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Sample records for distributed computing group

  1. ETH Zurich Distributed Computing Group Stephan Holzer SODA 2012 Stephan Holzer

    E-Print Network [OSTI]

    ETH Zurich ­ Distributed Computing Group Stephan Holzer SODA 2012 Stephan Holzer Silvio Frischknecht Roger Wattenhofer Networks Cannot Compute Their Diameter in Sublinear Time ETH Zurich ­ Distributed Computing Group #12;ETH Zurich ­ Distributed Computing Group Stephan Holzer SODA 2012 Distributed

  2. ETH Zurich Distributed Computing Group Stephan Holzer 1ETH Zurich Distributed Computing www.disco.ethz.ch Stephan Holzer

    E-Print Network [OSTI]

    ETH Zurich ­ Distributed Computing Group Stephan Holzer 1ETH Zurich ­ Distributed Computing ­ www on Multiple Channels #12;ETH Zurich ­ Distributed Computing Group Stephan Holzer 2 Problem: Time-Optimal Information Exchange on Multiple Channels n:= # nodes #12;ETH Zurich ­ Distributed Computing Group Stephan

  3. ETH Zurich Distributed Computing Group Stephan Holzer 1ETH Zurich Distributed Computing www.disco.ethz.ch Stephan Holzer

    E-Print Network [OSTI]

    ETH Zurich ­ Distributed Computing Group Stephan Holzer 1ETH Zurich ­ Distributed Computing ­ www Networks #12;ETH Zurich ­ Distributed Computing Group Stephan Holzer 2 Problem: Self-Monitoring in Dynamic Wireless Networks Who is in the network? O(1)? Update #12;ETH Zurich ­ Distributed Computing Group Stephan

  4. ETH Zurich Distributed Computing Group Stephan HolzerETH Zurich Distributed Computing www.disco.ethz.ch Stephan Holzer -ETH Zrich

    E-Print Network [OSTI]

    ETH Zurich ­ Distributed Computing Group Stephan HolzerETH Zurich ­ Distributed Computing ­ www Computing Group Stephan Holzer Deterministic Multi-Channel Information Exchange Problem: n:= # nodes #12;ETH Zurich ­ Distributed Computing Group Stephan Holzer Deterministic Multi-Channel Information Exchange

  5. Stone Age Distributed Computing (Extended Abstract)

    E-Print Network [OSTI]

    Stone Age Distributed Computing (Extended Abstract) Yuval Emek Distributed Computing Group ETH Zurich, Switzerland yemek@ethz.ch Roger Wattenhofer Distributed Computing Group ETH Zurich, Switzerland and cellular automata is suitable for applying the distributed computing lens to the study of networks of sub

  6. Object Management Group Super Distributed Objects

    E-Print Network [OSTI]

    Suzuki, Jun

    Survey" (sdo/00-06-05). The idea for Super Distributed Objects is to provide a standard computingObject Management Group Super Distributed Objects A White Paper - Ver.1.00- Super Distributed Ltd. Stefan Arbanowski, GMD Fokus Junichi Suzuki, UC Irvine #12;Super Distributed Objects DSIG White

  7. Computing Frontier: Distributed Computing

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit the following commentsMethodsCompositional6EnergyComputing Frontier:

  8. Distributed Computing Group

    E-Print Network [OSTI]

    . Advisors Philipp Sommer sommer@tik.ee.ethz.ch 044 632 7838 Roland Flury rflury@tik.ee.ethz.ch 044 632 0896

  9. Distributed Computing Group

    E-Print Network [OSTI]

    programming language. Are you interested? Please contact us by email or phone. Advisors Philipp Sommer sommer

  10. Distributed Computing Group

    E-Print Network [OSTI]

    . Contact Philipp Sommer sommer@tik.ee.ethz.ch 044 632 7838 Roger Wattenhofer wattenhofer@tik.ee.ethz.ch 044

  11. Distributed Computing Group

    E-Print Network [OSTI]

    us by email or phone. Advisors Benjamin Sigg besigg@tik.ee.ethz.ch 044 632 7007 Philipp Sommer sommer

  12. Distributed Computing Group

    E-Print Network [OSTI]

    Sommer sommer@tik.ee.ethz.ch 044 632 7838 Roger Wattenhofer wattenhofer@tik.ee.ethz.ch 044 632 6312 #12;

  13. Distributed Computing Column 36 Distributed Computing: 2009 Edition

    E-Print Network [OSTI]

    Distributed Computing Column 36 Distributed Computing: 2009 Edition Idit Keidar Dept. of Electrical computing events. Awards First, let's look at awards. This year we learned that two women were recognized with ACM and IEEE prestigious awards for their achievements in, (among other things), distributed computing

  14. Alexandru Iosup Parallel and Distributed Systems Group

    E-Print Network [OSTI]

    Langendoen, Koen

    ­ the Netherlands ­ Europe founded 13th century pop: 100,000 pop.: 100,000 pop: 16.5 M pop: 100,000 founded 1842 pop: 13,000 pop.: 100,000 (We are here) #12;The Parallel and Distributed Systems Group at TU Delft Johan Challenges and High Quality Time ­ A. Iosup 5 #12;Online Gaming used to be art, may now be computing

  15. Distributed Energy Systems Integration Group (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2009-10-01

    Factsheet developed to describe the activites of the Distributed Energy Systems Integration Group within NREL's Electricity, Resources, and Buildings Systems Integration center.

  16. Information Security Group IY5512 Computer Security

    E-Print Network [OSTI]

    Mitchell, Chris

    Information Security Group IY5512 Computer Security Part 7b: Windows securityPart 7b: Windows security Chris Mitchell me@chrismitchell.net http://www.chrismitchell.net 1 Information Security Group) of Windows machines. 2 Information Security Group Objectives II · Focus on Active Directory, authentication

  17. Srinivasan Named Head of NERSC's Computational Systems Group

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

    Srinivasan Named Head of NERSC's Computational Systems Group Srinivasan Named Head of NERSC's Computational Systems Group August 31, 2011 | Tags: NERSC Jay Srinivasan has been...

  18. POSTDOCTORAL POSITION Biomedical Image Computing Group

    E-Print Network [OSTI]

    Salvaggio, Carl

    POSTDOCTORAL POSITION Biomedical Image Computing Group University of Washington, Seattle, WA. Departments of Pediatrics, Bioengineering and Radiology www.depts.washington.edu/bicg The Biomedical Image to acquire, process and analyze biomedical imaging data of the developing brain. The postdoctoral researcher

  19. Distributions of methyl group rotational barriers in polycrystalline organic solids

    SciTech Connect (OSTI)

    Beckmann, Peter A. E-mail: wangxianlong@uestc.edu.cn; Conn, Kathleen G.; Division of Education and Human Services, Neumann University, One Neumann Drive, Aston, Pennsylvania 19014-1298 ; Mallory, Clelia W.; Department of Chemistry, Bryn Mawr College, 101 North Merion Ave., Bryn Mawr, Pennsylvania 19010-2899 ; Mallory, Frank B.; Rheingold, Arnold L.; Rotkina, Lolita; Wang, Xianlong E-mail: wangxianlong@uestc.edu.cn

    2013-11-28

    We bring together solid state {sup 1}H spin-lattice relaxation rate measurements, scanning electron microscopy, single crystal X-ray diffraction, and electronic structure calculations for two methyl substituted organic compounds to investigate methyl group (CH{sub 3}) rotational dynamics in the solid state. Methyl group rotational barrier heights are computed using electronic structure calculations, both in isolated molecules and in molecular clusters mimicking a perfect single crystal environment. The calculations are performed on suitable clusters built from the X-ray diffraction studies. These calculations allow for an estimate of the intramolecular and the intermolecular contributions to the barrier heights. The {sup 1}H relaxation measurements, on the other hand, are performed with polycrystalline samples which have been investigated with scanning electron microscopy. The {sup 1}H relaxation measurements are best fitted with a distribution of activation energies for methyl group rotation and we propose, based on the scanning electron microscopy images, that this distribution arises from molecules near crystallite surfaces or near other crystal imperfections (vacancies, dislocations, etc.). An activation energy characterizing this distribution is compared with a barrier height determined from the electronic structure calculations and a consistent model for methyl group rotation is developed. The compounds are 1,6-dimethylphenanthrene and 1,8-dimethylphenanthrene and the methyl group barriers being discussed and compared are in the 2–12 kJ?mol{sup ?1} range.

  20. Communication and Computation in Distributed CSP Algorithms

    E-Print Network [OSTI]

    Krishnamachari, Bhaskar

    Communication and Computation in Distributed CSP Algorithms C`esar Fern`andez1 , Ram´on B´ejar1 in the context of networked distributed systems. In order to study the performance of Distributed CSP (DisCSP consider two complete DisCSP algorithms: asynchronous backtracking (ABT) and asynchronous weak commitment

  1. Accountability in Cloud Computing and Distributed Computer Systems Hongda Xiao

    E-Print Network [OSTI]

    Feigenbaum, Joan

    a mechanism for holding cloud-service providers accountable but also an interesting application of secure be applicable to other aspects of data- center and cloud security. #12;Accountability in Cloud ComputingAbstract Accountability in Cloud Computing and Distributed Computer Systems Hongda Xiao 2014

  2. Embodied emergence : distributed computing manipulatives

    E-Print Network [OSTI]

    Bouchard, David, S.M. Massachusetts Institute of Technology

    2007-01-01

    Distributed systems and the emergent properties that can arise out of simple localized interactions have fascinated scientists and artists alike for the last century. They challenge the notions of control and creativity, ...

  3. COMPUTING FACILITIES FOR SMALL PHYSICS ANALYSIS GROUPS: EXAMPLES AND CONSIDERATION

    E-Print Network [OSTI]

    Titov, Anatoly

    , local group computing clusters (including colocation), and cloud computing. A growing variety): to use a big1 centralized cluster (we mean a collaboration cluster); for cloud computing; as a group computing cluster and cloud computing facilities: now and in the nearest years. Usually, a small physics

  4. Alexandru Iosup Parallel and Distributed Systems Group

    E-Print Network [OSTI]

    Langendoen, Koen

    Online Games: High Performance Computing and High Quality Time 1 Massivizing Social Games: High,000,000 active players Massivizing Social Games: High Performance Computing and High Quality Time ­ A. Iosup 3 Games: High Performance Computing and High Quality Time ­ A. Iosup 4 Sources: MMOGChart, own research

  5. ATLAS Distributed Computing in LHC Run2

    E-Print Network [OSTI]

    Campana, Simone; The ATLAS collaboration

    2015-01-01

    The ATLAS Distributed Computing infrastructure has evolved after the first period of LHC data taking in order to cope with the challenges of the upcoming LHC Run2. An increased data rate and computing demands of the Monte-Carlo simulation, as well as new approaches to ATLAS analysis, dictated a more dynamic workload management system (ProdSys2) and data management system (Rucio), overcoming the boundaries imposed by the design of the old computing model. In particular, the commissioning of new central computing system components was the core part of the migration toward the flexible computing model. The flexible computing utilization exploring the opportunistic resources such as HPC, cloud, and volunteer computing is embedded in the new computing model, the data access mechanisms have been enhanced with the remote access, and the network topology and performance is deeply integrated into the core of the system. Moreover a new data management strategy, based on defined lifetime for each dataset, has been defin...

  6. Distributed Systems Group Membership and View

    E-Print Network [OSTI]

    Guerraoui, Rachid

    Synchrony (vs). Uses: GroupMembership (gmp). TerminatingReliableBroadcast(trb). BestEffortBroadcast(beb). #12

  7. Evaluation of distributed ANSYS for high performance computing...

    Office of Scientific and Technical Information (OSTI)

    Evaluation of distributed ANSYS for high performance computing of MEMS. Citation Details In-Document Search Title: Evaluation of distributed ANSYS for high performance computing of...

  8. Stone Age Distributed Computing Yuval Emek Jasmin Smula Roger Wattenhofer

    E-Print Network [OSTI]

    Stone Age Distributed Computing Yuval Emek Jasmin Smula Roger Wattenhofer Computer Engineering.g. traffic), or electrical engineering (e.g. circuits). Distributed computing is the area that studies on "Internet-capable" devices. The standard model in distributed computing is the so called message passing

  9. LVT: A Layered Verification Technique for Distributed Computing Systems

    E-Print Network [OSTI]

    Olsson, Ron

    LVT: A Layered Verification Technique for Distributed Computing Systems Cui Zhang ? , Brian R of distributed computing systems with multiple component layers. Each lower layer in such a system provides languages as interfaces of systems, LVT treats each layer in a distributed computing system as a distributed

  10. Pseudo-interactive monitoring in distributed computing

    SciTech Connect (OSTI)

    Sfiligoi, I.; /Fermilab; Bradley, D.; Livny, M.; /Wisconsin U., Madison

    2009-05-01

    Distributed computing, and in particular Grid computing, enables physicists to use thousands of CPU days worth of computing every day, by submitting thousands of compute jobs. Unfortunately, a small fraction of such jobs regularly fail; the reasons vary from disk and network problems to bugs in the user code. A subset of these failures result in jobs being stuck for long periods of time. In order to debug such failures, interactive monitoring is highly desirable; users need to browse through the job log files and check the status of the running processes. Batch systems typically don't provide such services; at best, users get job logs at job termination, and even this may not be possible if the job is stuck in an infinite loop. In this paper we present a novel approach of using regular batch system capabilities of Condor to enable users to access the logs and processes of any running job. This does not provide true interactive access, so commands like vi are not viable, but it does allow operations like ls, cat, top, ps, lsof, netstat and dumping the stack of any process owned by the user; we call this pseudo-interactive monitoring. It is worth noting that the same method can be used to monitor Grid jobs in a glidein-based environment. We further believe that the same mechanism could be applied to many other batch systems.

  11. Interoperable PKI Data Distribution in Computational Grids

    SciTech Connect (OSTI)

    Pala, Massimiliano; Cholia, Shreyas; Rea, Scott A.; Smith, Sean W.

    2008-07-25

    One of the most successful working examples of virtual organizations, computational grids need authentication mechanisms that inter-operate across domain boundaries. Public Key Infrastructures(PKIs) provide sufficient flexibility to allow resource managers to securely grant access to their systems in such distributed environments. However, as PKIs grow and services are added to enhance both security and usability, users and applications must struggle to discover available resources-particularly when the Certification Authority (CA) is alien to the relying party. This article presents how to overcome these limitations of the current grid authentication model by integrating the PKI Resource Query Protocol (PRQP) into the Grid Security Infrastructure (GSI).

  12. Computer Networking Group | Stanford Synchrotron Radiation Lightsource

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAuditsCluster Compatibilitydefault Changes TheCompute Nodes

  13. Lateral Distribution for Aligned Events in Muon Groups Deep Underground

    E-Print Network [OSTI]

    A. L. Tsyabuk; R. A. Mukhamedshin; Yu. V. Stenkin

    2007-01-09

    The paper concerns the so-called aligned events observed in cosmic rays. The phenomenon of the alignment of the most energetic subcores of gamma-ray--hadron ($\\gamma-h$) families (particles of the highest energies in the central EAS core) was firstly found in the "Pamir" emulsion chamber experiment and related to a coplanar particle production at $E_0>10^{16}$ eV. Here a separation distribution (distances between pairs of muons) for aligned events has been analyzed throughout muon groups measured by Baksan Underground Scintillation Telescope (BUST) for threshold energies $0.85 \\div 3.2$ TeV during a period of 7.7 years. Only muon groups of multiplicity $m\\geq 4$ with inclined trajectories for an interval of zenith angles $50^\\circ - 60^\\circ$ were selected for the analysis. The analysis has revealed that the distribution complies with the exponential law. Meanwhile the distributions become steeper with the increase of threshold energy. There has been no difference between the lateral distribution of all the groups and the distribution of the aligned groups.

  14. Multiclass Classification of Distributed Memory Parallel Computations

    E-Print Network [OSTI]

    Whalen, Sean; Peisert, Sean; Bishop, Matt

    2012-01-01

    95616 b Abstract High Performance Computing (HPC) is a ?eldorganizing maps, High performance computing, Communicationpowerful known High Performance Computing (HPC) systems in

  15. High Performance Computational Biology: A Distributed computing Perspective (2010 JGI/ANL HPC Workshop)

    ScienceCinema (OSTI)

    Konerding, David [Google, Inc

    2011-06-08

    David Konerding from Google, Inc. gives a presentation on "High Performance Computational Biology: A Distributed Computing Perspective" at the JGI/Argonne HPC Workshop on January 26, 2010.

  16. EWI PDS A.Iosup Research Cloud Computing Cloud Computing Research, PDS Group, TU Delft

    E-Print Network [OSTI]

    Iosup, Alexandru

    EWI PDS A.Iosup Research Cloud Computing Cloud Computing Research, PDS Group, TU Delft Cloud Computing Research http://www.pds.ewi.tudelft.nl/~iosup/research_cloud.html Rationale why and how is this work relevant? Cloud computing is an emerging commercial infrastructure paradigm that promises

  17. Perspectives on distributed computing : thirty people, four user types, and the distributed computing user experience.

    SciTech Connect (OSTI)

    Childers, L.; Liming, L.; Foster, I.; Mathematics and Computer Science; Univ. of Chicago

    2008-10-15

    This report summarizes the methodology and results of a user perspectives study conducted by the Community Driven Improvement of Globus Software (CDIGS) project. The purpose of the study was to document the work-related goals and challenges facing today's scientific technology users, to record their perspectives on Globus software and the distributed-computing ecosystem, and to provide recommendations to the Globus community based on the observations. Globus is a set of open source software components intended to provide a framework for collaborative computational science activities. Rather than attempting to characterize all users or potential users of Globus software, our strategy has been to speak in detail with a small group of individuals in the scientific community whose work appears to be the kind that could benefit from Globus software, learn as much as possible about their work goals and the challenges they face, and describe what we found. The result is a set of statements about specific individuals experiences. We do not claim that these are representative of a potential user community, but we do claim to have found commonalities and differences among the interviewees that may be reflected in the user community as a whole. We present these as a series of hypotheses that can be tested by subsequent studies, and we offer recommendations to Globus developers based on the assumption that these hypotheses are representative. Specifically, we conducted interviews with thirty technology users in the scientific community. We included both people who have used Globus software and those who have not. We made a point of including individuals who represent a variety of roles in scientific projects, for example, scientists, software developers, engineers, and infrastructure providers. The following material is included in this report: (1) A summary of the reported work-related goals, significant issues, and points of satisfaction with the use of Globus software; (2) A method for characterizing users according to their technology interactions, and identification of four user types among the interviewees using the method; (3) Four profiles that highlight points of commonality and diversity in each user type; (4) Recommendations for technology developers and future studies; (5) A description of the interview protocol and overall study methodology; (6) An anonymized list of the interviewees; and (7) Interview writeups and summary data. The interview summaries in Section 3 and transcripts in Appendix D illustrate the value of distributed computing software--and Globus in particular--to scientific enterprises. They also document opportunities to make these tools still more useful both to current users and to new communities. We aim our recommendations at developers who intend their software to be used and reused in many applications. (This kind of software is often referred to as 'middleware.') Our two core recommendations are as follows. First, it is essential for middleware developers to understand and explicitly manage the multiple user products in which their software components are used. We must avoid making assumptions about the commonality of these products and, instead, study and account for their diversity. Second, middleware developers should engage in different ways with different kinds of users. Having identified four general user types in Section 4, we provide specific ideas for how to engage them in Section 5.

  18. Computational Algebra Group Centre for Experimental and Constructive Mathematics

    E-Print Network [OSTI]

    Computational Algebra Group Centre for Experimental and Constructive Mathematics Department - y + 1 0 1 Introduction Our goal is to do linear algebra computations over arbitrary rings and fields. We have written a Maple package, GenericLinearAlgebra, that implements the following commands

  19. Some computations for the exceptional groups relevant to the classification of p-compact groups

    E-Print Network [OSTI]

    Møller, Jesper Michael

    Some computations for the exceptional groups relevant to the classification of p-compact Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .* * . . . 46 II Fusion, Solvability and Swan's theorem 48 2 Fusion, Solvability and Swan's theorem

  20. Distributed anonymous function computation in information fusion and multiagent systems

    E-Print Network [OSTI]

    Hendrickx, Julien

    We propose a model for deterministic distributed function computation by a network of identical and anonymous nodes, with bounded computation and storage capabilities that do not scale with the network size. Our goal is ...

  1. A distributed computing environment for volume visualization 

    E-Print Network [OSTI]

    Barua, Sandip Pannalal

    1992-01-01

    in computer-aided instruction, and can be expected to be widely used in medical classrooms in the near future. Figure Remot W kststloos High Bandwidth I Li& I I I I I High Performance Computer Fig. 2. A real-time multi-user environment 2 could... Page Volume Rendering Time 48 Normalized and Processor Performance Compensated Volume Ren- dering Time 49 III Computation Overhead - Ray Trace Phase 51 IV Computation Overhead - Volume Build Phase . 51 CHAPTER I INTRODUCTION I. A Scientific...

  2. The Parallel BGL: A Generic Library for Distributed Graph Computations

    E-Print Network [OSTI]

    Lumsdaine, Andrew

    ] and written in a style similar to the C++ Standard Template Library (STL) [38, 46], 1 #12;data types providedThe Parallel BGL: A Generic Library for Distributed Graph Computations Douglas Gregor and Andrew,lums}@osl.iu.edu Abstract This paper presents the Parallel BGL, a generic C++ library for distributed graph computation

  3. Computation in a Distributed Information Market Joan Feigenbaum

    E-Print Network [OSTI]

    Fiat, Amos

    of an information market, along with trading strategies, in order to formalize the computational properties information, even if that information is distributed across many sources. Supporting evidence can be foundComputation in a Distributed Information Market Joan Feigenbaum Yale University Department

  4. Cloud Computing and Distributed Systems Laboratory DEPT. OF COMPUTER SCIENCE AND SOFTWARE ENGINEERING

    E-Print Network [OSTI]

    Melbourne, University of

    Cloud Computing and Distributed Systems Laboratory DEPT. OF COMPUTER SCIENCE AND SOFTWARE ENGINEERING THE UNIVERSITY OF MELBOURNE, AUSTRALIA The Cloud Computing and Distributed Systems (CLOUDS in 2008 by the CLOUDS lab at the University of Melbourne, facilitates the realization of the above vision

  5. UNIVERSITY OF CALIFORNIA, MESSENGERS: A Distributed Computing

    E-Print Network [OSTI]

    Fukuda, Munehiro

    OF PHILOSOPHY in Information and Computer Science by Munehiro Fukuda Thesis Committee: Professor Lubomir F. Bic : : : : : : : : : : : : : : : : : : : : : : : : 34 2.5.6 Behavior of the Interpreter : : : : : : : : : : : : : : : : : : : 35 Chapter 3 Qualitative Quantitative Evaluation of MESSENGERS : : : : : : 86 4.1 General Measurement

  6. Reliable Distributed Computing for Decision Support Systems

    E-Print Network [OSTI]

    Bargiela, Andrzej

    of pipes and network nodes spread over a large geographical area, calls for a control of computational system it is serv- icing. Addressing the reliability issues of dis- tributed systems involves tackling

  7. Massivizing Online Games: Distributed Computing Challenges and

    E-Print Network [OSTI]

    Langendoen, Koen

    .st.ewi.tudelft.nl #12;(TU) Delft ­ the Netherlands ­ Europe founded 13th century pop: 100,000 pop.: 100,000 pop: 16.5 M founded 1842 pop: 13,000 pop.: 100,000 (We are here) #12;Why Social Gaming? Massivizing Social Games Gaming used to be art, may now be computingOnline Gaming used to be art, may now be computing Massivizing

  8. Distributed computing of Seismic Imaging Algorithms

    E-Print Network [OSTI]

    Emami, Masnida; Jaberi, Nasrin

    2012-01-01

    The primary use of technical computing in the oil and gas industries is for seismic imaging of the earth's subsurface, driven by the business need for making well-informed drilling decisions during petroleum exploration and production. Since each oil/gas well in exploration areas costs several tens of millions of dollars, producing high-quality seismic images in a reasonable time can significantly reduce the risk of drilling a "dry hole". Similarly, these images are important as they can improve the position of wells in a billion-dollar producing oil field. However seismic imaging is very data- and compute-intensive which needs to process terabytes of data and require Gflop-years of computation (using "flop" to mean floating point operation per second). Due to the data/computing intensive nature of seismic imaging, parallel computing are used to process data to reduce the time compilation. With introducing of Cloud computing, MapReduce programming model has been attracted a lot of attention in parallel and di...

  9. Domain analysis of computational science - Fifty years of a scientific computing group

    SciTech Connect (OSTI)

    Tanaka, M.

    2010-02-23

    I employed bibliometric- and historical-methods to study the domain of the Scientific Computing group at Brookhaven National Laboratory (BNL) for an extended period of fifty years, from 1958 to 2007. I noted and confirmed the growing emergence of interdisciplinarity within the group. I also identified a strong, consistent mathematics and physics orientation within it.

  10. Parallel Computing Environments and Methods for Power Distribution System Simulation

    SciTech Connect (OSTI)

    Lu, Ning; Taylor, Zachary T.; Chassin, David P.; Guttromson, Ross T.; Studham, Scott S.

    2005-11-10

    The development of cost-effective high-performance parallel computing on multi-processor super computers makes it attractive to port excessively time consuming simulation software from personal computers (PC) to super computes. The power distribution system simulator (PDSS) takes a bottom-up approach and simulates load at appliance level, where detailed thermal models for appliances are used. This approach works well for a small power distribution system consisting of a few thousand appliances. When the number of appliances increases, the simulation uses up the PC memory and its run time increases to a point where the approach is no longer feasible to model a practical large power distribution system. This paper presents an effort made to port a PC-based power distribution system simulator (PDSS) to a 128-processor shared-memory super computer. The paper offers an overview of the parallel computing environment and a description of the modification made to the PDSS model. The performances of the PDSS running on a standalone PC and on the super computer are compared. Future research direction of utilizing parallel computing in the power distribution system simulation is also addressed.

  11. Working Group Report: Computing for the Intensity Frontier

    SciTech Connect (OSTI)

    Rebel, B.; Sanchez, M.C.; Wolbers, S.

    2013-10-25

    This is the report of the Computing Frontier working group on Lattice Field Theory prepared for the proceedings of the 2013 Community Summer Study ("Snowmass"). We present the future computing needs and plans of the U.S. lattice gauge theory community and argue that continued support of the U.S. (and worldwide) lattice-QCD effort is essential to fully capitalize on the enormous investment in the high-energy physics experimental program. We first summarize the dramatic progress of numerical lattice-QCD simulations in the past decade, with some emphasis on calculations carried out under the auspices of the U.S. Lattice-QCD Collaboration, and describe a broad program of lattice-QCD calculations that will be relevant for future experiments at the intensity and energy frontiers. We then present details of the computational hardware and software resources needed to undertake these calculations.

  12. Distributed Quantum Computation Architecture Using Semiconductor Nanophotonics

    E-Print Network [OSTI]

    Rodney Van Meter; Thaddeus D. Ladd; Austin G. Fowler; Yoshihisa Yamamoto

    2009-09-17

    In a large-scale quantum computer, the cost of communications will dominate the performance and resource requirements, place many severe demands on the technology, and constrain the architecture. Unfortunately, fault-tolerant computers based entirely on photons with probabilistic gates, though equipped with "built-in" communication, have very large resource overheads; likewise, computers with reliable probabilistic gates between photons or quantum memories may lack sufficient communication resources in the presence of realistic optical losses. Here, we consider a compromise architecture, in which semiconductor spin qubits are coupled by bright laser pulses through nanophotonic waveguides and cavities using a combination of frequent probabilistic and sparse determinstic entanglement mechanisms. The large photonic resource requirements incurred by the use of probabilistic gates for quantum communication are mitigated in part by the potential high-speed operation of the semiconductor nanophotonic hardware. The system employs topological cluster-state quantum error correction for achieving fault-tolerance. Our results suggest that such an architecture/technology combination has the potential to scale to a system capable of attacking classically intractable computational problems.

  13. Distributed Data Management Architecture for Embedded Computing

    E-Print Network [OSTI]

    Ludäscher, Bertram

    -time data management, sensors, embedded computing, virtualization, metadata, data grids Introduction Real and multi-sensor systems [NEES 2000], etc. In this paper we describe a real-time data grid architecture]. Because of rapidly evolving capabilities for observing the Earth, especially with network of sensors

  14. Massivizing Social Games: Distributed Computing Challenges and High Quality Time A. Iosup Alexandru Iosup

    E-Print Network [OSTI]

    Langendoen, Koen

    , is now many appsmany apps Online Gaming used to be art, may now be computingOnline Gaming used to be art, may now be computing #12;(TU) Delft ­ the Netherlands ­ Europe pop.: 100,000 pop:16.5 M founded 13th century pop: 100,000 founded 1842 pop: 13,000 #12;The Parallel and Distributed Systems Group at TU Delft

  15. Resource-Aware Distributed Scheduling Strategies for Large-Scale Computational

    E-Print Network [OSTI]

    Marchal, Loris

    such as data generated in the high-energy nuclear physics experiments [10], bioinfor- matics [11], astronomical study, with real-life parameters derived from high-energy nuclear physics experiments discussed in [10. In general, a grid computing environment is comprised of large groups of diverse geographically distributed

  16. Massivizing Social Games: Distributed Computing Challenges and High Quality Time A. Iosup Alexandru Iosup

    E-Print Network [OSTI]

    Langendoen, Koen

    appsmany apps Online Gaming used to be art, may now be computingOnline Gaming used to be art, may now (of Clouds) #12;(TU) Delft ­ the Netherlands ­ Europe pop.: 100,000 pop:16.5 M founded 13th century pop: 100,000 founded 1842 pop: 13,000 #12;The Parallel and Distributed Systems Group at TU Delft

  17. DETECTING TERMINATION OF DISTRIBUTED COMPUTATIONS USING MARKERS Jayadev Misra

    E-Print Network [OSTI]

    Tropper, Carl

    DETECTING TERMINATION OF DISTRIBUTED COMPUTATIONS USING MARKERS Jayadev Misra Department in designing computations by process networks, is detection of termination. We propose a very simple algorithm for termination detection in an arbitrary network using a single marker We show an application of this scheme

  18. Power-aware applications for scientific cluster and distributed computing

    E-Print Network [OSTI]

    David Abdurachmanov; Peter Elmer; Giulio Eulisse; Paola Grosso; Curtis Hillegas; Burt Holzman; Ruben L. Janssen; Sander Klous; Robert Knight; Shahzad Muzaffar

    2014-10-22

    The aggregate power use of computing hardware is an important cost factor in scientific cluster and distributed computing systems. The Worldwide LHC Computing Grid (WLCG) is a major example of such a distributed computing system, used primarily for high throughput computing (HTC) applications. It has a computing capacity and power consumption rivaling that of the largest supercomputers. The computing capacity required from this system is also expected to grow over the next decade. Optimizing the power utilization and cost of such systems is thus of great interest. A number of trends currently underway will provide new opportunities for power-aware optimizations. We discuss how power-aware software applications and scheduling might be used to reduce power consumption, both as autonomous entities and as part of a (globally) distributed system. As concrete examples of computing centers we provide information on the large HEP-focused Tier-1 at FNAL, and the Tigress High Performance Computing Center at Princeton University, which provides HPC resources in a university context.

  19. Clock distribution system for digital computers

    DOE Patents [OSTI]

    Wyman, Robert H. (Brentwood, CA); Loomis, Jr., Herschel H. (Davis, CA)

    1981-01-01

    Apparatus for eliminating, in each clock distribution amplifier of a clock distribution system, sequential pulse catch-up error due to one pulse "overtaking" a prior clock pulse. The apparatus includes timing means to produce a periodic electromagnetic signal with a fundamental frequency having a fundamental frequency component V'.sub.01 (t); an array of N signal characteristic detector means, with detector means No. 1 receiving the timing means signal and producing a change-of-state signal V.sub.1 (t) in response to receipt of a signal above a predetermined threshold; N substantially identical filter means, one filter means being operatively associated with each detector means, for receiving the change-of-state signal V.sub.n (t) and producing a modified change-of-state signal V'.sub.n (t) (n=1, . . . , N) having a fundamental frequency component that is substantially proportional to V'.sub.01 (t-.theta..sub.n (t) with a cumulative phase shift .theta..sub.n (t) having a time derivative that may be made uniformly and arbitrarily small; and with the detector means n+1 (1.ltoreq.n

  20. Distributed MultiInterface Computing with Polyglot R. Lindsay Todd and Ephraim P. Glinert

    E-Print Network [OSTI]

    Bystroff, Chris

    migratory programs (agents), mobile computing, and providing ubiquitous access for all users (in­ cluding: multi­interface environments, distributed computing, mobile computing, ubiquitous access. INTRODUCTIONDistributed Multi­Interface Computing with Polyglot R. Lindsay Todd and Ephraim P. Glinert Computer

  1. Computation of glint, glare, and solar irradiance distribution

    DOE Patents [OSTI]

    Ho, Clifford Kuofei; Khalsa, Siri Sahib Singh

    2015-08-11

    Described herein are technologies pertaining to computing the solar irradiance distribution on a surface of a receiver in a concentrating solar power system or glint/glare emitted from a reflective entity. At least one camera captures images of the Sun and the entity of interest, wherein the images have pluralities of pixels having respective pluralities of intensity values. Based upon the intensity values of the pixels in the respective images, the solar irradiance distribution on the surface of the entity or glint/glare corresponding to the entity is computed.

  2. First Experiences with LHC Grid Computing and Distributed Analysis

    SciTech Connect (OSTI)

    Fisk, Ian

    2010-12-01

    In this presentation the experiences of the LHC experiments using grid computing were presented with a focus on experience with distributed analysis. After many years of development, preparation, exercises, and validation the LHC (Large Hadron Collider) experiments are in operations. The computing infrastructure has been heavily utilized in the first 6 months of data collection. The general experience of exploiting the grid infrastructure for organized processing and preparation is described, as well as the successes employing the infrastructure for distributed analysis. At the end the expected evolution and future plans are outlined.

  3. A directory service for configuring high-performance distributed computations

    SciTech Connect (OSTI)

    Fitzgerald, S.; Kesselman, C.; Foster, I.

    1997-08-01

    High-performance execution in distributed computing environments often requires careful selection and configuration not only of computers, networks, and other resources but also of the protocols and algorithms used by applications. Selection and configuration in turn require access to accurate, up-to-date information on the structure and state of available resources. Unfortunately, no standard mechanism exists for organizing or accessing such information. Consequently, different tools and applications adopt ad hoc mechanisms, or they compromise their portability and performance by using default configurations. We propose a Metacomputing Directory Service that provides efficient and scalable access to diverse, dynamic, and distributed information about resource structure and state. We define an extensible data model to represent required information and present a scalable, high-performance, distributed implementation. The data representation and application programming interface are adopted from the Lightweight Directory Access Protocol; the data model and implementation are new. We use the Globus distributed computing toolkit to illustrate how this directory service enables the development of more flexible and efficient distributed computing services and applications.

  4. Department of Electrical Engineering and Computer Science Discrete Event Systems Group

    E-Print Network [OSTI]

    Tilbury, Dawn

    Department of Electrical Engineering and Computer Science 1 Discrete Event Systems Group A Discrete 2000 #12;Department of Electrical Engineering and Computer Science 2 Discrete Event Systems Group of Electrical Engineering and Computer Science 3 Discrete Event Systems Group Requirements for Industrial

  5. Composition of Autonomous Services with Distributed Data Flows and Computations

    E-Print Network [OSTI]

    Wiederhold, Gio

    @db.stanford.edu 5 Group Leader, Manufacturing Systems Integration Division, National Institute of Standards frameworks, such as CORBA, J2EE and SOAP. The distributed data-flow approach allows direct data exchange are exchanged using a client-server model where the megaservice serves as the central hub of all data traffic

  6. Legacy Computing Markup Language (LCML) and LEGEND -- LEGacy Encapsulation for Network Distribution

    E-Print Network [OSTI]

    Geiger, Stephen Kurt

    2004-01-01

    The rapid increase of computing power and emergence of distributed computing technologies such as Grid computing create new opportunities for scientific computing. One of the challenges faced in harnessing the emerging ...

  7. Institutional Computing Executive Group Review of Multi-programmatic & Institutional Computing, Fiscal Year 2005 and 2006

    SciTech Connect (OSTI)

    Langer, S; Rotman, D; Schwegler, E; Folta, P; Gee, R; White, D

    2006-12-18

    The Institutional Computing Executive Group (ICEG) review of FY05-06 Multiprogrammatic and Institutional Computing (M and IC) activities is presented in the attached report. In summary, we find that the M and IC staff does an outstanding job of acquiring and supporting a wide range of institutional computing resources to meet the programmatic and scientific goals of LLNL. The responsiveness and high quality of support given to users and the programs investing in M and IC reflects the dedication and skill of the M and IC staff. M and IC has successfully managed serial capacity, parallel capacity, and capability computing resources. Serial capacity computing supports a wide range of scientific projects which require access to a few high performance processors within a shared memory computer. Parallel capacity computing supports scientific projects that require a moderate number of processors (up to roughly 1000) on a parallel computer. Capability computing supports parallel jobs that push the limits of simulation science. M and IC has worked closely with Stockpile Stewardship, and together they have made LLNL a premier institution for computational and simulation science. Such a standing is vital to the continued success of laboratory science programs and to the recruitment and retention of top scientists. This report provides recommendations to build on M and IC's accomplishments and improve simulation capabilities at LLNL. We recommend that institution fully fund (1) operation of the atlas cluster purchased in FY06 to support a few large projects; (2) operation of the thunder and zeus clusters to enable 'mid-range' parallel capacity simulations during normal operation and a limited number of large simulations during dedicated application time; (3) operation of the new yana cluster to support a wide range of serial capacity simulations; (4) improvements to the reliability and performance of the Lustre parallel file system; (5) support for the new GDO petabyte-class storage facility on the green network for use in data intensive external collaborations; and (6) continued support for visualization and other methods for analyzing large simulations. We also recommend that M and IC begin planning in FY07 for the next upgrade of its parallel clusters. LLNL investments in M and IC have resulted in a world-class simulation capability leading to innovative science. We thank the LLNL management for its continued support and thank the M and IC staff for its vision and dedicated efforts to make it all happen.

  8. A Dual Method for Computing Power Transfer Distribution Factors

    E-Print Network [OSTI]

    Ronellenfitsch, Henrik; Witthaut, Dirk

    2015-01-01

    Power Transfer Distribution Factors (PTDFs) play a crucial role in power grid security analysis, planning, and redispatch. Fast calculation of the PTDFs is therefore of great importance. In this letter, we present a dual method of computing PTDFs. It uses power flows along topological cycles of the network but still relies on simple matrix algebra. For power grids containing a relatively small number of cycles, the method offers a significant speedup of numerical calculations.

  9. Practical Challenges when Implementing a Distributed Population of Cloud-Computing

    E-Print Network [OSTI]

    Practical Challenges when Implementing a Distributed Population of Cloud-Computing Simulators will soon appear. For example, we recently applied a genetic algorithm to steer a population of cloud-computing-- Computational steering, cloud computing, cluster computing, discrete event simulation, distributed systems

  10. From Thread to Transcontinental Computer: Disturbing Lessons in Distributed Supercomputing

    E-Print Network [OSTI]

    Groen, Derek

    2015-01-01

    We describe the political and technical complications encountered during the astronomical CosmoGrid project. CosmoGrid is a numerical study on the formation of large scale structure in the universe. The simulations are challenging due to the enormous dynamic range in spatial and temporal coordinates, as well as the enormous computer resources required. In CosmoGrid we dealt with the computational requirements by connecting up to four supercomputers via an optical network and make them operate as a single machine. This was challenging, if only for the fact that the supercomputers of our choice are separated by half the planet, as three of them are located scattered across Europe and fourth one is in Tokyo. The co-scheduling of multiple computers and the 'gridification' of the code enabled us to achieve an efficiency of up to $93\\%$ for this distributed intercontinental supercomputer. In this work, we find that high-performance computing on a grid can be done much more effectively if the sites involved are will...

  11. Automatic Symmetry Detection for Model Checking Using Computational Group Theory

    E-Print Network [OSTI]

    Donaldson, A.F.; Miller, A.

    Donaldson,A.F. Miller,A. Proceedings of the 13th International Symposium on Formal Methods Europe (FME 2005). Lecture Notes in Computing Science volume 3582. pp 481--496 Springer

  12. Monkey business : creating social awareness among distributed group members, using a network of animatronic agents

    E-Print Network [OSTI]

    Kern, Rachel Lori

    2006-01-01

    Members of a geographically distributed group are not normally aware of each other's presence or current activities. For example, two members of a team may be working on the same project, but they may have offices in ...

  13. Bio-Derived Liquids to Hydrogen Distributed Reforming Working Group Background Paper

    Broader source: Energy.gov [DOE]

    Paper by Arlene Anderson and Tracy Carole presented at the Bio-Derived Liquids to Hydrogen Distributed Reforming Working Group, with a focus on key drivers, purpose, and scope.

  14. A Coding Theorem for Bipartite Unitaries in Distributed Quantum Computation

    E-Print Network [OSTI]

    Eyuri Wakakuwa; Akihito Soeda; Mio Murao

    2015-05-17

    We analyze implementations of bipartite unitaries using local operations and classical communication (LOCC) assisted by shared entanglement. We employ concepts and techniques developed in quantum Shannon theory to study an asymptotic scenario in which the two distant parties perform the same bipartite unitary on infinitely many pairs of input states generated by a completely random i.i.d. (independent and identically distributed) quantum information source. We analyze the minimum costs of resources of entanglement and classical communication per copy. For protocols consisting of two-round LOCC, we prove that an achievable rate tuple of costs of entanglement and classical communication is given by the "Markovianizing cost" of a tripartite state associated with the unitary, which is conjectured to be optimal as well. We also propose a finite-step algorithm for computing the Markovianizing cost.

  15. The Robustness of Resource Allocation in Parallel and Distributed Computing Systems

    E-Print Network [OSTI]

    Maciejewski, Anthony A. "Tony"

    The Robustness of Resource Allocation in Parallel and Distributed Computing Systems Shoukat Ali on the robustness of a resource allocation in parallel and distributed computing systems. What does robustness mean." In the context of resource allocation in parallel and dis- tributed computing systems, how is the concept

  16. Providing nearest neighbor point-to-point communications among compute nodes of an operational group in a global combining network of a parallel computer

    DOE Patents [OSTI]

    Archer, Charles J.; Faraj, Ahmad A.; Inglett, Todd A.; Ratterman, Joseph D.

    2012-10-23

    Methods, apparatus, and products are disclosed for providing nearest neighbor point-to-point communications among compute nodes of an operational group in a global combining network of a parallel computer, each compute node connected to each adjacent compute node in the global combining network through a link, that include: identifying each link in the global combining network for each compute node of the operational group; designating one of a plurality of point-to-point class routing identifiers for each link such that no compute node in the operational group is connected to two adjacent compute nodes in the operational group with links designated for the same class routing identifiers; and configuring each compute node of the operational group for point-to-point communications with each adjacent compute node in the global combining network through the link between that compute node and that adjacent compute node using that link's designated class routing identifier.

  17. Consistent cloud computing storage as the basis for distributed applications

    E-Print Network [OSTI]

    Anderson, James William

    2011-01-01

    Messaging in Cloud Computing . . . . . . . . . .7 1.4Eucalyptus Open—Source Cloud—Computing System. In C'C&#http://www.eweek.com/c/a/Cloud-Computing/Amazons—Head—Start—

  18. Composition of Engineering Web Services with Distributed Data Flows and Computations

    E-Print Network [OSTI]

    Stanford University

    1 Composition of Engineering Web Services with Distributed Data Flows and Computations David Liu1 when integrating large engineering software services. Keywords Engineering web services; service, the computing environment is evolving toward an interconnected web of autonomous services, both inside

  19. Data-aware distributed scientific computing for big-data problems...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Data-aware distributed scientific computing for big-data problems in bio-surveillance Citation Details In-Document Search Title: Data-aware distributed scientific...

  20. Wireless Distributed Sensing and Computing in SDR based Radio Network -Implementation and

    E-Print Network [OSTI]

    Qiu, Robert Caiming

    Wireless Distributed Sensing and Computing in SDR based Radio Network - Implementation building the large scale cognitive radio network in TTU(Tennessee Technological University), a wireless). This network demonstrates the combination of the wireless distributed sensing applications with corresponding

  1. Scalable Database Access Technologies for ATLAS Distributed Computing

    E-Print Network [OSTI]

    A. Vaniachine; for the ATLAS Collaboration

    2009-10-02

    ATLAS event data processing requires access to non-event data (detector conditions, calibrations, etc.) stored in relational databases. The database-resident data are crucial for the event data reconstruction processing steps and often required for user analysis. A main focus of ATLAS database operations is on the worldwide distribution of the Conditions DB data, which are necessary for every ATLAS data processing job. Since Conditions DB access is critical for operations with real data, we have developed the system where a different technology can be used as a redundant backup. Redundant database operations infrastructure fully satisfies the requirements of ATLAS reprocessing, which has been proven on a scale of one billion database queries during two reprocessing campaigns of 0.5 PB of single-beam and cosmics data on the Grid. To collect experience and provide input for a best choice of technologies, several promising options for efficient database access in user analysis were evaluated successfully. We present ATLAS experience with scalable database access technologies and describe our approach for prevention of database access bottlenecks in a Grid computing environment.

  2. DISTRIBUTED SYSTEMS MANAGEMENT AS A GROUP ACTIVITY Graham Dean, Tom Rodden, Ian Sommerville and David Hutchison

    E-Print Network [OSTI]

    Sommerville, Ian

    commercial management packages provide low level information giving statistics on network load and trafficDISTRIBUTED SYSTEMS MANAGEMENT AS A GROUP ACTIVITY Graham Dean, Tom Rodden, Ian Sommerville@comp.lancs.ac.uk It is important to consider systems management as part of a whole organisational management strategy and, as such

  3. DISTRIBUTION OF SENSE-MAKING INSTANCES IN EACH ACTIVITY AND ACTIVITY SUB-SECTION, BY GROUP AND STUDENT

    E-Print Network [OSTI]

    Sandifer, Cody

    410 APPENDIX 4 DISTRIBUTION OF SENSE-MAKING INSTANCES IN EACH ACTIVITY AND ACTIVITY SUB for a clarification, prediction, etc. #12;411 Table A4-1. Distribution of sense-making instances for group 1-2. Distribution of sense-making instances for each group 1 student in activity 1 of cycle 3. Student CL P UE DDC

  4. Table I: Distribution Functions for Fuel Fractions Group 2L0 FL0 ( wL0

    E-Print Network [OSTI]

    Hallett, William L.H.

    Table I: Distribution Functions for Fuel Fractions Group 2L0 FL0 ( wL0 alcohols 55 20 0 0: Distribution fun ctions used to mod el the oil. Evaporation of Biomass Pyrolysis Oil Droplets - II W), and the composition of each of these groups is described by a gamma distribution function with mean 2L0, standard

  5. LoDN: Logistical Distribution Network Logistical Computing and Internetworking Laboratory

    E-Print Network [OSTI]

    Plank, Jim

    LoDN: Logistical Distribution Network Logistical Computing and Internetworking Laboratory Computer, Stephen Soltesz gelas@cs.utk.edu This paper introduces the Logistical Distributed Network (LoDN) tool and popularity [1]. Logistical Networking makes it possible to deploy a globally scalable storage service

  6. A distributed, graphical user interface based, computer control system for atomic physics experiments

    E-Print Network [OSTI]

    factor for jacket structures for offshore wind turbines in Rhode Island J. Renewable Sustainable Energy 4A distributed, graphical user interface based, computer control system for atomic physics OF SCIENTIFIC INSTRUMENTS 84, 015105 (2013) A distributed, graphical user interface based, computer control

  7. ADAPT: Availability-aware MapReduce Data Placement for Non-Dedicated Distributed Computing

    E-Print Network [OSTI]

    Sun, Xian-He

    ADAPT: Availability-aware MapReduce Data Placement for Non-Dedicated Distributed Computing Hui Jin for non-dedicated distributed computing environments. However, the variability of hosts resources replication degree are needed to promote the idea of running MapReduce applications in non-dedicated

  8. On Power Splitting Games in Distributed Computation: The Case of Bitcoin Pooled Mining

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    On Power Splitting Games in Distributed Computation: The Case of Bitcoin Pooled Mining Loi Luu to the Internet to participate in a game in which he splits his computational power among a set of competing pools -- the game is called a computational power splitting game. We formally model this game and show its utility

  9. IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS 2014 1 Computing Nash Equilibria in Bimatrix Games

    E-Print Network [OSTI]

    Grosu, Daniel

    IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS 2014 1 Computing Nash Equilibria in Bimatrix, Student Member, IEEE, and Daniel Grosu, Senior Member, IEEE Abstract--Computing Nash equilibria is a very enumeration algorithm for computing Nash equilibria in bimatrix games. The algorithm is based on a new

  10. Fuzzy Computing Applications for Anti-Money Laundering and Distributed Storage System Load

    E-Print Network [OSTI]

    Cortes, Corinna

    1 Fuzzy Computing Applications for Anti-Money Laundering and Distributed Storage System Load for computation. In particular, fuzzy logic allows us to use linguistic variables to model dynamic systems {ytchen, johmathe}@google.com Abstract--Fuzzy computing (FC) has made a great impact in capturing human

  11. Distributed Asymmetric Verification in Computational Grids Michael Kuhn, Stefan Schmid, Roger Wattenhofer

    E-Print Network [OSTI]

    Distributed Asymmetric Verification in Computational Grids Michael Kuhn, Stefan Schmid, Roger Wattenhofer Computer Engineering and Networks Laboratory (TIK) ETH Zurich CH-8092 Zurich, Switzerland {kuhnmi,schmiste,wattenhofer}@tik.ee.ethz.ch Abstract Lucrative incentives in grid computing do not only at- tract honest participants, but also

  12. Proceedings of the 3rd International Workshop on Distributed Statistical Computing (DSC 2003)

    E-Print Network [OSTI]

    Rostock, Universität

    for microarray data analysis implemented in several programming languages (e.g. R, MATLAB, Java) by differentProceedings of the 3rd International Workshop on Distributed Statistical Computing (DSC 2003) March statistical and computational methods are required. An example of the effort of statisticians and computer

  13. Distributively generated near rings on the dihedral group of order eight 

    E-Print Network [OSTI]

    Willhite, Mary Lynn

    1970-01-01

    (~ ~@mbezeb Decemh. -. 1970 ABSTRACT Distributively Gene' ated Near Rings on the Dihedral Group of Order Eight. (December 1)70) Mary lynn Willhite, B. A. , Texas Christian University; Directed by: Dr. J. J. Malone, Jr. In this thesis, observations... OF TABLES TABLE 1 . THE DIHEDRAL GROUP D 2. THE ENDONORPHTSNS OF D Page 9 10 POSSIBLE KJLTIPLICATIONS FOR P=~ O, bi. . . 1$ 4-. POSSIBLE IIULTIPLICATIONS FOR P={ 0, 2a] . . . 18 5. AS OCIATIUE KH TIPLICATIONS FOR P=f0, 2a, b, 2a+b...

  14. Lecture Notes in Computer Science 1 Distributed Problem Solving and Planning

    E-Print Network [OSTI]

    Blythe, Jim

    Lecture Notes in Computer Science 1 Distributed Problem Solving and Planning Edmund H. Durfee1@umich.edu Abstract. Distributed problem solving involves the collective effort of multiple problems solvers could not have solved as well (if at all) alone. The challenge in distributed problem solving is thus

  15. Using Multi-user Distributed Virtual Environments in Education Computer Technology Institute

    E-Print Network [OSTI]

    Using Multi-user Distributed Virtual Environments in Education Ch. Bouras Computer Technology and distributed virtual environments. The communicative character of the distributed virtual environments would and tutorials. Such technologies may mitigate some of the problems of isolation that distance learning brings

  16. 6.824 Distributed Computer Systems, Fall 2002

    E-Print Network [OSTI]

    Morris, Robert Tappan

    Abstractions and implementation techniques for design of distributed systems; server design, network programming, naming, storage systems, security, and fault tolerance. Readings from current literature. 6 Engineering ...

  17. To appear in Energy Efficient Distributed Computing Systems, Editors: A. Zomaya and Y-C Lee, Wiley-IEEE Computer Society Press, Aug. 2012 and Massoud Pedram2

    E-Print Network [OSTI]

    Pedram, Massoud

    To appear in Energy Efficient Distributed Computing Systems, Editors: A. Zomaya and Y-C Lee, Wiley #12;To appear in Energy Efficient Distributed Computing Systems, Editors: A. Zomaya and Y-C Lee, Wiley................................................................................................................................................19 #12;To appear in Energy Efficient Distributed Computing Systems, Editors: A. Zomaya and Y-C Lee

  18. On Self-Assembling Graphs in vitro The Molecular Computing Group

    E-Print Network [OSTI]

    Deaton, Russell J.

    On Self-Assembling Graphs in vitro The Molecular Computing Group Max H. Garzon, Rusell J. Deaton in vitro by self-regulating molecular processes. This type of structure, the so-called automatic graphs how the navigator can be implemented as a moleculethat directs the self-assembly process to build

  19. Consistent cloud computing storage as the basis for distributed applications

    E-Print Network [OSTI]

    Anderson, James William

    2011-01-01

    and authentication for security. Currently, cloud servicecloud computing applications share certain com- mon requirements of scalability, performance, availability, reliability, security,security, and e?iciency poses sig- ni?cant challenges. The cloud

  20. Duration distributions for different softness groups of gamma-ray bursts

    E-Print Network [OSTI]

    Y. -P. Qin; A. C. Gupta; J. H. Fan; C. -Y. Su; R. -J. Lu

    2010-10-10

    Gamma-ray bursts (GRBs) are divided into two classes according to their durations. We investigate if the softness of bursts plays a role in the conventional classification of the objects. We employ the BATSE (Burst and Transient Source Experiment) catalog and analyze the duration distributions of different groups of GRBs associated with distinct softness. Our analysis reveals that the conventional classification of GRBs with the duration of bursts is influenced by the softness of the objects. There exits a bimodality in the duration distribution of GRBs for each group of bursts and the time position of the dip in the bimodality histogram shifts with the softness parameter. Our findings suggest that the conventional classification scheme should be modified by separating the two well-known populations in different softness groups, which would be more reasonable than doing so with a single sample. According to the relation between the dip position and the softness parameter, we get an empirical function that can roughly set apart the short-hard and long-soft bursts: $SP = (0.100 \\pm 0.028) T_{90}^{-(0.85 \\pm 0.18)}$, where $SP$ is the softness parameter adopted in this paper.

  1. The Parallel and Distributed Algorithms This chapter contains a brief review of both parallel and distributed computing,

    E-Print Network [OSTI]

    Goddard III, William A.

    146 Chapter VI The Parallel and Distributed Algorithms #12; 147 Abstract This chapter contains of concurrent computing. Based on the resonance method and program design described in Chapter V, an algorithm algorithm lends itself to effective parallelization. The main requirement for effective parallelization

  2. A Computational Market Model for Distributed Configuration Design Michael P. Wellman

    E-Print Network [OSTI]

    Wellman, Michael P.

    economies" constitutes the market solution to the original problem. After defining the configuration design. Consider a hyper-simplified scenario in aircraft design. (We choose this not as a serious exemplar ¡ ¢ £ £ ¤ ¢ ¥ ¦ § ¨ © ¨ A Computational Market Model for Distributed Configuration

  3. VIP-FS: A Virtual, Parallel file System for High Performance Parallel and Distributed Computing *

    E-Print Network [OSTI]

    -passing li- blclries only provide part of the support necessary for most high performan.ce distributed computing applzca- tzcjns - support for hagh speed parallel l/O is still lark- 211q. In this paper, we

  4. Modelling Photochemical Pollution using Parallel and Distributed Computing Platforms

    E-Print Network [OSTI]

    Abramson, David

    of photochemical air pollution (smog) in industrialised cities. However, computational hardware demands can that have been used as part of an air pollution study being conducted in Melbourne, Australia. We also necessary to perform real air pollution studies. The system is used as part of the Melbourne Airshed study

  5. Distributed Symmetric Function Computation in Noisy Wireless Sensor Networks

    E-Print Network [OSTI]

    Srikant, Rayadurgam

    . The network has a special node called the fusion center whose goal is to compute a symmetric function of these measurements. The problem studied is to minimize the total transmission energy used by the network when, and that each sensor uses r units of energy to transmit each bit, where r is the transmission range

  6. Massivizing Online Games:g Distributed Computing Challenges and

    E-Print Network [OSTI]

    Langendoen, Koen

    used to be art, may now be computing Online Gaming used to be multimedia is now DC g , y p g Online ­ the Netherlands ­ Europe( ) op founded 13th century pop: 100,000 pop.: 100,000 pop:16.5 M founded 1842 pop: 13

  7. Optimizing Performance and Reliability in Distributed Computing Systems Through Wide Spectrum Storage

    E-Print Network [OSTI]

    Dongarra, Jack

    of Energy un- der grant DE-FC02-01ER25465. file system. Logistical Networking, the core of our proposalOptimizing Performance and Reliability in Distributed Computing Systems Through Wide Spectrum. 1 Introduction Over the past two decades the exponential growth in available computing resources has

  8. A Multi-core High Performance Computing Framework for Distribution Power Flow

    E-Print Network [OSTI]

    Franchetti, Franz

    for future computing hardware / software design. Motivated by the practical computation perfor- mance demands-phase unbalanced parameters, high R/X ratio and radial structure [1] [2] [3]. With the recent development of smart grid technologies and integration of renewable energy resources into distribution system

  9. Configurable and Adaptive Middleware for Energy-Efficient Distributed Mobile Computing

    E-Print Network [OSTI]

    Ryder, Barbara G.

    Configurable and Adaptive Middleware for Energy-Efficient Distributed Mobile Computing Young Department of Computer Science, Virginia Tech tilevich@cs.vt.edu Abstract. The energy demands of modern mobile devices are outstrip- ping their battery lives. As a result, energy efficiency--fitting an energy

  10. The ATLAS Distributed Computing project for LHC Run-2 and beyond.

    E-Print Network [OSTI]

    Di Girolamo, Alessandro; The ATLAS collaboration

    2015-01-01

    The ATLAS Distributed Computing infrastructure has evolved after the first period of LHC data taking in order to cope with the challenges of the upcoming LHC Run2. An increased data rate and computing demands of the Monte-Carlo simulation, as well as new approaches to ATLAS analysis, dictated a more dynamic workload management system (ProdSys2) and data management system (Rucio), overcoming the boundaries imposed by the design of the old computing model. In particular, the commissioning of new central computing system components was the core part of the migration toward the flexible computing model. The flexible computing utilization exploring the opportunistic resources such as HPC, cloud, and volunteer computing is embedded in the new computing model, the data access mechanisms have been enhanced with the remote access, and the network topology and performance is deeply integrated into the core of the system. Moreover a new data management strategy, based on defined lifetime for each dataset, has been defin...

  11. DARD: Distributed Adaptive Routing for Datacenter Networks Dept. of Computer Science, Duke University

    E-Print Network [OSTI]

    Yang, Xiaowei

    DARD: Distributed Adaptive Routing for Datacenter Networks Xin Wu Dept. of Computer Science, Duke xwy@cs.duke.edu Abstract--Datacenter networks typically have many paths connecting each host pair, a Distributed Adaptive Routing architecture for Datacenter networks. DARD allows each end host to move traffic

  12. A distributed scientific visualization paradigm for heterogeneous computer networks 

    E-Print Network [OSTI]

    Lenox, Mark Wayne

    1990-01-01

    hardware product called VX/MVX that uses multiple processors to perform visualization tasks [33]. It is not a heterogeneous distributed environment, however, in that all the processors are located within a single Sun workstation, as shown below in figure... pipeline, and minimization of supercomputer re- source demand are all design features of apE [17]. apE, which stands for animation production Environment, abstracts data in the form of the FLUX language [17]. FLUX has built in capabilities that make...

  13. Configuring compute nodes of a parallel computer in an operational group into a plurality of independent non-overlapping collective networks

    DOE Patents [OSTI]

    Archer, Charles J. (Rochester, MN); Inglett, Todd A. (Rochester, MN); Ratterman, Joseph D. (Rochester, MN); Smith, Brian E. (Rochester, MN)

    2010-03-02

    Methods, apparatus, and products are disclosed for configuring compute nodes of a parallel computer in an operational group into a plurality of independent non-overlapping collective networks, the compute nodes in the operational group connected together for data communications through a global combining network, that include: partitioning the compute nodes in the operational group into a plurality of non-overlapping subgroups; designating one compute node from each of the non-overlapping subgroups as a master node; and assigning, to the compute nodes in each of the non-overlapping subgroups, class routing instructions that organize the compute nodes in that non-overlapping subgroup as a collective network such that the master node is a physical root.

  14. Computational study of ion distributions at the air/liquid methanol interface

    SciTech Connect (OSTI)

    Sun, Xiuquan; Wick, Collin D.; Dang, Liem X.

    2011-06-16

    Molecular dynamic simulations with polarizable potentials were performed to systematically investigate the distribution of NaCl, NaBr, NaI, and SrCl2 at the air/liquid methanol interface. The density profiles indicated that there is no substantial enhancement of anions at the interface for the NaX systems in contrast to what was observed at the air/aqueous interface. The surfactant-like shape of the larger more polarizable halide anions is compensated by the surfactant nature of methanol itself. As a result, methanol hydroxy groups strongly interacted with one side of polarizable anions, in which their induced dipole points, and methanol methyl groups were more likely to be found near the positive pole of anion induced dipoles. Furthermore, salts were found to disrupt the surface structure of methanol, reducing the observed enhancement of methyl groups at the outer edge of the air/liquid methanol interface. With the additional of salts to methanol, the computed surface potentials increased, which is in contrast to what is observed in corresponding aqueous systems, where the surface potential decreases with the addition of salts. Both of these trends have been indirectly observed with experiments. This was found to be due to the propensity of anions for the air/water interface that is not present at the air/liquid methanol interface. This work was supported by the US Department of Energy Basic Energy Sciences' Chemical Sciences, Geosciences & Biosciences Division. Pacific Northwest National Laboratory is operated by Battelle for the US Department of Energy.

  15. As the need for data explodes with the passage of time and the increase of computing power, data storage becomes more and more important. Distributed storage, as distributed

    E-Print Network [OSTI]

    Bruck, Jehoshua (Shuki)

    Æciency in distributed storage systems. This thesis consists of two parts. The #12;rst part deals with the reliability of distributed storage systems. Reliability is achieved by computationally eÆcient MDS array codes that eliminate in distributed storage systems. The second part deals with the eÆciency of distributed storage systems. Methods

  16. Bio-Derived Liquids to Hydrogen Distributed Reforming Working Group (BILIWG) Kick-Off Meeting Proceedings Hilton Garden Inn-BWI,Baltimore, MD October 24, 2006

    Broader source: Energy.gov [DOE]

    Proceedings from the October 24, 2006 Bio-Derived Liquids to Hydrogen Distributed Reforming Working Group Kick-Off Meeting.

  17. Probing the structure of complex solids using a distributed computing approach-Applications in zeolite science

    SciTech Connect (OSTI)

    French, Samuel A.; Coates, Rosie; Lewis, Dewi W.; Catlow, C. Richard A.

    2011-06-15

    We demonstrate the viability of distributed computing techniques employing idle desktop computers in investigating complex structural problems in solids. Through the use of a combined Monte Carlo and energy minimisation method, we show how a large parameter space can be effectively scanned. By controlling the generation and running of different configurations through a database engine, we are able to not only analyse the data 'on the fly' but also direct the running of jobs and the algorithms for generating further structures. As an exemplar case, we probe the distribution of Al and extra-framework cations in the structure of the zeolite Mordenite. We compare our computed unit cells with experiment and find that whilst there is excellent correlation between computed and experimentally derived unit cell volumes, cation positioning and short-range Al ordering (i.e. near neighbour environment), there remains some discrepancy in the distribution of Al throughout the framework. We also show that stability-structure correlations only become apparent once a sufficiently large sample is used. - Graphical Abstract: Aluminium distributions in zeolites are determined using e-science methods. Highlights: > Use of e-science methods to search configurationally space. > Automated control of space searching. > Identify key structural features conveying stability. > Improved correlation of computed structures with experimental data.

  18. Computing stationary distributions in equilibrium and non-equilibrium systems with Forward Flux Sampling

    E-Print Network [OSTI]

    Chantal Valeriani; Rosalind J. Allen; Marco J. Morelli; Daan Frenkel; Pieter Rein ten Wolde

    2009-07-03

    We present a method for computing stationary distributions for activated processes in equilibrium and non-equilibrium systems using Forward Flux Sampling (FFS). In this method, the stationary distributions are obtained directly from the rate constant calculations for the forward and backward reactions; there is no need to perform separate calculations for the stationary distribution and the rate constant. We apply the method to the non-equilibrium rare event problem proposed by Maier and Stein, to nucleation in a 2-dimensional Ising system, and to the flipping of a genetic switch.

  19. A distributed architecture for scalable quantum computation with realistically noisy devices

    E-Print Network [OSTI]

    Keisuke Fujii; Takashi Yamamoto; Masato Koashi; Nobuyuki Imoto

    2012-02-29

    Tremendous efforts have been paid for realization of fault-tolerant quantum computation so far. However, preexisting fault-tolerant schemes assume that a lot of qubits live together in a single quantum system, which is incompatible with actual situations of experiment. Here we propose a novel architecture for practically scalable quantum computation, where quantum computation is distributed over small-size (four-qubit) local systems, which are connected by quantum channels. We show that the proposed architecture works even with the error probability 0.1% of local operations, which breaks through the consensus by one order of magnitude. Furthermore, the fidelity of quantum channels can be very low $\\sim$ 0.7, which substantially relaxes the difficulty of scaling-up the architecture. All key elements and their accuracy required for the present architecture are within reach of current technology. The present architecture allows us to achieve efficient scaling of quantum computer, as has been achieved in today's classical computer.

  20. Environmental control of conodont distribution in the Shawnee Group (Upper Pennsylvanian) of eastern Kansas

    E-Print Network [OSTI]

    von Bitter, P. H.

    1972-11-10

    in species groups 49 Sample group A, nearshore shale biotope 31 SUMMARY 49 PAGE PAGE SYSTEMATIC PALEONTOLOGY 51 Genus Hindeodus Rexroad & Furnish, 1964 79 Introduction 51 Unidentified Ne element 79 Order Conodontophorida Eichenberg, 1930 51... included in sample group A (nearshore shale biotope) 36 8. Comparison of samples included in sample group B (offshore limestone biotope) 36 9. Comparison of samples included in sample group C 10. Comparison of samples included in sample group D...

  1. CHP and CHPsim: A Language and Simulator for Fine-Grain Distributed Computation

    E-Print Network [OSTI]

    Martin, Alain

    1 CHP and CHPsim: A Language and Simulator for Fine-Grain Distributed Computation Alain J. Martin Abstract--This paper describes a complete and stable version of CHP and the simulator CHPsim. CHP partial versions of the language are already widely used, but CHP has never been presented as a complete

  2. Computing Reliability Distributions of Windowed Max-log-map (MLM) Detectors : ISI Channels

    E-Print Network [OSTI]

    Kavcic, Aleksandar

    Computing Reliability Distributions of Windowed Max-log-map (MLM) Detectors : ISI Channels Fabian-log-map (MLM) detector has well-known appli- cations to the intersymbol interefence (ISI) channel [1, · · · , is trans- mitted across the ISI channel. Let the following random This work was performed when F. Lim

  3. Simulations of Ozone Distributions in an Aircraft Cabin Using Computational Fluid1 Aakash C. Rai1

    E-Print Network [OSTI]

    Chen, Qingyan "Yan"

    Simulations of Ozone Distributions in an Aircraft Cabin Using Computational Fluid1 Dynamics2 3 10 Ozone is a major pollutant of indoor air. Many studies have demonstrated the adverse health effect of11 ozone and the byproducts generated as a result of ozone-initiated reactive chemistry

  4. On Computing Mobile Agent Routes for Data Fusion in Distributed Sensor Networks

    E-Print Network [OSTI]

    Chakrabarty, Krishnendu

    such as adequate detection energy for target detection or tracking. In conventional fusion architectures, allOn Computing Mobile Agent Routes for Data Fusion in Distributed Sensor Networks Qishi Wu, Member strength and inversely proportional to the path loss and energy consumption. We show this problem to be NP

  5. Validating computed grain boundary energies in fcc metals using the grain boundary character distribution

    E-Print Network [OSTI]

    Rohrer, Gregory S.

    Validating computed grain boundary energies in fcc metals using the grain boundary character. Since the GBCD is inversely related to the grain boundary energy distribution, it offers a useful metric for validating grain boundary energy calculations. Comparisons between the measured GBCD and calculated energies

  6. Acidity of the amidoxime functional group in aqueous solution. A combined experimental and computational study

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Mehio, Nada; Lashely, Mark A.; Nugent, Joseph W.; Tucker, Lyndsay; Correia, Bruna; Do-Thanh, Chi-Linh; Dai, Sheng; Hancock, Robert D.; Bryantsev, Vyacheslav S.

    2015-01-26

    Poly(acrylamidoxime) adsorbents are often invoked in discussions of mining uranium from seawater. It has been demonstrated repeatedly in the literature that the success of these materials is due to the amidoxime functional group. While the amidoxime-uranyl chelation mode has been established, a number of essential binding constants remain unclear. This is largely due to the wide range of conflicting pKa values that have been reported for the amidoxime functional group in the literature. To resolve this existing controversy we investigated the pKa values of the amidoxime functional group using a combination of experimental and computational methods. Experimentally, we used spectroscopicmore »titrations to measure the pKa values of representative amidoximes, acetamidoxime and benzamidoxime. Computationally, we report on the performance of several protocols for predicting the pKa values of aqueous oxoacids. Calculations carried out at the MP2 or M06-2X levels of theory combined with solvent effects calculated using the SMD model provide the best overall performance with a mean absolute error of 0.33 pKa units and 0.35 pKa units, respectively, and a root mean square deviation of 0.46 pKa units and 0.45 pKa units, respectively. Finally, we employ our two best methods to predict the pKa values of promising, uncharacterized amidoxime ligands. Hence, our study provides a convenient means for screening suitable amidoxime monomers for future generations of poly(acrylamidoxime) adsorbents used to mine uranium from seawater.« less

  7. Methods and apparatuses for information analysis on shared and distributed computing systems

    DOE Patents [OSTI]

    Bohn, Shawn J [Richland, WA; Krishnan, Manoj Kumar [Richland, WA; Cowley, Wendy E [Richland, WA; Nieplocha, Jarek [Richland, WA

    2011-02-22

    Apparatuses and computer-implemented methods for analyzing, on shared and distributed computing systems, information comprising one or more documents are disclosed according to some aspects. In one embodiment, information analysis can comprise distributing one or more distinct sets of documents among each of a plurality of processes, wherein each process performs operations on a distinct set of documents substantially in parallel with other processes. Operations by each process can further comprise computing term statistics for terms contained in each distinct set of documents, thereby generating a local set of term statistics for each distinct set of documents. Still further, operations by each process can comprise contributing the local sets of term statistics to a global set of term statistics, and participating in generating a major term set from an assigned portion of a global vocabulary.

  8. A grid-enabled MPI : message passing in heterogeneous distributed computing systems.

    SciTech Connect (OSTI)

    Foster, I.; Karonis, N. T.

    2000-11-30

    Application development for high-performance distributed computing systems, or computational grids as they are sometimes called, requires grid-enabled tools that hide mundate aspects of the heterogeneous grid environment without compromising performance. As part of an investigation of these issues, they have developed MPICH-G, a grid-enabled implementation of the Message Passing Interface (MPI) that allows a user to run MPI programs across multiple computers at different sites using the same commands that would be used on a parallel computer. This library extends the Argonne MPICH implementation of MPI to use services provided by the globus grid toolkit. In this paper, they describe the MPICH-G implementation and present preliminary performance results.

  9. Chen, Yang, and Chen, 2005, Journal of Geographic Information Science, 11(1):61-70 EVOLUTION AND COMPUTING CHALLENGES OF DISTRIBUTED GIS

    E-Print Network [OSTI]

    Chen, Songqing

    AND COMPUTING CHALLENGES OF DISTRIBUTED GIS X. Mara Chen Department of Geography & Geosciences Henson School(1):61-70 EVOLUTION AND COMPUTING CHALLENGES OF DISTRIBUTED GIS Abstract As a new development based on GIS and distributed computing, Distributed GIS (DGIS) was introduced and propelled by both the demands for GIS

  10. AN ECONOMICS-BASED POWER-AWARE PROTOCOL FOR COMPUTATION DISTRIBUTION IN MOBILE AD-HOC NETWORKS

    E-Print Network [OSTI]

    Shang, Li

    AN ECONOMICS-BASED POWER-AWARE PROTOCOL FOR COMPUTATION DISTRIBUTION IN MOBILE AD-HOC NETWORKS Li, Princeton, NJ 08544, USA ABSTRACT In this paper, we present a new economics-based power- aware protocol, called the distributed economic subcontracting protocol (DESP), that dynamically distributes task

  11. System design and algorithmic development for computational steering in distributed environments

    SciTech Connect (OSTI)

    Wu, Qishi; Zhu, Mengxia; Gu, Yi; Rao, Nageswara S

    2010-03-01

    Supporting visualization pipelines over wide-area networks is critical to enabling large-scale scientific applications that require visual feedback to interactively steer online computations. We propose a remote computational steering system that employs analytical models to estimate the cost of computing and communication components and optimizes the overall system performance in distributed environments with heterogeneous resources. We formulate and categorize the visualization pipeline configuration problems for maximum frame rate into three classes according to the constraints on node reuse or resource sharing, namely no, contiguous, and arbitrary reuse. We prove all three problems to be NP-complete and present heuristic approaches based on a dynamic programming strategy. The superior performance of the proposed solution is demonstrated with extensive simulation results in comparison with existing algorithms and is further evidenced by experimental results collected on a prototype implementation deployed over the Internet.

  12. High Energy Physics Forum for Computational Excellence: Working Group Reports (I. Applications Software II. Software Libraries and Tools III. Systems)

    E-Print Network [OSTI]

    Habib, Salman; LeCompte, Tom; Marshall, Zach; Borgland, Anders; Viren, Brett; Nugent, Peter; Asai, Makoto; Bauerdick, Lothar; Finkel, Hal; Gottlieb, Steve; Hoeche, Stefan; Sheldon, Paul; Vay, Jean-Luc; Elmer, Peter; Kirby, Michael; Patton, Simon; Potekhin, Maxim; Yanny, Brian; Calafiura, Paolo; Dart, Eli; Gutsche, Oliver; Izubuchi, Taku; Lyon, Adam; Petravick, Don

    2015-01-01

    Computing plays an essential role in all aspects of high energy physics. As computational technology evolves rapidly in new directions, and data throughput and volume continue to follow a steep trend-line, it is important for the HEP community to develop an effective response to a series of expected challenges. In order to help shape the desired response, the HEP Forum for Computational Excellence (HEP-FCE) initiated a roadmap planning activity with two key overlapping drivers -- 1) software effectiveness, and 2) infrastructure and expertise advancement. The HEP-FCE formed three working groups, 1) Applications Software, 2) Software Libraries and Tools, and 3) Systems (including systems software), to provide an overview of the current status of HEP computing and to present findings and opportunities for the desired HEP computational roadmap. The final versions of the reports are combined in this document, and are presented along with introductory material.

  13. High Energy Physics Forum for Computational Excellence: Working Group Reports (I. Applications Software II. Software Libraries and Tools III. Systems)

    E-Print Network [OSTI]

    Salman Habib; Robert Roser; Tom LeCompte; Zach Marshall; Anders Borgland; Brett Viren; Peter Nugent; Makoto Asai; Lothar Bauerdick; Hal Finkel; Steve Gottlieb; Stefan Hoeche; Paul Sheldon; Jean-Luc Vay; Peter Elmer; Michael Kirby; Simon Patton; Maxim Potekhin; Brian Yanny; Paolo Calafiura; Eli Dart; Oliver Gutsche; Taku Izubuchi; Adam Lyon; Don Petravick

    2015-10-29

    Computing plays an essential role in all aspects of high energy physics. As computational technology evolves rapidly in new directions, and data throughput and volume continue to follow a steep trend-line, it is important for the HEP community to develop an effective response to a series of expected challenges. In order to help shape the desired response, the HEP Forum for Computational Excellence (HEP-FCE) initiated a roadmap planning activity with two key overlapping drivers -- 1) software effectiveness, and 2) infrastructure and expertise advancement. The HEP-FCE formed three working groups, 1) Applications Software, 2) Software Libraries and Tools, and 3) Systems (including systems software), to provide an overview of the current status of HEP computing and to present findings and opportunities for the desired HEP computational roadmap. The final versions of the reports are combined in this document, and are presented along with introductory material.

  14. REVIEW OF TAXONOMY AND DISTRIBUTION OF THE Eirenis medus GROUP (CHERNOV, 1940) (OPHIDIA: COLUBRIDAE) WITH DESCRIPTION

    E-Print Network [OSTI]

    and northeastern Iran) and Eirenis me- dus group (Nos. 3, 4, and 5 through the Zagros mountains and adjacent areas the Zagros mountains and adjacent areas or were identified in the collections by the authors. Their taxonomy

  15. Reinforcement learning for qualitative group behaviours applied to non-player computer game characters 

    E-Print Network [OSTI]

    Bradley, Jay

    2010-01-01

    This thesis investigates how to train the increasingly large cast of characters in modern commercial computer games. Modern computer games can contain hundreds or sometimes thousands of non-player characters that each ...

  16. A dynamic grouping strategy for implementation of the particle filter on a massively parallel computer

    E-Print Network [OSTI]

    Nakano, Shin'ya

    computer Shin'ya Nakano The Institute of Statistical Mathematics Tachikawa, Tokyo, Japan. shiny@ism.ac.jp Abstract ­ A practical way to implement the parti- cle filter (PF) on a massively parallel computer is dis to be computation- ally expensive in applying to high-dimensional problems because a enormous number of particles

  17. Parallel and Distributed Computing Systems (PDCS) 2007, Cambridge, MA21 Nov 2007 1 The Impact of Error in User-Provided

    E-Print Network [OSTI]

    Jones, William Michael

    Parallel and Distributed Computing Systems (PDCS) 2007, Cambridge, MA21 Nov 2007 1 The Impact://www.parl.clemson.edu/beosim #12;Parallel and Distributed Computing Systems (PDCS) 2007, Cambridge, MA21 Nov 2007 2 Multi-site Co-allocation #12;Parallel and Distributed Computing Systems (PDCS) 2007, Cambridge, MA21 Nov 2007 3 Scheduling w

  18. CHANGES IN SANDSTONE DISTRIBUTIONS BETWEEN THE UPPER, MIDDLE, AND LOWER FAN IN THE ARKANSAS JACKFORK GROUP 

    E-Print Network [OSTI]

    Mack, Clayton P.

    2010-07-14

    outcrops, it is clear there is an obvious change in the sandstone percentage and distribution. The upper fan deposit has an overall sandstone percentage of approximately 77.5% and is deposited in beds that are mainly amalgamated; 10-30m thick. Sandstone...

  19. JOURNAL OF LATEX CLASS FILES, VOL. 6, NO. 1, JANUARY 2007 1 Distributed Group Authentication for

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Frequency Identification) based product identification system for inventory and sup- ply management into RFID supply-chain management systems. Index Terms--Distributed RFID systems, supply-chain management to objects to be identified; ii) readers or interrogators, which manage tag population, read data from

  20. High-Performance Computation of Distributed-Memory Parallel 3D Voronoi and Delaunay Tessellation

    SciTech Connect (OSTI)

    Peterka, Tom; Morozov, Dmitriy; Phillips, Carolyn

    2014-11-14

    Computing a Voronoi or Delaunay tessellation from a set of points is a core part of the analysis of many simulated and measured datasets: N-body simulations, molecular dynamics codes, and LIDAR point clouds are just a few examples. Such computational geometry methods are common in data analysis and visualization; but as the scale of simulations and observations surpasses billions of particles, the existing serial and shared-memory algorithms no longer suffice. A distributed-memory scalable parallel algorithm is the only feasible approach. The primary contribution of this paper is a new parallel Delaunay and Voronoi tessellation algorithm that automatically determines which neighbor points need to be exchanged among the subdomains of a spatial decomposition. Other contributions include periodic and wall boundary conditions, comparison of our method using two popular serial libraries, and application to numerous science datasets.

  1. Network coding for distributed quantum computation over cluster and butterfly networks

    E-Print Network [OSTI]

    Seiseki Akibue; Mio Murao

    2015-03-26

    To apply network coding for quantum computation, we study the distributed implementation of unitary operations over all separated input and output nodes of quantum networks. We consider a setting of networks where quantum communication between nodes is restricted to sending just a qubit, but classical communication is unrestricted. We analyze which N-qubit unitary operations are implementable over cluster networks by investigating transformations of a given cluster network into quantum circuits. We show that any two-qubit unitary operation is implementable over the butterfly network and the grail network, which are fundamental primitive networks for classical network coding. We also analyze probabilistic implementations of unitary operations over cluster networks.

  2. 2011 DoD High Performance Computing Modernization Program Users Group Conference A Web-based High-Throughput Tool for Next-Generation Sequence Annotation

    E-Print Network [OSTI]

    320 2011 DoD High Performance Computing Modernization Program Users Group Conference A Web deployed on the Mana Linux cluster at the Maui High Performance Computing Center. The two components

  3. Optimal Well-Group Distribution of a Groundwater Source Heat Pump System 

    E-Print Network [OSTI]

    Liu, Z.; Lu, L.; Yoshida, H.

    2006-01-01

    the streamline analysis method and doing a quantitative analysis of the effects that inter-well distance and flux have on it. We discuss the well group arrangement and puts forward optimal scheme by means of the thermal diffusion and streamline simulation....

  4. The Well-Group Distribution of Groundwater Source Heat Pump System Optimized Research 

    E-Print Network [OSTI]

    Liu, Z.; Lu, L.; Yoshida, H.

    2006-01-01

    It is the key question that how does the well group arrange for application of GWSHP system. Based on the fact that the water movement is the important factor of heat transfer on aquifer, this paper presents two steps analysis method and analyze...

  5. Mobile Collaboration Environment for u-Healthcare Based on Distributed Object Group Framework

    E-Print Network [OSTI]

    Joo, Su-Chong

    mobile devices, and designed and implemented a healthcare application service over it. Our mobile elements, such as groups of sensors, mobile devices and a home server. Here, mobile devices(e.g. PDAs) are divided into two types; the fixed and the moving-typed mobile devices. The information collected

  6. Computability in Anonymous Networks: Revocable vs. Irrecovable Outputs

    E-Print Network [OSTI]

    Computability in Anonymous Networks: Revocable vs. Irrecovable Outputs Yuval Emek 1 Jochen Seidel 2 Zurich ­ Distributed Computing Group ­ www.disco.ethz.ch #12;Anonymous Networks #12;Computability in Anonymous Networks #12;Computability in Anonymous Networks Computable Not Computable #12;Computability

  7. 16th Department of Energy Computer Security Group Training Conference: Proceedings

    SciTech Connect (OSTI)

    Not Available

    1994-04-01

    Various topic on computer security are presented. Integrity standards, smartcard systems, network firewalls, encryption systems, cryptography, computer security programs, multilevel security guards, electronic mail privacy, the central intelligence agency, internet security, and high-speed ATM networking are typical examples of discussed topics. Individual papers are indexed separately.

  8. System and method for secure group transactions

    DOE Patents [OSTI]

    Goldsmith, Steven Y. (Rochester, MN)

    2006-04-25

    A method and a secure system, processing on one or more computers, provides a way to control a group transaction. The invention uses group consensus access control and multiple distributed secure agents in a network environment. Each secure agent can organize with the other secure agents to form a secure distributed agent collective.

  9. Safety Analysis and Certification of Open Distributed Systems P. M. Conmy; Department of Computer Science, University of York, York, YO10 5DD U.K.

    E-Print Network [OSTI]

    Nicholson, Mark

    Safety Analysis and Certification of Open Distributed Systems P. M. Conmy; Department of Computer system is a network of computer modules upon which one or more computer applications can run and inter to the safety analysis and certification of avionics computer systems. At present aircraft computing systems are

  10. Integrated Computing, Communication, and Distributed Control of Deregulated Electric Power Systems

    SciTech Connect (OSTI)

    Bajura, Richard; Feliachi, Ali

    2008-09-24

    Restructuring of the electricity market has affected all aspects of the power industry from generation to transmission, distribution, and consumption. Transmission circuits, in particular, are stressed often exceeding their stability limits because of the difficulty in building new transmission lines due to environmental concerns and financial risk. Deregulation has resulted in the need for tighter control strategies to maintain reliability even in the event of considerable structural changes, such as loss of a large generating unit or a transmission line, and changes in loading conditions due to the continuously varying power consumption. Our research efforts under the DOE EPSCoR Grant focused on Integrated Computing, Communication and Distributed Control of Deregulated Electric Power Systems. This research is applicable to operating and controlling modern electric energy systems. The controls developed by APERC provide for a more efficient, economical, reliable, and secure operation of these systems. Under this program, we developed distributed control algorithms suitable for large-scale geographically dispersed power systems and also economic tools to evaluate their effectiveness and impact on power markets. Progress was made in the development of distributed intelligent control agents for reliable and automated operation of integrated electric power systems. The methodologies employed combine information technology, control and communication, agent technology, and power systems engineering in the development of intelligent control agents for reliable and automated operation of integrated electric power systems. In the event of scheduled load changes or unforeseen disturbances, the power system is expected to minimize the effects and costs of disturbances and to maintain critical infrastructure operational.

  11. Efficient implementation of a multidimensional fast fourier transform on a distributed-memory parallel multi-node computer

    DOE Patents [OSTI]

    Bhanot, Gyan V. (Princeton, NJ); Chen, Dong (Croton-On-Hudson, NY); Gara, Alan G. (Mount Kisco, NY); Giampapa, Mark E. (Irvington, NY); Heidelberger, Philip (Cortlandt Manor, NY); Steinmacher-Burow, Burkhard D. (Mount Kisco, NY); Vranas, Pavlos M. (Bedford Hills, NY)

    2008-01-01

    The present in invention is directed to a method, system and program storage device for efficiently implementing a multidimensional Fast Fourier Transform (FFT) of a multidimensional array comprising a plurality of elements initially distributed in a multi-node computer system comprising a plurality of nodes in communication over a network, comprising: distributing the plurality of elements of the array in a first dimension across the plurality of nodes of the computer system over the network to facilitate a first one-dimensional FFT; performing the first one-dimensional FFT on the elements of the array distributed at each node in the first dimension; re-distributing the one-dimensional FFT-transformed elements at each node in a second dimension via "all-to-all" distribution in random order across other nodes of the computer system over the network; and performing a second one-dimensional FFT on elements of the array re-distributed at each node in the second dimension, wherein the random order facilitates efficient utilization of the network thereby efficiently implementing the multidimensional FFT. The "all-to-all" re-distribution of array elements is further efficiently implemented in applications other than the multidimensional FFT on the distributed-memory parallel supercomputer.

  12. Efficient implementation of multidimensional fast fourier transform on a distributed-memory parallel multi-node computer

    DOE Patents [OSTI]

    Bhanot, Gyan V. (Princeton, NJ); Chen, Dong (Croton-On-Hudson, NY); Gara, Alan G. (Mount Kisco, NY); Giampapa, Mark E. (Irvington, NY); Heidelberger, Philip (Cortlandt Manor, NY); Steinmacher-Burow, Burkhard D. (Mount Kisco, NY); Vranas, Pavlos M. (Bedford Hills, NY)

    2012-01-10

    The present in invention is directed to a method, system and program storage device for efficiently implementing a multidimensional Fast Fourier Transform (FFT) of a multidimensional array comprising a plurality of elements initially distributed in a multi-node computer system comprising a plurality of nodes in communication over a network, comprising: distributing the plurality of elements of the array in a first dimension across the plurality of nodes of the computer system over the network to facilitate a first one-dimensional FFT; performing the first one-dimensional FFT on the elements of the array distributed at each node in the first dimension; re-distributing the one-dimensional FFT-transformed elements at each node in a second dimension via "all-to-all" distribution in random order across other nodes of the computer system over the network; and performing a second one-dimensional FFT on elements of the array re-distributed at each node in the second dimension, wherein the random order facilitates efficient utilization of the network thereby efficiently implementing the multidimensional FFT. The "all-to-all" re-distribution of array elements is further efficiently implemented in applications other than the multidimensional FFT on the distributed-memory parallel supercomputer.

  13. Neutron to proton mass difference, parton distribution functions and baryon resonances from dynamics on the Lie group u(3)

    E-Print Network [OSTI]

    Ole L. Trinhammer

    2012-06-25

    We present a hamiltonian structure on the Lie group u(3) to describe the baryon spectrum. The ground state is identified with the proton. From this single fit we calculate approximately the relative neutron to proton mass shift to within half a percentage of the experimental value. From the same fit we calculate the nucleon and delta resonance spectrum with correct grouping and no missing resonances. For specific spin eigenfunctions we calculate the delta to nucleon mass ratio to within one percent. Finally we derive parton distribution functions that compare well with those for the proton valence quarks. The distributions are generated by projecting the proton state to space via the exterior derivative on u(3). We predict scarce neutral flavour singlets which should be visible in neutron diffraction dissociation experiments or in invariant mass spectra of protons and negative pions in B-decays and in photoproduction on neutrons. The presence of such singlet states distinguishes experimentally the present model from the standard model as does the prediction of the neutron to proton mass splitting. Conceptually the Hamiltonian may describe an effective phenomenology or more radically describe interior dynamics implying quarks and gluons as projections from u(3) which we then call allospace.

  14. European Conference on Parallel and Distributed Computing (Euro-Par) Workshop on Virtualization in High-Performance Cluster and Grid Computing (VHPC)

    E-Print Network [OSTI]

    Engelmann, Christian

    Research Group Computer Science and Mathematics Division Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA #12;2/24 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY European Conference Department of Energy - Over $1 billion budget, over 4000 employees · Oak Ridge National Laboratory has the 2

  15. A Consortium to Promote Distributed Computing Rahman Tashakkori, Barry L. Kurtz Barry Wilkinson Mark A. Holliday

    E-Print Network [OSTI]

    Holliday, Mark A.

    a consortium to promote high performance computing at comprehensive universities throughout the state [2 in high-performance computing, information systems, and computational and computer science." [1] Twelve. BACKGROUND In the realm of high performance computing there has been a shift from traditional parallel

  16. ORLIB: a computer code that produces one-energy group, time- and spatially-averaged neutron cross sections

    SciTech Connect (OSTI)

    Blink, J.A.; Dye, R.E.; Kimlinger, J.R.

    1981-12-01

    Calculation of neutron activation of proposed fusion reactors requires a library of neutron-activation cross sections. One such library is ACTL, which is being updated and expanded by Howerton. If the energy-dependent neutron flux is also known as a function of location and time, the buildup and decay of activation products can be calculated. In practice, hand calculation is impractical without energy-averaged cross sections because of the large number of energy groups. A widely used activation computer code, ORIGEN2, also requires energy-averaged cross sections. Accordingly, we wrote the ORLIB code to collapse the ACTL library, using the flux as a weighting function. The ORLIB code runs on the LLNL Cray computer network. We have also modified ORIGEN2 to accept the expanded activation libraries produced by ORLIB.

  17. Smart-Metering for Monitoring Building Power Distribution Network using Instantaneous Phasor Computations of Electrical Signals

    E-Print Network [OSTI]

    K.R., Krishnanand

    2013-01-01

    phase smart meter . in Electrical and Control Engineering (Phasor Computations of Electrical Signals Krishnanand K.R. ,Panda* Department of Electrical and Computer Engineering,

  18. Joint Reconstruction of Absorbed Optical Energy Density and Sound Speed Distribution in Photoacoustic Computed Tomography: A numerical Investigation

    E-Print Network [OSTI]

    Huang, Chao; Schoonover, Robert W; Wang, Lihong V; Anastasio, Mark A

    2015-01-01

    Photoacoustic computed tomography (PACT) is a rapidly emerging bioimaging modality that seeks to reconstruct an estimate of the absorbed optical energy density within an object. Conventional PACT image reconstruction methods assume a constant speed-of-sound (SOS), which can result in image artifacts when acoustic aberrations are significant. It has been demonstrated that incorporating knowledge of an object's SOS distribution into a PACT image reconstruction method can improve image quality. However, in many cases, the SOS distribution cannot be accurately and/or conveniently estimated prior to the PACT experiment. Because variations in the SOS distribution induce aberrations in the measured photoacoustic wavefields, certain information regarding an object's SOS distribution is encoded in the PACT measurement data. Based on this observation, a joint reconstruction (JR) problem has been proposed in which the SOS distribution is concurrently estimated along with the sought-after absorbed optical energy density ...

  19. Evidence for complex, collective dynamics and emergent, distributed computation in plants

    E-Print Network [OSTI]

    Peak, David

    similar to dynamical behavior observed in some CA that perform specific computational tasks. As we discuss

  20. In Proceedings of ICDCS'97: TheIEEE26 70000 Conference on Distributed Computing

    E-Print Network [OSTI]

    Abstract Traditionally, the goal of load management protocols for distributed systems has been to ensure

  1. --Curriculum Initiative on Parallel and Distributed Computing at the University of Western Ontario --

    E-Print Network [OSTI]

    Moreno Maza, Marc

    This poster describes the integration of high-performance computing courses in the undergraduate curriculum of our curriculum that the democratization of High Performance Computing (HPC) requires. Integration for the first time this academic year. CS 2101 ­ Foundations of Programming for High Performance Computing

  2. Damage Detection as Inverse Problems for Distributed Parameter Systems: Computational Approaches

    E-Print Network [OSTI]

    .T. Banks Center for Research in Scientific Computation North Carolina State University Raleigh, NC 27695 for Research in Scientific Computation North Carolina State University Raleigh, NC 27695­8205 Abstract In this review paper, we outline a theoretical and computational methodology that has been used with success

  3. Computer resources Computer resources

    E-Print Network [OSTI]

    Yang, Zong-Liang

    Computer resources 1 Computer resources available to the LEAD group Cédric David 30 September 2009 #12;Ouline · UT computer resources and services · JSG computer resources and services · LEAD computers· LEAD computers 2 #12;UT Austin services UT EID and Password 3 https://utdirect.utexas.edu #12;UT Austin

  4. OPEN COMPUTING FACILITY Group Account Application Form 1. Pick an account name. It must consist of between three and eight lowercase letters (no spaces, numbers, underscores,

    E-Print Network [OSTI]

    Walker, Matthew P.

    OPEN COMPUTING FACILITY Group Account Application Form 1. Pick an account name. It must consist of between three and eight lowercase letters (no spaces, numbers, underscores, or other symbols), and it must be based on the group's name or initials. Requested Account Name: 2. Pick a password. The password must

  5. Distributing medicine using PageRank Department of Mathematics and Computer Science

    E-Print Network [OSTI]

    Goddard, Wayne

    Background Approach Results Distributing medicine using PageRank Paul Horn Department October 7, 2010 Horn Distributing medicine using PageRank #12;Background Approach Results The Problem Disease breaks out! We need to stop it before it becomes an epidemic! We want to distribute medicine so

  6. The Future Computing Environments (FCE) Group at Georgia Tech is a collection of faculty and students that

    E-Print Network [OSTI]

    Abowd, Gregory D.

    as computation and sensing become ubiquitous. With expertise covering the breadth of Computer Science), and on one's person (Wearable Computing). Keywords organizational overview, ubiquitous computing, context in ubiquitous computing (ubicomp). Our reputation has resulted in growth in associated faculty and research

  7. Astropulse. A Search for Microsecond Transient Radio Signals Using Distributed Computing

    E-Print Network [OSTI]

    Von Korff, Joshua Solomon

    2010-01-01

    microscopic-scale images of aerogel. “Distributed thinking”dust collector, a tray of aerogel blocks, was then scanneds Johnson Space Center. Aerogel is a transparent, ultra

  8. computers

    National Nuclear Security Administration (NNSA)

    Each successive generation of computing system has provided greater computing power and energy efficiency.

    CTS-1 clusters will support NNSA's Life Extension Program and...

  9. Computational mechanics of molecular systems: Quantifying high-dimensional dynamics by distribution of Poincare recurrence times

    E-Print Network [OSTI]

    Nerukh, Dmitry

    Computational mechanics of molecular systems: Quantifying high- dimensional dynamics computational mechanics as a bridge between deterministic chaos in nonlinear dynamical systems with few degrees-Hakodate, School of Systems Information Science, Department of Complex System, 116-2 Kamedanakano-cho, Hakodate

  10. PROCEEDINGS OF THE FIFTH BERKELEY WORKSHOP ON DISTRIBUTED DATA MANAGEMENT AND COMPUTER NETWORKS

    E-Print Network [OSTI]

    Johnson, R.R.

    2011-01-01

    a Relational Data Base Management System," Proc. ACM-SIGMOD,level of large data base management systems. One reason forA distributed data base management system supports a data

  11. Globally Distributed Engineering Teams in Computational Fluid Dynamics and in Product Development 

    E-Print Network [OSTI]

    Schmidt, Susanne R.

    2010-10-12

    Globally distributed engineering teams are a reality in globally operating companies. However, research on teams is often done by psychologists, with a focus on general team building and working processes, and seldom on engineering teams...

  12. A Distributed, Architecture-Centric Approach to Computing Accurate Recommendations from Very Large and Sparse Datasets

    E-Print Network [OSTI]

    Morozov, Serhiy

    2011-08-31

    that provide one type of recommendation. Their inflexible architectures prevent detailed examination of recommendation accuracy and its causes. We introduce a novel architecture model that supports scalable, distributed suggestions from multiple independent...

  13. Reactive Scheduling of DAG Applications on Heterogeneous and Dynamic Distributed Computing Systems 

    E-Print Network [OSTI]

    Hernandez, Jesus Israel

    2008-12-04

    Emerging technologies enable a set of distributed resources across a network to be linked together and used in a coordinated fashion to solve a particular parallel application at the same time. Such applications are often ...

  14. Distributed Multicast Grouping for Publish/Subscribe over Mobile Ad Hoc Networks Eiko Yoneki and Jean Bacon

    E-Print Network [OSTI]

    Cambridge, University of

    and Jean Bacon University of Cambridge Computer Laboratory J J Thomson Avenue, Cambridge CB3 0FD, UK Email: {eiko.yoneki, jean.bacon}@cl.cam.ac.uk Abstract-- Event broker grids that deploy the pub- lish

  15. Decoupling Computation and Data Scheduling in Distributed Data-Intensive Applications

    E-Print Network [OSTI]

    Agrawal, Gagan

    ,foster}@cs.uchicago.edu Abstract In high energy physics, bioinformatics, and other disciplines, we encounter applications involving (e.g., resource utilization, response time, global and local allocation policies) while dealing with multiple, potentially independent sources of jobs and a large number of storage, compute, and network

  16. Kenneth J. Turner. Realising Architectural Feature Descriptions using LOTOS. Parallel Computers, Networks and Distributed Systems (Calculateurs

    E-Print Network [OSTI]

    Turner, Ken

    Computing Science and Mathematics, University of Stirling Stirling FK9 4LA, Scotland kjt@cs.stir.ac.uk ABSTRACT. ANISE (Architectural Notions In Service Engineering) can be used to describe a range ´E. ANISE (Architectural Notions In Service Engineering) est utilis´e pour la description d'une gamme

  17. MapReduce Programming Model for .NET-based Distributed Computing Chao Jin and Rajkumar Buyya

    E-Print Network [OSTI]

    Buyya, Rajkumar

    ,000 to several million commodity machines dispersed across about 25 data centers [10]. Microsoft also presents of Virtual Machines through the web service interface. Although the popularity of data centers is increasing the basis of `data center computer' [5]. #12;2 .NET is the standard platform of Windows applications

  18. Teaching the Grid: Learning Distributed Computing with the M-grid Framework

    E-Print Network [OSTI]

    Walters, Robert

    . This situation arises in a number of different scenarios, including Grid computing which is a secure, service how to use as real Grid software requires extensive setting up and complex security processes. M-grid it is executed. Established Grid systems have extensive security infrastructures associated with them

  19. A Distributed Computer Automation and Control System for IBM's GTD Process Plant at Austin Texas 

    E-Print Network [OSTI]

    Getter, L. C.

    1982-01-01

    chemical day tank in the manufacturing building is full, a messaee is sent over the data highway to the Tank Farm PLC instruc ting it to discontinue chemical feed and seal the pumping system. CDC/i:anl: :':'arm The Chemical Distribution Center manaees...

  20. Proceedings of the sixth Berkeley workshop on distributed data management and computer networks

    SciTech Connect (OSTI)

    Various Authors

    1982-01-01

    A distributed data base management system allows data to be stored at multiple locations and to be accessed as a single unified data base. In this workshop, seventeen papers were presented which have been prepared separately for the energy data base. These items deal with data transfer, protocols and management. (GHT)

  1. Integrating Network Awareness in ATLAS Distributed Computing Using the ANSE Project

    E-Print Network [OSTI]

    Klimentov, Alexei; The ATLAS collaboration; Petrosyan, Artem; Batista, Jorge Horacio; Mc Kee, Shawn Patrick

    2015-01-01

    A crucial contributor to the success of the massively scaled global computing system that delivers the analysis needs of the LHC experiments is the networking infrastructure upon which the system is built. The experiments have been able to exploit excellent high-bandwidth networking in adapting their computing models for the most efficient utilization of resources. New advanced networking technologies now becoming available such as software defined networking hold the potential of further leveraging the network to optimize workflows and dataflows, through proactive control of the network fabric on the part of high level applications such as experiment workload management and data management systems. End to end monitoring of networks using perfSONAR combined with data flow performance metrics further allows applications to adapt based on real time conditions. We will describe efforts underway in ATLAS on integrating network awareness at the application level, particularly in workload management, building upon ...

  2. Cooperative fault-tolerant distributed computing U.S. Department of Energy Grant DE-FG02-02ER25537 Final Report

    SciTech Connect (OSTI)

    Sunderam, Vaidy S.

    2007-01-09

    The Harness project has developed novel software frameworks for the execution of high-end simulations in a fault-tolerant manner on distributed resources. The H2O subsystem comprises the kernel of the Harness framework, and controls the key functions of resource management across multiple administrative domains, especially issues of access and allocation. It is based on a “pluggable” architecture that enables the aggregated use of distributed heterogeneous resources for high performance computing. The major contributions of the Harness II project result in significantly enhancing the overall computational productivity of high-end scientific applications by enabling robust, failure-resilient computations on cooperatively pooled resource collections.

  3. Computing

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit the following commentsMethodsCompositional6Energy Computers,Computing and

  4. Computing

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit the following commentsMethodsCompositional6Energy Computers,Computing

  5. Computing

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAuditsCluster Compatibilitydefault Changes TheComputeComputing

  6. A microcomputer-based communication and data acquisition unit for coordinated control and monitoring of distribution system computer-based protective relays 

    E-Print Network [OSTI]

    Halter, John Alan

    1981-01-01

    A MICROCOMPUTER-BASED COMMUNICATION AND DATA ACQUISITION UNIT FOR COORDINATED CONTROL AND MONITORING OP DISTRIBUTION SYSTEM COMPUTER-BASED PROTECTIVE RELAYS A Thesis by JOHN ALAN HALTER Submitted to the Graduate College of Texas A... OF DISTRIBUTION SYSTEM COMPUTER-BASED PROTECTIVE RELAYS A Thesis by JOHN ALAN HALTER Approved as to style and cont nt by: Dr. B. D. Russell (Chairman of Committee) Q~ g )aN~K Dr. W. S. Kuklinski (Member) p~w Dr. J, H. Painter Dr. N. R. Strader (Member...

  7. The geological distribution of mixed-layered kaolinite/expandables (K/E) and its importance within the kaolin group

    SciTech Connect (OSTI)

    Hughes, R.E.; Moore, D.M. (Illinois State Geological Survey, Champaign, IL (United States))

    1993-03-01

    Kaolin-group minerals form in soils by at least three alteration pathways: (1) halloysite forms under pH and ionic extremes, and continues to increase in crystallinity and crystallite sizes along its alteration pathway; (2) mixed-layered kaolinite/smectite or kaolinite/expandables (K/S or K/E) forms from 2:1 layer silicates and contains true expandable layers and inherited Fe[sup VI] and Al[sup IV] within its 7[angstrom] layers. Minor increases in crystallinity and crystallite size accompany further alteration along the K/E pathway; and (3) well-crystallized kaolinites, dickites, and nacrites precipitate from solution, mostly in reducing environments where Fe[sup 2+] is removed from solution by crystallization of sulfides or carbonates. Kaolinite formed along pathways 1 and 2 retains attributes of parent material, whereas kaolinite from pathway 3 retains little. K/E occurs in Recent loessal soils of the Midwest and in related glacigenic paleosols, Quaternary-Pliocene paleosols, Eocene ball clays and their source paleosols on the Porters Creek Clay, Jurassic paleosols in Ireland, and Pennsylvanian underclays. The characteristic properties of K/E imprint kaolinite formed along this pathway. The frequency with which this imprint is being found suggests that K/E is spatially and chronologically more widespread than previously reported and that wider recognition of this imprint will increase the understanding of many kaolin occurrences.

  8. THE SUBGROUPS OF M24, OR HOW TO COMPUTE THE TABLE OF MARKS OF A FINITE GROUP.

    E-Print Network [OSTI]

    Pfeiffer, Götz

    points. It provides a compact description of the subgroup lattice of G an* *d enables explicit provides a very compact description of the subgroup lattice of G. Traditionally, the computation into the complete table of marks of G we have to determine the fusion maps from the sets of conjugacy classes

  9. Computer

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit the following commentsMethodsCompositional6 Computational CSEEnergy

  10. Accepted for the 2nd Intl Conf on Parallel and Distributed Computing, Applications and Technologies Taipei, Taiwan, July 9-11, 2001

    E-Print Network [OSTI]

    Power, James

    3209, South Africa. Email: karsten@alpha.futurenet.co.za b Dept of Computer Science, NUI, Maynooth of an SPMD architecture (Single Program, Multiple Data). The need for this research arose out of showing that DCL met its design goals. keywords: Distributed Architecture 1: Introduction Research

  11. [22] C. Dwork, M. Herlihy, and O. Waarts. Bounded round numbers. In Proceedings of the 12th Annual ACM Symposium on Principles of Distributed Computing, pages 53--64, 1993.

    E-Print Network [OSTI]

    Attiya, Hagit

    ACM Symposium on Principles of Distributed Computing, pages 53--64, 1993. [23] A. Fouren. Exponential. 1999. [24] E. Gafni. Public communication. 17th Annual ACM Symp. on Principles of Distributed Computing. [26] M. Herlihy. Wait­free synchronization. ACM Trans. Prog. Lang. Syst., 13(1):124--149, Jan. 1991

  12. Graph 500 Performance on a Distributed-Memory Cluster REU Site: Interdisciplinary Program in High Performance Computing

    E-Print Network [OSTI]

    Gobbert, Matthias K.

    traditional performance benchmarks for high- performance computers measure the speed of arithmetic operations benchmark is intended to rank high-performance computers based on speed of memory retrieval-memory cluster tara in the UMBC High Performance Computing Facility (www.umbc.edu/hpcf). The cluster tara has 82

  13. Computer Science Computer Science?

    E-Print Network [OSTI]

    Cafarella, Michael J.

    -M Programming, U-M Solar Car, Hybrid Racing, and the Mars Rover Team. Other groups that advance societal good. Michigan Hackers: Experimenting with technology gEECS: Girls in electrical engineering and computer science

  14. Morgan Kaufmann is pleased to present material from a preliminary draft of High Performance Distributed Computing: Building a Computational Grid ; the

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    in units of scenarios per day, wind patterns per week, instructions sets per month, or crystal of phenomena including among others diesel engines, neural networks, high energy physics events, computer

  15. To appear in Large Scale Network-Centric Computing Systems, Editors: H. Sarbazi-Azad and A. Zomaya, Wiley Series on Parallel and Distributed Computing, Jul. 2013

    E-Print Network [OSTI]

    Pedram, Massoud

    infrastructure, Electrical Grid, personnel and billions of dollars in capital expenditure and operational cost University of Southern California Department of Electrical Engineering Los Angeles CA, USA Abstract a broad range of application areas from energy production and distribution, complex weather modeling

  16. Presented by Scientific Computing Group

    E-Print Network [OSTI]

    · Viewing at a 30 ft 8 ft PowerWall · Cluster with GPUs for remote visualization Visualization and data

  17. Adolfo, Poma Computational Physics Group

    E-Print Network [OSTI]

    Roma "La Sapienza", Università di

    , Poster Session, Regensburg, Germany. Sep. 2009 Physics of biopolymers: Theory and simulation, Istanbul,Turkey, Max Planck Institute for Polymer Research, Germany. - Major in Physics, Cum laude -- Phd Thesis title.A.U.S.T. Scholarship, Italy. 2009-2011 DAAD Scholarship, Germany. 2008­2009 International Max Planck Research School

  18. DRAFT: To appear in Theory of Computing Systems November 2003 Distributed Object Location in a Dynamic Network

    E-Print Network [OSTI]

    Kubiatowicz, John D.

    locality and rapid adaptation to arriving and departing nodes. We show how these two properties can widely for availability, durability, and locality.1 This has lead to a renewed interest in techniques storage and balanced computational load. 4. Dynamic Membership: The system must adapt to arriving

  19. 712 IEEE TRANSACTIONS ON EVOLUTIONARY COMPUTATION, VOL. 13, NO. 4, AUGUST 2009 Mean and Variance of the Sampling Distribution of

    E-Print Network [OSTI]

    Poli, Riccardo

    of the particle swarm optimizer (PSO). In this paper we introduce a novel method that allows us to exactly determine all the characteristics of a PSO sampling distribution and explain how it changes over any number to the PSO with inertia weight, but the analysis is also valid for the PSO with constriction and other forms

  20. A Study of Grouping Effect On Mobile Actuator Sensor Networks for Distributed Feedback Control of Diffusion Process Using Central Voronoi Tessellations

    E-Print Network [OSTI]

    Ren, Wei

    grouping, mobile actuator networks, coordinated control, diffusion process, pollution neutralization, Centroidal Voronoi Tessellation. I. INTRODUCTION The deployment of large groups of unmanned vehicles for pollution detection which mo- tivates "Mobile Actuator and Sensor Network (MAS-net) project" in CSOIS, Utah

  1. Start | View At a Glance | Author Index 100-22 Molecular Scale Assessment of C Functional Group Distribution of Soil Humic Substances Under Varying Land Use and

    E-Print Network [OSTI]

    Sparks, Donald L.

    . We collected soil samples at two soil depths: 0-5 cm and 20-25 cm and the humic and fulvic acids were extracted from the soils. The C functional group composition of humic acids and fulvic acids were

  2. 34 Vakali, Pallis & Angelis Copyright 2007, Idea Group Inc. Copying or distributing in print or electronic forms without written permission of

    E-Print Network [OSTI]

    Pallis, George

    or electronic forms without written permission of Idea Group Inc. is prohibited. Chapter II Clustering Web The explosive growth of the Web has drastically increased information circulation and dissemination rates. As the numbers of both Web users and Web sources grow significantly every day, crucial data management issues

  3. Nick Wright Named Advanced Technologies Group Lead

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

    National Laboratory's Future Technologies Group (FTG) to assess emerging technologies in architecture, algorithms, parallel programming paradigms and languages. "Computing...

  4. Important role of the non-uniform Fe distribution for the ferromagnetism in group-IV-based ferromagnetic semiconductor GeFe

    SciTech Connect (OSTI)

    Wakabayashi, Yuki K.; Ohya, Shinobu; Ban, Yoshisuke; Tanaka, Masaaki [Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)

    2014-11-07

    We investigate the growth-temperature dependence of the properties of the group-IV-based ferromagnetic semiconductor Ge{sub 1?x}Fe{sub x} films (x?=?6.5% and 10.5%), and reveal the correlation of the magnetic properties with the lattice constant, Curie temperature (T{sub C}), non-uniformity of Fe atoms, stacking-fault defects, and Fe-atom locations. While T{sub C} strongly depends on the growth temperature, we find a universal relationship between T{sub C} and the lattice constant, which does not depend on the Fe content x. By using the spatially resolved transmission-electron diffractions combined with the energy-dispersive X-ray spectroscopy, we find that the density of the stacking-fault defects and the non-uniformity of the Fe concentration are correlated with T{sub C}. Meanwhile, by using the channeling Rutherford backscattering and particle-induced X-ray emission measurements, we clarify that about 15% of the Fe atoms exist on the tetrahedral interstitial sites in the Ge{sub 0.935}Fe{sub 0.065} lattice and that the substitutional Fe concentration is not correlated with T{sub C}. Considering these results, we conclude that the non-uniformity of the Fe concentration plays an important role in determining the ferromagnetic properties of GeFe.

  5. Group X

    SciTech Connect (OSTI)

    Fields, Susannah

    2007-08-16

    This project is currently under contract for research through the Department of Homeland Security until 2011. The group I was responsible for studying has to remain confidential so as not to affect the current project. All dates, reference links and authors, and other distinguishing characteristics of the original group have been removed from this report. All references to the name of this group or the individual splinter groups has been changed to 'Group X'. I have been collecting texts from a variety of sources intended for the use of recruiting and radicalizing members for Group X splinter groups for the purpose of researching the motivation and intent of leaders of those groups and their influence over the likelihood of group radicalization. This work included visiting many Group X websites to find information on splinter group leaders and finding their statements to new and old members. This proved difficult because the splinter groups of Group X are united in beliefs, but differ in public opinion. They are eager to tear each other down, prove their superiority, and yet remain anonymous. After a few weeks of intense searching, a list of eight recruiting texts and eight radicalizing texts from a variety of Group X leaders were compiled.

  6. Data Management Group Annual Report

    E-Print Network [OSTI]

    Toronto, University of

    Data Management Group Annual Report 2000 prepared by: Data Management Group Joint Program ...........................................18 #12;i SUMMARY The Data Management Group (DMG), in cooperation with the funding agencies, has. In addition, there were 26 complex requests for data that required a customized computer program. Eight

  7. Distributed Internet Security and Measurement

    E-Print Network [OSTI]

    New Mexico, University of

    , New Mexico May, 2009 #12;Distributed Internet Security and Measurement by Josh Karlin B.A., Computer#12;Distributed Internet Security and Measurement by Josh Karlin B.A., Computer Science for the Degree of Doctor of Philosophy Computer Science The University of New Mexico Albuquerque, New Mexico May

  8. The economics of US greenhouse gas emissions reduction policy : assessing distributional effects across households and the 50 United States using a recursive dynamic computable general equilibrium (CGE) model

    E-Print Network [OSTI]

    Look, Wesley Allen

    2013-01-01

    The political economy of US climate policy has revolved around state- and district- level distributional economics, and to a lesser extent household-level distribution questions. Many politicians and analysts have suggested ...

  9. Distributed Energy Financial Group | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (UtilityInstrumentsArea (DOE GTP)Displacement Transfer Zone Jump to:Financial

  10. Cognitive Engineering Group Contact group leader: Cristobal.Curio@tuebingen.mpg.de

    E-Print Network [OSTI]

    Cognitive Engineering Group Contact group leader: Cristobal.Curio@tuebingen.mpg.de Research Max Planck Institute for Biological Cybernetics Goal: To develop reliable, non-intrusive, Human paper awards In the Cognitive Engineering group computer scientists, psychologists, mathematicians

  11. Bio-Derived Liquids to Hydrogen Distributed Reforming Working...

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

    to Hydrogen Distributed Reforming Working Group (BILIWG) on October 24, 2006, in Baltimore, Maryland. The Working Group is addressing technical challenges to distributed...

  12. Sensor Networks: Distributed Algorithms Reloaded or Revolutions?

    E-Print Network [OSTI]

    Sensor Networks: Distributed Algorithms Reloaded ­ or Revolutions? Roger Wattenhofer Computer. This paper wants to motivate the distributed algorithms community to study sensor networks. We discuss why community, a sensor network essentially is ­ a database. The distributed algorithms community should join

  13. Distributed Averaging Via Lifted Markov Chains

    E-Print Network [OSTI]

    Jung, Kyomin

    Motivated by applications of distributed linear estimation, distributed control, and distributed optimization, we consider the question of designing linear iterative algorithms for computing the average of numbers in a ...

  14. Distributed Bio-Oil Reforming

    Broader source: Energy.gov [DOE]

    Presentation by NREL's Robert Evans at the October 24, 2006 Bio-Derived Liquids to Hydrogen Distributed Reforming Working Group Kick-Off Meeting.

  15. Link failure detection in a parallel computer

    DOE Patents [OSTI]

    Archer, Charles J. (Rochester, MN); Blocksome, Michael A. (Rochester, MN); Megerian, Mark G. (Rochester, MN); Smith, Brian E. (Rochester, MN)

    2010-11-09

    Methods, apparatus, and products are disclosed for link failure detection in a parallel computer including compute nodes connected in a rectangular mesh network, each pair of adjacent compute nodes in the rectangular mesh network connected together using a pair of links, that includes: assigning each compute node to either a first group or a second group such that adjacent compute nodes in the rectangular mesh network are assigned to different groups; sending, by each of the compute nodes assigned to the first group, a first test message to each adjacent compute node assigned to the second group; determining, by each of the compute nodes assigned to the second group, whether the first test message was received from each adjacent compute node assigned to the first group; and notifying a user, by each of the compute nodes assigned to the second group, whether the first test message was received.

  16. Design and implementation of evolutionary computation algorithms for volunteer compute networks

    E-Print Network [OSTI]

    Mbagwu, Otitochi (Otitochi E.)

    2014-01-01

    We implemented a distributed evolutionary computation system titled EvoGPJ Star (EGS) and deployed the system onto Boinc, a volunteer computing network (VCN). Evolutionary computation is computationally expensive and VCN ...

  17. Computational University of Leeds

    E-Print Network [OSTI]

    Berzins, M.

    Computational University of Leeds PDEs Unit #12;About the Unit The Computational PDEs Unit is a research and consultancy unit within the School of Computing, University of Leeds. Formally established are interdisciplinary, involving close collaboration with other research groups both at Leeds and elsewhere. One

  18. Automata groups 

    E-Print Network [OSTI]

    Muntyan, Yevgen

    2010-01-16

    automata over the alphabet of 2 letters and 2-state automata over the 3-letter alphabet. We continue the classification work started by the research group at Texas A&M University ([BGK+07a, BGK+07b]) and further reduce the number of pairwise nonisomorphic...

  19. BILIWG Meeting: DOE Hydrogen Quality Working Group Update and...

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

    Working Group Update and Recent Progress (Presentation) Presented at the 2007 Bio-Derived Liquids to Hydrogen Distributed Reforming Working Group held November 6, 2007 in...

  20. In Journal of Parallel and Distributed Computing, vol. 26, pp. 125131, 1995. Analysis of the Convergence and Generalization of AA1

    E-Print Network [OSTI]

    Martinez, Tony R.

    Science, Brigham Young University Abstract AA1 is an incremental learning algorithm for Adaptive Self a renewed interest in connectionist computing. Some of the reasons for this interest can be traced' functions. Adaptive Self­Organizing Concurrent Systems (ASOCS) are dynamic networks that learn by adapting

  1. This paper will appear at the 30th International Conference on Distributed Computing Systems (ICDCS 2010), Genoa, Italy, June 2125, 2010

    E-Print Network [OSTI]

    Crandall, Jedidiah R.

    Univ. of New Mexico, Dept. of Computer Science Mail stop: MSC01 1130, 1 University of New Mexico by backbone-level routers. This system, intended mainly for Internet censorship, is a national-scale filter of the Chinese Internet. In total, our data consists of 123GB of raw tcpdumps and 613GB in an annotated SQL

  2. NERSC seeks Computational Systems Group Lead

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

    overload. Establish and implement measurements, reports and procedures to ensure that systems are operating at maximum efficiency and reliability consistent with the need to...

  3. Exhibits sorted bydepartment Computational Plasma Physics Group -

    E-Print Network [OSTI]

    Hochberg, Michael

    aircraft every year to compete in an international competition. Friday only. Drones and Unmanned Aerial Systems - examine & interact with Unmanned Aerial Systems (AKA drones) including simulation, hardware

  4. NERSC seeks Computational Systems Group Lead

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shines light on77 PAGEMissionStressMoveMuncriefB O N1 NERSC atis moving!!

  5. Jay Srinivasan! Group Lead, Computational Systems!

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACT EVALUATIONIntroducing theActivationDept of

  6. Joint Electrical and Computer Engineering Department & Computer Science Department Seminar

    E-Print Network [OSTI]

    of Distributed and Data Intensive Computing Center for Information Sciences and High Performance Computing is necessary to allow high performance computing and data centers to manage their energy costs while performing Services and High Performance Computing at Technische Universität Dresden, Dresden, Germany. More

  7. IY5512: Part 1 Information Security Group

    E-Print Network [OSTI]

    Mitchell, Chris

    IY5512: Part 1 1 Information Security Group IY5512 Computer Security Part 1: Introduction to computer security Chris Mitchell me@chrismitchell.net http://www.chrismitchell.net 1 Information Security) ... 2 Information Security Group Agenda · Overview · Security goals · Security approaches ­ prevention

  8. Programming an Amorphous Computational Medium

    E-Print Network [OSTI]

    Beal, Jacob

    Amorphous computing considers the problem of controllingmillions of spatially distributed unreliable devices which communicateonly with nearby neighbors. To program such a system, we need a highleveldescription language ...

  9. Distributed Estimation Distributed Estimation

    E-Print Network [OSTI]

    Gupta, Vijay

    with a Star Topology 2 2.1 Static Sensor Fusion . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1.1 Combining Estimators . . . . . . . . . . . . . . . . . . . . 3 2.1.2 Static Sensor Fusion for Star Topology;Distributed Estimation 3 Non-Ideal Networks with Star Topology 10 3.1 Sensor Fusion in Presence of Message

  10. Neural Computing Research Group Dept of Computer Science & Applied Mathematics

    E-Print Network [OSTI]

    Williams, Chris

    ://www.ncrg.aston.ac.uk/ Adding Constrained Discontinuities to Gaussian Process Models of Wind Fields Dan Cornford Ian T. Nabney along bounding surfaces, for example fronts in near­ surface wind fields. We describe a modelling method for such a constrained discontinuity and demonstrate how to infer the model parameters in wind fields with MCMC sampling

  11. Neural Computing Research Group Dept of Computer Science & Applied Mathematics

    E-Print Network [OSTI]

    Edinburgh, University of

    ://www.ncrg.aston.ac.uk/ Bayesian Inference for Wind Field Retrieval Dan Cornford and Ian T. Nabney and Christopher K. I. Williams d­parameters estimated from Numerical Weather Prediction Models yields meteorologically convincing wind fields. We use neural networks to make local estimates of wind vector probabilities. The resulting inference problem

  12. Parallel Computation of Non-Bonded Interactions in Drug Discovery: Nvidia GPUs vs.

    E-Print Network [OSTI]

    ´ez-S´anchez Parallel and Distributed Systems Group Delft University of Technology, Delft, the Netherlands j-bonded interactions, such as electrostatic or van der Waals, plays an important role, representing up to 80% of the to computational resources: the lack of such resources eventually prevents the use of detailed, high

  13. The Clouds Distributed Operating System * Partha Dasgupta

    E-Print Network [OSTI]

    Yeom, Heon Young

    The Clouds Distributed Operating System * Partha Dasgupta Dept. of Computer Science and Engg Ramachandran. College of Computing Georgia Tech, Atlanta, GA 30332 Keywords: Distributed Operating Systems operating system that runs on general purpose computers connected via a local­area network. The system

  14. Special Issue on Human Computing

    E-Print Network [OSTI]

    Nijholt, Anton

    The seven articles in this special issue focus on human computing. Most focus on two challenging issues in human computing, namely, machine analysis of human behavior in group interactions and context-sensitive modeling.

  15. Vision, Robotics and Images Research Group, UFPR 1 GPU-accelerated PSF Estimation with a

    E-Print Network [OSTI]

    , Computer Vision, Artificial Intelligence Databases, Computer-Human Interface Computer Networks, EmbeddedVision, Robotics and Images Research Group, UFPR 1 GPU-accelerated PSF Estimation) Kiepenheuer Institute for Solar Physics, Freiburg, Germany #12;Vision, Robotics and Images Research Group

  16. Cloud Computing and Grid Computing 360-Degree Compared

    E-Print Network [OSTI]

    Foster, Ian; Raicu, Ioan; Lu, Shiyong

    2009-01-01

    Cloud Computing has become another buzzword after Web 2.0. However, there are dozens of different definitions for Cloud Computing and there seems to be no consensus on what a Cloud is. On the other hand, Cloud Computing is not a completely new concept; it has intricate connection to the relatively new but thirteen-year established Grid Computing paradigm, and other relevant technologies such as utility computing, cluster computing, and distributed systems in general. This paper strives to compare and contrast Cloud Computing with Grid Computing from various angles and give insights into the essential characteristics of both.

  17. identification Distributed

    E-Print Network [OSTI]

    Schenato, Luca

    Networked Control Systems Clock Sync Channel identification in WSN Distributed control of Smart. Sandro Zampieri #12;Networked Control Systems Clock Sync Channel identification in WSN Distributed Systems Clock Sync Channel identification in WSN Distributed control of Smart Grids Conclusions Issues

  18. Computer Engineering Computer Systems and

    E-Print Network [OSTI]

    Computer Engineering Computer Systems and Electrical Engineering Concentrations MS Graduate Handbook 2014 - 2015 #12;MANUAL OF THE MS DEGREE IN COMPUTER ENGINEERING ARIZONA STATE UNIVERSITY 2014 ­ 2015 Computer Engineering (Computer Systems) graduate degrees please contact: School of Computing

  19. Certifying Solutions to Permutation Group Problems

    E-Print Network [OSTI]

    Sorge, Volker

    the integration of permutation group algorithms with proof planning. We consider eight basic questions arising planning. We consider eight basic questions arising in computational permutation group theory, for whichCertifying Solutions to Permutation Group Problems Arjeh Cohen 1 , Scott H. Murray 1#3; , Martin

  20. Certifying Solutions to Permutation Group Problems

    E-Print Network [OSTI]

    Murray, Scott H.

    of permutation group algorithms with proof planning. We consider eight basic questions arising in com- putational the integration of permutation group algorithms from computer algebra with proof planning. We consider eight basicCertifying Solutions to Permutation Group Problems Arjeh Cohen1 , Scott H. Murray1, , Martin Pollet

  1. Proof Planning some Permutation Group Problems | Abstract |

    E-Print Network [OSTI]

    Sorge, Volker

    of permutation group algorithms from computer algebra with proof planning. We consider eight basic questions handle eight basic queries, ranging from \\Is this permutation in that permutation group?" to \\What suÃ?cient information. In detail we concentrate on the following eight problems: Let G be a group

  2. Data Management Group Joint Program in Transportation

    E-Print Network [OSTI]

    Toronto, University of

    Data Management Group Joint Program in Transportation University of Toronto System Access Request/DD/YY): __________________________ In signing this agreement, I agree to use my account on the computer system at the Data Management Group only of another user. Although the Data Management Group will attempt to maintain service at all times and provide

  3. Data Management Group Joint Program in Transportation

    E-Print Network [OSTI]

    Toronto, University of

    Data Management Group Joint Program in Transportation University of Toronto System Access Request: __________________________________________________________________________ In signing this agreement, I agree to use my account on the computer system at the Data Management Group only of another user. Although the Data Management Group will attempt to maintain service at all times and provide

  4. Data Management Group Joint Program in Transportation

    E-Print Network [OSTI]

    Toronto, University of

    Data Management Group Joint Program in Transportation University of Toronto System Access Request/DD/YY): ________________________ In signing this agreement, I agree to use my account on the computer system at the Data Management Group only of another user. Although the Data Management Group will attempt to maintain service at all times and provide

  5. Local Groups Online: Political Learning and Participation

    E-Print Network [OSTI]

    Carroll, John M.

    Classification Keywords: H.5.3 Group and Organization interfaces, Collaborative computing 1. Introduction Human (Blau, 1977; Rogers, 1995). These commonalities may be as primary as family, kin and friends influencing policy through advocacy. At the group level of analysis, many groups combine instrumental

  6. Computational Biology | Supercomputing & Computation | ORNL

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

    Computational Biophysics Chemistry Computational Engineering Computer Science Data Earth Sciences Energy Science Future Technology Knowledge Discovery Materials Mathematics...

  7. Uniform Distribution

    E-Print Network [OSTI]

    randomly and equally likely a point in that interval), the uniform distribution ... Roughly speaking, this means that from any distribution we can create the uniform.

  8. Optimal investment and scheduling of distributed energy resources with uncertainty in electric vehicles driving schedules

    E-Print Network [OSTI]

    Cardoso, Goncalo

    2014-01-01

    and Operation of Distributed Energy Systems,” Computer AidedE. Pouresmaeil, “Distributed energy resources and benefitsoptimisation of distributed energy systems,” Applied Thermal

  9. 6.852J / 18.437J Distributed Algorithms, Fall 2001

    E-Print Network [OSTI]

    Lynch, Nancy A. (Nancy Ann), 1948-

    Design and analysis of concurrent algorithms, emphasizing those suitable for use in distributed networks. Process synchronization, allocation of computational resources, distributed consensus, distributed graph algorithms, ...

  10. A Lightweight Java Taskspaces Framework for Scientific Computing on Computational Grids

    E-Print Network [OSTI]

    De Sterck, Hans

    A Lightweight Java Taskspaces Framework for Scientific Computing on Computational Grids Appeared orientation and platform independence realized by implementation in Java. Grid administration tasks, Intertask Communication, Scalability, Java 1. INTRODUCTION Distributed computing on heterogeneous

  11. Community Cloud Computing

    E-Print Network [OSTI]

    Marinos, Alexandros

    2009-01-01

    Cloud Computing is rising fast, with its data centres growing at an unprecedented rate. However, this has come with concerns over privacy, efficiency at the expense of resilience, and environmental sustainability, because of the dependence on Cloud vendors such as Google, Amazon and Microsoft. Our response is an alternative model for the Cloud conceptualisation, providing a paradigm for Clouds in the community, utilising networked personal computers for liberation from the centralised vendor model. Community Cloud Computing (C3) offers an alternative architecture, created by combing the Cloud with paradigms from Grid Computing, principles from Digital Ecosystems, and sustainability from Green Computing, while remaining true to the original vision of the Internet. It is more technically challenging than Cloud Computing, having to deal with distributed computing issues, including heterogeneous nodes, varying quality of service, and additional security constraints. However, these are not insurmountable challenge...

  12. Draft NISTIR 80061 NIST Cloud Computing2

    E-Print Network [OSTI]

    Draft NISTIR 80061 NIST Cloud Computing2 Forensic Science Challenges NIST Cloud Computing Forensic Computing11 Forensic Science Challenges 12 NIST Cloud Computing Forensic Science Working Group13 Information challenges77 faced by experts when responding to incidents that have occurred in a cloud-computing ecosystem

  13. NERSC Users Group Meeting April 26 - 28, 1999 Presentations

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

    as remote computing, distributed supercomputing, teleimmersion, smart instruments, and data mining. However, the development and use of such applications are, in practice very...

  14. Bio-Derived Liquids to Hydrogen Distributed Reforming Working...

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

    and Purification Working Group (PURIWG) & Hydrogen Production Technical Team Bio-Derived Liquids to Hydrogen Distributed Reforming Working Group (BILIWG), Hydrogen Separation...

  15. GROUP STUDY ROOMS GROUP STUDY ROOMS

    E-Print Network [OSTI]

    Young, R. Michael

    STAFF AREA LEVEL 2 LOBBY bookBot GROUP STUDY ROOMS GROUP STUDY ROOMS GROUPSTUDYROOMS RAIN GARDEN LIBRARY TECHNOLOGY AND MEDIA SPACES GROUP STUDY EVENT AND MEETING SPACES STAFF ONLY STAIRS INSTITUTES AND UNIVERSITY CENTERS #12;GROUP STUDY ROOMS MAKER SPACE LEARNING COMMONS LOCKERS LOCKERS LOCKERS TEACHING

  16. Distributed Bio-Oil Reforming

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

    Mines Bio-Derived Liquids Distributed Reforming Working Group Meeting HFC&IT Program Baltimore, MD October 24, 2006 1 Gasification Partial oxidation CH 1.46 O .67 + 0.16 O 2 ...

  17. Manchester Centre for Computational Mathematics

    E-Print Network [OSTI]

    Higham, Nicholas J.

    UMIST Manchester Centre for Computational Mathematics: Annual Report 1993 Numerical Analysis Report. Creation of MCCM The strengthening of already active groups in computational mathematics and numerical for Computational Mathematics a natural step. The numerical analysts at UMIST have for some time played a recognised

  18. Software & GRID Computing for LHC

    E-Print Network [OSTI]

    Evans, Hal

    Software & GRID Computing for LHC (Computing Work in a Big Group) Frederick Luehring luehring computing ­ Writing software in large collaboration ­ Processing a large datastream February 10, 2011 P410/P Software in a Collaboration February 10, 2011 P410/P609 Presentation F. Luehring Pg. 10 #12;Collaborative

  19. Journal of Parallel and Distributed Computing 00 (2015) 116 Distributed

    E-Print Network [OSTI]

    Zhang, Minjie

    2015-01-01

    ]. Typically, bulk generation is the only energy resource to a distri- bution network and the direction of power flow is strictly from the central generation to downstream electric components [3]. Recently overload the networks. Second, it is very difficult to balance electricity demand with generation from

  20. Transaction Distribution Algorithms with User Classes for Distributed Application

    E-Print Network [OSTI]

    Murphy, John

    group transparently runs J2EE applications as if the group was a single entity. Clustering achieves load well. The most widely used IRD options are domain name server (DNS) round robin and hardware load balancers. The main disadvantage of DNS round robin is that it cannot guarantee equal client distribution

  1. Properties of Group Five and Group Seven transactinium elements

    E-Print Network [OSTI]

    Wilk, Philip A.

    2001-01-01

    of Group Five and Group Seven Transactinium Elementsof Group Five and Group Seven Transactinium Elements byof Group Five and Group Seven Transactinium Elements by

  2. IY5512: Part 2 Information Security Group

    E-Print Network [OSTI]

    Mitchell, Chris

    ; ­ introduction to security evaluation criteria. Information Security Group Agenda · Design principles · DesignIY5512: Part 2 1 Information Security Group IY5512 Computer Security Part 2: Design & evaluation · This part of the course covers: ­ fundamental security design principles; ­ a security design methodology

  3. Automatic identification of abstract online groups

    DOE Patents [OSTI]

    Engel, David W; Gregory, Michelle L; Bell, Eric B; Cowell, Andrew J; Piatt, Andrew W

    2014-04-15

    Online abstract groups, in which members aren't explicitly connected, can be automatically identified by computer-implemented methods. The methods involve harvesting records from social media and extracting content-based and structure-based features from each record. Each record includes a social-media posting and is associated with one or more entities. Each feature is stored on a data storage device and includes a computer-readable representation of an attribute of one or more records. The methods further involve grouping records into record groups according to the features of each record. Further still the methods involve calculating an n-dimensional surface representing each record group and defining an outlier as a record having feature-based distances measured from every n-dimensional surface that exceed a threshold value. Each of the n-dimensional surfaces is described by a footprint that characterizes the respective record group as an online abstract group.

  4. Computer Engineering Computer Systems and

    E-Print Network [OSTI]

    Computer Engineering Computer Systems and Electrical Engineering Concentrations Ph.D. Graduate Handbook 2014 - 2015 #12;MANUAL OF THE PH.D. DEGREE IN COMPUTER ENGINEERING ARIZONA STATE UNIVERSITY 2014 ­ 2015 Computer Engineering (Computer Systems) graduate degrees please contact: School of Computing

  5. On Distributing Symmetric Streaming Computations Jon Feldman

    E-Print Network [OSTI]

    Cortes, Corinna

    such as Bloomberg, retail businesses such as Amazon and WalMart, and other companies use this type of data

  6. Interoperable PKI Data Distribution in Computational Grids

    E-Print Network [OSTI]

    Pala, Massimiliano

    2010-01-01

    2008), “Overview of the Grid Security Infrastructure. ” [Protocol (PRQP) into the Grid Security Infrastructure (GSI).its integration into the Grid Security Infrastructure (GSI).

  7. Snowmass Computing Frontier I2: Distributed

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effect Photovoltaics -7541 *Impact NeutronSmallGridSmartphone data|SnapshotsSnowmass

  8. TEC Working Group Topic Groups Tribal

    Broader source: Energy.gov [DOE]

    The Tribal Topic Group was established in January 1998 to address government-to-government consultation between DOE and Indian Tribes affected by its transportation activities. The group focuses on...

  9. Distributed Generation

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

    Electricity, US Data. 6. Distributed Generation: Standby Generation and Cogeneration Ozz Energy Solutions, Inc. February 28 th , 2005. For more information about...

  10. Distributed generation

    SciTech Connect (OSTI)

    Ness, E.

    1999-09-02

    Distributed generation, locating electricity generators close to the point of consumption, provides some unique benefits to power companies and customers that are not available from centralized electricity generation. Photovoltaic (PV) technology is well suited to distributed applications and can, especially in concert with other distributed resources, provide a very close match to the customer demand for electricity, at a significantly lower cost than the alternatives. In addition to augmenting power from central-station generating plants, incorporating PV systems enables electric utilities to optimize the utilization of existing transmission and distribution.

  11. Silent Study Group Study

    E-Print Network [OSTI]

    Thompson, Michael

    36/72 36/7236/72 36/72 36/72 Silent Study Room 108C Group Study Room 108J Office Room 108A Office Room 108B Staff Room Room 108K Group Study Room 108I Group Study Room 108H Group Study Room 108G Group Study Room 108F Group Study Room 108E Group Study Room 108D Service Area Research Help / Circulation

  12. Proceedings of the SIGDIAL 2011: the 12th Annual Meeting of the Special Interest Group on Discourse and Dialogue, pages 817, Portland, Oregon, June 17-18, 2011. c 2011 Association for Computational Linguistics

    E-Print Network [OSTI]

    ´alez-Brenes and Jack Mostow Project LISTEN Language Technologies Institute School of Computer Science Carnegie Mellon differences matter by describing dialogues as feature vectors constructed from the logs of dialogs gener- ated construct and select subsets of features in order to build a good predictor. We focus our attention

  13. 18 CINEMAEDITOR QTR 1 / 2014 / VOL 64 Image Processing for Cinema is a part of the Chapman & Hall/CRC Mathematical and Computational Imaging Sciences Series. 2013 Taylor & Francis Group, LLC. All Rights Reserved.

    E-Print Network [OSTI]

    Verschure, Paul

    18 CINEMAEDITOR QTR 1 / 2014 / VOL 64 Image Processing for Cinema is a part of the Chapman & Hall. Given this sea change, it is a great relief to find Image Processing for Cinema by Marcelo Bertalmío. He and computer science, as a comprehensive guide to digital cinema for industry professionals. If you open

  14. Broadcasting a message in a parallel computer

    DOE Patents [OSTI]

    Berg, Jeremy E. (Rochester, MN); Faraj, Ahmad A. (Rochester, MN)

    2011-08-02

    Methods, systems, and products are disclosed for broadcasting a message in a parallel computer. The parallel computer includes a plurality of compute nodes connected together using a data communications network. The data communications network optimized for point to point data communications and is characterized by at least two dimensions. The compute nodes are organized into at least one operational group of compute nodes for collective parallel operations of the parallel computer. One compute node of the operational group assigned to be a logical root. Broadcasting a message in a parallel computer includes: establishing a Hamiltonian path along all of the compute nodes in at least one plane of the data communications network and in the operational group; and broadcasting, by the logical root to the remaining compute nodes, the logical root's message along the established Hamiltonian path.

  15. Distributed Data Mining: An Overview Yongjian Fu

    E-Print Network [OSTI]

    Fu, Yongjian

    Distributed Data Mining: An Overview Yongjian Fu Department of Computer Science University mining. We explain what distri­ bution data mining is and why distributed data mining is interesting. Problems and progress in distributed data mining are also discussed. 1 Introduction Facing a rapidly

  16. Distributed Quantum Programming

    E-Print Network [OSTI]

    Ellie D'Hondt; Yves Vandriessche

    2010-01-11

    In this paper we explore the structure and applicability of the Distributed Measurement Calculus (DMC), an assembly language for distributed measurement-based quantum computations. We describe the formal language's syntax and semantics, both operational and denotational, and state several properties that are crucial to the practical usability of our language, such as equivalence of our semantics, as well as compositionality and context-freeness of DMC programs. We show how to put these properties to use by constructing a composite program that implements distributed controlled operations, in the knowledge that the semantics of this program does not change under the various composition operations. Our formal model is the basis of a quantum virtual machine construction for distributed quantum computations, which we elaborate upon in the latter part of this work. This virtual machine embodies the formal semantics of DMC such that programming execution no longer needs to be analysed by hand. Far from a literal translation, it requires a substantial concretisation of the formal model at the level of data structures, naming conventions and abstraction mechanisms. At the same time we provide automatisation techniques for program specification where possible to obtain an expressive and user-friendly programming environment.

  17. Ideal Free Distribution Theory Bioscene 27 Habitat Quality and the Distribution of Fish

    E-Print Network [OSTI]

    Antonovics, Janis

    Ideal Free Distribution Theory Bioscene 27 Habitat Quality and the Distribution of Fish: Are Fish of the ideal free distribution theory. In this laboratory exercise, students will expose a group of fish to two: fish foraging, ideal free distribution theory, patchy resources, habitat quality Introduction The ideal

  18. Matrix Groups Max Neunhffer

    E-Print Network [OSTI]

    St Andrews, University of

    Matrix Groups Max Neunhöffer Introduction GAP examples Matrix groups in GAP Schreier-Sims Problems Group algebras SLPs Constructive recognition The problem Troubles Matrix Groups Max Neunhöffer University of St Andrews GAC 2010, Allahabad #12;Matrix Groups Max Neunhöffer Introduction GAP examples

  19. GROUP THERAPY Syracuse University

    E-Print Network [OSTI]

    McConnell, Terry

    your individual needs. In a group, up to eight students meet with one or two group therapists. MostGROUP THERAPY Syracuse University Counseling Center 200 Walnut Place Phone: 315-443-4715 Fax: 315-443-4276 counselingcenter.syr.edu WHAT STUDENTS SAY ABOUT GROUP THERAPY I was really anxious about joining a group

  20. An Engineering Information Service Infrastructure for Ubiquitous Computing

    E-Print Network [OSTI]

    Stanford University

    An Engineering Information Service Infrastructure for Ubiquitous Computing David Liu1 , Jinxing framework for the development of a ubiquitous computing environment for distributed engineering information services. A prototype for the ubiquitous computing environment has been developed that incorporates

  1. HEP-FCE Working Group on Libraries and Tools

    SciTech Connect (OSTI)

    Borgland, Anders; Elmer, Peter; Kirby, Michael; Patton, Simon; Potekhin, Maxim; Viren, Brett; Yanny, Brian

    2014-12-19

    The High-Energy Physics Forum for Computational Excellence (HEP-FCE) was formed by the Department of Energy as a follow-up to a recent report from the Topical Panel on Computing[1] and the associated P5 recommendation[2]. It is a pilot project distributed across the DOE Labs. During this initial incubation period the Forum is to develop a plan for a robust, long-term organization structure and a functioning web presence for forum activities and outreach, and a study of hardware and software needs across the HEP program. In the following sections we give this working group’s “vision” for aspects and qualities we wish to see in a future HEP-FCE. We then give a prioritized list of technical activities with suggested scoping and deliverables that can be expected to provide cross-experiment benefits. The remaining bulk of the report gives a technical survey of some specific “areas of opportunity” for cross-experiment benefit in the realm of software libs/tools. This survey serves as support for the vision and prioritized list. For each area we describe the ways that cross-experiment benefit is achieved today, as well as describe known failings or pitfalls where such benefit has failed to be achieved and which should be avoided in the future. For both cases, we try to give concrete examples. Each area then ends with an examination of what opportunities exist for improvements in that particular area.

  2. GRAYSTONE GROUP ADVERTISING

    E-Print Network [OSTI]

    Wu, Shin-Tson

    and GRAYSTONE GROUP ADVERTISING Partnership The University Central Florida has partnered with the Graystone Group for the purposes of facilitating recruitment advertising services. Benefits of partnering evaluations. Placing Recruitment Advertising: · Graystone Group is available to support all your recruitment

  3. Guest editorial: Special issue on human computing

    E-Print Network [OSTI]

    Pantic, Maja

    The seven articles in this special issue focus on human computing. Most focus on two challenging issues in human computing, namely, machine analysis of human behavior in group interactions and context-sensitive modeling.

  4. Draft version of "Joo Carlos Ferreira, Alberto Rodrigues da Silva, Vtor Monteiro and Joo L. Afonso. Collaborative Broker for Distrib-uted Energy Resources. in Computational Intelligence and Decision Making -Trends and Applications (From Intelligent System

    E-Print Network [OSTI]

    da Silva, Alberto Rodrigues

    In this work it is proposed the design of a system to handle Distributed Energy Resources (DER), which is a new converge under the name of DER (Distributed Energy Resources) as part of an intelligent power system://link.springer.com/chapter/10.1007/978-94-007-4722-7_34 Collaborative Broker for Distributed Energy Resources João Carlos

  5. Engineering & Computer Science

    E-Print Network [OSTI]

    Wu, Shin-Tson

    Engineering & Computer Science Most people don't think about electricity until they don't have it for Engineering Education for Distributed Energy Resources) grant is part of DOE's $12 million investment Americans get electrical power and prepare for a national shift from traditional electricity sources

  6. TEC Working Group Topic Groups Archives Communications

    Broader source: Energy.gov [DOE]

    The Communications Topic Group was convened in April 1998 to improve internal and external strategic level communications regarding DOE shipments of radioactive and other hazardous materials.

  7. Security Working Group Marty Humphrey GRID FORUM DRAFT University of Virginia

    E-Print Network [OSTI]

    Lee, Ruby B.

    Security Working Group Marty Humphrey GRID FORUM DRAFT University of Virginia Mary Thompson] Security Implications of Typical Grid Computing Usage Scenarios security-implications-01 ways to access the immense computational power of a Computational Grid, each with unique security

  8. Microsystems and Nanotechnology Group

    E-Print Network [OSTI]

    Pulfrey, David L.

    and energy storage. #12;Microsystems and Nanotechnology Group Microsystems and Nanotechnology Group 2, catalytic chemical vapor deposition of carbon nanotubes, nanowire (silicon, germanium) growth, nanocom

  9. Specific Group Hardware

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

    Specific Group Hardware Specific Group Hardware ALICE palicevo1 The Virtual Organization (VO) server. Serves as gatekeeper for ALICE jobs. It's duties include getting assignments...

  10. Normal Distribution

    E-Print Network [OSTI]

    User

    NORMAL DlSTRlBUTION TABLE. Entries represent the area under the standardized normal distribution from -w to z, Pr(Z

  11. Computing at Scale Technion Computer

    E-Print Network [OSTI]

    Schuster, Assaf

    Interdisciplinary Center for Life Sciences & Engineering COMPUTER SCIENCE ELECTRICAL ENGINEERING IBM HRL Yahoo Interdisciplinary Center for Life Sciences & Engineering COMPUTER SCIENCE ELECTRICAL ENGINEERING IBM HRL Yah oo! Mi Sciences & Engineering COMPUTER SCIENCE ELECTRICAL ENGINEERING IBM HRL Yahoo! Microsoft Google Mellanox

  12. Optical computing and computational complexity

    E-Print Network [OSTI]

    Winfree, Erik

    Optical computing and computational complexity Damien Woods Boole Centre for Research­vector algebra [9, 24]. There have been much resources devoted to designs, implementations and algorithms

  13. Optical computing and computational complexity

    E-Print Network [OSTI]

    Winfree, Erik

    Optical computing and computational complexity Damien Woods Boole Centre for Research-vector algebra [9, 24]. There have been much resources devoted to designs, implementations and algorithms

  14. TEC Working Group Topic Groups Archives Protocols

    Broader source: Energy.gov [DOE]

    The Transportation Protocols Topic Group serves as an important vehicle for DOE senior managers to assess and incorporate stakeholder input into the protocols process. The Topic Group was formed to review a series of transportation protocols developed in response to a request for DOE to be more consistent in its approach to transportation.

  15. Introduction computation

    E-Print Network [OSTI]

    Escardó, Martín

    Introduction to exact numerical computation Notes for a tutorial at ISSAC 2000 Mart#19; #16;n August 2000 Contents 1 Introduction 2 2 Floating-point computation 4 3 Exact numerical computation 8 4) for computing a syntactical representative of the mathematical entity denoted by a program (called the se

  16. Data and Computation Abstractions for Dynamic and Irregular Computations

    SciTech Connect (OSTI)

    Krishnamoorthy, Sriram; Nieplocha, Jarek; Sadayappan, Ponnuswamy

    2005-12-31

    Effective data distribution and parallelization of computations involving irregular data structures is a challenging task. We tackle the twin-problems in the context of computations involving block-sparse matrices. The programming model provides a global view of a distributed block-sparse matrix. Mechanisms are provided for the user to express the parallel tasks in the computation. Locality-aware load-balancing of the tasks ensures good scalability. The primitives are based on the Aggregate Remote Memory Copy Interface, and are inter-operable with the Global Arrays programming suite and MPI. Results are presented that demonstrate the utility of this approach.

  17. Scalable Computing Software Laboratory Technical Report Department of Computer Science

    E-Print Network [OSTI]

    Sun, Xian-He

    -He Sun Department of Computer Science Illinois Institute of Technology Parallel Execution Group Oracle.x.jin@oracle.com sun@iit.edu May 2, 2013 Technical Report No. IIT/CS-SCS2013-05 http://www.cs.iit.edu 10 West 31st, requires the power of both high performance computing and data processing. This study introduces a system

  18. COMPUTER ALGEBRA FOR ELECTRICAL & COMPUTER ENGINEERS FALL SEMESTER 2010

    E-Print Network [OSTI]

    Kalla, Priyank

    COMPUTER ALGEBRA FOR ELECTRICAL & COMPUTER ENGINEERS FALL SEMESTER 2010 Instructor: Prof. Priyank.ece.utah.edu/~kalla List of Topics to be covered in Class: 1. Commutative Algebra Basics · Preliminaries: Groups, Rings [or Class project ideas] · Model checking using algebraic geometry · Recent work on verification

  19. PASSWORD REQUIRED COMPUTER(S)

    E-Print Network [OSTI]

    Clayton, Dale H.

    Student Computing Services EQUIPMENT CHECKOUT CLASSROOM SUPPORT POSTER & 3D PRINTING BOOK, FICHE, & FILM

  20. TEC Working Group Topic Groups Manual Review

    Broader source: Energy.gov [DOE]

    This group is responsible for the update of DOE Manual 460.2-1, Radioactive Material Transportation Practices Manual.  This manual was issued on September 23, 2002, and establishes a set of...

  1. TEC Working Group Topic Groups Archives Consolidated Grant Topic Group

    Broader source: Energy.gov [DOE]

    The Consolidated Grant Topic Group arose from recommendations provided by the TEC and other external parties to the DOE Senior Executive Transportation Forum in July 1998. It was proposed that the consolidation of multiple funding streams from numerous DOE sources into a single grant would provide a more equitable and efficient means of assistance to States and Tribes affected by DOE nuclear material shipments.

  2. Software implemented fault-tolernace on distributed-memory MIMD architectures 

    E-Print Network [OSTI]

    Holland, Gavin D

    1995-01-01

    Large multicomputer systems are inherently unreliable because of their enormous complexity. This has a direct impact on distributed computations performed on these systems. As the size and execution time of these distributed computations grows, so...

  3. Eighteenth LAMPF users group meeting: proceedings

    SciTech Connect (OSTI)

    Bradbury, J.N. (comp.)

    1985-03-01

    The Eighteenth Annual LAMPF Users Group Meeting was held October 29-30, 1984, at the Clinton P. Anderson Meson Physics Facility. The program included a number of invited talks on various aspects of nuclear and particle physics as well as status reports on LAMPF and discussions of upgrade options. The LAMPF working groups met and discussed plans for the secondary beam lines, experimental programs, and computing facilities.

  4. Distributed Optimization System

    DOE Patents [OSTI]

    Hurtado, John E. (Albuquerque, NM); Dohrmann, Clark R. (Albuquerque, NM); Robinett, III, Rush D. (Tijeras, NM)

    2004-11-30

    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.

  5. MODELLING DISTRIBUTED KNOWLEDGE PROCESSES IN NEXT GENERATION MULTIDISCIPLINARY ALLIANCES *

    E-Print Network [OSTI]

    Bowker, Geoffrey C.

    MODELLING DISTRIBUTED KNOWLEDGE PROCESSES IN NEXT GENERATION MULTIDISCIPLINARY ALLIANCES * Alaina G and industrial dollars are invested in establishing academic-industry alliances and building infrastructures and technology in distributed, multidisciplinary scientific teams in the National Computational Science Alliance

  6. INFORMATION RESOURCES MANAGEMENT IN HETEROGENEOUS, DISTRIBUTED ENVIRONMENTS

    E-Print Network [OSTI]

    Hsu, Cheng

    for Manufacturing Productivity and Technology Transfer RENSSELAER POLYTECHNIC INSTITUTE Troy, NY 12180-3590 #12INFORMATION RESOURCES MANAGEMENT IN HETEROGENEOUS, DISTRIBUTED ENVIRONMENTS: A METADATABASE Conference on Computer Integrated Manufacturing, Rensselaer Polytechnic Institute, Troy, NY 12180, May 1990

  7. Distributed Graphplan Mark Iwen & Amol Dattatraya Mali

    E-Print Network [OSTI]

    Mali, Amol D.

    Distributed Graphplan Mark Iwen & Amol Dattatraya Mali Electrical Engineering & Computer Science University of Wisconsin, Milwaukee, WI 53211 iwen2724@uwm.edu, mali@miller.cs.uwm.edu, Fax: 1

  8. Computational Linguistics

    E-Print Network [OSTI]

    Manny Rayner and Amelie Banks Book Reviews Computational Lexicography for Natural Language Processing Hirst Department of Computer Science University of Toron,to Toronto, CANADA M5S 1A4 ( + 1 416) 978

  9. Tritium Focus Group- INEL

    Broader source: Energy.gov [DOE]

    Presentation from the 34th Tritium Focus Group Meeting held in Idaho Falls, Idaho on September 23-25, 2014.

  10. Computing Sciences Director's Review Vision and Strategy

    E-Print Network [OSTI]

    Distributed Systems Department National Energy Research Scientific Computing Division and Information Power generation space shuttle, etc. Scientific data analysis and computational modeling with a world-wide scope of participants ­ e.g. High Energy Physics data analysis #12;5 Computing Sciences Director's Review Applications

  11. Computing Sciences Director's Review Vision and Strategy

    E-Print Network [OSTI]

    Distributed Systems Department National Energy Research Scientific Computing Division and Information Power shuttle, etc. Scientific data analysis and computational modeling with a world-wide scope of participants ­ e.g. High Energy Physics data analysis #12;5 Computing Sciences Director's Review Applications Real

  12. Empirical distribution Theoretical2distribution

    E-Print Network [OSTI]

    Reich, David

    2 distribution. #12;Supplementary Table 1: Simulations using K axes of variation K = 1 K = 2 K = 5 K SNPs 0.4923 0.4916 0.4891 0.4860 Proportion of associations reported as significant by EIGENSTRAT adjusting along the top K axes of variation, for various values of K. #12;Page 2 Supplementary Table 2

  13. Unitary Representations of the Canonical Group, the Semi Direct Product of the Unitary and WeylHeisenberg Group

    E-Print Network [OSTI]

    ­Heisenberg group represents the eight physical degrees of freedom, time, position, momentum and energyUnitary Representations of the Canonical Group, the Semi­ Direct Product of the Unitary and Weyl­Heisenberg Group: # #1, 3# # # #1, 3# # s # #1, 3# Stephen G. Low Compaq Computers 14231 Tandem Blvd, Austin, TX

  14. RESEARCH GROUP MANUFACTURING

    E-Print Network [OSTI]

    Psarrakos, Panayiotis

    RESEARCH GROUP MANUFACTURING ADDITIVE www.lboro.ac.uk/amrg PhD Studentships in Additive by the Additive Manufacturing Research Group is based around a family of processes comprising of adding layers Additive Manufacturing Research Group in the Wolfson School of Mechanical & Manufacturing Engineering

  15. Chapter 6 Continuous Distribution: The Normal Distribution

    E-Print Network [OSTI]

    Hong, Don

    Chapter 6 Continuous Distribution: The Normal Distribution 6.1 Introduction 6.2 Properties of a Normal Distribution 6.3 The Standard Normal Distribution 6.4 Applications of Normal Distribution 6.5 The Central Limit Theorem 6.6 The Normal Approximation to the Binomial Distribution Definition. A continuous

  16. Light Computing

    E-Print Network [OSTI]

    Gordon Chalmers

    2006-10-13

    A configuration of light pulses is generated, together with emitters and receptors, that allows computing. The computing is extraordinarily high in number of flops per second, exceeding the capability of a quantum computer for a given size and coherence region. The emitters and receptors are based on the quantum diode, which can emit and detect individual photons with high accuracy.

  17. probability distributions

    E-Print Network [OSTI]

    Heller, Barbara

    probabilities in the standard normal table What is the area to the left of Z=1.51 in a standard normal curve? Z=1.51 Z=1.51 Area is 93.45% #12;Exercises · If scores are normally distributed with a mean of 30 beauty of the normal curve: No matter what and are, the area between - and + is about 68%; the area

  18. Debugging a high performance computing program

    DOE Patents [OSTI]

    Gooding, Thomas M.

    2013-08-20

    Methods, apparatus, and computer program products are disclosed for debugging a high performance computing program by gathering lists of addresses of calling instructions for a plurality of threads of execution of the program, assigning the threads to groups in dependence upon the addresses, and displaying the groups to identify defective threads.

  19. Debugging a high performance computing program

    DOE Patents [OSTI]

    Gooding, Thomas M.

    2014-08-19

    Methods, apparatus, and computer program products are disclosed for debugging a high performance computing program by gathering lists of addresses of calling instructions for a plurality of threads of execution of the program, assigning the threads to groups in dependence upon the addresses, and displaying the groups to identify defective threads.

  20. SPECTRAL BASED METHODS THAT STREAMLINE THE SEARCH FOR FAILURE SCENARIOS IN LARGE-SCALE DISTRIBUTED SYSTEMS

    E-Print Network [OSTI]

    the detection of failure sce- narios in distributed grid computing, cloud computing and other large scale performance deteriorates and fails. KEY WORDS grid computing, cloud computing, failure, spectral expan- sion systems such as computing grids and commercial cloud systems has made mass computing services available

  1. Bio-Derived Liquids to Hydrogen Distributed Reforming Working Group

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based Fuels Researchof Energy| DepartmentofEnergyiT1(BILIWG), Hydrogen

  2. Bio-Derived Liquids to Hydrogen Distributed Reforming Working Group

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based Fuels Researchof Energy| DepartmentofEnergyiT1(BILIWG),

  3. Bio-Derived Liquids to Hydrogen Distributed Reforming Working Group |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram:Y-12Power, IncBio Centers Announcement at the National Press Club

  4. Grouped exposed metal heaters

    DOE Patents [OSTI]

    Vinegar, Harold J. (Bellaire, TX); Coit, William George (Bellaire, TX); Griffin, Peter Terry (Brixham, GB); Hamilton, Paul Taylor (Houston, TX); Hsu, Chia-Fu (Granada Hills, CA); Mason, Stanley Leroy (Allen, TX); Samuel, Allan James (Kular Lumpar, ML); Watkins, Ronnie Wade (Cypress, TX)

    2012-07-31

    A system for treating a hydrocarbon containing formation is described. The system includes two or more groups of elongated heaters. The group includes two or more heaters placed in two or more openings in the formation. The heaters in the group are electrically coupled below the surface of the formation. The openings include at least partially uncased wellbores in a hydrocarbon layer of the formation. The groups are electrically configured such that current flow through the formation between at least two groups is inhibited. The heaters are configured to provide heat to the formation.

  5. Grouped exposed metal heaters

    DOE Patents [OSTI]

    Vinegar, Harold J. (Bellaire, TX); Coit, William George (Bellaire, TX); Griffin, Peter Terry (Brixham, GB); Hamilton, Paul Taylor (Houston, TX); Hsu, Chia-Fu (Granada Hills, CA); Mason, Stanley Leroy (Allen, TX); Samuel, Allan James (Kular Lumpar, MY); Watkins, Ronnie Wade (Cypress, TX)

    2010-11-09

    A system for treating a hydrocarbon containing formation is described. The system includes two or more groups of elongated heaters. The group includes two or more heaters placed in two or more openings in the formation. The heaters in the group are electrically coupled below the surface of the formation. The openings include at least partially uncased wellbores in a hydrocarbon layer of the formation. The groups are electrically configured such that current flow through the formation between at least two groups is inhibited. The heaters are configured to provide heat to the formation.

  6. Distributed energy resources customer adoption modeling with combined heat and power applications

    E-Print Network [OSTI]

    Siddiqui, Afzal S.; Firestone, Ryan M.; Ghosh, Srijay; Stadler, Michael; Edwards, Jennifer L.; Marnay, Chris

    2003-01-01

    Alex Farrell of the Energy and Resources Group, UniversityMicrogrid Distributed Energy Resource Potential Using DER-of Distributed Energy Resources: The CERTS MicroGrid

  7. Manifestly gauge invariant computations

    E-Print Network [OSTI]

    Stefano Arnone; Antonio Gatti; Tim R. Morris

    2002-07-16

    Using a gauge invariant exact renormalization group, we show how to compute the effective action, and extract the physics, whilst manifestly preserving gauge invariance at each and every step. As an example we give an elegant computation of the one-loop SU(N) Yang-Mills beta function, for the first time at finite N without any gauge fixing or ghosts. It is also completely independent of the details put in by hand, e.g. the choice of covariantisation and the cutoff profile, and, therefore, guides us to a procedure for streamlined calculations.

  8. Manifestly gauge invariant computations

    E-Print Network [OSTI]

    Arnone, S; Morris, T R; Arnone, Stefano; Gatti, Antonio; Morris, Tim R.

    2002-01-01

    Using a gauge invariant exact renormalization group, we show how to compute the effective action, and extract the physics, whilst manifestly preserving gauge invariance at each and every step. As an example we give an elegant computation of the one-loop SU(N) Yang-Mills beta function, for the first time at finite N without any gauge fixing or ghosts. It is also completely independent of the details put in by hand, e.g. the choice of covariantisation and the cutoff profile, and, therefore, guides us to a procedure for streamlined calculations.

  9. PASSWORD REQUIRED COMPUTER(S)

    E-Print Network [OSTI]

    Clayton, Dale H.

    Release Accessible Printer EQUIPMENT CHECKOUT CLASSROOM SUPPORT POSTER & 3D PRINTING BOOK, FICHE, & FILM STATIONS SCANNING STATIONS 3D SCANNER BLOOMBERG TERMINAL Information,Research, & Technology AssisstanceN LEGEND COMPUTERS PASSWORD REQUIRED COMPUTER(S) QUICK SEARCH PRINTER(S) SERVICE DESK FIRE

  10. Lecturer: Ken Birman Department of Computer Science, Cornell University

    E-Print Network [OSTI]

    Barash, Danny

    Lecturer: Ken Birman Department of Computer Science, Cornell University Title: Live Distributed difficult to get them right. Distributed software is hard to design and the tools available to developers not addressed by prior research on distributed computing platforms. The second part will look at Cornell

  11. Polarized quark distributions in nuclear matter

    E-Print Network [OSTI]

    Jason R. Smith; Gerald A. Miller

    2005-07-22

    We compute the polarized quark distribution function of a bound nucleon. The Chiral Quark-Soliton model provides the quark and antiquark substructure of the nucleon embedded in nuclear matter. Nuclear effects cause significant modifications to the polarized distributions including an enhancement of the axial coupling constant.

  12. DISTRIBUTED DATABASE SYSTEMS M. Tamer zsu

    E-Print Network [OSTI]

    Özsu, M. Tamer

    a database that is distributed across the nodes of a computer network and makes this distribution transparent of consistent and atomic execution against the database. Transparency: Extension of data independence at every site where it executes. The name comes from the fact that two rounds of messages are exchanged

  13. The Wireless Networking and Communications Group

    E-Print Network [OSTI]

    Heath Jr., - Robert W.

    The Wireless Networking and Communications Group Impact of Spatial Correlation and Distributed Antennas for Massive MIMO Systems Kien T.Truong* and Robert W. Heath Jr. Wireless Networking://www.profheath.org ! * MIMO Wireless Inc. This work was supported by Huawei Technologies #12;2 What is Massive MIMO? A very

  14. Distributed Termination Detection for Dynamic D.M. Dhamdhere Sridhar Iyer E.K.K.Reddy

    E-Print Network [OSTI]

    Iyer, Sridhar

    Distributed Termination Detection for Dynamic Systems D.M. Dhamdhere Sridhar Iyer E.K.K.Reddy Dept of Computer Science IIT Bombay Mumbai, INDIA Abstract A symmetric algorithm for detecting the termination Distributed algorithms, Distributed computation, Distributed termination, Dynamic systems, Termination

  15. Electrostatic Cooperativity of Hydroxyl Groups at Metal Oxide Surfaces

    SciTech Connect (OSTI)

    Boily, Jean F.; Lins, Roberto D.

    2009-09-24

    The O-H bond distribution of hydroxyl groups at the {110} goethite (R-FeOOH) surface was investigated by molecular dynamics. This distribution was strongly affected by electrostatic interactions with neighboring oxo and hydroxo groups. The effects of proton surface loading, simulated by emplacing two protons at different distances of separation, were diverse and generated several sets of O-H bond distributions. DFT calculations of a representative molecular cluster were also carried out to demonstrate the impact of these effects on the orientation of oxygen lone pairs in neighboring oxo groups. These effects should have strong repercussions on O-H stretching vibrations of metal oxide surfaces.h

  16. Detector Support Group

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

    browser. Concerns? Hall B Navigation DSG Home Staff Presentations Notes print version Detector Support Group Spotlight Archive Index Rotation test for the SVT detector EPICS...

  17. JLab Users Group

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

    UserResearcher Information print version UG Resources Background & Purpose Users Group Wiki By Laws Board of Directors Board of Directors Minutes Directory of Members Events...

  18. Termination Detection of Local Computations

    E-Print Network [OSTI]

    Godard, Emmanuel; Tel, Gerard

    2010-01-01

    Contrary to the sequential world, the processes involved in a distributed system do not necessarily know when a computation is globally finished. This paper investigates the problem of the detection of the termination of local computations. We define four types of termination detection: no detection, detection of the local termination, detection by a distributed observer, detection of the global termination. We give a complete characterisation (except in the local termination detection case where a partial one is given) for each of this termination detection and show that they define a strict hierarchy. These results emphasise the difference between computability of a distributed task and termination detection. Furthermore, these characterisations encompass all standard criteria that are usually formulated : topological restriction (tree, rings, or triangu- lated networks ...), topological knowledge (size, diameter ...), and local knowledge to distinguish nodes (identities, sense of direction). These re- sult...

  19. Distributed processor allocation for launching applications in a massively connected processors complex

    DOE Patents [OSTI]

    Pedretti, Kevin (Goleta, CA)

    2008-11-18

    A compute processor allocator architecture for allocating compute processors to run applications in a multiple processor computing apparatus is distributed among a subset of processors within the computing apparatus. Each processor of the subset includes a compute processor allocator. The compute processor allocators can share a common database of information pertinent to compute processor allocation. A communication path permits retrieval of information from the database independently of the compute processor allocators.

  20. Computer Science

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

    Cite Seer Department of Energy provided open access science research citations in chemistry, physics, materials, engineering, and computer science IEEE Xplore Full text...

  1. Computer System,

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

    HOW TO APPLY Applications will be accepted JANUARY 5 - FEBRUARY 13, 2016 Computing and Information Technology undegraduate students are encouraged to apply. Must be a U.S....

  2. Exascale Hardware Architectures Working Group

    SciTech Connect (OSTI)

    Hemmert, S; Ang, J; Chiang, P; Carnes, B; Doerfler, D; Leininger, M; Dosanjh, S; Fields, P; Koch, K; Laros, J; Noe, J; Quinn, T; Torrellas, J; Vetter, J; Wampler, C; White, A

    2011-03-15

    The ASC Exascale Hardware Architecture working group is challenged to provide input on the following areas impacting the future use and usability of potential exascale computer systems: processor, memory, and interconnect architectures, as well as the power and resilience of these systems. Going forward, there are many challenging issues that will need to be addressed. First, power constraints in processor technologies will lead to steady increases in parallelism within a socket. Additionally, all cores may not be fully independent nor fully general purpose. Second, there is a clear trend toward less balanced machines, in terms of compute capability compared to memory and interconnect performance. In order to mitigate the memory issues, memory technologies will introduce 3D stacking, eventually moving on-socket and likely on-die, providing greatly increased bandwidth but unfortunately also likely providing smaller memory capacity per core. Off-socket memory, possibly in the form of non-volatile memory, will create a complex memory hierarchy. Third, communication energy will dominate the energy required to compute, such that interconnect power and bandwidth will have a significant impact. All of the above changes are driven by the need for greatly increased energy efficiency, as current technology will prove unsuitable for exascale, due to unsustainable power requirements of such a system. These changes will have the most significant impact on programming models and algorithms, but they will be felt across all layers of the machine. There is clear need to engage all ASC working groups in planning for how to deal with technological changes of this magnitude. The primary function of the Hardware Architecture Working Group is to facilitate codesign with hardware vendors to ensure future exascale platforms are capable of efficiently supporting the ASC applications, which in turn need to meet the mission needs of the NNSA Stockpile Stewardship Program. This issue is relatively immediate, as there is only a small window of opportunity to influence hardware design for 2018 machines. Given the short timeline a firm co-design methodology with vendors is of prime importance.

  3. Design and Implementation of a Hypervisor-Based Platform for Dynamic Information Flow Tracking in a Distributed Environment

    E-Print Network [OSTI]

    Ermolinskiy, Andrey

    2011-01-01

    2009. IEEE Computer Society. [34] Fedora project. http://and the control VM) ran the Fedora Core [34] distribution ofvirtual machines run the Fedora Core distribution of Linux

  4. Agenda for the Derived Liquids to Hydrogen Distributed Reforming...

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

    Reforming Targets Bio-Derived Liquids to Hydrogen Distributed Reforming Working Group (BILIWG) Kick-Off Meeting Proceedings Hilton Garden Inn-BWI,Baltimore, MD October 24, 2006...

  5. Bio-Derived Liquids to Hydrogen Distributed Reforming Targets

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation by Arlene Anderson at the October 24, 2006 Bio-Derived Liquids to Hydrogen Distributed Reforming Working Group Kick-Off Meeting.

  6. Distributed Reforming of Renewable Liquids via Water Splitting...

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

    using Oxygen Transport Membrane (OTM) (Presentation) Presented at the 2007 Bio-Derived Liquids to Hydrogen Distributed Reforming Working Group held November 6, 2007 in...

  7. Distributed Hydrogen Fueling Station Based on GEGR SCPO Technology...

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

    Fueling Station Based on GEGR SCPO Technology (Presentation) Presented at the 2007 Bio-Derived Liquids to Hydrogen Distributed Reforming Working Group held November 6, 2007 in...

  8. Mechanical Engineering & Thermal Group

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    LASP's mechanical analysts also lead mechanical verification testing including: random vibration, forceMechanical Engineering & Thermal Group The Mechanical Engineering (ME) & Thermal Group at LASP has, and ground- based mechanical systems. Instrument Design Building on decades of design experience that has

  9. TEC Working Group Topic Groups Archives Protocols Meeting Summaries...

    Office of Environmental Management (EM)

    Working Group Topic Groups Archives Protocols Meeting Summaries Meeting Summaries Philadelphia TEC Meeting, Protocols Topic Group Summary - July 1999 Jacksonville TEC Meeting,...

  10. Display computers 

    E-Print Network [OSTI]

    Smith, Lisa Min-yi Chen

    2006-08-16

    computing in support of our daily routines in life. The nbaCub (nightly bedtime ambient Cues utility buddy) prototype illustrates a sample application of how DCs can be useful in the everyday environment of the home of the future. Embedding a computer into a...

  11. Computation Orchestration

    E-Print Network [OSTI]

    Misra, Jayadev

    ://www.cs.utexas.edu/users/psp Univ. of Texas TECSWeek, 2005 UNIVERSITY OF TEXAS AT AUSTIN 0 #12; DEPARTMENT OF COMPUTER SCIENCES Orc is a variable and f is an Orc expression. Evaluation of f may start threads yield zero or more values. Assign the first value to x. UNIVERSITY OF TEXAS AT AUSTIN 7 #12; DEPARTMENT OF COMPUTER SCIENCES Simple Orc

  12. CS70 Discrete Mathematics for Computer Science, Summer 2011 1. The length of a carpet produced by a textile mill is uniformly distributed between 20 feet and 25 feet,

    E-Print Network [OSTI]

    California at Berkeley, University of

    waiting for the next bus? 5. A brand new lightbulb has just been installed in our classroom, and you know the life span of a lightbulb is exponentially distributed with a mean of 50 days. (a) Suppose an electrician is scheduled to check on the lightbulb in 30 days and replace it if it is broken. What

  13. A user's guide for the STARTER computer program

    SciTech Connect (OSTI)

    Childs, R.L.; Petrie, L.M.; Landers, N.F.

    1991-12-01

    The STARTER computer code is used to prepare a starting source distribution for the criticality computer code, KENO V.a. The input description and theoretical basis of the STARTER code are described in this user's guide.

  14. Notes on the CRTDH Group Key Agreement Protocol Spyros Magliveras and Wandi Wei

    E-Print Network [OSTI]

    Magliveras, Spyros

    , the distributed schemes help in the uniform distribution of the work-load for key management and eliminate: xkzou@cs.iupui.edu Abstract Group key management (GKM) is one of the primary is- sues for secure group Key Management (GKM), Contributory Group Key Agreement, Chinese Remainder Theorem, Diffie-Hellman Key

  15. Rhodes 801-A Rhodes 801-B Group 1: Group 1

    E-Print Network [OSTI]

    Cahay, Marc

    Marie Group 3: Group 3: Bennett, Christopher Paul Davenport, Austin Lovell Creech, Nathan Alan Colburn Worcester, Austin Thomas Group 8: Group 8: TableATableBTableCTableD TableATableBTableCTableD #12;Rhodes 801

  16. Central extensions of Current Groups and the Jacobi Group 

    E-Print Network [OSTI]

    Docherty, Pamela Jane

    2012-11-28

    A current group GX is an infinite-dimensional Lie group of smooth maps from a smooth manifold X to a finite-dimensional Lie group G, endowed with pointwise multiplication. This thesis concerns current groups G§ for compact ...

  17. Supercomputing on a Shoestring: Cluster Computers at JLab | Jefferson...

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

    which describe the distribution of electric charge and current inside the nucleon. Apple To calculate the solution to a science problem, a cluster computer slices space up...

  18. January 2013 Most Viewed Documents for Mathematics And Computing...

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

    January 2013 Most Viewed Documents for Mathematics And Computing Cybersecurity through Real-Time Distributed Control Systems Kisner, Roger A ORNL; Manges, Wayne W ORNL;...

  19. Distributed Energy Systems in California's Future: A Preliminary Report Volume 2

    E-Print Network [OSTI]

    Balderston, F.

    2010-01-01

    OF UTILIZING DISTRIBUTED ENERGY TECHNOLOGIES . . . . . . .DISTRIBUTED ENERGY SYSTEMS I~N CALIF RNIA/S FUTURE: UU-6831Ur'l1E:i\\i-fS SECTION DISTRIBUTED ENERGY SYSTEMS STUDY GROUP

  20. Compute nodes

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAuditsCluster Compatibilitydefault Changes TheCompute Nodes ComputeCompute

  1. Distributed Theorem Proving for Distributed Hybrid Systems

    E-Print Network [OSTI]

    Platzer, André

    system with a varying number of arbitrarily many cars. 1 Introduction Hybrid systems with joint discrete a multi-agent system, e.g., distributed car control systems. Such systems form distributed hybrid systemsDistributed Theorem Proving for Distributed Hybrid Systems David W. Renshaw, Sarah M. Loos

  2. Seasonal Run Distribution Seasonal Run Distribution

    E-Print Network [OSTI]

    . The term "total run" defines the number of adult sockeye salmon that home to the Karluk River before197 Seasonal Run Distribution CHAPTER 6 Seasonal Run Distribution They arrived from the sea in one, what was the seasonal run distribution of its sockeye salmon? Was the original run distribution which

  3. Bivariate Generalized Exponential Distribution

    E-Print Network [OSTI]

    Kundu, Debasis

    Bivariate Generalized Exponential Distribution Debasis Kundu and Rameshwar D. Gupta Abstract Recently it is observed that the generalized exponential distribution can be used quite effectively exponential distribution so that the marginals have generalized exponential distributions. It is observed

  4. Introduction Constrained distribution

    E-Print Network [OSTI]

    Nuel, Gregory

    Introduction Constrained distribution Observed pattern distribution Counting patterns-9 September 2009 G. Nuel Counting patterns in degenerated sequences #12;Introduction Constrained distribution Observed pattern distribution Outline 1 Introduction Special letters in biological sequences Counting

  5. Computer and Human Reasoning: Single Implicative Axioms for Groups

    E-Print Network [OSTI]

    McCune, William

    with five variables was given by Sholander [6]. If we allow one of ff and fi to be a variable, it is trivial

  6. Towards Context-Aware Workflow Management for Ubiquitous Computing Feilong Tang1,2

    E-Print Network [OSTI]

    Guo, Minyi

    Towards Context-Aware Workflow Management for Ubiquitous Computing Feilong Tang1,2 , Minyi Guo1 (Grant No. 07pj14049). Abstract Ubiquitous computing is a user-centric distributed computing paradigm Ubiquitous computing is a new paradigm of distributed systems with the goal for users to access information

  7. Computer gardening

    E-Print Network [OSTI]

    Faught, Robert Townes

    1980-01-01

    This report documents the initial development of a computer-controlled system for the production of three-dimensional forms. The project involved the design and construction of a carving device which was attached to an ...

  8. Computer Security

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

    need not be registered for use in the JLF. By September 2009, it is expected that computers for use by Foreign National Investigators will have no special provisions. Notify...

  9. Discrete multivariate distributions

    E-Print Network [OSTI]

    Oleg Yu. Vorobyev; Lavrentiy S. Golovkov

    2011-02-22

    This article brings in two new discrete distributions: multidimensional Binomial distribution and multidimensional Poisson distribution. Those distributions were created in eventology as more correct generalizations of Binomial and Poisson distributions. Accordingly to eventology new laws take into account full distribution of events. Also, in article its characteristics and properties are described

  10. An Advanced Computational Scheme for the Optimization of 2D Radial Reflectors in Pressurized Water Reactors

    E-Print Network [OSTI]

    Thomas Clerc; Alain Hébert; Hadrien Leroyer; Jean-Philippe Argaud; Bertrand Bouriquet; Agélique Ponçot

    2014-05-12

    This paper presents a computational scheme for the determination of equivalent 2D multi-group heterogeneous reflectors in a Pressurized Water Reactor (PWR). The proposed strategy is to define a full-core calculation consistent with a reference lattice code calculation such as the Method Of Characteristics (MOC) as implemented in APOLLO2 lattice code. The computational scheme presented here relies on the data assimilation module known as "Assimilation de donn\\'{e}es et Aide \\`{a} l'Optimisation (ADAO)" of the SALOME platform developed at \\'{E}lectricit\\'{e} De France (EDF), coupled with the full-core code COCAGNE and with the lattice code APOLLO2. A first validation of the computational scheme is made using the OPTEX reflector model developed at \\'{E}cole Polytechnique de Montr\\'{e}al (EPM). As a result, we obtain 2D multi-group, spatially heterogeneous 2D reflectors, using both diffusion or $\\text{SP}_{\\text{N}}$ operators. We observe important improvements of the power discrepancies distribution over the core when using reflectors computed with the proposed computational scheme, and the $\\text{SP}_{\\text{N}}$ operator enables additional improvements.

  11. FUSION OF HAMILTONIAN LOOP GROUP MANIFOLDS AND COBORDISM

    E-Print Network [OSTI]

    Woodward, Christopher

    FUSION OF HAMILTONIAN LOOP GROUP MANIFOLDS AND COBORDISM E. MEINRENKEN AND C. WOODWARD Abstract. We References 32 1. Introduction Let G be a compact, connected, simply connected, simple Lie group and \\Sigma. In a sequel [15] to this paper, we apply our method to compute the coefficients of the fusion ring (Verlinde

  12. Automatic groups, subgroups and cosets Derek F. Holt

    E-Print Network [OSTI]

    Holt, Derek

    Automatic groups, subgroups and cosets Derek F. Holt Mathematics Institute, University of Warwick properties os automatic groups and their generalisations to subgroups and cosets are reviewed briefly, mainly from a computational perspective. A result about the asynchronous automaticity of an HNN extension

  13. Biographical Sketch P.A. (Rama) Ramamoorthy, Professor, Dept. of Electrical & Computer Engineering and Comp. Science,

    E-Print Network [OSTI]

    Ramamoorthy, P. A.

    .B. Electronics, Consultant - Speech Research Group General Electric Aircraft Engines Group Cincinnati ElectronicsBiographical Sketch P.A. (Rama) Ramamoorthy, Professor, Dept. of Electrical & Computer Engineering in both Electrical & Comp. Engineering (Circuit Analysis, Digital Design, Computer Architecture

  14. Risk-Constrained Microgrid Reconfiguration Using Group Sparsity

    E-Print Network [OSTI]

    Giannakis, Georgios

    Risk-Constrained Microgrid Reconfiguration Using Group Sparsity Emiliano Dall'Anese, Member, IEEE power distribution systems and microgrids, in the presence of renewable-based generation and load--Convex programming, distribution system, loss of load (LOL), microgrid, sparsity, system reconfiguration. I

  15. UNIVERSITY OF CALIFORNIA, SANTA CRUZ DEPARTMENT OF COMPUTER SCIENCE

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    UNIVERSITY OF CALIFORNIA, SANTA CRUZ DEPARTMENT OF COMPUTER SCIENCE Assistant Professor in Experimental Computer Systems The Department of Computer Science at the University of California, Santa Cruz, and service. The Computer Science Department has nationally and internationally known research groups in many

  16. UNIVERSITY OF CALIFORNIA, SANTA CRUZ DEPARTMENT OF COMPUTER SCIENCE

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    UNIVERSITY OF CALIFORNIA, SANTA CRUZ DEPARTMENT OF COMPUTER SCIENCE Assistant, Associate, or Full Professor Computer Gaming and Playable Media The Department of Computer Science at the University their research, teaching, and service. The Computer Science Department has a strong group in games and playable

  17. The "Seven Dwarfs" of Symbolic Computation* Erich L. Kaltofen

    E-Print Network [OSTI]

    Kaltofen, Erich

    The "Seven Dwarfs" of Symbolic Computation* Erich L. Kaltofen Dept. of Mathematics, North Carolina://www.kaltofen.us August 26, 2011 Abstract We present the Seven Dwarfs of Symbolic Computation, which are sequential. Computation of closed form solutions SymDwf 7. Rewrite rule systems and computational group theory We

  18. Advanced Non-Distributed Operating Systems Course Yair Wiseman

    E-Print Network [OSTI]

    Wiseman, Yair

    1 Advanced Non-Distributed Operating Systems Course Yair Wiseman Computer Science Department Bar://www.cs.biu.ac.il/~wiseman wiseman@cs.huji.ac.il Keywords: Operating Systems, Graduate Course, Operating System Kernel, Non-Distributed Operating Systems. Abstract The use of Non-Distributed Operating Systems is very common and old. Many

  19. Distributed Operating Systems ANDREW S. TANENBAUM and ROBBERT VAN RENESSE

    E-Print Network [OSTI]

    Newhall, Tia

    Distributed Operating Systems ANDREW S. TANENBAUM and ROBBERT VAN RENESSE Department of Mathematics and Computer Science, Vrije Universiteit, Amsterdam, The Netherlands Distributed operating systems have many as an introduction to distributed operating systems, and especially to current university research about them. After

  20. Distributed Key Generation in the Wild Aniket Kate1

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Distributed Key Generation in the Wild Aniket Kate1 Yizhou Huang2 Ian Goldberg2 1 Max Planck of Waterloo, Canada aniket@mpi-sws.org, {y226huan, iang}@uwaterloo.ca Abstract Distributed key generation (DKG communication model. computational setting. distributed key generation. uniform randomness. implementation 1

  1. Computational biology and high performance computing

    E-Print Network [OSTI]

    Shoichet, Brian

    2011-01-01

    Biology and High Performance Computing Manfred Zorn, TeresaBiology and High Performance Computing Presenters: Manfred99-Portland High performance computing has become one of the

  2. Computational materials: Embedding Computation into the Everyday

    E-Print Network [OSTI]

    Thomsen, Mette Ramsgard; Karmon, Ayelet

    2009-01-01

    Architecture, ubiquitous computing, material practice,the idea of ubiquitous computing has become synonymous withand interaction. Ubiquitous computing promises more indirect

  3. Supercomputing & Computation | ORNL

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

    Full Story Home | Science & Discovery | Supercomputing and Computation Supercomputing and Computational Science | Supercomputing and Computational Science SHARE OAK RIDGE, Tenn.,...

  4. stributed Computation ayth Communication De

    E-Print Network [OSTI]

    Robertazzi, Thomas G.

    there has been an increasing interest in distributed intelligent sensor networks [1- 121. This interest has. An intelligent sensor network is a collection of units with sensing, computational, and communication ability is to cooperatively monitor the environment and be able to ascertain its salient features. These intelligent sensors

  5. On the scaling of computational particle physics codes on cluster computers

    E-Print Network [OSTI]

    Sroczynski, Z; Lippert, T; Orth, B; Schilling, K; Lippert, Th.

    2003-01-01

    Many appplications in computational science are sufficiently compute-intensive that they depend on the power of parallel computing for viability. For all but the "embarrassingly parallel" problems, the performance depends upon the level of granularity that can be achieved on the computer platform. Our computational particle physics applications require machines that can support a wide range of granularities, but in general, compute-intensive state-of-the-art projects will require finely grained distributions. Of the different types of machines available for the task, we consider cluster computers. The use of clusters of commodity computers in high performance computing has many advantages including the raw price/performance ratio and the flexibility of machine configuration and upgrade. Here we focus on what is usually considered the weak point of cluster technology; the scaling behaviour when faced with a numerically intensive parallel computation. To this end we examine the scaling of our own applications f...

  6. Sandia Energy - Computational Science

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

    Computational Science Home Energy Research Advanced Scientific Computing Research (ASCR) Computational Science Computational Sciencecwdd2015-03-26T13:35:2...

  7. Computing at JLab

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

    JLab --- Accelerator Controls CAD CDEV CODA Computer Center High Performance Computing Scientific Computing JLab Computer Silo maintained by webmaster@jlab.org...

  8. Breaking classical Lie groups to finite subgroups - an automated approach

    E-Print Network [OSTI]

    Maximilian Fallbacher

    2015-07-15

    The decomposition of representations of compact classical Lie groups into representations of finite subgroups is discussed. A Mathematica package is presented that can be used to compute these branching rules using the Weyl character formula. For some low order finite groups including $A_4$ and $\\Delta(27)$ general analytical formulas are presented for the branching rules of arbitrary representations of their smallest Lie super-groups.

  9. Breaking classical Lie groups to finite subgroups - an automated approach

    E-Print Network [OSTI]

    Fallbacher, Maximilian

    2015-01-01

    The decomposition of representations of compact classical Lie groups into representations of finite subgroups is discussed. A Mathematica package is presented that can be used to compute these branching rules using the Weyl character formula. For some low order finite groups including $A_4$ and $\\Delta(27)$ general analytical formulas are presented for the branching rules of arbitrary representations of their smallest Lie super-groups.

  10. Illinois Wind Workers Group

    SciTech Connect (OSTI)

    David G. Loomis

    2012-05-28

    The Illinois Wind Working Group (IWWG) was founded in 2006 with about 15 members. It has grown to over 200 members today representing all aspects of the wind industry across the State of Illinois. In 2008, the IWWG developed a strategic plan to give direction to the group and its activities. The strategic plan identifies ways to address critical market barriers to the further penetration of wind. The key to addressing these market barriers is public education and outreach. Since Illinois has a restructured electricity market, utilities no longer have a strong control over the addition of new capacity within the state. Instead, market acceptance depends on willing landowners to lease land and willing county officials to site wind farms. Many times these groups are uninformed about the benefits of wind energy and unfamiliar with the process. Therefore, many of the project objectives focus on conferences, forum, databases and research that will allow these stakeholders to make well-educated decisions.

  11. Working Group Report: Lattice Field Theory

    SciTech Connect (OSTI)

    Blum, T.; et al.,

    2013-10-22

    This is the report of the Computing Frontier working group on Lattice Field Theory prepared for the proceedings of the 2013 Community Summer Study ("Snowmass"). We present the future computing needs and plans of the U.S. lattice gauge theory community and argue that continued support of the U.S. (and worldwide) lattice-QCD effort is essential to fully capitalize on the enormous investment in the high-energy physics experimental program. We first summarize the dramatic progress of numerical lattice-QCD simulations in the past decade, with some emphasis on calculations carried out under the auspices of the U.S. Lattice-QCD Collaboration, and describe a broad program of lattice-QCD calculations that will be relevant for future experiments at the intensity and energy frontiers. We then present details of the computational hardware and software resources needed to undertake these calculations.

  12. Upgraded Coal Interest Group

    SciTech Connect (OSTI)

    Evan Hughes

    2009-01-08

    The Upgraded Coal Interest Group (UCIG) is an EPRI 'users group' that focuses on clean, low-cost options for coal-based power generation. The UCIG covers topics that involve (1) pre-combustion processes, (2) co-firing systems and fuels, and (3) reburn using coal-derived or biomass-derived fuels. The UCIG mission is to preserve and expand the economic use of coal for energy. By reducing the fuel costs and environmental impacts of coal-fired power generation, existing units become more cost effective and thus new units utilizing advanced combustion technologies are more likely to be coal-fired.

  13. Bell, group and tangle

    SciTech Connect (OSTI)

    Solomon, A. I.

    2010-03-15

    The 'Bell' of the title refers to bipartite Bell states, and their extensions to, for example, tripartite systems. The 'Group' of the title is the Braid Group in its various representations; while 'Tangle' refers to the property of entanglement which is present in both of these scenarios. The objective of this note is to explore the relation between Quantum Entanglement and Topological Links, and to show that the use of the language of entanglement in both cases is more than one of linguistic analogy.

  14. The ChiCI Group This paper describes the work, the vision, and the

    E-Print Network [OSTI]

    welcomes associate members from similar research groups around the globe. Eight of the full membersThe ChiCI Group Abstract This paper describes the work, the vision, and the approach of the Child Computer Interaction (ChiCI) group at the University of Central Lancashire in the UK. This group, formed

  15. Clayton Ferner Department of Computer Science

    E-Print Network [OSTI]

    Ferner, Clayton

    for Scientific Applications Thesis: "Automatic Choice of Scheduling Heuristic for Parallel/Distributed Computing Staff System Verification Department 2/96 to 8/99 Head of team to identify, locate, and analyze source and Paint Supply Stores. Winston-Salem, NC Programmer ALAN PROFESSIONAL COMPUTING, INC. 8/87 to 9

  16. COMPUTING NERONSEVERI GROUPS AND CYCLE CLASS GROUPS BJORN POONEN, DAMIANO TESTA, AND RONALD VAN LUIJK

    E-Print Network [OSTI]

    Poonen, Bjorn

    finitely generated fields of characteristic not 2 ([Nyg83,NO85,Mau12,Cha12,MP13]) yields an unconditional

  17. Proc. 10th ACM Conf. on Principles of Distributed Systems, August 1991 1 How To Withstand Mobile Virus Attacks

    E-Print Network [OSTI]

    Ostrovsky, Rafail

    Virus Attacks Extended Abstract Rafail Ostrovsky Moti Yungy Abstract We initiate a study of distributed, analogous to a spread of a virus or a worm. We show how local computations (at each processor) and global in the computation. 1 Introduction Computer viruses pose one of the central problems in distributed computing today

  18. Mobile computing device configured to compute irradiance, glint, and glare of the sun

    DOE Patents [OSTI]

    Gupta, Vipin P; Ho, Clifford K; Khalsa, Siri Sahib

    2014-03-11

    Described herein are technologies pertaining to computing the solar irradiance distribution on a surface of a receiver in a concentrating solar power system or glint/glare emitted from a reflective entity. A mobile computing device includes at least one camera that captures images of the Sun and the entity of interest, wherein the images have pluralities of pixels having respective pluralities of intensity values. Based upon the intensity values of the pixels in the respective images, the solar irradiance distribution on the surface of the entity or glint/glare corresponding to the entity is computed by the mobile computing device.

  19. 12. Automatic Groups Suppose

    E-Print Network [OSTI]

    Gilman, Robert

    for the generator a to the automaton in Figure 1, we obtain a synchronized automaton which accepts a linear language12. Automatic Groups Suppose : G is a choice of generators, and R is a rational language which are all synchronous and rational. We will define synchronous presently. R and are called an automatic

  20. Exploratory Experimentation and Computation

    SciTech Connect (OSTI)

    Bailey, David H.; Borwein, Jonathan M.

    2010-02-25

    We believe the mathematical research community is facing a great challenge to re-evaluate the role of proof in light of recent developments. On one hand, the growing power of current computer systems, of modern mathematical computing packages, and of the growing capacity to data-mine on the Internet, has provided marvelous resources to the research mathematician. On the other hand, the enormous complexity of many modern capstone results such as the Poincare conjecture, Fermat's last theorem, and the classification of finite simple groups has raised questions as to how we can better ensure the integrity of modern mathematics. Yet as the need and prospects for inductive mathematics blossom, the requirement to ensure the role of proof is properly founded remains undiminished.

  1. Compute Nodes

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAuditsCluster Compatibilitydefault Changes TheCompute Nodes Compute Nodes

  2. Computing Information

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAuditsCluster Compatibilitydefault Changes TheComputeComputingInformation From

  3. Computing Sciences

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAuditsCluster Compatibilitydefault Changes TheComputeComputingInformation

  4. Prior distribution Andrew Gelman

    E-Print Network [OSTI]

    Gelman, Andrew

    Prior distribution Andrew Gelman Volume 3, pp 1634­1637 in Encyclopedia of Environmetrics (ISBN, 2002 #12;Prior distribution The prior distribution is a key part of Bayesian infer- ence (see Bayesian with the probability distribution of new data to yield the posterior distribution, which in turn is used for future

  5. Data Mining Group VNG Corporation

    E-Print Network [OSTI]

    Shahabi, Cyrus

    Data Mining Group VNG Corporation Data Mining Group_VNG Corporation 1 #12;Data Mining Group_VNG Corporation 2 1 ·Introduction 2 ·Edge Rank 3 ·Parameter Estimate 4 ·Conclusion #12;Data Mining Group_VNG Corporation 3 #12;Data Mining Group_VNG Corporation 4 #12; User's self activity Update status Write blogs

  6. TEC Working Group Topic Groups Archives Communications Conference...

    Office of Environmental Management (EM)

    Communications Conference Call Summaries TEC Working Group Topic Groups Archives Communications Conference Call Summaries Conference Call Summaries Conference Call Summary April...

  7. TEC Working Group Topic Groups Routing Conference Call Summaries...

    Office of Environmental Management (EM)

    Routing Conference Call Summaries TEC Working Group Topic Groups Routing Conference Call Summaries CONFERENCE CALL SUMMARIES January 31, 2008 December 6, 2007 October 4, 2007...

  8. TEC Working Group Topic Groups Security Conference Call Summaries...

    Office of Environmental Management (EM)

    Conference Call Summaries TEC Working Group Topic Groups Security Conference Call Summaries Conference Call Summaries August 17, 2006 (Draft) July 18, 2006 (Draft) June 20, 2006...

  9. TEC Working Group Topic Groups Archives Mechanics of Funding...

    Office of Environmental Management (EM)

    Mechanics of Funding and Techical Assistance TEC Working Group Topic Groups Archives Mechanics of Funding and Techical Assistance Mechanics of Funding and Techical Assistance Items...

  10. CORRELATION BETWEEN GROUP LOCAL DENSITY AND GROUP LUMINOSITY

    SciTech Connect (OSTI)

    Deng Xinfa; Yu Guisheng

    2012-11-10

    In this study, we investigate the correlation between group local number density and total luminosity of groups. In four volume-limited group catalogs, we can conclude that groups with high luminosity exist preferentially in high-density regions, while groups with low luminosity are located preferentially in low-density regions, and that in a volume-limited group sample with absolute magnitude limit M{sub r} = -18, the correlation between group local number density and total luminosity of groups is the weakest. These results basically are consistent with the environmental dependence of galaxy luminosity.

  11. TEC Working Group Topic Groups Rail Meeting Summaries | Department...

    Office of Environmental Management (EM)

    - March 15, 2006 Pueblo TEC Meeting, Rail Topic Group Summary - September 22, 2005 Phoenix TEC Meeting, Rail Topic Group Summary - April 4, 2005 Minneapolis TEC Meeting, Rail...

  12. Computation Orchestration

    E-Print Network [OSTI]

    Misra, Jayadev

    CCS or CSP operators. UNIVERSITY OF TEXAS AT AUSTIN 1 #12; DEPARTMENT OF COMPUTER SCIENCES Orc SCIENCES Orc A new kind of assignment x:2 f where x is a variable and f is an Orc expression. Evaluation of f yields zero or more values. Assign the first value to x. An Orc expression is #15; Simple: Site

  13. Computation Orchestration

    E-Print Network [OSTI]

    Misra, Jayadev

    CCS or CSP operators. UNIVERSITY OF TEXAS AT AUSTIN 1 #12; DEPARTMENT OF COMPUTER SCIENCES Orc SCIENCES Orc A new kind of assignment x:2 f where x is a variable and f is an Orc expression. Evaluation of f yields zero or more values. Assign the first value to x. An Orc expression is #15; Simple: Sit

  14. WORKSHOP ON COMPUTATIONAL SCIENCE

    E-Print Network [OSTI]

    as the overall scientific output is related to the computing capacity. High Performance Computing (HPC

  15. Method for distributed agent-based non-expert simulation of manufacturing process behavior

    DOE Patents [OSTI]

    Ivezic, Nenad; Potok, Thomas E.

    2004-11-30

    A method for distributed agent based non-expert simulation of manufacturing process behavior on a single-processor computer comprises the steps of: object modeling a manufacturing technique having a plurality of processes; associating a distributed agent with each the process; and, programming each the agent to respond to discrete events corresponding to the manufacturing technique, wherein each discrete event triggers a programmed response. The method can further comprise the step of transmitting the discrete events to each agent in a message loop. In addition, the programming step comprises the step of conditioning each agent to respond to a discrete event selected from the group consisting of a clock tick message, a resources received message, and a request for output production message.

  16. GEORG-AUGUST-UNIVERSITT Computer Security

    E-Print Network [OSTI]

    Grabowski, Jens

    » Cybercrime and cyberterrorism » Information technology of little use without security 3 #12;GEORGGEORG-AUGUST-UNIVERSITÄT GÖTTINGEN Computer Security Overview and Introduction Computer Security Security @ Göttingen » Research group for comuter security » Prof. Dr. Konrad Rieck » 4 PhD students (+ 2

  17. Computer Science UNDERGRADUATE

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    447 Computer Science UNDERGRADUATE PROGRAMS The Department of Computer Science provides undergraduate instruction leading to the bachelor's degree in computer science. This program in computer science is accredited by the Computer Science Accreditation Board (CSAB), a specialized accrediting body recognized

  18. COMPUTER ENGINEERING EECS Department

    E-Print Network [OSTI]

    COMPUTER ENGINEERING EECS Department The Electrical Engineering and Computer Science (EECS) Department at WSU offers undergraduate degrees in electrical engineering, computer engineering and computer science. The EECS Department offers Master of Science degrees in computer science, electrical engineering

  19. COMPUTER SCIENCE EECS Department

    E-Print Network [OSTI]

    COMPUTER SCIENCE EECS Department The Electrical Engineering and Computer Science (EECS) Department at WSU offers undergraduate degrees in electrical engineering, computer engineering and computer science. The EECS Department offers master of science degrees in computer science, electrical engineering

  20. The Evolution of Cloud Computing in ATLAS

    E-Print Network [OSTI]

    Taylor, Ryan P; The ATLAS collaboration; Brasolin, Franco; Cordeiro, Cristovao; Desmarais, Ron; Field, Laurence; Gable, Ian; Giordano, Domenico; Di Girolamo, Alessandro; Hover, John; Leblanc, Matthew Edgar; Love, Peter; Paterson, Michael; Sobie, Randall; Zaytsev, Alexandr

    2015-01-01

    The ATLAS experiment has successfully incorporated cloud computing technology and cloud resources into its primarily grid-based model of distributed computing. Cloud R&D activities continue to mature and transition into stable production systems, while ongoing evolutionary changes are still needed to adapt and refine the approaches used, in response to changes in prevailing cloud technology. In addition, completely new developments are needed to handle emerging requirements. This paper describes the overall evolution of cloud computing in ATLAS. The current status of the virtual machine (VM) management systems used for harnessing infrastructure as a service (IaaS) resources are discussed. Monitoring and accounting systems tailored for clouds are needed to complete the integration of cloud resources within ATLAS' distributed computing framework. We are developing and deploying new solutions to address the challenge of operation in a geographically distributed multi-cloud scenario, including a system for ma...

  1. The Evolution of Cloud Computing in ATLAS

    E-Print Network [OSTI]

    Taylor, Ryan P.; The ATLAS collaboration; Love, Peter; Leblanc, Matthew Edgar; Di Girolamo, Alessandro; Paterson, Michael; Gable, Ian; Sobie, Randall; Field, Laurence

    2015-01-01

    The ATLAS experiment has successfully incorporated cloud computing technology and cloud resources into its primarily grid-based model of distributed computing. Cloud R&D activities continue to mature and transition into stable production systems, while ongoing evolutionary changes are still needed to adapt and refine the approaches used, in response to changes in prevailing cloud technology. In addition, completely new developments are needed to handle emerging requirements. This work will describe the overall evolution of cloud computing in ATLAS. The current status of the VM management systems used for harnessing IAAS resources will be discussed. Monitoring and accounting systems tailored for clouds are needed to complete the integration of cloud resources within ATLAS' distributed computing framework. We are developing and deploying new solutions to address the challenge of operation in a geographically distributed multi-cloud scenario, including a system for managing VM images across multiple clouds, ...

  2. CSTEC Working Groups

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAudits &BradburyMay 1, 2013, 4:15pmEnergyNovemberCompute

  3. Distribution Grid Integration

    Broader source: Energy.gov [DOE]

    The DOE Systems Integration team funds distribution grid integration research and development (R&D) activities to address the technical issues that surround distribution grid planning,...

  4. About Industrial Distributed Energy

    Broader source: Energy.gov [DOE]

    The Advanced Manufacturing Office's (AMO's) Industrial Distributed Energy activities build on the success of predecessor DOE programs on distributed energy and combined heat and power (CHP) while...

  5. Power Systems Group Home Page

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

    Systems Division Search APS ... Search Button About ASD General Information ASD Groups ESHQA Operations Argonne Home > Advanced Photon Source > Power Systems Group This page is...

  6. Deformations of polyhedra and polygons by the unitary group

    SciTech Connect (OSTI)

    Livine, Etera R.

    2013-12-15

    We introduce the set of framed (convex) polyhedra with N faces as the symplectic quotient C{sup 2N}//SU(2). A framed polyhedron is then parametrized by N spinors living in C{sup 2} satisfying suitable closure constraints and defines a usual convex polyhedron plus extra U(1) phases attached to each face. We show that there is a natural action of the unitary group U(N) on this phase space, which changes the shape of faces and allows to map any (framed) polyhedron onto any other with the same total (boundary) area. This identifies the space of framed polyhedra to the Grassmannian space U(N)/ (SU(2)×U(N?2)). We show how to write averages of geometrical observables (polynomials in the faces' area and the angles between them) over the ensemble of polyhedra (distributed uniformly with respect to the Haar measure on U(N)) as polynomial integrals over the unitary group and we provide a few methods to compute these integrals systematically. We also use the Itzykson-Zuber formula from matrix models as the generating function for these averages and correlations. In the quantum case, a canonical quantization of the framed polyhedron phase space leads to the Hilbert space of SU(2) intertwiners (or, in other words, SU(2)-invariant states in tensor products of irreducible representations). The total boundary area as well as the individual face areas are quantized as half-integers (spins), and the Hilbert spaces for fixed total area form irreducible representations of U(N). We define semi-classical coherent intertwiner states peaked on classical framed polyhedra and transforming consistently under U(N) transformations. And we show how the U(N) character formula for unitary transformations is to be considered as an extension of the Itzykson-Zuber to the quantum level and generates the traces of all polynomial observables over the Hilbert space of intertwiners. We finally apply the same formalism to two dimensions and show that classical (convex) polygons can be described in a similar fashion trading the unitary group for the orthogonal group. We conclude with a discussion of the possible (deformation) dynamics that one can define on the space of polygons or polyhedra. This work is a priori useful in the context of discrete geometry but it should hopefully also be relevant to (loop) quantum gravity in 2+1 and 3+1 dimensions when the quantum geometry is defined in terms of gluing of (quantized) polygons and polyhedra.

  7. Computational Combustion

    SciTech Connect (OSTI)

    Westbrook, C K; Mizobuchi, Y; Poinsot, T J; Smith, P J; Warnatz, J

    2004-08-26

    Progress in the field of computational combustion over the past 50 years is reviewed. Particular attention is given to those classes of models that are common to most system modeling efforts, including fluid dynamics, chemical kinetics, liquid sprays, and turbulent flame models. The developments in combustion modeling are placed into the time-dependent context of the accompanying exponential growth in computer capabilities and Moore's Law. Superimposed on this steady growth, the occasional sudden advances in modeling capabilities are identified and their impacts are discussed. Integration of submodels into system models for spark ignition, diesel and homogeneous charge, compression ignition engines, surface and catalytic combustion, pulse combustion, and detonations are described. Finally, the current state of combustion modeling is illustrated by descriptions of a very large jet lifted 3D turbulent hydrogen flame with direct numerical simulation and 3D large eddy simulations of practical gas burner combustion devices.

  8. Computer System,

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit the following commentsMethodsCompositional6 Computational

  9. ALS Communications Group

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach HomeA Better Anode Design to Improve4AJ01) (See Energy Level79AJ01)19^ U N I T ECommunications Group

  10. Working Group Reports

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking WithTelecentricNCubictheThepresented in1: Model or Working Group

  11. Helms Research Group - Home

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journalvivo Low-DoseOptions forHeavy-Duty Waste HaulerHeikoHe,Helms Group

  12. Research Groups - Cyclotron Institute

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) by Carbon-RichProtonAboutNuclearPrincipalResearchResearchResearch Groups

  13. Running Jobs by Group

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) byMultidayAlumni > The Energy MaterialsRooftopRunning Jobs by Group

  14. DOE STGWG Group

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-in electric vehicle10nominateEnergyThis memo fromDepartment ofSTGWG Group

  15. Computer Science Department of Computer Science

    E-Print Network [OSTI]

    Heller, Barbara

    Computer Science Department of Computer Science Stuart Building 10 W. 31st St. Chicago, IL 60616: Bogdan Korel The study of computer science is the inquiry into the nature of computation and its use in solving problems in an information-based society. Computer science is an evolving discipline, but it has

  16. COMPUTER POWER CONSUMPTION BENCHMARKING FOR GREEN COMPUTING

    E-Print Network [OSTI]

    Way, Thomas

    COMPUTER POWER CONSUMPTION BENCHMARKING FOR GREEN COMPUTING A Thesis Presented to the Faculty Computing Sciences Full Title of Thesis Computer Power Consumption Benchmarking for Green Computing Dr would like to thank my friend and colleague Christopher Continanza for our past collaborations on power

  17. CMS Computing: Performance and Outlook

    E-Print Network [OSTI]

    Kenneth Bloom; for the CMS Collaboration

    2011-10-02

    After years of development, the CMS distributed computing system is now in full operation. The LHC continues to set records for instantaneous luminosity, and CMS continues to record data at 300 Hz. Because of the intensity of the beams, there are multiple proton-proton interactions per beam crossing, leading to larger and larger event sizes and processing times. The CMS computing system has responded admirably to these challenges. We present the current status of the system, describe the recent performance, and discuss the challenges ahead and how we intend to meet them.

  18. Maestro: A cloud computing framework with automated locking (Invited Paper)

    E-Print Network [OSTI]

    Krovi, Venkat

    Maestro: A cloud computing framework with automated locking (Invited Paper) Murat Demirbas challenge for distributed systems programming and cloud computing. Using locks is the most common technique (shared-memory), Maestro improves productivity and lowers the cost of entry to cloud computing backend

  19. Advanced Environments and Tools for High Performance Computing

    E-Print Network [OSTI]

    Walker, David W.

    Advanced Environments and Tools for High Performance Computing Problem-Solving Environments Environments and Tools for High Performance Computing. The conference was chaired by Professor D. W. Walker and managing distributed high performance comput- ing resources is important for a PSE to meet the requirements

  20. Software Reuse in High Performance Computing Shirley Browne

    E-Print Network [OSTI]

    Dongarra, Jack

    Software Reuse in High Performance Computing Shirley Browne University of Tennessee 107 Ayres Hall high performance computing architectures in the form of distributed memory mul­ tiprocessors have and cost of programming applications to run on these machines. Economical use of high performance computing

  1. Software Reuse in High Performance Computing Shirley Browne

    E-Print Network [OSTI]

    Dongarra, Jack

    Software Reuse in High Performance Computing Shirley Browne University of Tennessee 107 Ayres Hall high performance computing architectures in the form of distributed memorymul- tiprocessors have become of programming applications to run on these machines. Economical use of high performance computing and subsequent

  2. Network Architecture Testbeds as Platforms for Ubiquitous Computing

    E-Print Network [OSTI]

    Roscoe, Timothy

    Network Architecture Testbeds as Platforms for Ubiquitous Computing By Timothy Roscoe EH Z¨urich, Switzerland Distributed Systems research, and in particular Ubiquitous Computing, has tra- ditionally assumed architecture, and also outline a radically different view of networking for Ubiquitous Computing

  3. Ubiquitous Computing Environment for Project Management Services , Jinxing Cheng2

    E-Print Network [OSTI]

    Wiederhold, Gio

    1 Ubiquitous Computing Environment for Project Management Services David Liu1 , Jinxing Cheng2 for the development of a ubiquitous computing environment for distributed engineering services. Two fundamental issues communication technologies make ubiquitous computing possible. We will soon have an interconnected web of small

  4. Light front distribution of the chiral condensate

    E-Print Network [OSTI]

    Lei Chang; Craig D. Roberts; Sebastian M. Schmidt

    2013-09-19

    The pseudoscalar projection of the pion's Poincare'-covariant Bethe-Salpeter amplitude onto the light-front may be understood to provide the probability distribution of the chiral condensate within the pion. Unlike the parton distribution amplitudes usually considered and as befitting a collective effect, this condensate distribution receives contributions from all Fock space components of the pion's light-front wave-function. We compute this condensate distribution using the Dyson-Schwinger equation (DSE) framework and show the result to be a model-independent feature of quantum chromodynamics (QCD). Our analysis establishes that this condensate is concentrated in the neighbourhood of the boundaries of the distribution's domain of support. It thereby confirms the dominant role played by many-particle Fock states within the pion's light-front wave function in generating the chiral condensate on the light-front and verifies that light-front longitudinal zero modes do not play a material role in that process.

  5. Distributed optimization system and method

    DOE Patents [OSTI]

    Hurtado, John E.; Dohrmann, Clark R.; Robinett, III, Rush D.

    2003-06-10

    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.

  6. 142 Computer Science 143 Computer science is concerned with the study of computers and computing,

    E-Print Network [OSTI]

    Richards-Kortum, Rebecca

    142 Computer Science 143 Computer science is concerned with the study of computers and computing-world computational problems. Computer science is the intellectual discipline underlying information technology, which is widely accepted now as the ascendant technology of the next century. Students in computer science at Rice

  7. March, 2001 Neutron Scattering Group

    E-Print Network [OSTI]

    Johnson, Peter D.

    March, 2001 Neutron Scattering Group A High Performance Hybrid Spectrometer for theA High of the instrument performance · Igor Zaliznyak · Laurence Passell OutlineOutline #12;Neutron Scattering GroupNeutron states in single crystals.single crystals. #12;Neutron Scattering GroupNeutron Scattering Group What

  8. High Temperature Membrane Working Group

    Broader source: Energy.gov [DOE]

    This presentation provides an overview of the High Temperature Membrane Working Group Meeting in May 2007.

  9. Data Management Group Annual Report

    E-Print Network [OSTI]

    Toronto, University of

    Data Management Group Annual Report 1999 prepared by: Data Management Group Joint Program APPENDIX A: DATA REQUESTS ..................................... 11 #12;Data Management Group 1999 Annual Report Page 1 of 14 INTRODUCTION The Data Management Group is a research project located at the Joint

  10. AMO Industrial Distributed Energy: Industrial Distributed Energy...

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

    in owning and operating costs, thereby improving the economics of distributed power generation using reciprocating gas engines. Caterpillar's Phase I technologies have...

  11. Multimedia Environmental Distribution of Nanomaterials

    E-Print Network [OSTI]

    Liu, Haoyang Haven

    2015-01-01

    6. ! Multimedia Environmental Distribution of Engineeredon Simulations of the Multimedia Distribution of ParticulateCohen, Multimedia Environmental Distribution of Engineered

  12. Distributed QR Factorization Based on Randomized Algorithms

    E-Print Network [OSTI]

    Zemen, Thomas

    Distributed QR Factorization Based on Randomized Algorithms Hana Strakov´a1 , Wilfried N. Gansterer of Algorithms Hana.Strakova@univie.ac.at, Wilfried.Gansterer@univie.ac.at 2 Forschungszentrum Telekommunication Wien, Austria Thomas.Zemen@ftw.at Abstract. Most parallel algorithms for matrix computations assume

  13. Energy Balanced Chain in Distributed Sensor Networks

    E-Print Network [OSTI]

    Howitt, Ivan

    Energy Balanced Chain in Distributed Sensor Networks Ivan Howitt Electrical & Computer Engineering because of their higher traffic. This paper suggests an energy balanced chain (EBC) which can efficiently the energy balance optimization problem in terms of the segmentation space. By adjusting the transmission

  14. Functional vs Object-Oriented Distributed Languages ?

    E-Print Network [OSTI]

    Trinder, Phil

    , R. Loogen 2 , and P.W. Trinder 1 1 Department of Computing and Electrical Engineering, Heriot University, Germany; fpriebe,loogeng@informatik.uni-marburg.de 1 Introduction Improved network technology are bought at the price of an elaborate implementation. Although there have been many distributed func

  15. University of Delaware Department of Electrical and Computer Engineering

    E-Print Network [OSTI]

    Gao, Guang R.

    University of Delaware Department of Electrical and Computer Engineering Computer Architecture of the art. To meet that need, Thomas Sterling's group at Louisiana State University are developing Paralle parallelism than the current state of the art. To meet that need, Thomas Sterling's group at Louisiana State

  16. ECE 481 Ethics in Electrical and Computer Engineering Dept. of Electrical and Computer Engineering

    E-Print Network [OSTI]

    on a water distribution "grid") for persons in under-developed countries. Your company did some preliminary electricity sources. · Pooling resources to develop a single system for a large number of people couldECE 481 Ethics in Electrical and Computer Engineering Dept. of Electrical and Computer Engineering

  17. PANOPTICON: An Omniscient Lock Broker for Efficient Distributed Transactions in the Datacenter

    E-Print Network [OSTI]

    Krovi, Venkat

    PANOPTICON: An Omniscient Lock Broker for Efficient Distributed Transactions in the Datacenter Abstract For datacenter applications that require tight synchroniza- tion, transactions are commonly execution is a big challenge for distributed systems programming and datacenter computing in par- ticular

  18. Information Infrastructures in Distributed Environments: Algorithms for Mobile Networks and Resource Allocation 

    E-Print Network [OSTI]

    Chung, Hyun-Chul

    2013-10-28

    A distributed system is a collection of computing entities that communicate with each other to solve some problem. Distributed systems impact almost every aspect of daily life (e.g., cellular networks and the Internet); ...

  19. Optimizing Water Efficiency in Distributed Data Centers Shaolei Ren

    E-Print Network [OSTI]

    Ren, Shaolei

    Optimizing Water Efficiency in Distributed Data Centers Shaolei Ren School of Computing embarrassing lack of attention to the enormity of data center water consumption despite its emergence water efficiency. We first identify two characteristics of data center water efficiency: water

  20. Implementaion and performance of checkpointing schemes in a distributed environment 

    E-Print Network [OSTI]

    Soni, Sameer

    1994-01-01

    The use of distributed systems has become increasingly popular due to increased computing power, reliability, availability, and efficiency in processing. Checkpointing and rollback recovery is a well known technique used to restore a system from...

  1. Integrity and access control in untrusted content distribution networks

    E-Print Network [OSTI]

    Fu, Kevin E. (Kevin Edward), 1976-

    2005-01-01

    A content distribution network (CDN) makes a publisher's content highly available to readers through replication on remote computers. Content stored on untrusted servers is susceptible to attack, but a reader should have ...

  2. Cluster Computing: High-Performance, High-Availability, and High-Throughput Processing on a Network of Computers

    E-Print Network [OSTI]

    Buyya, Rajkumar

    Laboratory Dept. of Computer Science and Software Engineering The University of Melbourne, Australia {csyeo, raj}@cs.mu.oz.au 2 Parallel and Distributed Systems Laboratory Department of Computer Science for cluster computing was developed in the 1960s by IBM as an alternative of linking large mainframes

  3. Master of Computer Science Master of Computer Science

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    ­ Dependable systems ­ High performance computing 5 Computational Linguistics ­ Computational and formal

  4. Winter 2015 Positive Parenting Group

    E-Print Network [OSTI]

    Winter 2015 Positive Parenting Group This is an eight-week parent group series starting Monday, January 12, 2015 Future parent group sessions to be held: January 26 (no group 19th ) February 2, 9 and 23 (no group 16th ) and March 2, 9 and 16 6:00 p.m. to 8:00 p.m. Room 145 of the Clinical Services

  5. A Self-Adaptive Middleware for Efficient Routing in Distributed Sensor Networks

    E-Print Network [OSTI]

    Duan, Sisi; Sun, Jingtao

    2015-01-01

    and D. Rubenstein: Energy-efficient computing for wildlifeIsland Hop- ping: Efficient mobility-assisted forwarding inAdaptive Middleware for Efficient Routing in Distributed

  6. Object{Based Consistency in a Distributed Shared Memory Thilo Kielmann and Guido Wirtz

    E-Print Network [OSTI]

    Kielmann, Thilo

    . of Electrical Engineering and Computer Science, Univ. of Siegen, Germany fkielmann price/performance ratio of distributed com- puting systems 3, 9]. Despite the fact that object

  7. Supercomputing | Computational Engineering | ORNL

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

    Discrete Event Simulations, Sequential and Parallel Analytics Cloud for Computational Analysis Reversible Computing Computer Science Data Earth Sciences Energy Science Future...

  8. Computational Science and Engineering

    E-Print Network [OSTI]

    Giger, Christine

    Computational Science and Engineering Research Profile The Computational Science and Engineering and Process Engineering Computational Science and Engineering Laboratory Prof. Dr. Petros Koumoutsakos petros

  9. High Performance Computing

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

    HPC INL Logo Home High-Performance Computing INL's high-performance computing center provides general use scientific computing capabilities to support the lab's efforts in advanced...

  10. High Performance Computing

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

    Computing HPC High Performance Computing (HPC) Providing world-class high performance computing capability that enables unsurpassed solutions to complex problems of strategic...

  11. Definition of a Random Variable Distribution Functions Properties of Distribution Functions Random Variables and Distribution Functions

    E-Print Network [OSTI]

    Watkins, Joseph C.

    Definition of a Random Variable Distribution Functions Properties of Distribution Functions Topic 7 Random Variables and Distribution Functions Distribution Functions 1 / 11 #12;Definition of a Random Variable Distribution Functions Properties of Distribution Functions Outline Definition of a Random

  12. Computing Resources

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit the following commentsMethodsCompositional6EnergyComputing

  13. Compute Nodes

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAuditsCluster Compatibilitydefault Changes The ComputationalsolutionCompute

  14. Energy optimization of water distribution system

    SciTech Connect (OSTI)

    Not Available

    1993-02-01

    In order to analyze pump operating scenarios for the system with the computer model, information on existing pumping equipment and the distribution system was collected. The information includes the following: component description and design criteria for line booster stations, booster stations with reservoirs, and high lift pumps at the water treatment plants; daily operations data for 1988; annual reports from fiscal year 1987/1988 to fiscal year 1991/1992; and a 1985 calibrated KYPIPE computer model of DWSD`s water distribution system which included input data for the maximum hour and average day demands on the system for that year. This information has been used to produce the inventory database of the system and will be used to develop the computer program to analyze the system.

  15. Data reprocessing on worldwide distributed systems

    SciTech Connect (OSTI)

    Diesburg, Mike; Wicke, Daniel; /Fermilab

    2004-12-01

    The D0 experiment faces many challenges enabling access to large datasets for physicists on 4 continents. The strategy followed is to make use of worldwide distributed computing clusters. Since the begin of Tevatron Run-II (March 2001) all Monte-Carlo simulations are produced outside of Fermilab on remote systems. For analyses a system of regional analysis centres (RACs) was established which supply the associated institutes with the data. This structure which is similar to the Tier structure foreseen for LHC was used in autumn 2003 to reprocess all D0-data with the up-to-date and much improved reconstruction software. With these achievements D0 is the first high energy physics experiment to have implemented and operated all essential computing tasks on non-dedicated, worldwide distributed systems. The experiences gained in D0 can be applied to evaluate the LHC computing model.

  16. Working Group Report: Sensors

    SciTech Connect (OSTI)

    Artuso, M.; et al.,

    2013-10-18

    Sensors play a key role in detecting both charged particles and photons for all three frontiers in Particle Physics. The signals from an individual sensor that can be used include ionization deposited, phonons created, or light emitted from excitations of the material. The individual sensors are then typically arrayed for detection of individual particles or groups of particles. Mounting of new, ever higher performance experiments, often depend on advances in sensors in a range of performance characteristics. These performance metrics can include position resolution for passing particles, time resolution on particles impacting the sensor, and overall rate capabilities. In addition the feasible detector area and cost frequently provides a limit to what can be built and therefore is often another area where improvements are important. Finally, radiation tolerance is becoming a requirement in a broad array of devices. We present a status report on a broad category of sensors, including challenges for the future and work in progress to solve those challenges.

  17. Computational materials: Embedding Computation into the Everyday

    E-Print Network [OSTI]

    Thomsen, Mette Ramsgard; Karmon, Ayelet

    2009-01-01

    Computational materials: Embedding Computation into thepaper presents research into material design merging thean integrated part of our material surroundings. Rather than

  18. Computational biology and high performance computing

    E-Print Network [OSTI]

    Shoichet, Brian

    2011-01-01

    Paper in Computational Biology The First Step Beyond theM . Glaeser, Mol. & Cell Biology, UCB and Life SciencesLBNL-44460 Computational Biology and High Performance

  19. Useful Probability Distributions Standard Normal Distribution

    E-Print Network [OSTI]

    the proportion t as a variable which is continuous over the interval (0,1) For small consignments, say N Consignment of tablets, a proportion of which are suspected drugs. For large consignments, probability distribution of the proportion t which are drugs can be modeled with a beta distribution, which treats

  20. Trace-Based Analysis and Prediction of Cloud Computing User Behavior Using the Fractal Modeling Technique

    E-Print Network [OSTI]

    Pedram, Massoud

    Trace-Based Analysis and Prediction of Cloud Computing User Behavior Using the Fractal Modeling and technology. In this paper, we investigate the characteristics of the cloud computing requests received the alpha- stable distribution. Keywords- cloud computing; alpha-stable distribution; fractional order

  1. A Multi-core High Performance Computing Framework for Probabilistic Solutions of

    E-Print Network [OSTI]

    Franchetti, Franz

    1 A Multi-core High Performance Computing Framework for Probabilistic Solutions of Distribution. In this paper we developed a generally applicable high performance computing framework for Monte Carlo--Distribution systems, high performance comput- ing, Monte Carlo simulation, probabilistic load flow, renewable energy

  2. Cellular Computing and Least Squares for partial differential problems parallel solving

    E-Print Network [OSTI]

    Nicolas Fressengeas; Hervé Frezza-Buet

    2010-01-29

    This paper shows how partial differential problems can be solved thanks to cellular computing and an adaptation of the Least Squares Finite Elements Method. As cellular computing can be implemented on distributed parallel architectures, this method allows the distribution of a resource demanding differential problem over a computer network.

  3. Distributed storage with communication costs

    E-Print Network [OSTI]

    Armstrong, Craig Kenneth

    2011-01-01

    in Electrical & Computer Engineering (Communication Theoryin Electrical & Computer Engineering (Communication Theory

  4. Pelvic Normal Tissue Contouring Guidelines for Radiation Therapy: A Radiation Therapy Oncology Group Consensus Panel Atlas

    SciTech Connect (OSTI)

    Gay, Hiram A., E-mail: hgay@radonc.wustl.edu [Washington University School of Medicine, St Louis, MO (United States); Barthold, H. Joseph [Commonwealth Hematology and Oncology, Weymouth, MA (United States); Beth Israel Deaconess Medical Center, Boston, MA (Israel); O'Meara, Elizabeth [Radiation Therapy Oncology Group, Philadelphia, PA (United States); Bosch, Walter R. [Washington University School of Medicine, St Louis, MO (United States); El Naqa, Issam [Department of Radiation Oncology, McGill University Health Center, Montreal, Quebec (Canada); Al-Lozi, Rawan [Washington University School of Medicine, St Louis, MO (United States); Rosenthal, Seth A. [Radiation Oncology Centers, Radiological Associates of Sacramento, Sacramento, CA (United States); Lawton, Colleen [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States); Lee, W. Robert [Department of Radiation Oncology, Duke University Medical Center, Durham, NC (United States); Sandler, Howard [Cedars-Sinai Medical Center, Los Angeles, CA (United States); Zietman, Anthony [Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA (United States); Myerson, Robert [Washington University School of Medicine, St Louis, MO (United States); Dawson, Laura A. [Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto, Toronto, Ontario (Canada); Willett, Christopher [Department of Radiation Oncology, Duke University Medical Center, Durham, NC (United States); Kachnic, Lisa A. [Department of Radiation Oncology, Boston Medical Center, Boston University School of Medicine, Boston, MA (United States); Jhingran, Anuja [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX (United States); Portelance, Lorraine [University of Miami, Miami, FL (United States); Ryu, Janice [Radiation Oncology Centers, Radiological Associates of Sacramento, Sacramento, CA (United States); and others

    2012-07-01

    Purpose: To define a male and female pelvic normal tissue contouring atlas for Radiation Therapy Oncology Group (RTOG) trials. Methods and Materials: One male pelvis computed tomography (CT) data set and one female pelvis CT data set were shared via the Image-Guided Therapy QA Center. A total of 16 radiation oncologists participated. The following organs at risk were contoured in both CT sets: anus, anorectum, rectum (gastrointestinal and genitourinary definitions), bowel NOS (not otherwise specified), small bowel, large bowel, and proximal femurs. The following were contoured in the male set only: bladder, prostate, seminal vesicles, and penile bulb. The following were contoured in the female set only: uterus, cervix, and ovaries. A computer program used the binomial distribution to generate 95% group consensus contours. These contours and definitions were then reviewed by the group and modified. Results: The panel achieved consensus definitions for pelvic normal tissue contouring in RTOG trials with these standardized names: Rectum, AnoRectum, SmallBowel, Colon, BowelBag, Bladder, UteroCervix, Adnexa{sub R}, Adnexa{sub L}, Prostate, SeminalVesc, PenileBulb, Femur{sub R}, and Femur{sub L}. Two additional normal structures whose purpose is to serve as targets in anal and rectal cancer were defined: AnoRectumSig and Mesorectum. Detailed target volume contouring guidelines and images are discussed. Conclusions: Consensus guidelines for pelvic normal tissue contouring were reached and are available as a CT image atlas on the RTOG Web site. This will allow uniformity in defining normal tissues for clinical trials delivering pelvic radiation and will facilitate future normal tissue complication research.

  5. Method and structure for skewed block-cyclic distribution of lower-dimensional data arrays in higher-dimensional processor grids

    DOE Patents [OSTI]

    Chatterjee, Siddhartha (Yorktown Heights, NY); Gunnels, John A. (Brewster, NY)

    2011-11-08

    A method and structure of distributing elements of an array of data in a computer memory to a specific processor of a multi-dimensional mesh of parallel processors includes designating a distribution of elements of at least a portion of the array to be executed by specific processors in the multi-dimensional mesh of parallel processors. The pattern of the designating includes a cyclical repetitive pattern of the parallel processor mesh, as modified to have a skew in at least one dimension so that both a row of data in the array and a column of data in the array map to respective contiguous groupings of the processors such that a dimension of the contiguous groupings is greater than one.

  6. Climate Modeling using High-Performance Computing

    SciTech Connect (OSTI)

    Mirin, A A

    2007-02-05

    The Center for Applied Scientific Computing (CASC) and the LLNL Climate and Carbon Science Group of Energy and Environment (E and E) are working together to improve predictions of future climate by applying the best available computational methods and computer resources to this problem. Over the last decade, researchers at the Lawrence Livermore National Laboratory (LLNL) have developed a number of climate models that provide state-of-the-art simulations on a wide variety of massively parallel computers. We are now developing and applying a second generation of high-performance climate models. Through the addition of relevant physical processes, we are developing an earth systems modeling capability as well.

  7. The Role of Mathematical Logic in Computer Science and Mathematics

    E-Print Network [OSTI]

    Kikuchi, Makoto

    The Role of Mathematical Logic in Computer Science and Mathematics Summary: Early developments branches of Mathematical Logic: Set Theory, Model Theory, Computability Theory and Proof Theory Connections with Computer Science and Mathematics The Kobe Group: The Foundation of Information Sciences Division

  8. PARMON: A Comprehensive Cluster Monitoring System School of Computing Science

    E-Print Network [OSTI]

    Melbourne, University of

    1 PARMON: A Comprehensive Cluster Monitoring System RAJKUMAR School of Computing Science Queensland@fit.qut.edu.au KRISHNA MOHAN and BINDU GOPAL Operating Systems Group Centre for Development of Advanced Computing 2 together as one system. Rapid changes in both areas of computing and communication (availability

  9. The Computational Sciences. Research

    E-Print Network [OSTI]

    Christensen, Dan

    The Computational Sciences. Research activities range from the theoretical foundations. The teaching mission of the computational sciences includes almost every student in the University for computational hardware and software. The computational sciences are undergoing explosive growth worldwide

  10. Human perceptual deficits as factors in computer interface test and evaluation

    SciTech Connect (OSTI)

    Bowser, S.E.

    1992-06-01

    Issues related to testing and evaluating human computer interfaces are usually based on the machine rather than on the human portion of the computer interface. Perceptual characteristics of the expected user are rarely investigated, and interface designers ignore known population perceptual limitations. For these reasons, environmental impacts on the equipment will more likely be defined than will user perceptual characteristics. The investigation of user population characteristics is most often directed toward intellectual abilities and anthropometry. This problem is compounded by the fact that some deficits capabilities tend to be found in higher-than-overall population distribution in some user groups. The test and evaluation community can address the issue from two primary aspects. First, assessing user characteristics should be extended to include tests of perceptual capability. Secondly, interface designs should use multimode information coding.

  11. Neil 65 Group Picture Neil 65 Group Picture

    E-Print Network [OSTI]

    Mohar, Bojan

    Neil 65 Group Picture Neil 65 Group Picture December 14, 2003 Row 1: Tom Dowling, Nolan Mc Glover, Mike Lohman, Sangil Oum, Blair Dowling http://www.math.ohio-state.edu/~maharry/Neil65/pictures/Neil65GroupPicture.html25.9.2004 18:19:04 #12;

  12. Computer, Computational, and Statistical Sciences

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAuditsCluster Compatibilitydefault Changes TheCompute NodesSciencePrograms

  13. Techreport NCRG/97/025. Under review for Neural Computation Computation with infinite neural networks

    E-Print Network [OSTI]

    Williams, Chris

    networks Christopher K. I. Williams Neural Computing Research Group Department of Computer Science Abstract For neural networks with a wide class of weight priors, it can be shown that in the limit a neural network by maximizing the likelihood of a finite amount of data it makes no sense to use a network

  14. Computational Biologist Department of Bioinformatics & Computational Biology, Genentech Inc, South San Francisco, CA

    E-Print Network [OSTI]

    Borenstein, Elhanan

    , proficiency in high-level programming languages (e.g. Perl, Python) and statistical computing (R) are highly San Francisco, CA The Position The position is in a statistical genetics group responsible in statistical/human genetics or bioinformatics/computational biology. A record of scientific publications

  15. The Magellanic Group and the Seven Dwarfs

    E-Print Network [OSTI]

    Elena D'Onghia; George Lake

    2008-09-22

    The Magellanic Clouds were the largest members of a group of dwarf galaxies that entered the Milky Way (MW) halo at late times. This group, dominated by the LMC, contained ~4% of the mass of the Milky Way prior to its accretion and tidal disruption, but ~70% of the known dwarfs orbiting the MW. Our theory addresses many outstanding problems in galaxy formation associated with dwarf galaxies. First, it can explain the planar orbital configuration populated by some dSphs in the MW. Second, it provides a mechanism for lighting up a subset of dwarf galaxies to reproduce the cumulative circular velocity distribution of the satellites in the MW. Finally, our model predicts that most dwarfs will be found in association with other dwarfs. The recent discovery of Leo V (Belokurov et al. 2008), a dwarf spheroidal companion of Leo IV, and the nearby dwarf associations supports our hypothesis.

  16. Spatially DistributedSpatially Distributed Experimentation toExperimentation to

    E-Print Network [OSTI]

    Rubloff, Gary W.

    : Spatially distributed atomic layer deposition Spatially Distributed Atomic LayerSpatially Distributed Atomic properties Significance Atomic layer deposition (ALD) is widely sought for its atomic-scale thickness control, MKS Instruments #12;Rubloff: Spatially distributed atomic layer deposition Spatially Distributed

  17. A New ClientServer Architecture for Distributed Query Processing

    E-Print Network [OSTI]

    with an essentially ``free'' backward reduction capability is proposed. We explore in detail the benefits and costsA New Client­Server Architecture for Distributed Query Processing Zhe Li Kenneth A. Ross Computer Science Department Computer Science Department Columbia University Columbia University New York, NY 10027

  18. Aspects of a Collaborative Learning Environment using Distributed Virtual Environments

    E-Print Network [OSTI]

    the last few years to incorporate information technology in the learning environment. The growing needAspects of a Collaborative Learning Environment using Distributed Virtual Environments C. Bouras, Computer Engineering and Informatics Dept., Univ. of Patras & Computer Technology Institute GR-26500 Rion

  19. Quantum Algorithms for Unit Group and principal ideal problem

    E-Print Network [OSTI]

    Hong Wang; Zhi Ma

    2010-09-01

    Computing the unit group and solving the principal ideal problem for a number field are two of the main tasks in computational algebraic number theory. This paper proposes efficient quantum algorithms for these two problems when the number field has constant degree. We improve these algorithms proposed by Hallgren by using a period function which is not one-to-one on its fundamental period. Furthermore, given access to a function which encodes the lattice, a new method to compute the basis of an unknown real-valued lattice is presented.

  20. THE ABUNDANCE OF BULLET GROUPS IN ?CDM

    SciTech Connect (OSTI)

    Fernández-Trincado, J. G.; Forero-Romero, J. E.; Foex, G.; Motta, V.; Verdugo, T. E-mail: je.forero@uniandes.edu.co

    2014-06-01

    We estimate the expected distribution of displacements between the two dominant dark matter (DM) peaks (DM-DM displacements) and between the DM and gaseous baryon peak (DM-gas displacements) in DM halos with masses larger than 10{sup 13} h {sup –1} M {sub ?}. As a benchmark, we use the observation of SL2S J08544–0121, which is the lowest mass system (1.0 × 10{sup 14} h {sup –1} M {sub ?}) observed so far, featuring a bi-modal DM distribution with a dislocated gas component. We find that (50 ± 10)% of the DM halos with circular velocities in the range 300-700 km s{sup –1} (groups) show DM-DM displacements equal to or larger than 186 ± 30 h {sup –1} kpc as observed in SL2S J08544–0121. For DM halos with circular velocities larger than 700 km s{sup –1} (clusters) this fraction rises to (70 ± 10)%. Using the same simulation, we estimate the DM-gas displacements and find that 0.1%-1.0% of the groups should present separations equal to or larger than 87 ± 14 h {sup –1} kpc, corresponding to our observational benchmark; for clusters, this fraction rises to (7 ± 3)%, consistent with previous studies of DM to baryon separations. Considering both constraints on the DM-DM and DM-gas displacements, we find that the number density of groups similar to SL2S J08544–0121 is ?6.0 × 10{sup –7} Mpc{sup –3}, three times larger than the estimated value for clusters. These results open up the possibility for a new statistical test of ?CDM by looking for DM-gas displacements in low mass clusters and groups.