Sample records for non-opec production path

  1. Fact #836: September 1, Non-OPEC Countries Supply Nearly Two...

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

    per day) Year Non-OPEC Countries OPEC Countries Total Percent OPEC Canada Mexico Russia Other Non-OPEC Nigeria Saudi Arabia Venezuela Other OPEC Countries 1960 0.12 0.02 0.00...

  2. Fact #836: September 1, 2014 Non-OPEC Countries Supply Nearly...

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

    Fact 836: September 1, 2014 Non-OPEC Countries Supply Nearly Two-thirds of U.S. Petroleum Imports - Dataset Fact 836: September 1, 2014 Non-OPEC Countries Supply Nearly...

  3. Non-OPEC oil supply continues to grow

    SciTech Connect (OSTI)

    Knapp, D.H. [International Energy Agency, Paris (France)

    1995-12-25T23:59:59.000Z

    Global reserves of crude oil remain at 1 trillion bbl, according to OGJ`s annual survey of producing countries. Significant gains are in Brazil, Colombia, Congo, Egypt, Libya, Nigeria, Oman, and Papua New Guinea. Decreases were reported by Indonesia, Norway, the U.K., Iran, Canada, Mexico, and the US. Natural gas reserves slipped to 4.9 quadrillion cu ft. The major production trend is a lasting surge from outside of OPEC. This year`s Worldwide Production report begins with a detailed analysis of this crucial development by an international authority. This article discusses the OECD outlook by region and the turnaround in production in the former Soviet Union.

  4. Tax policy can change the production path: A model of optimal oil extraction in Alaska

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia

    production units (fields) on Alaska's North Slope. We use adjustment cost and discount rate to calibrate approach was to simulate economically optimal production paths for units on the Alaska North Slope, compare production for the seven individual units on Alaska's North Slope: Prudhoe Bay, Kuparuk River, Milne Point

  5. (D. Merriam, U of Kansas, ed) Predicting the Peak in World Oil Production

    E-Print Network [OSTI]

    Alfred J. Cavallo

    recently predicted that world oil production could continue to increase for more than three decades, based on the recent US Geological Survey (USGS) evaluation of world oil resources and a simple, transparent model. However, it can be shown that this model is not consistent with actual oil production records in many different regions, particularly that of the US, from which it was derived. A more careful application of the EIA model, using the same resource estimates, indicates that at best non-OPEC oil production can increase for less than two decades, and should begin to decline at the latest sometime between 2015 and 2020. OPEC will at this point completely control the world oil market and will need to meet increased demand as well as compensate for declining production of non-OPEC producers. OPEC could control the market even sooner than this, given its much larger share of proven oil reserves, probable difficulties in transforming non-OPEC undiscovered reserves into proven reserves, and the converging interests of all oil producers as reserves are depleted. This has significant implications for the world economy and for US national security.

  6. Production and evolution path of dileptons at HADES energies

    E-Print Network [OSTI]

    Schmidt, K; Vogel, S; Sturm, C; Bleicher, M; StŲcker, H

    2008-01-01T23:59:59.000Z

    Dilepton production in intermediate energy nucleus-nucleus collisions as well as in elementary proton-proton reactions is analysed within the UrQMD transport model. For C+C collisions at 1 AGeV and 2 AGeV the resulting invariant mass spectra are compared to recent HADES data. We find that the experimental spectrum for C+C at 2 AGeV is slightly overestimated by the theoretical calculations in the region around the vector meson peak, but fairly described in the low mass region, where the data is satisfactorily saturated by the Dalitz decay of the $\\eta$ meson and the $\\Delta$ resonance. At 1 AGeV an underestimation of the experimental data is found, pointing that at lower energies the low mass region is not fully saturated by standardly parametrized $\\Delta$ Dalitz decays alone. Furthermore, predictions for dilepton spectra for $pp$ reactions at 1.25 GeV, 2.2 GeV and 3.5 GeV and Ar+KCl reactions at 1.75 AGeV are presented. The study is complemented by a detailed investigation of the role of absorption of the pa...

  7. Production and evolution path of dileptons at HADES energies

    E-Print Network [OSTI]

    K. Schmidt; E. Santini; S. Vogel; C. Sturm; M. Bleicher; H. Stoecker

    2008-12-08T23:59:59.000Z

    Dilepton production in intermediate energy nucleus-nucleus collisions as well as in elementary proton-proton reactions is analysed within the UrQMD transport model. For C+C collisions at 1 AGeV and 2 AGeV the resulting invariant mass spectra are compared to recent HADES data. We find that the experimental spectrum for C+C at 2 AGeV is slightly overestimated by the theoretical calculations in the region around the vector meson peak, but fairly described in the low mass region, where the data is satisfactorily saturated by the Dalitz decay of the $\\eta$ meson and the $\\Delta$ resonance. At 1 AGeV an underestimation of the experimental data is found, pointing that at lower energies the low mass region is not fully saturated by standardly parametrized $\\Delta$ Dalitz decays alone. Furthermore, predictions for dilepton spectra for $pp$ reactions at 1.25 GeV, 2.2 GeV and 3.5 GeV and Ar+KCl reactions at 1.75 AGeV are presented. The study is complemented by a detailed investigation of the role of absorption of the parent particles on the corresponding dilepton yields in the regime which has so far been probed by HADES.

  8. Lambda Station: Alternate network path forwarding for production SciDAC applications

    SciTech Connect (OSTI)

    Grigoriev, Maxim; Bobyshev, Andrey; Crawford, Matt; DeMar, Phil; Grigaliunas, Vyto; Moibenko, Alexander; Petravick, Don; /Fermilab; Newman, Harvey; Steenberg, Conrad; Thomas, Michael; /Caltech

    2007-09-01T23:59:59.000Z

    The LHC era will start very soon, creating immense data volumes capable of demanding allocation of an entire network circuit for task-driven applications. Circuit-based alternate network paths are one solution to meeting the LHC high bandwidth network requirements. The Lambda Station project is aimed at addressing growing requirements for dynamic allocation of alternate network paths. Lambda Station facilitates the rerouting of designated traffic through site LAN infrastructure onto so-called 'high-impact' wide-area networks. The prototype Lambda Station developed with Service Oriented Architecture (SOA) approach in mind will be presented. Lambda Station has been successfully integrated into the production version of the Storage Resource Manager (SRM), and deployed at US CMS Tier1 center at Fermilab, as well as at US-CMS Tier-2 site at Caltech. This paper will discuss experiences using the prototype system with production SciDAC applications for data movement between Fermilab and Caltech. The architecture and design principles of the production version Lambda Station software, currently being implemented as Java based web services, will also be presented in this paper.

  9. Reaction Products with Internal Energy beyond the Kinematic Limit Result from Trajectories Far from the Minimum Energy Path: An Example from

    E-Print Network [OSTI]

    Zare, Richard N.

    Reaction Products with Internal Energy beyond the Kinematic Limit Result from Trajectories Far from the minimum energy path are, in general, responsible for production of highly internally excited products-7 For this collision energy and product vibrational level, rotational states j e 18 are energetically allowed, but only

  10. World Oil Prices and Production Trends in AEO2008 (released in AEO2008)

    Reports and Publications (EIA)

    2008-01-01T23:59:59.000Z

    Annual Energy Outlook 2008 (AEO) defines the world oil price as the price of light, low-sulfur crude oil delivered in Cushing, Oklahoma. Since 2003, both "above ground" and "below ground" factors have contributed to a sustained rise in nominal world oil prices, from $31 per barrel in 2003 to $69 per barrel in 2007. The AEO2008 reference case outlook for world oil prices is higher than in the AEO2007 reference case. The main reasons for the adoption of a higher reference case price outlook include continued significant expansion of world demand for liquids, particularly in non-OECD (Organization for Economic Cooperation and Development) countries, which include China and India; the rising costs of conventional non-OPEC (Organization of the Petroleum Exporting Countries) supply and unconventional liquids production; limited growth in non-OPEC supplies despite higher oil prices; and the inability or unwillingness of OPEC member countries to increase conventional crude oil production to levels that would be required for maintaining price stability. The Energy Information Administration will continue to monitor world oil price trends and may need to make further adjustments in future AEOs.

  11. ARM - PI Product - Large Scale Ice Water Path and 3-D Ice Water Content

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUC : XDCResearchWarmingMethaneProductsCSSEF ARMBEProductsIn-SituProductsLarge

  12. Assumptions to the Annual Energy Outlook 2013

    Gasoline and Diesel Fuel Update (EIA)

    Key assumptions The level of oil production by OPEC is a key factor influencing the oil price projections incorporated into AEO2013. Non-OPEC production, worldwide regional...

  13. MWRRET Value-Added Product: The Retrieval of Liquid Water Path and Precipitable Water Vapor from Microwave Radiometer (MWR) Data Sets (Revision 2)

    SciTech Connect (OSTI)

    Gaustad, KL; Turner, DD; McFarlane, SA

    2011-07-25T23:59:59.000Z

    This report provides a short description of the Atmospheric Radiation Measurement (ARM) Climate Research Facility microwave radiometer (MWR) Retrieval (MWRRET) value-added product (VAP) algorithm. This algorithm utilizes a complementary physical retrieval method and applies brightness temperature offsets to reduce spurious liquid water path (LWP) bias in clear skies resulting in significantly improved precipitable water vapor (PWV) and LWP retrievals. We present a general overview of the technique, input parameters, output products, and describe data quality checks. A more complete discussion of the theory and results is given in Turner et al. (2007b).

  14. THE PATH OF CARBON IN PHOTOSYNTHESIS

    E-Print Network [OSTI]

    Bassham, J.A.; Calvin, Melvin

    2008-01-01T23:59:59.000Z

    The Path of Carbon in Photosynthesis, Prentice-Hall, Ino. ,to StUdy the Products of Photosynthesis as Depending on the48 THE PATH OF CARBON IN PHOTOSYNTHESIS J. A. Bassham and

  15. Microsoft Word - STEO supplement non-OPEC supply Final-2.doc

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines AboutDecember 2005 (Thousand9,0,InformationU.S. Crude Oil3 1 Short-TermJuly805)09 1 May08

  16. Fact #836: September 1, 2014 Non-OPEC Countries Supply Nearly Two-thirds of

    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:YearRound-UpHeat PumpRecord ofESPCofConstructionofFYOxide Emission Standards, Modeland- DatasetU.S.

  17. Robust design as a driver of engine cylinder heads evolution : a framework for identifying product improvement paths

    E-Print Network [OSTI]

    Gůmez de la Mora, Luz de Lourdes

    2005-01-01T23:59:59.000Z

    The fundamental goal of Robust Design is to improve the quality of a product by minimizing the effects of variation. A key contributor to robustness over the long term is R&D. Therefore, a framework is desired to help ...

  18. Path of Carbon in Photosynthesis III

    E-Print Network [OSTI]

    Benson, A.A.; Calvin, M.

    2008-01-01T23:59:59.000Z

    TIIE PAT3 OF C R O IN PHOTOSYNTHESIS A B K A. A. Benson andin the early products of photosynthesis, we Stepka, W. , inP THE PATH OF CARBON IN PHOTOSYNTHESIS. 111. BY A. A. Benson

  19. Market Power in the World Oil Market: Evidence for an OPEC Cartel and an Oligopolistic Non-OPEC Fringe

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia

    contributions to the existing literature. First, it takes to data the theoretical model of optimal nonrenewable- ilicza & Pindyck, 1976; Pindyck, 1976; Cremer & Weitzman, 1976), stock effects in extraction costs

  20. Market Power in the World Oil Market: Evidence for an OPEC Cartel and an Oligopolistic Non-OPEC Fringe

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia

    important contributions to the existing literature. First, it takes to data the theoretical model of optimal (Hny- ilicza & Pindyck, 1976; Pindyck, 1976; Cremer & Weitzman, 1976), stock effects in extraction

  1. Fact #836: September 1, Non-OPEC Countries Supply Nearly Two-thirds of U.S.

    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:YearRound-UpHeat PumpRecord ofESPCofConstructionofFYOxide Emission Standards, Modeland-

  2. Tortuous path chemical preconcentrator

    DOE Patents [OSTI]

    Manginell, Ronald P. (Albuquerque, NM); Lewis, Patrick R. (Albuquerque, NM); Adkins, Douglas R. (Albuquerque, NM); Wheeler, David R. (Albuquerque, NM); Simonson, Robert J. (Cedar Crest, NM)

    2010-09-21T23:59:59.000Z

    A non-planar, tortuous path chemical preconcentrator has a high internal surface area having a heatable sorptive coating that can be used to selectively collect and concentrate one or more chemical species of interest from a fluid stream that can be rapidly released as a concentrated plug into an analytical or microanalytical chain for separation and detection. The non-planar chemical preconcentrator comprises a sorptive support structure having a tortuous flow path. The tortuosity provides repeated twists, turns, and bends to the flow, thereby increasing the interfacial contact between sample fluid stream and the sorptive material. The tortuous path also provides more opportunities for desorption and readsorption of volatile species. Further, the thermal efficiency of the tortuous path chemical preconcentrator is comparable or superior to the prior non-planar chemical preconcentrator. Finally, the tortuosity can be varied in different directions to optimize flow rates during the adsorption and desorption phases of operation of the preconcentrator.

  3. Feasible Path Synthesis for Automated Guided Vehicles

    E-Print Network [OSTI]

    Vuik, Kees

    Feasible Path Synthesis for Automated Guided Vehicles Reijer Idema 2005 TU Delft FROG Navigation for Automated Guided Vehicles Author: Reijer Idema Supervisors: prof.dr.ir. P. Wesseling (TU Delft) dr.ir. Kees is a manufacturer of Automated Guided Vehicles. They have developed a multitude of vehicles that transport products

  4. Nicaragua 2010 Visit to Path Nicaragua Office

    E-Print Network [OSTI]

    Anderson, Richard

    with vaccine storage ­ Temperature monitoring and alerts ­ Reporting stock levels · Partners ­ Development · Revision by external software company · Ongoing product management by Path 1/19/2010 Nicaragua 2010 6 #12 but functional and rational" 1/19/2010 23Nicaragua 2010 #12;Cell Phone Coverage · Two companies ­ Claro

  5. Flight Path 12

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Region service area. TheEPSCI HomeTours, Programs and2 This flight path is

  6. Flight Path 14 - DANCE

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Region service area. TheEPSCI HomeTours, Programs and2 This flight path is4

  7. Flight Path 15R

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Region service area. TheEPSCI HomeTours, Programs and2 This flight path is4LR

  8. Flight Path 5

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Region service area. TheEPSCI HomeTours, Programs and2 This flight pathR

  9. (Intrusion Path Analysis)

    SciTech Connect (OSTI)

    Hardwick, R D

    1989-01-01T23:59:59.000Z

    The design and implementation of an Intrusion Path Analysis (IPA) function came about as a result of the upgrades to the security systems at the Savannah River Site (SRS), near Aiken, South Carolina. The stated requirements for IPA were broad, leaving opportunity for creative freedom during design and development. The essential elements were that it: be based on alarm and sensor state data; consider insider as well as outsider threats; be flexible and easily enabled or disabled; not be processor intensive; and provide information to the operator in the event the analysis reveals possible path openings. The final design resulted from many and varied conceptual inputs, and will be implemented in selected test areas at SRS. It fulfils the requirements and: allows selective inclusion of sensors in the analysis; permits the formation of concentric rings of protection around assets; permits the defining of the number of rings which must be breached before issuing an alert; evaluates current sensor states as well as a recent, configurable history of sensor states; considers the sensors' physical location, with respect to the concentric rings; and enables changes for maintenance without software recompilation. 3 figs.

  10. Shortest Path Algorithms: A Comparison

    E-Print Network [OSTI]

    Golden, Bruce L., 1950-

    In this note we present some computational evidence to suggest that a version of Bellman's shortest path algorithm outperforms Treesort- Dijkstra's for a certain class of networks.

  11. Collabortive Authoring of Walden's Paths

    SciTech Connect (OSTI)

    Yuanling, Dr. Li [Texas A& M University; Bogen, Paul Logasa [ORNL; Pogue, Daniel [Halliburton Energy Services; Furuta, Dr. Richard Keith [Texas A& M University; ShipmanIII, Dr. Frank Major [Texas A& M University

    2012-01-01T23:59:59.000Z

    Collaborative Authoring of Walden's Paths. Theory and Practice of Digital Libraries. Lecture Notes in Computer Sciences 2012.Lecture Notes in Computer Sciences 2012

  12. Thermoalgebras and path integral

    SciTech Connect (OSTI)

    Khanna, F.C. [Theoretical Physics Institute, University of Alberta, Edmonton, AB T6G 2J1 (Canada); TRIUMF, Vancouver, BC, V6T 2A3 (Canada)], E-mail: khanna@phys.ualberta.ca; Malbouisson, A.P.C. [Centro Brasileiro de Pesquisas Fisicas/MCT, 22290-180 Rio de Janeiro, RJ (Brazil)], E-mail: adolfo@cbpf.br; Malbouisson, J.M.C. [Instituto de Fisicas, Universidade Federal da Bahia, 40210-340 Salvador, BA (Brazil)], E-mail: jmalboui@ufba.br; Santana, A.E. [Instituto de Fisicas, Universidade de Brasilia, 70910-900 Brasilia, DF (Brazil)], E-mail: asantana@fis.unb.br

    2009-09-15T23:59:59.000Z

    Using a representation for Lie groups closely associated with thermal problems, we derive the algebraic rules of the real-time formalism for thermal quantum field theories, the so-called thermo-field dynamics (TFD), including the tilde conjugation rules for interacting fields. These thermo-group representations provide a unified view of different approaches for finite-temperature quantum fields in terms of a symmetry group. On these grounds, a path integral formalism is constructed, using Bogoliubov transformations, for bosons, fermions and non-abelian gauge fields. The generalization of the results for quantum fields in (S{sup 1}){sup d}xR{sup D-d} topology is addressed.

  13. Structural Testing: An Introduction Flow Graphs Path Testing Conclusions Path Testing

    E-Print Network [OSTI]

    Mousavi, Mohammad

    Structural Testing: An Introduction Flow Graphs Path Testing Conclusions Path Testing Mohammad Mousavi Eindhoven University of Technology, The Netherlands Software Testing, 2013 Mousavi: Path Testing #12;Structural Testing: An Introduction Flow Graphs Path Testing Conclusions Outline Structural

  14. Structural Testing: An Introduction Flow Graphs Path Testing Conclusions Path Testing

    E-Print Network [OSTI]

    Mousavi, Mohammad

    Structural Testing: An Introduction Flow Graphs Path Testing Conclusions Path Testing Mohammad Mousavi Eindhoven University of Technology, The Netherlands Software Testing, 2012 Mousavi: Path Testing #12;Structural Testing: An Introduction Flow Graphs Path Testing Conclusions Outline Structural

  15. Hydrogen Education Curriculum Path at Michigan Technological...

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

    Curriculum Path at Michigan Technological University Hydrogen Education Curriculum Path at Michigan Technological University 2009 DOE Hydrogen Program and Vehicle Technologies...

  16. Survivable paths in multilayer networks

    E-Print Network [OSTI]

    Parandehgheibi, Marzieh

    2012-01-01T23:59:59.000Z

    We consider the problem of protection in multilayer networks. In single-layer net- works, a pair of disjoint paths can be used to provide protection for a source-destination pair. However, this approach cannot be directly ...

  17. COMPUTER SCIENCE: MISCONCEPTIONS, CAREER PATHS

    E-Print Network [OSTI]

    Hristidis, Vagelis

    COMPUTER SCIENCE: MISCONCEPTIONS, CAREER PATHS AND RESEARCH CHALLENGES School of Computing Undergraduate Student) #12;Computer Science Misconceptions Intro to Computer Science - Florida International University 2 Some preconceived ideas & stereotypes about Computer Science (CS) are quite common

  18. Collaborative Authoring of Walden's Paths

    E-Print Network [OSTI]

    Li, Yuanling

    2012-10-19T23:59:59.000Z

    The World Wide Web contains rich collections of digital materials that can be used in education and learning settings. The collaborative authoring prototype of Walden's Paths targets two groups of users: educators and learners. From the perspective...

  19. Morse theory in path space

    E-Print Network [OSTI]

    Yong Seung Cho; Soon-Tae Hong

    2007-06-01T23:59:59.000Z

    We consider the path space of a curved manifold on which a point particle is introduced in a conservative physical system with constant total energy to formulate its action functional and geodesic equation together with breaks on the path. The second variation of the action functional is exploited to yield the geodesic deviation equation and to discuss the Jacobi fields on the curved manifold. We investigate the topology of the path space using the action functional on it and its physical meaning by defining the gradient of the action functional, the space of bounded flow energy solutions and the moduli space associated with the critical points of the action functional. We also consider the particle motion on the $n$-sphere $S^{n}$ in the conservative physical system to discuss explicitly the moduli space of the path space and the corresponding homology groups.

  20. Evaluation of steam path audits

    SciTech Connect (OSTI)

    Caudill, M.B. [Tri-State Generation and Transmission Association, Inc., Montrose, CO (United States); Griebenow, R.D. [SAIC, Huntersville, NC (United States)

    1995-06-01T23:59:59.000Z

    Tri-State Generation and Transmission association is the operating agent for the 1350 megawatt Craig Generating Station, located in northwestern Colorado. Tri-State has recently incorporated turbine steam path audits into their aggressive performance improvement program. The intent of the audits are to quantify and attain the most cost effective increase in turbine performance as a result of a major outage. Valuable information about performance losses in the turbine has been obtained from steam path audits conducted on the three Craig Units. However, accurate audit results often depend on the quality of measurements and the experience of the auditor. Without a second method to verify the results of a steam path audit, repairs might be performed on a non-cost effective basis, or significant performance degradations might be overlooked. In addition, an inaccurate audit may lead to erroneous expectations for performance improvements resulting from the maintenance performed during the outage.

  1. Designing Snakey: A Tangible User Interface Supporting Well Path Planning

    E-Print Network [OSTI]

    is a fundamental task present in different stages of oil/gas field development from early exploration to production intuitive manipulation and interaction with 3D curves, common to underground well path exploration, but rather to augment them with tangible and collaborative interaction, facilitating spatial exploration

  2. Production

    Broader source: Energy.gov [DOE]

    Algae production R&D focuses on exploring resource use and availability, algal biomass development and improvements, characterizing algal biomass components, and the ecology and engineering of...

  3. Rough Paths Theory Fabrice Baudoin

    E-Print Network [OSTI]

    2013-04-09T23:59:59.000Z

    set of lifted paths x? : [0,1] ? GN (Rd) with respect to the distance in p-variation ... as we will see, admits a canonical lift in ?p ..... esV etV = esV +tV = etV esV .

  4. Production

    Broader source: Energy.gov [DOE]

    Algae production R&D focuses on exploring resource use and availability, algal biomass development and improvements, characterizing algal biomass components, and the ecology and engineering of cultivation systems.

  5. THE PATH OF CARBON IN PHOTOSYNTHESIS

    E-Print Network [OSTI]

    Calvin, Melvin Nobel Prize lecture

    2008-01-01T23:59:59.000Z

    The Path ot Carbon in Photosynthesis. Science" l2J. , 476 (48 THE PATH OF CARBON IN PHOTOSYNTHESIS Melvin Calvin Nobel8-A Fig. 1. Elementary photosynthesis scheme. DES IOU OF THE

  6. Path to Self-Sustainability | Department of Energy

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

    Path to Self-Sustainability Path to Self-Sustainability Chapter 7: Path to Self-Sustainability More Documents & Publications Clean Energy Finance Guide for Residential and...

  7. The Role of Emerging Energy-Efficient Technology in Promoting Workplace Productivity and Health: Final Report

    E-Print Network [OSTI]

    Kumar, Satish; Fisk, William J.

    2002-01-01T23:59:59.000Z

    of an effect of IAQ on productivity, and this is stated. 26.Effects on Productivity. Proceedings of IAQ Ď96: Paths toEffects on Productivity. Proceedings of IAQ Ď96: Paths to

  8. The role of emerging energy-efficient technology in promoting workplace productivity and health: Final report

    E-Print Network [OSTI]

    Kumar, Satish; Fisk, William J.

    2002-01-01T23:59:59.000Z

    of an effect of IAQ on productivity, and this is stated. 26.Effects on Productivity. Proceedings of IAQ Ď96: Paths toEffects on Productivity. Proceedings of IAQ Ď96: Paths to

  9. Flight Path 60R - GEANIE

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Region service area. TheEPSCI HomeTours, Programs and2 This flight pathR60R

  10. Short-Term Energy Outlook April 2014

    U.S. Energy Information Administration (EIA) Indexed Site

    -0.5 0.0 0.5 1.0 1.5 2013 2014 2015 OPEC countries North America Russia and Caspian Sea Latin America North Sea Other Non-OPEC World Crude Oil and Liquid Fuels Production Growth...

  11. Steam Path Audits on Industrial Steam Turbines

    E-Print Network [OSTI]

    Mitchell, D. R.

    steam Path Audits on Industrial steam Turbines DOUGLAS R. MITCHELL. ENGINEER. ENCOTECH, INC., SCHENECTADY, NEW YORK ABSTRACT The electric utility industry has benefitted from steam path audits on steam turbines for several years. Benefits... not extend the turbine outage. To assure that all of the turbine audit data are available, the audit engineer must be at the turbine site the day the steam path is first exposed. A report of the opening audit findings is generated to describe the as...

  12. Path integral evaluation of Dbrane amplitudes

    E-Print Network [OSTI]

    Shyamoli Chaudhuri

    1999-07-24T23:59:59.000Z

    We extend Polchinski's evaluation of the measure for the one-loop closed string path integral to open string tree amplitudes with boundaries and crosscaps embedded in Dbranes. We explain how the nonabelian limit of near-coincident Dbranes emerges in the path integral formalism. We give a careful path integral derivation of the cylinder amplitude including the modulus dependence of the volume of the conformal Killing group.

  13. Generating functions for plateaus in Motzkin paths

    E-Print Network [OSTI]

    Drake, Dan

    2011-01-01T23:59:59.000Z

    A plateau in a Motzkin path is a sequence of three steps: an up step, a horizontal step, then a down step. We find three different forms for the bivariate generating function for plateaus in Motzkin paths, then generalize to longer plateaus. We conclude by describing a further generalization: a continued fraction form from which one can easily derive new multivariate generating functions for various kinds of path statistics. Several examples of generating functions are given using this technique.

  14. Optimization Online - On the shortest path game

    E-Print Network [OSTI]

    Andreas Darmann

    2014-06-17T23:59:59.000Z

    Jun 17, 2014 ... Abstract: In this work we address a game theoretic variant of the shortest path problem, in which two decision makers (agents/players) move†...

  15. Methodology for Augmenting Existing Paths with Additional Parallel Transects

    SciTech Connect (OSTI)

    Wilson, John E.

    2013-09-30T23:59:59.000Z

    Visual Sample Plan (VSP) is sample planning software that is used, among other purposes, to plan transect sampling paths to detect areas that were potentially used for munition training. This module was developed for application on a large site where existing roads and trails were to be used as primary sampling paths. Gap areas between these primary paths needed to found and covered with parallel transect paths. These gap areas represent areas on the site that are more than a specified distance from a primary path. These added parallel paths needed to optionally be connected together into a single pathóthe shortest path possible. The paths also needed to optionally be attached to existing primary paths, again with the shortest possible path. Finally, the process must be repeatable and predictable so that the same inputs (primary paths, specified distance, and path options) will result in the same set of new paths every time. This methodology was developed to meet those specifications.

  16. Targeted Path Profiling: Lower Overhead Path Profiling for Staged Dynamic Optimization Systems

    E-Print Network [OSTI]

    Bashir, Rashid

    , their technique leaves a sizable fraction of paths unaccounted for. While a number of techniques have been

  17. World-line instantons and the Schwinger effect as a WKB exact path integral

    E-Print Network [OSTI]

    James Gordon; Gordon W. Semenoff

    2014-07-03T23:59:59.000Z

    A detailed study of the semiclassical expansion of the world line path integral for a charged relativistic particle in a constant external electric field is presented. We show that the Schwinger formula for charged particle pair production is reproduced exactly by the semiclassical expansion around classical instanton solutions when the leading order of fluctuations is taken into account. We prove that all corrections to this leading approximation vanish and that the WKB approximation to the world line path integral is exact.

  18. ON LANDSCAPE FUNCTIONS ASSOCIATED WITH TRANSPORT PATHS

    E-Print Network [OSTI]

    Xia, Qinglan

    ON LANDSCAPE FUNCTIONS ASSOCIATED WITH TRANSPORT PATHS QINGLAN XIA Abstract. In this paper, we by Santambrogio in [10]. More precisely, we study landscape functions associated with a transport path be- tween for nonpositive p. We show an equivalence relation be- tween landscape functions associated with an -transport

  19. Evaluation of Calcine Disposition Path Forward

    SciTech Connect (OSTI)

    Birrer, S.A.; Heiser, M.B.

    2003-02-26T23:59:59.000Z

    This document describes an evaluation of the baseline and two alternative disposition paths for the final disposition of the calcine wastes stored at the Idaho Nuclear Technology and Engineering Center at the Idaho National Engineering and Environmental Laboratory. The pathways are evaluated against a prescribed set of criteria and a recommendation is made for the path forward.

  20. Evaluation of Calcine Disposition - Path Forward

    SciTech Connect (OSTI)

    Steve Birrer

    2003-02-01T23:59:59.000Z

    This document describes an evaluation of the baseline and two alternative disposition paths for the final disposition of the calcine wastes stored at the Idaho Nuclear Technology and Engineering Center at the Idaho National Engineering and Environmental Laboratory. The pathways are evaluated against a prescribed set of criteria and a recommendation is made for the path forward.

  1. A Path to Collaborative Strategic Learning

    SciTech Connect (OSTI)

    Nancy M. Carlson

    2003-10-01T23:59:59.000Z

    Collaborative learning is critical for the future of any organization and must align with the strategic organizational processes that result in products valued by others. To discover these processes, proposal preparation is explored using topic-oriented ethnography, grounded theory, and an innovative addition to qualitative interviewing, called metainquiry. Using interview data from editors, graphic artists, text processors, scientists, engineers, and technical managers, substantive theory emerges. The research discovers the five essential processes of owning, visioning, reviewing, producing, and contributing needed for organizational strategic learning to occur. The dimensions of these processes are made explicit and can be used to gauge the health of any organization. The substantive theory also provides insight into the ability of collaborative learning to evolve, flourish, and adapt to the strategic advantage of the organization. Lastly, actionable goals with ten essential elements emerge that link owning, visioning, reviewing, producing, and contributing as a path for all organizations to follow to promote collaborative learning communities and enhance their competitive advantage.

  2. NGNP Program 2013 Status and Path Forward

    SciTech Connect (OSTI)

    Hans Gougar

    2014-03-01T23:59:59.000Z

    High temperature gas-cooled reactor (HTGR) technology can play an important role in the energy future of the United States by extending the use of nuclear energy for non-electricity energy production missions, as well as continuing to provide a considerable base load electric power generation capability. Extending nuclear energy into the industrial and transportation sectors through the coproduction of process heat and electricity provides safe, reliable energy for these sectors in an environmentally responsible manner. The modular HTGR provides a substantial improvement in nuclear plant safety for the protection of the public and the environment, and supports collocation of the HTGRhigh temperature gas-cooled reactor with major industrial facilities. Under U.S. Department of Energy direction since 2006, the Next Generation Nuclear Plant Project at Idaho National Laboratory has been working toward commercializing the HTGR technology. However, a recent decision by the Secretary of Energy to reduce the scope of the Next Generation Nuclear Plant Project to a research and development program, considerable realignment has taken place. This report: (1) summarizes the accomplishments of the Next Generation Nuclear Plant Program from FY2011 through FY2013; (2) lays out the path forward necessary to achieve the ultimate objective of commercializing HTGR technology; and (3) discusses ongoing technical, licensing, and evaluation activities under the realigned Next Generation Nuclear Plant program considered important to preserve the significant investment made by the government to-date and to maintain some progress in meeting the objectives of the Energy Policy Act of 2005 (EPAct2005).

  3. Compiling Path Expressions into VLSI Circuits `I`. S. Annntharaman

    E-Print Network [OSTI]

    Clarke, Edmund M.

    -timed. Ncvcrthdcss. UK circuits produced by our construction have area propordonal to N slog(N) whcrc N is the total expression: path R, + Wend, path R, + Wend. `fhc first path cxprcssion prohibits a read operation

  4. Inquiry-based learning templates for creating online educational paths

    E-Print Network [OSTI]

    Davis, Sarah Alice

    2006-10-30T23:59:59.000Z

    experience collected during a comparative study where users created Inquiry-based paths using the current Walden?s Paths? system or the template-based authoring tool. 4 2. RELATED WORK Education-oriented template-based path authoring...

  5. Multi-Path Transportation Futures Study - Lessons for the Transportati...

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

    Multi-Path Transportation Futures Study - Lessons for the Transportation Energy Futures Study Multi-Path Transportation Futures Study - Lessons for the Transportation Energy...

  6. Transition Path Sampling of Water Exchange Rates and Mechanisms...

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

    Path Sampling of Water Exchange Rates and Mechanisms around Aqueous Ions . Transition Path Sampling of Water Exchange Rates and Mechanisms around Aqueous Ions . Abstract: The rates...

  7. The Path of the Blind Watchmaker: A Model of Evolution

    E-Print Network [OSTI]

    Poggio, Andrew Anthony

    2011-01-01T23:59:59.000Z

    path of the blind watchmaker. This thesis presents a novelBlind WatchMaker Path (BWMPath) BWMPath contains the bulk of the software written for this thesis,

  8. Non-classical paths in interference experiments

    E-Print Network [OSTI]

    Rahul Sawant; Joseph Samuel; Aninda Sinha; Supurna Sinha; Urbasi Sinha

    2014-08-09T23:59:59.000Z

    In a double slit interference experiment, the wave function at the screen with both slits open is not exactly equal to the sum of the wave functions with the slits individually open one at a time. The three scenarios represent three different boundary conditions and as such, the superposition principle should not be applicable. However, most well known text books in quantum mechanics implicitly and/or explicitly use this assumption which is only approximately true. In our present study, we have used the Feynman path integral formalism to quantify contributions from non-classical paths in quantum interference experiments which provide a measurable deviation from a naive application of the superposition principle. A direct experimental demonstration for the existence of these non-classical paths is hard. We find that contributions from such paths can be significant and we propose simple three-slit interference experiments to directly confirm their existence.

  9. SPEEDING UP DYNAMIC SHORTEST PATH ALGORITHMS Finding ...

    E-Print Network [OSTI]

    2003-09-19T23:59:59.000Z

    Sep 19, 2003 ... ... and Reps algorithm for updating a shortest path tree, which is a revision of ... tree, although it can be easily specialized for updating a tree [5].

  10. Multi-objective stochastic path planning

    E-Print Network [OSTI]

    Dasgupta, Sumantra

    2009-05-15T23:59:59.000Z

    of multiple objectives and stochastic edge parameters. 2. Identify candidate constraints where clustering based multi-level programming can be applied to eliminate infeasible edges. 3. Provide an exact O (V.E) algorithm for building redundant shortest paths. 4...

  11. Asymptotic properties of path integral ideals

    SciTech Connect (OSTI)

    Bogojevic, A.; Balaz, A.; Belic, A. [Institute of Physics, P.O. Box 57, 11001 Belgrade (Serbia and Montenegro)

    2005-09-01T23:59:59.000Z

    We introduce and analyze an interesting quantity, the path integral ideal, governing the flow of generic discrete theories to the continuum limit and greatly increasing their convergence. The said flow is classified according to the degree of divergence of the potential at spatial infinity. Studying the asymptotic behavior of path integral ideals we isolate the dominant terms in the effective potential that determine the behavior of a generic theory for large discrete time steps.

  12. The calculation of ionospheric ray paths

    E-Print Network [OSTI]

    Koehler, Buford Ray

    1967-01-01T23:59:59.000Z

    Parabolic ionospheric layer of electrons, altitude versus electron density Page 1- 2 Sample ray paths with constant angle of propagation and increasing frequency, parabolic ionosphere of electrons assumed, earth's magnetic field neglected 1- 3 Sample... ray paths with constant frequency and variable angle of propagation and range, parabolic ionosphere of electrons assumed, earth's magnetic field neglected 2- 1 The vertical and lateral deviations of a radio wave propagated in a plane ionosphere...

  13. Graphene-based battery electrodes having continuous flow paths

    SciTech Connect (OSTI)

    Zhang, Jiguang; Xiao, Jie; Liu, Jun; Xu, Wu; Li, Xiaolin; Wang, Deyu

    2014-05-24T23:59:59.000Z

    Some batteries can exhibit greatly improved performance by utilizing electrodes having randomly arranged graphene nanosheets forming a network of channels defining continuous flow paths through the electrode. The network of channels can provide a diffusion pathway for the liquid electrolyte and/or for reactant gases. Metal-air batteries can benefit from such electrodes. In particular Li-air batteries show extremely high capacities, wherein the network of channels allow oxygen to diffuse through the electrode and mesopores in the electrode can store discharge products.

  14. Mach flow angularity probes for scramjet engine flow path diagnostics

    SciTech Connect (OSTI)

    Jalbert, P.A.; Hiers, R.S. Jr. [Sverdrup Technology, Inc., Arnold AFS, TN (United States)

    1993-12-31T23:59:59.000Z

    Mach-flow angularity (MFA) probes were developed for use in scramjet flow path probe rakes. Prototype probes were fabricated to demonstrate the assembly processes (numerical control machining, furnace brazing, and electron beam welding). Tests of prototype probes confirmed the thermal durability margins and life cycle. Selected probes were calibrated in air at Mach numbers from 1.75 to 6.0. Acceptance criteria for the production probes stressed thermal durability and pressure (and, consequently, Mach number) measurement quality. This new water-cooled MFA probe has 0.397-cm shaft diameter and is capable of withstanding heat fluxes of 2.724 kW/sq cm.

  15. Sparse Geodesic Paths Mark A. Davenport and Richard G. Baraniuk

    E-Print Network [OSTI]

    Sparse Geodesic Paths Mark A. Davenport and Richard G. Baraniuk Department of Electrical of the sparse geodesic path between two points, by which we mean the shortest path between the points geodesic path can be easily generated. The distance provides a natural similarity measure that can be ex

  16. Model Discrepancy in the Saturated Path Hydrology Model: Initial Analysis

    E-Print Network [OSTI]

    Oakley, Jeremy

    Model Discrepancy in the Saturated Path Hydrology Model: Initial Analysis Tom Fricker University discrepancy in the Saturated Path Hydrology Model (logSPM, Kuczera et al., 2006). The purpose). 1 #12;3 The Saturated Path Hydrology Model We consider the Saturated Path Hydrology Model (log

  17. Maximizing Crosstalk-Induced Slowdown During Path Delay Test

    E-Print Network [OSTI]

    Gope, Dibakar

    2012-10-19T23:59:59.000Z

    in path delay for c5315 .................................................................... 57 Figure 11 Increase in path delay for c2670 .................................................................... 60 Figure 12 Increase in path delay for c... for critical paths considering single aggressor crosstalk effect with due consideration to the timing alignment and direction. This method has similar CPU efficiency to that of [17] and [18]. However, they did not take into account the possible impact...

  18. PATHS: Analysis of PATH Duration Statistics and their Impact on Reactive MANET Routing Protocols

    E-Print Network [OSTI]

    Krishnamachari, Bhaskar

    PATHS: Analysis of PATH Duration Statistics and their Impact on Reactive MANET Routing Protocols Department of Electrical Engineering University of Southern California {narayans,fbai,bkrishna,helmy}@usc.edu ABSTRACT We develop a detailed approach to study how mobility im- pacts the performance of reactive MANET

  19. A Continuous-State Version of Discrete Randomized Shortest-Paths, with Application to Path Planning

    E-Print Network [OSTI]

    Del Moral , Pierre

    . It is shown that the continuous-state counterpart requires the solution of two partial differential equations, namely the backward variable. These partial differential equations are the so- called steady-state Bloch entropy [23]. The introduced path randomization allows balancing the load (number of packages) per path

  20. Metabolic paths in world economy and crude oil price

    E-Print Network [OSTI]

    Picciolo, Francesco; Ruzzenenti, Franco

    2015-01-01T23:59:59.000Z

    In 1983 Hamilton demonstrated the correlation between the price of oil and gross national product for the U.S. economy. A prolific literature followed exploring the potential correlation of oil prices with other important indices like inflation, industrial production, and food prices, using increasingly refined tools. Our work sheds new light on the role of oil prices in shaping the world economy by investigating the metabolic paths of value across trade between 1960 and 2010, by means of Markov Chain analysis. We show that the interdependence of countries' economies are strictly (anti)correlated to the price of oil. We observed a remarkably high correlation of 0.85, unmatched by any former study addressing the correlation between oil price and major economic indicators.

  1. Electronic quantum effects mapped onto non-Born-Oppenheimer nuclear paths: Nonclassical surmounting over potential barriers and trapping above the transition states due to nonadiabatic path-branching

    SciTech Connect (OSTI)

    Yamamoto, Kentaro, E-mail: kyamamoto@mns2.c.u-tokyo.ac.jp; Takatsuka, Kazuo, E-mail: kaztak@mns2.c.u-tokyo.ac.jp [Department of Basic Science, The University of Tokyo, Komaba, 153-8902 Tokyo (Japan)] [Department of Basic Science, The University of Tokyo, Komaba, 153-8902 Tokyo (Japan)

    2014-03-28T23:59:59.000Z

    We develop the path-branching representation for nonadiabatic electron wavepacket dynamics [T. Yonehara and K. Takatsuka, J. Chem. Phys. 132, 244102 (2010)] so as to treat dynamics in an energy range comparable to the barrier height of adiabatic potential energy curves. With this representation two characteristic chemical reaction dynamics are studied, in which an incident nuclear wavepacket encounters a potential barrier, on top of which lies another nonadiabatically coupled adiabatic potential curve: (1) Dynamics of initial paths coming into the nonadiabatic interaction region with energy lower than the barrier height. They branch into two pieces (and repeat branching subsequently), the upper counterparts of which can penetrate into a classically inaccessible high energy region and eventually branch back to the product region on the ground state curve. This is so to say surmounting the potential barrier via nonadiabatically coupled excited state, and phenomenologically looks like the so-called deep tunneling. (2) Dynamics of classical paths whose initial energies are a little higher than the barrier but may be lower than the bottom of the excited state. They can undergo branching and some of those components are trapped on top of the potential barrier, being followed by the population decay down to the lower state flowing both to product and reactant sites. Such expectations arising from the path-branching representation are numerically confirmed with full quantum mechanical wavepacket dynamics. This phenomenon may be experimentally observed as time-delayed pulses of wavepacket trains.

  2. employment opportunities in exciting career paths

    E-Print Network [OSTI]

    Barthelat, Francois

    in the complex and increasingly sophisticated food supply system. Food Industry Public Service Technical Sales in exciting career paths Food Science Cerificate for BSc graduates Food Science Cerificate for BSc graduates. Because food science is a multidisciplinary applied science, a food science education provides a broad

  3. Current SPE Hydrodynamic Modeling and Path Forward

    SciTech Connect (OSTI)

    Knight, Earl E. [Los Alamos National Laboratory; Rougier, Esteban [Los Alamos National Laboratory

    2012-08-14T23:59:59.000Z

    Extensive work has been conducted on SPE analysis efforts: Fault effects Non-uniform weathered layer analysis MUNROU: material library incorporation, parallelization, and development of non-locking tets Development of a unique continuum-based-visco-plastic strain-rate-dependent material model With corrected SPE data path is now set for a multipronged approach to fully understand experimental series shot effects.

  4. Path Analysis Models of an Autonomous Agent

    E-Print Network [OSTI]

    Path Analysis Models of an Autonomous Agent in a Complex Environment Paul R. Cohen, David M. Hart AFOSR-91-0067. #12;1 Phoenix Phoenix is a simulated environment populated by autonomous agents) the e orts of all, a reboss. Fires burn in unpredictable ways due to wind speed and direction, terrain

  5. Nicaragua 2010 Visit to Path Nicaragua Office

    E-Print Network [OSTI]

    Anderson, Richard

    communication ­ Initial implementation SMS messages using GSM · Rural clinic with vaccine storage ­ Temperature management / forecasting tool · Initial development at Path · Revision by external software company · Ongoing but functional and rational" 1/19/2010 23Nicaragua 2010 Cell Phone Coverage · Two companies ­ Claro ­ Movistar

  6. Folded-path optical analysis gas cell

    DOE Patents [OSTI]

    Carangelo, R.M.; Wright, D.D.

    1995-08-08T23:59:59.000Z

    A folded-path gas cell employs an elliptical concave mirror in confronting relationship to two substantially spherical concave mirrors. At least one of the spherical mirrors, and usually both, are formed with an added cylindrical component to increase orthogonal foci coincidence and thereby to increase the radiation energy throughput characteristic of the cell. 10 figs.

  7. Folded-path optical analysis gas cell

    DOE Patents [OSTI]

    Carangelo, Robert M. (Glastonbury, CT); Wright, David D. (Vershire, VT)

    1995-01-01T23:59:59.000Z

    A folded-path gas cell employs an elliptical concave mirror in confronting relationship to two substantially spherical concave mirrors. At least one of the spherical mirrors, and usually both, are formed with an added cylindrical component to increase orthogonal focii coincidence and thereby to increase the radiation energy throughput characteristic of the cell.

  8. FESAC Fusion Development Path Rob Goldston

    E-Print Network [OSTI]

    Exploration/Proof of Principle IFE IREs MFE PE Exp'ts Engineering Science/ Technology Development ComponentFESAC Fusion Development Path Rob Goldston Graduate Student Seminar March 21, 2005 #12;Panel Power Associates · Robert Goldston (Chair), Princeton Plasma Physics Laboratory · Amanda Hubbard, MIT

  9. The Use of Path Integral Ideals: Deriving the Euler Summation Formula for Path Integrals

    SciTech Connect (OSTI)

    Bogojevic, Aleksandar; Balaz, Antun; Belic, Aleksandar [Institute of Physics, P. O. Box 57, 11001 Belgrade (Serbia and Montenegro)

    2006-03-29T23:59:59.000Z

    We present and comment on a new quantity that we have recently introduced: the path integral ideal. The new quantity governs the flow of a discrete quantum theory to its continuum limit. Path integral ideals satisfy a unique integral equation - the distinction between different quantum theories being in the boundary conditions. An asymptotic expansion of this equation has led to the derivation of a generalization of Euler's summation formula for path integrals. The new analytical method has brought about a systematic improvement of the convergence of path integrals. Applied to numerical procedures, the new analytical input has resulted in the speedup of numerical simulations by many orders of magnitude. On the analytical side, the integral equation for ideals may turn out to be a useful setting for extending the obtained results to a wider setting - e.g. to p-adic valued theories and theories on non-commuting space-times.

  10. The Path a Proton Takes Through a Fuel Cell Membrane

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

    Path a Proton Takes Through a Fuel Cell Membrane The Path a Proton Takes Through a Fuel Cell Membrane October 11, 2012 | Tags: Basic Energy Sciences (BES), Chemistry, Franklin,...

  11. What's Next for Nuclear Energy? MIT Students Discuss Path Forward...

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

    What's Next for Nuclear Energy? MIT Students Discuss Path Forward What's Next for Nuclear Energy? MIT Students Discuss Path Forward June 19, 2012 - 10:41am Addthis Dr. Peter Lyons,...

  12. EECBG Success Story: Atlanta Suburb Greases the Path to Savings...

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

    Atlanta Suburb Greases the Path to Savings with Biodiesel EECBG Success Story: Atlanta Suburb Greases the Path to Savings with Biodiesel December 7, 2011 - 3:33pm Addthis Downtown...

  13. An Optimal Path Model for the Risk-Averse Traveler

    E-Print Network [OSTI]

    Leilei Zhang

    2014-06-11T23:59:59.000Z

    Jun 11, 2014 ... The model is suitable for a risk-averse traveler, who prefers a path with ... Citation

  14. Systematically Accelerated Convergence of Path Integrals

    SciTech Connect (OSTI)

    Bogojevic, A.; Balaz, A.; Belic, A. [Institute of Physics, P.O. Box 57, 11001 Belgrade (Serbia and Montenegro)

    2005-05-13T23:59:59.000Z

    We present a new analytical method that systematically improves the convergence of path integrals of a generic N-fold discretized theory. Using it we calculate the effective actions S{sup (p)} for p{<=}9, which lead to the same continuum amplitudes as the starting action, but that converge to that continuum limit as 1/N{sup p}. We checked this derived speedup in convergence by performing Monte Carlo simulations on several different models.

  15. Free Energy Changes, Fluctuations, and Path Probabilities

    E-Print Network [OSTI]

    William G. Hoover; Carol G. Hoover

    2011-04-20T23:59:59.000Z

    We illustrate some of the static and dynamic relations discovered by Cohen, Crooks, Evans, Jarzynski, Kirkwood, Morriss, Searles, and Zwanzig. These relations link nonequilibrium processes to equilibrium isothermal free energy changes and to dynamical path probabilities. We include ideas suggested by Dellago, Geissler, Oberhofer, and Schoell-Paschinger. Our treatment is intended to be pedagogical, for use in an updated version of our book: Time Reversibility, Computer Simulation, and Chaos. Comments are very welcome.

  16. Your path to a career in Health Care Professions

    E-Print Network [OSTI]

    Howat, Ian M.

    Your path to a career in Health Care Professions #12;H ealth care professionals have successful careers in a variety of areas. They may work in health care administration, provide patient care, or sell is not the only path to a career in health care. In the following pages, you will find that there are many paths

  17. Robot Path Planning in Uncertain Environments: A Language-Measure-

    E-Print Network [OSTI]

    Ray, Asok

    Robot Path Planning in Uncertain Environments: A Language-Measure- Theoretic Approach Devesh K. Jha the problem of goal-directed robot path planning in the presence of uncertainties that are induced by bounded, probabilistic finite state automata 1 Motivation and Introduction In general, path planning of robots (e

  18. Landmark-based Geodesic Computation for Heuristically Driven Path Planning

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Landmark-based Geodesic Computation for Heuristically Driven Path Planning Gabriel Peyr¬īe CMAP, UMR the geodesic path between two points on the surface, compution is needed on a large part of the surface when geodesic paths on images and 3D meshes. We use a heuris- tic to drive the front propagation procedure

  19. Visual servoing for path reaching with nonholonomic robots Journal: Robotica

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Visual servoing for path reaching with nonholonomic robots Journal: Robotica Manuscript ID: ROB these files (e.g. movies) online. VisionBasedPathReaching-Robotica.tex figure.tar.gz VisionBasedPathReaching.mp4 Proof for review onlyhal-00639659,version1-9Nov2011 Author manuscript, published in "Robotica 29

  20. Efficient Path Delay Test Generation with Boolean Satisfiability

    E-Print Network [OSTI]

    Bian, Kun

    2013-12-10T23:59:59.000Z

    delay test generator CodGen. A mixed structural-functional approach was implemented in CodGen where longest paths were detected using the K Longest Path Per Gate (KLPG) algorithm and path justification and dynamic compaction were handled with the SAT...

  1. Analyis of Path Profiling Information Generated with Performance Monitoring Hardware

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    is to exploit hardware Performance Monitoring Units (PMUs) present in modern microprocessors. The Itanium-2 PMU can be correlated into full paths. As sta- tistically hot paths are most likely to occur in PMU sam techniques carry a high overhead, a PMU-based path profiler represents an ef- fective lightweight profiling

  2. A global perspective on energy markets and economic integration.

    SciTech Connect (OSTI)

    Baker, Arnold Barry

    2006-04-01T23:59:59.000Z

    What will be the effect of Iraqi domestic instability on Iraqi oil production Negotiations for Iranian nuclear technology on Iranian oil supplies Saudi commitment to expanded oil production President Putin's policies on Russian oil and natural gas supplies President Chavez's policies on Venezuelan oil supplies Instability in Nigeria Higher oil prices on world economic growth Effect of economic growth on oil demand in China, India, U.S., etc. Higher oil prices on non-OPEC oil supplies

  3. Radial Inflow Gas Turbine Flow Path Design

    E-Print Network [OSTI]

    Samip Shah; Gaurang Chaudhri; Digvijay Kulshreshtha; S. A. Channiwalla

    Abstract:- A new method for radial inflow gas turbine flow paths design based on a unique integrated conceptual design environment AxSTREAM is presented in this paper. This integrated environment is a seamless and swift processing scheme that incorporates stages aerodynamic analysis and preliminary design/sizing based on the one dimensional method. The environment makes possible to find number of different designs with inverse task solver, basing on initially specified boundary conditions, closing conditions and design variables. Design space explorer provides easy and visual comparison for range of obtained design in customizable coordinate axes. Solution filtering on different parameters, such as meridional and axial dimensions, maximal blades weight, saving the time to choose from thousands obtained solutions the only one right design. Flexibility of presented approach allows to built-up complete gas turbine flow path from consequence of individual elements: stationary and rotating elements, ducts, heat exchangers, and analyze it in common environment. Complete control of all aspects of aerodynamic flow path quality, structural reliability, and integral performances on design and offdesign conditions is performing throughout all design process. This gives full interaction between user and system for immediate correction and enhancement of current design data using various optimization capabilities to feel the impact of changes on each design step. Integrated system AxSTREAM significantly shortening the design cycle time from initial machine concept to finalized design with all offdesign performances details. The design process is demonstrated for a 25kW radial inflow gas turbine. Keywords:- Radial Inflow Turbine, Performance Maps, AxSTREAM I.

  4. The Path to Magnetic Fusion Energy

    SciTech Connect (OSTI)

    Prager, Stewart (PPPL) [PPPL

    2011-05-04T23:59:59.000Z

    When the possibility of fusion as an energy source for electricity generation was realized in the 1950s, understanding of the plasma state was primitive. The fusion goal has been paced by, and has stimulated, the development of plasma physics. Our understanding of complex, nonlinear processes in plasmas is now mature. We can routinely produce and manipulate 100 million degree plasmas with remarkable finesse, and we can identify a path to commercial fusion power. The international experiment, ITER, will create a burning (self-sustained) plasma and produce 500 MW of thermal fusion power. This talk will summarize the progress in fusion research to date, and the remaining steps to fusion power.

  5. PathSci | Princeton Plasma Physics Lab

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006 TheSteven AshbyDepartment ofGE's E. TrifonPatentsPathSci The

  6. The path a proton takes | EMSL

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layered NbS2 andThe MolecularPlaceTheofThe Houseformation.The path

  7. Flight Path 15L - Chi-Nu

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Region service area. TheEPSCI HomeTours, Programs and2 This flight path is4L

  8. Flight Path 30L - ICE House

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Region service area. TheEPSCI HomeTours, Programs and2 This flight path

  9. Flight Path 30R | ICE II

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Region service area. TheEPSCI HomeTours, Programs and2 This flight pathR The

  10. EnerPath | 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 Home5b9fcbce19 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6 No revisionWind,Soils andOpen EnergyBangladeshEneEnerPath

  11. ClearPath | 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 Home5b9fcbce19 NoPublic Utilities Address: 160Benin:EnergyWisconsin: Energy Resources JumpSouthSolarClearPath Jump to: navigation,

  12. PathScale Compliers at NERSC

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar Home Design Passive Solar Home Design June 24, 2013 -Past PathScale UPC

  13. Businesses Mobilize Production through Markets: Parametric Modeling of

    E-Print Network [OSTI]

    White, Douglas R.

    Businesses Mobilize Production through Markets: Parametric Modeling of Path-dependent Outcomes; Revised September 3, 2002; Accepted September 3, 2002 Business is modeled as interlocking social constructions that emerge in mobilizing differentiated production flows amidst uncertainty. The model

  14. DOE EM Landfill Workshop and Path Forward - July 2009

    Office of Environmental Management (EM)

    SSAB Teleconference: 2. DOE EM Landfill Workshop & Path Forward Office of Groundwater and Soil Remediation US Department of Energy July 2009 Slides prepared by CRESP DOE EM...

  15. Solution Methods for the Multi-trip Elementary Shortest Path ...

    E-Print Network [OSTI]

    2011-03-15T23:59:59.000Z

    builds partial paths, it assigns a label to each, indicating the resource .... node are used to update the elapsed time and the vehicle load (resources consumed),.

  16. Navigating Roadblocks on the Path to Advanced Biofuels Deployment

    Broader source: Energy.gov [DOE]

    Breakout Session 2: Frontiers and Horizons Session 2ĖC: Navigating Roadblocks on the Path to Advanced Biofuels Deployment Andrew Held, Senior Director of Feedstock Development, Virent, Inc.

  17. Graph Coarsening for Path Finding in Cybersecurity Graphs

    SciTech Connect (OSTI)

    Hogan, Emilie A.; Johnson, John R.; Halappanavar, Mahantesh

    2013-01-01T23:59:59.000Z

    n the pass-the-hash attack, hackers repeatedly steal password hashes and move through a computer network with the goal of reaching a computer with high level administrative privileges. In this paper we apply graph coarsening in network graphs for the purpose of detecting hackers using this attack or assessing the risk level of the network's current state. We repeatedly take graph minors, which preserve the existence of paths in the graph, and take powers of the adjacency matrix to count the paths. This allows us to detect the existence of paths as well as find paths that have high risk of being used by adversaries.

  18. UAV/UAS path planning for ice management information gathering.

    E-Print Network [OSTI]

    Stalmakou, Artsiom

    2011-01-01T23:59:59.000Z

    ??The key objective of this work is the proposition of the path planning strategy for unmanned aerial vehicle (UAV) intended for information gathering in ArcticÖ (more)

  19. The Path to Program Sustainability | Department of Energy

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

    The Path to Program Sustainability The strategies outlined below help create self-sustaining clean energy finance programs. Prove Energy Efficiency Finance as a Profitable...

  20. Construction of vertex-disjoint paths in alternating group networks

    E-Print Network [OSTI]

    Zhou, Shuming; Xiao, Wenjun; Parhami, Behrooz

    2010-01-01T23:59:59.000Z

    misplaced symbols are Construction of vertex-disjoint paths32845671 ? 23145678 ? e Construction of vertex-disjoint2164537 ? e ? 2314567 ? e Construction of vertex-disjoint

  1. Distributional properties of stochastic shortest paths for smuggled nuclear material

    SciTech Connect (OSTI)

    Cuellar, Leticia [Los Alamos National Laboratory; Pan, Feng [Los Alamos National Laboratory; Roach, Fred [Los Alamos National Laboratory; Saeger, Kevin J [Los Alamos National Laboratory

    2011-01-05T23:59:59.000Z

    The shortest path problem on a network with fixed weights is a well studied problem with applications to many diverse areas such as transportation and telecommunications. We are particularly interested in the scenario where a nuclear material smuggler tries to succesfully reach herlhis target by identifying the most likely path to the target. The identification of the path relies on reliabilities (weights) associated with each link and node in a multi-modal transportation network. In order to account for the adversary's uncertainty and to perform sensitivity analysis we introduce random reliabilities. We perform some controlled experiments on the grid and present the distributional properties of the resulting stochastic shortest paths.

  2. Hot gas path component cooling system

    DOE Patents [OSTI]

    Lacy, Benjamin Paul; Bunker, Ronald Scott; Itzel, Gary Michael

    2014-02-18T23:59:59.000Z

    A cooling system for a hot gas path component is disclosed. The cooling system may include a component layer and a cover layer. The component layer may include a first inner surface and a second outer surface. The second outer surface may define a plurality of channels. The component layer may further define a plurality of passages extending generally between the first inner surface and the second outer surface. Each of the plurality of channels may be fluidly connected to at least one of the plurality of passages. The cover layer may be situated adjacent the second outer surface of the component layer. The plurality of passages may be configured to flow a cooling medium to the plurality of channels and provide impingement cooling to the cover layer. The plurality of channels may be configured to flow cooling medium therethrough, cooling the cover layer.

  3. Steam turbine path evaluation during maintenance

    SciTech Connect (OSTI)

    Kubiak, J.; Angel, F. del; Carnero, A.; Campos, A. [Instituto de Investigaciones Electricas, Temixo, Morelos (Mexico)] [and others

    1996-07-01T23:59:59.000Z

    The deterioration of a turbine (Steam & Gas) flow path affects the efficiency of the turbine. The most critical factors which affect the efficiency of turbines are: wearing out of the trailing edges of the blades by solid particle erosion, deposits, material loss due to corrosion (also sand blast) which increases the flow area, increases in blade surface roughness, etc. Wearing out of the seals caused by shaft vibrations or rapid start-up leads to significant leakage losses. Some of these effects can be estimated with some precision during operation of the turbine, but an exact evaluation can be carried out during a maintenance applying a special fluid flow analysis program. Such a program has been developed and then adapted to achieve this goal. During maintenance the complete geometry of the steam path is measured (blades lengths, widths, angles, clearances, etc.) in the condition encountered before any corrections. Then the similar measurement is undertaken after, for example, clearance corrections, blade replacements, cleaning of the blades, etc. Using the program first of all the design data is calculated. Then the actual data is fed into the program and compared to the design data. Thus the effect of the blade surface roughness, increased seal clearances, flow area increase, solid particle damage to the trailing edge and so on for each particular stage is calculated. The effect is expressed in [kW] as a deviation from the design points. This data can be helpful during online evaluation of the turbine performance. This evaluation helps the management of the plant in undertaking the correct decision concerning the date of the next major maintenance and replacement part procurement. Many turbines in the Mexican utility have been evaluated in such a manner. Some examples are presented.

  4. E-Print Network 3.0 - alcohol fuel production Sample Search Results

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

    using Electron Microscopy Summary: and better production paths. One of these is using biogas to create alcohol as a fuel. Higher... Characterization of Catalysts for Synthesis of...

  5. Hanford spent nuclear fuel project recommended path forward, volume III: Alternatives and path forward evaluation supporting documentation

    SciTech Connect (OSTI)

    Fulton, J.C.

    1994-10-01T23:59:59.000Z

    Volume I of the Hanford Spent Nuclear Fuel Project - Recommended Path Forward constitutes an aggressive series of projects to construct and operate systems and facilities to safely retrieve, package, transport, process, and store K Basins fuel and sludge. Volume II provided a comparative evaluation of four Alternatives for the Path Forward and an evaluation for the Recommended Path Forward. Although Volume II contained extensive appendices, six supporting documents have been compiled in Volume III to provide additional background for Volume II.

  6. Final Report - Dynamic Path Scheduling through Extensions to Generalized Multiprotocol Label Switching (GMPLS)

    SciTech Connect (OSTI)

    Principal Investigator: Dr. Abdella Battou

    2009-05-22T23:59:59.000Z

    The major accomplishments of the project are the successful software implementation of the Phase I scheduling algorithms for GMPLS Label Switched Paths (LSPs) and the extension of the IETF Path Computation Element (PCE) Protocol to support scheduling extensions. In performing this work, we have demonstrated the theoretical work of Phase I, analyzed key issues, and made relevant extensions. Regarding the software implementation, we developed a proof of concept prototype as part of our Algorithm Evaluation System (AES). This implementation uses the Linux operating system to provide software portability and will be the foundation for our commercial software. To demonstrate proof of concept, we have implemented LSP scheduling algorithms to support two of the key GMPLS switching technologies (Lambda and Packet) and support both Fixed Path (FP) and Switched Path (SP) routing. We chose Lambda and Packet because we felt it was essential to include both circuit and packet switching technologies as well as to address all-optical switching in the study. As conceptualized in Phase I, the FP algorithms use a traditional approach where the LSP uses the same physical path for the entire service duration while the innovative SP algorithms allow the physical path to vary during the service duration. As part of this study, we have used the AES to conduct a performance analysis using metro size networks (up to 32 nodes) that showed that these algorithms are suitable for commercial implementation. Our results showed that the CPU time required to compute an LSP schedule was small compared to expected inter-arrival time between LSP requests. Also, when the network size increased from 7 to 15 to 32 nodes with 10, 26, and 56 TE links, the CPU processing time showed excellent scaling properties. When Fixed Path and Switched Path routing were compared, SP provided only modestly better performance with respect to LSP completion rate, service duration, path length, and start time deviation. In addition, the SP routing required somewhat more CPU time than the FP routing. However, when the allowable range for the start time is increased, the CPU time for SP increased less rapidly than FP such that the CPU processing times became comparable. Therefore, SP routing may scale better than FP routing. The Path Computation Element Working Group is a complementary working group to the GMPLS working group (CCAMP) in the IETF and is developing standards to discover, manage, and access elements that compute routes for GMPLS for LSPs. The algorithms used to compute the routes are not subject to standardization. Since the PCE supports only standard GMPLS LSPs, it does not support scheduled LSPs. Therefore, it is a natural extension of our Phase I work to introduce this enhancement into the PCE. In addition, the PCE adds another dimension to our product line because the PCE by itself may be a product with a standard interface.

  7. China Energy and Emissions Paths to 2030

    E-Print Network [OSTI]

    Fridley, David

    2012-01-01T23:59:59.000Z

    world best practice energy intensity (weighted by current productionworldís best practice energy intensity in all major industrial productionenergy intensity for ammonia production lags behind the world

  8. China Energy and Emissions Paths to 2030

    E-Print Network [OSTI]

    Fridley, David

    2012-01-01T23:59:59.000Z

    share of per capita plastics demand, and net imports. Chinaíproduction = Per capita primary plastic demand = Totalpopulation = Primary plastic demand to ethylene demand ratio

  9. Reaction Path Optimization with Holonomic Constraints and Kinetic Energy Potentials

    SciTech Connect (OSTI)

    Brokaw, Jason B.; Haas, Kevin R.; Chu, Jhih-wei

    2009-08-11T23:59:59.000Z

    Two methods are developed to enhance the stability, efficiency, and robustness of reaction path optimization using a chain of replicas. First, distances between replicas are kept equal during path optimization via holonomic constraints. Finding a reaction path is, thus, transformed into a constrained optimization problem. This approach avoids force projections for finding minimum energy paths (MEPs), and fast-converging schemes such as quasi-Newton methods can be readily applied. Second, we define a new objective function - the total Hamiltonian - for reaction path optimization, by combining the kinetic energy potential of each replica with its potential energy function. Minimizing the total Hamiltonian of a chain determines a minimum Hamiltonian path (MHP). If the distances between replicas are kept equal and a consistent force constant is used, then the kinetic energy potentials of all replicas have the same value. The MHP in this case is the most probable isokinetic path. Our results indicate that low-temperature kinetic energy potentials (<5 K) can be used to prevent the development of kinks during path optimization and can significantly reduce the required steps of minimization by 2-3 times without causing noticeable differences between a MHP and MEP. These methods are applied to three test cases, the C?eq-to-Cax isomerization of an alanine dipeptide, the ?C?- to-ĻC? transition of an ?-D-glucopyranose, and the helix-to-sheet transition of a GNNQQNY heptapeptide. By applying the methods developed in this work, convergence of reaction path optimization can be achieved for these complex transitions, involving full atomic details and a large number of replicas (>100). For the case of helix-to-sheet transition, we identify pathways whose energy barriers are consistent with experimental measurements. Further, we develop a method based on the work energy theorem to quantify the accuracy of reaction paths and to determine whether the atoms used to define a path are enough to provide quantitative estimation of energy barriers.

  10. Columbia University Energy Options & Paths to Climate Stabilization

    E-Print Network [OSTI]

    Mauel, Michael E.

    -lived radioactive components. ∑ Safe: no catastrophic accidents; Low-risk for nuclear materials proliferation WhyMike Mauel Columbia University Energy Options & Paths to Climate Stabilization Aspen, 9 July 2003 Fusion Energy: "Pipe Dream or Panacea" #12;Mike Mauel Columbia University Energy Options & Paths

  11. A middle path for electricity options and sustainable development

    SciTech Connect (OSTI)

    Mills, J.I.; Herring, J.S.

    1994-12-31T23:59:59.000Z

    In a landmark article in Foreign Affairs in October 1976, Amory Lovins presented his vision of two vastly different and seemingly irreconcilable paths that energy provision might take into the future. One path was a ``hard`` path, characterized by extensive development of large, capital-intensive centralized electrical generating facilities and their peripherals, designed with little consideration given to the matching of these facilities to the requirements of the end-use needs. The second, ``soft`` path was characterized by energy technologies that are diverse, operate on renewable energy flows, are relatively simple, less capital-intensive, and matched in scale and energy quality to end-use needs. One of the most controversial arguments in the Lovins` paper was that the ``hard`` and ``soft`` paths are culturally and institutionally antagonistic. In retrospect, it seems this argument was self-fulfilling, for the history of the energy debate throughout the developed world since the appearance of the Lovins` article has been marked by an either-or antagonism that has left little room for serious discussion of a ``middle-path.`` In this paper, we argue that ``middle-path,`` paved with elements of both the soft and hard, is especially suited for developing countries, since they do not now carry the burden of an existing and extensive ``hard path`` energy infrastructure.

  12. MIXED INTEGER PROGRAMMING FOR MULTI-VEHICLE PATH PLANNING

    E-Print Network [OSTI]

    How, Jonathan P.

    .up.pt http://www.fe.up.pt/ecc2001/ Keywords: autonomous vehicles, path planning, collision avoidance Abstract This paper presents a new approach to fuel-optimal path plan- ning of multiple vehicles using a combination will be optimized with respect to both fuel and/or time, and must ensure that the vehicles do not collide with each

  13. Visibility in Discrete Geometry: an application to discrete geodesic paths

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Visibility in Discrete Geometry: an application to discrete geodesic paths David Coeurjolly that are visible from a source pixel. Based on these definitions, we define discrete geodesic paths in dis- crete domain with obstacles. This allows us to introduce a new geodesic metric in discrete geometry

  14. Analog VLSI for Robot Path Planning Mircea Stan Wayne Burleson

    E-Print Network [OSTI]

    Stan, Mircea R.

    . In cartesian space there are two or three dimensions and the robot arm's nonzero dimensions must be takenAnalog VLSI for Robot Path Planning Mircea Stan Wayne Burleson Department of Electrical & Computer­545­4611 fax Abstract Analog VLSI provides a convenient and high­ performance engine for robot path planning

  15. UAV PATH FOLLOWING FOR TARGET OBSERVATION IN WIND

    E-Print Network [OSTI]

    Washington at Seattle, University of

    UAV PATH FOLLOWING FOR TARGET OBSERVATION IN WIND Rolf Rysdyk, University of Washington, Seattle is affected by wind, aircraft performance, and camera limits. Analytic expressions are derived for paths which, and stability of its integration with aircraft dynamics is assessed. An observer estimates wind data, which

  16. Large deviations for rough paths of fractional Brownian motion

    E-Print Network [OSTI]

    Millet, Annie

    limit theorem. Stochastic modeling deals basically with rough path controls. Indeed, the ground-breaking It^o's theory on stochastic differential equations is based on Brownian motion, which has almost surely nowhere differentiable sam- ple paths but only -H¨older continuous ones, with ]0, 1 2 [. Note

  17. Dynamic Path Consistency for Spatial Reasoning Lamia Belouaer, Maroua Bouzid

    E-Print Network [OSTI]

    Boyer, Edmond

    reactive planning and path finding. Let us consider the example of an accident at a nuclear plant. Generally if something goes wrong there are always planned paths from any position in the nuclear plant to the exit. In this regard, several techniques based on the Con- straint Satisfaction Problem (CSP) formalism

  18. Performance-Aware Speculation Control using Wrong Path Usefulness Prediction

    E-Print Network [OSTI]

    at Austin {cjlee, patt}@ece.utexas.edu ßSchool of Computer Science Georgia Institute of Technology hyesoon are useless for processor performance and try to eliminate the execution of all wrong-path instructions incurred by fetch gating mech- anisms that assume wrong-path execution is useless, thereby both im- proving

  19. Water Evaporation: A Transition Path Sampling Study

    E-Print Network [OSTI]

    Patrick Varilly; David Chandler

    2012-10-11T23:59:59.000Z

    We use transition path sampling to study evaporation in the SPC/E model of liquid water. Based on thousands of evaporation trajectories, we characterize the members of the transition state ensemble (TSE), which exhibit a liquid-vapor interface with predominantly negative mean curvature at the site of evaporation. We also find that after evaporation is complete, the distributions of translational and angular momenta of the evaporated water are Maxwellian with a temperature equal to that of the liquid. To characterize the evaporation trajectories in their entirety, we find that it suffices to project them onto just two coordinates: the distance of the evaporating molecule to the instantaneous liquid-vapor interface, and the velocity of the water along the average interface normal. In this projected space, we find that the TSE is well-captured by a simple model of ballistic escape from a deep potential well, with no additional barrier to evaporation beyond the cohesive strength of the liquid. Equivalently, they are consistent with a near-unity probability for a water molecule impinging upon a liquid droplet to condense. These results agree with previous simulations and with some, but not all, recent experiments.

  20. Using shortest path to discover criminal community

    E-Print Network [OSTI]

    Magalingam, Pritheega; Rao, Asha

    2015-01-01T23:59:59.000Z

    Extracting communities using existing community detection algorithms yields dense sub-networks that are difficult to analyse. Extracting a smaller sample that embodies the relationships of a list of suspects is an important part of the beginning of an investigation. In this paper, we present the efficacy of our shortest paths network search algorithm (SPNSA) that begins with an "algorithm feed", a small subset of nodes of particular interest, and builds an investigative sub-network. The algorithm feed may consist of known criminals or suspects, or persons of influence. This sets our approach apart from existing community detection algorithms. We apply the SPNSA on the Enron Dataset of e-mail communications starting with those convicted of money laundering in relation to the collapse of Enron as the algorithm feed. The algorithm produces sparse and small sub-networks that could feasibly identify a list of persons and relationships to be further investigated. In contrast, we show that identifying sub-networks o...

  1. China Energy and Emissions Paths to 2030

    E-Print Network [OSTI]

    Fridley, David

    2012-01-01T23:59:59.000Z

    Natural Gas 5% less efficient than diesel, assuming same trendNatural gas buses are assumed to follow the same improvement trendNatural Gas Oil Products Solid Fuels Unlike primary energy, CO 2 emissions trends

  2. The National Ignition Facility (NIF) A Path to Fusion Energy

    SciTech Connect (OSTI)

    Moses, E

    2006-11-27T23:59:59.000Z

    Fusion energy has long been considered a promising clean, nearly inexhaustible source of energy. Power production by fusion micro-explosions of inertial confinement fusion (ICF) targets has been a long term research goal since the invention of the first laser in 1960. The NIF is poised to take the next important step in the journey by beginning experiments researching ICF ignition. Ignition on NIF will be the culmination of over thirty years of ICF research on high-powered laser systems such as the Nova laser at LLNL and the OMEGA laser at the University of Rochester as well as smaller systems around the world. NIF is a 192 beam Nd-glass laser facility at LLNL that is more than 90% complete. The first cluster of 48 beams is operational in the laser bay, the second cluster is now being commissioned, and the beam path to the target chamber is being installed. The Project will be completed in 2009 and ignition experiments will start in 2010. When completed NIF will produce up to 1.8 MJ of 0.35 {micro}m light in highly shaped pulses required for ignition. It will have beam stability and control to higher precision than any other laser fusion facility. Experiments using one of the beams of NIF have demonstrated that NIF can meet its beam performance goals. The National Ignition Campaign (NIC) has been established to manage the ignition effort on NIF. NIC has all of the research and development required to execute the ignition plan and to develop NIF into a fully operational facility. NIF will explore the ignition space, including direct drive, 2{omega} ignition, and fast ignition, to optimize target efficiency for developing fusion as an energy source. In addition to efficient target performance, fusion energy requires significant advances in high repetition rate lasers and fusion reactor technology. The Mercury laser at LLNL is a high repetition rate Nd-glass laser for fusion energy driver development. Mercury uses state-o-the art technology such as ceramic laser slabs and light diode pumping for improved efficiency and thermal management. Progress in NIF, NIC, Mercury, and the path forward for fusion energy will be presented.

  3. Lexicalisation Patterns of Rendering Path Descriptions in Polish Translation from English

    E-Print Network [OSTI]

    Ch?opek, Dorota

    2012-02-01T23:59:59.000Z

    with constructions lexicalising precise path through satellites, Polish translation renders the path, neutralises it, changes it, or omits the path conveyed by the original version, which is illustrated by this paper....

  4. New England Forests: The Path to Sustainability

    E-Print Network [OSTI]

    Wolfe, Patrick J.

    are imported from Canada, and increasingly from Latin America and Asia. With more emphasis on local wood, we, where they come from, and how they are produced. Public interest in local food and renewable energy England have increased production of local, renewable so- lar and wind energy. Yet hiding in plain sight

  5. E-Print Network 3.0 - accurate path integration Sample Search...

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

    hardware but is able to create accurate path infor- mation... accurate path profile. Upon ... Source: Colorado at Boulder, University of - Computer Engineering Research...

  6. E-Print Network 3.0 - adaptive path planning Sample Search Results

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

    THE TRANS-PACIFIC CROSSING: LONG RANGE ADAPTIVE PATH PLANNING FOR UAVS THROUGH VARIABLE WIND FIELDS... , and thus any path planning process must be adaptable to these changes....

  7. Thermal Conductivity Spectroscopy Technique to Measure Phonon Mean Free Paths

    E-Print Network [OSTI]

    Schmidt, A. J.

    Size effects in heat conduction, which occur when phonon mean free paths (MFPs) are comparable to characteristic lengths, are being extensively explored in many nanoscale systems for energy applications. Knowledge of MFPs ...

  8. Multiphase flow and control of fluid path in microsystems

    E-Print Network [OSTI]

    Jhunjhunwala, Manish

    2005-01-01T23:59:59.000Z

    Miniaturized chemical-systems are expected to have advantages of handling, portability, cost, speed, reproducibility and safety. Control of fluid path in small channels between processes in a chemical/biological network ...

  9. Optimally controlling hybrid electric vehicles using path forecasting

    E-Print Network [OSTI]

    Katsargyri, Georgia-Evangelina

    2008-01-01T23:59:59.000Z

    Hybrid Electric Vehicles (HEVs) with path-forecasting belong to the class of fuel efficient vehicles, which use external sensory information and powertrains with multiple operating modes in order to increase fuel economy. ...

  10. Stochastic mobility-based path planning in uncertain environments

    E-Print Network [OSTI]

    Kewlani, Gaurav

    The ability of mobile robots to generate feasible trajectories online is an important requirement for their autonomous operation in unstructured environments. Many path generation techniques focus on generation of time- ...

  11. Optimally Controlling Hybrid Electric Vehicles using Path Forecasting

    E-Print Network [OSTI]

    Kolmanovsky, Ilya V.

    The paper examines path-dependent control of Hybrid Electric Vehicles (HEVs). In this approach we seek to improve HEV fuel economy by optimizing charging and discharging of the vehicle battery depending on the forecasted ...

  12. Path dependent receding horizon control policies for hybrid electric vehicles

    E-Print Network [OSTI]

    Kolmanovsky, Ilya V.

    Future hybrid electric vehicles (HEVs) may use path-dependent operating policies to improve fuel economy. In our previous work, we developed a dynamic programming (DP) algorithm for prescribing the battery state of charge ...

  13. Recursive Path Orderings can be ContextSensitive

    E-Print Network [OSTI]

    Lucas, Salvador

    Recursive Path Orderings can be Context­Sensitive Cristina Borralleras 1 , Salvador Lucas 2. Rubio is also supported by the spanish DURSI group 2001SGR 00254. Salvador Lucas is partially supported

  14. Maximal Sensitive Dependence and the Optimal Path to Epidemic Extinction

    E-Print Network [OSTI]

    Forgoston, Eric; Shaw, Leah B; Schwartz, Ira B

    2010-01-01T23:59:59.000Z

    Extinction of an epidemic or a species is a rare event that occurs due to a large, rare stochastic fluctuation. Although the extinction process is dynamically unstable, it follows an optimal path that maximizes the probability of extinction. We show that the optimal path is also directly related to the finite-time Lyapunov exponents of the underlying dynamical system in that the optimal path displays maximum sensitivity to initial conditions. We consider several stochastic epidemic models, and examine the extinction process in a dynamical systems framework. Using the dynamics of the finite-time Lyapunov exponents as a constructive tool, we demonstrate that the dynamical systems viewpoint of extinction evolves naturally toward the optimal path.

  15. Navigating Roadblocks on the Path to Advanced Biofuels Deployment

    Broader source: Energy.gov [DOE]

    Breakout Session 2: Frontiers and Horizons Session 2ĖC: Navigating Roadblocks on the Path to Advanced Biofuels Deployment Arunas Chesonis, Chief Executive Officer and Chairman of the Board, Sweetwater Energy

  16. A Path to the Arrow-Debreu Competitive Market Equilibrium

    E-Print Network [OSTI]

    Yinyu Ye

    2006-07-28T23:59:59.000Z

    Jul 28, 2006 ... ... solution is $O(n^4L)$ which is in line with the best complexity bound ... This path is derived from the weighted logarithmic utility and barrier†...

  17. Identification of MHF Fracture Planes and Flow Paths- a Correlation...

    Open Energy Info (EERE)

    Identification of MHF Fracture Planes and Flow Paths- a Correlation of Well Log Data with Patterns in Locations of Induced Seismicity Jump to: navigation, search OpenEI Reference...

  18. The paths and characteristics of real estate entrepreneurs

    E-Print Network [OSTI]

    Kazmierski, Michael (Michael Anthony)

    2008-01-01T23:59:59.000Z

    What paths have real estate entrepreneurs taken to establish their own firm? Also, what characteristics did they develop and utilize in the process? This thesis gives the unique opportunity to better understand the life ...

  19. Human-Automation Path Planning Optimization and Decision Support

    E-Print Network [OSTI]

    Cummings, M.L.

    2011-01-01T23:59:59.000Z

    Path planning is a problem encountered in multiple domains, including unmanned vehicle control, air traffic control, and future exploration missions to the Moon and Mars. Due to the voluminous and complex nature of the ...

  20. Finding Smallest Paths in Rectilinear Polygons on a Hypercube Multiprocessor

    E-Print Network [OSTI]

    Zhang, Richard "Hao"

    vertices on a hypercube multiprocessor with max(n; p) processors in time O(t + log n) where p = n log n). Smallest paths have applications in VLSI design (minimizing vias), robot motion planning, and the design

  1. Optimal multi-robot path planning with temporal logic constraints

    E-Print Network [OSTI]

    Ulusoy, Alphan

    In this paper we present a method for automatically planning optimal paths for a group of robots that satisfy a common high level mission specification. Each robot's motion in the environment is modeled as a weighted ...

  2. Thin magnetic crystals are path to ferromagnetic graphene | ornl...

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

    Thin magnetic crystals are path to ferromagnetic graphene January 23, 2015 The crystal structure of CrI3 includes hexagonal nets formed by Cr atoms (blue) with magnetic moments...

  3. Panel Discussion: Career Paths in Energy & Sustainability: Perspective...

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

    a.m.-7 p.m. The events include: 11:30 a.m.-2 p.m. Panel Discussion "Career Paths in Energy & Sustainability: Perspectives from Successful Women Professionals," including Dr....

  4. Threat-aware Path Planning in Uncertain Urban Environments

    E-Print Network [OSTI]

    Aoude, Georges

    This paper considers the path planning problem for an autonomous vehicle in an urban environment populated with static obstacles and moving vehicles with uncertain intents. We propose a novel threat assessment module, ...

  5. Vickrey Prices and Shortest Paths: What is an edge worth?

    E-Print Network [OSTI]

    Chen, Yiling

    network and electrical routing, trans- portation, robot motion planning, critical path computation interest in pric- ing networks and computing resources, which in turn is prompted by the prominent role

  6. Vickrey Prices and Shortest Paths: What is an edge worth?

    E-Print Network [OSTI]

    Sadeh, Norman M.

    . Their applications include network and electrical routing, trans≠ portation, robot motion planning, critical path by recent interest in pric≠ ing networks and computing resources, which in turn is prompted by the prominent

  7. Path integrals for stiff polymers applied to membrane physics

    E-Print Network [OSTI]

    D. S. Dean; R. R. Horgan

    2007-04-11T23:59:59.000Z

    Path integrals similar to those describing stiff polymers arise in the Helfrich model for membranes. We show how these types of path integrals can be evaluated and apply our results to study the thermodynamics of a minority stripe phase in a bulk membrane. The fluctuation induced contribution to the line tension between the stripe and the bulk phase is computed, as well as the effective interaction between the two phases in the tensionless case where the two phases have differing bending rigidities.

  8. Turbine Steam Path Audits for Improved Performance and Profitability

    E-Print Network [OSTI]

    Babson, P. E.

    TURBINE STEAM PATH AUDITS FOR IMPROVED PERFORMANCE AND PROFITABILITY PAUL E. BABSON, DIRECTOR, BUSINESS DEVELOPMENT, ENCOTECH, INC., SCHENECTADY, NEW YORK ABSTRACT This paper describes the use and value of conducting steam path audits... in turbines. Critical measurements and observations made during overhaul identify and quantify the effects of component degradations upon turbine performance as compared to design conditions. The information generated permits performance oriented repair...

  9. Digital production pipelines: examining structures and methods in the computer effects industry

    E-Print Network [OSTI]

    Bettis, Dane Edward

    2005-08-29T23:59:59.000Z

    Computer animated films require collaboration: blending artistic concept with technical skill, meeting budget constraints and adhering to deadlines. The path which production follows from initial idea to finished product is known as the pipeline...

  10. Paths and Kostka--Macdonald Polynomials

    E-Print Network [OSTI]

    Anatol N. Kirillov; Reiho Sakamoto

    2009-12-05T23:59:59.000Z

    We give several equivalent combinatorial descriptions of the space of states for the box-ball systems, and connect certain partition functions for these models with the q-weight multiplicities of the tensor product of the fundamental representations of the Lie algebra gl(n). As an application, we give an elementary proof of the special case t=1 of the Haglund--Haiman--Loehr formula. Also, we propose a new class of combinatorial statistics that naturally generalize the so-called energy statistics.

  11. NGNP Project 2011 Status and Path Forward

    SciTech Connect (OSTI)

    L.E. Demick

    2011-12-01T23:59:59.000Z

    High Temperature Gas Reactor (HTGR) technology can play an important role in the United Statesí energy future by extending the use of nuclear energy for non-electricity energy production missions as well as continuing to provide a considerable base load electric power generation capability. Extending nuclear energy into the industrial and transportation sectors through the co-production of process heat and electricity provides safe and reliable energy for these sectors in an environmentally responsible manner. The safety case for the modular HTGR provides a substantial improvement in nuclear plant safety for the protection of the public and the environment, and supports collocation of the HTGR with major industrial facilities. The NGNP Project at the Idaho National Laboratory has been working toward an objective of commercializing the HTGR technology under DOE direction since 2006. The Project is undergoing a quantum shift in direction and scope as a result of recent DOE decisions. This paper summarizes where the Project has been, where it is at the time of this writing and what is needed in future activities to commercialize HTGR technology.

  12. An Assessment of Energy-Related Career Paths of Senior Industrial Assessment Center Program Alumni

    SciTech Connect (OSTI)

    Martin, M.A.

    2003-10-20T23:59:59.000Z

    The purpose of this study was to assess the career paths of alumni from the U.S. Department of Energy's Industrial Assessment Center (IAC) program. IAC was originally named the Energy Analysis and Diagnostic Center (EADC) program when it began in association with four schools in 1976. The current IAC program provides funding to 26 engineering colleges, located in centers across the United States, to conduct energy, waste, and productivity assessments for small- to medium-sized manufacturing establishments within their respective regions. Through part-time employment with the university, students receive training and in turn conduct assessments for local manufacturers, under the direct supervision of engineering faculty. Annually, IAC participants conduct over 700 assessments, and each assessment generates recommendations for energy savings, energy cost savings, and waste and productivity cost savings customized for individual clients. An earlier study determined that energy savings could be attributed to alumni of the IAC program who take their IAC experiences with them to the professional workplace. During their careers, the alumni conduct additional energy assessments as well as influence energy efficiency through design, teaching and training, and other activities. Indeed, a significant level of program benefits can be attributed to the alumni. This project addressed such specific questions as: How many years after graduation are IAC alumni involved in energy-efficiency activities? What different methods do they use to influence energy-efficiency decisions? To answer these questions, the University of Tennessee, Knoxville (UT) surveyed IAC senior alumni, defined as those who graduated in 1995 or earlier. Section 2 describes the survey used in this research. The actual survey can be found in Appendix A. Section 3 describes our approach to data collection. Section 4 presents descriptive statistics about the senior alumni who responded to the survey. Section 5 begins with the presentation of two frameworks used to help analyze the data about alumni career paths and then presents the career path results. Section 6 offers concluding remarks.

  13. Concurrent constraint programming-based path planning for uninhabited air vehicles

    E-Print Network [OSTI]

    Bonaventure, Olivier

    Concurrent constraint programming-based path planning for uninhabited air vehicles Stefano Gualandi path length, fuel consumption, and path risk are given as well. 1. INTRODUCTION Path planning is a well, it becomes relevant when defining an air vehicle mission. Due to all the domain constraints to be considered

  14. Networks in Buildings: Which Path Forward?

    SciTech Connect (OSTI)

    Nordman, Bruce

    2008-08-17T23:59:59.000Z

    To date, digital networks have principally been installed for connecting information technology devices, with more modest use in consumer electronics, security, and large building control systems. The next 20 years will see much greater deployment of networks in buildings of all types, and across all end uses. Most of these are likely to be introduced primarily for reasons other than energy efficiency, and add energy use for network interfaces and network products. Widespread networking could easily lead to increased energy use, and experience with IT and CE networks suggests this may be likely. Active engagement by energy efficiency professionals in the architecture and design of future networks could lead to their being a large and highly cost-effective tool for efficiency. However, network standards are complex and take many years to develop and negotiate so that lack of action on this in the near term may foreclose important opportunities for years or decades to come. Digital networks need to be common globally, providing another challenge to building systems and elements that are more commonly designed only for national or regional markets. Key future networks are lighting, climate control, and security/presence. This paper reviews some examples of past network designs and use and the lessons they hold for future building networks. It also highlights key needed areas for research, policy, and standards development.

  15. Magnetic Relativistic SchrŲdinger Operators and \\\\Imaginary-time Path Integrals

    E-Print Network [OSTI]

    Takashi Ichinose

    2014-03-24T23:59:59.000Z

    Three magnetic relativistic Schr\\"odinger operators corresponding to the classical relativistic Hamiltonian symbol with magnetic vector and electric scalar potentials are considered, dependent on how to quantize the kinetic energy term $\\sqrt{(\\xi-A(x))^2 +m^2}$. We discuss their difference in general and their coincidence in the case of constant magnetic fields, and also study whether they are covariant under gauge transformation. Then results are reviewed on path integral representations for their respective imaginary-time relativistic Schr\\"odinger equations, i.e. heat equations, by means of the probability path space measure related to the L\\'evy process concerned.

  16. Page 1Where will Microsoft's green path lead? | InfoWorld | Weblog | March 13, 2008 | By Ted Samson 17/04/2008 08:44:53 PMhttp://weblog.infoworld.com/archives/emailPrint.jsp?R=printThis&A=http://weblog.in...

    E-Print Network [OSTI]

    Loke, Seng W. - Loke, Seng W.

    Page 1Where will Microsoft's green path lead? | InfoWorld | Weblog | March 13, 2008 | By Ted SamsonPrint.jsp?R=printThis&A=http://weblog.in... Back to article Print this Where will Microsoft's green path lead? For months now, many of the hardware lengths to highlight their green products, plans, and corporate visions. Now the software behemoth

  17. Materialization TradeOffs in Hierarchical Shortest Path Algorithms

    E-Print Network [OSTI]

    Shekhar, Shashi

    Materialization Trade­Offs in Hierarchical Shortest Path Algorithms Shashi Shekhar, Andrew Fetterer] form the kernel of many important applica­ tions including transportation; water, electric, and gas utilities; telephone networks; urban management; sewer maintenance, and irrigation canal man­ agement

  18. MANAGING HANFORD'S LEGACY NO-PATH-FORWARD WASTES TO DISPOSITION

    SciTech Connect (OSTI)

    WEST LD

    2011-01-13T23:59:59.000Z

    The U.S. Department of Energy (DOE) Richland Operations Office (RL) has adopted the 2015 Vision for Cleanup of the Hanford Site. This vision will protect the Columbia River, reduce the Site footprint, and reduce Site mortgage costs. The CH2M HILL Plateau Remediation Company's (CHPRC) Waste and Fuels Management Project (W&FMP) and their partners support this mission by providing centralized waste management services for the Hanford Site waste generating organizations. At the time of the CHPRC contract award (August 2008) slightly more than 9,000 m{sup 3} of waste was defined as 'no-path-forward waste.' The majority of these wastes are suspect transuranic mixed (TRUM) wastes which are currently stored in the low-level Burial Grounds (LLBG), or stored above ground in the Central Waste Complex (CWC). A portion of the waste will be generated during ongoing and future site cleanup activities. The DOE-RL and CHPRC have collaborated to identify and deliver safe, cost-effective disposition paths for 90% ({approx}8,000 m{sup 3}) of these problematic wastes. These paths include accelerated disposition through expanded use of offsite treatment capabilities. Disposal paths were selected that minimize the need to develop new technologies, minimize the need for new, on-site capabilities, and accelerate shipments of transuranic (TRU) waste to the Waste Isolation Pilot Plant (WIPP) in Carlsbad, New Mexico.

  19. "Multi-machine" Strategy: The Other Path of the FESAC

    E-Print Network [OSTI]

    extrapolating to steady-state. · Demonstrate steady-state heat removal and particle control at power plant & performance under power plant conditions [5 to 10 MW-yr/m2]. #12;1987 TPA Burning Plasma Logic · Employed & Simulation FESAC/Snowmass Report: ITER-Based Development Path #12;Roadmap to Fusion Power EU Variation

  20. Path Computation Element (PCE) 1. What is QoS?

    E-Print Network [OSTI]

    Path Computation Element (PCE) PCE #12;Index 1. What is QoS? 2. Why it's necessary in networks? 3(OSPF) 5. Solution: PCE 6. How PCE works? 7. PCE andTED 8. PCE and Multi-Domains 9. PCEArchitecture 10 increments the network overhead Creates inaccuracy 8 #12;Solution: PCE Definition: An entity (component

  1. Path Placement Optimization of Manipulators Based on Energy Consumption

    E-Print Network [OSTI]

    Boyer, Edmond

    utilisant la consommation ¬īenerg¬īetique comme crit`ere. Ce travail propose une mthodologie pour d¬īes: Placement de trajectoires, Consommation ¬īenerg¬īetique, Optimisation, Manipu- lateur parall`eles. hal to perform a given operation more efficiently with respect to the energy consumed. The path placement problem

  2. Update on Genomic Studies of Algae Paths toward Algal Genomics

    E-Print Network [OSTI]

    Update on Genomic Studies of Algae Paths toward Algal Genomics Arthur R. Grossman* The Carnegie of genomic information that is being used to help researchers understand the gene content of organisms, how the expression of genes. In this introductory manuscript, I discuss select algae and how genomics is impacting

  3. A Probabilistic Approach to Optimal Robust Path Planning with Obstacles

    E-Print Network [OSTI]

    Williams, Brian C.

    and Brian Williams Abstract-- Autonomous vehicles need to plan trajectories to a specified goal that avoid of aircraft obstacle avoidance scenarios. I. INTRODUCTION Path planning for autonomous vehicles the future probabilistic distribution of the vehicle state so that the probability of collision

  4. Chance-Constrained Optimal Path Planning with Obstacles

    E-Print Network [OSTI]

    Williams, Brian C.

    . Williams Abstract--Autonomous vehicles need to plan trajectories to a specified goal that avoid obstacles validation with an aircraft obstacle avoidance example. I. INTRODUCTION Path planning for autonomous vehicles approach plans the future probabilistic distribution of the vehicle state so that the probability

  5. Robust Path Planning and Feedback Design under Stochastic Uncertainty

    E-Print Network [OSTI]

    Williams, Brian C.

    . Introduction Autonomous vehicles such as Unmanned Air Vehicles (UAVs) need to be able to plan trajectories; prior work showed that a UAV operating at a constant altitude as well as other autonomous vehicles canRobust Path Planning and Feedback Design under Stochastic Uncertainty Lars Blackmore Autonomous

  6. Path Cost Optimization Using Genetic Algorithm with Supervised Crossover Operator

    E-Print Network [OSTI]

    Tse, Chi K. "Michael"

    are widely applied in maneu- vering robots, such as autonomous underwater vehicles [1] and unmanned aerial effective way. The term cost can be inter- preted as fuel consumption, path visibility, probability of being and solution quality of genetic algorithms. 1. Introduction Thanks to highly advanced autonomous technologies

  7. Allinea DDT: Your Partner in Finding Debugged Paths on Mira

    E-Print Network [OSTI]

    Kemner, Ken

    Allinea DDT: Your Partner in Finding Debugged Paths on Mira Ian Lumb Senior! #12;BG /P Case Study: Debugging Process Reproduced the crash Ran Allinea DDT in offline mode ­ MPI implementation bug? ­ Memory bug? Ran Allinea DDT in offline mode again Memory debugging enabled

  8. Communication and Path Planning Strategies of a Robotic Coverage Operation

    E-Print Network [OSTI]

    Mostofi, Yasamin

    and communication energy costs. However, simplified path loss models are utilized to model the communication can be utilized to escape bad communication spots and save the overall energy consump- tion to a remote station. The goal of the robot is to minimize its total energy consumption, which includes both

  9. Navigating Complex Labyrinths: Optimal Paths from Chemical Waves

    E-Print Network [OSTI]

    Showalter, Kenneth

    Navigating Complex Labyrinths: Optimal Paths from Chemical Waves Oliver Steinbock, Agota T6th information on chemical waves propagating through mazes prepared with the Belousov-Zhabotinsky reaction target point. Collisions of waves that were temporarily separated by obstacles mark boundary lines

  10. Three Paths to a Revised Information and Computer

    E-Print Network [OSTI]

    Gering, Jon C.

    Three Paths to a Revised Information and Computer Literacy Requirement May 1, 2006 Summary implementation of the Computer Literacy requirement. We have attempted to reconcile UGC's desire not to implement previous vote to abolish the Computer Literacy requirement. We have also taken into consideration

  11. Sensor Beams, Obstacles, and Possible Paths Benjamin Tovar1

    E-Print Network [OSTI]

    LaValle, Steven M.

    Sensor Beams, Obstacles, and Possible Paths Benjamin Tovar1 , Fred Cohen2 , and Steven M. LaValle1, or animal) travels among obstacles and binary detection beams. The task is to determine the possible agent settings, which may arise from physical sensor beams or virtual beams that are derived from other sensing

  12. Creating an ICT Portfolio at PATH Richard Anderson

    E-Print Network [OSTI]

    Anderson, Richard

    · Diagnostic tests for diseases · Reproductive health technologies · Maternal & child health technologies in health technologies · Founded 1977 N ki i 70 t i­ Now working in 70 countries · Program for Appropriate Technology in Health 1/21/2010 2Change Seminar PATH focus · Solutions for emerging and epidemic diseases

  13. Finding the Most Likely Infection Path in Networks with Limited ...

    E-Print Network [OSTI]

    2013-11-08T23:59:59.000Z

    directed tree that spans to a set of known infected nodes, subject to path .... and simplified analytical models to increasingly in-depth stochastic agent based ... minimum cost Steiner tree such that the total amount of ressources used in the tree†...

  14. Tracking butterfly flight paths across the landscape with harmonic radar

    E-Print Network [OSTI]

    Northampton, University of

    Tracking butterfly flight paths across the landscape with harmonic radar E. T. Cant1,*, A. D. Smith of five butterfly species were successfully tracked using harmonic radar within an agricultural landscape. Keywords: butterfly flight; harmonic radar; linear landscape features; Aglais urticae; Inachis io 1

  15. Noncommutative Harmonic Oscillator at Finite Temperature: A Path Integral Approach

    E-Print Network [OSTI]

    A. Jahan

    2012-08-01T23:59:59.000Z

    We use the path integral approach to a two-dimensional noncommutative harmonic oscillator to derive the partition function of the system at finite temperature. It is shown that the result based on the Lagrangian formulation of the problem, coincides with the Hamiltonian derivation of the partition function.

  16. The Number of Hamiltonian Paths in a Rectangular Grid

    E-Print Network [OSTI]

    Collins, Karen L.

    The Number of Hamiltonian Paths in a Rectangular Grid@wesleyan.edu Abstract It is easy to find out which rectangular m vertex by n vertex grids have answers for grids with fixed m for m = 1, 2, 3, 4, 5. 1 Introduction Given a grid with m vertices

  17. A Miniature Biomimetic Robotic Fish and Its Realtime Path Planning

    E-Print Network [OSTI]

    Boyer, Edmond

    A Miniature Biomimetic Robotic Fish and Its Realtime Path Planning Chao Zhou, Zhiqiang Cao, Shuo a novel miniature biomimetic robotic fish based on single link with compact structure, high maneuverability and multiple sensors. The robotic fish mimics the motion of Thunniform mode, and the methods

  18. The Museum Theorem: Thick Face-Paths and

    E-Print Network [OSTI]

    West, Douglas B.

    The Museum Theorem: Thick Face-Paths and Hamiltonian-Connectedness in Plane Graphs Xiaoyun Lu #12;Visiting a Museum The Problem: The entrance and exit of a museum are fixed. You insist on visiting room F. The pieces of what you skip should be somehow "small". #12;Visiting a Museum The Problem

  19. Many Paths to Alopecia via Compromised Regeneration of Hair

    E-Print Network [OSTI]

    Chuong, Cheng-Ming

    Many Paths to Alopecia via Compromised Regeneration of Hair Follicle Stem Cells Ji Li1,2,3,4 , Ting regeneration, or increased destruction of hair follicles. Much work has elucidated the roles of diffusible morphogens in modulating hair follicle stem cell activities. Recent studies have revealed novel molecular

  20. World Oil Price Cases (released in AEO2005)

    Reports and Publications (EIA)

    2005-01-01T23:59:59.000Z

    World oil prices in Annual Energy Outlook 2005 are set in an environment where the members of OPEC (Organization of the Petroleum Exporting Countries) are assumed to act as the dominant producers, with lower production costs than other supply regions or countries. Non-OPEC oil producers are assumed to behave competitively, producing as much oil as they can profitability extract at the market price for oil. As a result, the OPEC member countries will be able effectively to set the price of oil when they can act in concert by varying their aggregate production. Alternatively, OPEC members could target a fixed level of production and let the world market determine the price.

  1. Tracking the Path of the Sun: Profiling an NREL Senior Scientist...

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

    Tracking the Path of the Sun: Profiling an NREL Senior Scientist Tracking the Path of the Sun: Profiling an NREL Senior Scientist June 5, 2012 - 1:27pm Addthis Metrologist Ibrahim...

  2. Scientists at ALS Find New Path to More Efficient Organic Solar...

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

    Scientists at ALS Find New Path to More Efficient Organic Solar Cells Scientists at ALS Find New Path to More Efficient Organic Solar Cells Print Monday, 07 January 2013 00:00...

  3. E-Print Network 3.0 - advanced open-path atmospheric Sample Search...

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

    open-path atmospheric Search Powered by Explorit Topic List Advanced Search Sample search results for: advanced open-path atmospheric Page: << < 1 2 3 4 5 > >> 1 Results: Field...

  4. Moisture Risk in Unvented Attics Due to Air Leakage Paths

    SciTech Connect (OSTI)

    Prahl, D.; Shaffer, M.

    2014-11-01T23:59:59.000Z

    IBACOS completed an initial analysis of moisture damage potential in an unvented attic insulated with closed-cell spray polyurethane foam. To complete this analysis, the research team collected field data, used computational fluid dynamics to quantify the airflow rates through individual airflow (crack) paths, simulated hourly flow rates through the leakage paths with CONTAM software, correlated the CONTAM flow rates with indoor humidity ratios from Building Energy Optimization software, and used Warme und Feuchte instationar Pro two-dimensional modeling to determine the moisture content of the building materials surrounding the cracks. Given the number of simplifying assumptions and numerical models associated with this analysis, the results indicate that localized damage due to high moisture content of the roof sheathing is possible under very low airflow rates. Reducing the number of assumptions and approximations through field studies and laboratory experiments would be valuable to understand the real-world moisture damage potential in unvented attics.

  5. Gas-path leakage seal for a turbine

    DOE Patents [OSTI]

    Bagepalli, B.S.; Aksit, M.F.; Farrell, T.R.

    1999-08-10T23:59:59.000Z

    A gas-path leakage seal for generally sealing a gas-path leakage-gap between spaced-apart first and second members of a turbine (such as combustor casing segments of a gas turbine). The seal includes a flexible and generally imperforate metal sheet assemblage having opposing first and second surfaces and two opposing raised edges extending a generally identical distance above and below the surfaces. A first cloth layer assemblage has a thickness generally equal to the previously-defined identical distance and is superimposed on the first surface between the raised edges. A second cloth layer assemblage is generally identical to the first cloth layer assemblage and is superimposed on the second surface between the raised edges. 5 figs.

  6. Evaluation of a total energy sensor for glide path control

    E-Print Network [OSTI]

    Oseguera, Rosa Maria

    1987-01-01T23:59:59.000Z

    of optimization problems and boundary conditions. The performance index was defined in terms of altitude h (relative and absolute), or path inclination 7 (relative and absolute) to determine the optimal trajectory on take-off through a wind shear. Resulting... flow. The subsequent mass flow was measured by a constant-temperature hot film probe in the duct. Airspeed, altitude, and climb speed were recorded using an analog and a digital recording system. The wind field was modeled approximately...

  7. Exploring Multi-path Communication in Hybrid Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Exploring Multi-path Communication in Hybrid Mobile Ad Hoc Networks Roberto Speicys Cardoso the challenges involved in implementing multi- path communication on a middleware for hybrid mobile ad hoc words: Multi-path routing, middleware, ad hoc networks 1 Introduction Ambient computing requires

  8. Path Following Controller for a Quadrotor Helicopter Ashton Roza, Manfredi Maggiore

    E-Print Network [OSTI]

    Maggiore, Manfredi

    the path and yaw specifications are described through the system outputs and disturbance rejection profile of the quadrotor on the path and its yaw angle as a function of the displacement. I. INTRODUCTION reference signal that moves along the path while simultaneously specifying yaw angle. The majority

  9. TIME DISCRETE GEODESIC PATHS IN THE SPACE OF IMAGES B. BERKELS, A. EFFLAND, M. RUMPF

    E-Print Network [OSTI]

    Rumpf, Martin

    TIME DISCRETE GEODESIC PATHS IN THE SPACE OF IMAGES B. BERKELS, A. EFFLAND, M. RUMPF Abstract and intensity variation. A robust and effective variational time discretization of geodesics paths is proposed requirements for the input images, the existence of discrete geodesic paths defined as minimizers

  10. A Survey of Geodesic Paths on 3D Surfaces$ Prosenjit Bosea

    E-Print Network [OSTI]

    Wuhrer, Stefanie

    A Survey of Geodesic Paths on 3D Surfaces$ Prosenjit Bosea , Anil Maheshwaria , Chang Shub of theoretically and practically relevant algorithms to compute geodesic paths and distances on three on S is called a geodesic path on the surface and the shortest distance between two points on S is called

  11. 2D and 3D Visibility in Discrete Geometry: an application to discrete geodesic paths

    E-Print Network [OSTI]

    Boyer, Edmond

    1 2D and 3D Visibility in Discrete Geometry: an application to discrete geodesic paths D discrete geodesic paths in discrete domain with obstacles. This allows us to introduce a new geodesic metric in discrete geometry. Keywords: discrete visibility, geodesic path, distance transform, discrete

  12. Transition Path, Quasi-potential Energy Landscape and Stability of Genetic Switches Xiaoguang Li,2

    E-Print Network [OSTI]

    Li, Tiejun

    Transition Path, Quasi-potential Energy Landscape and Stability of Genetic Switches Cheng Lv,1, reconstructing the global quasi-potential energy landscape, analyzing the uphill and downhill transition paths the properties of transition paths, discuss their relation to the quasi-potential energy landscape

  13. Sustainable Infrastructure Practices Bicycle Paths & Parking Areas, Page 1 UC SANTA BARBARA

    E-Print Network [OSTI]

    Bigelow, Stephen

    Sustainable Infrastructure Practices ­ Bicycle Paths & Parking Areas, Page 1 UC SANTA BARBARA Sustainable Infrastructure Practices ­ Bicycle Paths and Parking Areas Contact: Administrative Services BICYCLE PATHS AND PARKING AREAS OVERVIEW The bicycle system at UCSB is a primary element of the campus

  14. Advanced method for turbine steam path deterioration and performance analysis

    SciTech Connect (OSTI)

    Kubiak, J.; Angel, F. del; Carnero, A.; Campos, A.; Urquiza, G.; Marino, C.; Villegas, M. [Inst. de Investigaciones Electricas, Temixco, Morelos (Mexico). Div. Sistemas Mecanicos

    1996-12-31T23:59:59.000Z

    The deterioration of a Steam Path affects the efficiency of a turbine. The most critical factors which affect the efficiency of steam and gas turbines are: seals wearing out, deposits, corrosion which causes material losses, solid particle erosion which leads to severe blade trailing edge material losses and others. Computer programs for design analysis of steam and gas turbines were developed. The input data are the steam or gas parameters before and after the turbine, mass flow and the blade path geometry (length, width, diameter, metal angles and clearances). The program calculates steam and gas parameters and their deviation from the design data. The blade path deterioration changes the dimensions such as blade throat, and in extreme cases also the angles. Putting the actual geometry into the program, the deviations from the design points are calculated exactly. The deviations expressed in kW as losses per stage are determined and listed. The paper briefly describes the program algorithm, sensitivity to geometry measurement errors and overall exactitude. Also, examples from field evaluations of some turbines are presented and illustrated. These tools are very helpful to the management the power plants in undertaking a correct decision concerning the date of the next major maintenance and replacement part procurement. The data gathered can be utilized for a more precise performance diagnostic during operation of the turbine.

  15. The Path to Savings: Understanding the Federal Purchase of Energy-Consuming Products

    E-Print Network [OSTI]

    Taylor, Margaret

    2014-01-01T23:59:59.000Z

    Commercial Air-Source Heat Pumps $3K Ė 25K Commercial Boilers 3K Ė 25K A Commercial Central Air Conditioners >$25K Commercial Gas Water Heaters

  16. The Path to Savings: Understanding the Federal Purchase of Energy-Consuming Products

    E-Print Network [OSTI]

    Taylor, Margaret

    2014-01-01T23:59:59.000Z

    the McNamara- O'Hara Service Contract Act of 1965, and (3) $Order Supply†&†Service† Contract Construction† Contract

  17. The Path to Savings: Understanding the Federal Purchase of Energy-Consuming Products

    E-Print Network [OSTI]

    Taylor, Margaret

    2014-01-01T23:59:59.000Z

    Cooler Retail†price†($) Gas Water†Heater Goal†to†Code By:>$25K Commercial Gas Water Heaters $3K Ė 25K B Motors Water Heaters (Residential Gas)

  18. An Open-path Laser Transmissometer for Atmospheric Extinction Measurements

    SciTech Connect (OSTI)

    Chandran, P. M. Satheesh; Krishnakumar, C. P.; Varma, Ravi [Department of Physics, National Institute of Technology Calicut, Calicut, Kerala 673 601 (India); Yuen, Wangki; Rood, Mark J. [Department of Civil and Environmental Engineering, University of Illinois Urbana-Champaign, Urbana (United States)

    2011-10-20T23:59:59.000Z

    A transmissometer is an optical instrument which measures transmitted intensity of monochromatic light over a fixed pathlength. Prototype of a simple laser transmissometer has been developed for transmission (or extinction) measurements through suspended absorbers and scatterers in the atmosphere over tens of meters. Instrument consists of a continuous green diode pumped solid state laser, transmission optics, photodiode detectors and A/D data acquisition components. A modulated laser beam is transmitted and subsequently reflected and returned to the unit by a retroreflecting mirror assembly placed several tens of meters away. Results from an open-path field measurement of the instrument are described.

  19. InAs HEMTs: the path to THz electronics?

    E-Print Network [OSTI]

    del Alamo, Jes√ļs A.

    InAs HEMTs: the path to THz electronics? J. A. del Alamo Microsystems Technology Laboratories, MITT III-V HEMTs: megatrends 4 Over time: Lg, InxGa1-xAs channel xInAs InP lattice constant GaAs latt/Pt/Au Schottky gate - Lg=30 nm - Lside=150 nmKim, EDL 2010 Lg=30 nm InAs HEMT #12;-0.6 -0.4 -0.2 0.0 0.2 0.0 0

  20. Amplification of maximally-path-entangled number states

    SciTech Connect (OSTI)

    Agarwal, G. S.; Rai, Amit [Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078 (United States); Chaturvedi, S. [School of Physics, University of Hyderabad, Hyderabad 500046 (India)

    2010-04-15T23:59:59.000Z

    We examine the behavior of a non-Gaussian state like the maximally path-entangled number state commonly known as a N00N state under phase-insensitive amplification. We derive an analytical result for the density matrix of the N00N state for arbitrary gain of the amplifier. We consider cases of both symmetric and antisymmetric amplification of the two modes of the N00N state. We quantitatively evaluate the loss of entanglement by the amplifier in terms of the logarithmic negativity parameter. We find that N00N states are more robust than their Gaussian counterparts.

  1. Path-sensitive analysis for reducing rollback overheads

    DOE Patents [OSTI]

    O'Brien, John K.P.; Wang, Kai-Ting Amy; Yamashita, Mark; Zhuang, Xiaotong

    2014-07-22T23:59:59.000Z

    A mechanism is provided for path-sensitive analysis for reducing rollback overheads. The mechanism receives, in a compiler, program code to be compiled to form compiled code. The mechanism divides the code into basic blocks. The mechanism then determines a restore register set for each of the one or more basic blocks to form one or more restore register sets. The mechanism then stores the one or more register sets such that responsive to a rollback during execution of the compiled code. A rollback routine identifies a restore register set from the one or more restore register sets and restores registers identified in the identified restore register set.

  2. Effects of flow paths on tight gas well performance

    E-Print Network [OSTI]

    Ganpule, Sameer Vasant

    2001-01-01T23:59:59.000Z

    , r? (3-10) Derivative is then defined as, ~PwD d(inr. ) (3-1 I) The late radial flow regime will develop when the pressure transient reaches the top and bottom boundaries. At that time the pressure transient will stop moving in vertical... 2001 Major Subject: Petroleum Engineering EFFECTS OF FLOW PATHS ON TIGHT GAS WELL PERFORMANCE A Thesis by SAMEER VASANT GANPULE Submitted to Texas ARM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE...

  3. Path to High Efficiency Gasoline Engine | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L d F SSalesOE0000652Grow Your EnergyTechnology to Market ¬ĽPath to High

  4. The Path to Program Sustainability | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage ¬Ľof EnergyThe Energy Department Feeds11,IndustrialDepartment of2The Path to

  5. A Surprising Path for Proton Transfer Without Hydrogen Bonds

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered¬ČPNGExperience hands-onASTROPHYSICSHeResearch StochasticA Surprising Path

  6. A Surprising Path for Proton Transfer Without Hydrogen Bonds

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered¬ČPNGExperience hands-onASTROPHYSICSHeResearch StochasticA Surprising PathA

  7. A Surprising Path for Proton Transfer Without Hydrogen Bonds

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered¬ČPNGExperience hands-onASTROPHYSICSHeResearch StochasticA Surprising PathAA

  8. A Surprising Path for Proton Transfer Without Hydrogen Bonds

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered¬ČPNGExperience hands-onASTROPHYSICSHeResearch StochasticA Surprising PathAAA

  9. Status Report on Paths to Closure | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage ¬Ľ SearchEnergyDepartmentScopingOverviewFranklin M.EngineReport on Paths to

  10. A Surprising Path for Proton Transfer Without Hydrogen Bonds

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert SouthwestTechnologies |November 2011A FirstEMSL ShellA StandardA Surprising Path

  11. Geodesic Particle Paths Inside a Nonrotating, Homogeneous, Spherical Body

    E-Print Network [OSTI]

    Homer G. Ellis

    2012-10-18T23:59:59.000Z

    Proceeding from a solution of field equations that are improved versions of Einstein's nonvacuum gravitational field equations one is able to calculate precisely the trajectories of particles traveling inside a nonrotating, homogeneous, spherical body. Application of the results to the conditions of recent measurements of neutrino flight times between a source point A at CERN's European Laboratory for Particle Physics and a point B in either of two detectors (ICARUS or OPERA) at LNGS (Laboratori Nazionale del Gran Sasso), separated by a euclidean distance d(A,B) = 731 km, predicts for the flight time from A to B of a 2 eV neutrino launched with energy 17 GeV, as measured by a clock at B synchronized to a similar clock at A, approximately d/c + 9.3 x 10^{-16} sec. But as measured by inertial observers along the path the predicted flight time is approximately d/c - 2.6 x 10^{-9} sec and the predicted path length is approximately d - 8.4 x 10^{-7} m, which yields c + 321 m/sec for the predicted average inertially referenced speed of the neutrino from A to B.

  12. DISPOSITION PATHS FOR ROCKY FLATS GLOVEBOXES: EVALUATING OPTIONS

    SciTech Connect (OSTI)

    Lobdell, D.; Geimer, R.; Larsen, P.; Loveland, K.

    2003-02-27T23:59:59.000Z

    The Kaiser-Hill Company, LLC has the responsibility for closure activities at the Rocky Flats Environmental Technology Site (RFETS). One of the challenges faced for closure is the disposition of radiologically contaminated gloveboxes. Evaluation of the disposition options for gloveboxes included a detailed analysis of available treatment capabilities, disposal facilities, and lifecycle costs. The Kaiser-Hill Company, LLC followed several processes in determining how the gloveboxes would be managed for disposition. Currently, multiple disposition paths have been chosen to accommodate the needs of the varying styles and conditions of the gloveboxes, meet the needs of the decommissioning team, and to best manage lifecycle costs. Several challenges associated with developing a disposition path that addresses both the radiological and RCRA concerns as well as offering the most cost-effective solution were encountered. These challenges included meeting the radiological waste acceptance criteria of available disposal facilities, making a RCRA determination, evaluating treatment options and costs, addressing void requirements associated with disposal, and identifying packaging and transportation options. The varying disposal facility requirements affected disposition choices. Facility conditions that impacted decisions included radiological and chemical waste acceptance criteria, physical requirements, and measurement for payment options. The facility requirements also impacted onsite activities including management strategies, decontamination activities, and life-cycle cost.

  13. Spectrally resolved spatiotemporal features of quantum paths in high-order harmonic generation

    E-Print Network [OSTI]

    He, Lixin; Zhang, Qingbin; Zhai, Chunyang; Wang, Feng; Shi, Wenjing; Lu, Peixiang

    2015-01-01T23:59:59.000Z

    We experimentally disentangle the contributions of different quantum paths in high-order harmonic generation (HHG) from the spectrally and spatially resolved harmonic spectra. By adjusting the laser intensity and focusing position, we simultaneously observe the spectrum splitting, frequency shift and intensity-dependent modulation of harmonic yields both for the short and long paths. Based on the simulations, we discriminate the physical mechanisms of the intensity-dependent modulation of HHG due to the quantum path interference and macroscopic interference effects. Moreover, it is shown that the atomic dipole phases of different quantum paths are encoded in the frequency shift. In turn, it enables us to retrieve the atomic dipole phases and the temporal chirps of different quantum paths from the measured harmonic spectra. This result gives an informative mapping of spatiotemporal and spectral features of quantum paths in HHG.

  14. action-based path sampling: Topics by E-print Network

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

    Matter (arXiv) Summary: We use transition path sampling to study evaporation in the SPCE model of liquid water. Based on thousands of evaporation trajectories, we...

  15. Policy Strategies and Paths to promote Sustainable Energy Systems - The dynamic Invert Simulation Tool

    E-Print Network [OSTI]

    Stadler, Michael; Kranzl, Lukas; Huber, Claus; Haas, Reinhard; Tsioliaridou, Elena

    2006-01-01T23:59:59.000Z

    Schemes for sustainable energy systemsĒ. InternationalPaths to promote Sustainable Energy Systems - The dynamicmoney - for promoting sustainable energy systems - be spent

  16. Electrical Signal Path Study and Component Assay for the MAJORANA N-Type Segmented Contact Detector

    E-Print Network [OSTI]

    Amman, Mark

    2011-01-01T23:59:59.000Z

    Study 3.1 Baseline Electrical Con?guration and DetectorElectrical Signal Path Study and Component Assay for thethe mechanical design, electrical readout performance, and

  17. Peakons arising as particle paths beneath small-amplitude water waves

    E-Print Network [OSTI]

    Delia Ionescu-Kruse

    2011-06-20T23:59:59.000Z

    We present a new kind of particle path in constant vorticity water of finite depth, within the framework of small-amplitude waves.

  18. AHSS Stamping Project ? A/SP 050; Nonlinear Strain Paths Project...

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

    More Documents & Publications Nonlinear Strain Paths Advanced High-Strength Steel Stamping Characterization of Thermo-Mechanical Behaviors of Advanced High Strength Steels (AHSS)...

  19. E-Print Network 3.0 - automatic beam path Sample Search Results

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

    axis paths only... of obstacles is to some extent automat- ically accounted for, as beams are themselves of finite transverse... leads to "automatic" grouping of rays, which...

  20. Hydrogen molecule ion: Path-integral Monte Carlo approach

    SciTech Connect (OSTI)

    Kylaenpaeae, I.; Leino, M.; Rantala, T. T. [Institute of Physics, Tampere University of Technology, P.O. Box 692, FI-33101 Tampere (Finland)

    2007-11-15T23:59:59.000Z

    The path-integral Monte Carlo approach is used to study the coupled quantum dynamics of the electron and nuclei in hydrogen molecule ion. The coupling effects are demonstrated by comparing differences in adiabatic Born-Oppenheimer and nonadiabatic simulations, and inspecting projections of the full three-body dynamics onto the adiabatic Born-Oppenheimer approximation. Coupling of the electron and nuclear quantum dynamics is clearly seen. The nuclear pair correlation function is found to broaden by 0.040a{sub 0}, and the average bond length is larger by 0.056a{sub 0}. Also, a nonadiabatic correction to the binding energy is found. The electronic distribution is affected less than the nuclear one upon inclusion of nonadiabatic effects.

  1. A Multi-Path Interferometer on an Atom Chip

    E-Print Network [OSTI]

    Jovana Petrovic; Ivan Herrera; Pietro Lombardi; Francesco S. Cataliotti

    2011-11-18T23:59:59.000Z

    Cold-atom interferometry is a powerful tool for high-precision measurements of the quantum properties of atoms, many-body interactions and gravity. Further enhancement of sensitivity and reduction of complexity of these devices are crucial conditions for success of their applications. Here we introduce a multi-path interferometric scheme that offers advances in both these aspects. It uses coherent coupling between Bose-Einstein condensates in different Zeeman states to generate an interferometric signal with sharp fringes. We realise such an interferometer as a compact easy-to-use atom-chip device and thus provide an alternative method for measurement of the light-atom and surface-atom interactions.

  2. A Multi-Path Interferometer on an Atom Chip

    E-Print Network [OSTI]

    Petrovic, Jovana; Lombardi, Pietro; Cataliotti, Francesco S

    2011-01-01T23:59:59.000Z

    Cold-atom interferometry is a powerful tool for high-precision measurements of the quantum properties of atoms, many-body interactions and gravity. Further enhancement of sensitivity and reduction of complexity of these devices are crucial conditions for success of their applications. Here we introduce a multi-path interferometric scheme that offers advances in both these aspects. It uses coherent coupling between Bose-Einstein condensates in different Zeeman states to generate an interferometric signal with sharp fringes. We realise such an interferometer as a compact easy-to-use atom-chip device and thus provide an alternative method for measurement of the light-atom and surface-atom interactions.

  3. Path Integral Confined Dirac Fermions in a Constant Magnetic Field

    E-Print Network [OSTI]

    Abdeldjalil Merdaci; Ahmed Jellal; Lyazid Chetouani

    2014-04-17T23:59:59.000Z

    We consider Dirac fermion confined in harmonic potential and submitted to a constant magnetic field. The corresponding solutions of the energy spectrum are obtained by using the path integral techniques. For this, we begin by establishing a symmetric global projection, which provides a symmetric form for the Green function. Based on this, we show that it is possible to end up with the propagator of the harmonic oscillator for one charged particle. After some transformations, we derive the normalized wave functions and the eigenvalues in terms of different physical parameters and quantum numbers. By interchanging quantum numbers, we show that our solutions possed interesting properties. The density of current and the non-relativistic limit are analyzed where different conclusions are obtained.

  4. Modulated Tool-Path (MTP) Chip Breaking System

    SciTech Connect (OSTI)

    Graham, K. B.

    2010-04-01T23:59:59.000Z

    The Modulated Tool-Path (MTP) Chip Breaking System produces user-selectable chip lengths and workpiece finishes and is compatible with any material, workpiece shape, and depth of cut. The MTP chip breaking system consistently creates the desired size of chips regardless of workpiece size, shape, or material, and the machine operator does not need to make any adjustments during the machining operation. The system's programmer configures the part program that commands the machine tool to move in a specific fashion to deliver the desired part size, shape, chip length, and workpiece surface finish. The MTP chip breaking system helps manufacturers avoid the detrimental effects of continuous chips, including expensive repair costs, delivery delays, and hazards to personnel.

  5. Light absorption cell combining variable path and length pump

    DOE Patents [OSTI]

    Prather, William S. (2419 Dickey Rd., Augusta, GA 30906)

    1993-01-01T23:59:59.000Z

    A device for use in making spectrophotometric measurements of fluid samples. In particular, the device is a measurement cell containing a movable and a fixed lens with a sample of the fluid therebetween and through which light shines. The cell is connected to a source of light and a spectrophotometer via optic fibers. Movement of the lens varies the path length and also pumps the fluid into and out of the cell. Unidirectional inlet and exit valves cooperate with the movable lens to assure a one-way flow of fluid through the cell. A linear stepper motor controls the movement of the lens and cycles it from a first position closer to the fixed lens and a second position farther from the fixed lens, preferably at least 10 times per minute for a nearly continuous stream of absorption spectrum data.

  6. Light absorption cell combining variable path and length pump

    DOE Patents [OSTI]

    Prather, W.S.

    1993-12-07T23:59:59.000Z

    A device is described for use in making spectrophotometric measurements of fluid samples. In particular, the device is a measurement cell containing a movable and a fixed lens with a sample of the fluid there between and through which light shines. The cell is connected to a source of light and a spectrophotometer via optic fibers. Movement of the lens varies the path length and also pumps the fluid into and out of the cell. Unidirectional inlet and exit valves cooperate with the movable lens to assure a one-way flow of fluid through the cell. A linear stepper motor controls the movement of the lens and cycles it from a first position closer to the fixed lens and a second position farther from the fixed lens, preferably at least 10 times per minute for a nearly continuous stream of absorption spectrum data. 2 figures.

  7. Long-length contaminated equipment disposal process path document

    SciTech Connect (OSTI)

    McCormick, W.A.

    1998-09-30T23:59:59.000Z

    The first objective of the LLCE Process Path Document is to guide future users of this system on how to accomplish the cradle-to-grave process for the disposal of long-length equipment. Information will be provided describing the function and approach to each step in the process. Pertinent documentation, prerequisites, drawings, procedures, hardware, software, and key interfacing organizations will be identified. The second objective is related to the decision to lay up the program until funding is made available to complete it or until a need arises due to failure of an important component in a waste tank. To this end, the document will identify work remaining to be completed for each step of the process and open items or issues that remain to be resolved.

  8. Dynamics of assembly production flow

    E-Print Network [OSTI]

    Ezaki, Takahiro; Nishinari, Katsuhiro

    2015-01-01T23:59:59.000Z

    Despite recent developments in management theory, maintaining a manufacturing schedule remains difficult because of production delays and fluctuations in demand and supply of materials. The response of manufacturing systems to such disruptions to dynamic behavior has been rarely studied. To capture these responses, we investigate a process that models the assembly of parts into end products. The complete assembly process is represented by a directed tree, where the smallest parts are injected at leaves and the end products are removed at the root. A discrete assembly process, represented by a node on the network, integrates parts, which are then sent to the next downstream node as a single part. The model exhibits some intriguing phenomena, including overstock cascade, phase transition in terms of demand and supply fluctuations, nonmonotonic distribution of stockout in the network, and the formation of a stockout path and stockout chains. Surprisingly, these rich phenomena result from only the nature of distr...

  9. Paving the path for next-generation nuclear energy | Department...

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

    heat that could be used for industrial processes such as seawater desalination or plastics production. Today, China has begun construction of a prototype Generation-IV reactor,...

  10. inequality path inequality path

    E-Print Network [OSTI]

    Skogestad, Sigurd

    F #12; ¬° ¬° ¬® ¬£ ¬Ę ¬•¬Ę ¬° ¬°¬Ę ¬° ¬£ ¬£ ¬§ ¬Ę ¬© ¬§ ¬• ¬¶¬®¬ß ¬Ę ¬§ ¬© ¬£ ¬Ę ¬° ¬§ ¬° ¬§ ¬Ę ¬© ¬Ę ¬§ ¬§ ¬£ ¬§ ¬Ę ¬° ¬¶ S-PVC; ¬°¬Ę ¬¶ ¬£¬§ ¬¶ ¬§ ¬§ ¬° ¬Ę ¬§ ¬Ę ¬© ¬° ¬Ę ¬¶ ¬° ¬Ę ¬• ¬© ¬ß ¬Ę ¬£¬§ ¬© ¬° ¬°¬Ę ¬° ¬£ ¬ß¬® ¬® $ S-PVC suspension F TC Theat 90C 50C o o (ii) (i) Fsteam cw ¬ß¬® ¬® $ $ S-PVC suspension TC T 50C o susp F Fcw steam ¬ß¬® ¬® $ $ $ S-PVC suspension TC T 50C o susp z=0 Fsteam Fcw #12

  11. Zero discounting and optimal paths of depletion of an exhaustible resource with an

    E-Print Network [OSTI]

    Boyer, Edmond

    ...le of the optimal paths. We show that, in the Cobb-Douglas case, the ratio of the values of the resource and capitalZero discounting and optimal paths of depletion of an exhaustible resource with an amenity value Dasgupta≠Heal≠Solow model when the stock of natural capital is a direct argument of well-being, besides

  12. On the complexity of hamiltonian path and cycle problems in certain classes of digraphs

    E-Print Network [OSTI]

    Gutin, Gregory

    -Jensen Gregory Gutin Abstract We survey results on the sequential and parallel complexity of hamiltonian path results on hamiltonian paths starting in a specified vertex for a quite general class of digraphs. 1 in Rostock, September 8-10 1997. The purpose of the paper is to survey results on the complexity

  13. Coordinated Computation of Multi-layer Paths via Inter-layer PCE Communication: Standards,

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    Coordinated Computation of Multi-layer Paths via Inter-layer PCE Communication: Standards Lab, Spain Email: {xmasip, yannuzzi}@ac.upc.edu Abstract--The Path Computation Element (PCE) is positioned nowadays as one of the solutions that almost every carrier will eventually deploy. The PCE

  14. Paths and Kostka-Macdonald Polynomials Anatol N. KIRILLOV and Reiho SAKAMOTO

    E-Print Network [OSTI]

    RIMS-1654 Paths and Kostka-Macdonald Polynomials By Anatol N. KIRILLOV and Reiho SAKAMOTO February 2009 RESEARCH INSTITUTE FOR MATHEMATICAL SCIENCES KYOTO UNIVERSITY, Kyoto, Japan #12;Paths and Kostka­Macdonald­Ball systems, Kostka­Macdonald polynomials. 1 #12;1 Introduction The purpose of the present paper is two

  15. Quantum free-energy differences from nonequilibrium path integrals. II. Convergence properties for the harmonic oscillator

    E-Print Network [OSTI]

    Schofield, Jeremy

    Quantum free-energy differences from nonequilibrium path integrals. II. Convergence properties July 2008; published 2 October 2008 Nonequilibrium path-integral methods for computing quantum free-energy with the purpose of establishing the convergence properties of the work distribution and free energy as the number

  16. Testing Oil Saturation Distribution in Migration Paths Using MRI1 Jianzhao Yan 1

    E-Print Network [OSTI]

    Paris-Sud XI, Universitť de

    - 1 - Testing Oil Saturation Distribution in Migration Paths Using MRI1 Jianzhao Yan 1 , Xiaorong media, and to measure oil and water saturation. Although this technique has great advantages compared14. Using15 MRI, the oil secondary migration paths are scanned to measure the saturation distribution during

  17. INVESTIGATION OF THE PERFORMANCE OF EP-BAVP (EVOLUTIONARY PROGRAMMING FOR VIRTUAL PATH

    E-Print Network [OSTI]

    Pitsillides, Andreas

    INVESTIGATION OF THE PERFORMANCE OF EP-BAVP (EVOLUTIONARY PROGRAMMING FOR VIRTUAL PATH BANDWIDTH investigate the usefulness of an evolutionary programming (EP) optimization algorithm for tackling the problem of Bandwidth Allocation for Virtual Paths (EP-BAVP). Results for two network topologies obtained with EP

  18. Path planning for UAVs under communication constraints using SPLAT! and MILP

    E-Print Network [OSTI]

    Johansen, Tor Arne

    -rescue tasks [3]. In general, autonomous vehicles are chosen for tasks that are either dirty, dull or dangerous will in this paper address the problem of offline path planning for Unmanned Aerial Vehicles (UAVs). Our goal is to find paths that meet mission objectives, are safe with respect to collision and grounding, fuel

  19. Geodesic Paths on Triangular Meshes DIMAS MARTINEZ, LUIZ VELHO, PAULO CEZAR CARVALHO

    E-Print Network [OSTI]

    Geodesic Paths on Triangular Meshes DIMAS MART¬īINEZ, LUIZ VELHO, PAULO CEZAR CARVALHO IMPA dimasmm,lvelho,pcezar @visgraf.impa.br Abstract. We present a new algorithm to compute a geodesic path Geodesics theory, we are able to generate an iterative process to obtain a good discrete geodesic

  20. The Heavy Ion Fusion Virtual National Laboratory The Heavy Ion Path to Fusion Energy

    E-Print Network [OSTI]

    -consistent power plant design for a multi- beam induction linac, final focus and chamber propagationThe Heavy Ion Fusion Virtual National Laboratory The Heavy Ion Path to Fusion Energy Grant Logan Director Heavy-Ion Fusion Virtual National Laboratory Presented to FESAC Workshop on Development Paths

  1. On Setting up Energy-Efficient Paths with Transmitter Power Control

    E-Print Network [OSTI]

    Lyu, Michael R.

    On Setting up Energy-Efficient Paths with Transmitter Power Control in Wireless Sensor Networks Science Simon Fraser University Vancouver, Canada Email: jcliu@cs.sfu.ca Abstract-- Energy-efficiency could find a more energy-efficient path to the sink. We provide an efficient approximation algorithm

  2. A Hamilton Path Heuristic with Applications to the Middle Two Levels Problem

    E-Print Network [OSTI]

    Savage, Carla D.

    A Hamilton Path Heuristic with Applications to the Middle Two Levels Problem Ian Shields IBM P is to find a Hamilton cycle in the middle two levels, M 2k+1 , of the Hasse diagram of B 2k+1 (the partially. We show that if a Hamilton path between two distinguished vertices exists in a reduced graph

  3. Design Technical Brief A Geometric Path Planner for Car-like

    E-Print Network [OSTI]

    Deng, Jiansong

    Journal of Mechanical Design Technical Brief A Geometric Path Planner for Car-like Robots Shiang a refined slabbing method, originally used for free-flying robots, for finding efficient paths for nonholo- nomic robots. Our method takes kinematic constraints and rever- sal maneuvers into account. We create

  4. Energy-Aware Path Selection for Scheduled Lightpaths in IP-over-WDM Networks

    E-Print Network [OSTI]

    Kuipers, Fernando A.

    Energy-Aware Path Selection for Scheduled Lightpaths in IP-over-WDM Networks Song Yang and Fernando in the context of energy-aware routing. In this paper we study energy-efficient path selection under propose an energy-aware routing algorithm that is based on traffic grooming, but which has the flexibility

  5. Path Planning for Deformable Linear Objects Mark Moll, Member, IEEE and Lydia E. Kavraki, Member, IEEE

    E-Print Network [OSTI]

    Kavraki, Lydia E.

    -like robots. Index Terms-- path planning, deformation, minimal-energy curves, modeling, differential geometry of a wire subject to manipulation constraints. These configurations correspond to minimal-energy curves. By restricting the planner to minimal-energy curves, the execution of a path becomes easier. Our curve

  6. On the current conditions along the Ormen Lange pipeline path during an extreme, idealized storm

    E-Print Network [OSTI]

    Avlesen, Helge

    On the current conditions along the Ormen Lange pipeline path during an extreme, idealized storm-shore for processing by means of a pipeline. Due to the abrupt topography this pipeline will have many long free spans along a possible path for the pipeline, and in a simulation study the effects on the flow due

  7. Integrated Control-Path Design and Error Recovery in the Synthesis of Digital

    E-Print Network [OSTI]

    Chakrabarty, Krishnendu

    11 Integrated Control-Path Design and Error Recovery in the Synthesis of Digital Microfluidic Lab-on-Chip YANG ZHAO, TAO XU, and KRISHNENDU CHAKRABARTY Duke University Recent advances in digital microfluidics that incorporates control paths and an error- recovery mechanism in the design of a digital microfluidic lab

  8. iPlane Nano: Path Prediction for Peer-to-Peer Applications Harsha V. Madhyastha

    E-Print Network [OSTI]

    Krishnamurthy, Arvind

    iPlane Nano: Path Prediction for Peer-to-Peer Applications Harsha V. Madhyastha Ethan Katz present the design and implementa- tion of iPlane Nano, a library for delivering Internet path information to peer-to-peer applications. iPlane Nano is itself a peer-to-peer application, and scales to a large

  9. Optimization of a Dedicated Path Protected TDM/WDM PetaWeb

    E-Print Network [OSTI]

    Secci, Stefano

    Optimization of a Dedicated Path Protected TDM/WDM PetaWeb Architecture Stefano Secci , Brunilde.sanso@polymtl.ca Abstract This paper deals with the insertion of a dedicated path protection strat- egy in the design bit/s). Prior stud- ies of the same authors have tackled the optimization of a PetaWeb network

  10. The definition of reaction coordinates for reaction-path dynamics Gregory A. Natanson

    E-Print Network [OSTI]

    Truong, Thanh N.

    The definition of reaction coordinates for reaction-path dynamics Gregory A. Natanson Computer only small-amplitude deviations from a minimum-energy path (MEP) through nuclear coordinate space. Thus. In choosing the coordinate system, the critical issue is the definition of the reaction coordinate. Along

  11. Spin-neurons: A possible path to energy-efficient neuromorphic computers

    SciTech Connect (OSTI)

    Sharad, Mrigank; Fan, Deliang; Roy, Kaushik [School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907 (United States)] [School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907 (United States)

    2013-12-21T23:59:59.000Z

    Recent years have witnessed growing interest in the field of brain-inspired computing based on neural-network architectures. In order to translate the related algorithmic models into powerful, yet energy-efficient cognitive-computing hardware, computing-devices beyond CMOS may need to be explored. The suitability of such devices to this field of computing would strongly depend upon how closely their physical characteristics match with the essential computing primitives employed in such models. In this work, we discuss the rationale of applying emerging spin-torque devices for bio-inspired computing. Recent spin-torque experiments have shown the path to low-current, low-voltage, and high-speed magnetization switching in nano-scale magnetic devices. Such magneto-metallic, current-mode spin-torque switches can mimic the analog summing and ďthresholdingĒ operation of an artificial neuron with high energy-efficiency. Comparison with CMOS-based analog circuit-model of a neuron shows that ďspin-neuronsĒ (spin based circuit model of neurons) can achieve more than two orders of magnitude lower energy and beyond three orders of magnitude reduction in energy-delay product. The application of spin-neurons can therefore be an attractive option for neuromorphic computers of future.

  12. Parasitic Effects of Grounding Paths on Common-Mode EMI Filter's Performance in Power Electronics Systems

    SciTech Connect (OSTI)

    Wang, Shuo [ORNL; Maillet, Yoann [Virginia Polytechnic Institute and State University (Virginia Tech); Wang, Fei [ORNL; Lai, Rixin [General Electric; Luo, Fang [Virginia Polytechnic Institute and State University (Virginia Tech); Boroyevich, Dushan [Virginia Polytechnic Institute and State University (Virginia Tech)

    2010-01-01T23:59:59.000Z

    High-frequency common-mode (CM) electromagnetic-interference (EMI) noise is difficult to suppress in electronics systems. EMI filters are used to suppress CM noise, but their performance is greatly affected by the parasitic effects of the grounding paths. In this paper, the parasitic effects of the grounding paths on an EMI filter's performance are investigated in a motor-drive system. The effects of the mutual inductance between two grounding paths are explored. Guidelines for the grounding of CM EMI filters are derived. Simulations and experiments are finally carried out to verify the theoretical analysis.

  13. Local representation of N-body Coulomb energy with path integrals

    E-Print Network [OSTI]

    Takanori Sugihara; Junichi Higo; Haruki Nakamura

    2014-04-18T23:59:59.000Z

    We represent N-body Coulomb energy in a localized form to achieve massive parallelism. It is a well-known fact that Green's functions can be written as path integrals of field theory. Since two-body Coulomb potential is a Green's function of Poisson equations, it reduces to a path integral of free scalar field theory with three spatial dimensions. This means that N-body one also reduces to a path integral. We discretize real space with a cubic lattice and evaluate the obtained multiple integrals approximately with the Markov-chain Monte Carlo method.

  14. Maximum Entropy Models of Shortest Path and Outbreak Distributions in Networks

    E-Print Network [OSTI]

    Bauckhage, Christian; Hadiji, Fabian

    2015-01-01T23:59:59.000Z

    Properties of networks are often characterized in terms of features such as node degree distributions, average path lengths, diameters, or clustering coefficients. Here, we study shortest path length distributions. On the one hand, average as well as maximum distances can be determined therefrom; on the other hand, they are closely related to the dynamics of network spreading processes. Because of the combinatorial nature of networks, we apply maximum entropy arguments to derive a general, physically plausible model. In particular, we establish the generalized Gamma distribution as a continuous characterization of shortest path length histograms of networks or arbitrary topology. Experimental evaluations corroborate our theoretical results.

  15. 20TH INTERNATIONAL PRODUCT DEVELOPMENT MANAGEMENT CONFERENCE PARIS, FRANCE, JUNE 23-25, 2013

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    often launch exploration projects (EP) aiming at developing innovative products (or services, because exploration projects precisely aim to invent products (or services) that do not exist before the exploration process (i.e. identifying design rules to break, managing two kind of design paths

  16. Implications of the FESAC Fusion Development Path Study for

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    Study The goal of the plan is operation of a US demonstration power plant (Demo), which will enable electric power production, and ultimately it will demonstrate the commercial practicality of fusion power Studies 47 MFE Detail and Dependencies Theory, Simulation and Basic Plasma Science MST & NSTX 2nd New MFE

  17. Networks in Buildings: Which Path Environmental Energy Technologies Division

    E-Print Network [OSTI]

    modest use in consumer electronics, security, and large building control systems. The next 20 years markets. Key future networks are lighting, climate control, and security/presence. This paper reviews some, product, or process disclosed, or represents that its use would not infringe privately owned rights

  18. Electron mean free path from angle-dependent photoelectron spectroscopy of aerosol particles

    E-Print Network [OSTI]

    Goldmann, Maximilian; West, Adam H C; Yoder, Bruce L; Signorell, Ruth

    2015-01-01T23:59:59.000Z

    We propose angle-resolved photoelectron spectroscopy of aerosol particles as an alternative way to determine the electron mean free path of low energy electrons in solid and liquid materials. The mean free path is obtained from fits of simulated photoemission images to experimental ones over a broad range of different aerosol particle sizes. The principal advantage of the aerosol approach is twofold. Firstly, aerosol photoemission studies can be performed for many different materials, including liquids. Secondly, the size-dependent anisotropy of the photoelectrons can be exploited in addition to size-dependent changes in their kinetic energy. These finite size effects depend in different ways on the mean free path and thus provide more information on the mean free path than corresponding liquid jet, thin film, or bulk data. The present contribution is a proof of principle employing a simple model for the photoemission of electrons and preliminary experimental data for potassium chloride aerosol particles.

  19. E-Print Network 3.0 - adaptive paths give Sample Search Results

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

    Picture-perfect Streaming on the Internet Alix L.H. Chow Summary: by adapting the load distribution on the different paths (e.g., by send- ing less data on the more...

  20. Calculation of heat capacities of light and heavy water by path-integral molecular dynamics

    E-Print Network [OSTI]

    Nielsen, Steven O.

    Calculation of heat capacities of light and heavy water by path-integral molecular dynamics-integral molecular dynamics has been used to calculate the constant-volume heat capacities of light and heavy water

  1. Sketch-Based Path Design James McCrae Karan Singh

    E-Print Network [OSTI]

    Toronto, University of

    unexplored. These shape modeling interfaces [18, 31], Google SketchUp, are not suitable for conceptual path of flora and fauna [2] and architectural environments, such as Google SketchUp. The area of sketch

  2. Slip-Compensated Path Following for Planetary Exploration Daniel M. Helmick, Stergios I. Roumeliotis

    E-Print Network [OSTI]

    Waliser, Duane E.

    estimator, and a slip-compensated path following algorithm. Figure 2 provides a high-level functional block kinematics, described in Section 3, uses position sensor inputs from the joints and wheels of the rocker

  3. Efficient Computation of Shortest Path-Concavity for 3D Meshes Henrik Zimmer

    E-Print Network [OSTI]

    Kobbelt, Leif

    -wide distributions of measures are needed to accu- rately evaluate and compare local regions of shapes. Lien et al between mesh and convex hull, thereby reducing the continuous Shortest Path search to an effi- ciently

  4. Sampling-based coverage path planning for complex 3D structures

    E-Print Network [OSTI]

    Englot, Brendan J

    2012-01-01T23:59:59.000Z

    Path planning is an essential capability for autonomous robots, and many applications impose challenging constraints alongside the standard requirement of obstacle avoidance. Coverage planning is one such task, in which a ...

  5. CFD based rotordynamic coefficients for labyrinth seals and impeller leakage paths

    E-Print Network [OSTI]

    Bhattacharya, Avijit

    1997-01-01T23:59:59.000Z

    accurately using simple flow model like bulk flow. CFD approach is employed since it can accurately predict and capture recirculating zones using proper mesh distribution. The Impeller Leakage paths and Labyrinth Seals, typically, have a recirculation zone...

  6. THE ONE CLASS SUPPORT VECTOR MACHINE SOLUTION PATH Gyemin Lee and Clayton D. Scott

    E-Print Network [OSTI]

    Scott, Clayton

    THE ONE CLASS SUPPORT VECTOR MACHINE SOLUTION PATH Gyemin Lee and Clayton D. Scott Department that encloses a pre-speci ed probability mass of the distribution from which data are observed. Such sets

  7. Analysis of Path Planning Algorithms : a Formal Verification-based Approach Arash Khabbaz Saberi1

    E-Print Network [OSTI]

    Groote, Jan Friso

    Analysis of Path Planning Algorithms : a Formal Verification-based Approach Arash Khabbaz Saberi1, The Netherlands a.khabbaz.saberi@student.tue.nl, j.f.groote@tue.nl, s.keshishzadeh@tue.nl Abstract

  8. Programmed path : the conceptual re-enactment of a Charlestown warehouse and dock

    E-Print Network [OSTI]

    Reeves, Sarah Rundquist

    2009-01-01T23:59:59.000Z

    Conceptually re-defining the role of a 100-year-old waterfront brick and timber warehouse structure, it is turned inside-out : interior becomes path. Programmatic functions imitate the physical characteristics of a conceptual ...

  9. Economic freedom in Muslim countries: an explanation using the theory of institutional path dependency

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Economic freedom in Muslim countries: an explanation using the theory of institutional path dependency Abstract. This article explains the level of economic freedom in Muslim countries through, on the world of institutional possibilities. Keywords Economic freedom, colonisation, imaginary, Islam

  10. Constructing Path Efficient and Energy Aware Virtual Multicast Backbones in Static Ad Hoc Wireless Networks

    E-Print Network [OSTI]

    Acharya, Tamaghna; Roy, Rajarshi; 10.5121/ijwmn.2010.2210

    2010-01-01T23:59:59.000Z

    For stationary wireless ad hoc networks, one of the key challenging issues in routing and multicasting is to conserve as much energy as possible without compromising path efficiency measured as end-to-end delay. In this paper, we address the problem of path efficient and energy aware multicasting in static wireless ad hoc networks. We propose a novel distributed scalable algorithm for finding a virtual multicast backbone (VMB). Based on this VMB, we have further developed a multicasting scheme that jointly improves path efficiency and energy conservation. By exploiting inherent broadcast advantage of wireless communication and employing a more realistic energy consumption model for wireless communication which not only depends on radio propagation losses but also on energy losses in transceiver circuitry, our simulation results show that the proposed VMB-based multicasting scheme outperforms existing prominent tree based energy conserving, path efficient multicasting schemes.

  11. E-Print Network 3.0 - autonomous path planning Sample Search...

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

    Search Powered by Explorit Topic List Advanced Search Sample search results for: autonomous path planning Page: << < 1 2 3 4 5 > >> 1 A U.S. Air Force Predator is ready for a...

  12. PATH SAMPLING FOR PARTICLE FILTERS WITH APPLICATION TO MULTI-TARGET TRACKING

    E-Print Network [OSTI]

    for the particle filter is a problem of conditional path sam- pling for stochastic differential equations (SDEs-target tracking. The suggested approach was based on Girsanov's change of measure theorem for stochastic dif

  13. Next Generation Nuclear Plant Project Technology Development Roadmaps: The Technical Path Forward

    SciTech Connect (OSTI)

    John Collins

    2009-01-01T23:59:59.000Z

    This document presents the Next Generation Nuclear Plant (NGNP) Systems, Subsystems, and Components, establishes a baseline for the current technology readiness status, and provides a path forward to achieve increasing levels of technical maturity.

  14. Common-path interference and oscillatory Zener tunneling in bilayer graphene p-n junctions

    E-Print Network [OSTI]

    Nandkishore, Rahul Mahajan

    Interference and tunneling are two signature quantum effects that are often perceived as the yin and yang of quantum mechanics: a particle simultaneously propagating along several distinct classical paths versus a particle ...

  15. Path integral formulation of retardation effects in nonlinear optics Vladimir Chernyaka) and Shaul Mukamel

    E-Print Network [OSTI]

    Mukamel, Shaul

    Path integral formulation of retardation effects in nonlinear optics Vladimir Chernyaka) and Shaul;accepted4 October 1993) The signaturesof retardation in nonlinear optical susceptibilitiesare studiedby optical signalsare usually'calculatedby first calculating a nonlinear susceptibility definedby expanding

  16. Conceptual Soundness, Metric Development, Benchmarking, and Targeting for PATH Subprogram Evaluation

    SciTech Connect (OSTI)

    Mosey. G.; Doris, E.; Coggeshall, C.; Antes, M.; Ruch, J.; Mortensen, J.

    2009-01-01T23:59:59.000Z

    The objective of this study is to evaluate the conceptual soundness of the U.S. Department of Housing and Urban Development (HUD) Partnership for Advancing Technology in Housing (PATH) program's revised goals and establish and apply a framework to identify and recommend metrics that are the most useful for measuring PATH's progress. This report provides an evaluative review of PATH's revised goals, outlines a structured method for identifying and selecting metrics, proposes metrics and benchmarks for a sampling of individual PATH programs, and discusses other metrics that potentially could be developed that may add value to the evaluation process. The framework and individual program metrics can be used for ongoing management improvement efforts and to inform broader program-level metrics for government reporting requirements.

  17. Comments on the Meehl-Waller procedure for appraisal of path analysis models

    E-Print Network [OSTI]

    MacCallum, R. C.; Browne, M. W.; Preacher, K. J.

    2002-01-01T23:59:59.000Z

    P. E. Meehl and N. G. Waller (2002) proposed an innovative method for assessing path analysis models wherein they subjected a given model, along with a set of alternatives, to risky tests using selected elements of a sample ...

  18. Non-Born-Oppenheimer path in anti-Hermitian dynamics for nonadiabatic transitions

    SciTech Connect (OSTI)

    Takatsuka, Kazuo [Department of Basic Science, The University of Tokyo, Komaba, 153-8902 Tokyo (Japan)

    2006-02-14T23:59:59.000Z

    A serious difficulty in the semiclassical Ehrenfest theory for nonadiabatic transitions is that a path passing across the avoided crossing is forced to run on a potential averaged over comprising adiabatic potential surfaces that commit the avoided crossing. Therefore once a path passes through the crossing region, it immediately becomes incompatible with the standard view of 'classical trajectory' running on an adiabatic surface. This casts a fundamental question to the theoretical structure of chemical dynamics. In this paper, we propose a non-Born-Oppenheimer path that is generated by an anti-Hermitian Hamiltonian, whose complex-valued eigenenergies can cross in their real parts and avoid crossing in the imaginary parts in the vicinity of the nonadiabatic transition region. We discuss the properties of this non-Born-Oppenheimer path and thereby show its compatibility with the Born-Oppenheimer classical trajectories. This theory not only allows the geometrical branching of the paths but gives the nonadiabatic transition amplitudes and quantum phases along the generated paths.

  19. Phase Formation and Transformations in Transmutation Fuel Materials for the LIFE Engine Part I - Path Forward

    SciTech Connect (OSTI)

    Turchi, P E; Kaufman, L; Fluss, M J

    2008-11-10T23:59:59.000Z

    The current specifications of the LLNL fusion-fission hybrid proposal, namely LIFE, impose severe constraints on materials, and in particular on the nuclear fissile or fertile nuclear fuel and its immediate environment. This constitutes the focus of the present report with special emphasis on phase formation and phase transformations of the transmutation fuel and their consequences on particle and pebble thermal, chemical and mechanical integrities. We first review the work that has been done in recent years to improve materials properties under the Gen-IV project, and with in particular applications to HTGR and MSR, and also under GNEP and AFCI in the USA. Our goal is to assess the nuclear fuel options that currently exist together with their issues. Among the options, it is worth mentioning TRISO, IMF, and molten salts. The later option will not be discussed in details since an entire report is dedicated to it. Then, in a second part, with the specific LIFE specifications in mind, the various fuel options with their most critical issues are revisited with a path forward for each of them in terms of research, both experimental and theoretical. Since LIFE is applicable to very high burn-up of various fuels, distinctions will be made depending on the mission, i.e., energy production or incineration. Finally a few conclusions are drawn in terms of the specific needs for integrated materials modeling and the in depth knowledge on time-evolution thermochemistry that controls and drastically affects the performance of the nuclear materials and their immediate environment. Although LIFE demands materials that very likely have not yet been fully optimized, the challenge are not insurmountable and a well concerted experimental-modeling effort should lead to dramatic advances that should well serve other fission programs such as Gen-IV, GNEP, AFCI as well as the international fusion program, ITER.

  20. FESAC White Paper Path to Market for Compact Systems July 2012 The Path to Market for Compact Modular Fusion Power Cores1

    E-Print Network [OSTI]

    in government science programs, then advanced towards the market place by the private sector when: Market, Path, and Compact Fusion Systems. US Electricity Market "Electricity demand (including retail. " EIAAnnual Outlook June 2012 Due to the slowing of the growth in demand for new electricity generation

  1. Product Demonstrations

    Broader source: Energy.gov [DOE]

    The Consortium will pursue a number of demonstrations following the general procedure used by DOE's GATEWAY demonstration program. Specific products to be featured in a demonstration may be...

  2. The path from Hoshin Kanri to True North.

    SciTech Connect (OSTI)

    Galaviz, Maria Esther; McCaughey, Kathleen G.

    2010-08-01T23:59:59.000Z

    This year completed our 5th cycle of Hoshin Kanri. It has provided a way to summarize our annual strategic planning outcome in a simple format,and a great means to communicate it to employees. It has increased everyone's understanding of the Center's vision and true north. Every employee understands how their work contributes to the Center's success. It has increased focus and alignment in the organization and has increased ESat results with regards to improved alighment. It has tripled the number of shipments and increased productivity by 175% in 7 years.

  3. A Path to More Sustainable Transportation | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up from theDepartment(October-DecemberBasedToward a More Secure andMotors Athe ProductA

  4. Savannah River Site production reactor technical specifications. K Production Reactor

    SciTech Connect (OSTI)

    NONE

    1996-02-01T23:59:59.000Z

    These technical specifications are explicit restrictions on the operation of the Savannah River Site K Production Reactor. They are designed to preserve the validity of the plant safety analysis by ensuring that the plant is operated within the required conditions bounded by the analysis, and with the operable equipment that is assumed to mitigate the consequences of an accident. Technical specifications preserve the primary success path relied upon to detect and respond to accidents. This report describes requirements on thermal-hydraulic limits; limiting conditions for operation and surveillance for the reactor, power distribution control, instrumentation, process water system, emergency cooling and emergency shutdown systems, confinement systems, plant systems, electrical systems, components handling, and special test exceptions; design features; and administrative controls.

  5. MARMOSET: The Path from LHC Data to the New Standard Model via On-Shell Effective Theories

    SciTech Connect (OSTI)

    Arkani-Hamed, Nima; Schuster, Philip; Toro, Natalia; /Harvard U., Phys. Dept.; Thaler, Jesse; /UC, Berkeley /LBL, Berkeley; Wang, Lian-Tao; /Princeton U.; Knuteson, Bruce; /MIT, LNS; Mrenna, Stephen; /Fermilab

    2007-03-01T23:59:59.000Z

    We describe a coherent strategy and set of tools for reconstructing the fundamental theory of the TeV scale from LHC data. We show that On-Shell Effective Theories (OSETs) effectively characterize hadron collider data in terms of masses, production cross sections, and decay modes of candidate new particles. An OSET description of the data strongly constrains the underlying new physics, and sharply motivates the construction of its Lagrangian. Simulating OSETs allows efficient analysis of new-physics signals, especially when they arise from complicated production and decay topologies. To this end, we present MARMOSET, a Monte Carlo tool for simulating the OSET version of essentially any new-physics model. MARMOSET enables rapid testing of theoretical hypotheses suggested by both data and model-building intuition, which together chart a path to the underlying theory. We illustrate this process by working through a number of data challenges, where the most important features of TeV-scale physics are reconstructed with as little as 5 fb{sup -1} of simulated LHC signals.

  6. Autothermal production of synthesis gas

    SciTech Connect (OSTI)

    Lewis, J.L.

    1987-05-19T23:59:59.000Z

    An autothermal reactor is described for the production of a synthesis gas in which both primary reforming and secondary reforming are achieved at a high level of efficiency. The method comprises a heat exchange chamber having a first portion and a second portion, a first inlet connected to the heat exchange chamber for the introduction of steam and feed gas to the heat exchange chamber, reaction tubes mounted within the first portion of the heat exchanger chamber at a location spaced longitudinally from the first inlet in communication with the first inlet and in non-concentric relationship therewith so as to provide a flow path for the steam and feed gas from the first inlet through the plurality of reaction tubes.

  7. A collaborative network middleware project by Lambda Station, TeraPaths, and Phoebus

    SciTech Connect (OSTI)

    Bobyshev, A.; /Fermilab; Bradley, S.; /Brookhaven; Crawford, M.; /Fermilab; DeMar, P.; /Fermilab; Katramatos, D.; /Brookhaven; Shroff, K.; /Brookhaven; Swany, M.; /Delaware U.; Yu, D.; /Brookhaven

    2010-01-01T23:59:59.000Z

    The TeraPaths, Lambda Station, and Phoebus projects, funded by the US Department of Energy, have successfully developed network middleware services that establish on-demand and manage true end-to-end, Quality-of-Service (QoS) aware, virtual network paths across multiple administrative network domains, select network paths and gracefully reroute traffic over these dynamic paths, and streamline traffic between packet and circuit networks using transparent gateways. These services improve network QoS and performance for applications, playing a critical role in the effective use of emerging dynamic circuit network services. They provide interfaces to applications, such as dCache SRM, translate network service requests into network device configurations, and coordinate with each other to setup up end-to-end network paths. The End Site Control Plane Subsystem (ESCPS) builds upon the success of the three projects by combining their individual capabilities into the next generation of network middleware. ESCPS addresses challenges such as cross-domain control plane signalling and interoperability, authentication and authorization in a Grid environment, topology discovery, and dynamic status tracking. The new network middleware will take full advantage of the perfSONAR monitoring infrastructure and the Inter-Domain Control plane efforts and will be deployed and fully vetted in the Large Hadron Collider data movement environment.

  8. Hydrogen Production

    Fuel Cell Technologies Publication and Product Library (EERE)

    This 2-page fact sheet provides a brief introduction to hydrogen production technologies. Intended for a non-technical audience, it explains how different resources and processes can be used to produ

  9. Three path interference using nuclear magnetic resonance: a test of the consistency of Born's rule

    E-Print Network [OSTI]

    Daniel K. Park; Osama Moussa; Raymond Laflamme

    2012-07-10T23:59:59.000Z

    The Born rule is at the foundation of quantum mechanics and transforms our classical way of understanding probabilities by predicting that interference occurs between pairs of independent paths of a single object. One consequence of the Born rule is that three way (or three paths) quantum interference does not exist. In order to test the consistency of the Born rule, we examine detection probabilities in three path intereference using an ensemble of spin-1/2 quantum registers in liquid state nuclear magnetic resonance (LSNMR). As a measure of the consistency, we evaluate the ratio of three way interference to two way interference. Our experiment bounded the ratio to the order of $10^{-3} \\pm 10^{-3}$, and hence it is consistent with Born's rule.

  10. Community of Practice: A Path to Strategic Learning

    SciTech Connect (OSTI)

    Nancy M. Carlson

    2003-04-01T23:59:59.000Z

    To explore the concept of community of practice, the research initially concentrates on a strategic business process in a research and applied engineering laboratory discovering essential communication tools and processes needed to cultivate a high functioning cross-disciplinary team engaged in proposal preparation. Qualitative research in the human ecology of the proposal process blends topic-oriented ethnography and grounded theory and includes an innovative addition to qualitative interviewing, called meta-inquiry. Meta-inquiry uses an initial interview protocol with a homogeneous pool of informants to enhance the researcher's sensitivity to the unique cultures involved in the proposal process before developing a formal interview protocol. In this study the preanalysis process uses data from editors, graphic artists, text processors, and production coordinators to assess, modify, enhance, and focus the formal interview protocol with scientists, engineers, and technical managers-the heterogeneous informants. Thus this human ecology-based interview protocol values homogeneous and heterogeneous informant data and acquires data from which concepts, categories, properties, and both substantive and formal theory emerges. The research discovers the five essential processes of owning, visioning, reviewing, producing, and contributing for strategic learning to occur in a proposal community of practice. The apprenticeship, developmental, and nurturing perspectives of adult learning provide the proposal community of practice with cohesion, interdependence, and caring, while core and boundary practices provide insight into the tacit and explicit dimensions of the proposal process. By making these dimensions explicit, the necessary competencies, absorptive capacity, and capabilities needed for strategic learning are discovered. Substantive theory emerges and provides insight into the ability of the proposal community of practice to evolve, flourish, and adapt to the strategic advantage of the laboratory. The substantive theory explores the dimensions of owning, visioning, reviewing, producing, and contributing and their interrelationship to community learning dynamics. Through dialogue, creative tension, and imagination, the proposal community of practice focuses on actionable goals linked by proactively participating in practice, creating possibilities, evaluating and enhancing potential, producing a valued product, and confirming strategic value. Lastly, a formal theory emerges linking competency-capacity-capability, cohesion, interdependence, and caring as essential attributes of strategic learning communities.

  11. Equatorial spread {ital F} effects on an HF path: Doppler spread, spatial coherence, and frequency coherence

    SciTech Connect (OSTI)

    Fitzgerald, T.J.; Argo, P.E.; Carlos, R.C. [Los Alamos National Laboratory, Los Alamos, New Mexico (United States)] [Los Alamos National Laboratory, Los Alamos, New Mexico (United States)

    1999-01-01T23:59:59.000Z

    In August 1990 we participated in the Equatorial Ionospheric Studies sounding rocket campaign near Kwajalein Atoll in the equatorial Pacific region. The campaign included measurements of plasma density using rocket probes and coherent and incoherent scatter radar. During the campaign we fielded high-frequency ionospheric sounders over a bistatic path between Maloelap Atoll and Bikini Atoll in the Marshall Islands. The distance between the transmitters and receivers was 700 km; the ionospheric-reflection region was at 10.18; {degree}N, 168.40;{degree}E, near the magnetic equator. We made three types of measurements: Doppler spread and spatial coherence for a single-frequency CW path; frequency coherence of multiple CW paths; and Doppler spread and time-delay spread for a 60-kHz bandwidth path. We obtained such data over a period of 2 weeks for approximately 2 hours each evening; during this period spread {ital F} was common. Fifty percent of the evenings showed Doppler spread of greater than 6 Hz at the {minus}10 dB level (relative to the peak signal power) and greater than 15 Hz at the {minus}30 dB level. Forty percent of the evenings showed spatial coherence distance of less than 180 m in the direction normal to the bistatic path; 40{percent} of the evenings showed spatial coherence of less than 75 m in the direction parallel to the path. Seventy-five percent of the evenings showed coherence bandwidths of less than 1.5 kHz. {copyright} 1999 American Geophysical Union

  12. A lower cost development path for heavy ion fusion

    SciTech Connect (OSTI)

    Hogan, W.J. [Lawrence Livermore National Lab., CA (United States); Meier, W.R. [Shafer (W.J.) Associates, Inc., Wakefield, MA (United States)

    1993-05-19T23:59:59.000Z

    If two features of the inertial fusion process are exploited successfully, they can lead to significantly lower costs for demonstrating the feasibility of commercial electric power production from this source of energy. First, fusion capsule ignition and burn physics is independent of reaction chamber size and hydrodynamically-equivalent capsules can be designed to perform at small yield, exactly as they do at large yield. This means that an integrated test of all power plant components and feasibility tests of various reaction chamber concepts can be done at much smaller sizes (about 1--2 m first wall radius) and much lower powers (tens of MWs) than magnetic fusion development facilities such as ITER. Second, the driver, which is the most expensive component of currently conceived IFE development facilities, can be used to support more than one experiment target chamber/reactor (simultaneously and/or sequentially). These two factors lead to lower development facility costs, modular facilities, and the planning flexibility to spread costs over time or do several things in parallel and thus shorten the total time needed for development of Inertial Fusion Energy (IFE). In this paper the authors describe the general feature of a heavy ion fusion development plan that takes advantage of upgradable accelerators and the ability to test chambers and reactor systems at small scale in order to reduce development time and costs.

  13. Hot gas path analysis and data evaluation of the performance parameters of a gas turbine

    E-Print Network [OSTI]

    Hanawa, David Allen

    1974-01-01T23:59:59.000Z

    SCIENCE December 1974 Major Subject: Mechanical Engineering HOT GAS PATH ANALYSIS AND DATA EVALUATION OF THE PERFORMANCE PARAMETERS OF A GAS TURBINE A Thesis by DAVID AI, LEN HANAWA Approved as to style and content by: PfnA J 7 EY3 .j (Chairman... of -Committee) zr (Head of Depai'tment) Member) /i ~E" Egg(JQJ a g i (Member) (Member) December l974 ABSTRACT Ho Gas Path Ana'ysis and Data Evaluation o. the Performance Parameters of a Gas Turbine (December 1974) David Allen Hanawa, B. S. , Texas A...

  14. Design and production of a hermetic bayonet isolation valve

    SciTech Connect (OSTI)

    Fuerst, J.

    1993-05-01T23:59:59.000Z

    Fermilab is upgrading the Tevatron for lower temperature/higher beam energy operation. Portions of the satellite refrigeration system will operate below atmospheric pressure after the upgrade is complete. Contamination must be prevented by hermetically sealing the subatmospheric helium to air interfaces. Bayonet connections in the low pressure flow path require a reliable, leak tight isolation valve instead of the standard quarter turn ball valve. Design, development, and production of a new valve are described.

  15. Multi-UAV Convoy Protection: An Optimal Approach to Path Planning and Coordination

    E-Print Network [OSTI]

    Egerstedt, Magnus

    1 Multi-UAV Convoy Protection: An Optimal Approach to Path Planning and Coordination X. C. Ding, A Aerial Vehicles (UAVs) to provide convoy protection to a group of ground vehicles. The UAVs are modeled to provide convoy protection to ground vehicles moving on straight lines. The minimum number of UAVs required

  16. MULTI-TARGET ASSIGNMENT AND PATH PLANNING FOR GROUPS OF UAVS

    E-Print Network [OSTI]

    Minai, Ali A.

    Chapter 1 MULTI-TARGET ASSIGNMENT AND PATH PLANNING FOR GROUPS OF UAVS Theju Maddula Ali A. Minai of Cincinnati Cincinnati, OH 45221 Abstract Uninhabited autonomous vehicles (UAVs) have many useful military in the possibility of using large teams (swarms) of UAVs functioning cooperatively to accomplish a large number

  17. UAV Intelligent Path Planning for Wilderness Search and Rescue Computer Science Department

    E-Print Network [OSTI]

    Goodrich, Michael A.

    UAV Intelligent Path Planning for Wilderness Search and Rescue Lanny Lin Computer Science in order to find the missing person in the shortest expected time. When using a UAV to support search of the limited UAV flying time. I. INTRODUCTION The use of mini-UAVs (Unmanned Aerial Vehicles) in Wilderness

  18. Flight Testing a Real Time Implementation of a UAV Path Planner Using Direct Collocation

    E-Print Network [OSTI]

    Flight Testing a Real Time Implementation of a UAV Path Planner Using Direct Collocation Brian R by tracking a second UAV flying a predefined pattern. Finally, a method of commanding the observation vector ^s UAV sensor line of sight unit vector p Attraction point u UAV Control vector xt Target state

  19. Spatial association between the locations of roots and water flow paths in highly structured soil

    E-Print Network [OSTI]

    Gardiner, Nathan Thomas

    2005-02-17T23:59:59.000Z

    the smallest (> 1 mm diameter) roots were not randomly distributed. The results did show that the larger roots were not randomly distributed, and evidence pointed to a clustering of roots in and around the dye stained flow paths. However, the data fell short...

  20. Experimental Demonstration of an Enhanced Impairment-Aware Path Computation Element

    E-Print Network [OSTI]

    Varvarigo, Emmanouel "Manos"

    Path Computation Element (PCE). The resulting centralized entity is called Enhanced PCE (hereafter EPCE nodes. The role of the standard PCE within the proposed EPCE is twofold. Firstly, it participates utilizing the multi-parametric IA-RWA algorithm presented in [3]. Fig. 1. The Enhanced PCE (EPCE). #12;Upon

  1. Design and Implementation of a Path Computation Element in GMPLS-enabled

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    wavelength protected SRLGs #12;6UPC Workshop Vilanova ­ Oct 16 PCE: design & high level functional architecture P. Vasseur et al. "Path Computation Element (PCE) Communication Protocol (PCEP)" draft-ietf-pce-pcep, work in progress. Connection Manager Asyncronous I/O PCEP sessions PCC FSM PCC FSM PCC FSM PCE Peer FSM

  2. Motion planning for experimental air path control of a variable-valve-timing spark ignition engine

    E-Print Network [OSTI]

    to driveability problems) and on the fuel/air ratio (FAR) (leading to pollution peaks). To compensateMotion planning for experimental air path control of a variable-valve-timing spark ignition engine Syste¬īmes, Mines-ParisTech 60, bd St Michel, 75272 Paris, France a r t i c l e i n f o Article history

  3. 2006-01-1085 Air Path Estimation on Diesel HCCI Engine

    E-Print Network [OSTI]

    : fresh air and EGR temperature probes. INTRODUCTION Increasingly stringent pollution standards norms have2006-01-1085 Air Path Estimation on Diesel HCCI Engine J. Chauvin, N. Petit, P. Rouchon ¬īEcole des Mines de Paris G. Corde IFP C. Vigild Ford Forschungszentrum Aachen GmbH Copyright c 2006 Society

  4. Static Variable Ordering in ZBDDs for Path Delay Fault Coverage Calculation

    E-Print Network [OSTI]

    Gunes, Mehmet Hadi

    to calculate exact PDF coverage nonenumeratively. Each PDF is modeled as a subset of all nets in a circuitStatic Variable Ordering in ZBDDs for Path Delay Fault Coverage Calculation Fatih Kocan, Mehmet Gunes, Mitchell A. Thornton Southern Methodist University, Dallas, Texas, U.S.A. Abstract Zero

  5. The Impact of Manufacturing Offshore on Technology Development Paths in the Automotive and Optoelectronics Industries

    E-Print Network [OSTI]

    de Weck, Olivier L.

    The Impact of Manufacturing Offshore on Technology Development Paths in the Automotive Systems and Civil and Environmental Engineering #12;The Impact of Manufacturing Offshore on Technology of the impact of manufacturing offshore on the technology trajectory of the firm and the industry. It looks

  6. Abstract Title: Comprehensive assessment of peripheral arteries using multi-path curved planar

    E-Print Network [OSTI]

    reformation of CTA datasets Author Block: A. Koechl, A. Kanitsar, F. Lomoschitz, E. Groeller, D. Fleischmann - Purpose: To assess the diagnostic efficiency of multi-path curved planar reformations (mpCPR), a new image composite views (over a 180į range), which simultaneously display curved planar reformations through each

  7. Some path large deviation results for a branching diffusion Robert Hardy and Simon C. Harris

    E-Print Network [OSTI]

    Harris, Simon Colin

    in Git, J.Harris and S.C.Harris [4]. Our approach involves an application of a change of measureSome path large deviation results for a branching diffusion Robert Hardy and Simon C. Harris of Hardy and Harris [5, 7, 6]. Our proof combines simple martingale ideas with applications of Varadhan

  8. New Approach to Modelling Water Paths in Managed Rainforests Nick A CHAPPELL*1

    E-Print Network [OSTI]

    Chappell, Nick A

    pathways (e.g., pressure and kinematic waves) would require much re-programming and reNew Approach to Modelling Water Paths in Managed Rainforests Nick A CHAPPELL*1 , Wlodek TYCH1 for such forecasts. Limits to catchment models using micro-scale physics: When using catchment models based on soil-water

  9. Quantum free-energy differences from nonequilibrium path integrals. I. Methods and numerical application

    E-Print Network [OSTI]

    Schofield, Jeremy

    Quantum free-energy differences from nonequilibrium path integrals. I. Methods and numerical are combined to yield methods for computing free-energy differences in quantum systems using nonequilibrium,8 provide a means to compute the free-energy difference between two classical systems by use of a control

  10. Reconstruction of the Free Energy in the Metastable Region using the Path Ensemble

    E-Print Network [OSTI]

    Heermann, Dieter W.

    Reconstruction of the Free Energy in the Metastable Region using the Path Ensemble Armando Ticona which we reconstruct the free energy as a function of the magnetic field, temperature and system size. From the reconstructed free energy, we obtain the free energy barrier that is associated

  11. Studies on free energy calculations. I. Thermodynamic integration using a polynomial path

    E-Print Network [OSTI]

    Mezei, Mihaly

    Studies on free energy calculations. I. Thermodynamic integration using a polynomial path Haluk in the free energy of hydration between the C, and aR conformations of alanine dipeptide at infinite dilution equilibria is determined by free energy ditferences, the calculation of the free energies has long been

  12. Equilibrium free energies from path sampling of nonequilibrium trajectories Sean X. Suna)

    E-Print Network [OSTI]

    Sun, Sean

    Equilibrium free energies from path sampling of nonequilibrium trajectories Sean X. Suna equilibrium free energy and nonequilibrium work is rewritten as an average of work with respect to a work nonequilibrium trajectories yields good estimates of the equilibrium free energy change. The procedure can

  13. An Energy-Efficient Algorithm For Conflict-Free AGV Routing On A Linear Path Layout

    E-Print Network [OSTI]

    Zeng, Jianyang "Michael"

    1 An Energy-Efficient Algorithm For Conflict-Free AGV Routing On A Linear Path Layout ZENG Jian time and the AGV utilization in dispatching and routing. However, as energy shortage and pollution to environment become major concerns and the competition become more intense, the issue of minimizing the energy

  14. Two Paths to Transforming Markets through Public Sector Energy Efficiency: Bottom Up versus Top Down

    E-Print Network [OSTI]

    Two Paths to Transforming Markets through Public Sector Energy Efficiency: Bottom Up versus Top agencies, reduced demand on capacity-constrained electric utility systems, increased energy system sector's buying power and visible leadership offer a powerful, non-regulatory means to stimulate market

  15. Path planning is no substitute for intelligent behavior David L. Jung*

    E-Print Network [OSTI]

    Parker, Lynne E.

    different autonomous multi-robot systems using two very different approaches. We describe the problems for two different autonomous multi-robot systems using two very different approaches. Although the robot, to which we applied the classical path planning approach, is a cooperative multi-vehicle mining task

  16. Paths to fusion energy The next 30 years, the next 10 years

    E-Print Network [OSTI]

    Paths to fusion energy The next 30 years, the next 10 years S. Prager The fusion era A roadmap to fusion energy discussed in US present GA PPPL MIT Plasma confinement research program #12;Issues for a fusion roadmap · Trade

  17. Path Integral Monte Carlo and Density Functional Molecular Dynamics Simulations of Hot, Dense Helium

    E-Print Network [OSTI]

    Militzer, Burkhard

    Path Integral Monte Carlo and Density Functional Molecular Dynamics Simulations of Hot, Dense integral Monte Carlo (PIMC) and density func- tional molecular dynamics (DFT-MD), are applied to study hot excitation mecha- nisms that determine their behavior at high temperature. The helium atom has two ionization

  18. Eur. J. For. Path. 21 (1991) 424-429 1991 Verlag Paul Parey, Hamburg und Berlin

    E-Print Network [OSTI]

    Eur. J. For. Path. 21 (1991) 424-429 @ 1991 Verlag Paul Parey, Hamburg und Berlin ISSN 0300 J. SWART,E. CO;.JRADIE and M. J. WINGFIELD Abstract The pathogenicity of an isolate of Cryphonectria and TAY 1983; SHARMA et a1. 1985a and b; FLORENCE et al. 1986; HODGES et a1. 1986; OLD et a1. 1986; \\'7

  19. The Impact of Interference on Optimal Multi-path Routing in Ad Hoc Networks

    E-Print Network [OSTI]

    Boucherie, Richard J.

    The Impact of Interference on Optimal Multi-path Routing in Ad Hoc Networks Roland de Haan, Richard-to-end performance measures such as through- put in ad hoc networks, emphasizing the performance trade-off between-destination pairs and different radio ranges are analyzed. Keywords: Ad hoc networks, Interference, Capacity, Multi

  20. On Tractability of Path Integration Columbia University Computer Science Department Report CUCS02296

    E-Print Network [OSTI]

    on an infinite dimensional space then path integration is intractable. In this case, there exists no effective, the univariate case d = 1 is best understood and has a rich and well­developed theory. Elements of the classical theory of univariate integration can be found in almost all numerical analysis textbooks. The study

  1. Geophysical flight line flying and flight path recovery utilizing the Litton LTN-76 inertial navigation system

    SciTech Connect (OSTI)

    Mitkus, A.F.; Cater, D.; Farmer, P.F.; Gay, S.P. Jr.

    1981-11-01T23:59:59.000Z

    The Litton LTN-76 Inertial Navigation Systems (INS) with Inertial Track guidance System (ITGS) software is geared toward the airborne survey industry. This report is a summary of tests performed with the LTN-76 designed to fly an airborne geophysical survey as well as to recover the subsequent flight path utilizing INS derived coordinates.

  2. A PRIMER ON RIEMANNIAN GEOMETRY AND STOCHASTIC ANALYSIS ON PATH SPACES

    E-Print Network [OSTI]

    Driver, Bruce

    A PRIMER ON RIEMANNIAN GEOMETRY AND STOCHASTIC ANALYSIS ON PATH SPACES BRUCE K. DRIVER Abstract for the first lecture which was held at University of Z√ľrich. Contents 1. Summary of ETH talk contents 2 2 of California, San Diego . La Jolla, CA 92093-0112 . 1 #12;2 BRUCE K. DRIVER 5.1. Tangent spaces and Riemannian

  3. A geometric framework for channel network extraction from lidar: Nonlinear diffusion and geodesic paths

    E-Print Network [OSTI]

    Foufoula-Georgiou, Efi

    A geometric framework for channel network extraction from lidar: Nonlinear diffusion and geodesic extraction. Following this preprocessing, channels are defined as curves of minimal effort, or geodesics and geodesic paths, J. Geophys. Res., 115, F01002, doi:10.1029/2009JF001254. 1. Introduction [2] The detection

  4. Levy path integral approach to the solution of the fractional SchrŲdinger equation with infinite square well

    E-Print Network [OSTI]

    Dong Jianping

    2013-01-14T23:59:59.000Z

    The solution to the fractional Schr\\"odinger equation with infinite square well is obtained in this paper, by use of the L\\'evy path integral approach. We obtain the even and odd parity wave functions of this problem, which are in accordance with those given by Laskin in [Chaos 10 (2000), 780--790].

  5. The path inference filter: model-based low-latency map matching of probe

    E-Print Network [OSTI]

    Abbeel, Pieter

    of automation onboard vehicles have created a very fertile ground for GPS data sources from probe vehicles for example [4], and the paradigm of connected (and automated) vehicles does not automatically translateThe path inference filter: model-based low-latency map matching of probe vehicle data Timothy

  6. Simultaneous Bayesian reconstruction of diffusivity and bond potentials using path integrals

    E-Print Network [OSTI]

    Levine, Alex J.

    Simultaneous Bayesian reconstruction of diffusivity and bond potentials using path integrals Joshua requires fewer data and allows simultaneous inference of both complex bond potentials and diffusivity spectroscopy (DFS) has been used to distort bonds. The resulting responses, in the form of rupture forces, work

  7. The self-assembly of paths and squares at temperature 1 Pierre-Etienne Meunier

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The self-assembly of paths and squares at temperature 1 Pierre-¬īEtienne Meunier Abstract We prove known upper bound. Non-cooperative self-assembly, also known as "temperature 1", is where tiles bind in algorithmic self-assembly, published by Rothe- mund and Winfree in STOC 2000, in the case where growth starts

  8. Statistical fracture modeling: crack path and fracture criteria with application to homogeneous and

    E-Print Network [OSTI]

    Ritchie, Robert

    Statistical fracture modeling: crack path and fracture criteria with application to homogeneous; accepted 23 January 2002 Abstract Analysis has been performed on fracture initiation near a crack in a brittle material with strength described by Weibull statistics. This nonlocal fracture model allows

  9. String method in collective variables: Minimum free energy paths and isocommittor surfaces

    E-Print Network [OSTI]

    Van Den Eijnden, Eric

    York University, New York, New York 10012 Giovanni Ciccottid INFM and Dipartimento di Fisica in the free energy. Provided that the number of collective variables is large enough, the new techniqueString method in collective variables: Minimum free energy paths and isocommittor surfaces Luca

  10. The TauPToo~kit:Flexib/e Seismic Travel-time and Ray-path Utilities

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    The TauPToo~kit:Flexib/e Seismic Travel-time and Ray-path Utilities H. Philip Crotwell, Thomas studies. These factors highlight the need for versatile utilities that allow the calculation of travel to implement this approach. We used Maple (Heal etal., 1996), a symbolic mathematics utility, to help convert

  11. Path Analysis Models of an Autonomous Agent in a Complex Environment

    E-Print Network [OSTI]

    25 Path Analysis Models of an Autonomous Agent in a Complex Environment Paul R. Cohen, David M populated by autonomous agents. It is a simulation of forest fires in Yellowstone National Park in unpredictable ways due to wind speed and direction, terrain and elevation, fuel type and moisture content

  12. Observations and design of public place and paths in a New England town

    E-Print Network [OSTI]

    Compton, Ann, M. Arch. Massachusetts Institute of Technology

    1984-01-01T23:59:59.000Z

    This is a plan - a hypothesis in which some ideas are developed for the building of a path and parks. Through the use of imagery texture, and materials a sense of the possible is evoked. This is also an exploration of ...

  13. Analysis of SPDEs Arising in Path Sampling Part II: The Nonlinear Case

    E-Print Network [OSTI]

    Hairer, Martin

    for the development of practical algorithms for sam- pling infinite dimensional problems. The resulting SPDEs provide sampling in the nonlinear case, via a change of measure. Keywords: Path sampling, stochastic PDEs introduced Stochastic Partial Differential Equation (SPDE) based approach to infinite dimensional sampling

  14. Path Integral Control by Reproducing Kernel Hilbert Space Embedding Konrad Rawlik

    E-Print Network [OSTI]

    Vijayakumar, Sethu

    of stochastic optimal control problems, of the so called path integral form, into reproducing kernel Hilbert efficiency, are provided. 1 Introduction While solving general non-linear stochastic optimal con- trol (SOC new sam- ples [Theodorou et al., 2010; 2009]. Additionally, the ap- proach remains model

  15. ORIGINAL ARTICLE Multi-objective optimal path selection in electric vehicles

    E-Print Network [OSTI]

    Sait, Sadiq M.

    ORIGINAL ARTICLE Multi-objective optimal path selection in electric vehicles Umair Farooq Siddiqi selection (OPS) in electric vehicles (EVs). The proposed algorithm requires less computational time evolution (SimE) √Ā Electric vehicles (EVs) 1 Introduction Navigation systems of modern vehicles are equipped

  16. Reliable Protein Folding on Complex Energy Landscapes: The Free Energy Reaction Path

    E-Print Network [OSTI]

    O'Hern, Corey S.

    Reliable Protein Folding on Complex Energy Landscapes: The Free Energy Reaction Path Gregg Lois the dynamics of protein folding. The key insight is that the search for the native protein conformation. In the ``new view'' of protein folding (3,7), statistical fluctuations on an energy landscape give rise

  17. Wind-Energy based Path Planning For Unmanned Aerial Vehicles Using Markov Decision Processes

    E-Print Network [OSTI]

    Smith, Ryan N.

    Wind-Energy based Path Planning For Unmanned Aerial Vehicles Using Markov Decision Processes Wesam H. Al-Sabban, Luis F. Gonzalez and Ryan N. Smith Abstract-- Exploiting wind-energy is one possible way to extend the flight duration of an Unmanned Aerial Vehicle. Wind-energy can also be used

  18. Wind-Energy based Path Planning For Electric Unmanned Aerial Vehicles Using Markov Decision Processes

    E-Print Network [OSTI]

    Smith, Ryan N.

    Wind-Energy based Path Planning For Electric Unmanned Aerial Vehicles Using Markov Decision wind-energy is one possible way to ex- tend flight duration for Unmanned Arial Vehicles. Wind-energy sources of wind energy available to exploit for this problem [5]: 1) Vertical air motion, such as thermal

  19. Immersive Well-Path Editing: Investigating the Added Value of Immersion Kenny Gruchalla

    E-Print Network [OSTI]

    Gruchalla, Kenny

    barriers in promot- ing immersive technology to industry is that the benefits are primarily anecdotal. The planning of a new oil well-path through the ex- isting wells of a mature oilfield is such a task of objects within that environment. The Immersive Drilling Planner (IDP) is a software application capable

  20. Unifying Points, Beams, and Paths in Light Transport Simulation Jaroslav Kivnek1

    E-Print Network [OSTI]

    Montréal, Université de

    Unifying Points, Beams, and Paths in Light Transport Simulation Jaroslav Kiv√°nek1 Iliyan Georgiev2 Point-point estimator (Volumetric photon mapping w/out ray marching [Jensen and Christensen 1998]) Point-beam estimator (Beam radiance estimate [Jarosz et al. 2008]) Beam-beam estimator (Photon beams [Jarosz et al

  1. The Need for Cooperation and Relaying in Short-Range High Path Loss Sensor Networks

    E-Print Network [OSTI]

    a propagation model and a radio model for communication along the human body. Using these models, energyThe Need for Cooperation and Relaying in Short-Range High Path Loss Sensor Networks Bart Braem--This paper focuses on the energy efficiency of communication in small-scale sensor networks experiencing high

  2. Failure-Tolerant Path Planning for the PA-10 Robot Operating Amongst Obstacles

    E-Print Network [OSTI]

    Maciejewski, Anthony A.

    Failure-Tolerant Path Planning for the PA-10 Robot Operating Amongst Obstacles Rodrigo S. Jamisola/or orientation in the workspace despite any single locked-joint failure at any time. An algorithm is presented relative to its task, only a single locked-joint failure occurs at any given time, the robot is capable

  3. Polynomial-Neural-Networks--B ased Mobile Robot Path C. L. Philip Chen and Farid Ahmed

    E-Print Network [OSTI]

    Ahmed, Farid

    is then utilized to move the robot away from the obstacle or direct the rol)Ot along the contour of the obstaclePolynomial- Neural-Networks--B ased Mobile Robot Path Planning C. L. Philip Chen and Farid Ahmed for mobile robot navigation. The PNN is a feature-based mapping neural network which can be successfully

  4. An Architecture for Managing Virtual Circuit and Virtual Path Services on ATM Networks

    E-Print Network [OSTI]

    Columbia University

    1 An Architecture for Managing Virtual Circuit and Virtual Path Services on ATM Networks Abstract management architecture that provides the services and is instrumented for network management purposes service monitor- ing and control functions. The network management architecture proposes complete managed

  5. Two air path observers for turbocharged SI engines with Guillaume Colina,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , and an efficient control of the air actuators is required for engine torque control. Two non-linear estimators decreases pollutants emission, especially nitrogen oxides (NOx). 1.2. System description The air intakeTwo air path observers for turbocharged SI engines with VCT Guillaume Colina, , G¬īerard Blochb

  6. GEOSTAR-II: A PROTOTYPE WATER VAPOR IMAGER/SOUNDER FOR THE PATH Todd Gaier1

    E-Print Network [OSTI]

    Ruf, Christopher

    GEOSTAR-II: A PROTOTYPE WATER VAPOR IMAGER/SOUNDER FOR THE PATH MISSION Todd Gaier1 , Bjorn Lambrigtsen1 , Pekka Kangaslahti1 , Boon Lim1 , Alan Tanner1 , Dennis Harding1 , Heather Owen1 , Mary Soria1 GHz water line. The preferred concept to meet this requirement is an interferometric imager

  7. Approximation Algorithms and Heuristics for a 2-depot, Heterogeneous Hamiltonian Path Problem

    E-Print Network [OSTI]

    Doshi, Riddhi Rajeev

    2011-10-21T23:59:59.000Z

    Various civil and military applications of UAVs, or ground robots, require a set of vehicles to monitor a group of targets. Routing problems naturally arise in this setting where the operators of the vehicles have to plan the paths suitably in order...

  8. Control of Delayed Recycling Systems with an Unstable Pole at Forward Path

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Control of Delayed Recycling Systems with an Unstable Pole at Forward Path J. F. Marquez Rubio, B. del Muro Cu¬īellar and Olivier Sename Abstract-- Unstable time delay system and recycling system pose a challenge problem in their own. When unstable time delay system have recycle the control problem becomes

  9. Path following with backtracking based on fuzzy controllers for forward and reverse driving

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    considers a gearshift. Since fuzzy logic is a good intuitive technique for the control of nonlinear systemsPath following with backtracking based on fuzzy controllers for forward and reverse driving J vehicle guidance system based on fuzzy logic systems to re- solve unexpected road situations. A fuzzy

  10. Path-Integral Monte Carlo And The Squeezed Trapped Bose-Einstein Gas

    E-Print Network [OSTI]

    Mullin, William J.

    Path-Integral Monte Carlo And The Squeezed Trapped Bose-Einstein Gas Juan Pablo Fern√°ndez1 the gas becomes effectively two-dimensional (2D). We confirm the plausibility of this result by performing different estimates for the condensate fraction. For the ideal gas, we find that the PIMC column density

  11. Some comments on rigorous quantum field path integrals in the analytical regularization scheme

    E-Print Network [OSTI]

    Botelho, Luiz C L

    2009-01-01T23:59:59.000Z

    Trough the systematic use of the Minlos theorem on thesupport of cylindrical measures on R infinity, we produce several mathematically rigorous path integrals in interacting euclidean quantum fields with Gaussian free measures defined by generalizeds powers ofthe laplacean operator and useful in Loop space approach for Astekar-Sen scheme for quantizing gravity

  12. Some comments on rigorous quantum field path integrals in the analytical regularization scheme

    E-Print Network [OSTI]

    Luiz. C. L. Botelho

    2012-07-02T23:59:59.000Z

    Trough the systematic use of the Minlos theorem on the support of cylindrical measures on R infinity, we produce several mathematically rigorous path integrals in interacting euclidean quantum fields with Gaussian free measures defined by generalizeds powers of the laplacean operator on finite volume space-times

  13. Path Integral Monte Carlo Simulation of the Low-Density Hydrogen Plasma B. Militzer y

    E-Print Network [OSTI]

    Militzer, Burkhard

    Path Integral Monte Carlo Simulation of the Low-Density Hydrogen Plasma B. Militzer y Lawrence to calculate the equilibrium properties of hydrogen in the density and temperature range of 9:83 #2; 10 4 #20 surface. We calculate the equation of state and compare with other models for hydrogen valid

  14. Oxygen diffusion in titanite: Lattice diffusion and fast-path diffusion in single crystals

    E-Print Network [OSTI]

    Watson, E. Bruce

    Oxygen diffusion in titanite: Lattice diffusion and fast-path diffusion in single crystals X June 2006 Editor: P. Deines Abstract Oxygen diffusion in natural and synthetic single-crystal titanite was characterized under both dry and water-present conditions. For the dry experiments, pre-polished titanite

  15. A path integral formalism for the closure of autonomous statistical systems

    E-Print Network [OSTI]

    Richard Kleeman

    2015-03-25T23:59:59.000Z

    Recently a path integral formalism has been proposed by the author which gives the time evolution of moments of slow variables in a Hamiltonian statistical system. That formalism is extended here to deal with a more general autonomous dynamical system. An immediate practical application to forced dissipative turbulent systems is thus now possible.

  16. On the Selection of Optimal Diverse AS-Paths for Inter-Domain IP/(G)MPLS Tunnel Provisioning

    E-Print Network [OSTI]

    Rougier, Jean-Louis

    the router-level inter-AS path computation along the AS path, which is accomplished by the PCE Element (PCE)-based method [3] can be adopted. Each domain elects at least one PCE. Given that TE information is not shared between domains for scalability and confidentiality reasons [1], a single PCE

  17. Quantum criticality for few-body systems: Path-integral approach Ricardo A. Sauerwein1,2

    E-Print Network [OSTI]

    Kais, Sabre

    to obtain the critical nuclear charges for few-electron atoms 2,5 and simple diatomic molecules 7Quantum criticality for few-body systems: Path-integral approach Ricardo A. Sauerwein1,2 and Sabre 2001 We present the path-integral approach to treat quantum phase transitions and critical phenomena

  18. Path-Quality Monitoring in the Presence of Adversaries (This is the full version of [21] from June 12, 2009)

    E-Print Network [OSTI]

    Goldwasser, Shafi

    that can make a path look better than it really is. In this paper, we design and analyze path- per, our protocols are efficient enough to run at line rate on high-speed routers. We present a secure-quality monitoring and derive analytic expressions for the trade-off between statistical accuracy and system overhead

  19. Energy-Efficient Reliable Paths for On-Demand Routing Protocols Tamer Nadeem, Suman Banerjee, Archan Misra, Ashok Agrawala

    E-Print Network [OSTI]

    Banerjee, Suman

    1 Energy-Efficient Reliable Paths for On-Demand Routing Protocols Tamer Nadeem, Suman Banerjee does not work for on-demand protocols and some additional mechanisms are needed to compute energy-efficient-Demand routing proto- col (AODV), and show how it can be enhanced to compute such energy-efficient reliable paths

  20. EnergyEfficient Reliable Paths for OnDemand Routing Protocols Tamer Nadeem, Suman Banerjee, Archan Misra, Ashok Agrawala

    E-Print Network [OSTI]

    Banerjee, Suman

    1 Energy≠Efficient Reliable Paths for On≠Demand Routing Protocols Tamer Nadeem, Suman Banerjee does not work for on≠demand protocols and some additional mechanisms are needed to compute energy≠efficient≠Demand routing proto≠ col (AODV), and show how it can be enhanced to compute such energy≠efficient reliable paths

  1. Fracture path in an anisotropic material in the light of a friction experiment. D. Chateau and J.-C. Geminard

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Fracture path in an anisotropic material in the light of a friction experiment. D. Chateau and J is generally used to predict the path of a fracture even if the validity of the principle is difficult. INTRODUCTION Fractures are ubiquitous in everyday life. Examples range, from the harmless, annoying but maybe

  2. Path Prediction for High Issue-Rate Processors Kishore N. Menezes Sumedh W. Sathaye Thomas M. Conte

    E-Print Network [OSTI]

    Conte, Thomas M.

    Path Prediction for High Issue-Rate Processors Kishore N. Menezes Sumedh W. Sathaye Thomas M. Conte predict a single branch at a time. Performance improvement is possible by predicting multiple branches in a single cycle. This paper presents a technique to predict paths in a single access. The correlation

  3. Horizontal coherence of low-frequency fixed-path sound in a continental shelf region with internal-wave activity

    E-Print Network [OSTI]

    Horizontal coherence of low-frequency fixed-path sound in a continental shelf region with internal-wave) populated with tidally generated long- and short-wavelength internal waves. Sound paths are 19 km and explain sound field spatial and temporal variability under these conditions. The intermittent internal-wave

  4. Fokker-Planck Equation and Path Integral Representation of Fractional Ornstein-Uhlenbeck Process with Two Indices

    E-Print Network [OSTI]

    C. H. Eab; S. C. Lim

    2014-09-19T23:59:59.000Z

    This paper considers the Fokker-Planck equation and path integral formulation of the fractional Ornstein-Uhlenbeck process parametrized by two indices. The effective Fokker-Planck equation of this process is derived from the associated fractional Langevin equation. Path integral representation of the process is constructed and the basic quantities are evaluated.

  5. Using a Family of Dividing Surfaces Normal to the Minimum EnergyPath for Quantum Instanton Rate Constants

    SciTech Connect (OSTI)

    Li, Yimin; Miller, Wlliam H.

    2006-02-22T23:59:59.000Z

    One of the outstanding issues in the quantum instanton (QI) theory (or any transition state-type theory) for thermal rate constants of chemical reactions is the choice of an appropriate ''dividing surface'' (DS) that separates reactants and products. (In the general version of the QI theory, there are actually two dividing surfaces involved.) This paper shows one simple and general way for choosing DS's for use in QI Theory, namely using the family of (hyper) planes normal to the minimum energy path (MEP) on the potential energy surface at various distances s along it. Here the reaction coordinate is not one of the dynamical coordinates of the system (which will in general be the Cartesian coordinates of the atoms), but rather simply a parameter which specifies the DS. It is also shown how this idea can be implemented for an N-atom system in 3d space in a way that preserves overall translational and rotational invariance. Numerical application to a simple system (the colliner H + H{sub 2} reaction) is presented to illustrate the procedure.

  6. IPA Derivatives for Make-to-Stock Production-Inventory Systems With Backorders

    E-Print Network [OSTI]

    IPA Derivatives for Make-to-Stock Production-Inventory Systems With Backorders Yao Zhao Benjamin for the (stochastic) IPA (Infinitesimal Perturbation Analysis) derivatives of the sample-path time averages of the model and comprehensiveness of the IPA derivative formulas hold out the promise of gradient

  7. IPA Derivatives for Make-to-Stock Production-Inventory Systems With Lost Sales

    E-Print Network [OSTI]

    Lin, Xiaodong

    IPA Derivatives for Make-to-Stock Production-Inventory Systems With Lost Sales Yao Zhao for IPA (Infinitesimal Perturbation Analysis) derivatives of the sample-path time averages law need be postulated. It is further shown that all IPA derivatives under study are unbiased and very

  8. The Upgrade Path from Legacy VME to VXS Dual Star Connectivity for Large Scale Data Acquisition and Trigger Systems

    SciTech Connect (OSTI)

    Cuevas, C; Barbosa, F J; Dong, H; Gu, W; Jastrzembski, E; Kaneta, S R; Moffitt, B; Nganga, N; Raydo, B J; Somov, A; Taylor, W M

    2011-10-01T23:59:59.000Z

    New instrumentation modules have been designed by Jefferson Lab and to take advantage of the higher performance and elegant backplane connectivity of the VITA 41 VXS standard. These new modules are required to meet the 200KHz trigger rates envisioned for the 12GeV experimental program. Upgrading legacy VME designs to the high speed gigabit serial extensions that VXS offers, comes with significant challenges, including electronic engineering design, plus firmware and software development issues. This paper will detail our system design approach including the critical system requirement stages, and explain the pipeline design techniques and selection criteria for the FPGA that require embedded Gigabit serial transceivers. The entire trigger system is synchronous and operates at 250MHz clock with synchronization signals, and the global trigger signals distributed to each front end readout crate via the second switch slot in the 21 slot, dual star VXS backplane. The readout of the buffered detector signals relies on 2eSST over the standard VME64x path at >200MB/s. We have achieved 20Gb/s transfer rate of trigger information within one VXS crate and will present results using production modules in a two crate test configuration with both VXS crates fully populated. The VXS trigger modules that reside in the front end crates, will be ready for production orders by the end of the 2011 fiscal year. VXS Global trigger modules are in the design stage now, and will be complete to meet the installation schedule for the 12GeV Physics program.

  9. RMOTC - Production

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearch Welcome to theNewsCenter forQuality AssuranceProduction RMOTC

  10. Viscoelasticity and primitive path analysis of entangled polymer liquids: From f-actin to polyethylene

    E-Print Network [OSTI]

    Nariya Uchida; Gary S. Grest; Ralf Everaers

    2007-11-28T23:59:59.000Z

    We combine computer simulations and scaling arguments to develop a unified view of polymer entanglement based on the primitive path analysis (PPA) of the microscopic topological state. Our results agree with experimentally measured plateau moduli for three different polymer classes over a wide rangeof reduced polymer densities: (i) semi-dilute theta solutions of synthetic polymers, (ii) the corresponding dense melts above the glass transition or crystallization temperature, and (iii) solutions of semi-flexible (bio)polymers such as f-actin or suspensions of rodlike viruses. Together these systems cover the entire range from loosely to tightly entangled polymers. In particular, we argue that the primitive path analysis renormalizes a loosely to a tightly entangled system and provide a new explanation of the successful Lin-Noolandi packing conjecture for polymer melts.

  11. Neural Network Model for Path-Planning of Robotic Rover Systems

    E-Print Network [OSTI]

    Bassil, Youssef

    2012-01-01T23:59:59.000Z

    Today, robotics is an auspicious and fast-growing branch of technology that involves the manufacturing, design, and maintenance of robot machines that can operate in an autonomous fashion and can be used in a wide variety of applications including space exploration, weaponry, household, and transportation. More particularly, in space applications, a common type of robots has been of widespread use in the recent years. It is called planetary rover which is a robot vehicle that moves across the surface of a planet and conducts detailed geological studies pertaining to the properties of the landing cosmic environment. However, rovers are always impeded by obstacles along the traveling path which can destabilize the rover's body and prevent it from reaching its goal destination. This paper proposes an ANN model that allows rover systems to carry out autonomous path-planning to successfully navigate through challenging planetary terrains and follow their goal location while avoiding dangerous obstacles. The propos...

  12. Investigation of leakage current paths in n-GaN by conductive atomic force microscopy

    SciTech Connect (OSTI)

    Kim, Bumho; Park, Yongjo, E-mail: yp0520@snu.ac.kr, E-mail: eyoon@snu.ac.kr [Energy Semiconductor Research Center, Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270 (Korea, Republic of)] [Energy Semiconductor Research Center, Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270 (Korea, Republic of); Moon, Daeyoung; Nanishi, Yasushi [WCU Hybrid Materials Program, Department of Materials Science and Engineering, Seoul National University, Seoul 151-742 (Korea, Republic of)] [WCU Hybrid Materials Program, Department of Materials Science and Engineering, Seoul National University, Seoul 151-742 (Korea, Republic of); Joo, Kisu [Energy Semiconductor Research Center, Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270 (Korea, Republic of) [Energy Semiconductor Research Center, Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270 (Korea, Republic of); Department of Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Suwon 443-270 (Korea, Republic of); Oh, Sewoung [Department of Materials Science and Engineering, Seoul National University, Seoul 151-742 (Korea, Republic of)] [Department of Materials Science and Engineering, Seoul National University, Seoul 151-742 (Korea, Republic of); Lee, Young Kuk [Korea Research Institute of Chemical Technology, Daejon 305-600 (Korea, Republic of)] [Korea Research Institute of Chemical Technology, Daejon 305-600 (Korea, Republic of); Yoon, Euijoon, E-mail: yp0520@snu.ac.kr, E-mail: eyoon@snu.ac.kr [Energy Semiconductor Research Center, Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270 (Korea, Republic of) [Energy Semiconductor Research Center, Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270 (Korea, Republic of); WCU Hybrid Materials Program, Department of Materials Science and Engineering, Seoul National University, Seoul 151-742 (Korea, Republic of); Department of Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Suwon 443-270 (Korea, Republic of); Department of Materials Science and Engineering, Seoul National University, Seoul 151-742 (Korea, Republic of)

    2014-03-10T23:59:59.000Z

    We have investigated electrical characteristics of leakage current paths in n-GaN layer grown by metal-organic chemical vapor deposition with conductive-atomic force microscopy (C-AFM). The C-AFM mapping shows two kinds of leakage current paths existing in the n-GaN layer: open-core dislocation and pure screw dislocation. From the localized I-V curves measured by C-AFM, we confirmed that the open-core screw dislocation shows more significant leakage current. We explained these results in terms of a modified Schottky band model based on donor states formed by oxygen segregation at the (10?10) sidewall of the open-core screw dislocation.

  13. From Cleanup to Stewardship. A companion report to Accelerating Cleanup: Paths to Closure and background information to support the scoping process required for the 1998 PEIS Settlement Study

    SciTech Connect (OSTI)

    None

    1999-10-01T23:59:59.000Z

    Long-term stewardship is expected to be needed at more than 100 DOE sites after DOE's Environmental Management program completes disposal, stabilization, and restoration operations to address waste and contamination resulting from nuclear research and nuclear weapons production conducted over the past 50 years. From Cleanup to stewardship provides background information on the Department of Energy (DOE) long-term stewardship obligations and activities. This document begins to examine the transition from cleanup to long-term stewardship, and it fulfills the Secretary's commitment to the President in the 1999 Performance Agreement to provide a companion report to the Department's Accelerating Cleanup: Paths to Closure report. It also provides background information to support the scoping process required for a study on long-term stewardship required by a 1998 Settlement Agreement.

  14. The F-path approach for pattern generation in microprocessor testing

    E-Print Network [OSTI]

    Salinas, Jose?

    2012-06-07T23:59:59.000Z

    X CONCLUSIONS 99 REFERENCES 101 APPENDICES A MC68000 ASSEMBLER LANGUAGE DESCRIPTION. . . . . . . B INSTRUCTION SET FOR MINIMUM CONTROL TESTING 104 107 VITA 110 vnt LIST OF FIGURES Page Figure 1 Figure 2 Figure 3 Figure 4 Figure 5...THE F-PATH APPROACH FOR PATTERN GENERATION IN MICROPROCESSOR TESTING A Thesis by JOSE SAL1NAS Approved as to style and content by: Fabrizio Lombardi (Chair of Committee) Donald Friesen (Member) Richard Vo (Head of Department) Karan...

  15. Two-path transport measurements with bias dependence on a triple quantum dot

    SciTech Connect (OSTI)

    Kotzian, M.; Rogge, M. C.; Haug, R. J. [Institut fŁr FestkŲrperphysik, Leibniz Universitšt Hannover, Appelstr. 2, 30167 Hannover (Germany)

    2013-12-04T23:59:59.000Z

    We present transport measurements on a lateral triple quantum dot with a star-like geometry and one lead attached to each dot. The system is studied in a regime close to established quadruple points, where all three dots are in resonance. The specific sample structure allows us to apply two different bias voltages to the two source leads and thus to study the influence between the paths with serial double dots.

  16. A Potential Path to Emissions-Free Fossil Energy | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels DataCombinedDepartment2015 InformationA BRIEF HISTORY OF THEAAA Potential Path

  17. BornOppenheimer invariants along nuclear configuration paths Department of Physical Chemistry and the Lise Meitner Minerva Center for Quantum Chemistry,

    E-Print Network [OSTI]

    Baer, Roi

    Born­Oppenheimer invariants along nuclear configuration paths Roi Baera) Department of Physical of the wave function. This is done for each calculated state at each nuclear position. Thus he defines a Born to an arbitrary path in nuclear configuration space. We identify invariant electronic states along these paths

  18. Decentralized robust control-system for a non-square MIMO system, the air-path of a turbocharged Diesel engine

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    and greenhouse gas pollutants. In this paper, a non-square multivariable controller for the air-path systemDecentralized robust control-system for a non-square MIMO system, the air-path of a turbocharged the performance of the proposed control-system. Keywords: Diesel engine air path, Robust control, CRONE

  19. Multi-SISO Robust Crone Design for the Air Path Control of a Diesel Engine G. Colin*, P. Lanusse**, A. Louzimi*,

    E-Print Network [OSTI]

    Boyer, Edmond

    Multi-SISO Robust Crone Design for the Air Path Control of a Diesel Engine G. Colin*, P. Lanusse is the air path control of a turbocharged diesel engine with Exhaust Gas Recirculation (EGR). Simulation, considering the air path control, the manipulated variables are the wastegate and the EGR valve

  20. Using computerized tomography to determine ionospheric structures. Part 2, A method using curved paths to increase vertical resolution

    SciTech Connect (OSTI)

    Vittitoe, C.N.

    1993-08-01T23:59:59.000Z

    A method is presented to unfold the two-dimensional vertical structure in electron density by using data on the total electron content for a series of paths through the ionosphere. The method uses a set of orthonormal basis functions to represent the vertical structure and takes advantage of curved paths and the eikonical equation to reduce the number of iterations required for a solution. Curved paths allow a more thorough probing of the ionosphere with a given set of transmitter and receiver positions. The approach can be directly extended to more complex geometries.

  1. Controlling Low-Rate Signal Path Microdischarge for an Ultra-Low-Background Proportional Counter

    SciTech Connect (OSTI)

    Mace, Emily K.; Aalseth, Craig E.; Bonicalzi, Ricco; Day, Anthony R.; Hoppe, Eric W.; Keillor, Martin E.; Myers, Allan W.; Overman, Cory T.; Seifert, Allen

    2013-05-01T23:59:59.000Z

    ABSTRACT Pacific Northwest National Laboratory (PNNL) has developed an ultra-low-background proportional counter (ULBPC) made of high purity copper. These detectors are part of an ultra-low-background counting system (ULBCS) in the newly constructed shallow underground laboratory at PNNL (at a depth of ~30 meters water-equivalent). To control backgrounds, the current preamplifier electronics are located outside the ULBCS shielding. Thus the signal from the detector travels through ~1 meter of cable and is potentially susceptible to high voltage microdischarge and other sources of electronic noise. Based on initial successful tests, commercial cables and connectors were used for this critical signal path. Subsequent testing across different batches of commercial cables and connectors, however, showed unwanted (but still low) rates of microdischarge noise. To control this noise source, two approaches were pursued: first, to carefully validate cables, connectors, and other commercial components in this critical signal path, making modifications where necessary; second, to develop a custom low-noise, low-background preamplifier that can be integrated with the ULBPC and thus remove most commercial components from the critical signal path. This integrated preamplifier approach is based on the Amptek A250 low-noise charge-integrating preamplifier module. The initial microdischarge signals observed are presented and characterized according to the suspected source. Each of the approaches for mitigation is described, and the results from both are compared with each other and with the original performance seen with commercial cables and connectors.

  2. Phase space path-integral formulation of the above-threshold ionization

    SciTech Connect (OSTI)

    Milosevic, D. B. [Faculty of Science, University of Sarajevo, Zmaja od Bosne 35, 71000 Sarajevo (Bosnia and Herzegowina) [Faculty of Science, University of Sarajevo, Zmaja od Bosne 35, 71000 Sarajevo (Bosnia and Herzegowina); Max-Born-Institut, Max-Born-Str. 2a, 12489 Berlin (Germany); Academy of Sciences and Arts of Bosnia and Herzegovina, Bistrik 7, 71000 Sarajevo (Bosnia and Herzegowina)

    2013-04-15T23:59:59.000Z

    Atoms and molecules submitted to a strong laser field can emit electrons of high energies in the above-threshold ionization (ATI) process. This process finds a highly intuitive and also quantitative explanation in terms of Feynman's path integral and the concept of quantum orbits [P. Salieres et al., Science 292, 902 (2001)]. However, the connection with the Feynman path-integral formalism is explained only by intuition and analogy and within the so-called strong-field approximation (SFA). Using the phase space path-integral formalism we have obtained an exact result for the momentum-space matrix element of the total time-evolution operator. Applying this result to the ATI we show that the SFA and the so-called improved SFA are, respectively, the zeroth- and the first-order terms of the expansion in powers of the laser-free effective interaction of the electron with the rest of the atom (molecule). We have also presented the second-order term of this expansion which is responsible for the ATI with double scattering of the ionized electron.

  3. Measurements of spatial and frequency coherence of an equatorial hf path during spread-F

    SciTech Connect (OSTI)

    Fitzgerald, T.J.; Argo, P.E.; Carlos, R.C.

    1993-01-01T23:59:59.000Z

    In August 1990, the authors set up an hf path on the equatorial path between Maloelap Atoll and Bikini Atoll. This path, which had a range of 702 km, reflected in the ionosphere approximately 100 km north of the Altair radar location on Kwajalein. Transmitters at Maloelap broadcasted four cw tones within bandwidth of either 4 kHz, 9 kHz, or 70 kHz to be used to determine frequency coherence and also a phase-coded pseudo random sequence with a bandwidth of 60 kHz (channel probe) to be used to determine time delay spread. A spatial array of antennas was deployed at Bikini to measure spatial and frequency coherence using the cw broadcasts. The system was run in the post-sunset time period over two weeks during which almost every night showed significant degradation due to spread F resulting in rapid fading, decreased spatial and frequency coherence, and increased time delay spread. Doppler spreads of greater than 20 Hz were not uncommon, and the spatial correlation distances and frequency coherence bandwidths became so small (50 meters and 1 kHz respectively) that the experiment had to be readjusted. Measurements taken by the Altair incoherent scatter radar and the CUPRI 50 MHz coherent scatter radar indicate that although the bistatic hf channel is affected by the large scale plume structures, most of the [open quotes]damage[close quotes] is done by the bottomside spread F.

  4. Measurements of spatial and frequency coherence of an equatorial hf path during spread-F

    SciTech Connect (OSTI)

    Fitzgerald, T.J.; Argo, P.E.; Carlos, R.C.

    1993-07-01T23:59:59.000Z

    In August 1990, the authors set up an hf path on the equatorial path between Maloelap Atoll and Bikini Atoll. This path, which had a range of 702 km, reflected in the ionosphere approximately 100 km north of the Altair radar location on Kwajalein. Transmitters at Maloelap broadcasted four cw tones within bandwidth of either 4 kHz, 9 kHz, or 70 kHz to be used to determine frequency coherence and also a phase-coded pseudo random sequence with a bandwidth of 60 kHz (channel probe) to be used to determine time delay spread. A spatial array of antennas was deployed at Bikini to measure spatial and frequency coherence using the cw broadcasts. The system was run in the post-sunset time period over two weeks during which almost every night showed significant degradation due to spread F resulting in rapid fading, decreased spatial and frequency coherence, and increased time delay spread. Doppler spreads of greater than 20 Hz were not uncommon, and the spatial correlation distances and frequency coherence bandwidths became so small (50 meters and 1 kHz respectively) that the experiment had to be readjusted. Measurements taken by the Altair incoherent scatter radar and the CUPRI 50 MHz coherent scatter radar indicate that although the bistatic hf channel is affected by the large scale plume structures, most of the {open_quotes}damage{close_quotes} is done by the bottomside spread F.

  5. path forward

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

    Meetings * Safety Theme Portfolio Apr Jan Feb Dec Nov May Jun Jul Aug Sep Oct Ergonomics Driving Safety Find & Fix Recreational Safety Hand Safety Struck By or Against Falls...

  6. Path 15

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006 TheSteven AshbyDepartment ofGE's E. TrifonPatents

  7. Nulljob product

    SciTech Connect (OSTI)

    Hughart, N.; Ritchie, D.

    1987-08-01T23:59:59.000Z

    The ever increasing demand for more CPU cycles for data analysis on the authors' Central VAX Cluster led them to investigate new ways to utilize more fully the resources that were available. A review of the experiment and software development VAX systems on site revealed many unused computing cycles. Furthermore, these systems were all connected by DECnet which would allow easy file transfer and remote batch job submission. A product was developed to allow jobs to be submitted on the Central VAX Cluster but actually to be run on one of the remote systems. The processing of the jobs was arranged, to the greatest extent possible, to be transparent to the user and to have minimal impact on both the Central VAX Cluster and remote systems.

  8. NULLJOB product

    SciTech Connect (OSTI)

    Hughart, N.; Ritchie, D.

    1987-05-01T23:59:59.000Z

    The ever increasing demand for more CPU cycles for data analysis on our Central VAX Cluster led us to investigate new ways to utilize more fully the resources that were available. A review of the experiment and software development VAX systems on site revealed many unused computing cycles. Furthermore, these systems were all connected by DECnet which would allow easy file transfer and remote batch job submission. A product was developed to allow jobs to be submitted on the Central VAX Cluster but actually to be run on one of the remote systems. The processing of the jobs was arranged, to the greatest extent possible, to be transparent to the user and to have minimal impact on both the Central VAX Cluster and remote systems.

  9. Particle confinement and Perturbed Dynamical System in Warped Product Spacetime

    E-Print Network [OSTI]

    Pinaki Bhattacharya; Sarbari Guha

    2012-05-12T23:59:59.000Z

    In this paper we have considered a five-dimensional warped product spacetime with spacelike extra dimension. We have decomposed the geodesic equations to get the motion along the extra dimension and have studied the dynamical system associated with it. The relation between the total energy along the phase path and the extra-dimensional coordinate have been established for different types of warping function and the nature of confinement of particle trajectories in these cases have been analyzed. We have also calculated the energy associated with the phase path under a linear coordinate perturbation independent of the affine parameter and have analyzed the nature of confinement and the geodesic motions in such a case. Finally, the stability of the dynamical system under a perturbation due to an extra-dimension dependent additional force and under the effect of scalar fields in the bulk, have been examined.

  10. Critical Path Method (CPM) Scheduling, Basic Engineering, and Project Approach for Typical Substation Engineering-Procurement-Construction (EPC) Project

    E-Print Network [OSTI]

    Jamir, Dewan R.

    2006-05-19T23:59:59.000Z

    This Field Project provides an overview of the typical substation Engineering-Procurement-Construction (EPC) project delivery method, the work breakdown structure, activities and sequences in the Critical Path Method (CPM) schedule, basic substation...

  11. The Diurnal Path of the Sun: Ideology and Interregional Interaction in Ancient Northwest Mesoamerica and the American Southwest

    E-Print Network [OSTI]

    Mathiowetz, Michael Dean

    2011-01-01T23:59:59.000Z

    The Diurnal Path of the Sun: Ideology and Interregional90). In the same story, the Sun Youth indicated where hesymbolic corn plant (i.e. , the Sun Youth standard) over the

  12. Calculation of beam paths in optical systems containing inhomogeneous isotropic media with cylindrical distribution of the refractive index

    SciTech Connect (OSTI)

    Grammatin, A.P.; Degen, A.B.; Katranova, N.A. [Vavilov State Optical Institute, St. Petersburg (Russian Federation)

    1995-06-01T23:59:59.000Z

    A system of differential equations convenient for numerical computer integrating is proposed to calculate beam paths, elementary astigmatic beams, and the optical path in isotropic media with cylindrical distribution of the refractive index. A method for selecting the step of this integration is proposed. This technique is implemented in the program package for computers of the VAX series meant for the computer-aided design of optical systems. 4 refs.

  13. Characterization of the Los Alamos IPG YLR-6000 fiber laser using multiple optical paths and laser focusing optics

    SciTech Connect (OSTI)

    Milewski, John O [Los Alamos National Laboratory; Bernal, John E [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    Fiber laser technology has been identified as the replacement power source for the existing Los Alamos TA-55 production laser welding system. An IPG YLR-6000 fiber laser was purchased, installed at SM-66 R3, and accepted in February 2008. No characterization of the laser and no welding was performed in the Feb 2008 to May 2009 interval. T. Lienert and J. Bernal (Ref. 1, July 2009) determined the existing 200 mm Rofin collimator and focus heads used with the Rofin diode pumped lasers were inadequate for use with the IPG laser due to clipping of the IPG laser beam. Further efforts in testing of the IPG laser with Optoskand fiber delivery optics and a Rofin 120 mm collimator proved problematic due to optical fiber damage. As a result, IPG design optical fibers were purchased as replacements for subsequent testing. Within the same interval, an IPG fiber-to-fiber (F2F) connector, custom built for LANL, (J. Milewski, S. Gravener, Ref.2) was demonstrated and accepted at IPG Oxford, MA in August 2009. An IPG service person was contracted to come to LANL to assist in the installation, training, troubleshooting and characterization of the multiple beam paths and help perform laser head optics characterization. The statement of work is provided below: In summary the laser system, optical fibers, F2F connector, Precitec head, and a modified Rofin type (w/120mm Optoskand collimator) IWindowIBoot system focus head (Figure 1) were shown to perform well at powers up to 6 kW CW. Power measurements, laser spot size measurements, and other characterization data and lessons learned are contained within this report. In addition, a number of issues were identified that will require future resolution.

  14. LIFE Materials: Phase Formation and Transformations in Transmutation Fuel Materials for the LIFE Engine Part I - Path Forward Volume 3

    SciTech Connect (OSTI)

    Turchi, P A; Kaufman, L; Fluss, M

    2008-12-19T23:59:59.000Z

    The current specifications of the LLNL fusion-fission hybrid proposal, namely LIFE, impose severe constraints on materials, and in particular on the nuclear fissile or fertile nuclear fuel and its immediate environment. This constitutes the focus of the present report with special emphasis on phase formation and phase transformations of the transmutation fuel and their consequences on particle and pebble thermal, chemical, and mechanical integrities. We first review the work that has been done in recent years to improve materials properties under the Gen-IV project, and with in particular applications to HTGR and MSR, and also under GNEP and AFCI in the USA. Our goal is to assess the nuclear fuel options that currently exist together with their issues. Among the options, it is worth mentioning TRISO, IMF, and molten salts. The later option will not be discussed in details since an entire report (Volume 8 - Molten-salt Fuels) is dedicated to it. Then, in a second part, with the specific LIFE specifications in mind, the various fuel options with their most critical issues are revisited with a path forward for each of them in terms of research, both experimental and theoretical. Since LIFE is applicable to very high burn-up of various fuels, distinctions will be made depending on the mission, i.e., energy production or incineration. Finally a few conclusions are drawn in terms of the specific needs for integrated materials modeling and the in depth knowledge on time-evolution thermo-chemistry that controls and drastically affects the performance of the nuclear materials and their immediate environment. Although LIFE demands materials that very likely have not yet been fully optimized, the challenges are not insurmountable, and a well concerted experimental-modeling effort should lead to dramatic advances that should well serve other fission programs such as Gen-IV, GNEP, AFCI as well as the international fusion program, ITER.

  15. AN ADVANCED FRACTURE CHARACTERIZATION AND WELL PATH NAVIGATION SYSTEM FOR EFFECTIVE RE-DEVELOPMENT AND ENHANCEMENT OF ULTIMATE RECOVERY FROM THE COMPLEX MONTEREY RESERVOIR OF SOUTH ELLWOOD FIELD, OFFSHORE CALIFORNIA

    SciTech Connect (OSTI)

    Steve Horner; Iraj Ershaghi

    2002-01-31T23:59:59.000Z

    Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the original oil in place. To embark upon successful re-development and to optimize reservoir management, Venoco intends to investigate, map and characterize field fracture patterns and the reservoir conduit system. State of the art borehole imaging technologies including FMI, dipole sonic and cross-well seismic, interference tests and production logs will be employed to characterize fractures and micro faults. These data along with the existing database will be used for construction of a novel geologic model of the fracture network. Development of an innovative fracture network reservoir simulator is proposed to monitor and manage the aquifer's role in pressure maintenance and water production. The new fracture simulation model will be used for both planning optimal paths for new wells and improving ultimate recovery. In the second phase of this project, the model will be used for the design of a pilot program for downhole water re-injection into the aquifer simultaneously with oil production. Downhole water separation units attached to electric submersible pumps will be used to minimize surface fluid handling thereby improving recoveries per well and field economics while maintaining aquifer support. In cooperation with the DOE, results of the field studies as well as the new models developed and the fracture database will be shared with other operators. Numerous fields producing from the Monterey and analogous fractured reservoirs both onshore and offshore will benefit from the methodologies developed in this project. This report presents a summary of all technical work conducted during the fifth quarter of Budget Period I.

  16. AN ADVANCED FRACTURE CHARACTERIZATION AND WELL PATH NAVIGATION SYSTEM FOR EFFECTIVE RE-DEVELOPMENT AND ENHANCEMENT OF ULTIMATE RECOVERY FROM THE COMPLEX MONTEREY RESERVOIR OF SOUTH ELLWOOD FIELD, OFFSHORE CALIFORNIA

    SciTech Connect (OSTI)

    Steve Horner

    2004-07-30T23:59:59.000Z

    Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the original oil in place. To embark upon successful re-development and to optimize reservoir management, Venoco intends to investigate, map and characterize field fracture patterns and the reservoir conduit system. State of the art borehole imaging technologies including FMI, dipole sonic and cross-well seismic, interference tests and production logs will be employed to characterize fractures and micro faults. These data along with the existing database will be used for construction of a novel geologic model of the fracture network. Development of an innovative fracture network reservoir simulator is proposed to monitor and manage the aquifer's role in pressure maintenance and water production. The new fracture simulation model will be used for both planning optimal paths for new wells and improving ultimate recovery. In the second phase of this project, the model will be used for the design of a pilot program for downhole water re-injection into the aquifer simultaneously with oil production. Downhole water separation units attached to electric submersible pumps will be used to minimize surface fluid handling thereby improving recoveries per well and field economics while maintaining aquifer support. In cooperation with the DOE, results of the field studies as well as the new models developed and the fracture database will be shared with other operators. Numerous fields producing from the Monterey and analogous fractured reservoirs both onshore and offshore will benefit from the methodologies developed in this project. This report presents a summary of all technical work conducted during the third quarter of Budget Period II.

  17. AN ADVANCED FRACTURE CHARACTERIZATION AND WELL PATH NAVIGATION SYSTEM FOR EFFECTIVE RE-DEVELOPMENT AND ENHANCEMENT OF ULTIMATE RECOVERY FROM THE COMPLEX MONTEREY RESERVOIR OF SOUTH ELLWOOD FIELD, OFFSHORE CALIFORNIA

    SciTech Connect (OSTI)

    Steve Horner

    2004-10-29T23:59:59.000Z

    Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the original oil in place. To embark upon successful re-development and to optimize reservoir management, Venoco intends to investigate, map and characterize field fracture patterns and the reservoir conduit system. State of the art borehole imaging technologies including FMI, dipole sonic and cross-well seismic, interference tests and production logs will be employed to characterize fractures and micro faults. These data along with the existing database will be used for construction of a novel geologic model of the fracture network. Development of an innovative fracture network reservoir simulator is proposed to monitor and manage the aquifer's role in pressure maintenance and water production. The new fracture simulation model will be used for both planning optimal paths for new wells and improving ultimate recovery. In the second phase of this project, the model will be used for the design of a pilot program for downhole water re- injection into the aquifer simultaneously with oil production. Downhole water separation units attached to electric submersible pumps will be used to minimize surface fluid handling thereby improving recoveries per well and field economics while maintaining aquifer support. In cooperation with the DOE, results of the field studies as well as the new models developed and the fracture database will be shared with other operators. Numerous fields producing from the Monterey and analogous fractured reservoirs both onshore and offshore will benefit from the methodologies developed in this project. This report presents a summary of all technical work conducted during the fourth quarter of Budget Period II.

  18. AN ADVANCED FRACTURE CHARACTERIZATION AND WELL PATH NAVIGATION SYSTEM FOR EFFECTIVE RE-DEVELOPMENT AND ENHANCEMENT OF ULTIMATE RECOVERY FROM THE COMPLEX MONTEREY RESERVOIR OF SOUTH ELLWOOD FIELD, OFFSHORE CALIFORNIA

    SciTech Connect (OSTI)

    Steve Horner; Iraj Ershaghi

    2002-04-30T23:59:59.000Z

    Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the original oil in place. To embark upon successful redevelopment and to optimize reservoir management, Venoco intends to investigate, map and characterize field fracture patterns and the reservoir conduit system. State of the art borehole imaging technologies including FMI, dipole sonic and cross-well seismic, interference tests and production logs will be employed to characterize fractures and micro faults. These data along with the existing database will be used for construction of a novel geologic model of the fracture network. Development of an innovative fracture network reservoir simulator is proposed to monitor and manage the aquifer's role in pressure maintenance and water production. The new fracture simulation model will be used for both planning optimal paths for new wells and improving ultimate recovery. In the second phase of this project, the model will be used for the design of a pilot program for downhole water re-injection into the aquifer simultaneously with oil production. Downhole water separation units attached to electric submersible pumps will be used to minimize surface fluid handling thereby improving recoveries per well and field economics while maintaining aquifer support. In cooperation with the DOE, results of the field studies as well as the new models developed and the fracture database will be shared with other operators. Numerous fields producing from the Monterey and analogous fractured reservoirs both onshore and offshore will benefit from the methodologies developed in this project. This report presents a summary of all technical work conducted during the seventh quarter of Budget Period I.

  19. AN ADVANCED FRACTURE CHARACTERIZATION AND WELL PATH NAVIGATION SYSTEM FOR EFFECTIVE RE-DEVELOPMENT AND ENHANCEMENT OF ULTIMATE RECOVERY FROM THE COMPLEX MONTEREY RESERVOIR OF SOUTH ELLWOOD FIELD, OFFSHORE CALIFORNIA

    SciTech Connect (OSTI)

    Steve Horner

    2004-04-29T23:59:59.000Z

    Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the original oil in place. To embark upon successful re-development and to optimize reservoir management, Venoco intends to investigate, map and characterize field fracture patterns and the reservoir conduit system. State of the art borehole imaging technologies including FMI, dipole sonic and cross-well seismic, interference tests and production logs will be employed to characterize fractures and micro faults. These data along with the existing database will be used for construction of a novel geologic model of the fracture network. Development of an innovative fracture network reservoir simulator is proposed to monitor and manage the aquifer's role in pressure maintenance and water production. The new fracture simulation model will be used for both planning optimal paths for new wells and improving ultimate recovery. In the second phase of this project, the model will be used for the design of a pilot program for downhole water re-injection into the aquifer simultaneously with oil production. Downhole water separation units attached to electric submersible pumps will be used to minimize surface fluid handling thereby improving recoveries per well and field economics while maintaining aquifer support. In cooperation with the DOE, results of the field studies as well as the new models developed and the fracture database will be shared with other operators. Numerous fields producing from the Monterey and analogous fractured reservoirs both onshore and offshore will benefit from the methodologies developed in this project. This report presents a summary of all technical work conducted during the second quarter of Budget Period II.

  20. AN ADVANCED FRACTURE CHARACTERIZATION AND WELL PATH NAVIGATION SYSTEM FOR EFFECTIVE RE-DEVELOPMENT AND ENHANCEMENT OF ULTIMATE RECOVERY FROM THE COMPLEX MONTEREY RESERVOIR OF SOUTH ELLWOOD FIELD, OFFSHORE CALIFORNIA

    SciTech Connect (OSTI)

    Steve Horner; Iraj Ershaghi

    2003-07-30T23:59:59.000Z

    Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the original oil in place. To embark upon successful re-development and to optimize reservoir management, Venoco intends to investigate, map and characterize field fracture patterns and the reservoir conduit system. State of the art borehole imaging technologies including FMI, dipole sonic and cross-well seismic, interference tests and production logs will be employed to characterize fractures and micro faults. These data along with the existing database will be used for construction of a novel geologic model of the fracture network. Development of an innovative fracture network reservoir simulator is proposed to monitor and manage the aquifer's role in pressure maintenance and water production. The new fracture simulation model will be used for both planning optimal paths for new wells and improving ultimate recovery. In the second phase of this project, the model will be used for the design of a pilot program for downhole water re-injection into the aquifer simultaneously with oil production. Downhole water separation units attached to electric submersible pumps will be used to minimize surface fluid handling thereby improving recoveries per well and field economics while maintaining aquifer support. In cooperation with the DOE, results of the field studies as well as the new models developed and the fracture database will be shared with other operators. Numerous fields producing from the Monterey and analogous fractured reservoirs both onshore and offshore will benefit from the methodologies developed in this project. This report presents a summary of all technical work conducted during the twelfth quarter of Budget Period I.

  1. AN ADVANCED FRACTURE CHARACTERIZATION AND WELL PATH NAVIGATION SYSTEM FOR EFFECTIVE RE-DEVELOPMENT AND ENHANCEMENT OF ULTIMATE RECOVERY FROM THE COMPLEX MONTEREY RESERVOIR OF SOUTH ELLWOOD FIELD, OFFSHORE CALIFORNIA

    SciTech Connect (OSTI)

    Steve Horner

    2005-01-31T23:59:59.000Z

    Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the original oil in place. To embark upon successful re-development and to optimize reservoir management, Venoco intends to investigate, map and characterize field fracture patterns and the reservoir conduit system. State of the art borehole imaging technologies including FMI, dipole sonic and cross-well seismic, interference tests and production logs will be employed to characterize fractures and micro faults. These data along with the existing database will be used for construction of a novel geologic model of the fracture network. Development of an innovative fracture network reservoir simulator is proposed to monitor and manage the aquifer's role in pressure maintenance and water production. The new fracture simulation model will be used for both planning optimal paths for new wells and improving ultimate recovery. In the second phase of this project, the model will be used for the design of a pilot program for downhole water re-injection into the aquifer simultaneously with oil production. Downhole water separation units attached to electric submersible pumps will be used to minimize surface fluid handling thereby improving recoveries per well and field economics while maintaining aquifer support. In cooperation with the DOE, results of the field studies as well as the new models developed and the fracture database will be shared with other operators. Numerous fields producing from the Monterey and analogous fractured reservoirs both onshore and offshore will benefit from the methodologies developed in this project. This report presents a summary of all technical work conducted during the fifth quarter of Budget Period II.

  2. AN ADVANCED FRACTURE CHARACTERIZATION AND WELL PATH NAVIGATION SYSTEM FOR EFFECTIVE RE-DEVELOPMENT AND ENHANCEMENT OF ULTIMATE RECOVERY FROM THE COMPLEX MONTEREY RESERVOIR OF SOUTH ELLWOOD FIELD, OFFSHORE CALIFORNIA

    SciTech Connect (OSTI)

    Steve Horner; Iraj Ershaghi

    2003-10-31T23:59:59.000Z

    Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the original oil in place. To embark upon successful re-development and to optimize reservoir management, Venoco intends to investigate, map and characterize field fracture patterns and the reservoir conduit system. State of the art borehole imaging technologies including FMI, dipole sonic and cross-well seismic, interference tests and production logs will be employed to characterize fractures and micro faults. These data along with the existing database will be used for construction of a novel geologic model of the fracture network. Development of an innovative fracture network reservoir simulator is proposed to monitor and manage the aquifer's role in pressure maintenance and water production. The new fracture simulation model will be used for both planning optimal paths for new wells and improving ultimate recovery. In the second phase of this project, the model will be used for the design of a pilot program for downhole water re-injection into the aquifer simultaneously with oil production. Downhole water separation units attached to electric submersible pumps will be used to minimize surface fluid handling thereby improving recoveries per well and field economics while maintaining aquifer support. In cooperation with the DOE, results of the field studies as well as the new models developed and the fracture database will be shared with other operators. Numerous fields producing from the Monterey and analogous fractured reservoirs both onshore and offshore will benefit from the methodologies developed in this project. This report presents a summary of all technical work conducted during the final quarter of Budget Period I.

  3. AN ADVANCED FRACTURE CHARACTERIZATION AND WELL PATH NAVIGATION SYSTEM FOR EFFECTIVE RE-DEVELOPMENT AND ENHANCEMENT OF ULTIMATE RECOVERY FROM THE COMPLEX MONTEREY RESERVOIR OF SOUTH ELLWOOD FIELD, OFFSHORE CALIFORNIA

    SciTech Connect (OSTI)

    Steve Horner; Iraj Ershaghi

    2003-01-31T23:59:59.000Z

    Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the original oil in place. To embark upon successful re-development and to optimize reservoir management, Venoco intends to investigate, map and characterize field fracture patterns and the reservoir conduit system. State of the art borehole imaging technologies including FMI, dipole sonic and cross-well seismic, interference tests and production logs will be employed to characterize fractures and micro faults. These data along with the existing database will be used for construction of a novel geologic model of the fracture network. Development of an innovative fracture network reservoir simulator is proposed to monitor and manage the aquifer's role in pressure maintenance and water production. The new fracture simulation model will be used for both planning optimal paths for new wells and improving ultimate recovery. In the second phase of this project, the model will be used for the design of a pilot program for downhole water re-injection into the aquifer simultaneously with oil production. Downhole water separation units attached to electric submersible pumps will be used to minimize surface fluid handling thereby improving recoveries per well and field economics while maintaining aquifer support. In cooperation with the DOE, results of the field studies as well as the new models developed and the fracture database will be shared with other operators. Numerous fields producing from the Monterey and analogous fractured reservoirs both onshore and offshore will benefit from the methodologies developed in this project. This report presents a summary of all technical work conducted during the tenth quarter of Budget Period I.

  4. AN ADVANCED FRACTURE CHARACTERIZATION AND WELL PATH NAVIGATION SYSTEM FOR EFFECTIVE RE-DEVELOPMENT AND ENHANCEMENT OF ULTIMATE RECOVERY FROM THE COMPLEX MONTEREY RESERVOIR OF SOUTH ELLWOOD FIELD, OFFSHORE CALIFORNIA

    SciTech Connect (OSTI)

    Steve Horner

    2005-08-01T23:59:59.000Z

    Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the original oil in place. To embark upon successful re-development and to optimize reservoir management, Venoco intends to investigate, map and characterize field fracture patterns and the reservoir conduit system. State of the art borehole imaging technologies including FMI, dipole sonic and cross-well seismic, interference tests and production logs will be employed to characterize fractures and micro faults. These data along with the existing database will be used for construction of a novel geologic model of the fracture network. Development of an innovative fracture network reservoir simulator is proposed to monitor and manage the aquifer's role in pressure maintenance and water production. The new fracture simulation model will be used for both planning optimal paths for new wells and improving ultimate recovery. In the second phase of this project, the model will be used for the design of a pilot program for downhole water re-injection into the aquifer simultaneously with oil production. Downhole water separation units attached to electric submersible pumps will be used to minimize surface fluid handling thereby improving recoveries per well and field economics while maintaining aquifer support. In cooperation with the DOE, results of the field studies as well as the new models developed and the fracture database will be shared with other operators. Numerous fields producing from the Monterey and analogous fractured reservoirs both onshore and offshore will benefit from the methodologies developed in this project. This report presents a summary of all technical work conducted during the seventh quarter of Budget Period II.

  5. AN ADVANCED FRACTURE CHARACTERIZATION AND WELL PATH NAVIGATION SYSTEM FOR EFFECTIVE RE-DEVELOPMENT AND ENHANCEMENT OF ULTIMATE RECOVERY FROM THE COMPLEX MONTEREY RESERVOIR OF SOUTH ELLWOOD FIELD, OFFSHORE CALIFORNIA

    SciTech Connect (OSTI)

    Steve Horner; Iraj Ershaghi

    2003-05-15T23:59:59.000Z

    Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the original oil in place. To embark upon successful re-development and to optimize reservoir management, Venoco intends to investigate, map and characterize field fracture patterns and the reservoir conduit system. State of the art borehole imaging technologies including FMI, dipole sonic and cross-well seismic, interference tests and production logs will be employed to characterize fractures and micro faults. These data along with the existing database will be used for construction of a novel geologic model of the fracture network. Development of an innovative fracture network reservoir simulator is proposed to monitor and manage the aquifer's role in pressure maintenance and water production. The new fracture simulation model will be used for both planning optimal paths for new wells and improving ultimate recovery. In the second phase of this project, the model will be used for the design of a pilot program for downhole water re-injection into the aquifer simultaneously with oil production. Downhole water separation units attached to electric submersible pumps will be used to minimize surface fluid handling thereby improving recoveries per well and field economics while maintaining aquifer support. In cooperation with the DOE, results of the field studies as well as the new models developed and the fracture database will be shared with other operators. Numerous fields producing from the Monterey and analogous fractured reservoirs both onshore and offshore will benefit from the methodologies developed in this project. This report presents a summary of all technical work conducted during the eleventh quarter of Budget Period I.

  6. An Advanced Fracture Characterization and Well Path Navigation System for Effective Re-Development and Enhancement of Ultimate Recovery from the Complex Monterey Reservoir of South Ellwood Field, Offshore California

    SciTech Connect (OSTI)

    Steve Horner

    2006-01-31T23:59:59.000Z

    Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the original oil in place. To embark upon successful re-development and to optimize reservoir management, Venoco intends to investigate, map and characterize field fracture patterns and the reservoir conduit system. State of the art borehole imaging technologies including FMI, dipole sonic and cross-well seismic, interference tests and production logs will be employed to characterize fractures and micro faults. These data along with the existing database will be used for construction of a novel geologic model of the fracture network. Development of an innovative fracture network reservoir simulator is proposed to monitor and manage the aquifer's role in pressure maintenance and water production. The new fracture simulation model will be used for both planning optimal paths for new wells and improving ultimate recovery. In the second phase of this project, the model will be used for the design of a pilot program for downhole water re-injection into the aquifer simultaneously with oil production. Downhole water separation units attached to electric submersible pumps will be used to minimize surface fluid handling thereby improving recoveries per well and field economics while maintaining aquifer support. In cooperation with the DOE, results of the field studies as well as the new models developed and the fracture database will be shared with other operators. Numerous fields producing from the Monterey and analogous fractured reservoirs both onshore and offshore will benefit from the methodologies developed in this project. This report presents a summary of all technical work conducted during the ninth quarter of Budget Period II.

  7. Language Production General Points about Speech Production

    E-Print Network [OSTI]

    Coulson, Seana

    Language Production #12;General Points about Speech Production 15 speech sounds per second => 2, shall I say `t' or `d'' (Levelt) Production side has gotten less attention in Psycholinguistics than the comprehension side. Evidence for speech production behaviour has until recently relied heavily on speech errors

  8. Denial of Service attacks: path reconstruction for IP traceback using Adjusted Probabilistic Packet Marking

    E-Print Network [OSTI]

    Dube, Raghav

    2005-02-17T23:59:59.000Z

    and Ramamohanarao [18] propose a marking scheme wherein routers mark the packets with a adjusted probability. The packet marking probability is inversely proportional to the number of hops of the router from the source of the packet. The marking probability..., Peng, Leckie and Ramamohanarao [18] propose a mark- ing probability, pd = 1/d, where d is the distance (number of hops) of the router from the source of the packet. Assume an attack path of length k. By this we mean that there are k routers...

  9. Magnetized Target Fusion (MTF): A Low-Cost Fusion Development Path

    SciTech Connect (OSTI)

    Lindemuth, I.R.; Siemon, R.E.; Kirkpatrick, R.C.; Reinovsky, R.E.

    1998-10-19T23:59:59.000Z

    Simple transport-based scaling laws are derived to show that a density and time regime intermediate between conventional magnetic confinement and conventional inertial confinement offers attractive reductions in system size and energy when compared to magnetic confinement and attractive reductions in heating power and intensity when compared to inertial confinement. This intermediate parameter space appears to be readily accessible by existing and near term pulsed power technologies. Hence, the technology of the Megagauss conference opens up an attractive path to controlled thermonuclear fusion.

  10. Single Neutron Transfer Experiments Close to the r-Process Path

    SciTech Connect (OSTI)

    Grzywacz-Jones, Kate L [ORNL; Adekola, Aderemi S [ORNL; Bardayan, Daniel W [ORNL; Blackmon, Jeff C [ORNL; Chae, Kyung Yuk [ORNL; Chipps, K. [Colorado School of Mines, Golden; Cizewski, Jolie [ORNL; Dean, David Jarvis [ORNL; Erikson, Luke [Colorado School of Mines, Golden; Fitzgerald, R. P. [University of North Carolina, Chapel Hill; Gaddis, A. L. [Furman University; Greife, U. [Colorado School of Mines, Golden; Harlin, Christopher W [ORNL; Hatarik, Robert [Rutgers University; Howard, Joshua A [ORNL; Johnson, Micah [ORNL; Kozub, R. L. [Tennessee Technological University; Liang, J Felix [ORNL; Livesay, Jake [ORNL; Ma, Zhanwen [ORNL; Moazen, Brian [University of Tennessee, Knoxville (UTK); O'Malley, Patrick [Rutgers University; Nesaraja, Caroline D [ORNL; Pain, S. D. [Rutgers University; Patterson, N. P. [University of Surrey, UK; Paulauskas, Stanley V [ORNL; Shapira, Dan [ORNL; ShrinerJr., J. F. [Tennessee Technological University; Sissom, D. J. [Tennessee Technological University; Smith, Michael Scott [ORNL; Swan, T. P. [University of Surrey, UK; Thomas, J. S. [Rutgers University

    2007-01-01T23:59:59.000Z

    The first measurements using the (d, p) transfer reaction to study single- particle states in nuclei on the expected r-process path have been made at the Holifield Radioactive Ion Beam Facility. The shell closure at N = 50 has been crossed using the 82Ge(d, p) and 84Se(d, p) reactions. The prop- erties of the lowest-lying states have been determined. Furthermore, the 132Sn(d, p) reaction has been used for the first time to populate single- particle states in 133Sn.

  11. National facility for advanced computational science: A sustainable path to scientific discovery

    SciTech Connect (OSTI)

    Simon, Horst; Kramer, William; Saphir, William; Shalf, John; Bailey, David; Oliker, Leonid; Banda, Michael; McCurdy, C. William; Hules, John; Canning, Andrew; Day, Marc; Colella, Philip; Serafini, David; Wehner, Michael; Nugent, Peter

    2004-04-02T23:59:59.000Z

    Lawrence Berkeley National Laboratory (Berkeley Lab) proposes to create a National Facility for Advanced Computational Science (NFACS) and to establish a new partnership between the American computer industry and a national consortium of laboratories, universities, and computing facilities. NFACS will provide leadership-class scientific computing capability to scientists and engineers nationwide, independent of their institutional affiliation or source of funding. This partnership will bring into existence a new class of computational capability in the United States that is optimal for science and will create a sustainable path towards petaflops performance.

  12. The Path to a 50% Thermal Efficient Engine | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage ¬Ľof EnergyThe Energy Department Feeds11,IndustrialDepartment of2The Path

  13. 2012-2013 PathSci Kick-Off Event | Princeton Plasma Physics Lab

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered¬ČPNGExperience hands-onASTROPHYSICS H. I. Park, L.2State of-2013 PathSci

  14. Modeling the Oil Transition: A Summary of the Proceedings of the DOE/EPA Workshop on the Economic and Environmental Implications of Global Energy Transitions

    SciTech Connect (OSTI)

    Greene, David L [ORNL

    2007-02-01T23:59:59.000Z

    The global energy system faces sweeping changes in the next few decades, with potentially critical implications for the global economy and the global environment. It is important that global institutions have the tools necessary to predict, analyze and plan for such massive change. This report summarizes the proceedings of an international workshop concerning methods of forecasting, analyzing, and planning for global energy transitions and their economic and environmental consequences. A specific case, it focused on the transition from conventional to unconventional oil and other energy sources likely to result from a peak in non-OPEC and/or global production of conventional oil. Leading energy models from around the world in government, academia and the private sector met, reviewed the state-of-the-art of global energy modeling and evaluated its ability to analyze and predict large-scale energy transitions.

  15. Release Path Temperatures of Shock-Compressed Tin from Dynamic Reflectance and Radiance Measurements

    SciTech Connect (OSTI)

    La Lone, B. M. [NSTec; Stevens, G. D. [NSTec; Turley, W. D. [NSTec; Holtkamp, D. B. [LANL; Iverson, A. J. [NSTec; Hixson, R. S. [NSTec; Veeser, L. R. [NSTec

    2013-08-01T23:59:59.000Z

    Dynamic reflectance and radiance measurements were conducted for tin samples shock compressed to 35 GPa and released to 15 GPa using high explosives. We determined the reflectance of the tin samples glued to lithium fluoride windows using an integrating sphere with an internal xenon flashlamp as an illumination source. The dynamic reflectance (R) was determined at near normal incidence in four spectral bands with coverage in visible and near-infrared spectra. Uncertainties in R/R0 are < 2%, and uncertainties in absolute reflectance are < 5%. In complementary experiments, thermal radiance from the tin/glue/lithium fluoride interface was recorded with similar shock stress and spectral coverage as the reflectance measurements. The two sets of experiments were combined to obtain the temperature history of the tin surface with an uncertainty of < 2%. The stress at the interface was determined from photonic Doppler velocimetry and combined with the temperatures to obtain temperature-stress release paths for tin. We discuss the relationship between the experimental release paths and release isentropes that begin on the principal shock Hugoniot.

  16. A Design Path for Hierarchical Self-Assembly of Patchy Colloids

    E-Print Network [OSTI]

    Erik Edlund; Oskar Lindgren; Martin Nilsson Jacobi

    2014-05-12T23:59:59.000Z

    Patchy colloids are promising candidates for building blocks in directed self-assembly. To be successful the surface patterns need to both be simple enough to be synthesized, while feature-rich enough to cause the colloids to self-assemble into desired structures. Achieving this is a challenge for traditional synthesis methods. Recently it has been suggested that the surface pattern themselves can be made to self-assemble. In this paper we show that a wide range of functional structures can be made to self-assemble using this approach. More generally we present a design path for hierarchical targeted self-assembly of patchy colloids. At the level of the surface structure, we use a predictive method utilizing universality of patterns of stripes and spots, coupled with stoichiometric constraints, to cause highly specific and functional patterns to self-assemble on spherical surfaces. We use a minimalistic model of an alkanethiol on gold as a model system and demonstrate that, even with limited control over the interaction between surface constituents, we can obtain patterns that causes the colloids themselves to self-assemble into various complex geometric structures. We demonstrate how variations of the same design path cause in-silico self-assembly of strings, membranes, cubic and spherical aggregates, as well as various crystalline patterns.

  17. Accelerating ab initio path integral molecular dynamics with multilevel sampling of potential surface

    E-Print Network [OSTI]

    Hua Y. Geng

    2014-12-19T23:59:59.000Z

    A multilevel approach to sample the potential energy surface in a path integral formalism is proposed. The purpose is to reduce the required number of ab initio evaluations of energy and forces in ab initio path integral molecular dynamics (AI-PIMD) simulation, without compromising the overall accuracy. To validate the method, the internal energy and free energy of an Einstein crystal are calculated and compared with the analytical solutions. As a preliminary application, we assess the performance of the method in a realistic model, the FCC phase of dense atomic hydrogen, in which the calculated result shows that the acceleration rate is about 3 to 4 fold for a two-level implementation, and can be increased to 10 times if extrapolation is used. With only 16 beads used for the ab initio potential sampling, this method gives a well converged internal energy. The residual error in pressure is just about 3 GPa, whereas it is about 20 GPa for a plain AI-PIMD calculation with the same number of beads. The vibrational free energy of the FCC phase of dense hydrogen at 300 K is also calculated with an AI-PIMD thermodynamic integration method, which gives a result of about 0.51 eV/proton at a density of $r_{s}=0.912$.

  18. New Technique for Retrieving Liquid Water Path over Land using Satellite Microwave Observations

    SciTech Connect (OSTI)

    Deeter, M.N.; Vivekanandan, J.

    2005-03-18T23:59:59.000Z

    We present a new methodology for retrieving liquid water path over land using satellite microwave observations. As input, the technique exploits the Advanced Microwave Scanning Radiometer for earth observing plan (EOS) (AMSR-E) polarization-difference signals at 37 and 89 GHz. Regression analysis performed on model simulations indicates that over variable atmospheric and surface conditions the polarization-difference signals can be simply parameterized in terms of the surface emissivity polarization difference ({Delta}{var_epsilon}), surface temperature, liquid water path (LWP), and precipitable water vapor (PWV). The resulting polarization-difference parameterization (PDP) enables fast and direct (noniterative) retrievals of LWP with minimal requirements for ancillary data. Single- and dual-channel retrieval methods are described and demonstrated. Data gridding is used to reduce the effects of instrumental noise. The methodology is demonstrated using AMSR-E observations over the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site during a six day period in November and December, 2003. Single- and dual-channel retrieval results mostly agree with ground-based microwave retrievals of LWP to within approximately 0.04 mm.

  19. Biological production of products from waste gases

    DOE Patents [OSTI]

    Gaddy, James L. (Fayetteville, AR)

    2002-01-22T23:59:59.000Z

    A method and apparatus are designed for converting waste gases from industrial processes such as oil refining, and carbon black, coke, ammonia, and methanol production, into useful products. The method includes introducing the waste gases into a bioreactor where they are fermented to various products, such as organic acids, alcohols, hydrogen, single cell protein, and salts of organic acids by anaerobic bacteria within the bioreactor. These valuable end products are then recovered, separated and purified.

  20. Covered Product Category: Cool Roof Products

    Broader source: Energy.gov [DOE]

    FEMP provides acquisition guidance across a variety of product categories, including cool roof products, which are an ENERGY STARģ-qualified product category. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

  1. Aesculap, Inc. Air Products

    E-Print Network [OSTI]

    Napier, Terrence

    Aesculap, Inc. Air Products Air Products Foundation Alaric Compliance Services, LLC Alvin H. Butz & Herger, Inc. Sodexo Campus Services Sodexo Inc. and Affiliates Stupp Bros., Inc. Sugarbush Products, Inc

  2. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    in a variety of rubber and plastic products, thermal incineration of waste tires for production of electricity rubber in asphalt mixes, (ii) thermal incineration of worn-out tires for the production of electricity

  3. Evidence for a New Path to the Self-Sustainment of the Thermonuclear Fusion Reactions in Magnetically Confined Burning Plasma Experiments

    E-Print Network [OSTI]

    Evidence for a New Path to the Self-Sustainment of the Thermonuclear Fusion Reactions in Magnetically Confined Burning Plasma Experiments

  4. Nuclear quantum effects in liquid water from path-integral simulations using an ab initio force matching approach

    E-Print Network [OSTI]

    Thomas Spura; Christopher John; Scott Habershon; Thomas D. KŁhne

    2014-02-06T23:59:59.000Z

    We have applied path integral simulations, in combination with new ab initio based water potentials, to investigate nuclear quantum effects in liquid water. Because direct ab initio path integral simulations are computationally expensive, a flexible water model is parameterized by force-matching to density functional theory-based molecular dynamics simulations. The resulting effective potentials provide an inexpensive replacement for direct ab inito molecular dynamics simulations and allow efficient simulation of nuclear quantum effects. Static and dynamic properties of liquid water at ambient conditions are presented and the role of nuclear quantum effects, exchange-correlation functionals and dispersion corrections are discussed in regards to reproducing the experimental properties of liquid water.

  5. Productivity enhancement through process integration

    E-Print Network [OSTI]

    Alotaibi, Meteab Aujian

    2006-10-30T23:59:59.000Z

    of unreacted raw materials. Path equations are tailored to provide the appropriate level of detail for modeling process performance as a function of the optimization variables pertaining to design and operating variables. Interval analysis is used...

  6. Systematic speedup of path integrals of a generic N-fold discretized theory

    SciTech Connect (OSTI)

    Bogojevic, A.; Balaz, A.; Belic, A. [Institute of Physics, P.O. Box 57, 11001 Belgrade (Serbia and Montenegro)

    2005-08-01T23:59:59.000Z

    We present and discuss a detailed derivation of an analytical method that systematically improves the convergence of path integrals of a generic N-fold discretized theory. We develop an explicit procedure for calculating a set of effective actions S{sup (p)}, for p=1,2,3,... which have the property that they lead to the same continuum amplitudes as the starting action, but converge to that continuum limit ever faster. Discretized amplitudes calculated using the p-level effective action differ from the continuum limit by a term of order 1/N{sup p}. We obtain explicit expressions for the effective actions for levels p{<=}9. We end by analyzing the speedup of Monte Carlo simulations of two different models: an anharmonic oscillator with quartic coupling and a particle in a modified Poeschl-Teller potential.

  7. First-principles path-integral renormalization-group method for Coulombic many-body systems

    SciTech Connect (OSTI)

    Kojo, Masashi; Hirose, Kikuji [Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871 (Japan)

    2009-10-15T23:59:59.000Z

    An approach for obtaining the ground state of Coulombic many-body systems is presented. This approach is based on the path-integral renormalization-group method with nonorthogonal Slater determinants, is free of the negative sign problem, and can handle higher dimensional systems with consideration of the correlation effect. Furthermore, it can be easily extended to the multicomponent quantum systems that contain more than two kinds of quantum particles. According to our results obtained with the present approach, it achieves the same accuracy as the variational Monte Carlo method with a few Slater determinants and enables us to study the entire ground state consisting of electrons and nuclei without the need to use the Born-Oppenheimer approximation.

  8. Four dimensional quantum gravity: The covariant path integral and quantization of the conformal factor

    SciTech Connect (OSTI)

    Mottola, E.

    1993-03-01T23:59:59.000Z

    After first reviewing the issue of vacuum energy (the cosmological constant problem) in the Einstein theory, the covariant path integral for gravity in four dimensions is constructed. The problem of vacuum energy requires determining the correct ground state of the quantum theory of gravity, and as such is an infrared problem, arising prior to and independently of the physics of the Planck scale. It is addressed in these lectures by studying the infrared fixed point of the low energy effective action of the conformal factor generated by the quantum trace anomaly in four dimensions. The infrared fixed point of this effective theory describes a conformally invariant phase of gravity with a vanishing effective cosmological term.

  9. Four dimensional quantum gravity: The covariant path integral and quantization of the conformal factor

    SciTech Connect (OSTI)

    Mottola, E.

    1993-01-01T23:59:59.000Z

    After first reviewing the issue of vacuum energy (the cosmological constant problem) in the Einstein theory, the covariant path integral for gravity in four dimensions is constructed. The problem of vacuum energy requires determining the correct ground state of the quantum theory of gravity, and as such is an infrared problem, arising prior to and independently of the physics of the Planck scale. It is addressed in these lectures by studying the infrared fixed point of the low energy effective action of the conformal factor generated by the quantum trace anomaly in four dimensions. The infrared fixed point of this effective theory describes a conformally invariant phase of gravity with a vanishing effective cosmological term.

  10. Walking the PathóA New Journey to Explore and Discover through Visual Analytics

    SciTech Connect (OSTI)

    Wong, Pak C.; Rose, Stuart J.; Chin, George; Frincke, Deb; May, Richard A.; Posse, Christian; Sanfilippo, Antonio P.; Thomas, James J.

    2006-12-01T23:59:59.000Z

    Visual representations are essential aids to human cognitive tasks and are valued to the extent that they provide stable and external reference points upon which dynamic activities and thought processes may be calibrated and upon which models and theories can be tested and confirmed. The active use and manipulation of visual representations makes many complex and intensive cognitive tasks feasible. As described in the recently published ''Illuminating the Path'', visual analytics is ''the science of analytical reasoning facilitated by interactive visual interfaces''. We describe research and development at PNNL focused on improving the value that interactive visual representations provide to persons engaged in complex cognitive tasks. We describe work at PNNL that carries forward research from multiple disciplines with a goal to improve the capability of visual representations and present examples whose aim is to improve the extraction, and reasoning about information, knowledge, and data.

  11. Optimized Generation of Data-Path from C Codes for FPGAs

    E-Print Network [OSTI]

    Guo, Zhi; Najjar, Walid; Vissers, Kees

    2011-01-01T23:59:59.000Z

    FPGAs, as computing devices, offer significant speedup over microprocessors. Furthermore, their configurability offers an advantage over traditional ASICs. However, they do not yet enjoy high-level language programmability, as microprocessors do. This has become the main obstacle for their wider acceptance by application designers. ROCCC is a compiler designed to generate circuits from C source code to execute on FPGAs, more specifically on CSoCs. It generates RTL level HDLs from frequently executing kernels in an application. In this paper, we describe ROCCC's system overview and focus on its data path generation. We compare the performance of ROCCC-generated VHDL code with that of Xilinx IPs. The synthesis result shows that ROCCC-generated circuit takes around 2x ~ 3x area and runs at comparable clock rate.

  12. Mass measurements near the $r$-process path using the Canadian Penning Trap mass spectrometer

    E-Print Network [OSTI]

    J. Van Schelt; D. Lascar; G. Savard; J. A. Clark; S. Caldwell; A. Chaudhuri; J. Fallis; J. P. Greene; A. F. Levand; G. Li; K. S. Sharma; M. G. Sternberg; T. Sun; B. J. Zabransky

    2012-04-09T23:59:59.000Z

    The masses of 40 neutron-rich nuclides from Z = 51 to 64 were measured at an average precision of $\\delta m/m= 10^{-7}$ using the Canadian Penning Trap mass spectrometer at Argonne National Laboratory. The measurements, of fission fragments from a $^{252}$Cf spontaneous fission source in a helium gas catcher, approach the predicted path of the astrophysical $r$ process. Where overlap exists, this data set is largely consistent with previous measurements from Penning traps, storage rings, and reaction energetics, but large systematic deviations are apparent in $\\beta$-endpoint measurements. Differences in mass excess from the 2003 Atomic Mass Evaluation of up to 400 keV are seen, as well as systematic disagreement with various mass models.

  13. Turbine exhaust diffuser flow path with region of reduced total flow area

    DOE Patents [OSTI]

    Orosa, John A.

    2012-12-25T23:59:59.000Z

    An exhaust diffuser system and method for a turbine engine includes an inner boundary and an outer boundary with a flow path defined therebetween. The inner boundary is defined at least in part by a hub that has an upstream end and a downstream end. The outer boundary has a region in which the outer boundary extends radially inward toward the hub. The region can begin at a point that is substantially aligned with the downstream end of the hub or, alternatively, at a point that is proximately upstream of the downstream end of the hub. The region directs at least a portion of an exhaust flow in the diffuser toward the hub. As a result, the exhaust diffuser system and method can achieve the performance of a long hub system while enjoying the costs of a short hub system.

  14. Multi-path transportation futures study : vehicle characterization and scenario analyses.

    SciTech Connect (OSTI)

    Plotkin, S. E.; Singh, M. K.; Energy Systems; TA Engineering; ORNL

    2009-12-03T23:59:59.000Z

    Projecting the future role of advanced drivetrains and fuels in the light vehicle market is inherently difficult, given the uncertainty (and likely volatility) of future oil prices, inadequate understanding of likely consumer response to new technologies, the relative infancy of several important new technologies with inevitable future changes in their performance and costs, and the importance - and uncertainty - of future government marketplace interventions (e.g., new regulatory standards or vehicle purchase incentives). This Multi-Path Transportation Futures (MP) Study has attempted to improve our understanding of this future role by examining several scenarios of vehicle costs, fuel prices, government subsidies, and other key factors. These are projections, not forecasts, in that they try to answer a series of 'what if' questions without assigning probabilities to most of the basic assumptions.

  15. Driving it home: choosing the right path for fueling North America's transportation future

    SciTech Connect (OSTI)

    Ann Bordetsky; Susan Casey-Lefkowitz; Deron Lovaas; Elizabeth Martin-Perera; Melanie Nakagawa; Bob Randall; Dan Woynillowicz

    2007-06-15T23:59:59.000Z

    North America faces an energy crossroads. With the world fast approaching the end of cheap, plentiful conventional oil, we must choose between developing ever-dirtier sources of fossil fuels -- at great cost to our health and environment -- or setting a course for a more sustainable energy future of clean, renewable fuels. This report explores the full scale of the damage done by attempts to extract oil from liquid coal, oil shale, and tar sands; examines the risks for investors of gambling on these dirty fuel sources; and lays out solutions for guiding us toward a cleaner fuel future. Table of contents: Executive Summary; Chapter 1: Transportation Fuel at a Crossroads; Chapter 2: Canadian Tar Sands: Scraping the Bottom of the Barrel in Endangered Forests; Chapter 3: Oil Shale Extraction: Drilling Through the American West; Chapter 4: Liquid Coal: A 'Clean Fuel' Mirage; Chapter 5: The Investment Landscape: Dirty Fuels Are Risky Business; Chapter 6: The Clean Path for Transportation and Conclusion.

  16. Shear viscosity of hot nuclear matter by the mean free path method

    E-Print Network [OSTI]

    D. Q. Fang; Y. G. Ma; C. L. Zhou

    2014-04-17T23:59:59.000Z

    The shear viscosity of hot nuclear matter is investigated by using the mean free path method within the framework of IQMD model. Finite size nuclear sources at different density and temperature are initialized based on the Fermi-Dirac distribution. The results show that shear viscosity to entropy density ratio decreases with the increase of temperature and tends toward a constant value for $\\rho\\sim\\rho_0$, which is consistent with the previous studies on nuclear matter formed during heavy-ion collisions. At $\\rho\\sim\\frac{1}{2}\\rho_0$, a minimum of $\\eta/s$ is seen at around $T=10$ MeV and a maximum of the multiplicity of intermediate mass fragment ($M_{\\text{IMF}}$) is also observed at the same temperature which is an indication of the liquid-gas phase transition.

  17. Linear response theory and neutrino mean free path using Brussels-Montreal Skyrme functionals

    E-Print Network [OSTI]

    A. Pastore; M. Martini; D. Davesne; J. Navarro; S. Goriely; N. Chamel

    2014-08-12T23:59:59.000Z

    The Brussels-Montreal Skyrme functionals have been successful to describe properties of both finite nuclei and infinite homogeneous nuclear matter. In their latest version, these functionals have been equipped with two extra density-dependent terms in order to reproduce simultaneously ground state properties of nuclei and infinite nuclear matter properties while avoiding at the same time the arising of ferromagnetic instabilities. In the present article, we extend our previous results of the linear response theory to include such extra terms at both zero and finite temperature in pure neutron matter. The resulting formalism is then applied to derive the neutrino mean free path. The predictions from the Brussels-Montreal Skyrme functionals are compared with ab-initio methods.

  18. from Isotope Production Facility

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

    Cancer-fighting treatment gets boost from Isotope Production Facility April 13, 2012 Isotope Production Facility produces cancer-fighting actinium 2:32 Isotope cancer treatment...

  19. Control of reactor coolant flow path during reactor decay heat removal

    DOE Patents [OSTI]

    Hunsbedt, Anstein N. (Los Gatos, CA)

    1988-01-01T23:59:59.000Z

    An improved reactor vessel auxiliary cooling system for a sodium cooled nuclear reactor is disclosed. The sodium cooled nuclear reactor is of the type having a reactor vessel liner separating the reactor hot pool on the upstream side of an intermediate heat exchanger and the reactor cold pool on the downstream side of the intermediate heat exchanger. The improvement includes a flow path across the reactor vessel liner flow gap which dissipates core heat across the reactor vessel and containment vessel responsive to a casualty including the loss of normal heat removal paths and associated shutdown of the main coolant liquid sodium pumps. In normal operation, the reactor vessel cold pool is inlet to the suction side of coolant liquid sodium pumps, these pumps being of the electromagnetic variety. The pumps discharge through the core into the reactor hot pool and then through an intermediate heat exchanger where the heat generated in the reactor core is discharged. Upon outlet from the heat exchanger, the sodium is returned to the reactor cold pool. The improvement includes placing a jet pump across the reactor vessel liner flow gap, pumping a small flow of liquid sodium from the lower pressure cold pool into the hot pool. The jet pump has a small high pressure driving stream diverted from the high pressure side of the reactor pumps. During normal operation, the jet pumps supplement the normal reactor pressure differential from the lower pressure cold pool to the hot pool. Upon the occurrence of a casualty involving loss of coolant pump pressure, and immediate cooling circuit is established by the back flow of sodium through the jet pumps from the reactor vessel hot pool to the reactor vessel cold pool. The cooling circuit includes flow into the reactor vessel liner flow gap immediate the reactor vessel wall and containment vessel where optimum and immediate discharge of residual reactor heat occurs.

  20. Analytic solutions for seismic travel time and ray path geometry through simple velocity models.

    SciTech Connect (OSTI)

    Ballard, Sanford

    2007-12-01T23:59:59.000Z

    The geometry of ray paths through realistic Earth models can be extremely complex due to the vertical and lateral heterogeneity of the velocity distribution within the models. Calculation of high fidelity ray paths and travel times through these models generally involves sophisticated algorithms that require significant assumptions and approximations. To test such algorithms it is desirable to have available analytic solutions for the geometry and travel time of rays through simpler velocity distributions against which the more complex algorithms can be compared. Also, in situations where computational performance requirements prohibit implementation of full 3D algorithms, it may be necessary to accept the accuracy limitations of analytic solutions in order to compute solutions that satisfy those requirements. Analytic solutions are described for the geometry and travel time of infinite frequency rays through radially symmetric 1D Earth models characterized by an inner sphere where the velocity distribution is given by the function V (r) = A-Br{sup 2}, optionally surrounded by some number of spherical shells of constant velocity. The mathematical basis of the calculations is described, sample calculations are presented, and results are compared to the Taup Toolkit of Crotwell et al. (1999). These solutions are useful for evaluating the fidelity of sophisticated 3D travel time calculators and in situations where performance requirements preclude the use of more computationally intensive calculators. It should be noted that most of the solutions presented are only quasi-analytic. Exact, closed form equations are derived but computation of solutions to specific problems generally require application of numerical integration or root finding techniques, which, while approximations, can be calculated to very high accuracy. Tolerances are set in the numerical algorithms such that computed travel time accuracies are better than 1 microsecond.

  1. Extended Hamilton-Lagrange formalism and its application to Feynman's path integral for relativistic quantum physics

    E-Print Network [OSTI]

    JŁrgen Struckmeier

    2008-11-04T23:59:59.000Z

    We present a consistent and comprehensive treatise on the foundations of the extended Hamilton-Lagrange formalism--where the dynamical system is parameterized along a general system evolution parameter $s$, and the time $t$ is treated as a dependent variable $t(s)$ on equal footing with all other configuration space variables $q^{i}(s)$. In the action principle, the conventional classical action $L dt$ is then replaced by the generalized action $L_{1}ds$, with $L$ and $L_{1}$ denoting the conventional and the extended Lagrangian, respectively. It is shown that a unique correlation of $L_{1}$ and $L$ exists if we refrain from performing simultaneously a transformation of the dynamical variables. With the appropriate correlation of $L_{1}$ and $L$ in place, the extension of the formalism preserves its canonical form. In the extended formalism, the dynamical system is described as a constrained motion within an extended space. We show that the value of the constraint and the parameter $s$ constitutes an additional pair of canonically conjugate variables. In the corresponding quantum system, we thus encounter an additional uncertainty relation. We derive the extended Lagrangian $L_{1}$ of a classical relativistic point particle in an external electromagnetic field and show that the generalized path integral approach yields the Klein-Gordon equation as the corresponding quantum description. We furthermore derive the space-time propagator for a free relativistic particle from its extended Lagrangian $L_{1}$. These results can be regarded as the proof of principle of the relativistic generalization of Feynman's path integral approach to quantum physics.

  2. Leak-Path Factor Analysis for the Nuclear Materials Storage Facility

    SciTech Connect (OSTI)

    Shaffer, C.; Leonard, M.

    1999-06-13T23:59:59.000Z

    Leak-path factors (LPFs) were calculated for the Nuclear Materials Storage Facility (NMSF) located in the Plutonium Facility, Building 41 at the Los Alamos National Laboratory Technical Area 55. In the unlikely event of an accidental fire powerful enough to fail a container holding actinides, the subsequent release of oxides, modeled as PuO{sub 2} aerosols, from the facility and into the surrounding environment was predicted. A 1-h nondestructive assay (NDA) laboratory fire accident was simulated with the MELCOR severe accident analysis code. Fire-driven air movement along with wind-driven air infiltration transported a portion of these actinides from the building. This fraction is referred to as the leak-path factor. The potential effect of smoke aerosol on the transport of the actinides was investigated to verify the validity of neglecting the smoke as conservative. The input model for the NMSF consisted of a system of control volumes, flow pathways, and surfaces sufficient to model the thermal-hydraulic conditions within the facility and the aerosol transport data necessary to simulate the transport of PuO{sub 2} particles. The thermal-hydraulic, heat-transfer, and aerosol-transport models are solved simultaneously with data being exchanged between models. A MELCOR input model was designed such that it would reproduce the salient features of the fire per the corresponding CFAST calculation. Air infiltration into and out of the facility would be affected strongly by wind-driven differential pressures across the building. Therefore, differential pressures were applied to each side of the building according to guidance found in the ASHRAE handbook using a standard-velocity head equation with a leading multiplier to account for the orientation of the wind with the building. The model for the transport of aerosols considered all applicable transport processes, but the deposition within the building clearly was dominated by gravitational settling.

  3. ACHIEVING THE REQUIRED COOLANT FLOW DISTRIBUTION FOR THE ACCELERATOR PRODUCTION OF TRITIUM (APT) TUNGSTEN NEUTRON SOURCE

    SciTech Connect (OSTI)

    D. SIEBE; K. PASAMEHMETOGLU

    2000-11-01T23:59:59.000Z

    The Accelerator Production of Tritium neutron source consists of clad tungsten targets, which are concentric cylinders with a center rod. These targets are arranged in a matrix of tubes, producing a large number of parallel coolant paths. The coolant flow required to meet thermal-hydraulic design criteria varies with location. This paper describes the work performed to ensure an adequate coolant flow for each target for normal operation and residual heat-removal conditions.

  4. Meats & Products Agricultural Inputs

    E-Print Network [OSTI]

    Collett Jr., Jeffrey L.

    Meats & Products Agricultural Inputs Processing Idaho B20 C C B Meats and Livestock Products Index to agriculture? Legend Overall weighted grade Weighted rank Northwest Midwest Southwest East Meats & ProductsProcessingessing Maine B11 B A A Meats & Products Agricultural Inputs Processing New York F49 F F F soductsoducts

  5. Verifying UAV Path Planning: A Formal Approach of Choice. Antonios Tsourdos, Brian A White and Rafal bikowski

    E-Print Network [OSTI]

    Fisher, Michael

    Verifying UAV Path Planning: A Formal Approach of Choice. Antonios Tsourdos, Brian A White - RMCS Shrivenham, Swindon SN6 8LA United Kingdom When deploying multiple UAVs each with its own sensor platform into an unstructured environment, the swarm of these sensor platforms, i.e. the team of UAVs needs

  6. A Born-Oppenheimer approximation for path integrals with an application to electron solvation in polarizable fluids

    E-Print Network [OSTI]

    Berne, Bruce J.

    A Born-Oppenheimer approximation for path integrals with an application to electron solvation (Received 8 February 1993; accepted 13 April 1993) The Born-Oppenheimer approximation is introduced this to simulations. We devise a new adiabatic expression which we call the free energy Born-Oppenheimer approximation

  7. Path-integral solution for a two-dimensional model with axial-vector-current--pseudoscalar derivative interaction

    SciTech Connect (OSTI)

    Botelho, L.C.L.

    1985-03-15T23:59:59.000Z

    We study a two-dimensional quantum field model with axial-vector-current--pseudoscalar derivative interaction using path-integral methods. We construct an effective Lagrangian by performing a chiral change in the fermionic variables leading to an exact solution of the model.

  8. One-skeleton galleries, the path model and a generalization of Macdonald's formula for Hall-Littlewood polynomials

    E-Print Network [OSTI]

    Boyer, Edmond

    One-skeleton galleries, the path model and a generalization of Macdonald's formula for Hall to Macdonald's formula. Contents 1 Introduction 2 2 Preliminaries 5 2.1 Schubert varieties in the affine and the associated Weyl group combinatorics [20]. As a consequence, we get a generalization of Macdonald's formula

  9. Path Planning and Control for AERCam, a Free-ying Inspection Robot in Howie Choset David Kortenkamp

    E-Print Network [OSTI]

    Choset, Howie

    Path Planning and Control for AERCam, a Free- ying Inspection Robot in Space. Howie Choset David planning and control for space inspection appli- cations. The robot is the rst generation of a free- ying is a testbed for a free- ying space robot. The AERCam IGD consists of several hardware components and is shown

  10. Quick start user%3CU%2B2019%3Es guide for the PATH/AWARE decision support system.

    SciTech Connect (OSTI)

    Knowlton, Robert G.; Melton, Brad Joseph; Einfeld, Wayne; Tucker, Mark D; Franco, David Oliver [Sandia National Laboratories, Livermore, CA; Yang, Lynn I. [Sandia National Laboratories, Livermore, CA

    2013-06-01T23:59:59.000Z

    The Prioritization Analysis Tool for All-Hazards/Analyzer for Wide Area Restoration Effectiveness (PATH/AWARE) software system, developed by Sandia National Laboratories, is a comprehensive decision support tool designed to analyze situational awareness, as well as response and recovery actions, following a wide-area release of chemical, biological or radiological materials. The system provides capability to prioritize critical infrastructure assets and services for restoration. It also provides a capability to assess resource needs (e.g., number of sampling teams, laboratory capacity, decontamination units, etc.), timelines for consequence management activities, and costs. PATH/AWARE is a very comprehensive tool set with a considerable amount of database information managed through a Microsoft SQL (Structured Query Language) database engine, a Geographical Information System (GIS) engine that provides comprehensive mapping capabilities, as well as comprehensive decision logic to carry out the functional aspects of the tool set. This document covers the basic installation and operation of the PATH/AWARE tool in order to give the user enough information to start using the tool. A companion users manual is under development with greater specificity of the PATH/AWARE functionality.

  11. A Minimum Free Energy Reaction Path for the E2 Reaction between Fluoro Ethane and a Fluoride Ion

    E-Print Network [OSTI]

    Nielsen, Steven O.

    A Minimum Free Energy Reaction Path for the E2 Reaction between Fluoro Ethane and a Fluoride Ion, such as the mechanism and the free-energy profile, remains an important challenge not only for enzyme catalysis1 of the reaction free-energy profile is very cumbersome with constrained molecular dynamics (MD) and umbrella

  12. Suboptimal Path Planning and Control for AERCamjSprint: Final J.C. Trinkle and S. Sudarsky

    E-Print Network [OSTI]

    Trinkle, Jeff

    is developing a "flying" semi-autonomous"eyeball" to allow astronauts to visually inspect space vehicles technique for planning collision-free, fuel-efficient paths and thruster controls for moving Sprint from for Sprint to follow autonomously. Thereby freeingthe astronaut for other tasks. The plannerdiscussedherein

  13. The use of the stationary phase method as a mathematical tool to determine the path of optical beams

    E-Print Network [OSTI]

    Carvalho, Silv‚nia A

    2015-01-01T23:59:59.000Z

    We use the stationary phase method to determine the path of optical beams which propagate through a dielectric block. In the presence of partial internal reflection, we recover the geometrical result obtained by using the Snell law. For total internal reflection, the stationary phase method overreaches the Snell law predicting the Goos-Haenchen shift.

  14. The New Global War on Malaria 305 The global control of malaria has followed a tortuous path during the past

    E-Print Network [OSTI]

    The New Global War on Malaria 305 The global control of malaria has followed a tortuous path during of the past century. The New Global War on Malaria Jeffrey D. Sachs and Raymond G. Chambers #12;Key Health-free 1965 #12;The New Global War on Malaria 307 It is important to understand each of these ecological

  15. Path-Quality Monitoring in the Presence of Adversaries This is the full version from March 27, 2008

    E-Print Network [OSTI]

    Barak, Boaz

    design and analyze path-quality monitoring protocols that reliably raise an alarm when the packet threat model we consider in this pa- per, our protocols are efficient enough to run at line rate on high accuracy and system overhead. We also compare how our protocols per- form in the client-server setting

  16. Self-Assembly of Viral Capsids via a Hamiltonian Paths Approach: The Case of Bacteriophage MS2

    E-Print Network [OSTI]

    Severini, Simone

    Self-Assembly of Viral Capsids via a Hamiltonian Paths Approach: The Case of Bacteriophage MS2 of viruses the assembly of the viral capsids that encapsulate and hence provide protection for the viral genome can be modeled as tile assembly, where tiles represent are schematic representations of suitable

  17. Sensor Beams, Obstacles, and Possible Paths Benjamin Tovar 1 , Fred Cohen 2 , and Steven M. LaValle 1

    E-Print Network [OSTI]

    LaValle, Steven M.

    Sensor Beams, Obstacles, and Possible Paths Benjamin Tovar 1 , Fred Cohen 2 , and Steven M. La, or animal) travels among obstacles and binary detection beams. The task is to determine the possible agent settings, which may arise from physical sensor beams or virtual beams that are derived from other sensing

  18. Off-line compensation of the tool path deviations on robotic machining: Application to Incremental Sheet Forming

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Off-line compensation of the tool path deviations on robotic machining: Application to Incremental of industrial robots during an incremental sheet forming task. For that purpose, a robust and systematic method in a context of prototyping applications. Keywords: robot machining, elastic modeling, robot calibration

  19. AN ASPECT OF A DIDACTICAL PATH FOR APPROACHING THE CONCEPT OF FUNCTION: THE QUALITATIVE INTERPRETATION OF A GRAPH

    E-Print Network [OSTI]

    Spagnolo, Filippo

    156 AN ASPECT OF A DIDACTICAL PATH FOR APPROACHING THE CONCEPT OF FUNCTION: THE QUALITATIVE uncertainties and difficulties when teaching it (Even, 1993). At the middle school level, it seems didactically and their representations. From a didactical point of view, this sets the problem of how to lead the student to put

  20. A direct thin-film path towards low-cost large-area III-V photovoltaics

    E-Print Network [OSTI]

    California at Irvine, University of

    A direct thin-film path towards low-cost large-area III-V photovoltaics Rehan Kapadia1,2 *, Zhibin-V photovoltaics (PVs) have demonstrated the highest power conversion efficiencies for both single- and multi times, and large equipment investments restrict applications to concentrated and space photovoltaics

  1. 3560 IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 60, NO. 7, JULY 2012 Path Planning for Networked Robotic Surveillance

    E-Print Network [OSTI]

    Mostofi, Yasamin

    3560 IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 60, NO. 7, JULY 2012 Path Planning for Networked--In this paper, we consider a robotic surveillance problem where a fixed remote station deploys a team of mobile robots to spatially explore a given workspace, detect an unknown number of static targets, and inform

  2. An Experimental Comparison of Four Unit Test Criteria: Mutation, Edge-Pair, All-uses and Prime Path Coverage

    E-Print Network [OSTI]

    Offutt, Jeff

    Java. The findings are that mu- tation tests detected more faults and the other three crite- ria were very similarAn Experimental Comparison of Four Unit Test Criteria: Mutation, Edge-Pair, All-uses and Prime Path for quality, and the growth of agile processes and test driven development, de- velopers are expected to do

  3. Oxygen self-diffusion ``fast-paths'' in titanite single crystals and a general method for deconvolving self-diffusion

    E-Print Network [OSTI]

    Watson, E. Bruce

    Oxygen self-diffusion ``fast-paths'' in titanite single crystals and a general method most other minerals, titanite rarely if ever forms perfect crystals. In addition to the point defects could occur. During the course of an experimental study of oxygen lattice diffusion in titanite, we

  4. Direct-Drive Inerital Confinement Fusion Research at the Laboratory for Laser Energetics: Charting the Path to Thermonuclear Ignition

    SciTech Connect (OSTI)

    McCrory, R.L.; Regan, S.P.; Loucks, S.J.; Meyerhofer, D.D.; Skupsky, S.; Betti, R.; Boehly, T.R.; Craxton, R.S.; Collins, T.J.B.; Delettrez, J.A.; Edgell, D.; Epstein, R.; Fletcher, K.A.; Freeman, C.; Frenje, J.A.; Glebov, V.Yu.; Goncharov, V.N.; Harding, D.R.; Igumenshchev, I.V.; Keck, R.L.; Kilkenny, J.D.; Knauer, J.P.; Li, C.K.; Marciante, J.; Marozas, J.A.; Marshall, F.J.; Maximov, A.V.; McKenty, P.W.; Myatt, J.; Padalino, S.; Petrasso, R.D.; Radha, P.B.; Sangster, T.C.; Seguin, F.H.; Seka, W.; Smalyuk, V.A.; Soures, J.M.; Stoeckl, C.; Yaakobi, B.; Zuegel, J.D.

    2005-10-07T23:59:59.000Z

    Significant theoretical and experimental progress continues to be made at the University of Rocheter's Laboratory for Laser Energetics (LLE), charting the path to direct-drive inertial confinement fusion (ICF) ignition. Direct drive offers the potential for higher-gain implosions than x-ray drive and is a leading candidate for an inertial fusion enery power plant.

  5. Observations of short-circuiting flow paths within a free-surface wetland in Augusta, Georgia, U.S.A.

    E-Print Network [OSTI]

    Licciardi, Joseph M.

    constructed treatment wetland in Augusta, Georgia were used to quantify the size, distribution, velocity). In treatment wetlands, such heterogeneity nearly always results in reduced contaminant removal (WoObservations of short-circuiting flow paths within a free-surface wetland in Augusta, Georgia, U

  6. IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 33, NO. 1, JANUARY 2014 113 Path-Congestion-Aware Adaptive Routing with a

    E-Print Network [OSTI]

    Hung, Shih-Hao

    problems become major performance bottlenecks. An effective adaptive routing algorithm can help minimize and improve the effectiveness of routing path selection. We propose a path- congestion-aware adaptive routing University, Taipei, Taiwan (e-mail: enjui@access.ee.ntu.edu.tw; ck- craig@access.ee.ntu.edu.tw; andywu@cc.ee.ntu

  7. Quantum interference from sums over closed paths for electrons on a three-dimensional lattice in a magnetic field: Total energy, magnetic moment, and orbital susceptibility

    E-Print Network [OSTI]

    Nori, Franco

    it travels around a closed loop enclosing a net flux . Our lattice path integral calculation enables us paths in a cubic lattice, each one with its corresponding magnetic phase factor representing the net quantities: the magnetic moment M(B) and orbital susceptibility (B) at half filling, as well as the zero

  8. Enhancement of the Texas A&M University Autonomous Underwater Vehicle Controller through development of a middle level classical path planner

    E-Print Network [OSTI]

    Green, Jeremy Donald

    1998-01-01T23:59:59.000Z

    ) is the reactive path planning component of the AUVC which performs real-time obstacle detection, tracking and avoidance from raw sonar data. This module relies on a merit function based on the concept of potential fields for path planning. The problem of false...

  9. The National Ignition Facility: The Path to Ignition, High Energy Density Science and Inertial Fusion Energy

    SciTech Connect (OSTI)

    Moses, E

    2011-03-25T23:59:59.000Z

    The National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory (LLNL) in Livermore, CA, is a Nd:Glass laser facility capable of producing 1.8 MJ and 500 TW of ultraviolet light. This world's most energetic laser system is now operational with the goals of achieving thermonuclear burn in the laboratory and exploring the behavior of matter at extreme temperatures and energy densities. By concentrating the energy from its 192 extremely energetic laser beams into a mm{sup 3}-sized target, NIF can produce temperatures above 100 million K, densities of 1,000 g/cm{sup 3}, and pressures 100 billion times atmospheric pressure - conditions that have never been created in a laboratory and emulate those in the interiors of planetary and stellar environments. On September 29, 2010, NIF performed the first integrated ignition experiment which demonstrated the successful coordination of the laser, the cryogenic target system, the array of diagnostics and the infrastructure required for ignition. Many more experiments have been completed since. In light of this strong progress, the U.S. and the international communities are examining the implication of achieving ignition on NIF for inertial fusion energy (IFE). A laser-based IFE power plant will require a repetition rate of 10-20 Hz and a 10% electrical-optical efficiency laser, as well as further advances in large-scale target fabrication, target injection and tracking, and other supporting technologies. These capabilities could lead to a prototype IFE demonstration plant in 10- to 15-years. LLNL, in partnership with other institutions, is developing a Laser Inertial Fusion Energy (LIFE) baseline design and examining various technology choices for LIFE power plant This paper will describe the unprecedented experimental capabilities of the NIF, the results achieved so far on the path toward ignition, the start of fundamental science experiments and plans to transition NIF to an international user facility providing access to researchers around the world. The paper will conclude with a discussion of LIFE, its development path and potential to enable a carbon-free clean energy future.

  10. Final Scientific/Technical Report. A closed path methane and water vapor gas analyzer

    SciTech Connect (OSTI)

    Liukang, Xu; Dayle, McDermitt; Tyler, Anderson; Brad, Riensche; Anatoly, Komissarov; Julie, Howe

    2012-05-01T23:59:59.000Z

    Robust, economical, low-power and reliable closed-path methane (CH4), carbon dioxide (CO2), and water vapor (H2O) analyzers suitable for long-term measurements are not readily available commercially. Such analyzers are essential for quantifying the amount of CH4 and CO2 released from various ecosystems (wetlands, rice paddies, forests, etc.) and other surface contexts (e.g. landfills, animal husbandry lots, etc.), and for understanding the dynamics of the atmospheric CH4 and CO2 budget and their impact on climate change and global warming. The purpose of this project is to develop a closed-path methane, carbon dioxide gas and water vapor analyzer capable of long-term measurements in remote areas for global climate change and environmental research. The analyzer will be capable of being deployed over a wide range of ecosystems to understand methane and carbon dioxide exchange between the atmosphere and the surface. Measurements of methane and carbon dioxide exchange need to be made all year-round with limited maintenance requirements. During this Phase II effort, we successfully completed the design of the electronics, optical bench, trace gas detection method and mechanical infrastructure. We are using the technologies of two vertical cavity surface emitting lasers, a multiple-pass Herriott optical cell, wavelength modulation spectroscopy and direct absorption to measure methane, carbon dioxide, and water vapor. We also have designed the instrument application software, Field Programmable Gate Array (FPGA), along with partial completion of the embedded software. The optical bench has been tested in a lab setting with very good results. Major sources of optical noise have been identified and through design, the optical noise floor is approaching -60dB. Both laser modules can be temperature controlled to help maximize the stability of the analyzer. Additionally, a piezo electric transducer has been utilized to randomize the noise introduced from potential etalons. It is expected that all original specifications contained within the initial proposal will be met. We are currently in the beginning stages of assembling the first generation prototypes and finalizing the remaining design elements. The first prototypes will initially be tested in our environmental calibration chamber in which specific gas concentrations, temperature and humidity levels can be controlled. Once operation in this controlled setting is verified, the prototypes will be deployed at LI-COR√?¬Ę√?¬?√?¬?s Experimental Research Station (LERS). Deployment at the LERS site will test the instrument√?¬Ę√?¬?√?¬?s robustness in a real-world situation.

  11. Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production

    E-Print Network [OSTI]

    Narasayya, Vivek

    #12;Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production Toward Zero Carbon Energy Production Toward

  12. Geometric Algebra and Star Products on the Phase Space

    E-Print Network [OSTI]

    Peter Henselder

    2006-09-09T23:59:59.000Z

    Superanalysis can be deformed with a fermionic star product into a Clifford calculus that is equivalent to geometric algebra. With this multivector formalism it is then possible to formulate Riemannian geometry and an inhomogeneous generalization of exterior calculus. Moreover it is shown here how symplectic and Poisson geometry fit in this context. The application of this formalism together with the bosonic star product formalism of deformation quantization leads then on space and space-time to a natural appearance of spin structures and on phase space to BRST structures that were found in the path integral formulation of classical mechanics. Furthermore it will be shown that Poincare and Lie-Poisson reduction can be formulated in this formalism.

  13. Cycle Configurations for a PBMR Steam and Electricity Production Plant

    SciTech Connect (OSTI)

    Matzner, Dieter; Kriel, Willem; Correia, Michael; Greyvenstein, Renee [PBMR - Pty - Ltd, Lake Buena Vista Building, 1267 Gordon Hood Avenue, Centurion, PO Box 9396, Centurion 0046 (South Africa)

    2006-07-01T23:59:59.000Z

    The Pebble Bed Modular Reactor (PBMR) is an advanced helium-cooled, graphite moderated High Temperature Gas-cooled Reactor (HTGR) that is capable of multiple missions. The petrochemical industry requires the use of high temperature steam and electricity for their processes. Currently coal or natural gas is utilised for the generation of high temperature steam and electricity, which under-utilises natural resources and in the process emits CO{sub 2} into the atmosphere. This paper provides an overview of the PBMR product development path and discusses how steam production forms part of the future possibilities of the PBMR technology. Suitable cycle configurations for both process steam and electricity generation as required by petrochemical plants are discussed. (authors)

  14. PRODUCT REPRESENTATION IN LIGHTWEIGHT FORMATS FOR PRODUCT LIFECYCLE MANAGEMENT (PLM)

    E-Print Network [OSTI]

    Rzepa, Henry S.

    PRODUCT REPRESENTATION IN LIGHTWEIGHT FORMATS FOR PRODUCT LIFECYCLE MANAGEMENT (PLM) Lian Ding environments and the entire product lifecycle. There are new requirements for product representations, including: platform/application independence, support for the product lifecycle, rapidly sharing information

  15. The effect of. beta. -delayed fission on the production of r-process chronometers

    SciTech Connect (OSTI)

    Howard, W.M.; Meyer, B.S.

    1989-08-30T23:59:59.000Z

    The nuclear physics required for calculating the production ratios for the chronometric pairs {sup 235}U/{sup 232}Th and {sup 238}U/{sup 232}Th in the astrophysical r-process is considered in some detail. In particular, we calculate the nuclear structure of neutron-rich heavy elements to investigate the effects of beta-delayed fission and beta-delayed neutron emission during the beta decay from the r-process path to the actinide region. We find that previous estimates of the effects of beta-delayed fission on the production of these pairs has probably been overestimated. 11 refs., 1 fig.

  16. Beta-delayed fission and the production of very heavy nuclides from rapid neutron capture processes

    E-Print Network [OSTI]

    Wene, C O

    1976-01-01T23:59:59.000Z

    The experimental probabilities are larger than expected, indicating an increase in level densities above the fission barriers due to the loss of symmetry at the inner barrier. As a consequence beta delayed fission may occur also in the r-process path. When discussing the production of superheavy nuclides by the r-process, beta delayed fission has therefore to be considered not only in the decay back but also for the cut-off. The results from earlier calculations on the yield of stable nuclides from nuclear explosions and r-process production ratios for chronometric pairs are carried over into a new model with only small changes. (21 refs).

  17. The Case for Young People and Nature: A Path to a Healthy, Natural, Prosperous Future

    E-Print Network [OSTI]

    Hansen, James; Sato, Makiko; Epstein, Paul; Hearty, Paul J; Hoegh-Guldberg, Ove; Parmesan, Camille; Rahmstorf, Stefan; Rockstrom, Johan; Rohling, Eelco J; Sachs, Jeffrey; Smith, Peter; Steffen, Konrad; von Schuckmann, Karina; Zachos, James C

    2011-01-01T23:59:59.000Z

    We show that the widely accepted goal to keep human-made global warming less than 2{\\deg}C is not a 'safe' target, indeed, it would put Earth on a path with severe consequences for civilization and ecosystems that maintain human communities today. We describe scenarios that define how rapidly fossil fuel emissions must be phased down to restore Earth's energy balance and stabilize global climate. A scenario that returns atmospheric CO2 close to the 350 ppm level and stabilizes climate within this century is still technically possible, but it requires both rapid phase down of fossil fuel emissions and forestry and agricultural programs that enhance carbon storage in the biosphere and soils. A 20-year delay in initiating fossil fuel phasedown likely would cause the climate system to pass tipping points with disastrous consequences and keep CO2 above the 350 ppm level until at least 2250. Yet governments and the fossil fuel industry aim to exploit all fossil fuels before the world turns mainly to clean energies....

  18. A new approach to gravitational clustering: a path-integral formalism and large-N expansions

    E-Print Network [OSTI]

    P. Valageas

    2004-07-01T23:59:59.000Z

    We show that the formation of large-scale structures through gravitational instability in the expanding universe can be fully described through a path-integral formalism. We derive the action S[f] which gives the statistical weight associated with any phase-space distribution function f(x,p,t). This action S describes both the average over the Gaussian initial conditions and the Vlasov-Poisson dynamics. Next, applying a standard method borrowed from field theory we generalize our problem to an N-field system and we look for an expansion over powers of 1/N. We describe three such methods and we derive the corresponding equations of motion at the lowest non-trivial order for the case of gravitational clustering. This yields a set of non-linear equations for the mean $\\fb$ and the two-point correlation G of the phase-space distribution f, as well as for the response function R. These systematic schemes match the usual perturbative expansion on quasi-linear scales but should also be able to handle the non-linear regime. Our approach can also be extended to non-Gaussian initial conditions and may serve as a basis for other tools borrowed from field theory.

  19. Boosting QED and QCD bound states in the path integral formalism

    E-Print Network [OSTI]

    Yu. A. Simonov

    2014-10-27T23:59:59.000Z

    Wave functions and energy eigenvalues of the path integral Hamiltonian are studied in Lorentz frame moving with velocity $v$. The instantaneous interaction produced by the Wilson loop is shown to be reduced by an overall factor $\\sqrt{1-(\\frac{v}{c})^2}$. As a result one obtains the boosted energy eigenvalues in the Lorentz covariant form $E= \\sqrt{\\veP^2+M^2_0}$, where $M_0$ is the c.m. energy, and this form is tested for two free particles and for the Coulomb and linear interaction.Using Lorentz contracted wave functions of the bound states one obtains the scaled parton wave functions and valence quark distributions for large $P$. Matrix elements containing wave functions moving with different velocities strongly decrease with growing relative momentum, e.g. for the time-like formfactors one obtains $F_h(Q_0)\\sim (\\frac{M_h}{Q_0})^{2 n_h} $ with $n_h = 1$ and 2 for mesons and baryons, as in the "quark counting rule".

  20. Z, ZX, and X-1: A Realistic Path to High Fusion Yield

    SciTech Connect (OSTI)

    COOK, DONALD L.

    1999-10-07T23:59:59.000Z

    Z-pinches now constitute the most energetic and powerful sources of x-rays available by a large margin. The Z accelerator at Sandia National Laboratories has produced 1.8 MJ of x-ray energy, 280 TW of power, and hohlraum temperatures of 200 eV. These advances are being applied to inertial confinement fusion (ICF) experiments on Z. The requirements for high fusion yield are exemplified in the target to be driven by the X-1 accelerator. X-1 will drive two z-pinches, each producing 7 MJ of x-ray energy and about 1000 TW of x-ray power. Together, these radiation sources will heat a hohlraum containing the 4-mm diameter ICF capsule to a temperature exceeding 225 eV for about 10 ns, with the pulse shape required to drive the capsule to high fusion yield, in the range of 200--1000 MJ. Since X-1 consists of two identical accelerators, it is possible to mitigate the technical risk of high yield by constructing one accelerator. This accelerator, ZX, will bridge the gap from Z to X-1 by driving an integrated target experiment with a very efficient energy source, ZX will also provide experimental condition that the full specifications of the X-1 accelerator for high yield are achievable, and that a realistic path to high fission yield exists.