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1

Closed Lab Announcements | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Closed Funding Opportunity Announcements (FOAs) Closed Lab Announcements Award Search 2013 Exascale Operating and Runtime Systems RX-Solvers FAQ Advanced Scientific...

2

Characterizing Application Runtime Behavior from System Logs and Metrics  

Science Conference Proceedings (OSTI)

Large-scale systems are heavily shared resource environments where a mix of applications are launched concurrently competing for network and storage resources. It is essential to characterize the runtime behavior of these applications for provisioning system resources and understanding the impact of application s performance when competing for resources. In this paper, we study the use of zero- and low-overhead system logs and other system metric data for characterizing the runtime behavior of several applications. We present our preliminary work on estimating individual application s I/O demands by observing file system usage pattern over multiple runs, and interpreting application s network utilization characteristics by observing link-layer error logs. We also present preliminary findings on using such information in making context-sensitive scheduling decisions that minimize potentially negative interactions between applications competing for shared resources. Our analysis is based on four months of system log data collected on one of the world s largest supercomputing facilities, the Jaguar XT5 petaflop system at Oak Ridge National Laboratory.

Gunasekaran, Raghul [ORNL; Dillow, David A [ORNL; Shipman, Galen M [ORNL; Vuduc, Richard [Georgia Institute of Technology; Chow, Edmond [Georgia Institute of Technology

2011-01-01T23:59:59.000Z

3

Initial steps towards run-time support for norm-governed systems  

Science Conference Proceedings (OSTI)

We present a knowledge representation framework with an associated run-time support infrastructure that is able to compute, for the benefit of the members of a norm-governed multi-agent system, the physically possible and permitted actions at each time, ... Keywords: GOLEM, event calculus, run-time service, social interaction

Visara Urovi; Stefano Bromuri; Kostas Stathis; Alexander Artikis

2010-05-01T23:59:59.000Z

4

Using memory mapping to support cactus stacks in work-stealing runtime systems  

E-Print Network (OSTI)

Many multithreaded concurrency platforms that use a work-stealing runtime system incorporate a "cactus stack," wherein a function's accesses to stack variables properly respect the function's calling ancestry, even when ...

Lee, I-Ting Angelina

5

Run-time validation of knowledge-based systems  

Science Conference Proceedings (OSTI)

As knowledge bases become more complex it is increasingly unlikely that they will have been validated against all possible data and therefore an increasing risk of making errors. Run-time validation is checking whether the output of a knowledge base ... Keywords: anomalies, outliers, prudence, ripple-down rules, validation

Angela Finlayson, Paul Compton

2013-06-01T23:59:59.000Z

6

Runtime Tracing of The Community Earth System Model: Feasibility and Benefits  

Science Conference Proceedings (OSTI)

Community Earth System Models (CESM) is one of US's leading earth system modeling systems, which has over decades of development history and embraced by large, active user communities. In this paper, we first review the history of CESM software development and layout the general objectives of performance analysis. Then we present an offline global community land model simulation within the CESM framework to demonstrate the procedure of runtime tracing of CESM using the Vampir toolset. Finally, we explain the benefits of runtime tracing to the general earth system modeling community. We hope those considerations can also be beneficial to many other modeling research programs involving legacy high-performance computing applications.

Wang, Dali [ORNL; Domke, Jens [ORNL

2011-01-01T23:59:59.000Z

7

MetaVM: A Transparent Distributed Object System Supported by Runtime Compiler  

E-Print Network (OSTI)

MetaVM is a distributed object system for Java virtual machine. It allows programmers to deal with remote objects in the same way they do local objects. Therefore, it can provide a single machine image to programmers. We implemented a runtime compiler of Java bytecode to provide the facilities. The runtime compiler generates a native code which can handle remote objects beyond the network besides the local objects. The compiler uses semantic expansion, which is a technique that changes the original semantics of a Java bytecode. Keywords: distributed object system, network transparency, Java Just-In-Time compiler 1

Kazuyuki Shudo Yoichi; Yoichi Muraoka

2000-01-01T23:59:59.000Z

8

Designing Energy Efficient Communication Runtime Systems for Data Centric Programming Models  

Science Conference Proceedings (OSTI)

The insatiable demand of high performance computing is being driven by the most computationally intensive applications such as computational chemistry, climate modeling, nuclear physics, etc. The last couple of decades have observed a tremendous rise ... Keywords: PGAS, Communication Runtime Systems, Energy Efficiency

Abhinav Vishnu; Shuaiwen Song; Andres Marquez; Kevin Barker; Darren Kerbyson; Kirk Cameron; Pavan Balaji

2010-12-01T23:59:59.000Z

9

Designing energy efficient communication runtime systems: a view from PGAS models  

Science Conference Proceedings (OSTI)

As the march to the exascale computing gains momentum, energy consumption of supercomputers has emerged to be the critical roadblock. While architectural innovations are imperative in achieving computing of this scale, it is largely dependent on the ... Keywords: Communication runtime system, DVFS, Energy efficiency, InfiniBand

Abhinav Vishnu; Shuaiwen Song; Andres Marquez; Kevin Barker; Darren Kerbyson; Kirk Cameron; Pavan Balaji

2013-03-01T23:59:59.000Z

10

Enhancing the performance of assisted execution runtime systems through hardware/software techniques  

Science Conference Proceedings (OSTI)

To meet the expected performance, future exascale systems will require programmers to increase the level of parallelism of their applications. Novel programming models simplify parallel programming at the cost of increasing runtime overheard. Assisted ... Keywords: assisted execution, exascale, performance, transactional memory

Gokcen Kestor; Roberto Gioiosa; Osman Sabri Unsal; Adrian Cristal; Mateo Valero

2012-06-01T23:59:59.000Z

11

Enabling run-time memory data transfer optimizations at the system level with automated extraction of embedded software metadata information  

Science Conference Proceedings (OSTI)

The information about the run-time behavior of software applications is crucial for enabling system level optimizations for embedded systems. This embedded Software Metadata information is especially important today, because several complex multi-threaded ...

Alexandros Bartzas; Miguel Peon-Quiros; Stylianos Mamagkakis; Francky Catthoor; Dimitrios Soudris; Jose M. Mendias

2008-01-01T23:59:59.000Z

12

Extreme Scale FAQ | U.S. DOE Office of Science (SC)  

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

RX-Solvers FAQ RX-Solvers FAQ Advanced Scientific Computing Research (ASCR) ASCR Home About Research Facilities Science Highlights Benefits of ASCR Funding Opportunities Closed Funding Opportunity Announcements (FOAs) Closed Lab Announcements Award Search 2013 Exascale Operating and Runtime Systems RX-Solvers FAQ Advanced Scientific Computing Advisory Committee (ASCAC) News & Resources Contact Information Advanced Scientific Computing Research U.S. Department of Energy SC-21/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-7486 F: (301) 903-4846 E: sc.ascr@science.doe.gov More Information » Funding Opportunities RX-Solvers FAQ Print Text Size: A A A RSS Feeds FeedbackShare Page Resilient Extreme-Scale Solvers ("RX-Solvers") Funding Opportunity Announcements (FOA) DE-FOA-0000742 and Program

13

Framework for Adaptable Operating and Runtime Systems: Final Project Report  

SciTech Connect

In this grant, we examined a wide range of techniques for constructing high-performance con#12;gurable system software for HPC systems and its application to DOE-relevant problems. Overall, research and development on this project focused in three specifc areas: (1) software frameworks for constructing and deploying con#12;gurable system software, (2) applcation of these frameworks to HPC-oriented adaptable networking software, (3) performance analysis of HPC system software to understand opportunities for performance optimization.

Patrick G. Bridges

2012-02-01T23:59:59.000Z

14

ParaGraph-RTS: A parallel reduction-based run-time system  

Science Conference Proceedings (OSTI)

We are investigating the use of the functional programming paradigm on multiprocessor computers. We have developed a parallel graph reduction run-time system called ParaGraph-RTS (Parallel Graph Reduction) that provides both significant amounts of exploitable parallelism and the robustness to support development of large scientific codes. This system allows us to empirically investigate the functional programming paradigm within computationally intensive application domains. In this paper, we describe an implementation of ParaGraph-RTS on a shared-memory multiprocessor. The implementation strategy reflects insights gained through performance characterizations of the reduction process. Preliminary performance results and analyses are presented. 8 refs., 4 figs.

Yantis, B.; Rich, D.; Michelsen, R.

1989-01-01T23:59:59.000Z

15

MetaVM: A transparent distributed object system supported by runtime compiler  

E-Print Network (OSTI)

Abstract MetaVM is a distributed object system for Java virtual machine. It allows programmers to deal with remote objects in the same way they do local objects. Therefore, it can provide a single machine image to programmers. We implemented a runtime compiler of Java bytecode to provide the facilities. The runtime compiler generates a native code which can handle remote objects beyond the network besides the local objects. The compiler uses semantic expansion, which is a technique that changes the original semantics of a Java bytecode. This paper presents the simple programming interface, the code generation method of MetaVM, and our experimental performance results. The results demonstrate efficiency of remote operations. Keywords: distributed object system, network transparency, Java Just-In-Time compiler 1 Introduction A distributed object system is an instrument to develop a network distributed system in object-oriented programming languages. One of important benefits of such systems is to release programmers from the burden of exchanging information via a network. Programmers can write a distributed system in an object-oriented manner without concern for communication protocols.

Kazuyuki Shudo; Yoichi Muraoka

2000-01-01T23:59:59.000Z

16

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

17

Runtime verification: the application perspective  

Science Conference Proceedings (OSTI)

In the past decade, Runtime Verification (RV) has gained much focus, from both the research community and practitioners. Roughly speaking, RV combines a set of theories, techniques and tools aiming towards efficient analysis of systems' executions and ...

Ylis Falcone; Lenore D. Zuck

2012-10-01T23:59:59.000Z

18

A uGNI-Based Asynchronous Message-driven Runtime System for Cray Supercomputers with Gemini Interconnect  

SciTech Connect

Gemini as the network for new Cray XE/XT systems features low latency, high bandwidth and strong scalability. Its hardware support for remote direct memory access enables efficient implementation of the global address space programming languages. Although the Generic Network Interface (GNI) is designed to support message-passing applications, it is still challenging to attain good performance for applications written in alternative programming models, such as the message-driven programming model. In our earlier work we showed that CHARM++, an object-oriented message-driven programming model, scales up to the full Jaguar Cray machine. In this paper, we describe a general and light-weight asynchronous Low-level RunTime System (LRTS) for CHARM+, and its implementation on the uGNI software stack for Cray XE systems. Several techniques are presented to exploit the uGNI capability by reducing memory copy and registration overhead, taking advantage of persistent communication, and improving intra-node communication. Our micro-benchmark results demonstrate that the uGNI-based runtime system outperforms the MPI-based implementation by up to 50% in terms of message latency. For communication intensive applications such as N-Queens, this implementation scales up to 15,360 cores of a Cray XE6 machine and is 70% faster than an MPI-based implementation. In molecular dynamics application NAMD, the performance is also considerably improved by as high as 18%.

Sun, Yanhua [University of Illinois, Urbana-Champaign; Zheng, Gengbin [University of Illinois, Urbana-Champaign; Olson, Ryan M [Cray, Inc.; Jones, Terry R [ORNL; Kale, Laxmikant V [University of Illinois, Urbana-Champaign

2012-01-01T23:59:59.000Z

19

Runtime verification of object lifetime specifications  

E-Print Network (OSTI)

This thesis reports on the implementation of a runtime verification system for object lifetime specifications. This system is used to explore and evaluate the expressiveness object lifetime specifications. Object lifetime ...

Benjamin, Zev (Zev A.)

2009-01-01T23:59:59.000Z

20

C++ Encapsulated Dynamic Runtime Power Control for Embedded Systems Orlando J. Hernandez, Godfrey Dande, and John Ofri  

E-Print Network (OSTI)

. A combination of software profiling, voltage-scaling and frequency throttling, along with run-time speed tables. As more electronic appliances are developed, the demand for electric energy has increased. This tends smart. In the approach described in this paper, software is profiled in a real-time environment

Hernandez, Orlando

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Runtime verification of service-oriented systems: a well-rounded survey  

Science Conference Proceedings (OSTI)

Dynamic nature of Service-Oriented Systems SOSs has made conventional verification techniques such as testing, model checking and theorem proving ineffective. As a result, many studies have been dedicated to verification of SOS. In this survey, we first ...

Reza Babaee; Seyed Morteza Babamir

2013-08-01T23:59:59.000Z

22

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

23

A System-Level Model for Runtime Power Estimation on Mobile Devices  

Science Conference Proceedings (OSTI)

The growing popularity of mobile internet services, characterized by heavy network transmission, intensive computation and an always-on display, poses a great challenge to the battery lifetime of mobile devices. To manage the power consumption in an ... Keywords: regression, power model, system-level, mobile device

Yu Xiao; Rijubrata Bhaumik; Zhirong Yang; Matti Siekkinen; Petri Savolainen; Antti Yla-Jaaski

2010-12-01T23:59:59.000Z

24

Radiation modeling using the Uintah heterogeneous CPU/GPU runtime system  

Science Conference Proceedings (OSTI)

The Uintah Computational Framework was developed to provide an environment for solving fluid-structure interaction problems on structured adaptive grids on large-scale, long-running, data-intensive problems. Uintah uses a combination of fluid-flow solvers ... Keywords: GPU, Keeneland, TitanDev, Uintah, adaptive, heterogeneous systems, hybrid parallelism, parallel, scalability

Alan Humphrey; Qingyu Meng; Martin Berzins; Todd Harman

2012-07-01T23:59:59.000Z

25

Investigating applications portability with the Uintah DAG-based runtime system on PetaScale supercomputers  

Science Conference Proceedings (OSTI)

Present trends in high performance computing present formidable challenges for applications code using multicore nodes possibly with accelerators and/or co-processors and reduced memory while still attaining scalability. Software frameworks that execute ... Keywords: Blue Gene/Q, GPU, Xeon Phi, adaptive, application, co-processor, heterogeneous systems, hybrid parallelism, parallel, scalability, software, uintah

Qingyu Meng, Alan Humphrey, John Schmidt, Martin Berzins

2013-11-01T23:59:59.000Z

26

Renewable Electric Plant Information System user interface manual: Paradox 7 Runtime for Windows  

DOE Green Energy (OSTI)

The Renewable Electric Plant Information System (REPiS) is a comprehensive database with detailed information on grid-connected renewable electric plants in the US. The current version, REPiS3 beta, was developed in Paradox for Windows. The user interface (UI) was developed to facilitate easy access to information in the database, without the need to have, or know how to use, Paradox for Windows. The UI is designed to provide quick responses to commonly requested sorts of the database. A quick perusal of this manual will familiarize one with the functions of the UI and will make use of the system easier. There are six parts to this manual: (1) Quick Start: Instructions for Users Familiar with Database Applications; (2) Getting Started: The Installation Process; (3) Choosing the Appropriate Report; (4) Using the User Interface; (5) Troubleshooting; (6) Appendices A and B.

NONE

1996-11-01T23:59:59.000Z

27

A Path to Operating System and Runtime Support for Extreme Scale Tools  

SciTech Connect

In this project, we cast distributed resource access as operations on files in a global name space and developed a common, scalable solution for group operations on distributed processes and files. The resulting solution enables tool and middleware developers to quickly create new scalable software or easily improve the scalability of existing software. The cornerstone of the project was the design of a new programming idiom called group file operations that eliminates iterative behavior when a single process must apply the same set of file operations to a group of related files. To demonstrate our novel and scalable ideas for group file operations and global name space composition, we developed a group file system called TBON-FS that leverages a tree-based overlay network (TBON), specifically MRNet, for logarithmic communication and distributed data aggregation. We also developed proc++, a new synthetic file system co-designed for use in scalable group file operations. Over the course of the project, we evaluated the utility and performance of group file operations, global name space composition, TBON-FS, and proc++ in three case studies. The first study focused on the ease in using group file operations and TBON-FS to quickly develop several new scalable tools for distributed system administration and monitoring. The second study evaluated the integration of group file operation and TBON-FS within the Ganglia Distributed Monitoring System to improve its scalability for clusters. The final study involved the integration of group file operations, TBON-FS, and proc++ within TotalView, the widely-used parallel debugger. For this project, the work of the Oak Ridge National Laboratory (ORNL) team occurred primarily in two directions: bringing the MRNet tree-based overlay network (TBON) implementation to the Cray XT platform, and investigating techniques for predicting the performance of MRNet topologies on such systems. Rogue Wave Software (RWS), formerly TotalView Technologies Inc., worked with the University ofWisconsin (UW) team on the design and prototyping of a scalable version of the TotalView debugger. RWS assisted UW with their "proc++" design effort. RWS assisted UW with strategy for integrating proc++ into TotalView.

Miller, Barton P.; Roth, Philip; DelSignore, John

2012-08-14T23:59:59.000Z

28

Pervasive parallelism for managed runtimes  

Science Conference Proceedings (OSTI)

Modern programming languages like C# or Java are executed in a managed runtime and offer support for concurrency at a high level of abstraction. However, high-level parallel abstractions (e.g., thread pools) can merely be provided as a library since ...

Albert Noll; Thomas R. Gross

2011-05-01T23:59:59.000Z

29

Runtime analysis tools for parallel scientific applications  

Science Conference Proceedings (OSTI)

This paper describes the Alpaca runtime tools. These tools leverage the component infrastructure of the Cactus Framework in a novel way to enable runtime steering, monitoring, and interactive control of a simulation. Simulation data can be observed graphically, ... Keywords: frameworks, runtime visualization, software/program verification

Oleg Korobkin; Gabrielle Allen; Steven R. Brandt; Eloisa Bentivegna; Peter Diener; Jinghua Ge; Frank Lffler; Erik Schnetter; Jian Tao

2011-07-01T23:59:59.000Z

30

Automated compile-time and run-time techniques to increase usable memory in MMU-less embedded systems  

Science Conference Proceedings (OSTI)

Random access memory (RAM) is tightly-constrained in many embedded systems. This is especially true for the least expensive, lowest-power embedded systems, such as sensor network nodes and portable consumer electronics. The most widely-used sensor network ... Keywords: data compression, embedded system, wireless sensor network

Lan S. Bai; Lei Yang; Robert P. Dick

2006-10-01T23:59:59.000Z

31

Observation strategies for event detection with incidence on runtime verification: theory, algorithms, experimentation  

Science Conference Proceedings (OSTI)

Many applications (such as system and user monitoring, runtime verification, diagnosis, observation-based decision making, intention recognition) all require to detect the occurrence of an event in a system, which entails the ability to observe the system. ... Keywords: 68Q17, 68U99, 68W25, Complexity, Event detection, Logic programming, Runtime verification, Temporal logic

Marco Alberti; Pierangelo Dell'Acqua; Lus Moniz Pereira

2011-07-01T23:59:59.000Z

32

Unifying design and runtime software adaptation using aspect models  

Science Conference Proceedings (OSTI)

Software systems are seen more and more as evolutive systems. At the design phase, software is constantly in adaptation by the building process itself, and at runtime, it can be adapted in response to changing conditions in the executing environment ... Keywords: Aspect oriented modeling, Software product lines

Carlos Parra; Xavier Blanc; Anthony Cleve; Laurence Duchien

2011-12-01T23:59:59.000Z

33

The JCilk-1 runtime system  

E-Print Network (OSTI)

JCilk extends the Java language to provide call-return semantics for multithreading, much as Cilk does for C. Java's built-in thread model does not support the passing of exceptions or return values from one thread back ...

Danaher, John (John Stephen)

2005-01-01T23:59:59.000Z

34

Run-time optimization of adaptive irregular applications  

E-Print Network (OSTI)

Compared to traditional compile-time optimization, run-time optimization could o?er signi?cant performance improvements when parallelizing and optimizing adaptive irregular applications, because it performs program analysis and adaptive optimizations during program execution. Run-time techniques can succeed where static techniques fail because they exploit the characteristics of input data, programs' dynamic behaviors, and the underneath execution environment. When optimizing adaptive irregular applications for parallel execution, a common observation is that the effectiveness of the optimizing transformations depends on programs' input data and their dynamic phases. This dissertation presents a set of run-time optimization techniques that match the characteristics of programs' dynamic memory access patterns and the appropriate optimization (parallelization) transformations. First, we present a general adaptive algorithm selection framework to automatically and adaptively select at run-time the best performing, functionally equivalent algorithm for each of its execution instances. The selection process is based on off-line automatically generated prediction models and characteristics (collected and analyzed dynamically) of the algorithm's input data, In this dissertation, we specialize this framework for automatic selection of reduction algorithms. In this research, we have identi?ed a small set of machine independent high-level characterization parameters and then we deployed an off-line, systematic experiment process to generate prediction models. These models, in turn, match the parameters to the best optimization transformations for a given machine. The technique has been evaluated thoroughly in terms of applications, platforms, and programs' dynamic behaviors. Speci?cally, for the reduction algorithm selection, the selected performance is within 2% of optimal performance and on average is 60% better than "Replicated Buffer," the default parallel reduction algorithm speci?ed by OpenMP standard. To reduce the overhead of speculative run-time parallelization, we have developed an adaptive run-time parallelization technique that dynamically chooses effcient shadow structures to record a program's dynamic memory access patterns for parallelization. This technique complements the original speculative run-time parallelization technique, the LRPD test, in parallelizing loops with sparse memory accesses. The techniques presented in this dissertation have been implemented in an optimizing research compiler and can be viewed as effective building blocks for comprehensive run-time optimization systems, e.g., feedback-directed optimization systems and dynamic compilation systems.

Yu, Hao

2004-08-01T23:59:59.000Z

35

U-014: Oracle Java Runtime Environment (JRE) Multiple Flaws Let...  

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

4: Oracle Java Runtime Environment (JRE) Multiple Flaws Let Remote Users Execute Arbitrary Code and Deny Service U-014: Oracle Java Runtime Environment (JRE) Multiple Flaws Let...

36

Design and implementation of a scalable membership service for supercomputer resiliency-aware runtime  

Science Conference Proceedings (OSTI)

As HPC systems and applications get bigger and more complex, we are approaching an era in which resiliency and run-time elasticity concerns become paramount. We offer a building block for an alternative resiliency approach in which computations will ...

Yoav Tock, Benjamin Mandler, Jos Moreira, Terry Jones

2013-08-01T23:59:59.000Z

37

U-014: Oracle Java Runtime Environment (JRE) Multiple Flaws Let Remote  

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

14: Oracle Java Runtime Environment (JRE) Multiple Flaws Let 14: Oracle Java Runtime Environment (JRE) Multiple Flaws Let Remote Users Execute Arbitrary Code and Deny Service U-014: Oracle Java Runtime Environment (JRE) Multiple Flaws Let Remote Users Execute Arbitrary Code and Deny Service October 19, 2011 - 6:00pm Addthis PROBLEM: Oracle Java Runtime Environment (JRE) Multiple Flaws Let Remote Users Execute Arbitrary Code and Deny Service. PLATFORM: Oracle JDK and JRE 7; JDK and JRE 6 Update 27 and prior; JDK and JRE 5.0 Update 31 and prior; SDK and JRE 1.4.2_33 and prior ABSTRACT: A remote user can create a Java applet or Java Web Start application that, when loaded by the target user, will access or modify data or execute arbitrary code on the target user's system. reference LINKS: Oracle Critical Patch Updates and Security Alerts

38

U-014: Oracle Java Runtime Environment (JRE) Multiple Flaws Let Remote  

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

4: Oracle Java Runtime Environment (JRE) Multiple Flaws Let 4: Oracle Java Runtime Environment (JRE) Multiple Flaws Let Remote Users Execute Arbitrary Code and Deny Service U-014: Oracle Java Runtime Environment (JRE) Multiple Flaws Let Remote Users Execute Arbitrary Code and Deny Service October 19, 2011 - 6:00pm Addthis PROBLEM: Oracle Java Runtime Environment (JRE) Multiple Flaws Let Remote Users Execute Arbitrary Code and Deny Service. PLATFORM: Oracle JDK and JRE 7; JDK and JRE 6 Update 27 and prior; JDK and JRE 5.0 Update 31 and prior; SDK and JRE 1.4.2_33 and prior ABSTRACT: A remote user can create a Java applet or Java Web Start application that, when loaded by the target user, will access or modify data or execute arbitrary code on the target user's system. reference LINKS: Oracle Critical Patch Updates and Security Alerts

39

FY13 Computer Science FAQ | U.S. DOE Office of Science (SC)  

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

2013 Exascale Operating and Runtime Systems 2013 Exascale Operating and Runtime Systems Advanced Scientific Computing Research (ASCR) ASCR Home About Research Facilities Science Highlights Benefits of ASCR Funding Opportunities Closed Funding Opportunity Announcements (FOAs) Closed Lab Announcements Award Search 2013 Exascale Operating and Runtime Systems RX-Solvers FAQ Advanced Scientific Computing Advisory Committee (ASCAC) News & Resources Contact Information Advanced Scientific Computing Research U.S. Department of Energy SC-21/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-7486 F: (301) 903-4846 E: sc.ascr@science.doe.gov More Information » Funding Opportunities 2013 Exascale Operating and Runtime Systems Print Text Size: A A A RSS Feeds FeedbackShare Page http://science.doe.gov/grants/pdf/LAB_13-02.pdf

40

Runtime Identification of Microprocessor Energy Saving Opportunities  

E-Print Network (OSTI)

scaling (DVS). Also, future work in improving energy efficiency is motivated by a detailed analysis analysis of processor energy efficiency for the SPEC CPU 2000 benchmark suite. We motivate the developmentRuntime Identification of Microprocessor Energy Saving Opportunities W. L. Bircher, M. Valluri, J

John, Lizy Kurian

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Hybrid Run-time Power Management Technique for Realtime  

E-Print Network (OSTI)

This paper presents a new run-time power management technique for real-time embedded systems which consist of a voltage scalable processor and power controllable peripheral devices. We have observed that there exist significant trade-offs in terms of energy consumption between the Dynamic Power Management (DPM) scheme and the Dynamic Voltage Scaling (DVS) scheme over a wide range of system operating conditions. The proposed technique fully exploits workload-variation slack time by partitioning the task into several timeslots and shut down the unneeded peripheral device on timeslot-by-timeslot basis.

Minyoung Kim; Embedded System With

2001-01-01T23:59:59.000Z

42

Runtime verification for multicore SoC with high-quality trace data  

Science Conference Proceedings (OSTI)

Multicore System-on-Chip (SoC) implementations of embedded systems are becoming very popular. In these systems it is possible to spread out computations over many cores. On one hand this leads to better energy efficiency if clock frequencies and core ... Keywords: Multicore SoC, embedded system, runtime verification, synchronisation, test driven development, trace data

Rico Backasch; Christian Hochberger; Alexander Weiss; Martin Leucker; Richard Lasslop

2013-03-01T23:59:59.000Z

43

Prototyping a fault-tolerant multiprocessor SoC with run-time fault recovery  

Science Conference Proceedings (OSTI)

Modern integrated circuits (ICs) are becoming increasingly complex. The complexity makes it difficult to design, manufacture and integrate these high performance ICs. The advent of multiprocessor Systems-on-chips (SoCs) makes it even more challenging ... Keywords: fault-tolerance, multiprocessor system, network-on-chip, retargetable simulation, run-time verification, system-on-chip

Xinping Zhu; Wei Qin

2006-07-01T23:59:59.000Z

44

Accurate Electrical Battery Model Capable of Predicting Runtime and I-V Performance  

E-Print Network (OSTI)

AbstractLow power dissipation and maximum battery runtime are crucial in portable electronics. With accurate and efficient circuit and battery models in hand, circuit designers can predict and optimize battery runtime and circuit performance. In this paper, an accurate, intuitive, and comprehensive electrical battery model is proposed and implemented in a Cadence environment. This model accounts for all dynamic characteristics of the battery, from nonlinear open-circuit voltage, current-, temperature-, cycle number-, and storage time-dependent capacity to transient response. A simplified model neglecting the effects of self-discharge, cycle number, and temperature, which are nonconsequential in low-power Li-ion-supplied applications, is validated with experimental data on NiMH and polymer Li-ion batteries. Less than 0.4 % runtime error and 30-mV maximum error voltage show that the proposed model predicts both the battery runtime and IV performance accurately. The model can also be easily extended to other battery and power sourcing technologies. Index TermsBatteries, cadence simulation, electrical model, IV performance, nickel-metal hydride battery, polymer lithiumion battery, runtime prediction, test system. I.

Min Chen; Student Member; Gabriel A. Rincn-mora; Senior Member

2006-01-01T23:59:59.000Z

45

Runtime Assignment of Reconfigurable Hardware Components for Image Processing Pipelines  

E-Print Network (OSTI)

The combination of hardware acceleration and flexibility make FPGAs important to image processing applications. There is also a need for efficient, flexible hardware/software codesign environments that can balance the benefits and costs of using FPGAs. Image processing applications often consist of a pipeline of components where each component applies a different processing algorithm. Components can be implemented for FPGAs or software. Such systems enable an image analyst to work with either FPGA or software implementations of image processing algorithms for a given problem. The pipeline assignment problem chooses from alternative implementations of pipeline components to yield the fastest pipeline. Our codesign system solves the pipeline assignment problem to provide the most effective implementation automatically, so the image analyst can focus solely on choosing components which make up the pipeline. However, the pipeline assignment problem is NP complete. An efficient, dynamic solution to the pipeline assignment problem is a desirable enabler of codesign systems which use both FPGA and software implementations. This paper is concerned with solving pipeline assignment in this context. Consequently, we focus on optimal and heuristic methods for fast (fixed time limit) runtime pipeline assignment. Exhaustive search, integer linear programming and local search methods for pipeline assignment are investigated. We present experimental findings for pipelines of 20 or fewer components which show that in our environment, optimal runtime solutions are possible for smaller pipelines and nearly optimal heuristic solutions are possible for larger pipelines.

Heather Quinn; L. A. Smith King; Miriam Leeser; W. Meleis; Waleed Meleis

2003-01-01T23:59:59.000Z

46

Runtime Detection of Heapbased Overflows  

E-Print Network (OSTI)

protection Figure 5: HTTP client throughput. Package glibc glibc + heap prot. OSDB 6,015 6,070 (+ 0 of deploying our heap protection system uses packages that install a protected glibc image alongside with the privileges of the victim process. This paper presents a technique that protects the heap management

Kruegel, Christopher

47

FORODT: Fortran debug routine for the PDP-11 (RT-11). [For run-time debugging  

SciTech Connect

FORODT provides run-time debug features to PDP-11 Fortran programs running with the RT-11 operating system. Digital Equipment Corporation's ODT program has been extended to include Fortran breakpoints, decimal integer and floating point data input, and output options. 3 figures.

Tanner, D.N.

1977-01-01T23:59:59.000Z

48

Runtime deadlock analysis for system level design  

E-Print Network (OSTI)

trigger() or wait() event will trigger or resume after theprovided by events and wait() or next_trigger() methodsTHREAD). Events are primitive behavior triggers. A process

Cheung, Eric; Chen, Xi; Hsieh, Harry; Davare, Abhijit; Sangiovanni-Vincentelli, Alberto; Watanabe, Yosinori

2009-01-01T23:59:59.000Z

49

PARLO: PArallel Run-Time Layout Optimization for Scientific Data Explorations with Heterogeneous Access Pattern  

SciTech Connect

Download Citation Email Print Request Permissions Save to Project The size and scope of cutting-edge scientific simulations are growing much faster than the I/O and storage capabilities of their run-time environments. The growing gap is exacerbated by exploratory, data-intensive analytics, such as querying simulation data with multivariate, spatio-temporal constraints, which induces heterogeneous access patterns that stress the performance of the underlying storage system. Previous work addresses data layout and indexing techniques to improve query performance for a single access pattern, which is not sufficient for complex analytics jobs. We present PARLO a parallel run-time layout optimization framework, to achieve multi-level data layout optimization for scientific applications at run-time before data is written to storage. The layout schemes optimize for heterogeneous access patterns with user-specified priorities. PARLO is integrated with ADIOS, a high-performance parallel I/O middleware for large-scale HPC applications, to achieve user-transparent, light-weight layout optimization for scientific datasets. It offers simple XML-based configuration for users to achieve flexible layout optimization without the need to modify or recompile application codes. Experiments show that PARLO improves performance by 2 to 26 times for queries with heterogeneous access patterns compared to state-of-the-art scientific database management systems. Compared to traditional post-processing approaches, its underlying run-time layout optimization achieves a 56% savings in processing time and a reduction in storage overhead of up to 50%. PARLO also exhibits a low run-time resource requirement, while also limiting the performance impact on running applications to a reasonable level.

Gong, Zhenhuan [North Carolina State University, Raleigh; Boyuka, David [North Carolina State University, Raleigh; Zou, X [North Carolina State University, Raleigh; Liu, Gary [ORNL; Podhorszki, Norbert [ORNL; Klasky, Scott A [ORNL; Ma, Xiaosong [North Carolina State University, Raleigh; Samatova, Nagiza F [ORNL

2013-01-01T23:59:59.000Z

50

Scalable fault tolerant protocol for parallel runtime environments  

Science Conference Proceedings (OSTI)

The number of processors embedded on high performance computing platforms is growing daily to satisfy users desire for solving larger and more complex problems. Parallel runtime environments have to support and adapt to the underlying libraries and hardware ...

Thara Angskun; Graham E. Fagg; George Bosilca; Jelena PjeivacGrbovi?; Jack J. Dongarra

2006-09-01T23:59:59.000Z

51

New initiative on runtime compatibility for MPI implementations | Argonne  

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

initiative on runtime compatibility for MPI implementations initiative on runtime compatibility for MPI implementations December 3, 2013 Tweet EmailPrint Researchers at Argonne National Laboratory have established an initiative to tackle the problem of maintaining runtime compatibility between message passing interface (MPI) implementations on high-performance computer architectures. The project, called the MPICH ABI Compatibility Initiative, involves the producers of several notable MPICH-derived message-passing implementations. MPICH is a high-performance, portable implementation of the MPI-1, MPI-2, and MPI-3 community standards for the message-passing model of parallel computation. Developed by an Argonne team of computer scientists, MPICH has become the de facto standard for scientific research on parallel computers

52

A comparative critical analysis of modern task-parallel runtimes.  

Science Conference Proceedings (OSTI)

The rise in node-level parallelism has increased interest in task-based parallel runtimes for a wide array of application areas. Applications have a wide variety of task spawning patterns which frequently change during the course of application execution, based on the algorithm or solver kernel in use. Task scheduling and load balance regimes, however, are often highly optimized for specific patterns. This paper uses four basic task spawning patterns to quantify the impact of specific scheduling policy decisions on execution time. We compare the behavior of six publicly available tasking runtimes: Intel Cilk, Intel Threading Building Blocks (TBB), Intel OpenMP, GCC OpenMP, Qthreads, and High Performance ParalleX (HPX). With the exception of Qthreads, the runtimes prove to have schedulers that are highly sensitive to application structure. No runtime is able to provide the best performance in all cases, and those that do provide the best performance in some cases, unfortunately, provide extremely poor performance when application structure does not match the scheduler's assumptions.

Wheeler, Kyle Bruce; Stark, Dylan; Murphy, Richard C. [Micron Technology, Inc., Boise, ID

2012-12-01T23:59:59.000Z

53

Specification and Runtime Verification of Java Card Programs  

Science Conference Proceedings (OSTI)

Java Card is a version of Java developed to run on devices with severe storage and processing restrictions. The applets that run on these devices are frequently intended for use in critical, highly distributed, mobile conditions. They are required to ... Keywords: Compiler, JCML, JML, Java Card, Runtime Verification

Umberto Souza da Costa; Anamaria Martins Moreira; Martin A. Musicante; Plcido A. Souza Neto

2009-07-01T23:59:59.000Z

54

Go with the flow: profiling copies to find runtime bloat  

Science Conference Proceedings (OSTI)

Many large-scale Java applications suffer from runtime bloat. They execute large volumes of methods, and create many temporary objects, all to execute relatively simple operations. There are large opportunities for performance optimizations in these ... Keywords: copy graph, heap analysis, memory bloat, profiling

Guoqing Xu; Matthew Arnold; Nick Mitchell; Atanas Rountev; Gary Sevitsky

2009-06-01T23:59:59.000Z

55

Towards Reliable Smart Microgrid Behavior Using Runtime Model Synthesis  

Science Conference Proceedings (OSTI)

The dominant paradigm of centralized power generation, characterized by heavy transmission losses, is being slowly replaced by the smart micro grid, which promises the proliferation of renewable and distributed energy sources. Micro grid reliability ... Keywords: High Assurance, Model-Driven Development, Model Management, Microgrid, SmartGrid, Runtime Models

Mark Allison; Karl A. Morris; Zhenyu Yang; Peter J. Clarke; Fabio M. Costa

2012-10-01T23:59:59.000Z

56

EIA - State Energy Data System  

U.S. Energy Information Administration (EIA)

State Energy Data System (SEDS) 500 . Unhandled exception thrown from /emeu/states/hf.jsp:90 jrun.jsp.runtime ...

57

Prius: a runtime for hybrid computing  

Science Conference Proceedings (OSTI)

Prius is a framework for seamless execution of OpenCL programs across integrated, heterogeneous systems. Applications interfacing with Prius need not be aware of the characteristics of the hardware; instead the framework will automatically map kernel ...

Dominik Grewe

2013-02-01T23:59:59.000Z

58

V-172: ISC BIND RUNTIME_CHECK Error Lets Remote Users Deny Service Against Recursive Resolvers  

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

A defect exists which allows an attacker to crash a BIND 9 recursive resolver with a RUNTIME_CHECK error in resolver.c

59

MUST: A Scalable Approach to Runtime Error Detection in MPI Programs  

Science Conference Proceedings (OSTI)

The Message-Passing Interface (MPI) is large and complex. Therefore, programming MPI is error prone. Several MPI runtime correctness tools address classes of usage errors, such as deadlocks or nonportable constructs. To our knowledge none of these tools scales to more than about 100 processes. However, some of the current HPC systems use more than 100,000 cores and future systems are expected to use far more. Since errors often depend on the task count used, we need correctness tools that scale to the full system size. We present a novel framework for scalable MPI correctness tools to address this need. Our fine-grained, module-based approach supports rapid prototyping and allows correctness tools built upon it to adapt to different architectures and use cases. The design uses PnMPI to instantiate a tool from a set of individual modules. We present an overview of our design, along with first performance results for a proof of concept implementation.

Hilbrich, T; Schulz, M; de Supinski, B R; Muller, M

2010-03-24T23:59:59.000Z

60

Machine Learning Based Online Performance Prediction for Runtime Parallelization and Task Scheduling  

Science Conference Proceedings (OSTI)

With the emerging many-core paradigm, parallel programming must extend beyond its traditional realm of scientific applications. Converting existing sequential applications as well as developing next-generation software requires assistance from hardware, compilers and runtime systems to exploit parallelism transparently within applications. These systems must decompose applications into tasks that can be executed in parallel and then schedule those tasks to minimize load imbalance. However, many systems lack a priori knowledge about the execution time of all tasks to perform effective load balancing with low scheduling overhead. In this paper, we approach this fundamental problem using machine learning techniques first to generate performance models for all tasks and then applying those models to perform automatic performance prediction across program executions. We also extend an existing scheduling algorithm to use generated task cost estimates for online task partitioning and scheduling. We implement the above techniques in the pR framework, which transparently parallelizes scripts in the popular R language, and evaluate their performance and overhead with both a real-world application and a large number of synthetic representative test scripts. Our experimental results show that our proposed approach significantly improves task partitioning and scheduling, with maximum improvements of 21.8%, 40.3% and 22.1% and average improvements of 15.9%, 16.9% and 4.2% for LMM (a real R application) and synthetic test cases with independent and dependent tasks, respectively.

Li, J; Ma, X; Singh, K; Schulz, M; de Supinski, B R; McKee, S A

2008-10-09T23:59:59.000Z

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

How the design of JML accommodates both runtime assertion checking and formal verification  

Science Conference Proceedings (OSTI)

Specifications that are used in detailed design and in the documentation of existing code are primarily written and read by programmers. However, most formal specification languages either make heavy use of symbolic mathematical operators, which discourages ... Keywords: JML language, formal methods, java language, program verification, programming by contract, runtime assertion checking, specification languages

Gary T. Leavens; Yoonsik Cheon; Curtis Clifton; Clyde Ruby; David R. Cok

2005-03-01T23:59:59.000Z

62

JCML: A specification language for the runtime verification of Java Card programs  

Science Conference Proceedings (OSTI)

Java Card is a version of Java developed to run on devices with severe storage and processing restrictions. The applets that run on these devices are frequently intended for use in critical, highly distributed, mobile conditions. They are required to ... Keywords: JCML, JML, Java Card, Runtime verification

Umberto Souza da Costa; Anamaria Martins Moreira; Martin A. Musicante; Plcido A. Souza Neto

2012-04-01T23:59:59.000Z

63

The Ravenscar-compliant hardware run-time (Ravenhart) kernel  

E-Print Network (OSTI)

Real-time embedded systems are increasingly becoming the foundation of control systems in both the aerospace and automotive worlds. This class of systems has to meet three requirements: strict timing constraints on operational ...

Silbovitz, Anna, 1979-

2004-01-01T23:59:59.000Z

64

Termination in language-based systems  

Science Conference Proceedings (OSTI)

Language run-time systems are increasingly being embedded in systems to support run-time extensibility via mobile code. Such systems raise a number of concerns when the code running in such systems is potentially buggy or untrusted. Although sophisticated access ... Keywords: Applets, Internet, Java, resource control, soft termination, termination

Algis Rudys; Dan S. Wallach

2002-05-01T23:59:59.000Z

65

A timeshared, runtime reconfigurable hardware co-processing architecture  

E-Print Network (OSTI)

The constant desire for increased performance in microprocessor systems has led to the need for specialized hardware cores to accelerate specific computational tasks. In this thesis, we explore the potential of using FPGA ...

Gelb, Benjamin S

2009-01-01T23:59:59.000Z

66

VMSTAR: synthesizing scalable runtime environments for sensor networks  

Science Conference Proceedings (OSTI)

Sensor networks are being deployed at massive scales, containing a range of platforms. Programming paradigms for sensor networks should meet the attendant challenges of scale and heterogeneity. Researchers have considered virtual machines as a means ... Keywords: network reprogramming, operating systems, programming languages, software synthesis, virtual machines, wireless sensor networks

Joel Koshy; Raju Pandey

2005-11-01T23:59:59.000Z

67

A Model-Driven Runtime Environment for Web Applications  

E-Print Network (OSTI)

A large part of software development these days deals with building so-called Web applications. Many of these applications are database-powered and exhibit a page layout and navigational structure that is close to the class structure of the entities being managed by the system. Also, there is often only limited...

Jrg Pleumann; Stefan Haustein

2003-01-01T23:59:59.000Z

68

A Modular Building Controls Virtual Test Bed for the Integrations of Heterogeneous Systems  

E-Print Network (OSTI)

internet, and BACnet compliant BAS. The middleware allowswith Building Automation Systems (BAS). Typical applicationssimulation tools and BAS for run-time data exchange. LAB/

Wetter, Michael

2008-01-01T23:59:59.000Z

69

Geyser-1: a MIPS R3000 CPU core with fine-grained run-time power gating  

Science Conference Proceedings (OSTI)

Geyser-1 is a MIPS CPU which provides a fine-grained run-time power gating (PG) controlled by instructions. Unlike traditional PGs, it uses special standard cells in which the virtual ground (VGND) is separated from the real ground, and a certain number ...

D. Ikebuchi; N. Seki; Y. Kojima; M. Kamata; L. Zhao; H. Amano; T. Shirai; S. Koyama; T. Hashida; Y. Umahashi; H. Masuda; K. Usami; S. Takeda; H. Nakamura; M. Namiki; M. Kondo

2010-01-01T23:59:59.000Z

70

Data Parallel Execution Challenges and Runtime Performance of Agent Simulations on GPUs  

Science Conference Proceedings (OSTI)

Programmable graphics processing units (GPUs) have emerged as excellent computational platforms for certain general-purpose applications. The data parallel execution capabilities of GPUs specifically point to the potential for effective use in simulations of agent-based models (ABM). In this paper, the computational efficiency of ABM simulation on GPUs is evaluated on representative ABM benchmarks. The runtime speed of GPU-based models is compared to that of traditional CPU-based implementation, and also to that of equivalent models in traditional ABM toolkits (Repast and NetLogo). As expected, it is observed that, GPU-based ABM execution affords excellent speedup on simple models, with better speedup on models exhibiting good locality and fair amount of computation per memory element. Execution is two to three orders of magnitude faster with a GPU than with leading ABM toolkits, but at the cost of decrease in modularity, ease of programmability and reusability. At a more fundamental level, however, the data parallel paradigm is found to be somewhat at odds with traditional model-specification approaches for ABM. Effective use of data parallel execution, in general, seems to require resolution of modeling and execution challenges. Some of the challenges are identified and related solution approaches are described.

Perumalla, Kalyan S [ORNL; Aaby, Brandon G [ORNL

2008-01-01T23:59:59.000Z

71

Towards a multifrontal QR factorization for heterogeneous architectures over runtime systems  

E-Print Network (OSTI)

, computer architectures for high performance computing have considerably evolved toward heterogeneous. An example of popular heterogeneous architectures widely adopted in the high performance computing domain

Uçar, Bora

72

A runtime relocation based workflow for self dynamic reconfigurable systems design  

E-Print Network (OSTI)

A self, partial and dynamic approach to reconfiguration makes it possible to obtain higher flexibility and better performance with respect to simpler approaches; however, the price for this improvement lies in the increased ...

Santambrogio, Marco Domenico

73

A Block-Oriented Language and Runtime System for Tensor Algebra with Very Large Arrays  

Science Conference Proceedings (OSTI)

Important classes of problems in computational chemistry, notably coupled cluster methods, consist of solutions to complicated expressions defined in terms of tensors. Tensors are represented by multidimensional arrays that are typically extremely large, ...

Beverly A. Sanders; Rod Bartlett; Erik Deumens; Victor Lotrich; Mark Ponton

2010-11-01T23:59:59.000Z

74

Run-time Modeling and Estimation of Operating System Power Consumption  

E-Print Network (OSTI)

software power evaluation, as well as power management (e.g. dynamic thermal control and equal energy of a commercial OS across a wide spectrum of applications to understand OS energy profiles and then proposes to track run- time OS energy profiles, the proposed routine level OS power model offers superior accuracy

John, Lizy Kurian

75

The Uintah Framework: A Unified Heterogeneous Task Scheduling and Runtime System  

E-Print Network (OSTI)

Computing Facility, "Titan Web Page," 2011, http://www.olcf.ornl.gov/titan/. [15] J. Vetter, R. Glassbrook

Utah, University of

76

Radiation Modeling Using the Uintah Heterogeneous CPU/GPU Runtime System  

E-Print Network (OSTI)

and Oak Ridge Leadership Computing Facility. Titan Web Page, 2011. http://www.olcf.ornl.gov/titan/. [25] C

Utah, University of

77

Runtime systems and scheduling support for high-end cpu-gpu architectures  

Science Conference Proceedings (OSTI)

In recent years, multi-core CPUs and many-core GPUs have emerged as mainstream and cost-effective means for scaling. Consequently, a trend that is receiving wide attention is of heterogeneous computing platforms consisting of both CPU and GPU. Such heterogeneous ...

Vignesh Trichy Ravi / Gagan Agrawal

2012-01-01T23:59:59.000Z

78

An integrated debugging environment for reprogrammble hardware systems  

Science Conference Proceedings (OSTI)

Reprogrammable hardware systems are traditionally very difficult to debug due to their high level of parallelism. In our solution to this problem, features are inserted into the user's design which allow the system to be monitored and updated at runtime. ...

Kevin Camera; Hayden Kwok-Hay So; Robert W. Brodersen

2005-09-01T23:59:59.000Z

79

System Assurance: Beyond Detecting Vulnerabilities, 1st edition  

Science Conference Proceedings (OSTI)

In this day of frequent acquisitions and perpetual application integrations, systems are often an amalgamation of multiple programming languages and runtime platforms using new and legacy content. Systems of such mixed origins are increasingly vulnerable ...

Nikolai Mansourov; Djenana Campara

2010-12-01T23:59:59.000Z

80

V-132: IBM Tivoli System Automation Application Manager Multiple...  

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

3.1, 3.2, 3.2.1, and 3.2.2 ABSTRACT: Multiple security vulnerabilities exist in the IBM Java Runtime Environment component of IBM Tivoli System Automation Application Manager which...

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Architectures for Adaptive Low-Power Embedded Multimedia Systems.  

E-Print Network (OSTI)

??This Ph.D. thesis describes novel hardware/software architectures for adaptive low-power embedded multimedia systems. Novel techniques for run-time adaptive energy management are proposed, such that both (more)

Shafique, Muhammad

2011-01-01T23:59:59.000Z

82

Dynamic Fault-Tolerance and Metrics for Battery Powered, Failure-Prone Systems  

Science Conference Proceedings (OSTI)

Emerging VLSI technologies and platforms are giving rise tosystems with inherently high potential for runtime failure.Such failures range from intermittent electrical and mechanicalfailures at the system level, to device failures at the chip level.Techniques ...

Phillip Stanley-Marbell; Diana Marculescu

2003-11-01T23:59:59.000Z

83

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

84

Robust runtime optimization and skew-resistant execution of analytical SPARQL queries on pig  

Science Conference Proceedings (OSTI)

We describe a system that incrementally translates SPARQL queries to Pig Latin and executes them on a Hadoop cluster. This system is designed to work efficiently on complex queries with many self-joins over huge datasets, avoiding job failures even in ...

Spyros Kotoulas; Jacopo Urbani; Peter Boncz; Peter Mika

2012-11-01T23:59:59.000Z

85

Runtime I/O re-routing + throttling on HPC storage  

Science Conference Proceedings (OSTI)

Massively parallel storage systems are becoming more and more prevalent on HPC systems due to the emergence of a new generation of data-intensive applications. To achieve the level of I/O throughput and capacity that is demanded by data intensive applications, ...

Qing Liu, Norbert Podhorszki, Jeremy Logan, Scott Klasky

2013-06-01T23:59:59.000Z

86

CHATR: a generic speech synthesis system  

Science Conference Proceedings (OSTI)

This paper describes a generic speech synthesis system called CHATR which is being developed at ATR. CHATR is designed in a modular way so that module parameters and even which modules are actually used may be set and selected at runtime. Although some ...

Alan W. Black; Paul Taylor

1994-08-01T23:59:59.000Z

87

Resource Reclaiming in Hard Real-Time Systems with Static and Dynamic Workloads  

E-Print Network (OSTI)

This paper addresses resource reclaiming in the context of non-preemptive priority list scheduling for hard real-time systems. Such scheduling is inherently susceptible to multiprocessor timing anomalies. We present low overhead run-time stabilization methods for a general tasking model that allows phantom tasks as a mechanism to model processor external events. A family of scheduling algorithms is de?ned, that guarantees run-time stabilization for systems consisting of tasks with hard and soft deadlines. The later, i.e. soft tasks, may arrive dynamically. Stabilization is addressed in the context of dynamic and static task to processor allocation. Previous stabilization methods, focused on apriori stabilization for static workloads with dynamic task to processor allocation, thus cannot support this general scheduling model. By taking advantage of run-time information, the stabilization algorithms use the scan-window approach to prevent instability from occurring. Mechanisms are introduced that explicitly control the run-time behavior of tasks with hard deadlines. As a consequence, processor resources become available that can be used to improve processor utilization and response time of soft tasks. The resulting scan algorithms are intended for real world applications where low run-time overhead and a realistic task model are needed. 1

A. W. Krings; M. H. Azadmanesh

1997-01-01T23:59:59.000Z

88

A profiling method by PCB hooking and its application for memory fault detection in embedded system operational test  

Science Conference Proceedings (OSTI)

Context: An operational test means a system test that examines whether or not all software or hardware components comply with the requirements given to a system which is deployed in an operational environment. Objective: It is a necessary lightweight-profiling ... Keywords: Embedded software, Embedded system, Operational test, PCB hooking, Profiling method, Runtime memory fault

Jooyoung Seo; Byoungju Choi; Suengwan Yang

2011-01-01T23:59:59.000Z

89

xTune: A formal methodology for cross-layer tuning of mobile embedded systems  

Science Conference Proceedings (OSTI)

Resource-limited mobile embedded systems can benefit greatly from dynamic adaptation of system parameters. We propose a novel approach that employs iterative tuning using lightweight formal verification at runtime with feedback for dynamic adaptation. ... Keywords: Cross-layer optimization, formal methods, iterative tuning

Minyoung Kim; Mark-Oliver Stehr; Carolyn Talcott; Nikil Dutt; Nalini Venkatasubramanian

2012-12-01T23:59:59.000Z

90

Version-consistent dynamic reconfiguration of component-based distributed systems  

Science Conference Proceedings (OSTI)

There is an increasing demand for the runtime reconfiguration of distributed systems in response to changing environments and evolving requirements. Reconfiguration must be done in a safe and low-disruptive way. In this paper, we propose version consistency ... Keywords: component-based distributed system, dynamic reconfiguration, version-consistency

Xiaoxing Ma; Luciano Baresi; Carlo Ghezzi; Valerio Panzica La Manna; Jian Lu

2011-09-01T23:59:59.000Z

91

A modified dual-priority scheduling algorithm for hard real-time systems to improve energy savings  

Science Conference Proceedings (OSTI)

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 exploits the priority scheme to lengthen the runtime of tasks by ... Keywords: dual-priority scheduling, energy-awareness, fixed-priority scheduling, hard real-time systems, on-line scheduling

M. Angels Moncus; Alex Arenas; Jesus Labarta

2003-01-01T23:59:59.000Z

92

System support for exploration and expert feedback in resolving conflicts during integration of metadata  

Science Conference Proceedings (OSTI)

A critical reality in integration is that knowledge obtained from different sources may often be conflicting. Conflict-resolution, whether performed during the design phase or during run-time, can be costly and, if done without a proper understanding ... Keywords: Exploration of alternatives, Feedback-based conflict-resolution, Metadata integration, System feedback, Taxonomy, User feedback

K. Seluk Candan; Huiping Cao; Yan Qi; Maria Luisa Sapino

2008-11-01T23:59:59.000Z

93

Introduction to the ICCS 2007 Workshop on Dynamic Data Driven Applications Systems  

Science Conference Proceedings (OSTI)

This is the 5thInternational Workshop on Dynamic Data Driven Applications Systems (DDDAS), organized in conjunction with ICCS. The DDDAS concept entails the ability to dynamically incorporate data into an executing application simulation, ... Keywords: applications, dynamic runtime, grids, measurements, sensors

Frederica Darema

2007-05-01T23:59:59.000Z

94

Real-time embedded systems powered by FPGA dynamic partial self-reconfiguration: a case study oriented to biometric recognition applications  

Science Conference Proceedings (OSTI)

This work aims to pave the way for an efficient open system architecture applied to embedded electronic applications to manage the processing of computationally complex algorithms at real-time and low-cost. The target is to define a standard architecture ... Keywords: Automatic fingerprint authentication system, Dynamic partial self-reconfiguration, FPGA, Reconfiguration controller, Run-time reconfigurable computing

Francisco Fons, Mariano Fons, Enrique Cant, Mariano Lpez

2013-09-01T23:59:59.000Z

95

Hybrid Systems Architectures  

E-Print Network (OSTI)

ion suppression of lower-level information not relevant for the current task Encapsulation (information hiding) implementation details are hidden, only interface information is visible F. Kurfe Hybrid System Architectures ASHS '96 37 Inheritance common characteristics are derived from ancestors Polymorphism appropriate instances of classes and operators can be selected at runtime Advantages ffl very flexible ffl suitable for large systems ffl support reuse Problems ffl handling of new and atypical situations ffl quite complex ffl formal verification F. Kurfe Hybrid System Architectures ASHS '96 38 Expert System What is an Expert System? Basic concepts ffl designer / user supplies facts and information ffl user asks queries and receives expert advice ffl limited to a problem domain (knowledge domain) Components ffl user interface ffl knowledge base ffl inference mechanism Synonyms: knowledge-based system, knowledge-based expert system F. Kurfe Hybrid System Archi...

Franz J. Kurfe

1996-01-01T23:59:59.000Z

96

Co-Simulation of Building Energy and Control Systems with the Building Controls Virtual Test Bed  

Science Conference Proceedings (OSTI)

This article describes the implementation of the Building Controls Virtual Test Bed (BCVTB). The BCVTB is a software environment that allows connecting different simulation programs to exchange data during the time integration, and that allows conducting hardware in the loop simulation. The software architecture is a modular design based on Ptolemy II, a software environment for design and analysis of heterogeneous systems. Ptolemy II provides a graphical model building environment, synchronizes the exchanged data and visualizes the system evolution during run-time. The BCVTB provides additions to Ptolemy II that allow the run-time coupling of different simulation programs for data exchange, including EnergyPlus, MATLAB, Simulink and the Modelica modelling and simulation environment Dymola. The additions also allow executing system commands, such as a script that executes a Radiance simulation. In this article, the software architecture is presented and the mathematical model used to implement the co-simulation is discussed. The simulation program interface that the BCVTB provides is explained. The article concludes by presenting applications in which different state of the art simulation programs are linked for run-time data exchange. This link allows the use of the simulation program that is best suited for the particular problem to model building heat transfer, HVAC system dynamics and control algorithms, and to compute a solution to the coupled problem using co-simulation.

Wetter, Michael

2010-08-22T23:59:59.000Z

97

E-AMOM: An Energy-Aware Modeling and Optimization Methodology for Scientific Applications on Multicore Systems  

E-Print Network (OSTI)

Power consumption is an important constraint in achieving efficient execution on High Performance Computing Multicore Systems. As the number of cores available on a chip continues to increase, the importance of power consumption will continue to grow. In order to achieve improved performance on multicore systems scientific applications must make use of efficient methods for reducing power consumption and must further be refined to achieve reduced execution time. In this dissertation, we introduce a performance modeling framework, E-AMOM, to enable improved execution of scientific applications on parallel multicore systems with regards to a limited power budget. We develop models for each application based upon performance hardware counters. Our models utilize different performance counters for each application and for each performance component (runtime, system power consumption, CPU power consumption, and memory power consumption) that are selected via our performance-tuned principal component analysis method. Models developed through E-AMOM provide insight into the performance characteristics of each application that affect performance for each component on a parallel multicore system. Our models are more than 92% accurate across both Hybrid (MPI/OpenMP) and MPI implementations for six scientific applications. E-AMOM includes an optimization component that utilizes our models to employ run-time Dynamic Voltage and Frequency Scaling (DVFS) and Dynamic Concurrency Throttling to reduce power consumption of the scientific applications. Further, we optimize our applications based upon insights provided by the performance models to reduce runtime of the applications. Our methods and techniques are able to save up to 18% in energy consumption for Hybrid (MPI/OpenMP) and MPI scientific applications and reduce the runtime of the applications up to 11% on parallel multicore systems.

Lively, Charles

2012-05-01T23:59:59.000Z

98

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

99

EIA 176 Query System, 2004  

Gasoline and Diesel Fuel Update (EIA)

4 4 EIA Home > Natural Gas > Natural Gas Data Publications EIA 176 Query System 2004 The EIA-176 Query System is a Windows-based system which runs under Windows operating systems 95, 98, 2000, NT - 4.0 Service Pack 3 or later. It provides a method of extracting and using the company level data filed on the Form EIA-176, and saving the query results in various media and formats. There are pre-selected data queries, which allow the user to select and run the most often-used queries, as well as the ability to create a customized query. Self-extracting executable files with run-time versions of Access are required to set up the system. You may also download the data tables if you already have Microsoft Access on your computer. For instructions, please refer to the documentation listed below.

100

EIA 176 Query System, 2001  

Gasoline and Diesel Fuel Update (EIA)

1 1 EIA Home > Natural Gas > Natural Gas Data Publications EIA 176 Query System 2001 The EIA-176 Query system is a Windows-based system which runs under Windows operating systems 95, 98, 2000, NT - 4.0 Service Pack 3 or later. It provides a method of extracting and using the company level data filed on the Form EIA-176, and saving the query results in various media and formats. There are pre-selected data queries, which allow the user to select and run the most often-used queries, as well as the ability to create a customized query. Self-extracting executable files with run-time versions of Access are required to set up the system. You may also download the data tables if you already have Microsoft Access on your computer. For instructions, please read the documentation file(s) listed below

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

EIA 176 Query System, 2003  

Gasoline and Diesel Fuel Update (EIA)

3 3 EIA Home > Natural Gas > Natural Gas Data Publications EIA 176 Query System 2003 The EIA-176 Query System is a Windows-based system which runs under Windows operating systems 95, 98, 2000, NT - 4.0 Service Pack 3 or later. It provides a method of extracting and using the company level data filed on the Form EIA-176, and saving the query results in various media and formats. There are pre-selected data queries, which allow the user to select and run the most often-used queries, as well as the ability to create a customized query. Self-extracting executable files with run-time versions of Access are required to set up the system. You may also download the data tables if you already have Microsoft Access on your computer. For instructions, please refer to the documentation read the documentation file(s) listed below.

102

EIA - State Energy Data System  

U.S. Energy Information Administration (EIA)

Unhandled exception thrown from /emeu/states/hf.jsp:90 jrun.jsp.runtime.UncaughtPageException: Unhandled exception thrown from /emeu/states/hf.jsp:90 ...

103

A Dynamic Platform for Runtime Adaptation  

E-Print Network (OSTI)

We present a middleware platform for assembling pervasive applications that demand fault-tolerance and adaptivity in distributed, dynamic environments. Unlike typical adaptive middleware approaches, in which sophisticated ...

Pham, Hubert

104

Runtime Reprioritization for Online Aggregation Queries.  

E-Print Network (OSTI)

??The need for interactive ad-hoc analytics has been steadily rising. The traditional batch processing of large data takes order of seconds to several minutes for (more)

Tunga Gopinath, Karthik

2013-01-01T23:59:59.000Z

105

Autonomous, teleoperated, and shared control of robot systems  

Science Conference Proceedings (OSTI)

This paper illustrates how different modes of operation such as bilateral teleoperation, autonomous control, and shared control can be described and implemented using combinations of modules in the SMART robot control architecture. Telerobotics modes are characterized by different ``grids`` of SMART icons, where each icon represents a portion of run-time code that implements a passive control law. By placing strict requirements on the module`s input-output behavior and using scattering theory to develop a passive sampling technique, a flexible, expandable telerobot architecture is achieved. An automatic code generation tool for generating SMART systems is also described.

Anderson, R.J.

1994-12-31T23:59:59.000Z

106

ACE: A Resource-Aware Adaptive Compression Environment Sezgin Sucu Chandra Krintz  

E-Print Network (OSTI)

Runtime Platform (ORP) [4]. ORP is a dynamic optimization system from Intel Corporation that is available

Krintz, Chandra

107

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

108

V-132: IBM Tivoli System Automation Application Manager Multiple  

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

2: IBM Tivoli System Automation Application Manager Multiple 2: IBM Tivoli System Automation Application Manager Multiple Vulnerabilities V-132: IBM Tivoli System Automation Application Manager Multiple Vulnerabilities April 12, 2013 - 6:00am Addthis PROBLEM: IBM has acknowledged multiple vulnerabilities in IBM Tivoli System Automation Application Manager PLATFORM: The vulnerabilities are reported in IBM Tivoli System Automation Application Manager versions 3.1, 3.2, 3.2.1, and 3.2.2 ABSTRACT: Multiple security vulnerabilities exist in the IBM Java Runtime Environment component of IBM Tivoli System Automation Application Manager which may affect the product REFERENCE LINKS: Secunia Advisory: SA53006 IBM Security Bulletin 21633991 IBM Security Bulletin 21633992 CVE-2011-3563 CVE-2012-0497 CVE-2012-0498 CVE-2012-0499 CVE-2012-0501

109

V-132: IBM Tivoli System Automation Application Manager Multiple  

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

2: IBM Tivoli System Automation Application Manager Multiple 2: IBM Tivoli System Automation Application Manager Multiple Vulnerabilities V-132: IBM Tivoli System Automation Application Manager Multiple Vulnerabilities April 12, 2013 - 6:00am Addthis PROBLEM: IBM has acknowledged multiple vulnerabilities in IBM Tivoli System Automation Application Manager PLATFORM: The vulnerabilities are reported in IBM Tivoli System Automation Application Manager versions 3.1, 3.2, 3.2.1, and 3.2.2 ABSTRACT: Multiple security vulnerabilities exist in the IBM Java Runtime Environment component of IBM Tivoli System Automation Application Manager which may affect the product REFERENCE LINKS: Secunia Advisory: SA53006 IBM Security Bulletin 21633991 IBM Security Bulletin 21633992 CVE-2011-3563 CVE-2012-0497 CVE-2012-0498 CVE-2012-0499 CVE-2012-0501

110

EIA - State Energy Data System - U.S. Energy Information ...  

U.S. Energy Information Administration (EIA)

Unhandled exception thrown from /emeu/states/hf.jsp:90 jrun.jsp.runtime.UncaughtPageException: Unhandled exception thrown from /emeu/states/hf.jsp:90 ...

111

The SysMES Framework: System Management for Networked Embedded Systems and Clusters  

E-Print Network (OSTI)

Automated system management for large distributed and heterogeneous environments is a common challenge in modern computer sciences. Desired properties of such a management system are, among others, a minimal dependency on human operators for problem recognition and solution, adaptability to increasing loads, fault tolerance and the flexibility to integrate new management resources at runtime. Existing tools address parts of these requirements however there is no single integrated framework which possesses all mentioned characteristics. SysMES was developed as an integrated framework for automated monitoring and management of networked devices. In order to achieve the requirements of scalability and fault tolerance, a fully distributed and decentralized architecture has been chosen. The framework comprises a monitoring module, a rule engine and an executive module for the execution of actions. A formal language has been defined which allows administrators to define complex spatial and temporal rule conditions ...

Lara Martinez, Camilo Ernesto

112

Argo: An exascale operating system | Argonne National Laboratory  

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

Argo: An exascale operating system Argo: An exascale operating system Architecture overview of Argo Architecture overview of Argo Argo is a new exascale operating system and runtime system designed to support extreme-scale scientific computation. It is built on an agile, new modular architecture that supports both global optimization and local control. It aims to efficiently leverage new chip and interconnect technologies while addressing the new modalities, programming environments, and workflows expected at exascale. It is designed from the ground up to run future high-performance computing applications at extreme scales. At the heart of the project are four key innovations: dynamic reconfiguring of node resources in response to workload, allowance for massive concurrency, a hierarchical framework for power and fault management, and a

113

EIA - State Energy Data System  

U.S. Energy Information Administration (EIA)

Unhandled exception thrown from /emeu/states/hf.jsp:90 jrun.jsp.runtime.UncaughtPageException: Unhandled exception thrown from /emeu/states/hf.jsp:90 at jrun.jsp ...

114

EIA 176 Query System, 2002  

Gasoline and Diesel Fuel Update (EIA)

2 2 EIA Home > Natural Gas > Natural Gas Data Publications EIA 176 Query System 2002 EIA 176 Query System 2002 Release date: February 2, 2004 Next release date: February 2005 The EIA-176 Query system is a Windows-based system which runs under Windows operating systems 95, 98, 2000, NT - 4.0 Service Pack 3 or later. It provides a method of extracting and using the company level data filed on the Form EIA-176, and saving the query results in various media and formats. There are pre-selected data queries, which allow the user to select and run the most often-used queries, as well as the ability to create a customized query. Self-extracting executable files with run-time versions of Access are required to set up the system. You may also download the data tables if you already have Microsoft Access on your computer. For instructions, please read the documentation file(s) listed below.

115

Designing a new operating system for exascale architectures | Argonne  

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

Designing a new operating system for exascale architectures Designing a new operating system for exascale architectures August 7, 2013 Tweet EmailPrint Argonne National Laboratory has been awarded a grant from the Department of Energy Office of Science to lead Argo, a multi-institutional research project to design and develop a platform-neutral prototype of an exascale operating system and runtime software. Researchers in Argonne's Mathematics and Computer Science Division will collaborate with scientists from Pacific Northwest National Laboratory and Lawrence Livermore National Laboratory, as well as with several universities nationwide, on the three-year, $9.75 million project. The world's fastest computers have proved essential for scientific discoveries, spanning from designing new materials to understanding the

116

System Design Document: Hardware Accelerated Market Order Packet Generation  

E-Print Network (OSTI)

This document specifies the design of Hardware Accelerated Market Order Packet Generator. The designed system aims at accelerating the release of packets on the network. Optimization is acheived in terms of reducing the latency, decreasing the data uploaded on the Avalon bus which will eventually lead to power optimization. A software application running on a soft-processor would change the transaction-data going over the network in runtime. This document describes the overall architecture of the system, along with describing the design of the custom ethernet accelerator. Typically the ethernet controller should be capable of receiving and sending data over the network. Our implementation will accelerate the sending of data to the network. The receiving of data will still be handled in software.

Ankur Gupta; Dhananjay Palshikar; Mithila Paryekar; Sushant Bhardwaj

2012-01-01T23:59:59.000Z

117

A Framework for Evaluating Deployed Security Systems: Is There a Chink in your ARMOR?  

E-Print Network (OSTI)

A growing number of security applications are being developed and deployed to explicitly reduce risk from adversaries actions. However, there are many challenges when attempting to evaluate such systems, both in the lab and in the real world. Traditional evaluations used by computer scientists, such as runtime analysis and optimality proofs, may be largely irrelevant. The primary contribution of this paper is to provide a preliminary framework which can guide the evaluation of such systems and to apply the framework to the evaluation of ARMOR (a system deployed at LAX since August 2007). This framework helps to determine what evaluations could, and should, be run in order to measure a systems overall utility. A secondary contribution of this paper is to help familiarize our community with some of the difficulties inherent in evaluating deployed applications, focusing on those in security domains. Povzetek: Kako ovrednotiti varnostne aplikacije, kot recimo sistem ARMOR, ki je od 2007 dalje v uporabi na LAX?

Matthew E. Taylor; Christopher Kiekintveld; Craig Western; Milind Tambe

2009-01-01T23:59:59.000Z

118

The Impact of a Fault Tolerant MPI on Scalable Systems Services and Applications  

Science Conference Proceedings (OSTI)

Exascale targeted scientific applications must be prepared for a highly concurrent computing environment where failure will be a regular event during execution. Natural and algorithm-based fault tolerance (ABFT) techniques can often manage failures more efficiently than traditional checkpoint/restart techniques alone. Central to many petascale applications is an MPI standard that lacks support for ABFT. The Run-Through Stabilization (RTS) proposal, under consideration for MPI 3, allows an application to continue execution when processes fail. The requirements of scalable, fault tolerant MPI implementations and applications will stress the capabilities of many system services. System services must evolve to efficiently support such applications and libraries in the presence of system component failures. This paper discusses how the RTS proposal impacts system services, highlighting specific requirements. Early experimentation results from Cray systems at ORNL using prototype MPI and runtime implementations are presented. Additionally, this paper outlines fault tolerance techniques targeted at leadership class applications.

Graham, Richard L [ORNL; Hursey, Joshua J [ORNL; Vallee, Geoffroy R [ORNL; Naughton, III, Thomas J [ORNL; Boehm, Swen [ORNL

2012-01-01T23:59:59.000Z

119

Systems  

E-Print Network (OSTI)

Abstract Developing usable and robust mixed reality systems requires unique humancomputer interaction techniques and customized hardware systems. The design of the hardware is directed by the requirements of the rich 3D interactions that can be performed using immersive mobile MR systems. Geometry modeling and capture, navigational annotations, visualizations, and training simulations are all enhanced using augmented computer graphics. We present the design guidelines that have led us through 10 years of evolving mobile outdoor MR hardware systems.

Benjamin Avery; Ross T. Smith; Wayne Piekarski; Bruce H. Thomas

2009-01-01T23:59:59.000Z

120

A Model for Developing Component-Based and Aspect-Oriented Systems  

E-Print Network (OSTI)

Abstract. Aspect-Oriented Programming (AOP) and Component-Based Software Engineering (CBSE) offer solutions to improve the separation of concerns and to enhance a program structure. If the integration of AOP into CBSE has already been proposed, none of these solutions focus on the application of CBSE principles to AOP. In this paper we propose a twofold integration of AOP and CBSE. We introduce a general model for components and aspects, named Fractal Aspect Component (FAC). FAC decomposes a software system into regular components and aspect components (ACs), where an AC is a regular component that embodies a crosscutting concern. We reify the aspect domain of an AC and the relationship between an AC and a component, called an aspect binding, as first-class runtime entities. This clarifies the architecture of a system where components and aspects coexist. The system can evolve from the design to the execution by adding or removing components, aspects or bindings. 1

Nicolas Pessemier; Lionel Seinturier; Thierry Coupaye; Laurence Duchien

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Autonomous Observing and Control Systems for PAIRITEL, a 1.3m Infrared Imaging Telescope  

E-Print Network (OSTI)

The Peters Automated Infrared Imaging Telescope (PAIRITEL) is the first meter-class telescope operating as a fully robotic IR imaging system. Dedicated in October 2004, PAIRITEL began regular observations in mid-December 2004 as part of a 1.5 year commissioning period. The system was designed to respond without human intervention to new gamma-ray burst transients: this milestone was finally reached on November 9, 2005 but the telescope had a number of semi-automated sub-10 minute responses throughout early commissioning. When not operating in Target of Opportunity mode, PAIRITEL performs a number of queue scheduled transient monitoring campaigns. To achieve this level of automation, we have developed communicating tools to connect the various sub-systems: an intelligent queue scheduling database, run-time configurable observation sequence software, a data reduction pipeline, and a master state machine which monitors and controls all functions within and affecting the observatory.

J. S. Bloom; Dan L. Starr; Cullen H. Blake; M. F. Skrutskie; Emilio E. Falco

2005-11-30T23:59:59.000Z

122

Strategic planning for power system restorations  

SciTech Connect

This paper considers the power system restoration planning problem (PSRPP) for disaster recovery, a fundamental problem faced by all populated areas. PSRPPs are complex stochastic optimization problems that combine resource allocation, warehouse location, and vehicle routing considerations. Furthermore, electrical power systems are complex systems whose behavior can only be determined by physics simulations. Moreover, these problems must be solved under tight runtime constraints to be practical in real-world disaster situations. This work is three fold: (1) it formalizes the specification of PSRPPs; (2) introduces a simple optimization-simulation hybridization necessary for solving PSRPPs; and (3) presents a complete restoration algorithm that utilizes the strengths of mixed integer programming, constraint programming, and large neighborhood search. This paper studied a novel problem in the field of humanitarian logistics, the Power System Restoration Problem (PSRPP). The PSRPP models the strategic planning process for post disaster power system recovery. The paper proposed a multi-stage stochastic hybrid optimization algorithm that yields high quality solutions to real-world benchmarks provided by Los Alamos National Laboratory (LANL). The algorithm uses a variety of technologies, including MIP, constraint programming, and large neighborhood search, to exploit the structure of each individual optimization subproblem. The experimental results on hurricane disaster benchmarks indicate that the algorithm is practical from a computational standpoint and produce significant improvements over existing relief delivery procedures.

Bent, Russell W [Los Alamos National Laboratory; Van Hententyck, Pascal [BROWN UNIV.; Coffrin, Carleton [BROWN UNIV.

2010-10-12T23:59:59.000Z

123

Simulation-based Performance Analysis and Tuning for a Two-level Directly Connected System  

Science Conference Proceedings (OSTI)

Hardware and software co-design is becoming increasingly important due to complexities in supercomputing architectures. Simulating applications before there is access to the real hardware can assist machine architects in making better design decisions that can optimize application performance. At the same time, the application and runtime can be optimized and tuned beforehand. BigSim is a simulation-based performance prediction framework designed for these purposes. It can be used to perform packet-level network simulations of parallel applications using existing parallel machines. In this paper, we demonstrate the utility of BigSim in analyzing and optimizing parallel application performance for future systems based on the PERCS network. We present simulation studies using benchmarks and real applications expected to run on future supercomputers. Future petascale systems will have more than 100,000 cores, and we present simulations at that scale.

Totoni, E; Bhatele, A; Bohm, E J; Jain, N; Mendes, C L; Mokos, R M; Zheng, G; Kale, L V

2011-09-19T23:59:59.000Z

124

Informatica 29 page xxxyyy 1 A Framework for Evaluating Deployed Security Systems: Is There a Chink in your ARMOR?  

E-Print Network (OSTI)

A growing number of security applications are being developed and deployed to explicitly reduce risk from adversaries actions. However, there are many challenges when attempting to evaluate such systems, both in the lab and in the real world. Traditional evaluations used by computer scientists, such as runtime analysis and optimality proofs, may be largely irrelevant. The primary contribution of this paper is to provide a preliminary framework which can guide the evaluation of such systems and to apply the framework to the evaluation of ARMOR (a system deployed at LAX since August 2007). This framework helps to determine what evaluations could, and should, be run in order to measure a systems overall utility. A secondary contribution of this paper is to help familiarize our community with some of the difficulties inherent in evaluating deployed applications, focusing on those in security domains. 1

Matthew E. Taylor; Christopher Kiekintveld; Craig Western; Milind Tambe

2009-01-01T23:59:59.000Z

125

A distributed hard real-time Java system for high mobility components  

E-Print Network (OSTI)

In this work we propose a methodology for providing real-time capabilities to component-based, on-the-fly recon?gurable, distributed systems. In such systems, software components migrate across computational resources at run-time to allow applications to adapt to changes in user requirements or to external events. We describe how we achieve run-time recon?guration in distributed Java applications by appropriately migrating servers. Guaranteed-rate schedulers at the servers provide the necessary temporal protection and so simplify remote method invocation management. We describe how we manage overhead and resource utilization by controlling the parameters of the server schedulers. According to our measurements, this methodology provides real-time capability to component-based recon?gurable distributed systems in an effcient and effective way. In addition, we propose a new resource discovery protocol, REALTOR, which is based on a combination of pull-based and push-based resource information dissemination. REALTOR has been designed for real-time component-based distributed applications in very dynamic or adverse environments. REALTOR supports survivability and information assurance by allowing the migration of components to safe locations under emergencies suchas externalattack, malfunction, or lackofresources. Simulation studies show that under normal and heavy load conditions REALTOR remains very effective in finding available resources, and does so with a reasonably low communication overhead.REALTOR 1)effectively locates resources under highly dynamic conditions, 2) has an overhead that is system-size independent, and 3) works well in highlyadverse environments.We evaluate the effectiveness of a REALTOR implementation as part of Agile Objects, an infrastructure for real-time capable, highly mobile Java components.

Rho, Sangig

2004-12-01T23:59:59.000Z

126

Towards Runtime Reconfiguration of Application Control Policies in the Cloud  

Science Conference Proceedings (OSTI)

The main contribution of this paper is the description of an architecture for dynamically controlling the behavior of the applications deployed in the Cloud by using a set of high-level rules. This architecture is flexible enough to enable the re-definition ... Keywords: Application governance, Cloud, Dynamic reconfiguration, Rule based, Service behavior

Luis M. Vaquero; Daniel Morn; Fermn Galn; Jose M. Alcaraz-Calero

2012-12-01T23:59:59.000Z

127

Efficient virtual machine support of runtime structural reflection  

Science Conference Proceedings (OSTI)

Increasing trends towards adaptive, distributed, generative and pervasive software have made object-oriented dynamically typed languages become increasingly popular. These languages offer dynamic software evolution by means of reflection, facilitating ... Keywords: Dynamically typed languages, JIT compilation, Prototype-based object-oriented model, SSCLI, Structural reflection, Virtual machine

Francisco Ortin; Jose Manuel Redondo; J. Baltasar Garca Perez-Schofield

2009-08-01T23:59:59.000Z

128

Unifying Design and Runtime Software Adaptation Using Aspect Models  

E-Print Network (OSTI)

guides de la CIBSE (CIBSE, 2005 et CIBSE, 2006). 1.2.1.2 Corrélation de Phaff et De Gids Phaff et De Gids

Paris-Sud XI, Université de

129

NDSeq: runtime checking for nondeterministic sequential specifications of parallel correctness  

Science Conference Proceedings (OSTI)

We propose to specify the correctness of a program's parallelism using a sequential version of the program with controlled nondeterminism. Such a nondeterministic sequential specification allows (1) the correctness of parallel interference to ... Keywords: parallel correctness, serializability, specification

Jacob Burnim; Tayfun Elmas; George Necula; Koushik Sen

2011-06-01T23:59:59.000Z

130

Transparent run-time defense against stack smashing attacks  

Science Conference Proceedings (OSTI)

The exploitation of buffer overflow vulnerabilities in process stacks constitutes a significant portion of security attacks. We present two new methods to detect and handle such attacks. In contrast to previous work, the new methods work with any existing ...

Arash Baratloo; Navjot Singh; Timothy Tsai

2000-06-01T23:59:59.000Z

131

Generalizing mapreduce as a unified cloud and HPC runtime  

Science Conference Proceedings (OSTI)

Computational simulation and analysis were one of the keys to the future in data-intensive science as a "fourth paradigm" of scientific discovery but facing a major challenge as handling the incredible increases in dataset sizes. This requires attractive ... Keywords: HPC, cloud, data analysis, fault tolerance, interoperability, iterative mapreduce, map collective, scaling performance

Judy Qiu

2011-11-01T23:59:59.000Z

132

Runtime detection and optimization of collective communication patterns  

Science Conference Proceedings (OSTI)

Parallelism is steadily growing, remote-data access will soon dominate the execution time of large-scale applications. Many large-scale communication patterns expose significant structure that can be used to schedule communications accordingly. In this ... Keywords: collective operations, dynamic optimization, mpi

Torsten Hoefler; Timo Schneider

2012-09-01T23:59:59.000Z

133

Investigating Autonomic Runtime Management Strategies for SAMR Applications  

E-Print Network (OSTI)

allocation, data-distribution, load balancing, communica- tion, and coordination. Furthermore, the underlying the performance of SAMR applications in distributed and dynamic Grid execution environments. Key Grid Jingmei Yang,2 Yeliang Zhang,2 Manish Parashar,1 and Salim Hariri2 1 Department of Electrical and Computer

Parashar, Manish

134

Efficient Power Profiling for Battery-Driven Embedded System Design  

E-Print Network (OSTI)

The ability to efficiently and accurately estimate battery life under different design choices at the system level is an important aid in designing battery-efficient systems. Recently developed battery models help by estimating battery life under given profiles of the battery discharge current over time. However, existing techniques for energy (or average power) estimation do not provide sufficient information (such as time profiles of system power consumption) to drive battery-life estimation. Techniques that are capable of generating such profiles often lack the efficiency required to support exploration at the system level. In this paper, we describe techniques for efficient generation of system-level power profiles, for use in a battery-life estimation framework. Our power profiling technique allows a designer to experiment with: 1) the mapping of system tasks to a set of architectural components and 2) the mapping of system communications to a specified communication architecture, and efficiently generate system power profiles for each alternative. The resulting profiles can then be analyzed using existing battery models to estimate battery lifetime and capacity. Extensive experiments conducted on an IEEE 802.11 MAC processor design demonstrate that our power profiler offers orders of magnitude improvement in runtimes over state-of-the-art cosimulation-based power estimation techniques, while suffering minimal loss of accuracy (average profiling error was 3.8%).

Kanishka Lahiri; Anand Raghunathan; Senior Member; Sujit Dey

2004-01-01T23:59:59.000Z

135

Checking the Data Sharing Strategies of Concurrent Systems Level Code  

E-Print Network (OSTI)

lines of applica- tion and benchmark code, and observe manageable overheadssmall (about 400k lines) Linux kernel. Overhead incurred byover 500k lines of code. Runtime overhead av- eraged 11%

Anderson, Zachary Ryan

2010-01-01T23:59:59.000Z

136

EIA - State Energy Data System - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Unhandled exception thrown from /emeu/states/hf.jsp:90 jrun.jsp.runtime.UncaughtPageException: Unhandled exception thrown from /emeu/states/hf.jsp:90 at jrun.jsp ...

137

Simulation of Energy Management Systems in EnergyPlus  

SciTech Connect

An energy management system (EMS) is a dedicated computer that can be programmed to control all of a building's energy-related systems, including heating, cooling, ventilation, hot water, interior lighting, exterior lighting, on-site power generation, and mechanized systems for shading devices, window actuators, and double facade elements. Recently a new module for simulating an EMS was added to the EnergyPlus whole-building energy simulation program. An essential part of the EMS module is the EnergyPlus Runtime Language (ERL), which is a simple programming language that is used to specify the EMS control algorithms. The new EMS controls and the flexibility of ERL allow EnergyPlus to simulate many novel control strategies that are not possible with the previous generation of building energy simulation programs. This paper surveys the standard controls in EnergyPlus, presents the new EMS features, describes the implementation of the module, and explores some of the possible applications for the new EMS capabilities in EnergyPlus.

Ellis, P. G.; Torcellini, P. A.; Crawley, D.

2008-01-01T23:59:59.000Z

138

Monitoring and Evaluation of Smolt Migration in the Columbia Basin : Volume IX : Evaluation of the 2001 Predictions of the Run-Timing of Wild and Hatchery-Reared Migrant Salmon and Steelhead Trout Migrating to Lower Granite, Rock Island, McNary, and John Day Dams using Program RealTime.  

DOE Green Energy (OSTI)

Program RealTime provided tracking and forecasting of the 2001 inseason outmigration via the internet for eighteen PIT-tagged stocks of wild salmon and steelhead to Lower Granite and/or McNary dams and eleven passage-indexed stocks to Rock Island, McNary, or John Day dams. Nine of the PIT-tagged stocks tracked this year were new to the project. Thirteen ESUs of wild subyearling and yearling chinook salmon and steelhead, and one ESU of hatchery-reared sockeye salmon were tracked and forecasted to Lower Granite Dam. Eight wild ESUs of subyearling and yearling chinook salmon, sockeye salmon and steelhead were tracked to McNary Dam for the first time this year. Wild PIT-tagged ESUs tracked to Lower Granite Dam included yearling spring/summer chinook salmon release-recovery stocks (from Bear Valley Creek, Catherine Creek, Herd Creek, Imnaha River, Johnson Creek, Lostine River, Minam River, South Fork Salmon River, Secesh River, and Valley Creek), PIT-tagged wild runs-at-large of yearling chinook salmon and steelhead, and a PIT-tagged stock of subyearling fall chinook salmon. The stock of hatchery-reared PIT-tagged summer-run sockeye salmon smolts outmigrating to Lower Granite Dam, consisted this year of a new stock of fish from Alturas Lake Creek, Redfish Lake Creek Trap and Sawtooth Trap. The passage-indexed stocks, counted using FPC passage indices, included combined wild- and hatchery-reared runs-at-large of subyearling and yearling chinook, coho, and sockeye salmon, and steelhead migrating to Rock Island and McNary dams, and, new this year, combined wild and hatchery subyearling chinook salmon to John Day Dam. Unusual run-timing and fish passage characteristics were observed in this low-flow, negligible-spill migration year. The period for the middle 80% of fish passage (i.e., progress from the 10th to the 90th percentiles) was unusually short for nine out of ten PIT-tagged yearling spring/summer chinook salmon stocks tracked to Lower Granite Dam. It was the shortest on record for seven of these ten stocks. The nine stocks recording unusually short middle 80% periods also recorded higher-than-average recovery percentages. However the opposite trend was observed for the PIT-tagged wild subyearling chinook salmon and hatchery sockeye salmon stocks whose middle 80% period of passage to Lower Granite Dam was average to above average. Recovery percentages for these two stocks were average, compared to historical recoveries. The performance results of Program RealTime to make accurate predictions of percentiles of fish passage at an index site were mixed this year. The release-recovery stocks of wild PIT-tagged spring/summer chinook salmon tracked to Lower Granite Dam were predicted less accurately than usual, on average, with two exceptions. One of these exceptions was a stock that had its best prediction (first-half, last-half, and season-wide) ever to occur. On average, however, performance was down for predicting these stocks. The RealTime Select composite season-wide MAD was 4.3%, larger than the historical average of 2.1%. Passage percentiles for PIT-tagged runs-at-large of wild Snake River yearling and subyearling chinook salmon and of wild steelhead outmigrating to Lower Granite Dam were predicted very well this year, their second year of inclusion in the project, with season-wide MADs of 3.6%, 4.7%, and 1.8% respectively. These results, too, were mixed with respect to comparison with last year's performance. The yearling chinook stock was predicted somewhat better last year (up from 1.7% last year to 3.6% this year) but the subyearling chinook salmon and steelhead stocks were predicted better this year than last, season-wide. The steelhead stock, in particular, was predicted much better this year than last year, down to 1.8% this year from 4.8% last year. The PIT-tagged runs-at-large of wild salmon and steelhead tracked to McNary Dam in 2001 for the first time, were also well-predicted. In particular, the Snake River stocks were well-predicted, with season-wide MADs of 4.7% for subyearling chinook salmon, 3.3% for year

Burgess, Caitlin; Skalski, John R.

2001-12-01T23:59:59.000Z

139

Thermal vs energy optimization for dvfs-enabled processors in embedded systems  

E-Print Network (OSTI)

Abstract In the past, dynamic voltage and frequency scaling (DVFS) has been widely used for power and energy optimization in embedded system design. As thermal issues become increasingly prominent, we propose design-time thermal optimization techniques for embedded systems. By carefully planning DVFS at design time, our techniques proactively optimize system thermal profile, prevent run-time thermal emergencies, minimize cooling costs, and optimize system performance. To the best of our knowledge, this is the first work addressing embedded system designtime thermal optimization using DVFS. We formulate minimization of application peak temperature in the presence of real-time constraints as a nonlinear programming problem. This provides a powerful framework for system designers to determine a proper thermal solution and provide a lower bound on the minimum temperature achievable by DVFS. Furthermore, we examine the differences between optimal energy solutions and optimal peak temperature solutions. Experimental results indicate that optimizing energy consumption can lead to unnecessarily high temperature. Finally, we propose a thermal-constrained energy optimization procedure to minimize system energy consumption under a constraint on peak temperature. I.

Yongpan Liu; Huazhong Yang; Robert P. Dick; Hui Wang; Li Shang

2007-01-01T23:59:59.000Z

140

Alchemi: A .NET-based Enterprise Grid Computing System  

E-Print Network (OSTI)

Computational grids that couple geographically distributed resources are becoming the de-facto computing platform for solving large-scale problems in science, engineering, and commerce. Software to enable grid computing has been primarily written for Unix-class operating systems, thus severely limiting the ability to effectively utilize the computing resources of the vast majority of Windows-based desktop computers. Addressing Windows-based grid computing is particularly important from the software industry's viewpoint where interest in grids is emerging rapidly. Microsoft's .NET Framework has become near-ubiquitous for implementing commercial distributed systems for Windows-based platforms, positioning it as the ideal platform for grid computing in this context. In this paper we present Alchemi , a .NETbased framework that provides the runtime machinery and programming environment required to construct enterprise/desktop grids and develop grid applications. It allows flexible application composition by supporting an object-oriented application programming model in addition to a file-based job model. Cross-platform support is provided via a web services interface and a flexible execution model supports dedicated and non-dedicated (voluntary) execution by grid nodes.

Akshay Luther; Rajkumar Buyya; Rajiv Ranjan; Srikumar Venugopal

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

A new parallel association rule mining algorithm on distributed shared memory system  

Science Conference Proceedings (OSTI)

Frequent itemset finding is the most time consuming step in analysing large transactional databases. The use of sequential algorithms cannot give analytical ability for such very large databases especially in terms of run-time performance. Therefore, ...

Mohamed H. Marghny; Hosam E. Refaat

2012-01-01T23:59:59.000Z

142

Development of Fast-Time Simulation Techniques to Model Safety Issues in the National Airspace System  

E-Print Network (OSTI)

NASA nm PIREP RAM RFS RTI SJSU SOM UCB Aviation PerformanceHLA interface standards and RTI software. Demonstration ofits Run-Time Interface (RTI) appears to be a very efficient

2002-01-01T23:59:59.000Z

143

Dynamic computation migration in DSM systems  

Science Conference Proceedings (OSTI)

We describe dynamic computation migration, the runtime choice between computation and data migration. Dynamic computation migration is useful for concurrent data structures with unpredictable read/write patterns. We implemented it in MCRL, a multithreaded ... Keywords: computation migration, data migration, replication, coherence

Wilson C. Hsieh; M. Frans Kaashoek; William E. Weihl

1996-11-01T23:59:59.000Z

144

Inline Integration: A new mixed symbolic/numeric approach for solving differential-algebraic equation systems  

E-Print Network (OSTI)

This paper presents a new method for solving di erential{algebraic equation systems using a mixed symbolic and numeric approach. Discretization formulae representing the numerical integration algorithm are symbolically inserted into the di erential{algebraic equation model. The symbolic formulae manipulation algorithm of the model translator treats these additional equations in the same way as it treats the physical equations of the model itself, i.e., it looks at the augmented set of algebraically coupled equations and generates optimized code to be used with the underlying simulation run{time system. For implicit integration methods, a large nonlinear system of equations needs to be solved at every time step. It is shown that the presented uniform treatment of model equations and discretization formulae often leads to a signi cant reduction of the number of iteration variables and therefore to a substantial increase in execution speed. In a large mechatronics system consisting of a six degree{of{freedom robot together with its motors, drive trains, and control systems, this approach led to a speedup factor of more than ten.

Hilding Elmqvist; Martin Otter; Francois E. Cellier

1995-01-01T23:59:59.000Z

145

Vehicle routing for the last mile of power system restoration  

SciTech Connect

This paper studied a novel problem in power system restoration: the Power Restoration Vehicle Routing Problem (PRVRP). The goal of PRVRPs is to decide how coordinate repair crews effectively in order to recover from blackouts as fast as possible after a disaster has occurred. PRVRPs are complex problems that combine vehicle routing and power restoration scheduling problems. The paper proposed a multi-stage optimization algorithm based on the idea of constraint injection that meets the aggressive runtime constraints necessary for disaster recovery. The algorithms were validated on benchmarks produced by the Los Alamos National Laboratory, using the infrastructure of the United States. The disaster scenarios were generated by state-of-the-art hurricane simulation tools similar to those used by the National Hurricane Center. Experimental results show that the constraint-injection algorithms can reduce the blackouts by 50% or more over field practices. Moreover, the results show that the constraint-injection algorithm using large neighborhood search over a blackbox simulator provide competitive quality and scales better than using a MIP solver on the subproblems.

Bent, Russell W [Los Alamos National Laboratory; Coffrin, Carleton [Los Alamos National Laboratory; Van Hentenryck, Pascal [BROWN UNIV.

2010-11-23T23:59:59.000Z

146

Some new applications of supercapacitors in power electronic systems  

E-Print Network (OSTI)

This thesis explores some new applications in power electronics for supercapacitors. This involves the design and development of dc-dc converters to interface the supercapacitor banks with the rest of the power electronic system. Two applications for supercapacitors are proposed and analyzed. The first application is aimed at high power applications such as motor drives. The proposed approach compensates the effect of voltage sags in the dc link of typical adjustable speed drives, thus reducing speed fluctuations in the motor and eliminating the possibility of nuisance tripping on the drive control board. The second approach presented in this thesis explores the use of supercapacitors to extend run-time for mobile devices such as laptop computers and hand held devices. Three possible approaches are explored: a) Supercapacitors connected directly across the battery; b) Battery-inductor-supercapacitor connection; and c) Supercapacitor, and battery connected via a DC-DC converter. Analytical models, simulation and experimental results on a typical laptop computer are presented.

Palma Fanjul, Leonardo Manuel

2003-08-01T23:59:59.000Z

147

Bibliographies AI  

Science Conference Proceedings (OSTI)

... Also, limited system run-time during mild weather was identified as a limitation of ... the buoyancy effect, the school was equipped with a solar chimney ...

148

Enhancing I/O Throughput via Efficient Routing and Placement for Large-scale Parallel File Systems  

Science Conference Proceedings (OSTI)

As storage systems get larger to meet the demands of petascale systems, careful planning must be applied to avoid congestion points and extract the maximum performance. In addition, the large data sets generated by such systems makes it desirable for all compute resources to have common access to this data without needing to copy it to each machine. This paper describes a method of placing I/O close to the storage nodes to minimize contention on Cray s SeaStar2+ network, and extends it to a routed Lustre configuration to gain the same benefits when running against a center-wide file system. Our experiments using half of the resources of Spider the center-wide file system at the Oak Ridge Leadership Computing Facility show that I/O write bandwidth can be improved by up to 45% (from 71.9 to 104 GB/s) for a direct-attached configuration and by 137% (47.6 GB/s to 115 GB/s) for a routed configuration. We demonstrated up to 20.7% reduction in run-time for production scientific applications. With the full Spider system, we demonstrated over 240 GB/s of aggregate bandwidth using our techniques.

Dillow, David A [ORNL; Shipman, Galen M [ORNL; Oral, H Sarp [ORNL; Zhang, Zhe [ORNL; Kim, Youngjae [ORNL

2011-01-01T23:59:59.000Z

149

Concurrency in a System for Symbolic and Algebraic Computations  

E-Print Network (OSTI)

As miniaturization of computer components is approaching the limits of physics, researchers in computer architecture are looking for less conventional means to perpetuate Moore's law. Recent trends in hardware ve been adding more cores. Consequently multicore machines are now commodity. To help programmers benefit from Moore's dividend, researchers in programming techniques, tools and languages have been exploring several venues. A dominant theme is the design and implementation of parallel algorithms. Several programming models have been proposed, but none at the moment seem to be substantially better than others. While general parallel programming is a distinctively challenging task, we believe that scientific computation algorithms display algebraic structures, thanks to the rich mathematical objects they manipulate. The present work aims at exploring the extent to which algebraic properties displayed by computer algebra algorithms may be automatically exploited to take advantage of parallelism in the OpenAxiom scientific computation platform. We designed a runtime system that exploits the ubiquitous parallelism of modern CPUs; the system is also scaled to many-system clusters. By taking advantage of the existing InputForm domain in OpenAxiom and connecting of the standard input channel to sockets, we were able to minimize potentially hazardous modifications to the OpenAxiom source while still implementing desired functionality. Additionally, we designed and implemented FFI extensions to the OpenAxiom core to take advantage of SIMD instructions, particularly SSE2 (SIMD Streaming Extensions). The extension allowed us to nearly double the speed of common operations such as multiplying arrays of doubles. We also defined and implemented a foreign function interface for the OpenAxiom system. All of these additions were benchmarked using Berlekamp's algorithm for factorization of polynomials over integers. While much still remains to be done in parallelizing the algebra to work over many calculation nodes, mathematical annotations remain viable in unloading the burden of parallelizing code from the programmer by substituting a simpler activity.

Mai, Stefan

2009-06-09T23:59:59.000Z

150

A Structural View of the Cedar Programming Environment  

E-Print Network (OSTI)

activities include experimental pro- gramming and the development of prototype software systems for a high the novel system features of Cedar, including automatic storage management of dynamically allocated typed values, a run-time type system that provides run-time access to Cedar data type definitions and allows

van der Hoek, André

151

Algorithmic support for commodity-based parallel computing systems.  

SciTech Connect

The Computational Plant or Cplant is a commodity-based distributed-memory supercomputer under development at Sandia National Laboratories. Distributed-memory supercomputers run many parallel programs simultaneously. Users submit their programs to a job queue. When a job is scheduled to run, it is assigned to a set of available processors. Job runtime depends not only on the number of processors but also on the particular set of processors assigned to it. Jobs should be allocated to localized clusters of processors to minimize communication costs and to avoid bandwidth contention caused by overlapping jobs. This report introduces new allocation strategies and performance metrics based on space-filling curves and one dimensional allocation strategies. These algorithms are general and simple. Preliminary simulations and Cplant experiments indicate that both space-filling curves and one-dimensional packing improve processor locality compared to the sorted free list strategy previously used on Cplant. These new allocation strategies are implemented in Release 2.0 of the Cplant System Software that was phased into the Cplant systems at Sandia by May 2002. Experimental results then demonstrated that the average number of communication hops between the processors allocated to a job strongly correlates with the job's completion time. This report also gives processor-allocation algorithms for minimizing the average number of communication hops between the assigned processors for grid architectures. The associated clustering problem is as follows: Given n points in {Re}d, find k points that minimize their average pairwise L{sub 1} distance. Exact and approximate algorithms are given for these optimization problems. One of these algorithms has been implemented on Cplant and will be included in Cplant System Software, Version 2.1, to be released. In more preliminary work, we suggest improvements to the scheduler separate from the allocator.

Leung, Vitus Joseph; Bender, Michael A. (State University of New York, Stony Brook, NY); Bunde, David P. (University of Illinois, Urbna, IL); Phillips, Cynthia Ann

2003-10-01T23:59:59.000Z

152

Award ER25750: Coordinated Infrastructure for Fault Tolerance Systems Indiana University Final Report  

SciTech Connect

The main purpose of the Coordinated Infrastructure for Fault Tolerance in Systems initiative has been to conduct research with a goal of providing end-to-end fault tolerance on a systemwide basis for applications and other system software. While fault tolerance has been an integral part of most high-performance computing (HPC) system software developed over the past decade, it has been treated mostly as a collection of isolated stovepipes. Visibility and response to faults has typically been limited to the particular hardware and software subsystems in which they are initially observed. Little fault information is shared across subsystems, allowing little flexibility or control on a system-wide basis, making it practically impossible to provide cohesive end-to-end fault tolerance in support of scientific applications. As an example, consider faults such as communication link failures that can be seen by a network library but are not directly visible to the job scheduler, or consider faults related to node failures that can be detected by system monitoring software but are not inherently visible to the resource manager. If information about such faults could be shared by the network libraries or monitoring software, then other system software, such as a resource manager or job scheduler, could ensure that failed nodes or failed network links were excluded from further job allocations and that further diagnosis could be performed. As a founding member and one of the lead developers of the Open MPI project, our efforts over the course of this project have been focused on making Open MPI more robust to failures by supporting various fault tolerance techniques, and using fault information exchange and coordination between MPI and the HPC system software stack?from the application, numeric libraries, and programming language runtime to other common system components such as jobs schedulers, resource managers, and monitoring tools.

Lumsdaine, Andrew

2013-03-08T23:59:59.000Z

153

PMPS(3): a performance model of parallel systems  

Science Conference Proceedings (OSTI)

In this paper, an open performance model framework PMPS(n) and a realization of this framework PMPS(3), including memory, I/O and network, are presented and used to predict runtime of NPB benchmarks on P4 cluster. The experimental results demonstrates ... Keywords: I/O, convolution methods, parallel, performance model

Chen Yong-ran; Qi Xing-yun; Qian Yue; Dou Wen-hua

2006-09-01T23:59:59.000Z

154

How to efficiently implement dynamic circuit specialization systems  

Science Conference Proceedings (OSTI)

Dynamic circuit specialization (DCS) is a technique used to implement FPGA applications where some of the input data, called parameters, change slowly compared to other inputs. Each time the parameter values change, the FPGA is reconfigured by a configuration ... Keywords: Boolean Network evaluation, FPGA, dynamic circuit specialization, runtime reconfiguration

Fatma Abouelella; Tom Davidson; Wim Meeus; Karel Bruneel; Dirk Stroobandt

2013-07-01T23:59:59.000Z

155

Performance evaluation of a dynamic load-balancing library for cluster computing  

Science Conference Proceedings (OSTI)

The performance of scientific applications in heterogeneous environments has been improved with the research advances in dynamic scheduling at application and runtime system levels. This paper presents the performance evaluation of a library as a result ... Keywords: cluster computing, data migration, dynamic load balancing library, dynamic scheduling, loop scheduling, overhead analysis, parallel computing, parallel runtime system, performance evaluation, resource management, task migration

Ioana Banicescu; Ricolindo L. Carino; Jaderick P. Pabico; Mahadevan Balasubramaniam

2005-05-01T23:59:59.000Z

156

Efficient power modeling and software thermal sensing for runtime temperature monitoring  

Science Conference Proceedings (OSTI)

The evolution of microprocessors has been hindered by increasing power consumption and heat dissipation on die. An excessive amount of heat creates reliability problems, reduces the lifetime of a processor, and elevates the cost of cooling and packaging ... Keywords: Power, thermal

Wei Wu; Lingling Jin; Jun Yang; Pu Liu; Sheldon X.-D. Tan

2007-08-01T23:59:59.000Z

157

Communication library for run-time visualization of distributed, asynchronous data  

SciTech Connect

In this paper we present a method for collecting and visualizing data generated by a parallel computational simulation during run time. Data distributed across multiple processes is sent across parallel communication lines to a remote workstation, which sorts and queues the data for visualization. We have implemented our method in a set of tools called PORTAL (for Parallel aRchitecture data-TrAnsfer Library). The tools comprise generic routines for sending data from a parallel program (callable from either C or FORTRAN), a semi-parallel communication scheme currently built upon Unix Sockets, and a real-time connection to the scientific visualization program AVS. Our method is most valuable when used to examine large datasets that can be efficiently generated and do not need to be stored on disk. The PORTAL source libraries, detailed documentation, and a working example can be obtained by anonymous ftp from info.mcs.anl.gov from the file portal.tar.Z from the directory pub/portal.

Rowlan, J. [Argonne National Lab., IL (United States); Wightman, B.T. [Wisconsin Univ., Oshkosh, WI (United States)

1994-04-01T23:59:59.000Z

158

Modelling and decentralised runtime control of self-stabilising power micro grids  

Science Conference Proceedings (OSTI)

Electric power production infrastructures around the globe are shifting from centralised, controllable production to decentralised structures based on distributed microgeneration. As the share of renewable energy sources such as wind and solar power ...

Arnd Hartmanns; Holger Hermanns

2012-10-01T23:59:59.000Z

159

Centralized Run-Time Resource Management in a Network-on-Chip Containing Reconfigurable Hardware Tiles  

E-Print Network (OSTI)

Science University British Columbia Vancouver, V6T Canada {swyang,mrg}@cs.ubc.ca Abstract. This paper is abstract. Hopefully, won't abstract time submit Introduction Fig. Synchronous Pipeline Stage Surfing Figure 1 shows typical synchronous pipeline stage. For proper operation, clock period must longer than

Paris-Sud XI, Université de

160

A collaborative framework for evaluation of run-time changes in enterprise web services  

Science Conference Proceedings (OSTI)

Increasing market demand and technology in today's world has made change management an inevitable one. To remain competitive, organizations must be able to respond to change in a timely and cost effective manner. Although there are many change management ... Keywords: dependency analysis, enterprise business scenario, similarity measure, web services change management

M. Thirumaran; P. Dhavachelvan; G. Naga Venkata Kiran

2012-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

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.

162

Data parallel execution challenges and runtime performance of agent simulations on GPUs  

Science Conference Proceedings (OSTI)

Programmable graphics processing units (GPUs) have emerged as excellent computational platforms for certain general-purpose applications. The data parallel execution capabilities of GPUs specifically point to the potential for effective use in simulations ... Keywords: agent-based simulation, emergent behavior, graphical processing units, large-scale simulation, parallel simulation

Kalyan S. Perumalla; Brandon G. Aaby

2008-04-01T23:59:59.000Z

163

JavaCloak - Considering the Limitations of Proxies for Facilitating Java Runtime Specialisation.  

E-Print Network (OSTI)

Renaud,K.V. Annual Conference of the South African Institute of Computer Scientists and Information Technologists. SAICSIT'2001. Pretoria, South Africa. 25-28 September 2001. University of South Africa

Renaud, K.V.

164

V-172: ISC BIND RUNTIME_CHECK Error Lets Remote Users Deny Service...  

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

Addthis Related Articles U-038: BIND 9 Resolver crashes after logging an error in query.c U-039: ISC Update: BIND 9 Resolver crashes after logging an error in query.c T-662:...

165

The benefits and costs of DyC's run-time optimizations  

Science Conference Proceedings (OSTI)

DyC selectively dynamically compiles programs during their execution, utilizing the run-time-computed values of variables and data structures to apply optimizations that are based on partial evaluation. The dynamic optimizations are preplanned at static ... Keywords: dynamic compilation, specialization

Brian Grant; Markus Mock; Matthai Philipose; Craig Chambers; Susan J. Eggers

2000-09-01T23:59:59.000Z

166

Evaluation of the 1998 Predictions of the Run-Timing of Wild Migrant Yearling Chinook  

E-Print Network (OSTI)

.S. Army Corps of Engineers, electrical power demand forecasts, and other criteria. The substantial electrical load to be met by all generating projects in the region, the Snake projects could be operated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.1: Flow and Spill Forecasts

Washington at Seattle, University of

167

Rhizoma: a runtime for self-deploying, self-managing overlays  

Science Conference Proceedings (OSTI)

The trend towards cloud and utility computing infrastructures raises challenges not only for application development, but also for management: diverse resources, changing resource availability, and differing application requirements create a complex ...

Qin Yin; Adrian Schpbach; Justin Cappos; Andrew Baumann; Timothy Roscoe

2009-11-01T23:59:59.000Z

168

Component Assemblies and Component Runtimes Yu David Liu Ran Rinat Scott F. Smith  

E-Print Network (OSTI)

the cable analogy, cells are also designed to allow "hot-plugging", cables that may be connected invocation between connected cells, and full distributed functionality, including formation of remote cell different ways of handling parameters de- pending on inter-cell communication and intra-cell commu- nication

Smith, Scott F.

169

Fuel Cell Technologies Office: Early Market Applications for...  

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

fuel cells can offer significant cost savings over both battery-generator systems and battery-only systems when shorter runtime capabilities of up to 72 hours are sufficient...

170

Optimizing large-scale Semi-Nave datalog evaluation in hadoop  

Science Conference Proceedings (OSTI)

We explore the design and implementation of a scalable Datalog system using Hadoop as the underlying runtime system. Observing that several successful projects provide a relational algebra-based programming interface to Hadoop, we argue that a natural ...

Marianne Shaw; Paraschos Koutris; Bill Howe; Dan Suciu

2012-09-01T23:59:59.000Z

171

ZeptoOS  

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

Overview ZeptoOS logo ZeptoOS is a research project studying operating systems for petascale architectures with 10,000 to 1 million CPUs. Operating systems and run-time software...

172

IRIS & IDEA Software  

Science Conference Proceedings (OSTI)

IRIS & IDEA Software. IRIS - Immersive Runtime Interpreted Scenegraph. IRIS, the Interpreted Runtime Immersive Scenegraph ...

2011-10-05T23:59:59.000Z

173

Alchemi: A .NET-based Enterprise Grid Computing System Akshay Luther, Rajkumar Buyya, Rajiv Ranjan, and Srikumar Venugopal  

E-Print Network (OSTI)

. In this paper we present Alchemi1 , a .NET- based framework that provides the runtime machinery and programming application composition by supporting an object-oriented application programming model in addition to a file execution (via .NET Remoting [4] and web services [22]), multithreading, security, asynchronous programming

Buyya, Rajkumar

174

NCAR/TN468+STR NCAR TECHNICAL NOTE  

E-Print Network (OSTI)

System ARW Solver · Equations: Fully compressible, Euler nonhydrostatic with a run-time hydrostatic the compressible, nonhydrostatic Euler equations. The equations are cast in flux form using variables that have

Zhang, Yan

175

Dynamic Memory Optimization using Pool Allocation and Prefetching  

E-Print Network (OSTI)

Heap memory allocation plays an important role in modern applications. Conventional heap allocators, however, generally ignore the underlying memory hierarchy of the system, favoring instead a low runtime overhead and fast ...

Zhao, Qin

176

High Performance Adaptive Distributed Scheduling Algorithm  

Science Conference Proceedings (OSTI)

Exascale computing requires complex runtime systems that need to consider affinity, load balancing and low time and message complexity for scheduling massive scale parallel computations. Simultaneous consideration of these objectives makes online distributed ... Keywords: Distributed Scheduling, Adaptive Scheduling, Performance Analysis

Ankur Narang, Abhinav Srivastava, R. K. Shyamasundar

2013-05-01T23:59:59.000Z

177

A performance model for fine-grain accesses in UPC  

Science Conference Proceedings (OSTI)

UPC's implicit communication and fine-grain programming style make application performance modeling a challenging task. The correspondence between remote references and communication events depends on the internals of the compiler and runtime system. ...

Zhang Zhang; Steven R. Seidel

2006-04-01T23:59:59.000Z

178

Highly scalable distributed dataflow analysis  

Science Conference Proceedings (OSTI)

Dynamic dataflow analyses find software errors by tracking meta-values associated with a program's runtime data. Despite their benefits, the orders-of-magnitude slowdowns that accompany these systems limit their use to the development stage; few users ...

Joseph L. Greathouse; Chelsea LeBlanc; Todd Austin; Valeria Bertacco

2011-04-01T23:59:59.000Z

179

Understanding POWER multiprocessors  

Science Conference Proceedings (OSTI)

Exploiting today's multiprocessors requires high-performance and correct concurrent systems code (optimising compilers, language runtimes, OS kernels, etc.), which in turn requires a good understanding of the observable processor behaviour that can be ... Keywords: relaxed memory models, semantics

Susmit Sarkar; Peter Sewell; Jade Alglave; Luc Maranget; Derek Williams

2011-06-01T23:59:59.000Z

180

Specification-enhanced execution  

E-Print Network (OSTI)

Our goal is to provide a framework that allows the programmer to easily shift responsibility for certain aspects of the program execution to the runtime system. We present specification- enhanced execution, a programming ...

Yang, Jean, S.M. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Proceedings of the ACM/IFIP/USENIX 2007 International Conference on Middleware  

Science Conference Proceedings (OSTI)

Nowadays, middleware technologies are the main infrastructure to support the development and execution of distributed systems, providing design abstractions, programming models and tools, frameworks, protocols, deployment mechanisms, and runtime services. ...

Nalini Venkatasubramanian; Roy H. Campbell; Renato Cerqueira

2007-11-01T23:59:59.000Z

182

Logic-based Conflict Detection for Distributed Policies  

Science Conference Proceedings (OSTI)

Policies are used to describe rules that are employed to modify (often distributed) system behaviour at runtime. Typically policies are created by many different people and there are many policies leading naturally to inconsistency between the policies, ...

Carlo Montangero; Stephan Reiff-Marganiec; Laura Semini

2008-12-01T23:59:59.000Z

183

Logic-based Conflict Detection for Distributed Policies  

Science Conference Proceedings (OSTI)

Policies are used to describe rules that are employed to modify (often distributed) system behaviour at runtime. Typically policies are created by many different people and there are many policies leading naturally to inconsistency between the policies, ...

Carlo Montangero; Stephan Reiff-Marganiec; Laura Semini

2009-01-01T23:59:59.000Z

184

RXIO: Design and implementation of high performance RDMA-capable GridFTP  

Science Conference Proceedings (OSTI)

For its low-latency, high bandwidth, and low CPU utilization, Remote Direct Memory Access (RDMA) has established itself as an effective data movement technology in many networking environments. However, the transport protocols of grid run-time systems, ...

Yuan Tian; Weikuan Yu; Jeffrey S. Vetter

2012-05-01T23:59:59.000Z

185

A scalability benchmark suite for Erlang/OTP  

Science Conference Proceedings (OSTI)

Programming language implementers rely heavily on benchmarking for measuring and understanding performance of algorithms, architectural designs, and trade-offs between alternative implementations of compilers, runtime systems, and virtual machine components. ... Keywords: benchmarking, erlang, multicore, scalability

Stavros Aronis; Nikolaos Papaspyrou; Katerina Roukounaki; Konstantinos Sagonas; Yiannis Tsiouris; Ioannis E. Venetis

2012-09-01T23:59:59.000Z

186

NETL: Gasification Systems - Feed Systems  

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

Feed Systems Gasification Systems Feed Systems Research on commercial gasifier feed systems is occurring in two primary areas of fuel (i.e. coal, biomass, etc.) feed and advanced...

187

A Partitioning Approach for Parallel Simulation of AC-Radial Shipboard Power Systems  

E-Print Network (OSTI)

An approach to parallelize the simulation of AC-Radial Shipboard Power Systems (SPSs) using multicore computers is presented. Time domain simulations of SPSs are notoriously slow, due principally to the number of components, and the time-variance of the component models. A common approach to reduce the simulation run-time of power systems is to formulate the electrical network equations using modified nodal analysis, use Bergeron's travelling-wave transmission line model to create subsystems, and to parallelize the simulation using a distributed computer. In this work, an SPS was formulated using loop analysis, defining the subsystems using a diakoptics-based approach, and the simulation parallelized using a multicore computer. A program was developed in C# to conduct multithreaded parallel-sequential simulations of an SPS. The program first represents an SPS as a graph, and then partitions the graph. Each graph partition represents a SPS subsystem and is computationally balanced using iterative refinement heuristics. Once balanced subsystems are obtained, each SPS subsystem's electrical network equations are formulated using loop analysis. Each SPS subsystem is solved using a unique thread, and each thread is manually assigned to a core of a multicore computer. To validate the partitioning approach, performance metrics were created to assess the speed gain and accuracy of the partitioned SPS simulations. The simulation parameters swept for the performance metrics were the number of partitions, the number of cores used, and the time step increment. The results of the performance metrics showed adequate speed gains with negligible error. An increasing simulation speed gain was observed when the number of partitions and cores were augmented, obtaining maximum speed gains of <30x when using a quadcore computer. Results show that the speed gain is more sensitive to the number partitions than is to the number of cores. While multicore computers are suitable for parallel-sequential SPS simulations, increasing the number of cores does not contribute to the gain in speed as much as does partitioning. The simulation error increased with the simulation time step but did not influence the partitioned simulation results. The number of operations caused by protective devices was used to determine whether the simulation error introduced by partitioning SPS simulations produced a inconsistent system behavior. It is shown, for the time step sizes uses, that protective devices did not operate inadvertently, which indicates that the errors did not alter RMS measurement and, hence, were non-influential.

Uriarte, Fabian Marcel

2010-05-01T23:59:59.000Z

188

Photovoltaic system in system LABI  

Science Conference Proceedings (OSTI)

There is prepared a new model marked as DE10 to extens the system LABI. It is a photovoltaic system. Utilizing of model is into the field of university studying and as a pilot test system for all extern experts. A special parts of model are measurement ... Keywords: automation, measurement, photovoltaic system, sun energy

Hruska Frantisek

2010-07-01T23:59:59.000Z

189

File Systems  

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

File Systems File Systems File Systems For a general description of the different file systems available on PDSF please see Eliza File Systems and Other File Systems. Below is a summary of how STAR uses the various systems: /common The STAR software is installed on /common. For 32sl44 it is under /common/star/star44 and for sl53 it is under /common/star/star53. In both cases the software consists primarily of a STAR-specific ROOT installation on which releases of the STAR libraries are built as shown on the Local STAR Libraries page. /eliza3, /eliza6, /eliza9, /eliza14, /eliza15, /eliza17 STAR has space on 6 elizas as shown in the table below. File System star space (TB) use eliza3 39 production eliza6 9 production eliza9 39 production eliza14 34 production, user space under /eliza14/star/pwg

190

Evaluation of the 1994 Predictions of the Run-Timing of Wild Migrant Yearling Chinook in the Snake River Basin.  

DOE Green Energy (OSTI)

Since 1988, wild salmon have been PIT-tagged under programs conducted by the National Marine Fisheries Service, Idaho Department of Fish and Game, Oregon Department of Fish and Game and the U.S. Fish and Wildlife Service. The detection of tagged individuals at Lower Granite Dam provides a measure, of the temporal and spatial distribution of the wild populations. PIT Forecaster was developed to take advantage of this historical data to predict the proportion of a particular population which had arrived at the index site in real-time and to forecast elapsed time to some future percentile in a migration. This report evaluates the performance of the Least Squares (LS) method and the Synchronized historical pattern matching (SYNC) method used in the PIT Forecaster and two other possible methods of prediction reminiscent of methods recommended by the Fish Passage Center (FPC). Alternative No. 1 bases predictions on the historical proportion of PIT-Tags recovered in a specific year and Alternative No. 2 uses the historical cumulative distribution of smolt predicted of a previous season. Over the entire 1994 season, the LS method had the best prediction performance for both aggregate and individual streams. However, for the first half of the season, Alternative No. 1 was clearly a better predictor. This performance deteriorated for the last half of the season, and the LS method improved prediction for aggregate streams and for the individual streams. The algorithms used by PIT Forecaster provide a better prediction as the season progresses. For the first half of the season, Alternative No. 1 did very well for both index years selected. For the 1995 season, Alternative No. 1 will be combined with the LS method to create an improved predictor.

Townsend, Richard L.; Westhagen, P.; Yasuda, D.; Skalski, J.R.

1995-02-01T23:59:59.000Z

191

Runtime function instrumentation with EZTrace Charles Aulagnon1, Damien Martin-Guillerez2, Francois Rue2, and  

E-Print Network (OSTI)

Action Intensity savings Savings at electricity rate $0.07/kWh $0.10/kWh $0.13/kWh Vampire appliances Unplug all appliances not in use (assume 20W of vampire appliances) 0.48 kWh per day $0.034 $0.048 $0 hot (50°C) to cold wash using high efficiency washer (86 litres per load)iv 2.25 kWh per load $0.16 $0

192

System Effectiveness  

SciTech Connect

An effective risk assessment system is needed to address the threat posed by an active or passive insider who, acting alone or in collusion, could attempt diversion or theft of nuclear material. It is critical that a nuclear facility conduct a thorough self-assessment of the material protection, control, and accountability (MPC&A) system to evaluate system effectiveness. Self-assessment involves vulnerability analysis and performance testing of the MPC&A system. The process should lead to confirmation that mitigating features of the system effectively minimize the threat, or it could lead to the conclusion that system improvements or upgrades are necessary to achieve acceptable protection against the threat. Analysis of the MPC&A system is necessary to understand the limits and vulnerabilities of the system to internal threats. Self-assessment helps the facility be prepared to respond to internal threats and reduce the risk of theft or diversion of nuclear material. MSET is a self-assessment or inspection tool utilizing probabilistic risk assessment (PRA) methodology to calculate the system effectiveness of a nuclear facility's MPC&A system. MSET analyzes the effectiveness of an MPC&A system based on defined performance metrics for MPC&A functions based on U.S. and international best practices and regulations. A facility's MC&A system can be evaluated at a point in time and reevaluated after upgrades are implemented or after other system changes occur. The total system or specific subareas within the system can be evaluated. Areas of potential performance improvement or system upgrade can be assessed to determine where the most beneficial and cost-effective improvements should be made. Analyses of risk importance factors show that sustainability is essential for optimal performance. The analyses reveal where performance degradation has the greatest detrimental impact on total system risk and where performance improvements have the greatest reduction in system risk. The risk importance factors show the amount of risk reduction achievable with potential upgrades and the amount of risk reduction actually achieved after upgrades are completed. Applying the risk assessment tool gives support to budget prioritization by showing where budget support levels must be sustained for MC&A functions most important to risk. Results of the risk assessment are also useful in supporting funding justifications for system improvements that significantly reduce system risk.

Powell, Danny H [ORNL; Elwood Jr, Robert H [ORNL

2011-01-01T23:59:59.000Z

193

Gasification Systems Projects & Performers  

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

Gasification Systems Gasification Systems Projects & Performers Gasification Systems - Key Technologies Feed Systems Gasifier Optimization and Plant Supporting Systems Syngas...

194

Advanced Systems  

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

Advanced Systems: Advanced Systems: high Performance fenestration systems Research areas: Research activities to improve the performance of windows and other fenestration products must address window systems issues as well as Glazing Materials research. LBNL activities in the area of Advanced Systems include research at both the product level and the building envelope and building systems levels. Highly insulating windows - using non structural center layers Lower cost solutions to more insulating three layer glazing systems, with the potential to turn windows in U.S. heating dominated residential applications into net-energy gainers. Highly Insulating Window Frames In collaboration with the Norwegian University of Science and Technology, we are researching the potentials for highly insulating window frames. Our initial work examines European frames with reported U-factors under 0.15 Btu/hr-ft2-F. Future research aims to analyze these designs, verify these performance levels and ensure that procedures used to calculate frame performance are accurate.

195

AEP Systems  

Science Conference Proceedings (OSTI)

... Avoid costs of retrofitting systems to support secure access Produced by the Yankee Group http://www.yankeegroup.com Page 25. ...

2007-09-25T23:59:59.000Z

196

NETL: Gasification Systems  

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

Gasification Systems Coal and Power Systems Gasification Systems Gasifier Optimization & Plant Supporting Systems Feed Systems Feed Systems Gasifier Optimization & Plant Supporting...

197

Power system  

DOE Patents (OSTI)

A power system includes a prime mover, a transmission, and a fluid coupler having a selectively engageable lockup clutch. The fluid coupler may be drivingly connected between the prime mover and the transmission. Additionally, the power system may include a motor/generator drivingly connected to at least one of the prime mover and the transmission. The power-system may also include power-system controls configured to execute a control method. The control method may include selecting one of a plurality of modes of operation of the power system. Additionally, the control method may include controlling the operating state of the lockup clutch dependent upon the mode of operation selected. The control method may also include controlling the operating state of the motor/generator dependent upon the mode of operation selected.

Hickam, Christopher Dale (Glasford, IL)

2008-03-18T23:59:59.000Z

198

Gasification Systems  

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

GASIFICATION SYSTEMS U.S. DEPARTMENT OF ENERGY TECHNOLOGY PROGRAM PLAN PREFACE ii DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United...

199

Photovoltaic Systems  

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

A photovoltaic (PV), or solar electric system, is made up of several photovoltaic solar cells. An individual PV cell is usually small, typically producing about 1 or 2 watts of power. To boost the...

200

Type systems  

Science Conference Proceedings (OSTI)

The study of type systems has emerged as one of the most active areas of research in programming languages, with applications in software engineering, language design, high-performance compiler implementation, and security. This chapter discusses the ...

Benjamin C. Pierce

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Battery system  

DOE Patents (OSTI)

A battery module includes a plurality of battery cells and a system configured for passing a fluid past at least a portion of the plurality of battery cells in a parallel manner.

Dougherty, Thomas J; Wood, Steven J; Trester, Dale B; Andrew, Michael G

2013-08-27T23:59:59.000Z

202

Systems Studies  

DOE Green Energy (OSTI)

The Systems Studies Activity had two objectives: (1) to investigate nontechnical barriers to the deployment of biomass production and supply systems and (2) to enhance and extend existing systems models of bioenergy supply and use. For the first objective, the Activity focused on existing bioenergy markets. Four projects were undertaken: a comparative analysis of bioenergy in Sweden and Austria; a one-day workshop on nontechnical barriers jointly supported by the Production Systems Activity; the development and testing of a framework for analyzing barriers and drivers to bioenergy markets; and surveys of wood pellet users in Sweden, Austria and the US. For the second objective, two projects were undertaken. First, the Activity worked with the Integrated BioEnergy Systems (TBS) Activity of TEA Bioenergy Task XIII to enhance the BioEnergy Assessment Model (BEAM). This model is documented in the final report of the IBS Activity. The Systems Studies Activity contributed to enhancing the feedstock portion of the model by developing a coherent set of willow, poplar, and switchgrass production modules relevant to both the US and the UK. The Activity also developed a pretreatment module for switchgrass. Second, the Activity sponsored a three-day workshop on modeling bioenergy systems with the objectives of providing an overview of the types of models used to evaluate bioenergy and promoting communication among bioenergy modelers. There were nine guest speakers addressing different types of models used to evaluate different aspects of bioenergy, ranging from technoeconomic models based on the ASPEN software to linear programming models to develop feedstock supply curves for the US. The papers from this workshop have been submitted to Biomass and Bioenergy and are under editorial review.

Graham, R.L.

1998-03-17T23:59:59.000Z

203

NETL: Gasification - Systems Analyses  

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

System Analyses Gasification Systems Systems Analyses Go to the NETL Gasification Systems Program's Systems and Industry Analyses Studies Technology & CostPerformance Studies NETL...

204

Lighting Systems  

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

Purple LED lamp Purple LED lamp Lighting Systems Lighting research is aimed at improving the energy efficiency of lighting systems in buildings and homes across the nation. The goal is to reduce lighting energy consumption by 50% over twenty years by improving the efficiency of light sources, and controlling and delivering illumination so that it is available, where and when needed, and at the required intensity. Research falls into four main areas: Sources and Ballasts, Light Distribution Systems, Controls and Communications, and Human Factors. Contacts Francis Rubinstein FMRubinstein@lbl.gov (510) 486-4096 Links Lighting Research Group Batteries and Fuel Cells Buildings Energy Efficiency Applications Commercial Buildings Cool Roofs and Heat Islands Demand Response Energy Efficiency Program and Market Trends

205

Natural System  

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

Natural System Natural System Evaluation and Tool Development - FY11 Progress Report Prepared for U.S. Department of Energy Used Fuel Disposition Program Yifeng Wang (SNL) Michael Simpson (INL) Scott Painter (LANL) Hui-Hai Liu (LBNL) Annie B. Kersting (LLNL) July 15, 2011 FCRD-USED-2011-000223 UFD Natural System Evaluation - FY11 Year-End Report July 15, 2011 2 DISCLAIMER This information was prepared as an account of work sponsored by an agency of the U.S. Government. Neither the U.S. Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness, of any information, apparatus, product, or process disclosed, or represents that its use would not infringe

206

ARAC system  

SciTech Connect

In spite of the remarkable safety record of the nuclear industry as a whole, recent public concern over the potential impact of the industry's accelerated growth has prompted ERDA to expand its emergency response procedures. The Atmospheric Release Advisory Capability, ARAC, is a computer communications system designed to enhance the existing emergency response capability of ERDA nuclear facilities. ARAC will add at least two new functions to this capability: centralized, real-time data acquisition and storage, and simulation of the long range atmospheric transport of hazardous materials. To perform these functions, ARAC employs four major sub-systems or facilities: the site facility, the central facility, the global weather center and the regional model. The system has been under development for the past two years at the Lawrence Livermore Laboratory of the University of California. (auth)

Kelly, M.F.; Wyman, R.H.

1975-12-10T23:59:59.000Z

207

BAE Systems  

E-Print Network (OSTI)

Information fusion system designs require sensor and resource management (SM) for effective and efficient data collection, processing, and dissemination. Common Level 4 fusion sensor management (or process refinement) inter-relations with target tracking and identification (Level 1 fusion) have been detailed in the literature. At the ISIF Fusion Conference, a panel discussion was held to examine the contemporary issues and challenges pertaining to the interaction between SM and situation and threat assessment (Level 2/3 fusion). This summarizes the key tenants of the invited panel experts. The common themes were: 1) Addressing the user in system control, 2) Determining a standard set of metrics,

Erik Blasch; John Salerno; Ivan Kadar; Ken Hintz; J. Biermann; Chee Chong; Subrata Das

2007-01-01T23:59:59.000Z

208

Investigating Army systems and Systems of Systems for value robustness  

E-Print Network (OSTI)

This thesis proposes a value robustness approach to architect defense systems and Systems of Systems (SoS). A value robust system or SoS has the ability to provide continued value to stakeholders by performing well to meet ...

Koo, Kevin C. K. (Kevin Cheng Keong)

2010-01-01T23:59:59.000Z

209

NREL: Energy Systems Integration - Energy Systems Integration...  

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

Energy Systems Integration Facility NREL's Energy Systems Integration Facility Garners LEED Platinum View the NREL Press Release. NREL's multistory Energy Systems Integration...

210

Gasification Systems  

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

GASIFICATION SYSTEMS GASIFICATION SYSTEMS U.S. DEPARTMENT OF ENERGY TECHNOLOGY PROGRAM PLAN PREFACE ii DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any

211

Burner systems  

DOE Patents (OSTI)

A burner system particularly useful for downhole deployment includes a tubular combustion chamber unit housed within a tubular coolant jacket assembly. The combustion chamber unit includes a monolithic tube of refractory material whose inner surface defines the combustion zone. A metal reinforcing sleeve surrounds and extends the length of the refractory tube. The inner surface of the coolant jacket assembly and outer surface of the combustion chamber unit are dimensioned so that those surfaces are close to one another in standby condition so that the combustion chamber unit has limited freedom to expand with that expansion being stabilized by the coolant jacket assembly so that compression forces in the refractory tube do not exceed about one-half the safe compressive stress of the material; and the materials of the combustion chamber unit are selected to establish thermal gradient parameters across the combustion chamber unit to maintain the refractory tube in compression during combustion system start up and cool down sequences.

Doherty, Brian J. (Marblehead, MA)

1984-07-10T23:59:59.000Z

212

CONTROL SYSTEM  

DOE Patents (OSTI)

A boiling water type nuclear reactor power system having improved means of control is described. These means include provisions for either heating the coolant-moderator prior to entry into the reactor or shunting the coolantmoderator around the heating means in response to the demand from the heat engine. These provisions are in addition to means for withdrawing the control rods from the reactor. (AEC)

Shannon, R.H.; Williamson, H.E.

1962-10-30T23:59:59.000Z

213

Gasification system  

DOE Patents (OSTI)

A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

Haldipur, Gaurang B. (Hempfield, PA); Anderson, Richard G. (Penn Hills, PA); Cherish, Peter (Bethel Park, PA)

1983-01-01T23:59:59.000Z

214

Gasification system  

DOE Patents (OSTI)

A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

Haldipur, Gaurang B. (Hempfield, PA); Anderson, Richard G. (Penn Hills, PA); Cherish, Peter (Bethel Park, PA)

1985-01-01T23:59:59.000Z

215

Integrated System  

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

Integrated Window System Our research activities in the field of high performance windows have led us to conclude that even by using high performance insulating glass units, low conductivity frames, and warm edge spacers, there are still untapped sources for improving energy efficiency in the design and use of residential windows. While such high performance windows are a dramatic improvement over conventional units, they do not reduce conductive losses through wall framing around the window, offer guarantees against excessive wall/window infiltration nor do they adapt to the daily and seasonal potentials for night insulation and summer shading. To meet this need, we have been working on the design, development, and prototyping of Integrated Window Systems (IWS) since 1993. Integrated Window Systems are a form of panelized construction where the wall panel includes an operable or fixed window sash, recessed night insulation, integral solar shading, and is built in a factory setting in order to minimize thermal short circuits and infiltration at joints. IWSs can be built in modular lengths to facilitate their installation with conventional wood frame stick construction or other forms of panelized construction.

216

Advanced Systems  

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

Optimal gap width for double and triple glazing systems Optimal gap width for double and triple glazing systems Glazing systems in the US are commonly designed with a 1/2 " (12.7 mm) gap. The optimal gap width depends on many factors, such as gas fill (air, argon, krypton), the use of Low-e coatings, the environmental conditions (temperature difference across the window), and the calculation standard used. NFRC standard conditions are -18 C (-0.4 F) outside, and 21 C (69.8 F) inside. The calculation standard used in the US is based on the ISO 15099 standard. European standard conditions are 0 C (32 F) outside, and 20 C (68 F) inside. The calculation standard is based on the EN 673 standard. A number of common glazing configurations both with and without Low-e coatings, and with a variety of gas fills were evaluated using both the North American NFRC standard and the European EN 673 standard. All results were calculated using WINDOW 6.3 from LBNL. All IGU's (Insulated Glazing Units) have a standard height of 1 meter.

217

Braking system  

DOE Patents (OSTI)

A balanced braking system comprising a plurality of braking assemblies located about a member to be braked. Each of the braking assemblies consists of a spring biased piston of a first material fitted into a body of a different material which has a greater contraction upon cooling than the piston material. The piston is provided with a recessed head portion over which is positioned a diaphragm and forming a space therebetween to which is connected a pressurized fluid supply. The diaphragm is controlled by the fluid in the space to contact or withdraw from the member to be braked. A cooling means causes the body within which the piston is fitted to contract more than the piston, producing a tight shrink fit therebetween. The braking system is particularly applicable for selectively braking an arbor of an electron microscope which immobilizes, for example, a vertically adjustable low temperature specimen holder during observation. The system provides balanced braking forces which can be easily removed and re-established with minimal disturbance to arbor location.

Norgren, D.U.

1982-09-23T23:59:59.000Z

218

Components of systems software for parallel systems  

Science Conference Proceedings (OSTI)

Systems software for clusters and other parallel systems affects multiple types of users. End users interact with it to submit and interact with application jobs and to avail themselves of scalable system tools. Systems administrators interact with it ...

Ewing Lusk

2005-09-01T23:59:59.000Z

219

FORMS: a formal reference model for self-adaptation  

Science Conference Proceedings (OSTI)

Self-adaptive software systems are an emerging class of systems that adjust their behavior at runtime to achieve certain functional or quality of service objectives. The construction of such systems has shown to be significantly more challenging than ... Keywords: reference model, self-adaptive systems, z specification

Danny Weyns; Sam Malek; Jesper Andersson

2010-06-01T23:59:59.000Z

220

Advanced Systems  

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

Glazing Systems Glazing Systems Using Non-Structural Center Glazing Layers Windows in the United States use aproximately 2 quads a year in heating energy, approximately one third of all building space heating energy used and the largest single end use attributed to windows. Even if all existing windows were replaced with today’s ENERGY STAR low-e products (U values < 0.35 Btu/hr-ft2-F), windows related heating would still be over 1 Quad. Because heating loads are strongly tied to conductive losses, technologies which lead to lower window U-factors are the key to reducing heating energy. A 0.1 Btu/hr-ft2-F window is targeted as a product, which will meet the requirements of zero-energy homes. Dynamic control of solar gains will further reduce heating needs by allowing winter solar heat gains to be effectively utilized while limiting cooling season gains. Significant cooling load savings can also be expected from lower U-factor windows in certain climates and from dynamic windows in all climates.

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Transfer system  

DOE Patents (OSTI)

A transport system includes a traveling rail (1) which constitutes a transport route and a transport body (3) which is capable of traveling on the traveling rail in the longitudinal direction of the traveling rail. Flexible drive tubes (5) are arranged on the traveling rail in the longitudinal direction of the traveling rail. The transport body includes a traveling wheel (4) which is capable of rolling on the traveling rail and drive wheels (2) which are capable of rolling on the drive tubes upon receiving the rotational drive power generated by pressure of a pressure medium supplied to the drive tubes while depressing the drive tubes. The traveling rail includes a plurality of transport sections and the transport body is capable of receiving a rotational drive force from the drive tubes at every transport sections. If necessary, a transport route changeover switch which changes over the transport route can be provided between the transport sections.

Kurosawa, Kanji (Tokyo, JP); Koga, Bunichiro (Miyagi, JP); Ito, Hideki (Miyagi, JP); Kiriyama, Shigeru (Miyagi, JP); Higuchi, Shizuo (Kanagawa, JP)

2003-05-20T23:59:59.000Z

222

Battery system  

SciTech Connect

This patent describes a battery system for use with a battery powered device. It comprises a battery pack, the battery pack including; battery cells; positive and negative terminals serially coupled to the battery cells, the positive terminal being adapted to deliver output current to a load and receive input current in the direction of charging current; circuit means coupled to the positive and negative terminals and producing at an analog output terminal an analog output signal related to the state of charge of the battery cells; and display means separate from the battery pack and the battery powered device and electrically coupled to the analog output terminal for producing a display indicating the state of charge of the battery cells in accordance with the analog output signal.

Sokira, T.J.

1991-10-15T23:59:59.000Z

223

Environmental Management System  

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

Video Community, Environment Environmental Stewardship Environmental Protection Environmental Management System Environmental Management System An Environmental...

224

Systems Infrastructure (SYS 18)  

E-Print Network (OSTI)

Networked Sensing Systems Infrastructure John Hicks, Karencomponents The Systems Infrastructure team assembles, tests,

Richard Guy; John Hicks; Karen Weeks

2006-01-01T23:59:59.000Z

225

SYS 5: Systems Infrastructure  

E-Print Network (OSTI)

Networked Sensing Systems Infrastructure Kevin Chang, Johnnents The Systems Infrastructure team assembles, tests, and

2006-01-01T23:59:59.000Z

226

Hobbes: composition and virtualization as the foundations of an extreme-scale OS/R  

Science Conference Proceedings (OSTI)

This paper describes our vision for Hobbes, an operating system and runtime (OS/R) framework for extreme-scale systems. The Hobbes design explicitly supports application composition, which is emerging as a key approach for applications to address scalability ... Keywords: application composition, operating system, supercomputing, virtualization

Ron Brightwell, Ron Oldfield, Arthur B. Maccabe, David E. Bernholdt

2013-06-01T23:59:59.000Z

227

Fine-Grained Software Reconfiguration for Wireless Sensor Networks  

E-Print Network (OSTI)

proposed in scenarios whose requirements cannot be fully predicted, or where the system functionality must. In this paper we present FIGARO, a programming model supported by an effi- cient run-time system and distributed changes over time and/or cannot be predicted a priori. For instance, in emergency response [2] systems

Picco, Gian Pietro

228

Optimizing process creation and execution on multi-core architectures  

Science Conference Proceedings (OSTI)

The execution of a single process multiple data (SPMD) application involves running multiple instances of a process with possibly varying arguments. With the widespread adoption of massively multicore processors, there has been a focus towards harnessing ... Keywords: batched system calls, manycore runtime systems, process spawn optimization, scalable intra-node process launch, vector operating system interfaces

Abhishek Kulkarni, Latchesar Ionkov, Michael Lang, Andrew Lumsdaine

2013-05-01T23:59:59.000Z

229

A platform for developing adaptable multicore applications  

Science Conference Proceedings (OSTI)

Computer systems are resource constrained. Application adaptation is a useful way to optimize system resource usage while satisfying the application performance constraints. Previous application adaptation efforts, however, were ad-hoc, time-consuming, ... Keywords: application adaptation, frequency scaling, multicore, parallelization, run-time systems

Dan Fay; Li Shang; Dirk Grunwald

2009-10-01T23:59:59.000Z

230

Green-Energy Transportation  

E-Print Network (OSTI)

Battery technology is the key bottleneck in many cyberphysical systems (CPS). For green-energy CPS transportation applications, such as hybrid electrical vehicles (HEVs) and plug-in HEVs (PHEVs), the battery system design is mostly based on lithium-ion rechargeable electrochemical battery technology, which is bulky, expensive, unreliable, and is the primary roadblock for PHEV adoption and market penetration. For PHEVs, the battery system performance and lifetime reliability are further affected by various user-dependent effects. Battery system modeling and user study are thus essential for battery system design and optimization. This paper presents detailed investigation on battery system modeling and user study for emerging PHEVs. The proposed modeling solution can accurately characterize battery system run-time charge-cycle efficiency, and long-term cycle life. In particular, it models battery system capacity variation and fading due to fabrication and run-time aging effects. An embedded monitoring system is designed and deployed in a number of HEVs and PHEVs, which can monitor users driving behavior and battery usage at real time. Using the proposed modeling and monitoring solutions, we conduct user study to investigate battery system run-time usage, characterize user driving behavior, and study the impact of user driving patterns on battery system run-time charge-cycle efficiency, capacity variation and reliability, and life-cycle economy. This work is the first step in battery system design and optimization for emerging green-energy CPS transportation applications. 1.

Kun Li; Jie Wu; Yifei Jiang; Li Shang; Qin Lv; Robert Dick; Dragan Maksimovic; Kun Li; Jie Wu; Yifei Jiang; Li Shang; Qin Lv; Robert Dick; Dragan Maksimovic

2010-01-01T23:59:59.000Z

231

Architecture-Aware Algorithms for Scalable Performance and Resilience on Heterogeneous Architectures  

SciTech Connect

The goal of the Extreme-scale Algorithms & Software Institute (EASI) is to close the ?application-architecture performance gap? by exploring algorithms and runtime improvements that will enable key science applications to better exploit the architectural features of DOE extreme-scale systems. For the past year of the project, our efforts at the University of Tennessee have concentrated on, and made significant progress related to, the following high-level EASI goals: ? Develop multi-precision and architecture-aware implementations of Krylov, Poisson, Helmholtz solvers, and dense factorizations for heterogeneous multi-core systems; ? Explore new methods of algorithm resilience, and develop new algorithms with these capabilities; ? Develop runtime support for adaptable algorithms that are dealing with resilience, scalability; ? Distribute the new algorithms and runtime support through widely used software packages; ? Establish a strong outreach program to disseminate results, interact with colleagues and train students and junior members of our community.

Dongarra, Jack [University of Tennessee, Knoxville] [University of Tennessee, Knoxville

2013-10-15T23:59:59.000Z

232

NREL: Energy Systems Integration - Energy Systems Integration...  

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

Energy Systems Integration Facility Newsroom The Energy Systems Integration Facility (ESIF) will be one of the only megawatt-scale test facilities in the United States that...

233

LES SOFTWARE FOR THE DESIGN OF LOW EMISSION COMBUSTION SYSTEMS FOR VISION 21 PLANTS  

DOE Green Energy (OSTI)

In this project, an advanced computational software tool will be developed for the design of low emission combustion systems required for Vision 21 clean energy plants. This computational tool will utilize Large Eddy Simulation (LES) methods to predict the highly transient nature of turbulent combustion. The time-accurate software will capture large scale transient motion, while the small scale motion will be modeled using advanced subgrid turbulence and chemistry closures. This three-year project is composed of: Year 1--model development/implementation, Year 2--software alpha validation, and Year 3--technology transfer of software to industry including beta testing. In this first year of the project, subgrid models for turbulence and combustion are being developed through university research (Suresh Menon-Georgia Tech and J.-Y. Chen- UC Berkeley) and implemented into a leading combustion CFD code, CFD-ACE+. The commercially available CFDACE+ software utilizes unstructured , parallel architecture and 2nd-order spatial and temporal numerics. To date, the localized dynamic turbulence model and reduced chemistry models (up to 19 species) for natural gas, propane, hydrogen, syngas, and methanol have been incorporated. The Linear Eddy Model (LEM) for subgrid combustion-turbulence interaction has been developed and implementation into CFD-ACE+ has started. Ways of reducing run-time for complex stiff reactions is being studied, including the use of in situ tabulation and neural nets. Initial validation cases have been performed. CFDRC has also completed the integration of a 64 PC cluster to get highly scalable computing power needed to perform the LES calculations ({approx} 2 million cells) in several days. During the second year, further testing and validation of the LES software will be performed. Researchers at DOE-NETL are working with CFDRC to provide well-characterized high-pressure test data for model validation purposes. To insure practical, usable software is developed, a consortium of gas turbine and industrial burner manufacturers has been established to guide and direct the software development/validation effort. The consortium members include Siemens- Westinghouse, GE Power Systems, Pratt & Whitney, Rolls-Royce, Honeywell, Solar, Coen, McDermott, Vapor Power, Woodward FST, Parker Hannifin, John Zink, RamGen Power, Virginia Tech, DOE-NETL, Air Force Research Laboratory, DOE-ANL, and NASA GRC. Annual consortium meetings are being held in Huntsville, with the 2nd meeting scheduled for January 31-February 1, 2002. 2 Benefits of the program will include the ability to assess complex combustion challenges such as combustion instability, lean blowout, flashback, emissions and the effect of fuel type on performance. The software will greatly reduce development costs and the time cycle of combustor development. And perhaps the greatest benefit will be that the software will stimulate new, creative ideas to solve the combustion challenges of the Vision 21 plant.

Cannon, Steven M.; Adumitroaie, Virgil; McDaniel, Keith S.; Smith, Clifford E.

2001-11-06T23:59:59.000Z

234

Laser Music System.  

E-Print Network (OSTI)

?? A Laser Music System has been created, that combines a laser and light sensor system with an infrared distance sensing system that detects the (more)

Woodruff, Astra

2012-01-01T23:59:59.000Z

235

NERSC Computational Systems  

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

My NERSC Getting Started Computational Systems Edison Hopper Carver Dirac PDSF Genepool Testbeds Retired Systems Data & File Systems Network Connections Queues and Scheduling Job...

236

Minimal fusion systems.  

E-Print Network (OSTI)

??We define minimal fusion systems in a way that every non-solvable fusion system has a section which is minimal. Minimal fusion systems can also be (more)

Henke, Ellen

2010-01-01T23:59:59.000Z

237

Communication Systems Chair of Communication Systems  

E-Print Network (OSTI)

, porn sites, web services, ... :-)) #12;8 | 28 Communication Systems network insecurity Inner and intra

Schindelhauer, Christian

238

TRANSPORTATION SYSTEMS Transportation systems are the building  

E-Print Network (OSTI)

TRANSPORTATION SYSTEMS Transportation systems are the building blocks of modern society. Efficient mobility improves the quality of life. However, transportation systems by their very nature also affect quality. The transportation systems graduate pro- gram provides in-depth knowledge on the design

Wang, Yuhang

239

Complex System Classification  

E-Print Network (OSTI)

The use of terms such as Engineering Systems, System of systems and others have been coming into greater use over the past decade to denote systems of importance but with implied higher complexity than for the term ...

Magee, Christopher

2004-07-24T23:59:59.000Z

240

An Approach for Detecting Inconsistencies between Behavioral Models of the Software Architecture and the Code  

SciTech Connect

In practice, inconsistencies between architectural documentation and the code might arise due to improper implementation of the architecture or the separate, uncontrolled evolution of the code. Several approaches have been proposed to detect the inconsistencies between the architecture and the code but these tend to be limited for capturing inconsistencies that might occur at runtime. We present a runtime verification approach for detecting inconsistencies between the dynamic behavior of the architecture and the actual code. The approach is supported by a set of tools that implement the architecture and the code patterns in Prolog, and support the automatic generation of runtime monitors for detecting inconsistencies. We illustrate the approach and the toolset for a Crisis Management System case study.

Ciraci, Selim; Sozer, Hasan; Tekinerdogan, Bedir

2012-07-16T23:59:59.000Z

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Systems Engineering Group  

Science Conference Proceedings (OSTI)

... advances, and deploys measurement science to address application of engineering information systems to complex cyber-physical systems. ...

2011-10-03T23:59:59.000Z

242

Networked Control Systems Group  

Science Conference Proceedings (OSTI)

... and deploys measurement science for sensor networks and control systems used in manufacturing, construction, and other cyber-physical systems ...

2012-08-30T23:59:59.000Z

243

Systems Integration Division Homepage  

Science Conference Proceedings (OSTI)

... systems integration and engineering, life cycle assessment, cyber-physical systems, productivity measurement, sustainability and energy efficiency. ...

2013-09-16T23:59:59.000Z

244

Complex Systems Program Homepage  

Science Conference Proceedings (OSTI)

... Systems Program seeks to understand the fundamental science of these ... Complex Systems Fundamentals Roldan Pozo; Measurement Science for ...

2011-12-28T23:59:59.000Z

245

NETL: Gasification Systems  

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

Brochures Gasification Systems Reference Shelf - Brochures The Gasification Technology brochures are as follows: Gasification Plant Databases (Aug 2013) Gasification Systems...

246

Sensors, Instrumentation Systems  

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

Sensors, Instrumentation Systems science-innovationassetsimagesicon-science.jpg Sensors, Instrumentation Systems National security depends on science and technology. The...

247

Public Safety Communication Systems  

Science Conference Proceedings (OSTI)

... integrate legacy communication and information systems and ... will support system analysis and troubleshooting ... create a global market for equipment ...

2012-12-13T23:59:59.000Z

248

Environmental Management Systems  

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

Environmental Management Systems Technical Assistance Tools Technical Assistance Tool: Integrating Sustainable Practices into Environmental Management Systems , November 2009...

249

Experimental physics and industrial control system (EPICS) input/output controller (IOC) application developer`s guide  

SciTech Connect

This document describes the core software that resides in an Input/Output Controller (IOC), one of the major components of EPICS. The plan of the book is: EPICS overview, IOC test facilities, general purpose features, database locking - scanning - and processing, static database access, runtime database access, database scanning, record and device support, device support library, IOC database configuration, IOC initialization, and database structures. Other than the first chapter this document describes only core IOC software. Thus it does not describe other EPICS tools such as the sequencer. It also does not describe Channel Access, a major IOC component.

Kraimer, M.R.

1994-05-01T23:59:59.000Z

250

Efficient Collection And Storage Of Indexed Program Traces  

E-Print Network (OSTI)

the run can be reconstructed without having to run the program again. This hoists "run the program" out it should run on PC-class hardware, supporting standard operating systems, languages, and runtime systems the space and time requirements for recording must not exhaust the programmer's hardware or patience. I have

Zhang, Xiangyu

251

Mostly static program partitioning of binary executables  

Science Conference Proceedings (OSTI)

We have built a runtime compilation system that takes unmodified sequential binaries and improves their performance on off-the-shelf multiprocessors using dynamic vectorization and loop-level parallelization techniques. Our system, Azure, is purely software ... Keywords: Continuous compilation and optimization, binary translation, dynamic parallelization

Efe Yardimci; Michael Franz

2009-06-01T23:59:59.000Z

252

How to keep your head above water while detecting errors  

Science Conference Proceedings (OSTI)

Today's distributed systems need runtime error detection to catch errors arising from software bugs, hardware errors, or unexpected operating conditions. A prominent class of error detection techniques operates in a stateful manner, i.e., it keeps track ... Keywords: J2EE multi-tier systems, hidden markov model, high throughput distributed applications, intelligent sampling, stateful error detection

Ignacio Laguna; Fahad A. Arshad; David M. Grothe; Saurabh Bagchi

2009-11-01T23:59:59.000Z

253

Achieving efficiency, quality of service and robustness in multi-organizational Grids  

Science Conference Proceedings (OSTI)

Scalability, flexibility, quality of service provisioning, efficiency and robustness are the desired characteristics of most computing systems. Although the emerging Grid computing paradigm is scalable and flexible, achieving both efficiency and quality ... Keywords: Grid middleware, Grid resource management, Grid scheduling, Quality of service in distributed systems, Uncertain runtimes management

Umar Farooq; Shikharesh Majumdar; Eric W. Parsons

2009-01-01T23:59:59.000Z

254

Spatially non-uniform ground state and quantized vortices in a two-component  

E-Print Network (OSTI)

settings to residential and commercial use. The system features one assembly with a condenser the condenser. The water flow direction can be changed at run-time to optimize performance. Advantages ·· Energy. The system employs lithium bromide, which is now widely used in commercial air conditioning. In current

Demokritov, S.O.

255

High-performance numerical optimization on multicore clusters  

Science Conference Proceedings (OSTI)

This paper presents a software infrastructure for high performance numerical optimization on clusters of multicore systems. At the core, a runtime system implements a programming and execution environment for irregular and adaptive task-based parallelism. ... Keywords: global optimization, message passing, numerical differentiation, task parallelism

Panagiotis E. Hadjidoukas; Constantinos Voglis; Vassilios V. Dimakopoulos; Isaac E. Lagaris; Dimitris G. Papageorgiou

2011-08-01T23:59:59.000Z

256

Racer: effective race detection using aspectj  

Science Conference Proceedings (OSTI)

Programming errors occur frequently in large software systems, and even more so if these systems are concurrent. In the past researchers have developed specialized programs to aid programmers detecting concurrent programming errors such as deadlocks, ... Keywords: aspect-oriented programming, race detection, runtime verification, semantic pointcuts, static analysis

Eric Bodden; Klaus Havelund

2008-07-01T23:59:59.000Z

257

A Sustainability Plan for Princeton  

E-Print Network (OSTI)

with sensors for control of dimmable lighting systems will allow optimal use of ambient daylight while high and alternative energy sources. The campus can serve as both a model for advanced sustainability practices system improvements 8% Plant efficiency improvement and runtime 14% Alternative fuels 9% Grid CO2

Rowley, Clarence W.

258

Reflexes: Abstractions for integrating highly responsive tasks into Java applications  

Science Conference Proceedings (OSTI)

Achieving submillisecond response times in a managed language environment such as Java or C# requires overcoming significant challenges. In this article, we propose Reflexes, a programming model and runtime system infrastructure that lets developers ... Keywords: Java virtual machine, Real-time systems, memory management

Jesper Honig Spring; Filip Pizlo; Jean Privat; Rachid Guerraoui; Jan Vitek

2010-08-01T23:59:59.000Z

259

System Demonstration Multilingual Weather Forecast Generation System  

E-Print Network (OSTI)

System Demonstration Multilingual Weather Forecast Generation System Tianfang Yao DongmoZhang Qian (Multilingual Weather Forecasts Assistant) system will be demonstrated. It is developed to generate the multilingual text of the weather forecasts automatically. The raw data from the weather observation can be used

260

Energy Systems Integration  

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

Systems Integration Systems Integration Ben Kroposki, PhD, PE Director, Energy Systems Integration National Renewable Energy Laboratory 2 Reducing investment risk and optimizing systems in a rapidly changing energy world * Increasing penetration of variable RE in grid * Increasing ultra high energy efficiency buildings and controllable loads * New data, information, communications and controls * Electrification of transportation and alternative fuels * Integrating energy storage (stationary and mobile) and thermal storage * Interactions between electricity/thermal/fuels/data pathways * Increasing system flexibility and intelligence Current Energy Systems Future Energy Systems Why Energy Systems Integration? 3 Energy Systems Integration Continuum Scale Appliance (Plug)

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Systems Analysis Workshop Purpose  

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

National Renewable Energy Laboratory National Renewable Energy Laboratory DOE Hydrogen Program DOE Hydrogen Program Systems Analysis Workshop Systems Analysis Workshop Systems Integration Production Delivery Conversion Application Education Codes & Standards Safety Tech Validation Storage Systems Integration Production Delivery Conversion Application Education Codes & Standards Safety Tech Validation Storage Washington D.C. 28-29 Jul 04 Dale Gardner Systems Integration Operated for the U.S. Department of Energy by Midwest Research Institute * Battelle 2 Systems Analysis Workshop Topics * Meeting Goals * Systems Integration * Roles/Responsibilities of Analysis Participants * Systems Analysis * From this Workshop * Capability Presentations 3 Systems Analysis Workshop Meeting Goals 1) Understand the roles and activities of the DOE Technology Analyst,

262

Learning classifier systems  

Science Conference Proceedings (OSTI)

This tutorial gives an introduction to Learning Classifier Systems focusing on the Michigan-Style type and XCS in particular. The objective is to introduce (1) where LCSs come from, (2) how LCSs generally work, (3) which different systems exist, (4) ... Keywords: adaptive systems, cognitive systems, datamining, function approximation, genetic algorithms, learning classifier systems, machine learning, regression, reinforcement learning

Martin V. Butz

2010-07-01T23:59:59.000Z

263

Evaluation of systems usability  

Science Conference Proceedings (OSTI)

Motivation -- Development of complex system interfaces can benefit, in addition to the traditional safety focused evaluation, also from a usability approach to evaluation of system performance. But as the users, the information system, and the ... Keywords: activity theory, complex systems, joint cognitive systems, usability evaluation

Paula Savioja; Leena Norros; Leena Salo

2008-01-01T23:59:59.000Z

264

Lighting system with thermal management system  

DOE Patents (OSTI)

Lighting systems having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system is configured to provide an air flow, such as a unidirectional air flow, through the housing structure in order to cool the light source. The driver electronics are configured to provide power to each of the light source and the thermal management system.

Arik, Mehmet; Weaver, Stanton; Stecher, Thomas; Seeley, Charles; Kuenzler, Glenn; Wolfe, Jr., Charles; Utturkar, Yogen; Sharma, Rajdeep; Prabhakaran, Satish; Icoz, Tunc

2013-05-07T23:59:59.000Z

265

Concentrator Photovoltaic Systems  

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

Concentrator photovoltaic (PV) systems use less solar cell material than other PV systems. PV cells are the most expensive components of a PV system, on a per-area basis. A concentrator makes use...

266

Steam System Optimization  

E-Print Network (OSTI)

Most plant steam systems are complex systems. Usually the fuel required to produce the steam represents a major expense for manufacturing facilities. By properly operating and maintaining the steam system and making minor improvements, significant savings can be realized.

Aegerter, R. A.

1998-04-01T23:59:59.000Z

267

Hybrid Systems Diagnosis  

Science Conference Proceedings (OSTI)

This paper reports on an on-going project to investigate techniques to diagnose complex dynamical systems that are modeled as hybrid systems. In particular, we examine continuous systems with embedded supervisory controllers that experience abrupt, partial ...

Sheila A. McIlraith; Gautam Biswas; Dan Clancy; Vineet Gupta

2000-03-01T23:59:59.000Z

268

Evaluation of the 2008 Predictions of Run-Timing and Survival of Wild Migrant Yearling Chinook and Steelhead on the Columbia and Snake Rivers.  

DOE Green Energy (OSTI)

Columbia Basin Research uses the COMPASS model on a daily basis during the outmigration of Snake River Chinook and steelhead smolts to predict downstream passage and survival. Fish arrival predictions and observations from program RealTime along with predicted and observed environmental conditions are used to make in-season predictions of arrival and survival to various dams in the Columbia and Snake Rivers. For 2008, calibrations of travel and survival parameters for two stocks of fish-Snake River yearling PIT-tagged wild chinook salmon (chin1pit) and Snake River PIT-tagged steelhead (lgrStlhd)-were used to model travel and survival of steelhead and chinook stocks from Lower Granite Dam (LWG) or McNary Dam (MCN) to Bonneville Dam (BON). This report summarizes the success of the COMPASS/RealTime process to model these migrations as they occur. We compared model results on timing and survival to data from two sources: stock specific counts at dams and end-of-season control survival estimates (Jim Faulkner, NOAA, pers. comm. Dec. 16, 2008). The difference between the predicted and observed day of median passage and the Mean Absolute Deviation (MAD) between predicted and observed arrival cumulative distributions are measures of timing accuracy. MAD is essentially the average percentage error over the season. The difference between the predicted and observed survivals is a measure of survival accuracy. Model results and timing data were in good agreement from LWG to John Day Dam (JDA). Predictions of median passage days for the chin1pit and lgrStlhd stocks were 0 and 2 days (respectively) later than observed. MAD for chin1pit and lgrStlhd stocks at JDA were 2.3% and 5.9% (respectively). Between JDA and BON modeling and timing data were not as well matched. At BON, median passage predictions were 6 and 10 days later than observed and MAD values were 7.8% and 16.0% respectively. Model results and survival data were in good agreement from LWG to MCN. COMPASS predicted survivals of 0.77 and 0.69 for chin1pit and lgrStlhd, while the data control's survivals were 0.79 and 0.68. The differences are 0.02 and 0.01 (respectively), nearly identical. However, from MCN to BON, COMPASS predicted survivals of 0.74 and 0.69 while the data controls survivals were 0.47 and 0.53 respectively. Differences of 0.27 and 0.16. In summary: Travel and survival of chin1pit and lgrStlhd stocks were well modeled in the upper reaches. Fish in the lower reaches down through BON suffered unmodeled mortality, and/or passed BON undetected. A drop in bypass fraction and unmodeled mortality during the run could produce such patterns by shifting the observed median passage day to appear artificially early.

Beer, W. Nicholas; Iltis, Susannah; Anderson, James J.

2009-01-01T23:59:59.000Z

269

Using simulated partial dynamic run-time reconfiguration to share embedded FPGA compute and power resources across a swarm of unpiloted airborne vehicles  

Science Conference Proceedings (OSTI)

We show how the limited electrical power and FPGA compute resources available in a swarm of small UAVs can be shared by moving FPGA tasks from one UAV to another. A software and hardware infrastructure that supports the mobility of embedded FPGA applications ...

David Kearney; Mark Jasiunas

2007-01-01T23:59:59.000Z

270

Data & File Systems  

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

Data Management Policies NERSC File Systems HPSS Data Archive Optimizing IO performance on the Lustre file system IO Formats Sharing Data Transferring Data Unix Groups at NERSC...

271

Manufacturing Skills Certification System  

Science Conference Proceedings (OSTI)

... system to their business so that they utilize the skills certification system ... provide input to The Manufacturing Institute about aggregate skill needs of ...

2012-09-20T23:59:59.000Z

272

Sustainable Energy Systems Group  

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

Sustainable Energy Systems Group The Sustainable Energy Systems Group studies the impacts of energy generation and use, manufacturing, and other activities on the environment, the...

273

Usability for Biometric Systems  

Science Conference Proceedings (OSTI)

... to improve the usability of biometric systems, it is ... users will have with a system, including the hardware, software and instructional design of a ...

2010-10-05T23:59:59.000Z

274

Jobstream Separator System Design  

Science Conference Proceedings (OSTI)

... any unprivileged PDP-11/45 machine instruction or invoke ... are not an inherent part of the JSS system. ... Four of the six systems are }~C, SAC, NORAD ...

2013-04-15T23:59:59.000Z

275

Umbra's system representation.  

SciTech Connect

This document describes the Umbra System representation. Umbra System representation, initially developed in the spring of 2003, is implemented in Incr/Tcl using concepts borrowed from Carnegie Mellon University's Architecture Description Language (ADL) called Acme. In the spring of 2004 through January 2005, System was converted to Umbra 4, extended slightly, and adopted as the underlying software system for a variety of Umbra applications that support Complex Systems Engineering (CSE) and Complex Adaptive Systems Engineering (CASE). System is now a standard part Of Umbra 4. While Umbra 4 also includes an XML parser for System, the XML parser and Schema are not described in this document.

McDonald, Michael James

2005-07-01T23:59:59.000Z

276

Control system design method  

Science Conference Proceedings (OSTI)

A control system design method and concomitant control system comprising representing a physical apparatus to be controlled as a Hamiltonian system, determining elements of the Hamiltonian system representation which are power generators, power dissipators, and power storage devices, analyzing stability and performance of the Hamiltonian system based on the results of the determining step and determining necessary and sufficient conditions for stability of the Hamiltonian system, creating a stable control system based on the results of the analyzing step, and employing the resulting control system to control the physical apparatus.

Wilson, David G. (Tijeras, NM); Robinett, III, Rush D. (Tijeras, NM)

2012-02-21T23:59:59.000Z

277

Euclid File Systems  

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

Request Form Euclid File Systems Euclid has 3 kinds of file systems available to users: home directories, scratch directories and project directories, all provided by the NERSC...

278

Underwater Glider System Study  

E-Print Network (OSTI)

Leonard, N. E. , ONR Underwater Glider Systems Study GliderDavis. The Autonomous Underwater Glider Spray. IEEE Journalto the ONR Committee for Underwater Glider Systems Study,

2003-01-01T23:59:59.000Z

279

Training Management System  

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

Beam Time ESAF Contacts Calendars User Community Scientific Access Site AccessVisit Training Training Management System Argonne system used to track training requirements and...

280

NERSC File Systems  

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

Systems Systems NERSC File Systems Overview NERSC file systems can be divided into two categories: local and global. Local file systems are only accessible on a single platform, providing best performance; global file systems are accessible on multiple platforms, simplifying data sharing between platforms. File systems are configured for different purposes. On each machine you have access to at least three different file system Home: Permanent, relatively small storage for data like source code, shell scripts, etc. that you want to keep. This file system is not tuned for high performance from parallel jobs. Referenced by the environment variable $HOME. Scratch: Large, high-performance file system. Place your large data files in this file system for capacity and capability computing. Data is

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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.
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to obtain the most current and comprehensive results.


281

NREL: Energy Systems Integration - Energy Systems Integration...  

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

and concentrating solar systems are tested. There is an emphasis on measurement of parabolic trough mirror panels. For detailed laboratory specifications, download the Optical...

282

ReQoS: reactive static/dynamic compilation for QoS in warehouse scale computers  

Science Conference Proceedings (OSTI)

As multicore processors with expanding core counts continue to dominate the server market, the overall utilization of the class of datacenters known as warehouse scale computers (WSCs) depends heavily on colocation of multiple workloads on each ... Keywords: compiler, contention, cross-core interference, datacenter, dynamic techniques, multicore, online adaptation, quality of service, runtime systems, warehouse scale computers

Lingjia Tang; Jason Mars; Wei Wang; Tanima Dey; Mary Lou Soffa

2013-04-01T23:59:59.000Z

283

PROCEEDINGS, Thirty-Fourth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, February 9-11, 2009  

E-Print Network (OSTI)

models. Hence relatively much shorter run-times are associated. These models provide a good alternative that is cooling the reservoir. Since the system is closed as shown in Figure 7, the fluid volume is decreased because of the cooling which causes a decrease in the pressure as well. The cooling effect of the injected

Stanford University

284

More dynamic object reclassification: Fickle∥  

Science Conference Proceedings (OSTI)

Reclassification changes the class membership of an object at run-time while retaining its identity. We suggest language features for object reclassification, which extend an imperative, typed, class-based, object-oriented language.We present ... Keywords: Object-oriented languages, type and effect systems

Sophia Drossopoulou; Ferruccio Damiani; Mariangiola Dezani-Ciancaglini; Paola Giannini

2002-03-01T23:59:59.000Z

285

Adequate monitoring of service compositions  

Science Conference Proceedings (OSTI)

Monitoring is essential to validate the runtime behaviour of dynamic distributed systems. However, monitors can inform of relevant events as they occur, but by their very nature they will not report about all those events that are not happening. In ... Keywords: Adequacy criteria, Branch coverage, Choreography, Monitoring, Operation coverage

Antonia Bertolino; Eda Marchetti; Andrea Morichetta

2013-08-01T23:59:59.000Z

286

Towards Memory-Load Balanced Fast Fourier Transformations in Fine-Grain Execution Models  

Science Conference Proceedings (OSTI)

The code let model is a fine-grain dataflow-inspired program execution model that balances the parallelism and overhead of the runtime system. It plays an important role in terms of performance, scalability, and energy efficiency in exascale studies ... Keywords: FFT, fine-grain, execution model, memory bandwidth

Chen Chen, Yao Wu, Stephane Zuckerman, Guang R. Gao

2013-05-01T23:59:59.000Z

287

Hiding Checkpoint Overhead in HPC Applications with a Semi-Blocking Algorithm  

Science Conference Proceedings (OSTI)

The HPC community has seen a steady increase in the number of components in every generation of supercomputers. Assembling a large number of components into a single cluster makes a machine more powerful, but also much more prone to failures. Therefore, ... Keywords: fault tolerance, checkpoint/restart, semi-blocking algorithm, adaptive runtime system, SSD

Xiang Ni; Esteban Meneses; Laxmikant V. Kale

2012-09-01T23:59:59.000Z

288

New Grid Scheduling and Rescheduling Methods in the GrADS Project K. Cooper, A. Dasgupta, K. Kennedy, C. Koelbel, A. Mandal, G. Marin, M. Mazina, J. Mellor-Crummey  

E-Print Network (OSTI)

in diverse grid environ- ments using the microgrid. submitted for publication, May 2003. 8 #12; these methods were carried out on both the GrADS MacroGrid (a small but functional Grid) and the MicroGrid (a Monitor Performance Contract Violation Service Negotiator Scheduler Grid Runtime System Appli- cation

Chien, Andrew A.

289

N d'ordre : 103 ECOLE CENTRALE DE LILLE  

E-Print Network (OSTI)

in diverse grid environ- ments using the microgrid. submitted for publication, May 2003. 8 #12; these methods were carried out on both the GrADS MacroGrid (a small but functional Grid) and the MicroGrid (a Monitor Performance Contract Violation Service Negotiator Scheduler Grid Runtime System Appli- cation

290

RELIABILITY, AVAILABILITY, AND SERVICEABILITY FOR PETASCALE HIGH-END COMPUTING AND BEYOND  

Science Conference Proceedings (OSTI)

Our project is a multi-institutional research effort that adopts interplay of RELIABILITY, AVAILABILITY, and SERVICEABILITY (RAS) aspects for solving resilience issues in highend scientific computing in the next generation of supercomputers. results lie in the following tracks: Failure prediction in a large scale HPC; Investigate reliability issues and mitigation techniques including in GPGPU-based HPC system; HPC resilience runtime & tools.

Chokchai "Box" Leangsuksun

2011-05-31T23:59:59.000Z

291

At Rice, the Department of Electrical and Computer Engineering (ECE) is a dynamic and broad disci-pline that uses principles in mathematics, physics, and chemistry to address the challenges in engineer-  

E-Print Network (OSTI)

Surapaneni and Radu Teodorescu Department of Computer Science and Engineering Department of Electrical-based models that are trained at runtime. Compared to static dual modular redundancy (DMR), our system reduces a sim- ple checker that verifies execution of the main processor as in DIVA [5]. Timing speculation has

292

C A L I F O R N I A E N E R G Y C O M M I S S I O N B L U E P R I N T  

E-Print Network (OSTI)

Surapaneni and Radu Teodorescu Department of Computer Science and Engineering Department of Electrical-based models that are trained at runtime. Compared to static dual modular redundancy (DMR), our system reduces a sim- ple checker that verifies execution of the main processor as in DIVA [5]. Timing speculation has

293

Learning From Geometry in Learning for Tactical and Strategic Decision Domains  

E-Print Network (OSTI)

Surapaneni and Radu Teodorescu Department of Computer Science and Engineering Department of Electrical-based models that are trained at runtime. Compared to static dual modular redundancy (DMR), our system reduces a sim- ple checker that verifies execution of the main processor as in DIVA [5]. Timing speculation has

Stanley, Kenneth O.

294

Boundedness of adaptive nets is decidable  

Science Conference Proceedings (OSTI)

Boundedness is a relevant property for adaptive systems: creation, composition and destruction of components at runtime introduce different infiniteness dimensions. In this paper we show the decidability of the boundedness for adaptive nets, a subclass ... Keywords: Adaptive nets, Boundedness, Decidability, Theory of computation

Olivia Oanea

2011-08-01T23:59:59.000Z

295

Virtualized Environments for the Harness Workbench  

E-Print Network (OSTI)

Of The Requirements For The Degree Of Master of Science In Network Centered Computing, High Performance Computing of computational sciences today leads to a signicant need of high performance computing systems. High performance to develop an appropriate development and runtime environment for high performance computing platforms

Engelmann, Christian

296

A survey of online failure prediction methods  

Science Conference Proceedings (OSTI)

With the ever-growing complexity and dynamicity of computer systems, proactive fault management is an effective approach to enhancing availability. Online failure prediction is the key to such techniques. In contrast to classical reliability methods, ... Keywords: Error, failure prediction, fault, prediction metrics, runtime monitoring

Felix Salfner; Maren Lenk; Miroslaw Malek

2010-03-01T23:59:59.000Z

297

Interactive Drama, Art and Artificial Intelligence Michael Mateas  

E-Print Network (OSTI)

level that combines aspects of character and story. 1 Zoesis, the company founded by former Oz Project; the generated Java code is supported by the ABL runtime system. ABL modifies Hap in a number of ways, changing representations of the social action performed by the surface text utterance. A custom rule language (implemented

California at Santa Cruz, University of

298

A provenly correct translation of Fickle into Java  

Science Conference Proceedings (OSTI)

We present a translation from Fickle, a small object-oriented language allowing objects to change their class at runtime, into Java. The translation is provenly correct in the sense that it preserves the static and dynamic semantics. Moreover, ... Keywords: Type and effect systems, semantics preserving translation

D. Ancona; C. Anderson; F. Damiani; S. Drossopoulou; P. Giannini; E. Zucca

2007-04-01T23:59:59.000Z

299

Analysis of cache-coherence bottlenecks with hybrid hardware/software techniques  

Science Conference Proceedings (OSTI)

Application performance on high-performance shared-memory systems is often limited by sharing patterns resulting in cache-coherence bottlenecks. Current approaches to identify coherence bottlenecks incur considerable run-time overhead and do not scale. ... Keywords: Hardware performance monitoring, SMPs, cache analysis, coherence protocols, dynamic binary rewriting, program instrumentation

Jaydeep Marathe; Frank Mueller; Bronis R. de Supinski

2006-12-01T23:59:59.000Z

300

Lazy tree splitting  

Science Conference Proceedings (OSTI)

Nested data-parallelism (NDP) is a declarative style for programming irregular parallel applications. NDP languages provide language features favoring the NDP style, efficient compilation of NDP programs, and various common NDP operations like parallel ... Keywords: compilers, nested-data-parallel languages, run-time systems, scheduling

Lars Bergstrom; Mike Rainey; John Reppy; Adam Shaw; Matthew Fluet

2010-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

A scheduling framework for general-purpose parallel languages  

Science Conference Proceedings (OSTI)

The trend in microprocessor design toward multicore and manycore processors means that future performance gains in software will largely come from harnessing parallelism. To realize such gains, we need languages and implementations that can enable parallelism ... Keywords: compilers, heterogeneous parallel languages, run-time systems, scheduling

Matthew Fluet; Mike Rainey; John Reppy

2008-09-01T23:59:59.000Z

302

Different dynamic causal relationship approaches for cognitive maps  

Science Conference Proceedings (OSTI)

We study in this work the problem of adaptation on cognitive maps (CMs). We review different approaches of adaptation for CM, based on the idea that the causal relationships of the CM change during their phase of execution (runtime). Particularly, we ... Keywords: Adaptation systems, Cognitive maps, Fuzzy models

Jose Aguilar

2013-01-01T23:59:59.000Z

303

Compile-time dynamic voltage scaling settings: opportunities and limits  

Science Conference Proceedings (OSTI)

With power-related concerns becoming dominant aspects of hardware and software design, significant research effort has been devoted towards system power minimization. Among run-time power-management techniques, dynamic voltage scaling (DVS) has emerged ... Keywords: analytical model, compiler, dynamic voltage scaling, low power, mixed-integer linear programming

Fen Xie; Margaret Martonosi; Sharad Malik

2003-06-01T23:59:59.000Z

304

ISSN0249-6399ISRNINRIA/RR--8192--FR+ENG Dcembre 2012  

E-Print Network (OSTI)

most today parallel High Performance Computing (HPC) software is written as highly tuned code taking mechanism. Key-words: High Performance Computing (HPC); GPU; Task; Runtime System; Conjugate Gradient. hal, the architectural complexity of High Performance Computing (HPC) plat- forms has strongly increased. To cope

Paris-Sud XI, Université de

305

Explaining ML type errors by data flows  

Science Conference Proceedings (OSTI)

We present a novel approach to explaining ML type errors: Since the type system inhibits data flows that would abort the program at run-time, our type checker identifies as explanations those data flows that violate the typing rules. It also detects ...

Holger Gast

2004-09-01T23:59:59.000Z

306

PERFORMANCEMETRICS INTELLIGENT SYSTEMS ...  

Science Conference Proceedings (OSTI)

Page 1. PERMIS-2007 FOREWORD SPONSORS PerMIS 2008 PERFORMANCEMETRICS FOR INTELLIGENT SYSTEMS (PERMIS) ...

2010-11-12T23:59:59.000Z

307

PHOTOVOLTAIC SOLAR ELECTRIC SYSTEM  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION Buying a PHOTOVOLTAIC SOLAR ELECTRIC SYSTEM A Consumer Guide 2003 System: A Consumer Guide i Buying a Photovoltaic Solar Electric System A Consumer Guide California Energy water system that uses the sun's energy to heat water, solar electric or photovoltaic technology uses

Krothapalli, Anjaneyulu

308

Quality System Documentation Management  

Science Conference Proceedings (OSTI)

Quality System Documentation Management. ... Minutes, summaries, or notes from Management Meetings of significance are archived here. ...

2012-08-21T23:59:59.000Z

309

Laboratory Management (Quality) Systems  

Science Conference Proceedings (OSTI)

Laboratory Management (Quality) Systems. NISTIR 7028 Type Evaluation Quality Manual Template. This NISTIR has been ...

2012-05-02T23:59:59.000Z

310

Medical imaging systems  

Science Conference Proceedings (OSTI)

A medical imaging system provides simultaneous rendering of visible light and diagnostic or functional images. The system may be portable, and may include adapters for connecting various light sources and cameras in open surgical environments or laparascopic or endoscopic environments. A user interface provides control over the functionality of the integrated imaging system. In one embodiment, the system provides a tool for surgical pathology.

Frangioni, John V

2013-06-25T23:59:59.000Z

311

Petascale system management experiences  

Science Conference Proceedings (OSTI)

Petascale HPC systems are among the largest systems in the world. Intrepid, one such system, is a 40,000 node, 556 teraflop Blue Gene/P system that has been deployed at Argonne National Laboratory. In this paper, we provide some background about the ...

Narayan Desai; Rick Bradshaw; Cory Lueninghoener; Andrew Cherry; Susan Coghlan; William Scullin

2008-11-01T23:59:59.000Z

312

Space System Architecture  

E-Print Network (OSTI)

Final Report of SSPARC: the Space Systems, Policy, and Architecture Research Consortium (Thrust II and III)

McManus, Dr. Hugh

313

Building the Senceive System  

Science Conference Proceedings (OSTI)

The conception and development of pervasive systems, i.e, the systems which will be used in pervasive computing environments, involve interdisciplinary team work. Apparently, the team consists of people with a diverse research background and expertise. ... Keywords: activity recognition, building a sensing system, complex system design, network configuration, project work, wireless sensor networks

Waltenegus Dargie; Alexander Schill

2009-05-01T23:59:59.000Z

314

Performance of Integrated Systems of Automated Roller Shade Systems...  

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

032011 Keywords automated roller shade systems, daylight responsive dimming systems, daylighting, Integrated systems, photoelectric controls Abstract Daylight responsive...

315

Renovating Residential HVAC Systems HVAC Systems  

E-Print Network (OSTI)

- 1 - LBNL 57406 Renovating Residential HVAC Systems HVAC Systems J.A. McWilliams and I.S. Walker and Air Conditioning), and Stacy Hunt and Ananda Harzell (IBACOS). #12;- 3 - Renovating Residential HVAC Guideline for Residential HVAC Retrofits (http

316

Photovoltaic systems and applications  

DOE Green Energy (OSTI)

Abstracts are given of presentations given at a project review meeting held at Albuquerque, NM. The proceedings cover the past accomplishments and current activities of the Photovoltaic Systems Research, Balance-of-System Technology Development and System Application Experiments Projects at Sandia National Laboratories. The status of intermediate system application experiments and residential system analysis is emphasized. Some discussion of the future of the Photovoltaic Program in general, and the Sandia projects in particular is also presented.

Not Available

1982-01-01T23:59:59.000Z

317

Lighting Control Systems  

Science Conference Proceedings (OSTI)

The demand for lighting control systems in residential, commercial, and industrial facilities is on the rise with the demand for increased energy savings. With lighting accounting for almost 23% of grid load, there is significant opportunity to reduce lighting load while improving the quality of light for customers. Lighting control systems are becoming more intelligent as the need for them to interface with building control systems and demand response systems also increases. Lighting control systems use...

2009-12-17T23:59:59.000Z

318

The Napier Type System  

E-Print Network (OSTI)

Persistent programming is concerned with the construction of large and long lived systems of data. In designing and building persistent object systems, we are attempting to regularise the activities that are performed on data by programming languages, operating systems, database management systems and file systems. We have identified the following areas of research which we are investigating in the context of persistent systems. They are: controlling complexity, protection of data, orthogonal persistence, controlled system evolution and concurrent computation. In this paper, we describe the data modelling facilities of the Napier type system. We also demonstrate the flexible and incremental nature of the type checking mechanism that is required for persistent programming. The type system is central to the nature of the Napier language and we will demonstrate how it has been designed to solve problems in the five areas identified above.

R. Morrison; A.L. Brown; R. Carrick; R.C.H. Connor; A. Dearle; M.P. Atkinson

1989-01-01T23:59:59.000Z

319

AUTONOMOUS ROBOTIC INSPECTION EXPERIMENTAL SYSTEM  

Science Conference Proceedings (OSTI)

This document contains appendices on these topics: COMPUTERS AND CONTROLS; COMPUTER VISION SYSTEM; ELECTRICAL SYSTEMS; MECHANICAL SYSTEMS; ROBOTIC VEHICLE SYSTEMS; FIELD TRIALS.

David N. Rocheleau, Senior Investigator; Edward A. Hamilton, Associate Director, SCUREF; Jerry L. Hudgins, Senior Investigator; Paul McCarty, Graduate Research Assistant; Robert J. Schalkoff, Senior Investigator; Robert O. Pettus, Project Manager & Principal Investigator

1998-08-01T23:59:59.000Z

320

Modeling Power Systems as Complex Adaptive Systems  

Science Conference Proceedings (OSTI)

Physical analogs have shown considerable promise for understanding the behavior of complex adaptive systems, including macroeconomics, biological systems, social networks, and electric power markets. Many of today's most challenging technical and policy questions can be reduced to a distributed economic control problem. Indeed, economically based control of large-scale systems is founded on the conjecture that the price-based regulation (e.g., auctions, markets) results in an optimal allocation of resources and emergent optimal system control. This report explores the state-of-the-art physical analogs for understanding the behavior of some econophysical systems and deriving stable and robust control strategies for using them. We review and discuss applications of some analytic methods based on a thermodynamic metaphor, according to which the interplay between system entropy and conservation laws gives rise to intuitive and governing global properties of complex systems that cannot be otherwise understood. We apply these methods to the question of how power markets can be expected to behave under a variety of conditions.

Chassin, David P.; Malard, Joel M.; Posse, Christian; Gangopadhyaya, Asim; Lu, Ning; Katipamula, Srinivas; Mallow, J V.

2004-12-30T23:59:59.000Z

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Environmental Management System  

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

Management System Management System Environmental Management System An Environmental Management System is a systematic method for assessing mission activities, determining the environmental impacts of those activities, prioritizing improvements, and measuring results. May 30, 2012 The continuous improvement cycle Our Environmental Management System encourages continuous improvement of our environmental performance. Contact Environmental Communication & Public Involvement P.O. Box 1663 MS M996 Los Alamos, NM 87545 (505) 667-0216 Email Managing our effects on the environment We are committed to protecting the environment while conducting our national security and energy-related missions. Laboratory Environmental Governing Policy What is the Environmental Management System? It covers every program in the Laboratory

322

Verification of Adaptive Systems  

SciTech Connect

Adaptive systems are critical for future space and other unmanned and intelligent systems. Verification of these systems is also critical for their use in systems with potential harm to human life or with large financial investments. Due to their nondeterministic nature and extremely large state space, current methods for verification of software systems are not adequate to provide a high level of assurance for them. The combination of stabilization science, high performance computing simulations, compositional verification and traditional verification techniques, plus operational monitors, provides a complete approach to verification and deployment of adaptive systems that has not been used before. This paper gives an overview of this approach.

Pullum, Laura L [ORNL; Cui, Xiaohui [New York Institute of Technology (NYIT); Vassev, Emil [Lero The Irish Software Engineering Research Centre; Hinchey, Mike [Lero The Irish Software Engineering Research Centre; Rouff, Christopher [Lockheed Martin Corporation; Buskens, Richard [Lockheed Martin Corporation

2012-01-01T23:59:59.000Z

323

SUBSURFACE EMPLACEMENT TRANSPORTATION SYSTEM  

SciTech Connect

The objective of this analysis is to identify issues and criteria that apply to the design of the Subsurface Emplacement Transportation System (SET). The SET consists of the track used by the waste package handling equipment, the conductors and related equipment used to supply electrical power to that equipment, and the instrumentation and controls used to monitor and operate those track and power supply systems. Major considerations of this analysis include: (1) Operational life of the SET; (2) Geometric constraints on the track layout; (3) Operating loads on the track; (4) Environmentally induced loads on the track; (5) Power supply (electrification) requirements; and (6) Instrumentation and control requirements. This analysis will provide the basis for development of the system description document (SDD) for the SET. This analysis also defines the interfaces that need to be considered in the design of the SET. These interfaces include, but are not limited to, the following: (1) Waste handling building; (2) Monitored Geologic Repository (MGR) surface site layout; (3) Waste Emplacement System (WES); (4) Waste Retrieval System (WRS); (5) Ground Control System (GCS); (6) Ex-Container System (XCS); (7) Subsurface Electrical Distribution System (SED); (8) MGR Operations Monitoring and Control System (OMC); (9) Subsurface Facility System (SFS); (10) Subsurface Fire Protection System (SFR); (11) Performance Confirmation Emplacement Drift Monitoring System (PCM); and (12) Backfill Emplacement System (BES).

T. Wilson; R. Novotny

1999-11-22T23:59:59.000Z

324

Business System Planning Project System Requirements Specification  

SciTech Connect

The purpose of the Business Systems Planning Project System Requirements Specification (SRS) is to provide the outline and contents of the requirements for the CH2M HILL Hanford Group, Inc. (CHG) integrated business and technical information systems. The SRS will translate proposed objectives into the statement of the functions that are to be performed and data and information flows that they require. The requirements gathering methodology will use (1) facilitated group requirement sessions; (2) individual interviews; (3) surveys; and (4) document reviews. The requirements will be verified and validated through coordination of the technical requirement team and CHG Managers. The SRS document used the content and format specified in Lockheed Martin Services, Inc. Organization Standard Software Practices in conjunction with the Institute of Electrical and Electronics Engineers Standard 8340-1984 for Systems Requirements Documents.

NELSON, R.E.

2000-09-08T23:59:59.000Z

325

EPICS system: system structure and user interface  

SciTech Connect

This paper present the user's view of and the general organization of the EPICS control system at Fermilab. Various subsystems of the EPICS control system are discussed. These include the user command language, software protection, the device database, remote computer interfaces, and several application utilities. This paper is related to two other papers on EPICS: an overview paper and a detailed implementation paper.

West, R.E.; Bartlett, J.F.; Bobbitt, J.S.; Lahey, T.E.; Kramper, B.J.; MacKinnon, B.A.

1984-02-01T23:59:59.000Z

326

System Compatibility of Modern Lighting Control Systems  

Science Conference Proceedings (OSTI)

The state of the energy industry combined with growing economic pressures will drive accelerated use of energy-efficient dimmable lighting devices and control systems. While penetration and application will be different across customer sectors, the goal is to dynamically reduce lighting load without compromising productivity and the quality of light and life in a timely manner. Continual improvement of dimmable devices and controls is paramount to achieving that goal. EPRI research concepts in system com...

2011-10-11T23:59:59.000Z

327

Standard-C hydrogen monitoring system, system design description  

DOE Green Energy (OSTI)

Standard-C cabinet arrangement system design description for the Standard Hydrogen Monitoring System.

Schneider, T.C., Westinghouse Hanford

1996-08-29T23:59:59.000Z

328

Photovoltaic System Performance  

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

Photovoltaic (PV) systems are usually composed of numerous solar arrays, which in turn, are composed of numerous PV cells. The performance of the system is therefore dependent on the performance of...

329

Stepping Motor Control System  

E-Print Network (OSTI)

This paper describes a hardware system designed to facilitate position and velocity control of a group of eight stepping motors using a PDP-11. The system includes motor driver cards and other interface cards in addition ...

Larson, Noble G.

330

Electricity Distribution System Workshop  

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

Discussion Summary Discussion Summary Electricity Transmission System Workshop 1 Grid Tech Team Discussion Summary Electricity Transmission System Workshop 2 Table of Contents INTRODUCTION ............................................................................................................................................. 3 EXECUTIVE SUMMARY .................................................................................................................................. 4 Process ...................................................................................................................................................... 4 Synthesized Challenges ............................................................................................................................. 5

331

Residential Geothermal Systems Credit  

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

A resident individual taxpayer of Montana who installs a geothermal heating or cooling system in their principal dwelling can claim a tax credit based on the installation costs of the system, not...

332

Crowd-powered systems  

E-Print Network (OSTI)

Crowd-powered systems combine computation with human intelligence, drawn from large groups of people connecting and coordinating online. These hybrid systems enable applications and experiences that neither crowds nor ...

Bernstein, Michael Scott

2012-01-01T23:59:59.000Z

333

Urban organizational systems  

E-Print Network (OSTI)

General systems theory provides a conceptual framework for the integration of knowledge from a wide variety of specialized fields. Systems theory serves to synthesize, reconcile, and integrate knowledge making it possible ...

Morog, Joseph V

1981-01-01T23:59:59.000Z

334

Double Degenerate Binary Systems  

Science Conference Proceedings (OSTI)

In this study, angular momentum loss via gravitational radiation in double degenerate binary (DDB)systems (NS + NS, NS + WD, WD + WD, and AM CVn) is studied. Energy loss by gravitational waves has been estimated for each type of systems.

Yakut, K. [University of Ege, Department of Astronomy and Space Sciences, 35100-Izmir (Turkey)

2011-09-21T23:59:59.000Z

335

Transport in granular systems  

E-Print Network (OSTI)

There are many situations in which a continuum view of granular systems does not fully capture the relevant mechanics. In order for engineers to be able to design systems for transporting granular materials, there needs ...

Wendell, Dawn M. (Dawn Marie), 1983-

2011-01-01T23:59:59.000Z

336

Regimes in Simple Systems  

Science Conference Proceedings (OSTI)

Dynamical systems possessing regimes are identified with those where the state space possesses two or more regions such that transitions of the state from either region to the other are rare. Systems with regimes are compared to those where ...

Edward N. Lorenz

2006-08-01T23:59:59.000Z

337

IBM POWER7 systems  

Science Conference Proceedings (OSTI)

This paper describes the system architectures and designs of the IBM POWER7 servers. From the smallest single-processor socket blade to the largest 32-processor-socket 256-core enterprise rack server, each system is designed to fully ...

R. X. Arroyo; R. J. Harrington; S. P. Hartman; T. Nguyen

2011-05-01T23:59:59.000Z

338

Absorption heat pump system  

DOE Patents (OSTI)

The efficiency of an absorption heat pump system is improved by conducting liquid from a second stage evaporator thereof to an auxiliary heat exchanger positioned downstream of a primary heat exchanger in the desorber of the system.

Grossman, Gershon (Oak Ridge, TN)

1984-01-01T23:59:59.000Z

339

Absorption heat pump system  

DOE Patents (OSTI)

The efficiency of an absorption heat pump system is improved by conducting liquid from a second stage evaporator thereof to an auxiliary heat exchanger positioned downstream of a primary heat exchanger in the desorber of the system.

Grossman, G.

1982-06-16T23:59:59.000Z

340

Routing Policy System Replication  

Science Conference Proceedings (OSTI)

The RIPE database specifications and RPSL define languages used as the basis for representing information in a routing policy system. A repository for routing policy system information is known as a routing registry. A routing registry provides a means ...

C. Villamizar; C. Alaettinoglu; R. Govindan; D. Meyer

2000-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Energy Basics: Photovoltaic Systems  

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

an entire PV system. This system is usually everything needed to meet a particular energy demand, such as powering a water pump, the appliances and lights in a home, or-if the...

342

Hanford System Overview  

CHG0612-16.0 CH2M-32399-VA Hanford System Overview Hanford System Overview January 23-24, 2007 Paul Certa Tom Crawford Aluminum and Chromium Leaching for

343

Small Modular Biomass Systems  

DOE Green Energy (OSTI)

Fact sheet that provides an introduction to small modular biomass systems. These systems can help supply electricity to rural areas, businesses, and people without power. They use locally available biomass fuels such as wood, crop waste, and animal manures.

Not Available

2002-12-01T23:59:59.000Z

344

Energy Basics: Photovoltaic Systems  

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

Energy Basics Renewable Energy Printable Version Share this resource Biomass Geothermal Hydrogen Hydropower Ocean Solar Photovoltaics Cells Systems Concentrating Solar...

345

New electrochromic mirror systems  

New electrochromic mirror systems ... recorded using a fiber optic spectrometer (Ocean Optics). ... transmittance modulation of infrared light could lead

346

Microfluidic Partitioning System  

home \\ technologies \\ microfluidic partitioning system. Technologies: Ready-to-Sign Licenses: ... for the Department of Energy's National Nuclear Security Administration

347

Monitoring System Performance (Presentation)  

DOE Green Energy (OSTI)

Requirements for a standard test to rate the durability of photovoltaic (PV) modules at system voltage are discussed.

Emery, K.; Smith, R.

2011-02-01T23:59:59.000Z

348

Information Systems Group Homepage  

Science Conference Proceedings (OSTI)

... computational methods, data/knowledge mining tools, and semantic services using systems-based approaches, to advance measurement science ...

2012-06-26T23:59:59.000Z

349

Lithium battery management system  

SciTech Connect

Provided is a system for managing a lithium battery system having a plurality of cells. The battery system comprises a variable-resistance element electrically connected to a cell and located proximate a portion of the cell; and a device for determining, utilizing the variable-resistance element, whether the temperature of the cell has exceeded a predetermined threshold. A method of managing the temperature of a lithium battery system is also included.

Dougherty, Thomas J. (Waukesha, WI)

2012-05-08T23:59:59.000Z

350

Distribution System Losses Evaluation  

Science Conference Proceedings (OSTI)

Currently, there is not an industry standard on how utilities calculate and account for electrical losses and reductions in electric system losses. Computer models used to analyze power flows typically only include the primary components of the distribution system infrastructure. More detailed electric system models can benefit utilities by providing more accurate loss calculations as well as benefits for system planning and engineering. The utility industry could benefit from having a consistent and uni...

2008-12-16T23:59:59.000Z

351

Interactive Intelligent Systems  

Science Conference Proceedings (OSTI)

... in applying interactive system utility measurements against some hard problems in both the intelligence community (IC) and the military (DARPA). ...

2011-09-08T23:59:59.000Z

352

CSRC - Systems Administration  

Science Conference Proceedings (OSTI)

... The intended audience is composed of Windows 2000 Systems Administrators and technical Windows 2000 Professional users working in ...

353

Fuel washout detection system  

DOE Patents (OSTI)

A system for detecting grossly failed reactor fuel by detection of particulate matter as accumulated on a filter.

Colburn, Richard P. (Pasco, WA)

1985-01-01T23:59:59.000Z

354

DOE Systems Engineering Methodology  

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

Computer System Retirement Guidelines Computer System Retirement Guidelines Version 3 September 2002 U.S. Department of Energy Office of the Chief Information Officer Computer System Retirement Guidelines Date: September 2002 Page 1 Rev Date: Table of Contents Section Page Purpose ............................................................................................................................................ 2 Initiation and Distribution ............................................................................................................... 2 Resource .......................................................................................................................................... 2 General Information ........................................................................................................................

355

UML for systems engineering  

Science Conference Proceedings (OSTI)

The paper provides an introduction to the employment of Unified Modeling Language (UML) in systems engineering. The standard being developed for this purpose is the Systems Modeling Language (SysML) specification. This paper, while not dealing with SysML ... Keywords: DoDAF, Software engineering, SysML, Systems engineering, UML

Brian Willard

2007-01-01T23:59:59.000Z

356

Recommender systems survey  

Science Conference Proceedings (OSTI)

Recommender systems have developed in parallel with the web. They were initially based on demographic, content-based and collaborative filtering. Currently, these systems are incorporating social information. In the future, they will use implicit, local ... Keywords: Cold-start, Collaborative filtering, Evaluation metrics, Hybrid, Internet of things, Prediction, Recommendation, Recommender systems, Similarity measures, Social

J. Bobadilla, F. Ortega, A. Hernando, A. GutiRrez

2013-07-01T23:59:59.000Z

357

Modular Integrated Energy Systems  

E-Print Network (OSTI)

system (or CHP -- Cooling, Heat and Power) system at Ft. Bragg. Much of this work is funded by the U consists of a gas turbine-generator, a heat recovery steam generator, and a waste heat fired absorption-driven absorption chiller, · Install and monitor the performance of a prototype IES modular system employing

Oak Ridge National Laboratory

358

CMS System Security Plan Procedure  

Science Conference Proceedings (OSTI)

... TASK 5: SYSTEM DECOMMISSION. ... BPSSM Business Partners Systems Security Manual. ... of Information Technology, Policy, Procedures, & Audits. ...

2009-06-30T23:59:59.000Z

359

NIST Intranet Quality System Links  

Science Conference Proceedings (OSTI)

Safety. Environmental Management System. NIST Quality System Resources. Assessor Resources. MSAG Website. Dates and Deadlines. ...

2012-08-21T23:59:59.000Z

360

Match Pumps to System Requirements  

SciTech Connect

BestPractices Program tip sheet discussing pumping system efficiency matching pumps to system requirements

2005-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Distribution System Research Priorities  

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

Mark McGranaghan Mark McGranaghan EPRI ELECTRICITY DISTRIBUTION SYSTEM WORKSHOP Crystal City, VA September 24, 2012 Distribution System Research Priorities 2 © 2012 Electric Power Research Institute, Inc. All rights reserved. The Power System Roadmaps start with a Vision Future Power System will require new technologies, infrastructure, and control systems 3 © 2012 Electric Power Research Institute, Inc. All rights reserved. R&D Roadmaps - Coordination is Critical Roadmaps are living documents 4 © 2012 Electric Power Research Institute, Inc. All rights reserved. Developing the next generation grid * Industry needs new technologies, communication protocols, and information management methods - More variable generation sources and controllable loads - Aging infrastructure

362

Intelligent Car System  

E-Print Network (OSTI)

In modern life the road safety has becomes the core issue. One single move of a driver can cause horrifying accident. The main goal of intelligent car system is to make communication with other cars on the road. The system is able to control to speed, direction and the distance between the cars the intelligent car system is able to recognize traffic light and is able to take decision according to it. This paper presents a framework of the intelligent car system. I validate several aspect of our system using simulation.

Siddique, Qasim

2012-01-01T23:59:59.000Z

363

Massively parallel computing system  

DOE Patents (OSTI)

A parallel computing system and method having improved performance where a program is concurrently run on a plurality of nodes for reducing total processing time, each node having a processor, a memory, and a predetermined number of communication channels connected to the node and independently connected directly to other nodes. The present invention improves performance of the parallel computing system by providing a system which can provide efficient communication between the processors and between the system and input and output devices. A method is also disclosed which can locate defective nodes with the computing system.

Benner, R.E.; Gustafson, J.L.; Montry, G.R.

1989-03-01T23:59:59.000Z

364

Business System Planning Project, Preliminary System Design  

SciTech Connect

CH2M HILL Hanford Group, Inc. (CHG) is currently performing many core business functions including, but not limited to, work control, planning, scheduling, cost estimating, procurement, training, and human resources. Other core business functions are managed by or dependent on Project Hanford Management Contractors including, but not limited to, payroll, benefits and pension administration, inventory control, accounts payable, and records management. In addition, CHG has business relationships with its parent company CH2M HILL, U.S. Department of Energy, Office of River Protection and other River Protection Project contractors, government agencies, and vendors. The Business Systems Planning (BSP) Project, under the sponsorship of the CH2M HILL Hanford Group, Inc. Chief Information Officer (CIO), have recommended information system solutions that will support CHG business areas. The Preliminary System Design was developed using the recommendations from the Alternatives Analysis, RPP-6499, Rev 0 and will become the design base for any follow-on implementation projects. The Preliminary System Design will present a high-level system design, providing a high-level overview of the Commercial-Off-The-Shelf (COTS) modules and identify internal and external relationships. This document will not define data structures, user interface components (screens, reports, menus, etc.), business rules or processes. These in-depth activities will be accomplished at implementation planning time.

EVOSEVICH, S.

2000-10-30T23:59:59.000Z

365

Turbine power plant system  

SciTech Connect

A turbine power plant system consisting of three sub-systems; a gas turbine sub-system, an exhaust turbine sub-system, and a steam turbine sub-system. The three turbine sub-systems use one external fuel source which is used to drive the turbine of the gas turbine sub-system. Hot exhaust fluid from the gas turbine sub-system is used to drive the turbines of the exhaust turbine sub-system and heat energy from the combustion chamber of the gas turbine sub-system is used to drive the turbine of the steam turbine sub-system. Each sub-system has a generator. In the gas turbine sub-system, air flows through several compressors and a combustion chamber and drives the gas turbine. In the exhaust turbine sub-system, hot exhaust fluid from the gas turbine sub-system flows into the second passageway arrangement of first and fourth heat exchangers and thus transfering the heat energy to the first passageway arrangement of the first and fourth heat exchangers which are connected to the inlets of first and second turbines, thus driving them. Each turbine has its own closed loop fluid cycle which consists of the turbine and three heat exchangers and which uses a fluid which boils at low temperatures. A cooler is connected to a corresponding compressor which forms another closed loop system and is used to cool the exhaust fluid from each of the two above mentioned turbines. In the steam turbine sub-system, hot fluid is used to drive the steam turbine and then it flows through a fluid duct, to a first compressor, the first fluid passageway arrangement of first and second heat exchangers, the second passageway of the first heat exchanger, the combustion chamber of the gas turbine where it receives heat energy, and then finally to the inlet of the steam turbine, all in one closed loop fluid cycle. A cooler is connected to the second passageway of the second heat exchanger in a closed loop fluid cycle, which is used to cool the turbine exhaust.

Papastavros, D.

1985-03-05T23:59:59.000Z

366

NEWTON's Metric System Resources  

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

Please select any link below. Search this page, using your web browser's search function. Please select any link below. Search this page, using your web browser's search function. Metric System References Do you have a great metric reference link? Please click our Ideas page. Featured Reference Links: Metric (SI) References Metric (SI) References Having trouble with the metric system? Visit the National Institute of Standards and Technology's site about the rules and style conventions of the International System of Units (SI). The Metric System The Metric System Need another reference? Try this site provided by Wikipedia that discusses the metric system and its history in depth. Metric Converter Metric Converter Need to convert to Metric? OnlineConversion.com allows you to convert just about anything to just about anything else. This will let you easily from metric to US Standard notation, and vice versa.

367

NSLS Computer Systems  

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

Computer Systems Computer Systems Micro Systems WorkStation Applications Network Configuration Documents The National Synchrotron Light Source facility at the Brookhaven National Laboratory in New York, consists of two storage rings, one for VUV operating at 800 Mev and one for XRAY at 2.8 Gev and a common injection system comprised of a linear accelerator and a Booster ring. Hardware Architecture The hardware architecture of the present control system follows the current trend seen in many accelerator facilities. It is a two-level distributed system consisting of HP/900 series workstations connected by the standard ethernet to VME-based microprocessor subsystems. All the workstations have local disk and sufficient memory for fast response. Workstations are used as file server, back-up file server and for program development and other

368

Quality monitored distributed voting system  

DOE Patents (OSTI)

A quality monitoring system can detect certain system faults and fraud attempts in a distributed voting system. The system uses decoy voters to cast predetermined check ballots. Absent check ballots can indicate system faults. Altered check ballots can indicate attempts at counterfeiting votes. The system can also cast check ballots at predetermined times to provide another check on the distributed voting system. 6 figs.

Skogmo, D.

1997-03-18T23:59:59.000Z

369

Building America System Research  

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

Building America System Building America System Research Eric Werling, DOE Ren Anderson, NREL eric.werling@ee.doe.gov, 202-586-0410 ren.anderson@nrel.gov, 303-384-7443 April 2, 2013 Building America System Innovations: Accelerating Innovation in Home Energy Savings 2 | Program Name or Ancillary Text eere.energy.gov Project Relevance 3 | Building Technologies Office eere.energy.gov Building America Fills Market Need for a High-Performance Homes HUB of Innovation

370

System and Network Management  

Science Conference Proceedings (OSTI)

This document covers Systems and Network Management Requirements and is the first deliverable in a joint EPRI and Utility User Project to develop Network Management capability for Electric Utility Automation Systems (UAS) using international communication standards such as IEC 61850. The management of substation automation systems is critical since tools are now based, for the most part, on proprietary hardware and software. In modern state-of-the art substations, traditional network management has ...

2012-12-20T23:59:59.000Z

371

Multizone infiltration monitoring system  

DOE Green Energy (OSTI)

A multizone infiltration monitoring system (MIMS) using a single tracer gas has been developed. MIMS measures zonal infiltration and exfiltration as well as interzonal air movement rates. The system has been used at the 4-zone test house at the SERI interim field site, and this paper presents preliminary results. The present system can determine zonal infiltration rates, and the results show significant differences in infiltration rates for the various zones.

Wortman, D.N.; Burch, J.; Judkoff, R.

1982-06-01T23:59:59.000Z

372

Plasmatron-catalyst system  

DOE Patents (OSTI)

A plasmatron-catalyst system. The system generates hydrogen-rich gas and comprises a plasmatron and at least one catalyst for receiving an output from the plasmatron to produce hydrogen-rich gas. In a preferred embodiment, the plasmatron receives as an input air, fuel and water/steam for use in the reforming process. The system increases the hydrogen yield and decreases the amount of carbon monoxide.

Bromberg, Leslie (Sharon, MA); Cohn, Daniel R. (Chestnut Hill, MA); Rabinovich, Alexander (Swampscott, MA); Alexeev, Nikolai (Moscow, RU)

2007-10-09T23:59:59.000Z

373

Scalable autonic processing systems  

Science Conference Proceedings (OSTI)

The number of automotive functions that are controlled by computers is rapidly increasing. In the past, these functions were confined to stand-alone control units, such as the engine or ABS brake controller. In modern cars, the data exchange between ... Keywords: autonic systems, distributed processing and real-time systems, event-triggered, fault tolerance, parallel processing, scalable automotive electronics system, time-triggered, vehicle electronics

Adnan Shaout; Najamuz Zaman; Taisir Eldos

2003-07-01T23:59:59.000Z

374

Transient data recorder systems  

DOE Patents (OSTI)

Transient data recorder systems including a high speed charge coupled device and a device exerciser, including a high speed sampler and driver circuitry.

Linnenbrink, Thomas E. (Winnetka, IL); Gradl, David A. (Des Plaines, IL)

1982-01-01T23:59:59.000Z

375

Norcal Waste Systems, Inc.  

SciTech Connect

Fact sheet describes the LNG long-haul heavy-duty trucks at Norcal Waste Systems Inc.'s Sanitary Fill Company.

Not Available

2002-12-01T23:59:59.000Z

376

System Benefits Charge  

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

New York's system benefits charge (SBC), established in 1996 by the New York Public Service Commission (PSC), supports energy efficiency, education and outreach, research and development, and low...

377

Intelligent Systems Division Homepage  

Science Conference Proceedings (OSTI)

... the versatility, autonomy, and rapid re-tasking of intelligent robots and automation technologies for smart manufacturing and cyber-physical systems ...

2013-08-06T23:59:59.000Z

378

Energy Information Systems website  

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

and visualize the energy use of their buildings. Please visit the recently updated Energy Information System website for EETD research papers, case studies, and a download...

379

Nuclear Energy Systems  

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

Role of Synchrotron Radiation in Solving Scientific Challenges in Advanced Nuclear Energy Systems 27 to 28 January 2010 at Argonne's Advanced Photon Source Scope Third-generation...

380

Radioisotope Power Systems  

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

into finished metal shapes by extrusion, rolling, forming, machining, assembly, and welding. Nondestructive testing and quality systems are employed throughout the process to...

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Technology reviews: Lighting systems  

SciTech Connect

We present a representative review of existing, emerging, and future technology options in each of five hardware and systems areas in envelope and lighting technologies: lighting systems, glazing systems, shading systems, daylighting optical systems, and dynamic curtain wall systems. The term technology is used here to describe any design choice for energy efficiency, ranging from individual components to more complex systems to general design strategies. The purpose of this task is to characterize lighting system in the state of the art in envelope and lighting technologies in order to identify those with promise for advanced integrated systems, with an emphasis on California commercial buildings. For each technology category, the following activities have been attempted to the extent possible: Identify key performance characteristics and criteria for each technology. Determine the performance range of available technologies. Identify the most promising technologies and promising trends in technology advances. Examine market forces and market trends. Develop a continuously growing in-house database to be used throughout the project. A variety of information sources have been used in these technology characterizations, including miscellaneous periodicals, manufacturer catalogs and cut sheets, other research documents, and data from previous computer simulations. We include these different sources in order to best show the type and variety of data available, however publication here does not imply our guarantee of these data. Within each category, several broad classes are identified, and within each class we examine the generic individual technologies that fall into that class.

Schuman, J.; Rubinstein, F.; Papamichael, K.; Beltran, L.; Lee, E.S.; Selkowitz, S.

1992-09-01T23:59:59.000Z

382

Benchmark Monitoring: Retired Systems  

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

Completed Batch Jobs Completed Parallel Jobs Usage Reports Hopper Benchmark Monitoring Edison Benchmark Monitoring Carver Benchmark Monitoring Benchmark Monitoring: Retired Systems...

383

Edison Systems Technology Documentation  

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

Technology Documentation Systems Technology Documentation Downloads CrayXC30Networking.pdf | Adobe Acrobat PDF file Cray XC30 Networking SonexionBrochure.pdf | Adobe Acrobat PDF...

384

Blast Effects Suppression System  

The HydroSuppressor system was developed to protect critical facilities from the devastating effects of blast from a vehicle bomb. HydroSuppressor ...

385

Remote Systems Design & Deployment  

Science Conference Proceedings (OSTI)

The Pacific Northwest National Laboratory (PNNL) was tasked by Washington River Protection Solutions, LLC (WRPS) to provide information and lessons learned relating to the design, development and deployment of remote systems, particularly remote arm/manipulator systems. This report reflects PNNLs experience with remote systems and lays out the most important activities that need to be completed to successfully design, build, deploy and operate remote systems in radioactive and chemically contaminated environments. It also contains lessons learned from PNNLs work experiences, and the work of others in the national laboratory complex.

Bailey, Sharon A.; Baker, Carl P.; Valdez, Patrick LJ

2009-08-28T23:59:59.000Z

386

The Epicure Control System  

SciTech Connect

The Epicure Control System supports the Fermilab fixed target physics program. The system is distributed across a network of many different types of components. The use of multiple layers on interfaces for communication between logical tasks fits the client-server model. Physical devices are read and controlled using symbolic references entered into a database with an editor utility. The database system consists of a central portion containing all device information and optimized portions distributed among many nodes. Updates to the database are available throughout the system within minutes after being requested.

Dambik, E.; Kline, D.; West, R.

1993-09-01T23:59:59.000Z

387

Intelligent Transport Systems  

E-Print Network (OSTI)

in Sustainable Urban Transport: City Interview Synthesis (of Leeds, Institute for Transport Studies, forthcoming.I NTELLIGENT TRANSPORT SYSTEMS LINKING TECHNOLOGY AND

Deakin, Elizabeth; Frick, Karen Trapenberg; Skabardonis, Alexander

2009-01-01T23:59:59.000Z

388

FCT Systems Analysis: Contacts  

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

Systems Analysis: Contacts on AddThis.com... Home Analysis Methodologies DOE H2A Analysis Scenario Analysis Quick Links Hydrogen Production Hydrogen Delivery Hydrogen Storage Fuel...

389

Energy Basics: Heating Systems  

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

of energy sources, including electricity, boilers, solar energy, and wood and pellet-fuel heating. Small Space Heaters Used when the main heating system is inadequate or when...

390

Laundry heat recovery system  

SciTech Connect

A laundry heat recovery system includes a heat exchanger associated with each dryer in the system, the heat exchanger being positioned within the exhaust system of the dryer. A controller responsive to the water temperature of the heat exchangers and the water storage for the washer selectively circulates the water through a closed loop system whereby the water within the exchangers is preheated by the associated dryers. By venting the exhaust air through the heat exchanger, the air is dehumidified to permit recirculation of the heated air into the dryer.

Alio, P.

1985-04-09T23:59:59.000Z

391

Solar powered desalination system  

E-Print Network (OSTI)

Fundamentals of Salt Water Desalination. New York: Elsevier,7. Lightbucket. Large scale desalination: is there enoughSystem for Seawater Desalination Plants. The Netherlands:

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

392

Precision volume measurement system.  

Science Conference Proceedings (OSTI)

A new precision volume measurement system based on a Kansas City Plant (KCP) design was built to support the volume measurement needs of the Gas Transfer Systems (GTS) department at Sandia National Labs (SNL) in California. An engineering study was undertaken to verify or refute KCP's claims of 0.5% accuracy. The study assesses the accuracy and precision of the system. The system uses the ideal gas law and precise pressure measurements (of low-pressure helium) in a temperature and computer controlled environment to ratio a known volume to an unknown volume.

Fischer, Erin E.; Shugard, Andrew D.

2004-11-01T23:59:59.000Z

393

Next generation CAT system  

E-Print Network (OSTI)

Two novel techniques for future CAT system are presented. Transmission descattering is a singleshot method to differentiate unscattered and scattered components of light transmission through a scattering material. ...

Kim, Jaewon, S.M. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

394

Lighting Systems Test Facilities  

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

Measurement equipment with light beam Lighting Systems Test Facilities NOTICE Due to the current lapse of federal funding, Berkeley Lab websites are accessible, but may not be...

395

Genomics and Systems Biology  

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

such as energy, agriculture, and environmental cleanup. Get Expertise Babetta Marrone Biofuels Program Manager Email Cheryl Kuske DOE BER Biological System Science Division...

396

Infrared Thermography Systems  

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

funds for Fiscal Year 2014. Title Infrared Thermography Systems Publication Type Book Chapter LBNL Report Number LBNL-46590 Year of Publication 2000 Authors Griffith, Brent...

397

Toyota production system.  

E-Print Network (OSTI)

??Background: There are various manufacturing methods and systems in automobile industries throughout the world. Of these, many practice lean manufacturing methods. The most effective and (more)

Vyas, Kewalkumar Chandrakant

2011-01-01T23:59:59.000Z

398

Deepwater drilling riser system  

Science Conference Proceedings (OSTI)

The principal focus of this paper is to discuss and summarize, from the manufacturer's perspective, the primary milestones in the development of the marine riser system used to drill in record water depths off the U.S. east coast. This riser system is unique in that it used advanced designs, material technology, and quality control to enable safe operation in water depths beyond the capability of conventional drilling riser systems. Experience and research have led to design improvements that are now being incorporated in new riser systems that have the potential of expanding the frontiers to increasingly deeper water.

Chastain, T.; Stone, D.

1986-08-01T23:59:59.000Z

399

Energy Management Systems  

E-Print Network (OSTI)

This presentation will address results from a pilot project with 10 chemical plants on energy management systems and the development of an energy efficiency plant certification program.

Ferland, K.

2007-01-01T23:59:59.000Z

400

Genomics and Systems Biology  

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

Genomics and Systems Biology LANL leads the world in computational finishing of microbial genomes Read caption + In 2013, Los Alamos scientist Richard Sayre and his team...

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Bearing Material Systems  

Science Conference Proceedings (OSTI)

Table 2   Single-metal bearing material systems...Bronze C C C D B 14 2 Electric motor bushings, home appliance bearings,

402

Manufacturing Systems Integration News  

Science Conference Proceedings (OSTI)

... NIST Cooperative Agreement with University of Maryland Supports Research on 21st Century Smart Systems Release Date: 10/13/2011 ...

2011-12-01T23:59:59.000Z

403

NREL: Systems Engineering - Workshops  

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

Workshops The Wind Energy Systems Engineering Workshop is a biennial workshop that invites speakers from academia, industry, and international research laboratories to discuss...

404

Lighting Group: Controls: Systems Integration  

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

Systems Integration Building Control Systems Integration Objective This research project investigates how diverse building control systems can be integrated to provide seamless...

405

Vehicle Technologies Office: Battery Systems  

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

Battery Systems to someone by E-mail Share Vehicle Technologies Office: Battery Systems on Facebook Tweet about Vehicle Technologies Office: Battery Systems on Twitter Bookmark...

406

ESP: A system utilization benchmark  

E-Print Network (OSTI)

ESP: A System Utilization Benchmark Adrian T. Wong, LeonidEffective System Performance (ESP) test, which is designedEffective System Performance (ESP) benchmark, which measures

Wong, Adrian T.; Oliker, Leonid; Kramer, William T.C.; Kaltz, Teresa L.; Bailey, David H.

2000-01-01T23:59:59.000Z

407

Advanced Manufacturing Office: Pump Systems  

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

Pump Systems on Twitter Bookmark Advanced Manufacturing Office: Pump Systems on Google Bookmark Advanced Manufacturing Office: Pump Systems on Delicious Rank Advanced...

408

Could the Work System Method Embrace Systems Concepts More Fully?  

Science Conference Proceedings (OSTI)

The work system method was developed iteratively with the overarching goal of helping business professionals understand IT-reliant systems in organizations. It uses general systems concepts selectively, and sometimes implicitly. For example, a work system ...

Steven Alter

2007-04-01T23:59:59.000Z

409

Monitoring system-of-systems requirements in multi product lines  

Science Conference Proceedings (OSTI)

[Context and motivation] Large-scale software-intensive systems are often considered as systems of systems comprising several interrelated product lines from which system variants are derived to meet the overall requirements. [Question/problem] ...

Thomas Klambauer, Gerald Holl, Paul Grnbacher

2013-04-01T23:59:59.000Z

410

Large File System Backup: NERSC Global File System Experience  

E-Print Network (OSTI)

Large File System Backup NERSC Global File System ExperienceNational Laboratory Abstract NERSCs Global File system (from all compute systems at NERSC, holds files and data from

Mokhtarani, Akbar

2008-01-01T23:59:59.000Z

411

PIA - Human Resources System/Payroll System | Department of Energy  

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

System PIA - Human Resources - Personal Information Change Request - Idaho National Engineering Laboratory PIA - INL SECURITY INFORMATION MANAGEMENT SYSTEM BUSINESS ENCLAVE...

412

NETL: Gasification Systems - Syngas Processing Systems  

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

Syngas Processing Systems Syngas Processing Systems Gasification Systems Syngas Processing Systems The various downstream uses of syngas require that most of the contaminants present in raw syngas be removed to very low levels prior to use. Many of these contaminants can contribute to erosion, corrosion, and loss of strength in gas turbine components, and can act as poisons to the catalysts often used in syngas conversion and utilization processes. These same contaminants include or result in regulated air pollutants such as SOx, NOx, particulates, and mercury and other trace metals, which must be removed to increasingly low levels to meet stringent regulatory limits on air emissions. Conventional methods for removing sulfur and other contaminants from syngas typically rely on chemical or physical absorption processes operating at low temperatures. However, after contaminant removal, the gas has to be reheated prior to its use in a gas turbine or other chemical synthesis process; in the case of downstream hydrogen production, additional steam needs to be added back to the syngas. These process swings adversely impact the plant's thermal efficiency and cost. Techno-economic analysis shows that gas-cleaning processes amenable to higher operating temperatures could significantly reduce this efficiency loss and improve the gasification plant's commercial viability. It is also critical that, while improving efficiency and reducing cost, the gas cleaning removes a wide variety of coal contaminants (including hydrogen sulfide, ammonia, hydrogen chloride, and carbonyl sulfide, as well as various forms of trace metals, including arsenic, mercury, selenium, and cadmium) to extremely low levels. Accordingly, the R&D approach in this area focuses on the development of high-efficiency processes that operate at moderate to high temperatures and provide multi-contaminant control to meet the highest environmental standards.

413

Type systems for dummies  

Science Conference Proceedings (OSTI)

We extend Pure Type Systems with a function turning each term M of type A into a dummy |M| of the same type (|.| is not an identity, in that M ? |M|). Intuitively, a dummy represents an unknown, canonical object of the given type: dummies are opaque ... Keywords: canonical element, proof irrelevance, pure type system

Andrea Asperti; Ferruccio Guidi

2012-01-01T23:59:59.000Z

414

Fault-Tolerant Systems  

Science Conference Proceedings (OSTI)

There are many applications in which the reliability of the overall system must be far higher than the reliability of its individual components. In such cases, designers devise mechanisms and architectures that allow the system to either completely mask ... Keywords: Computer Architecture

Israel Koren; C. Mani Krishna

2007-03-01T23:59:59.000Z

415

Technology reviews: Shading systems  

SciTech Connect

We present a representative review of existing, emerging, and future technology options in each of five hardware and systems areas in envelope and lighting technologies: lighting systems, glazing systems, shading systems, daylighting optical systems, and dynamic curtain wall systems. The term technology is used here to describe any design choice for energy efficiency, ranging from individual components to more complex systems to general design strategies. The purpose of this task is to characterize the state of the art in envelope and lighting technologies in order to identify those with promise for advanced integrated systems, with an emphasis on California commercial buildings. For each technology category, the following activities have been attempted to the extent possible: Identify key performance characteristics and criteria for each technology. Determine the performance range of available technologies. Identify the most promising technologies and promising trends in technology advances. Examine market forces and market trends. Develop a continuously growing in-house database to be used throughout the project. A variety of information sources have been used in these technology characterizations, including miscellaneous periodicals, manufacturer catalogs and cut sheets, other research documents, and data from previous computer simulations. We include these different sources in order to best show the type and variety of data available, however publication here does not imply our guarantee of these data. Within each category, several broad classes are identified, and within each class we examine the generic individual technologies that fall into that class.

Schuman, J.; Rubinstein, F.; Papamichael, K.; Beltran, L.; Lee, E.S.; Selkowitz, S.

1992-09-01T23:59:59.000Z

416

Packaged CHP System Assessment  

Science Conference Proceedings (OSTI)

The Packaged CHP System Assessment report provides an analysis of packaged combined heat and power (CHP) systems. The report summarizes and compares the technical characteristics of commercial product lines with electric power output up to 3,000 kWe.

2004-03-22T23:59:59.000Z

417

Video communications system  

DOE Patents (OSTI)

A video communications system having at least one command network formed by a combination of subsystems to include a video subsystem, an audio subsystem, a communications subsystem, and a control subsystem. The video communications system to be window driven and mouse operated, and having the ability to allow for point-to-point real-time teleconferencing. 4 figs.

Smith, R.L.

1990-03-09T23:59:59.000Z

418

Secure video communications system  

DOE Patents (OSTI)

A secure video communications system having at least one command network formed by a combination of subsystems. The combination of subsystems to include a video subsystem, an audio subsystem, a communications subsystem, and a control subsystem. The video communications system to be window driven and mouse operated, and having the ability to allow for secure point-to-point real-time teleconferencing.

Smith, Robert L. (Idaho Falls, ID)

1991-01-01T23:59:59.000Z

419

Texas Tech University System  

E-Print Network (OSTI)

Texas Tech University System :: Huffaker Named as Texas Tech System General Counsel http://www.texastech.edu/stories/12-03-TTUS-Washington-DC-Trip.php[4/2/2012 8:13:27 AM] Chancellor Hance and leadership from the Texas visited with Texas Tech students and Congressional interns while in Washington, D.C. March 27, 2012 Texas

Rock, Chris

420

HAN System Security Requirements  

Science Conference Proceedings (OSTI)

This report, "Home Area Network (HAN) Security Requirements," identifies and discusses the key cyber security requirements for different interfaces of HAN-based systems. These cyber security requirements for HAN interfaces are derived from the Department of Homeland Security (DHS) "Catalog of Control Systems Security," which provides an excellent checklist of general security requirements.

2009-12-22T23:59:59.000Z

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Cognitive Aeronautical Communication System  

Science Conference Proceedings (OSTI)

The paper explores the system and architecture requirements for cognitive driven reconfigurable hardware for an aeronautical platform, such as commercial aircraft or high altitude platforms. With advances in components and processing hardware, mobile ... Keywords: Aeronautical Data Networks, Aeronautical Systems, Cognitive Data Networks, OFDM, Software Defined Radio

M. Erturk; Huseyin Arslan; Jamal Haque; Wilfrido Moreno

2011-01-01T23:59:59.000Z

422

Olympic voting system proposal  

Science Conference Proceedings (OSTI)

In an effort to address the contentious issue of judged Olympic events, the Olympic committee has proposed a pilot audience participation system to score the gymnastics and diving competitions in the upcoming 2004 Athens Summer Games. The system would ... Keywords: Olympics usability, audience, design methodology, ergonomics, industrial design, interaction design, interactive, interface, voting

Seamus Costello; Kari Kubala; Matt Turley; Mehmet Uzer

2004-04-01T23:59:59.000Z

423

Flue Gas Desulfurization Systems  

Science Conference Proceedings (OSTI)

In many of the operating flue gas desulfurization (FGD) systems throughout the world, materials corrosion leads to considerable costs and downtime. Utilities are often required to maintain, repair, replace, and/or upgrade existing materials to combat corrosion issues. This document provides the results of a recent EPRI survey that examined the various types of corrosion and materials damage in FGD systems.

2005-12-23T23:59:59.000Z

424

Portable modular detection system  

Science Conference Proceedings (OSTI)

Disclosed herein are portable and modular detection devices and systems for detecting electromagnetic radiation, such as fluorescence, from an analyte which comprises at least one optical element removably attached to at least one alignment rail. Also disclosed are modular detection devices and systems having an integrated lock-in amplifier and spatial filter and assay methods using the portable and modular detection devices.

Brennan, James S. (Rodeo, CA); Singh, Anup (Danville, CA); Throckmorton, Daniel J. (Tracy, CA); Stamps, James F. (Livermore, CA)

2009-10-13T23:59:59.000Z

425

Purge water management system  

DOE Patents (OSTI)

A purge water management system for effectively eliminating the production of purge water when obtaining a groundwater sample from a monitoring well. In its preferred embodiment, the purge water management system comprises an expandable container, a transportation system, and a return system. The purge water management system is connected to a wellhead sampling configuration, typically permanently installed at the well site. A pump, positioned with the monitoring well, pumps groundwater through the transportation system into the expandable container, which expands in direct proportion with volume of groundwater introduced, usually three or four well volumes, yet prevents the groundwater from coming into contact with the oxygen in the air. After this quantity of groundwater has been removed from the well, a sample is taken from a sampling port, after which the groundwater in the expandable container can be returned to the monitoring well through the return system. The purge water management system prevents the purge water from coming in contact with the outside environment, especially oxygen, which might cause the constituents of the groundwater to oxidize. Therefore, by introducing the purge water back into the monitoring well, the necessity of dealing with the purge water as a hazardous waste under the Resource Conservation and Recovery Act is eliminated.

Cardoso-Neto, Joao E. (North Augusta, SC); Williams, Daniel W. (Aiken, SC)

1996-01-01T23:59:59.000Z

426

Purge water management system  

DOE Patents (OSTI)

A purge water management system is described for effectively eliminating the production of purge water when obtaining a groundwater sample from a monitoring well. In its preferred embodiment, the purge water management system comprises an expandable container, a transportation system, and a return system. The purge water management system is connected to a wellhead sampling configuration, typically permanently installed at the well site. A pump, positioned with the monitoring well, pumps groundwater through the transportation system into the expandable container, which expands in direct proportion with volume of groundwater introduced, usually three or four well volumes, yet prevents the groundwater from coming into contact with the oxygen in the air. After this quantity of groundwater has been removed from the well, a sample is taken from a sampling port, after which the groundwater in the expandable container can be returned to the monitoring well through the return system. The purge water management system prevents the purge water from coming in contact with the outside environment, especially oxygen, which might cause the constituents of the groundwater to oxidize. Therefore, by introducing the purge water back into the monitoring well, the necessity of dealing with the purge water as a hazardous waste under the Resource Conservation and Recovery Act is eliminated.

Cardoso-Neto, J.E.; Williams, D.W.

1995-01-01T23:59:59.000Z

427

Systems Integration (Fact Sheet)  

DOE Green Energy (OSTI)

The Systems Integration (SI) subprogram works closely with industry, universities, and the national laboratories to overcome technical barriers to the large-scale deployment of solar technologies. To support these goals, the subprogram invests primarily in four areas: grid integration, technology validation, solar resource assessment, and balance of system development.

Not Available

2011-10-01T23:59:59.000Z

428

Radiation detection system  

SciTech Connect

A radiation detection system including a radiation-to-light converter and fiber optic wave guides to transmit the light to a remote location for processing. The system utilizes fluors particularly developed for use with optical fibers emitting at wavelengths greater than about 500 nm and having decay times less than about 10 ns.

Franks, Larry A. (Santa Barbara, CA); Lutz, Stephen S. (Santa Barbara, CA); Lyons, Peter B. (Los Alamos, NM)

1981-01-01T23:59:59.000Z

429

Environmental geographic information system.  

Science Conference Proceedings (OSTI)

This document describes how the Environmental Geographic Information System (EGIS) was used, along with externally received data, to create maps for the Site-Wide Environmental Impact Statement (SWEIS) Source Document project. Data quality among the various classes of geographic information system (GIS) data is addressed. A complete listing of map layers used is provided.

Peek, Dennis; Helfrich, Donald Alan; Gorman, Susan

2010-08-01T23:59:59.000Z

430

Overview of locking systems  

Science Conference Proceedings (OSTI)

The purpose of this document is to present technical information that should be useful for understanding and applying locking systems for physical protection and control. There are major sections on hardware for locks, vaults, safes, and security containers. Other topics include management of lock systems and safety considerations. This document also contains notes on standards and specifications and a glossary.

Gee, K.T.; Scott, S.H.; Wilde, M.G. [Sandia National Labs., Albuquerque, NM (United States); Highland, S.E. [Albuquerque Safe Co., Albuquerque, NM (United States)

1993-12-01T23:59:59.000Z

431

Designing creative artificial systems  

Science Conference Proceedings (OSTI)

Can artificial systems be creative? Can they be designed to be creative on their own? What are the requirements of such creative artificial systems? To be able to support humans who are expected to deliver creative solutions, or to automate part of their ... Keywords: Agent, Creativity, Design, Interactivity, Learning, Self-Organization

Pieter H. G. Van Langen; Niek J. E. Wijngaards; Frances M. T. Brazier

2004-06-01T23:59:59.000Z

432

Fuzzy Systems in Biomedicine  

Science Conference Proceedings (OSTI)

The chapter presents recent advances of fuzzy systems in biomedicine. A short introduction is made on the main concepts of fuzzy sets theory. Then, a survey of recent research reports (2000 and beyond) is performed, in order to map existing theoretical ... Keywords: Biomedicine, Fuzzy Systems, Survey

Georgios Dounias

2007-06-01T23:59:59.000Z

433

Technology reviews: Glazing systems  

SciTech Connect

We present a representative review of existing, emerging, and future technology options in each of five hardware and systems areas in envelope and lighting technologies: lighting systems, glazing systems, shading systems, daylighting optical systems, and dynamic curtain wall systems. The term technology is used here to describe any design choice for energy efficiency, ranging from individual components to more complex systems to general design strategies. The purpose of this task is to characterize the state of the art in envelope and lighting technologies in order to identify those with promise for advanced integrated systems, with an emphasis on California commercial buildings. For each technology category, the following activities have been attempted to the extent possible: Identify key performance characteristics and criteria for each technology; determine the performance range of available technologies; identify the most promising technologies and promising trends in technology advances; examine market forces and market trends; and develop a continuously growing in-house database to be used throughout the project. A variety of information sources have been used in these technology characterizations, including miscellaneous periodicals, manufacturer catalogs and cut sheets, other research documents, and data from previous computer simulations. We include these different sources in order to best show the type and variety of data available, however publication here does not imply our guarantee of these data. Within each category, several broad classes are identified, and within each class we examine the generic individual technologies that fag into that class.

Schuman, J.; Rubinstein, F.; Papamichael, K.; Beltran, L.; Lee, E.S.; Selkowitz, S.

1992-09-01T23:59:59.000Z

434

Heavy Vehicle Systems  

Science Conference Proceedings (OSTI)

Heavy Vehicle (HV) systems are a necessary component of achieving OHVT goals. Elements are in place for a far-ranging program: short, intermediate, and long-term. Solicitation will bring industrial input and support. Future funding trend is positive, outlook for HV systems is good.

Sid Diamond; Richard Wares; Jules Routbort

2000-04-11T23:59:59.000Z

435

Heterodyne laser diagnostic system  

DOE Patents (OSTI)

The heterodyne laser diagnostic system includes, in one embodiment, an average power pulsed laser optical spectrum analyzer for determining the average power of the pulsed laser. In another embodiment, the system includes a pulsed laser instantaneous optical frequency measurement for determining the instantaneous optical frequency of the pulsed laser.

Globig, Michael A. (Antioch, CA); Johnson, Michael A. (Pleasanton, CA); Wyeth, Richard W. (Livermore, CA)

1990-01-01T23:59:59.000Z

436

Modular Integrated Energy Systems  

E-Print Network (OSTI)

energy system (or CHP -- Cooling, Heat and Power) system at Ft. Bragg. Much of this work is funded fired absorption chiller. The key goals of the project are: · Develop a set of "reference" CAD-based IES a 1000 Ton exhaust-driven absorption chiller, · Install and monitor the performance of a prototype IES

Oak Ridge National Laboratory

437

Quantum Spin Systems  

E-Print Network (OSTI)

This article is a short introduction to the general topic of quantum spin systems. After a brief sketch of the history of the subject, the standard mathematical framework for formulating problems and results in quantum spin systems is described. Then, three short sections are devoted to Spontaneaous Symmetry Breaking, Phase transitions, and Dynamcis.

Bruno Nachtergaele

2004-09-02T23:59:59.000Z

438

Plant Phenotype Characterization System  

DOE Green Energy (OSTI)

This report is the final scientific report for the DOE Inventions and Innovations Project: Plant Phenotype Characterization System, DE-FG36-04GO14334. The period of performance was September 30, 2004 through July 15, 2005. The project objective is to demonstrate the viability of a new scientific instrument concept for the study of plant root systems. The root systems of plants are thought to be important in plant yield and thus important to DOE goals in renewable energy sources. The scientific study and understanding of plant root systems is hampered by the difficulty in observing root activity and the inadequacy of existing root study instrumentation options. We have demonstrated a high throughput, non-invasive, high resolution technique for visualizing plant root systems in-situ. Our approach is based upon low-energy x-ray radiography and the use of containers and substrates (artificial soil) which are virtually transparent to x-rays. The system allows us to germinate and grow plant specimens in our containers and substrates and to generate x-ray images of the developing root system over time. The same plant can be imaged at different times in its development. The system can be used for root studies in plant physiology, plant morphology, plant breeding, plant functional genomics and plant genotype screening.

Daniel W McDonald; Ronald B Michaels

2005-09-09T23:59:59.000Z

439

Environmental Management System Plan  

E-Print Network (OSTI)

offices, the EMS Program Program Elements Environmental ManagementOffice of Institutional Assurance as stated in the OQMP. 3-7 Environmental ManagementEnvironmental Management System Fiscal Year Improve (EMP classification) Integrated Safety Management System International Organization for Standardization Lawrence Berkeley National Laboratory Office

Fox, Robert

2009-01-01T23:59:59.000Z

440

Human-system Interfaces for Automatic Systems  

SciTech Connect

Automation is ubiquitous in modern complex systems, and commercial nuclear- power plants are no exception. Automation is applied to a wide range of functions including monitoring and detection, situation assessment, response planning, and response implementation. Automation has become a 'team player' supporting personnel in nearly all aspects of system operation. In light of its increasing use and importance in new- and future-plants, guidance is needed to conduct safety reviews of the operator's interface with automation. The objective of this research was to develop such guidance. We first characterized the important HFE aspects of automation, including six dimensions: levels, functions, processes, modes, flexibility, and reliability. Next, we reviewed literature on the effects of all of these aspects of automation on human performance, and on the design of human-system interfaces (HSIs). Then, we used this technical basis established from the literature to identify general principles for human-automation interaction and to develop review guidelines. The guidelines consist of the following seven topics: automation displays, interaction and control, automation modes, automation levels, adaptive automation, error tolerance and failure management, and HSI integration. In addition, our study identified several topics for additional research.

OHara, J.M.; Higgins,J. (BNL); Fleger, S.; Barnes V. (NRC)

2010-11-07T23:59:59.000Z

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

Safety System Oversight  

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

Safety System Oversight Safety System Oversight Office of Nuclear Safety Home Safety System Oversight Home Annual SSO/FR Workshop DOE Safety Links › ORPS Info › Operating Experience Summary › DOE Lessons Learned › Accident Investigation Program Assessment Tools › SSO CRADS Subject Matter Links General Program Information › Program Mission Statement › SSO Program Description › SSO Annual Award Program › SSO Annual Award › SSO Steering Committee › SSO Program Assessment CRAD SSO Logo Items Site Leads and Steering Committee Archive Facility Representative Contact Us HSS Logo SSO SSO Program News Congratulations to Ronnie L. Alderson of Nevada Field Office, the Winner of the 2012 Safety System Oversight Annual Award! 2012 Safety System Oversight Annual Award Nominees SSO Staffing Analysis

442

Electrochemical thermodynamic measurement system  

DOE Patents (OSTI)

The present invention provides systems and methods for accurately characterizing thermodynamic and materials properties of electrodes and electrochemical energy storage and conversion systems. Systems and methods of the present invention are configured for simultaneously collecting a suite of measurements characterizing a plurality of interconnected electrochemical and thermodynamic parameters relating to the electrode reaction state of advancement, voltage and temperature. Enhanced sensitivity provided by the present methods and systems combined with measurement conditions that reflect thermodynamically stabilized electrode conditions allow very accurate measurement of thermodynamic parameters, including state functions such as the Gibbs free energy, enthalpy and entropy of electrode/electrochemical cell reactions, that enable prediction of important performance attributes of electrode materials and electrochemical systems, such as the energy, power density, current rate and the cycle life of an electrochemical cell.

Reynier, Yvan (Meylan, FR); Yazami, Rachid (Los Angeles, CA); Fultz, Brent T. (Pasadena, CA)

2009-09-29T23:59:59.000Z

443

CEBAF cryogenic system  

SciTech Connect

The CEBAF cryogenic system consists of 3 refrigeration systems: Cryogenic Test Facility (CTF), Central Helium Liquefier (CHL), and End Station Refrigerator (ESR). CHL is the main cryogenic system for CEBAF, consisting of a 4.8 kW, 2.0 K refrigerator and transfer line system to supply 2.0 K and 12 kW of 50 K shield refrigeration for the Linac cavity cryostats and 10 g/s of liquid for the end stations. This paper describes the 9-year effort to commission these systems, concentrating on CHL with the cold compressors. The cold compressors are a cold vacuum pump with an inlet temperature of 3 K which use magnetic bearings, thereby eliminating the possibility of air leaks into the subatmospheric He.

NONE

1995-12-31T23:59:59.000Z

444

Traction Drive Systems Breakout  

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

Traction Drive Systems Breakout Traction Drive Systems Breakout John M. Miller, PhD, PE, F.IEEE, F.SAE Oak Ridge National Laboratory Facilitator July 24, 2012 EV Everywhere Grand Challenge Vehicle Technologies Program - Advanced Power Electronics and Electric Motors eere.energy.gov EV Everywhere Traction Drive System * DOE goals for Electric Traction Drive System (TDS) innovations must be disruptive innovation focused to meet the CY2022 price target ($20,000 $25,000) for a mid-sized 5 passenger sedan having 5 year simple payback. Enhanced Efficiency Reduced Cost Traction Drive System EETT Roadmap: "Therefore, research is needed to develop technologies that are less expensive and, at the same time, smaller, lighter, more efficient, and equally reliable as conventional automotive technologies. "

445

Business System Management Review  

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

P-004 Business System Management Review Process 11_0304Page 1 of 7 P-004 Business System Management Review Process 11_0304Page 1 of 7 EOTA - Business Process Document Title: Business System Management Review Process Document Number: P-004 Rev 11_0304 Document Owner: Elizabeth Sousa Backup Owner: Melissa Otero Approver(s): Melissa Otero Parent Document: Q-001, Quality Manual Notify of Changes: EOTA Employees Referenced Document(s): F-009, Business System Management Review Template P-004 Business System Management Review Process 11_0304Page 2 of 7 Revision History: Rev. Description of Change A Initial Release 08_0414 Corrective Actions, Preventive Actions, and Improvement Opportunity 09_1124 Edited document for clarity and to better fit the process in use. Added requirement to provide management with

446

Basic fluid system trainer  

DOE Patents (OSTI)

This invention, a trainer mounted and housed within a mobile console, is used to teach and reinforce fluid principles to students. The system trainer has two centrifugal pumps, each driven by a corresponding two-speed electric motor. The motors are controlled by motor controllers for operating the pumps to circulate the fluid stored within a supply tank through a closed system. The pumps may be connected in series or in parallel. A number of valves are also included within the system to effect different flow paths for the fluid. In addition, temperature and pressure sensing instruments are installed throughout the closed system for measuring the characteristics of the fluid, as it passes through the different valves and pumps. These measurements are indicated on a front panel mounted to the console, as a teaching aid, to allow the students to observe the characteristics of the system.

Semans, J.P.; Johnson, P.G.; LeBoeuf, R.F. Jr.; Kromka, J.A.; Goron, R.H.; Hay, G.D.

1991-04-30T23:59:59.000Z

447

Data acquisition system  

DOE Patents (OSTI)

A data acquisition circuit for a particle detection system that allows for time tagging of particles detected by the system. The particle detection system screens out background noise and discriminate between hits from scattered and unscattered particles. The detection system can also be adapted to detect a wide variety of particle types. The detection system utilizes a particle detection pixel array, each pixel containing a back-biased PIN diode, and a data acquisition pixel array. Each pixel in the particle detection pixel array is in electrical contact with a pixel in the data acquisition pixel array. In response to a particle hit, the affected PIN diodes generate a current, which is detected by the corresponding data acquisition pixels. This current is integrated to produce a voltage across a capacitor, the voltage being related to the amount of energy deposited in the pixel by the particle. The current is also used to trigger a read of the pixel hit by the particle.

Shapiro, Stephen L. (14228 Amherst Ct., Los Altos Hills, CA 94022); Mani, Sudhindra (1618 17th St., Sacramento, CA 95814); Atlas, Eugene L. (440 De Anza Ct., Oceanside, CA 92057); Cords, Dieter H. W. (526 Cuesta Real, La Honda, CA 94020); Holbrook, Britt (4540 Varsity Ct., Sacramento, CA 95841)

1997-01-01T23:59:59.000Z

448

Adsorption Refrigeration System  

SciTech Connect

Adsorption refrigeration is an environmentally friendly cooling technology which could be driven by recovered waste heat or low-grade heat such as solar energy. In comparison with absorption system, an adsorption system has no problems such as corrosion at high temperature and salt crystallization. In comparison with vapor compression refrigeration system, it has the advantages of simple control, no moving parts and less noise. This paper introduces the basic theory of adsorption cycle as well as the advanced adsorption cycles such as heat and mass recovery cycle, thermal wave cycle and convection thermal wave cycle. The types, characteristics, advantages and drawbacks of different adsorbents used in adsorption refrigeration systems are also summarized. This article will increase the awareness of this emerging cooling technology among the HVAC engineers and help them select appropriate adsorption systems in energy-efficient building design.

Wang, Kai [ORNL; Vineyard, Edward Allan [ORNL

2011-01-01T23:59:59.000Z

449

Basic fluid system trainer  

DOE Patents (OSTI)

A trainer, mounted and housed within a mobile console, is used to teach and reinforce fluid principles to students. The system trainer has two centrifugal pumps, each driven by a corresponding two-speed electric motor. The motors are controlled by motor controllers for operating the pumps to circulate the fluid stored within a supply tank through a closed system. The pumps may be connected in series or in parallel. A number of valves are also included within the system to effect different flow paths for the fluid. In addition, temperature and pressure sensing instruments are installed throughout the closed system for measuring the characteristics of the fluid, as it passes through the different valves and pumps. These measurements are indicated on a front panel mounted to the console, as a teaching aid, to allow the students to observe the characteristics of the system.

Semans, Joseph P. (Uniontown, PA); Johnson, Peter G. (Pittsburgh, PA); LeBoeuf, Jr., Robert F. (Clairton, PA); Kromka, Joseph A. (Idaho Falls, ID); Goron, Ronald H. (Connellsville, PA); Hay, George D. (Venetia, PA)

1993-01-01T23:59:59.000Z

450

Transportation System Requirements Document  

SciTech Connect

This Transportation System Requirements Document (Trans-SRD) describes the functions to be performed by and the technical requirements for the Transportation System to transport spent nuclear fuel (SNF) and high-level radioactive waste (HLW) from Purchaser and Producer sites to a Civilian Radioactive Waste Management System (CRWMS) site, and between CRWMS sites. The purpose of this document is to define the system-level requirements for Transportation consistent with the CRWMS Requirement Document (CRD). These requirements include design and operations requirements to the extent they impact on the development of the physical segments of Transportation. The document also presents an overall description of Transportation, its functions, its segments, and the requirements allocated to the segments and the system-level interfaces with Transportation. The interface identification and description are published in the CRWMS Interface Specification.

1993-09-01T23:59:59.000Z

451

Balance-of-System Equipment Required for Renewable Energy Systems |  

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

Balance-of-System Equipment Required for Renewable Energy Systems Balance-of-System Equipment Required for Renewable Energy Systems Balance-of-System Equipment Required for Renewable Energy Systems July 2, 2012 - 8:21pm Addthis Both grid-connected and off-grid home renewable energy systems require additional “balance-of-system” equipment. Both grid-connected and off-grid home renewable energy systems require additional "balance-of-system" equipment. How does it work? With a stand-alone system, depending on your needs, balance-of-system equipment could account for half of your total system costs. For both stand-alone and grid-connect systems, you will need power conditioning equipment, safety equipment, and meters and instrumentation. For stand-alone systems, you will also want batteries and charge controllers.

452

Solar hot water system update  

DOE Green Energy (OSTI)

Brief descriptions are given of the following three systems: (1) thermosyphon system, (2) system with drain-down freeze protection, and (3) system with antifreeze as freeze protection. (MOW)

Levary, A.

1978-01-01T23:59:59.000Z

453

EIA 176 Query System, 2003  

Annual Energy Outlook 2012 (EIA)

3 EIA Home > Natural Gas > Natural Gas Data Publications EIA 176 Query System 2003 The EIA-176 Query System is a Windows-based system which runs under Windows operating systems 95,...

454

EIA 176 Query System, 2001  

Gasoline and Diesel Fuel Update (EIA)

1 EIA Home > Natural Gas > Natural Gas Data Publications EIA 176 Query System 2001 The EIA-176 Query system is a Windows-based system which runs under Windows operating systems 95,...

455

EIA 176 Query System, 2004  

Gasoline and Diesel Fuel Update (EIA)

4 EIA Home > Natural Gas > Natural Gas Data Publications EIA 176 Query System 2004 The EIA-176 Query System is a Windows-based system which runs under Windows operating systems 95,...

456

Flywheel Power Systems: Market Analysis  

Science Conference Proceedings (OSTI)

High speed flywheel power systems offer a new opportunity to provide power delivery systems. Such systems are very useful to mitigate power quality problems. This report focuses on the industrial market for flywheel storage systems.

1998-02-20T23:59:59.000Z

457

Cognition and Collaboration Systems Group  

Science Conference Proceedings (OSTI)

... to fully autonomous behaviors; develop modeling and simulation techniques for intelligent systems; and enable intelligent cyber-physical systems. ...

2012-08-30T23:59:59.000Z

458

Advanced Integrated Systems Technology Development  

E-Print Network (OSTI)

Research Energy Systems Integration Environmentallyenergy use, combined with the capability of the BMS system, including alarms to identify anomalies. Integration

2013-01-01T23:59:59.000Z

459

The web of system performance  

Science Conference Proceedings (OSTI)

Because information system performance is multidimensional, specialist theories of performance dimensions must be integrated into a model of system design.

Brian Whitworth; Jerry Fjermestad; Edward Mahinda

2006-05-01T23:59:59.000Z

460

Identity Management Systems Program Homepage  

Science Conference Proceedings (OSTI)

Identity Management Systems Program. ... Identity management systems are responsible for the creation, use, and termination of electronic identities. ...

2010-10-05T23:59:59.000Z

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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

System Testing using UML Models  

Science Conference Proceedings (OSTI)

Coverage of system states during system testing is a nontrivial problem. It is because the number of system states is usually very large, and system developers often do not construct system state model. In this paper, we propose a method to design system ...

Monalisa Sarma; Rajib Mall

2007-10-01T23:59:59.000Z

462

Medical imaging systems  

DOE Patents (OSTI)

A medical imaging system provides simultaneous rendering of visible light and fluorescent images. The system may employ dyes in a small-molecule form that remains in a subject's blood stream for several minutes, allowing real-time imaging of the subject's circulatory system superimposed upon a conventional, visible light image of the subject. The system may also employ dyes or other fluorescent substances associated with antibodies, antibody fragments, or ligands that accumulate within a region of diagnostic significance. In one embodiment, the system provides an excitation light source to excite the fluorescent substance and a visible light source for general illumination within the same optical guide that is used to capture images. In another embodiment, the system is configured for use in open surgical procedures by providing an operating area that is closed to ambient light. More broadly, the systems described herein may be used in imaging applications where a visible light image may be usefully supplemented by an image formed from fluorescent emissions from a fluorescent substance that marks areas of functional interest.

Frangioni, John V. (Wayland, MA)

2012-07-24T23:59:59.000Z

463

Advanced turbine systems program  

SciTech Connect

In accordance with the goals of the DOE program, improvements in the gas turbine are the primary focus of Allison activity during Phase I. To this end Allison conducted a survey of potentially applicable gas turbine cycles and selected the advanced combined cycle as reference system. Extensive analysis of two versions of the advanced combined cycle was performed against the requirement for a 60% thermal efficiency (LHV) utility-sized, natural gas fired system. This analysis resulted in technology requirements for this system. Additional analysis determined emissions potential for the system, established a coal-fueled derivative system and a commercialization plan. This report deals with the technical requirements for a system that meets the thermal efficiency goal. Allison initially investigated four basic thermodynamic cycles: Humid air turbine, intercalate-recuperated systems, advanced combined cycle, chemically recuperated cycle. Our survey and cycle analysis indicated that au had the potential of reaching 60% thermal efficiency. We also concluded that engine hot section technology would be a critical technology regardless of which cycle was chosen. Based on this result Allison chose to concentrate on the advanced combined cycle. This cycle is well known and understood by the utility turbine user community and is therefore likely to be acceptable to users.

Wilkes, C.; Mukavetz, D.W.; Knickerbocker, T.K.; Ali, S.A.

1992-12-31T23:59:59.000Z

464

Advanced turbine systems program  

SciTech Connect

In accordance with the goals of the DOE program, improvements in the gas turbine are the primary focus of Allison activity during Phase I. To this end Allison conducted a survey of potentially applicable gas turbine cycles and selected the advanced combined cycle as reference system. Extensive analysis of two versions of the advanced combined cycle was performed against the requirement for a 60% thermal efficiency (LHV) utility-sized, natural gas fired system. This analysis resulted in technology requirements for this system. Additional analysis determined emissions potential for the system, established a coal-fueled derivative system and a commercialization plan. This report deals with the technical requirements for a system that meets the thermal efficiency goal. Allison initially investigated four basic thermodynamic cycles: Humid air turbine, intercalate-recuperated systems, advanced combined cycle, chemically recuperated cycle. Our survey and cycle analysis indicated that au had the potential of reaching 60% thermal efficiency. We also concluded that engine hot section technology would be a critical technology regardless of which cycle was chosen. Based on this result Allison chose to concentrate on the advanced combined cycle. This cycle is well known and understood by the utility turbine user community and is therefore likely to be acceptable to users.

Wilkes, C.; Mukavetz, D.W.; Knickerbocker, T.K.; Ali, S.A.

1992-01-01T23:59:59.000Z

465

Systems Integration Methodology  

Science Conference Proceedings (OSTI)

A multi-disciplinary team led by the Advanced Power and Energy Program (APEP) of the University of California at Irvine is defining the system engineering issues associated with the integration of key components and subsystems into power plant systems that meet performance and emission goals of VISION 21. The myriad of fuels, fuel processing, power generation, and emission control technologies are narrowed down to selected scenarios by a screening analysis to identify those combinations that have the potential to achieve the VISION 21 goals consisting of 60% efficiency (HHV) for coal based systems and 75% efficiency (LHV) for gas-based systems. The selected promising cycle scenarios are then analyzed in detail to develop the performance and costs for each. The methodology used in arriving at these promising cases and the preliminary results of the cycle analyses are presented. The technology levels considered are based on projected technical and manufacturing advances being made in industry and on advances identified in current and future government supported research such as the Clean Coal Program, Combustion 2000 (LEBS and HIPPS), Advanced Turbine Systems program, Low-Cost Advanced Fuel Cell programs, and the Flexible Gas Turbine Systems program. Examples of systems included in these advanced cycles are solid oxide and molten carbonate fuel cells, advanced gas turbines, ion transport membrane separation and hydrogen-oxygen combustion.

Samuelsen, Scott; Rao, Ashok

2001-11-06T23:59:59.000Z

466

Battery management system  

SciTech Connect

A battery management system is described, comprising: a main battery; main battery charging system means coupled to the main battery for charging the main battery during operation of the main battery charging system means; at least one auxiliary battery; primary switching means for coupling the auxiliary battery to a parallel configuration with the main battery charging system means and with the main battery, where upon both the main battery and the auxiliary battery are charged by the main battery charging system means, the primary switching means also being operable to decouple the auxiliary battery from the parallel configuration; and sensing means coupled to the primary switching means and operable to sense presence or absence of charging current from the main battery charging system means to the main battery, the sensing means being operable to activate the switching means for coupling the auxiliary battery into the parallel configuration during presence of the charging current, wherein the main battery charging system provides a charging signal to the main battery having an alternating current component, and wherein the sensing means includes transformer means coupled to the charging signal for inducing a voltage, the voltage being applied to a switching circuit of the switching means.

Albright, C.D.

1993-07-06T23:59:59.000Z

467

Cody hydrothermal system  

DOE Green Energy (OSTI)

The hot springs of Colter's Hell are the surface manifestations of a much larger hydothermal system. That system has been studied to define its extent, maximum temperature, and mechanism of operation. The study area covers 2700 km/sup 2/ (1040 mi/sup 2/) in northwest Wyoming. Research and field work included locating and sampling the hot springs, geologic mapping, thermal logging of available wells, measuring thermal conductivities, analyzing over 200 oil and gas well bottom-hole temperatures, and compiling and analyzing hydrologic data. These data were used to generate a model for the hydrothermal system.

Heasler, H.P.

1982-01-01T23:59:59.000Z

468

Power management system  

DOE Patents (OSTI)

A method of managing power resources for an electrical system of a vehicle may include identifying enabled power sources from among a plurality of power sources in electrical communication with the electrical system and calculating a threshold power value for the enabled power sources. A total power load placed on the electrical system by one or more power consumers may be measured. If the total power load exceeds the threshold power value, then a determination may be made as to whether one or more additional power sources is available from among the plurality of power sources. At least one of the one or more additional power sources may be enabled, if available.

Algrain, Marcelo C. (Peoria, IL); Johnson, Kris W. (Washington, IL); Akasam, Sivaprasad (Peoria, IL); Hoff, Brian D. (East Peoria, IL)

2007-10-02T23:59:59.000Z

469

Photovoltaic system reliability  

SciTech Connect

This paper discusses the reliability of several photovoltaic projects including SMUD`s PV Pioneer project, various projects monitored by Ascension Technology, and the Colorado Parks project. System times-to-failure range from 1 to 16 years, and maintenance costs range from 1 to 16 cents per kilowatt-hour. Factors contributing to the reliability of these systems are discussed, and practices are recommended that can be applied to future projects. This paper also discusses the methodology used to collect and analyze PV system reliability data.

Maish, A.B.; Atcitty, C. [Sandia National Labs., NM (United States); Greenberg, D. [Ascension Technology, Inc., Lincoln Center, MA (United States)] [and others

1997-10-01T23:59:59.000Z

470

Solar energy system  

SciTech Connect

A solar energy system is described for selectively absorbing or reflecting radiant energy entering through a window of a structure, the system comprising a window drape having a decorative side and a back side, and a removable liner adjacent the backside of the window drape. At least one side of the liner or window drape backside is a radiant energy reflecting surface and another of said sides is a radiant energy absorbing surface. Thus, depending upon the season of the year, the system may be arranged to selectively provide the appropriate surface to optimize or minimize the radiant energy maintained within the structure.

Mole, R.A.

1977-05-03T23:59:59.000Z

471

THE RHIC INJECTION SYSTEM.  

SciTech Connect

The RHIC injection system has to transport beam from the AGS-to-RHIC transfer line onto the closed orbits of the RHIC Blue and Yellow rings. This task can be divided into three problems. First, the beam has to be injected into either ring. Second, once injected the beam needs to be transported around the ring for one turn. Third, the orbit must be closed and coherent beam oscillations around the closed orbit should be minimized. We describe our solutions for these problems and report on system tests conducted during the RHIC Sextant test performed in 1997. The system will be fully commissioned in 1999.

FISCHER,W.; GLENN,J.W.; MACKAY,W.W.; PTITSIN,V.; ROBINSON,T.G.; TSOUPAS,N.

1999-03-29T23:59:59.000Z

472

Absorption heat pump system  

DOE Patents (OSTI)

An improvement in an absorption heat pump cycle is obtained by adding adiabatic absorption and desorption steps to the absorber and desorber of the system. The adiabatic processes make it possible to obtain the highest temperature in the absorber before any heat is removed from it and the lowest temperature in the desorber before heat is added to it, allowing for efficient utilization of the thermodynamic availability of the heat supply stream. The improved system can operate with a larger difference between high and low working fluid concentrations, less circulation losses, and more efficient heat exchange than a conventional system.

Grossman, Gershon (Oak Ridge, TN); Perez-Blanco, Horacio (Knoxville, TN)

1984-01-01T23:59:59.000Z

473

Downhole telemetry system  

DOE Patents (OSTI)

A downhole telemetry system is described for optically communicating to the surface operating parameters of a drill bit during ongoing drilling operations. The downhole telemetry system includes sensors mounted with a drill bit for monitoring at least one operating parameter of the drill bit and generating a signal representative thereof. The downhole telemetry system includes means for transforming and optically communicating the signal to the surface as well as means at the surface for producing a visual display of the optically communicated operating parameters of the drill bit. 7 figs.

Normann, R.A.; Kadlec, E.R.

1994-11-08T23:59:59.000Z

474

Internet Banking System Prototype  

E-Print Network (OSTI)

Internet Banking System refers to systems that enable bank customers to access accounts and general information on bank products and services through a personal computer or other intelligent device. Internet banking products and services can include detailed account information for corporate customers as well as account summery and transfer money. Ultimately, the products and services obtained through Internet Banking may mirror products and services offered through other bank delivery channels. In this paper, Internet Banking System Prototype has been proposed in order to illustrate the services which is provided by the Bank online services.

Alnaqeib, Rami; Jalab, Hamid A; Zaidan, M A; Hmood, Ali K

2010-01-01T23:59:59.000Z

475

Photovoltaic lighting system performance  

DOE Green Energy (OSTI)

The performance of 21 PV-powered low pressure sodium lighting systems on a multi-use has been documented in this paper. Specific areas for evaluation include the vandal resistant PV modules, constant voltage and on/off PV charge controllers, flooded deep-cycle lead-antimony and valve regulated lead-acid (VLRA) gel batteries, and low pressure sodium ballasts and lights. The PV lighting system maintenance intervals and lessons learned have been documented over the past 2.5 years. The above performance data has shown that with careful hardware selection, installation, and maintenance intervals the PV lighting systems will operate reliably.

Harrington, S.R.; Hund, T.D.

1996-06-01T23:59:59.000Z

476

Collector: storage wall systems  

SciTech Connect

Passive Trombe wall systems require massive masonry walls to minimize large temperature swings and movable night insulation to prevent excessive night heat losses. As a solar energy collection system, Trombe wall systems have low efficiencies because of the nature of the wall and, if auxiliary heat is needed, because of absorption of this heat. Separation of collector and storage functions markedly improves the efficiency. A simple fiberglass absorber can provide high efficiency while phase change storage provides a compact storage unit. The need for movable insulation is obviated.

Boardman, H.

1980-01-01T23:59:59.000Z

477

Executive information system  

DOE Green Energy (OSTI)

The Executive Information System (EIS) is a computer-based information handling system. The system has been designed and implemented for Energy Conversion and Utilization Technologies to allow program managers easy access and tracking of certain types of reporting at various levels of management interaction, to simplify the handling of program-related data, and to streamline the preparation of reporting documents and responses to requests for information from the program. The EIS is especially useful in assisting DOE program managers in the routine dissemination of reports and information. The characteristics of each component of the EIS are discussed. A user's guide to the EIS is included in this report.

Vitullo, M.; Winter, C.; Johnson, D.R.

1984-07-01T23:59:59.000Z

478

Advanced Monitoring systems initiative  

SciTech Connect

The Advanced Monitoring Systems Initiative (AMSI) actively searches for promising technologies and aggressively moves them from the research bench into DOE/NNSA end-user applications. There is a large unfulfilled need for an active element that reaches out to identify and recruit emerging sensor technologies into the test and evaluation function. Sensor research is ubiquitous, with the seeds of many novel concepts originating in the university systems, but at present these novel concepts do not move quickly and efficiently into real test environments. AMSI is a widely recognized, self-sustaining ''business'' accelerating the selection, development, testing, evaluation, and deployment of advanced monitoring systems and components.

R.J. Venedam; E.O. Hohman; C.F. Lohrstorfer; S.J. Weeks; J.B. Jones; W.J. Haas

2004-09-30T23:59:59.000Z

479

Shock destruction armor system  

DOE Patents (OSTI)

A shock destruction armor system is constructed and arranged to destroy the force of impact of a projectile by shock hydrodynamics. The armor system is designed to comprise a plurality of superimposed armor plates each preferably having a thickness less than five times the projectile's diameter and are preferably separated one-from-another by a distance at least equal to one-half of the projectile's diameter. The armor plates are effective to hydrodynamically and sequentially destroy the projectile. The armor system is particularly adapted for use on various military vehicles, such as tanks, aircraft and ships.

Froeschner, Kenneth E. (Livermore, CA)

1993-01-01T23:59:59.000Z

480

Computerized procedures system  

DOE Patents (OSTI)

An online data driven computerized procedures system that guides an operator through a complex process facility's operating procedures. The system monitors plant data, processes the data and then, based upon this processing, presents the status of the current procedure step and/or substep to the operator. The system supports multiple users and a single procedure definition supports several interface formats that can be tailored to the individual user. Layered security controls access privileges and revisions are version controlled. The procedures run on a server that is platform independent of the user workstations that the server interfaces with and the user interface supports diverse procedural views.

Lipner, Melvin H. (Monroeville, PA); Mundy, Roger A. (North Huntingdon, PA); Franusich, Michael D. (Upper St. Clair, PA)

2010-10-12T23:59:59.000Z

Note: This page contains sample records for the topic "runtime systems rx-solvers" 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.


481

Distributed Optimization System  

DOE Patents (OSTI)

A search system and method for controlling multiple agents to optimize an objective using distributed sensing and cooperative control. The search agent can be one or more physical agents, such as a robot, and can be software agents for searching cyberspace. The objective can be: chemical sources, temperature sources, radiation sources, light sources, evaders, trespassers, explosive sources, time dependent sources, time independent sources, function surfaces, maximization points, minimization points, and optimal control of a system such as a communication system, an economy, a crane, and a multi-processor computer.

Hurtado, John E. (Albuquerque, NM); Dohrmann, Clark R. (Albuquerque, NM); Robinett, III, Rush D. (Tijeras, NM)

2004-11-30T23:59:59.000Z

482

Securing Control Systems Modems  

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

Recommended Practice for Securing Recommended Practice for Securing Control System Modems January 2008 iii ABSTRACT This paper addresses an often overlooked "backdoor" into critical infrastructure control systems created by modem connections. A modem's connection to the public telephone system is similar to a corporate network connection to the Internet. By tracing typical attack paths into the system, this paper provides the reader with an analysis of the problem and then guides the reader through methods to evaluate existing modem security. Following the analysis, a series of methods for securing modems is provided. These methods are correlated to well-known networking security methods. iv ACKNOWLEDGEMENT This document was developed for the U.S. Department of Homeland

483

Electricity Distribution System Workshop  

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

Grid Tech Team Grid Tech Team Discussion Summary Electricity Distribution System Workshop 2 Table of Contents INTRODUCTION ............................................................................................................................................. 3 EXECUTIVE SUMMARY .................................................................................................................................. 4 Process ...................................................................................................................................................... 4 Common Themes ...................................................................................................................................... 5 Discussion Topic Tables ............................................................................................................................. 8

484

PDSF's Eliza File Systems  

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

Eliza File Systems Eliza File Systems Eliza File Systems Storage at PDSF is organized by group and all partitions are exported to all the nodes in the cluster. Please note that files on these file systems are not backed up. It is the responsibility of users to back up their files themselves as necessary. Over the years at PDSF there have been incidents which resulted in a loss of data from disk, often related to aging hardware. Note that the way to display the SGE io units on the command line is "qconf -se global". Disk Vault Experiments SGE io units Disk Space (TB) Directories eliza1 Atlas 400 35 atlas eliza2 Atlas 200 35 atlas eliza5 Cuore, Kamland 400 34 cuore kamland eliza6 Alice, RNC, Star 400 34 alice rnc star eliza7 Dayabay 200 24 dayabay icecube

485

Systems Engineering and Integration  

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

The fuel cycle in use today in the United States faces challenges in achieving the goals of sustainability. While used fuel is safely stored at reactor sites, the development of a system to manage...

486

Advanced synchronous luminescence system  

DOE Patents (OSTI)

A method and apparatus for determining the condition of tissue or otherwise making chemical identifications includes exposing the sample to a light source, and using a synchronous luminescence system to produce a spectrum that can be analyzed for tissue condition.

Vo-Dinh, Tuan (Knoxville, TN)

1997-01-01T23:59:59.000Z

487

Genomics and Systems Biology  

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

Genomics and Systems Biology Genomics and Systems Biology Genomics and Systems Biology Los Alamos scientists perform research in functional genomics and structural genomics, and applications for such work cover diverse fields such as energy, agriculture, and environmental cleanup. Get Expertise Babetta Marrone Biofuels Program Manager Email Cheryl Kuske DOE BER Biological System Science Division Program Manager Email Chris Detter Emerging Threats Program Manager: Email Rebecca McDonald Bioscience Communications Email "We were asked to build a rocket ship," said developer Joel Berendzen, "but instead we built a 10,000 mph motorcycle." - Sequedex team LANL leads the world in computational finishing of microbial genomes Protein research Read caption + In 2013, Los Alamos scientist Richard Sayre and his team genetically

488

NETL: Gasification Systems - Solicitations  

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

Shelf > Solicitations Shelf > Solicitations Gasification Systems Solicitations All NETL Solicitations / Funding Opportunity Announcements (FOA) Gasification RSS Feed NETL RSS Feeds: List of available NETL RSS feeds. Business & Solicitations RSS: Subscribe to this to be notified of all NETL solicitations or FOA postings. Gasification RSS: Subscribe to this to be notified of Gasification news, solicitations and FOA postings. Business Alert Notification System Official notification is available through the Business Alert Notification System. *These notifications are provided as a courtesy and there may be a delay between the opportunity announcement and the arrival of the alert. SOLICITATION TITLE / AWARDS ANNOUNCEMENT PROJECT PAGE(S) 12.11.13: Fossil Energy's Request for Information DE-FOA-0001054; titled "Novel Crosscutting Research and Development to Support Advanced Energy Systems." Application due date is January 15, 2014. Applications and/or instructions can be found with this Funding Opportunity Announcement on FedConnect.

489

Integrating Management Systems  

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

Mission Execution by Mission Execution by Integrating our Management Systems Integrating our Management Systems 1 W e e k l y O p e r a t i o n s M e e t i n g N o v e m b e r 1 , 2 0 1 1 M i c h a e l J . W e i s Pulling the Pieces Together for Improving DOE Management to Enable Mission Execution 2  Process changes Process changes  Behavioral changes Behavioral changes  System changes System changes Process Change Approach Strengthening and Expediting Decision Making 3 Proposed Outcomes Horizontal Integration Incoming DOE Business Crosscutting Issues (i.e. NLDC input) Hi-level Roadblocks Operations Management Council Associate Deputy Secretary Collaborative Action Process Chief Operating Officer Weekly Operations Council (OMC) Super 8 Secretary (ADS) (CAP) Board (COOB) p Meeting Endorsement / Commitment Super 8 US Meetings COO Meetings

490

Solar system fault detection  

SciTech Connect

A fault detecting apparatus and method are provided for use with an active solar system. The apparatus provides an indication as to whether one or more predetermined faults have occurred in the solar system. The apparatus includes a plurality of sensors, each sensor being used in determining whether a predetermined condition is present. The outputs of the sensors are combined in a pre-established manner in accordance with the kind of predetermined faults to be detected. Indicators communicate with the outputs generated by combining the sensor outputs to give the user of the solar system and the apparatus an indication as to whether a predetermined fault has occurred. Upon detection and indication of any predetermined fault, the user can take appropriate corrective action so that the overall reliability and efficiency of the active solar system are increased.

Farrington, Robert B. (Wheatridge, CO); Pruett, Jr., James C. (Lakewood, CO)

1986-01-01T23:59:59.000Z

491

Relay contact monitoring system  

Science Conference Proceedings (OSTI)

A switching system for switching on and off heating and air conditioning units in an environmental control system. The switching system includes a thermostat and a relay conductively coupled to the thermostat. The relay has a contact, which is responsive to a change signal for changing its position. The system further includes a programmable monitor having predetermined positions stored in a memory. The monitor is conductively coupled to the contact and to the thermostat for continually determining the position of the contact, and for sending a change signal to the relay for switching the position of the contact, as needed, to be in conformance with a predetermined position stored in the memory. 3 figs.

Mehta, V.

1994-01-11T23:59:59.000Z

492

Solar heating system  

DOE Patents (OSTI)

An improved solar heating system in which the incident radiation of the sun is absorbed on collector panels, transferred to a storage unit and then distributed as heat for a building and the like. The improvement is obtained by utilizing a storage unit comprising separate compartments containing an array of materials having different melting points ranging from 75.degree. to 180.degree. F. The materials in the storage system are melted in accordance with the amount of heat absorbed from the sun and then transferred to the storage system. An efficient low volume storage system is provided by utilizing the latent heat of fusion of the materials as they change states in storing and releasing heat for distribution.

Schreyer, James M. (Oak Ridge, TN); Dorsey, George F. (Concord, TN)

1982-01-01T23:59:59.000Z

493

Improved solar heating systems  

DOE Patents (OSTI)

An improved solar heating system is described in which the incident radiation of the sun is absorbed on collector panels, transferred to a storage unit and then distributed as heat for a building and the like. The improvement is obtained by utilizing a storage unit comprising separate compartments containing an array of materials having different melting points ranging from 75 to 180/sup 0/F. The materials in the storage system are melted in accordance with the amount of heat absorbed from the sun and then transferred to the storage system. An efficient low volume storage system is provided by utilizing the latent heat of fusion of the materials as they change states in storing ad releasing heat for distribution.

Schreyer, J.M.; Dorsey, G.F.

1980-05-16T23:59:59.000Z

494

Sustainable Electrical Energy Systems  

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

Sustainable Electrical Energy Systems Speaker(s): Mark O'Malley Date: June 27, 2012 - 12:00pm Location: 90-1099 Seminar HostPoint of Contact: Sila Kiliccote The process of making...

495

Architectures for cooperative systems  

Science Conference Proceedings (OSTI)

The primary perspective which the author brings to this topic comes from working with the design and implementation of high level CASE tools. The interest which I have in software architectures for cooperative systems stems from considering the problem ...

Brian Hanley

1995-04-01T23:59:59.000Z

496

Pupillary efficient lighting system  

DOE Patents (OSTI)

A lighting system having at least two independent lighting subsystems each with a different ratio of scotopic illumination to photopic illumination. The radiant energy in the visible region of the spectrum of the lighting subsystems can be adjusted relative to each other so that the total scotopic illumination of the combined system and the total photopic illumination of the combined system can be varied independently. The dilation or contraction of the pupil of an eye is controlled by the level of scotopic illumination and because the scotopic and photopic illumination can be separately controlled, the system allows the pupil size to be varied independently of the level of photopic illumination. Hence, the vision process can be improved for a given level of photopic illumination. 5 figs.

Berman, S.M.; Jewett, D.L.

1989-04-14T23:59:59.000Z

497

Tandem mobile robot system  

DOE Patents (OSTI)

A robotic vehicle system for terrain navigation mobility provides a way to climb stairs, cross crevices, and navigate across difficult terrain by coupling two or more mobile robots with a coupling device and controlling the robots cooperatively in tandem.

Buttz, James H. (Albuquerque, NM); Shirey, David L. (Albuquerque, NM); Hayward, David R. (Albuquerque, NM)

2003-01-01T23:59:59.000Z

498

Secondary fuel delivery system  

SciTech Connect

A secondary fuel delivery system for delivering a secondary stream of fuel and/or diluent to a secondary combustion zone located in the transition piece of a combustion engine, downstream of the engine primary combustion region is disclosed. The system includes a manifold formed integral to, and surrounding a portion of, the transition piece, a manifold inlet port, and a collection of injection nozzles. A flowsleeve augments fuel/diluent flow velocity and improves the system cooling effectiveness. Passive cooling elements, including effusion cooling holes located within the transition boundary and thermal-stress-dissipating gaps that resist thermal stress accumulation, provide supplemental heat dissipation in key areas. The system delivers a secondary fuel/diluent mixture to a secondary combustion zone located along the length of the transition piece, while reducing the impact of elevated vibration levels found within the transition piece and avoiding the heat dissipation difficulties often associated with traditional vibration reduction methods.

Parker, David M. (Oviedo, FL); Cai, Weidong (Oviedo, FL); Garan, Daniel W. (Orlando, FL); Harris, Arthur J. (Orlando, FL)

2010-02-23T23:59:59.000Z

499

Modular tokamak magnetic system  

DOE Patents (OSTI)

A modular tokamak system comprised of a plurality of interlocking modules. Each module is comprised of a vacuum vessel section, a toroidal field coil, modular saddle coils which generate a poloidal magnetic field and ohmic heating coils.

Yang, Tien-Fang

1986-11-20T23:59:59.000Z

500

Computer memory management system  

DOE Patents (OSTI)

A computer memory management system utilizing a memory structure system of "intelligent" pointers in which information related to the use status of the memory structure is designed into the pointer. Through this pointer system, The present invention provides essentially automatic memory management (often referred to as garbage collection) by allowing relationships between objects to have definite memory management behavior by use of coding protocol which describes when relationships should be maintained and when the relationships should be broken. In one aspect, the present invention system allows automatic breaking of strong links to facilitate object garbage collection, coupled with relationship adjectives which define deletion of associated objects. In another aspect, The present invention includes simple-to-use infinite undo/redo functionality in that it has the capability, through a simple function call, to undo all of the changes made to a data model since the previous `valid state` was noted.

Kirk, III, Whitson John (Greenwood, MO)

2002-01-01T23:59:59.000Z