops. The duty cycle for the two pairs of 3-way valves is varied by tuning the two valve drivers to a duty cycle typically between 0.2 to 0.7 seconds. 3 figs.

  5. Instrumentation development for real time brainwave monitoring.

    SciTech Connect (OSTI)

    Anderson, Lawrence Frederick; Clough, Benjamin W.

    2005-12-01T23:59:59.000Z

    The human brain functions through a chemically-induced biological process which operates in a manner similar to electrical systems. The signal resulting from this biochemical process can actually be monitored and read using tools and having patterns similar to those found in electrical and electronics engineering. The primary signature of this electrical activity is the ''brain wave'', which looks remarkably similar to the output of many electrical systems. Likewise, the device currently used in medical arenas to read brain electrical activity is the electroencephalogram (EEG) which is synonymous with a multi-channel oscilloscope reading. Brain wave readings and recordings for medical purposes are traditionally taken in clinical settings such as hospitals, laboratories or diagnostic clinics. The signal is captured via externally applied scalp electrodes using semi-viscous gel to reduce impedance. The signal will be in the 10 to 100 microvolt range. In other instances, where surgeons are attempting to isolate particular types of minute brain signals, the electrodes may actually be temporarily implanted in the brain during a preliminary procedure. The current configurations of equipment required for EEGs involve large recording instruments, many electrodes, wires, and large amounts of hard disk space devoted to storing large files of brain wave data which are then eventually analyzed for patterns of concern. Advances in sensors, signal processing, data storage and microelectronics over the last decade would seem to have paved the way for the realization of devices capable of ''real time'' external monitoring, and possible assessment, of brain activity. A myriad of applications for such a capability are likewise presenting themselves, including the ability to assess brain functioning, level of functioning and malfunctioning. Our plan is to develop the sensors, signal processing, and portable instrumentation package which could capture, analyze, and communicate information on brain activity which could be of use to the individual, medical personnel or in other potential arenas. To take this option one step further, one might foresee that the signal would be captured, analyzed, and communicated to a person or device and which would result an action or reaction by that person or device. It is envisioned that ultimately a system would include a sensor detection mechanism, transmitter, receiver, microprocessor and associated memory, and audio and/or visual alert system. If successful in prototyping, the device could be considered for eventual implementation in ASIC form or as a fully integrated CMOS microsystem.

  6. Wide-area, real-time monitoring and visualization system

    DOE Patents [OSTI]

    Budhraja, Vikram S.; Dyer, James D.; Martinez Morales, Carlos A.

    2013-03-19T23:59:59.000Z

    A real-time performance monitoring system for monitoring an electric power grid. The electric power grid has a plurality of grid portions, each grid portion corresponding to one of a plurality of control areas. The real-time performance monitoring system includes a monitor computer for monitoring at least one of reliability metrics, generation metrics, transmission metrics, suppliers metrics, grid infrastructure security metrics, and markets metrics for the electric power grid. The data for metrics being monitored by the monitor computer are stored in a data base, and a visualization of the metrics is displayed on at least one display computer having a monitor. The at least one display computer in one said control area enables an operator to monitor the grid portion corresponding to a different said control area.

  7. Wide-area, real-time monitoring and visualization system

    DOE Patents [OSTI]

    Budhraja, Vikram S. (Los Angeles, CA); Dyer, James D. (La Mirada, CA); Martinez Morales, Carlos A. (Upland, CA)

    2011-11-15T23:59:59.000Z

    A real-time performance monitoring system for monitoring an electric power grid. The electric power grid has a plurality of grid portions, each grid portion corresponding to one of a plurality of control areas. The real-time performance monitoring system includes a monitor computer for monitoring at least one of reliability metrics, generation metrics, transmission metrics, suppliers metrics, grid infrastructure security metrics, and markets metrics for the electric power grid. The data for metrics being monitored by the monitor computer are stored in a data base, and a visualization of the metrics is displayed on at least one display computer having a monitor. The at least one display computer in one said control area enables an operator to monitor the grid portion corresponding to a different said control area.

  8. Real-time performance monitoring and management system

    DOE Patents [OSTI]

    Budhraja, Vikram S. (Los Angeles, CA); Dyer, James D. (La Mirada, CA); Martinez Morales, Carlos A. (Upland, CA)

    2007-06-19T23:59:59.000Z

    A real-time performance monitoring system for monitoring an electric power grid. The electric power grid has a plurality of grid portions, each grid portion corresponding to one of a plurality of control areas. The real-time performance monitoring system includes a monitor computer for monitoring at least one of reliability metrics, generation metrics, transmission metrics, suppliers metrics, grid infrastructure security metrics, and markets metrics for the electric power grid. The data for metrics being monitored by the monitor computer are stored in a data base, and a visualization of the metrics is displayed on at least one display computer having a monitor. The at least one display computer in one said control area enables an operator to monitor the grid portion corresponding to a different said control area.

  9. Real-time alkali monitoring system

    DOE Patents [OSTI]

    Goff, David R. (Christiansburg, VA); Romanosky, Robert R. (Prosperity, PA); Hensel, Peter (Morgantown, WV)

    1990-01-01T23:59:59.000Z

    A fiber optics based optical emission line monitoring system is provided in which selected spectral emission lines, such as the sodium emission line, may be detected in the presence of interfering background radiation. A combustion flame is fed by a diverted portion of a process stream and the common end of a bifurcated or quadfurcated fiber optic light guide is adapted to collect light from the flame. The light is guided through the branches of the fiber optic cable to bandpass filters, one of which is adapted to each of the branches of the fiber optic light guide. The bandpass filters are centered at wavelengths corresponding to the emission lines to be detected and two separate filters are required for each species being detected. The first filter has a bandwidth of about 3 nms and the second filter has a bandwidth of about 10 nms. Light detectors are located to view the light passing through the bandpass filters and amplifiers are connected to receive signals from the light detectors. The amplifier corresponding to the bandpass filter having the narrower bandwidth is preset to scale the signal by a factor equal to the ratio of the wide and narrow bandwidths of the bandpass filters. This scaling produces a scaled signal from which the difference between the scaled signal on the other signal can be calculated to produce a signal having an amplitude directly proportional to the concentration of the species of interest and independent of background radiation.

  10. Method and apparatus for real time weld monitoring

    DOE Patents [OSTI]

    Leong, Keng H. (Lemont, IL); Hunter, Boyd V. (Bolingbrook, IL)

    1997-01-01T23:59:59.000Z

    An improved method and apparatus are provided for real time weld monitoring. An infrared signature emitted by a hot weld surface during welding is detected and this signature is compared with an infrared signature emitted by the weld surface during steady state conditions. The result is correlated with weld penetration. The signal processing is simpler than for either UV or acoustic techniques. Changes in the weld process, such as changes in the transmitted laser beam power, quality or positioning of the laser beam, change the resulting weld surface features and temperature of the weld surface, thereby resulting in a change in the direction and amount of infrared emissions. This change in emissions is monitored by an IR sensitive detecting apparatus that is sensitive to the appropriate wavelength region for the hot weld surface.

  11. REAL TIME ULTRASONIC ALUMINUM SPOT WELD MONITORING SYSTEM

    SciTech Connect (OSTI)

    Regalado, W. Perez; Chertov, A. M.; Maev, R. Gr. [Institute for Diagnostic Imaging Research, Physics Department, University of Windsor, 292 Essex Hall, 401 Sunset Ave. N9B 3P4 Windsor, Ontario (Canada)

    2010-02-22T23:59:59.000Z

    Aluminum alloys pose several properties that make them one of the most popular engineering materials: they have excellent corrosion resistance, and high weight-to-strength ratio. Resistance spot welding of aluminum alloys is widely used today but oxide film and aluminum thermal and electrical properties make spot welding a difficult task. Electrode degradation due to pitting, alloying and mushrooming decreases the weld quality and adjustment of parameters like current and force is required. To realize these adjustments and ensure weld quality, a tool to measure weld quality in real time is required. In this paper, a real time ultrasonic non-destructive evaluation system for aluminum spot welds is presented. The system is able to monitor nugget growth while the spot weld is being made. This is achieved by interpreting the echoes of an ultrasound transducer located in one of the welding electrodes. The transducer receives and transmits an ultrasound signal at different times during the welding cycle. Valuable information of the weld quality is embedded in this signal. The system is able to determine the weld nugget diameter by measuring the delays of the ultrasound signals received during the complete welding cycle. The article presents the system performance on aluminum alloy AA6022.

  12. Analysis of real-time reservoir monitoring : reservoirs, strategies, & modeling.

    SciTech Connect (OSTI)

    Mani, Seethambal S.; van Bloemen Waanders, Bart Gustaaf; Cooper, Scott Patrick; Jakaboski, Blake Elaine; Normann, Randy Allen; Jennings, Jim (University of Texas at Austin, Austin, TX); Gilbert, Bob (University of Texas at Austin, Austin, TX); Lake, Larry W. (University of Texas at Austin, Austin, TX); Weiss, Chester Joseph; Lorenz, John Clay; Elbring, Gregory Jay; Wheeler, Mary Fanett (University of Texas at Austin, Austin, TX); Thomas, Sunil G. (University of Texas at Austin, Austin, TX); Rightley, Michael J.; Rodriguez, Adolfo (University of Texas at Austin, Austin, TX); Klie, Hector (University of Texas at Austin, Austin, TX); Banchs, Rafael (University of Texas at Austin, Austin, TX); Nunez, Emilio J. (University of Texas at Austin, Austin, TX); Jablonowski, Chris (University of Texas at Austin, Austin, TX)

    2006-11-01T23:59:59.000Z

    The project objective was to detail better ways to assess and exploit intelligent oil and gas field information through improved modeling, sensor technology, and process control to increase ultimate recovery of domestic hydrocarbons. To meet this objective we investigated the use of permanent downhole sensors systems (Smart Wells) whose data is fed real-time into computational reservoir models that are integrated with optimized production control systems. The project utilized a three-pronged approach (1) a value of information analysis to address the economic advantages, (2) reservoir simulation modeling and control optimization to prove the capability, and (3) evaluation of new generation sensor packaging to survive the borehole environment for long periods of time. The Value of Information (VOI) decision tree method was developed and used to assess the economic advantage of using the proposed technology; the VOI demonstrated the increased subsurface resolution through additional sensor data. Our findings show that the VOI studies are a practical means of ascertaining the value associated with a technology, in this case application of sensors to production. The procedure acknowledges the uncertainty in predictions but nevertheless assigns monetary value to the predictions. The best aspect of the procedure is that it builds consensus within interdisciplinary teams The reservoir simulation and modeling aspect of the project was developed to show the capability of exploiting sensor information both for reservoir characterization and to optimize control of the production system. Our findings indicate history matching is improved as more information is added to the objective function, clearly indicating that sensor information can help in reducing the uncertainty associated with reservoir characterization. Additional findings and approaches used are described in detail within the report. The next generation sensors aspect of the project evaluated sensors and packaging survivability issues. Our findings indicate that packaging represents the most significant technical challenge associated with application of sensors in the downhole environment for long periods (5+ years) of time. These issues are described in detail within the report. The impact of successful reservoir monitoring programs and coincident improved reservoir management is measured by the production of additional oil and gas volumes from existing reservoirs, revitalization of nearly depleted reservoirs, possible re-establishment of already abandoned reservoirs, and improved economics for all cases. Smart Well monitoring provides the means to understand how a reservoir process is developing and to provide active reservoir management. At the same time it also provides data for developing high-fidelity simulation models. This work has been a joint effort with Sandia National Laboratories and UT-Austin's Bureau of Economic Geology, Department of Petroleum and Geosystems Engineering, and the Institute of Computational and Engineering Mathematics.

  13. Real time monitoring of multiple wells flowing under pseudosteady state condition by using Kalman filtering

    E-Print Network [OSTI]

    Jacob, Suresh

    2002-01-01T23:59:59.000Z

    This work develops a method for the real time monitoring of well performance by using Kalman filtering. A system of two or more wells draining the same reservoir under pseudo steady state condition is monitored simultaneously to estimate both...

  14. A (Smart) Real-time PMU-assisted Power Transfer Limitation Monitoring

    E-Print Network [OSTI]

    Stability Analysis (DSA) Energy Management System (EMS) Real-Time Network Information DiagnosticA (Smart) Real-time PMU-assisted Power Transfer Limitation Monitoring and Enhancement System) · PJM's On-line Available transfer capability monitoring system and (smart) enhancements (i.e. increase

  15. A real-time intercepting beam-profile monitor for a medical cyclotron

    SciTech Connect (OSTI)

    Hendriks, C.; Uittenbosch, T.; Cameron, D.; Kellogg, S.; Gray, D.; Buckley, K.; Schaffer, P.; Verzilov, V.; Hoehr, C. [TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3 (Canada)] [TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3 (Canada)

    2013-11-15T23:59:59.000Z

    There is a lack of real-time continuous beam-diagnostic tools for medical cyclotrons due to high power deposition during proton irradiation. To overcome this limitation, we have developed a profile monitor that is capable of providing continuous feedback about beam shape and current in real time while it is inserted in the beam path. This enables users to optimize the beam profile and observe fluctuations in the beam over time with periodic insertion of the monitor.

  16. System for remote multichannel real-time monitoring of mouse ECG via the Internet

    E-Print Network [OSTI]

    Oefinger, Matthew Blake, 1976-

    2003-01-01T23:59:59.000Z

    A hardware/software system was developed to allow real-time monitoring of multiple physiological signals simultaneously via the Internet. The hardware is specifically designed for measuring ECG signals from mice, while the ...

  17. Real-time monitoring of complex industrial processes with particle filters

    E-Print Network [OSTI]

    Poole, David

    Real-time monitoring of complex industrial processes with particle filters Rub´en Morales-Men, open air-flow grill and clean temperature sensor (we denote this discrete state ¢¡¤£ ¥ ). We induced 3

  18. Real-time monitoring of homoepitaxial and heteroepitaxial processes by p-polarized reflectance spectroscopy

    E-Print Network [OSTI]

    Dietz, Nikolaus

    of heteroepitaxial and the homoepitaxial growth. Tertiary-butylphosphine TBP and triethylgallium TEG beams of the epilayer due to the pyrolysis of the TBP and TEG molecules.1 For the real-time monitoring of GaP growth we

  19. Sensing Requirements for Real-Time Monitoring and Control in Energy Production

    E-Print Network [OSTI]

    Ghosh, Ruby N.

    of coal (syngas), requires physical and chemical sensors for exhaust gas monitoring as well as real-time control of the combustion process. Following a description of syngas production from coal, we outline species at 630 °C. Our SiC sensor can monitor the hydrogen concentration in a 350 °C simulated syngas

  20. SYTMIS: SOFTWARE FOR REAL-TIME MICROSEISMIC MONITORING SYSTEMS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    industries, hydrocarbon fields; Underground gas-storage reservoirs, radioactive waste; studies of seismic to fulfil most field situations, SYTMIS also permit multiple moni- toring from an unique central site approach in such varied fields äs: the monitoring of rock masses and local subsidences: extractive

  1. Microwave Plasma Monitoring System For Real-Time Elemental Analysis

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA / USACE625Data ShowC -9Microwave Plasma Monitoring

  2. A Study of Real-Time Identification and Monitoring of Barge-Carried Hazardous Commodities

    E-Print Network [OSTI]

    A Study of Real-Time Identification and Monitoring of Barge-Carried Hazardous Commodities Yangrong 37831 Abstract-- In response to increased terrorist threats related to hazardous material movements and field test a prototype system that provides more accurate, uniform, and timely data on hazardous

  3. Real Time Flame Monitoring of Gasifier and Injectors

    SciTech Connect (OSTI)

    Zelepouga, Serguei; Saveliev, Alexei

    2011-12-31T23:59:59.000Z

    This project is a multistage effort with the final goal to develop a practical and reliable nonintrusive gasifier injector monitor to assess burner wear and need for replacement. The project team included the National Energy Technology Laboratory (NETL), Gas Technology Institute (GTI), North Carolina State University, and ConocoPhillips. This report presents the results of the sensor development and testing initially at GTI combustion laboratory with natural gas flames, then at the Canada Energy Technology Center (CANMET), Canada in the atmospheric coal combustor as well as in the pilot scale pressurized entrained flow gasifier, and finally the sensor capabilities were demonstrated at the Pratt and Whitney Rocketdyne (PWR) Gasifier and the Wabash River Repowering plant located in West Terre Haute, IN. The initial tests demonstrated that GTI gasifier sensor technology was capable of detecting shape and rich/lean properties of natural gas air/oxygen enriched air flames. The following testing at the Vertical Combustor Research Facility (VCRF) was a logical transition step from the atmospheric natural gas flames to pressurized coal gasification environment. The results of testing with atmospheric coal flames showed that light emitted by excited OH* and CH* radicals in coal/air flames can be detected and quantified. The maximum emission intensities of OH*, CH*, and black body (char combustion) occur at different axial positions along the flame length. Therefore, the excitation rates of CH* and OH* are distinct at different stages of coal combustion and can be utilized to identify and characterize processes which occur during coal combustion such as devolatilization, char heating and burning. To accomplish the goals set for Tasks 4 and 5, GTI utilized the CANMET Pressurized Entrained Flow Gasifier (PEFG). The testing parameters of the PEFG were selected to simulate optimum gasifier operation as well as gasifier conditions normally resulting from improper operation or failed gasifier injectors. The sensor developed under previous tasks was used to assess the spectroscopic characteristics of the gasifier flame. The obtained spectral data were successfully translated into flame temperature measurements. It was also demonstrated that the reduced spectral data could be very well correlated with very important gasification process parameters such as the air/fuel and water/fuel ratio. Any of these parameters (temperature, air/fuel, and water/fuel) is sufficient to assess burner wear; however, the tested sensor was capable of monitoring all three of them plus the flame shape as functions of burner wear. This will likely be a very powerful tool which should enable significant improvements in gasifier efficiency, reliability, and availability. The sensor technology was presented to the projectâ??s industrial partner (ConocoPhillips). The partner expressed its strong interest in continuing to participate in the field validation phase of GTI's Flame Monitor Project. Finally the sensor was tested in the PWR (Pratt & Whitney Rocketdyne) gasification plant located at GTIâ??s research campus and at the ConocoPhillips industrial scale gasifier at Wabash River Indiana. The field trials of the GTI Gasifier sensor modified to withstand high temperature and pressure corrosive atmosphere of the industrial entrain flow gasifier. The project team successfully demonstrated the Gasifier Sensor system ability to monitor gasifier interior temperature maintaining unobstructed optical access for in excess of six week without any maintenance. The sensor examination upon completion of the trial revealed that the system did not sustain any damage and required minor cleanup of the optics.

  4. New and Emerging Technologies for Real-Time Air and Surface Beryllium Monitoring

    SciTech Connect (OSTI)

    Phifer, B.E. Jr.; Churnetski, E.L.; Cooke, L.E.; Reed, J.J.; Howell, M.L.; Smith, V.D.

    2001-09-01T23:59:59.000Z

    In this study, five emerging technologies were identified for real-time monitoring of airborne beryllium: Microwave-Induced Plasma Spectroscopy (MIPS), Aerosol Beam-Focused Laser-Induced Plasma Spectroscopy (ABFLIPS), Laser-Induced Breakdown Spectroscopy (LIBS), Surfaced-Enhanced Raman Scattering (SERS) Spectroscopy, and Micro-Calorimetric Spectroscopy (CalSpec). Desired features of real-time air beryllium monitoring instrumentation were developed from the Y-12 CBDPP. These features were used as guidelines for the identification of potential technologies as well as their unique demonstrated capability to provide real-time monitoring of similar materials. However, best available technologies were considered, regardless of their ability to comply with the desired features. None of the five technologies have the capability to measure the particle size of airborne beryllium. Although reducing the total concentration of airborne beryllium is important, current literature suggests that reducing or eliminating the concentration of respirable beryllium is critical for worker health protection. Eight emerging technologies were identified for surface monitoring of beryllium. CalSpec, MIPS, SERS, LIBS, Laser Ablation, Absorptive Stripping Voltametry (ASV), Modified Inductively Coupled Plasma (ICP) Spectroscopy, and Gamma BeAST. Desired features of real-time surface beryllium monitoring were developed from the Y-12 CBDPP. These features were used as guidelines for the identification of potential technologies. However, the best available technologies were considered regardless of their ability to comply with the desired features.

  5. DISTRIBUTED REAL-TIME TASK MONITORING IN THE SAFETY-CRITICAL SYSTEM MELODY

    E-Print Network [OSTI]

    Wedde, Horst F.

    -critical systems (such as nuclear power plants, distributed cooperation of autonomous robots in Outer Space that are typi- cally unpredictable, a very high amount of adaptability of sys- tem functions is demanded. SafetyDISTRIBUTED REAL-TIME TASK MONITORING IN THE SAFETY-CRITICAL SYSTEM MELODY Horst F. Wedde, Jon A

  6. Real-Time Deep-Ocean Tsunami Measuring, Monitoring, and Reporting System

    E-Print Network [OSTI]

    identified the requirements of the tsunami measurement system through evolution in both technologyReal-Time Deep-Ocean Tsunami Measuring, Monitoring, and Reporting System: The NOAA DART II the system components that make up the second-generation Deep-Ocean Assessment and Reporting of Tsunamis

  7. REAL-TIME, WEB BASED ENERGY MONITORING SYSTEM FOR A SOLAR ACADEMIC BUILDING John H. Scofield

    E-Print Network [OSTI]

    Scofield, John H.

    Field Station incorporates passive solar cooling and active solar heating, maximizes ergonomicREAL-TIME, WEB BASED ENERGY MONITORING SYSTEM FOR A SOLAR ACADEMIC BUILDING John H. Scofield. The Leslie Shao-ming Sun Field Station is a 9,800 sf single- story building designed to help Jasper Ridge

  8. Cover sheet Real-time health monitoring of historic buildings with wireless sensor networks

    E-Print Network [OSTI]

    Picco, Gian Pietro

    Cover sheet Title: Real-time health monitoring of historic buildings with wireless sensor networks of a wireless sensor network (WSN) in Torre Aquila, a 31 meter-tall medieval tower located in the city of Trento agreement. INTRODUCTION Wireless sensors and wireless sensing networks, due to their low installation cost

  9. Energy Metering for Free: Augmenting Switching Regulators for Real-Time Monitoring

    E-Print Network [OSTI]

    Energy Metering for Free: Augmenting Switching Regulators for Real-Time Monitoring Prabal Dutta of Technology Berkeley, CA 94720 Cambridge, MA 02139 Abstract We present iCount, a new energy meter design. For many systems that have a built-in switching regulator, adding a single wire between the regulator

  10. REAL-TIME STRUCTURAL DAMAGE DETECTION USING WIRELESS SENSING AND MONITORING SYSTEM

    E-Print Network [OSTI]

    Stanford University

    REAL-TIME STRUCTURAL DAMAGE DETECTION USING WIRELESS SENSING AND MONITORING SYSTEM Kung-Chun Lu1 Professor, Department of Civil & Environmental Engineering, University of Michigan, Ann Arbor, MI 48109, USA, jerlynch@umich.edu 5 Professor, Department of Civil & Environmental Engineering, Stanford University

  11. A Study of Publish/Subscribe Systems for Real-Time Grid Monitoring Chenxi Huang, Peter R. Hobson, Gareth A. Taylor

    E-Print Network [OSTI]

    Taylor, Gary

    monitoring is a distributed soft real-time monitoring system. Most of the data for monitoring should1 A Study of Publish/Subscribe Systems for Real-Time Grid Monitoring Chenxi Huang, Peter R. Hobson terms ­ monitoring, real time systems, distributed computing, grid computing, publish/subscribe system I

  12. Real-time fracture monitoring in Engineered Geothermal Systems with seismic waves

    SciTech Connect (OSTI)

    Jose A. Rial; Jonathan Lees

    2009-03-31T23:59:59.000Z

    As proposed, the main effort in this project is the development of software capable of performing real-time monitoring of micro-seismic activity recorded by an array of sensors deployed around an EGS. The main milestones are defined by the development of software to perform the following tasks: • Real-time micro-earthquake detection and location • Real-time detection of shear-wave splitting • Delayed-time inversion of shear-wave splitting These algorithms, which are discussed in detail in this report, make possible the automatic and real-time monitoring of subsurface fracture systems in geothermal fields from data collected by an array of seismic sensors. Shear wave splitting (SWS) is parameterized in terms of the polarization of the fast shear wave and the time delay between the fast and slow shear waves, which are automatically measured and stored. The measured parameters are then combined with previously measured SWS parameters at the same station and used to invert for the orientation (strike and dip) and intensity of cracks under that station. In addition, this grant allowed the collection of seismic data from several geothermal regions in the US (Coso) and Iceland (Hengill) to use in the development and testing of the software.

  13. Potentiometric Sensor for Real-Time Monitoring of Multivalent Ion Concentrations in Molten Salt

    SciTech Connect (OSTI)

    Peter A. Zink; Jan-Fong Jue; Brenda E. Serrano; Guy L. Fredrickson; Ben F. Cowan; Steven D. Herrmann; Shelly X. Li

    2010-07-01T23:59:59.000Z

    Electrorefining of spent metallic nuclear fuel in high temperature molten salt systems is a core technology in pyroprocessing, which in turn plays a critical role in the development of advanced fuel cycle technologies. In electrorefining, spent nuclear fuel is treated electrochemically in order to effect separations between uranium, noble metals, and active metals, which include the transuranics. The accumulation of active metals in a lithium chloride-potassium chloride (LiCl-KCl) eutectic molten salt electrolyte occurs at the expense of the UCl3-oxidant concentration in the electrolyte, which must be periodically replenished. Our interests lie with the accumulation of active metals in the molten salt electrolyte. The real-time monitoring of actinide concentrations in the molten salt electrolyte is highly desirable for controlling electrochemical operations and assuring materials control and accountancy. However, real-time monitoring is not possible with current methods for sampling and chemical analysis. A new solid-state electrochemical sensor is being developed for real-time monitoring of actinide ion concentrations in a molten salt electrorefiner. The ultimate function of the sensor is to monitor plutonium concentrations during electrorefining operations, but in this work gadolinium was employed as a surrogate material for plutonium. In a parametric study, polycrystalline sodium beta double-prime alumina (Na-ß?-alumina) discs and tubes were subject to vapor-phase exchange with gadolinium ions (Gd3+) using a gadolinium chloride salt (GdCl3) as a precursor to produce gadolinium beta double-prime alumina (Gd-ß?-alumina) samples. Electrochemical impedance spectroscopy and microstructural analysis were performed on the ion-exchanged discs to determine the relationship between ion exchange and Gd3+ ion conductivity. The ion-exchanged tubes were configured as potentiometric sensors in order to monitor real-time Gd3+ ion concentrations in mixtures of gadolinium chloride (GdCl3) in LiCl-KCl eutectic molten salts through measurement of the potential difference between a reference and working electrode.

  14. Application of real-time monitoring in decision making: The new Bedford Harbor pilot dredging project

    SciTech Connect (OSTI)

    Nelson, W.G.

    1994-01-01T23:59:59.000Z

    A decision-making framework was established for assessing the impacts of a pilot dredging study at the New Bedford Harbor, MA, Superfund site. Concern over possible environmental impacts due to dredging at the site necessitated that a monitoring program be implemented to ensure that unacceptable water quality impacts did not occur during the project. A committee of environmental managers from Federal and state government was established with the authority to assess and modify the operation on a daily basis. Finally, a 'real-time' monitoring plan was implemented in which water samples were collected, analyzed within 16 hours, and the data supplied to the management committee in order to assess the environmental impact of the previous days' operation. The combined use of site-specific criteria and a real-time' decision making management process allowed for successful completion of the project with a minimal effect on water quality.

  15. A real-time applicator position monitoring system for gynecologic intracavitary brachytherapy

    SciTech Connect (OSTI)

    Xia, Junyi, E-mail: junyi-xia@uiowa.edu; Waldron, Timothy; Kim, Yusung [Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242 (United States)] [Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242 (United States)

    2014-01-15T23:59:59.000Z

    Purpose: To develop a real-time applicator position monitoring system (RAPS) for intracavitary brachytherapy using an infrared camera and reflective markers. Methods: 3D image-guided brachytherapy requires high accuracy of applicator localization; however, applicator displacement can happen during patient transfer for imaging and treatment delivery. No continuous applicator position monitoring system is currently available. The RAPS system was developed for real-time applicator position monitoring without additional radiation dose to patients. It includes an infrared camera, reflective markers, an infrared illuminator, and image processing software. After reflective markers are firmly attached to the applicator and the patient body, applicator displacement can be measured by computing the relative change in distance between the markers. The reflective markers are magnetic resonance imaging (MRI) compatible, which is suitable for MRI-guided HDR brachytherapy paradigm. In our prototype, a Microsoft Kinect sensor with a resolution of 640 by 480 pixels is used as an infrared camera. A phantom study was carried out to compare RAPS' measurements with known displacements ranging from ?15 to +15 mm. A reproducibility test was also conducted. Results: The RAPS can achieve 4 frames/s using a laptop with Intel{sup ®} Core™2 Duo processor. When the pixel size is 0.95 mm, the difference between RAPS' measurements and known shift values varied from 0 to 0.8 mm with the mean value of 0.1 mm and a standard deviation of 0.44 mm. The system reproducibility was within 0.6 mm after ten reposition trials. Conclusions: This work demonstrates the feasibility of a real-time infrared camera based gynecologic intracavitary brachytherapy applicator monitoring system. Less than 1 mm accuracy is achieved when using an off-the-shelf infrared camera.

  16. In-Situ Real Time Monitoring and Control of Mold Making and Filling Processes: Final Report

    SciTech Connect (OSTI)

    Mohamed Abdelrahman; Kenneth Currie

    2010-12-22T23:59:59.000Z

    This project presents a model for addressing several objectives envisioned by the metal casting industries through the integration of research and educational components. It provides an innovative approach to introduce technologies for real time characterization of sand molds, lost foam patterns and monitoring of the mold filling process. The technology developed will enable better control over the casting process. It is expected to reduce scrap and variance in the casting quality. A strong educational component is integrated into the research plan to utilize increased awareness of the industry professional, the potential benefits of the developed technology, and the potential benefits of cross cutting technologies.

  17. REAL-TIME TRACER MONITORING OF RESERVOIR STIMULATION PROCEDURES VIA ELECTRONIC WIRELINE AND TELEMETRY DATA TRANSMISSION

    SciTech Connect (OSTI)

    George L. Scott III

    2005-01-01T23:59:59.000Z

    Finalized Phase 2-3 project work has field-proven two separate real-time reservoir processes that were co-developed via funding by the National Energy Technology Laboratory (NETL). Both technologies are presently patented in the United States and select foreign markets; a downhole-commingled reservoir stimulation procedure and a real-time tracer-logged fracturing diagnostic system. Phase 2 and early Phase 3 project work included the research, development and well testing of a U.S. patented gamma tracer fracturing diagnostic system. This stimulation logging process was successfully field-demonstrated; real-time tracer measurement of fracture height while fracturing was accomplished and proven technically possible. However, after the initial well tests, there were several licensing issues that developed between service providers that restricted and minimized Realtimezone's (RTZ) ability to field-test the real-time gamma diagnostic system as was originally outlined for this project. Said restrictions were encountered after when one major provider agreed to license their gamma logging tools to another. Both of these companies previously promised contributory support toward Realtimezone's DE-FC26-99FT40129 project work, however, actual support was less than desired when newly-licensed wireline gamma logging tools from one company were converted by the other from electric wireline into slickline, batter-powered ''memory'' tools for post-stimulation logging purposes. Unfortunately, the converted post-fracture measurement memory tools have no applications in experimentally monitoring real-time movement of tracers in the reservoir concurrent with the fracturing treatment. RTZ subsequently worked with other tracer gamma-logging tool companies for basic gamma logging services, but with lessened results due to lack of multiple-isotope detection capability. In addition to real-time logging system development and well testing, final Phase 2 and Phase 3 project work included the development of a real-time reservoir stimulation procedure, which was successfully field-demonstrated and is presently patented in the U.S. and select foreign countries, including Venezuela, Brazil and Canada. Said patents are co-owned by RTZ and the National Energy Technology Lab (NETL). In 2002, Realtimezone and the NETL licensed said patents to Halliburton Energy Services (HES). Additional licensing agreements (LA) are anticipated with other service industry companies in 2005. Final Phase 3 work has led to commercial applications of the real-time reservoir stimulation procedure. Four successfully downhole-mixed well tests were conducted with commercially expected production results. The most recent, fourth field test was a downhole-mixed stimulated well completed in June, 2004, which currently produces 11 BOPD with 90 barrels of water per day. Conducted Phase 2 and Phase 3 field-test work to date has resulted in the fine-tuning of a real-time enhanced stimulation system that will significantly increase future petroleum well recoveries in the United States and foreign petroleum fields, both onshore and offshore, and in vertical and horizontal wells.

  18. Real-Time Detection Methods to Monitor TRU Compositions in UREX+Process Streams

    SciTech Connect (OSTI)

    McDeavitt, Sean; Charlton, William; Indacochea, J Ernesto; taleyarkhan, Rusi; Pereira, Candido

    2013-03-01T23:59:59.000Z

    The U.S. Department of Energy has developed advanced methods for reprocessing spent nuclear fuel. The majority of this development was accomplished under the Advanced Fuel Cycle Initiative (AFCI), building on the strong legacy of process development R&D over the past 50 years. The most prominent processing method under development is named UREX+. The name refers to a family of processing methods that begin with the Uranium Extraction (UREX) process and incorporate a variety of other methods to separate uranium, selected fission products, and the transuranic (TRU) isotopes from dissolved spent nuclear fuel. It is important to consider issues such as safeguards strategies and materials control and accountability methods. Monitoring of higher actinides during aqueous separations is a critical research area. By providing on-line materials accountability for the processes, covert diversion of the materials streams becomes much more difficult. The importance of the nuclear fuel cycle continues to rise on national and international agendas. The U.S. Department of Energy is evaluating and developing advanced methods for safeguarding nuclear materials along with instrumentation in various stages of the fuel cycle, especially in material balance areas (MBAs) and during reprocessing of used nuclear fuel. One of the challenges related to the implementation of any type of MBA and/or reprocessing technology (e.g., PUREX or UREX) is the real-time quantification and control of the transuranic (TRU) isotopes as they move through the process. Monitoring of higher actinides from their neutron emission (including multiplicity) and alpha signatures during transit in MBAs and in aqueous separations is a critical research area. By providing on-line real-time materials accountability, diversion of the materials becomes much more difficult. The objective of this consortium was to develop real time detection methods to monitor the efficacy of the UREX+ process and to safeguard the separated TRUs against unlawful diversion from within a processing facility. To achieve this, a comprehensive strategy was implemented to incorporate traditional detectors and advanced Tensioned Metastable Fluid (TMFD) metastable fluid detectors (developed, in part, under this project) into a novel detector assembly coupled to the UREX+ centrifugal contactor array. The sections below provide a brief summary of the technical achievements completed during this project. The principal outcomes are documented in more complete details contained the doctoral dissertations and masters theses, journal papers, conference proceedings and additional items for more than the 35 publications that are listed in the program bibliography in Section 3.

  19. Unattended monitoring system at a static storage area with real-time event notification.

    SciTech Connect (OSTI)

    West, J. D. (James D.); Betts, S. E. (Stephen E.); Michel, K. D. (Kelly D.); Schanfein, M. J. (Mark J.); Ricketts, T. E. (Thomas E.)

    2005-01-01T23:59:59.000Z

    Domestic Safeguards at Los Alamos National Laboratory (LANL) and throughout the Department of Energy (DOE)/National Nuclear Security Administration (NNSA) complex has historically relied on administrative and non-integrated approaches to implement nuclear safeguards at its facilities. Besides the heavy cost born by the facility and the compliance oversight organization, the safeguards assurance is only periodic, potentially allowing an adversary a longer time before detection. Even after detection, the lack of situational awareness makes it difficult to assess events. By leveraging unattended monitoring systems (UMS) used by the International Atomic Energy Agency (IAEA), we have designed a baseline system that has high reliability through fault tolerant designs for both hardware and software. Applying IAEA design goals to assure no loss of data and using a dual containment strategy, this system is a first step in implementing modern safeguards monitoring systems at LANL and, hopefully, applications at other DOE/NNSA sites. This paper will review the design requirements and how they will be met, to provide a real-time event notification for a static storage location. The notification system triggers communications to pagers and email addresses for a fast response by facility personnel to the violation of a defined safeguards exclusion zone. Since the system has to be installed in an existing facility, the challenges to the designers will be presented. Aside from the initial baseline system that relies on surveillance cameras and seals, other optional upgrades will be detailed, showing both the power and the promise of unattended systems for domestic safeguards. We will also include a short discussion of the business obstacles to modernizing safeguards and how a UMS system may be applied to dynamic activities at a nuclear facility. Ultimately, the current lack of such modern monitoring systems reflects the many business obstacles internal to DOE/NNSA to the use of modern safeguards in the DOE Complex.

  20. On-Line Thermal Barrier Coating Monitoring for Real-Time Failure Protection and Life Maximization

    SciTech Connect (OSTI)

    Dennis H. LeMieux

    2005-04-01T23:59:59.000Z

    Under the sponsorship of the U. S. Department of Energy's National Energy Laboratory, Siemens Westinghouse Power Corporation proposes a four year program titled, ''On-Line Thermal Barrier Coating (TBC) Monitor for Real-Time Failure Protection and Life Maximization'', to develop, build and install the first generation of an on-line TBC monitoring system for use on land-based advanced gas turbines (AGT). Federal deregulation in electric power generation has accelerated power plant owner's demand for improved reliability availability maintainability (RAM) of the land-based advanced gas turbines. As a result, firing temperatures have been increased substantially in the advanced turbine engines, and the TBCs have been developed for maximum protection and life of all critical engine components operating at these higher temperatures. Losing TBC protection can therefore accelerate the degradation of substrate components materials and eventually lead to a premature failure of critical component and costly unscheduled power outages. This program seeks to substantially improve the operating life of high cost gas turbine components using TBC; thereby, lowering the cost of maintenance leading to lower cost of electricity. Siemens Westinghouse Power Corporation has teamed with Indigo Systems, a supplier of state-of-the-art infrared camera systems, and Wayne State University, a leading research organization in the field of infrared non-destructive examination (NDE), to complete the program.

  1. A multichannel, real-time MRI RF power monitor for independent SAR determination

    SciTech Connect (OSTI)

    El-Sharkawy, AbdEl-Monem M.; Qian Di; Bottomley, Paul A.; Edelstein, William A. [Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins, University School of Medicine, Baltimore, Maryland 21287 (United States); Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins, University School of Medicine, Baltimore, Maryland 21287 (United States) and Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, Maryland 21287 (United States); Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins, University School of Medicine, Baltimore, Maryland 21287 (United States)

    2012-05-15T23:59:59.000Z

    Purpose: Accurate measurements of the RF power delivered during clinical MRI are essential for safety and regulatory compliance, avoiding inappropriate restrictions on clinical MRI sequences, and for testing the MRI safety of peripheral and interventional devices at known RF exposure levels. The goal is to make independent RF power measurements to test the accuracy of scanner-reported specific absorption rate (SAR) over the extraordinary range of operating conditions routinely encountered in MRI. Methods: A six channel, high dynamic range, real-time power profiling system was designed and built for monitoring power delivery during MRI up to 440 MHz. The system was calibrated and used in two 3 T scanners to measure power applied to human subjects during MRI scans. The results were compared with the scanner-reported SAR. Results: The new power measurement system has highly linear performance over a 90 dB dynamic range and a wide range of MRI duty cycles. It has about 0.1 dB insertion loss that does not interfere with scanner operation. The measurements of whole-body SAR in volunteers showed that scanner-reported SAR was significantly overestimated by up to about 2.2 fold. Conclusions: The new power monitor system can accurately and independently measure RF power deposition over the wide range of conditions routinely encountered during MRI. Scanner-reported SAR values are not appropriate for setting exposure limits during device or pulse sequence testing.

  2. Effect of Body Mass Index on Intrafraction Prostate Displacement Monitored by Real-Time Electromagnetic Tracking

    SciTech Connect (OSTI)

    Butler, Wayne M., E-mail: wbutler@wheelinghospital.org [Schiffler Cancer Center, Wheeling Hospital, Wheeling, West Virginia (United States); Wheeling Jesuit University, Wheeling, West Virginia (United States); Morris, Mallory N. [Schiffler Cancer Center, Wheeling Hospital, Wheeling, West Virginia (United States)] [Schiffler Cancer Center, Wheeling Hospital, Wheeling, West Virginia (United States); Merrick, Gregory S. [Schiffler Cancer Center, Wheeling Hospital, Wheeling, West Virginia (United States) [Schiffler Cancer Center, Wheeling Hospital, Wheeling, West Virginia (United States); Wheeling Jesuit University, Wheeling, West Virginia (United States); Kurko, Brian S.; Murray, Brian C. [Schiffler Cancer Center, Wheeling Hospital, Wheeling, West Virginia (United States)] [Schiffler Cancer Center, Wheeling Hospital, Wheeling, West Virginia (United States)

    2012-10-01T23:59:59.000Z

    Purpose: To evaluate, using real-time monitoring of implanted radiofrequency transponders, the intrafraction prostate displacement of patients as a function of body mass index (BMI). Methods and Materials: The motions of Beacon radiofrequency transponders (Calypso Medical Technologies, Seattle, WA) implanted in the prostate glands of 66 men were monitored throughout the course of intensity modulated radiation therapy. Data were acquired at 10 Hz from setup to the end of treatment, but only the 1.7 million data points with a 'beam on' tag were used in the analysis. There were 21 obese patients, with BMI {>=}30 and 45 nonobese patients in the study. Results: Mean displacements were least in the left-right lateral direction (0.56 {+-} 0.24 mm) and approximately twice that magnitude in the superior-inferior and anterior-posterior directions. The net vector displacement was larger still, 1.95 {+-} 0.47 mm. Stratified by BMI cohort, the mean displacements per patient in the 3 Cartesian axes as well as the net vector for patients with BMI {>=}30 were slightly less (<0.2 mm) but not significantly different than the corresponding values for patients with lower BMIs. As a surrogate for the magnitude of oscillatory noise, the standard deviation for displacements in all measured planes showed no significant differences in the prostate positional variability between the lower and higher BMI groups. Histograms of prostate displacements showed a lower frequency of large displacements in obese patients, and there were no significant differences in short-term and long-term velocity distributions. Conclusions: After patients were positioned accurately using implanted radiofrequency transponders, the intrafractional displacements in the lateral, superior-inferior, and anterior-posterior directions as well as the net vector displacements were smaller, but not significantly so, for obese men than for those with lower BMI.

  3. Near-Real-Time Acoustic Monitoring of Beaked Whales and Other Cetaceans Using a SeagliderTM

    E-Print Network [OSTI]

    Baird, Robin W.

    temporal and spatial resolution in near-real time. Here we describe an autonomous underwater vehicle for new, cost- effective tools that allow scientists to monitor areas of interest autonomously with high anthropogenic activities such as seismic exploration for sub-sea fossil fuels or naval sonar exercises

  4. Profiling Real-Time Electricity Consumption Data for Process Monitoring and Control

    SciTech Connect (OSTI)

    Omitaomu, Olufemi A [ORNL

    2013-01-01T23:59:59.000Z

    Today, smart meters serve as key assets to utilities and their customers because they are capable of recording and communicating real-time energy usage data; thus, enabling better understanding of energy usage patterns. Other potential benefits of smart meters data include the ability to improve customer experience, grid reliability, outage management, and operational efficiency. Despite these tangible benefits, many utilities are inundated by data and remain uncertain about how to extract additional value from these deployed assets outside of billing operations. One way to overcome this challenge is the development of new metrics for classifying utility customers. Traditionally, utilities classified their customers based on their business nature (residential, commercial, and industrial) and/or their total annual consumption. While this classification is useful for some operational functions, it is too limited for designing effective monitoring and control strategies. In this paper, a data mining methodology is proposed for clustering and profiling smart meters data in order to form unique classes of customers exhibiting similar usage patterns. The developed clusters could help utilities in identifying opportunities for achieving some of the benefits of smart meters data.

  5. Real-Time Distribution Feeder Performance Monitoring, Advisory Control, and Health Management System

    SciTech Connect (OSTI)

    Stoupis, James; Mousavi, Mirrasoul

    2014-09-30T23:59:59.000Z

    New data collection system equipment was installed in Xcel Energy substations and data was collected from 6 substations and 20 feeders. During Phase I, ABB collected and analyzed 793 real-time events to date from 6 Xcel Energy substations and continues today. The development and integration of several applications was completed during the course of this project, including a model-based faulted segment identification algorithm, with very positive results validated with field-gathered data discussed and included in this report. For mostly underground feeders, the success rate is 90% and the overreach rate is 90%. For mostly overhead feeders, the success rate is 74% and the overreach rate is 50%. The developed method is producing very accurate results for mostly underground feeders. For mostly overhead feeders, due to the bad OMS data quality and varying fault resistance when arcing, the developed method is producing good results but with much room for improvement. One area where the algorithm can be improved is the accuracy for sub-cycle fault events. In these cases, the accuracy of the conventional signal processing methods suffers due to most of these methods being based on a one-cycle processing window. By improving the signal processing accuracy, the accuracy of the faulted segment identification algorithm will also improve significantly. ABB intends to devote research in this area in the near future to help solve this problem. Other new applications developed during the course of the project include volt/VAR monitoring, unbalanced capacitor switching detection, unbalanced feeder loading detection, and feeder overloading detection. An important aspect of the demonstration phase of the project is to show the ability to provide adequate “heads-up” time ahead of customer calls or AMI reports so that the operators are provided with the much needed time to collect information needed to address an outage. The advance notification feature of the demonstration system provides this time and helps accelerate service restoration ultimately. To demonstrate the effectiveness of this feature, a demo system using substation data alone was set up to compare the minutes saved over a period of 22 months for two feeders where the real-time notification system has been deployed. The metric used for performance assessment is the time difference between the actual outage time from the OMS versus the time the notification email was received on the operators desk. Over the period of 22 months, we have accumulated over 7600 minutes (32 hours) ahead of actual outage time compared to the OMS timestamps. The significance of this analysis is that it shows the potential to reduce the SAIDI minutes and directly impact utility performance in terms of outage duration. If deployed at scale, it would have a significant impact on system reliability. To put this number in perspective, it would be helpful to assign a dollar figure to the potential savings that could be realized. According to the host utility, the average cost for each customer-minute-out (CMO) is approximately $0.30 across the operating company. This includes both direct and indirect costs such as bad press. The outage data over the previous 4 years show that the average customer count on primary/tap level outages is about 56. Accordingly, the total minutes saved amounts to 425,600 CMOs on the average. This would in turn result in a potential cost savings figure of $127,680 for two feeders alone over the period of performance. This empirical evidence validates the strong value proposition of the project that was contemplated at the onset and its potential impact to reduce outage duration in support of DOE’s goal of 20%

  6. Author's personal copy Applications and usage of the real-time Neutron Monitor Database q

    E-Print Network [OSTI]

    Usoskin, Ilya G.

    in Astrophysics from Space (E), High-Energy Solar Particle Events ­ Past, Present, Future/Joint Scientific Event ­ UOULU, PL 3000, FIN-90014, Finland i Yerevan Physics Institute after A.I. Alikhanyan-ARAGATS, Alikhanyan in real-time mode. An important one will be the establishment of an Alert signal when dangerous solar

  7. Real-time microseismic monitoring: Automatic wave processing and multilayered velocity model for accurate event location

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    for the prevention of dynamic phenomena is an integral part of a strategy for exploring zones where there are risks, and the mine layout, all playing a significant contribution to the rate of seismic energy released. In order, powerfui Software has been installed in order to provide for high quality, real time microseismic

  8. Real-time monitoring of cyclic nucleotide signaling in neurons using genetically-

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -time monitoring of cyclic nucleotide signaling in neurons using genetically- encoded FRET probes Pierre VINCENT1: The signaling cascades involving cyclic nucleotides play a key role in signal transduction in virtually all cell types. Elucidation of the spatiotemporal regulation of cyclic nucleotide signaling requires methods

  9. Real-time monitoring during transportation of a radioisotope thermoelectric generator (RTG) using the radioisotope thermoelectric generator transportation system (RTGTS)

    SciTech Connect (OSTI)

    Pugh, Barry K. [EG and G Mound Applied Technologies P.O. Box 3000 Miamisburg, Ohio 45343-3000 (United States)

    1997-01-10T23:59:59.000Z

    The Radioisotopic Thermoelectric Generators (RTGs) that will be used to support the Cassini mission will be transported in the Radioisotope Thermoelectric Generator Transportation System (RTGTS). To ensure that the RTGs will not be affected during transportation, all parameters that could adversely affect RTG's performance must be monitored. The Instrumentation and Data Acquisition System (IDAS) for the RTGTS displays, monitors, and records all critical packaging and trailer system parameters. The IDAS also monitors the package temperature control system, RTG package shock and vibration data, and diesel fuel levels for the diesel fuel tanks. The IDAS alarms if any of these parameters reach an out-of-limit condition. This paper discusses the real-time monitoring during transportation of the Cassini RTGs using the RTGTS IDAS.

  10. Real-time monitoring during transportation of a radioisotope thermoelectric generator (RTG) using the radioisotope thermoelectric generator transportation system (RTGTS)

    SciTech Connect (OSTI)

    Pugh, B.K. [EGG Mound Applied Technologies P.O. Box 3000 Miamisburg, Ohio45343-3000 (United States)

    1997-01-01T23:59:59.000Z

    The Radioisotopic Thermoelectric Generators (RTGs) that will be used to support the Cassini mission will be transported in the Radioisotope Thermoelectric Generator Transportation System (RTGTS). To ensure that the RTGs will not be affected during transportation, all parameters that could adversely affect RTG{close_quote}s performance must be monitored. The Instrumentation and Data Acquisition System (IDAS) for the RTGTS displays, monitors, and records all critical packaging and trailer system parameters. The IDAS also monitors the package temperature control system, RTG package shock and vibration data, and diesel fuel levels for the diesel fuel tanks. The IDAS alarms if any of these parameters reach an out-of-limit condition. This paper discusses the real-time monitoring during transportation of the Cassini RTGs using the RTGTS IDAS. {copyright} {ital 1997 American Institute of Physics.}

  11. Arnold Schwarzenegger REAL-TIME GRID RELIABILITY

    E-Print Network [OSTI]

    Energy Research (PIER) California Energy Commission Beth Chambers Contract Manager Jamie Patterson (VSA) prototype to monitor system voltage conditions and provide real time dispatchers with reliabilityArnold Schwarzenegger Governor REAL-TIME GRID RELIABILITY MANAGEMENT California ISO Real

  12. MONITORING SPENT NUCLEAR FUEL REPROCESSING CONDITIONS NON-DESTRUCTIVELY AND IN NEAR-REAL-TIME USING THE MULTI-ISOTOPE PROCESS (MIP) MONITOR

    SciTech Connect (OSTI)

    Orton, Christopher R.; Fraga, Carlos G.; Douglas, Matthew; Christensen, Richard; Schwantes, Jon M.

    2010-05-07T23:59:59.000Z

    Researchers from Pacific Northwest National Laboratory and The Ohio State University are working to develop a system for monitoring spent nuclear fuel reprocessing facilities on-line, nondestructively, and in near-real-time. This method, known as the Multi-Isotope Process (MIP) Monitor, is based upon the measurement of distribution patterns of a suite of indicator (radioactive) isotopes present within product and waste streams of a nuclear reprocessing facility. Signatures from these indicator isotopes are monitored on-line by gamma spectrometry and compared, in near-real-time, to patterns representing "normal" process conditions using multivariate pattern recognition software. By targeting gamma-emitting indicator isotopes, the MIP Monitor approach is compatible with the use of small, portable, high-resolution gamma detectors that may be easily deployed throughout an existing facility. In addition, utilization of a suite of radio-elements, including ones with multiple oxidation states, increases the likelihood that attempts to divert material via process manipulation would be detected. Proof-of-principle modeling exercises simulating changes in acid strength have been completed and the results are promising. Laboratory testing is currently under way and significant results are available. Recent experimental results, along with an overview of the method are presented.

  13. Automatic Performance Visualization of Distributed Real-time systems

    E-Print Network [OSTI]

    Harmon, Trevor; Klefstad, Raymond

    2006-01-01T23:59:59.000Z

    execution deadlines. • Non-intrusive monitoring—The currentknown as Real-time Non-Intrusive (RTNI) monitoring. This

  14. Real time pulse width monitor for Intensified Charge Coupled Device (ICCD) electro-optic shutters

    SciTech Connect (OSTI)

    Yates, G.J.

    1996-12-01T23:59:59.000Z

    A method is described or controlling and measuring the pulse width of electrical gate pulses used for optical shuttering of image intensifier. The intensifiers are coupled to high frame rate Charge-Coupled-Devices (CCD) or Focus-Projection Scan (FPS) vidicon TV cameras for readout and telemetry of time resolved image sequences. The shutter duration or gate width of individual shutters is measured in real time and encoded in the video frame corresponding to a given shutter interval. The shutter information is updated once catch video frame by strobing new data with each TV camera vertical sync pulse. This circuitry is used in conjunction with commercial video insertion/annotation equipment to provide die shutter width information in alpha numeric text form along with the time resolved video image on a frame-by-frame basis. The measurement technique and circuitry involving a combination of high speed digital counters and analog integrators for measurements in the Ins to 1024 ns range are described. The accuracy obtained is compared with measurements obtained using batch speed DSOs. The measured data are provided in 10-bit Binary (Bi) and four decades of Binary Coded Decimal (BCD) and also displayed on four digit seven segment displays. The control circuitry including digital and analog input means for gate width selection are described. The implementation of both measurement and control circuitry into an Intensified Shuttered CCD (ISCCD) radiometric system for recording fast shuttered images at RS-170 to 4 KHz frame rates is presented.

  15. CAMI-AFT: A SCIENTIFIC FIELD EXPERIMENT TO CALIBRATE REAL-TIME MONITORING SYSTEMS DEDICATED TO THE MANAGEMENT OF POST-MINING

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    CAMI-AFT: A SCIENTIFIC FIELD EXPERIMENT TO CALIBRATE REAL-TIME MONITORING SYSTEMS DEDICATED the source energy to the sensor energy. KEYWORDS: Microseismic monitoring, Post-mining risks. RESUME : les TO THE MANAGEMENT OF POST-MINING RISKS CONTRUCCI Isabelle1 , KLEIN Emmanuelle1 , BIGARRE Pascal1 , LIZEUR Armand1

  16. Real-Time Water Quality Monitoring and Habitat Assessment in theSan Luis National Wildlife Refuge

    SciTech Connect (OSTI)

    Quinn, Nigel W.T.; Hanlon, Jeremy S.; Burns, Josephine R.; Stromayer, Karl A.K.; Jordan, Brandon M.; Ennis, Mike J.; Woolington,Dennis W.

    2005-08-28T23:59:59.000Z

    The project report describes a two year experiment to control wetland drainage to the San Joaquin River of California from the San Luis National Wildlife Refuge using a decision support system for real-time water quality management. This system required the installation and operation of one inlet and three drainage flow and water quality monitoring stations which allowed a simple mass balance model to be developed of the seasonally managed wetlands in the study area. Remote sensing methods were developed to document long-term trends in wetland moist soil vegetation and soil salinity in response to management options such as delaying the initiation of seasonal wetland drainage. These environmental management tools provide wetland managers with some of the tools necessary to improve salinity conditions in the San Joaquin River and improve compliance with State mandated salinity objectives without inflicting long-term harm on the wild fowl habitat resource.

  17. Real-time monitoring of volatile organic compounds using chemical ionization mass spectrometry

    DOE Patents [OSTI]

    Mowry, Curtis Dale (Albuquerque, NM); Thornberg, Steven Michael (Peralta, NM)

    1999-01-01T23:59:59.000Z

    A system for on-line quantitative monitoring of volatile organic compounds (VOCs) includes pressure reduction means for carrying a gaseous sample from a first location to a measuring input location maintained at a low pressure, the system utilizing active feedback to keep both the vapor flow and pressure to a chemical ionization mode mass spectrometer constant. A multiple input manifold for VOC and gas distribution permits a combination of calibration gases or samples to be applied to the spectrometer.

  18. Real-time combustion control and diagnostics sensor-pressure oscillation monitor

    DOE Patents [OSTI]

    Chorpening, Benjamin T. (Morgantown, WV); Thornton, Jimmy (Morgantown, WV); Huckaby, E. David (Morgantown, WV); Richards, George A. (Morgantown, WV)

    2009-07-14T23:59:59.000Z

    An apparatus and method for monitoring and controlling the combustion process in a combustion system to determine the amplitude and/or frequencies of dynamic pressure oscillations during combustion. An electrode in communication with the combustion system senses hydrocarbon ions and/or electrons produced by the combustion process and calibration apparatus calibrates the relationship between the standard deviation of the current in the electrode and the amplitudes of the dynamic pressure oscillations by applying a substantially constant voltage between the electrode and ground resulting in a current in the electrode and by varying one or more of (1) the flow rate of the fuel, (2) the flow rate of the oxidant, (3) the equivalence ratio, (4) the acoustic tuning of the combustion system, and (5) the fuel distribution in the combustion chamber such that the amplitudes of the dynamic pressure oscillations in the combustion chamber are calculated as a function of the standard deviation of the electrode current. Thereafter, the supply of fuel and/or oxidant is varied to modify the dynamic pressure oscillations.

  19. Final Technical Report of project: "Contactless Real-Time Monitoring of Paper Mechanical Behavior During Papermaking"

    SciTech Connect (OSTI)

    Emmanuel Lafond; Paul Ridgway; Ted Jackson; Rick Russo; Ken Telschow; Vance Deason; Yves Berthelot; David Griggs; Xinya Zhang; Gary Baum

    2005-08-30T23:59:59.000Z

    The early precursors of laser ultrasonics on paper were Prof. Y. Berthelot from the Georgia Institute of Technology/Mechanical Engineering department, and Prof. P. Brodeur from the Institute of Paper Science and Technology, both located in Atlanta, Georgia. The first Ph.D. thesis that shed quite some light on the topic, but also left some questions unanswered, was completed by Mont A. Johnson in 1996. Mont Johnson was Prof. Berthelot's student at Georgia Tech. In 1997 P. Brodeur proposed a project involving himself, Y. Berthelot, Dr. Ken Telschow and Mr. Vance Deason from INL, Honeywell-Measurex and Dr. Rick Russo from LBNL. The first time the proposal was not accepted and P. Brodeur decided to re-propose it without the involvement from LBNL. Rick Russo proposed a separate project on the same topic on his side. Both proposals were finally accepted and work started in the fall of 1997 on the two projects. Early on, the biggest challenge was to find an optical detection method which could detect laser-induced displacements of the web surface that are of the order of .1 micron in the ultrasonic range. This was to be done while the web was having an out-of-plane amplitude of motion in the mm range due to web flutter; while moving at 10 m/s to 30 m/s in the plane of the web, on the paper machine. Both teams grappled with the same problems and tried similar methods in some cases, but came up with two similar but different solutions one year later. The IPST, GT, INL team found that an interferometer made by Lasson Technologies Inc. using the photo-induced electro-motive force in Gallium Arsenide was able to detect ultrasonic waves up to 12-15 m/s. It also developed in house an interferometer using the Two-Wave Mixing effect in photorefractive crystals that showed good promises for on-line applications, and experimented with a scanning mirror to reduce motion-induced texture noise from the web and improve signal to noise ratio. On its side, LBNL had the idea to combine a commercial Mach-Zehnder interferometer to a spinning mirror synchronized to the web speed, in order to make almost stationary measurements. The method was demonstrated at up to 10 m/s. Both teams developed their own version of a web simulator that was driving a web of paper at 10 m/s or higher. The Department of Energy and members of the Agenda 2020 started to make a push for merging the two projects. This made sense because their topics were really identical but this was not well received by Prof. Brodeur. Finally IPST decided to reassign the direction of the IPST-INL-GT project in the spring of 1999 to Prof. Chuck Habeger so that the two teams could work together. Also at this time, Honeywell-Measurex dropped as a member of the team. It was replaced by ABB Industrial Systems whose engineers had extensive previous experience of working with ultrasonic sensors on paperboard. INL also finished its work on the project as its competencies were partly redundant with LBNL. From the summer of 1999, the IPST-GT and LBNL teams were working together and helped each other often by collaborating and visiting either laboratory when was necessary. Around the beginning of 2000, began an effort at IPST to create an off-line laser-ultrasonics instrument that could perform automated measurements of paper and paperboard's bending stiffness. It was widely known that the mechanical bending tests of paper used for years by the paper industry were very inaccurate and exhibited poor reproducibility; therefore the team needed a new instrument of reference to validate its future on-line results. In 1999-2000, the focus of the on-line instrument was on a pre-industrial demonstration on a pilot coater while reducing the damage to the web caused by the generation laser, below the threshold where it could be visible by the naked eye. During the spring of 2000 Paul Ridgway traveled to IPST and brought with him a redesigned system still using the same Mach-Zehnder interferometer as before, but this time employing an electric motor-driven spinning mirror instead of the previously belt-driven m

  20. Development of a real-time monitor of mercury in combustor flues based on Active Nitrogen Energy Transfer (ANET)

    SciTech Connect (OSTI)

    Piper, L.G.; Fraser, M.E.; Davis, S.J. [Physical Sciences, Inc., Andover, MA (United States)

    1995-12-31T23:59:59.000Z

    This paper reports preliminary results from a development program to design and field test a prototype instrument for real-time mercury detection in combustor flue gases. This system has sub parts-per-billion sensitivity for Hg detection, can differentiate elemental mercury from mercuric chloride, and has a high tolerance toward particulates. The five major systems (sampling, discharge, detection, calibration, and data acquisition and control) which comprise the instrument are described, and design and preliminary test results are outlined.

  1. THE MULTI-ISOTOPE PROCESS (MIP) MONITOR: A NEAR-REAL-TIME, NON-DESTRUCTIVE, INDICATOR OF SPENT NUCLEAR FUEL REPROCESSING CONDITIONS

    SciTech Connect (OSTI)

    Schwantes, Jon M.; Orton, Christopher R.; Fraga, Carlos G.; Douglas, Matthew; Christensen, Richard

    2010-05-07T23:59:59.000Z

    Researchers from Pacific Northwest National Laboratory and The Ohio State University are working to develop a system for monitoring spent nuclear fuel reprocessing facilities on-line, non-destructively, and in near-real-time. This method, known as the Multi-Isotope Process (MIP) Monitor, is based upon the measurement of distribution patterns of a suite of indicator (radioactive) isotopes present within product and waste streams of a nuclear reprocessing facility. Signatures from these indicator isotopes are monitored on-line by gamma spectrometry and compared, in near-real-time, to patterns representing "normal" process conditions using multivariate pattern recognition software. By targeting gamma-emitting indicator isotopes, the MIP Monitor approach is compatible with the use of small, portable, high-resolution gamma detectors that may be easily deployed throughout an existing facility. In addition, utilization of a suite of radio-elements, including ones with multiple oxidation states, increases the likelihood that attempts to divert material via process manipulation would be detected. Proof-of-principle modeling exercises simulating changes in acid strength have been completed and the results are promising. Laboratory validation is currently under way and significant results are available. The latest experimental results, along with an overview of the method will be presented.

  2. A real time expert system for performance monitoring and scheduling of a Cray Y-MP supercomputer

    E-Print Network [OSTI]

    Danait, Sachin W.

    1991-01-01T23:59:59.000Z

    administrator's workload. The prototype expert system was tested by submitting sample jobs in the differ&. n& hatch queues. It &vas observed that the load on the network had a signif- icant impact on the performance of the expert system. Ti...'1. ?1'&'s. The prototype, built using the real-time expert shell G2, controls the Net?'orl& f)ueueing System (NQS) on a Cray-YMP supercomputer. 5'ionitoring features are provided by us&' of graphs and read-out tables which provi&l& information...

  3. An integrated cyberinfrastructure for real-time data acquisition and decision making in smart buildings and coral reef monitoring

    E-Print Network [OSTI]

    Shin, Peter Hongsuck

    2010-01-01T23:59:59.000Z

    6.2 Coral reef monitoring . . . . . . . . . . . . . . .This figure illustrates the coral reef monitoring systemMCR09] Moorea Coral Reef (MCR) Long Term Ecological

  4. Systematic Security and Timeliness Tradeoffs in Real-Time Embedded Systems Kyoung-Don Kang

    E-Print Network [OSTI]

    Kang, Kyoung-Don

    security requirements in soft real-time applications such as battlefield monitoring and target track- ing

  5. Real time automated inspection

    DOE Patents [OSTI]

    Fant, K.M.; Fundakowski, R.A.; Levitt, T.S.; Overland, J.E.; Suresh, B.R.; Ulrich, F.W.

    1985-05-21T23:59:59.000Z

    A method and apparatus are described relating to the real time automatic detection and classification of characteristic type surface imperfections occurring on the surfaces of material of interest such as moving hot metal slabs produced by a continuous steel caster. A data camera transversely scans continuous lines of such a surface to sense light intensities of scanned pixels and generates corresponding voltage values. The voltage values are converted to corresponding digital values to form a digital image of the surface which is subsequently processed to form an edge-enhanced image having scan lines characterized by intervals corresponding to the edges of the image. The edge-enhanced image is thresholded to segment out the edges and objects formed by the edges by interval matching and bin tracking. Features of the objects are derived and such features are utilized to classify the objects into characteristic type surface imperfections. 43 figs.

  6. Real time automated inspection

    DOE Patents [OSTI]

    Fant, Karl M. (Minneapolis, MN); Fundakowski, Richard A. (Saint Paul, MN); Levitt, Tod S. (Minneapolis, MN); Overland, John E. (Plymouth, MN); Suresh, Bindinganavle R. (New Brighton, MN); Ulrich, Franz W. (Minneapolis, MN)

    1985-01-01T23:59:59.000Z

    A method and apparatus relating to the real time automatic detection and classification of characteristic type surface imperfections occurring on the surfaces of material of interest such as moving hot metal slabs produced by a continuous steel caster. A data camera transversely scans continuous lines of such a surface to sense light intensities of scanned pixels and generates corresponding voltage values. The voltage values are converted to corresponding digital values to form a digital image of the surface which is subsequently processed to form an edge-enhanced image having scan lines characterized by intervals corresponding to the edges of the image. The edge-enhanced image is thresholded to segment out the edges and objects formed by the edges are segmented out by interval matching and bin tracking. Features of the objects are derived and such features are utilized to classify the objects into characteristic type surface imperfections.

  7. Field Demonstration of a Real-time Non-intrusive Monitoring System for Condition-based Maintenance

    E-Print Network [OSTI]

    Proper, Ethan

    2009-01-01T23:59:59.000Z

    The performance of important electrical loads on mission critical systems like warships or off-shore platforms is often tracked by dedicated monitoring equipment. Individual monitoring of each load is expensive and risky. ...

  8. REAL TIME SYSTEM OPERATIONS 2006-2007

    SciTech Connect (OSTI)

    Eto, Joseph H.; Parashar, Manu; Lewis, Nancy Jo

    2008-08-15T23:59:59.000Z

    The Real Time System Operations (RTSO) 2006-2007 project focused on two parallel technical tasks: (1) Real-Time Applications of Phasors for Monitoring, Alarming and Control; and (2) Real-Time Voltage Security Assessment (RTVSA) Prototype Tool. The overall goal of the phasor applications project was to accelerate adoption and foster greater use of new, more accurate, time-synchronized phasor measurements by conducting research and prototyping applications on California ISO's phasor platform - Real-Time Dynamics Monitoring System (RTDMS) -- that provide previously unavailable information on the dynamic stability of the grid. Feasibility assessment studies were conducted on potential application of this technology for small-signal stability monitoring, validating/improving existing stability nomograms, conducting frequency response analysis, and obtaining real-time sensitivity information on key metrics to assess grid stress. Based on study findings, prototype applications for real-time visualization and alarming, small-signal stability monitoring, measurement based sensitivity analysis and frequency response assessment were developed, factory- and field-tested at the California ISO and at BPA. The goal of the RTVSA project was to provide California ISO with a prototype voltage security assessment tool that runs in real time within California ISO?s new reliability and congestion management system. CERTS conducted a technical assessment of appropriate algorithms, developed a prototype incorporating state-of-art algorithms (such as the continuation power flow, direct method, boundary orbiting method, and hyperplanes) into a framework most suitable for an operations environment. Based on study findings, a functional specification was prepared, which the California ISO has since used to procure a production-quality tool that is now a part of a suite of advanced computational tools that is used by California ISO for reliability and congestion management.

  9. In vivo real-time monitoring system of electroporation mediated control of transdermal and topical drug delivery

    E-Print Network [OSTI]

    Ljubljana, University of

    ), doxorubicin (DOX) or fentanyl (FEN), were applied to the skin before and after EP. The new monitoring system as a positive control. The non-invasive monitoring of the delivery of DOX, a fluorescent chemotherapeutic drug the observed effects as obtained with FD and DOX, by the measured physiological responses of the mice as well

  10. Reliable Real-time Clinical Monitoring Using Sensor Network Technology Octav Chipara, Christopher Brooks, Sangeeta Bhattacharya, Chenyang Lu,

    E-Print Network [OSTI]

    Lu, Chenyang

    - tients. We propose a monitoring system with two types of nodes: patient nodes equipped with wireless developed the Dynamic Relay Association Protocol (DRAP), an effective mechanism for discovering the right of stay in hospitals. The prevalence of clinical deterioration resulting in cardiopulmonary or respiratory

  11. MPSoC ECG Biochip: A Multiprocessor System-on-Chip for Real-Time Human Heart Monitoring and Analysis

    E-Print Network [OSTI]

    Jantsch, Axel

    . INTRODUCTION Despite the ongoing advances in heart treatment, in the United States [1] and Canada [2] as well will be the leading cause of death in developing countries. Since the rate of hospitalization increases with age by far the main cause of death and a challenging problem for biomedical engineers to monitor and analyze

  12. Magnetically insulated baffled probe for real-time monitoring of equilibrium and fluctuating values of space potentials, electron and ion temperatures, and densities

    SciTech Connect (OSTI)

    Demidov, V. I.; Koepke, M. E. [Department of Physics, West Virginia University, Morgantown, West Virginia 26506 (United States); Raitses, Y. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)

    2010-10-15T23:59:59.000Z

    By restricting the electron-collection area of a cold Langmuir probe compared to the ion-collection area, the probe floating potential can become equal to the space potential, and thus conveniently monitored, rather than to a value shifted from the space potential by an electron-temperature-dependent offset, i.e., the case with an equal-collection-area probe. This design goal is achieved by combining an ambient magnetic field in the plasma with baffles, or shields, on the probe, resulting in species-selective magnetic insulation of the probe collection area. This permits the elimination of electron current to the probe by further adjustment of magnetic insulation which results in an ion-temperature-dependent offset when the probe is electrically floating. Subtracting the floating potential of two magnetically insulated baffled probes, each with a different degree of magnetic insulation, enables the electron or ion temperature to be measured in real time.

  13. In-situ, Real-Time Monitoring of Mechanical and Chemical Structure Changes in a V2O5 Battery Electrode Using a MEMS Optical Sensor

    SciTech Connect (OSTI)

    Jung, H. [University of Maryland; Gerasopoulos, K. [University of Maryland; Gnerlich, Markus [University of Maryland; Talin, A. Alec [Sandia National Laboratories; Ghodssi, Reza [University of Maryland

    2014-06-01T23:59:59.000Z

    This work presents the first demonstration of a MEMS optical sensor for in-situ, real-time monitoring of both mechanical and chemical structure evolutions in a V2O5 lithium-ion battery (LIB) cathode during battery operation. A reflective membrane forms one side of a Fabry-Perot (FP) interferometer, while the other side is coated with V2O5 and exposed to electrolyte in a half-cell LIB. Using one microscope and two laser sources, both the induced membrane deflection and the corresponding Raman intensity changes are observed during lithium cycling. Results are in good agreement with the expected mechanical behavior and disorder change of the V2O5 layers, highlighting the significant potential of MEMS as enabling tools for advanced scientific investigations.

  14. Percutaneous Radiofrequency Ablation of Painful Spinal Tumors Adjacent to the Spinal Cord with Real-Time Monitoring of Spinal Canal Temperature: A Prospective Study

    SciTech Connect (OSTI)

    Nakatsuka, Atsuhiro, E-mail: nakatuka@clin.medic.mie-u.ac.jp; Yamakado, Koichiro; Takaki, Haruyuki; Uraki, Junji; Makita, Masashi; Oshima, Fumiyoshi; Takeda, Kan [Mie University School of Medicine, Department of Radiology (Japan)

    2009-01-15T23:59:59.000Z

    PurposeTo prospectively evaluate the feasibility, safety, and clinical utility of bone radiofrequency (RF) ablation with real-time monitoring of the spinal canal temperature for the treatment of spinal tumors adjacent to the spinal cord.Materials and MethodsOur Institutional Review Board approved this study. Patients gave informed consent. The inclusion criteria were (a) a painful spinal metastasis and (b) a distance of 1 cm or less between the metastasis and the spinal cord. The thermocouple was placed in the spinal canal under CT fluoroscopic guidance. When the spinal canal temperature reached 45{sup o}C, RF application was immediately stopped. RF ablation was considered technically successful when the procedure was performed without major complications. Clinical success was defined as a fall in the visual analogue scale score of at least 2 points.ResultsTen patients with spinal tumors measuring 3-8 cm (mean, 4.9 {+-} 1.5 cm) were enrolled. The distance between the tumor and the spinal cord was 1-6 mm (mean, 2.4 {+-} 1.6 mm). All procedures were judged technically successful (100%). The spinal canal temperature did not exceed 45{sup o}C in 9 of the 10 patients (90%). In the remaining patient, the temperature rose to 48{sup o}C, resulting in transient neural damage, although RF application was immediately stopped when the temperature reached 45{sup o}C. Clinical success was achieved within 1 week in all patients (100%).ConclusionBone RF ablation with real-time monitoring of the spinal canal temperature is feasible, safe, and clinically useful for the treatment of painful spinal metastases adjacent to the spinal cord.

  15. Continuous, real time microwave plasma element sensor

    DOE Patents [OSTI]

    Woskov, Paul P. (4 Ledgewood Dr., Bedford, MA 01730); Smatlak, Donna L. (10 Village Hill Rd., Belmont, MA 02178); Cohn, Daniel R. (26 Walnut Hill Rd., Chestnut Hill, MA 02167); Wittle, J. Kenneth (1740 Conestoga Rd., Chester Springs, PA 19425); Titus, Charles H. (323 Echo Valley La., Newton Square, PA 19072); Surma, Jeffrey E. (806 Brian La., Kennewick, WA 99337)

    1995-01-01T23:59:59.000Z

    Microwave-induced plasma for continuous, real time trace element monitoring under harsh and variable conditions. The sensor includes a source of high power microwave energy and a shorted waveguide made of a microwave conductive, refractory material communicating with the source of the microwave energy to generate a plasma. The high power waveguide is constructed to be robust in a hot, hostile environment. It includes an aperture for the passage of gases to be analyzed and a spectrometer is connected to receive light from the plasma. Provision is made for real time in situ calibration. The spectrometer disperses the light, which is then analyzed by a computer. The sensor is capable of making continuous, real time quantitative measurements of desired elements, such as the heavy metals lead and mercury.

  16. Continuous, real time microwave plasma element sensor

    DOE Patents [OSTI]

    Woskov, P.P.; Smatlak, D.L.; Cohn, D.R.; Wittle, J.K.; Titus, C.H.; Surma, J.E.

    1995-12-26T23:59:59.000Z

    Microwave-induced plasma is described for continuous, real time trace element monitoring under harsh and variable conditions. The sensor includes a source of high power microwave energy and a shorted waveguide made of a microwave conductive, refractory material communicating with the source of the microwave energy to generate a plasma. The high power waveguide is constructed to be robust in a hot, hostile environment. It includes an aperture for the passage of gases to be analyzed and a spectrometer is connected to receive light from the plasma. Provision is made for real time in situ calibration. The spectrometer disperses the light, which is then analyzed by a computer. The sensor is capable of making continuous, real time quantitative measurements of desired elements, such as the heavy metals lead and mercury. 3 figs.

  17. NRC Job Code V6060: Extended in-situ and real time monitoring. Task 4: Detection and monitoring of leaks at nuclear power plants external to structures

    SciTech Connect (OSTI)

    Sheen, S. H. (Nuclear Engineering Division)

    2012-08-01T23:59:59.000Z

    In support of Task 4 of the NRC study on compliance with 10 CFR part 20.1406, minimization of contamination, Argonne National Laboratory (ANL) conducted a one-year scoping study, in concert with a parallel study performed by NRC/NRR staff, on monitoring for leaks at nuclear power plants (NPPs) external to structures. The objective of this task-4 study is to identify and assess those sensors and monitoring techniques for early detection of abnormal radioactive releases from the engineered facility structures, systems and components (SSCs) to the surrounding underground environment in existing NPPs and planned new reactors. As such, methods of interest include: (1) detection of anomalous water content of soils surrounding SSCs, (2) radionuclides contained in the leaking water, and (3) secondary signals such as temperature. ANL work scope includes mainly to (1) identify, in concert with the nuclear industry, the sensors and techniques that have most promise to detect radionuclides and/or associated chemical releases from SSCs of existing NPPs and (2) review and provide comments on the results of the NRC/NRR staff scoping study to identify candidate technologies. This report constitutes the ANL deliverable of the task-4 study. It covers a survey of sensor technologies and leak detection methods currently applied to leak monitoring at NPPs. The survey also provides a technology evaluation that identifies their strength and deficiency based on their detection speed, sensitivity, range and reliability. Emerging advanced technologies that are potentially capable of locating releases, identifying the radionuclides, and estimating their concentrations and distributions are also included in the report along with suggestions of required further research and development.

  18. Solar Real-Time Pricing: Is Real-Time Electricity Pricing Beneficial...

    Energy Savers [EERE]

    Information Resources Solar Real-Time Pricing: Is Real-Time Electricity Pricing Beneficial to Solar PV in New York City? Solar Real-Time Pricing: Is Real-Time Electricity...

  19. Performance assessment on continuous air monitors under real operating conditions

    SciTech Connect (OSTI)

    Monsanglant-Louvet, C.; Liatimi, N.; Gensdarmes, F. [Inst. of Radioprotection and Nuclear Safety- IRSN, Saclay (France)

    2011-07-01T23:59:59.000Z

    In the nuclear industry, workers may be exposed to artificial radioactive aerosols. These aerosols are generally composed of particles with a diameter measuring between 0.1 {mu}m and 10 {mu}m. To protect workers in nuclear facilities, monitors that continuously measure radioactivity in the air are used. The main function of the monitor is to provide real-time measurement of activity concentration. Measurement of aerosol activity concentration can be affected by a number of factors specific to the aerosols and the instrument. The first part of the article will present the general operating principles of continuous air monitors (CAMs) and inherent measurement difficulties, as well as the main standard tests. The second section describes the experimental ICARE facility The ICARE facility generates standard artificial and natural radioactive aerosols for calibrating continuous air monitors under real operating conditions. (authors)

  20. Real Time Grid Reliability Management 2005

    SciTech Connect (OSTI)

    Eto, Joe; Eto, Joe; Lesieutre, Bernard; Lewis, Nancy Jo; Parashar, Manu

    2008-07-07T23:59:59.000Z

    The increased need to manage California?s electricity grid in real time is a result of the ongoing transition from a system operated by vertically-integrated utilities serving native loads to one operated by an independent system operator supporting competitive energy markets. During this transition period, the traditional approach to reliability management -- construction of new transmission lines -- has not been pursued due to unresolved issues related to the financing and recovery of transmission project costs. In the absence of investments in new transmission infrastructure, the best strategy for managing reliability is to equip system operators with better real-time information about actual operating margins so that they can better understand and manage the risk of operating closer to the edge. A companion strategy is to address known deficiencies in offline modeling tools that are needed to ground the use of improved real-time tools. This project: (1) developed and conducted first-ever demonstrations of two prototype real-time software tools for voltage security assessment and phasor monitoring; and (2) prepared a scoping study on improving load and generator response models. Additional funding through two separate subsequent work authorizations has already been provided to build upon the work initiated in this project.

  1. Visualizations for Real-time Pricing Demonstration

    SciTech Connect (OSTI)

    Marinovici, Maria C.; Hammerstrom, Janelle L.; Widergren, Steven E.; Dayley, Greg K.

    2014-10-13T23:59:59.000Z

    In this paper, the visualization tools created for monitoring the operations of a real-time pricing demonstration system that runs at a distribution feeder level are presented. The information these tools provide gives insights into demand behavior from automated price responsive devices, distribution feeder characteristics, impact of weather on system’s development, and other significant dynamics. Given the large number of devices that bid into a feeder-level real-time electricity market, new techniques are explored to summarize the present state of the system and contrast that with previous trends as well as future projections. To better understand the system behavior and correctly inform decision-making procedures, effective visualization of the data is imperative.

  2. Real time infrared aerosol analyzer

    DOE Patents [OSTI]

    Johnson, Stanley A. (Countryside, IL); Reedy, Gerald T. (Bourbonnais, IL); Kumar, Romesh (Naperville, IL)

    1990-01-01T23:59:59.000Z

    Apparatus for analyzing aerosols in essentially real time includes a virtual impactor which separates coarse particles from fine and ultrafine particles in an aerosol sample. The coarse and ultrafine particles are captured in PTFE filters, and the fine particles impact onto an internal light reflection element. The composition and quantity of the particles on the PTFE filter and on the internal reflection element are measured by alternately passing infrared light through the filter and the internal light reflection element, and analyzing the light through infrared spectrophotometry to identify the particles in the sample.

  3. New field programmable gate array-based image-oriented acquisition and real-time processing applied to plasma facing component thermal monitoring

    SciTech Connect (OSTI)

    Martin, V. [Pulsar Team-Project, INRIA Sophia Antipolis, Sophia Antipolis F-06902 (France); Dunand, G.; Moncada, V. [Sophia Conseil Company, Sophia Antipolis F-06560 (France); Jouve, M.; Travere, J.-M. [CEA, IRFM, Saint-Paul-Lez-Durance F-13108 (France)

    2010-10-15T23:59:59.000Z

    During operation of present fusion devices, the plasma facing components (PFCs) are exposed to high heat fluxes. Understanding and preventing overheating of these components during long pulse discharges is a crucial safety issue for future devices like ITER. Infrared digital cameras interfaced with complex optical systems have become a routine diagnostic to measure surface temperatures in many magnetic fusion devices. Due to the complexity of the observed scenes and the large amount of data produced, the use of high computational performance hardware for real-time image processing is then mandatory to avoid PFC damages. At Tore Supra, we have recently made a major upgrade of our real-time infrared image acquisition and processing board by the use of a new field programmable gate array (FPGA) optimized for image processing. This paper describes the new possibilities offered by this board in terms of image calibration and image interpretation (abnormal thermal events detection) compared to the previous system.

  4. Real-Time PCR Dean Fraga,1

    E-Print Network [OSTI]

    Jones, Michelle

    , Wooster, Ohio 2 Ohio Agricultural Research and Development Center, Wooster, Ohio 3 Ashland University, Ashland, Ohio OVERVIEW AND PRINCIPLES The real-time polymerase chain reaction (real-time PCR) is a recent

  5. Convex Optimization: from Real-Time Embedded

    E-Print Network [OSTI]

    Hall, Julian

    Convex Optimization: from Real-Time Embedded to Large-Scale Distributed Stephen Boyd Neal Parikh of Edinburgh, June 25 2014 1 #12;Outline Convex Optimization Real-Time Embedded Optimization Large-Scale Distributed Optimization Summary 2 #12;Outline Convex Optimization Real-Time Embedded Optimization Large

  6. Relationship of Imaging Frequency and Planning Margin to Account for Intrafraction Prostate Motion: Analysis Based on Real-Time Monitoring Data

    SciTech Connect (OSTI)

    Curtis, William [School of Medicine, Case Western Reserve University, Cleveland, Ohio (United States)] [School of Medicine, Case Western Reserve University, Cleveland, Ohio (United States); Khan, Mohammad; Magnelli, Anthony; Stephans, Kevin; Tendulkar, Rahul [Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio (United States)] [Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio (United States); Xia, Ping, E-mail: xiap@ccf.org [Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio (United States)] [Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio (United States)

    2013-03-01T23:59:59.000Z

    Purpose: Correction for intrafraction prostate motion becomes important for hypofraction treatment of prostate cancer. The purpose of this study was to estimate an ideal planning margin to account for intrafraction prostate motion as a function of imaging and repositioning frequency in the absence of continuous prostate motion monitoring. Methods and Materials: For 31 patients receiving intensity modulated radiation therapy treatment, prostate positions sampled at 10 Hz during treatment using the Calypso system were analyzed. Using these data, we simulated multiple, less frequent imaging protocols, including intervals of every 10, 15, 20, 30, 45, 60, 90, 120, 180, and 240 seconds. For each imaging protocol, the prostate displacement at the imaging time was corrected by subtracting prostate shifts from the subsequent displacements in that fraction. Furthermore, we conducted a principal component analysis to quantify the direction of prostate motion. Results: Averaging histograms of every 240 and 60 seconds for all patients, vector displacements of the prostate were, respectively, within 3 and 2 mm for 95% of the treatment time. A vector margin of 1 mm achieved 91.2% coverage of the prostate with 30 second imaging. The principal component analysis for all fractions showed the largest variance in prostate position in the midsagittal plane at 54° from the anterior direction, indicating that anterosuperior to inferoposterior is the direction of greatest motion. The smallest prostate motion is in the left-right direction. Conclusions: The magnitudes of intrafraction prostate motion along the superior-inferior and anterior-posterior directions are comparable, and the smallest motion is in the left-right direction. In the absence of continuous prostate motion monitoring, and under ideal circumstances, 1-, 2-, and 3-mm vector planning margins require a respective imaging frequency of every 15, 60, and 240 to account for intrafraction prostate motion while achieving adequate geometric target coverage for 95% of the time.

  7. Real-time network simulation support for

    E-Print Network [OSTI]

    Liu, Xiaowen "Jason"

    Real-time network simulation support for scalable routing experiments Yue Li*, Jason Liu, and Raju-time network simulation with the realism of open- source routing protocol implementations. The infrastructure experiments on light-weight virtual machines. Keywords: network simulation; real-time simulation; network

  8. Real Time Grid Reliability Management 2005

    E-Print Network [OSTI]

    Eto, Joe

    2008-01-01T23:59:59.000Z

    Energy Management System (SCADA/EMS). In the long term, theadvanced real time control. SCADA is a category of softwareequipment and conditions. SCADA systems include hardware and

  9. Near Real-Time Push Middleware

    E-Print Network [OSTI]

    Mal, Siddhartha Byron

    2012-01-01T23:59:59.000Z

    Integration of “Near Real-Time Push Middleware” o Performance characterization and comparison with TuVista • DOE/LADWP Smart Grid

  10. Arnold Schwarzenegger REAL-TIME GRID RELIABILITY

    E-Print Network [OSTI]

    monitoring and tracking of phase angles between sources and sink buses within the Western Interconnection System Prototype Source: CERTS License Agreements and Copyrights / Non-Disclosure Agreements The Real subject to non-disclosure agreement between data providers and California ISO. #12;iii Table of Contents

  11. Real Time Search User Behavior Real time search is an increasingly important area of

    E-Print Network [OSTI]

    Jansen, James

    . The most frequently used terms accounted for only 0.03% of the total terms. Concerning search topics Web search. Searchers of real time content often repeat queries overtime, perhaps indicating long term content increasingly enters the main stream. Keywords Real time search, real time content, Collecta

  12. Real time sensor for therapeutic radiation delivery

    DOE Patents [OSTI]

    Bliss, Mary (West Richland, WA); Craig, Richard A. (West Richland, WA); Reeder, Paul L. (Richland, WA)

    1998-01-01T23:59:59.000Z

    The invention is a real time sensor for therapeutic radiation. A probe is placed in or near the patient that senses in real time the dose at the location of the probe. The strength of the dose is determined by either an insertion or an exit probe. The location is determined by a series of vertical and horizontal sensing elements that gives the operator a real time read out dose location relative to placement of the patient. The increased accuracy prevents serious tissue damage to the patient by preventing overdose or delivery of a dose to a wrong location within the body.

  13. Real time sensor for therapeutic radiation delivery

    DOE Patents [OSTI]

    Bliss, M.; Craig, R.A.; Reeder, P.L.

    1998-01-06T23:59:59.000Z

    The invention is a real time sensor for therapeutic radiation. A probe is placed in or near the patient that senses in real time the dose at the location of the probe. The strength of the dose is determined by either an insertion or an exit probe. The location is determined by a series of vertical and horizontal sensing elements that gives the operator a real time read out dose location relative to placement of the patient. The increased accuracy prevents serious tissue damage to the patient by preventing overdose or delivery of a dose to a wrong location within the body. 14 figs.

  14. Towards Real Time Diagnostics of Hybrid Welding Laser/GMAW

    SciTech Connect (OSTI)

    Timothy Mcjunkin; Dennis C. Kunerth; Corrie Nichol; Evgueni Todorov; Steve Levesque; Feng Yu; Robert Danna Couch

    2013-07-01T23:59:59.000Z

    Methods are currently being developed towards a more robust system real time feedback in the high throughput process combining laser welding with gas metal arc welding. A combination of ultrasonic, eddy current, electronic monitoring, and visual techniques are being applied to the welding process. Initial simulation and bench top evaluation of proposed real time techniques on weld samples are presented along with the concepts to apply the techniques concurrently to the weld process. Consideration for the eventual code acceptance of the methods and system are also being researched as a component of this project. The goal is to detect defects or precursors to defects and correct when possible during the weld process.

  15. Towards real time diagnostics of Hybrid Welding Laser/GMAW

    SciTech Connect (OSTI)

    McJunkin, T. R.; Kunerth, D. C.; Nichol, C. I. [Idaho National Laboratory, Idaho Falls, ID 83415-3570 (United States); Todorov, E.; Levesque, S. [Edison Welding Institute, Columbus, OH (United States)

    2014-02-18T23:59:59.000Z

    Methods are currently being developed towards a more robust system real time feedback in the high throughput process combining laser welding with gas metal arc welding. A combination of ultrasonic, eddy current, electronic monitoring, and visual techniques are being applied to the welding process. Initial simulation and bench top evaluation of proposed real time techniques on weld samples are presented along with the concepts to apply the techniques concurrently to the weld process. Consideration for the eventual code acceptance of the methods and system are also being researched as a component of this project. The goal is to detect defects or precursors to defects and correct when possible during the weld process.

  16. Optimizing near real time accountability for reprocessing.

    SciTech Connect (OSTI)

    Cipiti, Benjamin B.

    2010-06-01T23:59:59.000Z

    Near Real Time Accountability (NRTA) of actinides at high precision in reprocessing plants has been a long sought-after goal in the safeguards community. Achieving this goal is hampered by the difficulty of making precision measurements in the reprocessing environment, equipment cost, and impact to plant operations. Thus the design of future reprocessing plants requires an optimization of different approaches. The Separations and Safeguards Performance Model, developed at Sandia National Laboratories, was used to evaluate a number of NRTA strategies in a UREX+ reprocessing plant. Strategies examined include the incorporation of additional actinide measurements of internal plant vessels, more use of process monitoring data, and the option of periodic draining of inventory to key tanks. Preliminary results show that the addition of measurement technologies can increase the overall measurement uncertainty due to additional error propagation, so care must be taken when designing an advanced system. Initial results also show that relying on a combination of different NRTA techniques will likely be the best option. The model provides a platform for integrating all the data. The modeling results for the different NRTA options under various material loss conditions will be presented.

  17. Real time PCR measurement by fluorescence anisotropy

    E-Print Network [OSTI]

    Crane, Bryan Lee, 1976-

    2005-01-01T23:59:59.000Z

    Real-time polymerase chain reaction (PCR) is the gold-standard for quantitation in both mutation and gene expression analyses. Already this technique has found valuable clinical application in disease diagnosis and progression ...

  18. Real-time control over networks

    E-Print Network [OSTI]

    Ji, Kun

    2007-09-17T23:59:59.000Z

    researchers to develop NCSs to implement distributed control schemes. This dissertation presents a framework for the modeling, design, stability analysis, control, and bandwidth allocation of real-time control over networks. This framework covers key research...

  19. Real Time Grid Reliability Management 2005

    E-Print Network [OSTI]

    Eto, Joe

    2008-01-01T23:59:59.000Z

    SCE, W APA, PG&E Data • PDC – PI Interface frequency dataIntegration of CA ISO PDC with Arbiters California Real-TimePhasor Data Concentrator (PDC) receives data from PMUs in

  20. Recent Advances in Wave Travel Time Based Methodology for Structural Health Monitoring

    E-Print Network [OSTI]

    Southern California, University of

    Recent Advances in Wave Travel Time Based Methodology for Structural Health Monitoring and Early useful, a structural health monitoring method must be robust when applied to real data, sensitive even of vibrational methods found in structural health monitoring literature are not robust when applied to real

  1. Approaching Real-time Network Traffic Classification

    E-Print Network [OSTI]

    Haddadi, Hamed

    and studies. It serves as the input for Intrusion Detection Systems, provides Class-of-Service (CoS) mapping22 Approaching Real-time Network Traffic Classification ISSN 1470-5559 RR-06-12 October 2006-time Network Traffic Classification Wei Li, Kaysar Abdin, Robert Dann and Andrew Moore Department of Computer

  2. Addressing equipment set-up time and manufacturing cost through real time inline inspection in tantalum wire manufacturing

    E-Print Network [OSTI]

    González, Carlos A. (Carlos Alberto), 1972-

    2004-01-01T23:59:59.000Z

    For this study, a novel wire inspection system was developed to detect surface defects and monitor diameter real-time during the final wire drawing operation. Throughout his work, it was proven that the new inspection ...

  3. Getting Useful Real-Time Feedback About Your Program | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Getting Useful Real-Time Feedback About Your Program Getting Useful Real-Time Feedback About Your Program Better Buildings Webinar - May 25, 2011 20110525realtimefeedback.pdf...

  4. Wireless technology collects real-time information from oil and...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Wireless technology collects real-time information from oil and gas wells Wireless technology collects real-time information from oil and gas wells The patented system delivers...

  5. Reliable Downlink Scheduling for Wireless Networks with Real-Time and Non-Real Time Clients

    E-Print Network [OSTI]

    Jain, Abhishek

    2014-08-05T23:59:59.000Z

    reliability to the real time clients, while Round Robin policy provides reliability to the clients but fails to achieve high system throughput in a time-varying wireless network. Apart from these policies, there are scheduling policies which prioritize clients...

  6. Introducing Real-time Interactions Neil Henderson

    E-Print Network [OSTI]

    Newcastle upon Tyne, University of

    This report forms the deliverable for Activity I.35 which was to create a formal model to show University of Newcastle, Newcastle upon Tyne, NE1 7RU, UK. Abstract This report introduces a new rigorous notation called Real-time Interactions that can be used to model the interactions between a system and its

  7. Real-time fault detection and isolation in biological wastewater treatment plants

    E-Print Network [OSTI]

    Real-time fault detection and isolation in biological wastewater treatment plants F. Baggiani and S@dsi.unifi.it Automatic fault detection is becoming increasingly important in wastewater treatment plant operation, given automation controllers, wastewater treatment INTRODUCTION Real-time monitoring is an increasingly important

  8. Real time gamma-ray signature identifier

    DOE Patents [OSTI]

    Rowland, Mark (Alamo, CA); Gosnell, Tom B. (Moraga, CA); Ham, Cheryl (Livermore, CA); Perkins, Dwight (Livermore, CA); Wong, James (Dublin, CA)

    2012-05-15T23:59:59.000Z

    A real time gamma-ray signature/source identification method and system using principal components analysis (PCA) for transforming and substantially reducing one or more comprehensive spectral libraries of nuclear materials types and configurations into a corresponding concise representation/signature(s) representing and indexing each individual predetermined spectrum in principal component (PC) space, wherein an unknown gamma-ray signature may be compared against the representative signature to find a match or at least characterize the unknown signature from among all the entries in the library with a single regression or simple projection into the PC space, so as to substantially reduce processing time and computing resources and enable real-time characterization and/or identification.

  9. Real time chemical exposure and risk monitor

    DOE Patents [OSTI]

    Thrall, Karla D. (3804 Alder Lake Ct., West Richland, WA 99353); Kenny, Donald V. (6947 Sparrow La., Worthington, OH 43235); Endres, George W. R. (2112 Briarwood Ct., Richland, WA 99352); Sisk, Daniel R. (1211 Marshall Ave., Richland, WA 99352)

    1997-01-01T23:59:59.000Z

    The apparatus of the present invention is a combination of a breath interface and an external exposure dosimeter interface to a chemical analysis device, all controlled by an electronic processor for quantitatively analyzing chemical analysis data from both the breath interface and the external exposure dosimeter for determining internal tissue dose. The method of the present invention is a combination of steps of measuring an external dose, measuring breath content, then analyzing the external dose and breath content and determining internal tissue dose.

  10. Real time chemical exposure and risk monitor

    DOE Patents [OSTI]

    Thrall, K.D.; Kenny, D.V.; Endres, G.W.R.; Sisk, D.R.

    1997-07-08T23:59:59.000Z

    The apparatus of the present invention is a combination of a breath interface and an external exposure dosimeter interface to a chemical analysis device, all controlled by an electronic processor for quantitatively analyzing chemical analysis data from both the breath interface and the external exposure dosimeter for determining internal tissue dose. The method of the present invention is a combination of steps of measuring an external dose, measuring breath content, then analyzing the external dose and breath content and determining internal tissue dose. 7 figs.

  11. Real Time Pricing and the Real Live Firm

    SciTech Connect (OSTI)

    Moezzi, Mithra; Goldman, Charles; Sezgen, Osman; Bharvirkar, Ranjit; Hopper, Nicole

    2004-05-26T23:59:59.000Z

    Energy economists have long argued the benefits of real time pricing (RTP) of electricity. Their basis for modeling customers response to short-term fluctuations in electricity prices are based on theories of rational firm behavior, where management strives to minimize operating costs and optimize profit, and labor, capital and energy are potential substitutes in the firm's production function. How well do private firms and public sector institutions operating conditions, knowledge structures, decision-making practices, and external relationships comport with these assumptions and how might this impact price response? We discuss these issues on the basis of interviews with 29 large (over 2 MW) industrial, commercial, and institutional customers in the Niagara Mohawk Power Corporation service territory that have faced day-ahead electricity market prices since 1998. We look at stories interviewees told about why and how they respond to RTP, why some customers report that they can't, and why even if they can, they don't. Some firms respond as theorized, and we describe their load curtailment strategies. About half of our interviewees reported that they were unable to either shift or forego electricity consumption even when prices are high ($0.50/kWh). Reasons customers gave for why they weren't price-responsive include implicit value placed on reliability, pricing structures, lack of flexibility in adjusting production inputs, just-in-time practices, perceived barriers to onsite generation, and insufficient time. We draw these observations into a framework that could help refine economic theory of dynamic pricing by providing real-world descriptions of how firms behave and why.

  12. Real-Time Demand Side Energy Management

    E-Print Network [OSTI]

    Victor, A.; Brodkorb, M.

    2006-01-01T23:59:59.000Z

    Real-Time Demand Side Energy Management Annelize Victor Michael Brodkorb Sr. Business Consultant Business Development Manager Aspen Technology, Inc. Aspen Technology España, S.A. Houston, TX Barcelona, Spain ABSTRACT To remain... competitive, manufacturers must capture opportunities to increase bottom-line profitability. The goal of this paper is to present a new methodology for reducing energy costs – “Demand-Side Energy Management.” Learn how process manufacturers assess energy...

  13. Subsystem real-time Time Dependent Density Functional Theory

    E-Print Network [OSTI]

    Krishtal, Alisa; Pavanello, Michele

    2015-01-01T23:59:59.000Z

    We present the extension of Frozen Density Embedding (FDE) theory to real-time Time Dependent Density Functional Theory (rt-TDDFT). FDE a is DFT-in-DFT embedding method that allows to partition a larger Kohn-Sham system into a set of smaller, coupled Kohn-Sham systems. Additional to the computational advantage, FDE provides physical insight into the properties of embedded systems and the coupling interactions between them. The extension to rt-TDDFT is done straightforwardly by evolving the Kohn-Sham subsystems in time simultaneously, while updating the embedding potential between the systems at every time step. Two main applications are presented: the explicit excitation energy transfer in real time between subsystems is demonstrated for the case of the Na$_4$ cluster and the effect of the embedding on optical spectra of coupled chromophores. In particular, the importance of including the full dynamic response in the embedding potential is demonstrated.

  14. Continuous real-time measurement of aqueous cyanide

    DOE Patents [OSTI]

    Rosentreter, Jeffrey J.; Gering, Kevin L.

    2007-03-06T23:59:59.000Z

    This invention provides a method and system capable of the continuous, real-time measurement of low concentrations of aqueous free cyanide (CN) using an on-line, flow through system. The system is based on the selective reactivity of cyanide anions and the characteristically nonreactive nature of metallic gold films, wherein this selective reactivity is exploited as an indirect measurement for aqueous cyanide. In the present invention the dissolution of gold, due to the solubilization reaction with the analyte cyanide anion, is monitored using a piezoelectric microbalance contained within a flow cell.

  15. Real Time Simulation of Power Grid Disruptions

    SciTech Connect (OSTI)

    Chinthavali, Supriya [ORNL; Dimitrovski, Aleksandar D [ORNL; Fernandez, Steven J [ORNL; Groer, Christopher S [ORNL; Nutaro, James J [ORNL; Olama, Mohammed M [ORNL; Omitaomu, Olufemi A [ORNL; Shankar, Mallikarjun [ORNL; Spafford, Kyle L [ORNL; Vacaliuc, Bogdan [ORNL

    2012-11-01T23:59:59.000Z

    DOE-OE and DOE-SC workshops (Reference 1-3) identified the key power grid problem that requires insight addressable by the next generation of exascale computing is coupling of real-time data streams (1-2 TB per hour) as the streams are ingested to dynamic models. These models would then identify predicted disruptions in time (2-4 seconds) to trigger the smart grid s self healing functions. This project attempted to establish the feasibility of this approach and defined the scientific issues, and demonstrated example solutions to important smart grid simulation problems. These objectives were accomplished by 1) using the existing frequency recorders on the national grid to establish a representative and scalable real-time data stream; 2) invoking ORNL signature identification algorithms; 3) modeling dynamically a representative region of the Eastern interconnect using an institutional cluster, measuring the scalability and computational benchmarks for a national capability; and 4) constructing a prototype simulation for the system s concept of smart grid deployment. The delivered ORNL enduring capability included: 1) data processing and simulation metrics to design a national capability justifying exascale applications; 2) Software and intellectual property built around the example solutions; 3) demonstrated dynamic models to design few second self-healing.

  16. Baton Rouge Complex Steam Real Time Optimization

    E-Print Network [OSTI]

    Iyun, T.

    2014-01-01T23:59:59.000Z

    Baton Rouge Complex Steam Real Time Optimization IETC 2014 New Orleans, Louisiana Tope Iyun ExxonMobil Chemical Company May 22, 2014 ESL-IE-14-05-32 Proceedings of the Thrity-Sixth Industrial Energy Technology Conference New Orleans, LA. May 20... were generated by or on behalf of ExxonMobil Chemical Company. Legal Disclosures ©2014 ExxonMobil. To the extent the user is entitled to disclose and distribute this document, the user may forward, distribute, and/or photocopy this copyrighted...

  17. Property:Real-Time | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag Jump to:ID8/Organization RAPID/Contact/ID8/Position RAPID/Contact/ID8/NameReal-Time

  18. A Survey of Utility Experience with Real Time Pricing

    E-Print Network [OSTI]

    Barbose, Galen; Goldman, Charles; Neenan, Bernie

    2004-01-01T23:59:59.000Z

    Day Ahead Hourly Time of Use Tariff Description This is aTariff Name Real Time Pricing: Non-Residential Service Day Ahead Hourly Time of Use

  19. Monitoring and Evaluation of Smolt Migration in the Columbia Basin, Volume XIV; Evaluation of 2006 Prediction of the Run-Timing of Wild and Hatchery-Reared Salmon and Steelhead at Rock Island, Lower Granite, McNary, John Day and Bonneville Dams using Program Real Time, Technical Report 2006.

    SciTech Connect (OSTI)

    Griswold, Jim

    2007-01-01T23:59:59.000Z

    Program RealTime provided monitoring and forecasting of the 2006 inseason outmigrations via the internet for 32 PIT-tagged stocks of wild ESU chinook salmon and steelhead to Lower Granite and/or McNary dams, one PIT-tagged hatchery-reared ESU of sockeye salmon to Lower Granite Dam, and 20 passage-indexed runs-at-large, five each to Rock Island, McNary, John Day, and Bonneville Dams. Twenty-four stocks are of wild yearling chinook salmon which were captured, PIT-tagged, and released at sites above Lower Granite Dam in 2006, and have at least one year's historical migration data previous to the 2006 migration. These stocks originate in drainages of the Salmon, Grande Ronde and Clearwater Rivers, all tributaries to the Snake River, and are subsequently detected through the tag identification and monitored at Lower Granite Dam. In addition, seven wild PIT-tagged runs-at-large of Snake or Upper Columbia River ESU salmon and steelhead were monitored at McNary Dam. Three wild PIT-tagged runs-at-large were monitored at Lower Granite Dam, consisting of the yearling and subyearling chinook salmon and the steelhead trout runs. The hatchery-reared PIT-tagged sockeye salmon stock from Redfish Lake was monitored outmigrating through Lower Granite Dam. Passage-indexed stocks (stocks monitored by FPC passage indices) included combined wild and hatchery runs-at-large of subyearling and yearling chinook, coho, and sockeye salmon, and steelhead trout forecasted to Rock Island, McNary, John Day, and Bonneville Dams.

  20. Monitoring and Evaluation of Smolt Migration in the Columbia Basin : Volume XV : Evaluation of the 2007 Predictions of the Run-Timing of Wild and Hatchery-Reared Salmon and Steelhead Smolts to Rock Island, Lower Granite, McNary, John Day, and Bonneville Dams using Program RealTime.

    SciTech Connect (OSTI)

    Griswold, Jim; Townsend, Richard L.; Skalski, John R.

    2008-12-01T23:59:59.000Z

    Program RealTime provided monitoring and forecasting of the 2007 inseason outmigrations via the internet for 26 PIT-tagged stocks of wild ESU Chinook salmon and steelhead to Lower Granite and/or McNary dams, one PIT-tagged hatchery-reared ESU of sockeye salmon to Lower Granite Dam, one PIT-tagged wild stock of sockeye salmon to McNary Dam, and 20 passage-indexed runs-at-large, five each to Rock Island, McNary, John Day, and Bonneville dams. Nineteen stocks are of wild yearling Chinook salmon which were captured, PIT-tagged, and released at sites above Lower Granite Dam in 2007 and have at least one year's historical migration data previous to the 2007 migration. These stocks originate in 19 tributaries of the Salmon, Grande Ronde and Clearwater Rivers, all tributaries to the Snake River, and are subsequently detected through tag identification and monitored at Lower Granite Dam. Seven wild PIT-tagged runs-at-large of Snake or Upper Columbia River ESU salmon and steelhead were monitored at McNary Dam. Three wild PIT-tagged runs-at-large were monitored at Lower Granite Dam, consisting of the yearling and subyearling Chinook salmon and the steelhead runs. The hatchery-reared PIT-tagged sockeye salmon stock from Redfish Lake was monitored outmigrating through Lower Granite Dam. Passage-indexed stocks (stocks monitored by FPC passage indices) included combined wild and hatchery runs-at-large of subyearling and yearling Chinook, coho, and sockeye salmon, and steelhead forecasted to Rock Island, McNary, John Day, and Bonneville dams.

  1. Residential Real-time Price Response Simulation

    SciTech Connect (OSTI)

    Widergren, Steven E.; Subbarao, Krishnappa; Chassin, David P.; Fuller, Jason C.; Pratt, Robert G.

    2011-10-10T23:59:59.000Z

    The electric industry is gaining experience with innovative price responsive demand pilots and limited roll-outs to customers. One of these pilots is investigating real-time pricing signals to engage end-use systems and local distributed generation and storage in a distributed optimization process. Attractive aspects about the approach include strong scalability characteristics, simplified interfaces between automation devices, and the adaptability to integrate a wide variety of devices and systems. Experience in this nascent field is revealing a rich array of for engineering decisions and the application of complexity theory. To test the decisions, computer simulations are used to reveal insights about design, demand elasticity, and the limits of response (including consumer fatigue). Agent-based approaches lend themselves well in the simulation to modeling the participation and interaction of each piece of equipment on a distribution feeder. This paper discusses rate design and simulation experiences at the distribution feeder level where consumers and their HVAC systems and water heaters on a feeder receive real-time pricing signals.

  2. Ames Lab 101: Real-Time 3D Imaging

    ScienceCinema (OSTI)

    Zhang, Song

    2012-08-29T23:59:59.000Z

    Ames Laboratory scientist Song Zhang explains his real-time 3-D imaging technology. The technique can be used to create high-resolution, real-time, precise, 3-D images for use in healthcare, security, and entertainment applications.

  3. Fast-paced, real-time multifaceted action Complex battlefield

    E-Print Network [OSTI]

    Ernst, Damien

    for the design of intelligent agents for real-time strategy games Next steps Raphael Fonteneau is a postdoctoral

  4. REAL-TIME NON-PHOTOREALISTIC RENDERING TECHNIQUES

    E-Print Network [OSTI]

    Weske, Mathias

    REAL-TIME NON-PHOTOREALISTIC RENDERING TECHNIQUES FOR ILLUSTRATING 3D SCENES AND THEIR DYNAMICS This thesis addresses real-time non-photorealistic rendering techniques and their applications in interactive visualization. Real-time rendering has emerged as an important discipline within computer graphics developing

  5. Adaptive Fault Tolerance in Real Time Cloud Computing Sheheryar Malik

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Adaptive Fault Tolerance in Real Time Cloud Computing Sheheryar Malik Research Team OASIS INRIA.huet@inria.fr Abstract -- With the increasing demand and benefits of cloud computing infrastructure, real time computing can be performed on cloud infrastructure. A real time system can take advantage of intensive computing

  6. Real time speech formant analyzer and display

    DOE Patents [OSTI]

    Holland, George E. (Ames, IA); Struve, Walter S. (Ames, IA); Homer, John F. (Ames, IA)

    1987-01-01T23:59:59.000Z

    A speech analyzer for interpretation of sound includes a sound input which converts the sound into a signal representing the sound. The signal is passed through a plurality of frequency pass filters to derive a plurality of frequency formants. These formants are converted to voltage signals by frequency-to-voltage converters and then are prepared for visual display in continuous real time. Parameters from the inputted sound are also derived and displayed. The display may then be interpreted by the user. The preferred embodiment includes a microprocessor which is interfaced with a television set for displaying of the sound formants. The microprocessor software enables the sound analyzer to present a variety of display modes for interpretive and therapeutic used by the user.

  7. REAL TIME DATA FOR REMEDIATION ACTIVITIES [11505

    SciTech Connect (OSTI)

    BROCK CT

    2011-01-13T23:59:59.000Z

    Health physicists from the CH2M HILL Plateau Remediation Company collaborated with Berkeley Nucleonics Corporation to modify the SAM 940 isotope identifier instrument to be used for nuclear waste remediation. These modifications coupled with existing capabilities of the SAM 940 have proven to be invaluable during remediation activities, reducing disposal costs by allowing swift remediation of targeted areas that have been identified as having isotopes of concern (IOC), and eliminating multiple visits to sites by declaring an excavation site clear of IOCs before demobilizing from the site. These advantages are enabled by accumulating spectral data for specific isotopes that is nearly 100 percent free of false positives, which are filtered out in 'real time.'

  8. Real time speech formant analyzer and display

    DOE Patents [OSTI]

    Holland, G.E.; Struve, W.S.; Homer, J.F.

    1987-02-03T23:59:59.000Z

    A speech analyzer for interpretation of sound includes a sound input which converts the sound into a signal representing the sound. The signal is passed through a plurality of frequency pass filters to derive a plurality of frequency formants. These formants are converted to voltage signals by frequency-to-voltage converters and then are prepared for visual display in continuous real time. Parameters from the inputted sound are also derived and displayed. The display may then be interpreted by the user. The preferred embodiment includes a microprocessor which is interfaced with a television set for displaying of the sound formants. The microprocessor software enables the sound analyzer to present a variety of display modes for interpretive and therapeutic used by the user. 19 figs.

  9. Dannenberg and Thompson, Real-Time Software Synthesis on Superscalar Architectures Real-Time Software Synthesis on Superscalar

    E-Print Network [OSTI]

    Dannenberg, Roger B.

    Dannenberg and Thompson, Real-Time Software Synthesis on Superscalar Architectures 1 Real-Time Software Synthesis on Superscalar Architectures1 Roger B. Dannenberg and Nick Thompson School of Computer: Roger B. Dannenberg and Nick Thompson, "Real-Time Software Synthesis on Superscalar Architectures

  10. From Ptides to PtidyOS, Designing Distributed Real-Time Embedded Systems

    E-Print Network [OSTI]

    Zou, Jia

    2011-01-01T23:59:59.000Z

    hard real-time and soft real-time systems. Hard real-timein immediate system failures, while soft real-time systemsof both hard and soft real-time sub-systems. To address this

  11. Energy Efficient Scheduling for Real-Time Systems

    E-Print Network [OSTI]

    Gupta, Nikhil

    2012-02-14T23:59:59.000Z

    The goal of this dissertation is to extend the state of the art in real-time scheduling algorithms to achieve energy efficiency. Currently, Pfair scheduling is one of the few scheduling frameworks which can optimally schedule a periodic real...

  12. FUTURE POWER GRID INITIATIVE Real-time High-Performance

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE Real-time High-Performance Computing Infrastructure for Next- Generation Power Grid Analysis OBJECTIVE » We are developing infrastructure, software, formal models for real Infrastructure Operations Center (EIOC), the Pacific Northwest National Laboratory's (PNNL) national electric

  13. A Real-Time Decision Support System for High Cost Oil-Well Drilling Operations

    E-Print Network [OSTI]

    Aamodt, Agnar

    A Real-Time Decision Support System for High Cost Oil-Well Drilling Operations Odd Erik Gundersen In this paper we present DrillEdge - a commercial and award winning software system that monitors oil-well drilling operations in order to reduce non-productive time (NPT). DrillEdge utilizes case-based reasoning

  14. Risk-adjusted monitoring of survival times

    SciTech Connect (OSTI)

    Sego, Landon H.; Reynolds, Marion R.; Woodall, William H.

    2009-02-26T23:59:59.000Z

    We consider the monitoring of clinical outcomes, where each patient has a di®erent risk of death prior to undergoing a health care procedure.We propose a risk-adjusted survival time CUSUM chart (RAST CUSUM) for monitoring clinical outcomes where the primary endpoint is a continuous, time-to-event variable that may be right censored. Risk adjustment is accomplished using accelerated failure time regression models. We compare the average run length performance of the RAST CUSUM chart to the risk-adjusted Bernoulli CUSUM chart, using data from cardiac surgeries to motivate the details of the comparison. The comparisons show that the RAST CUSUM chart is more efficient at detecting a sudden decrease in the odds of death than the risk-adjusted Bernoulli CUSUM chart, especially when the fraction of censored observations is not too high. We also discuss the implementation of a prospective monitoring scheme using the RAST CUSUM chart.

  15. Evaluation of Concurrency Control Strategies for Mixed Soft Real-Time Database Systems

    E-Print Network [OSTI]

    Cheng, Reynold Cheng Chun

    1 Evaluation of Concurrency Control Strategies for Mixed Soft Real-Time Database Systems Kam soft real-time database systems (MSRTDBS), in which both non-real-time and soft real-time transactions of both soft real-time and non-real-time transactions under different real-time supports in the system

  16. Infrared luminescence for real time ionizing radiation detection

    SciTech Connect (OSTI)

    Veronese, Ivan, E-mail: ivan.veronese@unimi.it; Mattia, Cristina De; Cantone, Marie Claire [Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria 16, 20133 Milano (Italy); Fasoli, Mauro; Chiodini, Norberto; Vedda, Anna [Dipartimento di Scienza dei Materiali, Università degli Studi di Milano-Bicocca, Via Cozzi 55, 20125 Milano (Italy); Mones, Eleonora [Medical Physics Department, Azienda Ospedaliera Maggiore della Carità, Corso Mazzini 18, 28100 Novara (Italy)

    2014-08-11T23:59:59.000Z

    Radio-luminescence (RL) optical fiber sensors enable a remote, punctual, and real time detection of ionizing radiation. However, the employment of such systems for monitoring extended radiation fields with energies above the Cerenkov threshold is still challenging, since a spurious luminescence, namely, the “stem effect,” is also generated in the passive fiber portion exposed to radiation. Here, we present experimental measurements on Yb-doped silica optical fibers irradiated with photon fields of different energies and sizes. The results demonstrate that the RL of Yb{sup 3+}, displaying a sharp emission line at about 975?nm, is free from any spectral superposition with the spurious luminescence. This aspect, in addition with the suitable linearity, reproducibility, and sensitivity properties of the Yb-doped fibers, paves the way to their use in applications where an efficient stem effect removal is required.

  17. Real-time neural network earthquake profile predictor

    DOE Patents [OSTI]

    Leach, Richard R. (Castro Valley, CA); Dowla, Farid U. (Castro Valley, CA)

    1996-01-01T23:59:59.000Z

    A neural network has been developed that uses first-arrival energy to predict the characteristics of impending earthquake seismograph signals. The propagation of ground motion energy through the earth is a highly nonlinear function. This is due to different forms of ground motion as well as to changes in the elastic properties of the media throughout the propagation path. The neural network is trained using seismogram data from earthquakes. Presented with a previously unseen earthquake, the neural network produces a profile of the complete earthquake signal using data from the first seconds of the signal. This offers a significant advance in the real-time monitoring, warning, and subsequent hazard minimization of catastrophic ground motion.

  18. Real-time neural network earthquake profile predictor

    DOE Patents [OSTI]

    Leach, R.R.; Dowla, F.U.

    1996-02-06T23:59:59.000Z

    A neural network has been developed that uses first-arrival energy to predict the characteristics of impending earthquake seismograph signals. The propagation of ground motion energy through the earth is a highly nonlinear function. This is due to different forms of ground motion as well as to changes in the elastic properties of the media throughout the propagation path. The neural network is trained using seismogram data from earthquakes. Presented with a previously unseen earthquake, the neural network produces a profile of the complete earthquake signal using data from the first seconds of the signal. This offers a significant advance in the real-time monitoring, warning, and subsequent hazard minimization of catastrophic ground motion. 17 figs.

  19. Unified Modeling of Complex Real-Time Control Systems

    E-Print Network [OSTI]

    Hai, He; Chi-Lan, Cai

    2011-01-01T23:59:59.000Z

    Complex real-time control system is a software dense and algorithms dense system, which needs modern software engineering techniques to design. UML is an object-oriented industrial standard modeling language, used more and more in real-time domain. This paper first analyses the advantages and problems of using UML for real-time control systems design. Then, it proposes an extension of UML-RT to support time-continuous subsystems modeling. So we can unify modeling of complex real-time control systems on UML-RT platform, from requirement analysis, model design, simulation, until generation code.

  20. REAL TIME SYSTEM OPERATIONS 2006-2007

    E-Print Network [OSTI]

    Eto, Joseph H.

    2008-01-01T23:59:59.000Z

    SCE, WAPA, PG&E Data • PDC – PI Interface frequency dataIntegration of CA ISO PDC with Arbiters California Real-Timeand end?user feedback.    PDC to PI interface for Phasor 

  1. Real time density functional simulations of quantum scale conductance

    E-Print Network [OSTI]

    Evans, Jeremy Scott

    2009-01-01T23:59:59.000Z

    We study electronic conductance through single molecules by subjecting a molecular junction to a time dependent potential and propagating the electronic state in real time using time-dependent density functional theory ...

  2. Real-Time Dispatchability of Bulk Power Systems with Volatile ...

    E-Print Network [OSTI]

    2015-03-16T23:59:59.000Z

    the concept of real-time dispatchability (RTDA) of power systems with variable energy resources .... eration control, economic dispatch and unit commitment. Ref

  3. Optimization Online - Stochastic Real-Time Scheduling of Wind ...

    E-Print Network [OSTI]

    Alireza Soroudi

    2015-01-03T23:59:59.000Z

    Jan 3, 2015 ... Stochastic Real-Time Scheduling of Wind-thermal Generation Units in an Electric Utility. Alireza Soroudi (alireza.soroudi ***at*** ucd.ie)

  4. Optimization Online - Real-Time Dispatchability of Bulk Power ...

    E-Print Network [OSTI]

    Wei Wei

    2015-03-16T23:59:59.000Z

    Mar 16, 2015 ... Real-Time Dispatchability of Bulk Power Systems with Volatile Renewable Generations. Wei Wei (wei-wei04 ***at*** mails.tsinghua.edu.cn)

  5. One-way, real time wave front converters

    SciTech Connect (OSTI)

    Kwong, S.; Yariv, A.

    1986-03-03T23:59:59.000Z

    Optical one-way, real time wave front cleanup by means of photorefractively pumped oscillators is reported. A factor of 4000 increase in beam brightness has been achieved.

  6. Sandia National Laboratories: Cost Effective Real Time Wave Assessment...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Cost Effective Real Time Wave Assessment Tool ARPAe: Innovation Activities On November 25, 2013, in Technology Showcase Nominees Partnering with Sandia Research Facilities Current...

  7. Real-Time Pricing of Electricity: An Assessment

    E-Print Network [OSTI]

    Baughman, M. L.; Zarnikau, J.

    . This paper reviews one of these new rate design proposals, "spot market" or "real-time" pricing, and discusses some recent implementations in Texas....

  8. Sandia National Laboratories: real-time industrial energy management...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    grid integration of renewable-energy resources, real-time residential and industrial energy management and control, lifetime degradation and science and various forms of advanced...

  9. DOE Announces Webinars on Real Time Energy Management, Solar...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    typically required. You can also watch archived webinars and browse previously aired videos, slides, and transcripts. Upcoming Webinars February 4: Live Webinar on Real Time...

  10. Real-time Vehicle Reidentification System for Freeway Performance Measurements

    E-Print Network [OSTI]

    Jeng, Shin-Ting

    2007-01-01T23:59:59.000Z

    Tok, A. (2005). “Anonymous Vehicle Tracking for Real-timeField Investigation of Advanced Vehicle Reidentificationvariance, land changing, and vehicle heterogeneity. In:

  11. REAL TIME SYSTEM OPERATIONS 2006-2007

    E-Print Network [OSTI]

    Eto, Joseph H.

    2008-01-01T23:59:59.000Z

    and Data Acquisition (SCADA) data and off?line model?based California ISO’s current SCADA/Energy Management System  (Monitoring System  RTSO  RTVSA  SCADA/EMS  SCE  SDG&E  TRP 

  12. Reliable Distributed Real-time and Embedded Systems Through Safe Middleware Adaptation

    E-Print Network [OSTI]

    MAT), which opportunistically leverages the available slack in the over-provisioned resources of individual resource monitoring framework that can pinpoint in real-time the available slack in the system that is used over-provisioned resources to deal with worst-case failure scenarios. The formation of the systems

  13. Rate and Loss Control for Video Transmission over UMTS using Real-Time Protocols

    E-Print Network [OSTI]

    Bouras, Christos

    Rate and Loss Control for Video Transmission over UMTS using Real-Time Protocols Antonios G focus on the design and implementation of a rate and loss control mechanism for monitoring the UMTS]. In addition, when two different applications are running together, the network should guarantee

  14. Real-Time Message Routing and Scheduling Ronald Koch1

    E-Print Network [OSTI]

    Nabben, Reinhard

    Real-Time Message Routing and Scheduling Ronald Koch1 , Britta Peis1 , Martin Skutella1.math.tu-berlin.de/coga/ Abstract. Exchanging messages between nodes of a network (e.g., em- bedded computers) is a fundamental issue in real-time systems involving critical routing and scheduling decisions. In order for messages

  15. Flexible Scheduling Methods and Tools for Real-Time Control

    E-Print Network [OSTI]

    , and real-time control systems constitute an important subclass of these embedded systems. Modern automoFlexible Scheduling Methods and Tools for Real-Time Control Systems Dan Henriksson Department- tive systems, e.g., contain several embedded ECUs (electronic control units) used for various feedback

  16. Realistic Rendering of an Organ Surface in Real-Time

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Realistic Rendering of an Organ Surface in Real-Time for Laparoscopic Surgery Simulation Raphaël : 10.1007/s003710100118 #12;Abstract This paper deals with the rendering issues of the problem. To meet the real-time constraint we use advanced graphics features such as multi- pass rendering, Open

  17. Power Minimisation for Real-time Dataflow Applications

    E-Print Network [OSTI]

    Kuzmanov, Georgi

    at lower frequencies on hardware resources thereby consuming less power. Real-time applications have for dataflow modelled real-time applications that may be mapped onto multiple hardware resources. We achieve this by using an application's static slack in order to perform DVFS while still satisfying the application

  18. NSTX Real-Time Control GUI User's Guide

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    the use of the Power Supply Real-Time Control (PSRTC) Graphical User Interface (GUI), shown below. AsideNSTX Real-Time Control GUI User's Guide March 28, 2008 #12;This document is meant to describe from the PCS, the NSTX control system is made up of several executables/applications that each function

  19. Real-Time Networked Control with Multiple Clients

    E-Print Network [OSTI]

    Lee, Minhyung

    2010-01-14T23:59:59.000Z

    robot referred to as Clients 1, 2, and 3, respectively were used as Networked-Based-control (NCS) test beds to validate the proposed strategies. For real-time operation, Linux with Real-Time Application Interface (RTAI) and Control and Measurement...

  20. Real-time Remote Sensing of Snowmobiles Emissions at

    E-Print Network [OSTI]

    Denver, University of

    Real-time Remote Sensing of Snowmobiles Emissions at Yellowstone National Park: An Oxygenated Fuel 68509 #12;Real-time Remote Sensing of Snowmobile Emissions at Yellowstone National Park 2 Executive emissions from snowmobiles. Ratios of CO, HC and toluene to CO2 were measured and used to calculate %CO, %HC

  1. Arnold Schwarzenegger REAL-TIME GRID RELIABILITY

    E-Print Network [OSTI]

    Monitoring System (RTDMSTM) Manu Parashar & Jim Dyer Electric Power Group (EPG) RTDMS CA ISO TRAINING SESSION and decrease on sink generators). Transmission lines removed (forced or scheduled) from service between source Energy Research Program Prepared By: Lawrence Berkeley National Laboratory Consortium for Electric

  2. System, device, and methods for real-time screening of live cells, biomarkers, and chemical signatures

    DOE Patents [OSTI]

    Sundaram, S Kamakshi [Richland, WA; Riley, Brian J [West Richland, WA; Weber, Thomas J [Richland, WA; Sacksteder, Colette A [West Richland, WA; Addleman, R Shane [Benton City, WA

    2011-06-07T23:59:59.000Z

    An ATR-FTIR device and system are described that defect live-cell responses to stimuli and perturbations in real-time. The system and device can monitor perturbations resulting from exposures to various physical, chemical, and biological materials in real-time, as well as those sustained over a long period of time, including those associated with stimuli having unknown modes-of-action (e.g. nanoparticles). The device and system can also be used to identify specific chemical species or substances that profile cellular responses to these perturbations.

  3. Real time or faster-than-real-time simulation of airflow in buildings Wangda Zuo Qingyan Chen*

    E-Print Network [OSTI]

    Chen, Qingyan "Yan"

    Real time or faster-than-real-time simulation of airflow in buildings Wangda Zuo Qingyan Chen flow simulation is crucial for emergency management in buildings, such as fire and accidental or intentional release of chemical/biological agents (contaminants). The simulation results can then be used

  4. Modeling Decentralized Real-Time Control by State Space Partition of Timed Thanikesavan Sivanthi, Srivas Chennu

    E-Print Network [OSTI]

    Kent, University of

    are driving modern real-time control systems from centralized to decentralized architec- tures for the validation and verification of real- time control systems. This paper introduces an algorith- mic methodology to translate the state space visualization of a centralized real-time control system to a decentralized one

  5. COMPUTER-VIDEO METHOD EVALUATES REAL MOTION DATA IN REAL TIME FOR STUDENTS

    E-Print Network [OSTI]

    Zollman, Dean

    COMPUTER-VIDEO METHOD EVALUATES REAL MOTION DATA IN REAL TIME FOR STUDENTS Roman Dengler, Karl dimension. These devices, however, are·normally limited to one dimension. The video camera, on the other of information recorded by the video camera into useable, digital information. For this purpose, we devised

  6. A real-time airborne scatterometer data processor

    E-Print Network [OSTI]

    Reisor, Gary James

    1976-01-01T23:59:59.000Z

    A REAL-TIME AIRBORNE SCATTEROMETER DATA PROCES'SOR A Thesis by Gary James Reisor Submitted to the Graduate College of Texas A)M Vniversity in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE August 1976 Major... Subject: Electrical Fngineering A REAL-TIME AIRBORNE SCATTEROMETER DATA PROCESSOR A Thesis by Gary James Reisor Approved as to style and content by: arrman o Committee Hea o Depa tment em er Mem er August 1976 ABSTRACT A Real-time Airborne...

  7. Integrating Security and Real-Time Requirements Using Covert

    E-Print Network [OSTI]

    Son, Sang H.

    ÐConcurrency control, covert channel analysis, database systems, locking protocols, multilevel security, real secure database systems use an access control mechanism based on the Bell- LaPadula model [3]. This model. Multilevel security requirements introduce a new dimension to transaction processing in real-time database

  8. Developing Improved Travel Time Reliability Measures For Real-time

    E-Print Network [OSTI]

    Bertini, Robert L.

    reliability Use for prioritizing improvements Outline #12; 95th Percentile Travel Time Travel Time Index: mean travel time divided by free flow travel time Buffer Index: difference between 95th percentile travel time and mean travel time, divided by mean travel time Planning Time Index: 95th percentile

  9. Real-Time IPMI Protocol Analyzer

    E-Print Network [OSTI]

    Kozak, T; Makowski, D

    2011-01-01T23:59:59.000Z

    The Advanced Telecommunications Computing Ar- chitecture (ATCA) is a modern platform, which gains popularity, not only in telecommunication, but also in others fields like High Energy Physics (HEP) experiments. Computing systems based on ATCA provide high performance and efficiency and are char- acterized by significant reliability, availability and serviceability. ATCA offers these features because of an integrated manage- ment system realized by the Intelligent Platform Management Interface (IPMI) implemented on dedicated Intelligent Platform Management Controller (IPMC). IPMC is required on each ATCA board to fulfill the ATCA standard and is responsible for many vital procedures performed to support proper operation of ATCA system. It covers, among others, activation and deactivations of modules, monitoring of actual parameters or controlling fans. The commercially available IPMI implementations are expensive and often not suited to demands of specific ATCA applications and available hardware. Thus, many r...

  10. Managing Contention and Timing Constraints in a RealTime Database System \\Lambda

    E-Print Network [OSTI]

    Son, Sang H.

    22903, USA Abstract Previous work in real­time database management systems (RT­DBMS) has primarily based an actual RT­ DBMS on a real­time microkernel operating system. A real RT­DBMS must confront many practical of con­ structing a RT­DBMS is divided into three basic prob­ lems: dealing with resource contention

  11. Toward natural interaction in the real world: real-time gesture recognition

    E-Print Network [OSTI]

    Yin, Ying

    Using a new hand tracking technology capable of tracking 3D hand postures in real-time, we developed a recognition system for continuous natural gestures. By natural gestures, we mean those encountered in spontaneous ...

  12. IT Licentiate theses Practical Verification of Real-Time Systems

    E-Print Network [OSTI]

    David, Alexandre

    IT Licentiate theses 2001-013 Practical Verification of Real-Time Systems ALEXANDRE DAVID UPPSALA UPPSALA SWEDEN Dissertation for the degree of Licentiate of Philosophy in Computer Science at Uppsala

  13. IT Licentiate theses Practical Verification of RealTime Systems

    E-Print Network [OSTI]

    David, Alexandre

    IT Licentiate theses 2001­013 Practical Verification of Real­Time Systems ALEXANDRE DAVID UPPSALA UPPSALA SWEDEN Dissertation for the degree of Licentiate of Philosophy in Computer Science at Uppsala

  14. Real-time analog acquisition of electrophysiological signals with Soma

    E-Print Network [OSTI]

    Jonas, Eric Michael

    2009-01-01T23:59:59.000Z

    Soma is a high-density recording system for real-time acquisition and analysis of extracellular electrophysiological signals. Here I describe the design, implementation, and evaluation of the Soma Acquisition Board, an ...

  15. Decoupled Sampling for Real-Time Graphics Pipelines

    E-Print Network [OSTI]

    Ragan-Kelley, Jonathan

    2010-03-29T23:59:59.000Z

    We propose decoupled sampling, an approach that decouples shading from visibility sampling in order to enable motion blur and depth-of-field at reduced cost. More generally, it enables extensions of modern real-time graphics ...

  16. Volatility of Power Grids Under Real-Time Pricing

    E-Print Network [OSTI]

    Roozbehani, Mardavij

    The paper proposes a framework for modeling and analysis of the dynamics of supply, demand, and clearing prices in power systems with real-time retail pricing and information asymmetry. Characterized by passing on the ...

  17. Real-time Water Waves with Wave Particles

    E-Print Network [OSTI]

    Yuksel, Cem

    2010-10-12T23:59:59.000Z

    This dissertation describes the wave particles technique for simulating water surface waves and two way fluid-object interactions for real-time applications, such as video games. Water exists in various different forms in our environment...

  18. Repsol Cartagena Utilities Real Time Optimization -- A Success Story

    E-Print Network [OSTI]

    Piccolo, M.; Shyr, S.

    Repsol Cartagena Utilities Real Time Optimization - A Success Story Mike Piccolo and Steve Shyr, Honeywell, and TBD, Repsol, Spain In 1998 Honeywell Hi-Spec Solutions successfully implemented a Utilities Optimization system at Repsol' s Cartagena...

  19. New Real-Time Quantum Efficiency Measurement System: Preprint

    SciTech Connect (OSTI)

    Young, D. L.; Egaas, B.; Pinegar, S.; Stradins, P.

    2008-05-01T23:59:59.000Z

    This paper describes a newly developed technique for measuring the quantum eficiiency in solar cells in real-time using a unique, electronically controlled, full-spectrum light source.

  20. Extending STI for Demanding Hard-Real-Time Systems Deepaksrivats

    E-Print Network [OSTI]

    Dean, Alexander G.

    Extending STI for Demanding Hard-Real-Time Systems Benjamin Welch Shobhit Kanaujia Adarsh Seetharam to implement given functionality on a generic processor, saving money, power, and energy and simplifying design

  1. GPU programming for real-time watercolor simulation

    E-Print Network [OSTI]

    Scott, Jessica Stacy

    2005-02-17T23:59:59.000Z

    simulated watercolors in real time. The GPU, or Graphics Processing Unit, is an effcient and highly parallel processor located on the graphics card of a computer; GPU programming is touted as a way to improve performance in graphics and non...

  2. Real-time continuous gesture recognition for natural multimodal interaction

    E-Print Network [OSTI]

    Yin, Ying, Ph. D. Massachusetts Institute of Technology

    2014-01-01T23:59:59.000Z

    I have developed a real-time continuous gesture recognition system capable of dealing with two important problems that have previously been neglected: (a) smoothly handling two different kinds of gestures: those characterized ...

  3. A practical acceleration algorithm for real-time imaging

    E-Print Network [OSTI]

    Sumbul, Uygar

    A practical acceleration algorithm for real-time magnetic resonance imaging (MRI) is presented. Neither separate training scans nor embedded training samples are used. The Kalman filter based algorithm provides a fast and ...

  4. Compilation and Synthesis for RealTime Embedded Controllers

    E-Print Network [OSTI]

    Compilation and Synthesis for Real­Time Embedded Controllers Martin FrË?anzle 1 and Markus MË?uller­Olm.Fraenzle@Informatik.Uni­Oldenburg.DE 2 University of Dortmund, Department of Computer Science, FB 4, LS 5, 44221 Dortmund, Germany Markus.Mueller­OlmË?anzle and Markus MË?uller­Olm non­digital nature, i.e. these systems belong to the class of real­time embedded

  5. High speed, real-time, camera bandwidth converter

    DOE Patents [OSTI]

    Bower, Dan E; Bloom, David A; Curry, James R

    2014-10-21T23:59:59.000Z

    Image data from a CMOS sensor with 10 bit resolution is reformatted in real time to allow the data to stream through communications equipment that is designed to transport data with 8 bit resolution. The incoming image data has 10 bit resolution. The communication equipment can transport image data with 8 bit resolution. Image data with 10 bit resolution is transmitted in real-time, without a frame delay, through the communication equipment by reformatting the image data.

  6. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Radiation ProtectionRaising fundsReal PropertyReal-TimeReal-Time

  7. PROTECTING INFRASTRUCTURE ASSETS FROM REAL-TIME

    E-Print Network [OSTI]

    Burmester, Mike

    to critical infrastructure assets. The paper defines a threat model, an- alyzes vulnerabilities, proposes in an electricity grid. Also, it discusses the impact of run-time attacks on TC-compliant critical infrastructure. The crucial nature of the services provided by critical infrastructure systems and the vulnerabilities found

  8. Evaluating transport coefficients in real time thermal field theory

    E-Print Network [OSTI]

    S. Mallik; Sourav Sarkar

    2012-11-12T23:59:59.000Z

    Transport coefficients in a hadronic gas have been calculated earlier in the imaginary time formulation of thermal field theory. The steps involved are to relate the defining retarded correlation function to the corresponding time-ordered one and to evaluate the latter in the conventional perturbation expansion. Here we carry out both the steps in the real time formulation.

  9. Real-Time Building Energy Simulation Using EnergyPlus and the Building Controls Test Bed

    E-Print Network [OSTI]

    Pang, Xiufeng

    2013-01-01T23:59:59.000Z

    Figure 9 Lighting electric power comparison between real-measurement Lighting Electric Power Comparison kW real-time

  10. Real-time airborne particle analyzer

    DOE Patents [OSTI]

    Reilly, Peter T.A.

    2012-10-16T23:59:59.000Z

    An aerosol particle analyzer includes a laser ablation chamber, a gas-filled conduit, and a mass spectrometer. The laser ablation chamber can be operated at a low pressure, which can be from 0.1 mTorr to 30 mTorr. The ablated ions are transferred into a gas-filled conduit. The gas-filled conduit reduces the electrical charge and the speed of ablated ions as they collide and mix with buffer gases in the gas-filled conduit. Preferably, the gas filled-conduit includes an electromagnetic multipole structure that collimates the nascent ions into a beam, which is guided into the mass spectrometer. Because the gas-filled conduit allows storage of vast quantities of the ions from the ablated particles, the ions from a single ablated particle can be analyzed multiple times and by a variety of techniques to supply statistically meaningful analysis of composition and isotope ratios.

  11. Measurement function paces move to real-time pipe line

    SciTech Connect (OSTI)

    Leitschuh, R.C. Jr. (Tenneco Gas, Houston, TX (United States))

    1994-05-01T23:59:59.000Z

    As progressive companies confront today's demanding competitive environment, trends are developing in the quest for the ideal pipe line operating system. Common among strategies is the concept of real time'' operations. Real time must be built and it will be defined by its weakest link. Ideally, real time should be a condition where any authorized person can access the system and obtain information that is current at any time. Real time necessitates that data are not just generated or collected on a continuous basis but are given added value and processed continuously and instantaneously. Ultimately, real time implies that queried information is accurate and can be used without correction or alteration. Generally, measurement hardware can be divided into three groups: Transmitters to acquire the dynamic variables of pressures and temperatures; Gas property determination equipment such as chromatographs, calorimeters and gravitometers for gas composition variables; Flow computers for processing and adding value to data. This paper discusses these components along with software systems, measurement methods, correction methods and cost benefit.

  12. Response time satisfaction in real-time knowledge-based systems

    E-Print Network [OSTI]

    Frank, Deborah Lee

    1990-01-01T23:59:59.000Z

    vehicles or plant operations. Planning systems have already been used extensively in robots and autonomous vehicles. However, integrating knowledge-based systems into real-time environments is difficult because they cannot always respond to external... [11]. There is a natural niche for expert systems and planning systems in real-time computing environments. A common application of expert systems, system diagnosis, can be integrated into many different real-time systems, such as autonomous...

  13. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Radiation ProtectionRaising fundsReal PropertyReal-Time

  14. Approximate Response Time for Fixed Priority Real-Time Systems with Energy-Harvesting

    E-Print Network [OSTI]

    Boyer, Edmond

    Approximate Response Time for Fixed Priority Real-Time Systems with Energy-Harvesting Yasmina sufficient schedulability tests for fixed-priority pre-emptive scheduling of a real-time system under energy constraints. In this problem, energy is harvested from the ambient environment and used to replenish a storage

  15. Towards Real-Time Detection and Tracking of Blob-Filaments in Fusion Plasma Big Data

    E-Print Network [OSTI]

    Wu, Lingfei; Sim, Alex; Churchill, Michael; Choi, Jong Y; Stathopoulos, Andreas; Chang, Cs; Klasky, Scott

    2015-01-01T23:59:59.000Z

    Magnetic fusion could provide an inexhaustible, clean, and safe solution to the global energy needs. The success of magnetically-confined fusion reactors demands steady-state plasma confinement which is challenged by the blob-filaments driven by the edge turbulence. Real-time analysis can be used to monitor the progress of fusion experiments and prevent catastrophic events. However, terabytes of data are generated over short time periods in fusion experiments. Timely access to and analyzing this amount of data demands properly responding to extreme scale computing and big data challenges. In this paper, we apply outlier detection techniques to effectively tackle the fusion blob detection problem on extremely large parallel machines. We present a real-time region outlier detection algorithm to efficiently find blobs in fusion experiments and simulations. In addition, we propose an efficient scheme to track the movement of region outliers over time. We have implemented our algorithms with hybrid MPI/OpenMP and ...

  16. Toward Real Time Data Analysis for Smart Grids

    SciTech Connect (OSTI)

    Yin, Jian; Gorton, Ian; Sharma, Poorva

    2012-11-10T23:59:59.000Z

    This paper describes the architecture and design of a novel system for supporting large-scale real-time data analysis for future power grid systems. The widespread deployment of renewable generation, smart grid controls, energy storage, plug-in hybrids, and new conducting materials will require fundamental changes in the operational concepts and principal components of the grid. As a result, the whole system becomes highly dynamic and requires constant adjusting based on real time data. Even though millions of sensors such as phase measurement units (PMU) and smart meters are being widely deployed, a data layer that can analyze this amount of data in real time is needed. Unlike the data fabric in other cloud services, the data layer for smart grids has some unique design requirements. First, this layer must provide real time guarantees. Second, this layer must be scalable to allow a large number of applications to access the data from millions of sensors in real time. Third, reliability is critical and this layer must be able to continue to provide service in face of failures. Fourth, this layer must be secure. We address these challenges though a scalable system architecture that integrates the I/O and data processing capability in a devise set of devices. Data process operations can be placed anywhere from sensors, data storage devices, to control centers. We further employ compression to improve performance. We design a lightweight compression customized for power grid data. Our system can reduce end-to-end response time by reduce I/O overhead through compression and overlap compression operations with I/O. The initial prototype of our system was demonstrated with several use cases from PNNL’s FPGI and show that our system can provide real time guarantees to a diverse set of applications.

  17. Test applications for heterogeneous real-time network testbed

    SciTech Connect (OSTI)

    Mines, R.F.; Knightly, E.W.

    1994-07-01T23:59:59.000Z

    This paper investigates several applications for a heterogeneous real-time network testbed. The network is heterogeneous in terms of network devices, technologies, protocols, and algorithms. The network is real-time in that its services can provide per-connection end-to-end performance guarantees. Although different parts of the network use different algorithms, all components have the necessary mechanisms to provide performance guarantees: admission control and priority scheduling. Three applications for this network are described in this paper: a video conferencing tool, a tool for combustion modeling using distributed computing, and an MPEG video archival system. Each has minimum performance requirements that must be provided by the network. By analyzing these applications, we provide insights to the traffic characteristics and performance requirements of practical real-time loads.

  18. Real-Time Control with Parametric Timed Reachability Games

    E-Print Network [OSTI]

    Boyer, Edmond

    for which the existence of a parameter valuation, such that there is a strategy for the controller to reach set of parameter valuations. Keywords: Timed automata, game theory, parameters, control, verification, model-checking 1. INTRODUCTION Formal methods are widely used in the analysis of time critical systems

  19. Integration of Real-Time Data Into Building Automation Systems

    SciTech Connect (OSTI)

    Mark J. Stunder; Perry Sebastian; Brenda A. Chube; Michael D. Koontz

    2003-04-16T23:59:59.000Z

    The project goal was to investigate the possibility of using predictive real-time information from the Internet as an input to building management system algorithms. The objectives were to identify the types of information most valuable to commercial and residential building owners, managers, and system designers. To comprehensively investigate and document currently available electronic real-time information suitable for use in building management systems. Verify the reliability of the information and recommend accreditation methods for data and providers. Assess methodologies to automatically retrieve and utilize the information. Characterize equipment required to implement automated integration. Demonstrate the feasibility and benefits of using the information in building management systems. Identify evolutionary control strategies.

  20. Handheld portable real-time tracking and communications device

    DOE Patents [OSTI]

    Wiseman, James M. (Albuquerque, NM); Riblett, Jr., Loren E. (Edgewood, NM); Green, Karl L. (Albuquerque, NM); Hunter, John A. (Albuquerque, NM); Cook, III, Robert N. (Rio Rancho, NM); Stevens, James R. (Arlington, VA)

    2012-05-22T23:59:59.000Z

    Portable handheld real-time tracking and communications devices include; a controller module, communications module including global positioning and mesh network radio module, data transfer and storage module, and a user interface module enclosed in a water-resistant enclosure. Real-time tracking and communications devices can be used by protective force, security and first responder personnel to provide situational awareness allowing for enhance coordination and effectiveness in rapid response situations. Such devices communicate to other authorized devices via mobile ad-hoc wireless networks, and do not require fixed infrastructure for their operation.

  1. Flash Memory Garbage Collection in Hard Real-Time Systems

    E-Print Network [OSTI]

    Lai, Chien-An

    2012-10-19T23:59:59.000Z

    collection and compare it to that of more proactive schemes. I develop formulas to assess the schedulability of hard real- time periodic task sets under simpli ed memory consumption models. Results show that I prove the proactive schemes achieve the larger... work in the area of ash memory management. Moreover, we review the previous research about garbage collection in real-time system. In Chapter III we will describe a simpli ed ash memory model that will be used throughout the rest of the thesis...

  2. A heterogeneous hierarchical architecture for real-time computing

    SciTech Connect (OSTI)

    Skroch, D.A.; Fornaro, R.J.

    1988-12-01T23:59:59.000Z

    The need for high-speed data acquisition and control algorithms has prompted continued research in the area of multiprocessor systems and related programming techniques. The result presented here is a unique hardware and software architecture for high-speed real-time computer systems. The implementation of a prototype of this architecture has required the integration of architecture, operating systems and programming languages into a cohesive unit. This report describes a Heterogeneous Hierarchial Architecture for Real-Time (H{sup 2} ART) and system software for program loading and interprocessor communication.

  3. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeedingTechnicalPurchase,Reaction-Driven RestructuringReal-TimeReal-Time

  4. Real-Time Building Energy Simulation Using EnergyPlus and the Building Controls Test Bed

    E-Print Network [OSTI]

    Pang, Xiufeng

    2013-01-01T23:59:59.000Z

    generation building energy simulation program. Energy andReal-Time Building Energy Simulation Using EnergyPlus andREAL-TIME BUILDING ENERGY SIMULATION USING ENERGYPLUS AND

  5. Improving Building Performance at Urban Scale with a Framework for Real-time Data Sharing

    E-Print Network [OSTI]

    Pang, Xiufeng

    2014-01-01T23:59:59.000Z

    Real-time Data Sharing Xiufeng Pang, Tianzhen Hong, Mary AnnReal-time Data Sharing Xiufeng Pang, Tianzhen Hong*, Mary

  6. Real-time MISO UWB Radio Testbed and Waveform Design

    E-Print Network [OSTI]

    Qiu, Robert Caiming

    Real-time MISO UWB Radio Testbed and Waveform Design Yu Song, Zhen Hu, Nan Guo, and Robert C. Qiu-input single-output (MISO) ultra-wideband (UWB) radio testbed, which involves Xinlix Virtex-5 Field in indoor environment. The transmitted MISO signals are optimized in the passband with a bandwidth up to 500

  7. Real-Time Redox Measurements during Endoplasmic Reticulum Stress Reveal

    E-Print Network [OSTI]

    Mullins, Dyche

    Real-Time Redox Measurements during Endoplasmic Reticulum Stress Reveal Interlinked Protein Folding.10.011 SUMMARY Disruption of protein folding in the endoplasmic reticulum (ER) causes unfolded proteins to accumu is active. Because ER redox po- tential is optimized for oxidative protein folding, we reasoned

  8. Real Time Computational Algorithms for Eddy Current Based Damage Detection

    E-Print Network [OSTI]

    Real Time Computational Algorithms for Eddy Current Based Damage Detection H. T. Banks y, Michele L such damages by application of an eddy current based technique coupled with reduced order modeling. We begin by developing a model for a speci#12;c eddy current method in which we make some simplifying assumptions

  9. Kalman Filter in Real Time URBIS Date Jan 2010

    E-Print Network [OSTI]

    Vuik, Kees

    2010-0000 Kalman Filter in Real Time URBIS Date Jan 2010 Author(s) R. Kranenburg Projectnumber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4 Kalman Filter 14 4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4.2 Algorithm of Kalman Filtering . . . . . . . . . . . . . . . . . . . . 14 4.3 Sensitivity Tests

  10. Model Reference Adaptive Control Framework for Real Time Traffic

    E-Print Network [OSTI]

    Minnesota, University of

    Adaptive Control #12;12 Prescriptive Dynamic Traffic Assignment A Prediction Model and the Reference ModelModel Reference Adaptive Control Framework for Real Time Traffic Management Under Emergency Movement Volume Adaptive Controller Model Reference Adaptive Control (MRAC) Assumptions Super Zone Concept

  11. Compilation and Synthesis for RealTime Embedded Controllers

    E-Print Network [OSTI]

    Müller-Olm, Markus

    Compilation and Synthesis for Real­Time Embedded Controllers Martin FrË?anzle 1 and Markus MË?uller­Olm.Fraenzle@Informatik.Uni­Oldenburg.DE 2 University of Dortmund, Department of Computer Science, FB 4, LS 5, 44221 Dortmund, Germany Markus.Mueller­Olm

  12. Compilation and Synthesis for Real-Time Embedded Controllers

    E-Print Network [OSTI]

    Müller-Olm, Markus

    Compilation and Synthesis for Real-Time Embedded Controllers Martin Fr¨anzle1 and Markus M¨uller-Olm.Fraenzle@Informatik.Uni-Oldenburg.DE 2 University of Dortmund, Department of Computer Science, FB 4, LS 5, 44221 Dortmund, Germany Markus.Mueller-Olm

  13. REAL-TIME EQUILIBRIUM RECONSTRUCTION IN A TOKAMAK

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    REAL-TIME EQUILIBRIUM RECONSTRUCTION IN A TOKAMAK J. Blum, C. Boulbe and B. Faugeras Laboratoire J reconstruction of the plasma current density in a Tokamak and of its equilibrium. The problem consists equilibrium of a plasma in a Tokamak. The experimental measurements that enable this identification

  14. GENETIC ALGORITHMS APPLIED TO REAL TIME MULTIOBJECTIVE OPTIMIZATION PROBLEMS

    E-Print Network [OSTI]

    Coello, Carlos A. Coello

    of searching for multiple solutions concurrently in a single run. Transforming this multiobjective optimizationGENETIC ALGORITHMS APPLIED TO REAL TIME MULTIOBJECTIVE OPTIMIZATION PROBLEMS Z. BINGUL, A. S@harpo.tnstate.edu ABSTRACT Genetic algorithms are often well suited for multiobjective optimization problems. In this work

  15. Real-time Ray Tracing p et SMP Multiprocessor system

    E-Print Network [OSTI]

    af billeder med høj realisme, der på mange måder er traditionel (hardware) trekantsrasterisering scenen i real-time. #12;4 Resumé #12;5 Abstract Raytracing is a powerful technique for high resolution. Unfortunately raytracing has one weakness: - It demands a high amount of raw computer power! This almost always

  16. TOWARDS REAL-TIME GENERATION SCHEDULING IN MICROGRIDS WITH

    E-Print Network [OSTI]

    Zhang, Junshan

    TOWARDS REAL-TIME GENERATION SCHEDULING IN MICROGRIDS WITH PERFORMANCE GUARANTEE LIAN LU, JINLONG TU, CHI-KIN CHAU, MINGHUA CHEN, ZHAO XU AND XIAOJUN LIN INTRODUCTION Microgrid is an emerging- generation improves generation efficiency by 2-3x. A key problem in microgrid operations is how to schedule

  17. Timeliness via Speculation for Real-Time Databases Azer Bestavros

    E-Print Network [OSTI]

    extremes. PCC locking protocols detect con icts as soon as they occur and resolve them using blocking. OCC protocols detect con icts at transac- tion committime and resolve them using rollbacks (restarts). For real-time databases, blockages and rollbacks are hazards that increase the likelihood of transactions missing

  18. Real time sensors in geothermal fluids: their costs and benefits

    SciTech Connect (OSTI)

    Jensen, G.A.; Shannon, D.W.; Hazelton, R.F.

    1982-02-01T23:59:59.000Z

    A summary of the PNL effort, a background discussion on geothermal power plants, and a discussion of several cases where problems were identified and in some cases prevented are included. Cost factors, savings, and benefits-costs to the sponsor are summarized and brief conclusions concerning the benefits of having real time instrumentation installed in the power plant are characterized.

  19. Real Time Digital Processing of GPS Measurements for Transmission Engineering

    E-Print Network [OSTI]

    ; dynamic thermal line rating; transmission engineering. I. Introduction The Global Positioning System1 Real Time Digital Processing of GPS Measurements for Transmission Engineering C. Mensah-Bonsu G satellites launched and maintained by the United States gov- ernment. Power engineering applications based

  20. Model Predictive Control based Real Time Power System Protection Schemes

    E-Print Network [OSTI]

    Kumar, Ratnesh

    1 Model Predictive Control based Real Time Power System Protection Schemes Licheng Jin, Member by controlling the production, absorption as well as flow of reactive power at various locations in the system predictive control, trajectory sensitivity, voltage stabilization, switching control, power system I

  1. 2013 UEC Tokyo. Real-time Mobile Food

    E-Print Network [OSTI]

    Yanai, Keiji

    . miso soup 3. Egg sunny-side up 4. Sirloin cutlet 5. Salmom meuniere 6. Fried fish 7. Boiled fish 8 · Real-time image recognition · Estimation of the more reliable direction 3 key features of the system the result ­ The window with the maximum score Estimation of the more reliable direction 1 result #12; 2013

  2. Concurrent and Real Time Systems: the CSP approach Steve Schneider

    E-Print Network [OSTI]

    Doran, Simon J.

    Concurrent and Real Time Systems: the CSP approach by Steve Schneider First published 1999 Systems the CSP approach Steve Schneider A Wiley-Interscience Publication JOHN WILEY & SONS, INC. New York Whitehead This book provides an introduction to Communicating Sequential Processes (CSP) and its use

  3. Constraint Orientated Specification with CSP and Real Time Temporal Logic

    E-Print Network [OSTI]

    Kent, University of

    Constraint Orientated Specification with CSP and Real Time Temporal Logic Justin Pearson Department Processes (CSP) [Hoa85] and a version of Propositional Temporal Logic (PTL), derived from [Eme90]. CSP. The behaviour of a CSP process is dependent on its environment; it is therefore difficult to assert global

  4. Hierarchical Architecture for Real-Time Adaptive Resource Management

    E-Print Network [OSTI]

    Cardei, Ionut

    , Mihaela Cardei1 , Allalaghatta Pavan2 Honeywell Technology Center 3660 Technology Drive, Minneapolis, MN 55418, USA 1 {ionut, mihaela}@cs.umn.edu, 2 {jha, pavan}@htc.honeywell.com Abstract. This paper presents the Real Time Adaptive Resource Management system (RTARM1 ), developed at the Honeywell Technology Center

  5. Functional Speci cation of Real-Time and Hybrid Systems ?

    E-Print Network [OSTI]

    of embedded real-time systems in a physical environment. Recently, a number of description and spec- i cationSys" and by BMW (Bay- erische Motoren Werke AG). #12;slight modi cations must be carried through, so, or sent to, the environment. Therefore, every channel re ects an input or output communication history

  6. CONTAM 03 Embedded Networked Sensing in Soils: A Stochastic Data Assimilation Approach to Network Design and Real-time State and Parameter

    E-Print Network [OSTI]

    California at Los Angeles, University of

    of soil state and flux are improved when soil hydraulic parameters are updated. CONTAM 03.3 System(s Design and Real-time State and Parameter Estimation CONTAM 03.1 Overview The County Sanitation District the groundwater beneath the irrigated lands. Thus, a monitoring and modeling system providing real-time soil state

  7. Real-Time Bid Optimization for Group-Buying Ads

    E-Print Network [OSTI]

    Balakrishnan, Raju

    2012-01-01T23:59:59.000Z

    Group-buying ads seeking a minimum number of customers before the deal expiry are increasingly used by the daily-deal providers. Unlike the traditional web ads, the advertiser's profits for group-buying ads depends on the time to expiry and additional customers needed to satisfy the minimum group size. Since both these quantities are time-dependent, optimal bid amounts to maximize profits change with every impression. Consequently, traditional static bidding strategies are far from optimal. Instead, bid values need to be optimized in real-time to maximize expected bidder profits. This online optimization of deal profits is made possible by the advent of ad exchanges offering real-time (spot) bidding. To this end, we propose a real-time bidding strategy for group-buying deals based on the online optimization of bid values. We derive the expected bidder profit of deals as a function of the bid amounts, and dynamically vary bids to maximize profits. Further, to satisfy time constraints of the online bidding, we ...

  8. Real Time Diagnostics for Algae-final-sm

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Radiation ProtectionRaising fundsReal Property ManagementReal-time

  9. Real-Time Airborne Particle Analyzer - Energy Innovation Portal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Radiation ProtectionRaising fundsReal Property ManagementReal-time

  10. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Radiation ProtectionRaising fundsReal PropertyReal-Time Chemical

  11. Real-Time Building Energy Simulation Using EnergyPlus and the Building Controls Test Bed

    SciTech Connect (OSTI)

    Pang, Xiufeng; Bhattachayra, Prajesh; O'Neill, Zheng; Haves, Philip; Wetter, Michael; Bailey, Trevor

    2011-11-01T23:59:59.000Z

    Most commercial buildings do not perform as well in practice as intended by the design and their performances often deteriorate over time. Reasons include faulty construction, malfunctioning equipment, incorrectly configured control systems and inappropriate operating procedures (Haves et al., 2001, Lee et al., 2007). To address this problem, the paper presents a simulation-based whole building performance monitoring tool that allows a comparison of building actual performance and expected performance in real time. The tool continuously acquires relevant building model input variables from existing Energy Management and Control System (EMCS). It then reports expected energy consumption as simulated of EnergyPlus. The Building Control Virtual Test Bed (BCVTB) is used as the software platform to provide data linkage between the EMCS, an EnergyPlus model, and a database. This paper describes the integrated real-time simulation environment. A proof-of-concept demonstration is also presented in the paper.

  12. REAL-TIME SYSTEMS AND NETWORKS Aspect-based methodology and model-driven tool for real-time embedded

    E-Print Network [OSTI]

    Baudoin, Geneviève

    to handle model transformation complexities, improve consistency between control design and its: K. Perko. Real-time embedded control system (RTECS) design follows usually a V-process composed of three major steps: system control analysis (control law design), system specification (software design

  13. Managing high-bandwidth real-time data storage

    SciTech Connect (OSTI)

    Bigelow, David D. [Los Alamos National Laboratory; Brandt, Scott A [Los Alamos National Laboratory; Bent, John M [Los Alamos National Laboratory; Chen, Hsing-Bung [Los Alamos National Laboratory

    2009-09-23T23:59:59.000Z

    There exist certain systems which generate real-time data at high bandwidth, but do not necessarily require the long-term retention of that data in normal conditions. In some cases, the data may not actually be useful, and in others, there may be too much data to permanently retain in long-term storage whether it is useful or not. However, certain portions of the data may be identified as being vitally important from time to time, and must therefore be retained for further analysis or permanent storage without interrupting the ongoing collection of new data. We have developed a system, Mahanaxar, intended to address this problem. It provides quality of service guarantees for incoming real-time data streams and simultaneous access to already-recorded data on a best-effort basis utilizing any spare bandwidth. It has built in mechanisms for reliability and indexing, can scale upwards to meet increasing bandwidth requirements, and handles both small and large data elements equally well. We will show that a prototype version of this system provides better performance than a flat file (traditional filesystem) based version, particularly with regard to quality of service guarantees and hard real-time requirements.

  14. Robust Performance of Soft Real-time Networked Control Systems with Data Dropouts 1

    E-Print Network [OSTI]

    Lemmon, Michael

    Robust Performance of Soft Real-time Networked Control Systems with Data Dropouts 1 Qiang Ling, . This class of systems is a model for soft real-time control systems in which the feedback path is implemented, the networked control system becomes a soft real-time system. In soft real-time networks, data packets may

  15. Feedback Control of the Sawtooth Period through Real Time Control of the Ion Cyclotron Resonance Frequency

    E-Print Network [OSTI]

    Feedback Control of the Sawtooth Period through Real Time Control of the Ion Cyclotron Resonance Frequency

  16. Real-time Pricing Demand Response in Operations

    SciTech Connect (OSTI)

    Widergren, Steven E.; Marinovici, Maria C.; Berliner, Teri; Graves, Alan

    2012-07-26T23:59:59.000Z

    Abstract—Dynamic pricing schemes have been implemented in commercial and industrial application settings, and recently they are getting attention for application to residential customers. Time-of-use and critical-peak-pricing rates are in place in various regions and are being piloted in many more. These programs are proving themselves useful for balancing energy during peak periods; however, real-time (5 minute) pricing signals combined with automation in end-use systems have the potential to deliver even more benefits to operators and consumers. Besides system peak shaving, a real-time pricing system can contribute demand response based on the locational marginal price of electricity, reduce load in response to a generator outage, and respond to local distribution system capacity limiting situations. The US Department of Energy (DOE) is teaming with a mid-west electricity service provider to run a distribution feeder-based retail electricity market that negotiates with residential automation equipment and clears every 5 minutes, thus providing a signal for lowering or raising electric consumption based on operational objectives of economic efficiency and reliability. This paper outlines the capability of the real-time pricing system and the operational scenarios being tested as the system is rolled-out starting in the first half of 2012.

  17. Real-Time Scheduling for WirelessHART Networks Abusayeed Saifullah, You Xu, Chenyang Lu, and Yixin Chen

    E-Print Network [OSTI]

    Lu, Chenyang

    financial and environmental impacts. For instance, real-time monitoring of level measurement and control are required to avoid over- filling of oil tanks that may lead to serious economic loss and environmental. The stan- dard has been instrumental in the adoption and deploy- ment of wireless network technology

  18. Real time markerless motion tracking using linked kinematic chains

    DOE Patents [OSTI]

    Luck, Jason P. (Arvada, CO); Small, Daniel E. (Albuquerque, NM)

    2007-08-14T23:59:59.000Z

    A markerless method is described for tracking the motion of subjects in a three dimensional environment using a model based on linked kinematic chains. The invention is suitable for tracking robotic, animal or human subjects in real-time using a single computer with inexpensive video equipment, and does not require the use of markers or specialized clothing. A simple model of rigid linked segments is constructed of the subject and tracked using three dimensional volumetric data collected by a multiple camera video imaging system. A physics based method is then used to compute forces to align the model with subsequent volumetric data sets in real-time. The method is able to handle occlusion of segments and accommodates joint limits, velocity constraints, and collision constraints and provides for error recovery. The method further provides for elimination of singularities in Jacobian based calculations, which has been problematic in alternative methods.

  19. A Novel comprehensive method for real time Video Motion Detection Surveillance

    E-Print Network [OSTI]

    Mishra, Sumita

    2011-01-01T23:59:59.000Z

    This article describes a comprehensive system for surveillance and monitoring applications. The development of an efficient real time video motion detection system is motivated by their potential for deployment in the areas where security is the main concern. The paper presents a platform for real time video motion detection and subsequent generation of an alarm condition as set by the parameters of the control system. The prototype consists of a mobile platform mounted with RF camera which provides continuous feedback of the environment. The received visual information is then analyzed by user for appropriate control action, thus enabling the user to operate the system from a remote location. The system is also equipped with the ability to process the image of an object and generate control signals which are automatically transmitted to the mobile platform to track the object.

  20. Real time 3D and heterogeneous data fusion

    SciTech Connect (OSTI)

    Little, C.Q.; Small, D.E.

    1998-03-01T23:59:59.000Z

    This project visualizes characterization data in a 3D setting, in real time. Real time in this sense means collecting the data and presenting it before it delays the user, and processing faster than the acquisition systems so no bottlenecks occur. The goals have been to build a volumetric viewer to display 3D data, demonstrate projecting other data, such as images, onto the 3D data, and display both the 3D and projected images as fast as the data became available. The authors have examined several ways to display 3D surface data. The most effective was generating polygonal surface meshes. They have created surface maps form a continuous stream of 3D range data, fused image data onto the geometry, and displayed the data with a standard 3D rendering package. In parallel with this, they have developed a method to project real-time images onto the surface created. A key component is mapping the data on the correct surfaces, which requires a-priori positional information along with accurate calibration of the camera and lens system.

  1. Imaging gene expression in real-time using aptamers

    SciTech Connect (OSTI)

    Shin, Il Chung [Ames Laboratory

    2012-11-02T23:59:59.000Z

    Signal transduction pathways are usually activated by external stimuli and are transient. The downstream changes such as transcription of the activated genes are also transient. Real-time detection of promoter activity is useful for understanding changes in gene expression, especially during cell differentiation and in development. A simple and reliable method for viewing gene expression in real time is not yet available. Reporter proteins such as fluorescent proteins and luciferase allow for non-invasive detection of the products of gene expression in living cells. However, current reporter systems do not provide for real-time imaging of promoter activity in living cells. This is because of the long time period after transcription required for fluorescent protein synthesis and maturation. We have developed an RNA reporter system for imaging in real-time to detect changes in promoter activity as they occur. The RNA reporter uses strings of RNA aptamers that constitute IMAGEtags (Intracellular MultiAptamer GEnetic tags), which can be expressed from a promoter of choice. The tobramycin, neomycin and PDC RNA aptamers have been utilized for this system and expressed in yeast from the GAL1 promoter. The IMAGEtag RNA kinetics were quantified by RT-qPCR. In yeast precultured in raffinose containing media the GAL1 promoter responded faster than in yeast precultured in glucose containing media. IMAGEtag RNA has relatively short half-life (5.5 min) in yeast. For imaging, the yeast cells are incubated with their ligands that are labeled with fluorescent dyes. To increase signal to noise, ligands have been separately conjugated with the FRET (Förster resonance energy transfer) pairs, Cy3 and Cy5. With these constructs, the transcribed aptamers can be imaged after activation of the promoter by galactose. FRET was confirmed with three different approaches, which were sensitized emission, acceptor photobleaching and donor lifetime by FLIM (fluorescence lifetime imaging microscopy). Real-time transcription was measured by FLIM-FRET, which was detected by the decrease in donor lifetime resulting from ligand binding to IMAGEtags that were newly synthesized from the activated GAL1 promoter. The FRET signal was specific for transcribed IMAGEtags.

  2. Imaging gene expression in real-time using aptamers

    SciTech Connect (OSTI)

    Shin, Il Chung

    2011-12-13T23:59:59.000Z

    Signal transduction pathways are usually activated by external stimuli and are transient. The downstream changes such as transcription of the activated genes are also transient. Real-time detection of promoter activity is useful for understanding changes in gene expression, especially during cell differentiation and in development. A simple and reliable method for viewing gene expression in real time is not yet available. Reporter proteins such as fluorescent proteins and luciferase allow for non-invasive detection of the products of gene expression in living cells. However, current reporter systems do not provide for real-time imaging of promoter activity in living cells. This is because of the long time period after transcription required for fluorescent protein synthesis and maturation. We have developed an RNA reporter system for imaging in real-time to detect changes in promoter activity as they occur. The RNA reporter uses strings of RNA aptamers that constitute IMAGEtags (Intracellular MultiAptamer GEnetic tags), which can be expressed from a promoter of choice. The tobramycin, neomycin and PDC RNA aptamers have been utilized for this system and expressed in yeast from the GAL1 promoter. The IMAGEtag RNA kinetics were quantified by RT-qPCR. In yeast precultured in raffinose containing media the GAL1 promoter responded faster than in yeast precultured in glucose containing media. IMAGEtag RNA has relatively short half-life (5.5 min) in yeast. For imaging, the yeast cells are incubated with their ligands that are labeled with fluorescent dyes. To increase signal to noise, ligands have been separately conjugated with the FRET (Förster resonance energy transfer) pairs, Cy3 and Cy5. With these constructs, the transcribed aptamers can be imaged after activation of the promoter by galactose. FRET was confirmed with three different approaches, which were sensitized emission, acceptor photobleaching and donor lifetime by FLIM (fluorescence lifetime imaging microscopy). Real-time transcription was measured by FLIM-FRET, which was detected by the decrease in donor lifetime resulting from ligand binding to IMAGEtags that were newly synthesized from the activated GAL1 promoter. The FRET signal was specific for transcribed IMAGEtags.

  3. Reliable Downlink Scheduling for Wireless Networks with Real-Time and Non-Real Time Clients 

    E-Print Network [OSTI]

    Jain, Abhishek

    2014-08-05T23:59:59.000Z

    is general enough to be implemented in IEEE 802.11e based wireless network [44]. 3.2 Wireless Channel Model We consider fading wireless channel and assume that the channel change over time on the scale of fast fading. The channel is considered to be constant...

  4. International Workshop on Analysis Tools and Methodologies for Embedded and Real-time

    E-Print Network [OSTI]

    Lipari, Giuseppe

    1st International Workshop on Analysis Tools and Methodologies for Embedded and Real-time Systems application areas, from Real- Time Operating Systems to distributed systems, from safety critical to soft real of the International Workshop on Anaysis Tools and Methodologies for Embedded and Real-time Systems (WATERS

  5. LHCb's Real-Time Alignment in Run2

    E-Print Network [OSTI]

    Batozskaya, Varvara

    2015-01-01T23:59:59.000Z

    Stable, precise spatial alignment and PID calibration are necessary to achieve optimal detector performances. During Run2, LHCb will have a new real-time detector alignment and calibration to reach equivalent performances in the online and offline reconstruction. This offers the opportunity to optimise the event selection by applying stronger constraints as well as hadronic particle identification at the trigger level. The required computing time constraints are met thanks to a new dedicated framework using the multi-core farm infrastructure for the trigger.

  6. Steps to Establish a Real-Time Transmission Monitoring System...

    Broader source: Energy.gov (indexed) [DOE]

    evaluation of how such a system could be established if one is to be pursued. This joint report merely describes the steps necessary to establish and implement an...

  7. Real-time Health Monitoring of Mechanical Structures

    E-Print Network [OSTI]

    Ray, Asok

    , years for bridges and roads, and number of starts for diesel engines. It is also assumed that the state of damage in a mechanical structure bears a direct correlation with the amount of usage. However, one

  8. Real Time PMU-Based Stability Monitoring Final Project Report

    E-Print Network [OSTI]

    .g., North America SynchroPhasor Initiative (NASPI) and the introduction of PMU functionality in relays the increasing amount of PMU data for operation, planning, protection, and control. This research proposes new

  9. Oxybuoy: Constructing a Real-Time Inexpensive Hypoxia Monitoring Platform

    E-Print Network [OSTI]

    Nesterenko, Mikhail

    of Biology, University of Akron Abstract We present a low-cost sensor buoy designed for unattended dissolved oxygen measurement in aquatic environment. We describe the buoy's architectural design and three with controlled oxy- gen level, a lake deployment and an extensive electric power consump- tion test. Our

  10. Real-time Monitoring of Large Scientific Simulations

    E-Print Network [OSTI]

    Pascucci, Valerio

    space-filling curves. The Lebesgue curve is also known as Z-order, Morton, .... Curve. Special case. · Simple load balancing on visualization side. · Fast slicing, isosurfacing, and volume rendering. #12;The7 B8 B13 B14 B15 B16 · Takes advantage of simulation load balancing · One Data Source per compute

  11. Microwave Plasma Monitoring System For Real-Time Elemental Analysis

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    air for the presence of minor amounts of elements, particularly transition metals, rare earth elements, actinides, and alkali and alkaline earth elements. The invention...

  12. Time-lapse seismic monitoring of subsurface fluid flow

    E-Print Network [OSTI]

    Yuh, Sung H.

    2004-09-30T23:59:59.000Z

    Time-lapse seismic monitoring repeats 3D seismic imaging over a reservoir to map fluid movements in a reservoir. During hydrocarbon production, the fluid saturation, pressure, and temperature of a reservoir change, thereby altering the acoustic...

  13. Real-time calibration of a feedback trap

    SciTech Connect (OSTI)

    Gavrilov, Mom?ilo; Jun, Yonggun; Bechhoefer, John, E-mail: johnb@sfu.ca [Department of Physics, Simon Fraser University, Burnaby, British Columbia V5A 1S6 (Canada)

    2014-09-15T23:59:59.000Z

    Feedback traps use closed-loop control to trap or manipulate small particles and molecules in solution. They have been applied to the measurement of physical and chemical properties of particles and to explore fundamental questions in the non-equilibrium statistical mechanics of small systems. These applications have been hampered by drifts in the electric forces used to manipulate the particles. Although the drifts are small for measurements on the order of seconds, they dominate on time scales of minutes or slower. Here, we show that a recursive maximum likelihood (RML) algorithm can allow real-time measurement and control of electric and stochastic forces over time scales of hours. Simulations show that the RML algorithm recovers known parameters accurately. Experimental estimates of diffusion coefficients are also consistent with expected physical properties.

  14. Near real time vapor detection and enhancement using aerosol adsorption

    DOE Patents [OSTI]

    Novick, V.J.; Johnson, S.A.

    1999-08-03T23:59:59.000Z

    A vapor sample detection method is described where the vapor sample contains vapor and ambient air and surrounding natural background particles. The vapor sample detection method includes the steps of generating a supply of aerosol that have a particular effective median particle size, mixing the aerosol with the vapor sample forming aerosol and adsorbed vapor suspended in an air stream, impacting the suspended aerosol and adsorbed vapor upon a reflecting element, alternatively directing infrared light to the impacted aerosol and adsorbed vapor, detecting and analyzing the alternatively directed infrared light in essentially real time using a spectrometer and a microcomputer and identifying the vapor sample. 13 figs.

  15. Near real time vapor detection and enhancement using aerosol adsorption

    DOE Patents [OSTI]

    Novick, Vincent J. (Downers Grove, IL); Johnson, Stanley A. (Countryside, IL)

    1999-01-01T23:59:59.000Z

    A vapor sample detection method where the vapor sample contains vapor and ambient air and surrounding natural background particles. The vapor sample detection method includes the steps of generating a supply of aerosol that have a particular effective median particle size, mixing the aerosol with the vapor sample forming aerosol and adsorbed vapor suspended in an air stream, impacting the suspended aerosol and adsorbed vapor upon a reflecting element, alternatively directing infrared light to the impacted aerosol and adsorbed vapor, detecting and analyzing the alternatively directed infrared light in essentially real time using a spectrometer and a microcomputer and identifying the vapor sample.

  16. Supernova Legacy Survey (SNLS) : real time operations and photometric analysis

    E-Print Network [OSTI]

    N. Palanque-Delabrouille; for the SNLS collaboration

    2005-09-15T23:59:59.000Z

    Type Ia supernovae (SN Ia) have provided the first evidence for an accelerating universe and for the existence of an unknown ``dark energy'' driving this expansion. The 5-year Supernova Legacy Survey (SNLS) will deliver \\~700 type Ia supernovae and as many type II supernovae with well-sampled light curves in 4 filters g', r', i' and z'. The current status of the project will be presented, along with the real time processing leading to the discovery and spectroscopic observation of the supernovae. We also present an offline selection of the SN candidates which aims at identifying and eliminating potential selection biases.

  17. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeedingTechnicalPurchase,Reaction-Driven RestructuringReal-Time Chemical

  18. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeedingTechnicalPurchase,Reaction-Driven RestructuringReal-Time

  19. REAL-TIME DISPATCHING OF GUIDED AND UNGUIDED AUTOMOBILE SERVICE UNITS WITH SOFT TIME WINDOWS

    E-Print Network [OSTI]

    Krumke, Sven O.

    REAL-TIME DISPATCHING OF GUIDED AND UNGUIDED AUTOMOBILE SERVICE UNITS WITH SOFT TIME WINDOWS SVEN O that are no worse than 1% from optimum on state-of-the-art personal computers. 1. INTRODUCTION The German Automobile Association ADAC (Allgemeiner Deutscher Automobil- Club), the second largest automobile club worldwide

  20. The timing behavior of message-driven distributed algorithms scheduled with real-

    E-Print Network [OSTI]

    The timing behavior of message-driven distributed algorithms scheduled with real- time scheduling simulation of a distributed system with real-time scheduling of tasks. The Problem: Since we consider message-driven algorithms, the messages influence the real- time scheduling on other nodes. This scheduling influences

  1. A Multimedia Server on the Spring RealTime System 1

    E-Print Network [OSTI]

    Shenoy, Prashant

    A Multimedia Server on the Spring Real­Time System 1 Hiroyuki Kaneko, John A. Stankovic Department of both traditional real­time control processing and multimedia processing has enormous potential­time computation and less determin­ istic multimedia soft real­time computation. In this paper, we propose

  2. Cost Optimal Operation of Thermal Energy Storage System with Real-Time Prices

    E-Print Network [OSTI]

    Cost Optimal Operation of Thermal Energy Storage System with Real-Time Prices Toru Kashima, Member of the result [4]. The same can be said for time varying real-time prices. Real-time energy pricing is not yet such as chillers. Energy resources such as electricity or natural gas are bought from suppliers at certain prices

  3. Time Series Evaluation of Portal Monitor Data

    SciTech Connect (OSTI)

    Robinson, Sean M.; Bender, Sarah E.; Lopresti, Charles A.; Woodring, Mitchell L.

    2008-12-08T23:59:59.000Z

    Radiation portal monitors screen cargo and personal vehicle traffic at international border crossings to detect and interdict illicit sources which may be present in the commerce stream. One difficulty faced by RPM systems is the prospect of false alarms, or undesired alarms due to background fluctuation, or Naturally-Occurring Radioactive Material (NORM) sources in the commerce stream. In general, NORM alarms represent a significant fraction of the nuisance alarms at international border crossings, particularly with Polyvinyl-Toluene (PVT) RPM detectors, which have only very weak spectral differentiation capability. With PVT detectors, the majority of detected photon events fall within the Compton continuum of the material, allowing for very little spectral information to be preserved [1]. Previous work has shown that these detectors can be used for limited spectroscopy, utilizing around 8 spectral bins to further differentiate some NORM and other nuisance sources [2]. NaI based systems achieve much more detailed spectral resolution from each measurement of a source, but still combine all measurements over a vehicle's occupancy in order to arrive at a spectrum to be analyzed.

  4. Initial Studies Toward Real-Time Transmission Path Rating

    SciTech Connect (OSTI)

    Singh, Ruchi; Diao, Ruisheng; Cai, Niannian; Huang, Zhenyu; Tuck, Brian; Guo, Xinxin

    2012-07-26T23:59:59.000Z

    Demand continues to increase while transmission line construction is being constrained by multiple factors— economic, environmental, and political. Effective and efficient utilization of transmission lines is thus of great importance in an open access environment. Large blocks of power are transferred from areas with inexpensive generation to heavy load demand areas or areas with high generation costs. This results in some transmission paths being loaded closer to their path ratings, which limits further power transfer between areas. Traditionally, rating of important paths was determined off line by assuming the worst-case study scenario; once determined, it could be used for years. With increasing uncertainty arising from rapid growth of renewable energy and smart technologies, path rating studies are needed in near-real time to account for the latest system status and support a reliable and economic power grid. This paper adopts a simplified procedure based on standards of the North American Electric Reliability Corporation (NERC) to determine total transfer capability (TTC) or transfer limit for the purpose of demonstrating the benefits and necessity of real-time path rating. Initial studies are conducted to compute TTC of a two-area test system and a 39-bus test system. Results indicate that path rating can be significantly affected by loading conditions, generator schedules, system topology and other factors.

  5. Real-time individualized training vectors for experiential learning.

    SciTech Connect (OSTI)

    Willis, Matt; Tucker, Eilish Marie; Raybourn, Elaine Marie; Glickman, Matthew R.; Fabian, Nathan

    2011-01-01T23:59:59.000Z

    Military training utilizing serious games or virtual worlds potentially generate data that can be mined to better understand how trainees learn in experiential exercises. Few data mining approaches for deployed military training games exist. Opportunities exist to collect and analyze these data, as well as to construct a full-history learner model. Outcomes discussed in the present document include results from a quasi-experimental research study on military game-based experiential learning, the deployment of an online game for training evidence collection, and results from a proof-of-concept pilot study on the development of individualized training vectors. This Lab Directed Research & Development (LDRD) project leveraged products within projects, such as Titan (Network Grand Challenge), Real-Time Feedback and Evaluation System, (America's Army Adaptive Thinking and Leadership, DARWARS Ambush! NK), and Dynamic Bayesian Networks to investigate whether machine learning capabilities could perform real-time, in-game similarity vectors of learner performance, toward adaptation of content delivery, and quantitative measurement of experiential learning.

  6. Real time evaluation of overranging in helical computed tomography

    E-Print Network [OSTI]

    Trevisan, Diego; Ravanelli, Daniele; Valentini, Aldo

    2014-01-01T23:59:59.000Z

    Overranging or overscanning increases the dose delivered to patients undergoing helical Computed Tomography examinations. In order to reduce it, nowadays most of the multidetector tomographs close the X-ray beam aperture at the scan extremes. This technical innovation, usually referred to as dynamic or adaptive collimation, also influences the overranging assessment methods. In particular, the film free approach proposed in previous studies is not suitable for these modern tomographs. The present study aims to introduce a new method of estimating overranging with real time dosimetry, even suitable for tomographs equipped with adaptive collimation. The approach proposed is very easy to implement and time saving because only a pencil chamber is required. It is also equivalent in precision and in accuracy to the film based one, considered an absolute benchmark.

  7. On the stability of wholesale electricity markets under real-time pricing

    E-Print Network [OSTI]

    Roozbehani, Mardavij

    The paper proposes a mathematical model for the dynamic evolution of supply, demand, and clearing prices under a class of real-time pricing mechanisms characterized by passing on the real-time wholesale prices to the end ...

  8. High-Energy, Pulsed-Laser Diagnostics for Real-Time Measurements...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    High-Energy, Pulsed-Laser Diagnostics for Real-Time Measurements of Reciprocating Engine PM Emissions High-Energy, Pulsed-Laser Diagnostics for Real-Time Measurements of...

  9. Implementation issues for real-time optimization of a crude unit heat exchanger network

    E-Print Network [OSTI]

    Skogestad, Sigurd

    1 Implementation issues for real-time optimization of a crude unit heat exchanger network Tore Lid of real time optimization results in a crude unit heat exchanger network. Two different control strategies

  10. Is there a source of help for setting up real time wind turbine...

    Open Energy Info (EERE)

    there a source of help for setting up real time wind turbine data reporting ? Home I'd like our students to be able to see historical data as well as real time power generation at...

  11. Real-Time Water Quality Management in the Grassland Water District

    SciTech Connect (OSTI)

    Quinn, Nigel W.T.; Hanna, W. Mark; Hanlon, Jeremy S.; Burns, Josphine R.; Taylor, Christophe M.; Marciochi, Don; Lower, Scott; Woodruff, Veronica; Wright, Diane; Poole, Tim

    2004-12-10T23:59:59.000Z

    The purpose of the research project was to advance the concept of real-time water quality management in the San Joaquin Basin by developing an application to drainage of seasonal wetlands in the Grassland Water District. Real-time water quality management is defined as the coordination of reservoir releases, return flows and river diversions to improve water quality conditions in the San Joaquin River and ensure compliance with State water quality objectives. Real-time water quality management is achieved through information exchange and cooperation between shakeholders who contribute or withdraw flow and salt load to or from the San Joaquin River. This project complements a larger scale project that was undertaken by members of the Water Quality Subcommittee of the San Joaquin River Management Program (SJRMP) and which produced forecasts of flow, salt load and San Joaquin River assimilative capacity between 1999 and 2003. These forecasts can help those entities exporting salt load to the River to develop salt load targets as a mechanism for improving compliance with salinity objectives. The mass balance model developed by this project is the decision support tool that helps to establish these salt load targets. A second important outcome of this project was the development and application of a methodology for assessing potential impacts of real-time wetland salinity management. Drawdown schedules are typically tied to weather conditions and are optimized in traditional practices to maximize food sources for over-wintering wildfowl as well as providing a biological control (through germination temperature) of undesirable weeds that compete with the more proteinaceous moist soil plants such as swamp timothy, watergrass and smartweed. This methodology combines high resolution remote sensing, ground-truthing vegetation surveys using established survey protocols and soil salinity mapping using rapid, automated electromagnetic sensor technology. This survey methodology could be complemented with biological surveys of bird use and invertebrates to produce a robust long-term monitoring strategy for habitat health and sustainability.

  12. Deliberation Scheduling for Planning in Real-Time David J. Musliner

    E-Print Network [OSTI]

    Krebsbach, Kurt D.

    Deliberation Scheduling for Planning in Real-Time David J. Musliner Honeywell Laboratories david.musliner@honeywell

  13. Real Time Visualization of Structural Response through Wireless

    E-Print Network [OSTI]

    Shinozuka, Masanobu

    ~Structural MonitoringBackground ~Structural Monitoring !Cable-based data acquisition systems present some difficulties for structural health monitoring !Cabling and electromagnetic interference !Early damage detection for the structure monitoring in a field environments #12;6 Preliminary StudyPreliminary Study Experimental Setup

  14. ON THE DEVELOPMENT OF A REAL-TIME SIMULATOR ENGINE FOR A HYDRAULIC FORESTRY MACHINE

    E-Print Network [OSTI]

    Papadopoulos, Evangelos

    1 ON THE DEVELOPMENT OF A REAL-TIME SIMULATOR ENGINE FOR A HYDRAULIC FORESTRY MACHINE Evangelos@central.ntua.gr Abstract This work focuses on the development of a real-time training simulator engine for a forestry simulator, hydraulic dynamics, numerical stiffness, real-time, control system 1 Introduction Forestry

  15. Department of Computer Science & Engineering Scheduling Design and Verification for Open Soft Real-time Systems

    E-Print Network [OSTI]

    Smart, William

    Soft Real-time Systems Authors: Robert Glaubius, Terry Tidwell,William D. Smart, and Christopher Gill and verification approach for open soft real-time systems, that can use different decision models, e.g., a Markov of scheduling policies for open soft real-time systems. #12;Scheduling Design and Verification for Open Soft

  16. Kalman Filter in the Real Time URBIS model Date June 2010

    E-Print Network [OSTI]

    Vuik, Kees

    2010-06-03 Kalman Filter in the Real Time URBIS model Date June 2010 Author(s) R. Kranenburg Keywords NOx, Real Time URBIS, Uncertainty, Rijnmond, Kalman filter, Screening process Target Master Thesis Analysis of the uncertainty of the Real Time URBIS model with a Kalman filter 7 1 Introduction 9 2 Model

  17. SIG Technology Review Summer 1994 57 Real-Time Navigation Using the Global Positioning System

    E-Print Network [OSTI]

    Simon, Dan

    SIG Technology Review · Summer 1994 57 Real-Time Navigation Using the Global Positioning System Real-Time Navigation Using the Global Positioning System Dan Simon and Hossny El-Sherief, TRW Ballistic Technology Review · Summer 1994 Real-Time Navigation Using the Global Positioning System introduces errors

  18. Real-time system verification techniques based on abstraction/deduction and model checking

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Real-time system verification techniques based on abstraction/deduction and model checking Eun in or- der to obtain a powerful and highly automatic verification environment for real-time systems. One-Young.Kang@loria.fr Abstract. Our research focuses on verification techniques for real-time systems based on predicate

  19. Real-time Lighting System for Large Group Interaction Joshua Randall

    E-Print Network [OSTI]

    Real-time Lighting System for Large Group Interaction Joshua Randall Massachusetts Institute of Technology May 2002 Abstract Lighting systems have historically been controlled by an individual or small group of human operators working together in real-time. Applications for real-time lighting control

  20. CARSystem: a distributed algorithm for efficient real-time vehicular traffic control

    E-Print Network [OSTI]

    Koothrappally, Joseph

    1997-01-01T23:59:59.000Z

    transfer between individual traffic control processes. Real-time information -obtained by tracking the density profiles that constitute demand at each intersection in real-time-is used by an on-line optimization algorithm to provide real-time adaptive...

  1. Real-Time Scheduling of Energy Harvesting Embedded Systems with Timed Automata

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , in addition to traditional embedded system components, by an energy collector unit (eg a solar panel implants which collect energy from the human body, mobile or fix devices with solar panel or windmill etc) and by an energy storage unit (a battery or a capacitor). One common hypothesis in real-time system theory

  2. Uncertainty quantification in vibration-based structural health monitoring for enhanced decision-making capability

    E-Print Network [OSTI]

    Mao, Zhu

    2012-01-01T23:59:59.000Z

    the need for structural health monitoring", Proc. SPIE 6531,Zagrai, A. , “Structural Health Monitoring; an Enabler forfor real-time structural health monitoring, Clayton, Erik

  3. A non-blocking buffer mechanism for real-time event message communication

    E-Print Network [OSTI]

    Kim, KHK

    2006-01-01T23:59:59.000Z

    of time- constrained messages", IEEE Trans. on Computers,Mechanism for Real-Time Event Message Communicatoin K. H. (in facilitating state message communication from a producer

  4. Systematic Security and Timeliness Tradeoffs in Real-Time Embedded Systems Kyoung-Don Kang

    E-Print Network [OSTI]

    Son, Sang H.

    -time applications such as battlefield monitoring and target track- ing. To this end, we define a quantitative metric

  5. Real-time video tracking using PTZ cameras Sangkyu Kanga

    E-Print Network [OSTI]

    Abidi, Mongi A.

    . This experiment shows that the proposed system can be used to monitor moving targets in widely open areas

  6. Quasi real time in vivo dosimetry for VMAT

    SciTech Connect (OSTI)

    Fidanzio, A.; Azario, L. [Istituto di Fisica, Università Cattolica del Sacro Cuore, Rome 00168 (Italy) [Istituto di Fisica, Università Cattolica del Sacro Cuore, Rome 00168 (Italy); U.O.C di Fisica Sanitaria, Università Cattolica del Sacro Cuore, Rome 00168 (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Roma Tre, Rome 00146 (Italy); Porcelli, A. [U.O.C di Fisica Sanitaria, Università Cattolica del Sacro Cuore, Rome 00168 (Italy)] [U.O.C di Fisica Sanitaria, Università Cattolica del Sacro Cuore, Rome 00168 (Italy); Greco, F. [U.O.C di Fisica Sanitaria, Università Cattolica del Sacro Cuore, Rome 00168 (Italy) [U.O.C di Fisica Sanitaria, Università Cattolica del Sacro Cuore, Rome 00168 (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Roma Tre, Rome 00146 (Italy); Cilla, S. [U.O di Fisica Sanitaria, Fondazione di Ricerca e Cura Giovanni Paolo II, Campobasso 86100, Italy and Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Roma Tre, Rome 00146 (Italy)] [U.O di Fisica Sanitaria, Fondazione di Ricerca e Cura Giovanni Paolo II, Campobasso 86100, Italy and Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Roma Tre, Rome 00146 (Italy); Grusio, M. [Istituto di Fisica, Università Cattolica del Sacro Cuore, Rome 00168 (Italy)] [Istituto di Fisica, Università Cattolica del Sacro Cuore, Rome 00168 (Italy); Balducci, M.; Valentini, V. [U.O.C di Radioterapia, Università Cattolica del Sacro Cuore, Rome 00168 (Italy)] [U.O.C di Radioterapia, Università Cattolica del Sacro Cuore, Rome 00168 (Italy); Piermattei, A., E-mail: a.piermattei@rm.unicatt.it [Istituto di Fisica, Università Cattolica del Sacro Cuore, Rome 00168 (Italy); U.O.C di Fisica Sanitaria, Università Cattolica del Sacro Cuore, Rome 00168 (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Roma Tre, Rome 00168 (Italy)

    2014-06-15T23:59:59.000Z

    Purpose: Results about the feasibility of a method for quasi real timein vivo dosimetry (IVD) at the isocenter point for volumetric modulated arc therapy (VMAT) are here reported. The method is based on correlations between the EPID signal and the dose on the beam central axis. Moreover, the ?-analysis of EPID images was adopted to verify off-axis reproducibility of fractionated plan delivery. Methods: An algorithm to reconstructin vivo the isocenter dose, D{sub iso}, for RapidArc treatments has been developed. 20 VMAT plans, optimized with two opposite arcs, for prostate, pancreas, and head treatments have been delivered by a Varian linac both to a conic PMMA phantom with elliptical section and to patients. The ratios R between reconstructed D{sub iso} and the planned doses were determined for phantom and patient irradiations adopting an acceptance criterion of ±5%. In total, 40 phantom checks and 400 patient checks were analyzed. Moreover, 3% and 3 mm criteria were adopted for portal image ?-analysis to assess patient irradiation reproducibility. Results: The average ratio R, between reconstructed and planned doses for the PMMA phantom irradiations was equal to 1.007 ± 0.024. When the IVD method was applied to the 20 patients, the average R ratio was equal to 1.003 ± 0.017 and 96% of the tests were within the acceptance criteria. The portal image ?-analysis supplied 88% of the tests within the pass rates ?{sub mean} ? 0.4 and P{sub ?<1} ? 98%. All the warnings were understood comparing the CT and the cone beam CT images and in one case a patient's setup error was detected and corrected for the successive fractions. Conclusions: This preliminary experience suggests that the method is able to detect dosimetric errors in quasi real time at the end of the therapy session. The authors intend to extend this procedure to other pathologies with the integration of in-room imaging verification by cone beam CT.

  7. Real-Time SCADA Cyber Protection Using Compression Techniques

    SciTech Connect (OSTI)

    Lyle G. Roybal; Gordon H Rueff

    2013-11-01T23:59:59.000Z

    The Department of Energy’s Office of Electricity Delivery and Energy Reliability (DOE-OE) has a critical mission to secure the energy infrastructure from cyber attack. Through DOE-OE’s Cybersecurity for Energy Delivery Systems (CEDS) program, the Idaho National Laboratory (INL) has developed a method to detect malicious traffic on Supervisory, Control, and Data Acquisition (SCADA) network using a data compression technique. SCADA network traffic is often repetitive with only minor differences between packets. Research performed at the INL showed that SCADA network traffic has traits desirable for using compression analysis to identify abnormal network traffic. An open source implementation of a Lempel-Ziv-Welch (LZW) lossless data compression algorithm was used to compress and analyze surrogate SCADA traffic. Infected SCADA traffic was found to have statistically significant differences in compression when compared against normal SCADA traffic at the packet level. The initial analyses and results are clearly able to identify malicious network traffic from normal traffic at the packet level with a very high confidence level across multiple ports and traffic streams. Statistical differentiation between infected and normal traffic level was possible using a modified data compression technique at the 99% probability level for all data analyzed. However, the conditions tested were rather limited in scope and need to be expanded into more realistic simulations of hacking events using techniques and approaches that are better representative of a real-world attack on a SCADA system. Nonetheless, the use of compression techniques to identify malicious traffic on SCADA networks in real time appears to have significant merit for infrastructure protection.

  8. A Study of Concurrent Real-Time Garbage Collectors Filip Pizlo

    E-Print Network [OSTI]

    Rinetzky, Noam

    A Study of Concurrent Real-Time Garbage Collectors Filip Pizlo Purdue University West Lafayette at the microseconds level. Concurrent collectors also offer much better scalability over incremental collectors. The main prob- lem with concurrent real-time collectors is their complexity. The first concurrent real

  9. TIMING-ACCURATE STORAGE EMULATION: EVALUATING HYPOTHETICAL STORAGE COMPONENTS IN REAL COMPUTER SYSTEMS

    E-Print Network [OSTI]

    TIMING-ACCURATE STORAGE EMULATION: EVALUATING HYPOTHETICAL STORAGE COMPONENTS IN REAL COMPUTER;ABSTRACT Timing-accurate storage emulation offers a unique performance evaluation capability to experiment with not-yet-existing storage components in the context of real systems executing real

  10. ROAMing terrain (Real-time Optimally Adapting Meshes)

    SciTech Connect (OSTI)

    Duchaineau, M.; Wolinsky, M.; Sigeti, D.E.; Miller, M.C.; Aldrich, C.; Mineev, M.

    1997-07-01T23:59:59.000Z

    Terrain visualization is a difficult problem for applications requiring accurate images of large datasets at high frame rates, such as flight simulation and ground-based aircraft testing using synthetic sensor stimulation. On current graphics hardware, the problem is to maintain dynamic, view-dependent triangle meshes and texture maps that produce good images at the required frame rate. We present an algorithm for constructing triangle meshes that optimizes flexible view-dependent error metrics, produces guaranteed error bounds, achieves specified triangle counts directly, and uses frame-to-frame coherence to operate at high frame rates for thousands of triangles per frame. Our method, dubbed Real-time Optimally Adapting Meshes (ROAM), uses two priority queues to drive split and merge operations that maintain continuous triangulations built from pre-processed bintree triangles. We introduce two additional performance optimizations: incremental triangle stripping and priority-computation deferral lists. ROAM execution time is proportionate to the number of triangle changes per frame, which is typically a few percent of the output mesh size, hence ROAM performance is insensitive to the resolution and extent of the input terrain. Dynamic terrain and simple vertex morphing are supported.

  11. Concept Paper for Real-Time Temperature and Water Quality Management for San Joaquin River Riparian Habitat Restoration

    E-Print Network [OSTI]

    Quinn, Nigel W.T.

    2004-01-01T23:59:59.000Z

    Report. Real-time Water Quality Management for SJR RiparianReal-time Water Quality Management for SJR Riparian HabitatPaper Real-time Water Quality Management for SJR Riparian

  12. Three-point function at finite temperature in the real-time formalism

    SciTech Connect (OSTI)

    Kobes, R. (Department of Physics, University of Winnipeg, 515 Portage Avenue, Winnipeg, Manitoba (Canada))

    1991-09-09T23:59:59.000Z

    One-particle-irreducible amputated graphs differ qualitatively at finite temperature when calculated in the imaginary-time and real-time formalisms. Here we show within the real-time formalism for the three-point function that when external propagators are attached certain amputated functions can be inferred which have a close relation to those of the imaginary-time formalism.

  13. Real-time Information, Uncertainty and Quantum Feedback Control

    E-Print Network [OSTI]

    Bo Qi; Daoyi Dong; Chunlin Chen; Lijun Liu; Zairong Xi

    2014-09-10T23:59:59.000Z

    Feedback is the core concept in cybernetics and its effective use has made great success in but not limited to the fields of engineering, biology, and computer science. When feedback is used to quantum systems, two major types of feedback control protocols including coherent feedback control (CFC) and measurement-based feedback control (MFC) have been developed. In this paper, we compare the two types of quantum feedback control protocols by focusing on the real-time information used in the feedback loop and the capability in dealing with parameter uncertainty. An equivalent relationship is established between quantum CFC and non-selective quantum MFC in the form of operator-sum representation. Using several examples of quantum feedback control, we show that quantum MFC can theoretically achieve better performance than quantum CFC in stabilizing a quantum state and dealing with Hamiltonian parameter uncertainty. The results enrich understanding of the relative advantages between quantum MFC and quantum CFC, and can provide useful information in choosing suitable feedback protocols for quantum systems.

  14. Real-time multi-mode neutron multiplicity counter

    DOE Patents [OSTI]

    Rowland, Mark S; Alvarez, Raymond A

    2013-02-26T23:59:59.000Z

    Embodiments are directed to a digital data acquisition method that collects data regarding nuclear fission at high rates and performs real-time preprocessing of large volumes of data into directly useable forms for use in a system that performs non-destructive assaying of nuclear material and assemblies for mass and multiplication of special nuclear material (SNM). Pulses from a multi-detector array are fed in parallel to individual inputs that are tied to individual bits in a digital word. Data is collected by loading a word at the individual bit level in parallel, to reduce the latency associated with current shift-register systems. The word is read at regular intervals, all bits simultaneously, with no manipulation. The word is passed to a number of storage locations for subsequent processing, thereby removing the front-end problem of pulse pileup. The word is used simultaneously in several internal processing schemes that assemble the data in a number of more directly useable forms. The detector includes a multi-mode counter that executes a number of different count algorithms in parallel to determine different attributes of the count data.

  15. Real-time flavour tagging selection in ATLAS

    E-Print Network [OSTI]

    Bertella, Claudia; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    In high-energy physics experiments, online selection is crucial to identify the few interesting collisions from the large data volume processed. In the overall ATLAS trigger strategy, b-jet triggers are designed to identify heavy-flavor content in real-time and, in particular, provide the only option to efficiently record events with fully hadronic final states containing b-jets. In doing so, two different, but related, challenges are faced. The physics goal is to optimise as far as possible the rejection of light jets from QCD processes, while retaining a high efficiency on selecting jets from beauty, while maintaining affordable trigger rates without raising jet energy thresholds. This maps into a challenging computing task, as charged tracks and their corresponding vertexes must be reconstructed and analysed for each jet above the desired threshold, regardless of the increasingly harsh pile-up conditions. The performance of b-jet triggers during the LHC Run 1 data-taking campaigns is presented, together wi...

  16. Real-time algorithm for robust coincidence search

    SciTech Connect (OSTI)

    Petrovic, T.; Vencelj, M.; Lipoglavsek, M.; Gajevic, J.; Pelicon, P. [Jozef Stefan Institute, Jamova cesta 39, Ljubljana, Slovenia and Cosylab d.d., Control System Laboratory, Teslova ulica 30, Ljubljana (Slovenia); Jozef Stefan Institute, Jamova cesta 39, Ljubljana (Slovenia)

    2012-10-20T23:59:59.000Z

    In in-beam {gamma}-ray spectroscopy experiments, we often look for coincident detection events. Among every N events detected, coincidence search is naively of principal complexity O(N{sup 2}). When we limit the approximate width of the coincidence search window, the complexity can be reduced to O(N), permitting the implementation of the algorithm into real-time measurements, carried out indefinitely. We have built an algorithm to find simultaneous events between two detection channels. The algorithm was tested in an experiment where coincidences between X and {gamma} rays detected in two HPGe detectors were observed in the decay of {sup 61}Cu. Functioning of the algorithm was validated by comparing calculated experimental branching ratio for EC decay and theoretical calculation for 3 selected {gamma}-ray energies for {sup 61}Cu decay. Our research opened a question on the validity of the adopted value of total angular momentum of the 656 keV state (J{sup {pi}} = 1/2{sup -}) in {sup 61}Ni.

  17. Real time detection and correction of distribution feeder operational problems

    SciTech Connect (OSTI)

    Subramanian, A.K.; Huang, J.C.

    1995-12-31T23:59:59.000Z

    The paper presents a new technique that detects and corrects distribution operational problems using closed loop control of substation transformers, capacitors and reactors by an online computer. This allows the distribution system to be operated close to its capacity without sacrificing the quality of power supply. Such operations help defer the additional cost of installing new substations. The technique integrates the Distribution Feeder Analysis (DFA) and the Distribution Substation Control (DSC) functions to achieve this. The DFA function provides the topology and power flow results for the feeders using the substation real time measurements. It does not require feeder section measurements. The realtime feeder results are used in detecting any currently existing feeder operational problems such as feeder section voltages and currents outside their limits. The detected feeder problems are transformed into substation distribution bus objectives and then corrected by the DSC function using controls available at the substation. The DSC function has been performing successfully for several years at Potomac Electric Power Company (PEPCO) in Washington, D.C. It uses a closed loop control scheme that controls the substation transformer taps and shunt capacitor and reactor breakers and optimizes the substation operation. By combining the DFA and DSC functions into a single function and with proper transformation of feeder problems into substation objectives, a new closed loop control scheme for the substation controls is achieved. This scheme corrects the detected feeder problems and optimizes the substation operation. This technique is implemented and tested using the actual substation and feeder models of PEPCO.

  18. A Multicore Processor based Real-Time System for Automobile management application

    E-Print Network [OSTI]

    M., Vaidehi

    2010-01-01T23:59:59.000Z

    In this paper we propose an Intelligent Management System which is capable of managing the automobile functions using the rigorous real-time principles and a multicore processor in order to realize higher efficiency and safety for the vehicle. It depicts how various automobile functionalities can be fine grained and treated to fit in real time concepts. It also shows how the modern multicore processors can be of good use in organizing vast amounts of correlated functions to be executed in real-time with excellent time commitments. The modeling of the automobile tasks with real time commitments, organizing appropriate scheduling for various real time tasks and the usage of a multicore processor enables the system to realize higher efficiency and offer better safety levels to the vehicle. The industry available real time operating system is used for scheduling various tasks and jobs on the multicore processor.

  19. Near Real-time Data Analysis of Core-Collapse Supernova Simulations With Bellerophon

    SciTech Connect (OSTI)

    Lingerfelt, Eric J [ORNL] [ORNL; Messer, Bronson [ORNL] [ORNL; Desai, Sharvari S [University of Tennessee, Knoxville (UTK)] [University of Tennessee, Knoxville (UTK); Holt, Chastity A [Appalachian State University] [Appalachian State University; Lentz, Eric J [University of Tennessee, Knoxville (UTK)] [University of Tennessee, Knoxville (UTK)

    2014-01-01T23:59:59.000Z

    We present an overview of a software system, Bellerophon, built to support a production-level HPC application called CHIMERA, which simulates core-collapse supernova events at the petascale. Developed over the last four years, Bellerophon enables CHIMERA s geographically dispersed team of collaborators to perform data analysis in near real-time. Its n-tier architecture provides an encapsulated, end-to-end software solution that enables the CHIMERA team to quickly and easily access highly customizable animated and static views of results from anywhere in the world via a web-deliverable, cross-platform desktop application. In addition, Bellerophon addresses software engineering tasks for the CHIMERA team by providing an automated mechanism for performing regression testing on a variety of supercomputing platforms. Elements of the team s workflow management needs are met with software tools that dynamically generate code repository statistics, access important online resources, and monitor the current status of several supercomputing resources.

  20. Wetland Plant Guide for Assessing Habitat Impacts of Real-Time Salinity Management

    SciTech Connect (OSTI)

    Quinn, Nigel W.T.; Feldmann, Sara A.

    2004-10-15T23:59:59.000Z

    This wetland plant guide was developed to aid moist soil plant identification and to assist in the mapping of waterfowl and shorebird habitat in the Grassland Water District and surrounding wetland areas. The motivation for this habitat mapping project was a concern that real-time salinity management of wetland drainage might have long-term consequences for wildfowl habitat health--changes in wetland drawdown schedules might, over the long term, lead to increased soil salinity and other conditions unfavorable to propagation of the most desirable moist soil plants. Hence, the implementation of a program to monitor annual changes in the most common moist soil plants might serve as an index of habitat health and sustainability. Our review of the current scientific and popular literature failed to identify a good, comprehensive field guide that could be used to calibrate and verify high resolution remote sensing imagery, that we had started to use to develop maps of wetland moist soil plants in the Grassland Water District. Since completing the guide it has been used to conduct ground truthing field surveys using the California Native Plant Society methodology in 2004. Results of this survey and a previous wetland plant survey in 2003 are published in a companion LBNL publication summarizing 4 years of fieldwork to advance the science of real-time wetland salinity management.

  1. Real time intelligent process control system for thin film solar cell manufacturing

    SciTech Connect (OSTI)

    George Atanasoff

    2010-10-29T23:59:59.000Z

    This project addresses the problem of lower solar conversion efficiency and waste in the typical solar cell manufacturing process. The work from the proposed development will lead toward developing a system which should be able to increase solar panel conversion efficiency by an additional 12-15% resulting in lower cost panels, increased solar technology adoption, reduced carbon emissions and reduced dependency on foreign oil. All solar cell manufacturing processes today suffer from manufacturing inefficiencies that currently lead to lower product quality and lower conversion efficiency, increased product cost and greater material and energy consumption. This results in slower solar energy adoption and extends the time solar cells will reach grid parity with traditional energy sources. The thin film solar panel manufacturers struggle on a daily basis with the problem of thin film thickness non-uniformity and other parameters variances over the deposited substrates, which significantly degrade their manufacturing yield and quality. Optical monitoring of the thin films during the process of the film deposition is widely perceived as a necessary step towards resolving the non-uniformity and non-homogeneity problem. In order to enable the development of an optical control system for solar cell manufacturing, a new type of low cost optical sensor is needed, able to acquire local information about the panel under deposition and measure its local characteristics, including the light scattering in very close proximity to the surface of the film. This information cannot be obtained by monitoring from outside the deposition chamber (as traditional monitoring systems do) due to the significant signal attenuation and loss of its scattering component before the reflected beam reaches the detector. In addition, it would be too costly to install traditional external in-situ monitoring systems to perform any real-time monitoring over large solar panels, since it would require significant equipment refurbishing needed for installation of multiple separate ellipsometric systems, and development of customized software to control all of them simultaneously. The proposed optical monitoring system comprises AccuStrata’s fiber optics sensors installed inside the thin film deposition equipment, a hardware module of different components (beyond the scope of this project) and our software program with iterative predicting capability able to control material bandgap and surface roughness as films are deposited. Our miniature fiber optics monitoring sensors are installed inside the vacuum chamber compartments in very close proximity where the independent layers are deposited (an option patented by us in 2003). The optical monitoring system measures two of the most important parameters of the photovoltaic thin films during deposition on a moving solar panel - material bandgap and surface roughness. In this program each sensor array consists of two fiber optics sensors monitoring two independent areas of the panel under deposition. Based on the monitored parameters and their change in time and from position to position on the panel, the system is able to provide to the equipment operator immediate information about the thin films as they are deposited. This DoE Supply Chain program is considered the first step towards the development of intelligent optical control system capable of dynamically adjusting the manufacturing process “on-the-fly” in order to achieve better performance. The proposed system will improve the thin film solar cell manufacturing by improving the quality of the individual solar cells and will allow for the manufacturing of more consistent and uniform products resulting in higher solar conversion efficiency and manufacturing yield. It will have a significant impact on the multibillion-dollar thin film solar market. We estimate that the financial impact of these improvements if adopted by only 10% of the industry ($7.7 Billion) would result in about $1.5 Billion in savings by 2015 (at the assumed 20% improvement). This can b

  2. Condition Monitoring System for Reinforced

    E-Print Network [OSTI]

    Painter, Kevin

    containing dissolved ionic species such as chlorides. Since concrete is a porous material, with timeCondition Monitoring System for Reinforced Concrete Structures PROBLEM THIS TECHNOLOGY SOLVES: Patent pending concrete condition monitoring system providing `real-time' information on temperature

  3. Real-Time Active Cosmic Neutron Background Reduction Methods

    SciTech Connect (OSTI)

    Mukhopadhyay, Sanjoy; Maurer, Richard; Wolff, Ronald; Mitchell, Stephen; Guss, Paul

    2013-09-01T23:59:59.000Z

    Neutron counting using large arrays of pressurized 3He proportional counters from an aerial system or in a maritime environment suffers from the background counts from the primary cosmic neutrons and secondary neutrons caused by cosmic ray?induced mechanisms like spallation and charge-exchange reaction. This paper reports the work performed at the Remote Sensing Laboratory–Andrews (RSL-A) and results obtained when using two different methods to reduce the cosmic neutron background in real time. Both methods used shielding materials with a high concentration (up to 30% by weight) of neutron-absorbing materials, such as natural boron, to remove the low-energy neutron flux from the cosmic background as the first step of the background reduction process. Our first method was to design, prototype, and test an up-looking plastic scintillator (BC-400, manufactured by Saint Gobain Corporation) to tag the cosmic neutrons and then create a logic pulse of a fixed time duration (~120 ?s) to block the data taken by the neutron counter (pressurized 3He tubes running in a proportional counter mode). The second method examined the time correlation between the arrival of two successive neutron signals to the counting array and calculated the excess of variance (Feynman variance Y2F)1 in the neutron count distribution from Poisson distribution. The dilution of this variance from cosmic background values ideally would signal the presence of man-made neutrons.2 The first method has been technically successful in tagging the neutrons in the cosmic-ray flux and preventing them from being counted in the 3He tube array by electronic veto—field measurement work shows the efficiency of the electronic veto counter to be about 87%. The second method has successfully derived an empirical relationship between the percentile non-cosmic component in a neutron flux and the Y2F of the measured neutron count distribution. By using shielding materials alone, approximately 55% of the neutron flux from man-made sources like 252Cf or Am-Be was removed.

  4. Object-Oriented Real-Time Systems Analysis and Design Issues

    E-Print Network [OSTI]

    Fayad, Mohamed

    -time systems. The assumption was made that the analysis and design methodology was fully object-oriented (O) The fundamental issues in real-time systems (hard and soft) are the view of the processes (critical, eObject-Oriented Real-Time Systems Analysis and Design Issues Workshop Co-Chairs Mohamed E. Fayad

  5. Real-Time Demand Response with Uncertain Renewable Energy in Smart Grid

    E-Print Network [OSTI]

    Low, Steven H.

    Real-Time Demand Response with Uncertain Renewable Energy in Smart Grid Libin Jiang and Steven Low manages user load through real-time demand response and purchases balancing power on the spot market and demand response in the presence of uncertain renewable supply and time-correlated demand. The overall

  6. An integrated system for real-time Model Predictive Control of humanoid robots

    E-Print Network [OSTI]

    Todorov, Emanuel

    this goal. The automatic controller is based on real-time model-predictive control (MPC) applied to the full. The resulting composite cost is sent to the MPC machinery which constructs a new locally-optimal time- varying-based optimal control is called Model-Predictive Control (MPC), an approach that relies on real-time trajectory

  7. IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING 1 Estimating and Enhancing Real-Time Data

    E-Print Network [OSTI]

    Kang, Kyoung-Don

    in a timely manner using fresh data reflecting the current market status or target positions [2]. In e--It is essential to process real-time data service requests such as stock quotes and trade transactions in a timely manner using fresh data, which represent the current real world phenomena such as the stock market status

  8. Modeling and Analyzing Asynchronous Real-Time Systems Victor Pollex, Steffen Kollmann, Frank Slomka

    E-Print Network [OSTI]

    Ulm, Universität

    frequencies are used. For instance a combustion engine where ignition times have to be computed for each to be verified. With a simulation the system's real-time behaviour can be ob- served. Due to the rarity of corner cases a simulation can only verify the real-time requirements with a certain prob- ability. A formal

  9. Real-time sub- Å ngstrom imaging of reversible and irreversible...

    Office of Scientific and Technical Information (OSTI)

    ngstrom imaging of reversible and irreversible conformations in rhodium catalysts and graphene Citation Details Title: Real-time sub- ngstrom imaging of reversible and...

  10. acquisition enabling real-time: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    discusses the collection of complete real time data from different source systems such as SCADA, AMR, Databases and Internet which is pushed into an On Line Transaction Process...

  11. Graphene Signal Amplification for Sensitive and Real-Time Fluorescence Anisotropy Detection of Small Molecules

    E-Print Network [OSTI]

    Tan, Weihong

    Graphene Signal Amplification for Sensitive and Real-Time Fluorescence Anisotropy Detection graphene oxide (GO) as the signal amplifier. Because of the extraordinarily larger volume of GO

  12. Development and Testing of Field-Deployable Real-Time Laser-Based Non-Intrusive Detection System for Measurement of True Travel Time on the Highway

    E-Print Network [OSTI]

    2001-01-01T23:59:59.000Z

    Real-Time Laser-Based Non-Intrusive Detection System forof a laser-based non-intrusive detection system for real-Real-Time Laser-Based Non-Intrusive Detection System for

  13. Bayesian based design of real-time sensor systems for high-risk indoor contaminants

    SciTech Connect (OSTI)

    Sreedharan, Priya; Sreedharan, Priya

    2007-12-01T23:59:59.000Z

    The sudden release of toxic contaminants that reach indoor spaces can be hazardousto building occupants. To respond effectively, the contaminant release must be quicklydetected and characterized to determine unobserved parameters, such as release locationand strength. Characterizing the release requires solving an inverse problem. Designinga robust real-time sensor system that solves the inverse problem is challenging becausethe fate and transport of contaminants is complex, sensor information is limited andimperfect, and real-time estimation is computationally constrained.This dissertation uses a system-level approach, based on a Bayes Monte Carloframework, to develop sensor-system design concepts and methods. I describe threeinvestigations that explore complex relationships among sensors, network architecture,interpretation algorithms, and system performance. The investigations use data obtainedfrom tracer gas experiments conducted in a real building. The influence of individual sensor characteristics on the sensor-system performance for binary-type contaminant sensors is analyzed. Performance tradeoffs among sensor accuracy, threshold level and response time are identified; these attributes could not be inferred without a system-level analysis. For example, more accurate but slower sensors are found to outperform less accurate but faster sensors. Secondly, I investigate how the sensor-system performance can be understood in terms of contaminant transport processes and the model representation that is used to solve the inverse problem. The determination of release location and mass are shown to be related to and constrained by transport and mixing time scales. These time scales explain performance differences among different sensor networks. For example, the effect of longer sensor response times is comparably less for releases with longer mixing time scales. The third investigation explores how information fusion from heterogeneous sensors may improve the sensor-system performance and offset the need for more contaminant sensors. Physics- and algorithm-based frameworks are presented for selecting and fusing information from noncontaminant sensors. The frameworks are demonstrated with door-position sensors, which are found to be more useful in natural airflow conditions, but which cannot compensate for poor placement of contaminant sensors. The concepts and empirical findings have the potential to help in the design of sensor systems for more complex building systems. The research has broader relevance to additional environmental monitoring problems, fault detection and diagnostics, and system design.

  14. REAL-TIME OPTIMIZATION AS A GENERALIZED EQUATION 1 ...

    E-Print Network [OSTI]

    2010-06-22T23:59:59.000Z

    The resulting linear system is solved approximately by using an iterative ...... This condition gives a guideline for monitoring the progress of the ...... tration and temperature, and one control, u(?), corresponding to the cooling water flow rate.

  15. Development and application of a real time lead-in-air analyzer in controlling lead exposure at a primary lead smelter

    SciTech Connect (OSTI)

    Smith, W.J.; Dekker, D.L.; Greenwood-Smith, R.

    1986-12-01T23:59:59.000Z

    To assist in locating and quantifying fugitive emissions in a primary lead smelter, a real time lead-in-air analyzer has been developed. Dust is collected on paper tape filters and the lead analyzed by X-ray fluorescence. The unit has been used successfully to assist in the implementation of an engineering control monitoring program.

  16. Handles Revisited: Optimising Performance and Memory Costs in a Real-Time Collector

    E-Print Network [OSTI]

    Kent, University of

    Handles Revisited: Optimising Performance and Memory Costs in a Real-Time Collector Tomas Kalibera garbage collectors must update all references to ob- jects they move. Updating is a lengthy operation references have been updated which, in a real-time collector, must be done incrementally. One solution

  17. Combined Scheduling of Hard and Soft Real-Time Tasks in Multiprocessor Systems

    E-Print Network [OSTI]

    Manimaran, Govindarasu

    Combined Scheduling of Hard and Soft Real-Time Tasks in Multiprocessor Systems B. Duwairi and G to support combined scheduling of hard and soft real-time tasks in such systems, in which multiprocessors with periodic soft tasks. Scheduling any of these task combinations in multiprocessor systems is a #12

  18. Reducing WWW Latency and Bandwidth Requirements by RealTime Distillation

    E-Print Network [OSTI]

    California at Berkeley, University of

    Reducing WWW Latency and Bandwidth Requirements by Real­Time Distillation Armando Fox and Eric A Distillation and Refinement Can Help 1. The Concept of Datatype­Specific Distillation 2. Refinement 3. Trading. Optimizing for Rendering on Impoverished Devices 3. An Implemented HTTP Proxy Based on Real­Time Distillation

  19. Near Optimal Demand-Side Energy Management Under Real-time Demand-Response Pricing

    E-Print Network [OSTI]

    Boutaba, Raouf

    Near Optimal Demand-Side Energy Management Under Real-time Demand-Response Pricing Jin Xiao, Jae--In this paper, we present demand-side energy manage- ment under real-time demand-response pricing as a task, demand-response, energy management I. INTRODUCTION The growing awareness of global climate change has

  20. Precomputed Wave Simulation for Real-Time Sound Propagation of Dynamic Sources in Complex Scenes

    E-Print Network [OSTI]

    North Carolina at Chapel Hill, University of

    Precomputed Wave Simulation for Real-Time Sound Propagation of Dynamic Sources in Complex Scenes of North Carolina at Chapel Hill Abstract We present a method for real-time sound propagation that captures all wave effects, including diffraction and reverberation, for multi- ple moving sources and a moving

  1. Modeling and rendering heterogeneous fog in real-time using B-Spline wavelets

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Modeling and rendering heterogeneous fog in real-time using B-Spline wavelets Anthony Giroud method to render heterogeneous fog in real-time. The extinction function of our fog, related to its to obtain a decomposition in both space and frequency domains. A grid traversal is used to render the fog

  2. TetSplat: Real-Time Rendering and Volume Clipping of Large Unstructured Tetrahedral Meshes

    E-Print Network [OSTI]

    TetSplat: Real-Time Rendering and Volume Clipping of Large Unstructured Tetrahedral Meshes Ken-resolution data representations. These compact hierarchical data structures are then adaptively rendered and probed in real-time on a commodity PC. Our point-based rendering algorithm, which is inspired by QSplat

  3. Formal Methods for the Specification and Design of RealTime Safety Critical

    E-Print Network [OSTI]

    Ostroff, Jonathan S.

    Formal Methods for the Specification and Design of Real­Time Safety Critical Systems \\Lambda Jonathan S. Ostroff April, 1992 Abstract Safety critical computers increasingly affect nearly every aspect, designing and verifying real­time sys­ tems, so as to improve their safety and reliability. \\Lambda

  4. RealTime Robot Motion Planning Using Rasterizing Computer Graphics Hardware

    E-Print Network [OSTI]

    Richardson, David

    , Ithaca, N.Y. 14853 y Assistant Professor and Director, Computer Science Robotics Labora­ tory, DepartmentReal­Time Robot Motion Planning Using Rasterizing Computer Graphics Hardware Jed Lengyel \\Lambda Mark Reichert \\Lambda Bruce R. Donald y Donald P. Greenberg z Abstract We present a real­time robot

  5. Energy Management for Real-Time Embedded Applications with Compiler Support

    E-Print Network [OSTI]

    Melhem, Rami

    Energy Management for Real-Time Embedded Applications with Compiler Support Nevine Abou device energy has become one of the most impor- tant challenges to embedded systems designers. Processors supported by the Defense Advanced Research Projects Agency through Power Aware Real- Time Systems (PARTS

  6. Microfluidic single cell real-time PCR for comparative analysis of gene expression patterns

    E-Print Network [OSTI]

    Quake, Stephen R.

    Microfluidic single cell real-time PCR for comparative analysis of gene expression patterns collection. We present here a high-content microfluidic real-time platform as a powerful tool expression; dynamic assay; microfluidic; pluripotent INTRODUCTION Novel genomic technologies have paved

  7. Building Human-Level AI for Real-Time Strategy Games Ben G. Weber

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Building Human-Level AI for Real-Time Strategy Games Ben G. Weber Expressive Intelligence Studio UC to build robust intelligence. In particular, real- time strategy games provide a multi-scale challenge by studying a corpus of games, building models for anticipating op- ponent actions, and practicing within

  8. REAL-TIME ACTIVE PIPELINE INTEGRITY DETECTION (RAPID) SYSTEM FOR CORROSION DETECTION AND QUANTIFICATION

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    alone there are over 2 million miles of natural gas transmission and distribution pipeline providing 24REAL-TIME ACTIVE PIPELINE INTEGRITY DETECTION (RAPID) SYSTEM FOR CORROSION DETECTION detection Acellent has developed a Real-time Active Pipeline Integrity Detection (RAPID) system. The RAPID

  9. Real Time Dynamic Wind Calculation for a Pressure Driven Wind System Criss Martin

    E-Print Network [OSTI]

    Parberry, Ian

    for controllable real time dynamic wind cal- culation for a pressure driven wind system. Our method allows re to specify the positions and pressure val- ues of a high and a low pressure system to drive the wind. SetupReal Time Dynamic Wind Calculation for a Pressure Driven Wind System Criss Martin Dept. of Computer

  10. A real time neural energy management strategy for a hybrid pneumatic engine

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A real time neural energy management strategy for a hybrid pneumatic engine Guillaume Colin G.bloch@esstin.uhp-nancy.fr} Abstract: Various energy management strategies for a hybrid pneumatic engine are reviewed and a real time Recognition. Keywords: energy management strategy, fuel saving, hybrid vehicle, hybrid pneumatic engine

  11. Real-time Control of a Tokamak Plasma Using Neural Networks

    E-Print Network [OSTI]

    Bishop, Christopher M.

    Real-time Control of a Tokamak Plasma Using Neural Networks Christopher M. Bishop , Paul S. Haynes of neural networks for real-time control of the high temperature plasma in a tokamak fusion experiment. The tokamak is currently the principal experimental device for research into the magnetic confinement approach

  12. Real time search on the web: Queries, topics, and economic value Bernard J. Jansen a,

    E-Print Network [OSTI]

    Jansen, James

    examine aggregate usage of the search engine, including number of users, queries, and terms. We term interest in a topic and the polling nature of real time queries. Concerning search topics geographical affinity, pointing to a location-based aspect to real time search. In terms of economic value, we

  13. Multiprocessor Extensions to Real-Time Calculus Hennadiy Leontyev, Samarjit Chakraborty and James H. Anderson

    E-Print Network [OSTI]

    Anderson, James

    ,anderson}@cs.unc.edu Institute for Real-Time Computer Systems (RCS), TU Munich samarjit@tum.de Abstract--Many embedded platforms such platforms are of interest. In prior work, the real-time calculus framework has proven to be very effective to a large family of fixed job-priority schedulers. The utility of the proposed analysis framework

  14. GroupWeb: A WWW Browser as Real Time Groupware Saul Greenberg and Mark Roseman

    E-Print Network [OSTI]

    Greenberg, Saul

    and conferencing. Keywords Word wide web, groupware, shared visual workspaces. INTRODUCTION The World Wide Web and navigate World Wide Web pages in real time. Its groupware features include document and view slavingGroupWeb: A WWW Browser as Real Time Groupware Saul Greenberg and Mark Roseman Department

  15. Transfer Learning of Hierarchical Task-Network Planning Methods in a Real-Time Strategy Game

    E-Print Network [OSTI]

    Muñoz-Avila, Héctor

    simulations. Using simulations during the planning and learning process enables the system to get information, and simulation in a real-time strategy game engine. Introduction Learning in the context of automated planningTransfer Learning of Hierarchical Task-Network Planning Methods in a Real-Time Strategy Game

  16. Real-Time Electricity Markets Material from this introduction was adapted from [1].

    E-Print Network [OSTI]

    McCalley, James D.

    ), or balancing market. #12;2 A third market, called the operating reserve market, addresses ancillary services of products: Energy: based on resource offers and demand bids Regulating reserve: for real-time balancing1 Real-Time Electricity Markets Material from this introduction was adapted from [1

  17. Computer Graphics in Real-time Docking with Energy Calculation and Minimization

    E-Print Network [OSTI]

    Levitt, Michael

    Computer Graphics in Real-time Docking with Energy Calculation and Minimization N. Pattabiraman, M. Levitt*, T.E. Ferrin, R. Langridge Computer Graphics Laboratory, Department of Pharmaceutical Chemistry 1985 We describe a real-time docking method using molecular graphics and high-speed calculation

  18. Technique for Real-Time Measurements of Endothelial Permeability in a Microfluidic

    E-Print Network [OSTI]

    Simmons, Craig A.

    Technique for Real-Time Measurements of Endothelial Permeability in a Microfluidic Membrane Chip microfluidic platform to measure real-time perme- ability of endothelial cell monolayers on porous mem- branes of cell-free and cell-bound mem- brane layers. This technique is a highly sensitive, novel microfluidic

  19. Real-Time damage localization by means of MEMS sensors and use of wireless data transmission

    E-Print Network [OSTI]

    Shinozuka, Masanobu

    Real-Time damage localization by means of MEMS sensors and use of wireless data transmission such as water delivery networks are damaged, it is critical to pinpoint the location of the damage, to assess the extent of the damage, and to mitigate the damage in real-time. We propose a wireless sensor network

  20. Efficient Power Management of Heterogeneous Soft Real-Time Clusters Leping Wang, Ying Lu

    E-Print Network [OSTI]

    Lu, Ying

    Efficient Power Management of Heterogeneous Soft Real-Time Clusters Leping Wang, Ying Lu Department}@cse.unl.edu Abstract With growing cost of electricity, the power management of server clusters has become an important for power management of heterogeneous soft real-time clusters. It is built on simple but effective

  1. An Efficient Threshold-Based Power Management Mechanism for Heterogeneous Soft Real-Time Clusters

    E-Print Network [OSTI]

    Lu, Ying

    An Efficient Threshold-Based Power Management Mechanism for Heterogeneous Soft Real-Time Clusters {lwang, ylu}@cse.unl.edu Abstract With growing cost of electricity, the power management of server proposes an efficient algorithm for power management of heterogeneous soft real-time clusters. It is built

  2. Task Merging for Dynamic Power Management of Cyclic Applications in Real-Time Multiprocessor Systems

    E-Print Network [OSTI]

    Qiu, Qinru

    Task Merging for Dynamic Power Management of Cyclic Applications in Real-Time Multiprocessor--In this paper we propose the method of task merging and idle period clustering for dynamic power management (DPM management, low power, multiprocessor, real-time I. INTRODUCTION Multiprocessor systems, which were used only

  3. Precomputed Radiance Transfer for Real-Time Rendering in Dynamic, Low-Frequency Lighting Environments

    E-Print Network [OSTI]

    O'Brien, James F.

    Precomputed Radiance Transfer for Real-Time Rendering in Dynamic, Low-Frequency Lighting a new, real-time method for rendering diffuse and glossy objects in low-frequency lighting environments-frequency incident lighting into transferred radiance which includes global effects like shadows and interreflections

  4. 6189-47, Session 10 Optical spatial filtering velocimetry sensor for real-time

    E-Print Network [OSTI]

    6189-47, Session 10 Optical spatial filtering velocimetry sensor for real-time in-plane vibration-contact, low-cost optical sensor for real time detection and active vibration control of mechanical devices sensitivity to any translational vibration. The calibration of the sensor is independent of the optical

  5. MIRROR: A StateConscious Concurrency Control Protocol for Replicated RealTime Databases \\Lambda

    E-Print Network [OSTI]

    Stankovic, John A.

    University of Virginia Charlottesville, VA 22903 stankovic@cs.virginia.edu Abstract Data replication can help MIRROR (Managing Isolation in Replicated Real­time Object Repositories), a con­ currency control protocol Foundation Grant EIA­9900895. 1 #12; (non­real­time) database system, (b) MIRROR provides the best

  6. A Simulation Tool for Real-time Systems using Environmental Energy Harvesting Maryline CHETTO

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Simulation Tool for Real-time Systems using Environmental Energy Harvesting Maryline CHETTO, we present a simulation tool for real-time systems using environmental energy harvesting. Energy. The simulator enables to construct an optimal schedule for any task set, battery capacity and energy source

  7. NSTX-U Advances in Real-time C++11 on Linux

    SciTech Connect (OSTI)

    Erickson, Keith G

    2014-04-01T23:59:59.000Z

    Programming languages like C and Ada combined with proprietary embedded operating systems have dominated the real-time application space for decades. The new C++11standard includes native, language-level support for concurrency, a required feature for any nontrivial event-oriented real-time software. Threads, Locks, and Atomics now exist to provide the necessary tools to build the structures that make up the foundation of a complex real-time system. The National Spherical Torus Experiment Upgrade (NSTX-U) at the Princeton Plasma Physics Laboratory (PPPL) is breaking new ground with the language as applied to the needs of fusion devices. A new Digital Coil Protection System (DCPS) will serve as the main protection mechanism for the magnetic coils, and it is written entirely in C++11 running on Concurrent Computer Corporation's real-time operating system, RedHawk Linux. It runs over 600 algorithms in a 5 kHz control loop that determine whether or not to shut down operations before physical damage occurs. To accomplish this, NSTX-U engineers developed software tools that do not currently exist elsewhere, including real-time atomic synchronization, real-time containers, and a real-time logging framework. Together with a recent (and carefully configured) version of the GCC compiler, these tools enable data acquisition, processing, and output using a conventional operating system to meet a hard real-time deadline (that is, missing one periodic is a failure) of 200 microseconds.

  8. Energy-Efficient Speed Scheduling for Real-Time Tasks under Thermal Constraints

    E-Print Network [OSTI]

    Wang, Shengquan

    Energy-Efficient Speed Scheduling for Real-Time Tasks under Thermal Constraints Shengquan Wang. We develop energy-efficient speed scheduling schemes for frame-based real-time tasks under thermal- sumption with comparison to the reactive schemes in the literature. Keywords: Energy-efficient scheduling

  9. In Proceedings of TriComm '91 Delay Jitter Control for Real-Time Communication

    E-Print Network [OSTI]

    Zhang, Hui

    In Proceedings of TriComm '91 Delay Jitter Control for Real-Time Communication in a Packet study the feasibil- ity of bounding the delay jitter for real-time channels in a packet-switched store show that the scheme is capable of providing a significant reduction in delay jitter

  10. Fast three-dimensional terahertz computed tomography using real-time line projection of

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Fast three-dimensional terahertz computed tomography using real-time line projection of intense terahertz computed tomography by using real-time line projection of intense terahertz beam generated). 4. B. Ferguson, S. Wang, D. Gray, D. Abbot, and X.-C. Zhang, "T-ray computed tomography," Opt. Lett

  11. Dynamic Voltage Scaling for the Schedulability of Jitter-Constrained Real-Time Embedded Systems*

    E-Print Network [OSTI]

    Hu, Xiaobo Sharon

    Dynamic Voltage Scaling for the Schedulability of Jitter-Constrained Real-Time Embedded Systems}@ida.ing.tu-bs.de Abstract-- Jitter is a critical problem for the design of both distributed embedded systems and real-time control systems. This work considers meeting the completion jitter constraints of a set of independent

  12. In Proceedings of TriComm '91 Delay Jitter Control for RealTime Communication

    E-Print Network [OSTI]

    Zhang, Hui

    In Proceedings of TriComm '91 Delay Jitter Control for Real­Time Communication in a Packet study the feasibil­ ity of bounding the delay jitter for real­time channels in a packet­switched store show that the scheme is capable of providing a significant reduction in delay jitter

  13. Schedulability Analysis for Fixed Priority Real-Time Systems with Energy-Harvesting

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Schedulability Analysis for Fixed Priority Real-Time Systems with Energy-Harvesting Yasmina sufficient schedulability tests for fixed-priority pre-emptive scheduling of a real-time system under energy constraints. In this problem, energy is harvested from the ambient environment and used to replenish a storage

  14. Sismos l'Ecole: A Worldwide Network of Real-Time Seismometers in Schools

    E-Print Network [OSTI]

    Nolet, Guust

    Sismos à l'Ecole: A Worldwide Network of Real-Time Seismometers in Schools by F. Courboulex, J. L countries in the world. Thanks to Sismos à l'Ecole (SaE) network stations, acces- sible in real time

  15. Platform for in situ real-time measurement of protein-induced conformational changes of DNA

    E-Print Network [OSTI]

    Platform for in situ real-time measurement of protein-induced conformational changes of DNA Philipp, 2009) A platform for in situ and real-time measurement of protein- induced conformational changes in ds. The platform can accommodate individual spots of microar- rayed dsDNA on individually controlled

  16. Mixed-Criticality Multiprocessor Real-Time Systems: Energy Consumption vs Deadline Misses

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Mixed-Criticality Multiprocessor Real-Time Systems: Energy Consumption vs Deadline Misses Vincent that using the best compromise, the energy consumption can be reduced up to 17% while the percentage the energy consumption of MC systems. The energy consumption of embedded real-time systems is indeed

  17. Concept Paper for Real-Time Temperature and Water QualityManagement for San Joaquin River Riparian Habitat Restoration

    SciTech Connect (OSTI)

    Quinn, Nigel W.T.

    2004-12-20T23:59:59.000Z

    The San Joaquin River Riparian Habitat Restoration Program (SJRRP) has recognized the potential importance of real-time monitoring and management to the success of the San Joaquin River (SJR) restoration endeavor. The first step to realizing making real-time management a reality on the middle San Joaquin River between Friant Dam and the Merced River will be the installation and operation of a network of permanent telemetered gauging stations that will allow optimization of reservoir releases made specifically for fish water temperature management. Given the limited reservoir storage volume available to the SJJRP, this functionality will allow the development of an adaptive management program, similar in concept to the VAMP though with different objectives. The virtue of this approach is that as management of the middle SJR becomes more routine, additional sensors can be added to the sensor network, initially deployed, to continue to improve conditions for anadromous fish.

  18. SINGLE SILVER NANOPARTICLES AS REAL-TIME OPTICAL SENSORS WITH ZEPTOMOLE SENSITIVITY

    E-Print Network [OSTI]

    Shull, Kenneth R.

    SINGLE SILVER NANOPARTICLES AS REAL-TIME OPTICAL SENSORS WITH ZEPTOMOLE SENSITIVITY Adam D. Mc-time sensor technologies. (A) A dark-field optical image of Ag nanoparticles immobilized on a glass substrate

  19. Dynamics and real-time optimal control of satellite attitude and satellite formation systems

    E-Print Network [OSTI]

    Yan, Hui

    2006-10-30T23:59:59.000Z

    In this dissertation the solutions of the dynamics and real-time optimal control of magnetic attitude control and formation flying systems are presented. In magnetic attitude control, magnetic actuators for the time-optimal rest-to-rest maneuver...

  20. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Radiation ProtectionRaising fundsReal Property

  1. In Proceedings of RTSS'94: The 14th IEEE Real-Time System Symposium, San Juan, Puerto Rico, Dec 1994. Timeliness via Speculation for Real-Time Databases

    E-Print Network [OSTI]

    Bestavros, Azer

    . Pessimistic (PCC) protocols detect con icts as soon as they occur and resolve them using blocking. Optimistic (OCC) protocols detect con icts at transac- tion commit time and resolve them using rollbacks. For real-time databases, blockages and rollbacks are hazards that increase the likelihood of transactions missing

  2. Verification of Probabilistic Real-time Systems Marta Kwiatkowska1

    E-Print Network [OSTI]

    Oxford, University of

    widely taken up (downloaded more than 20,000 times) and used for quan- titative verification in a broad of (priced) probabilistic timed automata. These model systems exhibiting probabilistic, nondeterministic-time characteristics, through support for verification of (priced) probabilistic timed automata. PRISM already provides

  3. Staff Radiation Doses in a Real-Time Display Inside the Angiography Room

    SciTech Connect (OSTI)

    Sanchez, Roberto, E-mail: rmsanchez.hcsc@salud.madrid.org; Vano, E.; Fernandez, J. M. [Hospital Clinico San Carlos, Medical Physics Department (Spain); Gallego, J. J. [Universidad Complutense de Madrid, Radiology Department (Spain)

    2010-12-15T23:59:59.000Z

    MethodsThe evaluation of a new occupational Dose Aware System (DAS) showing staff radiation doses in real time has been carried out in several angiography rooms in our hospital. The system uses electronic solid-state detectors with high-capacity memory storage. Every second, it archives the dose and dose rate measured and is wirelessly linked to a base-station screen mounted close to the diagnostic monitors. An easy transfer of the values to a data sheet permits further analysis of the scatter dose profile measured during the procedure, compares it with patient doses, and seeks to find the most effective actions to reduce operator exposure to radiation.ResultsThe cumulative occupational doses measured per procedure (shoulder-over lead apron) ranged from 0.6 to 350 {mu}Sv when the ceiling-suspended screen was used, and DSA (Digital Subtraction Acquisition) runs were acquired while the personnel left the angiography room. When the suspended screen was not used and radiologists remained inside the angiography room during DSA acquisitions, the dose rates registered at the operator's position reached up to 1-5 mSv/h during fluoroscopy and 12-235 mSv/h during DSA acquisitions. In such case, the cumulative scatter dose could be more than 3 mSv per procedure.ConclusionReal-time display of doses to staff members warns interventionists whenever the scatter dose rates are too high or the radiation protection tools are not being properly used, providing an opportunity to improve personal protection accordingly.

  4. Real-time hadron properties at finite temperature from a Euclidean lattice

    SciTech Connect (OSTI)

    Huang, S. (Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States))

    1993-01-15T23:59:59.000Z

    From a dispersion relation point of view a two-point function in either real time or imaginary time is governed by the same spectral function at finite temperature. This fact can be exploited to extract real-time information from a finite Euclidean lattice. To illustrate the idea, the Gross-Neveu model in the large-[ital N] limit is solved both in the Minkowski continuum at finite temperature and on a finite temporal Euclidean lattice. The temperature dependences of the real-time bound-state properties and the screening masses are calculated. The relevance of this approach to the realistic QCD simulations is also briefly discussed.

  5. Real Time Tailpipe Emission Measurements | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of ContaminationHubs+18, 2012 Qualified11Department of Energy ReaffirmingReal

  6. Dynamic RealTime Task Scheduling on Hypercubes 1

    E-Print Network [OSTI]

    Mohapatra, Prasant

    ­ Available Time Window (ATW). By using ATW, the system utilization can be improved and thereby the deadlines

  7. Improved Boiler System Operation with Real-time Chemical Control 

    E-Print Network [OSTI]

    Bloom, D.; Jenkins, B.

    2010-01-01T23:59:59.000Z

    and increased energy costs. Next, the boiler scale inhibitor feed and control was switched to the new boiler controller. The controller uses an inert tracer which directly correlates to the amount of inhibitor in the sample monitored. This guarantees... to improve average levels of inhibitor by 30%. See Table 2. The new automation control achieved an average of 3.99 ppm with a target of 4.0 ppm. Even during variable steam loads the boiler controller maintained the consistency of the inhibitor...

  8. Real-Time Systems, 24, 153169, 2003 # 2003 Kluwer Academic Publishers. Manufactured in The Netherlands.

    E-Print Network [OSTI]

    Liu, Xue

    , University of Illinois at Urbana-Champaign Abstract. Many real-time systems, such as manufacturing plants, have long life cycles. To enable the realization of technological innovations and to mitigate the risk and cost of bringing new control technologies into functioning systems, ¯exible and reliable real

  9. QoS Measurement of Internet Real-Time Multimedia Services Wenyu Jiang, Henning Schulzrinne

    E-Print Network [OSTI]

    Yang, Junfeng

    QoS Measurement of Internet Real-Time Multimedia Services Wenyu Jiang, Henning Schulzrinne fwenyu,schulzrinneg@cs.columbia.edu Technical Report CUCS-015-99 Department of Computer Science Columbia University December 1999 Abstract Real the modeling and analysis of delay and loss. Our goal is to establish feasible metrics that can reliably

  10. EcoMobile: Energy-aware Real-time Framework for Multicore Mobile Systems1

    E-Print Network [OSTI]

    Cheng, Albert M. K.

    EcoMobile: Energy-aware Real-time Framework for Multicore Mobile Systems1 B. Liu, Y. Wen, F. Liu, Y://www.cs.uh.edu Technical Report Number UH-CS-11-09 October 23, 2011 Keywords: mobile system, energy-aware, real plan to build an energy-aware framework for multicore mobile systems which extends Android with two

  11. An off-line multiprocessor real-time scheduling algorithm to reduce static energy consumption

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    An off-line multiprocessor real-time scheduling algorithm to reduce static energy consumption, France laurent.pautet@telecom-paristech.fr Abstract--Energy consumption of highly reliable real dynamic energy consumption. This paper aims to propose a new off-line schedul- ing algorithm to put

  12. Real-Time Virus Trapping and Fluorescent Imaging in Microfluidic

    E-Print Network [OSTI]

    Bashir, Rashid

    particles; however, this method requires the samples to be dried, fixed, coated, and laboriously prepared time, the images were collected with a computer running a video image capture

  13. Real-Time Combustion Torque Estimation on a Diesel Engine Test Bench Using Time-Varying Kalman Filtering

    E-Print Network [OSTI]

    Real-Time Combustion Torque Estimation on a Diesel Engine Test Bench Using Time-Varying Kalman sensor the easily available instantaneous crankshaft angle speed. The observer consists in a Kalman torque observer, we use a physics-based model underlying the role of time-varying inertia. A Kalman

  14. How Much Energy Have Real Fields Time and Space in Multifractal Universe?

    E-Print Network [OSTI]

    L. Ya. Kobelev

    2000-11-16T23:59:59.000Z

    On the base of multifractal theory of time and space (see \\cite{kob1}-\\cite{kob16}) in this paper shown presence in every space and time volumes of real space and time fields a huge supply of energy . In the multifractal Universe every space volume or time interval possesses by huge amount of energy($\\sim10^{60}cm^{3}$) and we discuss the problem is it possible this new for mankind sorts of energy to extract. Contents: 1. Introduction 2. What are Energy Densities of Real Space and Time Fields in Multifractal Universe? 3. How Much Energy Space and Time Continually Lose?

  15. MIDWEST ISO CO-OPTIMIZATION BASED REAL-TIME DISPATCH AND PRICING OF ENERGY AND ANCILLARY SERVICES

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    day-ahead counterpart, real-time locational marginal prices (LMP) are calculated every fiveMIDWEST ISO CO-OPTIMIZATION BASED REAL-TIME DISPATCH AND PRICING OF ENERGY AND ANCILLARY SERVICES-time dispatch and pricing. The RT SCED formulation at the core of the real-time dispatch and pricing market

  16. Design and Implementation of Real-Time Off-Grid Detection Tool Based on FNET/GridEye

    SciTech Connect (OSTI)

    Guo, Jiahui [University of Tennessee, Knoxville (UTK); Zhang, Ye [University of Tennessee, Knoxville (UTK); Liu, Yilu [University of Tennessee (UTK) and Oak Ridge National Laboratory (ORNL); Young II, Marcus Aaron [ORNL; Irminger, Philip [ORNL; Dimitrovski, Aleksandar D [ORNL; Willging, Patrick [U.S. Department of Energy

    2014-01-01T23:59:59.000Z

    Real-time situational awareness tools are of critical importance to power system operators, especially during emergencies. The availability of electric power has become a linchpin of most post disaster response efforts as it is the primary dependency for public and private sector services, as well as individuals. Knowledge of the scope and extent of facilities impacted, as well as the duration of their dependence on backup power, enables emergency response officials to plan for contingencies and provide better overall response. Based on real-time data acquired by Frequency Disturbance Recorders (FDRs) deployed in the North American power grid, a real-time detection method is proposed. This method monitors critical electrical loads and detects the transition of these loads from an on-grid state, where the loads are fed by the power grid to an off-grid state, where the loads are fed by an Uninterrupted Power Supply (UPS) or a backup generation system. The details of the proposed detection algorithm are presented, and some case studies and off-grid detection scenarios are also provided to verify the effectiveness and robustness. Meanwhile, the algorithm has already been implemented based on the Grid Solutions Framework (GSF) and has effectively detected several off-grid situations.

  17. Landfill cover performance monitoring using time domain reflectometry

    SciTech Connect (OSTI)

    Neher, E.R.; Cotten, G.B. [Parsons Infrastructure & Technology Group, Inc., Idaho Falls, ID (United States); McElroy, D. [Lockheed-Martin Idaho Technologies Company, Idaho Falls, ID (United States)

    1998-03-01T23:59:59.000Z

    Time domain reflectometry (TDR) systems were installed to monitor soil moisture in two newly constructed landfill covers at the Idaho National Engineering and Environmental Laboratory. Each TDR system includes four vertical arrays with each array consisting of four TDR probes located at depths of 15, 30, 45, and 60 cm. The deepest probes at 60 cm were installed beneath a compacted soil layer to analyze infiltration through the compacted layer. Based on the TDR data, infiltration through the two covers between March and October, 1997 ranged from less than measurable to 1.5 cm. However, due to a prohibition on penetrating the buried waste and resulting limits on probe placement depths, deeper percolation was not evaluated. Some of the advantages found in the application of TDR for infiltration monitoring at this site are the relative low cost and rugged nature of the equipment. Also, of particular importance, the ability to collect frequent moisture measurements allows the capture and evaluation of soil moisture changes resulting from episodic precipitation events. Disadvantages include the inability to install the probes into the waste, difficulties in interpretation of infiltration during freeze/thaw periods, and some excessive noise in the data.

  18. Energy-Efficient Duplex and TMR Real-Time Systems Appeared in the IEEE Real-Time Systems Symposium, Dec 2002

    E-Print Network [OSTI]

    Melhem, Rami

    for autonomous critical missions need such degrees of re- liability, but energy consumption becomes a dominant the energy used by reliable computers onboard autonomous vehicles. The conservation allows these systems of electrical power for operation and cooling. Examples where energy consumption and real time are of paramount

  19. Energy efficient scheduling techniques for real-time embedded systems 

    E-Print Network [OSTI]

    Prathipati, Rajesh Babu

    2004-09-30T23:59:59.000Z

    Battery-powered portable embedded systems have been widely used in many applications. These embedded systems have to concurrently perform a multitude of complex tasks under stringent time constraints. As these systems ...

  20. Paramyxovirus fusion: Real-time measurement of parainfluenza virus 5 virus-cell fusion

    SciTech Connect (OSTI)

    Connolly, Sarah A. [Howard Hughes Medical Institute, Northwestern University, Evanston, IL 60208-3500 (United States); Lamb, Robert A. [Howard Hughes Medical Institute, Northwestern University, Evanston, IL 60208-3500 (United States) and Department of Biochemistry, Molecular Biology, and Cell Biology, Northwestern University, Evanston, IL 60208-3500 (United States)]. E-mail: ralamb@northwestern.edu

    2006-11-25T23:59:59.000Z

    Although cell-cell fusion assays are useful surrogate methods for studying virus fusion, differences between cell-cell and virus-cell fusion exist. To examine paramyxovirus fusion in real time, we labeled viruses with fluorescent lipid probes and monitored virus-cell fusion by fluorimetry. Two parainfluenza virus 5 (PIV5) isolates (W3A and SER) and PIV5 containing mutations within the fusion protein (F) were studied. Fusion was specific and temperature-dependent. Compared to many low pH-dependent viruses, the kinetics of PIV5 fusion was slow, approaching completion within several minutes. As predicted from cell-cell fusion assays, virus containing an F protein with an extended cytoplasmic tail (rSV5 F551) had reduced fusion compared to wild-type virus (W3A). In contrast, virus-cell fusion for SER occurred at near wild-type levels, despite the fact that this isolate exhibits a severely reduced cell-cell fusion phenotype. These results support the notion that virus-cell and cell-cell fusion have significant differences.

  1. The U-tube sampling methodology and real-time analysis of geofluids

    SciTech Connect (OSTI)

    Freifeld, Barry; Perkins, Ernie; Underschultz, James; Boreham, Chris

    2009-03-01T23:59:59.000Z

    The U-tube geochemical sampling methodology, an extension of the porous cup technique proposed by Wood [1973], provides minimally contaminated aliquots of multiphase fluids from deep reservoirs and allows for accurate determination of dissolved gas composition. The initial deployment of the U-tube during the Frio Brine Pilot CO{sub 2} storage experiment, Liberty County, Texas, obtained representative samples of brine and supercritical CO{sub 2} from a depth of 1.5 km. A quadrupole mass spectrometer provided real-time analysis of dissolved gas composition. Since the initial demonstration, the U-tube has been deployed for (1) sampling of fluids down gradient of the proposed Yucca Mountain High-Level Waste Repository, Armagosa Valley, Nevada (2) acquiring fluid samples beneath permafrost in Nunuvut Territory, Canada, and (3) at a CO{sub 2} storage demonstration project within a depleted gas reservoir, Otway Basin, Victoria, Australia. The addition of in-line high-pressure pH and EC sensors allows for continuous monitoring of fluid during sample collection. Difficulties have arisen during U-tube sampling, such as blockage of sample lines from naturally occurring waxes or from freezing conditions; however, workarounds such as solvent flushing or heating have been used to address these problems. The U-tube methodology has proven to be robust, and with careful consideration of the constraints and limitations, can provide high quality geochemical samples.

  2. atom-resolved real-time studies: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    are collected in human-avatar promising results about the role and functioning of joint attention in human-avatar interactions. Keywords Yu, Chen 7 REVIEW ARTICLE Real-time...

  3. Closed-loop Real-time Control of a Novel Linear Magnetostrictive Actuator

    E-Print Network [OSTI]

    Chen, Chien-Fan

    2010-10-12T23:59:59.000Z

    This thesis presents the design of various closed-loop real-time control of a novel linear magnetostrictive actuator. The novel linear magnetostrictive actuator which uses Terfenol-D as the magnetostrictive material was developed by Sadighi...

  4. Real-time detection of ambient aerosols using photothermal interferometry: Folded Jamin interferometer

    E-Print Network [OSTI]

    Real-time detection of ambient aerosols using photothermal interferometry: Folded Jamin of instrumentation that can directly measure ambient aerosol absorption through photothermal interferometry. The hallmark of this approach is its ability to directly measure aerosol absorption without interference from

  5. CPS : Small : Dynamically Managing the Real-time Fabric of a Wireless Sensor-Actuator Network

    E-Print Network [OSTI]

    Lemmon, Michael

    CPS : Small : Dynamically Managing the Real-time Fabric of a Wireless Sensor-Actuator Network 1 as a multi-player game between applications (users) that is essentially a network utility maximization (NUM

  6. A power line impedance spectrum analyzer using real-time digital signal processing

    E-Print Network [OSTI]

    Margolis, Michael G

    1993-01-01T23:59:59.000Z

    Power distribution system impedance as seen by power converters and other non-linear loads is important for the determination of harmonic current injection and propagation caused by these loads. This thesis presents a real-time power line impedance...

  7. Real-time implementation of a vision based automatic push button 

    E-Print Network [OSTI]

    Rajkotwala, Farida

    1996-01-01T23:59:59.000Z

    This thesis presents a real-time digital signal Processing (DSP) system to detect the presence of pedestrians waiting to cross an intersection. Such a system would improve both pedestrian and vehicle flow considering that ...

  8. Imaging the Brain in Real-Time with PET-Enabled "Helmet Cam"

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Imaging the Brain in Real-Time with a PET-Enabled "Helmet-Cam" Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens...

  9. Towards RealTime ObjectZ Graeme Smith \\Lambda and Ian Hayes y\\Lambda

    E-Print Network [OSTI]

    Smith, Graeme

    Towards Real­Time Object­Z Graeme Smith \\Lambda and Ian Hayes y\\Lambda \\Lambda Software of areas including multiprocessing [22], telecommunications [19], multi­media standards [10

  10. Geek-Up[09.03.10] -- Innovative Silicon Wafers, Real-Time Power...

    Broader source: Energy.gov (indexed) [DOE]

    difference. We buy power to decrease the system load or sell to increase it. Or, the hydro operator can increase or decrease generation at the dams." Learn how BPA's real-time...

  11. Real-time programming and the big ideas of computational literacy

    E-Print Network [OSTI]

    Hancock, Christopher Michael, 1961-

    2003-01-01T23:59:59.000Z

    Though notoriously difficult, real-time programming offers children a rich new set of applications, and the opportunity to engage bodily knowledge and experience more centrally in intellectual enterprises. Moreover, the ...

  12. A smartphone interface for a wireless EEG headset with real-time 3D reconstruction

    E-Print Network [OSTI]

    and 3D reconstruction. Introduction Functional brain imaging techniques including fMRI and PET provide gestures (see Fig. 1). Evaluation A major concern in mobile real-time systems is the power consumption

  13. Development of Real-time Closed-loop Control Algorithms for Grid-scale Battery

    E-Print Network [OSTI]

    i Development of Real-time Closed-loop Control Algorithms for Grid-scale Battery Energy Storage Systems Prepared for the U.S. Department of Energy Office of Electricity Delivery and Energy ................................................................................................. 23 6.2. Data Storage

  14. Real-Time Motion Planning With Applications to Autonomous Urban Driving

    E-Print Network [OSTI]

    Kuwata, Yoshiaki

    This paper describes a real-time motion planning algorithm, based on the rapidly-exploring random tree (RRT) approach, applicable to autonomous vehicles operating in an urban environment. Extensions to the standard RRT are ...

  15. Energy-optimal schedules of real-time jobs with hard deadlines

    E-Print Network [OSTI]

    George, John Vijoe

    2005-11-01T23:59:59.000Z

    In this thesis, we develop algorithms that make optimal use of frequency scaling to schedule jobs with real??time requirements. Dynamic voltage scaling is a technique used to reduce energy consumption in wide variety of systems. Reducing supply...

  16. Towards Real-Time and Memory Efficient Predictions of Valve States in Diesel Engines

    E-Print Network [OSTI]

    Zell, Andreas

    Towards Real-Time and Memory Efficient Predictions of Valve States in Diesel Engines Philippe Komma T¨ubingen, Germany {philippe.komma, andreas.zell}@uni-tuebingen.de system for a diesel engine

  17. Successful Real Time Pricing (RTP) Tieline Control Must Do More Than Save Money

    E-Print Network [OSTI]

    Robinson, J.

    2008-01-01T23:59:59.000Z

    Industrial cogeneration facilities are finding electrical procurement contracts with Real Time Pricing (RTP) clauses attractive. By accepting a portion of the variable energy cost risk, the industrial can reduce the average cost of electricity...

  18. Parallel and real-time implementation of an acoustic echo canceller using oversampled wavelet frame algorithms

    E-Print Network [OSTI]

    Tam, Pak-Yin

    1995-01-01T23:59:59.000Z

    This thesis describes a novel echo cancellation system that eliminates nonstationary echoes with long acoustic delays in real-time. By combining subband adaptive filtering and active system identification based on fast wavelet transform...

  19. An SDRAM Controller for Real-Time Systems Edgar Lakis, Martin Schoeberl

    E-Print Network [OSTI]

    Schoeberl, Martin

    An SDRAM Controller for Real-Time Systems Edgar Lakis, Martin Schoeberl Department of Applied Mathematics and Computer Science Technical University of Denmark Email: edgar.lakis@gmail.com, masca

  20. A dynamic slack management technique for real-time distributed embedded systems

    E-Print Network [OSTI]

    Acharya, Subrata

    2006-04-12T23:59:59.000Z

    This work presents a novel slack management technique, the Service Rate Based Slack Distribution Technique, for dynamic real-time distributed embedded systems targeting the reduction and management of energy consumption. Energy minimization...

  1. Real-time impluse-based rigid body simulation and rendering

    E-Print Network [OSTI]

    Yuksel, Can

    2007-09-17T23:59:59.000Z

    The purpose of this thesis is to develop and demonstrate a physically based rigid body simulation with a focus on simplifications to achieve real-time performance. This thesis aims to demonstrate that by improving the efficiency with simplified...

  2. Development of a Wireless Real-Time Productivity Measurement System for Rapid Construction Operations

    E-Print Network [OSTI]

    Kim, Seonghoon

    2008-01-01T23:59:59.000Z

    was developed. The WRITE System has a potential to strengthen communication and coordination among participants involved in the infrastructure construction process by providing more accurate productivity information in real time....

  3. Real-time trajectory optimization and air traffic control simulation for noise abatement approach procedures

    E-Print Network [OSTI]

    Zou, Feng, 1977-

    2004-01-01T23:59:59.000Z

    Aircraft noise is a major obstacle to the growth of aviation. This thesis presents an adaptive onboard real-time optimization algorithm and an Air Traffic Control simulation model that can minimize the aircraft approach ...

  4. Extending RISMC Capabilities for Real-Time Diagnostics and Prognostics

    SciTech Connect (OSTI)

    curtis smith; Mandelli, Diego

    2014-11-01T23:59:59.000Z

    Quick and effective accident management is essential in any industry in order to limit and contain possible threats to both people and environment/assets. This is in particular relevant in the nuclear industry where accidents may have major impacts from an economic, health and societal point of view. As an example, the Fukushima Dai-ichi nuclear power plant accident highlighted the importance of the ability of plant operators and plant staff to react quickly and effectively in accident conditions. This particular event showed the importance of being able to: • Determine/estimate the actual status of the plant (i.e., diagnosis) when the monitoring system is corrupted or partially unavailable, and, • Forecast its future evolution (i.e., prognosis). In this paper we want to describe a research direction geared toward the development of a new set of advanced diagnosis and prognosis tools. We employ innovative data mining and machine learning techniques that are able to infer plant status and mimic the plant’s full temporal behavior in order to assist the reactor operators during an accident scenario.

  5. Real-time combustion controls and diagnostics sensors (CCADS)

    DOE Patents [OSTI]

    Thornton, Jimmy D. (Morgantown, WV); Richards, George A. (Morgantown, WV); Dodrill, Keith A. (Fairmont, WV); Nutter, Jr., Roy S. (Morgantown, WV); Straub, Douglas (Morgantown, WV)

    2005-05-03T23:59:59.000Z

    The present invention is directed to an apparatus for the monitoring of the combustion process within a combustion system. The apparatus comprises; a combustion system, a means for supplying fuel and an oxidizer, a device for igniting the fuel and oxidizer in order to initiate combustion, and a sensor for determining the current conducted by the combustion process. The combustion system comprises a fuel nozzle and an outer shell attached to the combustion nozzle. The outer shell defines a combustion chamber. Preferably the nozzle is a lean premix fuel nozzle (LPN). Fuel and an oxidizer are provided to the fuel nozzle at separate rates. The fuel and oxidizer are ignited. A sensor positioned within the combustion system comprising at least two electrodes in spaced-apart relationship from one another. At least a portion of the combustion process or flame is between the first and second electrodes. A voltage is applied between the first and second electrodes and the magnitude of resulting current between the first and second electrodes is determined.

  6. Flow Control of Real Time Multimedia Applications Using Model Predictive Control with a Feed Forward Term

    E-Print Network [OSTI]

    Duong, Thien Chi

    2011-02-22T23:59:59.000Z

    FLOW CONTROL OF REAL TIME MULTIMEDIA APPLICATIONS USING MODEL PREDICTIVE CONTROL WITH A FEED FORWARD TERM A Thesis by THIEN CHI DUONG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 2010 Major Subject: Mechanical Engineering Flow Control of Real Time Multimedia Applications Using Model Predictive Control with Feed Forward Term...

  7. Real-time processing of remote sensor data as applied to Arctic ice classification

    E-Print Network [OSTI]

    Permenter, James Austin

    1973-01-01T23:59:59.000Z

    REAL-TIME PROCESSING OF REMOTE SENSOR DATA AS APPLIED TO ARCTIC ICE CLASSIFICATION A Thesis by JAMES AUSTIN PERMENTER partial ! Submitted to the Graduate College of Texas A)M University in fulfillment of the requirement for the degree... of MASTER OF SCIENCE December 1973 Major Subject: Electrical Engineering REAL-TIME PROCESSING OF REMOTE SENSOR DATA AS APPLIED TO ARCTIC ICE CLASSIFICATION A Thesis by James Austin Permenter Approved as to style and content by: ] ( rman of Commi...

  8. Distributed connection management for real-time communication over wormhole-routed networks

    E-Print Network [OSTI]

    Sundaresan, Sharad

    1997-01-01T23:59:59.000Z

    DISTRIBUTED CONNECTION MANAGEMENT FOR REAL- TIME COMMUNICATION OVER WORMHOLE-ROUTED NETWORKS A Thesis by SHARAD SUNDARESAN Submitted to the Office of Graduate Studies of Texas ASM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 1997 Major Subject: Computer Science DISTRIBUTED CONNECTION MANAGEMENT FOR REAL-TIME COMMUNICATION OVER WORMHOLE-ROUTED NETWORKS A Thesis by SHARAD SUNDARESAN Submitted to Texas AkM University in partial...

  9. A multiprocessor system for real-time simulation of power electronic circuits

    E-Print Network [OSTI]

    Qawasmi, Nabil Hussein

    1988-01-01T23:59:59.000Z

    that describes it [7]. Its applications are widely distributed among many areas of technology such as process controls, aerospace, and other engineering oriented system design and analysis problems. Real-time simulation is a much favored simulation method...A MULTIPROCESSOR SYSTEM FOR REAL-TIME SIMULATION OF POWER ELECTRONIC CIRCUITS A Thesis by NABIL HUSSEIN QAWASMI Submitted to the Graduate College of Texas AkM University in partial fulfillment of the requirement for the degree of MASTER...

  10. A comparison of Lagrangian inertia coefficients for robot manipulator dynamics to examine real-time applicability

    E-Print Network [OSTI]

    Roston, Gerald Paul

    1985-01-01T23:59:59.000Z

    A COMPARISON OF LAGRANGIAN INERTIA COEFFICIENTS FOR ROBOT MANIPULATOR DYNAMICS TO EXAMINE REAL-TIME APPLICABILITY A Thesis by GERALD PAUL ROSTON Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE August 1985 Major Subject: Mechanical Engineering A COMPARISON OF LAGRANGIAN INERTIA COEFFICIENTS FOR ROBOT MANIPULATOR DYiNAMICS TO EXAMINE REAL-TIME APPLICABILITY A Thesis by GERALD PAUL ROSTON...

  11. A high-resolution, four-band SAR testbed with real-time image formation

    SciTech Connect (OSTI)

    Walker, B.; Sander, G.; Thompson, M.; Burns, B.; Fellerhoff, R.; Dubbert, D.

    1996-03-01T23:59:59.000Z

    This paper describes the Twin-Otter SAR Testbed developed at Sandia National Laboratories. This SAR is a flexible, adaptable testbed capable of operation on four frequency bands: Ka, Ku, X, and VHF/UHF bands. The SAR features real-time image formation at fine resolution in spotlight and stripmap modes. High-quality images are formed in real time using the overlapped subaperture (OSA) image-formation and phase gradient autofocus (PGA) algorithms.

  12. Real-Time Pricing- A Flexible Alternative for Electrical Power Supply

    E-Print Network [OSTI]

    Reynolds, S. D.; Frye, A. O. Jr.

    REAL-TIME PRICING - A FLEXIBLE ALTERNATIVE ..OR ELECTRICAL POWER SUPPLY S. D. REYNOLDS Manager of Industrial Marketing & Services Tennessee Valley Authority Chattanooga, Tennessee ABSTRACT In an increasingly competitive operating... conditions to more tl,an 240 mills per kilo,~atthollr 78 REAL-TIME PRICING A FLEXIBLE ALTERNATIVE rOR ELECTRICAL POWER SUPPLY S. D. REYNOLDS Manager of Industrial Marketing & Services Tennessee Valley Authority Chattanooga, Tennessee ABSTRACT...

  13. Real time MR Coronary Angiography at 3T P. K. Nguyen1

    E-Print Network [OSTI]

    Southern California, University of

    Real time MR Coronary Angiography at 3T P. K. Nguyen1 , K. Nayak2,3 , C. Cunningham3 , J. M. Santos3 , M. Tsukiji1 , J. Brittain4 , M. V. McConnell1 , D. Nishimura3 , B. Hu3 , J. Pauly3 , P. Yang1 1 Park, CA, United States Introduction. Real time MR eliminates the need for cardiac-gating or breath

  14. HP Steam Trap Monitoring

    E-Print Network [OSTI]

    Pascone, S.

    2011-01-01T23:59:59.000Z

    STEAM MONITORING HP Steam Trap Monitoring HP Steam Trap Monitoring ? 12-18 months payback! ? 3-5% permanent reduction in consumption ? LEED Pt.? Innovation in Operations EB O&M ? Saved clients over $1,000,000 Annual consumption... Steam Trap Monitoring ? Real-time monitoring for high-pressure critical traps (>15 PSIG) ? Average total system cost $25K - $50K ? Web-Based or Modbus/BMS Integration Basic Installation Wireless Signal Transmitter Receiver Repeater...

  15. Detecting internal corrosion of natural gas transmission pipelines: field tests of probes and systems for real-time corrosion measurement

    SciTech Connect (OSTI)

    Covino, Bernard S., Jr.; Bullard, Sophie J.; Cramer, Stephen D.; Holcomb, Gordon R.; Ziomek-Moroz, M.; Kane, R.D. (InterCorr International); Meidinger, B. (Rocky Mountain Oilfield Testing Center)

    2005-01-01T23:59:59.000Z

    A field study was conducted to evaluate the use of automated, multi-technique electrochemical corrosion-rate monitoring devices and probes for detecting corrosion in environments similar to those found in natural gas transmission pipelines. It involved measurement of real-time corrosion signals from operating pipelines. Results and interpretation were reported from four different field test locations. Standard flush-mount and custom flange probes were used in four different environments at a gas-gathering site and one environment but two different probe orientations at a natural gas site. These sites were selected to represent normal and upset conditions common in gas transmission pipelines. The environments consisted of two different levels of humidified natural gas, liquid hydrocarbon, and water from natural gas. Probe locations included the 6 and 12 o?clock positions of a natural gas pipeline carrying 2-phase gas/liquid flow. The probe data was monitored using completely remote solar powered systems that provided real-time data transmission via wireless back to a pipeline control station. Data are also presented comparing the ECR probe data to that for coupons used to determine corrosion rate and to detect the presence of microbiologically influenced corrosion (MIC).

  16. Integrating Real Time and Power Management in a Real System Martin P. Lawitzky

    E-Print Network [OSTI]

    § Stefan M. Petters§ NICTA Sydney, Australia § University of New South Wales Sydney, Australia ¶ TU M. This enables the use of the dynamic slack caused by the variability of execution time, to reduce energy and other thermal dissipation devices, a limited power supply (e.g. a solar powered system), or simply

  17. Real Time Control Design for Mobile Robot Fault Tolerant Control.

    E-Print Network [OSTI]

    Kuehnlenz, Kolja

    Mobile Robot. Cristian Axenie Automation and Industrial Informatics Department Razvan Solea, Lecturer, Ph-time distributed control application with fault tolerance capabilities for differential wheeled mobile robots mobile robot the author has been able to develop a hierarchical software application that minimizes costs

  18. Differentiated RealTime Data Services for ECommerce Applications \\Lambda

    E-Print Network [OSTI]

    Stankovic, John A.

    services are poor at processing user requests in a timely manner using fresh data. To address this problem data, e.g., current stock prices, to high level aggregated data, e.g., recommended selling of stock prices and perform different operations based on the current market status. Furthermore

  19. Procedure Speci cations in 10.1 Real Time Theorems

    E-Print Network [OSTI]

    Ladkin, Peter B.

    (MDA) and Touch Down Zone Elevation (TDZE) which are important during the landing phase. Predicates-Time Speci#12;cations module Landing Defs DECLARATIONS constants DH ; MDA;TDZE variables alt DEFINITIONS below DH #1; = (alt MDA #1; = (alt MDA) at MDA #1; = (alt = MDA) landing ) (alt = TDZE

  20. A Real Time Expert Control System for Helicopter Autorotation

    E-Print Network [OSTI]

    Sunberg, Zachary Nolan

    2013-04-22T23:59:59.000Z

    steady-state descent and uses an estimate of the time to impact to safely flare and land the helicopter in the vast majority of flight conditions. The control law is validated using a full 6-degree-of-freedom simulation of both a full-size attack...

  1. Real-Time Selective Harmonic Minimization in Cascaded Multilevel Inverters

    E-Print Network [OSTI]

    Tolbert, Leon M.

    time but the output fundamental voltage will stay constant and the harmonic will still meet capability of generalizing solutions. What this means is that, if the correct range of data are used sources along with its operation as in a solar panel. This means that during a day of operation, the solar

  2. A Field-Deployable Real-Time Laser-Based Non-Intrusive Detection System for Measurement of True Travel Time on the Highway

    E-Print Network [OSTI]

    Cheng, Harry H.; Shaw, Ben; Palen, Joe; Wang, Zhaoqing; Chen, Bo

    2002-01-01T23:59:59.000Z

    Real-Time Laser-Based Non-Intrusive Detection System forJoe Palen, "A Laser-Based Non-Intrusive Detection System forReal-Time Laser-Based Non-Intrusive Detection System for

  3. Optimizing a combined WCET-WCEC problem in instruction fetching for real-time systems

    E-Print Network [OSTI]

    Zaragoza, Universidad de

    in systems with severe power-supply limitations. In this paper we study several memory architectures using that methodologies testing such optimizations at design time could be very helpful to provide a precise system set-up combined time and energy optimization models for real-time multitasking systems. Each task is modeled using

  4. Kalman Filter Methods for Real-time Frequency and Mode Number Estimation of MHD Activity in Tokamak Plasmas

    E-Print Network [OSTI]

    Kalman Filter Methods for Real-time Frequency and Mode Number Estimation of MHD Activity in Tokamak Plasmas

  5. Real-Time Magnetic Field Pitch Angle Estimation with a Motional Stark Effect Diagnostic Using Kalman Filtering

    E-Print Network [OSTI]

    Real-Time Magnetic Field Pitch Angle Estimation with a Motional Stark Effect Diagnostic Using Kalman Filtering

  6. New Signal Processing Methods and Information Technologies for the Real Time Control of JET Reactor Relevant Plasmas

    E-Print Network [OSTI]

    New Signal Processing Methods and Information Technologies for the Real Time Control of JET Reactor Relevant Plasmas

  7. Design and Implementation of a Real-time Spray Cooling Control System for Continuous Casting of Thin Steel Slabs

    E-Print Network [OSTI]

    Thomas, Brian G.

    @uiuc.edu Key words: Continuous casting, Secondary spray cooling, Real-time control, Heat Transfer Model

  8. Towards Real-Time High Performance Computing For Power Grid Analysis

    SciTech Connect (OSTI)

    Hui, Peter SY; Lee, Barry; Chikkagoudar, Satish

    2012-11-16T23:59:59.000Z

    Real-time computing has traditionally been considered largely in the context of single-processor and embedded systems, and indeed, the terms real-time computing, embedded systems, and control systems are often mentioned in closely related contexts. However, real-time computing in the context of multinode systems, specifically high-performance, cluster-computing systems, remains relatively unexplored. Imposing real-time constraints on a parallel (cluster) computing environment introduces a variety of challenges with respect to the formal verification of the system's timing properties. In this paper, we give a motivating example to demonstrate the need for such a system--- an application to estimate the electromechanical states of the power grid--- and we introduce a formal method for performing verification of certain temporal properties within a system of parallel processes. We describe our work towards a full real-time implementation of the target application--- namely, our progress towards extracting a key mathematical kernel from the application, the formal process by which we analyze the intricate timing behavior of the processes on the cluster, as well as timing measurements taken on our test cluster to demonstrate use of these concepts.

  9. The BEST scheduler for integrated processing of best-e ort and soft real-time processes

    E-Print Network [OSTI]

    Miller, Ethan L.

    operating systems do not directly support the scheduling needs of soft real-time multimedia applications that it is possible to robustly execute soft real-time applications on best-e#11;ort systems. In particular, we estimates. Like most soft real-time systems, the DQM system has several issues that limit its ultimate

  10. Earthquake early warning system using real-time signal processing

    SciTech Connect (OSTI)

    Leach, R.R. Jr.; Dowla, F.U.

    1996-02-01T23:59:59.000Z

    An earthquake warning system has been developed to provide a time series profile from which vital parameters such as the time until strong shaking begins, the intensity of the shaking, and the duration of the shaking, can be derived. Interaction of different types of ground motion and changes in the elastic properties of geological media throughout the propagation path result in a highly nonlinear function. We use neural networks to model these nonlinearities and develop learning techniques for the analysis of temporal precursors occurring in the emerging earthquake seismic signal. The warning system is designed to analyze the first-arrival from the three components of an earthquake signal and instantaneously provide a profile of impending ground motion, in as little as 0.3 sec after first ground motion is felt at the sensors. For each new data sample, at a rate of 25 samples per second, the complete profile of the earthquake is updated. The profile consists of a magnitude-related estimate as well as an estimate of the envelope of the complete earthquake signal. The envelope provides estimates of damage parameters, such as time until peak ground acceleration (PGA) and duration. The neural network based system is trained using seismogram data from more than 400 earthquakes recorded in southern California. The system has been implemented in hardware using silicon accelerometers and a standard microprocessor. The proposed warning units can be used for site-specific applications, distributed networks, or to enhance existing distributed networks. By producing accurate, and informative warnings, the system has the potential to significantly minimize the hazards of catastrophic ground motion. Detailed system design and performance issues, including error measurement in a simple warning scenario are discussed in detail.

  11. Towards Real Time Optimal Auto-tuning of PID Controllers

    E-Print Network [OSTI]

    Hill, Aaron Jamison

    2013-08-22T23:59:59.000Z

    )) The degree of the polynomial P (s) DSP Digital Signal Processor card(X) The cardinality of the set X kp The proportional gain value of a PID controller ki The integral gain value of a PID controller kd The derivative gain value of a PID controller Kp... The interval of kp values Ki The interval of ki values Kd The interval of kd values ?x? The L2 vector norm of x ?A? The matrix norm of A ?F,G? The inner product of F and G OLHP The open left half plane ORHP The open right half plane LTI Linear Time Invariant vi...

  12. Real-time communication in FDDI-based networks

    E-Print Network [OSTI]

    Kumar, Amit Virendra

    1995-01-01T23:59:59.000Z

    . The MAC protocol is also responsible for ring initialization and recovery. It does this using the claim and beacon processes respectively. II. A. 4. 1 The Timed- Token Protocol The MAC protocol operates by passing a token from station to station around... the M bit if the frame does not fit into one RB, and puts the frame length in the used length field. Receive Buffer Pointer (32 bits) Usable Length Used Used M Length M Length Receive Descriptor Next-RBD Pointer Fig. 5. Receive Buffer Descriptor...

  13. Capacitor placement and real time control in large-scale unbalanced distribution systems: Numerical studies

    SciTech Connect (OSTI)

    Wang, J.C.; Chiang, H.D.; Miu, K.N. [Cornell Univ., Ithaca, NY (United States). School of Electrical Engineering; Darling, G. [NYSEG Corp., Binghamton, NY (United States). Distribution System Dept.

    1997-04-01T23:59:59.000Z

    A novel solution algorithm for capacitor placement and real-time control in real large-scale unbalanced distribution systems is evaluated and implemented to determine the number, locations, sizes, types and control schemes of capacitors to be placed on large-scale unbalanced distribution systems. A detailed numerical study regarding the solution algorithm in large scale unbalanced distribution systems is undertaken. Promising numerical results on both 292 bus and 394 bus real unbalanced distribution systems containing unbalanced loads and phasing and various types of transformers are presented. The computational performance for the capacitor control problem under load variations is encouraging.

  14. Digital Holography for in Situ Real-Time Measurement of Plasma-Facing-Component Erosion

    SciTech Connect (OSTI)

    ThomasJr., C. E. [Third Dimension Technologies, LLC, Knoxville, TN; Granstedt, E. M. [Tri-Alpha Energy] [Tri-Alpha Energy; Biewer, Theodore M [ORNL] [ORNL; Baylor, Larry R [ORNL] [ORNL; Combs, Stephen Kirk [ORNL] [ORNL; Meitner, Steven J [ORNL] [ORNL; Hillis, Donald Lee [ORNL] [ORNL; Majeski, R. [Princeton Plasma Physics Laboratory (PPPL)] [Princeton Plasma Physics Laboratory (PPPL); Kaita, R. [Princeton Plasma Physics Laboratory (PPPL)] [Princeton Plasma Physics Laboratory (PPPL)

    2014-01-01T23:59:59.000Z

    In situ, real time measurement of net plasma-facing-component (PFC) erosion/deposition in a real plasma device is challenging due to the need for good spatial and temporal resolution, sufficient sensitivity, and immunity to fringe-jump errors. Design of a high-sensitivity, potentially high-speed, dual-wavelength CO2 laser digital holography system (nominally immune to fringe jumps) for PFC erosion measurement is discussed.

  15. Proceedings First International Workshop on Rewriting Techniques for Real-Time Systems

    E-Print Network [OSTI]

    Ölveczky, Peter Csaba

    2010-01-01T23:59:59.000Z

    This volume contains the proceedings of the First International Workshop on Rewriting Techniques for Real-Time Systems (RTRTS 2010), held in Longyearbyen, Spitsbergen, on April 6-9, 2010. The aim of the workshop is to bring together researchers with an interest in the use of rewriting-based techniques (including rewriting logic) and tools for the modeling, analysis, and/or implementation of real-time and hybrid systems, and to give them the opportunity to present their recent works, discuss future research directions, and exchange ideas. The topics of the workshop comprise, but are not limited to: methods and tools supporting rewriting-based modeling and analysis of real-time and hybrid systems, and extensions of such systems; use of rewriting techniques to provide rigorous support for model-based software engineering of timed systems; applications and case studies; and comparison with other formalisms and tools.

  16. Real-time capable first principle based modelling of tokamak turbulent transport

    E-Print Network [OSTI]

    Breton, S; Felici, F; Imbeaux, F; Aniel, T; Artaud, J F; Baiocchi, B; Bourdelle, C; Camenen, Y; Garcia, J

    2015-01-01T23:59:59.000Z

    A real-time capable core turbulence tokamak transport model is developed. This model is constructed from the regularized nonlinear regression of quasilinear gyrokinetic transport code output. The regression is performed with a multilayer perceptron neural network. The transport code input for the neural network training set consists of five dimensions, and is limited to adiabatic electrons. The neural network model successfully reproduces transport fluxes predicted by the original quasilinear model, while gaining five orders of magnitude in computation time. The model is implemented in a real-time capable tokamak simulator, and simulates a 300s ITER discharge in 10s. This proof-of-principle for regression based transport models anticipates a significant widening of input space dimensionality and physics realism for future training sets. This aims to provide unprecedented computational speed coupled with first-principle based physics for real-time control and integrated modelling applications.

  17. ENVIRONMENTAL MONITORING OF LEAKS USING TIME LAPSED LONG ELECTRODE ELECTRICAL RESISTIVITY

    SciTech Connect (OSTI)

    MYERS DA; RUCKER DF; FINK JB; LOKE MH

    2009-12-16T23:59:59.000Z

    Highly industrialized areas pose challenges for surface electrical resistivity characterization due to metallic infrastructure. The infrastructure is typically more conductive than the desired targets and will mask the deeper subsurface information. These challenges may be minimized if steel-cased wells are used as long electrodes in the area near the target. We demonstrate a method of using long electrodes to electrically monitor a simulated leak from an underground storage tank with both synthetic examples and a field demonstration. The synthetic examples place a simple target of varying electrical properties beneath a very low resistivity layer. The layer is meant to replicate the effects of infrastructure. Both surface and long electrodes are tested on the synthetic domain. The leak demonstration for the field experiment is simulated by injecting a high conductivity fluid in a perforated well within the S tank farm at Hanford, and the resistivity measurements are made before and after the leak test. All data are processed in four dimensions, where a regularization procedure is applied in both the time and space domains. The synthetic test case shows that the long electrode ERM could detect relative changes in resistivity that are commensurate with the differing target properties. The surface electrodes, on the other hand, had a more difficult time matching the original target's footprint. The field results shows a lowered resistivity feature develop south of the injection site after cessation of the injections. The time lapsed regularization parameter has a strong influence on the differences in inverted resistivity between the pre and post injection datasets, but the interpretation of the target is consistent across all values of the parameter. The long electrode ERM method may provide a tool for near real-time monitoring of leaking underground storage tanks.

  18. Real-time Scheduling of periodic tasks in a monoprocessor system with rechargeable energy storage

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Real-time Scheduling of periodic tasks in a monoprocessor system with rechargeable energy storage-time computing system that is powered through a renewable energy storage device. In this context, two constraints for the properties of the energy source, capacity of the energy storage as well as energy consumption of the tasks

  19. FLUORESCENCE AND FIBER-OPTICS BASED REAL-TIME THICKNESS SENSOR FOR DYNAMIC LIQUID FILMS

    E-Print Network [OSTI]

    Narain, Amitabh

    /analyzed the incident reflected waves to identify and measure the total transit time of the sound wave (of known wave-speed1 FLUORESCENCE AND FIBER-OPTICS BASED REAL-TIME THICKNESS SENSOR FOR DYNAMIC LIQUID FILMS T. W. Ng/disadvantages of many known liquid film thickness sensing devices (viz. conductivity probes, reflectance based fiber

  20. Fault Resilient Real-Time Design for NoC Architectures Christopher Zimmer, Frank Mueller

    E-Print Network [OSTI]

    Mueller, Frank

    @cs.ncsu.edu Abstract--Performance and time to market requirements cause many real-time designers to consider components-end handheld market and are also seeing increased use in the lower-end embedded control market. An example is the Freescale 8-core PowerPC P4080 that is being marketed in the power utility domain for control devices

  1. A Fault Observant Real-Time Embedded Design for Network-on-Chip Control Systems

    E-Print Network [OSTI]

    Mueller, Frank

    @cs.ncsu.edu ABSTRACT Performance and time to market requirements cause many real- time designers to consider components. Multi-core COTS processors are becoming increas- ingly used in the high-end handheld market and are also seeing in- creased use in the lower-end embedded control market. An exam- ple is the Freescale 8-core

  2. Real-time processing of a long perimeter fiber optic intrusion system 

    E-Print Network [OSTI]

    Snider, William Timothy

    2009-09-30T23:59:59.000Z

    This thesis reports on recent advances made in real-time intruder detection for an intrusion system developed at Texas A&M University that utilizes a phase-sensitive optical time-domain reflectometer. The system uses light pulses from a highly...

  3. Validation of the new real-time equilibrium code EQUINOX on JET and Tore Supra

    E-Print Network [OSTI]

    Faugeras, Blaise

    Validation of the new real-time equilibrium code EQUINOX on JET and Tore Supra D. Mazon1 , P. Lotte Nice Sophia-Antipolis, CNRS Parc Valrose 06108 Nice Cedex 02 France 3 Consorzio RFX ­ Associazione time equilibrium reconstruction code EQUINOX, which solves the Grad Shafranov equation, has been

  4. Using Real-Time Three-Dimensional Ultrasound to Characterize Mitral Valve Motion

    E-Print Network [OSTI]

    Ayache, Nicholas

    Using Real-Time Three-Dimensional Ultrasound to Characterize Mitral Valve Motion Paul M. Novotnya results aim to fully characterize the four-dimensional (3D + time) movement of the mitral valve for better understanding of its behavior prior to surgical interventions, such as mitral valve repair. A behavior model

  5. Energy Saving Measures of Heating Network - Computerized Real-time Control System

    E-Print Network [OSTI]

    Zhang, J.

    2006-01-01T23:59:59.000Z

    a new system control theory, that is computerize the real-time frequency conversion control or area,time, mode of heat transformation and temperature grads. The aim of the new theory is promoting the efficiency of energy conversion and minimizing...

  6. Real-Time Character Animation for Computer Games Eike F Anderson

    E-Print Network [OSTI]

    Davies, Christopher

    three-dimensional game characters which are real-time animated inside the virtual environment-time character animation. 2 RELATED WORK Both, memory and processing power, are expensive. More realism in games, by recursively traversing the hierarchic data structure starting from the root, passing down the transformation

  7. Effect of real-time electricity pricing on renewable generators and system emissions

    E-Print Network [OSTI]

    Connolly, Jeremiah P. (Jeremiah Peter)

    2008-01-01T23:59:59.000Z

    Real-time retail pricing (RTP) of electricity, in which the retail price is allowed to vary with very little time delay in response to changes in the marginal cost of generation, offers expected short-run and long-run ...

  8. R3TOS: A Reliable Reconfigurable Real-Time Operating System Xabier Iturbe1,2

    E-Print Network [OSTI]

    Arslan, Tughrul

    R3TOS: A Reliable Reconfigurable Real-Time Operating System Xabier Iturbe1,2 , Khaled Benkrid1-Time Operating System (R3TOS) are presented. The main objective of R3TOS is to create an infrastruc- ture faults in the underlying chip's silicon at runtime (true fault re- moval from system). R3TOS is aimed

  9. Real-Time Frame-Dependent Watermarking in MPEG-2 Video

    E-Print Network [OSTI]

    Chen, Sheng-Wei

    Real-Time Frame-Dependent Watermarking in MPEG-2 Video Chun-Shien Lu ?, Jan-Ru Chen y, and Kuo data. In particular, video watermarking deals with several issues that are unique to various types-time detection, bit-rate control, and resistance to watermark estimation attacks, will be addressed. Since video

  10. System-Wide Energy Minimization for Real-Time Tasks: Lower Bound and Approximation

    E-Print Network [OSTI]

    Xu, Cheng-Zhong

    - time solutions by exploiting its inherent properties. 1. INTRODUCTION Power management is importantSystem-Wide Energy Minimization for Real-Time Tasks: Lower Bound and Approximation Xiliang Zhong and Cheng-Zhong Xu Department of Electrical and Computer Engineering Wayne State University, Detroit

  11. A Component-Based Approach for Constructing High-confidence Distributed Real-time and

    E-Print Network [OSTI]

    Tuceryan, Mihran

    the entire software life-cycle. 1 Introduction As the complexity of Distributed Real-Time Embedded (DRE development cost, but also facilitate high-confidence DRE system construction using different formalisms over implementations of the same functional component with different run-time features (e.g., battery consumption

  12. A Component-Based Approach for Constructing High-Confidence Distributed Real-Time and

    E-Print Network [OSTI]

    Gray, Jeffrey G.

    the entire software life-cycle. 1 Introduction As the complexity of Distributed Real-Time Embedded (DRE development cost, but also facilitate high-confidence DRE system construction using different formalisms over with different run-time features (e.g., battery consumption versus throughput). Addition- ally, two components

  13. RINSE: the Real-time Immersive Network Simulation Environment for Network Security Exercises (Extended Version)

    E-Print Network [OSTI]

    Liu, Xiaowen "Jason"

    RINSE: the Real-time Immersive Network Simulation Environment for Network Security Exercises-time Immer- sive Network Simulation Environment for network security exercises (RINSE) to meet this need to support large-scale network security preparedness and training ex- ercises, involving hundreds of players

  14. Contrasting real-time dynamics with screening phenomena at finite temperature

    SciTech Connect (OSTI)

    Huang, S.; Lissia, M. [Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 0219] [Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 0219; [Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States); [Istituto Nazionale di Fisica Nucleare, via Ada Negri 18, I-09127 Cagliari (Italy); [Dipartimento di Fisica dell`Universita di Cagliari, I-09124 Cagliari (Italy)

    1996-06-01T23:59:59.000Z

    We discuss the interpretation of Euclidean correlation functions at finite temperature ({ital T}) and their relationship with the corresponding real-time Green{close_quote}s functions. The soluble (2+1)-dimensional Gross-Neveu model in the large-{ital N} limit is used throughout as a working example. First, the real-time bound state, identified as an elementary excitation at finite {ital T}, is solved. The bound state mass, the dispersion relation at low momenta, the coupling constant, and decay constant are calculated. To characterize the structure of the bound state the on-shell form factor is carefully introduced and calculated. Then we examine the corresponding screening state and contrast the screening mass, coupling constant, decay constant, and the screening Bethe-Salpeter amplitude with the real-time quantities. We find that, although they can be used as qualitative indicators in the low-{ital T} regime, the screening states at finite {ital T} in general do not reflect the properties of the corresponding real-time bound states. In addition, other relevant issues, such as the subtlety of the real-time manifestation of conservation laws due to some internal symmetries at {ital T}{ne}0, the temperature dependence of the pseudoscalar spectral function and its sum rule, and the high-{ital T} limit of the screening state and its implications to the dimensional reduction, are also discussed in detail. {copyright} {ital 1996 The American Physical Society.}

  15. DEVELOPING IMPROVED TRAVEL TIME RELIABILITY MEASURES FOR REAL-TIME AND ARCHIVED ITS DATA

    E-Print Network [OSTI]

    Bertini, Robert L.

    including travel time, 95th percentile travel time, travel time index, buffer index planning time index-based detector data, collected in periodic special studies, or estimated using simulation [1,3]: 95th Percentile between 95th percentile travel time and mean travel time, divided by mean travel time. Planning Time Index

  16. Diverse Soft Real-Time Processing in an Integrated System Caixue Lin, Tim Kaldewey, Anna Povzner, and Scott A. Brandt

    E-Print Network [OSTI]

    Brandt, Scott A.

    Diverse Soft Real-Time Processing in an Integrated System Caixue Lin, Tim Kaldewey, Anna Povzner,kalt,apovzner,scott}@cs.ucsc.edu Abstract The simple notion of soft real-time processing has frac- tured into a spectrum of diverse soft developed for each of these types, but these are essentially point solutions in the space of soft real

  17. OUTPUT-ONLY STATISTICAL TIME SERIES METHODS FOR STRUCTURAL HEALTH MONITORING: A COMPARATIVE STUDY

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    OUTPUT-ONLY STATISTICAL TIME SERIES METHODS FOR STRUCTURAL HEALTH MONITORING: A COMPARATIVE STUDY-STSMs) for Structural Health Monitoring (SHM) is presented via damage de- tection and identification in a GARTEUR type for Structural Health Monitoring (SHM). Their use is of high importance for structures such as bridges, aircraft

  18. A Comprehensive Statistically-Based Method to Interpret Real-Time Flowing Measurements

    SciTech Connect (OSTI)

    Pinan Dawkrajai; Keita Yoshioka; Analis A. Romero; Ding Zhu; A.D. Hill; Larry W. Lake

    2005-10-01T23:59:59.000Z

    This project is motivated by the increasing use of distributed temperature sensors for real-time monitoring of complex wells (horizontal, multilateral and multi-branching wells) to infer the profiles of oil, gas, and water entry. Measured information can be used to interpret flow profiles along the wellbore including junction and build section. In this second project year, we have completed a forward model to predict temperature and pressure profiles in complex wells. As a comprehensive temperature model, we have developed an analytical reservoir flow model which takes into account Joule-Thomson effects in the near well vicinity and multiphase non-isothermal producing wellbore model, and couples those models accounting mass and heat transfer between them. For further inferences such as water coning or gas evaporation, we will need a numerical non-isothermal reservoir simulator, and unlike existing (thermal recovery, geothermal) simulators, it should capture subtle temperature change occurring in a normal production. We will show the results from the analytical coupled model (analytical reservoir solution coupled with numerical multi-segment well model) to infer the anomalous temperature or pressure profiles under various conditions, and the preliminary results from the numerical coupled reservoir model which solves full matrix including wellbore grids. We applied Ramey's model to the build section and used an enthalpy balance to infer the temperature profile at the junction. The multilateral wellbore temperature model was applied to a wide range of cases varying fluid thermal properties, absolute values of temperature and pressure, geothermal gradients, flow rates from each lateral, and the trajectories of each build section.

  19. Real-time x-ray studies of gallium nitride nanodot formation by droplet heteroepitaxy

    SciTech Connect (OSTI)

    Wang Yiyi; Oezcan, Ahmet S.; Sanborn, Christopher; Ludwig, Karl F.; Bhattacharyya, Anirban; Chandrasekaran, Ramya; Moustakas, Theodore D.; Zhou Lin; Smith, David J. [Physics Department, Boston University, Boston, Massachusetts 02215 (United States); Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215 (United States); Department of Physics, Arizona State University, Tempe, Arizona 85287, USA and School of Materials, Arizona State University, Tempe, Arizona 85287 (United States)

    2007-10-01T23:59:59.000Z

    Self-organized gallium nitride nanodots have been fabricated using droplet heteroepitaxy on c-plane sapphire by plasma-assisted molecular beam epitaxy at different substrate temperatures and Ga fluxes. Nanoscale Ga droplets were initially formed on the sapphire substrate at high temperatures by Ga deposition from an effusion cell in an ultrahigh vacuum growth chamber. Subsequently, the droplets were converted into GaN nanodots using a nitrogen plasma source. The process was monitored and controlled using real-time grazing-incidence small-angle x-ray scattering. The samples were examined postgrowth by in situ grazing incidence x-ray diffraction and reflection high-energy electron diffraction, which confirmed the epitaxial relationship between the GaN nanodots and the sapphire surface. X-ray diffraction indicated that the wurtzite phase was dominant at higher substrate temperature (710 deg. C), but a mixture of wurtzite and zinc blende phases was present at a substrate temperature of 620 deg. C. Ex situ atomic force microscopy and transmission electron microscopy analyses showed that the dot size distribution was bimodal. A thin GaN continuous layer of {approx} three monolayers thick was observed by transmission electron microscopy on the sample grown at a substrate temperature of 620 deg. C, but no such layer was observed for the substrate temperature of 710 deg. C. This suggests that there is little mobility of Ga atoms in contact with the sapphire substrate at the lower temperature so that they cannot easily diffuse to nearby droplets and instead form a thin layer covering the surface.

  20. Real-Time X-ray Studies of Gallium Nitride Nanodot Formation by Droplet Heteroepitaxy

    SciTech Connect (OSTI)

    Wang,Y.; Ozcan, A.; Sanborn, C.; Ludwig, K.; Bhattacharyya, A.; Chandrasekaran, R.; Moustakas, T.; Zhou, L.; Smith, D.

    2007-01-01T23:59:59.000Z

    Self-organized gallium nitride nanodots have been fabricated using droplet heteroepitaxy on c-plane sapphire by plasma-assisted molecular beam epitaxy at different substrate temperatures and Ga fluxes. Nanoscale Ga droplets were initially formed on the sapphire substrate at high temperatures by Ga deposition from an effusion cell in an ultrahigh vacuum growth chamber. Subsequently, the droplets were converted into GaN nanodots using a nitrogen plasma source. The process was monitored and controlled using real-time grazing-incidence small-angle x-ray scattering. The samples were examined postgrowth by in situ grazing incidence x-ray diffraction and reflection high-energy electron diffraction, which confirmed the epitaxial relationship between the GaN nanodots and the sapphire surface. X-ray diffraction indicated that the wurtzite phase was dominant at higher substrate temperature (710? C), but a mixture of wurtzite and zinc blende phases was present at a substrate temperature of 620? C. Ex situ atomic force microscopy and transmission electron microscopy analyses showed that the dot size distribution was bimodal. A thin GaN continuous layer of ? three monolayers thick was observed by transmission electron microscopy on the sample grown at a substrate temperature of 620? C, but no such layer was observed for the substrate temperature of 710? C. This suggests that there is little mobility of Ga atoms in contact with the sapphire substrate at the lower temperature so that they cannot easily diffuse to nearby droplets and instead form a thin layer covering the surface.

  1. Real Time Pricing as a Default or Optional Service for C&I Customers: A Comparative Analysis of Eight Case Studies

    E-Print Network [OSTI]

    Barbose, Galen; Goldman, Charles; Bharvirkar, Ranjit; Hopper, Nicole; Ting, Michael; Neenan, Bernie

    2005-01-01T23:59:59.000Z

    Load Response Program – Real Time Option is a unique examplePJM Economic LRP – Real Time Option, PJM Emergency LRPPJM Economic LRP – Real Time Option PowerShare – QuoteOption

  2. Excitons in the One-Dimensional Hubbard Model: A Real-Time Study K. A. Al-Hassanieh,1

    E-Print Network [OSTI]

    Tennessee, University of

    ) We study the real-time dynamics of a hole and doubly occupied site pair, namely, a holon in a bound state. Our study also provides insight on the holon-doublon propagation in real space. Because

  3. Radiofrequency Ablation of Non-Small-Cell Carcinoma of the Lung Under Real-Time FDG PET CT Guidance

    SciTech Connect (OSTI)

    Schoellnast, Helmut; Larson, Steven M. [Memorial Sloan-Kettering Cancer Center, Department of Radiology (United States); Nehmeh, Sadek A. [Memorial Sloan-Kettering Cancer Center, Department of Medical Physics (United States); Carrasquillo, Jorge A.; Thornton, Raymond H.; Solomon, Stephen B., E-mail: solomons@mskcc.org [Memorial Sloan-Kettering Cancer Center, Department of Radiology (United States)

    2011-02-15T23:59:59.000Z

    Radiofrequency ablation (RFA) is a well-established method in treatment of patients with lung carcinomas who are not candidates for surgical resection. Usually computed tomographic (CT) guidance is used for the procedure, thus enabling needle placement and permitting evaluation of complications such as pneumothorax and bleeding. {sup 18}F-fluorodeoxyglucose (FDG) positron emission tomography (PET) is generally used for tumor activity assessment and is therefore useful in follow-up after tumor treatment. A method that provides real-time image-based monitoring of RFA to ensure complete tumor ablation would be a valuable tool. In this report, we describe the behavior of preinjected FDG during PET CT-guided RFA of a non-small-cell lung carcinoma and discuss the value of FDG as a tool to provide intraprocedure monitor ablation. The size and the form of the activity changed during ablation. Ablation led to increase of the size and blurring and irregularity of the contour compared to pretreatment imaging. The maximal standardized uptake value decreased only slightly during the procedure. Therefore, before RFA, FDG PET can guide initial needle placement, but it does not serve as a monitoring tool to evaluate residual viable tissue during the procedure.

  4. Developing Embedded/Real-Time and Cyber-Physical Systems: Functional Reactive Programming, RTL-based Formal Verification, Response Time

    E-Print Network [OSTI]

    Cheng, Albert M. K.

    of such systems. In battery-operated real-time systems such as sensors in a CPS, conserving energy is of critical between battery recharges or energy-harvesting. This tutorial covers the following topics: (1 in Computer Science, graduating Phi Beta Kappa at age 19, the M.S. in Computer Science with a minor

  5. PONDER - A Real time software backend for pulsar and IPS observations at the Ooty Radio Telescope

    E-Print Network [OSTI]

    Naidu, Arun; Manoharan, P K; Krishnakumar, M A

    2015-01-01T23:59:59.000Z

    This paper describes a new real-time versatile backend, the Pulsar Ooty Radio Telescope New Digital Efficient Receiver (PONDER), which has been designed to operate along with the legacy analog system of the Ooty Radio Telescope (ORT). PONDER makes use of the current state of the art computing hardware, a Graphical Processing Unit (GPU) and sufficiently large disk storage to support high time resolution real-time data of pulsar observations, obtained by coherent dedispersion over a bandpass of 16 MHz. Four different modes for pulsar observations are implemented in PONDER to provide standard reduced data products, such as time-stamped integrated profiles and dedispersed time series, allowing faster avenues to scientific results for a variety of pulsar studies. Additionally, PONDER also supports general modes of interplanetary scintillation (IPS) measurements and very long baseline interferometry data recording. The IPS mode yields a single polarisation correlated time series of solar wind scintillation over a b...

  6. Model for Correlating Real-Time Survey Results to Contaminant Concentrations - 12183

    SciTech Connect (OSTI)

    Walker, Stuart A. [U.S. Environmental Protection Agency, Washington, DC. 20460 (United States)

    2012-07-01T23:59:59.000Z

    The U.S. Environmental Protection Agency (EPA) Superfund program is developing a new Counts Per Minute (CPM) calculator to correlate real-time survey results, which are often expressed as counts per minute, to contaminant concentrations that are more typically provided in risk assessments or for cleanup levels, usually expressed in pCi/g or pCi/m{sup 2}. Currently there is no EPA guidance for Superfund sites on correlating count per minute field survey readings back to risk, dose, or other ARAR based concentrations. The CPM calculator is a web-based model that estimates a gamma detector response for a given level of contamination. The intent of the CPM calculator is to facilitate more real-time measurements within a Superfund response framework. The draft of the CPM calculator is still undergoing internal EPA review. This will be followed by external peer review. It is expected that the CPM calculator will at least be in peer review by the time of WM2012 and possibly finalized at that time. The CPM calculator should facilitate greater use of real-time measurement at Superfund sites. The CPM calculator may also standardize the process of converting lab data to real time measurements. It will thus lessen the amount of lab sampling that is needed for site characterization and confirmation surveys, but it will not remove the need for sampling. (authors)

  7. A TMS320C30 based real time data acquisition system

    E-Print Network [OSTI]

    Shahrier, Sharif Mohammad

    1992-01-01T23:59:59.000Z

    A TMS320C30 BASED REAL TIME DATA ACQIJISITION SYSTEM A Thesis by SHARIF MOHAMMAD SHAHRIER Submitted to the Office of Graduate Studies of Texa, s A & M Hniversity in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... August 1992 Major Subject: Electrical Engineering A TMS320C30 BASED REAL TIME DATA ACQUISITION SYSTEM A Thesis by SHARIF MOHAMMAD SHAHRIER Approved as to style and content by: B. Don Russell (Chair of Co ittee) 1 Bar G. ouglass ember) z-r . es...

  8. A distributed hard real-time Java system for high mobility components

    E-Print Network [OSTI]

    Rho, Sangig

    2005-02-17T23:59:59.000Z

    -defined services either to a client program (which can in turn be a component) or to other components. Besides their well-defined ser- vice interface, components are opaque: They do not make internal implementation details available to their environment. Component... for the exported services: The components keep the information of real-time properties for the exported ser- vices rather than inheriting those from clients in the component declared real-time property model. As a result, clients cannot affect how the workload...

  9. Real-time, single-step bioassay using nanoplasmonic resonator with ultra-high sensitivity

    DOE Patents [OSTI]

    Zhang, Xiang; Ellman, Jonathan A; Chen, Fanqing Frank; Su, Kai-Hang; Wei, Qi-Huo; Sun, Cheng

    2014-04-01T23:59:59.000Z

    A nanoplasmonic resonator (NPR) comprising a metallic nanodisk with alternating shielding layer(s), having a tagged biomolecule conjugated or tethered to the surface of the nanoplasmonic resonator for highly sensitive measurement of enzymatic activity. NPRs enhance Raman signals in a highly reproducible manner, enabling fast detection of protease and enzyme activity, such as Prostate Specific Antigen (paPSA), in real-time, at picomolar sensitivity levels. Experiments on extracellular fluid (ECF) from paPSA-positive cells demonstrate specific detection in a complex bio-fluid background in real-time single-step detection in very small sample volumes.

  10. Advanced Kalman Filter for Real-Time Responsiveness in Complex Systems

    SciTech Connect (OSTI)

    Welch, Gregory Francis [UNC-Chapel Hill/University of Central Florida] [UNC-Chapel Hill/University of Central Florida; Zhang, Jinghe [UNC-Chapel Hill/Virginia Tech] [UNC-Chapel Hill/Virginia Tech

    2014-06-10T23:59:59.000Z

    Complex engineering systems pose fundamental challenges in real-time operations and control because they are highly dynamic systems consisting of a large number of elements with severe nonlinearities and discontinuities. Today’s tools for real-time complex system operations are mostly based on steady state models, unable to capture the dynamic nature and too slow to prevent system failures. We developed advanced Kalman filtering techniques and the formulation of dynamic state estimation using Kalman filtering techniques to capture complex system dynamics in aiding real-time operations and control. In this work, we looked at complex system issues including severe nonlinearity of system equations, discontinuities caused by system controls and network switches, sparse measurements in space and time, and real-time requirements of power grid operations. We sought to bridge the disciplinary boundaries between Computer Science and Power Systems Engineering, by introducing methods that leverage both existing and new techniques. While our methods were developed in the context of electrical power systems, they should generalize to other large-scale scientific and engineering applications.

  11. Real-time dynamics of open quantum spin systems driven by dissipative processes

    E-Print Network [OSTI]

    Hebenstreit, Florian; Hornung, Manes; Jiang, Fu-Jiun; Schranz, Franziska; Wiese, Uwe-Jens

    2015-01-01T23:59:59.000Z

    We study the real-time evolution of large open quantum spin systems in two spatial dimensions, whose dynamics is entirely driven by a dissipative coupling to the environment. We consider different dissipative processes and investigate the real-time evolution from an ordered phase of the Heisenberg or XY-model towards a disordered phase at late times. The corresponding Kossakowski-Lindblad equation is solved via an efficient cluster algorithm. We find that the symmetry of the dissipative process determines the time scales which govern the approach towards a new equilibrium phase at late times. Most notably, we find a slow equilibration if the dissipative process conserves any of the magnetization Fourier modes. In these cases, the dynamics can be interpreted as a diffusion process of the conserved quantity.

  12. Real-time dynamics of open quantum spin systems driven by dissipative processes

    E-Print Network [OSTI]

    Florian Hebenstreit; Debasish Banerjee; Manes Hornung; Fu-Jiun Jiang; Franziska Schranz; Uwe-Jens Wiese

    2015-02-10T23:59:59.000Z

    We study the real-time evolution of large open quantum spin systems in two spatial dimensions, whose dynamics is entirely driven by a dissipative coupling to the environment. We consider different dissipative processes and investigate the real-time evolution from an ordered phase of the Heisenberg or XY-model towards a disordered phase at late times. The corresponding Kossakowski-Lindblad equation is solved via an efficient cluster algorithm. We find that the symmetry of the dissipative process determines the time scales which govern the approach towards a new equilibrium phase at late times. Most notably, we find a slow equilibration if the dissipative process conserves any of the magnetization Fourier modes. In these cases, the dynamics can be interpreted as a diffusion process of the conserved quantity.

  13. A real-time algorithm for the harmonic estimation and frequency tracking of dominant components in fusion plasma magnetic diagnostics

    SciTech Connect (OSTI)

    Alves, D.; Coelho, R. [Associação Euratom/IST, Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001 Lisboa (Portugal)] [Associação Euratom/IST, Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001 Lisboa (Portugal); Collaboration: JET-EFDA Contributors

    2013-08-15T23:59:59.000Z

    The real-time tracking of instantaneous quantities such as frequency, amplitude, and phase of components immerse in noisy signals has been a common problem in many scientific and engineering fields such as power systems and delivery, telecommunications, and acoustics for the past decades. In magnetically confined fusion research, extracting this sort of information from magnetic signals can be of valuable assistance in, for instance, feedback control of detrimental magnetohydrodynamic modes and disruption avoidance mechanisms by monitoring instability growth or anticipating mode-locking events. This work is focused on nonlinear Kalman filter based methods for tackling this problem. Similar methods have already proven their merits and have been successfully employed in this scientific domain in applications such as amplitude demodulation for the motional Stark effect diagnostic. In the course of this work, three approaches are described, compared, and discussed using magnetic signals from the Joint European Torus tokamak plasma discharges for benchmarking purposes.

  14. Accelerating the Customer-Driven Microgrid Through Real-Time Digital Simulation

    SciTech Connect (OSTI)

    I. Leonard; T. Baldwin; M. Sloderbeck

    2009-07-01T23:59:59.000Z

    Comprehensive design and testing of realistic customer-driven microgrids requires a high performance simulation platform capable of incorporating power system and control models with external hardware systems. Traditional non real-time simulation is unable to fully capture the level of detail necessary to expose real-world implementation issues. With a real-time digital simulator as its foundation, a high-fidelity simulation environment that includes a robust electrical power system model, advanced control architecture, and a highly adaptable communication network is introduced. Hardware-in-the-loop implementation approaches for the hardware-based control and communication systems are included. An overview of the existing power system model and its suitability for investigation of autonomous island formation within the microgrid is additionally presented. Further test plans are also documented.

  15. DECENTRALIZED REAL-TIME MANAGEMENT LARGELY UNPREDICTABLE POWER NEEDS AND SUPPLY

    E-Print Network [OSTI]

    Wedde, Horst F.

    of unpredictable power need and supply situations. We model a representative scenario to explain variousDECENTRALIZED REAL-TIME MANAGEMENT OF LARGELY UNPREDICTABLE POWER NEEDS AND SUPPLY H. F. Wedde*, F technologies based on solar or wind power, or on renewable energy sources, is an adequate management

  16. Toward Real-Time Simulation of Physics Based Lithium-Ion Battery Models

    E-Print Network [OSTI]

    Subramanian, Venkat

    Toward Real-Time Simulation of Physics Based Lithium-Ion Battery Models Venkat R. Subramanian Technological University, Cookeville, Tennessee 38505, USA Recent interest in lithium-ion batteries for electric on the computational efficiency of lithium-ion battery models. This paper presents an effective approach to simulate

  17. Real-time observation of lithium fibers growth inside a nanoscale lithium-ion battery

    E-Print Network [OSTI]

    Endres. William J.

    Real-time observation of lithium fibers growth inside a nanoscale lithium-ion battery Hessam.1063/1.3643035] Lithium-ion batteries are of great interest due to their high energy density, however, various safety properties, many applications are pos- sible.10,11 One is the electrolyte of the lithium-ion batteries, where

  18. Real-time Rendering of Complex Vector Data on 3d Terrain Models

    E-Print Network [OSTI]

    Behnke, Sven

    Real-time Rendering of Complex Vector Data on 3d Terrain Models M. Schneider, M. Guthe, and R of buildings, streets and runway (from left to right). Abstract. In this paper we present a hybrid technique model. The first part of this hybrid technique is a texture-based approach that is especially suited

  19. Real-Time BRDF Editing in Complex Lighting Aner Ben-Artzi

    E-Print Network [OSTI]

    O'Brien, James F.

    geometry and lighting, and we render the BRDFs using their final placement within a scene using complexReal-Time BRDF Editing in Complex Lighting Aner Ben-Artzi Columbia University Ryan Overbeck, complex illumination. All-frequency effects (ranging from near-mirror reflections and hard shadows

  20. Developing a Real-Time Identify-and-Locate System for the Blind

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Developing a Real-Time Identify-and-Locate System for the Blind Gemstone Team Vision 1 , Bobby Bobo Lighthouse for the Blind 3 University of Maryland Institute for Advanced Computer Studies 4 University to the blind in the foreseeable future. But despite the rapid advances in computer hardware and vi- sion

  1. Mauve: a Component-based Modeling Framework for Real-time Analysis of Robotic Applications

    E-Print Network [OSTI]

    Mauve: a Component-based Modeling Framework for Real-time Analysis of Robotic Applications Charles paradigm for robotic software devel- opment [2], applied in many applications [3], [4], [5], [6]. Resulting validation of the robotic application, by directly analysing the architecture specification, and limiting

  2. A Framework for Integrating real-time MRI with Robot Control: Application to Simulated

    E-Print Network [OSTI]

    Azevedo, Ricardo

    1 A Framework for Integrating real-time MRI with Robot Control: Application to Simulated applications in urology [2], cardiac ablation with fluoroscopy guided Sensei robotic catheter system (Hansen interventional paradigms including image-guided robot assistance. Most often the use of an intraoperative imaging

  3. Compact real-time 2-D gradient-based analog VLSI motion sensor

    E-Print Network [OSTI]

    Deutschmann, Rainer

    the sensor might be favourably applied in industrial applications. Keywords: analog VLSI, motion sensor selectivity even for very low contrast input is demonstrated. As application it is shown how the pixel, smart vision sensor, parallel image processing, real-time computation, optical ow, machine vision, robot

  4. An efficient algorithm for real-time estimation and prediction of dynamic OD tables

    E-Print Network [OSTI]

    Bierlaire, Michel

    An efficient algorithm for real-time estimation and prediction of dynamic OD tables M. Bierlaire and F. Crittin February, 2002 Abstract The problem of estimating and predicting Origin-Destination (OD more intricate. We consider here a least-square modeling approach for solving the OD estimation

  5. Software-only Multiple Variable Length Decoding for Real-Time Video on MDSP*

    E-Print Network [OSTI]

    Chaudhary, Vipin

    3.44 Software-only Multiple Variable Length Decoding for Real- Time Video on MDSP* Ganesh Yadav', R Inc. Abstract-We present the multiple variable length decode algorithm implemented in most video mechanism. I. INTRODUCTION Variable Length Decoding (VLD) is the most important part of the video standards

  6. REAL-TIME INTERACTIVE MUSICAL SYSTEMS: AN OVERVIEW A.N.Robertson

    E-Print Network [OSTI]

    Robertson, Andrew

    REAL-TIME INTERACTIVE MUSICAL SYSTEMS: AN OVERVIEW A.N.Robertson Centre for Digital Music of developments towards inter- active musical systems. A description of an interactive system is given and we at the history of research into the problem of automatic accompaniment, discuss a variety of current interactive

  7. Adaptive Connection Admission Control for Mission Critical Real-Time Communication Networks

    E-Print Network [OSTI]

    Bettati, Riccardo

    admission control in real-time communication networks. Much of the existing work on connection admission in resource availability. We take an innovative approach: First, we allow an application to specify QoS over include supervisory command and control of defense systems, manufacturing plants, etc. The success

  8. Adaptive Connection Admission Control for Mission Critical Real-Time Communication Networks

    E-Print Network [OSTI]

    Sahoo, Anirudha

    in real-time communication networks. Much of the existing work on connection admission control (CAC availability. We take an innovative approach: First, we allow an application to specify QoS in a range, rather include supervisory command and control of defense systems, manufacturing plants, etc. The success

  9. A REAL TIME 3D VISUALIZATION PROTOTYPE FOR INTERVENTIONAL MAGNETIC RESONANCE IMAGING

    E-Print Network [OSTI]

    Schumann, Heidrun

    A REAL TIME 3D VISUALIZATION PROTOTYPE FOR INTERVENTIONAL MAGNETIC RESONANCE IMAGING JENS FISCHER­invasive examinations. This prototype allows simultaneous visualization of three different types of data: a 3D­Magnetic@informatik.uni­rostock.de Abstract: This paper describes a prototype of a visualization system which is designed to support

  10. Real-Time Queues in Heavy Trac with Earliest-Deadline-First Queue Discipline

    E-Print Network [OSTI]

    , teleconference or movie). Real-time computer systems also control much of modern tech- nology, for example aspects of modern manufactur- ing facilities. Computerized control systems must receive and react to state engines and braking systems in automobiles, all avionic systems (including air traÃ?c control) and all

  11. Integrating Redundancy Management and Real-time Services for Ultra Reliable Control Systems

    E-Print Network [OSTI]

    Younis, Mohamed

    that their functional semantic is coupled with temporal correctness. Not only the embedded computer needs to perform with that algorithm. Some of the real-time applications are also safety-critical and require high level of reliability and fault-tolerance to ensure uninterrupted service that might risk the safety of the system. Avionics

  12. A Brain-to-Brain Interface for Real-Time Sharing of Sensorimotor Information

    E-Print Network [OSTI]

    Indiana University

    A Brain-to-Brain Interface for Real-Time Sharing of Sensorimotor Information Miguel Pais-Vieira1 Safra International Institute for Neuroscience of Natal (ELS-IINN), RN 59066-060, Natal, Brazil. A brain-to-brain the brains of two rats. In this BTBI, an ``encoder'' rat performed sensorimotor tasks that required

  13. CSEM WP 136 Is Real-Time Pricing Green?: The Environmental

    E-Print Network [OSTI]

    California at Berkeley. University of

    CSEM WP 136 Is Real-Time Pricing Green?: The Environmental Impacts of Electricity Demand Variance Stephen P. Holland and Erin T. Mansur August 2004 This paper is part of the Center for the Study of Energy Markets (CSEM) Working Paper Series. CSEM is a program of the University of California Energy Institute

  14. Integrating Authored and Real-Time Social Media Pei-Yu (Peggy) Chi

    E-Print Network [OSTI]

    Lieberman, Henry

    introduces a new style of social media combining aspects of the real-time and authored styles explosion in the popularity of social media, giving people new ways of connecting and forming relationships of this paper is to introduce a new kind of hybrid of these two kinds of social media, which we refer to

  15. CLOUD CHAMBER: A PERFORMANCE INVOLVING REAL TIME TWO-WAY INTERACTION BETWEEN SUBATOMIC RADIOACTIVE

    E-Print Network [OSTI]

    Miranda, Eduardo Reck

    " by the radiation-generated ion patterns in the glass chamber. If John plays in one way the ion particlesCLOUD CHAMBER: A PERFORMANCE INVOLVING REAL TIME TWO-WAY INTERACTION BETWEEN SUBATOMIC RADIOACTIVE, Harwell, Oxford, UK ABSTRACT ,,Cloud Chamber is a live performance created by composer Alexis Kirke

  16. Improving Soft Real-Time Performance Through Better Slack Reclaiming Caixue Lin and Scott A. Brandt

    E-Print Network [OSTI]

    Brandt, Scott A.

    -real-time applications depends upon the effective distribution of dynamic slack--reserved, but unused resources resources than they have reserved, creat- ing dynamic slack--reserved but unused resources1. Simi- larly resources than they have reserved. The efficient reclamation and redistri- bution of dynamic slack

  17. ROBUST CONTROL ANALYSIS USING REAL-TIME IMPLEMENTATION OF A HYBRID FUEL CELL POWER GENERATION SYSTEM

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ROBUST CONTROL ANALYSIS USING REAL-TIME IMPLEMENTATION OF A HYBRID FUEL CELL POWER GENERATION the control of two identical boost power converters. For the closed-loop control a previously proposed proposed by the authors in former works. The control actuators are the duty cycles of the boost power

  18. PRISACARIU, REID: PWP3D 1 PWP3D: Real-time segmentation and

    E-Print Network [OSTI]

    Oxford, University of

    method allows for fast 2D­3D pose tracking and 2D segmentation using a single, unified, energy function in print or electronic forms. #12;2 PRISACARIU, REID: PWP3D The most closely related work to our ownPRISACARIU, REID: PWP3D 1 PWP3D: Real-time segmentation and tracking of 3D objects Victor A

  19. A 3D reconstruction from real-time stereoscopic images using GPU

    E-Print Network [OSTI]

    Boyer, Edmond

    scene models in image- based rendering. Stereovision involves two processes: the binocular of features methods must be designed to establish the correct correspondence between images features in real-time 3D reconstruction feedback. Examples include machine vision in robotics task where feedback for autonomous control

  20. A practical post-processing technique for real-time block-based coding system

    E-Print Network [OSTI]

    Chan, Chris Y. H.

    1 A practical post-processing technique for real-time block-based coding system Yuk-Hee Chan, Sung to restore the images encoded with block-based compression standards such as JPEG. This method classi es with the reported post-processing methods. Keywords| I. Introduction THE Joint Photographic Experts Group JPEG im