Sample records for royalty regime newfoundland

  1. Offshore Natural Gas Royalty Regime (Newfoundland and Labrador, Canada)

    Broader source: Energy.gov [DOE]

    The province’s offshore contains large natural gas deposits. The Provincial Government has developed an Offshore Natural Gas Royalty Regime that will ensure these resources are developed in the...

  2. Patent Holdup and Royalty Stacking* Mark A. Lemley**

    E-Print Network [OSTI]

    Sadoulet, Elisabeth

    Reply Patent Holdup and Royalty Stacking* Mark A. Lemley** & Carl Shapiro*** We argued in our article, Patent Holdup and Royalty Stacking,1 that the threat to obtain a permanent injunction can greatly enhance a patent holder's negotiating power, leading to royalty rates that exceed a benchmark level based

  3. Land and Water Developments (Newfoundland and Labrador)

    Broader source: Energy.gov [DOE]

    This policy applies to public water supply areas designated by the province of Newfoundland and Labrador. The policy limits development in public water supply areas unless they meet specific...

  4. Memorial University of Newfoundland Indirect Costs Report

    E-Print Network [OSTI]

    deYoung, Brad

    Memorial University of Newfoundland Indirect Costs Report 2012-13 The grant provided through the Government of Canada Indirect Costs Program (ICP) is essential to Memorial's research success. Funding and impact can be found in the following section. Total 2013 Indirect Costs Grant: $4,318,814 Management

  5. Petroleum Exploration Enhancement Program (Newfoundland and Labrador, Canada)

    Broader source: Energy.gov [DOE]

    The Provincial Energy Plan, released in September 2007, introduced a policy action to encourage and promote exploration activity in Western Newfoundland known as the Petroleum Exploration...

  6. Qualifying RPS Market States (Newfoundland and Labrador, Canada)

    Broader source: Energy.gov [DOE]

    This entry lists the states with RPS policies that accept generation located in Newfoundland and Labrador, Canada as eligible sources towards their Renewable Portfolio Standard targets or goals. ...

  7. SQUASH NEWFOUNDLAND INDIVIDUAL MEMBERSHIP APPLICATION 2003-2004

    E-Print Network [OSTI]

    : _________________________________ Postal Code: ________________ Tel: Home: ___________________ Bus: ________________ Cell and discharge SQUASH NEWFOUNDLAND, its sponsors, organizers and hosts (or any of their officials): ___________________ Telephone: ___________________ FOR OFFICIAL USE ONLY Date Received: ____________________ Payment

  8. "Help Wanted": Demographics, Labour Supply and Economic Change in Newfoundland and

    E-Print Network [OSTI]

    deYoung, Brad

    "Help Wanted": Demographics, Labour Supply and Economic Change in Newfoundland and Labrador Keith": Demographics, Labour Supply and Economic Change in Newfoundland and Labrador Leslie Harris Centre of Regional": Demographics, Labour Supply and Economic Change in Newfoundland and Labrador Over the medium to long term

  9. A NEWFOUNDLAND AND LABRADOR ENGLISH BIBLIOGRAPHY September 2010

    E-Print Network [OSTI]

    Oyet, Alwell

    and Labrador English (NLE). A resource for some recent as yet unpublished conference papers is ://musl.ling.mun.ca >, the website of the Memorial University Sociolinguistics Laboratory (MUSL). Further resources on NLE can be obtained by searching the Newfoundland Periodical Article Bibliography (PAB) compiled by Memorial

  10. Injunctions, Hold-Up, and Patent Royalties Carl Shapiro, University of California at Berkeley

    E-Print Network [OSTI]

    Sadoulet, Elisabeth

    Injunctions, Hold-Up, and Patent Royalties Carl Shapiro, University of California at Berkeley Send royalty negotiations between a patent holder and a downstream firm whose product is more valuable if it includes a feature cov- ered by the patent. The downstream firm must make specific investments to de- velop

  11. LABORATORY ROYALTY USE PROGRAM ANNUAL REPORT TO THE DEPARTMENT OF ENERGY

    SciTech Connect (OSTI)

    OGEKA,G.J.; FOX,K.J.

    1999-12-31T23:59:59.000Z

    Brookhaven National Laboratory was established in 1947 on the site of the former Army Camp Upton. Brookhaven is a multidisciplinary Laboratory that carries out basic and applied research in the physical, biomedical and environmental sciences, and in selected energy technologies. Associated Universities, Inc. managed the Laboratory, under contract with the US Department of Energy until April 30, 1998. On March 1, 1998, Brookhaven Science Associates LLC (BSA) was awarded a contract by the US Department of Energy to manage the Laboratory. Brookhaven Science Associates has taken responsibility for all aspects of the existing Royalty Use Program from the prior contractor, AUI. This report is limited to FY 1998 activities of the Royalty Use Program that were funded by royalty income from prior fiscal years. Any FY 1998 royalty income allocated in FY 1998 shall be reported in the FY 1999 Royalty Use Program Report.

  12. Tax advantages of a deferred minimum annual royalty provision in oil and gas leases

    SciTech Connect (OSTI)

    Martin, R.B. Jr.

    1981-12-01T23:59:59.000Z

    This article describes how a deferred minimum annual royalty provision can serve to meet conflicting economic demands without adverse tax consequences. A deferred minimum annual royalty provision is an economic hybrid of a production royalty and a lease bonus. To a lessor, it has the advantage of guaranteeing a minimum return without regard to production. It should also encourage prompt development of the lease since a lessee will desire to void incurring subsequent minimum annual royalties on unproductive acreage. To an accrual-basis lessee, it has greater tax advantages than a lease bonus because it is deductible in the year paid or incurred. Although it exposes the lessee to more economic risk, this risk can be reduced through proper planning. In appropriate circumstances, a deferred minimum annual-royalty provision may therefore be worthy of consideration by either or both parties in an oil- and gas-leasing transaction. 44 references.

  13. ECONOMIC DEVELOPMENT BENEFITS OF THE OIL AND GAS INDUSTRY IN NEWFOUNDLAND AND LABRADOR

    E-Print Network [OSTI]

    deYoung, Brad

    ECONOMIC DEVELOPMENT BENEFITS OF THE OIL AND GAS INDUSTRY IN NEWFOUNDLAND AND LABRADOR Conference Report - September 2007 & The Oil And Gas Development Partnership #12;ECONOMIC DEVELOPMENT BENEFITS OF THE OIL AND GAS INDUSTRY IN NEWFOUNDLAND AND LABRADOR May 16, 2007 St. John's Conference Report September

  14. The extent of chronic marine oil pollution in southeastern Newfoundland waters assessed through beached

    E-Print Network [OSTI]

    Jones, Ian L.

    on their feathers is heavy fuel oil mixed with lubricants, the mixture found in bilges of large vessels. BeachedThe extent of chronic marine oil pollution in southeastern Newfoundland waters assessed through America. Oiled seabirds have washed up on beaches in Newfoundland for many decades. Most oil

  15. XII.A.3. Binghamton University Royalty Distribution Plan The State University of New York patent policy provides for sharing between the

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    XII.A.3. Binghamton University Royalty Distribution Plan The State University of New York patent licensing of inventions. The patent policy requires 40% of the gross royalty must be provided with their generation as an incentive to disclosing potentially patentable inventions. Royalty funds provided

  16. Impact of geothermal technology improvements on royalty collections on federal lands: Volume II: Appendices

    SciTech Connect (OSTI)

    Not Available

    1988-10-01T23:59:59.000Z

    This volume contains the appendices for the ''Impact of Geothermal Technology Improvements on Royalty Collections on Federal Lands, Final Report, Volume I.'' The material in this volume supports the conclusions presented in Volume I and details each Known Geothermal Resource Area's (KGRA's) royalty estimation. Appendix A details the physical characteristics of each KGRA considered in Volume I. Appendix B supplies summary narratives on each state which has a KGRA. The information presented in Appendix C shows the geothermal power plant area proxies chosen for each KGRA considered within the report. It also provides data ranges which fit into the IMGEO model for electric energy cost estimates. Appendix D provides detailed cost information from the IMGEO model if no Geothermal Program RandD goals were completed beyond 1987 and if all the RandD goals were completed by the year 2000. This appendix gives an overall electric cost and major system costs, which add up to the overall electric cost. Appendix E supplies information for avoided cost projections for each state involved in the study that were used in the IMGEO model run to determine at what cost/kWh a 50 MWe plant could come on line. Appendix F supplies the code used in the determination of royalty income, as well as, tabled results of the royalty runs (detailed in Appendix G). The tabled results show royalty incomes, assuming a 10% discount rate, with and without RandD and with and without a $0.01/kWh transmission cost. Individual data sheets for each KGRA royalty income run are presented in Appendix G.

  17. POET: The Online Preference Elicitation Tool James Royalty, Robert Holland, Judy Goldsmith, Alex Dekhtyar

    E-Print Network [OSTI]

    Dekhtyar, Alexander

    POET: The Online Preference Elicitation Tool #3; James Royalty, Robert Holland, Judy Goldsmith. To this end, we present POET: the Online Preference Elicitation Tool. POET is a graphical Java applet designed is complete POET out- puts the resulting utility function as an XML docu- ment. Internally, POET represents

  18. MEMORIAL UNIVERSITY OF NEWFOUNDLAND Three-year Term Appointment in Process (Oil and Gas) Engineering

    E-Print Network [OSTI]

    George, Glyn

    MEMORIAL UNIVERSITY OF NEWFOUNDLAND Three-year Term Appointment in Process (Oil and Gas with oil and gas specialization at the assistant- or associate professor-level, commencing April 12, 2010 in the area of oil and gas, and process engineering, to supervise graduate students, to participate in other

  19. MUN WATER PLEDGE In signing this pledge, the Memorial University of Newfoundland community pledges to

    E-Print Network [OSTI]

    Oyet, Alwell

    MUN WATER PLEDGE In signing this pledge, the Memorial University of Newfoundland community pledges to: 1. Progressively and systematically eliminate the distribution of plastic bottled water at all of a university community that is bottled water free. 2. Conduct a University-wide Public Water Access Audit

  20. Clinical Psychologist The Department of Psychology at Memorial University of Newfoundland invites applications for

    E-Print Network [OSTI]

    deYoung, Brad

    Clinical Psychologist The Department of Psychology at Memorial University of Newfoundland invites applications for a tenure track position in Clinical Psychology at the rank of Assistant Professor (VPA-PSYC- 2012-001). The successful candidate (1) will have a doctorate from a CPA or APA accredited clinical

  1. Regimes Of Helium Burning

    E-Print Network [OSTI]

    F. X. Timmes; J. C. Niemeyer

    2000-05-16T23:59:59.000Z

    The burning regimes encountered by laminar deflagrations and ZND detonations propagating through helium-rich compositions in the presence of buoyancy-driven turbulence are analyzed. Particular attention is given to models of X-ray bursts which start with a thermonuclear runaway on the surface of a neutron star, and the thin shell helium instability of intermediate-mass stars. In the X-ray burst case, turbulent deflagrations propagating in the lateral or radial directions encounter a transition from the distributed regime to the flamlet regime at a density of 10^8 g cm^{-3}. In the radial direction, the purely laminar deflagration width is larger than the pressure scale height for densities smaller than 10^6 g cm^{-3}. Self-sustained laminar deflagrations travelling in the radial direction cannot exist below this density. Similarily, the planar ZND detonation width becomes larger than the pressure scale height at 10^7 g cm^{-3}, suggesting that a steady-state, self-sustained detonations cannot come into existance in the radial direction. In the thin helium shell case, turbulent deflagrations travelling in the lateral or radial directions encounter the distributed regime at densities below 10^7 g cm^{-3}, and the flamelet regime at larger densities. In the radial direction, the purely laminar deflagration width is larger than the pressure scale height for densities smaller than 10^4 g cm^{-3}, indicating that steady-state laminar deflagrations cannot form below this density. The planar ZND detonation width becomes larger than the pressure scale height at 5 10^4 g cm^{-3}, suggesting that steady-state, self-sustained detonations cannot come into existance in the radial direction.

  2. Weather Regime Prediction Using Statistical Learning

    E-Print Network [OSTI]

    A. Deloncle; R. Berk; F. D'Andrea; M. Ghil

    2011-01-01T23:59:59.000Z

    and B. Legras, 1995: Weather regimes: Recurrence and quasi10952. Molteni, F. , 2002: Weather regimes and multipleK. Ide, and M. Ghil, 2004: Weather regimes and preferred

  3. Gender and snow crab occupational asthma in Newfoundland and Labrador, Canada

    SciTech Connect (OSTI)

    Howse, Dana [SafetyNet, Newfoundland and Labrador Centre for Applied Health Research, Faculty of Medicine, Memorial University, St. John's, Nfld., Canada A1B 3V6 (Canada); Gautrin, Denyse [Hopital du Sacre-Coeur de Montreal, Montreal, Que., H4J 1C5 (Canada); Neis, Barbara [SafetyNet, Newfoundland and Labrador Centre for Applied Health Research, Faculty of Medicine, Memorial University, St. John's, Nfld., A1B 3V6 (Canada)]. E-mail: bneis@mun.ca; Cartier, Andre [Hopital du Sacre-Coeur de Montreal, Montreal, Que., H4J 1C5 (Canada); Horth-Susin, Lise [Valley Regional Hospital, Kentville, NS, B4N 5E3 (Canada); Jong, Michael [Faculty of Medicine, Memorial University and Health Labrador Corporation, Happy Valley, NL, AOP 1EO (Canada); Swanson, Mark C. [Mayo Clinic and Foundation, Rochester, MN 55905 (United States)

    2006-06-15T23:59:59.000Z

    Fish and shellfish processing employs many thousands of people globally, with shellfish processing becoming more important in recent years. Shellfish processing is associated with multiple occupational health and safety (OHS) risks. Snow crab occupational asthma (OA) is work-related asthma associated with processing snow crab. We present a gender analysis of findings from a 3-year multifaceted study of snow crab OA in Newfoundland and Labrador, Canada. The study was carried out in four snow crab processing communities between 2001 and 2004. An anonymous survey questionnaire on knowledge, beliefs, and concerns related to processing snow crab administered to 158 workers attending community meetings at the start of the research found that women were significantly more likely than men to associate certain health problems, especially chest tightness, difficulty breathing, and cough, with crab processing (P<0.001). Worker health assessments carried out with 215 processing workers (187 current/28 former; 120 female/95 male) found that female participants were more likely to be diagnosed as almost certain/highly probable snow crab OA and allergy (P=0.001) and to be sensitized to snow crab (P=0.01) than male participants. Work histories from the health assessments were used to classify processing jobs as male or female. Allergen sampling (211 allergen samples: 115 area, 96 personal breathing zone) indicated that the plant areas where these male jobs were concentrated were associated with lower levels of aerosolized crab allergens (the agents responsible for OA to snow crab) than areas associated with female jobs. This difference was statistically significant in the two plants with poor ventilation (p<0.001 and P=0.017 for these plants). A gender analysis of work history data showed that female health assessment participants were likely to have worked longer processing snow crab than males (5 years versus 3.5 years, respectively). Cross-referencing of work history results with allergen sampling data for male and female job areas showed a gender difference in median cumulative exposures (duration of exposurexlevel of exposures) for health assessment participants. Health assessment participants with estimated higher median cumulative exposures were more likely to receive a diagnosis of almost certain/highly probable OA and allergy. Semistructured interviews with 27 health assessment participants (24 female/ 3 male) with a diagnosis of almost certain/highly probable or possible snow crab OA indicated that these workers can experience substantial quality of life impacts while working and that they seek to reduce the economic impact of their illness by remaining at their jobs as long as possible. Indications of selection bias and other study limitations point to the need for more research exploring the relationship between the gender division of labor and knowledge, beliefs, and concerns about snow crab processing, as well as gender differences in prevalence, quality of life, and socioeconomic impact.

  4. Is the Ozone Depletion Regime a Model for an Emerging Regime on Global Warming?

    E-Print Network [OSTI]

    Lang, Winfried

    1991-01-01T23:59:59.000Z

    the for- mation of a global warming regime produces a highlydepletion and the global warming regimes was recognized byan Emerging Regime on Global Warming? by Winfried Lang I.

  5. Microgravity Flow Regime Transition Modeling

    E-Print Network [OSTI]

    Shephard, Adam M.

    2010-07-14T23:59:59.000Z

    by Ghrist (2008) where an existing computer code, RELAP 5-3D, demonstrated the limitations of currently available computational modeling when applied to zero-g conditions. 1.2.2 EXPERIMENTAL APPARATUS All flow regime mapping experiments consist of a... ............................................................... 9 2.3 Dukler et al. 1988/Janicot 1988 ............................................. 9 2.4 Colin et al. 1991 .................................................................... 11 2.5 Huckerby and Rezkallah 1992...

  6. Kinetic Equations, Moment Closures, and Fluid Regimes

    E-Print Network [OSTI]

    Maryland at College Park, University of

    -free-path is on the scale of the problem spatial domain. Semiconductor fabrication and design and areospace are sources of such problems. #12;Transition Regime Models Transition regime models must be designed to bridge the gap between

  7. The three different regimes in coulombic friction

    E-Print Network [OSTI]

    Azzouz Dermoune; Daoud Ounaissi; Nadji Rahmania

    2015-04-24T23:59:59.000Z

    de Gennes identified three regimes in the phenomenon of the Langevin equation wich includes Coulombic friction. Here we extend and precise this phenomenon to a constant external force.

  8. Three regimes of relativistic beam - plasma interaction

    SciTech Connect (OSTI)

    Muggli, P.; Allen, B.; Fang, Y.; Yakimenko, V.; Babzien, M.; Kusche, K.; Fedurin, M.; Vieira, J.; Martins, J.; Silva, L. [Max Planck Institute for Physics, 80805 Munich (Germany) and University of Southern California, Los Angeles, CA 90089 (United States); University of Southern California, Los Angeles, CA 90089 (United States); Brookhaven National Laboratory, Upton, NY 11973 (United States); GoLP/Instituto de Plasmas e Fusao Nuclear - Laboratorio Associado Instituto Superior Tecnico (IST), Technical University of Lisbon, Lisboa (Portugal)

    2012-12-21T23:59:59.000Z

    Three regimes of relativistic beam - plasma interaction can in principle be reached at the ATF depending on the relative transverse and longitudinal size of the electron bunch when compared to the cold plasma collisionless skin depth c?{omega}{sub pe}: the plasma wakefield accelerator (PWFA), the self-modulation instability (SMI), and the current filamentation instability (CFI) regime. In addition, by choosing the bunch density, the linear, quasi-nonlinear and non linear regime of the PWFA can be reached. In the case of the two instabilities, the bunch density determines the growth rate and therefore the occurrence or not of the instability. We briefly describe these three regimes and outline results demonstrating that all these regime have or will be reached experimentally. We also outline planned and possible follow-on experiments.

  9. End of the Concessionary Regime in Mexico

    E-Print Network [OSTI]

    Pulido, Mario

    2015-01-01T23:59:59.000Z

    expropriated. Instead, Mexico saw prosperity from cateringEnd of the Concessionary Regime in Mexico By Mario Pulido OnMarch 18, 1938, President of Mexico Lazaro Cardenas formally

  10. Exploring Advanced Combustion Regimes for Efficiency and Emissions...

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

    Exploring Advanced Combustion Regimes for Efficiency and Emissions Exploring Advanced Combustion Regimes for Efficiency and Emissions 2003 DEER Conference Presentation: Oak Ridge...

  11. Laser-Nucleus Interactions: The Quasiadiabatic Regime

    E-Print Network [OSTI]

    Pálffy, Adriana; Hoefer, Axel; Weidenmüller, Hans A

    2015-01-01T23:59:59.000Z

    The interaction between nuclei and a strong zeptosecond laser pulse with coherent MeV photons is investigated theoretically. We provide a first semi-quantitative study of the quasiadiabatic regime where the photon absorption rate is comparable to the nuclear equilibration rate. In that regime, multiple photon absorption leads to the formation of a compound nucleus in the so-far unexplored regime of excitation energies several hundred MeV above the yrast line. The temporal dynamics of the process is investigated by means of a set of master equations that account for dipole absorption, stimulated dipole emission, neutron decay and induced fission in a chain of nuclei. That set is solved numerically by means of state-of-the-art matrix exponential methods also used in nuclear fuel burnup and radioactivity transport calculations. Our quantitative estimates predict the excitation path and range of nuclei reached by neutron decay and provide relevant information for the layout of future experiments.

  12. Laser-Nucleus Interactions: The Quasiadiabatic Regime

    E-Print Network [OSTI]

    Adriana Pálffy; Oliver Buss; Axel Hoefer; Hans A. Weidenmüller

    2015-06-12T23:59:59.000Z

    The interaction between nuclei and a strong zeptosecond laser pulse with coherent MeV photons is investigated theoretically. We provide a first semi-quantitative study of the quasiadiabatic regime where the photon absorption rate is comparable to the nuclear equilibration rate. In that regime, multiple photon absorption leads to the formation of a compound nucleus in the so-far unexplored regime of excitation energies several hundred MeV above the yrast line. The temporal dynamics of the process is investigated by means of a set of master equations that account for dipole absorption, stimulated dipole emission, neutron decay and induced fission in a chain of nuclei. That set is solved numerically by means of state-of-the-art matrix exponential methods also used in nuclear fuel burnup and radioactivity transport calculations. Our quantitative estimates predict the excitation path and range of nuclei reached by neutron decay and provide relevant information for the layout of future experiments.

  13. Massive superstring scatterings in the Regge regime

    SciTech Connect (OSTI)

    He Song; Lee, Jen-Chi; Takahashi, Keijiro; Yang Yi [Institute of High Energy Physics, Chinese Academic of Sciences, Beijing (China); Department of Electrophysics, National Chiao-Tung University and Physics Division, National Center for Theoretical Sciences, Hsinchu, Taiwan (China); Department of Electrophysics, National Chiao-Tung University, Hsinchu, Taiwan (China); Department of Electrophysics, National Chiao-Tung University and Physics Division, National Center for Theoretical Sciences, Hsinchu, Taiwan (China)

    2011-03-15T23:59:59.000Z

    We calculate four classes of high-energy massive string scattering amplitudes of fermionic string theory at arbitrary mass levels in the Regge regime (RR). We show that all four leading order amplitudes in the RR can be expressed in terms of the Kummer function of the second kind. Based on the summation algorithm of a set of extended signed Stirling number identities, we show that all four ratios calculated previously by the method of decoupling of zero-norm states among scattering amplitudes in the Gross regime can be extracted from this Kummer function in the RR. Finally, we conjecture and give evidence that the existence of these four Gross regime ratios in the RR persists to subleading orders in the Regge expansion of all high-energy fermionic string scattering amplitudes.

  14. Thermal emission in the ultrastrong coupling regime

    E-Print Network [OSTI]

    A. Ridolfo; M. Leib; S. Savasta; M. J. Hartmann

    2012-10-08T23:59:59.000Z

    We study thermal emission of a cavity quantum electrodynamic system in the ultrastrong-coupling regime where the atom-cavity coupling rate becomes comparable the cavity resonance frequency. In this regime, the standard descriptions of photodetection and dissipation fail. Following an approach that was recently put forward by Ridolfo et al.[arXiv:1206.0944], we are able to calculate the emission of systems with arbitrary strength of light matter interaction, by expressing the electric field operator in the cavity-emitter dressed basis. Here we present thermal photoluminescence spectra, calculated for given temperatures and for different couplings in particular for available circuit QED parameters.

  15. Confined water in the low hydration regime

    E-Print Network [OSTI]

    P. Gallo; M. Rapinesi; M. Rovere

    2002-04-05T23:59:59.000Z

    Molecular dynamics results on water confined in a silica pore in the low hydration regime are presented. Strong layering effects are found due to the hydrophilic character of the substrate. The local properties of water are studied as function of both temperature and hydration level. The interaction of the thin films of water with the silica atoms induces a strong distortion of the hydrogen bond network. The residence time of the water molecules is dependent on the distance from the surface. Its behavior shows a transition from a brownian to a non-brownian regime approaching the substrate in agreement with results found in studies of water at contact with globular proteins.

  16. Statistical regimes of random laser fluctuations

    SciTech Connect (OSTI)

    Lepri, Stefano [Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, via Madonna del Piano 10, I-50019 Sesto Fiorentino (Italy); Cavalieri, Stefano [Dipartimento di Fisica, Universita di Firenze, via G. Sansone 1, I-50019 Sesto Fiorentino (Italy); European Laboratory for Non-linear Spectroscopy, via N. Carrara 1, I-50019 Sesto Fiorentino (Italy); Oppo, Gian-Luca [SUPA and Department of Physics, University of Strathclyde, 107 Rottenrow, Glasgow, G4 0NG, Scotland (United Kingdom); Wiersma, Diederik S. [European Laboratory for Non-linear Spectroscopy, via N. Carrara 1, I-50019 Sesto Fiorentino (Italy); BEC-INFM Center, I-38050 Povo, Trento (Italy)

    2007-06-15T23:59:59.000Z

    Statistical fluctuations of the light emitted from amplifying random media are studied theoretically and numerically. The characteristic scales of the diffusive motion of light lead to Gaussian or power-law (Levy) distributed fluctuations depending on external control parameters. In the Levy regime, the output pulse is highly irregular leading to huge deviations from a mean-field description. Monte Carlo simulations of a simplified model which includes the population of the medium demonstrate the two statistical regimes and provide a comparison with dynamical rate equations. Different statistics of the fluctuations helps to explain recent experimental observations reported in the literature.

  17. Modification ofregional groundwater regimes by land reclamation

    E-Print Network [OSTI]

    Jiao, Jiu Jimmy

    Modification ofregional groundwater regimes by land reclamation Jiu Jimmy Jiao Department ofEarth Sciences, The University ofHong Kong, P. R. China Abstract JJ.Jiao Land reclamation has played;Bouchardetal., 1998;Schofield etal., 1992). While reclamation provides valuable land, it also creates various

  18. Fire Regimes and Fuel Treatments Project title

    E-Print Network [OSTI]

    Management course in April 2001. The fire management professionals completed a survey that allowed us results from this meta-analysis were presented at the June 2001 Musgrove Seminar. We are planning dissemination of ours and other recent research related to fuel treatments and fire regimes. We are planning

  19. Predicting Weather Regime Transitions in Northern Hemisphere Datasets

    E-Print Network [OSTI]

    Kondrashov, D.; Shen, J.; Berk, R.; D., F

    2006-01-01T23:59:59.000Z

    R, D’Andrea F, Ghil M (2007) Weather regime prediction usingA case study. Mon. Weather Rev. , 120, 1616–1627. Kimoto M,D, Ide K, Ghil M (2004) Weather regimes and preferred

  20. Predicting Weather Regime Transitions in Northern Hemisphere Datasets

    E-Print Network [OSTI]

    D. Kondrashov; J. Shen; R. Berk; F. D

    2011-01-01T23:59:59.000Z

    R, D’Andrea F, Ghil M (2007) Weather regime prediction usingA case study. Mon. Weather Rev. , 120, 1616–1627. Kimoto M,D, Ide K, Ghil M (2004) Weather regimes and preferred

  1. Predicting Weather Regime Transitions in Northern Hemisphere Datasets

    E-Print Network [OSTI]

    Kondrashov, Dmitri; Shen, Jie; Berk, Richard; D'Andrea, F.; Ghil, M.

    2006-01-01T23:59:59.000Z

    R, D'Andrea F, Ghil M (2007) Weather regime prediction usingA case study. Mon. Weather Rev. , 120, 1616-1627. Kimoto M ,D, Ide K , Ghil M (2004) Weather regimes and preferred

  2. Shifting Interest Regimes of the Working Classes in Latin America

    E-Print Network [OSTI]

    Berins Collier, Ruth; Handlin, Samuel P.

    2005-01-01T23:59:59.000Z

    Handlin IIR Working Paper Shifting Interest Regimes of the2000), “Working-Class Power, Capitalist-Class Interest, andShifting Interest Regimes of the Working Classes in Latin

  3. Physical regimes for feedback in galaxy formation

    E-Print Network [OSTI]

    P. Monaco

    2004-04-13T23:59:59.000Z

    We present a new (semi-)analytic model for feedback in galaxy formation. The ISM is modeled as a two-phase medium in pressure equilibrium. The remnants of exploding type II SNe percolate into super-bubbles (SBs) that sweep the ISM, heating the hot phase (if the SB is adiabatic) or cooling it (in the snowplow stage, when the interior gas of the SB has cooled). The resulting feedback regimes occur in well-defined regions of the space defined by vertical scale-length and surface density of the structure. When SBs blow out in the adiabatic regime, the efficiency of SNe in heating the ISM is ~5 per cent, with \\~80 per cent of the energy budget injected into the external halo, and the outcoming ISM is self-regulated to a state similar to that found in the Milky Way. Feedback is most efficient when SBs are pressure-confined in the adiabatic regime. In some significant regions of the parameter space confinement takes place in the snowplow stage; then the hot phase has a lower temperature and star formation is quicker. In some critical cases, the hot phase is strongly depleted and the cold phase percolates the whole volume, giving rise to a sudden burst of star formation. Strong galactic winds are predicted to happen only in critical cases. This model provides a starting point for constructing a realistic grid of feedback solutions to be used in galaxy formation codes. The predictive power of this model extends to many properties of the ISM, so that most parameters can be constrained by reproducing the main properties of the Milky Way. (Abridged)

  4. Imperfect relativistic mirrors in the quantum regime

    SciTech Connect (OSTI)

    Mendonça, J. T., E-mail: titomend@ist.utl.pt [IPFN, Instituto Superior Técnico, 1049-001 Lisboa (Portugal); Serbeto, A., E-mail: serbeto@if.uff.br [Instituto de Física, Universidade Federal Fluminense, 24210-340 RJ (Brazil); Galvão, R. M. O., E-mail: rgalvao@if.usp.br [Instituto de Física, Universidade de São Paulo, 05508-090 SP (Brazil)

    2014-05-15T23:59:59.000Z

    The collective backscattering of intense laser radiation by energetic electron beams is considered in the relativistic quantum regime. Exact solutions for the radiation field are obtained, for arbitrary electron pulse shapes and laser intensities. The electron beams act as imperfect nonlinear mirrors on the incident laser radiation. This collective backscattering process can lead to the development of new sources of ultra-short pulse radiation in the gamma-ray domain. Numerical examples show that, for plausible experimental conditions, intense pulses of gamma-rays, due to the double Doppler shift of the harmonics of the incident laser radiation, can be produced using the available technology, with durations less than 1 as.

  5. Stable operating regime for traveling wave devices

    DOE Patents [OSTI]

    Carlsten, Bruce E. (Los Alamos, NM)

    2000-01-01T23:59:59.000Z

    Autophase stability is provided for a traveling wave device (TWD) electron beam for amplifying an RF electromagnetic wave in walls defining a waveguide for said electromagnetic wave. An off-axis electron beam is generated at a selected energy and has an energy noise inherently arising from electron gun. The off-axis electron beam is introduced into the waveguide. The off-axis electron beam is introduced into the waveguide at a second radius. The waveguide structure is designed to obtain a selected detuning of the electron beam. The off-axis electron beam has a velocity and the second radius to place the electron beam at a selected distance from the walls defining the waveguide, wherein changes in a density of the electron beam due to the RF electromagnetic wave are independent of the energy of the electron beam to provide a concomitant stable operating regime relative to the energy noise.

  6. Assessing the Institution of the Nuclear Nonproliferation Regime

    SciTech Connect (OSTI)

    Toomey, Christopher

    2010-05-14T23:59:59.000Z

    The nuclear nonproliferation regime is facing a crisis of effectiveness. During the Cold War, the regime was relatively effective in stemming the proliferation of nuclear weapons and building an institutional structure that could, under certain conditions, ensure continued success. However, in the evolving global context, the traditional approaches are becoming less appropriate. Globalization has introduced new sets of stresses on the nonproliferation regime, such as the rise of non-state actors, broadening extensity and intensity of supply chains, and the multipolarization of power. This evolving global context demands an analytical and political flexibility in order to meet future threats. Current institutional capabilities established during the Cold War are now insufficient to meet the nonproliferation regime’s current and future needs. The research was based on information gathered through interviews and reviews of the relevant literature, and two dominant themes emerged. First, that human security should be integrated into the regime to account for the rise of non-state actors and networked violence. Second, confidence in the regime’s overall effectiveness has eroded at a time where verification-based confidence is becoming more essential. The research postulates that a critical analysis of the regime that fully utilizes institutional theory, with its focus on rules, normative structures, and procedures will be essential to adapting the regime to the current global context, building mechanisms for generating trust, creating better enforcement, and providing flexibility for the future.

  7. Singapore's Economic Balancing Act: How a Company's Collapse Challenged the Country's New Corporate Governance Regime

    E-Print Network [OSTI]

    Roseme, Sam

    2007-01-01T23:59:59.000Z

    THE COUNTRY'S NEW CORPORATE GOVERNANCE REGIME Sam RosemeON SINGAPORE'S CORPORATE GOVERNANCE REGIME . A.CORPORATE GOVERNANCE .. B. CHINA'S

  8. aridic regimes: Topics by E-print Network

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

    Philip: This project assesses the effects of 20th Century fire exclusion on fire frequency and fuel hazard, as well 69 Classifying Exchange Rate Regimes: Deeds vs....

  9. anorretais em regime: Topics by E-print Network

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

    Philip: This project assesses the effects of 20th Century fire exclusion on fire frequency and fuel hazard, as well 19 Classifying Exchange Rate Regimes: Deeds vs....

  10. aquic regimes: Topics by E-print Network

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

    Philip: This project assesses the effects of 20th Century fire exclusion on fire frequency and fuel hazard, as well 15 Classifying Exchange Rate Regimes: Deeds vs....

  11. Hydrothermal Alteration and Past and Present Thermal Regimes...

    Open Energy Info (EERE)

    OpenEI Reference LibraryAdd to library Journal Article: Hydrothermal Alteration and Past and Present Thermal Regimes in the Western Moat of Long Valley Caldera Abstract...

  12. Friction of Steel Sliding Under Boundary Lubrication Regime in...

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

    by reducing parasitic boundary regime friction losses and enable operation with lower viscosity oils while maintaining engine durability. deer08erck.pdf More Documents &...

  13. anderson localization regime: Topics by E-print Network

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

    The regimes of Anderson attractors can be potentially realized with polariton condensates lattices and cavity-QED arrays. T. V. Laptyeva; A. A. Tikhomirov; O. I. Kanakov; M....

  14. ECONOMIC REFORM AND COMMUNIST REGIME SURVIVABILTY: PAST, PRESENT, AND FUTURE 

    E-Print Network [OSTI]

    Nelson, John

    2006-08-16T23:59:59.000Z

    that are conducive to regime survival and/or collapse. The end objective herein is to provide projections for the future of the Castro regime in Cuba, which faces a critical juncture in the future with the impending death of its charismatic leader. I hypothesize...

  15. CSDP: Seismology of continental thermal regime

    SciTech Connect (OSTI)

    Aki, K.

    1989-04-01T23:59:59.000Z

    This is a progress report for the past one year of research (year 2 of 5-year project) under the project titled CSDP: Seismology of Continental Thermal Regime'', in which we proposed to develop seismological interpretation theory and methods applicable to complex structures encountered in continental geothermal areas and apply them to several candidate sites for the Continental Scientific Drilling Project. During the past year, two Ph.D. thesis works were completed under the present project. One is a USC thesis on seismic wave propagation in anisotropic media with application to defining fractures in the earth. The other is a MIT thesis on seismic Q and velocity structure for the magma-hydrothermal system of the Valles Caldera, New Mexico. The P.I. co-organized the first International Workshop on Volcanic Seismology at Capri, Italy in October 1988, and presented the keynote paper on the state-of-art of volcanic seismology''. We presented another paper at the workshop on Assorted Seismic Signals from Kilauea Volcano, Hawaii. Another international meeting, namely, the Chapman Conference on seismic anisotropy in the earth's crust at Berkeley, California in May 1988, was co-organized by the co-P.I. (P.C.L), and we presented our work on seismic waves in heterogeneous and anisotropic media. Adding the publications and presentations made in the past year to the list for the preceding year, the following table lists 21 papers published, submitted or presented in the past two years of the present project. 65 refs., 334 figs., 1 tab.

  16. A study of boiling water flow regimes at low pressures

    E-Print Network [OSTI]

    Fiori, Mario P.

    1966-01-01T23:59:59.000Z

    "A comprehensive experimental program to examine flow regimes at pressures below 100 psia for boiling of water in tubes was carried out. An electrical probe, which measures the resistance of the fluid between the centerline ...

  17. Fixed points, stable manifolds, weather regimes, and their predictability

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

    Deremble, Bruno; D'Andrea, Fabio; Ghil, Michael

    2009-01-01T23:59:59.000Z

    In a simple, one-layer atmospheric model, we study the links between low-frequency variability and the model’s fixed points in phase space. The model dynamics is characterized by the coexistence of multiple ''weather regimes.'' To investigate the transitions from one regime to another, we focus on the identification of stable manifolds associated with fixed points. We show that these manifolds act as separatrices between regimes. We track each manifold by making use of two local predictability measures arising from the meteorological applications of nonlinear dynamics, namely, ''bred vectors'' and singular vectors. These results are then verified in the framework of ensemblemore »forecasts issued from clouds (ensembles) of initial states. The divergence of the trajectories allows us to establish the connections between zones of low predictability, the geometry of the stable manifolds, and transitions between regimes.« less

  18. Fixed points, stable manifolds, weather regimes, and their predictability

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

    Deremble, Bruno [Laboratoire de Meteorologie Dynamique (CNRS and IPSL), Paris (France); D'Andrea, Fabio [Laboratoire de Meteorologie Dynamique (CNRS and IPSL), Paris (France); Ghil, Michael [Univ. of California, Los Angeles, CA (United Staes). Atmospheric and Oceanic Sciences and Inst. of Geophysics and Planetary Physics

    2009-01-01T23:59:59.000Z

    In a simple, one-layer atmospheric model, we study the links between low-frequency variability and the model’s fixed points in phase space. The model dynamics is characterized by the coexistence of multiple ''weather regimes.'' To investigate the transitions from one regime to another, we focus on the identification of stable manifolds associated with fixed points. We show that these manifolds act as separatrices between regimes. We track each manifold by making use of two local predictability measures arising from the meteorological applications of nonlinear dynamics, namely, ''bred vectors'' and singular vectors. These results are then verified in the framework of ensemble forecasts issued from clouds (ensembles) of initial states. The divergence of the trajectories allows us to establish the connections between zones of low predictability, the geometry of the stable manifolds, and transitions between regimes.

  19. High Biomass Low Export Regimes in the Southern Ocean

    E-Print Network [OSTI]

    Lam, Phoebe J.; Bishop, James K.B.

    2006-01-01T23:59:59.000Z

    of enhanced carbon biomass and export at 55 degrees S duringHigh Biomass Low Export Regimes in the Southern Ocean PhoebeSurface waters with high biomass levels and high proportion

  20. Regime Switching Models for Markets Alesis NovikTH

    E-Print Network [OSTI]

    classification into regimes are used. Both linear (PCA) and non-linear (LTSA) dimensionality reduction) . . . . . . . . . . . . . 10 2.3.2 Local Tangent Space Alignment (LTSA) . . . . . . . . . . . . 10 iv #12;3 Data 11 3.1 Real

  1. Plasma confinement regimes and collective modes characterizing them

    SciTech Connect (OSTI)

    Coppi, B.; Zhou, T. [Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

    2012-10-15T23:59:59.000Z

    A unified theory is presented for the modes that are excited at the edge of the plasma column and are important signatures of the advanced confinement regimes into which magnetically confined plasmas can be driven. In particular, the so-called EDA H-Regime, the Elmy H-Regime, and the I-Regime are considered. The modes that are identified theoretically have characteristics that are consistent with or have anticipated those of the modes observed experimentally for each of the investigated regimes. The phase velocities, the produced transport processes, the frequencies, the wavelengths, and the consistency with the direction of spontaneous rotation are the factors considered for comparison with the relevant experiments. The quasi-coherent mode [I. Cziegler, Ph.D. dissertation, Massachusetts Institute of Technology, Cambridge, MA, 2011] that is present in the EDA H-Regime has a phase velocity in the direction of the ion diamagnetic velocity in the plasma reference frame. Consequently, this is identified as a ballooning mode near finite Larmor radius marginal stability involving the effects of transverse ion viscosity and other dissipative effects. In this regime, impurities are driven outward by the combined effects of the local temperature gradients of the impurities and their thermal conductivity, while in the Elmy H-Regime impurities are driven toward the center of the plasma column. In the I-Regimes, the excited 'Heavy Particle' modes [B. Coppi and T. Zhou, Phys. Plasmas 19, 012302 (2012); Phys. Lett. A 375, 2916 (2011)] are not of the ballooning kind and are shown to expel the impurities toward the plasma edge in the presence of significant fluctuations. These modes can have a finite frequency of oscillation with a phase velocity in the direction of the electron diamagnetic velocity or they can be nearly purely growing, explaining why there are I-Regimes where fluctuations are not observed. Instead, the modes considered for the Elmy H-Regime are of the ballooning kind. They are driven by the combined effects of the plasma pressure gradient and the magnetic field curvature, are close to conditions under which the acquired growth rates are proportional to half power of the relevant dissipation parameters, involve the effects of finite magnetic diffusivity and finite electron thermal conductivity, and can have phase velocities in either direction.

  2. The regime change in the free exercise of religion debate

    E-Print Network [OSTI]

    Scheuermann, Leslie Theresa

    2013-02-22T23:59:59.000Z

    THE REGIME CHANGE IN THE FREE EXERCISE OF RELIGION DEBATE A Senior Honors Thesis by LESLIE THERESA SCHEUERMANN Submitted to the Office of Honors Programs Ec Academic Scholarships Texas ARM University in partial fulfillment... of the requirements of the UNIVERSITY UNDERGRADUATE RESEARCH FELLOWS April 2004 Major: Political Science THE REGIME CHANGE IN THE FREE EXERCISE OF RELIGION DEBATE A Senior Honors Thesis by LESLIE THERESA SCHEUERMANN Submitted to the Office of Honors Programs...

  3. Inverse Cascade Regime in Shell Models of 2-Dimensional Turbulence

    E-Print Network [OSTI]

    Thomas Gilbert; Victor S. L'vov; Anna Pomyalov; Itamar Procaccia

    2002-01-13T23:59:59.000Z

    We consider shell models that display an inverse energy cascade similar to 2-dimensional turbulence (together with a direct cascade of an enstrophy-like invariant). Previous attempts to construct such models ended negatively, stating that shell models give rise to a "quasi-equilibrium" situation with equipartition of the energy among the shells. We show analytically that the quasi-equilibrium state predicts its own disappearance upon changing the model parameters in favor of the establishment of an inverse cascade regime with K41 scaling. The latter regime is found where predicted, offering a useful model to study inverse cascades.

  4. Ultrafast lasers in the femtosecond regime: generation, amplification

    E-Print Network [OSTI]

    Ultrafast lasers in the femtosecond regime: generation, amplification and measurement Pedro can be explored. Ultrafast elec- tromagnetic fields are one of those tools, as they allow the probing is divided in two parts one that deals with the generation and amplification of ultrashort pulses the second

  5. Thermodynamic control and dynamical regimes in protein folding

    E-Print Network [OSTI]

    P. F. N. Faisca; R. C. Ball

    2001-10-07T23:59:59.000Z

    Monte Carlo simulations of a simple lattice model of protein folding show two distinct regimes depending on the chain length. The first regime well describes the folding of small protein sequences and its kinetic counterpart appears to be single exponential in nature, while the second regime is typical of sequences longer than 80 amino acids and the folding performance achievable is sensitive to target conformation. The extent to which stability, as measured by the energy of a sequence in the target, is an essential requirement and affects the folding dynamics of protein molecules in the first regime is investigated. The folding dynamics of sequences whose design stage was restricted to a certain fraction of randomly selected amino acids shows that while some degree of stability is a necessary and sufficient condition for successful folding, designing sequences that provide the lowest energy in the target seems to be a superfluous constraint. By studying the dynamics of under annealed but otherwise freely designed sequences we explore the relation between stability and kinetic accessibility. We find that there is no one-to-one correspondence between having low energy and folding quickly to the target, as only a small fraction of the most stable sequences were also found to fold relatively quickly.

  6. Strong Correlation Effects in Graphene in the Quantum Hall Regime

    E-Print Network [OSTI]

    Paris-Sud 11, Université de

    Strong Correlation Effects in Graphene in the Quantum Hall Regime Mark Oliver Goerbig 16 June 2008;Graphene = 2D Graphite 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 degeneracy: spin valley Energy electrons holes k k k ky x x yK' K K' K K K' #12;Correlations in graphene

  7. Multi-Fluid Modeling of Low-Recycling Divertor Regimes

    SciTech Connect (OSTI)

    Smirnov, R. D. [University of California, La Jolla; Pigarov, A. Y. [University of California, La Jolla; Krasheninnikov, S. I. [University of California, La Jolla; Rognlien, T. D. [Lawrence Livermore National Laboratory (LLNL); Soukhanovskii, V. A. [Lawrence Livermore National Laboratory (LLNL); Rensink, M. E. [Lawrence Livermore National Laboratory (LLNL); Maingi, Rajesh [ORNL; Skinner, C. H. [Princeton Plasma Physics Laboratory (PPPL); Stotler, D. P. [Princeton Plasma Physics Laboratory (PPPL); Bell, R. E. [Princeton Plasma Physics Laboratory (PPPL); Kugel, H. W. [Princeton Plasma Physics Laboratory (PPPL)

    2010-01-01T23:59:59.000Z

    The low-recycling regimes of divertor operation in a single-null NSTX magnetic configuration are studied using computer simulations with the edge plasma transport code UEDGE. The edge plasma transport properties pertinent to the low-recycling regimes are demonstrated. These include the flux-limited character of the parallel heat transport and the high plasma temperatures with the flattened profiles in the scrape-off-layer. It is shown that to maintain the balance of particle fluxes at the core interface the deuterium gas puffing rate should increase as the divertor recycling coefficient decreases. The radial profiles of the heat load to the outer divertor plate, the upstream radial plasma profiles, and the effects of the cross-field plasma transport in the low-recycling regimes are discussed. It is also shown that recycling of lithium impurities evaporating from the divertor plate at high surface temperatures can reverse the low-recycling divertor operational regime to the high-recycling one and may cause thermal instability of the divertor plate. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

  8. Northern Hemisphere circulation regimes: observed, simulated and predicted

    E-Print Network [OSTI]

    Monahan, Adam Hugh

    days. The role of high- and low-frequency dynamics is studied and results indicate that they are both involved in the formation, maintenance and decay of the regimes. A global coupled climate model also residence times and spatial structures are predicted to change over the next century given increasing con

  9. Tachyon warm inflationary universe model in the weak dissipative regime

    E-Print Network [OSTI]

    Sergio del Campo; Ramon Herrera; Joel Saavedra

    2008-12-05T23:59:59.000Z

    Warm inflationary universe model in a tachyon field theory is studied in the weak dissipative regime. We develop our model for an exponential potential and the dissipation parameter $\\Gamma=\\Gamma_0$=constant. We describe scalar and tensor perturbations for this scenario.

  10. The Harrison Diffusion Kinetics Regimes in Solute Grain Boundary Diffusion

    SciTech Connect (OSTI)

    Belova, Irina [University of Newcastle, NSW, Australia; Fiedler, T [University of Newcastle, NSW, Australia; Kulkarni, Nagraj S [ORNL; Murch, Prof. Graeme [University of Newcastle, NSW, Australia

    2012-01-01T23:59:59.000Z

    Knowledge of the limits of the principal Harrison kinetics regimes (Type-A, B and C) for grain boundary diffusion is very important for the correct analysis of the depth profiles in a tracer diffusion experiment. These regimes for self-diffusion have been extensively studied in the past by making use of the phenomenological Lattice Monte Carlo (LMC) method with the result that the limits are now well established. The relationship of those self-diffusion limits to the corresponding ones for solute diffusion in the presence of solute segregation to the grain boundaries remains unclear. In the present study, the influence of solute segregation on the limits is investigated with the LMC method for the well-known parallel grain boundary slab model by showing the equivalence of two diffusion models. It is shown which diffusion parameters are useful for identifying the limits of the Harrison kinetics regimes for solute grain boundary diffusion. It is also shown how the measured segregation factor from the diffusion experiment in the Harrison Type-B kinetics regime may differ from the global segregation factor.

  11. Dielectric function of diluted magnetic semiconductors in the infrared regime

    E-Print Network [OSTI]

    Aguado, R.; Lopez-Sancho, MP; Sinova, Jairo; Brey, L.

    2004-01-01T23:59:59.000Z

    We present a study of the dielectric function of metallic (III,Mn)V diluted magnetic semiconductors in the infrared regime. Our theoretical approach is based on the kinetic exchange model for carrier induced (III,Mn)V ferromagnetism. The dielectric...

  12. Critical fields in ferromagnetic thin films: Identification of four regimes

    E-Print Network [OSTI]

    Otto, Felix

    Critical fields in ferromagnetic thin films: Identification of four regimes Rub´en Cantero­film elements is a paradigm for a multi­scale pattern­forming system. On one hand, there is a material length functional ceases to be positive definite. The degenerate subspace consists of the "unstable modes

  13. Adaptation of two lucerne populations to different cutting regimes (*)

    E-Print Network [OSTI]

    Boyer, Edmond

    Adaptation of two lucerne populations to different cutting regimes (*) Fabio VERONESI, Anna MARIANI Piante foraggere del Consiglio nazionale delle Ricerche, Perugia, Italia SUMMARY Lucerne, Medicago sativa of proteic concentrates. For this purpose the behaviour of two lucerne populations was studied under

  14. Detecting and Forecasting Economic Regimes in Automated Exchanges

    E-Print Network [OSTI]

    Ketter, Wolfgang

    Detecting and Forecasting Economic Regimes in Automated Exchanges Wolfgang Ketter , John Collins. of Mgmt., Erasmus University Dept. of Computer Science and Engineering, University of Minnesota Dept,gini,schrater}@cs.umn.edu, agupta@csom.umn.edu Abstract We present basic building blocks of an agent that can use observable market

  15. Detecting and Forecasting Economic Regimes in Automated Exchanges

    E-Print Network [OSTI]

    Ketter, Wolfgang

    Detecting and Forecasting Economic Regimes in Automated Exchanges Wolfgang Ketter # , John Collins, Rotterdam Sch. of Mgmt., Erasmus University + Dept. of Computer Science and Engineering, University wketter@rsm.nl, {jcollins,gini,schrater}@cs.umn.edu, agupta@csom.umn.edu Abstract We present basic

  16. Two regimes in the regularity of sunspot number

    SciTech Connect (OSTI)

    Shapoval, A.; Shnirman, M. [IEPT RAS, Profsoyuznaya str. 84/32, 117997 Moscow (Russian Federation); Le Mouël, J. L.; Courtillot, V. [IPGP, 1 rue Jussieu, F-75005, Paris (France)

    2013-12-20T23:59:59.000Z

    Sunspot numbers WN display quasi-periodical variations that undergo regime changes. These irregularities could indicate a chaotic system and be measured by Lyapunov exponents. We define a functional ? (an 'irregularity index') that is close to the (maximal) Lyapunov exponent for dynamical systems and well defined for series with a random component: this allows one to work with sunspot numbers. We compute ? for the daily WN from 1850 to 2012 within 4 yr sliding windows: ? exhibit sharp maxima at solar minima and secondary maxima at solar maxima. This pattern is reflected in the ratio R of the amplitudes of the main versus secondary peaks. Two regimes have alternated in the past 150 yr, R1 from 1850 to 1915 (large ? and R values) and R2 from 1935 to 2005 (shrinking difference between main and secondary maxima, R values between 1 and 2). We build an autoregressive model consisting of Poisson noise plus an 11 yr cycle and compute its irregularity index. The transition from R1 to R2 can be reproduced by strengthening the autocorrelation a of the model series. The features of the two regimes are stable for model and WN with respect to embedding dimension and delay. Near the time of the last solar minimum (?2008), the irregularity index exhibits a peak similar to the peaks observed before 1915. This might signal a regime change back from R2 to R1 and the onset of a significant decrease of solar activity.

  17. Nano-optomechanical measurement in the photon counting regime

    E-Print Network [OSTI]

    de Lépinay, Laure Mercier; Rohr, Sven; Gloppe, Arnaud; Kuhn, Aurélien; Verlot, Pierre; Dupont-Ferrier, Eva; Besga, Benjamin; Arcizet, Olivier

    2015-01-01T23:59:59.000Z

    Optically measuring in the photon counting regime is a recurrent challenge in modern physics and a guarantee to develop weakly invasive probes. Here we investigate this idea on a hybrid nano-optomechanical system composed of a nanowire hybridized to a single Nitrogen-Vacancy (NV) defect. The vibrations of the nanoresonator grant a spatial degree of freedom to the quantum emitter and the photon emission event can now vary in space and time. We investigate how the nanomotion is encoded on the detected photon statistics and explore their spatio-temporal correlation properties. This allows a quantitative measurement of the vibrations of the nanomechanical oscillator at unprecedentedly low light intensities in the photon counting regime when less than one photon is detected per oscillation period, where standard detectors are dark-noise-limited. These results have implications for probing weakly interacting nanoresonators, for low temperature experiments and for investigating single moving markers.

  18. Couette flow regimes with heat transfer in rarefied gas

    SciTech Connect (OSTI)

    Abramov, A. A., E-mail: alabr54@mail.ru; Butkovskii, A. V., E-mail: albutkov@mail.ru [Zhukovski Central Aerohydrodynamics Institute (Russian Federation)

    2013-06-15T23:59:59.000Z

    Based on numerical solution of the Boltzmann equation by direct statistic simulation, the Couette flow with heat transfer is studied in a broad range of ratios of plate temperatures and Mach numbers of a moving plate. Flow regime classification by the form of the dependences of the energy flux and friction stress on the Knudsen number Kn is proposed. These dependences can be simultaneously monotonic and nonmonotonic and have maxima. Situations are possible in which the dependence of the energy flux transferred to a plate on Kn has a minimum, while the dependence of the friction stress is monotonic or even has a maximum. Also, regimes exist in which the dependence of the energy flux on Kn has a maximum, while the dependence of the friction stress is monotonic, and vice versa.

  19. Quantum theory as a critical regime of language dynamics

    E-Print Network [OSTI]

    Alexei Grinbaum

    2015-01-12T23:59:59.000Z

    Quantum mechanics relies on the cut between the observer and the quantum system, but it does not define the observer physically. We propose an informational definition based on bounded complexity of strings. Language dynamics then leads to an emergent continuous model in the critical regime. Restricting it to a subfamily of `quantum' binary codes describing `bipartite systems', we find strong evidence of an upper bound on bipartite correlations equal to 2.82537. This is measurably different from the Tsirelson bound of the CHSH inequality. If such a reconstruction of quantum theory is experimentally confirmed, it would show that the Hilbert space formalism is but an effective description of a fundamental `linguistic' theory in the critical regime.

  20. Power Counting Regime of Chiral Extrapolation and Beyond

    E-Print Network [OSTI]

    Derek B. Leinweber; Anthony W. Thomas; Ross D. Young

    2005-10-12T23:59:59.000Z

    Finite-range regularised (FRR) chiral effective field theory is presented in the context of approximation schemes ubiquitous in modern lattice QCD calculations. Using FRR techniques, the power-counting regime (PCR) of chiral perturbation theory can be estimated. To fourth-order in the expansion at the 1% tolerance level, we find m_\\pi < 180 MeV for the PCR, extending only a small distance beyond the physical pion mass.

  1. Power counting regime of chiral extrapolation and beyond

    SciTech Connect (OSTI)

    Derek Leinweber; Anthony Thomas; Ross Young

    2005-09-29T23:59:59.000Z

    Finite-range regularized chiral effective field theory is presented in the context of approximation schemes ubiquitous in modern lattice QCD calculations. Using FRR techniques, the power-counting regime (PCR) of chiral perturbation theory can be estimated. To fourth-order in the expansion at the 1% tolerance level, we find 0 {le} m{sub {pi}} {le} 180 MeV for the PCR, extending only a small distance beyond the physical pion mass.

  2. Warm inflation dynamics in the low temperature regime

    SciTech Connect (OSTI)

    Bastero-Gil, Mar [Departamento de Fisica Teorica y del Cosmos, Universidad de Granada, Granada-18071 (Spain); Berera, Arjun [School of Physics, University of Edinburgh, Edinburgh, EH9 3JZ (United Kingdom)

    2007-08-15T23:59:59.000Z

    Warm inflation scenarios are studied with the dissipative coefficient computed in the equilibrium approximation. Use is made of the analytical expressions available in the low temperature regime with focus on the possibility of achieving strong dissipation within this approximation. Two different types of models are examined: monomial or equivalently chaotic type potentials, and hybrid like models where the energy density during inflation is dominated by the false vacuum. In both cases dissipation is shown to typically increase during inflation and bring the system into the strong dissipative regime. Observational consequences are explored for the amplitude of the primordial spectrum and the spectral index, which translate into constraints on the number of fields mediating the dissipative mechanism, and the number of light degrees of freedom produced during inflation. This paper furthers the foundational development of warm inflation dynamics from first principles quantum field theory by calculating conservative lower bound estimates on dissipative effects during inflation using the well established thermal equilibrium approximation. This approximation does not completely represent the actual physical system and earlier work has shown relaxing both the equilibrium and low temperature constraints can substantially enlarge the warm inflation regime, but these improvements still need further theoretical development.

  3. INTERFACIAL AREA TRANSPORT AND REGIME TRANSITION IN COMBINATORIAL CHANNELS

    SciTech Connect (OSTI)

    Seugjin Kim

    2011-01-28T23:59:59.000Z

    . This study investigates the geometric effects of 90-degree vertical elbows and flow configurations in two-phase flow. The study shows that the elbows make a significant effect on the transport characteristics of two-phase flow, which includes the changes in interfacial structures, bubble interaction mechanisms and flow regime transition. The effect of the elbows is characterized for global and local two-phase flow parameters. The global two-phase flow parameters include two-phase pressure, interfacial structures and flow regime transition. In order to characterize the frictional pressure drop and minor loss across the vertical elbows, pressure measurements are obtained across the test section over a wide range of flow conditions in both single-phase and two-phase flow conditions. A two-phase pressure drop correlation analogous to Lockhart-Martinelli correlation is proposed to predict the minor loss across the elbows. A high speed camera is employed to perform extensive flow visualization studies across the elbows in vertical upward, horizontal and vertical downward sections and modified flow regime maps are proposed. It is found that modified flow regime maps immediately downstream of the vertical upward elbow deviate significantly from the conventional flow regime map. A qualitative assessment of the counter-current flow limitation characteristics specific to the current experimental facility is performed. A multi-sensor conductivity probe is used to measure local two-phase flow parameters such as: void fraction, bubble velocity, interfacial area concentration and bubble frequency. The local measurements are obtained for six different flow conditions at ten measurement locations along axial direction of the test section. Both the vertical-upward and vertical-downward elbows have a significant impact on bubble distribution, resulting in, a bimodal distribution along the horizontal radius of the tube cross-section and migration of bubbles towards the inside of the elbow curvatures immediately downstream of the vertical-upward and vertical-downward elbows, respectively. The elbow effect decays further downstream of the elbow and bubbles migrate to more conventional distribution patterns. The axial transport of void fraction and interfacial area concentration shows that the elbows promote bubble disintegration. Preliminary comparisons between the interfacial area transport model and the experimental data for verticalupward and vertical downward section are also presented.

  4. Regime legitimacy and military resilience : lessons from World War II and Yugoslavia

    E-Print Network [OSTI]

    Russell, Jacob Hale

    2008-01-01T23:59:59.000Z

    This thesis argues that regime legitimacy creates military resilience. A regime is legitimate when its constituents believe-whether because of ideological solidarity, patriotism, nationalism, or good governance-that a ...

  5. Justifying power : ruling group dominance and regime justification in multi-ethnic states

    E-Print Network [OSTI]

    Berman, Deborah Rachel

    2011-01-01T23:59:59.000Z

    The current but inconsistent upheaval in the Middle East suggests variations in what will topple regimes, and thus in how regimes have laid the groundwork to remain in power. This thesis examines variation in a social ...

  6. Analytical innovations bring millions in royalties | EMSL

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

    2015 Advances enhance performance of mass spectrometers Yehia Ibrahim, a scientist at PNNL, is part of a team developing the new Ion Mobility Spectrometry-Mass Spectrometry...

  7. Patent Hold-Up and Royalty Stacking

    E-Print Network [OSTI]

    Lemley, Mark A; Shapiro, Carl

    2007-01-01T23:59:59.000Z

    the inventor of the intermittent windshield wiper couldclaim the wiper alone, or alternatively could choose toan intermittent windshield wiper. The invention is the same,

  8. Patent Hold-Up and Royalty Stacking

    E-Print Network [OSTI]

    Lemley, Mark A; Shapiro, Carl

    2007-01-01T23:59:59.000Z

    patented feature to the downstream firm, in comparison within question with other downstream firms if its patent isdisputes settle). When the downstream firms are rivals and

  9. Theory of the Anomalous Hall Effect in the Insulating Regime 

    E-Print Network [OSTI]

    Liu, Xiongjun

    2012-10-19T23:59:59.000Z

    .3 The upper limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 6.4 Dependence of the AHC on DOS . . . . . . . . . . . . . . . . . . . . 116 6.5 Efros-shklovskii hopping conduction regime . . . . . . . . . . . . . . . 119 6.6 Activation E3... in this figure is given by ? = 1.5 ? 1.7 [38]. . . . . . . . . . . . . . . 27 xi FIGURE Page 2.8 Experimental data from Ref. [39]. (a) Temperature dependence of the longitudinal resistance versus 1/T (a) and 1/T 1/2 (b-d). The samples A, B, and C are grow...

  10. Rapidity gap survival in the black-disk regime

    SciTech Connect (OSTI)

    Leonid Frankfurt; Charles Hyde; Mark Strikman; Christian Weiss

    2007-04-16T23:59:59.000Z

    We summarize how the approach to the black-disk regime (BDR) of strong interactions at TeV energies influences rapidity gap survival in exclusive hard diffraction pp -> p + H + p (H = dijet, Qbar Q, Higgs). Employing a recently developed partonic description of such processes, we discuss (a) the suppression of diffraction at small impact parameters by soft spectator interactions in the BDR; (b) further suppression by inelastic interactions of hard spectator partons in the BDR; (c) correlations between hard and soft interactions. Hard spectator interactions substantially reduce the rapidity gap survival probability at LHC energies compared to previously reported estimates.

  11. Electrophoresis of colloidal dispersions in the low-salt regime

    E-Print Network [OSTI]

    Vladimir Lobaskin; Burkhard Duenweg; Martin Medebach; Thomas Palberg; Christian Holm

    2006-12-15T23:59:59.000Z

    We study the electrophoretic mobility of spherical charged colloids in a low-salt suspension as a function of the colloidal concentration. Using an effective particle charge and a reduced screening parameter, we map the data for systems with different particle charges and sizes, including numerical simulation data with full electrostatics and hydrodynamics and experimental data for latex dispersions, on a single master curve. We observe two different volume fraction-dependent regimes for the electrophoretic mobility that can be explained in terms of the static properties of the ionic double layer.

  12. Laser in ultrastrong light-matter coupling regime

    E-Print Network [OSTI]

    Motoaki Bamba; Tetsuo Ogawa

    2014-10-15T23:59:59.000Z

    In ultrastrong light-matter coupling regime, it is found theoretically that lasing accompanies odd-order harmonics of radiation field both inside and outside the cavity and even-order harmonics of atomic population. This qualitative difference from the normal laser is generally obtained independent of whether we choose the Coulomb gauge or the electric-dipole one, although quantitative behaviors strongly depend on the gauge choice due to the two-level and single-mode approximations used in our calculation. The lasing also shows a bistability for strong enough light-matter coupling and low enough cavity loss.

  13. No-boundary measure in the regime of eternal inflation

    SciTech Connect (OSTI)

    Hartle, James [Department of Physics, University of California, Santa Barbara, California 93106 (United States); Hawking, S. W. [DAMTP, CMS, Wilberforce Road, CB3 0WA Cambridge (United Kingdom); Hertog, Thomas [APC, UMR 7164 (CNRS, Universite Paris 7), 10 rue A. Domon et L. Duquet, 75205 Paris, France, and International Solvay Institutes, Boulevard du Triomphe, ULB-C.P. 231, 1050 Brussels (Belgium)

    2010-09-15T23:59:59.000Z

    The no-boundary wave function (NBWF) specifies a measure for prediction in cosmology that selects inflationary histories and remains well behaved for spatially large or infinite universes. This paper explores the predictions of the NBWF for linear scalar fluctuations about homogeneous and isotropic backgrounds in models with a single scalar field moving in a quadratic potential. We treat both the spacetime geometry of the universe and the observers inhabiting it quantum mechanically. We evaluate top-down probabilities for local observations that are conditioned on the NBWF and on part of our data as observers of the universe. For models where the most probable histories do not have a regime of eternal inflation, the NBWF predicts homogeneity on large scales, a spectrum of observable fluctuations with a small non-Gaussian component, and a small amount of inflation in our past. By contrast, for models where the dominant histories have a regime of eternal inflation, the NBWF predicts significant inhomogeneity on scales much larger than the present horizon, a Gaussian spectrum of observable fluctuations, and a long period of inflation in our past. The absence or presence of non-Gaussianity in our observable universe therefore provides information about its global structure, assuming the NBWF.

  14. THE TWO REGIMES OF PHOTOSPHERIC MOTIONS IN {alpha} HYDRA

    SciTech Connect (OSTI)

    Gray, David F., E-mail: dfgray@uwo.ca [Department of Physics and Astronomy, University of Western Ontario, London, Ontario N6A 3K7 (Canada)

    2013-02-10T23:59:59.000Z

    High-resolution spectroscopic observations of {alpha} Hya were acquired between 2003 and 2010. Analysis of line shifts, differential shifts, line widths, and line bisectors points to two regimes of velocity fields in the photosphere of {alpha} Hya: (1) normal granulation embedded in (2) large convection cells. Variations occur on a wide range of timescales, from several years on down. Radial velocity variations, which are irregular and span 786 m s{sup -1}, have a distribution consistent with a true mean rise velocity of the large cells of {approx}725 m s{sup -1} and a dispersion of {approx}220 m s{sup -1}. The distribution of granulation velocities, as measured from the widths of spectral lines, shows only small variations, consistent with the two regime concepts. On the multi-year timescale, radial velocity changes, small temperature variations ({approx}10 K), and small line-width variations ({approx}<0.8%) track each other, possibly with phase shifts. The granulation velocity gradient for {alpha} Hya is about half as large as the Sun's and no variation with time was seen, implying that any variation in velocity gradient from one large cell to the next must be less than a few percent. The asymmetry in the granulation velocity distribution, as specified in the flux deficit, is smaller than expected for {alpha} Hya's position in the HR diagram and appears to be variable.

  15. Comment on Energy Level Statistics in the Mixed Regime

    E-Print Network [OSTI]

    Marko Robnik; Tomaz Prosen

    1997-06-23T23:59:59.000Z

    We comment on the recent paper by Abul-Magd (J.Phys.A: Math.Gen. 29 (1996) 1) concerning the energy level statistics in the mixed regime, i.e. such having the mixed classical dynamics where regular and chaotic regions coexist in the phase space. We point out that his basic assumption on the additive property of the level-repulsion function $r(S)$ (conditional probability density) in the sense of dividing it linearly into the regular and chaotic part in proportion to the classical fractional phase space volumes $\\rho_1$ and $\\rho_2=q$ is not justified, since among other things, it relies on the type of Berry's ergodic assumption, which however is right only in a homogeneous ensemble of ergodic systems, but not in the neighbourhood of an integrable system. Thus his resulting distribution cannot be regarded as a theoretically well founded object. We point out that the semiclassical limiting energy level spacing distribution must be of Berry-Robnik (1984) type, and explain what transitional behaviour of the Brody-type (with fractional power-law energy level repulsion) we observe in the near semiclassical regime where effective $\\hbar$ is not yet small enough. Thus we refer to the derivation, arguments and conclusions in our paper (Prosen and Robnik, J.Phys.A: Math.Gen. 26 (1994) 8059), and explain again the behaviour in this double transition region.

  16. Adaptive two-regime method: Application to front propagation

    SciTech Connect (OSTI)

    Robinson, Martin, E-mail: martin.robinson@maths.ox.ac.uk; Erban, Radek, E-mail: erban@maths.ox.ac.uk [Mathematical Institute, University of Oxford, Andrew Wiles Building, Radcliffe Observatory Quarter, Woodstock Road, Oxford OX2 6GG (United Kingdom)] [Mathematical Institute, University of Oxford, Andrew Wiles Building, Radcliffe Observatory Quarter, Woodstock Road, Oxford OX2 6GG (United Kingdom); Flegg, Mark, E-mail: mark.flegg@monash.edu [School of Mathematical Sciences, Faculty of Science, Monash University Wellington Road, Clayton, Victoria 3800 (Australia)] [School of Mathematical Sciences, Faculty of Science, Monash University Wellington Road, Clayton, Victoria 3800 (Australia)

    2014-03-28T23:59:59.000Z

    The Adaptive Two-Regime Method (ATRM) is developed for hybrid (multiscale) stochastic simulation of reaction-diffusion problems. It efficiently couples detailed Brownian dynamics simulations with coarser lattice-based models. The ATRM is a generalization of the previously developed Two-Regime Method [Flegg et al., J. R. Soc., Interface 9, 859 (2012)] to multiscale problems which require a dynamic selection of regions where detailed Brownian dynamics simulation is used. Typical applications include a front propagation or spatio-temporal oscillations. In this paper, the ATRM is used for an in-depth study of front propagation in a stochastic reaction-diffusion system which has its mean-field model given in terms of the Fisher equation [R. Fisher, Ann. Eugen. 7, 355 (1937)]. It exhibits a travelling reaction front which is sensitive to stochastic fluctuations at the leading edge of the wavefront. Previous studies into stochastic effects on the Fisher wave propagation speed have focused on lattice-based models, but there has been limited progress using off-lattice (Brownian dynamics) models, which suffer due to their high computational cost, particularly at the high molecular numbers that are necessary to approach the Fisher mean-field model. By modelling only the wavefront itself with the off-lattice model, it is shown that the ATRM leads to the same Fisher wave results as purely off-lattice models, but at a fraction of the computational cost. The error analysis of the ATRM is also presented for a morphogen gradient model.

  17. Enhanced Heat Flow in the Hydrodynamic Collisionless Regime

    SciTech Connect (OSTI)

    Meppelink, R.; Rooij, R. van; Vogels, J. M.; Straten, P. van der [Atom Optics and Ultrafast Dynamics, Utrecht University, P.O. Box 80000, 3508 TA Utrecht (Netherlands)

    2009-08-28T23:59:59.000Z

    We study the heat conduction of a cold, thermal cloud in a highly asymmetric trap. The cloud is axially hydrodynamic, but due to the asymmetric trap radially collisionless. By locally heating the cloud we excite a thermal dipole mode and measure its oscillation frequency and damping rate. We find an unexpectedly large heat conduction compared to the homogeneous case. The enhanced heat conduction in this regime is partially caused by atoms with a high angular momentum spiraling in trajectories around the core of the cloud. Since atoms in these trajectories are almost collisionless they strongly contribute to the heat transfer. We observe a second, oscillating hydrodynamic mode, which we identify as a standing wave sound mode.

  18. Three regimes of extrasolar planets inferred from host star metallicities

    E-Print Network [OSTI]

    Buchhave, Lars A; Latham, David W; Sasselov, Dimitar; Cochran, William D; Endl, Michael; Isaacson, Howard; Juncher, Diana; Marcy, Geoffrey W

    2014-01-01T23:59:59.000Z

    Approximately half of the extrasolar planets (exoplanets) with radii less than four Earth radii are in orbits with short periods. Despite their sheer abundance, the compositions of such planets are largely unknown. The available evidence suggests that they range in composition from small, high-density rocky planets to low-density planets consisting of rocky cores surrounded by thick hydrogen and helium gas envelopes. Understanding the transition from the gaseous planets to Earth-like rocky worlds is important to estimate the number of potentially habitable planets in our Galaxy and provide constraints on planet formation theories. Here we report the abundances of heavy elements (that is, the metallicities) of more than 400 stars hosting 600 exoplanet candidates, and find that the exoplanets can be categorized into three populations defined by statistically distinct (~ 4.5{\\sigma}) metallicity regions. We interpret these regions as reflecting the formation regimes of terrestrial-like planets (radii less than 1...

  19. Using Biofuel Tracers to Study Alternative Combustion Regimes

    SciTech Connect (OSTI)

    Mack, J H; Flowers, D L; Buchholz, B A; Dibble, R W

    2006-02-14T23:59:59.000Z

    Interest in the use of alternative fuels and combustion regimes is increasing as the price of petroleum climbs. The inherently higher efficiency of Diesel engines has led to increased adoption of Diesels in Europe, capturing approximately 40% of the new passenger car market. Unfortunately, lower CO{sub 2} emissions are countered with higher nitrogen oxides (NOx) and particulate matter (PM) emissions, and higher noise. Noise and PM have traditionally been the obstacles toward consumer acceptance of Diesel passenger cars in North America, while NOx (a key component in photochemical smog) has been more of an engineering challenge. Diesels are lean burning (combustion with excess oxygen) and reducing NOx to N2 in an oxygen rich environment is difficult. Adding oxygenated compounds to the fuel helps reduce PM emissions, but relying on fuel alone to reduce PM is unrealistic. Keeping peak combustion temperature below 1700 K prevents NOx formation. Altering the combustion regime to burn at temperatures below the NOx threshold and accept a wide variety of fuels seems like a promising alternative for future engines. Homogeneous Charge Compression Ignition (HCCI) is a possible solution. Fuel and air are well mixed prior to intake into a cylinder (homogeneous charge) and ignition occurs by compression of the fuel-air mixture by the piston. HCCI is rapid and relatively cool, producing little NOx and PM. Unfortunately, it is hard to control since HCCI is initiated by temperature and pressure instead of a spark or direct fuel injection. We investigate biofuel HCCI combustion, and use intrinsically labeled biofuels as tracers of HCCI combustion. Data from tracer experiments are used to validate combustion modeling.

  20. Two-phase stratified flow regime transition analysis for low gravity conditions

    E-Print Network [OSTI]

    Miller, Kathryn M.

    1990-01-01T23:59:59.000Z

    the effect of the gas and liquid mass flow rates, fluid properties, pipe diameter, angle of pipe inclination, and gravity. Five basic flow regimes were considered: smooth stratified, wavy stratified, intermittent (slug and plug), annular with dispersed... Numerical Solution The premise used in this work for solving for the transition boundary is based on the assumption that the transition from the stratified regime to some other regime will occur when a very small wave exists on the surface of the liquid...

  1. COLLECTIVE AGREEMENT MEMORIAL UNIVERSITY OF NEWFOUNDLAND

    E-Print Network [OSTI]

    Oyet, Alwell

    or Lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

  2. COLLECTIVE AGREEMENT MEMORIAL UNIVERSITY OF NEWFOUNDLAND

    E-Print Network [OSTI]

    Oyet, Alwell

    or Lockout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

  3. COLLECTIVE AGREEMENT MEMORIAL UNIVERSITY OF NEWFOUNDLAND

    E-Print Network [OSTI]

    Oyet, Alwell

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 No Strike or Lockout

  4. Memorial University of Newfoundland Diving Safety

    E-Print Network [OSTI]

    deYoung, Brad

    .2 Maintenance and Inspections 17 9.3 Use of Diving Equipment 17 9.4 Equipment Procedures 18 9.5 Inspection PROCEDURES 20 12.1 Planning of Diving Operations 21 12.2 Adherence to Planned Depth Procedures 21 12 safety manual is designed to provide Memorial University scientific divers with standards and procedures

  5. Environmental Assessment (Newfoundland and Labrador, Canada)

    Broader source: Energy.gov [DOE]

    The Environmental Protection Act states that the purpose of environmental assessment is to "protect the environment and quality of life of the people of the province; and facilitate the wise...

  6. COLLECTIVE AGREEMENT MEMORIAL UNIVERSITY OF NEWFOUNDLAND

    E-Print Network [OSTI]

    Warkentin, Ian G.

    OF PUBLIC AND PRIVATE EMPLOYEES (LOCAL 7803 and 1804) On Behalf of Campus Enforcement and Patrol Personnel Action 10 18. Personal Files 11 19. Seniority 11 20. Sick Leave 13 21. Other Leaves 15 22. Resignations Evaluation 37 45. Duration of Agreement 39 46. Criminal or Legal Liability 39 Schedule A - Rates of Pay 41

  7. DIII-D Quiescent Double Barrier Regime Experiments and Modeling

    SciTech Connect (OSTI)

    Casper, T.A.; Burrell, K.H.; DeBoo, J.C.; Doyle, E.J.; Gohil, P.; Greenfield, C.M.; Groebner, R.J.; Jayakumar, R.J.; Kaiser, T.B .; Kinsey, J.E.; Lasnier, C.J.; Lao, L.L.; Makowski, M.A.; McKee, G.R.; Moyer, R.A.; Pearlstein, L.D.; Rhodes, T.L.; Rudakov, D.L.; Staebler, G.M.; West, W.P.

    2002-07-01T23:59:59.000Z

    Discharges characteristic of the quiescent double barrier (QDB) regime [1] are attractive for development of advanced tokamak (AT) scenarios relevant to fusion reactors [2] and they offer near term advantages for exploring and developing control techniques. We continue to explore the QDB regime in DIII-D to improve understanding of formation and control of these discharges and to explore scaling to steady-state reactors. The formation of an internal transport barrier (ITB) provides a naturally peaked core pressure profile. This peaking in density in combination with the H-mode-like edge barrier and pedestal provide a path to high performance. We have achieved {beta}{sub N}H{sub 89P} {approx} 7 for several energy confinement times ({le} 25 {tau}{sub E}). We discuss here a combination of modeling and experiments using electron cyclotron heating (ECH) and current drive (ECCD) to demonstrate steady state, current-driven equilibria and control of the current distribution, safety factor q, and density profile. Experimental conditions leading to formation of the QDB discharge require establishing two distinct and separated barrier regions, a core region near {rho} {approx} 0.5 and an edge barrier outside {rho} > 0.95, {rho} is the square root of toroidal flux (radial coordinate). A region of higher transport due to a change in polarity of the E x B shearing rate [1] separates the core barrier from the H-mode edge. It is this separation in barriers that so far has required use of counter-NBI to establish QDB conditions. Balanced NBI should also allow this separation of barriers. The edge corresponds to the quiescent H-mode (QH) conditions [3]. In this quiescent edge region, the normally observed transient loss associated with edge-localized-mode (ELM) activity is replaced with a steady particle loss driven by a coherent oscillation residing outside the pedestal region. This edge harmonic oscillation (EHO) [2] typically exhibits 2 or 3 harmonics of a fundamental frequency near 10 kHz. We find this combination of a core ITB and the QH-mode edge to be extremely robust and to produce slowly varying, high performance discharge parameters, Fig. 1, for long durations {approx} 3 s. These conditions are generally limited by the duration of the NBI system and a slow evolution to lower q values as the Ohmic current moves inward on the resistive time scale for diffusion.

  8. Challenges to Introducing and Managing Disturbance Regimes for Holocarpha macradenia, an

    E-Print Network [OSTI]

    Holl, Karen

    Challenges to Introducing and Managing Disturbance Regimes for Holocarpha macradenia, an Endangered sites to test the effects of clipping frequency and litter accumulation on seed germination, seedling

  9. Climate effects on future runoff regimes of Pacific mountain tributaries

    SciTech Connect (OSTI)

    Rango, A.; Roberts, R. [Agricultural Research Service, Beltsville, MD (United States). Hydrology Lab.; Martinec, J.

    1995-12-31T23:59:59.000Z

    Because most Pacific mountain tributaries are situated in the Northern hemisphere, the runoff regime is characterized by high river flows in April-September and low river flows in October--March. With regard to global warming, a partial shift of inflows into the Pacific Ocean from the summer to the winter has to be expected. For quantitative evaluations, the SRM snowmelt runoff model is applied in several basins in the Pacific rim, ranging from 57{degree} North (west coast of Canada) to 45{degree} South (east coast of New Zealand). In the Kings River basin of California (4,000 km{sup 2}, 171--4,341 m a.s.l.) with the envisaged rise of temperature, runoff in October--March is significantly increased at the expense of snow accumulation in winter and summer runoff. Also, summer runoff peaks are shifted to earlier dates. Similar redistribution of runoff is evaluated for the Illecillewaet River basin of British Columbia (1,155 km{sup 2}, 509--3,150 m a.s.l.), a tributary to the Columbia River. However, an additional effect is observed: because nearly 10% of the surface is covered with permanent snowfields and glaciers, runoff would be temporarily increased from these frozen reserves. A quantitative analysis reveals that in the Illecillewaet basin, even a moderate increase of precipitation would not offset a gradual disappearance of glaciers due to increased melting.

  10. Chapter 4: High-Density Regimes in the FTU

    SciTech Connect (OSTI)

    Frigione, D.; Pieroni, L.; Buratti, P.; Giovannozzi, E.; Romanelli, M.; Esposito, B.; Leigheb, M.; Gabellieri, L. [Associazione EURATOM-ENEA sulla fusione (Italy)

    2004-05-15T23:59:59.000Z

    High-density plasmas (n{sub o} {approx} 8 x 10{sup 20} m{sup -3}) achieving steady improved core-confinement have been obtained in the Frascati Tokamak Upgrade (FTU) up to the maximum nominal toroidal field (8 T) by deep multiple pellet injection. These plasmas exhibit also high purity, efficient electron-ion coupling, and peaked density profiles sustained for several energy confinement times. Neutron yields in excess of 1 x 10{sup 13} n/s are measured, consistent with the reduction of the ion transport to neoclassical levels. Improved performance is associated with sawtooth stabilization that occurs when the pellet penetrates close to the q = 1 surface. In this regime, impurity accumulation can be prevented if a slow sawtooth activity is maintained. Experiments aimed at obtaining radiation-improved modes at high field have also been carried out using neon injection. The observed increase of the average density, with respect to the reference discharge, is significantly larger than the contribution of Ne. The neutron yield increases also by a factor of 3 to 6, and the energy confinement time increases by a factor up to 1.4.

  11. Mechanism for export of sediment-derived iron in an upwelling regime

    E-Print Network [OSTI]

    Mahadevan, Amala

    Mechanism for export of sediment-derived iron in an upwelling regime S. A. Siedlecki,1 A. Mahadevan is exported offshore through this previously unidentified subsurface pathway. If this mechanism operates on all coastal upwelling regimes, the global export of sediment-derived iron to the open ocean would

  12. Calibrated Probabilistic Forecasting at the Stateline Wind Energy Center: The Regime-Switching

    E-Print Network [OSTI]

    Genton, Marc G.

    Calibrated Probabilistic Forecasting at the Stateline Wind Energy Center: The Regime at a wind energy site and fits a conditional predictive model for each regime. Geographically dispersed was applied to 2-hour-ahead forecasts of hourly average wind speed near the Stateline wind energy center

  13. High-Steady-State Advanced Tokamak Regimes for ITER and FIRE D. M. Meade1

    E-Print Network [OSTI]

    FT High- Steady-State Advanced Tokamak Regimes for ITER and FIRE D. M. Meade1 , N. R. Sauthoff1 , C Institute of Technology, Cambridge, MA 02139, USA An attractive tokamak-based fusion power plant will require the development of high- steady- state advanced tokamak regimes to produce a high gain burning

  14. Coulomb Oscillations in Antidots in the Integer and Fractional Quantum Hall Regimes

    E-Print Network [OSTI]

    A. Kou; C. M. Marcus; L. N. Pfeiffer; K. W. West

    2012-01-08T23:59:59.000Z

    We report measurements of resistance oscillations in micron-scale antidots in both the integer and fractional quantum Hall regimes. In the integer regime, we conclude that oscillations are of the Coulomb type from the scaling of magnetic field period with the number of edges bound to the antidot. Based on both gate-voltage and field periods, we find at filling factor {\

  15. Coulomb Oscillations in Antidots in the Integer and Fractional Quantum Hall Regimes

    E-Print Network [OSTI]

    Kou, A; Pfeiffer, L N; West, K W

    2012-01-01T23:59:59.000Z

    We report measurements of resistance oscillations in micron-scale antidots in both the integer and fractional quantum Hall regimes. In the integer regime, we conclude that oscillations are of the Coulomb type from the scaling of magnetic field period with the number of edges bound to the antidot. Based on both gate-voltage and field periods, we find at filling factor {\

  16. Changes in surface water regime and resources in Mongolia Davaa G., Adiyabadam

    E-Print Network [OSTI]

    Changes in surface water regime and resources in Mongolia Davaa G., Adiyabadam Mongolia and the semi-desert area of Central Asia. The river flow regime of Mongolia is highly seasonal with minimum Basin (IDB) of Central Asia. Mean annual river runoff formed in the territory of Mongolia is 30.6 km3

  17. vol. 157, no. 5 the american naturalist may 2001 Disturbance Regimes and Life-History Evolution

    E-Print Network [OSTI]

    -history the- ory. "Disturbance regime" is defined in terms of disturbance timing, frequency, predictability 1988; Turner et al. 1998) have suggested that the frequency of disturbances relative to an organismvol. 157, no. 5 the american naturalist may 2001 Disturbance Regimes and Life-History Evolution

  18. Exact asymptotic expansions for thermodynamics of the hydrogen gas in the Saha regime

    E-Print Network [OSTI]

    Boyer, Edmond

    Exact asymptotic expansions for thermodynamics of the hydrogen gas in the Saha regime A. Alastuey and V. Ballenegger Abstract We consider the hydrogen quantum plasma in the Saha regime, where it almost of thermo- dynamical functions beyond Saha theory, which describes an ideal mixture of ionized protons

  19. Light-matter excitations in the ultra-strong coupling regime Aji A. Anappara,1

    E-Print Network [OSTI]

    -polariton splitting in solid-state sys- tems [2]. This regime is actively investigated in many research fields-field interaction. The energy of the excitations is affected and a new squeezed ground state is defined containingLight-matter excitations in the ultra-strong coupling regime Aji A. Anappara,1 Simone De Liberato,2

  20. Author's personal copy Climate versus human-driven fire regimes in Mediterranean landscapes: the

    E-Print Network [OSTI]

    Gilli, Adrian

    Author's personal copy Climate versus human-driven fire regimes in Mediterranean landscapes¨tstrasse 16, CH-8092 Zu¨rich, Switzerland d Environmental Change Research, Department of Geography, University Lago dell'Accesa in southern Tuscany reveals numerous changes in fire regime over the last 11.6 kyr cal

  1. Geothermal regimes of the Clearlake region, northern California

    SciTech Connect (OSTI)

    Amador, M. [ed.; Burns, K.L.; Potter, R.M.

    1998-06-01T23:59:59.000Z

    The first commercial production of power from geothermal energy, at The Geysers steamfield in northern California in June 1960, was a triumph for the geothermal exploration industry. Before and since, there has been a search for further sources of commercial geothermal power in The Geysers--Clear Lake geothermal area surrounding The Geysers. As with all exploration programs, these were driven by models. The models in this case were of geothermal regimes, that is, the geometric distribution of temperature and permeability at depth, and estimates of the physical conditions in subsurface fluids. Studies in microseismicity and heat flow, did yield geophysical information relevant to active geothermal systems. Studies in stable-element geochemistry found hiatuses or divides at the Stoney Creek Fault and at the Collayomi Fault. In the region between the two faults, early speculation as to the presence of steamfields was disproved from the geochemical data, and the potential existence of hot-water systems was predicted. Studies in isotope geochemistry found the region was characterized by an isotope mixing trend. The combined geochemical data have negative implications for the existence of extensive hydrothermal systems and imply that fluids of deep origin are confined to small, localized systems adjacent to faults that act as conduits. There are also shallow hot-water aquifers. Outside fault-localized systems and hot-water aquifers, the area is an expanse of impermeable rock. The extraction of energy from the impermeable rock will require the development and application of new methods of reservoir creation and heat extraction such as hot dry rock technology.

  2. Controls of Wellbore Flow Regimes on Pump Effluent Composition

    SciTech Connect (OSTI)

    James Martin-Hayden; plummer; Sanford Britt

    2014-01-01T23:59:59.000Z

    Where well water and formation water are compositionally different or heterogeneous, pump effluent composition will vary due to partial mixing and transport induced by pumping. Investigating influences of purging and sampling methodology on composition variability requires quantification of wellbore flow regimes and mixing. As a basis for this quantification, analytical models simulating Poiseuille flow were developed to calculate flow paths and travel times. Finite element modeling was used to incorporate influences of mixing. Parabolic velocity distributions within the screened interval accelerate with cumulative inflow approaching the pump intake while an annulus of inflowing formation water contracts uniformly to displace an axial cylinder of pre-pumping well water as pumping proceeds. Increased dispersive mixing forms a more diffuse formation water annulus and the contribution of formation water to pump effluent increases more rapidly. Models incorporating viscous flow and diffusion scale mixing show that initially pump effluent is predominantly pre-pumping well water and compositions vary most rapidly. After two screen volumes of pumping, 94% of pump effluent is inflowing formation water. Where the composition of formation water and pre-pumping well water are likely to be similar, pump effluent compositions will not vary significantly and may be collected during early purging or with passive sampling. However, where these compositions are expected to be considerably different or heterogeneous, compositions would be most variable during early pumping, that is, when samples are collected during low-flow sampling. Purging of two screen volumes would be required to stabilize the content and collect a sample consisting of 94% formation water.

  3. Large-Scale Structure Formation in the Quasi-linear Regime

    E-Print Network [OSTI]

    F. Bernardeau

    1996-07-02T23:59:59.000Z

    The understanding of the large-scale structure formation requires the resolution of coupled nonlinear equations describing the cosmic density and velocity fields. This is a complicated problem that, for the last decade, has been essentially addressed with N-body simulations. There is however a regime, the so-called quasi-linear regime, for which the relative density fluctuations are on average below unity. It is then possible to apply Perturbation Theory techniques where the perturbation expansions are made with respect to the initial fluctuations. I review here the major results that have been obtained in this regime.

  4. Multimode regimes in quantum cascade lasers: From coherent instabilities to spatial hole burning RID B-8648-2009

    E-Print Network [OSTI]

    Gordon, Ariel; Wang, Christine Y.; Diehl, L.; Kaertner, F. X.; Belyanin, Alexey; Bour, D.; Corzine, S.; Hoefler, G.; Liu, H. C.; Schneider, H.; Maier, T.; Troccoli, M.; Faist, J.; Capasso, Federico

    2008-01-01T23:59:59.000Z

    A theoretical and experimental study of multimode operation regimes in quantum cascade lasers (QCLs) is presented. It is shown that the fast gain recovery of QCLs promotes two multimode regimes: One is spatial hole burning (SHB) and the other one...

  5. Study of JET Soft Housekeeping Waste Volume Reduction by Plasma Arc Centrifuge and Gasification in Countercurrent Regime Methods

    E-Print Network [OSTI]

    Study of JET Soft Housekeeping Waste Volume Reduction by Plasma Arc Centrifuge and Gasification in Countercurrent Regime Methods

  6. Mechanisms of Ignition by Transient Energy Deposition: Regimes of Combustion Waves Propagation

    E-Print Network [OSTI]

    Kiverin, Alexey D; Ivanov, Mikhail F; Liberman, Michael A

    2013-01-01T23:59:59.000Z

    Regimes of chemical reaction wave propagating in reactive gaseous mixtures, whose chemistry is governed by chain-branching kinetics, are studied depending on the characteristics of a transient thermal energy deposition localized in a finite volume of reactive gas. Different regimes of the reaction wave propagation are initiated depending on the amount of deposited thermal energy, power of the source and the size of the hot spot. The main parameters which define regimes of the combustion waves facilitated by the transient deposition of thermal energy are: acoustic timescale, duration of the energy deposition, ignition time scale and size of the hot spot. The interplay between these parameters specifies the role of gasdynamical processes, the formation and steepness of the temperature gradient and speed of the spontaneous wave. The obtained results show how ignition of one or another regime of combustion wave depends on the value of energy, rate of the energy deposition and size of the hot spot, which is import...

  7. Policing Access to Knowledge: An Analysis of the Intellectual Property Prohibition Regime

    E-Print Network [OSTI]

    Logan, Paul Lucas

    2014-12-08T23:59:59.000Z

    This dissertation is an analysis of criminal enforcement of digital copyrights. I argue that an international prohibition regime to govern intellectual property rights (IPR) has emerged through systems of international trade and law enforcement...

  8. ELECTRON BUNCH PROFILE DIAGNOSTICS IN THE FEW FS REGIME USING COHERENT SMITH-PURCELL RADIATION

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ', which is essential for the accurate reconstruction of the temporal bunch profile. INTRODUCTION New bunch length and profiles measurements down to the few fs FWHM regime. Coherent Smith-Purcell (CSP

  9. Vickers microindentation toughness of a sintered SiC in the median-crack regime

    SciTech Connect (OSTI)

    Ghosh, Asish; Kobayashi, A.S. (Washington Univ., Seattle, WA (United States). Coll. of Engineering); Li, Zhuang (Argonne National Lab., IL (United States)); Henager, C.H. Jr. (Pacific Northwest Lab., Richland, WA (United States)); Bradt, R.C. (Nevada Univ., Reno, NV (United States). Mackay School of Mines)

    1991-01-01T23:59:59.000Z

    The Vickers microindentation method for the determination of the fracture toughness of ceramics was investigated in the median crack regime for a sintered alpha SiC. The results are compared with fracture toughness measurements by conventional fracture mechanics technique and also with the reported indentation toughness for the low-load Palmqvist crack regime. Indentation toughnesses in the median crack regime vary widely depending on the choice of the specific equation which is applied. The indentation toughnesses are also load (crack length) dependent. A decreasing R-curve trend results, in contradiction to the flat R-curve that has been observed with conventional fracture mechanics techniques. It is concluded that the Vickers microindentation method is not a reliable technique for the determination of the fracture toughness of ceramics in the median crack regime.

  10. A Study of Frontal-Scale Air-Sea Interaction in Midlatitude Western Boundary Current Regimes 

    E-Print Network [OSTI]

    Ma, Xiaohui

    2014-06-17T23:59:59.000Z

    Frontal-scale air-sea interactions during boreal winter season in midlatitude western boundary current (WBC) regimes, including the Kuroshio Extension Region (KER) and Gulf Stream Region (GSR), are investigated using both observational (reanalysis...

  11. Regime Based Clustering for the Modeling of Two-Dimensional Vector Fields

    E-Print Network [OSTI]

    Nakamura, Mark Hiroshi

    2014-01-01T23:59:59.000Z

    an onshore wind and an offshore wind referred to as Santaand 4.1c represents offshore hot winds created by highlyoffshore Santa Ana regime, we know the source of the wind is

  12. The transition from the annular to the slug flow regime in two-phase flow

    E-Print Network [OSTI]

    Haberstroh, Robert D.

    1964-01-01T23:59:59.000Z

    Experiments were conducted to determine the transition from annular to semiannular flow regimes for two-phase, gas-liquid upflow in vertical tubes. The influencesof liquid flow rate, tube diameter, liquid viscosity, surface ...

  13. Glacier Meltwater Contributions and Glaciometeorological Regime of the Illecillewaet River Basin, British Columbia,

    E-Print Network [OSTI]

    Smith, Dan

    Glacier Meltwater Contributions and Glaciometeorological Regime of the Illecillewaet River Basin This study characterizes the meteorological parameters influencing glacier runoff and quantifies recent glacier contributions to streamflow in the Illecillewaet River basin, British Columbia. The Illecillewaet

  14. Highly optimized tolerance and power laws dense and sparse resource regimes J. Carlson,

    E-Print Network [OSTI]

    Carlson, Jean

    resource regime. agrees well data wildfires, web sizes, electric power outages. However, another HOT model Control Dynamical Systems Electrical Engineering, California Institute Technology, Pasadena, California investigated in context variety specific applications, including Internet #8,9#, electric power #10#, wildfires

  15. Forest Management Regime and Species choice options in a changing environment

    E-Print Network [OSTI]

    Research, Northern Research Station, Roslin, Midlothian, Scotland. EH25 9SY bill.mason@forestry.gsi.gov #12;18 Forest types in NE China; Highest point c. 1050 m #12;Options for forest management regime #12

  16. A comparative study of vibrational relaxation models for the aeroassisted orbital transfer vehicle flight regime

    E-Print Network [OSTI]

    Green, Derek Scott

    1991-01-01T23:59:59.000Z

    A COMPARATIVE STUDY OF VIBRATIONAL RELAXATION MODELS FOR AEROASSISTED ORBITAL TRANSFER VEHICLE FLIGHT REGIME A Thesis by DEREK SCOTI' GREEN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 1991 Major Subject: Aerospace Engineering A COMPARATIVE STUDY OF VIBRATIONAL RELAXATION MODELS FOR AEROASSISTED ORBITAL TRANSFER VEHICLE FLIGHT REGIME A Thesis by DEREK SCOTT GREEN Approved...

  17. Distribution of soil and leaf water potentials of mature grapefruit trees under three soil moisture regimes

    E-Print Network [OSTI]

    Prathapar, Sanmugam Ahembaranathan

    1982-01-01T23:59:59.000Z

    DISTRIBUTION OF SOIL AND LEAF WATER POTENTIALS OF MATURE GRAPEFRUIT TREES UNDER THREE SOIL MOISTURE REGIMES A Thesis by SANMUGAM AHEMBARANATHAN PRATHAPAP, Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE May 1982 Major Subject; Agricultural Engineering DISTRIBUTION OF SOIL AND LEAF WATER POTENTIALS OF MATURE GRAPEFRUIT TREES UNDER THREE SOIL MOISTURE REGIMES A Thesis by SANMUGAM AHEMBARANATHAN PRATHAPAR...

  18. High-energy scattering in the saturation regime including running coupling and rare fluctuation effects

    SciTech Connect (OSTI)

    Xiang Wenchang [Fakultaet fuer Physik, Universitaet Bielefeld, D-33501 Bielefeld (Germany)

    2009-01-01T23:59:59.000Z

    The analytic form of the asymptotic behavior of the S matrix in the saturation regime including the running coupling is obtained. To get this result, we solve the Balitsky and Kovchegov-Weigert evolution equations in the saturation regime, which include running coupling corrections. We study also the effect of rare fluctuations on top of the running coupling. We find that the rare fluctuations are less important in the running coupling case as compared to the fixed coupling case.

  19. High energy scattering in the saturation regime including running coupling and rare fluctuation effects

    E-Print Network [OSTI]

    Wenchang Xiang

    2008-09-16T23:59:59.000Z

    The analytic result for the $S$-matrix in the saturation regime including the running coupling is obtained. To get this result we solve the Balitsky and Kovchegov-Weigert evolution equations in the saturation regime, which include running coupling corrections. We study also the effect of rare fluctuations on top of the running coupling. We find that the rare fluctuations are less important in the running coupling case as compared to the fixed coupling case.

  20. DEPARTMENT OF MATHEMATICS AND STATISTICS Memorial University of Newfoundland St. John's, Newfoundland

    E-Print Network [OSTI]

    Oyet, Alwell

    , especially in the social and medical sciences, may involve human subjects, whereas other experiments@math.mun.ca Lecture Note: Design and Analysis of Experiments I 1. Basic Principles The main objective of conducting any experiment, is usually to discover something about a system or a process. Some experiments

  1. Exploring the Possible Use of Information Barriers for future Biological Weapons Verification Regimes

    SciTech Connect (OSTI)

    Luke, S J

    2011-12-20T23:59:59.000Z

    This report describes a path forward for implementing information barriers in a future generic biological arms-control verification regime. Information barriers have become a staple of discussion in the area of arms control verification approaches for nuclear weapons and components. Information barriers when used with a measurement system allow for the determination that an item has sensitive characteristics without releasing any of the sensitive information. Over the last 15 years the United States (with the Russian Federation) has led on the development of information barriers in the area of the verification of nuclear weapons and nuclear components. The work of the US and the Russian Federation has prompted other states (e.g., UK and Norway) to consider the merits of information barriers for possible verification regimes. In the context of a biological weapons control verification regime, the dual-use nature of the biotechnology will require protection of sensitive information while allowing for the verification of treaty commitments. A major question that has arisen is whether - in a biological weapons verification regime - the presence or absence of a weapon pathogen can be determined without revealing any information about possible sensitive or proprietary information contained in the genetic materials being declared under a verification regime. This study indicates that a verification regime could be constructed using a small number of pathogens that spans the range of known biological weapons agents. Since the number of possible pathogens is small it is possible and prudent to treat these pathogens as analogies to attributes in a nuclear verification regime. This study has determined that there may be some information that needs to be protected in a biological weapons control verification regime. To protect this information, the study concludes that the Lawrence Livermore Microbial Detection Array may be a suitable technology for the detection of the genetic information associated with the various pathogens. In addition, it has been determined that a suitable information barrier could be applied to this technology when the verification regime has been defined. Finally, the report posits a path forward for additional development of information barriers in a biological weapons verification regime. This path forward has shown that a new analysis approach coined as Information Loss Analysis might need to be pursued so that a numerical understanding of how information can be lost in specific measurement systems can be achieved.

  2. A {open_quotes}New{close_quotes} regime for nuclear weapons and materials

    SciTech Connect (OSTI)

    Sutcliffe, W.G.

    1994-02-15T23:59:59.000Z

    In this paper, I discuss the principal ideas that I covered in my presentation on December 8, 1993, at the Future of Foreign Nuclear Materials Symposium held by the Naval Postgraduate School in Monterey, California. I was asked to discuss issues related to military inventories of plutonium, and I took this opportunity to describe a possible declaratory regime that could encompass military as well as civilian inventories of plutonium. The {open_quote}new{close_quotes} in the title does not imply that the regime discussed here is an original idea. Rather, the regime will be {open_quotes}new,{close_quotes} when it is adopted. The regime proposed here and in other works is one in which all stocks of nuclear weapons and materials are declared. Originally, declarations were proposed as a traditional arms control measure. Here, declarations are proposed to support the prevention of misuse of nuclear weapons and materials, including support for the nonproliferation regime. In the following, I discuss: (1) Worldwide inventories of nuclear weapons and materials, including the fact that military plutonium must be viewed as part of that worldwide inventory. (2) Life cycles of nuclear weapons and materials, including the various stages from the creation of nuclear materials for weapons through deployment and retirement of weapons to the final disposition of the materials. (3) Mechanisms for making declarations. (4) Risks and benefits to be derived from declarations. (5) Possibilities for supporting evidence or verification.

  3. Thermodynamics of Mesoscopic Thermoelectric Heat Engine beyond Linear-Response Regime

    E-Print Network [OSTI]

    Kaoru Yamamoto; Naomichi Hatano

    2015-04-22T23:59:59.000Z

    Mesoscopic thermoelectric heat engine is much anticipated as a new device which allows us to utilize wasted heat inaccessible by the conventional heat engine with high efficiency. Most theoretical studies so far, however, have been limited to the linear-response regime; its thermodynamics beyond the regime still remains unclear. In this Letter, we give a clear-cut definition of the heat current of the engine beyond the linear-response regime. It resolves the confusion in the definition of the heat current in the linear-response regime. After verifying its thermodynamic consistency, we find the following two interesting results: the efficiency of the mesoscopic thermoelectric engine reaches the Carnot efficiency if and only if the transmission function is a delta function at a specific energy; the unitarity of the scattering matrix guarantees the second law of thermodynamics, invalidating Benenti et al.'s argument in the linear-response regime that one could obtain a finite power with the Carnot efficiency under broken time-reversal symmetry.

  4. A statistical analysis of avalanching heat transport in stationary enhanced core confinement regimes

    SciTech Connect (OSTI)

    Tokunaga, S.; Jhang, Hogun; Kim, S. S. [WCI Center for Fusion Theory, National Fusion Research Institute, 52, Yeoeun-dong, Yusung-Gu, Daejon (Korea, Republic of); Diamond, P. H. [WCI Center for Fusion Theory, National Fusion Research Institute, 52, Yeoeun-dong, Yusung-Gu, Daejon (Korea, Republic of); Center for Astrophysics and Space Sciences and Department of Physics, University of California San Diego, La Jolla, California 92093-0429 (United States)

    2012-09-15T23:59:59.000Z

    We present a statistical analysis of heat transport in stationary enhanced confinement regimes obtained from flux-driven gyrofluid simulations. The probability density functions of heat flux in improved confinement regimes, characterized by the Nusselt number, show significant deviation from Gaussian, with a markedly fat tail, implying the existence of heat avalanches. Two types of avalanching transport are found to be relevant to stationary states, depending on the degree of turbulence suppression. In the weakly suppressed regime, heat avalanches occur in the form of quasi-periodic (QP) heat pulses. Collisional relaxation of zonal flow is likely to be the origin of these QP heat pulses. This phenomenon is similar to transient limit cycle oscillations observed prior to edge pedestal formation in recent experiments. On the other hand, a spectral analysis of heat flux in the strongly suppressed regime shows the emergence of a 1/f (f is the frequency) band, suggesting the presence of self-organized criticality (SOC)-like episodic heat avalanches. This episodic 1/f heat avalanches have a long temporal correlation and constitute the dominant transport process in this regime.

  5. Plasma wakefields in the quasi-nonlinear regime: Experiments at ATF

    SciTech Connect (OSTI)

    Rosenzweig, J. B.; Andonian, G.; Barber, S.; Ferrario, M.; Muggli, P.; O'Shea, B.; Sakai, Y.; Valloni, A.; Williams, O.; Xi, Y.; Yakimenko, V. [UCLA Dept. of Physics and Astronomy, 405 Hilgard Ave. Los Angeles, CA, 90095 (United States); Accelerator Division, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati , Via E. Fermi 40, Frascati (RM) 00044 (Italy); Max Planck Institute for Physics, Munich (Germany); UCLA Dept. of Physics and Astronomy, 405 Hilgard Ave. Los Angeles, CA, 90095 (United States); Brookhaven National Laboratory, Upton, NY, 11973 (United States)

    2012-12-21T23:59:59.000Z

    In this work we present details of planned experiments to investigate certain aspects of the quasi non linear regime (QNL) of plasma wakefield acceleration (PWFA). In the QNL regime it is, in principal, possible to combine the benefits of both nonlinear and linear PWFA. That is, beams of high quality can be maintained through acceleration due to the complete ejection of plasma electrons from beam occupied region, while large energy gains can be achieved through use of transformer ratio increasing schemes, such as ramped bunch trains. With the addition of an short focal length PMQ triplet capable of focusing beams to the few micron scale and the ability to generate tunable bunch trains, the Accelerator Test Facility (ATF) at Brookhaven National Lab offers the unique capabilities to probe these characteristics of the QNL regime.

  6. Contributions of Electron Cyclotron Waves to Performance in Advanced Regimes on DIII-D

    SciTech Connect (OSTI)

    Petty, C. C.; Burrell, K. H.; DeBoo, J. C.; Ferron, J. R.; Garofalo, A. M.; Hyatt, A. W.; Jackson, G. L.; Lohr, J.; Luce, T. C.; Politzer, P. A.; Prater, R.; Smith, S. P.; Staebler, G. M.; Turnbull, A. D.; Van Zeeland, M. A. [General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States); Austin, M. E. [University of Texas at Austin, Austin, Texas (United States); Brennan, D. P.; Takahashi, R. [University of Tulsa, Tulsa, Oklahoma (United States); Doyle, E. J.; Hillesheim, J. C. [University of California at Los Angeles, Los Angeles, California (United States)

    2011-12-23T23:59:59.000Z

    High-power electron cyclotron (EC) waves are used to increase performance in several Advanced Tokamak (AT) regimes on DIII-D where there is a simultaneous need for high noninductive current and high beta. In the Quiescent High-confinement mode (QH-mode), a direct measurement of the electron cyclotron current drive (ECCD) profile is made using modulation techniques, and a trapped electron mode (TEM) dominated regime with core T{sub e}>T{sub i} is created. In the 'highq{sub min}' AT scenario, ECCD provides part of the off-axis noninductive current and helps to produce a tearing stable equilibrium. In the hybrid regime, strong central current drive from EC waves and other sources increases the noninductive current fraction to {approx_equal}100%. Surprisingly, the core safety factor remains above unity, meaning good alignment between the current drive profile and the desired plasma current profile is not necessary in this scenario.

  7. Simple Scalings for Various Regimes of Electron Acceleration in Surface Plasma Waves

    E-Print Network [OSTI]

    Riconda, C; Vialis, T; Grech, M

    2015-01-01T23:59:59.000Z

    Different electron acceleration regimes in the evanescent field of a surface plasma wave are studied by considering the interaction of a test electron with the high-frequency electromagnetic field of a surface wave. The non-relativistic and relativistic limits are investigated. Simple scalings are found demonstrating the possibility to achieve an efficient conversion of the surface wave field energy into electron kinetic energy. This mechanism of electron acceleration can provide a high-frequency pulsed source of relativistic electrons with a well defined energy. In the relativistic limit, the most energetic electrons are obtained in the so-called electromagnetic regime for surface waves. In this regime the particles are accelerated to velocities larger than the wave phase velocity, mainly in the direction parallel to the plasma-vacuum interface.

  8. Characterization of core impurity transport and accumulation in various operating regimes in DIII-D

    SciTech Connect (OSTI)

    Wade, M.R. [Oak Ridge National Lab., TN (United States); Whyte, D.G. [INRS--Energie et Materiaux, Varennes, Quebec (Canada); Wood, R.D. [Lawrence Livermore National Lab., CA (United States); West, W.P. [General Atomics, San Diego, CA (United States)

    1996-07-01T23:59:59.000Z

    Impurity contaminants in the core plasma of future burning devices such as the International Thermonuclear Experimental Reactor (ITER) are inevitable and will undoubtedly have a deleterious effect on plasma performance. Unfortunately, because of the limited amount of information available, the models presently being used to predict ITER performance simply assume a flat concentration profile for all impurities with an ad hoc concentration chosen for each impurity. In an attempt to start closing the gap between present experimental data and these models, experiments have been conducted on DIII-D with particular emphasis placed on (1) characterizing the buildup of intrinsic impurities in the plasma core in various confinement and divertor regimes; (2) measuring the steady-state impurity density profiles in various operating regimes; and (3) determining whether impurity transport properties are dependent on the charge of the impurity. The primary focus of these studies has been on characterizing impurity buildup in a wide variety of operating conditions in ELMing H-mode plasmas. However, enhanced confinement regimes such as ELM-free H-mode, VH-mode, and the negative central shear (NCS) regime offer the potential of a more attractive reactor scenario. Since the degree of impurity accumulation will have a significant impact on the attractiveness of these regimes, studies have also been conducted to characterize impurity buildup in these regimes. In the present configuration of DIII-D in which graphite tiles cover {approximately} 90% of the plasma facing surface, spectroscopic surveys show carbon to be the dominant impurity with the core carbon concentration typically between 1--3% of the electron density.

  9. Trade balance instability and the optimal exchange rate regime: The case of OPEC countries

    SciTech Connect (OSTI)

    Aljerrah, M.A.

    1993-01-01T23:59:59.000Z

    The OPEC members have experienced wide fluctuations in their trade balances. This can be attributed to several factors: (1) heavy dependence of national income and export earnings on a single primary export-oil; (2) instability of price and world demand for oil; and (3) the exchange rate regime practiced in recent years. An exchange rate policy can be used to minimize the fluctuations in trade balance, given the changes in exchange rates of major international currencies. The purpose of this study is two fold; first, examine the effects of fluctuations in trade balance on the OPEC economies, and second, propose appropriate exchange rate regime for selected OPEC members. The study is divided into two parts. The first part demonstrates the impact of trade balance changes on national income and other macroeconomic variables using a Keynesian framework. The second part involves using conventional trade models to search for the appropriate exchange rate regime to minimize the fluctuations in trade balance of each selective country. The study's findings are: first, fluctuations in trade balances had negative effects on the economics of Algeria, Kuwait, Libya, Saudi Arabia, and the United Arab Emirates. Second, the current exchange rate regime of no sample country is optimal in minimizing trade balance fluctuations. Third, in contrast to expectations, U.S. dollar peg did not stabilize the trade balance of any OPEC member. Finally, the results show that the sample OPEC economies could have enjoyed faster - though with different degree - economic growth if they had pegged their currencies to the derived optimal exchange rate regime. These optimal exchange rate regimes are: the SDR for Algeria and the United Arab Emirates, the purchasing power parity for Libya and Saudi Arabia, and the real Yen for Kuwait.

  10. Infrared thermography of a pulsating heat pipe: Flow regimes and multiple steady states

    E-Print Network [OSTI]

    Khandekar, Sameer

    Infrared thermography of a pulsating heat pipe: Flow regimes and multiple steady states V 400085, India h i g h l i g h t s PHP tested with varying heat powers under vertical orientation. Tube wall and inside fluid temperatures measured in the evaporator. Infrared temperature visualization

  11. Determining the Transpiration Rate of Peach Trees Under Two Trickle Irrigation Regimes

    E-Print Network [OSTI]

    Howell, T. A.; McFarland, M. J.; Reddell, D. L.; Brown, K. W.; Newton, R. J.; Rodriguez, P. B.; Van Bavel, C. H. M.; Reeder, E. L.

    TR- 113 Volume III 1980 Determining the Transportation Rate of Peach Trees Under Two Trickle Irrigation Regimes T.A. Howell M.J. McFarland D.L. Reddell K.W. Brown R.J. Newton P.B. Rodriguez C.H.M. van Bavel E...

  12. Vacuum degeneracy of a circuit-QED system in the ultrastrong coupling regime Pierre Nataf1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    N of artificial atoms, a degeneracy lifting occurs, with an en- ergy splitting dramatically of the proposed system is depicted in Fig. 1, namely a chain of N identical artificial two-level atomsVacuum degeneracy of a circuit-QED system in the ultrastrong coupling regime Pierre Nataf1

  13. Friction experiments with elastography: the slow slip and the super-shear regimes

    E-Print Network [OSTI]

    Boyer, Edmond

    Friction experiments with elastography: the slow slip and the super-shear regimes S. Cathelinea , S technique derived from elastography, is used to follow the dynamic of the interface failure in a friction by Amontons in 1699 [1], the resistance to slip of an interface can be modeled by two main frictional states

  14. Estimating the Mean Response of Treatment Duration Regimes in an Observational Study

    E-Print Network [OSTI]

    Davidian, Marie

    Introduction to Dynamic Treatment Regimes 2 #12;The ESPRIT Infusion Trial Study of the effect of Integrilin Integrilin infusion for 18-24 hours · Outcome: composite endpoint of death, MI, or urgent target on determining a "recommended" treatment duration. Treatment duration decision: · Infusion length ends when

  15. Simulation des plasmas de tokamak avec XTOR : regimes des dents de scie

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Simulation des plasmas de tokamak avec XTOR : r´egimes des dents de scie et ´evolution vers une mod´etique et tokamaks . . . . . . . . . . . . . . . . . . 2 1.3 Mod´elisation multi-mod`eles et codes hybrides'´etablissement des dents de scie en plasmas ohmiques 9 2 La MHD appliqu´ee aux tokamaks : cas des dents de scie 10 2

  16. Study of plasma heating in ohmically and auxiliary heated regimes in spherical tokamak Globus-M.

    E-Print Network [OSTI]

    Boyer, Edmond

    Study of plasma heating in ohmically and auxiliary heated regimes in spherical tokamak Globus-M. N, Russia INTRODUCTION This paper describes the basic features of the plasma heating in spherical tokamak direction in the tokamak midplane. The beam axis was aimed into the inner plasma region at the radius R = 0

  17. Free Energy of a Wormlike Polymer Chain Confined in a Slit: Crossover between Two Scaling Regimes

    E-Print Network [OSTI]

    Sullivan, Donald E.

    Free Energy of a Wormlike Polymer Chain Confined in a Slit: Crossover between Two Scaling Regimes as the later work of de Gennes,4 yielded the well-known scaling behavior of the free energy which is valid in a narrow rectangular tube, Burkhardt has shown that the free energy is the sum of two contributions, each

  18. Energy Efficiency in the Low-SNR Regime under Queueing Constraints and Channel Uncertainty

    E-Print Network [OSTI]

    Gursoy, Mustafa Cenk

    1 Energy Efficiency in the Low-SNR Regime under Queueing Constraints and Channel Uncertainty Deli Qiao, Mustafa Cenk Gursoy, and Senem Velipasalar Abstract Energy efficiency of fixed-rate transmissions probabilities. The optimal fraction of power allocated to training is identified. Energy efficiency

  19. Secure Communication in the Low-SNR Regime: A Characterization of the Energy-Secrecy Tradeoff

    E-Print Network [OSTI]

    Gursoy, Mustafa Cenk

    Secure Communication in the Low-SNR Regime: A Characterization of the Energy-Secrecy Tradeoff required for secure and reliable communications, and the wideband slope. Increased bit energy requirements to security issues, another pivotal concern in most wireless systems is energy-efficient operation especially

  20. Cloud Properties over the North Slope of Alaska: Identifying the Prevailing Meteorological Regimes

    E-Print Network [OSTI]

    . The meteorological categories are established by ap- plying an objective k-means clustering algorithm to 11 years as inputs to the k-means clustering, are found to differ significantly between the regimes and are also well­observation comparison studies. Each category comprises an ensemble of test cases covering a representative range

  1. Warmly Debated: The Little Ice Age and the Construction of Historical Climatic Regimes, 1650-1950

    E-Print Network [OSTI]

    Gilson, Christopher R.

    2011-08-08T23:59:59.000Z

    . The Medieval Warm Period and the Little Ice Age are the two most commonly referenced and discussed of such regimes. This thesis examines the theories and debates that preceded and surrounded the formal definition of the Little Ice Age as an historic period...

  2. The influence of climate regime shift on ENSO Zhengqing Ye and William W. Hsieh

    E-Print Network [OSTI]

    Hsieh, William

    and Ocean Sciences, University of British Columbia Vancouver, B.C. V6T 1Z4, Canada submitted to Climate with their theory. Wang and An (2002) proposed that the changes in the background winds and the correspondingThe influence of climate regime shift on ENSO Zhengqing Ye and William W. Hsieh Dept. of Earth

  3. What is the optimal heather moorland management regime for carbon sequestration?

    E-Print Network [OSTI]

    Guo, Zaoyang

    What is the optimal heather moorland management regime for carbon sequestration? Supervisors: Prof, the Muirburn Code has no evidence base with regard to carbon sequestration. Given the increased concern use moorland carbon sequestration to offset emissions, it is essential that the most appropriate land

  4. Contribution potential of glaciers to water availability in different climate regimes

    E-Print Network [OSTI]

    Marzeion, Ben

    Contribution potential of glaciers to water availability in different climate regimes Georg Kaser availability in river systems under the influence of ongoing global climate change. We estimate the contribution potential of seasonally delayed glacier melt water to total water availability in large river

  5. How kelp produce blade shapes suited to different flow regimes: A new wrinkle

    E-Print Network [OSTI]

    Mahadevan, L.

    How kelp produce blade shapes suited to different flow regimes: A new wrinkle M. A. R. Koehl,1,Ã? W bull kelp, Nereocystis luetkeana, to investigate how these ecomorphological differences are produced, strap-like blades of kelp from habitats with rapid flow collapse into streamlined bundles and flutter

  6. ITW2001, Cairns, Australia, Sept. 2-7, 2001 Fading Channels in the Power Limited Regime

    E-Print Network [OSTI]

    Verdú, Sergio

    - The tradeoff of spectral efficiency vs energy-per information bit (normalized to the noise level ,?&/No-limited region where both spectral efficiency (b/s/Hz) and energy-per-bit are rela- tively low. The informationITW2001, Cairns, Australia, Sept. 2-7, 2001 Fading Channels in the Power Limited Regime Sergio

  7. Two regimes of vortex penetration into platelet-shaped type-II superconductors

    SciTech Connect (OSTI)

    Brandt, E. H. [Max-Planck-Institut fuer Metallforschung (Germany)] [Max-Planck-Institut fuer Metallforschung (Germany); Mikitik, G. P., E-mail: mikitik@ilt.kharkov.ua [Ukrainian Academy of Sciences, Verkin Institute for Low Temperature Physics and Engineering (Ukraine); Zeldov, E. [Weizmann Institute of Science, Department of Condensed Matter Physics (Israel)] [Weizmann Institute of Science, Department of Condensed Matter Physics (Israel)

    2013-09-15T23:59:59.000Z

    Vortex penetration into a thin superconducting strip of a rectangular cross section is considered at an increasing applied magnetic field H{sub a}, taking an interplay between the Bean-Livingston and the geometric barriers in the sample into account. We calculate the magnetic field H{sub p} at which the penetration begins and show that two regimes of vortex penetration are possible. In the first regime, vortices appearing at the corners of the strip at H{sub a} = H{sub p} immediately move to its center, where a vortex dome starts to develop. In the second regime, the penetration occurs in two stages. In the first stage, at H{sub a} < H{sub p}, tilted vortices penetrate into the edge regions of the strip, where novel domes are shown to be formed at the top, bottom, and lateral surfaces. In the second stage, at H{sub a} = H{sub p}, the vortex propagation to the center becomes possible. The difference between the regimes manifests itself in slightly different dependences of the magnetic moment of the strip on H{sub a}.

  8. Electrostatic dynamo in reversed field pinch plasmas: simple common fundamental nature of laminar and turbulent regimes

    SciTech Connect (OSTI)

    Bonfiglio, D.; Cappello, S. [Consorzio RFX, Associazione EURATOM-ENEA sulla fusione, Padova (Italy); Escande, D. F. [Consorzio RFX, Associazione EURATOM-ENEA sulla fusione, Padova (Italy); CNRS-Universite de Provence, Marseille (France)

    2006-11-30T23:59:59.000Z

    Within the framework of magnetohydrodynamic (MHD) numerical modelling, the Reversed Field Pinch (RFP) has been found to develop turbulent or laminar regimes switching from the former to the latter in a continuous way depending on the strength of dissipative forces. The laminar solution corresponds to a simple global helical deformation of the current channel. A helically-modulated electrostatic field arises in order to account for the helical modulation of the current density along magnetic field lines. The associated electrostatic drift yields the main component of the dynamo velocity field. The continuity of the transition between the two regimes suggests that the simple laminar helical solution can provide a fruitful intuitive description of the RFP dynamo in general. In fact, the electrostatic drift remains the main component of the dynamo velocity field in the non-stationary turbulent regime for a sustained RFP. We show that the same dynamo action, due to the electrostatic drift, is provided either by one single mode and its harmonics, as in the laminar regime, or by a rich spectrum of modes with the action of full nonlinear coupling, as in the turbulent one. Here, we review our previous work and present new elements to clarify the physics of the RFP dynamo. Many of the MHD predictions are in good agreement with experimental findings.

  9. Simulation of Heat Exchange Phenomena and Water Regime in Green Roof Substrates

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    187 Simulation of Heat Exchange Phenomena and Water Regime in Green Roof Substrates S. Charpentier UR EPHor Agrocampus-Ouest Centre d'Angers 2, rue Le Nôtre, F49045 Angers France Keywords: green roof roofs increases in Western European and North American cities. It is estimated that 12% of all flat

  10. Historical and Modern Disturbance Regimes, Stand Structures, and Landscape Dynamics in

    E-Print Network [OSTI]

    Swetnam, Thomas W.

    Historical and Modern Disturbance Regimes, Stand Structures, and Landscape Dynamics in Piñon, OR 97331 12 Natural Heritage New Mexico, University of New Mexico, Albuquerque, NM 87131 13 of the variability in historical and modern ecosystem structure and disturbance processes that exists among the many

  11. Remote Femtosecond Laser Induced Breakdown Spectroscopy (LIBS) in a Standoff Detection Regime

    E-Print Network [OSTI]

    Van Stryland, Eric

    Remote Femtosecond Laser Induced Breakdown Spectroscopy (LIBS) in a Standoff Detection Regime C, MD 21005 e Laser Remote Sensing Laboratory, FAMU, 2077 Paul Dirac Dr. Tallahassee, FL, USA 32310 of distances up to and exceeding 80 m utilizing conventional optics.10 As more investigations into the remote

  12. Boundary Behavior of the GinzburgLandau Order Parameter in the Surface Superconductivity Regime

    E-Print Network [OSTI]

    Recanati, Catherine

    Boundary Behavior of the Ginzburg­Landau Order Parameter in the Surface Superconductivity Regime M­Landau theory for a type­II superconductor in an applied magnetic field varying between the second and third of this energy expansion, which allows us to prove the desired uniformity of the surface superconductivity layer

  13. Dynamic Treatment Regimes Min Qian1,, Inbal Nahum-Shani2 and Susan A. Murphy1

    E-Print Network [OSTI]

    Murphy, Susan A.

    to improve patient care the type of treatment and the dosage should vary by patients. Additionally, in many the chapter. Addiction management example: Suppose in planning the treatment for alcohol dependent patients weDynamic Treatment Regimes Min Qian1,, Inbal Nahum-Shani2 and Susan A. Murphy1 1 Department

  14. ANALYTIC MODEL OF HARMONIC GENERATION IN THE LOW-GAIN FEL REGIME

    E-Print Network [OSTI]

    Wurtele, Jonathan

    ANALYTIC MODEL OF HARMONIC GENERATION IN THE LOW-GAIN FEL REGIME G. Penn, M. Reinsch, J.S. Wurtele , LBNL, Berkeley, CA 94720, USA Abstract Harmonic generation using free electron lasers (FELs) requires with simulation results using the FEL code GENESIS, both for single stages of harmonic generation and for the LUX

  15. Ecosystem response to a salmon disturbance regime: Implications for downstream nutrient fluxes in aquatic systems

    E-Print Network [OSTI]

    Northern British Columbia, University of

    Ecosystem response to a salmon disturbance regime: Implications for downstream nutrient fluxes the post-spawn period, downstream biofilm abundance exceeded pre-spawn values, indicating a near short spatial scales acts to retard the flushing of MDNs to downstream rearing lakes. The magnitude

  16. Different generation regimes of mode-locked all-positive-dispersion all-fiber Yb laser

    E-Print Network [OSTI]

    Kobtsev, Sergei M.

    to achieve stable mode-locking and ultra-short pulse generation in an all-positive dispersion cavityDifferent generation regimes of mode-locked all-positive-dispersion all-fiber Yb laser Sergey Kobtseva , Sergey Kukarina , Sergey Smirnova , Sergey Turitsynb , Anton Latkina a Laser system laboratory

  17. Optimal transport of ultracold atoms in the non-adiabatic regime A. Couvert1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    with ultracold atoms by moving slowly optical tweezers [3]. Transport of cold packets of atoms is also transport of cold atoms has been demon- strated using several different configurations. One can move we report the transport of a cold atom cloud in the non-adiabatic regime with a high degree

  18. The Radiative, Cloud, and Thermodynamic Properties of the Major Tropical Western Pacific Cloud Regimes

    E-Print Network [OSTI]

    Jakob, Christian

    's surface. Other effects include the release and consumption of latent heat related to phase changes in the tropical western Pacific (TWP). A cluster analysis is applied to 2 yr of daytime-only data from the International Satellite Cloud Climatology Project (ISCCP) to identify four major cloud regimes in the TWP region

  19. Implications of a Regime-Switching Model on Natural Gas Storage Valuation and Optimal Operation

    E-Print Network [OSTI]

    Forsyth, Peter A.

    Implications of a Regime-Switching Model on Natural Gas Storage Valuation and Optimal Operation-switching model for the risk adjusted natural gas spot price and study the implications of the model on the valuation and optimal operation of natural gas storage facilities. We calibrate the model parameters to both

  20. In situ growth regime characterization of cubic GaN using reflection high energy electron diffraction

    E-Print Network [OSTI]

    As, Donat Josef

    from Knudsen cells. Cubic GaN layers were deposited at 720 °C directly on 3C-SiC substrates shutters the GaN surface was exposed to different Ga fluxes for a certain time. The substrate temperatureIn situ growth regime characterization of cubic GaN using reflection high energy electron

  1. Transport of Ions, DNA Polymers, and Microtubules in the Nanofluidic Regime

    E-Print Network [OSTI]

    Dekker, Cees

    1 CHAPTER 1 Transport of Ions, DNA Polymers, and Microtubules in the Nanofluidic Regime DEREK STEIN at such small dimensions. In the earliest nanofluidics experiments, the pioneering groups of Austin of the polymers, called the radius of gyration, gave rise to strong entropic effects. Nanofluidics is in fact

  2. Spatial and temporal scale issues in determining biomass burning regimes in Bolivia and Peru

    E-Print Network [OSTI]

    Spatial and temporal scale issues in determining biomass burning regimes in Bolivia and Peru A. V and Bolivia to analyse the spatial distribution of burning and its intra- and inter-annual variability Santa Cruz, Bolivia and in north-west Peru). Particular attention was paid to biomass burning in high

  3. The generalization of A. E. Kennelly theory of complex representation of the electrical quantities in sinusoidal periodic regime to the one and three-phase electric quantities in non-sinusoidal periodic regime

    E-Print Network [OSTI]

    Gheorghe Mihai

    2010-02-12T23:59:59.000Z

    In this paper, a new mathematical method of electrical circuits calculus is proposed based on the theory of the complex linear operators in matrix form. The newly proposed method generalizes the theory of complex representation of electrical quantities in sinusoidal periodic regime to the non-sinusoidal periodic regime.

  4. Cavitation regime detection through Proper Orthogonal Decomposition: dynamics analysis of the sheet cavity on a grooved convergent-divergent nozzle

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Cavitation regime detection through Proper Orthogonal Decomposition: dynamics analysis of the sheet in turbines and propellers is responsible for many issues like erosion, noise and vibrations. This two). This method is applied to sequences of sheet cavity images, in order to identify the cavitation regimes (sheet

  5. ARIES Town Meeting on "Edge Plasma Physics and Plasma Material Interactions in the Fusion Power Plant Regime"

    E-Print Network [OSTI]

    Interactions in the Fusion Power Plant Regime. (ARIES Town Meetings are held approximately once every 1-2 years provide an opportunity for increased interactions between researchers in the field and the power plant in order to advance this field toward the power plant regime?, and (3) What contributions can new devices

  6. A model for the self-pulsing regime of microhollow cathode discharges

    SciTech Connect (OSTI)

    Chabert, P.; Lazzaroni, C.; Rousseau, A. [LPP, Ecole Polytechnique, UPMC, CNRS, Paris XI, 91128 Palaiseau (France)

    2010-12-01T23:59:59.000Z

    Microhollow cathode discharges may operate in different regimes depending of the discharge current. They are subject to relaxation oscillations in the so-called self-pulsing regime in which the discharge oscillates between two quasiequilibria: at low current it remains confined in the microhole whereas it expands on the cathode backside during short high-current pulses. A model based on a nonlinear discharge resistance is proposed to describe the phenomenon. The analysis of the dynamics reveals that the current pulse rises in an extremely short time while the characteristic (longer) decay time is imposed by the resistance when the discharge is expanded outside the hole. It is shown how the nonlinear discharge resistance may be inferred from the experimental current-voltage signals.

  7. The water supercooled regime as described by four common water models

    E-Print Network [OSTI]

    Malaspina, David C; Pereyra, Rodolfo G; Szleifer, Igal; Carignano, Marcelo A

    2013-01-01T23:59:59.000Z

    The temperature scale of simple water models in general does not coincide with the natural one. Therefore, in order to make a meaningful evaluation of different water models a temperature rescaling is necessary. In this paper we introduce a rescaling using the melting temperature and the temperature corresponding to the maximum of the heat capacity to evaluate four common water models (TIP4P-Ew, TIP4P-2005, TIP5P-Ew and Six-Sites) in the supercooled regime. Although all the models show the same general qualitative behavior, the TIP5P-Ew appears as the best representation of the supercooled regime when the rescaled temperature is used. We also analyze, using thermodynamic arguments, the critical nucleus size for ice growth. Finally, we speculate on the possible reasons why atomistic models do not usually crystalize while the coarse grained mW model do crystallize.

  8. Numerical-Model Investigation of the Hydrothermal Regime of a Straight-Through Shallow Cooling Pond

    SciTech Connect (OSTI)

    Sokolov, A. S. [JSC 'VNIIG im. B. E. Vedeneeva' (Russian Federation)] [JSC 'VNIIG im. B. E. Vedeneeva' (Russian Federation)

    2013-11-15T23:59:59.000Z

    A mathematic model based on solution of hydrodynamics and heat-transfer equations by the finite-element method is constructed to predict the hydrothermal regime of a straight-through shallow cooling pond, which provides cooling circulating water to a repository of spent nuclear fuel. Numerical experiments made it possible to evaluate the influence exerted by wind conditions and flow rate of water in the river on the temperature of the circulating water.

  9. Rapidly Sheared Compressible Turbulence: Characterization of Different Pressure Regimes and Effect of Thermodynamic Fluctuations

    E-Print Network [OSTI]

    Bertsch, Rebecca Lynne

    2011-10-21T23:59:59.000Z

    RAPIDLY SHEARED COMPRESSIBLE TURBULENCE: CHARACTERIZATION OF DIFFERENT PRESSURE REGIMES AND EFFECT OF THERMODYNAMIC FLUCTUATIONS A Thesis by REBECCA LYNNE BERTSCH Submitted to the O ce of Graduate Studies of Texas A&M University in partial... Thesis by REBECCA LYNNE BERTSCH Submitted to the O ce of Graduate Studies of Texas A&M University in partial ful llment of the requirements for the degree of MASTER OF SCIENCE Approved by: Chair of Committee, Sharath Girimaji Committee Members...

  10. An evolution of adiabatic matter: A case for the quasistatic regime

    E-Print Network [OSTI]

    W. Barreto

    2013-08-01T23:59:59.000Z

    We establish the connection between the standard ADM 3+1 treatment of matter with its characteristic equivalent, in the context of spherical symmetry. The flux-conservative rendition of the fluid equations are obtained. Considering adiabatic distributions of perfect fluid, we evolve the system using the so-called post-quasi-static approximation in radiation coordinates. We obtain an adiabatic matter evolution in the quasi-static regime or slow motion, which is not shear-free nor geodesic.

  11. The transition zone between the oceanic and shelf regimes around Antarctica

    E-Print Network [OSTI]

    Kim, Seong-Joong

    1995-01-01T23:59:59.000Z

    of MASTER OF SCIENCE Approved as to style and content by: Worth D, No in, Jr. (Co-Chair of Committee) Thomas Whitworth 111 (Co-Chair of Committee) Daren B, H. Cline (Member) David A. Brooks (Head of Department) August 1995 Major Subject...: Oceanography ABSTRACT The Transition Zone between the Oceanic and Shelf Regimes around Antarctica. (August 1995) Seong-Joong Kim, B. S. , Chungnam National Universtty Co-Chairs of Advisory Committee: Dr. Worth D. Nowlin, Jr. Dr. Thomas Whitworth 111...

  12. Entanglement of a qubit coupled to a resonator in the adiabatic regime

    SciTech Connect (OSTI)

    Liberti, Giuseppe; Piperno, Franco [Dipartimento di Fisica, Universita della Calabria, 87036 Arcavacata di Rende (Serbia and Montenegro) (Italy); Zaffino, Rosa Letizia; Plastina, Francesco [Dipartimento di Fisica, Universita della Calabria, 87036 Arcavacata di Rende (Serbia and Montenegro) (Italy); INFN-Gruppo collegato di Cosenza, 87036 Arcavacata di Rende (Serbia and Montenegro) (Italy)

    2006-03-15T23:59:59.000Z

    We discuss the ground state entanglement of a bi-partite system, composed by a qubit strongly interacting with an oscillator mode, as a function of the coupling strength, the transition frequency and the level asymmetry of the qubit. This is done in the adiabatic regime in which the time evolution of the qubit is much faster than the oscillator one. Within the adiabatic approximation, we obtain a complete characterization of the ground state properties of the system and of its entanglement content.

  13. Quantum efficiency of single-photon sources in the cavity-QED strong-coupling regime

    E-Print Network [OSTI]

    Guoqiang Cui; M. G. Raymer

    2006-03-21T23:59:59.000Z

    We calculate the integrated-pulse quantum efficiency of single-photon sources in the cavity quantum electrodynamics (QED) strong-coupling regime. An analytical expression for the quantum efficiency is obtained in the Weisskopf-Wigner approximation. Optimal conditions for a high quantum efficiency and a temporally localized photon emission rate are examined. We show the condition under which the earlier result of Law and Kimble [J. Mod. Opt. 44, 2067 (1997)] can be used as the first approximation to our result.

  14. web page: http://w3.pppl.gov/~ zakharov Operational Power Reactor Regime, ignited CTF,

    E-Print Network [OSTI]

    Zakharov, Leonid E.

    ] ­ power in #11;­particles, E pl [GJ] ­ thermal plasma energy, p [MPa] ­ averaged pressure, V [1000 m 3 ] ­ plasma volume. Fusion power is proportional to the plasma pressure P#11; = 0:6(#22; 0 p) 2 V; #22; 0 = 0web page: http://w3.pppl.gov/~ zakharov Operational Power Reactor Regime, ignited CTF, and Lithium

  15. Fukushima plutonium effect and blow-up regimes in neutron-multiplying media

    E-Print Network [OSTI]

    Rusov, V D; Vaschenko, V M; Linnik, E P; Zelentsova, T N; Beglaryan, M E; Chernegenko, S A; Kosenko, S I; Molchinikolov, P A; Smolyar, V P; Grechan, E V

    2012-01-01T23:59:59.000Z

    It is shown that the capture and fission cross-sections of 238U and 239Pu increase with temperature within 1000-3000K range, in contrast to those of 235U, that under certain conditions may lead to the so-called blow-up modes, stimulating the anomalous neutron flux and nuclear fuel temperature growth. Some features of the blow-up regimes in neutron-multiplying media are discussed.

  16. Fukushima plutonium effect and blow-up regimes in neutron-multiplying media

    E-Print Network [OSTI]

    V. D. Rusov; V. A. Tarasov; V. M. Vaschenko; E. P. Linnik; T. N. Zelentsova; M. E. Beglaryan; S. A. Chernegenko; S. I. Kosenko; P. A. Molchinikolov; V. P. Smolyar; E. V. Grechan

    2013-04-28T23:59:59.000Z

    It is shown that the capture and fission cross-sections of 238U and 239Pu increase with temperature within 1000-3000 K range, in contrast to those of 235U, that under certain conditions may lead to the so-called blow-up modes, stimulating the anomalous neutron flux and nuclear fuel temperature growth. Some features of the blow-up regimes in neutron-multiplying media are discussed.

  17. Collisionless kinetic regimes for quasi-stationary axisymmetric accretion disc plasmas

    SciTech Connect (OSTI)

    Cremaschini, C. [International School for Advanced Studies (SISSA) and INFN, Trieste (Italy); Tessarotto, M. [Department of Mathematics and Geosciences, University of Trieste, Trieste (Italy)

    2012-08-15T23:59:59.000Z

    This paper is concerned with the kinetic treatment of quasi-stationary axisymmetric collisionless accretion disc plasmas. The conditions of validity of the kinetic description for non-relativistic magnetized and gravitationally bound plasmas of this type are discussed. A classification of the possible collisionless plasma regimes which can arise in these systems is proposed, which can apply to accretion discs around both stellar-mass compact objects and galactic-center black holes. Two different classifications are determined, which are referred to, respectively, as energy-based and magnetic field-based classifications. Different regimes are pointed out for each plasma species, depending both on the relative magnitudes of kinetic and potential energies and the magnitude of the magnetic field. It is shown that in all cases, there can be quasi-stationary Maxwellian-like solutions of the Vlasov equation. The perturbative approach outlined here permits unique analytical determination of the functional form for the distribution function consistent, in each kinetic regime, with the explicit inclusion of finite Larmor radius-diamagnetic and/or energy-correction effects.

  18. The Cellular Burning Regime in Type Ia Supernova Explosions - I. Flame Propagation into Quiescent Fuel

    E-Print Network [OSTI]

    F. K. Roepke; W. Hillebrandt; J. C. Niemeyer

    2003-12-03T23:59:59.000Z

    We present a numerical investigation of the cellular burning regime in Type Ia supernova explosions. This regime holds at small scales (i.e. below the Gibson scale), which are unresolved in large-scale Type Ia supernova simulations. The fundamental effects that dominate the flame evolution here are the Landau-Darrieus instability and its nonlinear stabilization, leading to a stabilization of the flame in a cellular shape. The flame propagation into quiescent fuel is investigated addressing the dependence of the simulation results on the specific parameters of the numerical setup. Furthermore, we investigate the flame stability at a range of fuel densities. This is directly connected to the questions of active turbulent combustion (a mechanism of flame destabilization and subsequent self-turbulization) and a deflagration-to-detonation transition of the flame. In our simulations we find no substantial destabilization of the flame when propagating into quiescent fuels of densities down to ~10^7 g/cm^3, corroborating fundamental assumptions of large-scale SN Ia explosion models. For these models, however, we suggest an increased lower cutoff for the flame propagation velocity to take the cellular burning regime into account.

  19. Second stable regime of internal kink modes excited by barely passing energetic ions in tokamak plasmas

    SciTech Connect (OSTI)

    He, H. D.; Zheng, G. Y.; Long, Y. X.; He, Z. X.; Jiang, H. B.; Shen, Y.; Wang, L. F. [Southwestern Institute of Physics, Chengdu, Sichuan 610041 (China); Dong, J. Q. [Southwestern Institute of Physics, Chengdu, Sichuan 610041 (China); Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou (China); Fu, G. Y. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States); Sheng, Z. M. [Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou (China)

    2010-08-15T23:59:59.000Z

    The internal kink (fishbone) modes, driven by barely passing energetic ions (EIs), are numerically studied with the spatial distribution of the EIs taking into account. It is found that the modes with frequencies comparable to the toroidal precession frequencies are excited by resonant interaction with the EIs. Positive and negative density gradient dominating cases, corresponding to off- and near-axis depositions of neutral beam injection (NBI), respectively, are analyzed in detail. The most interesting and important feature of the modes is that there exists a second stable regime in higher {beta}{sub h} (=pressure of EIs/toroidal magnetic pressure) range, and the modes may only be excited by the barely passing EIs in a region of {beta}{sub th1}<{beta}{sub h}<{beta}{sub th2} ({beta}{sub th} is threshold or critical beta of EIs). Besides, the unstable modes require minimum density gradients and minimum radial positions of NBI deposition. The physics mechanism for the existence of the second stable regime is discussed. The results may provide a means of reducing or even preventing the loss of NBI energetic ions and increasing the heating efficiency by adjusting the pitch angle and driving the system into the second stable regime fast enough.

  20. The Artist's Resale Royalty Right: Overcoming the Information Problem

    E-Print Network [OSTI]

    Turner, Stephanie B.

    2012-01-01T23:59:59.000Z

    made by a member of Rembrandt's studio, while some partiesthe work was made by Rembrandt himself." Velthuis. supra

  1. Patent Holdup and Royalty Stacking* Mark A. Lemley**

    E-Print Network [OSTI]

    Sadoulet, Elisabeth

    , Rose Hagan, Tim Holbrook, John Hayes, Paul Krieger, Amy Landers, Matt Lynde, David McGowan, Alan for comments on a previous draft. We are also grateful to Jackie Chou for research assistance and data

  2. A retrospective study of ecosystem effects of the 1976/77 regime shift in the eastern Pacific warm pool

    E-Print Network [OSTI]

    Vilchis, L. Ignacio

    2010-01-01T23:59:59.000Z

    T.P. , 2001. On the Pacific Ocean regime shift. Geophysicaltuna in the eastern Pacific Ocean. Inter-Amer. Trop. Tunatuna in the eastern Pacific Ocean. Inter-Amer. Trop. Tuna

  3. Design of an experimental loop for post-LOCA heat transfer regimes in a Gas-cooled Fast Reactor

    E-Print Network [OSTI]

    Cochran, Peter A. (Peter Andrew)

    2005-01-01T23:59:59.000Z

    The goal of this thesis is to design an experimental thermal-hydraulic loop capable of generating accurate, reliable data in various convection heat transfer regimes for use in the formulation of a comprehensive convection ...

  4. Kinematics of Electrons in The Volume of a Planar Vacuum Diode in Regime of Saturation. Parameters of Hysteresis

    E-Print Network [OSTI]

    Dimitar G. Stoyanov

    2014-12-19T23:59:59.000Z

    The kinematics laws of electrons motion in the volume of a planar vacuum diode running in regime of current saturation are used. The characteristics of diode hysteresis in the conditions of S-figurative instability are got and analyzed.

  5. Field effect in the quantum Hall regime of a high mobility graphene wire

    SciTech Connect (OSTI)

    Barraud, C., E-mail: cbarraud@phys.ethz.ch, E-mail: clement.barraud@univ-paris-diderot.fr; Choi, T.; Ihn, T.; Ensslin, K. [Solid State Physics Laboratory, ETH Zürich, CH-8093 Zürich (Switzerland); Butti, P.; Shorubalko, I. [Swiss Federal Laboratories of Materials Science and Technologies, EMPA Elect. Metrol. Reliabil. Lab., CH-8600 Dübendorf (Switzerland); Taniguchi, T.; Watanabe, K. [National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan)

    2014-08-21T23:59:59.000Z

    In graphene-based electronic devices like in transistors, the field effect applied thanks to a gate electrode allows tuning the charge density in the graphene layer and passing continuously from the electron to the hole doped regime across the Dirac point. Homogeneous doping is crucial to understand electrical measurements and for the operation of future graphene-based electronic devices. However, recently theoretical and experimental studies highlighted the role of the electrostatic edge due to fringing electrostatic field lines at the graphene edges [P. Silvestrov and K. Efetov, Phys. Rev. B 77, 155436 (2008); F. T. Vasko and I. V. Zozoulenko, Appl. Phys. Lett. 97, 092115 (2010)]. This effect originates from the particular geometric design of the samples. A direct consequence is a charge accumulation at the graphene edges giving a value for the density, which deviates from the simple picture of a plate capacitor and also varies along the width of the graphene sample. Entering the quantum Hall regime would, in principle, allow probing this accumulation thanks to the extreme sensitivity of this quantum effect to charge density and the charge distribution. Moreover, the presence of an additional and counter-propagating edge channel has been predicted [P. Silvestrov and K. Efetov, Phys. Rev. B 77, 155436 (2008)] giving a fundamental aspect to this technological issue. In this article, we investigate this effect by tuning a high mobility graphene wire into the quantum Hall regime in which charge carriers probe the electrostatic potential at high magnetic field close to the edges. We observe a slight deviation to the linear shift of the quantum Hall plateaus with magnetic field and we study its evolution for different filling factors, which correspond to different probed regions in real space. We discuss the possible origins of this effect including an increase of the charge density towards the edges.

  6. MILLIHERTZ QUASI-PERIODIC OSCILLATIONS AND THERMONUCLEAR BURSTS FROM TERZAN 5: A SHOWCASE OF BURNING REGIMES

    SciTech Connect (OSTI)

    Linares, M.; Chakrabarty, D. [Massachusetts Institute of Technology, Kavli Institute for Astrophysics and Space Research, Cambridge, MA 02139 (United States); Altamirano, D. [Astronomical Institute 'Anton Pannekoek', University of Amsterdam and Center for High-Energy Astrophysics, P.O. BOX 94249, 1090 GE Amsterdam (Netherlands); Cumming, A. [Department of Physics, McGill University, 3600 Rue University, Montreal, QC H3A 2T8 (Canada); Keek, L. [School of Physics and Astronomy, University of Minnesota, 116 Church Street SE, Minneapolis, MN 55455 (United States)

    2012-04-01T23:59:59.000Z

    We present a comprehensive study of the thermonuclear bursts and millihertz quasi-periodic oscillations (mHz QPOs) from the neutron star (NS) transient and 11 Hz X-ray pulsar IGR J17480-2446, located in the globular cluster Terzan 5. The increase in burst rate that we found during its 2010 outburst, when persistent luminosity rose from 0.1 to 0.5 times the Eddington limit, is in qualitative agreement with thermonuclear burning theory yet contrary to all previous observations of thermonuclear bursts. Thermonuclear bursts gradually evolved into a mHz QPO when the accretion rate increased, and vice versa. The mHz QPOs from IGR J17480-2446 resemble those previously observed in other accreting NSs, yet they feature lower frequencies (by a factor {approx}3) and occur when the persistent luminosity is higher (by a factor 4-25). We find four distinct bursting regimes and a steep (close to inverse cubic) decrease of the burst recurrence time with increasing persistent luminosity. We compare these findings to nuclear burning models and find evidence for a transition between the pure helium and mixed hydrogen/helium ignition regimes when the persistent luminosity was about 0.3 times the Eddington limit. We also point out important discrepancies between the observed bursts and theory, which predicts brighter and less frequent bursts, and suggest that an additional source of heat in the NS envelope is required to reconcile the observed and expected burst properties. We discuss the impact of NS magnetic field and spin on the expected nuclear burning regimes, in the context of this particular pulsar.

  7. Flow Regime Study in a High Density Circulating Fluidized Bed Riser with an Abrupt Exit

    SciTech Connect (OSTI)

    Mei, J.S.; Shadle, L.J.; Yue, P.C.; Monazam, E.R. (REM Engineering Services)

    2007-01-01T23:59:59.000Z

    Flow regime study was conducted in a 0.3 m diameter, 15.5 m height circulating fluidized bed (CFB) riser with an abrupt exit at the National Energy Technology Laboratory of the U.S. Department of Energy. Local particle velocities were measured at various radial positions and riser heights using an optical fiber probe. On-line measurement of solid circulating rate was continuously recorded by the Spiral. Glass beads of mean diameter 61 ?m and particle density of 2,500 kg/m3 were used as bed material. The CFB riser was operated at various superficial gas velocities ranging from 3 to 7.6 m/s and solid mass flux from 20 to 550 kg/m2-s. At a constant riser gas velocity, transition from fast fluidization to dense suspension upflow (DSU) regime started at the bottom of the riser with increasing solid flux. Except at comparatively low riser gas velocity and solid flux, the apparent solid holdup at the top exit region was higher than the middle section of the riser. The solid fraction at this top region could be much higher than 7% under high riser gas velocity and solid mass flux. The local particle velocity showed downward flow near the wall at the top of the riser due to its abrupt exit. This abrupt geometry reflected the solids and, therefore, caused solid particles traveling downward along the wall. However, at location below, but near, the top of the riser the local particle velocities were observed flowing upward at the wall. Therefore, DSU was identified in the upper region of the riser with an abrupt exit while the fully developed region, lower in the riser, was still exhibiting core-annular flow structure. Our data were compared with the flow regime boundaries proposed by Kim et al. [1] for distinguishing the dilute pneumatic transport, fast fluidization, and DSU.

  8. Statistical properties of the radiation from SASE FEL operating in a post-saturation regime with and without undulator tapering

    E-Print Network [OSTI]

    Schneidmiller, E A

    2015-01-01T23:59:59.000Z

    We describe statistical and coherence properties of the radiation from x-ray free electron lasers (XFEL) operating in the post-saturation regime. We consider practical case of the SASE3 FEL at the European XFEL. We perform comparison of the main characteristics of the X-ray FEL operating in the post-saturation regime with and without undulator tapering: efficiency, coherence time and degree of transverse coherence.

  9. Flow regime mapping of vertical two-phase downflow in a ribbed annulus

    SciTech Connect (OSTI)

    Kielpinski, A.L.

    1992-12-01T23:59:59.000Z

    Two-phase flow regimes have been mapped for vertical, cocurrent downflow in a narrow annulus which is partially segmented by the presence of longitudinal ribs. This geometry and flow condition has application to the analysis of a Large-Break Loss of Coolant Accident (LB-LOCA) in the production K-Reactor at the Savannah River Site (SRS). The ribbed annular geometry, particularly the presence of non-sealing ribs, gives rise to some unique phenomenological features. The flow behavior is influenced by the partial segmentation of the annulus into four quadrants or subchannels. A random element is induced by the natural bowing of the slender tubes; the width of the azimuthal flow path between two subchannels at a given axial location is indeterminate, and can take on any value between zero and the maximum clearance of 7.6 {times} l0{sup {minus}4} m. When the rib gap is zero at a given location, it is at a maximum 180P away at the same axial location. The range of rib gaps is spanned in a single test section, as it would be also in a reactor assembly. As a result of these effects, flow regime maps obtained by other researchers for downflow in annuli are not accurate for defining flow regimes in a ribbed annulus. Flow regime transitions similar to those noted by, e.g., Bamea, were observed; the locations of these transitions were displaced with respect to the transition equations derived by Bamea. Experimental bubble rise velocity measurements were also obtained in the same test section. The bubble rise velocities were much higher than expected from the theory developed for slug bubbles in tubes, unribbed annuli, and rectangular channels. An elliptical-cap bubble rises faster than a slug bubble of the same area. Large, slug-shaped bubbles injected into the test section were observed to reduce in size as they rose, due to interaction with a longitudinal rib. They thereby adopted a shape more like an elliptical-cap bubble, hence rising faster than the original slug bubble.

  10. Flow regime mapping of vertical two-phase downflow in a ribbed annulus

    SciTech Connect (OSTI)

    Kielpinski, A.L.

    1992-01-01T23:59:59.000Z

    Two-phase flow regimes have been mapped for vertical, cocurrent downflow in a narrow annulus which is partially segmented by the presence of longitudinal ribs. This geometry and flow condition has application to the analysis of a Large-Break Loss of Coolant Accident (LB-LOCA) in the production K-Reactor at the Savannah River Site (SRS). The ribbed annular geometry, particularly the presence of non-sealing ribs, gives rise to some unique phenomenological features. The flow behavior is influenced by the partial segmentation of the annulus into four quadrants or subchannels. A random element is induced by the natural bowing of the slender tubes; the width of the azimuthal flow path between two subchannels at a given axial location is indeterminate, and can take on any value between zero and the maximum clearance of 7.6 [times] l0[sup [minus]4] m. When the rib gap is zero at a given location, it is at a maximum 180P away at the same axial location. The range of rib gaps is spanned in a single test section, as it would be also in a reactor assembly. As a result of these effects, flow regime maps obtained by other researchers for downflow in annuli are not accurate for defining flow regimes in a ribbed annulus. Flow regime transitions similar to those noted by, e.g., Bamea, were observed; the locations of these transitions were displaced with respect to the transition equations derived by Bamea. Experimental bubble rise velocity measurements were also obtained in the same test section. The bubble rise velocities were much higher than expected from the theory developed for slug bubbles in tubes, unribbed annuli, and rectangular channels. An elliptical-cap bubble rises faster than a slug bubble of the same area. Large, slug-shaped bubbles injected into the test section were observed to reduce in size as they rose, due to interaction with a longitudinal rib. They thereby adopted a shape more like an elliptical-cap bubble, hence rising faster than the original slug bubble.

  11. Dynamic regime of conduction in a 1D system with a single impurity

    SciTech Connect (OSTI)

    Shapiro, D. S., E-mail: shapiro@ire.cplire.ru; Artemenko, S. N., E-mail: art@ire.cplire.ru; Remizov, S. V. [Russian Academy of Sciences, Kotel'nikov Institute of Radio Engineering and Electronics (Russian Federation)

    2010-08-15T23:59:59.000Z

    A new regime of electron transport through an impurity in 1D conductors, which resembles the Josephson effect in its manifestations, is predicted. Passage of current through the impurity under voltages above the threshold value is accompanied with generation of ac current oscillations. The temperature below which the effect can be observed, the threshold voltage, and the frequency range are determined by the impurity potential and the strength of electron-electron interaction. The generation line width and the current-voltage characteristics are determined.

  12. Post-Cold War Effects on the Non-proliferation Regime

    SciTech Connect (OSTI)

    Kessler, Carol E.

    2006-03-31T23:59:59.000Z

    This journal article analyzes nuclear and security related events of the past 15 years to illustrate the changes in geopolitics and the shifting balance of power following the collapse of the Soviet Union. Reflection upon these events establishes the context for strengthening the nonproliferation regime. The author concludes that post Soviet communism hastened the movement towards a unipolar system with hegemonic power vested in the United States, and this geopolitical imbalance fostered insecurities and greater threats. Multilateral cooperation and commitment from the US would help this leader achieve its goal of security through increased global confidence in the international system.

  13. Quasi-exact minus-quartic oscillators in strong-core regime

    E-Print Network [OSTI]

    Miloslav Znojil

    2006-05-25T23:59:59.000Z

    PT-symmetric potentials $V({x}) = -{x}^4 +\\j B {x}^3 + C {x}^2+\\j D {x} +\\j F/{x} +G/{x}^2$ are quasi-exactly solvable, i.e., a specific choice of a small $G=G^{(QES)}= integer/4$ is known to lead to wave functions $\\psi^{(QES)}(x)$ in closed form at certain charges $F=F^{(QES)}$ and energies $E=E^{(QES)}$. The existence of an alternative, simpler and non-numerical version of such a construction is announced here in the new dynamical regime of very large $G^{(QES)} \\to \\infty$.

  14. A ffine Regime-Switching Models for Interest Rate Term Structure

    E-Print Network [OSTI]

    Wu, Shu; Zeng, Yong

    2004-01-01T23:59:59.000Z

    shifts is not priced in these models, hence does not contribute independently to bond risk premiums. The purpose of the present paper is to develop a tractable latent factor model that can capture the effects of regime-switching, especially...)/??B(?, st)rt/? , where A(?, s) and B(?, s) are determined by the following differential equations ? ?B(?, s) ?? + a˜1(s)B(?, s) + 1 2 ?1(s)B 2(?, s) + ? E [ e?sA(?sB + h˜1(z))? h˜1(z) ] eh˜0(z)1(s = i)#15;z(dz) = 1 (3.2) and ? ?A(?, s) ?? + a˜0(s)B(?, s) + 1...

  15. A Universal Model for Nanoporous Carbon Supercapacitors Applicable to Diverse Pore Regimes, Carbons, and Electrolyte

    SciTech Connect (OSTI)

    Sumpter, Bobby G [ORNL; Huang, Jingsong [ORNL; Meunier, Vincent [ORNL

    2008-01-01T23:59:59.000Z

    Supercapacitors, commonly called electric double-layer capacitors (EDLCs), are emerging as a novel type of energy storage device with the potential to substitute batteries in applications requiring high power densities. In response to the latest experimental breakthrough in nanoporous carbon supercapacitors, we propose a heuristic theoretical model that takes pore curvature into account as a replacement for the EDLC model which is based on a traditional parallel-plate capacitor. When the pore size is in the mesopore regime (2-50 nm), counterions enter mesoporous carbons and approach the pore wall to form an electric double-cylinder capacitor (EDCC); in the micropore regime (< 2 nm), solvated/desolvated counterions line up along the pore axis to form an electric wire-in-cylinder capacitor (EWCC). In the macropore regime (> 50 nm) where pores are large enough so that the pore curvature is no longer significant, the EDCC model can be reduced naturally to the EDLC model. We present density functional theory calculations and detailed analyses of available experimental data in various pore regimes, showing the significant effects of pore curvature on the supercapacitor properties of nanoporous carbons. It is shown that the EDCC/EWCC model is universal to carbon supercapacitors with diverse carbon materials including activated carbons, template carbons, and novel carbide-derived carbons, and with diverse electrolytes including organic electrolytes such as tetraethylammonium tetrafluoroborate (TEABF4), tetraethylammonium methyl-sulfonate (TEAMS) in acetonitrile, aqueous H2SO4 and KOH electrolytes, and even ionic liquid electrolyte such as 1-ethyl-3-methylimmidazolium bis(trifluromethane-sulfonyl)imide (EMI-TFSI). The EDCC/EWCC model allows the supercapacitor properties to be correlated with pore size, specific surface area, Debye length, electrolyte concentration and dielectric constant, and solute ion size, and may lend a support for the systematic optimization of the properties of carbon supercapacitors via experiments. On the basis of the insight obtained from the new model, we also discuss the effects of the kinetic solvation/desolvation process, multimodal (versus unimodal) pore size distribution, and exohedral (versus endohedral) capacitors on the electrochemical properties of supercapacitors.

  16. Warm-Intermediate Inflationary Universe Model with Viscous Pressure in High Dissipative Regime

    E-Print Network [OSTI]

    M. R. Setare; V. Kamali

    2014-03-02T23:59:59.000Z

    Warm inflation model with bulk viscous pressure in the context of "intermediate inflation" where the cosmological scale factor expands as $a(t)=a_0\\exp(At^f)$, is studied. The characteristics of this model in slow-roll approximation and in high dissipative regime are presented in two cases: 1- Dissipative parameter $\\Gamma$ as a function of scalar field $\\phi$ and bulk viscous coefficient $\\zeta$ as a function of energy density $\\rho$. 2- $\\Gamma$ and $\\zeta$ are constant parameters. Scalar, tensor perturbations and spectral indices for this scenario are obtained. The cosmological parameters appearing in the present model are constrained by recent observational data (WMAP7).

  17. Warm-Intermediate Inflationary Universe Model with Viscous Pressure in High Dissipative Regime

    E-Print Network [OSTI]

    Setare, M R

    2014-01-01T23:59:59.000Z

    Warm inflation model with bulk viscous pressure in the context of "intermediate inflation" where the cosmological scale factor expands as $a(t)=a_0\\exp(At^f)$, is studied. The characteristics of this model in slow-roll approximation and in high dissipative regime are presented in two cases: 1- Dissipative parameter $\\Gamma$ as a function of scalar field $\\phi$ and bulk viscous coefficient $\\zeta$ as a function of energy density $\\rho$. 2- $\\Gamma$ and $\\zeta$ are constant parameters. Scalar, tensor perturbations and spectral indices for this scenario are obtained. The cosmological parameters appearing in the present model are constrained by recent observational data (WMAP7).

  18. Exotic Magnetic Order in the Orbital-Selective Mott Regime of Multiorbital Systems

    SciTech Connect (OSTI)

    Rincon, Julian [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Moreo, Adriana [ORNL] [ORNL; Alvarez, Gonzalo [ORNL] [ORNL; Dagotto, Elbio R [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    The orbital-selective Mott phase of multiorbital Hubbard models has been extensively analyzed before using static and dynamical mean-field approximations. In parallel, the properties of block states (antiferromagnetically coupled ferromagnetic spin clusters) in Fe-based superconductors have also been much discussed. The present effort uses numerically exact techniques in one-dimensional systems to report the observation of block states within the orbital-selective Mott phase regime, connecting two seemingly independent areas of research, and providing analogies with the physics of double-exchange models.

  19. Random matrix theory for mixed regular-chaotic dynamics in the super-extensive regime

    SciTech Connect (OSTI)

    El-Hady, A. Abd [Department of Physics, King Khalid University, Abha (Saudi Arabia); Department of Physics, Zagazig University, Zagazig (Egypt); Abul-Magd, A. Y. [Department of Mathematics, Zagazig University, Zagazig (Egypt); Faculty of Engineering Sciences, Sinai University, El-Arish (Egypt)

    2011-10-27T23:59:59.000Z

    We apply Tsallis's q-indexed nonextensive entropy to formulate a random matrix theory (RMT), which may be suitable for systems with mixed regular-chaotic dynamics. We consider the super-extensive regime of q<1. We obtain analytical expressions for the level-spacing distributions, which are strictly valid for 2 X2 random-matrix ensembles, as usually done in the standard RMT. We compare the results with spacing distributions, numerically calculated for random matrix ensembles describing a harmonic oscillator perturbed by Gaussian orthogonal and unitary ensembles.

  20. Dimension reduction for anisotropic Bose-Einstein condensates in the strong interaction regime

    E-Print Network [OSTI]

    Weizhu Bao; Loic Le Treust; Florian Mehats

    2014-03-12T23:59:59.000Z

    We study the problem of dimension reduction for the three dimensional Gross-Pitaevskii equation (GPE) describing a Bose-Einstein condensate confined in a strongly anisotropic harmonic trap. Since the gas is assumed to be in a strong interaction regime, we have to analyze two combined singular limits: a semi-classical limit in the transport direction and the strong partial confinement limit in the transversal direction. We prove that both limits commute together and we provide convergence rates. The by-products of this work are approximated models in reduced dimension for the GPE, with a priori estimates of the approximation errors.

  1. Lyapunov method and analysis of the emerging repetitively pulsed regime in semiconductor lasers with delayed feedback

    SciTech Connect (OSTI)

    Napartovich, A P; Sukharev, Aleksandr G [State Research Center of Russian Federation 'Troitsk Institute for Innovation and Fusion Research', Troitsk, Moscow Region (Russian Federation)

    2011-03-31T23:59:59.000Z

    We study the nature of transition from stationary lasing to pulse-periodic oscillations when the phase of the delayed feedback and the diode laser pump current change. The appearance of oscillations can take place under the scenarios of soft or hard excitation of oscillations. We propose a semi-analytical approach to identify the nature of the transition and to determine the dynamic characteristics and stability of the arising spike regime with a change in the external parameters. Direct integration of the Lang - Kobayashi equations showed an acceptable accuracy of this approach. (control of laser radiation parameters)

  2. Technology diffusion of a different nature: Applications of nuclear safeguards technology to the chemical weapons verification regime

    SciTech Connect (OSTI)

    Kadner, S.P. [Aquila Technologies Group, Inc., Albuquerque, NM (United States); Reisman, A. [Brookhaven National Lab., Upton, NY (United States); Turpen, E. [Aquila Technologies Group, Inc., Cambridge, MA (United States)

    1996-10-01T23:59:59.000Z

    The following discussion focuses on the issue of arms control implementation from the standpoint of technology and technical assistance. Not only are the procedures and techniques for safeguarding nuclear materials undergoing substantial changes, but the implementation of the Chemical Weapons Convention (CWC) and the Biological Weapons Convention (BWC) will give rise to technical difficulties unprecedented in the implementation of arms control verification. Although these regimes present new challenges, an analysis of the similarities between the nuclear and chemical weapons non-proliferation verification regimes illustrates the overlap in technological solutions. Just as cost-effective and efficient technologies can solve the problems faced by the nuclear safeguards community, these same technologies offer solutions for the CWC safeguards regime. With this in mind, experts at the Organization for the Prohibition of Chemical Weapons (OPCW), who are responsible for verification implementation, need to devise a CWC verification protocol that considers the technology already available. The functional similarity of IAEA and the OPCW, in conjunction with the technical necessities of both verification regimes, should receive attention with respect to the establishment of a technical assistance program. Lastly, the advanced status of the nuclear and chemical regime vis-a-vis the biological non-proliferation regime can inform our approach to implementation of confidence building measures for biological weapons.

  3. Continental Scientific Drilling (CSD): Technology Barriers to Deep Drilling Studies in Thermal Regimes

    SciTech Connect (OSTI)

    Kolstad, George A.; Rowley, John C.

    1987-01-16T23:59:59.000Z

    This report is the proceedings of a workshop. The primary thrust of these discussion was to identify the major key technology barriers to the Department of Energy (DOE) supported Thermal Regimes CSD projects and to set priorities for research and development. The major technological challenge is the high temperature to be encountered at depth. Specific problems derived from this issue were widely recognized among the participants and are reflected in this summary. A major concern for the projected Thermal Regimes CSD boreholes was the technology required for continuous coring, in contrast to that required for drilling without core or spot coring. Current commercial technology bases for these two techniques are quite different. The DOE has successfully fielded projects that used both technologies, i.e, shallow continuous coring (Inyo Domes and Valles Caldera) and deeper drilling with spot cores (Imperial Valley-SSSDP). It was concluded that future scientific objectives may still require both approaches, but continuous coring is the most likely requirement in the near term. (DJE-2005)

  4. PROGRESS IN QUANTIFYING THE EDGE PHYSICS OF H-MODE REGIME IN DIII-D

    SciTech Connect (OSTI)

    R.J. GROEBNER; D.R. BAKER; J.A. BOEDO; K.H. BURRELL; T.N. CARLSTROM; R.D. DERANIAN; E.J. DOYLE; J.R. FERRON; P. GOHIL; G.R. MOYER; C.L. RETTIG; T.L. RHODES; D.M. THOMAS; T.H. OSBORNE; W.P. WEST

    2000-10-01T23:59:59.000Z

    Edge conditions in DIII-D are being quantified in order to provide insight into the physics of the H-mode regime. Electron temperature is not the key parameter that controls the L-H transition. Gradients of edge temperature and pressure are much more promising candidates for such parameters. The quality of H-mode confinement is strongly correlated with the height of the H-mode pedestal for the pressure. The gradient of the pressure appears to be controlled by MHD modes, in particular by kink-ballooning modes with finite mode number n. For a wide variety of discharges, the width of the barrier is well described with a relationship that is proportional to ({beta}{sub p}{sup ped}){sup 1/2}. An attractive regime of confinement has been discovered which provides steady-state operation with no ELMs, low impurity content and normal H-mode confinement. A coherent edge MHD-mode evidently provides adequate particle transport to control the plasma density and impurity content while permitting the pressure pedestal to remain almost identical to that observed in ELMing discharges.

  5. State Transfer Between a Mechanical Oscillator and Microwave Fields in the Quantum Regime

    E-Print Network [OSTI]

    T. A. Palomaki; J. W. Harlow; J. D. Teufel; R. W. Simmonds; K. W. Lehnert

    2012-06-25T23:59:59.000Z

    Recently, macroscopic mechanical oscillators have been coaxed into a regime of quantum behavior, by direct refrigeration [1] or a combination of refrigeration and laser-like cooling [2, 3]. This exciting result has encouraged notions that mechanical oscillators may perform useful functions in the processing of quantum information with superconducting circuits [1, 4-7], either by serving as a quantum memory for the ephemeral state of a microwave field or by providing a quantum interface between otherwise incompatible systems [8, 9]. As yet, the transfer of an itinerant state or propagating mode of a microwave field to and from a mechanical oscillator has not been demonstrated owing to the inability to agilely turn on and off the interaction between microwave electricity and mechanical motion. Here we demonstrate that the state of an itinerant microwave field can be coherently transferred into, stored in, and retrieved from a mechanical oscillator with amplitudes at the single quanta level. Crucially, the time to capture and to retrieve the microwave state is shorter than the quantum state lifetime of the mechanical oscillator. In this quantum regime, the mechanical oscillator can both store and transduce quantum information.

  6. On the transport coefficients of hydrogen in the inertial confinement fusion regime

    SciTech Connect (OSTI)

    Lambert, Flavien; Recoules, Vanina; Decoster, Alain; Clerouin, Jean [CEA, DAM, DIF, F-91297 Arpajon (France); Desjarlais, Michael [Pulsed Power Sciences Center, Sandia National Laboratory, Albuquerque, New Mexico 87185 (United States)

    2011-05-15T23:59:59.000Z

    Ab initio molecular dynamics is used to compute the thermal and electrical conductivities of hydrogen from 10 to 160 g cm{sup -3} and temperatures up to 800 eV, i.e., thermodynamical conditions relevant to inertial confinement fusion (ICF). The ionic structure is obtained using molecular dynamics simulations based on an orbital-free treatment for the electrons. The transport properties were computed using ab initio simulations in the DFT/LDA approximation. The thermal and electrical conductivities are evaluated using Kubo-Greenwood formulation. Particular attention is paid to the convergence of electronic transport properties with respect to the number of bands and atoms. These calculations are then used to check various analytical models (Hubbard's, Lee-More's and Ichimaru's) widely used in hydrodynamics simulations of ICF capsule implosions. The Lorenz number, which is the ratio between thermal and electrical conductivities, is also computed and compared to the well-known Wiedemann-Franz law in different regimes ranging from the highly degenerate to the kinetic one. This allows us to deduce electrical conductivity from thermal conductivity for analytical model. We find that the coupling of Hubbard and Spitzer models gives a correct description of the behavior of electrical and thermal conductivities in the whole thermodynamic regime.

  7. Viscosity and mutual diffusion of deuterium-tritium mixtures in the warm-dense-matter regime

    SciTech Connect (OSTI)

    Kress, J. D.; Cohen, James S.; Horner, D. A.; Collins, L. A. [Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Lambert, F. [CEA, DAM, DIF, F-91297 Arpajon (France)

    2010-09-15T23:59:59.000Z

    We have calculated viscosity and mutual diffusion of deuterium-tritium (DT) in the warm, dense matter regime for densities from 5 to 20 g/cm{sup 3} and temperatures from 2 to 10 eV, using both finite-temperature Kohn-Sham density-functional theory molecular dynamics (QMD) and orbital-free molecular dynamics (OFMD). The OFMD simulations are in generally good agreement with the benchmark QMD results, and we conclude that the simpler OFMD method can be used with confidence in this regime. For low temperatures (3 eV and below), one-component plasma (OCP) model simulations for diffusion agree with the QMD and OFMD calculations, but deviate by 30% at 10 eV. In comparison with the QMD and OFMD results, the OCP viscosities are not as good as for diffusion, especially for 5 g/cm{sup 3} where the temperature dependence is significantly different. The QMD and OFMD reduced diffusion and viscosity coefficients are found to depend largely, though not completely, only on the Coulomb coupling parameter {Gamma}, with a minimum in the reduced viscosity at {Gamma}{approx_equal}25, approximately the same position found in the OCP simulations. The QMD and OFMD equations of state (pressure) are also compared with the hydrogen two-component plasma model.

  8. Transformation properties and general relativity regime in scalar-tensor theories

    E-Print Network [OSTI]

    Laur Jarv; Piret Kuusk; Margus Saal; Ott Vilson

    2015-04-10T23:59:59.000Z

    We consider first generation scalar-tensor theories of gravitation in a completely generic form, keeping the transformation functions of the local rescaling of the metric and the scalar field redefinition explicitly distinct from the coupling functions in the action. It is well known that in the Jordan frame Brans-Dicke type parametrization the diverging kinetic coupling function $\\omega \\rightarrow \\infty$ can lead to the general relativity regime, however then the transformation functions to other parametrizations typically become singular, possibly spoiling the correspondence between different parametrizations. We give a detailed analysis of the transformation properties of the field equations with arbitrary metric and also in the Friedmann cosmology, and provide sufficient conditions under which the correspondence between different parametrizations is retained, even if the transformation is singular. It is interesting to witness the invariance of the notion of the general relativity regime and the correspondence of the perturbed cosmological equations as well as their solutions in different parametrizations, despite the fact that in some cases the perturbed equation turns out to be linear in one parametrization and nonlinear in some other.

  9. Direct X-B mode conversion for high-? national spherical torus experiment in nonlinear regime

    SciTech Connect (OSTI)

    Ali Asgarian, M., E-mail: maliasgarian@ph.iut.ac.ir, E-mail: maa@msu.edu [Physics Department, Isfahan University of Technology, Isfahan 84156 (Iran, Islamic Republic of); Department of Electrical and Computer Engineering, Michigan State University, Michigan 48824-1226 (United States); Parvazian, A.; Abbasi, M. [Physics Department, Isfahan University of Technology, Isfahan 84156 (Iran, Islamic Republic of); Verboncoeur, J. P. [Department of Electrical and Computer Engineering, Michigan State University, Michigan 48824-1226 (United States)

    2014-09-15T23:59:59.000Z

    Electron Bernstein wave (EBW) can be effective for heating and driving currents in spherical tokamak plasmas. Power can be coupled to EBW via mode conversion of the extraordinary (X) mode wave. The most common and successful approach to study the conditions for optimized mode conversion to EBW was evaluated analytically and numerically using a cold plasma model and an approximate kinetic model. The major drawback in using radio frequency waves was the lack of continuous wave sources at very high frequencies (above the electron plasma frequency), which has been addressed. A future milestone is to approach high power regime, where the nonlinear effects become significant, exceeding the limits of validity for present linear theory. Therefore, one appropriate tool would be particle in cell (PIC) simulation. The PIC method retains most of the nonlinear physics without approximations. In this work, we study the direct X-B mode conversion process stages using PIC method for incident wave frequency f{sub 0}?=?15?GHz, and maximum amplitude E{sub 0}?=?10{sup 5?}V/m in the national spherical torus experiment (NSTX). The modelling shows a considerable reduction in X-B mode conversion efficiency, C{sub modelling}?=?0.43, due to the presence of nonlinearities. Comparison of system properties to the linear state reveals predominant nonlinear effects; EBW wavelength and group velocity in comparison with linear regime exhibit an increment around ?36% and 17%, respectively.

  10. Dynamics of entanglement between two harmonic modes in stable and unstable regimes

    E-Print Network [OSTI]

    L. Rebón; N. Canosa; R. Rossignoli

    2014-04-17T23:59:59.000Z

    The exact dynamics of the entanglement between two harmonic modes generated by an angular momentum coupling is examined. Such system arises when considering a particle in a rotating anisotropic harmonic trap or a charged particle in a fixed harmonic potential in a magnetic field, and exhibits a rich dynamical structure, with stable, unstable and critical regimes according to the values of the rotational frequency or field and trap parameters. Consequently, it is shown that the entanglement generated from an initially separable gaussian state can exhibit quite distinct evolutions, ranging from quasiperiodic behavior in stable sectors to different types of unbounded increase in critical and unstable regions. The latter lead respectively to a logarithmic and linear growth of the entanglement entropy with time. It is also shown that entanglement can be controlled by tuning the frequency, such that it can be increased, kept constant or returned to a vanishing value just with stepwise frequency variations. Exact asymptotic expressions for the entanglement entropy in the different dynamical regimes are provided.

  11. On the applicability of the level set method beyond the flamelet regime in thermonuclear supernova simulations

    E-Print Network [OSTI]

    W. Schmidt

    2007-01-15T23:59:59.000Z

    In thermonuclear supernovae, intermediate mass elements are mostly produced by distributed burning provided that a deflagration to detonation transition does not set in. Apart from the two-dimensional study by Roepke & Hillebrandt (2005), very little attention has been payed so far to the correct treatment of this burning regime in numerical simulations. In this article, the physics of distributed burning is reviewed from the literature on terrestrial combustion and differences which arise from the very small Prandtl numbers encountered in degenerate matter are pointed out. Then it is shown that the level set method continues to be applicable beyond the flamelet regime as long as the width of the flame brush does not become smaller than the numerical cutoff length. Implementing this constraint with a simple parameterisation of the effect of turbulence onto the energy generation rate, the production of intermediate mass elements increases substantially compared to previous simulations, in which the burning process was stopped once the mass density dropped below 10^7 g/cm^3. Although these results depend on the chosen numerical resolution, an improvement of the constraints on the the total mass of burning products in the pure deflagration scenario can be achieved.

  12. Optimization of the Combined Proton Acceleration Regime with a Target Composition Scheme

    E-Print Network [OSTI]

    Yao, W P; Zheng, C Y; Liu, Z J; Yan, X Q

    2015-01-01T23:59:59.000Z

    A target composition scheme to optimize the combined proton acceleration regime is presented and verified by two-dimensional particle-in-cell (2D PIC) simulations by using an ultra-intense circularly-polarized (CP) laser pulse irradiating an overdense hydrocarbon (CH) target, instead of a pure hydrogen (H) one. The combined acceleration regime is a two-stage proton acceleration scheme combining the radiation pressure dominated acceleration (RPDA) stage and the laser wakefield acceleration (LWFA) stage sequentially together. With an ultra-intense CP laser pulse irradiating an overdense CH target, followed by an underdense tritium plasma gas, protons with higher energies (from about $20$ GeV up to about $30$ GeV) and lower energy spreads (from about $18\\%$ down to about $5\\%$ in full-width at half-maximum, or FWHM) are generated, as compared to the use of a pure H target. It is because protons can be more stably pre-accelerated in the first RPDA stage when using CH targets. With the increase of the carbon-to-hy...

  13. Comparative study of selected Brazilian and Nigerian policies to promote the transfer and development of technology: the role of regime and non-regime factors, and some results from the automobile industry, 1967-80

    SciTech Connect (OSTI)

    Gusau, B.H.

    1985-01-01T23:59:59.000Z

    This study is concerned with the policies adopted by Brazil and Nigeria to promote the transfer and development of technology in industry. The objectives are two-fold: (1) to compare and analyze the policies with respect to the automobile industries in the 1967-1980 period; (2) to investigate whether their adoption was solely a function of the different ideological values and issue levels of economic development of the countries, or whether the regimes are solely an expression of the patterns of that development. The study adopted the Comparative Public Policy approach to explore the various hypotheses formulated. The findings showed that Brazil realized more significant results than Nigeria in technology development, while in other areas, such as the curtailment of imports, employment generation, etc., the results are mixed. The study concludes that both regime and industrial development factors influence the variation in the policies, although the regime factor seems to explain more of the variation.

  14. Electron Bunch Profile Reconstruction in the Few fs Regime using Coherent Smith-Purcell Radiation

    SciTech Connect (OSTI)

    Bartolini, R.; /Oxford U., JAI /Diamond Light Source /SLAC; Clarke, C.; /SLAC; Delerue, N; /Oxford U., JAI /Diamond Light Source /SLAC; Doucas, G; Reichold, A; /Oxford U., JAI

    2012-06-20T23:59:59.000Z

    Advanced accelerators for fourth generation light sources based on high brightness linacs or laser-driven wakefield accelerators will operate with intense, highly relativistic electron bunches that are only a few fs long. Diagnostic techniques for the determination of temporal profile of such bunches are required to be non invasive, single shot, economic and with the required resolution in the fs regime. The use of a radiative process such as coherent Smith-Purcell radiation (SPR), is particularly promising with this respect. In this technique the beam is made to radiate a small amount of electromagnetic radiation and the temporal profile is reconstructed from the measured spectral distribution of the radiation. We summarise the advantages of SPR and present the design parameters and preliminary results of the experiments at the FACET facility at SLAC. We also discuss a new approach to the problem of the recovery of the 'missing phase', which is essential for the accurate reconstruction of the temporal bunch profile.

  15. Operating Spin Echo in the Quantum Regime for an Atomic-Ensemble Quantum Memory

    E-Print Network [OSTI]

    Rui, Jun; Yang, Sheng-Jun; Zhao, Bo; Bao, Xiao-Hui; Pan, Jian-Wei

    2015-01-01T23:59:59.000Z

    Spin echo is a powerful technique to extend atomic or nuclear coherence time by overcoming the dephasing due to inhomogeneous broadening. However, applying this technique to an ensemble-based quantum memory at single-quanta level remains challenging. In our experimental study we find that noise due to imperfection of the rephasing pulses is highly directional. By properly arranging the beam directions and optimizing the pulse fidelities, we have successfully managed to operate the spin echo technique in the quantum regime and observed nonclassical photon-photon correlations. In comparison to the case without applying the rephasing pulses, quantum memory lifetime is extended by 5 folds. Our work for the first time demonstrates the feasibility of harnessing the spin echo technique to extend lifetime of ensemble-based quantum memories at single-quanta level.

  16. Operating Spin Echo in the Quantum Regime for an Atomic-Ensemble Quantum Memory

    E-Print Network [OSTI]

    Jun Rui; Yan Jiang; Sheng-Jun Yang; Bo Zhao; Xiao-Hui Bao; Jian-Wei Pan

    2015-01-26T23:59:59.000Z

    Spin echo is a powerful technique to extend atomic or nuclear coherence time by overcoming the dephasing due to inhomogeneous broadening. However, applying this technique to an ensemble-based quantum memory at single-quanta level remains challenging. In our experimental study we find that noise due to imperfection of the rephasing pulses is highly directional. By properly arranging the beam directions and optimizing the pulse fidelities, we have successfully managed to operate the spin echo technique in the quantum regime and observed nonclassical photon-photon correlations. In comparison to the case without applying the rephasing pulses, quantum memory lifetime is extended by 5 folds. Our work for the first time demonstrates the feasibility of harnessing the spin echo technique to extend lifetime of ensemble-based quantum memories at single-quanta level.

  17. Complex modes and new amplification regimes in periodic multi transmission lines interacting with an electron beam

    E-Print Network [OSTI]

    Othman, Mohamed; Capolino, Filippo

    2014-01-01T23:59:59.000Z

    We show the existence of a new regime of operation for travelling wave tubes (TWTs) composed of slow-wave periodic structures that support two or more electromagnetic modes, with at least two synchronized with an electron beam. The interaction between the slow-wave structure and an electron beam is quantified using a multi transmission line approach (MTL) and transfer matrix analysis leading to the identification of modes with complex Bloch wavenumber. In particular, we report a new operation condition for TWTs based on an electron beam synchronous to two modes exhibiting a degeneracy condition near a band edge in a MTL slow-wave periodic structure. We show a phenomenological change in the band structure of periodic TWT where we observe at least two growing modal cooperating solutions as opposed to a uniform MTL interacting with an electron beam where there is strictly only one growing mode solution.

  18. Vacuum degeneracy of a circuit-QED system in the ultrastrong coupling regime

    E-Print Network [OSTI]

    Pierre Nataf; Cristiano Ciuti

    2010-01-15T23:59:59.000Z

    We investigate theoretically the quantum vacuum properties of a chain of $N$ superconducting Josephson atoms inductively coupled to a transmission line resonator. We derive the quantum field Hamiltonian for such circuit-QED system, showing that, due to the type and strength of the interaction, a quantum phase transition can occur with a twice degenerate quantum vacuum above a critical coupling. In the finite-size case, the degeneracy is lifted, with an energy splitting decreasing exponentially with increasing values of $g^2 N^2$, where $g$ is the dimensionless vacuum Rabi coupling per artificial atom. We determine analytically the ultrastrong coupling asymptotic expression of the two degenerate vacua for an arbitrary number of artificial atoms and of resonator modes. In the ultrastrong coupling regime the degeneracy is protected with respect to random fluctuations of the transition energies of the Josephson elements.

  19. Growth and nucleation regimes in boron doped silicon by dynamical x-ray diffraction

    SciTech Connect (OSTI)

    Will, J., E-mail: johannes.will@fau.de; Gröschel, A.; Bergmann, C.; Weißer, M.; Magerl, A. [Crystallography and Structural Physics, University of Erlangen-Nürnberg, Staudtstr. 3, 91058 Erlangen (Germany)

    2014-09-15T23:59:59.000Z

    The oxygen precipitation of highly (17.5 m? cm) and moderately (4.5 ? cm) boron (B) doped silicon (Si) crystals at 780?°C is investigated by following in-situ the evolution of diffraction Pendellösung oscillations. All samples show an initial diffusion-driven growth process which may change over into Ostwald ripening. For the highly doped sample and involving a nucleation step at 450?°C for 30?h, the precipitate density ? is enhanced by a factor of 8 as compared to the moderately doped sample. The influence of a high B concentration on ? is dramatically higher for the samples directly heated to 780?°C, where an enhancement factor of 80 is found. Considering Ostwald ripening as a second growth regime reveals consistent ripening rates and surface energies ? with those found at 900?°C in a previous publication.

  20. A new high performance field reversed configuration operating regime in the C-2 device

    SciTech Connect (OSTI)

    Tuszewski, M.; Smirnov, A.; Thompson, M. C.; Barnes, D.; Binderbauer, M. W.; Brown, R.; Bui, D. Q.; Clary, R.; Conroy, K. D.; Deng, B. H.; Dettrick, S. A.; Douglass, J. D.; Garate, E.; Glass, F. J.; Gota, H.; Guo, H.Y.; Gupta, D.; Gupta, S.; Kinley, J. S.; Knapp, K. [Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688 (United States); and others

    2012-05-15T23:59:59.000Z

    Large field reversed configurations (FRCs) are produced in the C-2 device by combining dynamic formation and merging processes. The good confinement of these FRCs must be further improved to achieve sustainment with neutral beam (NB) injection and pellet fuelling. A plasma gun is installed at one end of the C-2 device to attempt electric field control of the FRC edge layer. The gun inward radial electric field counters the usual FRC spin-up and mitigates the n = 2 rotational instability without applying quadrupole magnetic fields. Better plasma centering is also obtained, presumably from line-tying to the gun electrodes. The combined effects of the plasma gun and of neutral beam injection lead to the high performance FRC operating regime, with FRC lifetimes up to 3 ms and with FRC confinement times improved by factors 2 to 4.

  1. Relativistic X-Ray Free Electron Lasers in the Quantum Regime

    E-Print Network [OSTI]

    Bengt Eliasson; Padma Kant Shukla

    2012-03-02T23:59:59.000Z

    We present a nonlinear theory for relativistic X-ray free electron lasers in the quantum regime, using a collective Klein-Gordon (KG) equation (for relativistic electrons), which is coupled with the Maxwell-Poisson equations for the electromagnetic and electrostatic fields. In our model, an intense electromagnetic wave is used as a wiggler which interacts with a relativistic electron beam to produce coherent tunable radiation. The KG-Maxwell-Poisson model is used to derive a general nonlinear dispersion relation for parametric instabilities in three-space-dimensions, including an arbitrarily large amplitude electromagnetic wiggler field. The nonlinear dispersion relation reveals the importance of quantum recoil effects and oblique scattering of the radiation that can be tuned by varying the beam energy.

  2. Quantum Ratchets on Maximally Uniform States in Phase Space: Semiclassical Full-Chaos Regime

    E-Print Network [OSTI]

    Itzhack Dana

    2008-10-10T23:59:59.000Z

    A generic kind of quantum chaotic ratchet is introduced, based on initial states that are \\emph{uniform} in phase space with the \\emph{maximal possible} resolution of one Planck cell. Unlike a classical phase-space uniform density, such a state usually carries a \\emph{nonzero} ratchet current, even in \\emph{symmetric} systems. This quantum ratchet effect basically emerges from the generic asymmetry of the state quasicoordinates in the Planck cell. It is shown, on the basis of exact results, general arguments, and extensive numerical evidence, that in a semiclassical full-chaos regime the variance of the current over all the states is nearly proportional to the chaotic-diffusion rate and to the square of the scaled Planck constant. Experimental realizations are suggested.

  3. Non-perturbative analysis of space charge limited electron flow in critical regimes

    SciTech Connect (OSTI)

    Rokhlenko, A.; Lebowitz, J. L. [Department of Mathematics, Rutgers University, Piscataway, New Jersey 08854-8019 (United States)

    2014-08-07T23:59:59.000Z

    The combined Eulerian-Lagrangian formalism, developed in our previous work for studying the turn on regime of a one-dimensional diode, is extended for wider versatility and better precision in the study of the time dependent space charge limited electron flow with fixed injected current. An analytical analysis is supplemented with an approximate numerical scheme which appears to be sufficiently accurate to calculate the flow evolution until the process approaches stabilization or becomes unstable. This can be compared with properties of stationary flows and showed to be in a good agreement with them. When the stabilization is impossible, the ratio of anode to cathode currents is decreasing and thus the space charge is accumulated in the diode. We discuss the limitations of our approach and give some qualitative estimates for the flow parameters when stabilization is impossible.

  4. Photon emission by ultra-relativistic positrons in crystalline undulators: the high-energy regime

    E-Print Network [OSTI]

    Krause, W; Solov'yov, A V; Greiner, W

    2015-01-01T23:59:59.000Z

    This paper discusses the undulator radiation emitted by high-energy positrons during planar channeling in periodically bent crystals. We demonstrate that the construction of the undulator for positrons with energies of 10 GeV and above is only possible if one takes into account the radiative energy losses. The frequency of the undulator radiation depends on the energy of the particle. Thus the decrease of the particle's energy during the passage of the crystal should result in the destruction of the undulator radiation regime. However, we demonstrate that it is possible to avoid the destructive influence of the radiative losses on the frequency of the undulator radiation by the appropriate variation of the shape of the crystal channels. We also discuss a method by which, to our mind, it would be possible to prepare the crystal with the desired properties of its channels.

  5. Gibbs-Preserving Maps outperform Thermal Operations in the quantum regime

    E-Print Network [OSTI]

    Philippe Faist; Jonathan Oppenheim; Renato Renner

    2015-04-10T23:59:59.000Z

    In this brief note, we compare two frameworks for characterizing possible operations in quantum thermodynamics. One framework considers Thermal Operations---unitaries which conserve energy. The other framework considers all maps which preserve the Gibbs state at a given temperature. Thermal Operations preserve the Gibbs state; hence a natural question which arises is whether the two frameworks are equivalent. Classically, this is true---Gibbs-Preserving Maps are no more powerful than Thermal Operations. Here, we show that this no longer holds in the quantum regime: a Gibbs-Preserving Map can generate coherent superpositions of energy levels while Thermal Operations cannot. This gap has an impact on clarifying a mathematical framework for quantum thermodynamics.

  6. Single-particle spectral density of a Bose gas in the two-fluid hydrodynamic regime

    SciTech Connect (OSTI)

    Arahata, Emiko; Nikuni, Tetsuro; Griffin, Allan [Department of Physics, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601 (Japan); Department of Physics, University of Toronto, Toronto, Ontario, M5S 1A7 (Canada)

    2011-11-15T23:59:59.000Z

    In Bose superfluids, the single-particle Green's function can be directly related to the superfluid velocity-velocity correlation function in the hydrodynamic regime. An explicit expression for the single-particle spectral density was originally written down by Hohenberg and Martin in 1965, starting from the two-fluid equations for a superfluid. We give a simple derivation of their results. Using these results, we calculate the relative weights of first and second sound modes in the single-particle spectral density as a function of temperature in a uniform Bose gas. We show that the second sound mode makes a dominant contribution to the single-particle spectrum in a relatively high-temperature region. We also discuss the possibility of experimental observation of the second sound mode in a Bose gas by photoemission spectroscopy.

  7. Observation of EIT-enhanced cross-phase modulation in the short-pulse regime

    E-Print Network [OSTI]

    Dmochowski, Greg; Hallaji, Matin; Zhuang, Chao; Hayat, Alex; Steinberg, Aephraim

    2015-01-01T23:59:59.000Z

    We present an experiment using a sample of laser-cooled Rb atoms to show that cross-phase modulation schemes continue to benefit from electromagnetically-induced transparency (EIT) even as the transparency window is made narrower than the signal bandwidth (i.e., for signal pulses much shorter than the response time of the EIT system). Addressing concerns that narrow EIT windows might not prove useful for such applications, we show that while the peak phase shift saturates in this regime, it does not drop, and the time-integrated effect continues to scale inversely with EIT window width. This integrated phase shift is an important figure of merit for tasks such as the detection of single-photon-induced cross phase shifts.

  8. Precision Measurements of $A_1^n$ in the Deep Inelastic Regime

    E-Print Network [OSTI]

    D. S. Parno; D. Flay; M. Posik; K. Allada; W. Armstrong; T. Averett; F. Benmokhtar; W. Bertozzi; A. Camsonne; M. Canan; G. D. Cates; C. Chen; J. -P. Chen; S. Choi; E. Chudakov; F. Cusanno; M. M. Dalton; W. Deconinck; C. W. de Jager; X. Deng; A. Deur; C. Dutta; L. El Fassi; G. B. Franklin; M. Friend; H. Gao; F. Garibaldi; S. Gilad; R. Gilman; O. Glamazdin; S. Golge; J. Gomez; L. Guo; O. Hansen; D. W. Higinbotham; T. Holmstrom; J. Huang; C. Hyde; H. F. Ibrahim; X. Jiang; G. Jin; J. Katich; A. Kelleher; A. Kolarkar; W. Korsch; G. Kumbartzki; J. J. LeRose; R. Lindgren; N. Liyanage; E. Long; A. Lukhanin; V. Mamyan; D. McNulty; Z. -E. Meziani; R. Michaels; M. Mihovilovi?; B. Moffit; N. Muangma; S. Nanda; A. Narayan; V. Nelyubin; B. Norum; Nuruzzaman; Y. Oh; J. C. Peng; X. Qian; Y. Qiang; A. Rakhman; S. Riordan; A. Saha; B. Sawatzky; M. H. Shabestari; A. Shahinyan; S. Širca; P. Solvignon; R. Subedi; V. Sulkosky; W. A. Tobias; W. Troth; D. Wang; Y. Wang; B. Wojtsekhowski; X. Yan; H. Yao; Y. Ye; Z. Ye; L. Yuan; X. Zhan; Y. Zhang; Y. -W. Zhang; B. Zhao; X. Zheng

    2014-12-14T23:59:59.000Z

    We have performed precision measurements of the double-spin virtual-photon asymmetry $A_1$ on the neutron in the deep inelastic scattering regime, using an open-geometry, large-acceptance spectrometer. Our data cover a wide kinematic range $0.277 \\leq x \\leq 0.548$ at an average $Q^2$ value of 3.078~(GeV/c)$^2$, doubling the available high-precision neutron data in this $x$ range. We have combined our results with world data on proton targets to extract the ratio of polarized-to-unpolarized parton distribution functions for up quarks and for down quarks in the same kinematic range. Our data are consistent with a previous observation of an $A_1^n$ zero crossing near $x=0.5$. We find no evidence of a transition to a positive slope in $(\\Delta d + \\Delta \\bar{d})/(d + \\bar{d})$ up to $x=0.548$.

  9. On the Ginzburg--Landau Functional in the Surface Superconductivity Regime

    E-Print Network [OSTI]

    M. Correggi; N. Rougerie

    2014-12-12T23:59:59.000Z

    We present new estimates on the two-dimensional Ginzburg-Landau energy of a type-II superconductor in an applied magnetic field varying between the second and third critical fields. In this regime, superconductivity is restricted to a thin layer along the boundary of the sample. We provide new energy lower bounds, proving that the Ginzburg-Landau energy is determined to leading order by the minimization of a simplified 1D functional in the direction perpendicular to the boundary. Estimates relating the density of the Ginzburg-Landau order parameter to that of the 1D problem follow. In the particular case of a disc sample, a refinement of our method leads to a pointwise estimate on the Ginzburg-Landau order parameter, thereby proving a strong form of uniformity of the surface superconductivity layer, related to a conjecture by Xing-Bin Pan.

  10. Boundary Behavior of the Ginzburg-Landau Order Parameter in the Surface Superconductivity Regime

    E-Print Network [OSTI]

    M. Correggi; N. Rougerie

    2015-01-27T23:59:59.000Z

    We study the 2D Ginzburg-Landau theory for a type-II superconductor in an applied magnetic field varying between the second and third critical value. In this regime the order parameter minimizing the GL energy is concentrated along the boundary of the sample and is well approximated to leading order by a simplified 1D profile in the direction perpendicular to the boundary. Motivated by a conjecture of Xing-Bin Pan, we address the question of whether this approximation can hold uniformly in the boundary region. We prove that this is indeed the case as a corollary of a refined, second order energy expansion including contributions due to the curvature of the sample. Local variations of the GL order parameter are controlled by the second order term of this energy expansion, which allows us to prove the desired uniformity of the surface superconductivity layer.

  11. Thermonuclear Burning Regimes and the Use of SNe Ia in Cosmology

    E-Print Network [OSTI]

    E. I. Sorokina; S. I. Blinnikov; O. S. Bartunov

    1999-10-02T23:59:59.000Z

    The calculations of the light curves of thermonuclear supernovae are carried out by a method of multi-group radiation hydrodynamics. The effects of spectral lines and expansion opacity are taken into account. The predictions for UBVI fluxes are given. The values of rise time for B and V bands found in our calculations are in good agreement with the observed values. We explain why our results for the rise time have more solid physical justification than those obtained by other authors. It is shown that small variations in the chemical composition of the ejecta, produced in the explosions with different regimes of nuclear burning, can influence drastically the light curve decline in the B band and, to a lesser extent, in the V band. We argue that recent results on positive cosmological constant Lambda, found from the high redshift supernova observations, could be wrong in the case of possible variations of the preferred mode of nuclear burning in the earlier Universe.

  12. Gibbs-Preserving Maps outperform Thermal Operations in the quantum regime

    E-Print Network [OSTI]

    Philippe Faist; Jonathan Oppenheim; Renato Renner

    2014-06-13T23:59:59.000Z

    In this brief note, we compare two frameworks for characterizing possible operations in quantum thermodynamics. One framework considers Thermal Operations---unitaries which conserve energy. The other framework considers all maps which preserve the Gibbs state at a given temperature. Thermal Operations preserve the Gibbs state; hence a natural question which arises is whether the two frameworks are equivalent. Classically, this is true---Gibbs-Preserving Maps are no more powerful than Thermal Operations. Here, we show that this no longer holds in the quantum regime: a Gibbs-Preserving Map can generate coherent superpositions of energy levels while Thermal Operations cannot. This gap has an impact on clarifying a mathematical framework for quantum thermodynamics.

  13. High energy bursts from a solid state laser operated in the heat capacity limited regime

    DOE Patents [OSTI]

    Albrecht, G.; George, E.V.; Krupke, W.F.; Sooy, W.; Sutton, S.B.

    1996-06-11T23:59:59.000Z

    High energy bursts are produced from a solid state laser operated in a heat capacity limited regime. Instead of cooling the laser, the active medium is thermally well isolated. As a result, the active medium will heat up until it reaches some maximum acceptable temperature. The waste heat is stored in the active medium itself. Therefore, the amount of energy the laser can put out during operation is proportional to its mass, the heat capacity of the active medium, and the temperature difference over which it is being operated. The high energy burst capacity of a heat capacity operated solid state laser, together with the absence of a heavy, power consuming steady state cooling system for the active medium, will make a variety of applications possible. Alternately, cooling takes place during a separate sequence when the laser is not operating. Industrial applications include new material working processes. 5 figs.

  14. High energy bursts from a solid state laser operated in the heat capacity limited regime

    DOE Patents [OSTI]

    Albrecht, Georg (Livermore, CA); George, E. Victor (Livermore, CA); Krupke, William F. (Pleasanton, CA); Sooy, Walter (Pleasanton, CA); Sutton, Steven B. (Manteca, CA)

    1996-01-01T23:59:59.000Z

    High energy bursts are produced from a solid state laser operated in a heat capacity limited regime. Instead of cooling the laser, the active medium is thermally well isolated. As a result, the active medium will heat up until it reaches some maximum acceptable temperature. The waste heat is stored in the active medium itself. Therefore, the amount of energy the laser can put out during operation is proportional to its mass, the heat capacity of the active medium, and the temperature difference over which it is being operated. The high energy burst capacity of a heat capacity operated solid state laser, together with the absence of a heavy, power consuming steady state cooling system for the active medium, will make a variety of applications possible. Alternately, cooling takes place during a separate sequence when the laser is not operating. Industrial applications include new material working processes.

  15. Magnetoconvection and dynamo coefficients III: alpha-effect and magnetic pumping in the rapid rotation regime

    E-Print Network [OSTI]

    P. J. Käpylä; M. J. Korpi; M. Ossendrijver; M. Stix

    2006-05-10T23:59:59.000Z

    Aims. The alpha- and gamma-effects, which are responsible for the generation and turbulent pumping of large scale magnetic fields, respectively, due to passive advection by convection are determined in the rapid rotation regime corresponding to the deep layers of the solar convection zone. Methods. A 3D rectangular local model is used for solving the full set of MHD equations in order to compute the electromotive force (emf), E = , generated by the interaction of imposed weak gradient-free magnetic fields and turbulent convection with varying rotational influence and latitude. By expanding the emf in terms of the mean magnetic field, E_i = a_ij , all nine components of a_ij are computed. The diagonal elements of a_ij describe the alpha-effect, whereas the off-diagonals represent magnetic pumping. The latter is essentially the advection of magnetic fields by means other than the underlying large-scale velocity field. Comparisons are made to analytical expressions of the coefficients derived under the first-order smoothing approximation (FOSA). Results. In the rapid rotation regime the latitudinal dependence of the alpha-components responsible for the generation of the azimuthal and radial fields does not exhibit a peak at the poles, as is the case for slow rotation, but at a latitude of about 30 degrees. The magnetic pumping is predominantly radially down- and latitudinally equatorward as in earlier studies. The numerical results compare surprisingly well with analytical expressions derived under first-order smoothing, although the present calculations are expected to lie near the limits of the validity range of FOSA.

  16. Multi-timescale modeling of ignition and flame regimes of n-heptane-air mixtures near spark assisted homogeneous charge compression ignition conditions

    SciTech Connect (OSTI)

    Ju, Yiguang; Sun, Wenting; Burke, M. P.; Gou, Xiaolong; Chen, Zheng

    2011-01-01T23:59:59.000Z

    The flame regimes of ignition and flame propagation as well as transitions between different flame regimes of n-heptane-air mixtures in a one-dimensional, cylindrical, spark assisted homogeneously charged compression ignition (HCCI) reactor are numerically modeled using a multi-timescale method with reduced kinetic mechanism. It is found that the initial mixture temperature and pressure have a dramatic impact on flame dynamics. Depending on the initial temperature gradient, there exist at least six different combustion regimes, an initial single flame front propagation regime, a coupled low temperature and high temperature double-flame regime, a decoupled low temperature and high temperature double-flame regime, a low temperature ignition regime, a single high temperature flame regime, and a hot ignition regime. The results show that the low temperature and high temperature flames have distinct kinetic and transport properties as well as flame speeds, and are strongly influenced by the low temperature chemistry. The pressure and heat release rates are affected by the appearance of different flame regimes and the transitions between them. Furthermore, it is found that the critical temperature gradient for ignition and acoustic wave coupling becomes singular at the negative temperature coefficient (NTC) region. The results show that both the NTC effect and the acoustic wave propagation in a closed reactor have a dramatic impact on the ignition front and acoustic interaction.

  17. Environmental Protection- Industrial Compliance (Newfoundland and Labrador, Canada)

    Broader source: Energy.gov [DOE]

    The Industrial Compliance Section develops and administers Certificates of Approval for the Construction and/or Operation of various industrial facilities. Industries with air emissions and/or...

  18. Workplace Skills Enhancement Program (Newfoundland and Labrador, Canada)

    Broader source: Energy.gov [DOE]

    The Workplace Skills Enhancement Program (WSEP) helps businesses in strategic sectors train employees to improve productivity and/or global competitiveness.

  19. 43NEWFOUNDLAND QUARTERLY MEMoRIAL PREsENTs

    E-Print Network [OSTI]

    Bruneau, Steve

    for Muskrat Falls is to replace oil-fired and coal-fired generating stations in the North American marketplace

  20. Memorial University of Newfoundland Physics 2820 Matlab Basics Winter 2005

    E-Print Network [OSTI]

    deYoung, Brad

    the first group of comment lines which normally tells you how to use the command. So to get help on the plot facility that allows you to find out how to use commands, simply type the command name and you will get command, you type help plot. You can also search for commands; begin by simply typing help help Note

  1. Fixed Link between Labrador and Newfoundland Pre-feasibility Study

    E-Print Network [OSTI]

    deYoung, Brad

    ........................................................32 Rail Tunnel........................................................35 HVDC Cabling Requirements

  2. Newfoundland and Labrador: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall, Pennsylvania:Information296593°,Newcastle, Washington:Newfields,

  3. We introduce a version of the asymptotic expansions for Bessel functions J(z), Y(z) that is valid whenever |z| > (which is deep in the Fresnel regime), as opposed to

    E-Print Network [OSTI]

    Bremer, James

    whenever |z| > (which is deep in the Fresnel regime), as opposed to the standard expansions. On the asymptotics of Bessel functions in the Fresnel regime Z. Heitman , J. Bremer , V. Rokhlin , B. VioreanuFast summation, Fresnel regime 1 #12;On the asymptotics of Bessel functions in the Fresnel regime Given

  4. Approximate models for the ion-kinetic regime in inertial-confinement-fusion capsule implosions

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

    Hoffman, Nelson M. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)] (ORCID:000000030178767X); Zimmerman, George B. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Molvig, Kim [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Rinderknecht, Hans G. [MIT (Massachusetts Inst. of Technology), Cambridge, MA (United States); Rosenberg, Michael J. [MIT (Massachusetts Inst. of Technology), Cambridge, MA (United States); Albright, B. J. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Simakov, Andrei N. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Sio, Hong [MIT (Massachusetts Inst. of Technology), Cambridge, MA (United States)] (ORCID:000000017274236X); Zylstra, Alex B. [MIT (Massachusetts Inst. of Technology), Cambridge, MA (United States); Johnson, Maria Gatu [MIT (Massachusetts Inst. of Technology), Cambridge, MA (United States); Séguin, Fredrick H. [MIT (Massachusetts Inst. of Technology), Cambridge, MA (United States); Frenje, Johan A. [MIT (Massachusetts Inst. of Technology), Cambridge, MA (United States)] (ORCID:0000000168460378); Li, C. K. [MIT (Massachusetts Inst. of Technology), Cambridge, MA (United States); Petrasso, Richard D. [MIT (Massachusetts Inst. of Technology), Cambridge, MA (United States)] (ORCID:0000000258834054); Higdon, David M. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Srinivasan, Gowri [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Glebov, Vladimir Yu. [Univ. of Rochester, NY (United States); Stoeckl, Christian [Univ. of Rochester, NY (United States); Seka, Wolf [Univ. of Rochester, NY (United States); Sangster, T. Craig [Univ. of Rochester, NY (United States)] (ORCID:0000000340402672)

    2015-05-01T23:59:59.000Z

    “Reduced” (i.e., simplified or approximate) ion-kinetic (RIK) models in radiation-hydrodynamic simulations permit a useful description of inertial-confinement-fusion (ICF) implosions where kinetic deviations from hydrodynamic behavior are important. For implosions in or near the kinetic regime (i.e., when ion mean free paths are comparable to the capsule size), simulations using a RIK model give a detailed picture of the time- and space-dependent structure of imploding capsules, allow an assessment of the relative importance of various kinetic processes during the implosion, enable explanations of past and current observations, and permit predictions of the results of future experiments. The RIK simulation method described here uses moment-based reduced kinetic models for transport of mass, momentum, and energy by long-mean-free-path ions, a model for the decrease of fusion reactivity owing to the associated modification of the ion distribution function, and a model of hydrodynamic turbulent mixing. The transport models are based on local gradient-diffusion approximations for the transport of moments of the ion distribution functions, with coefficients to impose flux limiting or account for transport modification. After calibration against a reference set of ICF implosions spanning the hydrodynamic-to-kinetic transition, the method has useful, quantifiable predictive ability over a broad range of capsule parameter space. Calibrated RIK simulations show that an important contributor to ion species separation in ICF capsule implosions is the preferential flux of longer-mean-free-path species out of the fuel and into the shell, leaving the fuel relatively enriched in species with shorter mean free paths. Also, the transport of ion thermal energy is enhanced in the kinetic regime, causing the fuel region to have a more uniform, lower ion temperature, extending over a larger volume, than implied by clean simulations. We expect that the success of our simple approach will motivate continued theoretical research into the development of first-principles-based, comprehensive, self-consistent, yet useable models of kinetic multispecies ion behavior in ICF plasmas.

  5. Wind Regimes in Complex Terrain of the Great Valley of Eastern Tennessee

    SciTech Connect (OSTI)

    Birdwell, Kevin R [ORNL

    2011-05-01T23:59:59.000Z

    This research was designed to provide an understanding of physical wind mechanisms within the complex terrain of the Great Valley of Eastern Tennessee to assess the impacts of regional air flow with regard to synoptic and mesoscale weather changes, wind direction shifts, and air quality. Meteorological data from 2008 2009 were analyzed from 13 meteorological sites along with associated upper level data. Up to 15 ancillary sites were used for reference. Two-step complete linkage and K-means cluster analyses, synoptic weather studies, and ambient meteorological comparisons were performed to generate hourly wind classifications. These wind regimes revealed seasonal variations of underlying physical wind mechanisms (forced channeled, vertically coupled, pressure-driven, and thermally-driven winds). Synoptic and ambient meteorological analysis (mixing depth, pressure gradient, pressure gradient ratio, atmospheric and surface stability) suggested up to 93% accuracy for the clustered results. Probabilistic prediction schemes of wind flow and wind class change were developed through characterization of flow change data and wind class succession. Data analysis revealed that wind flow in the Great Valley was dominated by forced channeled winds (45 67%) and vertically coupled flow (22 38%). Down-valley pressure-driven and thermally-driven winds also played significant roles (0 17% and 2 20%, respectively), usually accompanied by convergent wind patterns (15 20%) and large wind direction shifts, especially in the Central/Upper Great Valley. The behavior of most wind regimes was associated with detectable pressure differences between the Lower and Upper Great Valley. Mixing depth and synoptic pressure gradients were significant contributors to wind pattern behavior. Up to 15 wind classes and 10 sub-classes were identified in the Central Great Valley with 67 joined classes for the Great Valley at-large. Two-thirds of Great Valley at-large flow was defined by 12 classes. Winds flowed on-axis only 40% of the time. The Great Smoky Mountains helped create down-valley pressure-driven winds, downslope mountain breezes, and divergent air flow. The Cumberland Mountains and Plateau were associated with wind speed reductions in the Central Great Valley, Emory Gap Flow, weak thermally-driven winds, and northwesterly down sloping. Ridge-and-valley terrain enhanced wind direction reversals, pressure-driven winds, as well as locally and regionally produced thermally-driven flow.

  6. The US nuclear weapon infrastructure and a stable global nuclear weapon regime

    SciTech Connect (OSTI)

    Immele, John D [Los Alamos National Laboratory; Wagner, Richard L [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    US nuclear weapons capabilities -- extant force structure and nuclear weapons infrastructure as well as declared policy -- influence other nations' nuclear weapons postures, at least to some extent. This influence can be desirable or undesirable, and is, of course, a mixture of both. How strong the influence is, and its nature, are complicated, controversial, and -- in our view -- not well understood but often overstated. Divergent views about this influence and how it might shape the future global nuclear weapons regime seem to us to be the most serious impediment to reaching a national consensus on US weapons policy, force structure and supporting infrastructure. We believe that a paradigm shift to capability-based deterrence and dissuasion is not only consistent with the realities of the world and how it has changed, but also a desirable way for nuclear weapon postures and infrastructures to evolve. The US and other nuclear states could not get to zero nor even reduce nuclear arms and the nuclear profile much further without learning to manage latent capability. This paper has defined three principles for designing NW infrastructure both at the 'next plateau' and 'near zero.' The US can be a leader in reducing weapons and infrastructure and in creating an international regime in which capability gradually substitutes for weapons in being and is transparent. The current 'strategy' of not having policy or a Congressionally-approved plan for transforming the weapons complex is not leadership. If we can conform the US infrastructure to the next plateau and architect it in such a way that it is aligned with further arms reductions, it will have these benefits: The extant stockpile can be reduced in size, while the smaller stockpile still deters attack on the US and Allies. The capabilities of the infrastructure will dissuade emergence of new challenges/threats; if they emerge, nevertheless, the US will be able to deal with them in time. We will begin to transform the way other major powers view their nuclear capability. Finally, and though of less cosmic importance, it will save money in the long run.

  7. High-Resolution Modeling to Assess Tropical Cyclone Activity in Future Climate Regimes

    SciTech Connect (OSTI)

    Lackmann, Gary

    2013-06-10T23:59:59.000Z

    Applied research is proposed with the following objectives: (i) to determine the most likely level of tropical cyclone intensity and frequency in future climate regimes, (ii) to provide a quantitative measure of uncertainty in these predictions, and (iii) to improve understanding of the linkage between tropical cyclones and the planetary-scale circulation. Current mesoscale weather forecasting models, such as the Weather Research and Forecasting (WRF) model, are capable of simulating the full intensity of tropical cyclones (TC) with realistic structures. However, in order to accurately represent both the primary and secondary circulations in these systems, model simulations must be configured with sufficient resolution to explicitly represent convection (omitting the convective parameterization scheme). Most previous numerical studies of TC activity at seasonal and longer time scales have not utilized such explicit convection (EC) model runs. Here, we propose to employ the moving nest capability of WRF to optimally represent TC activity on a seasonal scale using a downscaling approach. The statistical results of a suite of these high-resolution TC simulations will yield a realistic representation of TC intensity on a seasonal basis, while at the same time allowing analysis of the feedback that TCs exert on the larger-scale climate system. Experiments will be driven with analyzed lateral boundary conditions for several recent Atlantic seasons, spanning a range of activity levels and TC track patterns. Results of the ensemble of WRF simulations will then be compared to analyzed TC data in order to determine the extent to which this modeling setup can reproduce recent levels of TC activity. Next, the boundary conditions (sea-surface temperature, tropopause height, and thermal/moisture profiles) from the recent seasons will be altered in a manner consistent with various future GCM/RCM scenarios, but that preserves the large-scale shear and incipient disturbance activity. This will allow (i) a direct comparison of future TC activity that could be expected for an active or inactive season in an altered climate regime, and (ii) a measure of the level of uncertainty and variability in TC activity resulting from different carbon emission scenarios.

  8. Approximate models for the ion-kinetic regime in inertial-confinement-fusion capsule implosions

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

    Hoffman, Nelson M.; Zimmerman, George B.; Molvig, Kim; Rinderknecht, Hans G.; Rosenberg, Michael J.; Albright, B. J.; Simakov, Andrei N.; Sio, Hong; Zylstra, Alex B.; Johnson, Maria Gatu; et al

    2015-05-01T23:59:59.000Z

    “Reduced” (i.e., simplified or approximate) ion-kinetic (RIK) models in radiation-hydrodynamic simulations permit a useful description of inertial-confinement-fusion (ICF) implosions where kinetic deviations from hydrodynamic behavior are important. For implosions in or near the kinetic regime (i.e., when ion mean free paths are comparable to the capsule size), simulations using a RIK model give a detailed picture of the time- and space-dependent structure of imploding capsules, allow an assessment of the relative importance of various kinetic processes during the implosion, enable explanations of past and current observations, and permit predictions of the results of future experiments. The RIK simulation method describedmore »here uses moment-based reduced kinetic models for transport of mass, momentum, and energy by long-mean-free-path ions, a model for the decrease of fusion reactivity owing to the associated modification of the ion distribution function, and a model of hydrodynamic turbulent mixing. The transport models are based on local gradient-diffusion approximations for the transport of moments of the ion distribution functions, with coefficients to impose flux limiting or account for transport modification. After calibration against a reference set of ICF implosions spanning the hydrodynamic-to-kinetic transition, the method has useful, quantifiable predictive ability over a broad range of capsule parameter space. Calibrated RIK simulations show that an important contributor to ion species separation in ICF capsule implosions is the preferential flux of longer-mean-free-path species out of the fuel and into the shell, leaving the fuel relatively enriched in species with shorter mean free paths. Also, the transport of ion thermal energy is enhanced in the kinetic regime, causing the fuel region to have a more uniform, lower ion temperature, extending over a larger volume, than implied by clean simulations. We expect that the success of our simple approach will motivate continued theoretical research into the development of first-principles-based, comprehensive, self-consistent, yet useable models of kinetic multispecies ion behavior in ICF plasmas.« less

  9. A normal-faulting seismic sequence triggered by the 2011 off the Pacific coast of Tohoku Earthquake: Wholesale stress regime changes in the upper plate

    E-Print Network [OSTI]

    Kato, Aitaro

    : Wholesale stress regime changes in the upper plate Aitaro Kato*1 , Shin'ichi Sakai1 , and Kazushige Obara1 1

  10. Comparison of natural and forced amplification regimes in plasma-based soft-x-ray lasers seeded by high-order harmonics

    SciTech Connect (OSTI)

    Oliva, Eduardo; Zeitoun, Philippe; Lambert, Guillaume; Sebban, Stephane [Laboratoire d'Optique Appliquee, ENSTA ParisTech, Ecole Polytechnique Paris Tech, CNRS, UMR 7639, F-91761 Palaiseau Cedex (France); Fajardo, Marta [GoLP, Instituto de Plasmas e Fusao Nuclear, Laboratorio Associado, Instituto Superior Tecnico, Lisbon (Portugal); Ros, David [Laboratoire de Physique des Gaz et Plasmas, Universite Paris Sud 11, Orsay (France); Velarde, Pedro [Instituto de Fusion Nuclear, Universidad Politecnica de Madrid, Madrid (Spain)

    2011-07-15T23:59:59.000Z

    The amplification of high-order harmonics (HOH) in a plasma-based amplifier is a multiscale, temporal phenomenon that couples plasma hydrodynamics, atomic processes, and HOH electromagnetic fields. We use a one-dimensional, time-dependent Maxwell-Bloch code to compare the natural amplification regime and another regime where plasma polarization is constantly forced by the HOH. In this regime, a 10-MW (i.e., 100 times higher than current seeded soft x-ray laser power), 1.5-{mu}J, 140-fs pulse free from the parasitic temporal structures appearing on the natural amplification regime can be obtained.

  11. Calibration of Silver Plasmon Rulers in the 1-25 nm Separation Range: Experimental Indications of Distinct Plasmon Coupling Regimes

    E-Print Network [OSTI]

    Calibration of Silver Plasmon Rulers in the 1-25 nm Separation Range: Experimental Indications of Distinct Plasmon Coupling Regimes Linglu Yang, Hongyun Wang, Bo Yan, and Bjo¨rn M. Reinhard* Department nanoparticles, so-called silver plasmon rulers, are synthesized with use of a rational DNA programmed self

  12. Zero gravity two-phase flow regime transition modeling compared with data and relap5-3d predictions 

    E-Print Network [OSTI]

    Ghrist, Melissa Renee

    2009-05-15T23:59:59.000Z

    This thesis compares air/water two-phase flow regime transition models in zero gravity with data and makes recommendations for zero gravity models to incorporate into the RELAP5-3D thermal hydraulic computer code. Data from numerous researchers...

  13. Fire Regimes and Trees in Florida Dry Prairie Landscapes William J. Platt, Jean M. Huffman1, & Matthew G. Slocum

    E-Print Network [OSTI]

    Beckage, Brian

    3 Fire Regimes and Trees in Florida Dry Prairie Landscapes William J. Platt, Jean M. Huffman1 of North and Central America (Wahlenberg 1946, Platt 1999, Passmore 2005). Along the northern Gulf ecosystem in upland non-flooded habitats (Platt et al. 1988a, Schwartz 1994, DeCoster et al. 1999, Platt

  14. GEOPHYSICAL RESEARCH LETTERS, VOL. 0, NO. 0, PAGES 0-0, M 0, 2001 On the Pacific Ocean regime shift

    E-Print Network [OSTI]

    GEOPHYSICAL RESEARCH LETTERS, VOL. 0, NO. 0, PAGES 0-0, M 0, 2001 On the Pacific Ocean regime shift variability of Pacific Ocean upper ocean heat content is examined for the 1948-1998 period using gridded-wide phenomenon affecting the thermal structure from 60 S to 70 N. EOF analysis of the Pacific Ocean heat content

  15. Radiative heating of the ISCCP upper level cloud regimes and its impact on the large-scale tropical circulation

    E-Print Network [OSTI]

    Radiative heating of the ISCCP upper level cloud regimes and its impact on the large-scale tropical 2012; accepted 14 December 2012; published 31 January 2013. [1] Radiative heating profiles. The resulting radiative heating profiles have maxima of approximately 1 K/day near 12 km, with equal heating

  16. Analytic model of bunched beams for harmonic generation in the low-gain free electron laser regime

    E-Print Network [OSTI]

    Wurtele, Jonathan

    Analytic model of bunched beams for harmonic generation in the low-gain free electron laser regime employs free electron lasers (FELs) with two undulators: the first uses a seed laser to modulate Many proposed x-ray free electron lasers (FELs) are designed to produce radiation starting from

  17. THE PRECIPITATION REGIME OF DRONNING MAUD LAND, ANTARCTICA, DERIVED FROM AMPS (ANTARCTIC MESOSCALE PREDICTION SYSTEM) ARCHIVE DATA

    E-Print Network [OSTI]

    Schlosser, Elisabeth

    THE PRECIPITATION REGIME OF DRONNING MAUD LAND, ANTARCTICA, DERIVED FROM AMPS (ANTARCTIC MESOSCALE. Manning2) 1) Institute of Meteorology and Geophysics, University of Innsbruck, Austria 2) Mesoscale the temporal and spatial distribution of precipitation in DML using AMPS (Antarctic Mesoscale Prediction System

  18. PHYSICAL REVIEW A 88, 042508 (2013) Absence of dynamical steps in the exact correlation potential in the linear response regime

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    . Here we investigate whether the steps appear in the linear response regime, when the response-electron systems at various times. We find there are no step structures in regions where the system responsePHYSICAL REVIEW A 88, 042508 (2013) Absence of dynamical steps in the exact correlation potential

  19. August 1933 / Vol. 8, No. 8 / OPTICS LETTERS 431 Regimes oflaser-induced periodic surface structure on

    E-Print Network [OSTI]

    Sipe,J. E.

    August 1933 / Vol. 8, No. 8 / OPTICS LETTERS 431 Regimes oflaser-induced periodic surface structure on germanium: radiation remnants and surface plasmons JeffF. Young, J.E. Sipe, and H. M. van Driel Department. The measured shift, as a function of the angle of incidence of the damaging beam, is quantitatively interpreted

  20. Helium transport in enhanced confinement regimes on the TEXTOR and DIII-D tokamaks

    SciTech Connect (OSTI)

    Hillis, D.L.; Hogan, J.T.; Wade, M.R.; Klepper, C.C.; Mioduszewski, P.K. (Oak Ridge National Lab., TN (United States)); Finken, K.H.; Baek, W.Y.; Dippel, K.H.; Euringer, H.; Pospieszcyk, A.; Reiter, D.; Rusbuldt, D.; Wolf, G.H. (Association Euratom-Kernforschungsanlage Juelich GmbH (Germany)); West, W.P.; Burrell, K.H.; Gohil, P.; Groebner, R.; Seraydarian, R.A. (General Atomics, San Diego, CA (United States))

    1992-04-01T23:59:59.000Z

    Comparisons of helium (He) transport and exhaust in L-mode and in an enhanced confinement regime (H-mode), which is induced by a polarizing electrode, have been made for the TEXTOR tokamak. The results show an increased tendency for He accumulation when bulk plasma energy and particle confinement are improved during the polarization induced H-mode. Since these results imply that a high He pumping efficiency may be necessary for H-mode burning plasmas, we have begun exploring He transport in a divertor H-mode, similar to that proposed for International Thermonuclear Experimental Reactor (ITER). A collaborative program has been initiated to measure He transport and scaling on DIII-D during L-mode, H-mode, and ELMing H-mode plasma conditions. To simulate the presence of He ash in DIII-D, a 25 ms He puff is injected into a DIII-D plasma resulting in a He concentration of {approx}5%. The time dependence of the He{sup 2+} density profiles in the plasma core is measured by charge-exchange recombination spectroscopy at 11 radial locations.

  1. Weather pattern climatology of the Great Plains and the related wind regime

    SciTech Connect (OSTI)

    Barchet, W.R.

    1982-11-01T23:59:59.000Z

    The meteorology of the Great Plains can be described as a constant progression of air masses, fronts and cyclonic storm systems. Each of these meteorological conditions can be characterized by identifiable isobaric and related weather parameter patterns. Nine such patterns have been defined to type the weather patterns in the Great Plains. Time series of weather pattern types were produced for 62 stations on the Great Plains. Statistical analyses of these time series produced annual and seasonal frequencies of occurrence of the weather pattern types. Maps of the annual and seasonal frequency of occurrence of weather pattern type are presented for the Great Plains. Persistence and alternation frequencies match what is expected for traveling temperate latitude cyclones, anticyclones and fronts. The wind regime for stations at which the anemometer height and location was constant (and known) for a minimum of three consecutive years was stratified by weather pattern type. Statistical analyses were made to show the response of the wind to the large-scale distribution of air pressure associated with a weather pattern type. The response of the wind to the weather pattern is a site-specific result of the interaction of the large-scale meteorology with local terrain, surface roughness and atmospheric stability. Mean wind speed discriminates between pairs of weather pattern types with better than 75% confidence for more than two-thirds of the possible pairs of weather pattern types.

  2. Two regimes of Turbulent Fragmentation and the stellar IMF from Primordial to Present Day Star Formation

    E-Print Network [OSTI]

    Paolo Padoan; AAke Nordlund; Alexei G. Kritsuk; Michael L. Norman; Pak Shing Li

    2007-04-23T23:59:59.000Z

    The Padoan and Nordlund model of the stellar initial mass function (IMF) is derived from low order statistics of supersonic turbulence, neglecting gravity (e.g. gravitational fragmentation, accretion and merging). In this work the predictions of that model are tested using the largest numerical experiments of supersonic hydrodynamic (HD) and magneto-hydrodynamic (MHD) turbulence to date (~1000^3 computational zones) and three different codes (Enzo, Zeus and the Stagger Code). The model predicts a power law distribution for large masses, related to the turbulence energy power spectrum slope, and the shock jump conditions. This power law mass distribution is confirmed by the numerical experiments. The model also predicts a sharp difference between the HD and MHD regimes, which is recovered in the experiments as well, implying that the magnetic field, even below energy equipartition on the large scale, is a crucial component of the process of turbulent fragmentation. These results suggest that the stellar IMF of primordial stars may differ from that in later epochs of star formation, due to differences in both gas temperature and magnetic field strength. In particular, we find that the IMF of primordial stars born in turbulent clouds may be narrowly peaked around a mass of order 10 solar masses, as long as the column density of such clouds is not much in excess of 10^22 cm^-2.

  3. Investigation of the electron trajectories and gain regimes of the whistler pumped free-electron laser

    SciTech Connect (OSTI)

    Jafarinia, F.; Jafari, S. [Department of Physics, University of Guilan, Rasht 41335-1914 (Iran, Islamic Republic of); Mehdian, H. [Department of Physics and Institute for Plasma Research, Tarbiat Moallem University, Tehran 15614 (Iran, Islamic Republic of)

    2013-04-15T23:59:59.000Z

    A free-electron laser (FEL) scheme, which employs the whistler wave as a slow electromagnetic wave wiggler, was studied theoretically. Subjected to the transverse fields of whistler wave wiggler, the beam electrons are the source of the energy needed to produce electromagnetic radiation. The strength and the period of the wiggler field depend on the parameters of the magnetoplasma medium. This configuration has a higher tunability by controlling the plasma density, on top of the {gamma}-tunability of the conventional FELs. The theory of linear gain and electron trajectories was presented and four groups (I, II, III, and IV) of electron orbits were found in the presence of an axial guide magnetic field. Using perturbation analysis, it is found that these groups of orbits were stable except small regions of group I and IV orbits. The function {Phi} which determines the rate of change of axial velocity with beam energy was also derived. In the case in which {Phi}<0 represents a negative-mass regime in which the axial velocity accelerates as the electrons lose energy. Numerical solutions showed that by increasing the cyclotron frequency, the gain for group I and III orbits increased, while a gain decrement was obtained for group II and IV orbits.

  4. Precision Measurements of $A_1^n$ in the Deep Inelastic Regime

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

    Parno, Diana; Flay, David; Posik, Matthew; Allada, Kalyan; Armstrong, Whitney; Averett, Todd; Benmokhtar, Fatiha; Bertozzi, William; Camsonne, Alexandre; Canan, Mustafa; et al

    2015-05-01T23:59:59.000Z

    We have performed precision measurements of the double-spin virtual photon-neutron asymmetry An1 in the deep inelastic scattering regime, using an open-geometry, large-acceptance spectrometer. Our data cover a wide kinematic range 0.277?x?0.548 at an average Q2 value of 3.078~(GeV/c)2, doubling the available high-precision neutron data in this x range. We have combined our results with world data on proton targets to extract the ratio of polarized-to-unpolarized parton distribution functions for up quarks and for down quarks in the same kinematic range. Our data corroborate a previous observation of an An1 zero crossing near x=0.5. We find no evidence of a transitionmore »to a positive slope in (?d+?d¯)/(d+d¯) up to x=0.548; our extraction of (?d+?d¯)/(d+d¯) disfavors leading-order perturbative quantum chromodynamics without orbital angular momentum.« less

  5. The Cellular Burning Regime in Type Ia Supernova Explosions - II. Flame Propagation into Vortical Fuel

    E-Print Network [OSTI]

    F. K. Roepke; W. Hillebrandt; J. C. Niemeyer

    2003-12-08T23:59:59.000Z

    We investigate the interaction of thermonuclear flames in Type Ia supernova explosions with vortical flows by means of numerical simulations. In our study, we focus on small scales, where the flame propagation is no longer dominated by the turbulent cascade originating from large-scale effects. Here, the flame propagation proceeds in the cellular burning regime, resulting from a balance between the Landau-Darrieus instability and its nonlinear stabilization. The interaction of a cellularly stabilized flame front with a vortical fuel flow is explored applying a variety of fuel densities and strengths of the velocity fluctuations. We find that the vortical flow can break up the cellular flame structure if it is sufficiently strong. In this case the flame structure adapts to the imprinted flow field. The transition from the cellularly stabilized front to the flame structure dominated by vortices of the flow proceeds in a smooth way. The implications of the results of our simulations for Type Ia Supernova explosion models are discussed.

  6. Modeling pion physics in the $?$-regime of two-flavor QCD using strong coupling lattice QED

    E-Print Network [OSTI]

    D. J. Cecile; Shailesh Chandrasekharan

    2007-08-03T23:59:59.000Z

    In order to model pions of two-flavor QCD we consider a lattice field theory involving two flavors of staggered quarks interacting strongly with U(1) gauge fields. For massless quarks, this theory has an $SU_L(2)\\times SU_R(2) \\times U_A(1)$ symmetry. By adding a four-fermion term we can break the U_A(1) symmetry and thus incorporate the physics of the QCD anomaly. We can also tune the pion decay constant F, to be small compared to the lattice cutoff by starting with an extra fictitious dimension, thus allowing us to model low energy pion physics in a setting similar to lattice QCD from first principles. However, unlike lattice QCD, a major advantage of our model is that we can easily design efficient algorithms to compute a variety of quantities in the chiral limit. Here we show that the model reproduces the predictions of chiral perturbation theory in the $\\epsilon$-regime.

  7. Precision Measurements of $A_1^n$ in the Deep Inelastic Regime

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

    Parno, Diana; Flay, David; Posik, Matthew; Allada, Kalyan; Armstrong, Whitney; Averett, Todd; Benmokhtar, Fatiha; Bertozzi, William; Camsonne, Alexandre; Canan, Mustafa; Cates, Gordon; Chen, Chunhua; Chen, Jian-Ping; Choi, Seonho; Chudakov, Eugene; Cusanno, Francesco; Dalton, Mark; Deconinck, Wouter; De Jager, Cornelis; Deng, Xiaoyan; Deur, Alexandre; Dutta, Chiranjib; El Fassi, Lamiaa; Franklin, Gregg; Friend, Megan; Gao, Haiyan; Garibaldi, Franco; Gilad, Shalev; Gilman, Ronald; Glamazdin, Oleksandr; Golge, Serkan; Gomez, Javier; Guo, Lei; Hansen, Jens-Ole; Higinbotham, Douglas; Holmstrom, Timothy; Huang, J; Hyde, Charles; Ibrahim Abdalla, Hassan; Jiang, Xiaodong; Jin, Ge; Katich, Joseph; Kelleher, Aidan; Kolarkar, Ameya; Korsch, Wolfgang; Kumbartzki, Gerfried; LeRose, John; Lindgren, Richard; Liyanage, Nilanga; Long, Elena; Lukhanin, Oleksandr; Mamyan, Vahe; McNulty, Dustin; Meziani, Zein-Eddine; Michaels, Robert; Mihovilovic, Miha; Moffit, Bryan; Muangma, Navaphon; Nanda, Sirish; Narayan, Amrendra; Nelyubin, Vladimir; Norum, Blaine; Nuruzzaman, nfn; Oh, Yongseok; Peng, Jen-chieh; Qian, Xin; Qiang, Yi; Rakhman, Abdurahim; Riordan, Seamus; Saha, Arunava; Sawatzky, Bradley; Shabestari, Mitra Hashemi; Shahinyan, Albert; Sirca, Simon; Solvignon-Slifer, Patricia; Subedi, Ramesh; Sulkosky, Vincent; Tobias, William; Troth, Wolfgang; Wang, Diancheng; Wang, Y; Wojtsekhowski, Bogdan; Yan, X; Yao, H; Ye, Yunxiu; Ye, Z; Yuan, Lulin; Zhan, Xiaohui; Zhang, Y; Zhang, Y -W; Zhao, Bo; Zheng, Xiaochao

    2015-05-01T23:59:59.000Z

    We have performed precision measurements of the double-spin virtual photon-neutron asymmetry An1 in the deep inelastic scattering regime, using an open-geometry, large-acceptance spectrometer. Our data cover a wide kinematic range 0.277?x?0.548 at an average Q2 value of 3.078~(GeV/c)2, doubling the available high-precision neutron data in this x range. We have combined our results with world data on proton targets to extract the ratio of polarized-to-unpolarized parton distribution functions for up quarks and for down quarks in the same kinematic range. Our data corroborate a previous observation of an An1 zero crossing near x=0.5. We find no evidence of a transition to a positive slope in (?d+?d¯)/(d+d¯) up to x=0.548; our extraction of (?d+?d¯)/(d+d¯) disfavors leading-order perturbative quantum chromodynamics without orbital angular momentum.

  8. Dynamics of semi-flexible polymer solutions in the highly entangled regime

    E-Print Network [OSTI]

    Manlio Tassieri; R. M. L. Evans; Lucian Barbu-Tudoran; G. Nasir Khan; John Trinick; Tom A. Waigh

    2008-10-17T23:59:59.000Z

    We present experimental evidence that the effective medium approximation (EMA), developed by D.C. Morse [Phys. Rev. E {\\bf 63}, 031502, (2001)], provides the correct scaling law of the macroscopic plateau modulus $G^{0}\\propto\\rho^{4/3}L^{-1/3}_{p}$ (where $\\rho$ is the contour length per unit volume and $L_{p}$ is the persistence length) of semi-flexible polymer solutions, in the highly entangled concentration regime. Competing theories, including a self-consistent binary collision approximation (BCA), have instead predicted $G^{0}\\propto\\rho^{7/5}L^{-1/5}_{p}$. We have tested both the EMA and BCA scaling predictions using actin filament (F-actin) solutions which permit experimental control of $L_p$ independently of other parameters. A combination of passive video particle tracking microrheology and dynamic light scattering yields independent measurements of the elastic modulus $G$ and $L_{p}$ respectively. Thus we can distinguish between the two proposed laws, in contrast to previous experimental studies, which focus on the (less discriminating) concentration functionality of $G$.

  9. Sharp transition between two regimes of operation of dc discharge with two anodes and thermionic emission from cathode

    SciTech Connect (OSTI)

    Mustafaev, A. S.; Grabovskiy, A. [National Mineral Resources University “Gorniy,” St. Petersburg 199106 (Russian Federation)] [National Mineral Resources University “Gorniy,” St. Petersburg 199106 (Russian Federation); Demidov, V. I. [West Virginia University, Morgantown, West Virginia 26506 (United States) [West Virginia University, Morgantown, West Virginia 26506 (United States); St. Petersburg State University, St. Petersburg 199034 (Russian Federation); University ITMO, Kronverkskiy pr. 49, St. Petersburg 197101 (Russian Federation); Kaganovich, I. D. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)] [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States); Koepke, M. E. [West Virginia University, Morgantown, West Virginia 26506 (United States)] [West Virginia University, Morgantown, West Virginia 26506 (United States)

    2014-05-15T23:59:59.000Z

    In a dc discharge plasma with two anodes and thermionic emission from cathode, the two anodes are used for plasma control. The main anode is placed between the cathode and the other auxiliary anode has a circular opening for passing electron current from the cathode to the second anode. It is experimentally demonstrated that a plasma may exhibit a sudden transition between two quasi-stable conditions as one increases the cathode-electron current collected by the auxiliary anode through an aperture, i.e., hole, in the main anode. In one regime, a bright glowing “ball-shaped double layer” appears on the plasma side having a potential drop of 10–15?eV and concomitant ionization in the neighboring region attached to the opening. The second regime is characterized by a uniform potential profile in plasma and an absence of the ball-shaped double layer. The transition between these regimes is accompanied by a significant change in plasma properties, such as the electron energy distribution function (EEDF). Controlling the EEDF is a valuable capability in technological applications. Increasing the gas pressure leads to the elimination of the first regime for sufficiently high gas pressure, the threshold being a few Torr. The disappearance of a regime transition can be explained by invoking an EEDF transition, from being nonlocal at low pressure to becoming local at high pressure. Local EEDF is determined by local values of electric field. Nonlocal EEDF is determined by electric field values elsewhere, and the electron can travel without energy loss over a path much longer than the discharge dimension.

  10. Extension of high T{sub e} regime with upgraded ECRH system in the LHD

    SciTech Connect (OSTI)

    Takahashi, H.; Shimozuma, T.; Kubo, S.; Yoshimura, Y.; Igami, H.; Ito, S.; Kobayashi, S.; Mizuno, Y.; Okada, K.; Mutoh, T.; Nagaoka, K.; Osakabe, M.; Yamada, I.; Nakano, H.; Yokoyama, M.; Ido, T.; Shimizu, A.; Seki, R.; Ida, K.; Yoshinuma, M. [National Institute for Fusion Science, Toki, 509-5292 (Japan); and others

    2014-02-12T23:59:59.000Z

    Enhancement of the output power per gyrotron has been planned in the Large Helical Device (LHD). Three 77-GHz gyrotrons with an output power of more than 1 MW have been operated. In addition, a high power gyrotron with the frequency of 154 GHz (1 MW/5 s, 0.5 MW/CW) was newly installed in 2012 and the total injection power of ECRH reached 4.6 MW. The operational regime of ECRH plasma on the LHD has been extended due to the upgraded ECRH system such as the central electron temperature T{sub e0} = 13.5 keV with n{sub e}?=?1×10{sup 19}m{sup ?3}. In the LHD, an electron-internal-transport barrier (e-ITB) related to the production of high T{sub e} plasmas has been realized by strongly centre-focused ECRH. The electron thermal confinement clearly improved inside the e-ITB. The radial electric field was measured using the heavy ion beam probe. The formation of the positive E{sub r} was observed in the core region, which well agreed with the prediction of the neoclassical transport theory. The energy confinement characteristics have been investigated in the ECRH plasmas. It was found that higher plasma stored energy and lower radiation power was realized in the outward configuration. The plasma stored energy of 530 kJ with n{sub e}?=?3.2×10{sup 19}m{sup ?3}, which is the 1.7 times larger than the previous record in the ECRH plasma in the LHD, has been successfully achieved.

  11. Radiative Heating of the ISCCP Upper Level Cloud Regimes and its Impact on the Large-scale Tropical Circulation

    SciTech Connect (OSTI)

    Li, Wei; Schumacher, Courtney; McFarlane, Sally A.

    2013-01-31T23:59:59.000Z

    Radiative heating profiles of the International Satellite Cloud Climatology Project (ISCCP) cloud regimes (or weather states) were estimated by matching ISCCP observations with radiative properties derived from cloud radar and lidar measurements from the Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) sites at Manus, Papua New Guinea, and Darwin, Australia. Focus was placed on the ISCCP cloud regimes containing the majority of upper level clouds in the tropics, i.e., mesoscale convective systems (MCSs), deep cumulonimbus with cirrus, mixed shallow and deep convection, and thin cirrus. At upper levels, these regimes have average maximum cloud occurrences ranging from 30% to 55% near 12 km with variations depending on the location and cloud regime. The resulting radiative heating profiles have maxima of approximately 1 K/day near 12 km, with equal heating contributions from the longwave and shortwave components. Upper level minima occur near 15 km, with the MCS regime showing the strongest cooling of 0.2 K/day and the thin cirrus showing no cooling. The gradient of upper level heating ranges from 0.2 to 0.4 K/(day?km), with the most convectively active regimes (i.e., MCSs and deep cumulonimbus with cirrus) having the largest gradient. When the above heating profiles were applied to the 25-year ISCCP data set, the tropics-wide average profile has a radiative heating maximum of 0.45Kday-1 near 250 hPa. Column-integrated radiative heating of upper level cloud accounts for about 20% of the latent heating estimated by the Tropical Rainfall Measuring Mission (TRMM) Precipitation Radar (PR). The ISCCP radiative heating of tropical upper level cloud only slightly modifies the response of an idealized primitive equation model forced with the tropics-wide TRMM PR latent heating, which suggests that the impact of upper level cloud is more important to large-scale tropical circulation variations because of convective feedbacks rather than direct forcing by the cloud radiative heating profiles. However, the height of the radiative heating maxima and gradient of the heating profiles are important to determine the sign and patterns of the horizontal circulation anomaly driven by radiative heating at upper levels.

  12. Wave-packet propagation based calculation of above-threshold ionization in the x-ray regime

    E-Print Network [OSTI]

    Tilley, Matthew; Santra, Robin

    2015-01-01T23:59:59.000Z

    We investigate the multi-photon process of above-threshold ionization for the light elements hydrogen, carbon, nitrogen and oxygen in the hard x-ray regime. Numerical challenges are discussed and by comparing Hartree-Fock-Slater calculations to configuration-interaction-singles results we justify the mean-field potential approach in this regime. We present a theoretical prediction of two-photon above-threshold-ionization cross sections for the mentioned elements. Moreover, we study how the importance of above-threshold ionization varies with intensity. We find that for carbon, at x-ray intensities around $10^{23}{\\rm Wcm}^{-2}$, two-photon above-threshold ionization of the K-shell electrons is as probable as one-photon ionization of the L-shell electrons.

  13. Nuclear quadrupole resonances in compact vapor cells: the crossover from the NMR to the NQR interaction regimes

    E-Print Network [OSTI]

    E. A. Donley; J. L. Long; T. C. Liebisch; E. R. Hodby; T. A. Fisher; J. Kitching

    2008-12-10T23:59:59.000Z

    We present the first experimental study that maps the transformation of nuclear quadrupole resonances from the pure nuclear quadrupole regime to the quadrupole-perturbed Zeeman regime. The transformation presents an interesting quantum-mechanical problem, since the quantization axis changes from being aligned along the axis of the electric-field gradient tensor to being aligned along the magnetic field. We achieve large nuclear quadrupole shifts for I = 3/2 131-Xe by using a 1 mm^3 cubic cell with walls of different materials. When the magnetic and quadrupolar interactions are of comparable size, perturbation theory is not suitable for calculating the transition energies. Rather than use perturbation theory, we compare our data to theoretical calculations using a Liouvillian approach and find excellent agreement.

  14. Comparison of strong coupling regimes in bulk GaAs, GaN and ZnO semiconductor microcavities

    E-Print Network [OSTI]

    Boyer, Edmond

    , transmission and absorption spectra of bulk GaAs, GaN and ZnO microcavities, in order to compareComparison of strong coupling regimes in bulk GaAs, GaN and ZnO semiconductor microcavities SAs and GaN microcavities. PACS numbers: 78.67.-n, 71.36.+c, 78.20.Ci, 78.55.Cr, 78.55.Et Keywords: polariton

  15. Assessment of boreal forest historical C dynamics in Yukon River Basin: relative roles of warming and fire regime change

    SciTech Connect (OSTI)

    Yuan, Fengming [ORNL; Yi, Shuhua [Cold and Arid Regions Environmental and Engineering Research Institute, CAS; McGuire, A. David [University of Alaska; Johnson, Kristopher D [University of Alaska, Fairbanks; Liang, Jingjing [University of Alaska, Fairbanks; Harden, Jennifer [USGS, Menlo Park, CA; Kasischke, Eric S. [University of Maryland, College Park; Kurz, Werner [Canadian Forest Service

    2012-01-01T23:59:59.000Z

    Carbon (C) dynamics of boreal forest ecosystems have substantial implications for efforts to mitigate the rise of atmospheric CO2 and may be substantially influenced by warming and changing wildfire regimes. In this study we applied a large-scale ecosystem model that included dynamics of organic soil horizons and soil organic matter characteristics of multiple pools to assess forest C stock changes of the Yukon River Basin (YRB) in Alaska, USA, and Canada from 1960 through 2006, a period characterized by substantial climate warming and increases in wildfire. The model was calibrated for major forests with data from long-term research sites and evaluated using a forest inventory database. The regional assessment indicates that forest vegetation C storage increased by 46 Tg C, but that total soil C storage did not change appreciably during this period. However, further analysis suggests that C has been continuously lost from the mineral soil horizon since warming began in the 1970s, but has increased in the amorphous organic soil horizon. Based on a factorial experiment, soil C stocks would have increased by 158 Tg C if the YRB had not undergone warming and changes in fire regime. The analysis also identified that warming and changes in fire regime were approximately equivalent in their effects on soil C storage, and interactions between these two suggests that the loss of organic horizon thickness associated with increases in wildfire made deeper soil C stocks more vulnerable to loss via decomposition. Subbasin analyses indicate that C stock changes were primarily sensitive to the fraction of burned forest area within each subbasin and that boreal forest ecosystems in the YRB are currently transitioning from being sinks to sources at ;0.7% annual area burned. We conclude that it is important for international mitigation efforts focused on controlling atmospheric CO2 to consider how climate warming and changes in fire regime may concurrently affect the CO2 sink strength of boreal forests. It is also important for large-scale biogeochemical and earth system models to include organic soil dynamics in applications to assess regional C dynamics of boreal forests responding to warming and changes in fire regime.

  16. Nuclear non-proliferation regime effectiveness : an integrated methodology for analyzing highly enriched uranium production scenarios at gas centrifuge enrichment plants

    E-Print Network [OSTI]

    Kwak, Taeshin (Taeshin S.)

    2010-01-01T23:59:59.000Z

    The dramatic change in the international security environment after the collapse of the bipolar system has had a negative impact on the effectiveness of the existing nuclear non-proliferation regime. Furthermore, the success ...

  17. Fast magnetic field annihilation in the relativistic collisionless regime driven by two ultra-short high-intensity laser pulses

    E-Print Network [OSTI]

    Gu, Y J; Kumar, D; Liu, Y; Singh, S K; Esirkepov, T Zh; Bulanov, S V; Weber, S; Korn, G

    2015-01-01T23:59:59.000Z

    The magnetic quadrupole structure formation during the interaction of two ultra-short high power laser pulses with a collisionless plasma is demonstrated with 2.5-dimensional particle-in-cell simulations. The subsequent expansion of the quadrupole is accompanied by magnetic field annihilation in the ultrarelativistic regime, when the magnetic field can not be sustained by the plasma current. This results in a dominant contribution of the displacement current exciting a strong large scale electric?field. This field leads to the conversion of magnetic energy into kinetic energy of accelerated electrons inside the thin current sheet.

  18. Dynamical behavior of the motions associated with the nonlinear periodic regime in a laboratory plasma subject to delayed feedback

    SciTech Connect (OSTI)

    Fukuyama, T.; Shirahama, H. [Faculty of Education, Ehime University, Bunkyo-cho 3, Matsuyama, Ehime 790-8577 (Japan); Watanabe, Y.; Kawai, Y. [Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasugakoen 6-1, Kasuga, Fukuoka 816-8580 (Japan); Taniguchi, K. [Department of Physics, Kyoto University of Education, Fujinomori-cho 1, Fukakusa, Fushimi-ku, Kyoto 612-8522 (Japan)

    2006-07-15T23:59:59.000Z

    Time-delayed feedback is applied to the motions associated with the nonlinear periodic regime generated due to current-driven ion acoustic instability; this is a typical instability in a laboratory plasma, and the dynamical behavior is experimentally investigated using delayed feedback. A time-delayed autosynchronization method is applied. When delayed feedback is applied to the nonlinear periodic orbit, the periodic state changes to various motions depending on the control parameters, namely, the arbitrary time delay and the proportionality constant. Lyapunov exponents are calculated in order to examine the dynamical behavior.

  19. Energy level statistics in the transition regime between integrability and chaos for systems with broken antiunitary symmetry

    E-Print Network [OSTI]

    Marko Robnik; Jure Dobnikar; Tomaz Prosen

    1997-11-10T23:59:59.000Z

    Energy spectra of a particle with mass $m$ and charge $e$ in the cubic Aharonov-Bohm billiard containing around $10^4$ consecutive levels starting from the ground state have been analysed. The cubic Aharonov-Bohm billiard is a plane billiard defined by the cubic conformal mapping of the unit disc pervaded by a point magnetic flux through the origin perpendicular to the plane of the billiard. The magnetic flux does not influence the classical dynamics, but breaks the antiunitary symmetry in the system, which affects the statistics of energy levels. By varying the shape parameter $\\lam$ the classical dynamics goes from integrable ($\\lam =0$) to fully chaotic ($\\lam = 0.2$; Africa billiard). The level spacing distribution $P(S)$ and the number variance $\\Sigma^{2}(L)$ have been studied for 13 different shape parameters on the interval ($0\\le\\lam\\le0.2$). GUE statistics has proven correct for completely chaotic case, while in the mixed regime the fractional power law level repulsion has been observed. The exponent of the level repulsion has been analysed and is found to change smoothly from 0 to 2 as the dynamics goes from integrable to ergodic. Further on, the semiclassical Berry-Robnik theory has been examined. We argue that the semiclassical regime has not been reached and give an estimate for the number of energy levels required for the Berry-Robnik statistics to apply.

  20. A Babcock-Leighton solar dynamo model with multi-cellular meridional circulation in advection- and diffusion-dominated regimes

    E-Print Network [OSTI]

    Belucz, Bernadett; Forgacs-Dajka, Emese

    2015-01-01T23:59:59.000Z

    Babcock-Leighton type solar dynamo models with single-celled meridional circulation are successful in reproducing many solar cycle features. Recent observations and theoretical models of meridional circulation do not indicate a single-celled flow pattern. We examine the role of complex multi-cellular circulation patterns in a Babcock-Leighton solar dynamo in advection- and diffusion-dominated regimes. We show from simulations that presence of a weak, second, high-latitude reverse cell speeds up the cycle and slightly enhances the poleward branch in butterfly diagram, whereas the presence of a second cell in depth reverses the tilt of butterfly wing to an anti-solar type. A butterfly diagram constructed from middle of convection zone yields a solar-like pattern, but this may be difficult to realize in the Sun because of magnetic buoyancy effects. Each of the above cases behaves similarly in higher and lower magnetic diffusivity regimes. However, our dynamo with a meridional circulation containing four cells in...

  1. Trends and challenges in global arms control regimes: Implications for the Mediterranean, North Africa, and the Middle East

    SciTech Connect (OSTI)

    Lehman, R.F. II

    1994-06-01T23:59:59.000Z

    In another sense, however, the nuclear age and ballistic missiles long ago created a much smaller world in which the distinctions between global and regional security have been lessened. In an age of weapons of mass destruction, any point on the earth can find itself suddenly at the center of world attention. This makes it all the more important that we understand all of the arms control tools available, including global approaches. In discussing global arms control regimes, I will focus primarily on those that are open to universal membership such as the Nuclear Nonproliferation Treaty (NPT) or which have global reach, such as certain export control and supplier regimes. It is important to remember, however, that certain regional, bilateral, and even unilateral arms control measures can have a global impact as well. One need only witness the impact of the Treaty on Conventional Forces in Europe (CFE). Despite its mere {open_quotes}Atlantic to the Urals{close_quotes} focus, the CFE treaty helped change the political and strategic calculations of the entire world. Likewise, the Conference on Security and Cooperation in Europe (CSCE), with its headquarters in Vienna, is centered on Europe but spreads from Vancouver to Vladivostok (or perhaps we should say from Amchitka to Kamchatka), circumnavigating much of the northern hemisphere when measured the long way around via North America. The political significance of its successes and failures outdistance CSCE`s geographical spread.

  2. Large positive magnetoresistance effects in the dilute magnetic semiconductor (Zn,Mn)Se in the regime of electron hopping

    SciTech Connect (OSTI)

    Jansson, F., E-mail: fjansson@abo.fi; Wiemer, M.; Gebhard, F.; Baranovskii, S. D. [Department of Physics and Material Sciences Center, Philipps-University, D-35032 Marburg (Germany); Nenashev, A. V. [Institute of Semiconductor Physics, 630090 Novosibirsk (Russian Federation); Novosibirsk State University, 630090 Novosibirsk (Russian Federation); Petznick, S.; Klar, P. J. [Institute of Experimental Physics I, Justus-Liebig-University Giessen, D-35392 Giessen (Germany); Hetterich, M. [Institut für Angewandte Physik and Center for Functional Nanostructures (CFN), Universität Karlsruhe, D-76131 Karlsruhe (Germany)

    2014-08-28T23:59:59.000Z

    Magnetoresistance in dilute magnetic semiconductors is studied in the hopping transport regime. Measurements performed on Cl-doped Zn{sub 1–x}Mn{sub x}Se with x?

  3. Interactions of fire regimes and land use in the central Rio Grande Valley. Forest Service research paper

    SciTech Connect (OSTI)

    Baisan, C.H.; Swetnam, T.W.

    1997-05-01T23:59:59.000Z

    In this paper, we present evidence of dramatic modifications of pre-existing ecological systems by human activities. Our research group at the Laboratory of Tree-Ring Research has conducted extensive studies of fire history in forested ecosystems at more than 60 sites throughout Arizona and New Mexico. Our studies suggest that most of these areas existed in a semi-natural state, litte affected by human populations, before the introduction of large numbers of livestock around the turn of the 20th century. Natural dynamics of biomass accumulation, climatic regimes, and lightning ignitions can account for fire frequencies documented at most sites studied. Recognizable human impacts before the 20 century were probably limited to high use areas and high value resources.

  4. Emission spectra and quantum efficiency of single-photon sources in the cavity-QED strong-coupling regime

    E-Print Network [OSTI]

    Guoqiang Cui; M. G. Raymer

    2008-10-30T23:59:59.000Z

    We derive analytical formulas for the forward emission and side emission spectra of cavity-modified single-photon sources, as well as the corresponding normal-mode oscillations in the cavity quantum electrodynamics (QED) strong-coupling regime. We investigate the effects of pure dephasing, treated in the phase-diffusion model based on a Wiener-Levy process, on the emission spectra and normal-mode oscillations. We also extend our previous calculation of quantum efficiency to include the pure dephasing process. All results are obtained in the Weisskopf-Wigner approximation for an impulse-excited emitter. We find that the spectra are broadened, the depths of the normal-mode oscillations are reduced and the quantum efficiency is decreased in the presence of pure dephasing.

  5. Mixed quantum classical calculation of proton transfer reaction rates: From deep tunneling to over the barrier regimes

    SciTech Connect (OSTI)

    Xie, Weiwei; Xu, Yang; Zhu, Lili; Shi, Qiang, E-mail: qshi@iccas.ac.cn [Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun, Beijing 100190 (China)] [Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun, Beijing 100190 (China)

    2014-05-07T23:59:59.000Z

    We present mixed quantum classical calculations of the proton transfer (PT) reaction rates represented by a double well system coupled to a dissipative bath. The rate constants are calculated within the so called nontraditional view of the PT reaction, where the proton motion is quantized and the solvent polarization is used as the reaction coordinate. Quantization of the proton degree of freedom results in a problem of non-adiabatic dynamics. By employing the reactive flux formulation of the rate constant, the initial sampling starts from the transition state defined using the collective reaction coordinate. Dynamics of the collective reaction coordinate is treated classically as over damped diffusive motion, for which the equation of motion can be derived using the path integral, or the mixed quantum classical Liouville equation methods. The calculated mixed quantum classical rate constants agree well with the results from the numerically exact hierarchical equation of motion approach for a broad range of model parameters. Moreover, we are able to obtain contributions from each vibrational state to the total reaction rate, which helps to understand the reaction mechanism from the deep tunneling to over the barrier regimes. The numerical results are also compared with those from existing approximate theories based on calculations of the non-adiabatic transmission coefficients. It is found that the two-surface Landau-Zener formula works well in calculating the transmission coefficients in the deep tunneling regime, where the crossing point between the two lowest vibrational states dominates the total reaction rate. When multiple vibrational levels are involved, including additional crossing points on the free energy surfaces is important to obtain the correct reaction rate using the Landau-Zener formula.

  6. Exact regularized point particle method for multi-phase flows in the two-way coupling regime

    E-Print Network [OSTI]

    P. Gualtieri; F. Picano; G. Sardina; C. M. Casciola

    2014-05-27T23:59:59.000Z

    Particulate flows have been largely studied under the simplifying assumptions of one-way coupling regime where the disperse phase do not react-back on the carrier fluid. In the context of turbulent flows, many non trivial phenomena such as small scales particles clustering or preferential spatial accumulation have been explained and understood. A more complete view of multiphase flows can be gained calling into play two-way coupling effects, i.e. by accounting for the inter-phase momentum exchange between the carrier and the suspended phase, certainly relevant at increasing mass loading. In such regime, partially investigated in the past by the so-called Particle In Cell (PIC) method, much is still to be learned about the dynamics of the disperse phase and the ensuing alteration of the carrier flow. In this paper we present a new methodology rigorously designed to capture the inter-phase momentum exchange for particles smaller than the smallest hydrodynamical scale, e.g. the Kolmogorov scale in a turbulent flow. In fact, the momentum coupling mechanism exploits the unsteady Stokes flow around a small rigid sphere where the transient disturbance produced by each particle is evaluated in a closed form. The particles are described as lumped, point masses which would lead to the appearance of singularities. A rigorous regularization procedure is conceived to extract the physically relevant interactions between particles and fluid which avoids any "ah hoc" assumption. The approach is suited for high efficiency implementation on massively parallel machines since the transient disturbance produced by the particles is strongly localized in space around the actual particle position. As will be shown, hundred thousands particles can therefore be handled at an affordable computational cost as demonstrated by a preliminary application to a particle laden turbulent shear flow.

  7. The relation between the two-point and the three-point correlation functions in the non-linear gravitational clustering regime

    E-Print Network [OSTI]

    Hiroko Koyama; Taihei Yano

    2005-06-15T23:59:59.000Z

    The connection between the two-point and the three-point correlation functions in the non-linear gravitational clustering regime is studied. Under a scaling hypothesis, we find that the three-point correlation function, $\\zeta$, obeys the scaling law $\\zeta\\propto \\xi^{\\frac{3m+4w-2\\epsilon}{2m+2w}}$ in the nonlinear regime, where $\\xi$, $m$, $w$, and $\\epsilon$ are the two-point correlation function, the power index of the power spectrum in the nonlinear regime, the number of spatial dimensions, and the power index of the phase correlations, respectively. The new formula reveals the origin of the power index of the three-point correlation function. We also obtain the theoretical condition for which the ``hierarchical form'' $\\zeta\\propto\\xi^2$ is reproduced.

  8. Calendar year 1994 groundwater quality report for the Chestnut Ridge Hydrogeologic Regime, Y-12 Plant, Oak Ridge, Tennessee. 1994 groundwater quality data and calculated rate of contaminant migration

    SciTech Connect (OSTI)

    NONE

    1995-02-01T23:59:59.000Z

    This annual groundwater quality report (GWQR) contains groundwater quality data obtained during the 1994 calendar year (CY) at several hazardous and non-hazardous waste-management facilities associated with the US Department of Energy (DOE) Y-12 Plant located on the DOE Oak Ridge Reservation (ORR) southeast of Oak Ridge, Tennessee (Figure 1). These sites are located south of the Y-12 Plant in the Chestnut Ridge Hydrogeologic Regime (Chestnut Ridge Regime), which is one of three regimes defined for the purposes of groundwater quality monitoring at the Y- 12 Plant. The Environmental Management Department of the Y-12 Plant Health, Safety, Environment, and Accountability (HSEA) Organization manages the groundwater monitoring activities in each regime as part of the Y-12 Plant Groundwater Protection Program (GWPP). The GWQR for the Chestnut Ridge Regime is completed in two-parts: Part 1 (this report) containing the groundwater quality data and Part 2 containing a detailed evaluation of the data. The primary purpose of this report is to serve as a reference containing the groundwater quality data obtained each year under the lead of the Y-12 Plant GWPP. However, because it contains information needed to comply with Resource Conservation and Recovery Act (RCRA) interim status assessment monitoring and reporting requirements, this report is submitted to the Tennessee Department of Environment and Conservation (TDEC) by the RCRA reporting deadline (March 1 of the following CY). Part 2 of the annual groundwater report, to be issued mid-year, will contain a regime-wide evaluation of groundwater quality, present the findings and status of ongoing hydrogeologic studies, describe changes in monitoring priorities, and present planned modifications to the groundwater sampling and analysis activities.

  9. Improved Particle Confinement in Transition from Multiple-Helicity to Quasi-Single-Helicity Regimes of a Reversed-Field Pinch

    SciTech Connect (OSTI)

    Frassinetti, L.; Koguchi, H.; Yagi, Y.; Hirano, Y.; Sakakita, H. [National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568 (Japan); Predebon, I.; Spizzo, G. [Consorzio RFX, Euratom-ENEA Association, Corso Stati Uniti 4, 35127 Padova (Italy); White, R. B. [Princeton Plasma Physics Laboratory, Post Office Box 451, Princeton, New Jersey 08543 (United States)

    2006-10-27T23:59:59.000Z

    The quasi-single-helicity (QSH) state of a reversed-field pinch (RFP) plasma is a regime in which the RFP configuration can be sustained by a dynamo produced mainly by a single tearing mode and in which a helical structure with well-defined magnetic flux surfaces arises. In this Letter, we show that spontaneous transitions to the QSH regime enhance the particle confinement. This improvement is originated by the simultaneous and cooperative action of the increase of the magnetic island and the reduction of the magnetic stochasticity.

  10. Stack Sizing Analysis and Optimization for FinFET Logic Cells and Circuits Operating in the Sub/Near-Threshold Regime

    E-Print Network [OSTI]

    Pedram, Massoud

    -threshold regimes. This model accurately captures the drain current as a function of both the gate and drain-inversion region [10]. The drain current of a FinFET transistor in the super-threshold region follows the -power. Unfortunately, the EKV model is difficult to provide back- of-the-envelope insights and is difficult to work

  11. Heroic efforts to save victims of Hitler's regime detailed in UI researchers are recycling worn-out tires and using them to

    E-Print Network [OSTI]

    Lewis, Jennifer

    Heroic efforts to save victims of Hitler's regime detailed in book. UI researchers are recycling worn-out tires and using them to filter out air pollution.4 6 wInside wJan. 21, 1999 I L L I N O I

  12. Session D--Geographic Variation in Mixed Conifer Fire Regimes--Beaty, Taylor USDA Forest Service Gen. Tech. Rep. PSW-GTR-189. 2008. 123

    E-Print Network [OSTI]

    Taylor, Alan

    in California1 R. Matthew Beaty2 and Alan H. Taylor3 Abstract This paper reviews recent research from CaliforniaSession D--Geographic Variation in Mixed Conifer Fire Regimes--Beaty, Taylor USDA Forest Service.g., Spies and Franklin 1989, Veblen and others 1992, Shinneman and Baker 1997, Taylor and Skinner 1998). Yet

  13. Simulating the connections of ENSO and the rainfall regime of East Africa and the upper Blue Nile region using a climate model of the Tropics

    E-Print Network [OSTI]

    Zaroug, M. A. H.

    We simulate the observed statistical relationship between ENSO and the rainfall regime of the upper Blue Nile using the tropical-band version of the regional climate model RegCM4 (or Reg-TB). An ensemble of nine simulations ...

  14. 18 me Congrs Franais de Mcanique Grenoble, 27-31 aot 2007 Anticyclonic selection by instability of parallel flows in a frontal regime

    E-Print Network [OSTI]

    Stegner Alexandre

    different from classical von Karman street. A quasiparallel wake extends up to several diameters behind the cylinder. The vortices are then formed far behind the obstacle and the vortex street is strongly in a frontal regime is asymmetric, one may wonder if the asymme- try of the vortex street could be attributed

  15. Bubble Size Control to Improve Oxygen-Based Bleaching: Characterization of Flow Regimes in Pulp-Water-Gas Three-Phase Flows

    SciTech Connect (OSTI)

    S.M. Ghiaasiaan and Seppo Karrila

    2006-03-20T23:59:59.000Z

    Flow characteristics of fibrous paper pulp-water-air slurries were investigated in a vertical circular column 1.8 m long, with 5.08 cm diameter. Flow structures, gas holdup (void fraction), and the geometric and population characteristics of gas bubbles were experimentally investigated, using visual observation, Gamma-ray densitometry, and flash X-ray photography. Five distinct flow regimes could be visually identified: dispersed bubbly, layered bubbly, plug, churn-turbulent, and slug. Flow regime maps were constructed, and the regime transition lines were found to be sensitive to consistency. The feasibility of using artificial neural networks (ANNs) for the identification of the flow regimes, using the statistical characteristics of pressure fluctuations measured by a single pressure sensor, was demonstrated. Local pressure fluctuations at a station were recorded with a minimally-intrusive transducer. Three-layer, feed-forward ANNs were designed that could identify the four major flow patterns (bubbly, plug, churn, and slug) well. The feasibility of a transportable artificial neural network (ANN) - based technique for the classification of flow regimes was also examined. Local pressures were recorded at three different locations using three independent but similar transducers. An ANN was designed, trained and successfully tested for the classification of the flow regimes using one of the normalized pressure signals (from Sensor 1). The ANN trained and tested for Sensor 1 predicted the flow regimes reasonably well when applied directly to the other two sensors, indicating a good deal of transportability. An ANN-based method was also developed, whereby the power spectrum density characteristics of other sensors were adjusted before they were used as input to the ANN that was based on Sensor 1 alone. The method improved the predictions. The gas-liquid interfacial surface area concentration was also measured in the study. The gas absorption technique was applied, using CO2 as the transferred species and sodium hydroxide as the alkaline agent in water. Statistical analysis was performed to identify the parametric dependencies. The experimental data were empirically correlated.

  16. Realization of solid-state nanothermometer using Ge quantum-dot single-hole transistor in few-hole regime

    SciTech Connect (OSTI)

    Chen, I. H.; Lai, W. T.; Li, P. W., E-mail: pwli@ee.ncu.edu.tw [Department of Electrical Engineering and Center for Nano Science and Technology, National Central University, ChungLi 32001, Taiwan (China)

    2014-06-16T23:59:59.000Z

    Semiconductor Ge quantum-dot (QD) thermometry has been demonstrated based on extraordinary temperature-dependent oscillatory differential conductance (G{sub D}) characteristics of Ge-QD single-hole transistors (SHTs) in the few-hole regime. Full-voltage width-at-half-minimum, V{sub 1/2}, of G{sub D} valleys appears to be fairly linear in the charge number (n) and temperature within the QD in a relationship of eV{sub 1/2}???(1???0.11n)?×?5.15k{sub B}T, providing the primary thermometric quantity. The depth of G{sub D} valley is also proportional to charging energy (E{sub C}) and 1/T via ?G{sub D}???E{sub C}/9.18k{sub B}T, providing another thermometric quantity. This experimental demonstration suggests our Ge-QD SHT offering effective building blocks for nanothermometers over a wide temperature range with a detection temperature as high as 155?K in a spatial resolution less than 10?nm and temperature accuracy of sub-kelvin.

  17. Transitions to improved confinement regimes induced by changes in heating in zero-dimensional models for tokamak plasmas

    SciTech Connect (OSTI)

    Zhu, H. [Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom); Chapman, S. C. [Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom); Max Planck Institute for the Physics of Complex Systems, Dresden (Germany); Department of Mathematics and Statistics, University of Tromso, Tromso (Norway); Dendy, R. O. [Euratom/CCFE Fusion Association, Culham Science Centre, Abingdon, Oxfordshire OX14 3DB (United Kingdom); Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom); Itoh Research Center for Plasma Turbulence, Kyushu University, Kasuga 816-8580 (Japan); Itoh, K. [National Institute for Fusion Science, Toki 509-5292 (Japan); Itoh Research Center for Plasma Turbulence, Kyushu University, Kasuga 816-8580 (Japan)

    2014-06-15T23:59:59.000Z

    It is shown that rapid substantial changes in heating rate can induce transitions to improved energy confinement regimes in zero-dimensional models for tokamak plasma phenomenology. We examine for the first time the effect of step changes in heating rate in the models of Kim and Diamond [Phys. Rev. Lett. 90, 185006 (2003)] and Malkov and Diamond [Phys. Plasmas 16, 012504 (2009)], which nonlinearly couple the evolving temperature gradient, micro-turbulence, and a mesoscale flow; and in the extension of Zhu et al. [Phys. Plasmas 20, 042302 (2013)], which couples to a second mesoscale flow component. The temperature gradient rises, as does the confinement time defined by analogy with the fusion context, while micro-turbulence is suppressed. This outcome is robust against variation of heating rise time and against introduction of an additional variable into the model. It is also demonstrated that oscillating changes in heating rate can drive the level of micro-turbulence through a period-doubling path to chaos, where the amplitude of the oscillatory component of the heating rate is the control parameter.

  18. Study on lower hybrid current drive efficiency at high density towards long-pulse regimes in Experimental Advanced Superconducting Tokamak

    SciTech Connect (OSTI)

    Li, M. H.; Ding, B. J.; Zhang, J. Z.; Gan, K. F.; Wang, H. Q.; Zhang, L.; Wei, W.; Li, Y. C.; Wu, Z. G.; Ma, W. D.; Jia, H.; Chen, M.; Yang, Y.; Feng, J. Q.; Wang, M.; Xu, H. D.; Shan, J. F.; Liu, F. K. [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China); Peysson, Y. [CEA, IRFM, F-13108 Saint Paul-Lez-Durance (France); and others

    2014-06-15T23:59:59.000Z

    Significant progress on both L- and H-mode long-pulse discharges has been made recently in Experimental Advanced Superconducting Tokamak (EAST) with lower hybrid current drive (LHCD) [J. Li et al., Nature Phys. 9, 817 (2013) And B. N. Wan et al., Nucl. Fusion 53, 104006 (2013).]. In this paper, LHCD experiments at high density in L-mode plasmas have been investigated in order to explore possible methods of improving current drive (CD) efficiency, thus to extend the operational space in long-pulse and high performance plasma regime. It is observed that the normalized bremsstrahlung emission falls much more steeply than 1/n{sub e-av} (line-averaged density) above n{sub e-av}?=?2.2?×?10{sup 19}?m{sup ?3} indicating anomalous loss of CD efficiency. A large broadening of the operating line frequency (f?=?2.45?GHz), measured by a radio frequency (RF) probe located outside the EAST vacuum vessel, is generally observed during high density cases, which is found to be one of the physical mechanisms resulting in the unfavorable CD efficiency. Collisional absorption of lower hybrid wave in the scrape off layer (SOL) may be another cause, but this assertion needs more experimental evidence and numerical analysis. It is found that plasmas with strong lithiation can improve CD efficiency largely, which should be benefited from the changes of edge parameters. In addition, several possible methods are proposed to recover good efficiency in future experiments for EAST.

  19. Two-temperature pair potentials and phonon spectra for simple metals in the warm dense matter regime

    E-Print Network [OSTI]

    Harbour, Louis; Klug, Dennis D; Lewis, Laurent J

    2015-01-01T23:59:59.000Z

    We develop ion-ion pair potentials for Al, Na and K for densities and temperatures relevant to the warm-dense-matter (WDM) regime. Furthermore, we emphasize non-equilibrium states where the ion temperature $T_i$ differs from the electron temperature $T_e$. This work focuses mainly on ultra-fast laser-metal interactions where the energy of the laser is almost exclusively transferred to the electron sub-system over femtosecond time scales. This results in a two-temperature system with $T_e>T_i$ and with the ions still at the initial room temperature $T_i=T_r$. First-principles calculations, such as density functional theory (DFT) or quantum Monte Carlo, are as yet not fully feasible for WDM conditions due to lack of finite-$T$ features, e.g. pseudopotentials, and extensive CPU time requirements. Simpler methods are needed to study these highly complex systems. We propose to use two-temperature pair potentials $U_{ii}(r, T_i,T_e)$ constructed from linear-response theory using the non-linear electron density $n(\\...

  20. Towards quantitative control on discreteness error in the non-linear regime of cosmological N body simulations

    E-Print Network [OSTI]

    Michael Joyce; Bruno Marcos; Thierry Baertschiger

    2008-11-26T23:59:59.000Z

    The effects of discreteness arising from the use of the N-body method on the accuracy of simulations of cosmological structure formation are not currently well understood. After a discussion of how the relevant discretisation parameters introduced should be extrapolated to recover the Vlasov-Poisson limit, we study numerically, and with analytical methods we have developed recently, the central issue of how finite particle density affects the precision of results. In particular we focus on the power spectrum at wavenumbers around and above the Nyquist wavenumber, in simulations in which the force resolution is taken smaller than the initial interparticle spacing. Using simulations of identical theoretical initial conditions sampled on four different "pre-initial" configurations (three different Bravais lattices, and a glass) we obtain a {\\it lower bound} on the real discreteness error. With the guidance of our analytical results, we establish with confidence that the measured dispersion is not contaminated either by finite box size effects or by subtle numerical effects. Our results show notably that, at wavenumbers {\\it below} the Nyquist wavenumber, the dispersion increases monotonically in time throughout the simulation, while the same is true above the Nyquist wavenumber once non-linearity sets in. For normalizations typical of cosmological simulations, we find lower bounds on errors at the Nyquist wavenumber of order of a percent, and larger above this scale. The only way this error may be reduced below these levels at these scales, and indeed convergence to the physical limit firmly established, is by extrapolation, at fixed values of the other relevant parameters, to the regime in which the mean comoving interparticle distance becomes less than the force smoothing scale.

  1. ENSO regimes and the late 1970's climate shift: The role of synoptic weather and South Pacific ocean spiciness

    SciTech Connect (OSTI)

    O'Kane, Terence J.; Matear, Richard J.; Chamberlain, Matthew A.; Oke, Peter R.

    2014-08-15T23:59:59.000Z

    South Pacific subtropical density compensated temperature and salinity (spiciness) anomalies are known to be associated with decadal equatorial variability, however, the mechanisms by which such disturbances are generated, advect and the degree to which they modulate the equatorial thermocline remains controversial. During the late 1970's a climate regime transition preceded a period of strong and sustained El Nino events. Using an ocean general circulation model forced by the constituent mechanical and thermodynamic components of the reanalysed atmosphere we show that the late 1970's transition coincided with the arrival of a large-scale, subsurface cold and fresh water anomaly in the central tropical Pacific. An ocean reanalysis for the period 1990–2007 that assimilates subsurface Argo, XBT and CTD data, reveals that disturbances occur due to the subduction of negative surface salinity anomalies from near 30° S, 100° W which are advected along the ?=25–26 kgm{sup ?3} isopycnal surfaces. These anomalies take, on average, seven years to reach the central equatorial Pacific where they may substantially perturb the thermocline before the remnants ultimately ventilate in the region of the western Pacific warm pool. Positive (warm–salty) disturbances, known to occur due to late winter diapycnal mixing and isopycnal outcropping, arise due to both subduction of subtropical mode waters and subsurface injection. On reaching the equatorial band (10° S–0° S) these disturbances tend to deepen the thermocline reducing the model's ENSO. In contrast the emergence of negative (cold–fresh) disturbances at the equator are associated with a shoaling of the thermocline and El Nino events. Process studies are used to show that the generation and advection of anomalous density compensated thermocline disturbances critically depend on stochastic forcing of the intrinsic ocean by weather. We further show that in the absence of the inter-annual component of the atmosphere forcing Central Pacific El Nino events are manifest.

  2. Relativistic Winds from Compact Gamma-ray Sources: I. Radiative Acceleration in the Klein-Nishina Regime

    E-Print Network [OSTI]

    Piero Madau; Christopher Thompson

    1999-11-30T23:59:59.000Z

    We consider the radiative acceleration to relativistic bulk velocities of a cold, optically thin plasma which is exposed to an external source of gamma-rays. The flow is driven by radiative momentum input to the gas, the accelerating force being due to Compton scattering in the relativistic Klein-Nishina limit. The bulk Lorentz factor of the plasma, Gamma, derived as a function of distance from the radiating source, is compared with the corresponding result in the Thomson limit. Depending on the geometry and spectrum of the radiation field, we find that particles are accelerated to the asymptotic Lorentz factor at infinity much more rapidly in the relativistic regime; and the radiation drag is reduced as blueshifted, aberrated photons experience a decreased relativistic cross section and scatter preferentially in the forward direction. The random energy imparted to the plasma by gamma-rays can be converted into bulk motion if the hot particles execute many Larmor orbits before cooling. This `Compton afterburn' may be a supplementary source of momentum if energetic leptons are injected by pair creation, but can be neglected in the case of pure Klein-Nishina scattering. Compton drag by side-scattered radiation is shown to be more important in limiting the bulk Lorentz factor than the finite inertia of the accelerating medium. The processes discussed here may be relevant to a variety of astrophysical situations where luminous compact sources of hard X- and gamma-ray photons are observed, including active galactic nuclei, galactic black hole candidates, and gamma-ray bursts.

  3. Evaluation Of Calendar Year 1997 Groundwater and surface Water Quality Data For the Bear Creek Hydrogeologic regime At The U.S. Department of Energy Y-12 Plant, Oak Ridge, Tennessee

    SciTech Connect (OSTI)

    Jones, S.B.

    1998-09-01T23:59:59.000Z

    This report presents an evaluation of the groundwater and surface water monitoring data obtained in the Bear Creek Hydrogeologic Regime (Bear Creek Regime) during calendar year (CY) 1997. The monitoring data were obtained in compliance with the Resource Conservation and Recovery Act (RCRA) post-closure permit for the Bear Creek Regime and U.S. Department of Energy (DOE) Order 5400.1, and are reported ixx Calendar Year 1997 Annual Groundwater A40nitoringReport for the Bear Creek Hydrogeolo@"c Regime at the US. Department ofEnergy Y-12 Plant, Oak Ridge, Tennessee (AJA Technical Services, Inc. 1998a). This report provides an evaluation of the monitoring data with respect to historical results for each sampling location, the regime-wide extent of groundwater and surface water contamination, and long-term concentration trends for selected groundwater and surface water contaminants.

  4. Comparing resolved-sideband cooling and measurement-based feedback cooling on an equal footing: analytical results in the regime of ground-state cooling

    E-Print Network [OSTI]

    Kurt Jacobs; Hendra I. Nurdin; Frederick W. Strauch; Matthew James

    2015-03-19T23:59:59.000Z

    We show that in the regime of ground-state cooling, simple expressions can be derived for the performance of resolved-sideband cooling --- an example of coherent feedback control --- and optimal linear measurement-based feedback cooling for a harmonic oscillator. These results are valid to leading order in the small parameters that define this regime. They provide insight into the origins of the limitations of coherent and measurement-based feedback for linear systems, and the relationship between them. These limitations are not fundamental bounds imposed by quantum mechanics, but are due to the fact that both cooling methods are restricted to use only a linear interaction with the resonator. We compare the performance of the two methods on an equal footing --- that is, for the same interaction strength --- and confirm that coherent feedback is able to make much better use of the linear interaction than measurement-based feedback. We find that this performance gap is caused not by the back-action noise of the measurement but by the projection noise. We also obtain simple expressions for the maximal cooling that can be obtained by both methods in this regime, optimized over the interaction strength.

  5. Three-dimensional assemblies built up by quantum dots in size-quantization regime: Band gap shifts due to size-distribution of cadmium selenide nanoparticles

    SciTech Connect (OSTI)

    Pejova, Biljana, E-mail: biljana@pmf.ukim.mk

    2013-11-15T23:59:59.000Z

    In the present study, it is predicted that the band gap energy of a three-dimensional quantum dot assembly exhibits a red shift when the dispersion of the crystal size distribution is enlarged, even at a fixed average value thereof. The effect is manifested when the size quantization regime in individual quantum dots constituting the assembly has been entered. Under the same conditions, the sub-band gap absorption tails are characterized with large Urbach energies, which could be one or two orders of magnitude larger than the value characteristic for the non-quantized case. - Graphical abstract: Band gap shifts due to size-distribution of nanoparticles in 3D assemblies built up by quantum dots in size-quantization regime. Display Omitted - Highlights: • Optical absorption of 3D QD assemblies in size-quantization regime is modeled. • Band gap energy of the QD solid depends on the size-distribution of the nanoparticles. • QD solid samples with same ?R? exhibit band gap shift depending on size distribution. • QD size distribution leads to large Urbach energies.

  6. Private governance in royalty collection Effectiveness and limitations in tracing GM soybean in Brazil

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    in Brazil Patricio. Mendez del Vilar1 , Carlos Magri Ferreira2 , Juliana Galvarros Bueno Lobo Ribeiro3, Brazil. 3 University of Brasilia, Brazil Summary This paper focuses on the emergence of an institutional innovation along with the diffusion of Genetically Modified Soybean in Brazil. It results in private

  7. SPR to Continue Royalty-in-Kind Fill Program | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM615_CostNSARDevelopmental AssignmentApril 2, 2015AwardsOctober 10, 2007 -

  8. SPR to Continue Royalty-in-Kind Fill Program | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM615_CostNSARDevelopmental AssignmentApril 2, 2015AwardsOctober 10, 2007

  9. Three Companies Awarded Contracts for Royalty-in-Kind Exchanges for the SPR

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2, 2015 - JanuaryTank 48HPublicforManagement and onRecoveryThomasDepartment|

  10. I.C. 47-1605 - Geothermal Resources - Leases--Rental and Royalty | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtel JumpCounty, Texas: EnergyHy9Moat ofEnergy Information ProofEnergy

  11. Three Companies Awarded Contracts for Royalty-in-Kind Exchanges for the SPR

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergyIssuesEnergy SolarRadioactive LiquidSavingsAugust 2011LimitDepartment

  12. SPR to Continue Royalty-in-Kind Fill Program | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, anEnergyDepartment ofNoneORDERNational WindSNRIncurredPoint

  13. Federal Oil and Gas Royalty Management Act of 1982 | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDIT REPORTEnergyFarms A S Jump to: navigation,FAFCOCommittee Act of

  14. Federal Oil and Gas Royalty Simplification and Fairness Act of 1996 | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 NoEurope BV JumpFederal Highway Administration Jump to:6

  15. A review of "The Making of the Jacobean Regime: James VI and I and the Government of England, 1603-1605." by Diana Newton

    E-Print Network [OSTI]

    Charles W. A. Prior

    2005-01-01T23:59:59.000Z

    REVIEWS 189 Diana Newton. The Making of the Jacobean Regime: James VI and I and the Government of England, 1603-1605. Woodbridge: The Boydell Press, 2005. x + 164 pp. $80.00. Review by CHARLES W. A. PRIOR, UNIVERSITY OF CAMBRIDGE. King James... VI and I has tended to suffer at the hands of historians. Described by a contemporary as the wisest fool in England, the impression that has come down though the centuries is of an unprepossessing closet homosexual with horrid table manners and a...

  16. Evaluation of calendar year 1996 groundwater and surface water quality data for the Chesnut Ridge Hydrogeologic Regime at the US Department of Energy Y-12 Plant, Oak Ridge, Tennessee

    SciTech Connect (OSTI)

    NONE

    1997-08-01T23:59:59.000Z

    This report presents an evaluation of the groundwater monitoring data obtained in the Chesnut Ridge Hydrogeologic Regime (Chesnut Ridge Regime) during calendar year (CY) 1996. The Chesnut Ridge Regime encompasses a section of Chesnut Ridge bordered by the US Department of Energy (DOE) Y-12 Plant in Bear Creek Valley (BCV) to the north, Scarboro Road to the east, Bethel Valley Road to the south, and an unnamed drainage basin southwest of the Y-12 Plant. Groundwater quality monitoring is performed at hazardous and nonhazardous waste management facilities in the regime under the auspices of the Y-12 Plant Groundwater Protection Program (GWPP). The CY 1996 monitoring data are presented in Calendar Year 1996 Annual Groundwater Monitoring Report for the Chesnut Ridge Hydrogeologic Regime at the US Department of Energy Y-12 Plant, Oak Ridge, Tennessee, along with the required evaluations of applicable site-specific monitoring data (AJA Technical Services, Inc. 1997a). This report provides additional evaluation of the CY 1996 data with an emphasis on regime-wide groundwater geochemistry and long-term concentration trends of regulated and non-regulated monitoring parameters.

  17. Evaluation of Calendar Year 1996 groundwater and surface water quality data for the Upper East Fork Poplar Creek Hydrogeologic Regime at the US Department of Energy Y-12 Plant, Oak Ridge, Tennessee

    SciTech Connect (OSTI)

    NONE

    1997-09-01T23:59:59.000Z

    This report presents an evaluation of the groundwater monitoring data obtained in the Upper East Fork Poplar Creek Hydrogeologic Regime (East Fork Regime) during calendar year (CY) 1996. The East Fork Regime encompasses several confirmed and suspected sources of groundwater contamination within industrialized areas of the US Department of Energy (DOE) Y-12 Plant in Bear Creek Valley (BCV) southeast of Oak Ridge, Tennessee. The CY 1996 groundwater and surface water monitoring data are presented in Calendar Year 1996 Annual Groundwater Monitoring Report for the Upper East Fork Poplar Creek Hydrogeologic Regime at the US Department of Energy Y-12 Plant, Oak Ridge, Tennessee, along with the required data evaluations specified in the Resource Conservation and Recovery Act (RCRA) post-closure permit for the East Fork Regime. This report provides additional evaluation of the CY 1996 groundwater and surface water monitoring data with an emphasis on regime-wide groundwater contamination and long-term concentration trends for regulated and non-regulated monitoring parameters.

  18. Evaluation of Calendar Year 1996 groundwater and surface water quality data for the Bear Creek Hydrogeologic Regime at the US Department of Energy Y-12 Plant, Oak Ridge, Tennessee

    SciTech Connect (OSTI)

    NONE

    1997-08-01T23:59:59.000Z

    This report presents an evaluation of the groundwater monitoring data obtained in the Bear Creek Hydrogeologic Regime (Bear Creek Regime) during calendar year (CY) 1996. The monitoring data were collected for the multiple programmatic purposes of the Y-12 Plant Groundwater Protection Program (GWPP) and have been reported in Calendar Year 1996 Annual Groundwater Monitoring Report for the Bear Creek Hydrogeologic Regime at the US Department of Energy Y-12 Plant, Oak Ridge, Tennessee. The Annual Monitoring report presents only the results of the monitoring data evaluations required for waste management sites addressed under the Resource Conservation and Recovery Act (RCRA) post-closure permit for the Bear Creek Regime. The Annual Monitoring Report also serves as a consolidated reference for the groundwater and surface water monitoring data obtained throughout the Bear Creek Regime under the auspices of the Y-12 GWPP. This report provides an evaluation of the CY 1996 monitoring data with an emphasis on regime-wide groundwater and surface water quality and long-term concentration trends of regulated and non-regulated monitoring parameters.

  19. Wave packet autocorrelation functions for quantum hard-disk and hard-sphere billiards in the high-energy, diffraction regime

    E-Print Network [OSTI]

    Arseni Goussev; J. R. Dorfman

    2006-07-18T23:59:59.000Z

    We consider the time evolution of a wave packet representing a quantum particle moving in a geometrically open billiard that consists of a number of fixed hard-disk or hard-sphere scatterers. Using the technique of multiple collision expansions we provide a first-principle analytical calculation of the time-dependent autocorrelation function for the wave packet in the high-energy diffraction regime, in which the particle's de Broglie wave length, while being small compared to the size of the scatterers, is large enough to prevent the formation of geometric shadow over distances of the order of the particle's free flight path. The hard-disk or hard-sphere scattering system must be sufficiently dilute in order for this high-energy diffraction regime to be achievable. Apart from the overall exponential decay, the autocorrelation function exhibits a generally complicated sequence of relatively strong peaks corresponding to partial revivals of the wave packet. Both the exponential decay (or escape) rate and the revival peak structure are predominantly determined by the underlying classical dynamics. A relation between the escape rate, and the Lyapunov exponents and Kolmogorov-Sinai entropy of the counterpart classical system, previously known for hard-disk billiards, is strengthened by generalization to three spatial dimensions. The results of the quantum mechanical calculation of the time-dependent autocorrelation function agree with predictions of the semiclassical periodic orbit theory.

  20. On the bipolar resistive-switching characteristics of Al?O?- and HfO?-based memory cells operated in the soft-breakdown regime

    SciTech Connect (OSTI)

    Goux, L., E-mail: gouxl@imec.be; Fantini, A.; Nigon, R.; Strangio, S.; Degraeve, R.; Kar, G.; Chen, Y. Y.; Jurczak, M. [imec, Kapeldreef 75, B-3001 Leuven (Belgium); Raghavan, N. [imec, Kapeldreef 75, B-3001 Leuven (Belgium); KU Leuven, Dept. Elektrotechniek ESAT-MICAS, B-3001 Leuven (Belgium); De Stefano, F.; Afanas'ev, V. V. [KU Leuven, Department of Physics and Astronomy, B-3001 Leuven (Belgium)

    2014-10-07T23:59:59.000Z

    In this article, we investigate extensively the bipolar-switching properties of Al?O?- and HfO?-based resistive-switching memory cells operated at low current down to <1 ?A. We show that the switching characteristics differ considerably from those typically reported for larger current range (>15 ?A), which we relate as intrinsic to soft-breakdown (SBD) regime. We evidence a larger impact of the used switching-oxide in this current range, due to lower density of oxygen-vacancy (V{sub o}) defects in the SBD regime. In this respect, deep resetting and large memory window may be achieved using the stoichiometric Al?O? material due to efficient V{sub o} annihilation, although no complete erasure of the conductive-filament (CF) is obtained. We finally emphasize that the conduction may be described by a quantum point-contact (QPC) model down to very low current level where only a few V{sub o} defects compose the QPC constriction. The large switching variability inherent to this latter aspect is mitigated by CF shape tuning through adequate engineering of an Al?O?\\HfO? bilayer.

  1. Simulations of Variable Bottomhole Pressure Regimes to Improve Production from the Double-Unit Mount Elbert, Milne Point Unit, North Slope Alaska Hydrate Deposit

    SciTech Connect (OSTI)

    Myshakin, Evgeniy; Anderson, Brian; Rose, Kelly; Boswell, Ray

    2011-01-01T23:59:59.000Z

    Gas production was predicted from a reservoir model based on the Mount Elbert gas hydrate accumulation located on the Alaska North slope at various simulator submodels and production scenarios. Log, core, and fluid measurements were used to provide a comprehensive reservoir description. These data were incorporated with experimentally derived saturations, porosities, permeability values, parameters for capillary pressure, and relative permeability functions. The modeled reservoir exposed to depressurization at a constant bottomhole pressure (2.7 MPa) has shown limited production potential due to its low temperature profile. To improve production the bottomhole pressure was allowed to vary from 2.7 (above the quadruple point) to 2.0 MPa over a 15-year period. The results indicate that gas production was nearly doubled in comparison with a constant-pressure regime. Extensive ice formation and hydrate reformation that could severely hinder gas production were avoided in the variable-pressure regime system. A use of permeability variation coupled with porosity change is shown to be crucial to predict those phenomena at a reservoir scale.

  2. Minutes of the Memorial University & Memorial University of Newfoundland Faculty Association

    E-Print Network [OSTI]

    deYoung, Brad

    ) Asbestos Abatement Program ­ There was discussion about a Smart classroom in the Science building not being the ergonomist as to whether they were consulted about the new Genetic building and the new residence buildings using wireless and if there is any health concerns from long-term exposure. ii. Dogs in Buildings

  3. Batch and Kinetic Studies of ni adsorption on Highly Humified newfoundland Peat

    E-Print Network [OSTI]

    Coles, Cynthia

    was air dried and sieved and fractions 850 µm constituting about 90% of the peat were separated and used. Analytical grade Nickel (II) nitrate hexahydrate (Anachemia Chemicals) were diluted in distilled water.4, 0.84, and 1.6g air dried saprist peat. Kinetic tests were performed in 500 ml plastic serum bottles

  4. The Newfoundland Cod Stock Collapse: A Review and Analysis of Social Factors

    E-Print Network [OSTI]

    Mason, Fred

    2002-01-01T23:59:59.000Z

    S151-S156. Maguire, J. J. , Neis, B. , & Sinclair, P. R. (of Canadian Studies, 23(1-2), Neis, B. , Schneider, D. C. ,Alternatives, 21(1), 18-24. Neis, B. (2000). In the eye of

  5. Minutes of the Memorial University & Memorial University of Newfoundland Faculty Association

    E-Print Network [OSTI]

    deYoung, Brad

    compliance. Also, to assess how Bio-hazard protocols are #12;2 handled. It was suggested that the committee for the placement of the information. c) Waste Disposal ­ the Department of Health and Safety are in the process

  6. Minutes of the Memorial University & Memorial University of Newfoundland Faculty Association

    E-Print Network [OSTI]

    deYoung, Brad

    to another lab and also the outside ventilation factored into the problem. 4. New Business i) SN-4036 Issues in Room SN-1069 resulted in a new lab for the ASM due to the fact that the ventilation was connected

  7. IODP Expedition 342: Paleogene Newfoundland Sediment Drifts Week 1 Report (1-9 June 2012)

    E-Print Network [OSTI]

    , the vessel arrived at the first expedition location to perform engineering qualification tests on the Motion equipment inside the BHA. At 0800 h the motor vessel North Star arrived on location and was secured of the JOIDES Resolution at 0828 h. After tripping out of the hole, the test equipment was removed from the BHA

  8. Comparison of Nucleon Form Factors from Lattice QCD Against the Light Front Cloudy Bag Model and Extrapolation to the Physical Mass Regime

    E-Print Network [OSTI]

    Hrayr H. Matevosyan; Gerald A. Miller; Anthony W. Thomas

    2005-05-25T23:59:59.000Z

    We explore the possibility of extrapolating state of the art lattice QCD calculations of nucleon form factors to the physical regime. We find that the lattice results can be reproduced using the Light Front Cloudy Bag Model by letting its parameters be analytic functions of the quark mass. We then use the model to extend the lattice calculations to large values of Q^{2} of interest to current and planned experiments. These functions are also used to define extrapolations to the physical value of the pion mass, thereby allowing us to study how the predicted zero in G_{E}(Q^{2})/G_{M}(Q^{2}) varies as a function of quark mass.

  9. Single shot spatial and temporal coherence properties of the SLAC linac coherent light source in the hard x-ray regime

    SciTech Connect (OSTI)

    Gutt, C.; Wochner, P.; Fischer, B.; Conrad, H.; Castro-Colin, M.; Lee, S.; Lehmkuhler, F.; Steinke, I.; Sprung, M.; Roseker, W.; Zhu, D.; Lemke, H.; Bogle, S.; Fuoss, P. H.; Stephenson, G. B.; Cammarata, M.; Fritz, D. M.; Robert, A.; Grubel, G. (Materials Science Division); (Deutsches Elektronen-Synchrotron); (Max-Planck-Institut fur Intelligene Systeme); (LCLS, SLAC Nat. Accelerator Lab.)

    2012-01-01T23:59:59.000Z

    We measured the transverse and longitudinal coherence properties of the Linac Coherent Light Source (LCLS) at SLAC in the hard x-ray regime at 9 keV photon energy on a single shot basis. Speckle patterns recorded in the forward direction from colloidal nanoparticles yielded the transverse coherence properties of the focused LCLS beam. Speckle patterns from a gold nanopowder recorded with atomic resolution allowed us to measure the shot-to-shot variations of the spectral properties of the x-ray beam. The focused beam is in the transverse direction fully coherent with a mode number close to 1. The average number of longitudinal modes behind the Si(111) monochromator is about 14.5 and the average coherence time {tau}{sub c} = (2.0 {+-} 1.0) fs. The data suggest a mean x-ray pulse duration of (29 {+-} 14) fs behind the monochromator for (100 {+-} 14) fs long electron pulses.

  10. Energy- and flux-budget (EFB) turbulence closure model for the stably stratified flows. Part I: Steady-state, homogeneous regimes

    E-Print Network [OSTI]

    S. S. Zilitinkevich; T. Elperin; N. Kleeorin; I. Rogachevskii

    2007-02-19T23:59:59.000Z

    We propose a new turbulence closure model based on the budget equations for the key second moments: turbulent kinetic and potential energies: TKE and TPE (comprising the turbulent total energy: TTE = TKE + TPE) and vertical turbulent fluxes of momentum and buoyancy (proportional to potential temperature). Besides the concept of TTE, we take into account the non-gradient correction to the traditional buoyancy flux formulation. The proposed model grants the existence of turbulence at any gradient Richardson number, Ri. Instead of its critical value separating - as usually assumed - the turbulent and the laminar regimes, it reveals a transition interval, 0.11. Predictions from this model are consistent with available data from atmospheric and lab experiments, direct numerical simulation (DNS) and large-eddy simulation (LES).

  11. Insulating state of granular superconductors in a strong-coupling regime I. S. Beloborodov,1 Ya. V. Fominov,1,2 A. V. Lopatin,1 and V. M. Vinokur1

    E-Print Network [OSTI]

    Fominov, Yakov

    Insulating state of granular superconductors in a strong-coupling regime I. S. Beloborodov,1 Ya. V-field-induced insulating state in a two-dimensional granular superconductor with relatively strong intergranular coupling the superconductor-insulator transi- tion, and a reentrant drop upon further increase of magnetic field. The magnetic

  12. Optimal transport of ultracold atoms in the non-adiabatic regime A. Couvert 1 , T. Kawalec 1 , G. Reinaudi 1 and D. Gu ery-Odelin 1;2

    E-Print Network [OSTI]

    Recanati, Catherine

    accomplished with ultracold atoms by moving slowly optical tweezers [3]. Transport of cold packets of atoms]. Macroscopic transport of cold atoms has been demon- strated using several di#11;erent con#12;gurations. One]. In this letter we report the transport of a cold atom cloud in the non-adiabatic regime with a high degree

  13. Natural alteration in the cooling Topopah Spring tuff, Yucca Mountain, Nevada, as an analog to a waste-repository hydrothermal regime

    SciTech Connect (OSTI)

    Levy, S.; Valentine, G.

    1993-11-01T23:59:59.000Z

    Studies of natural hydrothermal alteration in the cooling Topopah Spring tuff suggest a useful ``self-analog`` predictor of fluid-rock interactions within the thermal regime imposed by a potential nuclear waste repository at Yucca Mountain. This tuff has the advantages of representative rock types and appropriate spatial distribution of lithologic features. The cooling history of the tuff spanned the temperature range for any proposed repository thermal load, and the unsaturated-zone hydrologic conditions of the natural alteration would have been similar to existing conditions. A site at northeastern Yucca Mountain, with a prominent vertical fracture zone, has been selected for natural analog studies. The cooling of the tuff and the movement of water in the fracture zone and adjacent matrix will be modeled with the finite element code FEHNM, capable of simulating flow through porous and fractured media using a dual porosity-dual permeability continuum model, with heat transfer and two-phase (vapor and liquid) processes fully accounted for.

  14. Microgravity Flow Regime Transition Modeling 

    E-Print Network [OSTI]

    Shephard, Adam M.

    2010-07-14T23:59:59.000Z

    ................... 18 14 Colin and Fabre (1995) 0.0190 m diameter air-water data set ................... 18 15 Comparison of the Dukler et al. (1988) and Bousman (1994) 0.0127 m diameter air-water system data sets... ........................................................................................................ 67 33 Colin and Fabre (1995) 0.0190 m diameter air-water data set with models ........................................................................................................ 68 34 Dukler et al. (1988) 0.0127 m diameter air-water data...

  15. Superior reclama regime de exceo

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    - tre as instituições de Ensino Superior e o Governo. Reito- res e presidentes de institu- tos de Estado respondeu afirmativamen- te, referindo que as contas seriam feitas e os orçamen- tos das

  16. TC_CLOUD_REGIME.cdr

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our InstagramStructureProposed Action(InsertAbout theSystems3, Revision

  17. Groundwater Protection Program Calendar Year 1998 Evaluation of Groundwater and Surface Water Quality Data for the Bear Creek Hydrogeologic Regime at the U.S. Department of Energy Y-12 Plant, Oak Ridge, Tennessee

    SciTech Connect (OSTI)

    None

    1999-09-01T23:59:59.000Z

    This report presents an evaluation of the water quality monitoring data obtained by the Y-12 Plant Groundwater Protection Program (GWPP) in the Bear Creek Hydrogeologic Regime (Bear Creek Regime) during calendar year (CY) 1998. The Bear Creek Regime contains many confirmed and potential sources of groundwater and surface water contamination associated with the U.S. Department of Energy (DOE) Oak Ridge Y-12 Plant. Applicable provisions of DOE Order 5400.1A - General Environmental Protection Program - require evaluation of groundwater and surface water quality near the Y-12 Plant to: (1) gauge groundwater quality in areas that are, or could be, affected by plant operations, (2) determine the quality of surface water and groundwater where contaminants are most likely to migrate beyond the DOE Oak Ridge Reservation (ORR) property line, and (3) identify and characterize long-term trends in groundwater quality. The following sections of this report contain relevant background information (Section 2.0); describe the results of the respective data evaluations required under DOE Order 5400.1A (Section 3.0); summarize significant findings of each evaluation (Section 4.0); and list the technical reports and regulatory documents cited for more detailed information (Section 5.0). All of the figures (maps and trend graphs) and data tables referenced in each section are presented in Appendix A and Appendix B, respectively.

  18. Final Report for "Interdecadal climate regime transition and its interaction with climate change in CMIP5 simulations" (DOE Grant DE-SC0005344)

    SciTech Connect (OSTI)

    Huang, Huei-Ping [Arizona State University] [Arizona State University

    2013-12-10T23:59:59.000Z

    Large-amplitude interdecadal shifts of atmospheric and ocean states from one climate regime to another have been observed several times in the 20th century. They include the 1976 transition from cool tropical Pacific SST to warm tropical SST and the post-1998 reversal back to a cooler state. The transition events affect both atmospheric circulation and global water cycle. Because on decadal-to-interdecadal time scale the amplitude of the climate shift is comparable to the trend induced by anthropogenic greenhouse gas forcing, understanding the structure, statistics, and predictability of those events is critical for near-term climate projection. This study analyzed the statistics and predictability of the transition events in the CMIP5 climate model simulations by using a set of climate indices, including atmospheric angular momentum (AAM) and regionally integrated hydrological variables. A significant improvement in the simulated 20th century climatology of AAM is found in CMIP5, compared to earlier simulations in CMIP3. Nevertheless, the improvement in the simulated decadal-to-interdecadal variability in AAM is relatively minor. Systematic biases in the regional water cycle that exist in CMIP3 are found to also exist in CMIP5, although with slight improvements in the latter. Climate shift events with an amplitude comparable to the observed 1976 or 1998 event are found to rarely occur in the CMIP5 20th century simulations. In the 21st century simulations with increasing GHG concentration, the upward trend superimposed to natural variability slightly increases the frequency of occurrences of the large-amplitude events. Even so, 1976-like events remain rare in those runs. In an additional analysis of the CMIP5 Decadal Runs for the 20th century, it is found that the decadal predictability in terms of AAM is generally weak, with useful predictability mainly restricted to within ENSO time scale. Overall, this study showed promises in the improved performance of CMIP5 in some aspects but also revealed the relatively limited ability for the models to capture sharp climate shift events.

  19. Encyclopedia of Energy, Volume 1, pp 605616. Elsevier. 2004. Author nonexclusive, royalty-free copyright 1 Commercial Sector and

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    (equals about 1055 Joule). commercial sector The portion of buildings in a nation or the world including of a building. energy performance An empirical value indicating the energy efficiency of one commercial building compared to other, usually similar, commercial buildings. Energy Star rating system Energy performance

  20. NECEC 2008, ST. JOHN'S NEWFOUNDLAND, THURSDAY NOV 6, 2008 1 Abstract--Micro wind turbines are being used with some

    E-Print Network [OSTI]

    Bruneau, Steve

    . The specific unit tested, SouthWest Windpower's Whisper 100 (900 Watts, 2.1m diameter), matches the brand of the nacelle due to the position of the internal casting/rubber brake pad relative to the furl pivot and rotor rotor and the furl pivot so that impact and quasi-steady loads on the nacelle body are exacerbated

  1. Abstract, Joint Annual Meeting of the Geological Association of Canada and Mineralogical Association of Canada, St John's, Newfoundland, May 2012

    E-Print Network [OSTI]

    SANDSTONES OVERLYING THE CONCEALED PHOENIX URANIUM DEPOSIT, ATHABASCA BASIN, CANADA M. Power1 , K. Hattori1's Phoenix uranium deposit, is situated near the southeastern rim of the Athabasca Basin in northern expression in surface media provides excellent exploration tools for deeply seated unconformity

  2. Faculty of Engineering and Applied Science, Memorial University of Newfoundland ENGI 9601; ENVS 6004: Environmental Pollution and Mitigation

    E-Print Network [OSTI]

    Coles, Cynthia

    energy and so that EV batteries can be used for electricity storage by employing smart grids. Use light devices are permitted in this exam. 1) How can cities be made more sustainable? Organize your answer under expensive to operate in the long term and can easily run on electricity. Make cities more pedestrian

  3. Child/Adolescent Anxiety Multimodal Study (CAMS): rationale, design, and methods

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    by JAZZ Pharmaceuticals, Solvay Pharmaceuticals Inc, andat a meeting sponsored by Solvay and receives royalties for

  4. Proposed modifications to the RCRA post-closure permit for the Upper East Fork Poplar Creek Hydrogeologic Regime at the U.S. Department of Energy Y-12 Plant, Oak Ridge, Tennessee

    SciTech Connect (OSTI)

    NONE

    1997-05-01T23:59:59.000Z

    This report presents proposed modifications to the Resource Conservation and Recovery Act (RCRA) Post-Closure Permit (PCP) for the Upper East Fork Poplar Creek Hydrogeologic Regime (permit number TNHW-088, EPA ID No. TN3 89 009 0001). The modifications are proposed to: (1) revise the current text for two of the Permit Conditions included in Permit Section II - General Facility Conditions, and (2) update the PCP with revised versions of the Y-12 Plant Groundwater Protection Program (GWPP) technical field procedures included in several of the Permit Attachments. The updated field procedures and editorial revisions are Class 1 permit modifications, as specified in Title 40, Code of Federal Regulations (CFR) {section}270.42; Appendix I - Classification of Permit Modifications. These modifications are summarized below.

  5. Elimination of columnar microstructure in N-face InAlN, lattice-matched to GaN, grown by plasma-assisted molecular beam epitaxy in the N-rich regime

    SciTech Connect (OSTI)

    Ahmadi, Elaheh; Wienecke, Steven; Keller, Stacia; Mishra, Umesh K. [Department of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106 (United States); Shivaraman, Ravi; Wu, Feng; Kaun, Stephen W.; Speck, James S. [Materials Department, University of California, Santa Barbara, California 93106 (United States)

    2014-02-17T23:59:59.000Z

    The microstructure of N-face InAlN layers, lattice-matched to GaN, was investigated by scanning transmission electron microscopy and atom probe tomography. These layers were grown by plasma-assisted molecular beam epitaxy (PAMBE) in the N-rich regime. Microstructural analysis shows an absence of the lateral composition modulation that was previously observed in InAlN films grown by PAMBE. A room temperature two-dimensional electron gas (2DEG) mobility of 1100 cm{sup 2}/V s and 2DEG sheet charge density of 1.9?×?10{sup 13}?cm{sup ?2} was measured for N-face GaN/AlN/GaN/InAlN high-electron-mobility transistors with lattice-matched InAlN back barriers.

  6. Inferential Challenges in Constructing Dynamic Treatment Regimes

    E-Print Network [OSTI]

    Murphy, Susan A.

    individual O1,a1,O2,a2,...,OT,aT,OT+1 Ot: Observation available at the tth stage at: Treatment / action at the tth stage Ht = {O1,a1,O2,...,at-1,Ot}: History available at the tth stage dt(Ht): Decision rule with training agents (e.g., a robot) to learn and act in an unknown environment. Both are multi-stage decision

  7. Quantum plasma effects in the classical regime

    E-Print Network [OSTI]

    G. Brodin; M. Marklund; G. Manfredi

    2008-02-01T23:59:59.000Z

    For quantum effects to be significant in plasmas it is often assumed that the temperature over density ratio must be small. In this paper we challenge this assumption by considering the contribution to the dynamics from the electron spin properties. As a starting point we consider a multicomponent plasma model, where electrons with spin up and spin down are regarded as different fluids. By studying the propagation of Alfv\\'{e}n wave solitons we demonstrate that quantum effects can survive in a relatively high-temperature plasma. The consequences of our results are discussed.

  8. Thermal machines beyond the weak coupling regime

    E-Print Network [OSTI]

    R. Gallego; A. Riera; J. Eisert

    2014-11-13T23:59:59.000Z

    How much work can be extracted from a heat bath using a thermal machine? The study of this question has a very long tradition in statistical physics in the weak-coupling limit, applied to macroscopic systems. However, the assumption that thermal heat baths remain uncorrelated with physical systems at hand is less reasonable on the nano-scale and in the quantum setting. In this work, we establish a framework of work extraction in the presence of quantum correlations. We show in a mathematically rigorous and quantitative fashion that quantum correlations and entanglement emerge as a limitation to work extraction compared to what would be allowed by the second law of thermodynamics. At the heart of the approach are operations that capture naturally non-equilibrium dynamics encountered when putting physical systems into contact with each other. We discuss various limits that relate to known results and put our work into context of approaches to finite-time quantum thermodynamics.

  9. End of the Concessionary Regime in Mexico

    E-Print Network [OSTI]

    Pulido, Mario

    2015-01-01T23:59:59.000Z

    of several oil concessions in Mexico. Among the companiesoil companies. I move on to discuss that shortly after the nationalization, Mexico

  10. Coulomb Distortion in the Inelastic Regime

    SciTech Connect (OSTI)

    Patricia Solvignon, Dave Gaskell, John Arrington

    2009-09-01T23:59:59.000Z

    The Coulomb distortion effects have been for a long time neglected in deep inelastic scattering for the good reason that the incident energies were very high. But for energies in the range of earlier data from SLAC or at JLab, the Coulomb distortion could have the potential consequence of affecting the A-dependence of the EMC effect and of the longitudinal to transverse virtual photon absorption cross section ratio $R(x,Q^2)$.

  11. Coulomb distortion in the inelastic regime

    SciTech Connect (OSTI)

    Solvignon, P.; Arrington, J. [Physics Division, Argonne National Laboratory, Argonne, IL 60439 (United States); Gaskell, D. [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States)

    2009-09-02T23:59:59.000Z

    The Coulomb distortion effects have been for a long time neglected in deep inelastic scattering for the good reason that the incident energies were very high. But for energies in the range of earlier data from SLAC or at JLab, the Coulomb distortion could have the potential consequence of affecting the A-dependence of the EMC effect and of the longitudinal to transverse virtual photon absorption cross section ratio R(x,Q{sup 2}).

  12. Coulomb distortion in the inelastic regime.

    SciTech Connect (OSTI)

    Solvignon, P.; Gaskell, D.; Arrington, J.; Physics; Thomas Jefferson National Accelerator Facility

    2009-01-01T23:59:59.000Z

    The Coulomb distortion effects have been for a long time neglected in deep inelastic scattering for the good reason that the incident energies were very high. But for energies in the range of earlier data from SLAC or at JLab, the Coulomb distortion could have the potential consequence of affecting the A-dependence of the EMC effect and of the longitudinal to transverse virtual photon absorption cross section ratio R(x,Q{sup 2}).

  13. Post 2012 Climate Regime | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroupPerfectenergyInformation to ReducePoseidon Solar Services PvtPost

  14. High current regimes in RFX-mod

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football High School football Fancy footwork

  15. FOREIGN VISITOR SUPPLEMENT Departments should complete this form and submit it with or attach it to any Personal Service Contract,

    E-Print Network [OSTI]

    Papautsky, Ian

    it to any Personal Service Contract, Non-UC-Student Scholarship/Fellowship form or Royalty Payment form accompanies a: Personal Service Contract Non-UC-Student Schol. / Fel. Royalty Payment Payee Name Social

  16. Microsoft Word - Final Report 4-26-05.doc

    Office of Environmental Management (EM)

    Management Controls over Patent and Royalty Income at Ames Laboratory OAS-M-05-05 May 2005 -2- * Combine patent and royalty revenues with monies earned by other entities in a...

  17. The Politics of Revenue-Raising Tax Reform in Latin America

    E-Print Network [OSTI]

    Fairfield, Tasha

    2010-01-01T23:59:59.000Z

    spending-side benefits. The proposal destined revenue from the royalty to a new research and development

  18. An international comparison of Scotland and Newfoundland's offshore marine industries: exploring the connections among commercial fisheries and offshore oil and gas 

    E-Print Network [OSTI]

    Lowitt, Kerrie

    The development of the offshore oil industry in the past fifty years has created heightened interactions at sea, where traditionally fishing activities dominated. This study explores the nature of liaison bodies that have formed between...

  19. Making Memorial University's Policy Database and Website work for you The policy website at Memorial University of Newfoundland contains a database of policy and procedure

    E-Print Network [OSTI]

    Oyet, Alwell

    and press Enter. The Search looks within the Policy title, the Policy Purpose, Policy Scope and all the text, but which may help locate a policy. The search uses both the index of terms as well as string matching. You of browse and search features to help you get the most out of the site. Its navigation is designed to rely

  20. The Organization and Dynamics of Clustering and Innovation in the ocean technology sector in Newfoundland and Labrador and the St. John's city-region

    E-Print Network [OSTI]

    deYoung, Brad

    outwardly organized, that is, toward other firms/organizations outside the region in terms of buyer/supplier') is occurring within the cluster. · Memorial University (MUN) plays a substantial role in buyer/supplier networks and within collaboration networks within the cluster. · The network of buyer/supplier

  1. Ability of the Geo-environment and Oceans to Support the Global Population

    E-Print Network [OSTI]

    Coles, Cynthia

    it has to be expected that even the use of relatively renewable energy will be associated with some of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, Newfoundland, Canada

  2. Sustainable Living Guide This sustainable living guide is the product of a class project for Geography 6250 at Memorial

    E-Print Network [OSTI]

    Oyet, Alwell

    St. John's Sustainable Living Guide #12;This sustainable living guide is the product of a class's Sustainable Living Guide. Memorial University of Newfoundland, St. John's, Newfoundland, Canada, 40 p. Any...........................................................................................................2-4 Sustainable Home Living

  3. Physics and Physical Oceanography Data Report 2000-2 Tow-Yo and Temperature Data from Trinity Bay,

    E-Print Network [OSTI]

    deYoung, Brad

    Physics and Physical Oceanography Data Report 2000-2 Tow-Yo and Temperature Data from Trinity Bay Oeanography Memorial University of Newfoundland St. John's, Newfoundland A1B 3X7 #12;ii Abstract Trinity Bay

  4. Natural gas: Governments and oil companies in the Third World

    SciTech Connect (OSTI)

    Davidson, A.; Hurst, C.; Mabro, R.

    1988-01-01T23:59:59.000Z

    It is asserted that oil companies claim to be generally receptive to gas development proposals; however, the lack of potential markets for gas, problems of foreign exchange convertibility, and lack of a legal framework often hinders their engagement. Governments, on the other hand, need to secure domestic energy supply and, if possible, gain some export earnings or royalties. An extensive discussion on the principles of pricing and fiscal regimes, potential points of disagreement is provided. A course of action is outlined from the managerial point of view to circumvent the most common pitfalls in planning and financing a gas project. Eight very detailed case studies are presented for Argentina, Egypt, Malaysia, Nigeria, Pakistan, Tanzania, Tunisia and Thailand.

  5. The Operating Regime Approach to Nonlinear Modelling and Control

    E-Print Network [OSTI]

    Johansen, T.A.; Murray-Smith, R.

    Johansen,T.A. Murray-Smith,R. Multiple Model Approaches to Modelling and Control pp 3-72 Taylor and Francis

  6. Heat Flow Determinations and Implied Thermal Regime of the Coso...

    Open Energy Info (EERE)

    altered rocks. Abundant Pleistocene volcanic rocks, including a cluster of thirty-seven rhyolite domes, occupy a north-trending structural and topographic ridge near the...

  7. Heat flow determinations and implied thermal regime of the Coso...

    Open Energy Info (EERE)

    altered rocks. Abundant Pleistocene volcanic rocks, including a cluster of thirty-seven rhyolite domes, occupy a north-trending structural and topographic ridge near the...

  8. ECONOMIC REFORM AND COMMUNIST REGIME SURVIVABILTY: PAST, PRESENT, AND FUTURE

    E-Print Network [OSTI]

    Nelson, John

    2006-08-16T23:59:59.000Z

    of their respective Politburos and may be described as not only ‘surviving’ but thriving, experiencing economic stability and enjoying high rates of growth. This study examines the ramifications of economic and political reform policies implemented by four collapsed...

  9. CSEM WP 128 Technology Adoption and Regulatory Regimes

    E-Print Network [OSTI]

    California at Berkeley. University of

    " of the electricity industry in the U.S. has led to a stronger incentive for firms to adopt large capacity, heavy

  10. Spin dynamics in the strong spin-orbit coupling regime

    E-Print Network [OSTI]

    Liu, Xin; Liu, Xiong-Jun; Sinova, Jairo.

    2011-01-01T23:59:59.000Z

    direction is constructed by the superposition of the two electrons with wave vectors k and k + q. In this case, the spin precession frequency will be#15;1(2) #15; #15;0(1? qQ ), where Q = 2m?1. damped oscillatory modes in the clean system corresponding... mode is zero for all of the electron momentum k. On the 035318-4 SPIN DYNAMICS IN THE STRONG SPIN-ORBIT . . . PHYSICAL REVIEW B 84, 035318 (2011) 0 0.5 1 1.5 2 0.2 0.4 0.6 0.8 1 q/Q (i R e Im ? ? ) ?so? = 0.4 ?so? = 0.5 ?so? = 0.6 ?so...

  11. agglomeration regime maps: Topics by E-print Network

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

    intermonomer potential. The morphology of generated clusters is analyzed through their fractal dimension df and the cluster coordination number. The time evolution of the...

  12. anisotropic scattering regimes: Topics by E-print Network

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

    of the second kind. Based on the summation algorithm of a set of extended signed Stirling number identities, we show that all four ratios calculated previously by the method...

  13. Stretch Efficiency for Combustion Engines: Exploiting New Combustion Regimes

    Broader source: Energy.gov [DOE]

    2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

  14. Using Biofuel Tracers to Study Alternative Combustion Regimes

    E-Print Network [OSTI]

    Mack, John Hunter; Flowers, Daniel L.; Buchholz, Bruce A.; Dibble, Robert W.

    2006-01-01T23:59:59.000Z

    1979. J.B. Heywood, Internal Combustion Engine Fundamentals.Ignition Engine with Optimal Combustion Control. ” US PatentIntroduction to Internal Combustion Engines (3rd Edition).

  15. Understanding and Controlling Regime Switching in Molecular Diffusion

    E-Print Network [OSTI]

    S. Hallerberg; A. S. de Wijn

    2014-11-05T23:59:59.000Z

    Diffusion can be strongly affected by ballistic flights (long jumps) as well as long-lived sticking trajectories (long sticks). Using statistical inference techniques in the spirit of Granger causality, we investigate the appearance of long jumps and sticks in molecular-dynamics simulations of diffusion in a prototype system, a benzene molecule on a graphite substrate. We find that specific fluctuations in certain, but not all, internal degrees of freedom of the molecule can be linked to either long jumps or sticks. Furthermore, by changing the prevalence of these predictors with an outside influence, the diffusion of the molecule can be controlled. The approach presented in this proof of concept study is very generic, and can be applied to larger and more complex molecules. Additionally, the predictor variables can be chosen in a general way so as to be accessible in experiments, making the method feasible for control of diffusion in applications. Our results also demonstrate that data-mining techniques can be used to investigate the phase-space structure of high-dimensional nonlinear dynamical systems.

  16. Triple-decker: Interfacing atomistic-mesoscopic-continuum flow regimes

    SciTech Connect (OSTI)

    Fedosov, Dmitry A. [Division of Applied Mathematics, Brown University, 182 George St., Box F, Providence, RI 02912 (United States); Karniadakis, George Em [Division of Applied Mathematics, Brown University, 182 George St., Box F, Providence, RI 02912 (United States)], E-mail: gk@dam.brown.edu

    2009-03-01T23:59:59.000Z

    Multiscale flow phenomena in microfluidic and biomedical applications require the use of heterogeneous modeling approaches. In this paper we present a hybrid method based on coupling the Molecular Dynamics (MD) method, the Dissipative Particle Dynamics (DPD) method, and the incompressible Navier-Stokes (NS) equations. MD, DPD, and NS are formulated in separate subdomains and are coupled via an overlapping region by communicating state information at the subdomain boundaries. Imposition of boundary conditions in the MD and DPD systems involves particle insertion and deletion, specular wall reflection and body force terms. The latter includes a boundary pressure force in order to minimize near-boundary density fluctuations, and an adaptive shear force which enforces the tangential velocity component of boundary conditions. The triple-decker algorithm is verified for prototype flows, including simple and multi-layer fluids (Couette, Poiseuille, and lid-driven cavity), using highly accurate reference solutions. A zero-thickness interface is also possible if it is aligned with the flow streamlines.

  17. Gasoline-Like Fuel Effects on Advanced Combustion Regimes

    Broader source: Energy.gov [DOE]

    2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

  18. A Moment Approach to Pricing Exotic Options Under Regime ...

    E-Print Network [OSTI]

    2011-07-26T23:59:59.000Z

    Jul 26, 2011 ... reduced by exploiting the additive structure of the infinitesimal ...... in Financial Engineearing, Queueing Networks, and Manufacturing Systems, ...

  19. Using Biofuel Tracers to Study Alternative Combustion Regimes

    E-Print Network [OSTI]

    Mack, John Hunter; Flowers, Daniel L.; Buchholz, Bruce A.; Dibble, Robert W.

    2006-01-01T23:59:59.000Z

    Simulation of Natural Gas HCCI Combustion: Gas Compositionfor heating the flowing gas. Combustion timing is consideredup. Exhaust gas samples were collected at varying combustion

  20. Blazar Variability and Evolution in the GeV Regime

    E-Print Network [OSTI]

    Tsujimoto, S; Nishijima, K; Kodani, K

    2015-01-01T23:59:59.000Z

    One of the most important problem of the blazar astrophysics is to understand the physical origin of the blazar sequence. In this study, we focus on the GeV gamma-ray variability of blazars and evolution perspective we search the relation between the redshift and the variability amplitude of blazars for each blazar subclass. We analyzed the Fermi-LAT data of the TeV blazars and the bright AGNs (flux $\\geq$ 4$\\times10^{-9}$ cm$^{-2}$s$^{-1}$) selected from the 2LAC (the 2nd LAT AGN catalog) data base. As a result, we found a hint of the correlation between the redshift and the variability amplitude in the FSRQs. Furthermore the BL Lacs which have relatively lower peak frequency of the synchrotron radiation and relatively lower redshift, have a tendency to have a smaller variability amplitude.

  1. Using Biofuel Tracers to Study Alternative Combustion Regimes

    E-Print Network [OSTI]

    Mack, John Hunter; Flowers, Daniel L.; Buchholz, Bruce A.; Dibble, Robert W.

    2006-01-01T23:59:59.000Z

    Section B (NIMB) Using Biofuel Tracers to Study Alternativeinjection. We investigate biofuel HCCI combustion, and use

  2. Regional streamflow regimes and hydroclimatology of the United States

    E-Print Network [OSTI]

    Fleskes, Joe

    and water-resource managers. In recent years, for example, there has been a dramatic increase in the number of investigations focused on the hydrologic and water- resources consequences of climatic variability and change (HCDN) [Slack and Landwehr, 1992; Slack et al., 1993]. The HCDN consists of 1659 sites throughout

  3. The climate regime from The Hague to Marrakech

    E-Print Network [OSTI]

    Watson, Andrew

    of global climate change. The publication of the IPCC's First Assessment Report led the UN Assembly commits countries listed in Annex B2 to reduce their overall greenhouse gas (GHG) emissions by at least can use a range of sophisticated market-based instruments, the so-called `Kyoto mechanisms', and land

  4. Head/disk interface tribology in the nanometer regime

    E-Print Network [OSTI]

    Xu, Jianfeng

    2008-01-01T23:59:59.000Z

    disks with different surface topography. No single transferFigure 7.5 Disk surface topography measured using atomicwith different surface topography. Thus, surface topography

  5. Nio events change precipitation regimes and bring drought espe-

    E-Print Network [OSTI]

    flammable peat is widely distributed there. Highlight FLUXNET sites SE AsianTropical Forest Network extensively coex- ist with tropical peat. However, the tropical forests have been rapidly deforested at a rate...........................Page 5-6 Data Resources: MODIS Data Complements Flux Tower Information Cook RB, Santhana Vannan SK

  6. Bringing Transportation into a Cap-and-Trade Regime

    E-Print Network [OSTI]

    Ellerman, A. Denny.

    The U.S. may at some point adopt a national cap-and-trade system for greenhouse gases, and if and when that happens the system of CAFE regulation of vehicle design very likely could still be in place. Imposed independently ...

  7. The angular correlation hierarchy in the quasilinear regime.

    E-Print Network [OSTI]

    F. Bernardeau

    1995-02-21T23:59:59.000Z

    For Gaussian initial conditions the perturbation theory predicts a very specific hierarchy for the projected matter $p$-point correlation functions. In the small angle approximation and assuming a power-law spectrum I derive the exact expressions of the coefficients $s_p$ relating the averaged $p$-order angular correlation function, $\\omb_p$ to the second one, $\\omb_p=s_p\\ \\omb_2^{p-1}$. These results are valid for any selection function, but for a top-hat angular filter only. These coefficients are found to be significantly higher than their 3D counterparts, $S_p=\\xib_p/\\xib_2^{p-1}$. For the coefficient $s_3$ I discussed the accuracy of the small angle approximation by computing, for particular examples, its angular dependence with Monte-Carlo numerical integrations. It is found that the accuracy of the small angle approximation for $\\theta\\approx 1^o$ slightly depends on the selection function. Using the selection function expected for galaxy catalogues the approximation is found to be reasonably good. The measurements of the $s_p$ parameters made in the APM angular survey are found to give systematic lower values than the theoretical predictions. How significant this discrepancy is and what the implications would be for galaxy formation models is discussed in the last section.

  8. auxiliary heated regimes: Topics by E-print Network

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

    coupled, and is characteristic skin depth of the wave) and may be observed in low pressure inductive plasmas driven at low. The resonant absorption of the electromagnetic...

  9. The evolution of a climate regime: Kyoto to Marrakech

    E-Print Network [OSTI]

    Babiker, Mustafa H.M.; Jacoby, Henry D.; Reilly, John M.; Reiner, David M.

    At meetings in Bonn and Marrakech in 2001, the Conference of the Parties to the Framework Convention on Climate Change broke through an impasse on the detailed provisions needed to allow the Kyoto Protocol to enter into ...

  10. The DOE Thermal Regimes Drilling Program through 1987

    SciTech Connect (OSTI)

    Not Available

    1988-07-01T23:59:59.000Z

    In response to strong endorsement from the scientific community, in the form of a report by the Continental Scientific Drilling Committee of the National Academy of Sciences (CSDC, 1984), the Office of Basic Energy Sciences of the DOE undertook a program of investigations of young magmatic intrusions and their associated thermal systems. To date, the effort has encompassed the first phases of a program to investigate the roots of active hydrothermal systems and has also investigated the thermal, chemical, and mechanical behavior of geologically recent (less than 600 years) magmatic extrusions. Shallow to intermediate-depth holes have been drilled and cored into hydrothermal systems in the silicic Valles and Long Valley calderas and at the crustal spreading center of the Salton Trough. These projects are briefly summarized here and are covered in greater detail in the accompanying appendices.

  11. DEMOCRACY OVER A BARREL: OIL, REGIME CHANGE AND WAR

    E-Print Network [OSTI]

    Karl, Terry

    2008-01-01T23:59:59.000Z

    the third largest proven oil reserves in the world; it maythird biggest known crude oil reserves. “This is a nationalGulf monarchies, where oil reserves per capita are 43 times

  12. Plant toxins and trophic cascades alter fire regime and succession ...

    E-Print Network [OSTI]

    Zhilan Feng

    2012-08-24T23:59:59.000Z

    model can be useful in estimating ecosystem impacts of wolf control and moose harvesting in central. Alaska. Published by Elsevier B.V.. 1. Introduction.

  13. Exploring Advanced Combustion Regimes for Efficiency and Emissions

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

    44.3 46.3 48.8 54.0 56.0 EGR % DNPH Mass Concentration mgs Formaldehyde Acetaldehyde Acrolein Propionaldehyde Benzaldehyde 11 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF...

  14. advanced tokamak regimes: Topics by E-print Network

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

    problems around the tokamak Tore Supra Yannick Fischer Mathematics Websites Summary: for thermonuclear fusion in a tokamak 12. The second and the third authors are partially...

  15. Understanding new regimes for light-matter interactions

    E-Print Network [OSTI]

    Lee, Ka Yan Karen

    2011-01-01T23:59:59.000Z

    This thesis focuses on achieving new understanding of the principles and phenomena involved in the interaction of light with a variety of complicated material systems, including biomaterials and nanostructured materials. ...

  16. Nonlocal Phenomena from Noncommutative Pre-Planckian Regime

    E-Print Network [OSTI]

    M. Heller; W. Sasin

    1999-06-17T23:59:59.000Z

    A model unifying general relativity with quantum mechanics is further developed. It is based on a noncommutative geometry which supposedly modelled the universe in its pre-Planckian epoch. The geometry is totally nonlocal with no time and no space in their usual meaning. They emerge only in the transition process from the noncommutative epoch to the standard space-time physics. Observational aspects of this model are discussed. It is shown that various nonlocal phenomena can be explained as remnants of the primordial noncommutative epoch. In particular, we explain the Einstein-Podolsky-Rosen experiment, the horizon problem in cosmology, and the appearance of singularities in general relativity.

  17. High Biomass Low Export Regimes in the Southern Ocean

    E-Print Network [OSTI]

    Lam, Phoebe J.; Bishop, James K.B.

    2006-01-01T23:59:59.000Z

    org PM , in our PM where m CaCO3 and m opal are the weights1.88 (Hedges et al. 2002), CaCO3 =2.71 g/ cm 3 , opal =2.0in AggregateSalt, m org , m CaCO3 , and m opal . Average

  18. Original article Effects of liming and gypsum regimes on chemical

    E-Print Network [OSTI]

    Boyer, Edmond

    chemistry. The natural soil was reconstituted in columns equipped with zero tension lysimeters. CaCO3, CaCO3 traitements sous forme CaCO3, CaCO3 + MgO et CaSO4, 2H2O sont appoités aux doses équivalentes en CaO de 0, 0

  19. DEMOCRACY OVER A BARREL: OIL, REGIME CHANGE AND WAR

    E-Print Network [OSTI]

    Karl, Terry

    2008-01-01T23:59:59.000Z

    of Aceh’s oil and natural gas resources as a main reason forthe “resource curse” is the fact that rich oil countries (Oil Wealth Dissatisfaction and Political Trust in Norway: A Resource

  20. Oxygen Isotope Evidence For Past And Present Hydrothermal Regimes...

    Open Energy Info (EERE)

    to exist beneath the western moat, perhaps beneath Mammoth Mountain. Authors Brian M. Smith and Gene A. Suemnicht Published Journal Journal of Volcanology and Geothermal...

  1. Casimir repulsion between Topological Insulators in the diluted regime

    E-Print Network [OSTI]

    Pablo Rodriguez-Lopez

    2011-07-15T23:59:59.000Z

    The Pairwise Summation Approximation (PSA) of Casimir energy is applied to a system of two dielectrics with magnetoelectric coupling. In particular, the case of Topological Insulators (TI) is studied in detail. Depending on the the optical response of the TI, we obtain a stable equilibrium distance, atraction for all distances, or repulsion for all distances at zero temperature. This equilibrium distance disappears in the high temperature limit. These results are independent on the geometry of the TI, but are only valid in the diluted approximation.

  2. Using Biofuel Tracers to Study Alternative Combustion Regimes

    E-Print Network [OSTI]

    Mack, John Hunter; Flowers, Daniel L.; Buchholz, Bruce A.; Dibble, Robert W.

    2006-01-01T23:59:59.000Z

    1979. J.B. Heywood, Internal Combustion Engine Fundamentals.Introduction to Internal Combustion Engines (3rd Edition).Coefficient in the Internal Combustion Engine,” SAE Paper

  3. High Biomass Low Export Regimes in the Southern Ocean

    E-Print Network [OSTI]

    Lam, Phoebe J.; Bishop, James K.B.

    2006-01-01T23:59:59.000Z

    Science 304 (5669) 417-420. Bruland, K.W. , Donat, J.R. ,off the coast of California (Bruland et al. 1991; Martin and

  4. Jrgen Alheit A BRIEF OVERVIEW OF THE REGIME SHIFT

    E-Print Network [OSTI]

    shifts in the mean. Several approaches can be distinguished: 1. Parametric methods, such as the classical-order statistics, such as the variance and power spectrum (Tables 2 and 3). A separate group of methods includes., 2003). Strong theoretical basis. Robust to the assumption of normality and equality of variances. Data

  5. Efficient finite-time measurements under thermal regimes

    E-Print Network [OSTI]

    Carlos Alexandre Brasil; Leonardo Andreta de Castro; Reginaldo de Jesus Napolitano

    2014-07-11T23:59:59.000Z

    Contrary to conventional quantum mechanics, which treats measurement as instantaneous, here we explore a model for finite-time measurement. The main two-level system interacts with the measurement apparatus in a Markovian way described by the Lindblad equation, and with an environment, which does not include the measuring apparatus. To analyse the environmental effects on the final density operator, we use the Redfield approach, allowing us to consider a non-Markovian noise. In the present hybrid theory, to trace out the environmental degrees of freedom, we use a previously-developed analytic method based on superoperator algebra and Nakajima-Zwanzig superoperators. Here, we analyse two types of system-environment interaction, phase and amplitude damping, which allows us to conclude that, in general, a finite-time quantum measurement performed during a certain period is more efficient than an instantaneous measurement performed at the end of it, because the rate of change of the populations is attenuated by the system-measurement apparatus interaction.

  6. Minijet and Transverse Energy Production in the BFKL Regime

    E-Print Network [OSTI]

    K. J. Eskola; A. V. Leonidov; P. V. Ruuskanen

    1996-06-21T23:59:59.000Z

    Minijet production in hadronic and nuclear collisions through a BFKL pomeron ladder is studied for the energies of the future LHC heavy-ion collisions. We use unintegrated gluon densities compatible with the small-$x$ increase of parton distributions observed at HERA. We show that at LHC energies the BFKL minijet and transverse energy production is at most of the same order of magnitude as that in the collinear factorization approach.

  7. Symmetry Breaking Regime in the Nonlinear Hartree Equation

    E-Print Network [OSTI]

    prove that a minimizer \\Phi does not have the symmetry properties of the potential v for jgj strictly, sodium 23 11 Na, and lithium 7 3 Li, in which 10 3 to 10 6 atoms have been confined in magnetic traps is the number of bosons in the system, v is the external potential (trap), and V is the two­body interaction

  8. Time Consistent Recursive Risk Measures Under Regime Switching ...

    E-Print Network [OSTI]

    2015-02-04T23:59:59.000Z

    The proper description of dynamic information correlation among individual ... tic security market and investment risk in multi-stage portfolio selection models ...

  9. ORIGINAL PAPER Effects of varying thinning regimes on carbon uptake,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , a shortage of water may also affect its productivity (Bergh et al. 1999, 2005). The water shortage implies to the increasing soil water deficit, without management. · Materials and methods A process-based ecosystem model with varying soil water availability under the changing climate. · Results and discussion We found

  10. !#"%$#&('#)10 )32"3$ Operational Power Reactor Regime, ignited CTF,

    E-Print Network [OSTI]

    Zakharov, Leonid E.

    .4 Pellet fueling of low recycling IST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3 £ ¨ ' 4 2. ¢¤EGF ¨ ! $ -- DT power of the fusion reactor (high ¥ 1.5 sec is bad for power production

  11. Transition to the Relativistic Regime in High Order Harmonic Generation

    SciTech Connect (OSTI)

    Tarasevitch, Alexander; Lobov, Konstantin; Wuensche, Clemens; Linde, Dietrich von der [Institut fuer Experimentelle Physik, Universitaet Duisburg-Essen, D-47048 Duisburg (Germany)

    2007-03-09T23:59:59.000Z

    Experiments and computer simulations on the generation of high order harmonics from steep plasma gradients using intense femtosecond laser pulses are presented. Qualitative changes in the harmonic emission take place when the intensities are increased above 10{sup 19} W/cm{sup 2} and/or the plasma scale length is varied. Good agreement between experimental and calculated spectra makes it possible to clearly distinguish between nonrelativistic and relativistic mechanisms of harmonic generation.

  12. Using Biofuel Tracers to Study Alternative Combustion Regimes

    E-Print Network [OSTI]

    Mack, John Hunter; Flowers, Daniel L.; Buchholz, Bruce A.; Dibble, Robert W.

    2006-01-01T23:59:59.000Z

    Simulation of Natural Gas HCCI Combustion: Gas CompositionPeroxide (DTBP) Additive on HCCI Combustion of Fuel BlendsCharge Compression Ignition (HCCI) Engines: Key Research and

  13. Theory of the Anomalous Hall Effect in the Insulating Regime

    E-Print Network [OSTI]

    Liu, Xiongjun

    2012-10-19T23:59:59.000Z

    The Hall resistivity in ferromagnetic materials has an anomalous contribution proportional to the magnetization, which is defined as the anomalous Hall effect (AHE). Being a central topic in the study of ferromagnetic materials for many decades...

  14. atlantic spreading regime: Topics by E-print Network

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

    FREQUENCY HOPPING SPREAD SPECTRUM VS. DIRECT SEQUENCE SPREAD SPECTRUM RAYLINK AND RAYTHEON OF THE PRECEEDING MATERIAL. 12;FREQUENCY HOPPING VS. DIRECT SEQUENCE Frequency...

  15. Electric Grid Investment Under a Contract Network Regime

    E-Print Network [OSTI]

    California at Berkeley. University of

    property rights will be allocated to someone who increases or in any way modi#12;es the transmission Channing Way Berkeley, California 94720-5180 www.ucei.berkeley.edu/ucei #12;Electric Grid Investment Under Channing Way, Berkeley CA 94720 January 5, 1996 Abstract As competitive reforms are introduced

  16. aquic moisture regime: Topics by E-print Network

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

    option in this regards because of its renewable, abundant, environment friendly nature. Gasification systems require high temperatures and an oxygenstarved environment to convert...

  17. aviation regimes malta: Topics by E-print Network

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

    understood what 84 Origin CONSULTING REPORT Client: Civil Aviation Authority CAA: Andrew Eaton Computer Technologies and Information Sciences Websites Summary: Origin CONSULTING...

  18. Democracy from Above: Regime Transition in the Kingdom of Bhutan

    E-Print Network [OSTI]

    Sinpeng, Aim

    2007-01-01T23:59:59.000Z

    mentioning in the following paragraphs to demonstrate the relatively unconventional pattern of Bhutanese modernisation: 1) astounding economic advancement with minimal industrialisation, 2) a growing wealth disparities with a low level of class struggle... industrialisation in the sense of creating a strong manufacturing base. From 1980 to 2001, the size of the manufacturing sector remains largely unchanged (see Figure 1). Six out of eight Bhutanese still earn their living in the countryside, despite the declining...

  19. Polaritonics : an intermediate regime between electronics and photonics

    E-Print Network [OSTI]

    Ward, David W. (David Wayne), 1970-

    2005-01-01T23:59:59.000Z

    This thesis contains the foundational work behind the field of polaritonics. Corresponding to a frequency range from roughly 100 gigahertz up to 10 terahertz, polaritonics bridges the gap between electronics and photonics. ...

  20. Physics Regimes in the Fusion Ignition Research Experiment (FIRE)

    SciTech Connect (OSTI)

    D.M. Meade; S.C.Jardin; C.E. Kessel; M.A. Ulrickson; J.H. Schultz; P.H. Rutherford; J.A. Schmidt; J.C. Wesley; K.M. Young; N.A.Uckan; R.J. Thome; P. Heitzenroeder; B.E. Nelson; and C.C.Baker

    2001-06-19T23:59:59.000Z

    Burning plasma science is recognized widely as the next frontier in fusion research. The Fusion Ignition Research Experiment (FIRE) is a design study of a next-step burning plasma experiment with the goal of developing a concept for an experimental facility to explore and understand the strong nonlinear coupling among confinement, magnetohydrodynamic (MHD) self-heating, stability, edge physics, and wave-particle interactions that is fundamental to fusion plasma behavior. This will require plasmas dominated by alpha heating (Q greater than or equal to 5) that are sustained for a duration comparable to characteristic plasma timescales (greater than or equal to 10) tau(subscript ''E''), approximately 4 tau(subscript ''He''), approximately 2 tau(subscript ''skin''). The work reported here has been undertaken with the objective of finding the minimum size (cost) device to achieve these physics goals.

  1. Vacuum high harmonic generation in the shock regime

    E-Print Network [OSTI]

    Böhl, P; Ruhl, H

    2015-01-01T23:59:59.000Z

    Electrodynamics becomes nonlinear and permits the self-interaction of fields when the quantised nature of vacuum states is taken into account. The effect on a plane probe pulse propagating through a stronger constant crossed background is calculated using numerical simulation and by analytically solving the corresponding wave equation. The electromagnetic shock resulting from vacuum high harmonic generation is investigated and a nonlinear shock parameter identified.

  2. Interfacial flows in corrugated microchannels: flow regimes, transitions and hysteresis

    E-Print Network [OSTI]

    Feng, James J.

    , 1266-1276 (2011), doi:10.1016/j.ijmultiphaseflow.2011.08.003 #12;model, microfluidics, porous media 1 of displacing oil by water in enhanced oil recovery (Marle, 1981; Lenormand et al., 1988). More recently on hy- drodynamic principles and concrete flow mechanisms. In fact, conflicting assumptions have been

  3. Reliability of laser safety eye wear in the femtosecond regime

    E-Print Network [OSTI]

    3. M. Lenzner, J. Krüger, S. Sartania, Z. Cheng, C. Spielmann, G. Mourou, W. Kautek , F. Krausz and Laser Technology 33, 359 ­362 (2001). 6. S. Sartania, Z. Cheng, M. Lenzner, G. Tempea, C. Spielmann, F

  4. arms control regimes: Topics by E-print Network

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

    mechanical arm control system and some of the lines of thought which led to this design. In particular, the paper discusses the basic systme required in order for the arm to...

  5. Gasoline-like fuel effects on advanced combustion regimes

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

    Design *Members of the AECHCCI working group led by Sandia National Laboratory *CRADA project with Delphi to increase efficiency of ethanol engines *Related funds-in...

  6. alternative combustion regimes: Topics by E-print Network

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

    is a Novel Materials Science Websites Summary: Systems Not suitable for nano-material synthesis Reactive Sample Volume Combustion Product Heaters Self Combustion Product:...

  7. accelerated hypofractionated regime: Topics by E-print Network

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

    that the fermionic field could behave like an inflaton field in the early universe and as dark energy for an old universe. M. O. Ribas; F. P. Devecchi; G. M. Kremer 2005-11-17 3 A...

  8. Hydrothermal Regime of the Southwest Moat of the Long Valley...

    Open Energy Info (EERE)

    of the drilling, sampling, and logging programs have not yet been fully integrated, and critical experiments and analyses remain underway, we present precision temperature and...

  9. Drug Use and Drug Policy in a Prohibition Regime

    E-Print Network [OSTI]

    MacCoun, Robert; Martin, Karin D.

    2008-01-01T23:59:59.000Z

    Prisoners (prior to offense), Drug-related Emergency RoomVisits, 2007 DAWN All illicit drugs Marijuana Cocaine Crack2/4/2008 - 41 Other Sentence Drug Sentence Federal Prisoners

  10. Evolution of tenure regimes and adaptive management in pastoral systems

    E-Print Network [OSTI]

    Tate, Kenneth

    in Mongolia Slow privatization of land Mongolia #12;Community-based Rangeland Management (CBRM) institutions in Mongolia · Goal is improved pasture use and healthier grasslands · On common land, not privatized land · > 2,000 CBRM groups across Mongolia Reid this talk #12;Strategy 2: Restore connections after

  11. Altered Fire Regimes Affect Landscape Patterns of Plant

    E-Print Network [OSTI]

    Mladenoff, David

    , average parameters can be hard to define as the frequency of the disturbance is of the same order of magni of disturbance and plant succession, to examine the resilience of dominant plant species, representing different disturbance response strate- gies, to the effect of varying fire rotation intervals (FRI). The simulated fire

  12. Altering hydrologic regime to revgetate crusted soils on semiarid rangeland

    E-Print Network [OSTI]

    Wentz, Amy Leigh

    2004-11-15T23:59:59.000Z

    , in Reagan County, Texas, USA. This area lies in the semiarid portion of the Edwards Plateau of western Texas (31 16? N, -101?32? W). Big Jim Ranch has been used for livestock production since at least 1897. Cattle, sheep, and horses are stocked...

  13. RF Gun cavities cooling regime study. K. Floettmann1

    E-Print Network [OSTI]

    RF power of Pa 68kW corre- sponds to a heat load of 300kW m . To remove such a high heat value from of RF fields in the cavity at an operating frequency is calculated in the usual way. The temperature) with the boundary condition at the RF cavity surface: kc(ngradT) = Ps, (2) where kc = 391 W m·K is the heat

  14. Gasoline-Like Fuel Effects on Advanced Combustion Regimes

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

    tools to assess fuel property effects on advanced combustion, emissions, and engine optimization Relevance: Determine the effects of fuel properties and chemistries on...

  15. A Moment Approach to Pricing Exotic Options Under Regime ...

    E-Print Network [OSTI]

    2011-08-24T23:59:59.000Z

    greatly reduced by exploiting the additive structure of the infinitesimal generator ...... Engineering, Queueing Networks, and Manufacturing Systems (pp.

  16. Changes in surface water regime and resources in

    E-Print Network [OSTI]

    distribution in Mongolia, l/s sq.km*100 Converted from 1: 1000000 map to 0.5ox0.5o grid points Results (Continuation) Mean evapotranspiration, mm/year Converted from 1: 9000000 map to 0.5ox0.5o grid #12;3 Evaporation from open water surface, mm/year Converted from 1: 9000000 map to 0.5ox0.5o grid cells Ratio

  17. Quantum Dot Photovoltaics in the Extreme Quantum Confinement Regime

    E-Print Network [OSTI]

    under many tens of hours of solar illumination without the need for encapsulation. We explore herein reaching the earth. One oppor- tunity for further improvement in solution- cast solar cells' efficiency lies in making better use of the sun's full spectrum, includ- ing the infrared portion. Polymer solar

  18. Bose-Einstein Condensates in the Large Gas Parameter Regime

    E-Print Network [OSTI]

    A. Fabrocini; A. Polls

    2001-01-25T23:59:59.000Z

    Bose-Einstein condensates of 10$^4$ $^{85}$Rb atoms in a cylindrical trap are studied using a recently proposed modified Gross-Pitaevskii equation. The existence of a Feshbach resonance allows for widely tuning the scattering length of the atoms, and values of the peak gas parameter, $x_{pk}$, of the order of 10$^{-2}$ can be attained. We find large differences between the results of the modified Gross-Pitaevskii and of the standard Thomas-Fermi, and Gross-Pitaevskii equations in this region. The column densities at $z=0$ may differ by as much as $\\sim 30%$ and the half maximum radius by $\\sim 20%$. The scattering lengths estimated by fitting the half maximum radius within different approaches can differ by $\\sim 40%$.

  19. Using Biofuel Tracers to Study Alternative Combustion Regimes

    E-Print Network [OSTI]

    Mack, John Hunter; Flowers, Daniel L.; Buchholz, Bruce A.; Dibble, Robert W.

    2006-01-01T23:59:59.000Z

    Internal Combustion Engines The methods described below for tracing fuel component carbon in the emissions

  20. Central exclusive meson production in the perturbative regime

    SciTech Connect (OSTI)

    Harland-Lang, L. A.; Khoze, V. A. [Department of Physics and Institute for Particle Physics Phenomenology, University of Durham, DH1 3LE (United Kingdom); Ryskin, M. G. [Petersburg Nuclear Physics Institute, NRC Kurchatov Institute, Gatchina, St. Petersburg, 188300 (Russian Federation); Stirling, W. J. [Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge, CB3 0HE (United Kingdom)

    2013-04-15T23:59:59.000Z

    Selected new results on central exclusive production (CEP) processes within the pQCD-based Durham model are discussed.

  1. Parallel Imaging and Acceleration in the Johnson Noise Dominated Regime

    E-Print Network [OSTI]

    Rosen, Matthew S

    imaging is limit- ed and generally uses superconducting quantum interference device (SQUID) sensors [1

  2. Friction of Steel Sliding Under Boundary Lubrication Regime in Commercial

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2 DOE March, 20152LLCDepartment ofDepartmentGear

  3. Fuel Modification t Facilitate Future Combustion Regimes? | Department 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 DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdfTechnologies Program (FCTP)Overviewgreen hStrategy1 DOE

  4. Exploring Advanced Combustion Regimes for Efficiency and Emissions |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport in Representative Geologic Media | Department ofTransformingExplorationDepartment

  5. Electric Wholesale Market Regimes in the United States: Implications for

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy Chinaof EnergyImpactOn July 2, 2014 in theGroup ReportLowandDepartment of

  6. Stretch Efficiency - Thermodynamic Analysis of New Combustion Regimes

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideoStrategic Safety Goals Strategic Safety GoalsDepartment

  7. A SEQUENTIAL METHOD FOR DETECTING REGIME SHIFTS IN THE MEAN AND VARIANCE A SEQUENTIAL METHOD FOR DETECTING REGIME SHIFTS

    E-Print Network [OSTI]

    in the mean. As climate changes due to natural causes or human impact, it may be changes in the frequency temperature referred to as ,,global warming". Most of the reviewed methods have one common drawback

  8. The Unexpected end of the Qadhafi's regime Until the Arab spring, the Qadhafi's regime had overcome the

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Libya up to the "global war against terrorism" and created an image of his country as a Mediterra- nean portrayed Libya as having such huge potential that it will have great influence in the future. According to Seif El Islam, «Libya will be a modern country with modern infrastruc- ture and a high GDP. Its

  9. By acceptance of this article, the publisher and/or recipient acknowledges the U.S. Government's right to retain a non exclusive, royalty-free license in and to any copyright

    E-Print Network [OSTI]

    . DE-AC02-98CH10886. ESTIMATING UNCERTAINTY OF EMISSIONS INVENTORIES: WHAT HAS BEEN DONE/WHAT NEEDS in National Greenhouse Gas Inventories, Paris, France October 13-15, 1998 #12;- 1 - BACKGROUND Developing scientifically defensible quantitative estimates of the uncertainty of atmospheric emissions inventories has been

  10. By acceptance of this article, the publisher and/or recipient acknowledges the U.S. Government's right to retain a nonexclusive, royalty-free copyright covering this paper.

    E-Print Network [OSTI]

    to as the direct effect). However absorbing aerosol particles decrease reflection of shortwave radiation and leading in turn to an increase in cloud albedo (indirect aerosol effect). Each of these phenomena has been. ROLE OF AEROSOLS IN RADIATIVE FORCING OF CLIMATE CHANGE: GLOBAL MEAN AND UNCERTAINTIES S. E. Schwartz

  11. Non-exclusive License: AGMT-XXXX U.S. DEPARTMENT OF ENERGY NATIONAL...

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

    for the computation of any royalty fees payable under this License, and shall render to LICENSOR annually, within thirty days of the anniversary date of this License, an...

  12. Exclusive License: AGMT-XXXX U.S. DEPARTMENT OF ENERGY NATIONAL...

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

    for the computation of any royalty fees payable under this License, and shall render to LICENSOR annually, within thirty days of the anniversary date of this License, an...

  13. OAS-M-05-07

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

    Bechtel's internal auditors reported weaknesses in internal controls over royalty collections. Specifically, they found that an adequate accounts receivable process had not been...

  14. Filling the Strategic Petroleum Reserve | Department of Energy

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

    1999, the Clinton Administration announced a new plan to resume fill of the Strategic Petroleum Reserve with federal royalty oil from production in the Central Gulf of Mexico....

  15. Oil and Gas General Provisions (Montana)

    Broader source: Energy.gov [DOE]

    This chapter describes general provisions for the exploration and development of oil and gas resources in Montana. The chapter addresses royalty interests, regulations for the lease of local...

  16. Argonne Alumni | Argonne National Laboratory

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

    Argonne Alumni Update your contact information Please keep your contact information current. We may need periodic contact with former Argonne employees (e.g., distributing royalty...

  17. U.S. West: The Next Energy Nexus

    E-Print Network [OSTI]

    Davis, Sandra K.; Kear, Andrew R.

    2014-01-01T23:59:59.000Z

    horizontal drilling, in oil shale basins. Over the periodcompanies to mine coal, oil, oil shale and natural gas oning), and the royalty for oil shale. Thus, federal agencies

  18. What Recession? Alaska's FY 2011 Budget

    E-Print Network [OSTI]

    McBeath, Jerry

    2011-01-01T23:59:59.000Z

    and production. Taxes on oil and gas (royalties, severanceincreased tax credits for oil and gas exploration activity,the refuge off limits for oil and gas exploration (FDNM,

  19. Library Terms That Users Understand

    E-Print Network [OSTI]

    Kupersmith, John

    2012-01-01T23:59:59.000Z

    University of Newfoundland Libraries Test methods: user taskUsability of the Academic Library Web Site: ImplicationsDesign," College & Research Libraries (July Library Website

  20. Contributed Paper Generation of Priority Research Questions

    E-Print Network [OSTI]

    Hutchings, Jeffrey A.

    of Newfoundland, Happy Valley ­ GooseBay, NL A0P 1E0, Canada 14 Ocean Management Research Network, Ottawa, ON K1N

  1. ENERGY BASED ICE COLLISION FORCES Claude Daley1

    E-Print Network [OSTI]

    Daley, Claude

    1 ENERGY BASED ICE COLLISION FORCES Claude Daley1 1 Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1C 3X5 ABSTRACT Ice collision forces can be determined by energy considerations. A variety of interaction geometry cases are considered. The indentation energy functions for eight different

  2. ENERGY BASED ICE COLLISION FORCES Claude Daley1

    E-Print Network [OSTI]

    Daley, Claude

    ENERGY BASED ICE COLLISION FORCES Claude Daley1 1 Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1C 3X5 ABSTRACT Ice collision forces can be determined by energy considerations. A variety of interaction geometry cases are considered. The indentation energy functions for eight different

  3. PLEASE SCROLL DOWN FOR ARTICLE This article was downloaded by: [Canadian Research Knowledge Network

    E-Print Network [OSTI]

    Coles, Cynthia

    ://www.informaworld.com/smpp/title~content=t713401148 Influence of Bulking Agents, Fertilizers and Bacteria on the Removal of Diesel from a Newfoundland on the Removal of Diesel from a Newfoundland Soil',Soil and Sediment Contamination: An International Journal,18 not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever

  4. High precision measurement of undulator polarization in the regime of hard x-rays

    SciTech Connect (OSTI)

    Marx, B., E-mail: berit.marx@uni-jena.de [Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, D-07743 Jena (Germany); Schulze, K. S.; Uschmann, I.; Kämpfer, T.; Wehrhan, O.; Förster, E.; Paulus, G. G. [Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, D-07743 Jena (Germany); Helmholtz-Institut Jena, Fröbelstieg 3, D-07743 Jena (Germany); Wille, H. C.; Schlage, K.; Röhlsberger, R.; Weckert, E. [Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, D-22607 Hamburg (Germany); Stöhlker, T. [Helmholtz-Institut Jena, Fröbelstieg 3, D-07743 Jena (Germany)

    2014-07-14T23:59:59.000Z

    We have measured the polarization purity of undulator radiation at 12.9?keV, with hitherto unachievable precision. We could measure a polarization purity of 1.8?×?10{sup ?4} by using a silicon channel-cut crystal with six Bragg reflections at 45° as analyzer.

  5. Some free boundary problems in potential flow regime usinga based level set method

    E-Print Network [OSTI]

    Garzon, M.

    2009-01-01T23:59:59.000Z

    mass vs time. Case (a) and (b) Wave Energy. (H0=0.6 slope=1:22) Ep Ek E E time Figure 14: Wave energy.Case (a) Wave Energy. (H0=0.6 slope=1:15) Ep Ek E E time

  6. Energetics of star-disc encounters in the non-linear regime

    E-Print Network [OSTI]

    S. M. Hall; C. J. Clarke; J. E. Pringle

    1995-10-31T23:59:59.000Z

    We investigate the response of a circumstellar accretion disc to the fly-by of a perturbing mass on a parabolic orbit. The energy and angular momentum transferred during the encounter are calculated using a reduced three-body method. In almost all close encounters the energy and angular momentum transfer is dominated by disc material becoming unbound from the system, with the contributions from close disc particle -- star encounters being significant. For more distant encounters with some prograde element to the motion the disc material loses energy and angular momentum to the perturber's orbit through a resonance feature. The magnitude of the energy transfer calculated in our simulations is greater than that of the binding energy of material exterior to periastron by a factor of two in the prograde case, and up to a factor of five in the case of the retrograde encounter. The destructive nature of the encounters indicates that a non-linear treatment is essential in all but the most distant encounters.

  7. Experimental study of the combustion regimes of a compartment fire under conditions of underventilation 

    E-Print Network [OSTI]

    Pearson, Anthony E.

    2007-02-06T23:59:59.000Z

    Despite advances in the understanding of fire over the past decades [Quintiere 2001] and despite the advances in computing capacity, our ability to predict the behaviour of fires in general and building fires in particular ...

  8. The Vlasov-Poisson system with strong external magnetic field. Finite Larmor radius regime

    E-Print Network [OSTI]

    Bostan, Mihai

    = De n 0 E t T , x D , B = De n me 20P B t T , x D . Observing that De n me 0P = pthme PeTp , we also

  9. Effects of the Arundo donax L. on Hydrological Regime of the Rio Grande Basin

    E-Print Network [OSTI]

    Li, Fan

    2012-07-16T23:59:59.000Z

    Mean Ocean Water/ Standard Light Antarctic Precipitation (SMOW/SLAP) (1? = 1.5 ? for H, 0.5 ? for O) . 16 The isotopic compositions of a water sample are reported relative to the Vienna Standard Mean Ocean Water (VSMOW) reference for both hydrogen...

  10. About hierarchy of multifrequency quasiperiodicity regimes in discrete low-dimensional Kuramoto model

    E-Print Network [OSTI]

    Alexander P. Kuznetsov; Yuliya V. Sedova

    2014-02-26T23:59:59.000Z

    A dynamics of a low-dimensional ensemble consisting of connected in a network five discrete phase oscillators is considered. A two-parameter synchronization picture which appears instead of the Arnold tongues with an increase of the system dimension is discussed. An appearance of the Arnol'd resonance web is detected on the "frequency - coupling" parameter plane. The cases of attractive and repulsive interactions are discussed.

  11. Building a Home-Land: Zionism as a Regime of Housing 1860-2005

    E-Print Network [OSTI]

    Allweil, Yael

    2011-01-01T23:59:59.000Z

    1996). Ward, Peter M. Self-Help Housing: A Critique: Mansellto understand the role of housing, two central questions areWho performs the act of housing, and who benefits from it?

  12. Some free boundary problems in potential flow regime usinga based level set method

    E-Print Network [OSTI]

    Garzon, M.

    2009-01-01T23:59:59.000Z

    Port, Coastal, and Ocean Engineering (Sep/Oct 1999). [26]Port, Coastal, and Ocean Engineering (June 1997). [23

  13. Nuclear Engineering and Design 189 (1999) 139161 On the regimes of premixing

    E-Print Network [OSTI]

    Yuen, Walter W.

    1999-01-01T23:59:59.000Z

    experiments, which opened the way, together with MAGICO, employed pre-broken-up thermitic melts, and thus

  14. OXIDATION OF FUELS IN THE COOL FLAME REGIME FOR COMBUSTION AND REFORMING FOR FUEL CELLS.

    SciTech Connect (OSTI)

    NAIDJA,A.; KRISHNA,C.R.; BUTCHER,T.; MAHAJAN,D.

    2002-08-01T23:59:59.000Z

    THE REVIEW INTEGRATES RECENT INVESTIGATIONS ON AUTO OXIDATION OF FUEL OILS AND THEIR REFORMING INTO HYDROGEN RICH GAS THAT COULD SERVE AS A FEED FOR FUEL CELLS AND COMBUSTION SYSTEMS.

  15. Entrepreneurship in Japan's ICT Sector: Opportunity and Protection from Japan's Telecommunications Regime Shift

    E-Print Network [OSTI]

    Kushida, Kenji E

    2012-01-01T23:59:59.000Z

    from Fransman 2006: 11, 12). PPP Downloaded from http://DSL DSL DSL Monthly Charge PPP ** USD Excludes all carriersProviders Ranked by Price (PPP), 2003*. Entrepreneurship in

  16. Propagation of a cloud of hot electrons in the regime of fast relaxation

    SciTech Connect (OSTI)

    Foroutan, G.R.; Li, B.; Robinson, P.A.; Cairns, I.H.; Moslehi-Fard, M. [School of Physics, University of Sydney, New South Wales 2006, Sydney (Australia) and Faculty of Physics, Tabriz University, Tabriz 51664 (Iran); School of Physics, University of Sydney, New South Wales 2006, Sydney (Australia); Faculty of Physics, Tabriz University, Tabriz 51664 (Iran, Islamic Republic of)

    2005-04-15T23:59:59.000Z

    The propagation of a cloud of hot electrons and generation of Langmuir waves are investigated using numerical simulation of the quasilinear equations and analytical gas-dynamic theory. The validity of the gas-dynamic theory is investigated and the accuracy of Ryutov and Sagdeev's gas-dynamic equations is explored. It is found that inclusion of spontaneous emission terms in the gas-dynamic equations is necessary for self-consistency of analytical solutions. Results of numerical simulations show that the electron distribution function relaxes to a plateau state and excites Langmuir waves. Evolution of the upper boundary and the height of the plateau are investigated and it is found at a given time and location there are three different regions in the electron beam distribution which correspond to unrelaxed, partially relaxed, and completely relaxed states. In the completely relaxed region there is a good agreement between the results of numerical simulation and the predictions of gas-dynamic theory. As the beam propagates at a given location slower electrons arriving later excite Langmuir waves at lower velocities and reabsorb the waves generated at slightly higher velocities. Hence the upper boundary of the plateau is not constant and moves to lower velocities with time. Results of numerical simulations show there is an abrupt change in reabsorption of waves near the upper boundary such that damping is maximal near this velocity and decreases very rapidly for higher velocities. The coordinate extent of the beam and waves increases with time but their profiles remain similar at all times and this situation enables a self-similar solution to be used. For the total wave energy density good consistency is found between the numerical results and gas-dynamic theory. In the case of an initially unstable beam distribution function, Langmuir wave pile-up near the injection site is observed and it is found that its efficiency depends on temperature and the mean injection velocity of the beam distribution function. These piled-up waves are slowly damped out due to weak Landau damping at the tail of cold background distribution function and propagate very slowly at their group velocity.

  17. Regimes of Dispossession: Special Economic Zones and the Political Economy of Land in India

    E-Print Network [OSTI]

    Levien, Michael James

    2013-01-01T23:59:59.000Z

    and Rehabilitation Policy for India. ” Pp. 39- 49 in India1997. Rehabilitation Policy and Law in India: A Right toBank. World Bank. 2007. India: Land Policies for Growth and

  18. Mesoscopic modeling of stochastic reaction-diffusion kinetics in the subdiffusive regime

    E-Print Network [OSTI]

    Emilie Blanc; Stefan Engblom; Andreas Hellander; Per Lötstedt

    2015-03-24T23:59:59.000Z

    Subdiffusion has been proposed as an explanation of various kinetic phenomena inside living cells. In order to fascilitate large-scale computational studies of subdiffusive chemical processes, we extend a recently suggested mesoscopic model of subdiffusion into an accurate and consistent reaction-subdiffusion computational framework. Two different possible models of chemical reaction are revealed and some basic dynamic properties are derived. In certain cases those mesoscopic models have a direct interpretation at the macroscopic level as fractional partial differential equations in a bounded time interval. Through analysis and numerical experiments we estimate the macroscopic effects of reactions under subdiffusive mixing. The models display properties observed also in experiments: for a short time interval the behavior of the diffusion and the reaction is ordinary, in an intermediate interval the behavior is anomalous, and at long times the behavior is ordinary again.

  19. Distribution of Soil Temperature Regimes and Climate Change in the Mojave Desert Region

    E-Print Network [OSTI]

    Bai, Yanying

    2009-01-01T23:59:59.000Z

    precipitation, and water vapor on diurnal temperature range.Idaho, United States. Water Resour. Res. 37: 2843-2846.and J. Bouma. 1994. Modelling water and chemical fluxes as

  20. Photoluminescence Detected Doublet Structure in the Integer and Fractional Quantum Hall Regime

    SciTech Connect (OSTI)

    Kim, Yongmin; Munteanu, F.M.; Perry, C.H.; Reno, J.L.; Rickel, D.G.; Simmons, J.A.

    1999-05-25T23:59:59.000Z

    We present here the results of polarized magneto-photoluminescence measurements on a high mobility single-heterojunction. The presence of a doublet structure over a large magnetic field range (2>v>l/6) is interpreted as possible evidence for the existence of a magneto-roton minima of the charged density waves. This is understood as an indication of strong electronic correlation even in the case of the IQHE limit.