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they are not comprehensive nor are they the most current set.
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1

Real Time Simulation of Power Grid Disruptions  

Science Conference Proceedings (OSTI)

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.

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

2

Real Time Grid Reliability Management 2005  

Science Conference Proceedings (OSTI)

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.

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

2008-07-07T23:59:59.000Z

3

Scalable real time data management for smart grid  

Science Conference Proceedings (OSTI)

This paper presents GridMW, a scalable and reliable data middleware layer for smart grids. Smart grids promise to improve the efficiency of power grid systems and reduce green house emissions through incorporating power generation from renewable sources ... Keywords: data management middleware, efficiency, near real time, performance, smart grids

Jian Yin; Anand Kulkarni; Sumit Purohit; Ian Gorton; Bora Akyol

2011-12-01T23:59:59.000Z

4

Real Time Grid Reliability Management 2005  

E-Print Network (OSTI)

Environmental Research Energy Systems Integration Real Time2) integration with CA ISO energy management system (EMS);2) integration with CA ISO energy management system (EMS);

Eto, Joe

2008-01-01T23:59:59.000Z

5

Management of real-time streaming data grid services  

Science Conference Proceedings (OSTI)

We discuss the architectural and management support for real time data stream applications, both in terms of lower level messaging and higher level service, filter and session structures. In our approach, messaging systems act as a Grid substrate that ...

Geoffrey Fox; Galip Aydin; Harshawardhan Gadgil; Shrideep Pallickara; Marlon Pierce; Wenjun Wu

2005-11-01T23:59:59.000Z

6

Real time contingency analysis for power grids  

Science Conference Proceedings (OSTI)

Modern power grids are continuously monitored by trained system operators equipped with sophisticated monitoring and control systems. Despite such precautionary measures, large blackouts, that affect more than a million consumers, occur quite frequently. ...

Anshul Mittal; Jagabondhu Hazra; Nikhil Jain; Vivek Goyal; Deva P. Seetharam; Yogish Sabharwal

2011-08-01T23:59:59.000Z

7

Real-Time Grid Reliability Management PIER Final Project Report  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-Time Grid Reliability Management PIER Final Project Report Real-Time Grid Reliability Management PIER Final Project Report Title Real-Time Grid Reliability Management PIER Final Project Report Publication Type Report Year of Publication 2008 Authors Eto, Joseph H., Manu Parashar, Bernard C. Lesieutre, and Nancy J. Lewis Pagination 62 Date Published 12/2008 Publisher LBNL City Berkeley Keywords consortium for electric reliability technology solutions (certs), energy analysis and environmental impacts department Abstract 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.

8

Real-time pricing program in a smart grid environment  

Science Conference Proceedings (OSTI)

Improving system efficiency and reliability is motivating countries to design and execute different types of time of use demand response programs. However, certain deficiencies prevent these programs from reaching their goals. Smart meters as a mechanism ... Keywords: real-time pricing, smart grid, time of use programs

Hassan Monsef, Bin Wu

2013-04-01T23:59:59.000Z

9

Toward Real Time Data Analysis for Smart Grids  

Science Conference Proceedings (OSTI)

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.

Yin, Jian; Gorton, Ian; Sharma, Poorva

2012-11-10T23:59:59.000Z

10

REAL TIME GRID RELIABILITY MANAGEMENT 2005 PIER FINAL PROJECT REPORT  

NLE Websites -- All DOE Office Websites (Extended Search)

REAL TIME GRID RELIABILITY REAL TIME GRID RELIABILITY MANAGEMENT 2005 Prepared For: California Energy Commission Public Interest Energy Research Program Prepared By: Lawrence Berkeley National Laboratory PIER FINAL PROJECT REPORT LBNL-62368 ii Legal Notice This report was prepared as a result of work sponsored by the California Energy Commission (Energy Commission). It does not necessarily represent the views of the Energy Commission, its employees, or the State of California. The Energy Commission, the State of California, its employees, contractors, and subcontractors make no warrant, express or implied, and assume no legal liability for the information in this report; nor does any party represent that the use of this information will not infringe upon privately owned rights. This report has not been

11

Data Analysis for Real Time Identification of Grid Disruptions  

DOE Green Energy (OSTI)

The U.S. electric power system comprises multiple distinct interconnections of generators, high voltage transmission systems, and local distribution systems that maintain a continuous balance between generation and load with impressive levels of efficiency and reliability. This critical infrastructure has served the nation remarkably well, but is likely to see more changes over the next decade than it has seen over the past century. In particular, the widespread deployment of renewable generation, smart-grid controls, energy storage, and new conducting materials will require fundamental changes in grid planning and the way we run the power grid. Two challenges in the realization of the smart grid technology are the ability to visualize the deluge of expected data streams for global situational awareness; as well as the ability to detect disruptive and classify such events from spatially-distributed high-speed power system frequency measurements. One element of smart grid technology is the installation of a wide-area frequency measurement system on the electric poles in the streets for conditions monitoring of the distribution lines. This would provide frequency measurements about the status of the electric grid and possible information about impending problems before they start compounding and cascading. The ability to monitor the distribution lines is just one facet of proposed smart grid technology. Other elements include the installation of advanced devices such as smart meters, the automation of transmission lines, the integration of renewable energy technologies such as solar and wind, and the advancement of plug-in hybrid electric vehicle technology. This chapter describes recent advancements in the area of intelligent data analysis for real time detection of disruptive events from power system frequency data collected using an existing internet-based frequency monitoring network (FNET), which is a precursor for future smart-grid systems.

Chandola, Varun [ORNL; Omitaomu, Olufemi A [ORNL; Fernandez, Steven J [ORNL

2012-01-01T23:59:59.000Z

12

Scalable Real Time Data Management for Smart Grid  

Science Conference Proceedings (OSTI)

This paper presents GridMW, a scalable and reliable data middleware for smart grids. Smart grids promise to improve the efficiency of power grid systems and reduce green house emissions through incorporating power generation from renewable sources and shaping demand to match the supply. As a result, power grid systems will become much more dynamic and require constant adjustments, which requires analysis and decision making applications to improve the efficiency and reliability of smart grid systems.

Yin, Jian; Kulkarni, Anand V.; Purohit, Sumit; Gorton, Ian; Akyol, Bora A.

2011-12-16T23:59:59.000Z

13

Real-time Eulerian water simulation using a restricted tall cell grid  

Science Conference Proceedings (OSTI)

We present a new Eulerian fluid simulation method, which allows real-time simulations of large scale three dimensional liquids. Such scenarios have hitherto been restricted to the domain of off-line computation. To reduce computation time we use a hybrid ... Keywords: fluid simulation, multigrid, real time, tall cell grid

Nuttapong Chentanez; Matthias Müller

2011-08-01T23:59:59.000Z

14

Real-Time Grid Reliability Management PIER Final Project Report  

NLE Websites -- All DOE Office Websites (Extended Search)

phasor data. These tools and technologies will also set the stage for a future smart electricity grid that will be able to automatically sense and respond to system...

15

CERTS 2012 Program Review - Real Time Simulation of Power Grid Operation & Contral - Mani Venkatasubramanian, WSU  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Power Grid Simulator Power Grid Simulator Mani V. Venkatasubramanian Dave Anderson, Chuanlin Zhao Carl Hauser, David Bakken Anjan Bose Washington State University Pullman WA 2 GridSim - Real Time Simulation of Power Grid Operation & Control * Funded by USDOE * Project team: Mani Venkatasubramanian (Project Lead), Anjan Bose, Dave Bakken, Carl Hauser, Chuanlin Zhao, Dave Anderson, Alex Ning, Ming Meng, Lin Zhang * Simulate PMU like real-time responses of large- scale power system including power grid dynamics and communication network 3 Project Objectives Improve Reliability and Security of the Electric Power Grid by developing * The new communications and information systems needed to support better automatic controls and operator support tools * The new wide area automatic algorithms needed

16

Enhancing Security of Real-Time Applications on Grids through Dynamic Scheduling  

E-Print Network (OSTI)

advances in processing power, network bandwidth, and storage capacity, Grids are emerging as next [38], and distributed medical data systems [20]. On-line transaction processing systems are examplesEnhancing Security of Real-Time Applications on Grids through Dynamic Scheduling Tao Xie Xiao Qin

Feitelson, Dror

17

Optimal Real-time Pricing Algorithm Based on Utility Maximization for Smart Grid  

E-Print Network (OSTI)

Optimal Real-time Pricing Algorithm Based on Utility Maximization for Smart Grid Pedram Samadi algorithm for the future smart grid. We focus on the interactions between the smart meters and the energy-mail:{psamadi, hamed, rschober, vincentw, jurij}@ece.ubc.ca Abstract--In this paper, we consider a smart power infras

Wong, Vincent

18

Towards Real-Time High Performance Computing For Power Grid Analysis  

SciTech Connect

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.

Hui, Peter SY; Lee, Barry; Chikkagoudar, Satish

2012-11-16T23:59:59.000Z

19

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

E-Print Network (OSTI)

for a possible future Electrical Power Grid based on real-time extensions to Grid computing. We examine several terms ­ monitoring, real time systems, distributed computing, grid computing, publish/subscribe system I monitoring is a distributed soft real-time monitoring system. Most of the data for monitoring should

Taylor, Gary

20

ModelCentric Smart Grid Workshop: From Hard Dollar Justification to RealTime Control and the Analytics That Make It Possible  

E-Print Network (OSTI)

Agenda ModelCentric Smart Grid Workshop: From Hard Dollar Justification to RealTime Control managers and technical personnel involved with smart grid activities. The second day takes a deeper dive:30 p.m. Smart Grid "harddollar" value streams ­ an incremental value approach Efficiency

Ohta, Shigemi

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

PhotoVoltaic distributed generation for Lanai power grid real-time simulation and control integration scenario.  

Science Conference Proceedings (OSTI)

This paper discusses the modeling, analysis, and testing in a real-time simulation environment of the Lanai power grid system for the integration and control of PhotoVoltaic (PV) distributed generation. The Lanai Island in Hawaii is part of the Hawaii Clean Energy Initiative (HCEI) to transition to 30% renewable green energy penetration by 2030. In Lanai the primary loads come from two Castle and Cook Resorts, in addition to residential needs. The total peak load profile is 12470 V, 5.5 MW. Currently there are several diesel generators that meet these loading requirements. As part of the HCEI, Lanai has initially installed 1.2 MW of PV generation. The goal of this study has been to evaluate the impact of the PV with respect to the conventional carbon-based diesel generation in real time simulation. For intermittent PV distributed generation, the overall stability and transient responses are investigated. A simple Lanai 'like' model has been developed in the Matlab/Simulink environment (see Fig. 1) and to accommodate real-time simulation of the hybrid power grid system the Opal-RT Technologies RT-Lab environment is used. The diesel generators have been modelled using the SimPowerSystems toolbox swing equations and a custom Simulink module has been developed for the High level PV generation. All of the loads have been characterized primarily as distribution lines with series resistive load banks with one VAR load bank. Three-phase faults are implemented for each bus. Both conventional and advanced control architectures will be used to evaluate the integration of the PV onto the current power grid system. The baseline numerical results include the stable performance of the power grid during varying cloud cover (PV generation ramping up/down) scenarios. The importance of assessing the real-time scenario is included.

Robinett, Rush D., III; Kukolich, Keith (Opal RT Technologies, Montreal, Quebec, Canada); Wilson, David Gerald; Schenkman, Benjamin L.

2010-06-01T23:59:59.000Z

22

Real-time digital control of DFIG-based wind generators for grid support.  

E-Print Network (OSTI)

??In this thesis, a set of new converter /control techniques are developed for the Grid Side and Rotor Side converter applications in DFIG wind power… (more)

Mesbah, Mohsen

2012-01-01T23:59:59.000Z

23

Power line communications: an implementation of a real time control architecture for smart grid .  

E-Print Network (OSTI)

??Negli ultimi anni è aumentata la presenza di risorse energetiche distribuite (DERs) nella rete elettrica. La visione della ``rete intelligente'' (Smart Grid) cerca di introdurre… (more)

Trentini, Francesco

2012-01-01T23:59:59.000Z

24

Near Real-Time Push Middleware  

E-Print Network (OSTI)

Architecture.. 102 System Trial .. 109 Chapter 6 Electric vehicle smart charging and vehicle-to-gridSmart Grid, to address deficiencies in existing research, and to advance the state of the art in near real-time push architectures.

Mal, Siddhartha Byron

2012-01-01T23:59:59.000Z

25

California ISO Real-Time Voltage Security Assessment (VSA) Project...  

NLE Websites -- All DOE Office Websites (Extended Search)

Arnold Schwarzenegger Governor REAL-TIME GRID RELIABILITY MANAGEMENT California ISO Real-Time Voltage Security Assessment (VSA) Project: Summary of Survey Results on Methodologies...

26

1822 IEEE TRANSACTIONS ON SMART GRID, VOL. 3, NO. 4, DECEMBER 2012 Real-Time Price-Based Demand Response  

E-Print Network (OSTI)

in smart grid, which will help power markets set efficient energy prices, mitigate market power, improve column represents the actual cost with perfect ac- tual electricity price information. The total energy. 1­10, Mar. 2011. [6] "Energy efficiency trends in residential and commercial buildings," 2010

Fu, Yong

27

Real-time shading  

Science Conference Proceedings (OSTI)

Real-time procedural shading was once seen as a distant dream. When the first version of this course was offered four years ago, real-time shading was possible, but only with one-of-a-kind hardware or by combining the effects of tens to hundreds of rendering ...

Marc Olano; Kurt Akeley; John C. Hart; Wolfgang Heidrich; Michael McCool; Jason L. Mitchell; Randi Rost

2004-08-01T23:59:59.000Z

28

Real Power Regulation for the Utility Power Grid via ...  

Real Power Regulation for the Utility Power Grid via Responsive Loads Technology Summary A new methodology for dynamically managing an electrical ...

29

A framework for real-time power management of a grid-tied microgrid to extend battery lifetime and reduce cost of energy  

Science Conference Proceedings (OSTI)

Because of different technical and economical concerns, battery is happened to be an inevitable part of a microgrid as well as the most expensive component. This fact brings up the necessity of a real-time power management to guarantee the maximum possible ...

S. A. Pourmousavi; Ratnesh K. Sharma; Babak Asghari

2012-01-01T23:59:59.000Z

30

Real time wind turbine simulator.  

E-Print Network (OSTI)

??A novel dynamic real-time wind turbine simulator (WTS) is developed in this thesis, which is capable of reproducing dynamic behavior of real wind turbine. The… (more)

Gong, Bing

2007-01-01T23:59:59.000Z

31

Wide-area, real-time monitoring and visualization system  

SciTech Connect

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.

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

2011-11-15T23:59:59.000Z

32

Real-time performance monitoring and management system  

SciTech Connect

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.

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

2007-06-19T23:59:59.000Z

33

Wide-area, real-time monitoring and visualization system  

DOE Patents (OSTI)

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.

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

2013-03-19T23:59:59.000Z

34

REAL TIME SYSTEM OPERATIONS 2006-2007  

Science Conference Proceedings (OSTI)

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.

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

2008-08-15T23:59:59.000Z

35

Real Time Pricing and the Real Live Firm  

E-Print Network (OSTI)

response to electricity real-time prices: short run and longwith respect to real time prices has not been extensivelywere linked to real-time prices, most customers indicated

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

2004-01-01T23:59:59.000Z

36

A real time priority scheduler  

Science Conference Proceedings (OSTI)

The real time priority scheduler reported herein evolved from a design effort to provide software aids for handling the interrupts that occur in hybrid computation. Since these interrupts are both internal and external (i.e., generated internal and external ...

Karl Ramsay; Jon C. Strauss

1966-01-01T23:59:59.000Z

37

suntimes.com Member of the Sun-Times News Group Site STNG Web IIT, U. of I., Oak Park to give electric 'smart grid' a  

E-Print Network (OSTI)

The smart grid will move our country's electrical grid into the digital age. By integrating real- time, two National Laboratory is working to help develop a smart grid that will not only adapt in real-time to handle, enabling cost effective (smart) interaction with the grid. Researchers from Argonne's Center for Energy

Heller, Barbara

38

Time Stamp Attack on Wide Area Monitoring System in Smart Grid  

E-Print Network (OSTI)

Security becomes an extremely important issue in smart grid. To maintain the steady operation for smart power grid, massive measurement devices must be allocated widely among the power grid. Previous studies are focused on false data injection attack to the smart grid system. In practice, false data injection attack is not easy to implement, since it is not easy to hack the power grid data communication system. In this paper, we demonstrate that a novel time stamp attack is a practical and dangerous attack scheme for smart grid. Since most of measurement devices are equipped with global positioning system (GPS) to provide the time information of measurements, it is highly probable to attack the measurement system by spoofing the GPS. By employing the real measurement data in North American Power Grid, simulation results demonstrate the effectiveness of the time stamp attack on smart grid.

Zhang, Zhenghao; Li, Husheng; Pei, Changxing

2011-01-01T23:59:59.000Z

39

Definition: Real-Time Load Measurement And Management | Open Energy  

Open Energy Info (EERE)

Management Management Jump to: navigation, search Dictionary.png Real-Time Load Measurement And Management This function provides real-time measurement of customer consumption and management of load through Advanced Metering Infrastructure (AMI) systems (smart meters, two-way communications) and embedded appliance controllers that help customers make informed energy use decisions via real-time price signals, time-of-use (TOU) rates, and service options.[1] Related Terms advanced metering infrastructure, time-of-use pricing, smart grid References ↑ SmartGrid.gov 'Description of Functions' An in LikeLike UnlikeLike You like this.Sign Up to see what your friends like. line Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Real-Time_Load_Measurement_And_Management&oldid=493115

40

Real Time Grid Reliability Management 2005  

E-Print Network (OSTI)

Security Regions of Electrical Power Systems”, ProceedingsSecurity Regions of Electrical Power Systems by PowerSecurity Regions of Electrical Power Systems by Power

Eto, Joe

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Real Time Grid Reliability Management 2005  

E-Print Network (OSTI)

the frequency and voltage requirements for the effect of ans revised voltage- VAR requirements. Prototype tailoring andVoltage Stability Requirements .

Eto, Joe

2008-01-01T23:59:59.000Z

42

Real Time Grid Reliability Management 2005  

E-Print Network (OSTI)

investment. References Electric Power Research Institute andstability analysis of electric power systems using energyNavin Bhatt (American Electric Power) Participants of the

Eto, Joe

2008-01-01T23:59:59.000Z

43

Real Time Grid Reliability Management 2005  

E-Print Network (OSTI)

transmission planning to evaluate future needs under different assumptions for resource availability,transmission operators depend on to ensure system reliability. The assumption of availabilitytransmission operators depend on to ensure system reliability. The assumption of traditional governor availability

Eto, Joe

2008-01-01T23:59:59.000Z

44

Arnold Schwarzenegger REAL-TIME GRID RELIABILITY  

E-Print Network (OSTI)

.................................................................................................................................. iii Control Milestones and Status&D and Support (Sub-Contracts) 15220. #12;v Control Milestones and Status Control Milestone Due Date Status Milestones, all major AOP Milestones and ORNL PEP Milestone. In FY2007, ORNL HTS Program has met all ten

45

Real Time Grid Reliability Management 2005  

E-Print Network (OSTI)

loss of two 345 kV transmission lines Jim Bridger – Kinporton the 400 kV transmission line Konjsko – Velebit. [10] 22.Canton 345-kV transmission lines. The blackout affected up

Eto, Joe

2008-01-01T23:59:59.000Z

46

Real Time Grid Reliability Management 2005  

E-Print Network (OSTI)

2003: Croatia and Bosnia Herzegovina, Eastern U.S. andin Croatia and Bosnia Herzegovina on January 12, 2003 was

Eto, Joe

2008-01-01T23:59:59.000Z

47

Arnold Schwarzenegger REAL-TIME GRID RELIABILITY  

E-Print Network (OSTI)

. 1999: Northeast U.S. (2 events) 13. 2003: Croatia and Bosnia Herzegovina, Eastern U.S. and Canada the use of emergency procedures. [3] 21. Blackout in Croatia and Bosnia Herzegovina on January 12, 2003

48

Real Time Grid Reliability Management 2005  

E-Print Network (OSTI)

Stability/Security Assessment and On-Line Control”, EPRIStability Analysis Program (VSTAB), Version 2.1, User’s Manual, EPRIStability Analysis Program (VSTAB)”, Version 2.1, User’s Manual, EPRI

Eto, Joe

2008-01-01T23:59:59.000Z

49

Arnold Schwarzenegger REAL-TIME GRID RELIABILITY  

E-Print Network (OSTI)

necessary to select a preferred cycle and fluid II-' I #12;corrosion and stability problems, and to develop concepts for a com-elucidate the corrosion and stability characteristics pact, high.S. Army Construction Engineering Research Laboratory (CERL), NBS, EPRI, 11-4 I #12;LIST OF PUBLICATIONS 1

50

Real Time Grid Reliability Management 2005  

E-Print Network (OSTI)

Advances in Power System Control, Operation and ManagementAdvances in Power System Control, Operation and ManagementPower System Small Signal Stability Analysis”, Fourth International Conference on Advances in Power System Control, Operation

Eto, Joe

2008-01-01T23:59:59.000Z

51

Real Time Grid Reliability Management 2005  

NLE Websites -- All DOE Office Websites (Extended Search)

period, the traditional approach to reliability management - construction of new transmission lines - has not been pursued due to unresolved issues related to the...

52

Rethinking Real-Time Electricity Pricing  

E-Print Network (OSTI)

Most US consumers are charged a near-constant retail price for electricity, despite substantial hourly variation in the wholesale market price. This paper evaluates the …rst program to expose residential consumers to hourly real-time pricing (RTP). I …nd that enrolled households are statistically signi…cantly price elastic and that consumers responded by conserving energy during peak hours, but remarkably did not increase average consumption during o¤-peak times. The program increased consumer surplus by $10 per household per year. While this is only one to two percent of electricity costs, it illustrates a potential additional bene…t from investment in retail Smart Grid applications, including the advanced electricity meters required to observe a household’s hourly consumption.

Hunt Allcott; Bill Hogan; Erich Muehlegger; Larry Katz; Erin Mansur; Sendhil Mullainathan; Paul Niehaus; Chris Nosko; Ariel Pakes; Dave Rapson; Rob Stavins; Frank Wolak

2010-01-01T23:59:59.000Z

53

Real Time Pricing and the Real Live Firm  

E-Print Network (OSTI)

2002. “Industrial response to electricity real-time prices:industrial customer operated their facility using hourly electricity prices

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

2004-01-01T23:59:59.000Z

54

Real-Time Airborne Particle Analyzer  

Geology, biology, and environmental science HAZMAT Weapons inspection : Real-time method for measuring elemental composition

55

Predictable real-time software synthesis  

Science Conference Proceedings (OSTI)

Formal theories for real-time systems (such as timed process algebra, timed automata and timed petri nets) have gained great success in the modeling of concurrent timing behavior and in the analysis of real-time properties. However, due to the ineliminable ... Keywords: Formal methods, Program synthesis, Real-time systems

Jinfeng Huang; Jeroen Voeten; Henk Corporaal

2007-08-01T23:59:59.000Z

56

A brief comparison between grid based real space algorithms andspectrum algorithms for electronic structure calculations  

Science Conference Proceedings (OSTI)

Quantum mechanical ab initio calculation constitutes the biggest portion of the computer time in material science and chemical science simulations. As a computer center like NERSC, to better serve these communities, it will be very useful to have a prediction for the future trends of ab initio calculations in these areas. Such prediction can help us to decide what future computer architecture can be most useful for these communities, and what should be emphasized on in future supercomputer procurement. As the size of the computer and the size of the simulated physical systems increase, there is a renewed interest in using the real space grid method in electronic structure calculations. This is fueled by two factors. First, it is generally assumed that the real space grid method is more suitable for parallel computation for its limited communication requirement, compared with spectrum method where a global FFT is required. Second, as the size N of the calculated system increases together with the computer power, O(N) scaling approaches become more favorable than the traditional direct O(N{sup 3}) scaling methods. These O(N) methods are usually based on localized orbital in real space, which can be described more naturally by the real space basis. In this report, the author compares the real space methods versus the traditional plane wave (PW) spectrum methods, for their technical pros and cons, and the possible of future trends. For the real space method, the author focuses on the regular grid finite different (FD) method and the finite element (FE) method. These are the methods used mostly in material science simulation. As for chemical science, the predominant methods are still Gaussian basis method, and sometime the atomic orbital basis method. These two basis sets are localized in real space, and there is no indication that their roles in quantum chemical simulation will change anytime soon. The author focuses on the density functional theory (DFT), which is the most used method for quantum mechanical material science simulation.

Wang, Lin-Wang

2006-12-01T23:59:59.000Z

57

Real time infrared aerosol analyzer  

DOE Patents (OSTI)

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.

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

1990-01-01T23:59:59.000Z

58

Improving RUC-1 Wind Estimates by Incorporating Near-Real-Time Aircraft Reports  

Science Conference Proceedings (OSTI)

A verification study of wind accuracy is presented for wind nowcasts generated by augmenting Rapid Update Cycle (RUC) wind forecasts with near-real-time aircraft reports using the Integrated Terminal Weather System (ITWS) gridded winds algorithm. ...

Rodney E. Cole; Steve M. Green; Matt R. Jardin

2000-08-01T23:59:59.000Z

59

Real-time Java has become already real  

Science Conference Proceedings (OSTI)

Enhanced complexity of the designed real-time computer systems requires that the developers seek for efficient methods and tools to solve the posed problems. The most obvious and simple approach is to employ technologies that have demonstrated their ...

S. N. Zyl'

2011-05-01T23:59:59.000Z

60

Real time estimation of Bayesian networks  

Science Conference Proceedings (OSTI)

For real time evaluation of a Bayesian network when there is not sufficient time to obtain an exact solution, a guaranteed response time, approximate solution is required. It is shown that non traditional methods utilizing estimators based on an archive ...

Robert L. Welch

1996-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

A Survey of Utility Experience with Real Time Pricing  

E-Print Network (OSTI)

with Real Time Pricing Xcel Energy (Public Service Companywith Real Time Pricing Xcel Energy, MDC (MinnesotaUtilities Division). 2001. “Xcel Energy’s Real-Time Pricing

Barbose, Galen; Goldman, Charles; Neenan, Bernie

2004-01-01T23:59:59.000Z

62

High-Level Real-Time Concurrency  

E-Print Network (OSTI)

The primary goal of all real-time systems is predictability. Achieving this goal requires all levels of the system to be well de ned and have a xed worst-case execution time. These needs have resulted in the creation of overly restrictive commercial real-time systems providing only ad-hoc scheduling facilities and basic concurrent functionality. Ad-hoc scheduling makes developing, verifying, and maintaining a real-time system extremely dicult and time consuming. Basic concurrent functionality forces programmers to develop complex concurrent programs without the aid of high-level concurrency features.

Ashif S. Harji; C Ashif S. Harji

2000-01-01T23:59:59.000Z

63

JAVA & Parallelism/Real-time systems  

E-Print Network (OSTI)

Windowing Toolkit (AWT) in a memory-efficient way. JAVA Application Environment (JAE) Support enables the same applets and applications to run on other servers or platforms running the JAVA Virtual Machine. CHAPTER 2 Embedded and Real-Time JAVA According to the designers at Sun Microsystems, is JAVA also suitable for Embedded or Real-Time systems. Before proceeding further it is worth trying to define the phrase `real-time system' more precisely. 2.1 Definition of a real-time system There are many interpretations of the exact nature of a real-time system; however, they all have in common the notion of response time, the time taken for the system to generate output from some associated input. The Oxford Dictionary of Computing [48] gives the following definition of a real-time system. A real-time system is... Any system in which the time at which output is produced is significant. This is usually because the input corresponds to some movement in the physical world, and the output ha...

D. F. Nooren

1998-01-01T23:59:59.000Z

64

How are Real Grids Used? The Analysis of Four Grid Traces and Its Implications  

Science Conference Proceedings (OSTI)

The Grid computing vision promises to provide the needed platform for a new and more demanding range of applications. For this promise to become true, a number of hurdles, including the design and deployment of adequate resource management and information ...

Alexandru Iosup; Catalin Dumitrescu; Dick Epema; Hui Li; Lex Wolters

2006-09-01T23:59:59.000Z

65

Real time sensor for therapeutic radiation delivery  

DOE Patents (OSTI)

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.

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

1998-01-06T23:59:59.000Z

66

Real time sensor for therapeutic radiation delivery  

DOE Patents (OSTI)

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.

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

1998-01-01T23:59:59.000Z

67

Property:Real-Time | Open Energy Information  

Open Energy Info (EERE)

Real-Time Real-Time Jump to: navigation, search Property Name Real-Time Property Type String Pages using the property "Real-Time" Showing 25 pages using this property. (previous 25) (next 25) 1 1.5-ft Wave Flume Facility + No + 10-ft Wave Flume Facility + No + 11-ft Wave Flume Facility + No + 2 2-ft Flume Facility + No + 3 3-ft Wave Flume Facility + No + 5 5-ft Wave Flume Facility + No + 6 6-ft Wave Flume Facility + No + A Alden Large Flume + Yes + Alden Small Flume + Yes + Alden Tow Tank + Yes + Alden Wave Basin + Yes + B Breakwater Research Facility + No + Bucknell Hydraulic Flume + No + C Carderock 2-ft Variable Pressure Cavitation Water Tunnel + No + Carderock 3-ft Variable Pressure Cavitation Water Tunnel + No + Carderock Circulating Water Channel + No +

68

Real Time Energy Pricing Web Services Implementation  

NLE Websites -- All DOE Office Websites (Extended Search)

Real Time Energy Pricing Web Services Implementation Speaker(s): Jim Boch Kim McCaffrey Robert Nawy Date: December 15, 2010 - 12:00pm Location: 90-3122 Seminar HostPoint of...

69

Real-Time Mesoscale Prediction on workstations  

Science Conference Proceedings (OSTI)

Experience in performing real-time mesoscale numerical prediction forecasts using the Regional Atmospheric Modeling System (RAMS) over Colorado for a winter season on high-performance workstations is summarized. Performance evaluation is done for ...

William R. Cotton; Gregory Thompson; Paul W. Mieike Jr.

1994-03-01T23:59:59.000Z

70

Real time PCR measurement by fluorescence anisotropy  

E-Print Network (OSTI)

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 ...

Crane, Bryan Lee, 1976-

2005-01-01T23:59:59.000Z

71

Real-time rendering systems in 2010  

Science Conference Proceedings (OSTI)

We present a case for future real-time rendering systems that support non-physically-correct global illumination techniques by using ray tracing visibility algorithms, by integrating scene management with rendering, and by executing on general-purpose ...

William R. Mark; Donald Fussell

2005-07-01T23:59:59.000Z

72

Precision Timing for Smart Grid Systems  

Science Conference Proceedings (OSTI)

... how new features and requirements for time synchronization can impact the performance of next-generation power distribution applications. ...

2013-04-29T23:59:59.000Z

73

A Real-Time Simulator for Doubly Fed Induction Generator based Wind Turbine Applications  

E-Print Network (OSTI)

Abstract- This paper describes a real-time simulator of wind turbine generator system suitable for controller design and tests. The simulated generator is a grid-connected doubly fed induction machine with back-to-back PWM voltage source vector control of the rotor. The simulator is based on RT-LAB real-time simulation platform that allows for easy model-to-real-time-target design from Simulink models. The paper puts special emphasis on the fixed-step simulation problematic of kHz-range PWM inverter drives and the techniques used in the real-time simulator to accurately simulate those drives.

Christian Dufour; Jean Bélanger

2004-01-01T23:59:59.000Z

74

Real-time var control by SCADA  

SciTech Connect

This paper outlines the operation and advantages of the SCADA capacitor control called CAPCON, developed by the Virginia Electric and Power Company (Virginia Power). CAPCON is used to control vars system-wide by switching substation capacitor banks based on real-time var and voltage data instead of the traditional time clock method.

Girotti, T.B.; Tweed, N.B.; Houser, N.R. (Virginia Power Co., Richmond, VA (USA))

1990-02-01T23:59:59.000Z

75

Axial tomography from digitized real time radiography  

SciTech Connect

Axial tomography from digitized real time radiographs provides a useful tool for industrial radiography and tomography. The components of this system are: x-ray source, image intensifier, video camera, video line extractor and digitizer, data storage and reconstruction computers. With this system it is possible to view a two dimensional x-ray image in real time at each angle of rotation and select the tomography plane of interest by choosing which video line to digitize. The digitization of a video line requires less than a second making data acquisition relatively short. Further improvements on this system are planned and initial results are reported.

Zolnay, A.S.; McDonald, W.M.; Doupont, P.A.; McKinney, R.L.; Lee, M.M.

1985-01-18T23:59:59.000Z

76

Axial Tomography from Digitized Real Time Radiography  

DOE R&D Accomplishments (OSTI)

Axial tomography from digitized real time radiographs provides a useful tool for industrial radiography and tomography. The components of this system are: x-ray source, image intensifier, video camera, video line extractor and digitizer, data storage and reconstruction computers. With this system it is possible to view a two dimensional x-ray image in real time at each angle of rotation and select the tomography plane of interest by choosing which video line to digitize. The digitization of a video line requires less than a second making data acquisition relatively short. Further improvements on this system are planned and initial results are reported.

Zolnay, A. S.; McDonald, W. M.; Doupont, P. A.; McKinney, R. L.; Lee, M. M.

1985-01-18T23:59:59.000Z

77

A Survey of Utility Experience with Real Time Pricing  

E-Print Network (OSTI)

Response to Electricity Real-Time Prices: Short Run and Longat the prevailing real time price. Because only marginalService Rate RTP: Real Time Price Rate Experimental Day

Barbose, Galen; Goldman, Charles; Neenan, Bernie

2004-01-01T23:59:59.000Z

78

Wealth Transfers from Implementing Real-Time Retail Electricity Pricing  

E-Print Network (OSTI)

who are charged real-time prices. I discuss the politicalif customers exhibit real-time price elasticities of -0.1, Iit sees the actual real-time electricity price and responds.

Borenstein, Severin

2005-01-01T23:59:59.000Z

79

Real time monitoring in web telerobotics  

Science Conference Proceedings (OSTI)

There is a growing need for humans to perform complex remote operations and to extend the intelligence and experience of experts to distant applications. A blending of human intelligence, modern information technology, remote control, and intelligent ... Keywords: TCP/IP, UDP, control, internet, monitoring, real-time, telerobotics, web

Ionut Resceanu; Marius Niculescu; Cristina Pana

2008-07-01T23:59:59.000Z

80

Efficient real-time divisible load scheduling  

Science Conference Proceedings (OSTI)

Providing QoS and performance guarantees to arbitrarily divisible loads has become a significant problem for many cluster-based research computing facilities. While progress is being made in scheduling arbitrarily divisible loads, current approaches ... Keywords: Arbitrarily divisible loads, Cluster computing, Real-time computing, Scheduling efficiency

Anwar Mamat; Ying Lu; Jitender Deogun; Steve Goddard

2012-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Towards real-time dynamic spectrum auctions  

Science Conference Proceedings (OSTI)

In this paper, we propose a low-complexity auction framework to distribute spectrum in real-time among a large number of wireless users with dynamic traffic. Our design consists of a compact and highly expressive bidding format, two pricing models to ... Keywords: Algorithms, Auctions, Spectrum

Sorabh Gandhi; Chiranjeeb Buragohain; Lili Cao; Haitao Zheng; Subhash Suri

2008-03-01T23:59:59.000Z

82

Real-time signal processing IV  

Science Conference Proceedings (OSTI)

The following topics were dealt with: parallel computation algorithms and architectures; very high-speed integrated circuit processing; multiple processor systems; real-time signal processing technologies and applications. 48 papers were presented, 40 of which are published in full in the present proceedings. Abstracts of individual papers can be found under the relevant classification codes in this or other issues.

Not Available

1981-01-01T23:59:59.000Z

83

Real-time individualized virtual humans  

Science Conference Proceedings (OSTI)

This tutorial will present the latest techniques to model fast individualized animatable virtual humans for Real-Time applications. As a human is composed of a head and a body, we will analyze how these two parts can be modeled and globally animated ...

Nadia Magnenat-Thalmann; Daniel Thalmann

2008-12-01T23:59:59.000Z

84

Real time video streaming over heterogeneous networks  

Science Conference Proceedings (OSTI)

Technological advances allow handheld devices to be equipped with faster processors and wireless interfaces, making the performance comparable to laptop Computers. In this paper, we describe real-time video streaming over heterogeneous networks namely ... Keywords: GPRS-EDGE, IEEE802.11, IETF, MPEG-4, PSS, RTCP, RTP, RTSP, bluetooth, performance, piconet, quality of service, video streaming, wireless LANs

Mohammed A. Qadeer; Rehan Ahmad; Mohd Siddique Khan; Tauseef Ahmad

2009-02-01T23:59:59.000Z

85

User customizable real-time fur  

Science Conference Proceedings (OSTI)

Recent advances in real-time fur rendering have enabled the development of more realistic furry characters. In this sketch, we outline a number of advances to the shell and fin based fur rendering technique by Lengyel et al [2001] using the pixel and ...

John Isidoro; Jason L. Mitchell

2002-07-01T23:59:59.000Z

86

Towards a Scalable and Reliable Real Time In-Network Data Analysis Infrastructure  

Science Conference Proceedings (OSTI)

The smart grid applications requires real time analysis, response within the order of milliseconds and high-reliability because of the mission critical structure of the power grid system. The only way to satisfy these requirements is in network data analysis and build-in redundancy routing for failures. To achieve this, we propose a data dissemination system that builds routes using network flow algorithms, have in network processing of the data and utilize data encoding to cope with high latencies.

Ciraci, Selim; Yin, Jian

2011-12-01T23:59:59.000Z

87

A Survey of Utility Experience with Real Time Pricing  

E-Print Network (OSTI)

Survey of Utility Experience with Real Time Pricing List ofUtility Experience with Real Time Pricing Table of Contents Acknowledgements iii Table of Contents..v List

Barbose, Galen; Goldman, Charles; Neenan, Bernie

2004-01-01T23:59:59.000Z

88

Multi-Criteria Optimisation using Past, Real Time and Predictive...  

NLE Websites -- All DOE Office Websites (Extended Search)

Multi-Criteria Optimisation using Past, Real Time and Predictive Performance Benchmarks Title Multi-Criteria Optimisation using Past, Real Time and Predictive Performance...

89

Real-Time Chemical Imaging of Bacterial Biofilm Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-Time Chemical Imaging of Bacterial Biofilm Development Real-Time Chemical Imaging of Bacterial Biofilm Development Print Wednesday, 25 August 2010 00:00 Scientists have...

90

Appendix C: California ISO Real Time Voltage Security Assessment...  

NLE Websites -- All DOE Office Websites (Extended Search)

C: California ISO Real Time Voltage Security Assessment (VSA) Prototype Functional SpecificationsPrototype Development Title Appendix C: California ISO Real Time Voltage Security...

91

Appendix B: California ISO Real Time Voltage Security Assessment...  

NLE Websites -- All DOE Office Websites (Extended Search)

B: California ISO Real Time Voltage Security Assessment (VSA) Summary Report Title Appendix B: California ISO Real Time Voltage Security Assessment (VSA) Summary Report Publication...

92

Appendix A: California ISO Real Time Voltage Security Assessment...  

NLE Websites -- All DOE Office Websites (Extended Search)

A: California ISO Real Time Voltage Security Assessment (VSA) Project: Summary of Survey Results on Methodologies for use in Real-Time Voltage Security Assessment Title Appendix A:...

93

Definition: Real-Time Load Transfer | Open Energy Information  

Open Energy Info (EERE)

Real-time load transfer is achieved through real-time feeder reconfiguration and optimization to relieve load on equipment, improve asset utilization, improve distribution...

94

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

NLE Websites -- All DOE Office Websites (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...

95

Real time gamma-ray signature identifier  

DOE Patents (OSTI)

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.

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

96

Low-Power Design for Real-Time Systems  

Science Conference Proceedings (OSTI)

Real-time Systems often are located in the special environments where the power consumption is a big concern. Upon presence of timing constraints, the low power design on the real-time systems has significant impact on the performance as well as the ... Keywords: embedded system, instruction set, low power design, real time operating system, real time scheduling

Sheng-Tzong Cheng; Chia-Mei Chen; Jing-Wen Hwang

1998-09-01T23:59:59.000Z

97

October 2009Rethinking Real Time Electricity Pricing  

E-Print Network (OSTI)

Most US consumers are charged a near-constant retail price for electricity, despite substantial hourly variation in the wholesale market price. This paper evaluates the …rst program to expose residential consumers to hourly real time pricing (RTP). I …nd that enrolled households are statistically signi…cantly price elastic and that consumers responded by conserving energy during peak hours, but remarkably did not increase average consumption during o¤-peak times. Welfare analysis suggests that program households were not su ¢ ciently price elastic to generate e ¢ ciency gains that substantially outweigh the estimated costs of the advanced electricity meters required to observe hourly consumption. Although in electricity pricing, congestion pricing, and many other settings, economists’intuition is that prices should be aligned with marginal costs, residential RTP may provide an important real-world example of a situation where this is not currently welfare-enhancing given contracting or information costs.

Hunt Allcott; Hunt Allcott; Bill Hogan; Erich Muehlegger; Larry Katz; Erin Mansur; Sendhil Mullainathan; Paul Niehaus; Chris Nosko; Ariel Pakes; Dave Rapson; Rob Stavins; Frank Wolak

2009-01-01T23:59:59.000Z

98

CRTF Real-Time Aperture Flux system  

SciTech Connect

The Real-Time Aperture Flux system (TRAF) is a test measurement system designed to determine the input power/unit area (flux density) during solar experiments conducted at the Central Receiver Test Facility, Sandia National Laboratories, Albuquerque, New Mexico. The RTAF is capable of using both thermal sensors and photon sensors to determine the flux densities in the RTAF measuring plane. These data are manipulated in various ways to derive input power and flux density distribution to solar experiments.

Davis, D.B.

1980-01-01T23:59:59.000Z

99

Real-time static voltage scaling on multiprocessors  

Science Conference Proceedings (OSTI)

We propose a real-time static voltage scaling (RT-SVS) technique called T-L plane transforming, which is an extension of LLREF, an optimal real-time scheduling algorithm for multiprocessor systems. We present two RT-SVS algorithms for different types ... Keywords: energy consumption, multiprocessor systems, real-time scheduling, real-time voltage scaling

Kenji Funaoka; Shinpei Kato; Nobuyuki Yamasaki

2007-11-01T23:59:59.000Z

100

Real-time deferrable load control: handling the uncertainties of renewable generation  

Science Conference Proceedings (OSTI)

Real-time demand response is essential for handling the uncertainties of renewable generation. Traditionally, demand response has been focused on large industrial and commercial loads, however it is expected that a large number of small residential loads ... Keywords: deferrable load control, demand response, model predictive control, smart grid

Lingwen Gan, Adam Wierman, Ufuk Topcu, Niangjun Chen, Steven H. Low

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

A Description of the Air Force Real-Time Nephanalysis Model  

Science Conference Proceedings (OSTI)

The Air Force Global Weather Central (AFGWC) Real-Time Nephanalysis (RTNEPH) is an automated cloud model that produces a 48-km gridded analysis of cloud amount, cloud type, and cloud height. Its primary input is imagery from polar-orbiting ...

Thomas M. Hamill; Robert P. D'Entremont; James T. Buntin

1992-06-01T23:59:59.000Z

102

Real-time power system analysis: Feasibility and critical technologies  

Science Conference Proceedings (OSTI)

Modern electrical grids face increasing demands to serve new or unusual loads, to integrate unconventional new resources, and to transmit power in unforeseen ways. These expanding demands will require utilities to operate existing systems closer to steady-state limits, thus increasing the performance requirements of operation and control systems. In this paper we use the challenges posed by power system stability analysis to motivate a discussion of the technologies required to advance the state-of-the-art in real-time power system control. We consider the computational requirements of system stability analysis techniques (transient simulation, eigenanalysis, time-domain fitting, and frequency-response analysis). Additional requirements are imposed by the necessity that the computational results support either human or automated decision making. We then address the role that critical computer and information technologies must play in addressing these needs. Our emphasis is on high performance computing, where we consider both hardware issues and algorithmic requirements. Data management, user interface, visualization, and expert system technologies are also discussed. We conclude by suggesting elements of a strategic plan for creating the next generation of computer tools for power system analysis, and for their use in real-time control applications. 18 refs.

Pearson, E.W.; Trudnowski, D.J. (Battelle Pacific Northwest Lab., Richland, WA (United States)); Hauer, J.F.; Watkins, D.S. (USDOE Bonneville Power Administration, Portland, OR (United States))

1991-11-01T23:59:59.000Z

103

Residential Real-time Price Response Simulation  

Science Conference Proceedings (OSTI)

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.

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

2011-10-10T23:59:59.000Z

104

Repsol Cartagena Utilities Real Time Optimization -- A Success Story  

E-Print Network (OSTI)

"In 1998 Honeywell Hi-Spec Solutions successfully implemented a Utilities Optimization system at Repsol's Cartagena Spain Refinery Complex. The Utilities Optimization System is implemented using Honeywell's Hi-Spec Solutions ProfitMax R100 system for Real Time Optimization (RTO) which runs on an NT-based workstation. ProfitMax uses the NOVA modeling system from DOT Products Inc. for non-linear modeling and optimization. Data is supplied through Uniformance PHD, Honeywell Hi-Spec Solutions' real time database. The cogeneration system is controlled using Honeywell's IDC 3000 system. The Utility System at Repsol Cartagena refinery is a cogeneration system that supplies both electricity and steam to the site. The surplus electricity is exported to the National grid. The system consists of the following: • Gas Turbine and Heat Recovery Steam Generator • Four fired boilers • Four steam headers at various pressures • Three Back-Pressure/Condensing steam turbo-generators • Plant condensate system • Fuel gas collection and distribution system • Process steam producers and consumers • Numerous dual drivers (steam/electric) for various plant loads "

Piccolo, M.; Shyr, S.

1999-05-01T23:59:59.000Z

105

Initial Studies Toward Real-Time Transmission Path Rating  

Science Conference Proceedings (OSTI)

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.

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

2012-07-26T23:59:59.000Z

106

Real-time scheduling with regenerative energy  

E-Print Network (OSTI)

This paper investigates real-time scheduling in a system whose energy reservoir is replenished by an environmental power source. The execution of tasks is deemed primarily energy-driven, i.e., a task may only respect its deadline if its energy demand can be satisfied early enough. Hence, a useful scheduling policy should account for properties of the energy source, capacity of the energy storage as well as power dissipation of the single tasks. We show that conventional scheduling algorithms (like e.g. EDF) are not suitable for this scenario. Based on this motivation, we state and prove optimal scheduling algorithms that jointly handle constraints from both energy and time domain. Furthermore, an offline schedulability test for a set of periodic or even bursty tasks is presented. Finally, we validate the proposed theory by means of simulation and compare our algorithms with the classical Earliest Deadline First Algorithm. 1.

C. Moser; D. Brunelli; L. Thiele; L. Benini

2006-01-01T23:59:59.000Z

107

Efficient scheduling of soft real-time applications on multiprocessors  

Science Conference Proceedings (OSTI)

In soft real-time applications, tasks are allowed to miss their deadlines. Thus, less-costly scheduling algorithms can be used at the price of occasional violations of timing constraints. This may be acceptable if reasonable tardiness bounds (i.e., bounds ... Keywords: Fairness, multiprocessors, quality-of-service, real-time scheduling, soft real-time applications, tardiness

Anand Srinivasan; James H. Anderson

2005-04-01T23:59:59.000Z

108

Real-TIme Raman Gas Composition Analyzer  

NLE Websites -- All DOE Office Websites (Extended Search)

Analyzer Analyzer Opportunity The Department of Energy's National Energy Technology Laboratory (NETL) is seeking collaborative research partners interested in implementing United States Provisional Patent Application entitled "Gas Sensing System Employing Raman Scattering". Disclosed in this application is a gas analyzing sensor that characterizes gaseous fuel, exhaust gases, or other process gas streams. The sensor reports concentrations of all majority gases at better than 0.3% accuracy in 1 second or less, and can be used for real-time gas analysis and system control. The sensor relies on novel techniques to enhance usually weak spontaneous Raman emissions from sample gases, enabling the application of Raman spectroscopy to rapid gas analysis. No commercially available sensor or sensing

109

Optimal, real-time control--colliders  

Science Conference Proceedings (OSTI)

With reasonable definitions, optimal control is possible for both classical and quantal systems with new approaches called PISC(Parallel) and NISC(Neural) from analogy with RISC (Reduced Instruction Set Computing). If control equals interaction, observation and comparison to some figure of merit with interaction via external fields, then optimization comes from varying these fields to give design or operating goals. Structural stability can then give us tolerance and design constraints. But simulations use simplified models, are not in real-time and assume fixed or stationary conditions, so optimal control goes far beyond convergence rates of algorithms. It is inseparable from design and this has many implications for colliders. 12 refs., 3 figs.

Spencer, J.E.

1991-05-01T23:59:59.000Z

110

Real time speech formant analyzer and display  

DOE Patents (OSTI)

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.

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

1987-02-03T23:59:59.000Z

111

FUTURE POWER GRID INITIATIVE Real-time High-Performance  

E-Print Network (OSTI)

mathematical models, next-generation simulation and analytics capabilities for the power November 2012 PNNL-SA-90011 Peter Hui Pacific Northwest National Laboratory (509) 372-6414 peter.hui@pnnl.gov ABOUT FPGI Infrastructure Operations Center (EIOC), the Pacific Northwest National Laboratory's (PNNL) national electric

112

Real-Time Precipitation Estimation Based on Index Station Percentiles  

Science Conference Proceedings (OSTI)

Operational hydrologic models are typically calibrated using meteorological inputs derived from retrospective station data that are commonly not available in real time. Inconsistencies between the calibration and (generally sparser) real-time ...

Qiuhong Tang; Andrew W. Wood; Dennis P. Lettenmaier

2009-02-01T23:59:59.000Z

113

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

E-Print Network (OSTI)

. Query Terms: the terms as entered by the user. Key concepts for search (i.e., the process of a searcher. 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

Jansen, James

114

Real time reactive programming in lucid enriched with contexts  

Science Conference Proceedings (OSTI)

We present a synchronous approach to real-time reactive programming in Lucid enriched with contexts as first class objects. The declarative intensional approach allows real-time reactive programs to manipulate both events and state-based representations ... Keywords: contexts, formal verification, intensional programming, real-time reactive programming

Kaiyu Wan; Vasu Alagar; Joey Paquet

2004-09-01T23:59:59.000Z

115

Optimal Real-time Dispatch for Integrated Energy Systems  

E-Print Network (OSTI)

In these figures the real-time price is plotted on the rightto 6:00 PM 7.2.4.3 Real-time Prices City specific hourlyIn these figures the real-time price is plotted on the right

Firestone, Ryan Michael

2007-01-01T23:59:59.000Z

116

Platform-independent design for embedded real-time systems  

Science Conference Proceedings (OSTI)

With the increasing complexity of the emerging embedded real-time systems, traditional design approaches can not provide sufficient support for the development of these systems anymore. They especially lack the ability to trace and analyse real-time ... Keywords: platform-independent, real-time, system design

Jinfeng Huang; Jeroen P. M. Voeten; Andre Ventevogel; Leo van Bokhoven

2004-01-01T23:59:59.000Z

117

Error computation for predictable real-time software synthesis  

Science Conference Proceedings (OSTI)

Synthesizing an implementation from a model in a predictable way is one of the major challenges in real-time system design. In our previous work we addressed this problem by generating in real-time an execution path through a model and by synchronizing ... Keywords: error computation, predictable design, property prediction, real-time systems

Jeroen Voeten; Oana Florescu; Jinfeng Huang; Henk Corporaal

2011-04-01T23:59:59.000Z

118

REAL TIME SYSTEM OPERATIONS 2006-2007  

E-Print Network (OSTI)

Navin Bhatt (American Electric Power) Participants of theStability Analysis”, Electric Power System Research, Vol.  and M.  Skowronski, Electric Power Group.  2003.  ?Real?

Eto, Joseph H.

2008-01-01T23:59:59.000Z

119

Detection and tracking of driver's hands in real time  

Science Conference Proceedings (OSTI)

In this paper a complete driver's hands detection and tracking system suitable for working in real time conditions has been developed. The proposed system has been successfully tested in close-real world conditions in different scenarios on a very realistic ... Keywords: automotive application, image processing, real time, tracking

Raúl Crespo; Isaac Martín De Diego; Cristina Conde; Enrique Cabello

2010-11-01T23:59:59.000Z

120

A Survey of Utility Experience with Real Time Pricing  

E-Print Network (OSTI)

and access to hourly energy usage data .. 26access to their hourly energy usage data on a real-time orfor Access to hourly energy usage data on a real- price

Barbose, Galen; Goldman, Charles; Neenan, Bernie

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Test Cases for Wind Power Plant Dynamic Models on Real-Time Digital Simulator: Preprint  

DOE Green Energy (OSTI)

The objective of this paper is to present test cases for wind turbine generator and wind power plant models commonly used during commissioning of wind power plants to ensure grid integration compatibility. In this paper, different types of wind power plant models based on the Western Electricity Coordinating Council Wind Generator Modeling Group's standardization efforts are implemented on a real-time digital simulator, and different test cases are used to gauge their grid integration capability. The low-voltage ride through and reactive power support capability and limitations of wind turbine generators under different grid conditions are explored. Several types of transient events (e.g., symmetrical and unsymmetrical faults, frequency dips) are included in the test cases. The differences in responses from different types of wind turbine are discussed in detail.

Singh, M.; Muljadi, E.; Gevorgian, V.

2012-06-01T23:59:59.000Z

122

Scalable Distributed Automation System: Scalable Real-time Decentralized Volt/VAR Control  

SciTech Connect

GENI Project: Caltech is developing a distributed automation system that allows distributed generators—solar panels, wind farms, thermal co-generation systems—to effectively manage their own power. To date, the main stumbling block for distributed automation systems has been the inability to develop software that can handle more than 100,000 distributed generators and be implemented in real time. Caltech’s software could allow millions of generators to self-manage through local sensing, computation, and communication. Taken together, localized algorithms can support certain global objectives, such as maintaining the balance of energy supply and demand, regulating voltage and frequency, and minimizing cost. An automated, grid-wide power control system would ease the integration of renewable energy sources like solar power into the grid by quickly transmitting power when it is created, eliminating the energy loss associated with the lack of renewable energy storage capacity of the grid.

None

2012-03-01T23:59:59.000Z

123

High-speed real-time multi-rate simulation  

Science Conference Proceedings (OSTI)

Recent research has focused on developing techniques that use digital signal processors (DSPs) and field-programmable gate arrays (FPGAs) to support real-time simulation with frame times of a few microseconds or less. These techniques can be used ... Keywords: FPGA, distributed, high-speed, multi-rate, real-time

Roy Crosbie; Dale Word; John Zenor; Richard Bednar; Wilfred Ghonsalves; Narain Hingorani

2009-07-01T23:59:59.000Z

124

Time Synchronization Attack in Smart Grid-Part I: Impact and Analysis  

E-Print Network (OSTI)

Many operations in power grids, such as fault detection and event location estimation, depend on precise timing information. In this paper, a novel Time Synchronization Attack (TSA) is proposed to attack the timing information in smart grid. Since many applications in smart grid utilize synchronous measurements and most of the measurement devices are equipped with global positioning system (GPS) for precise timing, it is highly probable to attack the measurement system by spoofing the GPS. The effectiveness of TSA is demonstrated for three applications of phasor measurement unit (PMU) in smart grid, namely transmission line fault detection, voltage stability monitoring and event locationing. The validity of TSA is demonstrated by numerical simulations.

Zhang, Zhenghao; Dimitrovski, Aleksandar D; Li, Husheng

2012-01-01T23:59:59.000Z

125

Time Stamp Attack in Smart Grid: Physical Mechanism and Damage Analysis  

E-Print Network (OSTI)

Many operations in power grids, such as fault detection and event location estimation, depend on precise timing information. In this paper, a novel time stamp attack (TSA) is proposed to attack the timing information in smart grid. Since many applications in smart grid utilize synchronous measurements and most of the measurement devices are equipped with global positioning system (GPS) for precise timing, it is highly probable to attack the measurement system by spoofing the GPS. The effectiveness of TSA is demonstrated for three applications of phasor measurement unit (PMU) in smart grid, namely transmission line fault detection, voltage stability monitoring and event locationing.

Gong, Shuping; Li, Husheng; Dimitrovski, Aleksandar D

2012-01-01T23:59:59.000Z

126

Adaptive Real-Time Methodology for Optimizing Energy-Efficient...  

NLE Websites -- All DOE Office Websites (Extended Search)

Email Adaptive Real-Time Methodology for Optimizing Energy-Efficient Computing Dynamic voltage and frequency scaling (DVFS) is an effective way to reduce energy and power...

127

A Survey of Utility Experience with Real Time Pricing  

E-Print Network (OSTI)

CA. November 15. Electric Power Research Institute (EPRI).with Real Time Pricing Electric Power Research Institute (Electric) 67 American Electric Power (Public Service

Barbose, Galen; Goldman, Charles; Neenan, Bernie

2004-01-01T23:59:59.000Z

128

EIA releases energy infrastructure map with real-time ...  

U.S. Energy Information Administration (EIA)

With peak hurricane season approaching, the U.S. Energy Information Administration (EIA) is introducing interactive maps that combine real-time data ...

129

Real-Time Chemical Imaging of Bacterial Biofilm Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-Time Chemical Imaging of Bacterial Biofilm Development Print Scientists have developed a robust and label-free method to probe the chemical underpinnings of developing...

130

Real-Time Optimization Strategies for Building Systems  

E-Print Network (OSTI)

Jul 2, 2011 ... Abstract: We propose real-time optimization strategies for energy ... reductions of energy intensity compared with traditional strategies.

131

Low Dose Radiation Research Program: Real-Time Molecular Study...  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-Time Molecular Study of Bystander Effects Using Imaging and Nano-Particle Optics Mohan Natarajan University of Texas Health Science Center Why this Project? To develop...

132

Sensor Technology for Real Time Monitoring of Molten Salt ...  

Science Conference Proceedings (OSTI)

Presentation Title, Sensor Technology for Real Time Monitoring of Molten Salt Electrolytes During Nuclear Fuel Electrorefining. Author(s), Michael F. Simpson, ...

133

Method for real-time analysis of biosensor data  

Disclosure Number 200501550 Technology Summary This invention is a method for real-time rapid analysis of data that is collected by biosensors or ...

134

Towards a High Quality Real-Time Graphics Pipeline.  

E-Print Network (OSTI)

??Modern graphics hardware pipelines create photorealistic images with high geometric complexity in real time. The quality is constantly improving and advanced techniques from feature film… (more)

Munkberg, Jacob

2011-01-01T23:59:59.000Z

135

Vector Graphics for Real-time 3D Rendering.  

E-Print Network (OSTI)

??Algorithms are presented that enable the use of vector graphics representations of images in texture maps for 3D real time rendering. Vector graphics images are… (more)

Qin, Zheng

2009-01-01T23:59:59.000Z

136

Tracking Living Cells as They Differentiate in Real Time  

NLE Websites -- All DOE Office Websites (Extended Search)

at the ALS, developed a new technique for monitoring protein phosphorylation inside living mammalian cells, enabling them to follow cellular chemical changes in real time,...

137

Real Time Flux Control in PM Motors  

SciTech Connect

Significant research at the Oak Ridge National Laboratory (ORNL) Power Electronics and Electric Machinery Research Center (PEEMRC) is being conducted to develop ways to increase (1) torque, (2) speed range, and (3) efficiency of traction electric motors for hybrid electric vehicles (HEV) within existing current and voltage bounds. Current is limited by the inverter semiconductor devices' capability and voltage is limited by the stator wire insulation's ability to withstand the maximum back-electromotive force (emf), which occurs at the upper end of the speed range. One research track has been to explore ways to control the path and magnitude of magnetic flux while the motor is operating. The phrase, real time flux control (RTFC), refers to this mode of operation in which system parameters are changed while the motor is operating to improve its performance and speed range. RTFC has potential to meet an increased torque demand by introducing additional flux through the main air gap from an external source. It can augment the speed range by diverting flux away from the main air gap to reduce back-emf at high speeds. Conventional RTFC technology is known as vector control [1]. Vector control decomposes the stator current into two components; one that produces torque and a second that opposes (weakens) the magnetic field generated by the rotor, thereby requiring more overall stator current and reducing the efficiency. Efficiency can be improved by selecting a RTFC method that reduces the back-emf without increasing the average current. This favors methods that use pulse currents or very low currents to achieve field weakening. Foremost in ORNL's effort to develop flux control is the work of J. S. Hsu. Early research [2,3] introduced direct control of air-gap flux in permanent magnet (PM) machines and demonstrated it with a flux-controlled generator. The configuration eliminates the problem of demagnetization because it diverts all the flux from the magnets instead of trying to oppose it. It is robust and could be particularly useful for PM generators and electric vehicle drives. Recent efforts have introduced a brushless machine that transfers a magneto-motive force (MMF) generated by a stationary excitation coil to the rotor [4]. Although a conventional PM machine may be field weakened using vector control, the air-gap flux density cannot be effectively enhanced. In Hsu's new machine, the magnetic field generated by the rotor's PM may be augmented by the field from the stationery excitation coil and channeled with flux guides to its desired destination to enhance the air-gap flux that produces torque. The magnetic field can also be weakened by reversing the current in the stationary excitation winding. A patent for advanced technology in this area is pending. Several additional RTFC methods have been discussed in open literature. These include methods of changing the number of poles by magnetizing and demagnetizing the magnets poles with pulses of current corresponding to direct-axis (d-axis) current of vector control [5,6], changing the number of stator coils [7], and controlling the air gap [8]. Test experience has shown that the magnet strengths may vary and weaken naturally as rotor temperature increases suggesting that careful control of the rotor temperature, which is no easy task, could yield another method of RTFC. The purpose of this report is to (1) examine the interaction of rotor and stator flux with regard to RTFC, (2) review and summarize the status of RTFC technology, and (3) compare and evaluate methods for RTFC with respect to maturity, advantages and limitations, deployment difficulty and relative complexity.

Otaduy, P.J.

2005-09-27T23:59:59.000Z

138

MONOCULAR OPTICAL FLOW FOR REAL-TIME VISION SYSTEMS  

E-Print Network (OSTI)

MONOCULAR OPTICAL FLOW FOR REAL-TIME VISION SYSTEMS Stephen M. Benoit and Frank P. Ferrie TR-CIM-96 268510 FAX: 514 398-7348 Email: cim@cim.mcgill.ca #12;MONOCULAR OPTICAL FLOW FOR REAL-TIME VISION SYSTEMS

Dudek, Gregory

139

Dynamic software updates for real-time systems  

Science Conference Proceedings (OSTI)

Seamlessly updating software in running systems has recently gained momentum. Dynamically updating the software of real-time embedded systems, however, still poses numerous challenges: such systems must meet hard deadlines, cope with limited resources, ... Keywords: dynamic software update, embedded, real-time

Michael Wahler; Stefan Richter; Manuel Oriol

2009-10-01T23:59:59.000Z

140

A timeband framework for modelling real-time systems  

Science Conference Proceedings (OSTI)

Complex real-time systems must integrate physical processes with digital control, human operation and organisational structures. New scientific foundations are required for specifying, designing and implementing these systems. One key challenge is to ... Keywords: Cyber physical, Modelling, Real-time systems

Alan Burns; Ian J. Hayes

2010-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Analysis of Wind Generation System by Real-Time Simulation  

Science Conference Proceedings (OSTI)

Due to the demand of green energy, the number of wind turbines installed has been increased drastically worldwide. Comparing with the traditional utility generation systems, the dynamic characteristic and response of wind farms are totally different. ... Keywords: Doubly-fed induction generator, real-time simulation, PC cluster-based real-time simulator, wind farm

H. C. Su; G. W. Chang; H. M. Huang; K. K. Jen; G. C. Chung; G. Z. Wu

2012-06-01T23:59:59.000Z

142

Real-time deformable models for surgery simulation: a survey  

Science Conference Proceedings (OSTI)

Simulating the behaviour of elastic objects in real time is one of the current objectives of computer graphics. One of its fields of application lies in virtual reality, mainly in surgery simulation systems. In computer graphics, the models used for ... Keywords: Animation, Deformable model, Elasticity, Real time, Surgery simulation

U. Meier; O. López; C. Monserrat; M. C. Juan; M. Alcañiz

2005-03-01T23:59:59.000Z

143

Real-time Remote Sensing of Snowmobiles Emissions at  

E-Print Network (OSTI)

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 Summary In the winter of 1999, the University of Denver conducted a remote sensing study at Yellowstone

Denver, University of

144

Neural Networks for Real-Time Traffic Signal Control  

Science Conference Proceedings (OSTI)

Real-time traffic signal control is an integral part of the urban traffic control system, and providing effective real-time traffic signal control for a large complex traffic network is an extremely challenging distributed control problem. This paper ... Keywords: Distributed control, hybrid model, neural control, online learning, traffic signal control

D. Srinivasan; Min Chee Choy; R. L. Cheu

2006-09-01T23:59:59.000Z

145

Matching customer requests to service offerings in real-time  

Science Conference Proceedings (OSTI)

Classic request-response Service-oriented architecture (SOA) has reached a level of maturity where SOA inspired extensions are enabling new and creative domains like the Internet of Things, real-time business or real-time Web. These new domains impose ... Keywords: SOA, complex event processing, mediation, nonfunctional properties, service selection

Marcel Tilly; Stephan Reiff-Marganiec

2011-03-01T23:59:59.000Z

146

Overhead elimination mechanisms in real-time systems  

Science Conference Proceedings (OSTI)

The OEM (Overhead Elimination Mechanism), a scheduler for finding minimal overheads with reduced context switches in real-time systems, was developed using procedural methods. Software produced by these methods has often proven to be inflexible and difficult ... Keywords: Real-time scheduling, context switches, object-oriented, procedural, rate monotonic algorithm

Ilhyun Lee; Haesun K. Lee; Narayan Debnath

2006-04-01T23:59:59.000Z

147

Towards the compositional verification of real-time UML designs  

Science Conference Proceedings (OSTI)

Current techniques for the verification of software as e.g. model checking are limited when it comes to the verification of complex distributed embedded real-time systems. Our approach addresses this problem and in particular the state explosion problem ... Keywords: embedded systems, object constraint language (OCL), pattern, real-time, unified modelling language (UML)

Holger Giese; Matthias Tichy; Sven Burmester; Wilhelm Schäfer; Stephan Flake

2003-09-01T23:59:59.000Z

148

Real-Time Camera Planning for Navigation in Virtual Environments  

Science Conference Proceedings (OSTI)

In this work, we have developed a real-time camera control module for navigation in virtual environments. With this module, the tracking motion of a third-person camera can be generated automatically to allow a user to focus on the control of an avatar. ... Keywords: Budget-based Planning, Intelligent Cam-era Control, Probabilistic Roadmap, Real-Time Camera Planning

Tsai-Yen Li; Chung-Chiang Cheng

2008-08-01T23:59:59.000Z

149

Challenge benchmarks for verification of real-time programs  

Science Conference Proceedings (OSTI)

Real-time systems, and in particular safety-critical systems, are a rich source of challenges for the program verification community as software errors can have catastrophic consequences. Unfortunately, it is nearly impossible to find representative ... Keywords: java, real-time, verification

Tomas Kalibera; Pavel Parizek; Ghaith Haddad; Gary T. Leavens; Jan Vitek

2010-01-01T23:59:59.000Z

150

List Processing in Real Time on a Serial Computer  

E-Print Network (OSTI)

A real-time list processing system is one in which the time required by each elementary list operation (CONS, CAR, CDR, RPLACA, RPLACD, EQ, and ATOM in LISP) is bounded by a (small) constant. Classical list processing ...

Baker, Henry G. Jr.

1977-04-01T23:59:59.000Z

151

Software development with real-time collaborative editing  

E-Print Network (OSTI)

This thesis presents Collabode, a web-based integrated development environment for Java. With real-time collaborative editing, multiple programmers can use Collabode to edit the same source code at the same time. Collabode ...

Goldman, Max, Ph. D. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

152

Event Order Abstraction for Parametric Real-Time System Verification  

E-Print Network (OSTI)

We present a new abstraction technique, event order abstraction (EOA), for parametric safety verification of real-time systems in which ``correct orderings of events'' needed for system correctness are maintained by timing ...

Umeno, Shinya

2008-07-28T23:59:59.000Z

153

An adaptive framework for visualizing unstructured grids with time-varying scalar fields  

Science Conference Proceedings (OSTI)

Interactive visualization of time-varying volume data is essential for many scientific simulations. This is a challenging problem since this data is often large, can be organized in different formats (regular or irregular grids), with variable instances ... Keywords: Time-varying data, Unstructured grids, Volume rendering

Fábio F. Bernardon; Steven P. Callahan; João L. D. Comba; Cláudio T. Silva

2007-06-01T23:59:59.000Z

154

Reviewing real-time performance of nuclear reactor safety systems  

SciTech Connect

The purpose of this paper is to recommend regulatory guidance for reviewers examining real-time performance of computer-based safety systems used in nuclear power plants. Three areas of guidance are covered in this report. The first area covers how to determine if, when, and what prototypes should be required of developers to make a convincing demonstration that specific problems have been solved or that performance goals have been met. The second area has recommendations for timing analyses that will prove that the real-time system will meet its safety-imposed deadlines. The third area has description of means for assessing expected or actual real-time performance before, during, and after development is completed. To ensure that the delivered real-time software product meets performance goals, the paper recommends certain types of code-execution and communications scheduling. Technical background is provided in the appendix on methods of timing analysis, scheduling real-time computations, prototyping, real-time software development approaches, modeling and measurement, and real-time operating systems.

Preckshot, G.G. [Lawrence Livermore National Lab., CA (United States)

1993-08-01T23:59:59.000Z

155

Smart Grid Research At TTU Robert C. Qiu and David Gao  

E-Print Network (OSTI)

Smart Grid Research At TTU Robert C. Qiu and David Gao Department of Electrical and Computer and definitions for use in Smart Grid #12;Wind Energy Solar Energy (Donated by TVA) A Real-Time Smart Grid Testbed Grid #12;Smart Grid Research at TTU Renewable and clean energy integration into smart grid Wind Power

Qiu, Robert Caiming

156

{Control of Residential Load Management Networks Using Real Time Pricing  

E-Print Network (OSTI)

The interconnected smart grid promises many advantages toplays a key role in the smart grid’s ability to deliver onSimulation To ensure the smart grid truly is “smart” before

Burke, William Jerome

2010-01-01T23:59:59.000Z

157

RTJBench: A RealTime Java Benchmarking Framework  

E-Print Network (OSTI)

Abstract. The paper gives an overview of RTJBench, a framework designed to assist in the task of benchmarking programs written in the Real-Time Specification for Java, but with potentially more general applicability. RTJBench extends the JUnit framework for unit testing of Java applications with tools for real-time environment configuration, simple data processing and configurable graphical presentation services. We present design principles of RTJBench and give an example of a benchmarking suite we have been using for daily regression benchmarking of the Open Virtual Machine. Keywords: Benchmarking, regression benchmarking, Real-Time Specification for Java

Marek Prochazka; Andrey Madan; Jan Vitek; Wenchang Liu

2004-01-01T23:59:59.000Z

158

Formal specification of real-time dependable systems  

Science Conference Proceedings (OSTI)

The complex and critical nature of real-time, dependable systems (henceforth referred to as RTD systems) necessitates the use of analyzable specifications and specification analysis techniques supporting the assessment of behavioral, safety-critical, ... Keywords: analyzable specifications, behavioral quality, consistency check, fault-tolerant quality, formal reasoning systems, formal specification, multilevel description, nonfunctional qualities, precise specification language, real-time dependable systems, real-time systems, safety-critical quality, safety-critical software, security of data, security quality, software fault tolerance, specification analysis techniques, specification languages, system monitoring

1995-11-01T23:59:59.000Z

159

Harmonizing Melodies in Real-Time: the Connectionist Approach  

E-Print Network (OSTI)

We describe a sequential neural network for harmonizing melodies in real time. It models aspects of human cognition. This neural network succeeds reasonably well, if we take into consideration the constraints imposed by real time processing. The model exploits efficiently the available sequential information. The net contains a sub-net for meter that produces a periodic index of meter, providing the needed metric awareness. The net learns the relations between important notes of the melody and their harmonies and is able to produce harmonies for new melodies in real time, i.e., without knowledge of the future development of the melody.

Dan Gang; Daniel Lehmann; Naftali Wagner

1997-01-01T23:59:59.000Z

160

Battery Sizing for Grid Connected PV Systems with Fixed Minimum Charging/Discharging Time  

E-Print Network (OSTI)

Battery Sizing for Grid Connected PV Systems with Fixed Minimum Charging/Discharging Time Yu Ru, Jan Kleissl, and Sonia Martinez Abstract-- In this paper, we study a battery sizing problem for grid-connected photovoltaic (PV) systems assuming that the battery charging/discharging limit scales linearly with its

Martínez, Sonia

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Deployment of High Resolution Real-Time Distribution Level Metering on Maui: Preprint  

DOE Green Energy (OSTI)

In order to support the ongoing Maui Smart Grid demonstration project advanced metering has been deployed at the distribution transformer level in Maui Electric Company's Kihei Circuit on the Island of Maui. This equipment has been custom designed to provide accurately time-stamped Phasor and Power Quality data in real time. Additionally, irradiance sensors have been deployed at a few selected locations in proximity to photovoltaic (PV) installations. The received data is being used for validation of existing system models and for impact studies of future system hardware. Descriptions of the hardware and its installation, and some preliminary metering results are presented. Real-time circuit visualization applications for the data are also under development.

Bank, J.

2013-01-01T23:59:59.000Z

162

Microwave Plasma Monitoring System For Real-Time Elemental Analysis  

NLE Websites -- All DOE Office Websites (Extended Search)

Microwave Plasma Monitoring System For Real-Time Elemental Analysis Microwave Plasma Monitoring System For Real-Time Elemental Analysis Microwave Plasma Monitoring System For Real-Time Elemental Analysis The invention apparatus can also be used to monitor for the presence of halogens, sulfur and silicon. Available for thumbnail of Feynman Center (505) 665-9090 Email Microwave Plasma Monitoring System For Real-Time Elemental Analysis There has been invented a process for analyzing ambient air in a microwave induced plasma without use of an additional carrier gas. There has also been invented an apparatus for analyzing ambient air, other sample gas, or nebulized and desolvated liquids wherein a novel arrangement of plasma gas and sample gas conduits is used to enhance dependability of the plasma. This apparatus embodiment of the invention has a concentric arrangement of

163

Real-time energy management control for hybrid electric powertrains  

Science Conference Proceedings (OSTI)

This paper focuses on embedded control of a hybrid powertrain concepts for mobile vehicle applications. Optimal robust control approach is used to develop a real-time energy management strategy. The main idea is to store the normally wasted mechanical ...

Mohamed Zaher, Sabri Cetinkunt

2013-01-01T23:59:59.000Z

164

Real time reconstruction of quasiperiodic multi parameter physiological signals  

E-Print Network (OSTI)

A modern intensive care unit (ICU) has automated analysis systems that depend on continuous uninterrupted real time monitoring of physiological signals such as electrocardiogram (ECG), arterial blood pressure (ABP), and ...

Ganeshapillai, Gartheeban

165

Real-Time ALARA Plan Tracking Tool: Phase 1  

Science Conference Proceedings (OSTI)

The primary objective of this project was to develop a generic industry template for tracking and trending live, Real Time (RT) exposure data by task and RWP (Radiation Work Permit).

2007-04-11T23:59:59.000Z

166

FBLT: a real-time contention manager with improved schedulability  

Science Conference Proceedings (OSTI)

We consider software transactional memory (STM) concurrency control for embedded multicore real-time software, and present a novel contention manager for resolving transactional conflicts, called FBLT. We upper bound transactional retries and task response ...

Mohammed Elshambakey, Binoy Ravindran

2013-03-01T23:59:59.000Z

167

Real-time analog acquisition of electrophysiological signals with Soma  

E-Print Network (OSTI)

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 ...

Jonas, Eric Michael

2009-01-01T23:59:59.000Z

168

Device Specific Real-time Energy Monitoring, Control, and Dynamic...  

NLE Websites -- All DOE Office Websites (Extended Search)

Device Specific Real-time Energy Monitoring, Control, and Dynamic Demand Response Solutions Speaker(s): Jake Masters Olcay Ungun Date: February 23, 2010 - 12:00pm Location: 90-3122...

169

Towards Near Real-Time Availability With Enhanced Accuracy Turbo...  

NLE Websites -- All DOE Office Websites (Extended Search)

Turbo" ARSCL Towards Near Real-Time Availability With Enhanced Accuracy Turbo-ARSCL Project The goal is to speed delivery of the widely-used ARSCL product while improving the...

170

Decoupled Sampling for Real-Time Graphics Pipelines  

E-Print Network (OSTI)

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 ...

Ragan-Kelley, Jonathan

2010-03-29T23:59:59.000Z

171

Exploiting temporal coherence in real-time rendering  

Science Conference Proceedings (OSTI)

Temporal coherence (TC), the correlation of contents between adjacent rendered frames, exists across a wide range of scenes and motion types in practical real-time rendering. By taking advantage of TC, we can save redundant computation and improve ...

Daniel Scherzer; Lei Yang; Oliver Mattausch

2010-12-01T23:59:59.000Z

172

New Real-Time Quantum Efficiency Measurement System: Preprint  

DOE Green Energy (OSTI)

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.

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

2008-05-01T23:59:59.000Z

173

Available Technologies: Real-Time Monitoring of Plant ...  

... which act as common building blocks of plant ... the gases emitted by the living plant tissue are analyzed in real-time for emissions of 13C in both organic ...

174

MJO Initiation in the Real-Time Multivariate MJO Index  

Science Conference Proceedings (OSTI)

Madden–Julian oscillation (MJO) initiation in the real-time multivariate MJO (RMM) index is explored through an analysis of observed case studies and composite events. Specific examples illustrate that both the dates of MJO initiation and the ...

Katherine H. Straub

2013-02-01T23:59:59.000Z

175

NETL: Gasification Systems - Real Time Flame Monitoring of Gasifier...  

NLE Websites -- All DOE Office Websites (Extended Search)

Real Time Flame Monitoring of Gasifier Burner and Injectors Project No.: DE-FC26-02NT41585 Gas Technology Institute is developing a reliable, practical, and cost effective means to...

176

The 8 requirements of real-time stream processing  

Science Conference Proceedings (OSTI)

Applications that require real-time processing of high-volume data steams are pushing the limits of traditional data processing infrastructures. These stream-based applications include market feed processing and electronic trading on Wall Street, network ...

Michael Stonebraker; U?ur Çetintemel; Stan Zdonik

2005-12-01T23:59:59.000Z

177

Evaluating transport coefficients in real time thermal field theory  

E-Print Network (OSTI)

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.

S. Mallik; Sourav Sarkar

2012-11-12T23:59:59.000Z

178

Electricity Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

for the smart grid, distributed generation (microgrids), and improved grid reliability. Demand Response Demand response (DR) is a set of time-dependent activities that reduce or...

179

Mastering Uncertainty and Risk at Multiple Time Scales in the Future Electrical Grid  

SciTech Connect

Today's electrical grids enjoy a relatively clean separation of spatio-temporal scales yielding a compartmentalization of grid design, optimization, control and risk assessment allowing for the use of conventional mathematical tools within each area. In contrast, the future grid will incorporate time-intermittent renewable generation, operate via faster electrical markets, and tap the latent control capability at finer grid modeling scales; creating a fundamentally new set of couplings across spatiotemporal scales and requiring revolutionary advances in mathematics techniques to bridge these scales. One example is found in decade-scale grid expansion planning in which today's algorithms assume accurate load forecasts and well-controlled generation. Incorporating intermittent renewable generation creates fluctuating network flows at the hourly time scale, inherently linking the ability of a transmission line to deliver electrical power to hourly operational decisions. New operations-based planning algorithms are required, creating new mathematical challenges. Spatio-temporal scales are also crossed when the future grid's minute-scale fluctuations in network flows (due to intermittent generation) create a disordered state upon which second-scale transient grid dynamics propagate effectively invalidating today's on-line dynamic stability analyses. Addressing this challenge requires new on-line algorithms that use large data streams from new grid sensing technologies to physically aggregate across many spatial scales to create responsive, data-driven dynamic models. Here, we sketch the mathematical foundations of these problems and potential solutions.

Chertkov, Michael [Los Alamos National Laboratory; Bent, Russell W. [Los Alamos National Laboratory; Backhaus, Scott N. [Los Alamos National Laboratory

2012-07-10T23:59:59.000Z

180

Smart Generation and Transmission with Coherent, Real-Time Data 1  

E-Print Network (OSTI)

In recent years much of the discussion involving “smart grids ” has implicitly involved only the distribution side, notably advanced metering. However, today's electric grids have many challenges involving the rest of the grid— the bulk power system—that can be mitigated by making it more intelligent. An enabling technology for helping the bulk power system that has emerged in recent years is coherent, real-time data such as synchrophasors. In this paper we describe major challenges facing electrical generation and transmission today, including distributed generation (both microgrids and renewables), that availability of these measurements can help address. We overview applications utilizing coherent, real-time measurements that are in use today, or proposed by researchers. We then describe, normalize, and then quantitatively compare key factors for these power applications that influence how the delivery system should be planned, implemented, and managed. These include whether a person or computer is in the loop; and for both inputs and outputs: low latency, rate, criticality, quantity, and geographic scope. This represents a significant expansion of the NASPInet Service Class concept. From this, we derive the baseline communications requirements of a data delivery system supporting these applications and suggest implementation guidelines to achieve them. Next, we overview the state of the art in the supporting computer science areas of networking and distributed computing (including middleware), and analyze gaps in available network protocols, commercial middleware products, and utility standards in this area. We finally overview the emerging NASPInet as well as WSU’s GridStat project, which since 1999 has been defining, designing, developing, and deploying middleware to meet these emerging needs of the bulk power system. 1

David E. Bakken; Anjan Bose Carl H. Hauser; Schweitzer Iii; David E. Whitehead; Gregary C. Zweigle

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Development of a Real-Time, High-Speed Distribution Level Data Acquisition System  

Science Conference Proceedings (OSTI)

With the development of smart grids and the deployment of their enabling technologies, improved data acquisition will be needed at the distribution level to understand the full impact of these changes. With this in mind, NREL has developed a high-speed measurement and data collection network targeted specifically at the distribution level. This network is based around adaptable, rugged measurement devices designed for deployment at a variety of low and medium voltage locations below the sub-station. Each of these devices is capable of real-time data transmission via an Internet connection. Additionally, several analysis and visualization applications have been developed around the incoming data streams.

Bank, J.; Kroposki, B.

2012-01-01T23:59:59.000Z

182

A Simplification of a Real-Time Verification Problem  

E-Print Network (OSTI)

We revisit the problem of real-time verification with dense dynamics using timeout and calendar based models and simplify this to a finite state verification problem. To overcome the complexity of verification of real-time systems with dense dynamics, Dutertre and Sorea, proposed timeout and calender based transition systems to model the behavior of real-time systems and verified safety properties using k-induction in association with bounded model checking. In this work, we introduce a specification formalism for these models in terms of Timeout Transition Diagrams and capture their behavior in terms of semantics of Timed Transition Systems. Further, we discuss a technique, which reduces the problem of verification of qualitative temporal properties on infinite state space of (a large fragment of) these timeout and calender based transition systems into that on clockless finite state models through a two-step process comprising of digitization and canonical finitary reduction. This technique enables us to ve...

Saha, Indranil; Roy, Suman; 10.1007/978-3-540-75596-8_21

2010-01-01T23:59:59.000Z

183

Flash Memory Garbage Collection in Hard Real-Time Systems  

E-Print Network (OSTI)

Due to advances in capacity, speed, and economics, NAND-based flash memory technology is increasingly integrated into all types of computing systems, ranging from enterprise servers to embedded devices. However, due to its unpredictable up-date behavior and time consuming garbage collection mechanism, NAND-based flash memory is difficult to integrate into hard-real-time embedded systems. In this thesis, I propose a performance model for flash memory garbage collection that can be used in conjunction with a number of different garbage collection strategies. I describe how to model the cost of reactive (lazy) garbage 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 simplified memory consumption models. Results show that I prove the proactive schemes achieve the larger maximum schedulable utilization than the traditional garbage collection mechanism for hard real-time systems in flash memory.

Lai, Chien-An

2011-08-01T23:59:59.000Z

184

Dynamic control in real-time heuristic search  

Science Conference Proceedings (OSTI)

Real-time heuristic search is a challenging type of agent-centered search because the agent's planning time per action is bounded by a constant independent of problem size. A common problem that imposes such restrictions is pathfinding in modern computer ...

Vadim Bulitko; Mitja Luštrek; Jonathan Schaeffer; Yngvi Björnsson; Sverrir Sigmundarson

2008-05-01T23:59:59.000Z

185

Tracking Living Cells as They Differentiate in Real Time  

NLE Websites -- All DOE Office Websites (Extended Search)

Tracking Living Cells as They Differentiate in Real Time Print Tracking Living Cells as They Differentiate in Real Time Print Protein phosphorylation regulates protein function in a cell, either activating or inactivating the proteins responsible for many cell functions ranging from cell proliferation to differentiation to metabolism to signaling, and even programmed cell death. This chemical process has been studied intensively, but until now it has been impossible to watch phosphorylation at the molecular level without damaging cells or interfering with the very processes being examined. Using ALS Infrared Beamline 1.4.3, a group of researchers led by Hoi-Ying Holman, director of the Berkeley Synchrotron Infrared Structural Biology program at the ALS, developed a new technique for monitoring protein phosphorylation inside living mammalian cells, enabling them to follow cellular chemical changes in real time, without bias.

186

Tracking Living Cells as They Differentiate in Real Time  

NLE Websites -- All DOE Office Websites (Extended Search)

Tracking Living Cells as They Differentiate in Real Time Print Tracking Living Cells as They Differentiate in Real Time Print Protein phosphorylation regulates protein function in a cell, either activating or inactivating the proteins responsible for many cell functions ranging from cell proliferation to differentiation to metabolism to signaling, and even programmed cell death. This chemical process has been studied intensively, but until now it has been impossible to watch phosphorylation at the molecular level without damaging cells or interfering with the very processes being examined. Using ALS Infrared Beamline 1.4.3, a group of researchers led by Hoi-Ying Holman, director of the Berkeley Synchrotron Infrared Structural Biology program at the ALS, developed a new technique for monitoring protein phosphorylation inside living mammalian cells, enabling them to follow cellular chemical changes in real time, without bias.

187

Low Dose Radiation Research Program: Research Highlights - Real-time  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-time imaging of repair processes possible with Nickel-63 Real-time imaging of repair processes possible with Nickel-63 microirradiator Microscope Microscope stage-mounted microirradiation system. (A) Overall system shown mounted on a micromanipulator housed within a heated, humidified, environmental chamber of a microscope. (B) Close-up showing attachment of device to the micromanipulator. (C) Detail showing the bend in the enclosing capillary, which allows positioning of the active surface directly above the target cell. (D) Microirradiator tip in dissecting microscope. (E) Close-up view through microscope optics (scale bar, 10 microns.) Background: Scientists know that mammalian cells begin a nucleoplasmic repair process within seconds after being exposed to ionizing radiation. Real-time imaging of this process could further understanding of the

188

Tracking Living Cells as They Differentiate in Real Time  

NLE Websites -- All DOE Office Websites (Extended Search)

Tracking Living Cells as They Differentiate in Real Time Print Tracking Living Cells as They Differentiate in Real Time Print Protein phosphorylation regulates protein function in a cell, either activating or inactivating the proteins responsible for many cell functions ranging from cell proliferation to differentiation to metabolism to signaling, and even programmed cell death. This chemical process has been studied intensively, but until now it has been impossible to watch phosphorylation at the molecular level without damaging cells or interfering with the very processes being examined. Using ALS Infrared Beamline 1.4.3, a group of researchers led by Hoi-Ying Holman, director of the Berkeley Synchrotron Infrared Structural Biology program at the ALS, developed a new technique for monitoring protein phosphorylation inside living mammalian cells, enabling them to follow cellular chemical changes in real time, without bias.

189

Tracking Living Cells as They Differentiate in Real Time  

NLE Websites -- All DOE Office Websites (Extended Search)

Tracking Living Cells as They Differentiate in Real Time Print Tracking Living Cells as They Differentiate in Real Time Print Protein phosphorylation regulates protein function in a cell, either activating or inactivating the proteins responsible for many cell functions ranging from cell proliferation to differentiation to metabolism to signaling, and even programmed cell death. This chemical process has been studied intensively, but until now it has been impossible to watch phosphorylation at the molecular level without damaging cells or interfering with the very processes being examined. Using ALS Infrared Beamline 1.4.3, a group of researchers led by Hoi-Ying Holman, director of the Berkeley Synchrotron Infrared Structural Biology program at the ALS, developed a new technique for monitoring protein phosphorylation inside living mammalian cells, enabling them to follow cellular chemical changes in real time, without bias.

190

Java Automation Controller and Real-Time Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Java Automation Controller and Real-Time Systems Java Automation Controller and Real-Time Systems Speaker(s): Greg Bollella Date: June 29, 2009 - 12:00pm Location: 90-3122 Java has always been a disruptive technology and now it is breaking the mold in industrial, process, building, and transportation automation systems. For many years, programmable logic controllers (PLCs), the digital versions of old relay-based control systems (such as that used in the NYC Subway system in the late 1800s) have primarily controlled these systems. PLCs are the workhorses of the controls industry but the market is characterized by proprietary, closed, expensive, special-purpose solutions. A Java-based automation controller breaks the mold by allowing control algorithms, which require strict real-time capabilities, to run on

191

Precomputed local radiance transfer for real-time lighting design  

E-Print Network (OSTI)

This paper introduces a new method for real-time relighting of scenes illuminated by local light sources. We extend previous work on precomputed radiance transfer for distant lighting to local lighting by introducing the concept of unstructured light clouds. The unstructured light cloud enables a compact representation of local lights in the model and real-time rendering of complex models with full global illumination due to local light sources. We use simplification of lights, and clustered PCA to obtain a compressed representation. When storing only the indirect component of the illumination, we are able to get high quality with only 8– 16 lighting coefficients per vertex. Our results demonstrate real-time rendering of scenes with moving lights, dynamic cameras, glossy materials and global illumination.

Anders Wang Kristensen

2005-01-01T23:59:59.000Z

192

Tracking Living Cells as They Differentiate in Real Time  

NLE Websites -- All DOE Office Websites (Extended Search)

Tracking Living Cells as They Tracking Living Cells as They Differentiate in Real Time Tracking Living Cells as They Differentiate in Real Time Print Thursday, 27 September 2012 00:00 Protein phosphorylation regulates protein function in a cell, either activating or inactivating the proteins responsible for many cell functions ranging from cell proliferation to differentiation to metabolism to signaling, and even programmed cell death. This chemical process has been studied intensively, but until now it has been impossible to watch phosphorylation at the molecular level without damaging cells or interfering with the very processes being examined. Using ALS Infrared Beamline 1.4.3, a group of researchers led by Hoi-Ying Holman, director of the Berkeley Synchrotron Infrared Structural Biology program at the ALS, developed a new technique for monitoring protein phosphorylation inside living mammalian cells, enabling them to follow cellular chemical changes in real time, without bias.

193

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

E-Print Network (OSTI)

1 Evaluation of Concurrency Control Strategies for Mixed Soft Real-Time Database Systems Kam of the miss rate of soft real-time transactions. Although many new database applications have significant soft real-time database systems (MSRTDBS), in which both non-real-time and soft real-time transactions

Cheng, Reynold Cheng Chun

194

FINAL REPORT - CENTER FOR GRID MODERNIZATION  

SciTech Connect

The objective of the CGM was to develop high-priority grid modernization technologies in advanced sensors, communications, controls and smart systems to enable use of real-time or near real-time information for monitoring, analyzing and managing distribution and transmission grid conditions. The key strategic approach to carry out individual CGM research and development (R&D) projects was through partnerships, primarily with the GridApp™ Consortium utility members.

Markiewicz, Daniel R

2008-06-30T23:59:59.000Z

195

Resource Reclaiming in Multiprocessor Real-Time Systems  

E-Print Network (OSTI)

Most real-time scheduling algorithms schedule tasks with respect to their worst case computation times. Resource reclaiming refers to the problem of utilizing the resources left unused by a task when it executes less than its worst case computation time, or when a task is deleted from the current schedule. Resource reclaiming is a very important issue in dynamic real-time multiprocessor environments. In this paper, we present dynamic resource reclaiming algorithms that are effective, avoids any run time anomalies, and have bounded overhead cost that is independent of the number of tasks in the schedule. Each Task is assumed to have a worst case computation time, a deadline, and a set of resource requirements. The algorithms utilize the information given in a multiprocessor task schedule and perform on-line local optimization. The effectiveness of the algorithms is demonstrated through simulation studies. The algorithms have also been implemented in the Spring Kernel [15].

Chia Shen; Krithi Ramamritham; John A. Stankovic

1992-01-01T23:59:59.000Z

196

Real Time Flame Monitoring of Gasifier Burner and Injectors  

NLE Websites -- All DOE Office Websites (Extended Search)

Real Time Flame Monitoring of Gasifier Real Time Flame Monitoring of Gasifier Burner and Injectors Background The Gasification Technologies Program at the National Energy Technology Laboratory (NETL) supports research and development (R&D) in the area of gasification-a process whereby carbon-based materials (feedstocks) such as coal are converted into synthesis gas (syngas), which is separated into hydrogen (H 2 ) and carbon dioxide (CO 2 ) gas streams in a combustion turbine-generator as a way to generate clean electricity while

197

Integration of Real-Time Data Into Building Automation Systems  

SciTech Connect

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.

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

2003-04-16T23:59:59.000Z

198

Handheld portable real-time tracking and communications device  

DOE Patents (OSTI)

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.

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

199

Verifying Timing Constraints of Real-Time Systems by Means of Evolutionary Testing  

Science Conference Proceedings (OSTI)

Many industrial products are based on the use of embedded computer systems. Usually, these systems have to fulfil real-time requirements, and correct system functionality depends on their logical correctness as well as on their temporal correctness. ... Keywords: Real-time systems, evolutionary algorithm, evolutionary optimization, evolutionary testing, temporal behavior, temporal correctness , test strategy, testing, validation, verification

Joachim Wegener; Matthias Grochtmann

1998-11-01T23:59:59.000Z

200

Is Real-Time Pricing Green?: The Environmental Impacts of Electricity Demand Variance  

E-Print Network (OSTI)

for responding to real-time prices. 3 Recently someof RTP. the higher real-time price, each would use lessretail price, p . For real-time prices below the ?at price,

Holland, Stephen P.; Mansur, Erin T.

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Residential Customer Response to Real-time Pricing: The Anaheim Critical Peak Pricing Experiment  

E-Print Network (OSTI)

to reduce the day-ahead or real-time price in the Californiaon day- ahead and real-time prices, particularly duringday-ahead and real-time wholesale prices. Declaring a CPP

Wolak, Frank A.

2007-01-01T23:59:59.000Z

202

Wealth Transfers Among Large Customers from Implementing Real-Time Retail Electricity Pricing  

E-Print Network (OSTI)

who are charged real-time prices. I discuss the politicalor loss relative to the real-time price that obtains in eachits expected demand at the real-time price. Throughout this

Borenstein, Severin

2007-01-01T23:59:59.000Z

203

Customer Risk from Real-Time Retail Electricity Pricing: Bill Volatility and Hedgability  

E-Print Network (OSTI)

then pay/receive the real- time price for deviations fromI assume that the retail real-time prices customers face arewould likely dampen real-time price volatility and the

Borenstein, Severin

2007-01-01T23:59:59.000Z

204

RTZen: Highly Predictable, Real-time Java Middleware for Distributed and Embedded Systems  

E-Print Network (OSTI)

Real-Time Speci?cation for Java. Addison-Wesley (2000) 8.Vitek, J. : Real-time java scoped memory: Design patternsof the jRate Real-Time Java Implementation. In Meersman,

Raman, Krishna; Zhang, Yue; Panahi, Mark; Colmenares, Juan A; Klefstad, Raymond; Harmon, Trevor

2005-01-01T23:59:59.000Z

205

Detection and quantitation of HPV in genital and oral tissues and fluids by real time PCR  

E-Print Network (OSTI)

oral tissues and fluids by real time PCR. Virology Journalsamples by a real-time PCR- based system. J Virol MethodsMolecular beacon-based real-time PCR method for detection of

2010-01-01T23:59:59.000Z

206

Constraint Orientated Specification with CSP and Real Time Temporal Logic  

E-Print Network (OSTI)

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

Kent, University of

207

Concurrent and Real Time Systems: the CSP approach Steve Schneider  

E-Print Network (OSTI)

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

Doran, Simon J.

208

Active learning for real-time motion controllers  

Science Conference Proceedings (OSTI)

This paper describes an approach to building real-time highly-controllable characters. A kinematic character controller is built on-the-fly during a capture session, and updated after each new motion clip is acquired. Active learning is used to identify ... Keywords: active learning, human motion, motion capture

Seth Cooper; Aaron Hertzmann; Zoran Popovi?

2007-08-01T23:59:59.000Z

209

ADWICE – anomaly detection with real-time incremental clustering  

Science Conference Proceedings (OSTI)

Anomaly detection, detection of deviations from what is considered normal, is an important complement to misuse detection based on attack signatures. Anomaly detection in real-time places hard requirements on the algorithms used, making many proposed ... Keywords: adaptability, anomaly detection, clustering, intrusion detection, realtime

Kalle Burbeck; Simin Nadjm-Tehrani

2004-12-01T23:59:59.000Z

210

Real-Time Optimization Strategies for Building Systems  

E-Print Network (OSTI)

Our analysis indicates that it is possible to obtain energy savings of more than ... This information can be used to compute economic-optimal set-point ... This ability is key in reducing the exposure of buildings to real-time market volatility and.

211

Real-time concepts for block-based watermarking schemes  

Science Conference Proceedings (OSTI)

In this paper we propose a concept to transfer a non real-time watermarking system into a watermarking system, which meets the requirements of a media-on-demand system. Several applications scenarios requiring the embedding of watermarks with maximum ...

Michael Arnold; Oliver Lobisch

2002-12-01T23:59:59.000Z

212

Configurable model for real-time crane erection visualization  

Science Conference Proceedings (OSTI)

Detailed simulation and visualization of crane activities have been recently introduced to help engineers identify potential problems with critical erection tasks; however, the development of real-time erection visualizations for different types of cranes ... Keywords: Cooperative, Crane, Erection, Multibody, Physics Engine, Simulation, Visualization

Wei-Han Hung, Shih-Chung Kang

2013-11-01T23:59:59.000Z

213

Real-time locomotion control by sensing gloves: Research Articles  

Science Conference Proceedings (OSTI)

Sensing gloves are often used as an input device for virtual 3D games. We propose a new method to control characters such as humans or animals in real-time by using sensing gloves. Based on existing motion data of the body, a new method to map the hand ... Keywords: 3D game, 3D user interface, Computer puppetry, Sensing glove

Taku Komura; Wai-Chun Lam

2006-12-01T23:59:59.000Z

214

Real-time personalized sports video filtering and summarization  

Science Conference Proceedings (OSTI)

We demonstrate a real-time fully automated software system for filtering important events in sports video. Events represent occurrences of actions or state changes in video content. In the current prototype, we demonstrate detection of pitching in baseball ... Keywords: MPEG-7, event detection, indexing, summarization, video filtering

Di Zhong; Raj Kumar; Shih-Fu Chang

2001-10-01T23:59:59.000Z

215

Real-Time Forecasting of Snowfall Using a Neural Network  

Science Conference Proceedings (OSTI)

A set of 53 snowfall reports was collected in real time from the 2004/05 and 2005/06 cold seasons (November–March). Three snowfall-amount forecast methods were tested: neural network, surface-temperature-based 676-USDT table, and climatological ...

Paul J. Roebber; Melissa R. Butt; Sarah J. Reinke; Thomas J. Grafenauer

2007-06-01T23:59:59.000Z

216

Optimal Real-time Dispatch for Integrated Energy Systems  

E-Print Network (OSTI)

and HVAC operations. A real-time optimization program suchHVAC IES ISO-NE LBNL MILP NOx NP NRC NREL OLS P&DC PJM PUCT PURPA PV RETScreen RReDC Hybrid OptimizationHVAC equipment and other building energy equipment. This research is similar to the IES dispatch optimization

Firestone, Ryan Michael

2007-01-01T23:59:59.000Z

217

Real-time SPECT and 2D ultrasound image registration  

Science Conference Proceedings (OSTI)

In this paper we present a technique for fully automatic, real-time 3D SPECT (Single Photon Emitting Computed Tomography) and 2D ultrasound image registration. We use this technique in the context of kidney lesion diagnosis. Our registration algorithm ...

Marek Bucki; Fabrice Chassat; Francisco Galdames; Takeshi Asahi; Daniel Pizarro; Gabriel Lobo

2007-10-01T23:59:59.000Z

218

Statistical Characteristics of a Real-Time Precipitation Forecasting Model  

Science Conference Proceedings (OSTI)

At Colorado State University the Regional Atmospheric Modeling System (RAMS) has been used to produce real-time forecasts of precipitation for the Colorado mountain region since 1991. Originally a so-called dump-bucket scheme was used to generate ...

Brian Gaudet; William R. Cotton

1998-12-01T23:59:59.000Z

219

A real-time, multimodal, and dimensional affect recognition system  

Science Conference Proceedings (OSTI)

This study focuses on the development of a real-time automatic affect recognition system. It adapts a multimodal approach, where affect information taken from two modalities are combined to arrive at an emotion label that is represented in a valence-arousal ... Keywords: dimensional labels, emotion models, multimodal, regression

Nicole Nielsen Lee; Jocelynn Cu; Merlin Teodosia Suarez

2012-09-01T23:59:59.000Z

220

TOWARDS REAL-TIME GENERATION SCHEDULING IN MICROGRIDS WITH  

E-Print Network (OSTI)

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

Zhang, Junshan

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

CGLive - A Real Time Power Monitoring Solution for Enterprises  

Science Conference Proceedings (OSTI)

CGLive is a real time energy monitoring software tool that could be used to monitor and reduce energy consumption of PC's in a enterprise network environment. Working of CGLive has been tested in a lab environment and was found to be successful. Dashboard ... Keywords: Green IT, Intelligent Green IT Management, Energy audit, M2M technology, Sensor Networks, Performance Optimization, Remote monitoring

Subrahmanya VRK Rao; S. Ramesh; V. Arun Muthuraj; Karthik Sundararaman; Jinka Parthasarathi

2011-08-01T23:59:59.000Z

222

A real-time virtual machine implementation for small microcontrollers  

Science Conference Proceedings (OSTI)

A way to host a full general purpose virtual machine (VM) interpreter on a very small microcontroller platform is described. This machine provides a comprehensive set of general and enhanced functionality efficiently by abstracting the VM instruction ... Keywords: Microcontrollers, Real-time systems, Virtual machine

W. Roger Davis; Phillip A. Laplante; Bo I. Sandén

2012-09-01T23:59:59.000Z

223

Technical Note Real-time functional brain mapping using electrocorticography  

E-Print Network (OSTI)

et al., 1994; Keles et al., 2004). In contrast, methods that read endogenous signals, such as somato) 504­507 #12;the 80­200 Hz band (Grenier et al., 2001). This real-time mapping technique should. J. Neurophysiol. 94, 4269­4280. Grenier, F., Timofeev, I., Steriade, M., 2001. Focal synchronization

Rao, Rajesh

224

Real-time tessellation of terrain on graphics hardware  

Science Conference Proceedings (OSTI)

Synthetic terrain is a key element in many applications, which can lessen the sense of realism if it is not handled correctly. We propose a new technique for visualizing terrain surfaces by tessellating them on the GPU. The presented algorithm introduces ... Keywords: GPU, Level of detail, Real-time rendering, Terrain simulation, Tessellation

Oscar Ripolles; Francisco Ramos; Anna Puig-Centelles; Miguel Chover

2012-04-01T23:59:59.000Z

225

Slicing concurrent real-time system specifications for verification  

Science Conference Proceedings (OSTI)

The high-level specification language CSP-OZ-DC has been shown to be well-suited for modelling and analysing industrially relevant concurrent real-time systems. It allows us to model each of the most important functional aspects such as control flow, ...

Ingo Brückner

2007-07-01T23:59:59.000Z

226

REAL-TIME TRACER MONITORING OF RESERVOIR STIMULATION PROCEDURES  

SciTech Connect

Ongoing Phase 2 work comprises the development and field-testing of a real-time reservoir stimulation diagnostic system. Phase 3 work commenced in June 2001, and involved conducting research, development and field-testing of real-time enhanced dual-fluid stimulation processes. Experimental field-testing to date includes three well tests. Application of these real-time stimulation processes and diagnostic technologies has been technically successful with commercial production from the ''marginal'' reservoirs in the first two well tests. The third well test proved downhole-mixing is an efficient process for acid stimulation of a carbonate reservoir that produced oil and gas with 2200 psi bottomhole reservoir pressure, however, subsequent shut-in pressure testing indicated the reservoir was characterized by low-permeability. Realtimezone continues to seek patent protection in foreign markets to the benefit of both RTZ and NETL. Realtimezone and the NETL have licensed the United States patented to Halliburton Energy Services (HES). Ongoing Phase 2 and Phase 3 field-testing continues to confirm applications of both real-time technologies, from well testing conducted over the last 12-month work period and including well test scheduled for year-end of 2002. Technical data transfer to industry is ongoing via Internet tech-transfer, public presentations and industry publications. Final Phase 3 test work will be focused on further field-testing the innovational process of blending stimulation fluids downhole. This system provides a number of advantages in comparison to older industry fracturing techniques and allows the operator to control reservoir fracture propagation and concentrations of proppant placed in the reservoir, in real-time. Another observed advantage is that lower friction pressures result, which results in lower pump treating pressures and safer reservoir hydraulic fracturing jobs.

George Scott III

2002-08-01T23:59:59.000Z

227

Real-Time Traffic Information for Emergency Evacuations  

Science Conference Proceedings (OSTI)

There are many instances in which it is possible to plan ahead for an emergency evacuation (e.g., a chemical processing facility explosion). For those cases, if an accident were to happen, then the best evacuation plan for the prevailing network and weather conditions would be deployed. In other cases (e.g., the derailment of a train transporting hazardous materials), there may not be any previously developed plan to be implemented, and decisions must be made ad-hoc on how to proceed with an emergency evacuation. In both situations, the availability of real-time traffic information plays a critical role in the management of the evacuation operations. Due to cost constraints, only large urban areas have traffic sensor deployments that permit access to some sort of real-time traffic information; an evacuation taking place in other areas of the country would have to proceed without real-time traffic information. In order to improve operations during a vehicular emergency evacuation anywhere, a system of sensors that uses newly developed real-time traffic-information-gathering technologies to assess traffic conditions and to detect incidents on the main evacuation routes is presented in this paper. A series of tests, both in a controlled environment and in the field, were conducted to study the feasibility of such a system of traffic sensors and to assess its ability to provide real-time traffic information during an emergency evacuation. The results of these tests indicated that the prototype sensors are reliable and accurate for the type of application that is the focus of this paper.

Franzese, Oscar [ORNL; Zhang, Li [Mississippi State University (MSU); Mahmoud, Anas M. [Mississippi State University (MSU)

2010-01-01T23:59:59.000Z

228

Real time loss detection for SNM in process  

Science Conference Proceedings (OSTI)

This paper discusses the basis of a design for real time special nuclear material (SNM) loss detectors. The design utilizes process measurements and signal processing techniques to produce a timely estimate of material loss. A state estimator is employed as the primary signal processing algorithm. Material loss is indicated by changes in the states or process innovations (residuals). The design philosophy is discussed in the context of these changes.

Candy, J.V.; Dunn, D.R.; Gavel, D.T.

1980-03-20T23:59:59.000Z

229

Runtime Monitoring of Timing Constraints in Distributed Real-Time Systems  

E-Print Network (OSTI)

. Embedded real-time systems often operate under strict timing and dependability constraints. To ensure responsiveness, these systems must be able to provide the expected services in a timely manner even in the presence of faults. In this paper, we describe a run-time environment for monitoring of timing constraints in distributed real-time systems. In particular, we focus on the problem of detecting violations of timing assertions in an environment in which the real-time tasks run on multiple processors, and timing constraints can be either inter-processor or intra-processor constraints. Constraint violations are detected at the earliest possible time by deriving and checking intermediate constraints from the user-specified constraints. If the violations must be detected as early as possible, then the problem of minimizing the number of messages to be exchanged between the processors becomes intractable. We characterize a sub-class of timing constraints that occur commonly in distribu...

Farnam Jahanian; Ragunathan Rajkumar; Sitaram C. V. Raju

1994-01-01T23:59:59.000Z

230

Real-time nonlinear optimization as a generalized equation.  

SciTech Connect

We establish results for the problem of tracking a time-dependent manifold arising in real-time optimization by casting this as a parametric generalized equation. We demonstrate that if points along a solution manifold are consistently strongly regular, it is possible to track the manifold approximately by solving a single linear complementarity problem (LCP) at each time step. We derive sufficient conditions guaranteeing that the tracking error remains bounded to second order with the size of the time step even if the LCP is solved only approximately. We use these results to derive a fast, augmented Lagrangian tracking algorithm and demonstrate the developments through a numerical case study.

Zavala, V. M.; Anitescu, M. (Mathematics and Computer Science)

2010-11-11T23:59:59.000Z

231

A Sparse Grid SpaceTime Discretization Scheme for Parabolic Problems  

E-Print Network (OSTI)

A Sparse Grid Space­Time Discretization Scheme for Parabolic Problems Michael Griebel, Daniel Oeltz Abstract In this paper we consider the discretization in space and time of parabolic di#erential equations. This holds in many applications due to the smoothing properties of the propagator of the parabolic PDE (heat

Bartels, Soeren

232

Real-Time Security Assessment of Angle Stability Using Synchrophasors  

E-Print Network (OSTI)

communication technology plays a very important function. VI. REFERENCES [1] European SmartGrids Technology Platform, Strategic deployment document for Europe's Electricity Networks of the Future, SmartGrids

233

Real-time garbage collection for flash-memory storage systems of real-time embedded systems  

Science Conference Proceedings (OSTI)

Flash-memory technology is becoming critical in building embedded systems applications because of its shock-resistant, power economic, and nonvolatile nature. With the recent technology breakthroughs in both capacity and reliability, flash-memory storage ... Keywords: Embedded systems, flash memory, garbage collection, real-time system, storage systems

Li-Pin Chang; Tei-Wei Kuo; Shi-Wu Lo

2004-11-01T23:59:59.000Z

234

REAL-TIME BUILDING ENERGY SIMULATION USING ENERGYPLUS AND THE  

NLE Websites -- All DOE Office Websites (Extended Search)

REAL-TIME BUILDING ENERGY SIMULATION USING ENERGYPLUS AND THE REAL-TIME BUILDING ENERGY SIMULATION USING ENERGYPLUS AND THE BUILDING CONTROLS VIRTUAL TEST BED Xiufeng Pang 1 , Prajesh Bhattacharya 1 , Zheng O'Neill 2 , Philip Haves 1 , Michael Wetter 1 , and Trevor Bailey 2 1 Lawrence Berkeley National Laboratory, Berkeley, CA, USA 2 United Technologies Research Center, East Hartford, CT, USA ABSTRACT 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

235

Refinement and Verification of Real-Time Systems  

E-Print Network (OSTI)

This paper discusses highly general mechanisms for specifying the refinement of a real-time system as a collection of lower level parallel components that preserve the timing and functional requirements of the upper level specification. These mechanisms are discussed in the context of ASTRAL, which is a formal specification language for real-time systems. Refinement is accomplished by mapping all of the elements of an upper level specification into lower level elements that may be split among several parallel components. In addition, actions that can occur in the upper level are mapped to actions of components operating at the lower level. This allows several types of implementation strategies to be specified in a natural way, while the price for generality (in terms of complexity) is paid only when necessary. The refinement mechanisms are first illustrated using a simple digital circuit; then, through a highly complex phone system; finally, design guidelines gleaned from these specifications are presented.

Kolano, Paul Z; Kemmerer, Richard A; Mandrioli, Dino

2010-01-01T23:59:59.000Z

236

Slicing Concurrent Real-Time System Specifications for Verification  

E-Print Network (OSTI)

The high-level specification language CSP-OZ-DC has been shown to be well-suited for modelling and analysing industrially relevant concurrent real-time systems. It allows us to model each of the most important functional aspects such as control flow, data, and real-time requirements in adequate notations, maintaining a common semantic foundation for subsequent verification. Slicing on the other hand has become an established technique to complement the fight against state space explosion during verification which inherently accompanies increasing system complexity. In this paper, we exploit the special structure of CSP-OZ-DC specifications by extending the dependence graph—which usually serves as a basis for slicing—with several new types of dependencies, including timing dependencies derived from the specification’s DC part. Based on this we show how to compute a specification slice and prove correctness of our approach.

Ingo Brückner

2007-01-01T23:59:59.000Z

237

Looking at Transistor Gate Oxide Formation in Real Time  

NLE Websites -- All DOE Office Websites (Extended Search)

Looking at Transistor Gate Oxide Formation in Real Time Print Looking at Transistor Gate Oxide Formation in Real Time Print The oxide gate layer is critical to every transistor, and present-day layer thicknesses are in the 10-20 Å range (1-2 nm). However, little information exists on the oxidation process at this thickness. Available results are either for thicker layers grown under high-pressure conditions or for only the first couple of monolayers studied under high-vacuum conditions. Now, for the first time, a group of researchers has obtained real-time oxidation results for this elusive range. Using the ambient-pressure x-ray photoelectron spectroscopy (APXPS) endstation at ALS Beamline 9.3.2, they examined oxidation of Si(100) at pressures up to 1 torr and temperatures up to 450 ºC. The Si 2p chemical shifts allowed determination of oxide thickness as a function of time with a precision of 1-2 Å. The initial oxidation rate was very high (up to ~234 Å/h). Then, after an initial oxide thickness of 6-22 Å was formed, the rate decreased markedly (~1.5-4.0Å/h). Neither rate regime can be explained by the standard Deal-Grove (D-G) model for Si oxidation. These results are a significant step toward developing a better understanding of this critical thickness regime.

238

Looking at Transistor Gate Oxide Formation in Real Time  

NLE Websites -- All DOE Office Websites (Extended Search)

Looking at Transistor Gate Oxide Formation in Real Time Print Looking at Transistor Gate Oxide Formation in Real Time Print The oxide gate layer is critical to every transistor, and present-day layer thicknesses are in the 10-20 Å range (1-2 nm). However, little information exists on the oxidation process at this thickness. Available results are either for thicker layers grown under high-pressure conditions or for only the first couple of monolayers studied under high-vacuum conditions. Now, for the first time, a group of researchers has obtained real-time oxidation results for this elusive range. Using the ambient-pressure x-ray photoelectron spectroscopy (APXPS) endstation at ALS Beamline 9.3.2, they examined oxidation of Si(100) at pressures up to 1 torr and temperatures up to 450 ºC. The Si 2p chemical shifts allowed determination of oxide thickness as a function of time with a precision of 1-2 Å. The initial oxidation rate was very high (up to ~234 Å/h). Then, after an initial oxide thickness of 6-22 Å was formed, the rate decreased markedly (~1.5-4.0Å/h). Neither rate regime can be explained by the standard Deal-Grove (D-G) model for Si oxidation. These results are a significant step toward developing a better understanding of this critical thickness regime.

239

Looking at Transistor Gate Oxide Formation in Real Time  

NLE Websites -- All DOE Office Websites (Extended Search)

Looking at Transistor Gate Oxide Formation in Real Time Print Looking at Transistor Gate Oxide Formation in Real Time Print The oxide gate layer is critical to every transistor, and present-day layer thicknesses are in the 10-20 Å range (1-2 nm). However, little information exists on the oxidation process at this thickness. Available results are either for thicker layers grown under high-pressure conditions or for only the first couple of monolayers studied under high-vacuum conditions. Now, for the first time, a group of researchers has obtained real-time oxidation results for this elusive range. Using the ambient-pressure x-ray photoelectron spectroscopy (APXPS) endstation at ALS Beamline 9.3.2, they examined oxidation of Si(100) at pressures up to 1 torr and temperatures up to 450 ºC. The Si 2p chemical shifts allowed determination of oxide thickness as a function of time with a precision of 1-2 Å. The initial oxidation rate was very high (up to ~234 Å/h). Then, after an initial oxide thickness of 6-22 Å was formed, the rate decreased markedly (~1.5-4.0Å/h). Neither rate regime can be explained by the standard Deal-Grove (D-G) model for Si oxidation. These results are a significant step toward developing a better understanding of this critical thickness regime.

240

HARTEX: a safe real-time kernel for distributed computer control systems  

Science Conference Proceedings (OSTI)

A hard real-time kernel is presented for distributed computer control systems (DCCS), highlighting a number of novel features, such as integrated scheduling of hard and soft real-time tasks as well as tasks and resources; high-performance time management ... Keywords: distributed computer control systems, object modelling techniques, real-time communication, real-time operating systems, scheduling algorithms

C. K. Angelov; I. E. Ivanov; A. Burns

2002-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Real-time Pricing Demand Response in Operations  

Science Conference Proceedings (OSTI)

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.

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

2012-07-26T23:59:59.000Z

242

Real-Time Raman Gas Composition Sensor.pdf  

NLE Websites -- All DOE Office Websites (Extended Search)

Sensor Sensor Opportunity Technology/Capability Overview Benefits to Partner Development Status Contact The NETL Real-time Raman Gas Composition Analyzer determines the composition of a flowing gaseous sample in real-time and provides the concentration of each gas in that sample. . . . ‡ Testing partners would have the opportunity to evaluate the performance of the prototype system, implement new feed-forward controls, and may help shape the commercial product configuration ‡ This sensor will greatly benefit the power industry, as well as other industries utilizing gaseous input or output streams by enabling smarter control to increase process efficiency and reduce emissions ‡ We are seeking opportunities to field test the prototype instruments in power and industrial applications, as well

243

Real Time Monitoring of Self Assembled Monolayers Using ATR: Implications  

NLE Websites -- All DOE Office Websites (Extended Search)

Real Time Monitoring of Self Assembled Monolayers Using ATR: Implications Real Time Monitoring of Self Assembled Monolayers Using ATR: Implications to Atmospheric Organic Surfaces Speaker(s): Yael Dubowski Date: December 10, 2003 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Hugo Destaillats Most studies of heterogeneous reactions on aerosols have focused on their implications for gas phase species. Less attention, however, has been given to the modification of aerosol surfaces during such reactions. Alteration of aerosol surface species may affect their hygroscopic and radiative properties as well as their reactivity toward other atmospheric trace species. In the present study, we use self-assembled organic monolayers (SAM) as proxies for atmospheric organic aerosols. Detection of even very short carbon chains (i.e., C3) as well as continuous monitoring of the SAMs

244

Real time markerless motion tracking using linked kinematic chains  

DOE Patents (OSTI)

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.

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

2007-08-14T23:59:59.000Z

245

Program on Technology Innovation: Real Time NDE for Welding  

Science Conference Proceedings (OSTI)

This report describes real-time nondestructive evaluation (NDE) for welding and provides an update on the NDE methods being investigated and developed for flaw detection during welding and the corresponding technical results. It also provides a summary of the future proposed work.BackgroundIt has been recognized that efficient, high-quality welding processes are essential to the economical development and safety of new advanced and operational nuclear ...

2012-12-12T23:59:59.000Z

246

Real-time pricing -- supplanted by Price-risk derivatives?  

Science Conference Proceedings (OSTI)

Future trends in pricing options for wholesale electrical generation are discussed. Specifically, the effect of price derivatives on electricity consumption are examined. Economic analyses are presented for customer demand in real-time pricing scenarios with and without a price derivative hedge. It is determined that consumption will be curtailed even when price caps have been purchased. Consumption behavior is also analyzed to determine the effect of different price caps; regardless of price, consumption is curtailed in response to price.

O`Sheasy, M.

1997-03-01T23:59:59.000Z

247

Imaging gene expression in real-time using aptamers  

Science Conference Proceedings (OSTI)

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.

Shin, Il Chung

2011-12-13T23:59:59.000Z

248

Energy-aware real-time communication in wireless ad-hoc micro sensors network  

Science Conference Proceedings (OSTI)

Perfect functioning not only at hardware level but also at software level design is indispensable to quench the thirst of an ideal real time communication. From software perspective, in the timeless sensitive communication context, Real-Time Operating ... Keywords: energy awareness, real-time communication, real-time operating system, sensor network

Sohail Jabbar; Abid Ali Minhas

2009-12-01T23:59:59.000Z

249

Real-time Data Center Energy Efficiency At Pacific Northwest National Laboratory  

SciTech Connect

The escalating consumption of power in data centers worldwide has brought the issue of data center energy efficiency to the forefront. Data center owners and operators now regard detailed knowledge of the energy efficiencies of their data centers as a competitive advantage. With funding from the Department of Energy (NNSA), PNNL has undertaken an in-depth analysis of the real-time energy efficiency for its Energy Smart Data Center Test Bed(ESDC-TB), which is housed in the mixed-use EMSL. The analysis is centered around the real-time display of The Green Grid’s proposed DCiE metric. To calculate this metric, PNNL relies on a variety of sources of data. At the ESDC-TB level, the data center is instrumented to the 100% level (all power consumption, and water temperatures and flow rates are measured). Most of this data is monitored in real-time, but the exception to this is with the CRAHs, which rely on a one-time power consumption measurement for the blowers (these are single speed blowers, so a one-time measurement suffices.). Outside of the data center (EMSL facility level), PNNL relies on the following: • Real-time data from the entire chiller plant (five chillers), six chilled water pumps, and one of four cooling towers (blowers only). • One-time power measurements for a single fixed speed pump that is representative of each grouping of pumps (the other pumps are assumed to possess the same power consumption levels). • One-time power measurements for a single two-speed cooling tower blower. This same blower model is deployed in three of the four cooling towers, so is assumed to be representative for all these blowers. • One-time power measurements for a single fixed speed cooling tower pump. This same pump model is deployed in all four cooling towers, so is assumed to be representative for all these pumps. A software tool named FRED was developed by PNNL to acquire, reduce, display, and archive all the data acquired from the ESDC-TB and EMSL. FRED provides the ability to display various levels of real-time data starting at the ESDC-TB and EMSL levels, then to lower levels as desired. For example, for the ESDC-TB, graphical screens are provided at the data center level, the rack level, the server level, and even the component level. In the near-term, FRED will also display the real-time DCiE. One of the major challenges to doing this in a mixed-use facility has been to quantify the power consumption of each major mechanical or electrical subsystem that is attributable to the IT equipment housed within the ESDC-TB (i.e., NW-ICE). PNNL has tackled this issue for its five chiller plant, and the analysis is presented in the paper. The analysis for all the remaining mechanical and electrical subsystems is now underway and will be presented in future publications.

Sisk, Daniel R.; Khaleel, Mohammad A.; Marquez, Andres; Hatley, Darrel D.; Cader, Tahir; Schmidt, Roger R.

2009-05-26T23:59:59.000Z

250

Real-Time Signal Estimation From Modified Short-Time Fourier Transform Magnitude Spectra  

Science Conference Proceedings (OSTI)

An algorithm for estimating signals from short-time magnitude spectra is introduced offering a significant improvement in quality and efficiency over current methods. The key issue is how to invert a sequence of overlapping magnitude spectra (a ldquospectrogramrdquo) ... Keywords: Magnitude-only reconstruction, real-time systems, signal estimation, spectrogram inversion, time-scale modification (TSM)

Xinglei Zhu; G. Beauregard; L. Wyse

2007-07-01T23:59:59.000Z

251

Smart Grid | Argonne National Laboratory  

NLE Websites -- All DOE Office Websites (Extended Search)

Smart Grid Smart Grid Argonne researchers are working to create new, more powerful technology for long-distance transmission of renewable electricity, to balance rural supply and urban demand, and to integrate wind- and solar-generated electricity into the grid. Argonne is moving the smart grid from concept to reality, ensuring that this technology will interact seamlessly with new plug-in and electric cars. The smart grid is a key element in the national plan to lower energy costs for consumers, achieve energy independence and reduce greenhouse gases. The smart grid - an updated, futuristic electric power grid - will employ real-time, two-way communication technologies that allow consumers to connect directly with power suppliers. Customers will be able to choose

252

TRANSIENT, REAL-TIME, PARTICULATE EMISSION MEASUREMENTS IN DIESEL ENGINES  

DOE Green Energy (OSTI)

This paper reports our efforts to develop an instrument, TG-1, to measure particulate emissions from diesel engines in real-time. TG-1 while based on laser-induced incandescence allows measurements at 10 Hz on typical engine exhausts. Using such an instrument, measurements were performed in the exhaust of a 1.7L Mercedes Benz engine coupled to a low inertia dynamometer. Comparative measurements performed under engine steady state conditions showed the instrument to agree within {+-}12% of measurements performed with an SMPS. Moreover, the instrument had far better time response and time resolution than a TEOM{reg_sign} 1105. Also, TG-1 appears to surpass the shortcomings of the TEOM instrument, i.e., of yielding negative values under certain engine conditions and, being sensitive to external vibration.

Gupta, S; Shih, J; Hillman, G; sekar, R; Graze, R; Shimpi, S; Martin, W; Pier, D

2003-08-24T23:59:59.000Z

253

Near real time vapor detection and enhancement using aerosol adsorption  

DOE Patents (OSTI)

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.

Novick, Vincent J.; Johnson, Stanley A.

1997-12-01T23:59:59.000Z

254

Real-time human collaboration monitoring and intervention  

DOE Patents (OSTI)

A method of and apparatus for monitoring and intervening in, in real time, a collaboration between a plurality of subjects comprising measuring indicia of physiological and cognitive states of each of the plurality of subjects, communicating the indicia to a monitoring computer system, with the monitoring computer system, comparing the indicia with one or more models of previous collaborative performance of one or more of the plurality of subjects, and with the monitoring computer system, employing the results of the comparison to communicate commands or suggestions to one or more of the plurality of subjects.

Merkle, Peter B. (Sandia Park, NM); Johnson, Curtis M. (Sandia Park, NM); Jones, Wendell B. (Albuquerque, NM); Yonas, Gerold (Albuquerque, NM); Doser, Adele B. (Albuquerque, NM); Warner, David J. (Rancho Santa Fe, CA)

2010-07-13T23:59:59.000Z

255

Run-Time Power-Down Strategies for Real-Time SDRAM Memory Controllers  

E-Print Network (OSTI)

. PDTRANS PUP Figure 1: Power-Down Transitions 3.3 Arbiters and Latency-Rate Servers Real-time SDRAM memory on the memory state and the power- down duration, for both the power-down strategies. We experimentally evaluate, the tTRANS parameter gives the transition in timing constraint before the memory can switch to a power

Epema, Dick H.J.

256

Real-Time Chemical Imaging of Bacterial Biofilm Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-Time Chemical Imaging of Bacterial Biofilm Development Print Real-Time Chemical Imaging of Bacterial Biofilm Development Print Scientists have developed a robust and label-free method to probe the chemical underpinnings of developing bacterial biofilms. Almost all bacteria can form biofilms-dynamic communities of cells enclosed in self-produced matrices of polymers that stick to other bacteria or surfaces in water-containing environments. Coordinated collectively, these bacteria defend against antagonists, break down recalcitrant materials, and produce biofuels. Researchers from Berkeley Lab, Lawrence Livermore National Lab, and UC Berkeley coupled infrared (IR) rays from ALS Beamline 1.4.3 to the first open-channel microfluidic platform to determine the chemistry that shapes biofilm development. This combination of synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectromicroscopy and the microfluidic platform will have a significant impact on several scientific disciplines that require chemical-scale information on biofilm phenotype and function, including Berkeley Lab's bioenergy efforts and subsurface biogeochemical studies.

257

Real-Time Chemical Imaging of Bacterial Biofilm Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-Time Chemical Imaging of Bacterial Biofilm Development Print Real-Time Chemical Imaging of Bacterial Biofilm Development Print Scientists have developed a robust and label-free method to probe the chemical underpinnings of developing bacterial biofilms. Almost all bacteria can form biofilms-dynamic communities of cells enclosed in self-produced matrices of polymers that stick to other bacteria or surfaces in water-containing environments. Coordinated collectively, these bacteria defend against antagonists, break down recalcitrant materials, and produce biofuels. Researchers from Berkeley Lab, Lawrence Livermore National Lab, and UC Berkeley coupled infrared (IR) rays from ALS Beamline 1.4.3 to the first open-channel microfluidic platform to determine the chemistry that shapes biofilm development. This combination of synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectromicroscopy and the microfluidic platform will have a significant impact on several scientific disciplines that require chemical-scale information on biofilm phenotype and function, including Berkeley Lab's bioenergy efforts and subsurface biogeochemical studies.

258

Real-Time Chemical Imaging of Bacterial Biofilm Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-Time Chemical Imaging of Bacterial Biofilm Development Print Real-Time Chemical Imaging of Bacterial Biofilm Development Print Scientists have developed a robust and label-free method to probe the chemical underpinnings of developing bacterial biofilms. Almost all bacteria can form biofilms-dynamic communities of cells enclosed in self-produced matrices of polymers that stick to other bacteria or surfaces in water-containing environments. Coordinated collectively, these bacteria defend against antagonists, break down recalcitrant materials, and produce biofuels. Researchers from Berkeley Lab, Lawrence Livermore National Lab, and UC Berkeley coupled infrared (IR) rays from ALS Beamline 1.4.3 to the first open-channel microfluidic platform to determine the chemistry that shapes biofilm development. This combination of synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectromicroscopy and the microfluidic platform will have a significant impact on several scientific disciplines that require chemical-scale information on biofilm phenotype and function, including Berkeley Lab's bioenergy efforts and subsurface biogeochemical studies.

259

Real-Time Chemical Imaging of Bacterial Biofilm Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-Time Chemical Imaging of Bacterial Biofilm Development Print Real-Time Chemical Imaging of Bacterial Biofilm Development Print Scientists have developed a robust and label-free method to probe the chemical underpinnings of developing bacterial biofilms. Almost all bacteria can form biofilms-dynamic communities of cells enclosed in self-produced matrices of polymers that stick to other bacteria or surfaces in water-containing environments. Coordinated collectively, these bacteria defend against antagonists, break down recalcitrant materials, and produce biofuels. Researchers from Berkeley Lab, Lawrence Livermore National Lab, and UC Berkeley coupled infrared (IR) rays from ALS Beamline 1.4.3 to the first open-channel microfluidic platform to determine the chemistry that shapes biofilm development. This combination of synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectromicroscopy and the microfluidic platform will have a significant impact on several scientific disciplines that require chemical-scale information on biofilm phenotype and function, including Berkeley Lab's bioenergy efforts and subsurface biogeochemical studies.

260

Real-Time Chemical Imaging of Bacterial Biofilm Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-Time Chemical Imaging of Bacterial Biofilm Development Print Real-Time Chemical Imaging of Bacterial Biofilm Development Print Scientists have developed a robust and label-free method to probe the chemical underpinnings of developing bacterial biofilms. Almost all bacteria can form biofilms-dynamic communities of cells enclosed in self-produced matrices of polymers that stick to other bacteria or surfaces in water-containing environments. Coordinated collectively, these bacteria defend against antagonists, break down recalcitrant materials, and produce biofuels. Researchers from Berkeley Lab, Lawrence Livermore National Lab, and UC Berkeley coupled infrared (IR) rays from ALS Beamline 1.4.3 to the first open-channel microfluidic platform to determine the chemistry that shapes biofilm development. This combination of synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectromicroscopy and the microfluidic platform will have a significant impact on several scientific disciplines that require chemical-scale information on biofilm phenotype and function, including Berkeley Lab's bioenergy efforts and subsurface biogeochemical studies.

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Real-Time Chemical Imaging of Bacterial Biofilm Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-Time Chemical Imaging of Bacterial Biofilm Development Print Real-Time Chemical Imaging of Bacterial Biofilm Development Print Scientists have developed a robust and label-free method to probe the chemical underpinnings of developing bacterial biofilms. Almost all bacteria can form biofilms-dynamic communities of cells enclosed in self-produced matrices of polymers that stick to other bacteria or surfaces in water-containing environments. Coordinated collectively, these bacteria defend against antagonists, break down recalcitrant materials, and produce biofuels. Researchers from Berkeley Lab, Lawrence Livermore National Lab, and UC Berkeley coupled infrared (IR) rays from ALS Beamline 1.4.3 to the first open-channel microfluidic platform to determine the chemistry that shapes biofilm development. This combination of synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectromicroscopy and the microfluidic platform will have a significant impact on several scientific disciplines that require chemical-scale information on biofilm phenotype and function, including Berkeley Lab's bioenergy efforts and subsurface biogeochemical studies.

262

Real-Time Chemical Imaging of Bacterial Biofilm Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-Time Chemical Imaging of Bacterial Biofilm Development Print Real-Time Chemical Imaging of Bacterial Biofilm Development Print Scientists have developed a robust and label-free method to probe the chemical underpinnings of developing bacterial biofilms. Almost all bacteria can form biofilms-dynamic communities of cells enclosed in self-produced matrices of polymers that stick to other bacteria or surfaces in water-containing environments. Coordinated collectively, these bacteria defend against antagonists, break down recalcitrant materials, and produce biofuels. Researchers from Berkeley Lab, Lawrence Livermore National Lab, and UC Berkeley coupled infrared (IR) rays from ALS Beamline 1.4.3 to the first open-channel microfluidic platform to determine the chemistry that shapes biofilm development. This combination of synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectromicroscopy and the microfluidic platform will have a significant impact on several scientific disciplines that require chemical-scale information on biofilm phenotype and function, including Berkeley Lab's bioenergy efforts and subsurface biogeochemical studies.

263

Real-Time System Log Monitoring/Analytics Framework  

SciTech Connect

Analyzing system logs provides useful insights for identifying system/application anomalies and helps in better usage of system resources. Nevertheless, it is simply not practical to scan through the raw log messages on a regular basis for large-scale systems. First, the sheer volume of unstructured log messages affects the readability, and secondly correlating the log messages to system events is a daunting task. These factors limit large-scale system logs primarily for generating alerts on known system events, and post-mortem diagnosis for identifying previously unknown system events that impacted the systems performance. In this paper, we describe a log monitoring framework that enables prompt analysis of system events in real-time. Our web-based framework provides a summarized view of console, netwatch, consumer, and apsched logs in real- time. The logs are parsed and processed to generate views of applications, message types, individual/group of compute nodes, and in sections of the compute platform. Also from past application runs we build a statistical profile of user/application characteristics with respect to known system events, recoverable/non-recoverable error messages and resources utilized. The web-based tool is being developed for Jaguar XT5 at the Oak Ridge Leadership Computing facility.

Oral, H Sarp [ORNL; Dillow, David A [ORNL; Park, Byung H [ORNL; Shipman, Galen M [ORNL; Geist, Al [ORNL; Gunasekaran, Raghul [ORNL

2011-01-01T23:59:59.000Z

264

Real-time individualized training vectors for experiential learning.  

Science Conference Proceedings (OSTI)

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.

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

2011-01-01T23:59:59.000Z

265

Real-Time Chemical Imaging of Bacterial Biofilm Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-Time Chemical Imaging of Bacterial Biofilm Development Print Real-Time Chemical Imaging of Bacterial Biofilm Development Print Scientists have developed a robust and label-free method to probe the chemical underpinnings of developing bacterial biofilms. Almost all bacteria can form biofilms-dynamic communities of cells enclosed in self-produced matrices of polymers that stick to other bacteria or surfaces in water-containing environments. Coordinated collectively, these bacteria defend against antagonists, break down recalcitrant materials, and produce biofuels. Researchers from Berkeley Lab, Lawrence Livermore National Lab, and UC Berkeley coupled infrared (IR) rays from ALS Beamline 1.4.3 to the first open-channel microfluidic platform to determine the chemistry that shapes biofilm development. This combination of synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectromicroscopy and the microfluidic platform will have a significant impact on several scientific disciplines that require chemical-scale information on biofilm phenotype and function, including Berkeley Lab's bioenergy efforts and subsurface biogeochemical studies.

266

Real Time Flame Monitoring of Gasifier Burner and Injectors  

NLE Websites -- All DOE Office Websites (Extended Search)

8 8 Gasification Technologies contacts Gary J. stiegel Gasification Technology Manager National Energy Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940 Pittsburgh, PA 15236 412-386-4499 gary.stiegel@netl.doe.gov Jenny tennant Project Manager National Energy Technology Laboratory 3610 Collins Ferry Road P.O. Box 880 Morgantown, WV 26507 304-285-4830 jenny.tennant@netl.doe.gov David Rue Principal Investigator Gas Technology Institute 1700 South Mount Prospect Road Des Plaines, IL 60018 847-768-0508 david.rue@gastechnology.org Real Time Flame moniToRing oF gasiFieR BuRneR and injecToRs Description Combustion scientists and engineers have studied radiant emissions of various flames for many years. For some time, technologists have understood the rich potential for

267

Real-time monitoring of the TVA power system  

SciTech Connect

This article describes how the Tennessee Valley Authority (TVA) is experimenting with one of the many concepts for the uses of phasor measurements, that of utilizing phasor measurement units (PMUs) as a state estimation system. However, the term state estimation no longer applies; what is being performed is a state determination in near real-time. The PMU is a transducer that can measure voltage and current with very high accuracy. It has the ability to calculate watts, vars, frequency, and phase angle twelve times per power line cycle. The PMU can be placed in the power system so as to provide time-stamped voltage and current phasors that can be used as state variables. Input from other PMUs throughout the power system can be synchronized to within 1 microsecond via the Global Positioning System (GPS). These real-time state variables provided by the PMUs allow state estimation to be replaced by state determination. The PMUs monitoring the power system can also provide the necessary data to accurately depict events and disturbances. The PMU can be set to be triggered by an event or disturbance. A user-defined table of data, including pretrigger data, which is the sampled data for a specified interval, is stored in the PMU. The data from a single PMU can be retrieved and analyzed by popular data analysis packages to show the performance of control and protection equipment. The tables retrieved from a network of PMUs can be used to determine the system response to these events and disturbances.

Cease, T.W.; Feldhaus, B. (Univ. of Tennessee, Chattanooga, TN (United States))

1994-07-01T23:59:59.000Z

268

Technology Competition and Optimal investment Timing: A Real Options Perspective  

E-Print Network (OSTI)

Companies often choose to defer irreversible investments to maintain valuable managerial flexibility in an uncertain world. For some technology-intensive projects, technology uncertainty plays a dominant role in affecting investment timing. This article analyzes the investment timing strategy for a firm that is deciding about whether to adopt one or the other of two incompatible and competing technologies. We develop a continuous-time stochastic model that aids in the determination of optimal timing for managerial adoption within the framework of real options theory. The model captures the elements of the decisionmaking process in such a way so as to provide managerial guidance in light of expectations associated with future technology competition. The results of this study suggest that a technology adopter should defer its investment until one technology’s probability to win out in the marketplace and achieve critical mass reaches a critical threshold. The optimal timing strategy for adoption that we propose can also be used in markets that are subject to positive network feedback. Although network effects usually tend to make the market equilibrium less stable and shorten the process of technology competition, we show why technology adopters may require more technology uncertainties to be

Robert J. Kauffman; Xiaotong Li

2005-01-01T23:59:59.000Z

269

Definition: Real-time Pricing | Open Energy Information  

Open Energy Info (EERE)

to usage on an hourly basis.1 Related Terms smart grid References https:www.smartgrid.govcategorytechnologyrealtimepricing C LikeLike UnlikeLike You like this.Sign...

270

RealTime distributed congestion control for electrical vehicle charging  

Science Conference Proceedings (OSTI)

The significant load and unpredictable mobility of electric vehicles (EVs) makes them a challenge for grid distribution systems. Unlike most current approaches to control EV charging, which construct optimal charging schedules by predicting EV state ...

O. Ardakanian; C. Rosenberg; S. Keshav

2012-12-01T23:59:59.000Z

271

Real-time chemical analysis of aerosol particles  

Science Conference Proceedings (OSTI)

An important aspect of environmental atmospheric monitoring requires the characterization of airborne microparticles and aerosols. Unfortunately, traditional sample collection and handling techniques are prone to contamination and interference effects that can render an analysis invalid. These problems can be avoided by using real-time atmospheric sampling techniques followed by immediate mass spectrometric analysis. The former is achieved in these experiments via a two state differential pumping scheme that is attached directly to a commercially available quadruple ion trap mass spectrometer. Particles produced by an external particle generator enter the apparatus and immediately pass through two cw laser/fiberoptic based detectors positioned two centimeters apart. Timing electronics measure the time between detection events, estimate the particles arrival in the center of the ion trap and control the firing of a YAG laser. Ions produced when the UV laser light ablates the particle`s surface are stored by the ion trap for mass analysis. Ion trap mass spectrometers have several advantages over conventional time-of-flight instruments. First, they are capable of MS/MS analysis by the collisional dissociation of a stored species, This permits complete chemical characterization of airborne samples. Second, ion traps are small and lend themselves to portable, field oriented applications.

Yang, M.; Whitten, W.B.; Ramsey, J.M.

1995-04-01T23:59:59.000Z

272

Stream computing based synchrophasor application for power grids  

Science Conference Proceedings (OSTI)

This paper proposes an application of stream computing analytics framework to high speed synchrophasor data for real time monitoring and control of electric grid. High volume streaming synchrophasor data from geographically distributed grid sensors (namely, ... Keywords: power grid, stream computing, synchrophasor, voltage stability

Jagabondhu Hazra; Kaushik Das; Deva P. Seetharam; Amith Singhee

2011-11-01T23:59:59.000Z

273

Integration of Smart Home Data with Simulated Smart Grid  

E-Print Network (OSTI)

Integration of Smart Home Data with Simulated Smart Grid Introduction Data was generated using was simulated in the smart grid in RTDS. Objective Objective was to monitors or get real-time data about after getting the data. Objective is to model a dynamic load within simulated smart grid with live data

Collins, Gary S.

274

Towards a Distributed, Service-Oriented Control Infrastructure for Smart Grid  

Science Conference Proceedings (OSTI)

Smart Grid initiatives aim to overlay the existing power grid infrastructure with a communication and computation infrastructure to enable integration of renewable resources and increased efficiency and reliability of the electric power grid. This requires ... Keywords: Smart Grid, Cyber Physical Systems, Power System Informatics, Hard Real-Time Systems, Web Services, Model Transformation

Muhammad Umer Tariq; Santiago Grijalva; Marilyn Wolf

2011-04-01T23:59:59.000Z

275

A study on real-time pricing electric tariffs  

Science Conference Proceedings (OSTI)

With deregulation in the electric industry, customers have new opportunities to reduce their electricity cost, one of which consists of using real-time pricing (RTP) tariffs. The authors surveyed electric utilities in the country to investigate how these tariffs are presently implemented to help potential customers understand RTP tariffs. The survey found that the most common type of RTP tariff is a two-part tariff. It consists of a customer baseline load (CBL) charge and an energy charge (or credit) based on usage above (or below) the CBL charged at hourly prices. This type of tariff is explained using Oklahoma Gas and Electric (OG and E)`s day-ahead-pricing (DAP) tariff and calculation examples. This article also investigates the effect of customer flexibility on the charges under the DAP tariff by comparing three different types of customer response.

Mont, J.A.; Turner, W.C. [Oklahoma State Univ., Stillwater, OK (United States). School of Industrial Engineering and Management

1999-10-01T23:59:59.000Z

276

Real-time multiradar simulation with a multiprocessor  

Science Conference Proceedings (OSTI)

Radar coverage of a region for air defense or air traffic control often necessitates the use of multiple radars to compensate for terrain-caused coverage problems and/or guarantee a uniformly good probability of detection over the region. The multi-radar simulator has been built to provide means wherein a real time simulation of a system of netted radars, their radar processors, and collocated trackers can be performed. This simulator is an MIMD machine utilizing the building block processor as the processing element. This implementation has proven easy to program and has brought the necessary computational speed to the problem of emulating effectively a set of radars and their processors observing the same air picture from different vantage points. 5 references.

Hiner, F.P. III

1981-01-01T23:59:59.000Z

277

Real-time neural network earthquake profile predictor  

DOE Patents (OSTI)

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.

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

1996-02-06T23:59:59.000Z

278

Real-time neural network earthquake profile predictor  

DOE Patents (OSTI)

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.

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

1996-01-01T23:59:59.000Z

279

Implementing image processing applications on a real-time architecture  

E-Print Network (OSTI)

Abstract This paper presents three examples of realtime image processing applications that were implemented on a data- ow architecture developed at the ETCA. Low-level image processing is performed on a regular three-dimensional network of 1024 custom data- ow processors. Image features previously extracted in the low-level step are handled by a two-dimensional network of 12 general purpose processors. Fast prototyping of real-time image processing applications is achieved through a programming environment including a complete stream from functional programming speci cation to network con guration. A large class of algorithms can be implemented. Among them we describe a non-linear lter, a connected component labeling and a colored object tracking. Figure 1: The Functional Computer I.

G. Quenot; C. Coutelle; J. Serot; B. Zavidovique

1993-01-01T23:59:59.000Z

280

FIRST RESULTS FROM THE CATALINA REAL-TIME TRANSIENT SURVEY  

Science Conference Proceedings (OSTI)

We report on the results from the first six months of the Catalina Real-Time Transient Survey (CRTS). In order to search for optical transients (OTs) with timescales of minutes to years, the CRTS analyses data from the Catalina Sky Survey which repeatedly covers 26,000 of square degrees on the sky. The CRTS provides a public stream of transients that are bright enough to be followed up using small telescopes. Since the beginning of the survey, all CRTS transients have been made available to astronomers around the world in real time using HTML tables,RSS feeds, and VOEvents. As part of our public outreach program, the detections are now also available in Keyhole Markup Language through Google Sky. The initial discoveries include over 350 unique OTs rising more than 2 mag from past measurements. Sixty two of these are classified as supernovae (SNe), based on light curves, prior deep imaging and spectroscopic data. Seventy seven are due to cataclysmic variables (CVs; only 13 previously known), while an additional 100 transients were too infrequently sampled to distinguish between faint CVs and SNe. The remaining OTs include active galactic nucleus, blazars, high-proper-motions stars, highly variable stars (such as UV Ceti stars), and transients of an unknown nature. Our results suggest that there is a large population of SNe missed by many current SN surveys because of selection biases. These objects appear to be associated with faint host galaxies. We also discuss the unexpected discovery of white dwarf binary systems through dramatic eclipses.

Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R. [California Institute of Technology, 1200 E. California Blvd., CA 91225 (United States); Beshore, E.; Larson, S.; Boattini, A.; Gibbs, A.; Hill, R.; Kowalski, R. [Department of Planetary Sciences, University of Arizona, Lunar and Planetary Laboratory, 1629 E. University Blvd., Tucson, AZ 85721 (United States); Christensen, E. [Gemini Observatory, Casilla 603, La Serena (Chile); Catelan, M. [Pontificia Universidad Catolica de Chile, Departamento de AstronomIa y AstrofIsica, Av. Vicuna Mackena 4860, 782-0436 Macul, Santiago (Chile)

2009-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

9.03.10 -- Innovative Silicon Wafers, Real-Time Power Traders and Petascale & Exascale Supercomputers Geek-Up09.03.10 -- Innovative Silicon Wafers, Real-Time Power Traders and...

282

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

E-Print Network (OSTI)

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 ...

Roozbehani, Mardavij

283

The design and implementation of real-time environment monitoring systems based on wireless sensor networks  

Science Conference Proceedings (OSTI)

This research focuses on the implementation of a real-time environment monitoring system for environment detection using wireless sensor networks. The purpose of our research is to construct the system on the real-time environment with the technology ...

Kyung-Hoon Jung; Seok-Cheol Lee; Hyun-Suk Hwang; Chang-Soo Kim

2006-05-01T23:59:59.000Z

284

Armored RNA as virus surrogate in a real-time reverse transcriptase PCR assay proficiency panel  

E-Print Network (OSTI)

second ring test to evaluate RT-PCR detection methods. Vet.real-time, reverse transcription-PCR assays for detection ofHigh-throughput real-time RT-PCR assay to detect the exotic

Hietala, S K; Crossley, B M

2006-01-01T23:59:59.000Z

285

Quantification of enterococci and human adenoviruses in environmental samples by real-time PCR  

E-Print Network (OSTI)

uorogenic probe tech- nique (TaqMan PCR) to the detection of2003. Multiplexed, real-time PCR for quantitative detectionS. Sayler. 2003. Real-time PCR quanti?- cation of nitrifying

He, J W; Jiang, Sunny C

2005-01-01T23:59:59.000Z

286

Dynamic pricing and stabilization of supply and demand in modern electric power grids  

E-Print Network (OSTI)

The paper proposes a mechanism for real-time pricing of electricity in smart power grids, with price stability as the primary concern. In previous publications the authors argued that relaying the real-time wholesale market ...

Roozbehani, Mardavij

287

Hardware support for WCET analysis of hard real-time multicore systems  

Science Conference Proceedings (OSTI)

The increasing demand for new functionalities in current and future hard real-time embedded systems like automotive, avionics and space industries is driving an increase in the performance required in embedded processors. Multicore processors represent ... Keywords: analyzability, cache partitioning, hard real-time, interconnection network, multicore, real-time embedded systems, wcet

Marco Paolieri; Eduardo Quiñones; Francisco J. Cazorla; Guillem Bernat; Mateo Valero

2009-06-01T23:59:59.000Z

288

Can critical real-time services of public infrastructures run over ethernet and MPLS networks?  

Science Conference Proceedings (OSTI)

With the adoption of Ethernet-IP as the main technology for building end-to-end real-time networks, the requirement to deliver high availability, quality and secure services over Ethernet and MPLS has become strategic. Critical real-time traffic is generally ... Keywords: MPLS, critical systems, ethernet, real-time networks

Jaime Lloret; Francisco Javier Sanchez; Hugo Coll; Fernando Boronat

2008-05-01T23:59:59.000Z

289

Rapid Real-Time PCR Method for Bacterial Source Tracking Using DNA FRET Probes  

E-Print Network (OSTI)

Rapid Real-Time PCR Method for Bacterial Source Tracking Using DNA FRET Probes Jeff Brady, Research have developed a 10 locus genotyping method using real-time PCR with adjacent-hybridizing DNA: real-time PCR, FRET, Microbial Source Tracking #12;

290

An Automated Test Framework for Hard Real-Time Communication Systems  

E-Print Network (OSTI)

An Automated Test Framework for Hard Real-Time Communication Systems MITHUN HANUMANAHALLI NAGAIAH ii #12;An Automated Test Framework for Hard Real-Time Communication Systems Master thesis project are subjected to hard real-time communication require- ments. The purpose of this thesis is in introducing tools

Jantsch, Axel

291

Real time curriculum map for internal medicine residency  

E-Print Network (OSTI)

which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Background: To manage the voluminous formal curriculum content in a limited amount of structured teaching time, we describe the development and evaluation of a curriculum map for academic half days (AHD) in a core internal medicine residency program. Methods: We created a 3-year cyclical curriculum map (an educational tool combining the content, methodology and timetabling of structured teaching), comprising a matrix of topics under various specialties/themes and corresponding AHD hours. All topics were cross-matched against the ACP-ASIM in-training examination, and all hours were colour coded based on the categories of core competencies. Residents regularly updated the map on a real time basis. Results: There were 208 topics covered in 283 AHD hours. All topics represented core competencies with minimal duplication (78 % covered once in 3 years). Only 42 hours (15%) involved non-didactic teaching, which increased after implementation of the map (18–19 hours/year versus baseline 5 hours/year). Most AHD hours (78%) focused on medical expert competencies. Resident satisfaction (90 % response) was high throughout (range 3.64 ± 0.21, 3.84 ± 0.14 out of 4),

Roger Y Wong; J Mark Roberts; Roger Y Wong; J Mark Roberts

2007-01-01T23:59:59.000Z

292

Achieving Superior Plant Energy Performance Utilizing Real-time Data  

E-Print Network (OSTI)

After years of attempting to streamline operations in an effort to reduce operational costs, many industrial manufacturers are turning to strategic energy management as a potential money-saving strategy. In their efforts, managers face a number of significant barriers such as low awareness and expertise, elevated financial hurdle rate, lack of capital allocation and procurement constraints. In addition, energy efficiency efforts may be hampered by traditional single point energy reduction methods such as reviewing utility bills, getting equipment upgrade suggestions from vendors or one-time energy audits. Research demonstrates that these techniques have neither the visibility nor continuity to achieve energy reductions that are consistent and persistent. With the right Best Practices, however, using new methodologies and technologies unavailable only a few years ago, enterprises can achieve dramatic energy reductions and their resulting cost savings. These Best Practices are founded on 1) application of a systematic methodology for understanding where energy is used and how to reduce it; and 2) achieving visibility into sufficiently granular real-time information on key performance indicators; 3) integrating new technology into overall corporate strategy and processes to change behavior.

Subramanya, S.

2010-01-01T23:59:59.000Z

293

Gain Time Reclaiming in High Performance Real-Time Java Systems  

E-Print Network (OSTI)

The run-time characteristics of Java, such as high frequency of method invocation, dynamic dispatching and dynamic loading, make Java more difficult than other object-oriented programming languages, such as C++, for conducting Worst-Case Execution Time (WCET) analysis. To offer a more flexible way to develop object-oriented real-time applications in the realtime Java environment without loss of predicability and performance, we propose a novel gain time reclaiming framework integrated with WCET analysis. This paper demonstrates how to improve the utilisation and performance of the whole system by reclaiming gain time at run-time. Our approach shows that integrating WCET with gain time reclaiming can not only provide a more flexible environment, but it also does not necessarily result in unsafe or unpredictable timing behaviour.

Erik Yu-Shing Hu; Andy Wellings; Guillem Bernat

2003-01-01T23:59:59.000Z

294

Certification of Instrumentation Techniques for Resources Management of Real-Time Systems.  

E-Print Network (OSTI)

??Dynamic real-time systems have to meet timing requirements in unpredictable environments, where available resources might vary, running tasks might change, and task workloads might differ.… (more)

Tan, Zhenyu

2005-01-01T23:59:59.000Z

295

A Uniform Space–Time Gridding Algorithm for Comparison of Satellite Data Products: Characterization and Sensitivity Study  

Science Conference Proceedings (OSTI)

To overcome the complexities associated with combining or comparing multisensor data, a statistical gridding algorithm is introduced for projecting data from their unique instrument domain to a uniform space–time domain. The algorithm has two ...

Nadia Smith; W. Paul Menzel; Elisabeth Weisz; Andrew K. Heidinger; Bryan A. Baum

2013-01-01T23:59:59.000Z

296

Cybersecurity through Real-Time Distributed Control Systems  

SciTech Connect

Critical infrastructure sites and facilities are becoming increasingly dependent on interconnected physical and cyber-based real-time distributed control systems (RTDCSs). A mounting cybersecurity threat results from the nature of these ubiquitous and sometimes unrestrained communications interconnections. Much work is under way in numerous organizations to characterize the cyber threat, determine means to minimize risk, and develop mitigation strategies to address potential consequences. While it seems natural that a simple application of cyber-protection methods derived from corporate business information technology (IT) domain would lead to an acceptable solution, the reality is that the characteristics of RTDCSs make many of those methods inadequate and unsatisfactory or even harmful. A solution lies in developing a defense-in-depth approach that ranges from protection at communications interconnect levels ultimately to the control system s functional characteristics that are designed to maintain control in the face of malicious intrusion. This paper summarizes the nature of RTDCSs from a cybersecurity perspec tive and discusses issues, vulnerabilities, candidate mitigation approaches, and metrics.

Kisner, Roger A [ORNL; Manges, Wayne W [ORNL; MacIntyre, Lawrence Paul [ORNL; Nutaro, James J [ORNL; Munro Jr, John K [ORNL; Ewing, Paul D [ORNL; Howlader, Mostofa [ORNL; Kuruganti, Phani Teja [ORNL; Wallace, Richard M [ORNL; Olama, Mohammed M [ORNL

2010-04-01T23:59:59.000Z

297

Real Time Pricing Tie Line Control: A Case Study  

E-Print Network (OSTI)

A Tie Line Control System maintains the purchase quantity of electrical energy an industrial facility buys from a utility company. Implementing an advanced Tie Line Control system automates the buy versus make decision process for an industrial facility in order to optimize the use of energy by either a supply-side method or a demand-side method. If a facility possesses supply-side resources, such as self-generation, the user can choose to maximize on-site energy generation, when it is less expensive than the price offered by the utility. Conversely, when the price to buy energy is less expensive than it is to produce it, a facility may choose to back off on self-generation and buy more energy. One such Advanced Tie Line Control system, designed by Automation Applications, Incorporated (AAI) and installed at a pilot facility, utilizes a real-time pricing utility contract and provides savings approaching one million dollars per year. This paper is a case study of this system implementation and the results achieved.

Childress, R.

1999-05-01T23:59:59.000Z

298

Systemwide Energy Minimization in Real-Time Embedded Systems  

E-Print Network (OSTI)

Traditionally, dynamic voltage scaling (DVS) techniques have focused on minimizing the processor power consumption as opposed to the entire system energy. However, the slowdown resulting from DVS can increase the energy consumption of components like memory and network interfaces. Furthermore, leakage power consumption, which is increasing with the scaling device technology, must also be considered. In this paper, we present an algorithm to compute task slowdown factors based on the contribution of the processor leakage and standby energy consumption of the resources in the system. We combine slowdown with procrastination of task executions to extend sleep intervals which significantly reduces the leakage energy consumption. We show that the scheduling approach minimizes the total static and dynamic energy consumption of the systemwide resources. In this work, we consider a real-time system model using the Earliest Deadline First (EDF) policy. Our simulation experiments using randomly generated task sets show on an average 10% energy gains over traditional dynamic voltage scaling. Our procrastination scheme increases the average energy savings to 15%.

Ravindra Jejurikar; Rajesh Gupta

2004-01-01T23:59:59.000Z

299

Sampling apparatus for real-time alkali monitor  

DOE Patents (OSTI)

This report describes a sampling apparatus which provides representatives samples of high-temperature, high-pressure coal- derived process gases for analysis of alkali concentrations in either a gaseous phase or in a particulate-bearing gaseous phase by a real-time alkali monitor. The apparatus includes a sampling probe in the form of a ceramic tube that is inserted in the stream of combustion products for gathering a representative stream of gaseous products. Critical flow orifices are connected in series between the probe and an alkali monitor burner. A valved vent line connected in-line between the critical flow orifices is used to vent a significant percentage of the flow from the first critical flow orifice device to maintain the upstream pressure required to provide the desired flow rate through the second critical orifice to the alkali monitor burner. The gaseous products in the system between the probe and the burner is heated to inhibit condensation of alkali species. 2 figs.

French, W.E.; Logan, R.G.; Pineault, R.L.

1989-02-27T23:59:59.000Z

300

Real-Time Out-of-Core Rendering  

E-Print Network (OSTI)

Hierarchical levels of details (HLODs) have proven to be an efficient way to visualize complex environments and models even in an out-of-core system. Large objects are partitioned into a spatial hierarchy and for each node a level of detail is generated for efficient view-dependent rendering. To ensure correct matching between adjacent nodes in the hierarchy care has to be taken to prevent cracks along the cuts. This either leads to severe simplification constraints at the cuts and thus to a significantly higher number of triangles or the need for a costly runtime stitching of these nodes. In this paper we present an out-of-core visualization algorithm that overcomes this problem by filling the cracks generated by the simplification algorithm with appropriately shaded Fat Borders. Furthermore, several minor yet important improvements of previous approaches are made. This way we come up with a simple nevertheless efficient viewdependent rendering technique which allows for the natural incorporation of state-of-theart culling, simplification, compression and prefetching techniques leading to real-time rendering performance of the overall system. Several examples demonstrate the efficiency of our approach.

Michael Guthe; Pavel Borodin; Reinhard Klein

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Real-time multi-mode neutron multiplicity counter  

DOE Patents (OSTI)

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.

Rowland, Mark S; Alvarez, Raymond A

2013-02-26T23:59:59.000Z

302

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

Science Conference Proceedings (OSTI)

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.

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

303

Forming rotated SAR images by real-time motion compensation.  

SciTech Connect

Proper waveform parameter selection allows collecting Synthetic Aperture Radar (SAR) phase history data on a rotated grid in the Fourier Space of the scene being imaged. Subsequent image formation preserves the rotated geometry to allow SAR images to be formed at arbitrary rotation angles without the use of computationally expensive interpolation or resampling operations. This should be useful where control of image orientation is desired such as generating squinted stripmaps and VideoSAR applications, among others.

Doerry, Armin Walter

2012-12-01T23:59:59.000Z

304

Binary Segmentation of Video Sequences in Real Time Francisco J. HernandezLopez and Mariano Rivera  

E-Print Network (OSTI)

Binary Segmentation of Video Sequences in Real Time Francisco J. Hernandez­Lopez and Mariano Rivera [8, 9]. Francisco Hernandez-Lopez and Mariano Rivera, Binary Segmentation of Video Sequences in Real

Rivera, Mariano

305

GridLab: Enabling Applications on the Grid  

Science Conference Proceedings (OSTI)

Grid technology is widely emerging. Still, there is an eminent shortage of real Grid users, due to the absence of two important catalysts: First, a widely accepted vision on how applications can substantially benefit from Grids, and second a toolkit ...

Gabrielle Allen; Dave Angulo; Tom Goodale; Thilo Kielmann; André Merzky; Jarek Nabrzysky; Juliusz Pukacki; Michael Russell; Thomas Radke; Edward Seidel; John Shalf; Ian Taylor

2002-11-01T23:59:59.000Z

306

Optimal Real-time Dispatch for Integrated Energy Systems  

DOE Green Energy (OSTI)

This report describes the development and application of a dispatch optimization algorithm for integrated energy systems (IES) comprised of on-site cogeneration of heat and electricity, energy storage devices, and demand response opportunities. This work is intended to aid commercial and industrial sites in making use of modern computing power and optimization algorithms to make informed, near-optimal decisions under significant uncertainty and complex objective functions. The optimization algorithm uses a finite set of randomly generated future scenarios to approximate the true, stochastic future; constraints are included that prevent solutions to this approximate problem from deviating from solutions to the actual problem. The algorithm is then expressed as a mixed integer linear program, to which a powerful commercial solver is applied. A case study of United States Postal Service Processing and Distribution Centers (P&DC) in four cities and under three different electricity tariff structures is conducted to (1) determine the added value of optimal control to a cogeneration system over current, heuristic control strategies; (2) determine the value of limited electric load curtailment opportunities, with and without cogeneration; and (3) determine the trade-off between least-cost and least-carbon operations of a cogeneration system. Key results for the P&DC sites studied include (1) in locations where the average electricity and natural gas prices suggest a marginally profitable cogeneration system, optimal control can add up to 67% to the value of the cogeneration system; optimal control adds less value in locations where cogeneration is more clearly profitable; (2) optimal control under real-time pricing is (a) more complicated than under typical time-of-use tariffs and (b) at times necessary to make cogeneration economic at all; (3) limited electric load curtailment opportunities can be more valuable as a compliment to the cogeneration system than alone; and (4) most of the trade-off between least-cost and least-carbon IES is determined during the system design stage; for the IES system considered, there is little difference between least-cost control and least-carbon control.

Firestone, Ryan Michael

2007-05-31T23:59:59.000Z

307

Evaluation of Data Reduction Algorithms for Real-Time Analysis  

Science Conference Proceedings (OSTI)

Data reduction tools are developed and evaluated using a data analysis framework. Simple (nonadaptive) and intelligent (adaptive) thinning algorithms are applied to both synthetic and real data and the thinned datasets are ingested into an ...

Steven M. Lazarus; Michael E. Splitt; Michael D. Lueken; Rahul Ramachandran; Xiang Li; Sunil Movva; Sara J. Graves; Bradley T. Zavodsky

2010-06-01T23:59:59.000Z

308

Real-time road traffic forecasting using regime-switching space-time models and adaptive LASSO  

Science Conference Proceedings (OSTI)

Smart transportation technologies require real-time traffic prediction to be both fast and scalable to full urban networks. We discuss a method that is able to meet this challenge while accounting for nonlinear traffic dynamics and space-time dependencies ... Keywords: adaptive LASSO, real-time predictions, threshold regressions, traffic forecasting

Yiannis Kamarianakis; Wei Shen; Laura Wynter

2012-07-01T23:59:59.000Z

309

Killing Two Birds with One Stone: Can Real-Time Pricing Support Retail Competition and Demand Response?  

E-Print Network (OSTI)

are paying prices indexed to the real-time spot market, andusage at hourly prices indexed to the real-time and/or day-who pay prices indexed to the real-time market. Utility and

Barbose, Galen; Bharvirkar, Ranjit; Goldman, Charles; Hopper, Nicole; Neenan, Bernie

2006-01-01T23:59:59.000Z

310

Improved forecasting of time series data of real system using genetic programming  

Science Conference Proceedings (OSTI)

A study is made to improve short term forecasting of time series data of real system using Genetic Programming (GP) under the framework of time delayed embedding technique. GP based approach is used to make analytical model of time series data of real ... Keywords: genetic programming, state-space reconstruction, time series forecasting

Dilip P. Ahalpara

2010-07-01T23:59:59.000Z

311

Software support tools for high-speed real-time simulations  

Science Conference Proceedings (OSTI)

Frame times as low as 1-2 microseconds are needed for high-speed real-time (HSRT) simulations of power-electronic systems. To achieve such short frame times it is necessary to use special processing platforms and both digital signal processors (DSPs) ... Keywords: electric circuits, real-time simulation, simulation software

J. J. Zenor; R. E. Crosbie; R. Bednar; D. Word; N. G. Hingorani

2009-07-01T23:59:59.000Z

312

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

Science Conference Proceedings (OSTI)

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.

Omitaomu, Olufemi A [ORNL

2013-01-01T23:59:59.000Z

313

Real Time Quantitative Radiological Monitoring Equipment for Environmental Assessment  

SciTech Connect

The Idaho National Laboratory (INL) has developed a suite of systems that rapidly scan, analyze, and characterize radiological contamination in soil. These systems have been successfully deployed at several Department of Energy (DOE) laboratories and Cold War Legacy closure sites. Traditionally, these systems have been used during the characterization and remediation of radiologically contaminated soils and surfaces; however, subsequent to the terrorist attacks of September 11, 2001, the applications of these systems have expanded to include homeland security operations for first response, continuing assessment and verification of cleanup activities in the event of the detonation of a radiological dispersal device. The core system components are a detector, a spectral analyzer, and a global positioning system (GPS). The system is computer controlled by menu-driven, user-friendly custom software designed for a technician-level operator. A wide variety of detectors have been used including several configurations of sodium iodide (NaI) and high-purity germanium (HPGe) detectors, and a large area proportional counter designed for the detection of x-rays from actinides such as Am-241 and Pu-238. Systems have been deployed from several platforms including a small all-terrain vehicle (ATV), hand-pushed carts, a backpack mounted unit, and an excavator mounted unit used where personnel safety considerations are paramount. The INL has advanced this concept, and expanded the system functionality to create an integrated, field-deployed analytical system through the use of tailored analysis and operations software. Customized, site specific software is assembled from a supporting toolbox of algorithms that streamline the data acquisition, analysis and reporting process. These algorithms include region specific spectral stripping, automated energy calibration, background subtraction, activity calculations based on measured detector efficiencies, and on-line data quality checks and measures. These analyses are combined to provide real-time areal activity and coverage maps that are displayed to the operator as the survey progresses. The flexible functionality of the INL systems are well suited to multiple roles supporting homeland security needs.

John R. Giles; Lyle G. Roybal; Michael V. Carpenter

2006-03-01T23:59:59.000Z

314

Real-Time Face Detection in Color Video  

Science Conference Proceedings (OSTI)

In this paper, we propose a novel and fast facedetection algorithm for detecting face in color videosequences. This algorithm can be integrated into a real-timesurveillance or a video retrieval or indexing system.We focus on both speed and accuracy in ...

Szu-Hao Huang; Shang-Hong Lai

2004-01-01T23:59:59.000Z

315

A Real-Time Global Sea Surface Temperature Analysis  

Science Conference Proceedings (OSTI)

A global monthly sea surface temperature analysis is described which uses real-lime in situ (ship and buoy) and satellite data. The method combines the advantages of both types of data: the ground truth of in situ data and the improved coverage ...

Richard W. Reynolds

1988-01-01T23:59:59.000Z

316

Non-markovian analysis for model driven engineering of real-time software  

Science Conference Proceedings (OSTI)

Quantitative evaluation of models with stochastic timings can decisively support schedulability analysis and performance engineering of real-time concurrent systems. These tasks require modeling formalisms and solution techniques that can encompass stochastic ... Keywords: model driven development, non-markovian stochastic analysis, real-time systems, software performance engineering

Laura Carnevali; Marco Paolieri; Alessandro Santoni; Enrico Vicario

2013-04-01T23:59:59.000Z

317

Progress towards a low-cost high-speed real-time multi-rate simulator  

Science Conference Proceedings (OSTI)

Recent research has focused on developing techniques that use field-programmable gate arrays (FPGAs) to support real-time simulation with frame times of a few microseconds or less. These techniques can be used to simulate, for example, modern power electronic ... Keywords: FPGA, distributed, high-speed, multi-rate, real-time

John Zenor; Dale Word; Richard Bednar; Roy Crosbie; Narain Hingorani

2010-07-01T23:59:59.000Z

318

An Approach to Platform Independent Real-Time Programming: (2) Practical Application  

Science Conference Proceedings (OSTI)

In a previously published companion paper a method for extending programming languages with timing constructs was proposed. It was shown that the extension enables the construction of real-time programs that can be proven correct independently of ... Keywords: distributed systems, platform independence, real-time programming, scheduling

Jozef Hooman; Onno Van Roosmalen

2000-07-01T23:59:59.000Z

319

Hardware support in a middleware for distributed and real-time embedded applications  

Science Conference Proceedings (OSTI)

One of the main challenges in the development of tools and methodologies for a multiprocessor real-time embedded system is to reuse already developed software, but at the same time obtaining low memory footprint, low energy consumption, and minimal area, ... Keywords: MPSoCs, embedded applications, energy efficiency, middleware, real-time systems

Elias T. Silva, Jr; Flávio R. Wagner; Edison P. Freitas; Carlos E. Pereira

2006-08-01T23:59:59.000Z

320

Patterns for Automatic Generation of Soft Real-time System Models  

Science Conference Proceedings (OSTI)

Worst-case assumptions about the timing of systems are often too conservative when analyzing distributed soft real-time systems as they lead to over-dimensioned and expensive products. For these systems, a certain percentage of deadline misses is often ... Keywords: Modeling patterns, pattern-based system description, soft real-time systems, stochastic model

Oana Florescu; Jeroen Voeten; Bart Theelen; Henk Corporaal

2009-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Real Time Location Tool For Precision Tracking Of Passive UHF RFID Tags In Two Dimensions.  

E-Print Network (OSTI)

??Bredow, Jonathan This thesis addresses this problem of a precise RTLS (Real Time Location System) by implementing a Passive UHF RFID system. A software is… (more)

Kenarangui, Nasir

2011-01-01T23:59:59.000Z

322

System level energy management in networked real-time embedded systems.  

E-Print Network (OSTI)

??Real-time embedded systems play a prominent role in a variety of applications ranging from medical sensors in human body to signaling sensors in war fields.… (more)

Gathala, Sudha Anil Kumar

2009-01-01T23:59:59.000Z

323

Search Method for Real-time Knowledge Discovery Modeled on the ...  

Search Method for Real-time Knowledge Discovery Modeled on the Human Brain Oak Ridge National Laboratory. Contact ORNL About This Technology

324

Method and Apparatus for In-Situ Real Time Characterization of ...  

Method and Apparatus for In-Situ Real Time Characterization of Energy Storage and Energy Conversion Devices Idaho National Laboratory. Contact INL ...

325

A time-cognizant dynamic crash recovery scheme suitable for distributed real-time main memory databases  

Science Conference Proceedings (OSTI)

Rapid and efficient recovery in the event of site crash is very important for distributed real-time main memory database system. In this paper, the recovery correctness criteria of distributed real-time main memory databases are first given. Then, a ...

Yingyuan Xiao; Yunsheng Liu; Xiangyang Chen; Xiaofeng Liu

2006-09-01T23:59:59.000Z

326

Towards A Real-time Cognitive Radio Network Testbed: Architecture, Hardware Platform, and  

E-Print Network (OSTI)

International Conference on Smart Grid Communications (SmartGrid- Comms), 2010, submitted for publication. [19 estimation in smart grid," in the first IEEE International Conference on Smart Grid Communications (SmartGrid

Qiu, Robert Caiming

327

Time Synchronization Attack in Smart Grid-Part II: Cross Layer Detection Mechanism  

E-Print Network (OSTI)

A novel time synchronization attack (TSA) on wide area monitoring systems in smart grid has been identified in the first part of this paper. A cross layer detection mechanism is proposed to combat TSA in part II of this paper. In the physical layer, we propose a GPS carrier signal noise ratio (C/No) based spoofing detection technique. In addition, a patch-monopole hybrid antenna is applied to receive GPS signal. By computing the standard deviation of the C/No difference from two GPS receivers, a priori probability of spoofing detection is fed to the upper layer, where power system state is estimated and controlled. A trustworthiness based evaluation method is applied to identify the PMU being under TSA. Both the physical layer and upper layer algorithms are integrated to detect the TSA, thus forming a cross layer mechanism. Experiment is carried out to verify the effectiveness of the proposed TSA detection algorithm.

Zhang, Zhenghao; Dimitrovski, Aleksandar D; Li, Husheng

2012-01-01T23:59:59.000Z

328

Annex A Metrics for the Smart Grid System Report  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Annex A Annex A Metrics for the Smart Grid System Report A.iii Table of Contents Introduction ........................................................................................................................................... A.1 Metric #1: The Fraction of Customers and Total Load Served by Real-Time Pricing, Critical Peak Pricing, and Time-of-Use Pricing ........................................................................................ A.2 Metric #2: Real-Time System Operations Data Sharing ...................................................................... A.9 Metric #3: Standard Distributed Resource Connection Policies .......................................................... A.18 Metric #4: Regulatory Recovery for Smart Grid Investments ............................................................. A.23

329

2012 SG Peer Review - Real-Time Distribution Feed Performance Monitoring, Advisory Control, and Health Management System - James Stoupis, ABB Inc.  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Real-Time Distribution Feeder Performance Real-Time Distribution Feeder Performance Monitoring, Advisory Control, and Health Management System James Stoupis ABB Inc., US Corporate Research Center June 7, 2012 December 2008 Real-Time Distribution Feeder Performance Monitoring Objective Life-cycle Funding Summary ($K) Prior to FY 12 FY12, authorized FY13, requested Out-year(s) $200 k $1.1 M $1.3 M $400k Technical Scope To innovatively leverage advanced sensing, monitoring, and control technologies to enhance asset utilization and grid reliability Install state-of-the-art data collection, monitoring, and sensing equipment in distribution substations and on distribution feeders Develop new feeder monitoring, advisory control, and asset health applications deployed on current circuits, and future circuits with DERs

330

Toward effective service composition for real-time SOA ... - Springer  

Science Conference Proceedings (OSTI)

Mar 10, 2010 ... GuranteedResponseTime(asi .wsj ) and the coordinates. Lattiude ... Web service asi .wsj can be obtained from the timing spec- ification of the ...

331

Many-core architectures with time predictable execution Support for hard real-time applications  

E-Print Network (OSTI)

Hybrid control systems are a growing domain of application. They are pervasive and their complexity is increasing rapidly. Distributed control systems for future "Intelligent Grid" and renewable energy generation systems ...

Kinsy, Michel A

2013-01-01T23:59:59.000Z

332

Real-time State Estimation on Micro-grids Ying Hu, Anthony Kuh, Aleksandar Kavcic  

E-Print Network (OSTI)

transmission and distribution networks which may include HVDC and MVDC, energy storage, microgrids, renewable

Kavcic, Aleksandar

333

Neural-optimal control algorithm for real-time regulation of in-line storage in combined sewer systems  

Science Conference Proceedings (OSTI)

Attempts at implementing real-time control systems as a cost-effective means of minimizing the pollution impacts of untreated combined sewer overflows have largely been unsustained due to the complexity of the real-time control problem. Optimal real-time ... Keywords: Artificial intelligence, Combined sewers, Hydraulic sewer models, Neural networks, Optimal control, Real-time control, Urban stormwater management

Suseno Darsono; John W. Labadie

2007-09-01T23:59:59.000Z

334

A Cost Effective Real-Time Tracking System Prototype Using Integrated GPS/GPRS Module  

Science Conference Proceedings (OSTI)

This paper presents a real time tracking system that provides accurate localizations of the tracked vehicle with low cost. The system is implemented using GM862 cellular quad band module. A monitoring server and a graphical user interface on a website ... Keywords: GPS, GSM, ITS, Real Time Tracking

Wael El-Medany; Alauddin Al-Omary; Riyadh Al-Hakim; Sufyan Al-Irhayim; Mustafa Nusaif

2010-09-01T23:59:59.000Z

335

An optimal k-exclusion real-time locking protocol motivated by multi-GPU systems  

Science Conference Proceedings (OSTI)

Graphics processing units (GPUs) are becoming increasingly important in today's platforms as their growing generality allows for them to be used as powerful co-processors. In previous work, the authors showed that GPUs may be integrated into real-time ... Keywords: GPGPU, Global scheduling, Real-time systems, Semaphore protocols

Glenn A. Elliott; James H. Anderson

2013-03-01T23:59:59.000Z

336

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

E-Print Network (OSTI)

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 in order to achieve thermal-constrained energy-efficient design. However, this does not work. The existing

Wang, Shengquan

337

A multiple camera system with real-time volume reconstruction for articulated skeleton pose tracking  

Science Conference Proceedings (OSTI)

We present a multi-camera system for recovering skeleton body pose, by performing real-time volume reconstruction and using a hierarchical stochastic pose search algorithm. Different from many multicamera systems that require a few connected workstations, ... Keywords: multi-camera system, pose estimation, real-time volume reconstruction

Zheng Zhang; Hock Soon Seah; Chee Kwang Quah; Alex Ong; Khalid Jabbar

2011-01-01T23:59:59.000Z

338

On compressing data in wireless sensor networks for energy efficiency and real time delivery  

Science Conference Proceedings (OSTI)

Wireless sensor networks possess significant limitations in storage, bandwidth, processing, and energy. Additionally, real-time sensor network applications such as monitoring poisonous gas leaks cannot tolerate high latency. While some good data compression ... Keywords: Compression, Latency, Real-time, Wireless sensor network

Tommy Szalapski; Sanjay Madria

2013-06-01T23:59:59.000Z

339

Robust and accurate global vision system for real time tracking of multiple mobile robots  

Science Conference Proceedings (OSTI)

This paper presents a new global vision system for tracking of multiple mobile robots. To the best knowledge of the authors it outperforms all existing global vision systems with respect to measurement precision and accuracy, high speed and real time ... Keywords: Global vision, Intelligent space, Multirobot systems, Real time object tracking, Robot soccer

Mišel Brezak; Ivan Petrovi?; Edouard Ivanjko

2008-03-01T23:59:59.000Z

340

A real-time shadow approach for an augmented reality application using shadow volumes  

Science Conference Proceedings (OSTI)

Shadows add a level of realism to a rendered image. Moreover, they are used as visual clues to determine spacial relationships and real-time shadows will gain importance in current real-time computer graphics applications for this reason. Twenty-five ... Keywords: augmented reality, shadow volumes

Michael Haller; Stephan Drab; Werner Hartmann

2003-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Hybrid power management in real time embedded systems: an interplay of DVFS and DPM techniques  

Science Conference Proceedings (OSTI)

Energy-aware scheduling of real time applications over multiprocessor systems is considered in this paper. Early research reports that while various energy-saving policies, for instance Dynamic Power Management (DPM) and Dynamic Voltage & Frequency ... Keywords: Dynamic power management, Dynamic voltage & frequency scaling, Energy, Machine learning, Multiprocessor scheduling, Power, Real time systems

Muhammad Khurram Bhatti; Cécile Belleudy; Michel Auguin

2011-03-01T23:59:59.000Z

342

ATOM: An object-based formal method for real-time systems  

Science Conference Proceedings (OSTI)

An object based formal method for the development of real‐time systems, called ATOM, is presented. The method is an integration of the real‐time formal technique TAM (Temporal Agent Model) with an industry‐strength structured ...

Hussein Zedan; Antonio Cau; Zhiqiang Chen; Hongji Yang

1999-06-01T23:59:59.000Z

343

Real-time observation of lithium fibers growth inside a nanoscale lithium-ion battery  

E-Print Network (OSTI)

Real-time observation of lithium fibers growth inside a nanoscale lithium-ion battery Hessam August 2011; accepted 29 August 2011; published online 22 September 2011) Formation of lithium dendrite to observe the real-time nucleation and growth of the lithium fibers inside a nanoscale Li-ion battery. Our

Endres. William J.

344

Reactive and Real-Time Systems Course: How to Get the Most Out of it  

Science Conference Proceedings (OSTI)

The paper describes the syllabus and the students’ projects from a graduate course on the subject of “Reactive and Real-Time Systems”, taught at Tel-Aviv University and at the Open University of Israel. The course focuses on the development ... Keywords: course syllabus, reactive real-time systems, scheduling, synchronous languages, verification

Tal Lev-Ami; Shmuel S. Tyszberowicz

2003-09-01T23:59:59.000Z

345

A Framework for Middleware Supporting Real-Time Wide-Area Distributed Computing  

E-Print Network (OSTI)

computing is to effect impor- tant output actions within precisely specified time- windows. In RT DC systems-Oriented Real-time Distributed Computing), Washington D.C., April 2002, pp. 288-294. [Kop97] Kopetz, H., 'Real specification. 1. Introduction The history of distributed computing (DC) spans more than three decades

California at San Diego, University of

346

A STEP-compliant computer numerical control based on real-time Ethernet for circuit boardmilling  

Science Conference Proceedings (OSTI)

With the globalisation of manufacturing industry, extendable and networked computer numerical control systems that can support bidirectional and seamless data exchange are in urgent need. This paper presents a STEP-NC compliant controller based on Real-time ... Keywords: Gerber, Real-time Ethernet RTE, STEP-NC, circuit board milling, computer numerical control CNC

Ke Wang; Riliang Liu; Xun Xu; Chenrui Zhang; Lin Yang

2012-12-01T23:59:59.000Z

347

The Fixed Priority Scheduling Problem for Energy Harvesting Real-Time Systems  

E-Print Network (OSTI)

The Fixed Priority Scheduling Problem for Energy Harvesting Real-Time Systems Younès Chandarli to establish a schedulability test for a fixed priority real-time scheduling problem with energy constraints problem for energy harvesting systems was the one of Mossé [1]. The problem was solved under a very

348

Impact of storage on the efficiency and prices in real-time electricity markets  

Science Conference Proceedings (OSTI)

We study the effect of energy-storage systems in dynamic real-time electricity markets. We consider that demand and renewable generation are stochastic, that real-time production is affected by ramping constraints, and that market players seek to selfishly ... Keywords: electricity pricing, energy economics, energy storage system, market efficiency

Nicolas Gast, Jean-Yves Le Boudec, Alexandre Proutière, Dan-Cristian Tomozei

2013-01-01T23:59:59.000Z

349

Eventrons: a safe programming construct for high-frequency hard real-time applications  

Science Conference Proceedings (OSTI)

While real-time garbage collection has achieved worst-case latencies on the order of a millisecond, this technology is approaching its practical limits. For tasks requiring extremely low latency, and especially periodic tasks with frequencies above 1 ... Keywords: allocation, real-time, scheduling

Daniel Spoonhower; Joshua Auerbach; David F. Bacon; Perry Cheng; David Grove

2006-06-01T23:59:59.000Z

350

Real-Time 2D NMR Identification of Analytes Undergoing Continuous Chromatographic Separation  

E-Print Network (OSTI)

Real-Time 2D NMR Identification of Analytes Undergoing Continuous Chromatographic Separation Boaz of multidimensional nuclear magnetic resonance (NMR) spectra within a single scan. A promising application opened up, with the real-time acquisition of a series of 2D 1 H NMR spectra arising from a mixture of compounds subject

Frydman, Lucio

351

Hard Real-Time Garbage Collection on Chip Multi-Processors  

E-Print Network (OSTI)

Hard Real-Time Garbage Collection on Chip Multi-Processors DISSERTATION submitted in partial are however not suited for use in hard real-time systems. As a failure in these systems can have catastrophic of the respective system. In the past few years, methods for garbage collection that are suitable for use in hard

352

A Novel Gain Time Reclaiming Framework Integrating WCET Analysis for Object-Oriented Real-Time Systems  

E-Print Network (OSTI)

This paper proposes a novel gain time reclaiming framework integrating WCET analysis for objectoriented real-time systems in order to provide greater flexibility and without loss of the predictability and e#- ciency of the whole system. In this paper we present an approach which demonstrates how to improve the utilisation and overall performance of the whole system by reclaiming gain time at run-time. Our approach shows that integrating WCET with gain time reclaiming not only can provide a more flexible environment to develop object-oriented real-time applications, but it also does not necessarily result in unsafe or unpredictable timing analysis.

Erik Yu-shing Hu; Andy Wellings; Guillem Bernat

2002-01-01T23:59:59.000Z

353

CERTS Review REAL-TIME PRICE FORECAST WITH BIG DATA A STATE SPACE APPROACH  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Review Review REAL-TIME PRICE FORECAST WITH BIG DATA A STATE SPACE APPROACH Lang Tong (PI), Robert J. Thomas, Yuting Ji, and Jinsub Kim School of Electrical and Computer Engineering, Cornell University Jie Mei, Georgia Institute of Technology August 7, 2013 CERTS Review DATA QUALITY AND ITS EFFECTS ON MARKET OPERATIONS DENY OF SERVICE ATTACK ON REAL-TIME ELECTRICITY MARKET COVER UP PROTECTION AGAINST TOPOLOGY ATTACK Lang Tong (PI), Robert J. Thomas, and Jinsub Kim Cornell University August 8, 2013 Project overview  Objectives  Accurate short-term probabilistic forecasting of real-time LMP.  Incorporate real-time measurements (e.g. SCADA/PMU).  Scalable computation techniques.  Summary of results  A real-time LMP model with forecasting and measurement

354

Wireless technology collects real-time information from oil and gas wells  

NLE Websites -- All DOE Office Websites (Extended Search)

Wireless technology collects real-time information from oil and gas 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 continuous electromagnetic data on the reservoir conditions, enabling economical and effective monitoring and analysis. April 3, 2012 One of several active projects, LANL and Chevron co-developed INFICOMM(tm), a wireless technology used to collect real-time temperature and pressure information from sensors in oil and gas wells, including very deep wells already producing oil and gas and drilling operations for new wells. One of several active projects, LANL and Chevron co-developed INFICOMM(tm), a wireless technology used to collect real-time temperature and pressure information from sensors in oil and gas wells, including very deep wells

355

Is Real-Time Pricing Green?: The Environmental Impacts of Electricity Demand Variance  

E-Print Network (OSTI)

re?ects time-varying production costs. In particular, real-re?ects time-varying production costs. 1 In particular, theyhour variation in production costs. An environmental group

Holland, Stephen P.; Mansur, Erin T.

2004-01-01T23:59:59.000Z

356

A non-intrusive fault tolerant framework for mission critical real-time systems  

E-Print Network (OSTI)

The need for dependable real-time systems for embedded application is growing, and, at the same time, so does the amount of functionality required from these systems. As testing can only show the presence of errors, not ...

Gorelov, Sébastien

2005-01-01T23:59:59.000Z

357

Real-Time Operational Forecasting on Shipboard of the Iceland-Faeroe Frontal Variability  

Science Conference Proceedings (OSTI)

Real-time operational shipboard forecasts of Iceland-Faeroe frontal variability were executed for the first time with a primitive equation mode. High quality, intensive hydrographic surveys during August 1993 were used for initialization, ...

A. R. Robinson; H. G. Arango; W. G. Leslie; A. J. Miller; A. Warn-Varnas; P-M. Poulain

1996-02-01T23:59:59.000Z

358

Optimal Real-time Dispatch for Integrated Energy Systems  

E-Print Network (OSTI)

is restricted to a maximum demand level determined by thedemand charge ($/kW maximum demand) site demand generatorparameters: load demand, maximum time until rescheduled

Firestone, Ryan Michael

2007-01-01T23:59:59.000Z

359

Recent Developments in the Real-time Monitoring of Austenite ...  

Science Conference Proceedings (OSTI)

Analysis of Residence Time Distribution (RTD) of Fluid Flows in a Four Strand Delta-shaped Tundish Operating Under Isothermal and Non-isothermal ...

360

Abstract--Wind power generation is growing rapidly. However, maintaining the wind turbine connection to grid is a real  

E-Print Network (OSTI)

induction generator (DFIG). However, no attention has been given to the impact of internal faults) that interface the DFIG with the grid. This paper investigates the impact of the rotor side converter (RSC) IGBT flashover fault on the common coupling (PCC) reactive power and the FRT capability of the DFIG. A proper

Pota, Himanshu Roy

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Demand Response Design based on a Stackelberg Game in Smart Grid  

E-Print Network (OSTI)

Demand Response Design based on a Stackelberg Game in Smart Grid Sung-Guk Yoon, Young-June Choi and communications technology (ICT), that is, smart grid. With help of a two-way communication infrastructure, a real- time demand response can be applied. A smart grid network consisting of one retailer and many customers

Bahk, Saewoong

362

A Comprehensive Statistically-Based Method to Interpret Real-Time Flowing Measurements  

DOE Green Energy (OSTI)

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.

Pinan Dawkrajai; Keita Yoshioka; Analis A. Romero; Ding Zhu; A.D. Hill; Larry W. Lake

2005-10-01T23:59:59.000Z

363

Roberts: Reconfigurable Platform for Benchmarking Real-time Systems  

E-Print Network (OSTI)

Department of Electrical and Electronic Engineering Imperial College London, UK p-time properties and energy consumption. The benchmarking takes into account system workload and environmental-test, and with support for on-line monitoring of the response time, output values and energy consumption. The proposed

Luk, Wayne

364

Real-Time Sky-View Factor Calculation and Approximation  

Science Conference Proceedings (OSTI)

Previously, the acquisition of sky-view factor data for climate studies has been time consuming and dependent on postprocessing. However, advances in technology now mean that techniques using fish-eye imagery can be algorithmically processed in ...

L. Chapman; J. E. Thornes

2004-05-01T23:59:59.000Z

365

Optimal Real-time Dispatch for Integrated Energy Systems  

E-Print Network (OSTI)

The cost of energy consumption at peak times is higher thantime constraints, variable maintenance costs, fixed-batch energytime-step of the timespan • E(cost()) is the expected energy

Firestone, Ryan Michael

2007-01-01T23:59:59.000Z

366

Bayesian Rainfall Variability Analysis in West Africa along Cross Sections in Space–Time Grid Boxes  

Science Conference Proceedings (OSTI)

This paper proposes an approach for analyzing rainfall variability over West Africa during the 1950–90 period. Three grid boxes, corresponding to three selected areas over West Africa, have been constructed. For each candidate area the set of ...

Dominique Tapsoba; Mario Haché; Luc Perreault; Bernard Bobée

2004-03-01T23:59:59.000Z

367

Real time quantum dynamics in the Heisenberg picture  

SciTech Connect

In order to understand dynamics in the Heisenberg picture, a study is made of ordinary single particle quantum mechanics where the methods used can be compared with solving the Schroedinger equation numerically. The methods are generalized to field theory. Both analytic and numerical strategies are developed for solving the Heisenberg equations on a time lattice. The time development of an initial gaussian wave function is considered in various potentials in order to study both quantum tunnelling phenomena and the quantum roll. 9 refs., 1 fig. (LEW)

Cooper, F.

1986-01-01T23:59:59.000Z

368

DHARMA: A Tool for Evaluating Dynamic Scheduling Algorithms for Real-time Multiprocessor Systems  

E-Print Network (OSTI)

A majority of today's real-time systems assume a priori knowledge of task characteristics and hence are based on static designs which contribute to their high cost and inflexibility. The next generation hard real-time systems must be designed to be dynamic and flexible. This provides the motivation to study various dynamic scheduling proposals. In this paper, we discuss the design and implementation of a tool, called DHARMA, which is an attempt towards satisfying such requirements. The tool provides an environment to study various dynamic scheduling algorithms with or without fault-tolerance requirements and associated resource reclaiming algorithms in a multiprocessor real-time system.

G. Manimaran; Anand Manikutty; C. Siva Ram Murthy

1998-01-01T23:59:59.000Z

369

A Real-Time Four-Dimensional Doppler Dealiasing Scheme  

Science Conference Proceedings (OSTI)

A new dealiasing scheme uses the full four-dimensionality available in an operational Doppler radar data stream. It examines one tilt angle at a time, beginning at the highest elevation where clutter is minimal and gate-to-gate shear is typically ...

Curtis N. James; Robert A. Houze Jr.

2001-10-01T23:59:59.000Z

370

Real-time Registration of Paper Watermarks Paul F Whelan  

E-Print Network (OSTI)

the top-hat image shown in Figure 3c. 4 Paper with Laid and Chain Lines If we perform a white top registration. These strips are added to either side of the paper and represent 3% of the total amount of paper-time Registration of Paper Watermarks 26 (a) First threshold of white top-hat: marker image. (b) Second threshold

Whelan, Paul F.

371

A Secure and Private Communication Scheme for Smart Grid Components  

A smart grid is a connected group of power consumers whose power meters are able to measure their power consumption in real time and report that measurement back to the power supplier. Smart grids enable power suppliers to monitor power consumption ...

372

Microsecond delays on non-real time operating systems  

SciTech Connect

We have developed microsecond timing and profiling software that runs on standard Windows and Linux based operating systems. This software is orders of magnitudes better than most of the standard native functions in wide use. Our software libraries calibrate RDTSC in microseconds or seconds to provide two different types of delays: a ''Guaranteed Minimum'' and a precision ''Long Delay'', which releases to the kernel. Both return profiling information of the actual delay.

Angstadt, R.; Estrada, J.; Diehl, H.T.; Flaugher, B.; Johnson, M.; /Fermilab

2007-05-01T23:59:59.000Z

373

Steps to Establish a Real-Time Transmission Monitoring System for  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Steps to Establish a Real-Time Transmission Monitoring System for Steps to Establish a Real-Time Transmission Monitoring System for Transmission Owners and Operators within the Eastern and Western Interconnections Steps to Establish a Real-Time Transmission Monitoring System for Transmission Owners and Operators within the Eastern and Western Interconnections Steps to establish a real-time transmission monitoring system for transmission owners and operators within the Eastern and Western interconnections: a report to congress pursuant to section 1839 of the Energy Policy Act of 2005. Section 1839 of the Energy Policy Act of 2005 (EPAct 2005) directs the Secretary of Energy (DOE) and the Federal Energy Regulatory Commission (Commission) to study and report to Congress on the steps that must be taken to establish a system to make available to all transmission owners

374

Deployment of Demand Response as a Real-Time Resource in Organized Markets  

Open Energy Info (EERE)

Deployment of Demand Response as a Real-Time Resource in Organized Markets Deployment of Demand Response as a Real-Time Resource in Organized Markets Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Deployment of Demand Response as a Real-Time Resource in Organized Markets Focus Area: Crosscutting Topics: Potentials & Scenarios Website: www.sciencedirect.com/science/article/pii/S1040619008000973 Equivalent URI: cleanenergysolutions.org/content/deployment-demand-response-real-time- Language: English Policies: "Deployment Programs,Regulations" is not in the list of possible values (Deployment Programs, Financial Incentives, Regulations) for this property. DeploymentPrograms: Technical Assistance Regulations: Resource Integration Planning This article examines the use of demand response as a dispatchable resource

375

NREL: MIDC/NWTC M2 Real-Time Weather Display  

NLE Websites -- All DOE Office Websites (Extended Search)

NWTC M2 Real-Time Weather Display This page should automatically refresh every minute. A text based weather display for PDAs is also available. NREL MIDC NWTC M2...

376

A Real-Time Scheme for the Prediction of Forecast Skill  

Science Conference Proceedings (OSTI)

During the winter of 1988/89, a real-time experimental scheme to predict skill of the ECMWF operational forecast was devised. The scheme was based on statistical relations between skill scores (the predictands) and a number of predictors ...

Franco Molteni; T. N. Palmer

1991-04-01T23:59:59.000Z

377

Real-Time Variational Assimilation of Hydrologic and Hydrometeorological Data into Operational Hydrologic Forecasting  

Science Conference Proceedings (OSTI)

Variational assimilation (VAR) of hydrologic and hydrometeorological data into operational hydrologic forecasting is explored. The data assimilated are the hourly real-time observations of streamflow and precipitation, and climatological ...

Dong-Jun Seo; Victor Koren; Neftali Cajina

2003-06-01T23:59:59.000Z

378

Real-Time Inference of Mental States from Facial Expressions and Upper Body Gestures  

E-Print Network (OSTI)

We present a real-time system for detecting facial action units and inferring emotional states from head and shoulder gestures and facial expressions. The dynamic system uses three levels of inference on progressively ...

Baltrusaitis, Tadas

379

Real-time network traffic prediction based on a multiscale decomposition  

Science Conference Proceedings (OSTI)

The presence of the complex scaling behavior in network traffic makes accurate forecasting of the traffic a challenging task. In this paper we propose a multiscale decomposition approach to real time traffic prediction. The raw traffic data is first ...

Guoqiang Mao

2005-04-01T23:59:59.000Z

380

Captured motion data processing for real time synthesis of sign language  

Science Conference Proceedings (OSTI)

This study proposes a roadmap for the creation and specification of a virtual humanoid capable of performing expressive gestures in real time. We present a gesture motion data acquisition protocol capable of handling the main articulators involved in ...

Alexis Heloir; Sylvie Gibet; Franck Multon; Nicolas Courty

2005-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

NOAA's nowCOAST Web Mapping Portal to Near-Real-Time Coastal...  

NLE Websites -- All DOE Office Websites (Extended Search)

NOAA's nowCOAST Web Mapping Portal to Near-Real-Time Coastal Information Ocean Data Tools Technical Guide Map Gallery Regional Planning Feedback Ocean You are here Data.gov ...

382

Real-Time Ocean Wind Vector Retrieval from Marine Radar Image Sequences Acquired at Grazing Angle  

Science Conference Proceedings (OSTI)

This paper proposes a novel algorithm for retrieving the ocean wind vector from marine radar image sequences in real time. It is presented as an alternative to mitigate anemometer problems, such as blockage, shadowing, and turbulence. Since wind ...

Raul Vicen-Bueno; Jochen Horstmann; Eric Terril; Tony de Paolo; Jens Dannenberg

2013-01-01T23:59:59.000Z

383

Quasi-parallel network applications in real-time distribution management system  

Science Conference Proceedings (OSTI)

In modern distribution management systems (DMSs), the real-time calculation of the network's state plays an important role for the operation of the network. High sophisticated algorithms for the estimation and calculation of the system's ...

Izudin Dzafic; Hans-Theo Neisius

2012-03-01T23:59:59.000Z

384

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

E-Print Network (OSTI)

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 ...

Oefinger, Matthew Blake, 1976-

2003-01-01T23:59:59.000Z

385

Real-Time Multimodel Superensemble Forecasts of Atlantic Tropical Systems of 1999  

Science Conference Proceedings (OSTI)

In this paper, Atlantic hurricane forecasts for the year 1999 are addressed. The methodology for these forecasts is called the multimodel superensemble. This statistical method makes use of the real-time forecasts provided by a number of ...

C. Eric Williford; T. N. Krishnamurti; Ricardo Correa Torres; Steven Cocke; Zaphiris Christidis; T. S. Vijaya Kumar

2003-08-01T23:59:59.000Z

386

Examination of a Real-Time 3DVAR Analysis System in the Hazardous Weather Testbed  

Science Conference Proceedings (OSTI)

Forecasters and research meteorologists tested a real-time three-dimensional variational data assimilation (3DVAR) system in the Hazardous Weather Testbed during the springs of 2010-2012 to determine its capabilities to assist in the warning ...

Travis M. Smith; Jidong Gao; Kristin M. Calhoun; David J. Stensrud; Kevin L. Manross; Kiel L. Ortega; Chenghao Fu; Darrel M. Kingfield; Kimberly L. Elmore; Valliappa Lakshmanan; Christopher Riedel

387

Real-Time Correction of Spatially Nonuniform Bias in Radar Rainfall Data Using Rain Gauge Measurements  

Science Conference Proceedings (OSTI)

A procedure for real-time correction of spatially nonuniform bias in radar rainfall data using rain gauge measurements is described. Developed to complement the existing gauge-based bias correction procedures used in the National Weather Service (...

Dong-Jun Seo; J. P. Breidenbach

2002-04-01T23:59:59.000Z

388

Energy-Efficient, Utility Accrual Real-Time Scheduling Under the Unimodal Arbitrary Arrival Model  

Science Conference Proceedings (OSTI)

We present an energy-efficient real-time scheduling algorithm called EUA*, for the unimodal arbitrary arrival model (or UAM). UAM embodies a "stronger" adversary than most arrival models. The algorithm considers application activities that are subject ...

Haisang Wu; Binoy Ravindran; E. Douglas Jensen

2005-03-01T23:59:59.000Z

389

Dual-Regression Retrieval Algorithm for Real-Time Processing of Satellite Ultraspectral Radiances  

Science Conference Proceedings (OSTI)

A fast physically based dual-regression (DR) method is developed to produce, in real time, accurate profile and surface- and cloud-property retrievals from satellite ultraspectral radiances observed for both clear- and cloudy-sky conditions. The ...

William L. Smith Sr.; Elisabeth Weisz; Stanislav V. Kireev; Daniel K. Zhou; Zhenglong Li; Eva E. Borbas

2012-08-01T23:59:59.000Z

390

Real-Time Forecasting of the Western Australian Summertime Trough: Evaluation of a New Regional Model  

Science Conference Proceedings (OSTI)

The real-time prediction of the location, strength, and structure of the summertime heat trough is a major forecasting problem over Western Australia. Maximum temperatures, wind strength and direction along the west coast, low-level coastal cloud,...

Lance M. Leslie; Terry C. L. Skinner

1994-09-01T23:59:59.000Z

391

Improving energy saving in hard real time systems via a modified dual priority scheduling  

Science Conference Proceedings (OSTI)

In this paper, we present a modification of the Dual Priority scheduling algorithm, for hard real-time systems, that takes advantage of its performance to efficiently improve energy saving. The approach exploit the priority scheme to lengthen the runtime ...

M. Angels Moncusi; Alex Arenas; Jesus Labarta

2001-12-01T23:59:59.000Z

392

Enhanced modeling : real-time simulation and modeling of graph based problems on interactive workbenches  

E-Print Network (OSTI)

This thesis presents a methodology and framework for designing systems that apply real-time simulation of computational models throughout the modeling and parameter modification stages of problem solving for graph based ...

Chak, Daniel, 1980-

2004-01-01T23:59:59.000Z

393

Real-Time Water Vapor Maps from a GPS Surface Network: Construction, Validation, and Applications  

Science Conference Proceedings (OSTI)

In this paper the construction of real-time integrated water vapor (IWV) maps from a surface network of global positioning system (GPS) receivers is presented. The IWV maps are constructed using a two-dimensional variational technique with a ...

Siebren de Haan; Iwan Holleman; Albert A. M. Holtslag

2009-07-01T23:59:59.000Z

394

Catching fish in the stream: real time analysis of audience behavior in social media  

Science Conference Proceedings (OSTI)

In this interactive poster, we describe a system we designed for identifying and tracking the behavior of distinct audiences in social media streams. Keywords: audience behavior, real-time analysis, social media

Yu-Ru Lin; Drew Margolin; Brian Keegan; Mauro Martino; Sasha Goodman; David Lazer

2013-02-01T23:59:59.000Z

395

Use of a Real-Time Computer Graphics System in Analysis and Forecasting  

Science Conference Proceedings (OSTI)

Real-time computer graphics systems are being introduced into weather stations throughout the United States. A sample of student forecasters used such a system to solve specific specialized forecasting problems. Results suggest that for some ...

John J. Cahir; John M. Norman; Dale A. Lowry

1981-03-01T23:59:59.000Z

396

Real-Time Airborne Analysis of Aircraft Data Supporting Operational Hurricane Forecasting  

Science Conference Proceedings (OSTI)

The Hurricane Research Division has developed a technique for real-time airborne analysis of aircraft data from reconnaissance and research flights in tropical cyclones. The technique uses an onboard workstation that analyzes flight-level ...

Joseph S. Griffin; Robert W. Burpee; Frank D. Marks Jr.; James L. Franklin

1992-09-01T23:59:59.000Z

397

Real-time timbral organisation: Selecting samples based upon similarity1  

Science Conference Proceedings (OSTI)

A comparison is made between two systems of real-time sample selection using timbral proximity that has relevance for live performance. Sound files in large sample libraries are analysed for audio features (amplitude RMS, spectral centroid, spectral ...

Arne Eigenfeldt; Philippe Pasquier

2010-08-01T23:59:59.000Z

398

Real-time programming and the big ideas of computational literacy  

E-Print Network (OSTI)

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 ...

Hancock, Christopher Michael, 1961-

2003-01-01T23:59:59.000Z

399

Real-Time Monitoring and Prediction of Modes of Coherent Synoptic to Intraseasonal Tropical Variability  

Science Conference Proceedings (OSTI)

A technique of near-real-time monitoring and prediction of various modes of coherent synoptic to intraseasonal zonally propagating tropical variability is developed. It involves Fourier filtering of a daily updated global dataset for the specific ...

Matthew Wheeler; Klaus M. Weickmann

2001-11-01T23:59:59.000Z

400

Joint Reliability and Energy Management for Real-Time Embedded Systems.  

E-Print Network (OSTI)

?? The Dynamic Voltage Scaling (DVS) technique is the basis of numerous state-of-the-art energy management schemes proposed for real-time embedded systems. However, recent research has… (more)

Zhao, Baoxian

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Real-Time Bias Reduction for Satellite-Based Precipitation Estimates  

Science Conference Proceedings (OSTI)

A new approach to reduce biases in satellite-based estimates in real time is proposed and tested in this study. Currently satellite-based precipitation estimates exhibit considerable biases, and there have been many efforts to reduce these biases ...

Yudong Tian; Christa D. Peters-Lidard; John B. Eylander

2010-12-01T23:59:59.000Z

402

A Real-Time Hurricane Surface Wind Forecasting Model: Formulation and Verification  

Science Conference Proceedings (OSTI)

A real-time hurricane wind forecast model is developed by 1) incorporating an asymmetric effect into the Holland hurricane wind model; 2) using the National Oceanic and Atmospheric Administration (NOAA)/National Hurricane Center’s (NHC) hurricane ...

Lian Xie; Shaowu Bao; Leonard J. Pietrafesa; Kristen Foley; Montserrat Fuentes

2006-05-01T23:59:59.000Z

403

Search Method for Real-time Knowledge Discovery Modeled on the ...  

ORNL 2011-G00262/jcn UT-B ID 200601732 08.2011 Search Method for Real-time Knowledge Discovery Modeled on the Human Brain Technology Summary A new ...

404

Real-time quantitative PCR for enteric adenovirus serotype 40 in environmental waters  

E-Print Network (OSTI)

adenovirus detection by PCR as an index of human viruses.polluted waters by nested PCR amplification. Appl. Environ.real-time quantitative PCR. J. Clin. Microbiol. Wigand, R. ,

Jiang, Sunny C; Dezfulian, H; Chu, W P

2005-01-01T23:59:59.000Z

405

Integer programming-based real-time scheduler in semiconductor manufacturing  

Science Conference Proceedings (OSTI)

This paper demonstrates how an integer programming-based real-time scheduling heuristic approach can be applied for semiconductor manufacturing. Two integer programming formulations of a simplified version of this problem are proposed to model (1) a ...

Myoungsoo Ham; Young Hoon Lee; John W. Fowler

2009-12-01T23:59:59.000Z

406

Beyond kWh and kW demand: Understanding the new real-time electric...  

NLE Websites -- All DOE Office Websites (Extended Search)

Beyond kWh and kW demand: Understanding the new real-time electric power measurement system in LBNL Building 90 Speaker(s): Alex McEachern Date: January 14, 2010 - 12:00pm...

407

Development of a Real-Time Interactive Storm-Monitoring Program in Phoenix, Arizona  

Science Conference Proceedings (OSTI)

The Arizona Thunderstorm Chase (AZTC) program, a cooperative project between the National Weather Service (NWS) in Phoenix and Arizona State University (ASU), uses trained ASU students as mobile observers with real-time communications ability to ...

Randall S. Cerveny; Steven M. Calderon; Michael W. Franjevic; Norman C. Hoffmann

1992-06-01T23:59:59.000Z

408

Real-Time Prediction of the Lake Breeze on the Western Shore of Lake Michigan  

Science Conference Proceedings (OSTI)

A forecast verification study of the occurrence and inland penetration of the lake breeze on the western shore of Lake Michigan was conducted. A real-time version of The Pennsylvania State University–National Center for Atmospheric Research fifth-...

Paul J. Roebber; Mark G. Gehring

2000-06-01T23:59:59.000Z

409

Real-Time Loop Scheduling with Energy Optimization Via DVS and ...  

Science Conference Proceedings (OSTI)

Real-Time Loop Scheduling with Energy. Optimization Via DVS and ABB for Multi -core. Embedded System. Guochen Hua1, Meng Wang1, Zili Shao1, Hui Liu2, ...

410

Experimental measurements and design guidelines for real-time software encryption in multimedia wireless LANs  

Science Conference Proceedings (OSTI)

To secure interactive multimedia applications in wireless LANs (WLANs), it is pertinent to implement real time cryptographic services. In this paper we evaluate the use of software based encryption algorithms that are implemented in the ...

Aura Ganz; Se Hyun Park; Zvi Ganz

1999-01-01T23:59:59.000Z

411

Real-time Expression Cloning using Appearance Models Barry-John Theobald  

E-Print Network (OSTI)

expressions to be transferred and rendered in real-time. 3) The mapped expression can be constrained to have of a complex interaction between various anatomical layers, which include bone, muscle, sub- cutaneous fat

Theobald, Barry-John

412

A Real-Time Climate Information System for the Midwestern United States  

Science Conference Proceedings (OSTI)

The Midwestern Climate Information System (MICIS) is a near real-time system which provides access to a wide variety of climate information products. These include current temperature and precipitation data for several hundred midwestern United ...

Kenneth E. Kunkel; Stanley A. Changnon; Carl G. Lonnquist; James R. Angel

1990-11-01T23:59:59.000Z

413

Atmospheric Release Advisory Capability: Real-Time Modeling of Airborne Hazardous Materials  

Science Conference Proceedings (OSTI)

The Atmospheric Release Advisory Capability (ARAC) at Lawrence Livermore National Laboratory is a centralized federal project for assessing atmospheric releases of hazardous materials in real time. Since ARAC began making assessments in 1974, the ...

Thomas J. Sullivan; James S. Ellis; Connee S. Foster; Kevin T. Foster; Ronald L. Baskett; John S. Nasstrom; Walter W. Schalk III

1993-12-01T23:59:59.000Z

414

Real-Time Hazard Approximation of Long-Lasting Convective Storms Using Emergency Data  

Science Conference Proceedings (OSTI)

Convective storms cause several types of damage, including economic and ecological losses, every year. This paper focuses on an automatic hazard-level determination of convective storms based on a largely unused information source: real-time ...

Pekka J. Rossi; Vesa Hasu; Kalle Halmevaara; Antti Mäkelä; Jarmo Koistinen; Heikki Pohjola

2013-03-01T23:59:59.000Z

415

May 21, 2011 - Getting Useful Real Time Feedback About Your Program Webinar (text version)  

NLE Websites -- All DOE Office Websites (Extended Search)

1, 2011 - Getting Useful Real Time Feedback About 1, 2011 - Getting Useful Real Time Feedback About Your Program Webinar (text version) Below is the text version of the Webinar titled "Getting Useful Real Time Feedback About Your Program" originally presented on May 21, 2011. (Please note: portions of the transcript below may be incomplete where indicated with an underlined placeholder space. Please refer to the webinar presentation recording and slides for additional information.) Operator: The broadcast is now starting. All attendees are listen only mode. Sargon de Jesus: Good afternoon. My name is Sargon de Jesus and I am with ERG, a contractor supporting the U.S. Department of Energy Better Buildings program. I wanna thank you for joining today's webinar titled "Getting useful real time feedback about your

416

Reliability-aware power management for parallel real-time applications with precedence constraints  

Science Conference Proceedings (OSTI)

The negative effects of the Dynamic Voltage and Frequency Scaling (DVFS) technique on the system reliability has recently promoted the research on reliability-aware power management (RAPM). RAPM aims at reducing the system energy consumption while preserving ... Keywords: shared-recovery based scheme, reliability aware power management, parallel real-time application, precedence constraint, dynamic voltage technique, frequency scaling technique, parallel real time application, shared memory multiprocessor system, NP-hard problem, RAPM heuristics, dynamic slack, system reliability

Yifeng Guo; Dakai Zhu; H. Aydin

2011-07-01T23:59:59.000Z

417

An Operational Real-Time Ocean Sensor Network in the Gulf of Maine  

Science Conference Proceedings (OSTI)

The Gulf of Maine Ocean Observing System (GoMOOS) was established in the summer of 2001 as a prototype real-time observing system that now includes eleven solar-powered buoys with physical and optical sensors, four shore-based long-range HF radar surface ... Keywords: CODAR, GoMOOS, Gulf of Maine, Ocean Observing Systems, Sensor networks, neural networks, ocean optics, real-time

Neal R. Pettigrew; Collin S. Roesler; Francois Neville; Heather E. Deese

2008-03-01T23:59:59.000Z

418

Fine grain pipeline systems for real-time motion and stereo-vision computation  

Science Conference Proceedings (OSTI)

Image processing systems require high computational load that motivates the design of specific hardware architectures in order to arrive at real-time platforms. We adopt innovative design techniques based on the intensive utilisation of the inherent ... Keywords: FPGAs, algorithm parallelisation, cognitive vision models, customised architectures, data flow architectures, field programmable gate arrays, fine-grain pipelining, high performance architectures, image processing, on-chip integration, optical flow, pipelined techniques, real-time motion, reconfigurable hardware, stereo vision, superscalar units

Javier Diaz; Eduardo Ros; Alberto Prieto; Francisco J. Pelayo

2007-04-01T23:59:59.000Z

419

Real-Time Per-Cycle Energy Consumption Measurement of Digital Systems  

E-Print Network (OSTI)

This technical report introduces a real-time per-clock-cycle energy measurement technique for power analysis and reduction of synchronous state machines. This technique guarantees accuracy with a sampling rate of twice the clock frequency under spiky current draw common in digital systems. In addition, it acquires the energy consumption profile in real-time, thus, not requiring repeated operation of the target system.

Naehyuck Chang; Kwanho Kim

2000-01-01T23:59:59.000Z

420

An abductive expert system for interpretation of real-time data  

SciTech Connect

This paper describes DINT, a data interpretation expert system which can provide an explanation of the real-time operating state of a substation to its operators. DINT is based on a generalized version of the set covering model for diagnostic problem solving. This abductive reasoning model is an object-based, frame-like knowledge representation paradigm. Test cases illustrate the application of the model to the real-time operation of a substation.

Dabbaghchi, I.; Gursky, R.J. (American Electric Power Service Corp., Columbus, OH (United States))

1993-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Dynamic Scheduling of Skippable Periodic Tasks with Energy Efficiency in Weakly Hard Real-Time System  

E-Print Network (OSTI)

Energy consumption is a critical design issue in real-time systems, especially in battery- operated systems. Maintaining high performance, while extending the battery life between charges is an interesting challenge for system designers. Dynamic Voltage Scaling (DVS) allows a processor to dynamically change speed and voltage at run time, thereby saving energy by spreading run cycles into idle time. Knowing when to use full power and when not, requires the cooperation of the operating system scheduler. Usually, higher processor voltage and frequency leads to higher system throughput while energy reduction can be obtained using lower voltage and frequency. Instead of lowering processor voltage and frequency as much as possible, energy efficient real-time scheduling adjusts voltage and frequency according to some optimization criteria, such as low energy consumption or high throughput, while it meets the timing constraints of the real-time tasks. As the quantity and functional complexity of battery powered porta...

Baskaran, Santhi

2010-01-01T23:59:59.000Z

422

Real-time PCR quantification of human adenoviruses in urban rivers indicates genome prevalence but low infectivity  

E-Print Network (OSTI)

integrated cell culture-nested PCR procedure, p. 547. Abstr.samples by real-time PCR. Appl. Environ. Microbiol. 71:2250–Real time quantitative PCR for enteric adenovirus serotype

Choi, S; Jiang, Sunny C

2005-01-01T23:59:59.000Z

423

A real-time self-tuning fuzzy controller through scaling factor adjustment for the steam generator of NPP  

Science Conference Proceedings (OSTI)

Keywords: fuzzy controller, instantaneous system performance, real-time, scaling factor, self-tuning, steam generator, variable reference tuning index

Chul-Hwan Jung; Chang-Shik Ham; Kuhn-Il Lee

1995-08-01T23:59:59.000Z

424

Real-Time Middleware Concepts for Automating the Development of Distributed Embedded Control Systems  

E-Print Network (OSTI)

Developing distributed hard real-time applications is a complex endeavor. This paper presents two orthogonal and complementary approaches and their integration --- Giotto and the AOCS framework. Each of these approaches by itself leads to significant efficiency gains in the development of the software for embedded control systems. Giotto allows the high-level, platform independent specification of the timing behavior of possibly distributed embedded control applications with hard real-time requirements. It represents an innovative middleware concept for this category of applications which strictly separates platform-independent functionality and timing concerns from platform-dependent scheduling and communication issues. Giotto leaves open how the functionality of an application is implemented. Ideally, this should be done by reusing components 1 targeted at real-time control systems. In this spirit, the AOCS framework 2 project defines and implements a set of reusable object-orien...

T.B. Brown; T.A. Henzinger; C.M. Kirsch; A. Pasetti; W. Pree

2001-01-01T23:59:59.000Z

425

Smart Grid  

Science Conference Proceedings (OSTI)

... smart manufacturing systems to cost-effectively and ... accurate, and reliable real-time sensors, the ... unprecedented number of variable energy sources ...

2012-12-18T23:59:59.000Z

426

Spontaneous synchrony in power-grid networks  

E-Print Network (OSTI)

An imperative condition for the functioning of a power-grid network is that its power generators remain synchronized. Disturbances can prompt desynchronization, which is a process that has been involved in large power outages. Here we derive a condition under which the desired synchronous state of a power grid is stable, and use this condition to identify tunable parameters of the generators that are determinants of spontaneous synchronization. Our analysis gives rise to an approach to specify parameter assignments that can enhance synchronization of any given network, which we demonstrate for a selection of both test systems and real power grids. Because our results concern spontaneous synchronization, they are relevant both for reducing dependence on conventional control devices, thus offering an additional layer of protection given that most power outages involve equipment or operational errors, and for contributing to the development of "smart grids" that can recover from failures in real time.

Motter, Adilson E; Anghel, Marian; Nishikawa, Takashi

2013-01-01T23:59:59.000Z

427

Smart Grid Communications: Overview of Research Challenges, Solutions, and Standardization Activities  

E-Print Network (OSTI)

Optimization of energy consumption in future intelligent energy networks (or Smart Grids) will be based on grid-integrated near-real-time communications between various grid elements in generation, transmission, distribution and loads. This paper discusses some of the challenges and opportunities of communications research in the areas of smart grid and smart metering. In particular, we focus on some of the key communications challenges for realizing interoperable and future-proof smart grid/metering networks, smart grid security and privacy, and how some of the existing networking technologies can be applied to energy management. Finally, we also discuss the coordinated standardization efforts in Europe to harmonize communications standards and protocols.

Fan, Zhong; Gormus, Sedat; Efthymiou, Costas; Kalogridis, Georgios; Sooriyabandara, Mahesh; Zhu, Ziming; Lambotharan, Sangarapillai; Chin, Woon Hau

2011-01-01T23:59:59.000Z

428

NSFCONACyT: Integration of Adaptive Fault Tolerance and Scheduling in RealTime Systems. Research Proposal  

E-Print Network (OSTI)

­CONACyT: Integration of Adaptive Fault Tolerance and Scheduling in Real­Time Systems. 1 Research Proposal Integration of Adaptive Fault Tolerance and Scheduling in Real­Time Systems Submitted to the National Science Foundation; ________________________________________________________________________________ NSF­CONACyT: Integration of Adaptive Fault Tolerance and Scheduling in Real­Time Systems. 2 Contents 1

Mejia-Alvarez, Pedro

429

Real-time Building Energy Simulation using EnergyPlus and the Building  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-time Building Energy Simulation using EnergyPlus and the Building Real-time Building Energy Simulation using EnergyPlus and the Building Controls Virtual Test Bed Title Real-time Building Energy Simulation using EnergyPlus and the Building Controls Virtual Test Bed Publication Type Conference Proceedings LBNL Report Number LBNL-5390E Year of Publication 2011 Authors Pang, Xiufeng, Prajesh Bhattacharya, Zheng O'Neill, Philip Haves, Michael Wetter, and Trevor Bailey Conference Name Proc. of the 12th IBPSA Conference Pagination p. 2890-2896 Date Published 11/2011 Conference Location Sydney, Australia Abstract 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.

430

New Algorithms for Resource Reclaiming from Precedence Constrained Tasks in Multiprocessor Real-Time Systems  

E-Print Network (OSTI)

The scheduling of tasks in multiprocessor real-time systems has attracted many researchers in the recent past. Tasks in these systems have deadlines to be met, and most of the real-time scheduling algorithms use worst case computation times to schedule these tasks. Many resources will be left unused if the tasks are dispatched purely based on the schedule produced by these scheduling algorithms, since most of the tasks will take lesser time to execute than their respective worst case computation times. Resource reclaiming refers to the problem of reclaiming the resources left unused by a real-time task when it takes lesser time to execute than its worst case computation time. In this paper, we propose two algorithms to reclaim these resources from real-time tasks that are constrained by precedence relations and resource requirements, in shared memory multiprocessor systems. We introduce a notion called restriction vector for each task which captures its resource and precedence constraints with other tasks. This will help not only in the efficient implementation of the algorithms, but also in obtaining an improvement in performance over the reclaiming algorithms proposed in earlier work [2]. We compare our resource reclaiming algorithms with the earlier algorithms and, by experimental studies, show that they reclaim more

G. Manimaran; C. Siva Ram Murthy; Machiraju Vijay; Krithi Ramamritham

1997-01-01T23:59:59.000Z

431

A framework for simulation-based real-time whole building performance  

NLE Websites -- All DOE Office Websites (Extended Search)

A framework for simulation-based real-time whole building performance A framework for simulation-based real-time whole building performance assessment Title A framework for simulation-based real-time whole building performance assessment Publication Type Journal Article Refereed Designation Unknown LBNL Report Number 0360-1323 Year of Publication 2012 Authors Pang, Xiufeng, Michael Wetter, Prajesh Bhattacharya, and Philip Haves Journal Building and Environment Volume 54 Start Page 100 Pagination 100-108 Date Published 08/2012 ISSN 0360-1323 Keywords building controls virtual test bed, building performance, energy modeling, energyplus, real-time building simulation Abstract 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. One approach to addressing this problems is to compare the predictions of an energy simulation model of the building to the measured performance and analyze significant differences to infer the presence and location of faults. This paper presents a framework that allows a comparison of building actual performance and expected performance in real time. The realization of the framework utilized the EnergyPlus, the Building Controls Virtual Test Bed (BCVTB) and the Energy Management and Control System (EMCS) was developed. An EnergyPlus model that represents expected performance of a building runs in real time and reports the predicted building performance at each time step. The BCVTB is used as the software platform to acquire relevant inputs from the EMCS through a BACnet interface and send them to the EnergyPlus and to a database for archiving. A proof-of-concept demonstration is also presented.

432

Machining force regression models and real time control when turning MET 4 metallized coating  

Science Conference Proceedings (OSTI)

Due to their wide range of application, metallized coatings are widely used in industry, both for wear resistance or corrosion protection. In order to obtain the required geometric precision, machining these coatings is many times required. As their ... Keywords: control system, experiments design, force, metallized coating, real time, regression, turning

Mihaiela Iliescu; Luigi Vl?d?reanu; Marius Soceanu

2011-07-01T23:59:59.000Z

433

Fast candidate generation for real-time tweet search with bloom filter chains  

Science Conference Proceedings (OSTI)

The rise of social media and other forms of user-generated content have created the demand for real-time search: against a high-velocity stream of incoming documents, users desire a list of relevant results at the time the query is issued. In the context ... Keywords: Scalability, bloom filters, efficiency, top-k retrieval, tweet search

Nima Asadi; Jimmy Lin

2013-07-01T23:59:59.000Z

434

Real-Time Wind Turbine Emulator Suitable for Power Quality and Dynamic Control Studies  

E-Print Network (OSTI)

1 Real-Time Wind Turbine Emulator Suitable for Power Quality and Dynamic Control Studies Dale S. L. Dolan, Student Member, IEEE, P. W. Lehn, Member IEEE Abstract-- Wind turbines are increasingly becoming-time Wind Turbine Emulator, which emulates the dynamic torque produced by an actual turbine has been

Lehn, Peter W.

435

DESIGN REAL-TIME JAVA REMOTE METHOD INVOCATION: A SERVER-CENTRIC APPROACH  

E-Print Network (OSTI)

for incoming calls to the exported remote object. The others are worker threads for handling each accepted-time worker threads for handling incoming calls to exported remote objects. We have modified the run() methodDESIGN REAL-TIME JAVA REMOTE METHOD INVOCATION: A SERVER-CENTRIC APPROACH Sangig Rho Samsung

Choi, Byung K.

436

Effect of real-time electricity pricing on renewable generators and system emissions  

E-Print Network (OSTI)

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 ...

Connolly, Jeremiah P. (Jeremiah Peter)

2008-01-01T23:59:59.000Z

437

Efficient and Precise Cache Behavior Prediction for Real-TimeSystems  

Science Conference Proceedings (OSTI)

Abstract interpretation is a technique for the static detection of dynamic properties of programs. It is semantics based, that is, it computes approximative properties of the semantics of programs. On this basis, it supports correctness proofs of ... Keywords: abstract interpretation, cache behavior prediction, cache memories, program analysis, real time applications, worst case execution time prediction

Christian Ferdinand; Reinhard Wilhelm

1999-12-01T23:59:59.000Z

438

IEA-Technology Roadmap: Smart Grids | Open Energy Information  

Open Energy Info (EERE)

IEA-Technology Roadmap: Smart Grids IEA-Technology Roadmap: Smart Grids Jump to: navigation, search Tool Summary LAUNCH TOOL Name: IEA-Technology Roadmap: Smart Grids Agency/Company /Organization: International Energy Agency Sector: Energy Topics: Low emission development planning, Pathways analysis, Technology characterizations Resource Type: Publications, Guide/manual Website: www.iea.org/papers/2011/smartgrids_roadmap.pdf Cost: Free IEA-Technology Roadmap: Smart Grids Screenshot References: Technology Roadmap: Smart Grid[1] "This roadmap focuses on smart grids - the infrastructure that enables the delivery of power from generation sources to end-uses to be monitored and managed in real time. Smart grids are required to enable the use of a range of low-carbon technologies, such as variable renewable resources and

439

DOE REAL-TIME SEISMIC MONITORING AT ENHANCED GEOTHERMAL SYSTEM SITES | Open  

Open Energy Info (EERE)

REAL-TIME SEISMIC MONITORING AT ENHANCED GEOTHERMAL SYSTEM SITES REAL-TIME SEISMIC MONITORING AT ENHANCED GEOTHERMAL SYSTEM SITES Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: DOE REAL-TIME SEISMIC MONITORING AT ENHANCED GEOTHERMAL SYSTEM SITES Details Activities (6) Areas (6) Regions (0) Abstract: Lawrence Berkeley National Laboratory (LBNL) at the direction of the United States Department of Energy (DOE) Geothermal Technologies EGS Program is installing, operating, and/or interfacing seismic arrays at multiple Enhanced Geothermal Systems (EGS) sites. The overall goal is to gather high resolution seismicity data before, during and after stimulation activities at the EGS projects. This will include both surface and borehole deployments (as necessary in available boreholes) to provide high quality

440

Geek-Up[09.03.10] -- Innovative Silicon Wafers, Real-Time Power Traders and  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

09.03.10] -- Innovative Silicon Wafers, Real-Time Power 09.03.10] -- Innovative Silicon Wafers, Real-Time Power Traders and Petascale & Exascale Supercomputers Geek-Up[09.03.10] -- Innovative Silicon Wafers, Real-Time Power Traders and Petascale & Exascale Supercomputers September 3, 2010 - 12:38pm Addthis A silver wafer reflects the face of NREL research scientist Hao-Chih Yuan, before the wafer is washed with a mix of acids. The acids etch holes, absorbing light and turning the wafer black. | Photo Credit: Dennis Schroeder, NREL A silver wafer reflects the face of NREL research scientist Hao-Chih Yuan, before the wafer is washed with a mix of acids. The acids etch holes, absorbing light and turning the wafer black. | Photo Credit: Dennis Schroeder, NREL Elizabeth Meckes Elizabeth Meckes Director of User Experience & Digital Technologies, Office of Public

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

ME EET Seminar: Real-time Predictive Control: From Automotive Systems to  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-time Predictive Control: From Automotive Systems to Real-time Predictive Control: From Automotive Systems to Energy Efficient Buildings Speaker(s): Francesco Borrelli Date: February 10, 2010 - 12:00pm Location: 90-3122 Hybrid systems are heterogeneous systems that exhibit both continuous and discrete dynamics. Over the last eight years we have focused on the development of systematic, real-time, predictive controller synthesis techniques for hybrid systems with constraints. In this talk I will first summarize our theoretical efforts starting from constrained optimal control design for hybrid systems with constraints. Then, I will show how these results can be used in order to develop a theory for distributed predictive control for large-scale systems. The second part of the talk presents a range of applications where the proposed techniques were used with great

442

Real-Time Power Control of Data Centers for Providing Regulation Service  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-Time Power Control of Data Centers for Providing Regulation Service Real-Time Power Control of Data Centers for Providing Regulation Service Speaker(s): Ayse K. Coskun Date: November 19, 2013 - 12:00pm - 1:00pm Location: 90-3122 Seminar Host/Point of Contact: Girish Ghatikar Today's US power markets offer new opportunities for the energy consumers to reduce their energy costs by first promising an average consumption rate for the next hour and then by following a regulation signal broadcast by the independent system operators (ISOs), who need to match supply and demand in real time in presence of volatile and intermittent renewable energy generation. This talk proposes a management framework for the data centers to participate in the power markets. First, I will discuss how to solve the data center "regulation service (RS)" optimization problem to

443

Real-time MSE measurements for current profile control on KSTAR  

SciTech Connect

To step up from current day fusion experiments to power producing fusion reactors, it is necessary to control long pulse, burning plasmas. Stability and confinement properties of tokamak fusion reactors are determined by the current or q profile. In order to control the q profile, it is necessary to measure it in real-time. A real-time motional Stark effect diagnostic is being developed at Korean Superconducting Tokamak for Advanced Research for this purpose. This paper focuses on 3 topics important for real-time measurements: minimize the use of ad hoc parameters, minimize external influences and a robust and fast analysis algorithm. Specifically, we have looked into extracting the retardance of the photo-elastic modulators from the signal itself, minimizing the influence of overlapping beam spectra by optimizing the optical filter design and a multi-channel, multiharmonic phase locking algorithm.

De Bock, M. F. M.; Aussems, D.; Huijgen, R.; Scheffer, M. [Eindhoven University of Technology, Eindhoven (Netherlands); Chung, J. [National Fusion Research Institute, Daejeon (Korea, Republic of)

2012-10-15T23:59:59.000Z

444

Geek-Up[09.03.10] -- Innovative Silicon Wafers, Real-Time Power Traders and  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Geek-Up[09.03.10] -- Innovative Silicon Wafers, Real-Time Power Geek-Up[09.03.10] -- Innovative Silicon Wafers, Real-Time Power Traders and Petascale & Exascale Supercomputers Geek-Up[09.03.10] -- Innovative Silicon Wafers, Real-Time Power Traders and Petascale & Exascale Supercomputers September 3, 2010 - 12:38pm Addthis A silver wafer reflects the face of NREL research scientist Hao-Chih Yuan, before the wafer is washed with a mix of acids. The acids etch holes, absorbing light and turning the wafer black. | Photo Credit: Dennis Schroeder, NREL A silver wafer reflects the face of NREL research scientist Hao-Chih Yuan, before the wafer is washed with a mix of acids. The acids etch holes, absorbing light and turning the wafer black. | Photo Credit: Dennis Schroeder, NREL Elizabeth Meckes Elizabeth Meckes Director of User Experience & Digital Technologies, Office of Public

445

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

DOE Green Energy (OSTI)

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

George Atanasoff

2010-10-29T23:59:59.000Z

446

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

SciTech Connect

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

George Atanasoff

2010-10-29T23:59:59.000Z

447

California ISO Real-Time Voltage Security Assessment (VSA) Summary Report  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-Time Real-Time Voltage Security Assessment (VSA) Summary Report Prepared For: California Energy Commission Public Interest Energy Research Program Prepared By: Lawrence Berkeley National Laboratory Consortium for Electric Reliability Technology Solutions APPENDIX B October 2008 CEC-500-2008-049-APB Prepared By: Lawrence Berkeley National Laboratory Joe Eto, Manu Parashar, Bernard Lesieutre, and Nancy Jo Lewis Berkeley, CA Administered by University of California, California Institute for Energy and Environment under 500-99-013, BOA-138. Jim Cole, Larry Miller Oakland, California 94612 Commission Contract No. 500-02-004 Commission Work Authorization No: MR-036 Prepared For: Public Interest Energy Research (PIER) California Energy Commission

448

State-of-the-art of near-real-time materials accounting  

SciTech Connect

Near-real-time accounting is being pursued as a method for improving the timeliness and diversion detection sensitivity of conventional accounting procedures. Acceptability of near-real-time accounting for international safeguards depends on: Development of measurement techniques that provide the required sensitivity and timeliness, proper consideration of measurement control programs, development of statistical techniques to evaluate measurement data, demonstration that the materials accounting results can be verified independently by the Agency, and demonstration of the safeguards system under operational plant conditions. Each of these areas is discussed in the paper.

Shipley, J.P.; Hakkila, E.A.

1982-01-01T23:59:59.000Z

449

Filter loading corrections for real-time aethalometer measurements of fresh  

NLE Websites -- All DOE Office Websites (Extended Search)

Filter loading corrections for real-time aethalometer measurements of fresh Filter loading corrections for real-time aethalometer measurements of fresh diesel soot. (2007) Title Filter loading corrections for real-time aethalometer measurements of fresh diesel soot. (2007) Publication Type Journal Article Year of Publication 2007 Authors Jimenez, Jorge, Candis S. Claiborn, Timothy Larson, Thomas W. Kirchstetter, and Lara A. Gundel Journal Journal of Air and Waste Management Association Volume 57 Issue 7 Pagination 868-873 Abstract In this study, a correction was developed for the aethalometer to measure real-time black carbon (BC) concentrations in an environment dominated by fresh diesel soot. The relationship between the actual mass-specific absorption coefficient for BC and the BC-dependent attenuation coefficients was determined from experiments conducted in a diesel exposure chamber that provided constant concentrations of fine particulate matter (PM; PM(2.5); PM < 2.5 microm in aerodynamic diameter) from diesel exhaust. The aethalometer reported BC concentrations decreasing with time from 48.1 to 31.5 microg m(-3) when exposed to constant PM(2.5) concentrations of 55 +/- 1 microg m(-3) and b(scat) = 95 +/- 3 Mm(-1) from diesel exhaust. This apparent decrease in reported light-absorbing PM concentration was used to derive a correction K(ATN) for loading of strong light-absorbing particles onto or into the aethalometer filter tape, which was a function of attenuation of light at 880 nm by the embedded particles

450

Real Time Pricing as a Default or Optional Service for C&I Customers: A Comparative Analysis of Eight Case Studies  

E-Print Network (OSTI)

Response Program, ISO-NE Real-Time Price Response Program,rather than real time market prices) is more compatible withare correlated to real-time market prices, customers may be

Barbose, Galen; Goldman, Charles; Bharvirkar, Ranjit; Hopper, Nicole; Ting, Michael; Neenan, Bernie

2005-01-01T23:59:59.000Z

451

TOGA-TAO: A Moored Array for Real-time Measurements in the Tropical Pacific Ocean  

Science Conference Proceedings (OSTI)

The importance of the El Niño-Southern Oscillation phenomenon in year-to-year fluctuations of the global climate has led to efforts to improve the real-time ocean observing system in the tropical Pacific. One element of this improved system is ...

S. P. Hayes; L. J. Mangum; J. Picaut; A. Sumi; K. Takeuchi

1991-03-01T23:59:59.000Z

452

Monitoring of Power System Topology in Real-Time Mladen Kezunovic  

E-Print Network (OSTI)

components such as generators, power transformers, transmission lines, loads, etc. The knowledge about components such as generators, power transformers, busbars, transmission lines and loads. The interconnectedMonitoring of Power System Topology in Real-Time Mladen Kezunovic Texas A&M University Email

453

Field Test to Demonstrate Real-Time In-Situ Detection of Volatile Organic Compounds  

E-Print Network (OSTI)

1 Field Test to Demonstrate Real-Time In-Situ Detection of Volatile Organic Compounds Hazmat Spill Center, Nevada Test Site September 19-25, 2001 Clifford K. Ho Sandia National Laboratories Albuquerque-filled 55- gallon drum at the Hazmat Spill Center at the Nevada Test Site. Background and Objectives Tens

Ho, Cliff

454

Real-Time Human Posture Reconstruction in Wireless Smart Camera Networks  

Science Conference Proceedings (OSTI)

While providing a variety of intriguing application opportunities, a vision sensor network poses three key challenges. High computation capacity is required for early vision functions to enable real-time performance. Wireless links limit image transmission ... Keywords: smart cameras, embedded vision systems, human posture estimation

Chen Wu; Hamid Aghajan; Richard Kleihorst

2008-04-01T23:59:59.000Z

455

Miniaturized CMOS Imaging Module with Real-time DSP Technology for Endoscope and Laryngoscope Applications  

Science Conference Proceedings (OSTI)

Miniaturized video camera is a key component in modern medical devices such as endoscopes or other minimally invasive instruments. Here we present a new imaging module which is so small that it can fit through the instrument channels of conventional ... Keywords: Blackfin DSP, CMOS imaging module, Miniature, Minimally invasive instruments, Real-time video processing

Liqiang Wang; Yan Shi; Zukang Lu; Huilong Duan

2009-01-01T23:59:59.000Z

456

Multimodal analysis of body sensor network data streams for real-time healthcare  

Science Conference Proceedings (OSTI)

Fundamental advances in low power circuits, wireless communication, physiological sensor design, and multimedia stream processing, have led to the deployment of body sensor networks for the real-time monitoring of individual health in diverse settings. ... Keywords: body sensor networks, multi-modal analysis, sensor networks, systems and communications

Manoj K. Garg; Duk-Jin Kim; Deepak S. Turaga; Balakrishnan Prabhakaran

2010-03-01T23:59:59.000Z

457

A Real-Time, Hierarchical, Sensor-Based Robotic System Architecture  

Science Conference Proceedings (OSTI)

A robotic system architecture is presented and its real-time performance, when used to control a robotic gripper system for deformation-free handling of limp material, is evaluated. A major problem to be overcome has been the integrability and compatibility ... Keywords: compatibility, hierarchical control, sensor-based control, system architecture, system integration

Timothy Hebert; Kimon Valavanis; Ramesh Kolluru

1998-01-01T23:59:59.000Z

458

Stochastic search versus genetic algorithms for solving real time and over-constrained temporal constraint problems  

Science Conference Proceedings (OSTI)

The aim of this work is to study the applicability of Genetic Algorithms (GAs) and stochastic local search methods to solve real time and over constrained temporal constraint problems. Solving these two type of problems consists of finding a possible ... Keywords: constraint satisfaction, genetic algorithms, local search, temporal reasoning

Malek Mouhoub

2005-01-01T23:59:59.000Z

459

Use of GIS as a Real Time Decision Support System for Irrigation Districts  

E-Print Network (OSTI)

The objectives were to provide the districts with a simple tool that would improve the availability of pumps and gates data from the existing SCADA system, improve the management of water orders, and allow access of data by account holders through the internet. An important component of the project was to interact and train District personnel. The final product of the project is a website, where pump and gates operations and water orders information are displayed in real-time, along with links to related historical data and other information. The on-line tool has three main components: 1) possibility to query real time and historic data from a new reorganized database created in our server; 2) status maps for display in real time of selected spatial information and alarms; 3) interactive maps for display of desired spatial information in real time and query historic spatial information. The main meaning of the status maps is to enable a friendlier and quicker access to the frequently used data. SCADA data include On/Off, current flow, upstream and downstream water level, and gate position. Water account data include pending orders, payment delinquents, and water balances.

Bonaiti, G.; Fipps, G.

2012-12-01T23:59:59.000Z

460

Runtime architecture adaptation for energy management in embedded real-time systems  

Science Conference Proceedings (OSTI)

Energy consumption has long been recognized as an important performance metric for many real-time and embedded systems. The traditional approach to energy-aware computing is to dynamically scale the voltage: this results in a significant drop in the ...

H. Wang; I. Koren; C. M. Krishna

2012-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "real time grid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Adaptive energy-efficient scheduling for real-time tasks on DVS-enabled heterogeneous clusters  

Science Conference Proceedings (OSTI)

Developing energy-efficient clusters not only can reduce power electricity cost but also can improve system reliability. Existing scheduling strategies developed for energy-efficient clusters conserve energy at the cost of performance. The performance ... Keywords: Adaptivity, Cluster, Dynamic voltage scaling, Energy-efficient, Real-time, Scheduling

Xiaomin Zhu; Chuan He; Kenli Li; Xiao Qin

2012-06-01T23:59:59.000Z

462

Real-time automatic interpolation of ambient gamma dose rates from the Dutch radioactivity monitoring network  

Science Conference Proceedings (OSTI)

Detection of radiological accidents and monitoring the spread of the contamination is of great importance. Following the Chernobyl accident many European countries have installed monitoring networks to perform this task. Real-time availability of automatically ... Keywords: Automatic interpolation, Interoperability, Kriging, Monitoring networks, Web services

Paul H. Hiemstra; Edzer J. Pebesma; Chris J. W. Twenhöfel; Gerard B. M. Heuvelink

2009-08-01T23:59:59.000Z

463

Accurate Modeling and Prediction of Energy Availability in Energy Harvesting Real-Time Embedded Systems  

E-Print Network (OSTI)

on the type of energy harvesting technology, ECM1 can be either DC/DC or AC/DC converter. ECM2 is usually a DC/DCAccurate Modeling and Prediction of Energy Availability in Energy Harvesting Real-Time Embedded}@binghamton.edu Abstract -- Energy availability is the primary subject that drives the research innovations in energy

Qiu, Qinru

464

Fuzzy coordinated PI controller: application to the real-time pressure control process  

Science Conference Proceedings (OSTI)

This paper presents the real-time implementation of a fuzzy coordinated classical PI control scheme for controlling the pressure in a pilot pressure tank system. The fuzzy system has been designed to track the variation parameters in a feedback loop ...

N. Kanagaraj; P. Sivashanmugam; S. Paramasivam

2008-01-01T23:59:59.000Z

465

A virtual sensor system for user-generated, real-time environmental data products  

Science Conference Proceedings (OSTI)

With the advent of new instrumentation and sensors, more diverse types and increasing amounts of data are becoming available to environmental researchers and practitioners. However, accessing and integrating these data into forms usable for environmental ... Keywords: Collaborative technology, Cyberinfrastructure, Data integration, Environmental sensors, NEXRAD, Real-time sensing, Virtual sensor, Workflow

David J. Hill; Yong Liu; Luigi Marini; Rob Kooper; Alejandro Rodriguez; Joe Futrelle; Barbara S. Minsker; James Myers; Terry McLaren

2011-12-01T23:59:59.000Z

466

COAMPS Real-Time Dust Storm Forecasting during Operation Iraqi Freedom  

Science Conference Proceedings (OSTI)

Dust storms are a significant weather phenomenon in the Iraq region in winter and spring. Real-time dust forecasting using the U.S. Navy’s Coupled Ocean–Atmospheric Mesoscale Prediction System (COAMPS) with an in-line dust aerosol model was ...

Ming Liu; Douglas L. Westphal; Annette L. Walker; Teddy R. Holt; Kim A. Richardson; Steven D. Miller

2007-02-01T23:59:59.000Z

467

Real-time trip information service for a large taxi fleet  

Science Conference Proceedings (OSTI)

In this paper, we describe the design, analysis, implementation, and operational deployment of a real-time trip information system that provides passengers with the expected fare and trip duration of the taxi ride they are planning to take. This system ... Keywords: history-based predictions, nearest neighbour queries, partition-based predictions, taxi fleets, trip information service

Rajesh Krishna Balan; Khoa Xuan Nguyen; Lingxiao Jiang

2011-06-01T23:59:59.000Z

468

A real-time scheduling framework for embedded systems with environmental energy harvesting  

Science Conference Proceedings (OSTI)

Real-time scheduling refers to the problem in which there is a deadline associated with the execution of a task. In this paper, we address the scheduling problem for a uniprocessor platform that is powered by a renewable energy storage unit and uses ...

Hussein EL Ghor; Maryline Chetto; Rafic Hage Chehade

2011-07-01T23:59:59.000Z

469

Computational Modeling and Real-Time Control of Patient-Specific Laser Treatment of Cancer  

E-Print Network (OSTI)

Abstract—An adaptive feedback control system is presented which employs a computational model of bioheat transfer in living tissue to guide, in real-time, laser treatments of prostate cancer monitored by magnetic resonance thermal imaging. The system is built on what can be referred to as cyberinfrastructure—a complex structure of high-speed network, large-scale parallel computing devices, laser optics, imaging, visualizations, inverse-analysis algorithms, mesh generation, and control systems that guide laser therapy to optimally control the ablation of cancerous tissue. The computational system has been successfully tested on in vivo, canine prostate. Over the course of an 18 min laser-induced thermal therapy performed at M.D. Anderson Cancer Center (MDACC) in Houston, Texas, the computational models were calibrated to intra-operative real-time thermal imaging treatment data and the calibrated models controlled the bioheat transfer to within 5 °C of the predetermined treatment plan. The computational arena is in Austin, Texas and managed at the Institute for Computational Engineering and Sciences (ICES). The system is designed to control the bioheat transfer remotely while simultaneously providing real-time remote visualization of the on-going treatment. Post-operative histology of the canine prostate reveal that the damage region was within the targeted 1.2 cm diameter treatment objective. Keywords—Hyperthermia, Real-time computing, Medical imaging, Cancer treatment, Cyberinfrastructure, PDE

unknown authors

2009-01-01T23:59:59.000Z

470

Real-Time Dynamic Visual Tracking Using PSD Sensors and Extended Trapezoidal Motion Planning  

Science Conference Proceedings (OSTI)

A real-time visual servo tracking system for an industrial robot has been implemented using PSD (Position Sensitive Detector) cameras, neural networks, and an extended trapezoidal motion planning method. PSD and directly transduces the light‘s ... Keywords: extended trapezoidal motion planning, locally activated neural network, position sensitive detectors, target tracking, visual servoing

Soo-Hyuk Nam; Se-Young Oh

1999-01-01T23:59:59.000Z

471

Practical on-line dvs scheduling for fixed-priority real-time systems  

E-Print Network (OSTI)

We present an on-line Dynamic Voltage Scaling (DVS) algorithm for preemptive fixed-priority real-time systems called low power Limited Demand Analysis with Transition overhead (lpLDAT). It is the first algorithm in its class to explicitly account for transition overhead, and can reduce the energy consumption by as much as 40 % when compared to previous methods. 1.

Bren Mochocki; Xiaobo Sharon Hu

2005-01-01T23:59:59.000Z

472

Processing, Compression and Transmission of Satellite IR Data for Near-Real-Time Use at Sea  

Science Conference Proceedings (OSTI)

A method for acquisition, processing and analysis of digital, satellite-derived SST fields on a research vessel at sea in near-real-time (within 10 h of the satellite pass) is discussed. Such imagery provides a general view of the SST field over ...

Peter Cornillon; David Evans; Otis B. Brown; Robert Evans; Paul Eden; James Brown

1988-04-01T23:59:59.000Z

473

RINSE: The Real-Time Immersive Network Simulation Environment for Network Security Exercises (Extended Version)  

Science Conference Proceedings (OSTI)

The Real-Time Immersive Network Simulation Environment (RINSE) simulator is being developed to support large-scale network security preparedness and training exercises, involving hundreds of players and a modeled network composed of hundreds of local-area ... Keywords: Simulation, emulation, networking, security

Michael Liljenstam; Jason Liu; David M. Nicol; Yougu Yuan; Guanhua Yan; Chris Grier

2006-01-01T23:59:59.000Z

474

RTiVISS: real-time video interactive systems for sustainability  

Science Conference Proceedings (OSTI)

RTiVISS is an exploratory project that proposes to investigate innovative concepts and design methods regarding environmental and sustainability issues. It is concerned with natural resources, specially forests, and their preservation, through critical ... Keywords: environmental art, experimental design, interactive installations, real-time video, social responsibility, sustainability

Mónica Mendes; Nuno Correia

2010-10-01T23:59:59.000Z

475

Shedding light on shadow: real-time interactive artworks based on cast shadows or silhouettes  

Science Conference Proceedings (OSTI)

Digital shadowing is a source of interest in immersive and interactive artworks because it enhances the feeling of presence, and because it is a very intuitive and engaging interaction "device." After a presentation of some major pieces in shadow-based ... Keywords: augmented reality, digital art, digital shadow, interactive art, real-time image processing, video-scenography

Christian Jacquemin; Georges Gagneré; Benoît Lahoz

2011-11-01T23:59:59.000Z

476

Real–Time Wind Synthesis from Doppler Radar Observations during the Mesoscale Alpine Programme  

Science Conference Proceedings (OSTI)

A real–time and automated multiple–Doppler analysis method for ground–based radar data, with an emphasis on observations conducted over complex terrain, is presented. It is the result of a joint effort of the radar groups of Centre National de ...

M. Chong; J-F. Georgis; O. Bousquet; S. R. Brodzik; C. Burghart; S. Cosma; U. Germann; V. Gouget; R. A. Houze Jr.; C. N. James; S. Prieur; R. Rotunno; F. Roux; J. Vivekanandan; Z-X. Zeng

2000-12-01T23:59:59.000Z

477

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

Science Conference Proceedings (OSTI)

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.

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

478

VizWiz: nearly real-time answers to visual questions  

Science Conference Proceedings (OSTI)

The lack of access to visual information like text labels, icons, and colors can cause frustration and decrease independence for blind people. Current access technology uses automatic approaches to address some problems in this space, but the technology ... Keywords: blind users, non-visual interfaces, real-time human computation

Jeffrey P. Bigham; Chandrika Jayant; Hanjie Ji; Greg Little; Andrew Miller; Robert C. Miller; Robin Miller; Aubrey Tatarowicz; Brandyn White; Samual White; Tom Yeh

2010-10-01T23:59:59.000Z

479

Boosting software fault injection for dependability analysis of real-time embedded applications  

Science Conference Proceedings (OSTI)

The design of complex embedded systems deployed in safety-critical or mission-critical applications mandates the availability of methods to validate the system dependability across the whole design flow. In this article we introduce a fault injection ... Keywords: Embedded systems, fault injection, real-time applications

Gianpiero Cabodi; Marco Murciano; Massimo Violante

2010-12-01T23:59:59.000Z

480

An enhanced dynamic voltage scaling scheme for energy-efficient embedded real-time control systems  

Science Conference Proceedings (OSTI)

Real-Time Dynamic Voltage Scaling (RT-DVS) has been one of the most important techniques for energy savings in battery-powered embedded systems. However, pure RT-DVS approaches rarely take into account the actual performance requirements of the target ...

Feng Xia; Youxian Sun

2006-05-01T23:59:59.000Z

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481

Real Time Physically-Based Modeling and Simulation of Cratering and Fragmentation of Terrain  

Science Conference Proceedings (OSTI)

Cratering and fragmentation of terrain due to eXplosions are the behaviors of interest in this effort. We propose a physically-based approach to model the eXplosion event and the process of terrain fragmentation resulting in the formation of craters. ... Keywords: dynamic terrain, eXplosion simulation, physics-based modeling, real time system, simulation, terrain database

Nabil Rami; Michael D. Proctor

2007-12-01T23:59:59.000Z

482

A mobility-adaptive TDMA MAC for real-time data in wireless networks  

Science Conference Proceedings (OSTI)

In this paper, we present a TDMA MAC protocol for scenarios with real-time traffic like voice streams. While many previous works assume stationary networks, DynaMAC can quickly adapt to changing topologies while not violating delay guarantees for even ...

Johannes Lessmann; Dirk Held

2008-05-01T23:59:59.000Z

483

Model driven middleware: A new paradigm for developing distributed real-time and embedded systems  

Science Conference Proceedings (OSTI)

Distributed real-time and embedded (DRE) systems have become critical in domains such as avionics (e.g., flight mission computers), telecommunications (e.g., wireless phone services), tele-medicine (e.g., robotic surgery), and defense applications (e.g., ... Keywords: CCM: CORBA component model, D&C: Deployment and configuration, MDM: Model driven middleware

Aniruddha Gokhale; Krishnakumar Balasubramanian; Arvind S. Krishna; Jaiganesh Balasubramanian; George Edwards; Gan Deng; Emre Turkay; Jeffrey Parsons; Douglas C. Schmidt

2008-09-01T23:59:59.000Z

484

An Integrated Approach to Error Correction for Real-Time Radar-Rainfall Estimation  

Science Conference Proceedings (OSTI)

A procedure for estimating radar rainfall in real time consists of three main steps: 1) the measurement of reflectivity and removal of known sources of errors, 2) the conversion of the reflectivity to a rainfall rate (Z–R conversion), and 3) the ...

Siriluk Chumchean; Ashish Sharma; Alan Seed

2006-01-01T23:59:59.000Z

485

Towards a Mobile Code Management Environment for Complex,Real-Time, Distributed Systems  

Science Conference Proceedings (OSTI)

We present a novel mobile code management environment, currently under design and development. Our design employs an open architecture, suitable for ``plug-and-play'' with COTS and other groups' tools. While we have studied new algorithms, cost and ... Keywords: Java, compilation and interpretation, distributed systems, efficiency and safety tradeoffs, mobile agents, mobile code, real-time systems

Alexander D. Stoyen; Plamen V. Petrov

2001-07-01T23:59:59.000Z

486

Real Time Simulation and Online Control for Virtual Test Drives of Cars  

E-Print Network (OSTI)

Virtual prototyping plays a key role in modern car engineering. For virtual test drives of entire cars in the computer, mathematical and computational models of the vehicle, the road, and the driver are presented. The numerical simulation must be performed in real time for application in Hardware-in-the-Loop experiments. Numerical results are presented for the ISO slalom test.

Cornelius Chucholowski; Martin Vögel; Oskar von Stryk; Thiess-Magnus Wolter

1999-01-01T23:59:59.000Z

487

Real-time ocean surge warning system, meadowlands district of New Jersey  

Science Conference Proceedings (OSTI)

Low-lying coastal, residential and industrial areas are of great concern to emergency managers because of their susceptibility to tidal flooding and sea level surge. Fairly accurate warnings of sea surges do exist, as does information about property ... Keywords: emergency management, emergency management system, flood, information dissemination, real-time ocean surge warnings, sensor network, sensor system, tide gates

Francisco Artigas; Soon Ae Chun; Yogi Sookhu

2009-05-01T23:59:59.000Z

488

Thermal Energy Storage Systems Operation and Control Strategies Under Real Time Pricing  

Science Conference Proceedings (OSTI)

This report describes a methodology that was developed for evaluation of operation and control strategies for thermal energy storage (TES) systems under emerging real-time price (RTP) rate structures. The methodology was demonstrated on a prototype office building in two southeastern United States climates.

2004-06-14T23:59:59.000Z

489

Energy-conserving feedback EDF scheduling for embedded systems with real-time constraints  

Science Conference Proceedings (OSTI)

Embedded systems have limited energy resources. Hence, they should conserve these resources to extend their period of operation. Recently, dynamic frequency scaling (DFS) and dynamic voltage scaling (DVS) have been added to a various embedded processors ... Keywords: dynamic voltage scaling, real-time systems, scheduling

Ajay Dudani; Frank Mueller; Yifan Zhu

2002-07-01T23:59:59.000Z

490

QoS and energy aware routing for real-time traffic in wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks are being built to facilitate automated information gathering in military, industrial, environmental and surveillance applications. Many such applications of Sensor Networks require improved QoS (packet delivery within a defined ... Keywords: QoS routing, Real-Time communication, Sensor networks

Abinash Mahapatra; Kumar Anand; Dharma P. Agrawal

2006-02-01T23:59:59.000Z

491

Real-Time Short-Term Forecasting of Precipitation at an Australian Tropical Station  

Science Conference Proceedings (OSTI)

The results of a major real-time trial of techniques for the short-term (12 h ahead) prediction of precipitation for the Australian tropical city of Darwin are described. The trial compared current operational manual forecasting procedures with a ...

K. Fraedrich; L. M. Leslie

1988-06-01T23:59:59.000Z

492

Can Real-Time Machine Translation Overcome Language Barriers in Distributed Requirements Engineering?  

E-Print Network (OSTI)

distant cultures with different languages and communication styles that, in turn, exacerbate communication software development requires close cooperation of individuals with distant cultural backgrounds. Cultural to explore the performance of MT in real-time text chat. The findings from our simulation are presented

Lanubile, Filippo

493

Real-Time Quality Control of Wave Observations in the North Sea  

Science Conference Proceedings (OSTI)

The use of ocean wave data in new data assimilation techniques prompted the development of a real-time quality control system for wave height and wave period observations. Over the North Sea, a relatively large number of wave observations, as ...

María Paula Etala; Gerrit Burgers

1994-12-01T23:59:59.000Z

494

Voices of victory: a computational focus group framework for tracking opinion shift in real time  

Science Conference Proceedings (OSTI)

Social media have been employed to assess public opinions on events, markets, and policies. Most current work focuses on either developing aggregated measures or opinion extraction methods like sentiment analysis. These approaches suffer from unpredictable ... Keywords: computational social science, data-driven journalism, process inference, public opinion, real time system, social meter

Yu-Ru Lin, Drew Margolin, Brian Keegan, David Lazer

2013-05-01T23:59:59.000Z

495

Real-time location and inpatient care systems based on passive RFID  

Science Conference Proceedings (OSTI)

RFID technology meets identification and tracking requirements in healthcare environments with potential to speed up and increase reliability of involved processes. Due to this, high expectations for this integration have emerged, but hospital and medical ... Keywords: EPC Gen1&2 performance, Hospital information system, Inpatient management, Medical asset management, Real-time location system

Pablo Najera; Javier Lopez; Rodrigo Roman

2011-05-01T23:59:59.000Z

496

The managed motorway: real-time vehicle scheduling: a research agenda  

Science Conference Proceedings (OSTI)

Air pollution, traffic congestion, stress and accidents are common features of today's road transportation experience. New approaches to improving the efficiency and safety of transportation systems are therefore required. Existing work on safe high-speed ... Keywords: adaptive scheduling, managed motorway, real-time

Vinny Cahill; Aline Senart; Douglas C. Schmidt; Stefan Weber; Anthony Harrington; Barbara Hughes

2008-02-01T23:59:59.000Z

497

Condensate system modelling in real time for a training power plant simulator  

Science Conference Proceedings (OSTI)

In this paper, the basis of the models of the condensate water and the air cooled condenser are presented. The models are part of a full scope simulator of a 450 MW combined cycle power plant. The simulator is executed in real time and is intended to ...

Yadira Mendoza-Alegría; Edgardo J. Roldan-Villasana

2011-10-01T23:59:59.000Z

498

Current status of DIII-D real-time digital plasma control  

Science Conference Proceedings (OSTI)

This paper describes the current status of real-time digital plasma control for the DIII-D tokamak. The digital plasma control system (PCS) has been in place at DIII-D since the early 1990s and continues to expand and improve in its capabilities to monitor and control plasma parameters for DIII-D fusion science experiments. The PCs monitors over 200 tokamak parameters from the DIII-D experiment using a real-time data acquisition system that acquires a new set of samples once every 60 {micro}s. This information is then used in a number of feedback control algorithms to compute and control a variety of parameters including those affecting plasma shape and position. A number of system related improvements has improved the usability and flexibility of the DIII-D PCS. These include more graphical user interfaces to assist in entering and viewing the large and ever growing number of parameters controlled by the PCS, increased interaction and accessibility from other DIII-D applications, and upgrades to the computer hardware and vended software. Future plans for the system include possible upgrades of the real-time computers, further links to other DIII-D diagnostic measurements such as real-time Thomson scattering analysis, and joint collaborations with other tokamak experiments including the NSTX at Princeton.

Penaflor, B.G.; Piglowski, D.A.; Ferron, J.R.; Walker, M.L.

1999-06-01T23:59:59.000Z

499

Integrated system for control and monitoring in real time of efficient electrical and thermal energy production  

Science Conference Proceedings (OSTI)

The integrated monitoring and driving system is made of main distributed components: - first level:_one or two computers placed in the control room which monitors the thermal and electrical processes based on the datas provided by the second level via ... Keywords: cogenerative gas power plant, control of distributed parameter systems, distribution management system, electric power systems, optimization, process control, real time systems, simulation

Ion Miciu; Florin Hartescu

2008-08-01T23:59:59.000Z

500

A High Integrity Profile for Memory Safe Programming in Real-time Java  

E-Print Network (OSTI)

the structure of Real-time Java programs. By giving an additional mean- ing to the package construct, we, de be allocated within any package ­ but will be prevented from abstract class ScopeGate { protected Scope, we moved classes amongst packages so that Scoped Zen's package structure matched the scope structure

Zhao, Tian