Sample records for matters online townhall

  1. Impacts of a Quality Matters™ Workshop on Faculty Who Design, Develop, and Deliver Online Courses: A Mixed Methods Study

    E-Print Network [OSTI]

    Mercer, Rene E.

    2014-05-30T23:59:59.000Z

    providing overviews of new roles and competencies necessary for online teaching (Aydin, 2005; Baran, Correia, & Thompson, 2011; Goodyear, Salmon, Spector, Steeples, & Tickner, 2001). Nor can the answer be expected to be prescriptive in nature as faculty... teaching, they now have to understand content and technology (Ray, 2009). Goodyear, Salmon, Spector, Steeples, and Tickner (2001) delineate this new role into categories: course developer, online facilitator, collaborator, and technology expert. Baran...

  2. A new aerosol collector for quasi on-line analysis of particulate organic matter: the Aerosol Collection Module (ACM) and first applications with a GC/MS-FID

    E-Print Network [OSTI]

    Hohaus, T.

    In many environments organic matter significantly contributes to the composition of atmospheric aerosol particles influencing its properties. Detailed chemical characterization of ambient aerosols is critical in order to ...

  3. Optimization Online

    E-Print Network [OSTI]

    Optimization Online is a repository of e-prints about optimization and related topics. Submissions to Optimization Online are moderated by a team of volunteer

  4. Syllabus (ONLINE)

    E-Print Network [OSTI]

    Devlin, Patrick M

    2015-01-03T23:59:59.000Z

    Students should set aside at least 9 hours a week to watch videos, complete outlines, review. PowerPoint presentations, complete online homework and quizzes ...

  5. Optimization Online - Category Archive

    E-Print Network [OSTI]

    Optimization Online. Browse Submissions By Area. Linear, Cone and Semidefinite ... Optimization Online is supported by the Mathematical Optmization Society.

  6. Optimization Online - Category Archive

    E-Print Network [OSTI]

    Optimization Online. Browse Submissions By Area. Integer Programming ... Optimization Online is supported by the Mathematical Optmization Society.

  7. Optimization Online - Digest Archive

    E-Print Network [OSTI]

    Optimization Online Digest Archive. Subscribe to the digest. ... Online is supported by the Mathematical Optmization Society. Mathematical Optimization Society.

  8. Optimization Online - Category Archive

    E-Print Network [OSTI]

    Optimization Online. Browse Submissions By Area. Complementarity and ... Optimization Online is supported by the Mathematical Optmization Society.

  9. Optimization Online Moderation Policy

    E-Print Network [OSTI]

    Optimization Online Copyright Policy Copyright Policy By submitting a paper, all authors of the paper agree that other users of Optimization Online can download

  10. Optimization Online - Digest

    E-Print Network [OSTI]

    Complete the form below to subscribe to the free Optimization Online Digest. ... Type your e-mail address to unsubscribe from the Optimization Online Digest.

  11. Online Resources

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch > TheNuclear Astrophysics One ofSpeeding accessOfficeAdsorptionOnline

  12. Matter & Energy Robotics Research

    E-Print Network [OSTI]

    Ruina, Andy L.

    Vehicles.com/Mariner Lean Six Sigma Online -- Top Ranked Purdue Now Offers Online Lean Six Sigma Certification www

  13. Dark Matters

    ScienceCinema (OSTI)

    Joseph Silk

    2010-01-08T23:59:59.000Z

    One of the greatest mysteries in the cosmos is that it is mostly dark.  Astronomers and particle physicists today are seeking to unravel the nature of this mysterious, but pervasive dark matter which has profoundly influenced the formation of structure in the universe.  I will describe the complex interplay between galaxy formation and dark matter detectability and review recent attempts to measure particle dark matter by direct and indirect means.

  14. Marcus Hutter -1 -Online Prediction Bayes versus Experts Online Prediction

    E-Print Network [OSTI]

    Hutter, Marcus

    Marcus Hutter - 1 - Online Prediction ­ Bayes versus Experts Online Prediction: Bayes versus;Marcus Hutter - 2 - Online Prediction ­ Bayes versus Experts Table of Contents · Sequential/online prediction: Setup · Bayesian Sequence Prediction (Bayes) · Prediction with Expert Advice (PEA) · PEA Bounds

  15. 2006 - Optimization Online

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  16. Optimization Online - Category Archive

    E-Print Network [OSTI]

    Optimization Online. Browse Submissions By Area. Combinatorial Optimization. 2000 · 2001 · 2002 · 2003 · 2004 · 2005 · 2006 · 2007 · 2008 · 2009 · 2010 · 2011

  17. Optimization Online - Category Archive

    E-Print Network [OSTI]

    Optimization Online. Browse Submissions By Area. Nonlinear Optimization. 2000 · 2001 · 2002 · 2003 · 2004 · 2005 · 2006 · 2007 · 2008 · 2009 · 2010 · 2011 ...

  18. Optimization Online - Coordinators

    E-Print Network [OSTI]

    Optimization Online submissions are electronically handled by a team of ... OR and Management Sciences / Integer Programming / Robust Optimization ...

  19. Matter Field, Dark Matter and Dark Energy

    E-Print Network [OSTI]

    Masayasu Tsuge

    2009-03-24T23:59:59.000Z

    A model concerning particle theory and cosmology is proposed. Matter field, dark matter and dark energy are created by an energy flow from space to primordial matter fields at the phase transition in the early universe.

  20. ONLINE LEARNING Managing energy for a sustainable future

    E-Print Network [OSTI]

    California at Davis, University of

    ONLINE LEARNING Managing energy for a sustainable future The Energy Resource Management Certificate energy management. Pursuing sustainable energy management strategies can be a powerful tool for achieving the California Energy Commission. Gain practical knowledge that matters n Explore the practical, sustainable

  1. NET - Optimization Online

    E-Print Network [OSTI]

    Optimization Online An E-Print Site for the Optimization Community. Network Optimization submissions; 2001 · 2003 · 2004 · 2005 · 2006 · 2007 · 2008 · 2009

  2. Optimization Online - Category Archive

    E-Print Network [OSTI]

    Optimization Online. Browse Submissions By Area. Global Optimization. 2000 · 2001 · 2002 · 2003 · 2004 · 2005 · 2006 · 2007 · 2008 · 2009 · 2010 · 2011 · 2012

  3. Historical Maps Online

    E-Print Network [OSTI]

    Rumsey, David Y.

    2005-01-31T23:59:59.000Z

    geospatial data to see change over time. The online map collection can be accessed over the Internet from search engines, library catalogs, GIS databases and many other entry points. Rumsey continues to add new content to the online collection and develops...

  4. HOUSING GUARANTEE Apply Online

    E-Print Network [OSTI]

    Mease, Kenneth D.

    THE UCI HOUSING GUARANTEE Apply Online 1 Log in to your MyAdmission account via the tab of Admission fee. 3 Complete the Online Housing Application and pay the $20 non-refundable fee. Freshmen apply for the residence halls. Transfer students apply for Arroyo Vista theme houses and on-campus apartments. Students 25

  5. Matter Wave Radiation Leading to Matter Teleportation

    E-Print Network [OSTI]

    Yong-Yi Huang

    2015-02-12T23:59:59.000Z

    The concept of matter wave radiation is put forward, and its equation is established for the first time. The formalism solution shows that the probability density is a function of displacement and time. A free particle and a two-level system are reinvestigated considering the effect of matter wave radiation. Three feasible experimental designs, especially a modified Stern-Gerlach setup, are proposed to verify the existence of matter wave radiation. Matter wave radiation effect in relativity has been formulated in only a raw formulae, which offers another explanation of Lamb shift. A possible mechanics of matter teleportation is predicted due to the effect of matter wave radiation.

  6. Baryonic matter and beyond

    E-Print Network [OSTI]

    Kenji Fukushima

    2014-10-01T23:59:59.000Z

    We summarize recent developments in identifying the ground state of dense baryonic matter and beyond. The topics include deconfinement from baryonic matter to quark matter, a diquark mixture, topological effect coupled with chirality and density, and inhomogeneous chiral condensates.

  7. Online Quiz Instructions

    E-Print Network [OSTI]

    Kelly Beranger

    2006-01-06T23:59:59.000Z

    Completing an Online Quiz. Quizzes .... There are buttons provided for these as well or you may type them in on your own. For the ... Good luck. ... include practice exercise tutorials, videos, practice quizzes, practice exams, and live tutors.

  8. Dark Matter Theory

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

    Dark Matter Theory Dark Matter Theory Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664 Email Bruce Carlsten (505)...

  9. Optimization Online Digest -- January 2011

    E-Print Network [OSTI]

    Optimization Online Digest — January 2011. Applications — OR and ... Anders Skajaa, John Bagterp Jørgensen, Per Christian Hansen Double Smoothing ...

  10. Optimization Online Digest -- July 2003

    E-Print Network [OSTI]

    Optimization Online Digest — July 2003. Applications — OR and Management Sciences Shunting Minimal Rail Car Allocation Marco E. Luebbecke, Uwe T.

  11. Optimization Online Digest -- October 2003

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  12. Optimization Online Digest -- December 2004

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  13. Sensorless, Online Motor Diagnostics

    E-Print Network [OSTI]

    Yazici, Birsen

    of faults or incipi- ent faults in electric motor drives: Sensorless torque measurement Direct detection as the motor. Exten- sive online monitoring of the motors can lead to greater plant availability, extended over the last several years, ade- quate data processing capability is now available on cost

  14. Design of programmable matter

    E-Print Network [OSTI]

    Knaian, Ara N. (Ara Nerses), 1977-

    2008-01-01T23:59:59.000Z

    Programmable matter is a proposed digital material having computation, sensing, actuation, and display as continuous properties active over its whole extent. Programmable matter would have many exciting applications, like ...

  15. Asymmetric dark matter

    SciTech Connect (OSTI)

    Kumar, Jason [Department of Physics and Astronomy, University of Hawaii, Honolulu, HI 96822 (United States)

    2014-06-24T23:59:59.000Z

    We review the theoretical framework underlying models of asymmetric dark matter, describe astrophysical constraints which arise from observations of neutron stars, and discuss the prospects for detecting asymmetric dark matter.

  16. Exothermic dark matter

    E-Print Network [OSTI]

    Graham, Peter W.

    We propose a novel mechanism for dark matter to explain the observed annual modulation signal at DAMA/LIBRA which avoids existing constraints from every other dark matter direct detection experiment including CRESST, CDMS, ...

  17. Hot-dark matter, cold dark matter and accelerating universe

    E-Print Network [OSTI]

    Abbas Farmany; Amin Farmany; Mohammad Mahmoodi

    2006-07-07T23:59:59.000Z

    The Friedman equation is solved for a universe contains hotdark matter and cold dark matter. In this scenario, hot-dark matter drives an accelerating universe no cold dark matter.

  18. in Condensed Matter Physics

    E-Print Network [OSTI]

    van der Torre, Leon

    Master in Condensed Matter Physics ­ Master académique #12;2 #12;3 Students at the University. Condensed matter physics is about explaining and predicting the relationship between the atomic, and broad education in the field of condensed matter physics · introduce you to current research topics

  19. Of Matters Condensed

    E-Print Network [OSTI]

    Shulman, Michael

    2015-01-01T23:59:59.000Z

    The American Physical Society (APS) March Meeting of condensed matter physics has grown to nearly 10,000 participants, comprises 23 individual APS groups, and even warrants its own hashtag (#apsmarch). Here we analyze the text and data from March Meeting abstracts of the past nine years and discuss trends in condensed matter physics over this time period. We find that in comparison to atomic, molecular, and optical physics, condensed matter changes rapidly, and that condensed matter appears to be moving increasingly toward subject matter that is traditionally in materials science and engineering.

  20. Incompressibility of strange matter

    E-Print Network [OSTI]

    Monika Sinha; Manjari Bagchi; Jishnu Dey; Mira Dey; Subharthi Ray; Siddhartha Bhowmick

    2004-04-01T23:59:59.000Z

    Strange stars calculated from a realistic equation of state (EOS), that incorporate chiral symmetry restoration as well as deconfinement at high density show compact objects in the mass radius curve. We compare our calculations of incompressibility for this EOS with that of nuclear matter. One of the nuclear matter EOS has a continuous transition to ud-matter at about five times normal density. Another nuclear matter EOS incorporates density dependent coupling constants. From a look at the consequent velocity of sound, it is found that the transition to ud-matter seems necessary.

  1. Big Questions: Dark Matter

    ScienceCinema (OSTI)

    Lincoln, Don

    2014-08-07T23:59:59.000Z

    Carl Sagan's oft-quoted statement that there are "billions and billions" of stars in the cosmos gives an idea of just how much "stuff" is in the universe. However scientists now think that in addition to the type of matter with which we are familiar, there is another kind of matter out there. This new kind of matter is called "dark matter" and there seems to be five times as much as ordinary matter. Dark matter interacts only with gravity, thus light simply zips right by it. Scientists are searching through their data, trying to prove that the dark matter idea is real. Fermilab's Dr. Don Lincoln tells us why we think this seemingly-crazy idea might not be so crazy after all.

  2. Online Marketplace for Residential Measures

    E-Print Network [OSTI]

    Ashe,J.; MBA; BEP

    2014-01-01T23:59:59.000Z

    We change the way people use energy™ Online Marketplace for Residential Measures 2014 Program Year ESL-KT-14-11-09 CATEE 2014: Clean Air Through Efficiency Conference, Dallas, Texas Nov. 18-20 Delivery Channels/Options ? Online Marketplace/ Drop... Ship Method 2© Copyright 2014 CLEAResult. All rights reserved. ESL-KT-14-11-09 CATEE 2014: Clean Air Through Efficiency Conference, Dallas, Texas Nov. 18-20 Advantages of Online Marketplace ? Target a different/convenience shopper to complement...

  3. Optimization Online Digest -- January 2009

    E-Print Network [OSTI]

    Applications — Science and Engineering On the Optimal On-Line Management of Photovoltaic-Hydrogen Hybrid Energy Systems Victor Zavala, Mihai Anitescu, ...

  4. Online Social Networks and People's Psychology

    E-Print Network [OSTI]

    Hoang, Hai

    2013-01-01T23:59:59.000Z

    102-139. Online Social Networks and People’s Psychology III.and Table 4). Online Social Networks and People’s PsychologyOnline Social Networks and People’s Psychology Bibliography

  5. Broward County Online Solar Permitting (Florida)

    Broader source: Energy.gov [DOE]

    Broward County now offers Go SOLAR Online Permitting*, for rooftop solar photovoltaic system permitting. This online permitting system may be used for residential or low commercial properties that...

  6. Microsoft Word - Accessing Online COR Training

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

    Registering for DAU Online Course CLC 222, Contracting Officer's Representative Training To register for this, and any other DAU online course, you must first register in the...

  7. Nobel Lecture Series Videos Now Available Online

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

    Lecture Series Videos Now Available Online Nobel Lecture Videos Now Available Online May 29, 2014 by Kathy Kincade (0 Comments) Three of the NERSC Nobel Lecture Series videos --...

  8. Matter: Space without Time

    E-Print Network [OSTI]

    Yousef Ghazi-Tabatabai

    2012-11-19T23:59:59.000Z

    While Quantum Gravity remains elusive and Quantum Field Theory retains the interpretational difficulties of Quantum Mechanics, we have introduced an alternate approach to the unification of particles, fields, space and time, suggesting that the concept of matter as space without time provides a framework which unifies matter with spacetime and in which we anticipate the development of complete theories (ideally a single unified theory) describing observed 'particles, charges, fields and forces' solely with the geometry of our matter-space-time universe.

  9. Energy Matters Mailbag

    Broader source: Energy.gov [DOE]

    This edition of the mailbag tackles follow-up questions from our Energy Matters discussion on breaking our reliance on foreign oil.

  10. Dipolar Dark Matter

    E-Print Network [OSTI]

    Blanchet, Luc

    2015-01-01T23:59:59.000Z

    Massive gravity theories have been developed as viable IR modifications of gravity motivated by dark energy and the problem of the cosmological constant. On the other hand, modified gravity and modified dark matter theories were developed with the aim of solving the problems of standard cold dark matter at galactic scales. Here we propose to adapt the framework of ghost-free massive bigravity theories to reformulate the problem of dark matter at galactic scales. We investigate a promising alternative to dark matter called dipolar dark matter (DDM) in which two different species of dark matter are separately coupled to the two metrics of bigravity and are linked together by an internal vector field. We show that this model successfully reproduces the phenomenology of dark matter at galactic scales (i.e. MOND) as a result of a mechanism of gravitational polarisation. The model is safe in the gravitational sector, but because the two types of dark matter interact through the vector field, a ghostly degree of fre...

  11. Dark matter and cosmology

    SciTech Connect (OSTI)

    Schramm, D.N.

    1992-03-01T23:59:59.000Z

    The cosmological dark matter problem is reviewed. The Big Bang Nucleosynthesis constraints on the baryon density are compared with the densities implied by visible matter, dark halos, dynamics of clusters, gravitational lenses, large-scale velocity flows, and the {Omega} = 1 flatness/inflation argument. It is shown that (1) the majority of baryons are dark; and (2) non-baryonic dark matter is probably required on large scales. It is also noted that halo dark matter could be either baryonic or non-baryonic. Descrimination between ``cold`` and ``hot`` non-baryonic candidates is shown to depend on the assumed ``seeds`` that stimulate structure formation. Gaussian density fluctuations, such as those induced by quantum fluctuations, favor cold dark matter, whereas topological defects such as strings, textures or domain walls may work equally or better with hot dark matter. A possible connection between cold dark matter, globular cluster ages and the Hubble constant is mentioned. Recent large-scale structure measurements, coupled with microwave anisotropy limits, are shown to raise some questions for the previously favored density fluctuation picture. Accelerator and underground limits on dark matter candidates are also reviewed.

  12. Dark matter and cosmology

    SciTech Connect (OSTI)

    Schramm, D.N.

    1992-03-01T23:59:59.000Z

    The cosmological dark matter problem is reviewed. The Big Bang Nucleosynthesis constraints on the baryon density are compared with the densities implied by visible matter, dark halos, dynamics of clusters, gravitational lenses, large-scale velocity flows, and the {Omega} = 1 flatness/inflation argument. It is shown that (1) the majority of baryons are dark; and (2) non-baryonic dark matter is probably required on large scales. It is also noted that halo dark matter could be either baryonic or non-baryonic. Descrimination between cold'' and hot'' non-baryonic candidates is shown to depend on the assumed seeds'' that stimulate structure formation. Gaussian density fluctuations, such as those induced by quantum fluctuations, favor cold dark matter, whereas topological defects such as strings, textures or domain walls may work equally or better with hot dark matter. A possible connection between cold dark matter, globular cluster ages and the Hubble constant is mentioned. Recent large-scale structure measurements, coupled with microwave anisotropy limits, are shown to raise some questions for the previously favored density fluctuation picture. Accelerator and underground limits on dark matter candidates are also reviewed.

  13. MA 15400 ONLINE Fall 2014 Syllabus

    E-Print Network [OSTI]

    Delworth, Timothy J

    2014-09-14T23:59:59.000Z

    MA 15400 ONLINE Fall 2014 Syllabus. TEXTBOOK. COURSE WEBSITE. RECORDED LESSONS. HOMEWORK. QUIZZES. EXAMS. CALCULATORS. OFFICE ...

  14. MA 15400 ONLINE Spring 2015 Syllabus

    E-Print Network [OSTI]

    Delworth, Timothy J

    2015-01-06T23:59:59.000Z

    MA 15400 ONLINE Spring 2015 Syllabus. TEXTBOOK. COURSE WEBSITE. RECORDED LESSONS. HOMEWORK. QUIZZES. EXAMS. CALCULATORS.

  15. Ice particle size matters | EMSL

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

    Ice particle size matters Ice particle size matters Released: May 04, 2014 Fine-tuning cloud models for improved climate predictions The Science Arctic clouds are widespread and...

  16. HeinOnline --33 Nat. Resources J. 569 1993 HeinOnline --33 Nat. Resources J. 570 1993

    E-Print Network [OSTI]

    Brown, Gregory G.

    HeinOnline -- 33 Nat. Resources J. 569 1993 #12;HeinOnline -- 33 Nat. Resources J. 570 1993 #12;HeinOnline -- 33 Nat. Resources J. 571 1993 #12;HeinOnline -- 33 Nat. Resources J. 572 1993 #12;HeinOnline -- 33 Nat. Resources J. 573 1993 #12;HeinOnline -- 33 Nat. Resources J. 574 1993 #12;HeinOnline -- 33

  17. Groundwater Report Goes Online, Interactive

    Broader source: Energy.gov [DOE]

    RICHLAND, Wash. – EM’s Richland Operations Office (RL) has moved its 1,200-page annual report on groundwater monitoring to a fully online and interactive web application.

  18. Sec. Chu Online Town Hall

    Broader source: Energy.gov [DOE]

    Secretary Steven Chu hosted an online town hall to discuss the clean energy and innovation agenda President Obama laid out in his 2011 State of the Union address. (January 26, 2011)

  19. DIPARTIMENTO DI MATEMATICA - Optimization Online

    E-Print Network [OSTI]

    Filippo Riccio

    2010-11-28T23:59:59.000Z

    on-line data analysis is needed. ... the output data of a detector contain a sample of noise, thus the optimization problem .... solar mass; the SNR is equal to 10. 5 ...

  20. aerospace team online: Topics by E-print Network

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

    1 Aerospace Engineering Online by the SEAS Materials Science Websites Summary: Aerospace Engineering Online by the SEAS UCLA MS Engineering Online, msenrgol.seas.ucla.edu Area is...

  1. Hot and dark matter

    E-Print Network [OSTI]

    D'Eramo, Francesco

    2012-01-01T23:59:59.000Z

    In this thesis, we build new Effective Field Theory tools to describe the propagation of energetic partons in hot and dense media, and we propose two new reactions for dark matter in the early universe. In the first part, ...

  2. Programmable matter by folding

    E-Print Network [OSTI]

    Wood, R. J.

    Programmable matter is a material whose properties can be programmed to achieve specific shapes or stiffnesses upon command. This concept requires constituent elements to interact and rearrange intelligently in order to ...

  3. The Heart of Matter

    E-Print Network [OSTI]

    Rohini M. Godbole

    2010-06-30T23:59:59.000Z

    In this article I trace the development of the human understanding of the "Heart of Matter" from early concepts of "elements" (or alternatively "Panchmahabhootas") to the current status of "quarks" and "leptons" as the fundamental constituents of matter, interacting together via exchange of the various force carrier particles called "gauge bosons" such as the photon, W/Z-boson etc. I would like to show how our understanding of the fundamental constituents of matter has gone hand in hand with our understanding of the fundamental forces in nature. I will also outline how the knowledge of particle physics at the "micro" scale of less than a Fermi(one millionth of a nanometer), enables us to offer explanations of Cosmological observations at the "macro" scale. Consequently these observations, may in turn, help us address some very fundamental questions of the Physics at the "Heart of the Matter".

  4. Matter & Energy Electronics

    E-Print Network [OSTI]

    Suslick, Kenneth S.

    See also: Matter & Energy Electronics· Detectors· Technology· Construction· Sports Science Electronic Tongue Tastes Wine Variety, Vintage (Aug. 12, 2008) -- You don't need a wine expert to Advance

  5. Gaseous dark matter detectors

    E-Print Network [OSTI]

    Martoff, C. J.

    Dark matter (DM) detectors with directional sensitivity have the potential of yielding an unambiguous positive observation of WIMPs as well as discriminating between galactic DM halo models. In this paper, we introduce the ...

  6. High density matter

    E-Print Network [OSTI]

    J. R. Stone

    2013-02-11T23:59:59.000Z

    The microscopic composition and properties of matter at super-saturation densities have been the subject of intense investigation for decades. The scarcity of experimental and observational data has lead to the necessary reliance on theoretical models. However, there remains great uncertainty in these models, which, of necessity, have to go beyond the over-simple assumption that high density matter consists only of nucleons and leptons. Heavy strange baryons, mesons and quark matter in different forms and phases have to be included to fulfil basic requirements of fundamental laws of physics. In this review the latest developments in construction of the Equation of State (EoS) of high-density matter at zero and finite temperature assuming different composition of the matter are surveyed. Critical comparison of model EoS with available observational data on neutron stars, including gravitational masses, radii and cooling patterns is presented. The effect of changing rotational frequency on the composition of neutron stars during their lifetime is demonstrated. Compatibility of EoS of high-density, low temperature compact objects and low density, high temperature matter created in heavy-ion collisions is discussed.

  7. Phase transition from hadronic matter to quark matter

    E-Print Network [OSTI]

    P. Wang; A. W. Thomas; A. G. Williams

    2007-04-03T23:59:59.000Z

    We study the phase transition from nuclear matter to quark matter within the SU(3) quark mean field model and NJL model. The SU(3) quark mean field model is used to give the equation of state for nuclear matter, while the equation of state for color superconducting quark matter is calculated within the NJL model. It is found that at low temperature, the phase transition from nuclear to color superconducting quark matter will take place when the density is of order 2.5$\\rho_0$ - 5$\\rho_0$. At zero density, the quark phase will appear when the temperature is larger than about 148 MeV. The phase transition from nuclear matter to quark matter is always first order, whereas the transition between color superconducting quark matter and normal quark matter is second order.

  8. Thermodynamics of clusterized matter

    E-Print Network [OSTI]

    Ad. R. Raduta; F. Gulminelli

    2009-08-26T23:59:59.000Z

    Thermodynamics of clusterized matter is studied in the framework of statistical models with non-interacting cluster degrees of freedom. At variance with the analytical Fisher model, exact Metropolis simulation results indicate that the transition from homogeneous to clusterized matter lies along the $\\rho=\\rho_0$ axis at all temperatures and the limiting point of the phase diagram is not a critical point even if the surface energy vanishes at this point. Sensitivity of the inferred phase diagram to the employed statistical framework in the case of finite systems is discussed by considering the grand-canonical and constant-pressure canonical ensembles. A Wigner-Seitz formalism in which the fragment charge is neutralized by an uniform electron distribution allows to build the phase diagram of neutron star matter.

  9. Axion Dark Matter Searches

    E-Print Network [OSTI]

    I. Stern

    2014-03-21T23:59:59.000Z

    Nearly all astrophysical and cosmological data point convincingly to a large component of cold dark matter in the Universe. The axion particle, first theorized as a solution to the strong charge-parity problem of quantum chromodynamics, has been established as a prominent CDM candidate. Cosmic observation and particle physics experiments have bracketed the unknown mass of the axion between approximately a $\\mu$eV and a meV. The Axion Dark Matter eXperiement (ADMX) has successfully completed searches between 1.9 and 3.7 $\\mu$eV down to the KSVZ photon-coupling limit. ADMX and the Axion Dark Matter eXperiement High-Frequency (ADMX-HF) will search for axions at weaker coupling and/or higher frequencies within the next few years. Status of the experiments, current research and development, and projected mass-coupling exclusion limits are presented.

  10. Axion dark matter searches

    SciTech Connect (OSTI)

    Stern, Ian P. [Department of Physics, Univerisity of Florida, Gainesville, FL 32611-8440 (United States); Collaboration: ADMX Collaboration; ADMX-HF Collaboration

    2014-06-24T23:59:59.000Z

    Nearly all astrophysical and cosmological data point convincingly to a large component of cold dark matter in the Universe. The axion particle, first theorized as a solution to the strong charge-parity problem of quantum chromodynamics, has been established as a prominent CDM candidate. Cosmic observation and particle physics experiments have bracketed the unknown mass of the axion between approximately a ?eV and a meV. The Axion Dark Matter eXperiement (ADMX) has successfully completed searches between 1.9 and 3.7 ?eV down to the KSVZ photon-coupling limit. ADMX and the Axion Dark Matter eXperiement High-Frequency (ADMX-HF) will search for axions at weaker coupling and/or higher frequencies within the next few years. Status of the experiments, current research and development, and projected mass-coupling exclusion limits are presented.

  11. Online Auctions: Theoretical and Empirical Investigations 

    E-Print Network [OSTI]

    Zhang, Yu

    2010-10-12T23:59:59.000Z

    This dissertation, which consists of three essays, studies online auctions both theoretically and empirically. The first essay studies a special online auction format used by eBay, “Buy-It- Now” (BIN) auctions, in which ...

  12. Online optimization in routing and scheduling

    E-Print Network [OSTI]

    Wagner, Michael R. (Michael Robert), 1978-

    2006-01-01T23:59:59.000Z

    In this thesis we study online optimization problems in routing and scheduling. An online problem is one where the problem instance is revealed incrementally. Decisions can (and sometimes must) be made before all information ...

  13. Policy -Online Business Management Certificate Program

    E-Print Network [OSTI]

    Hanson, Stephen José

    Advisor-Instructor's assignments. Refund Policy (for Online Certificate program only - Lean Six Sigma programs. Grievance Policy If you are a participant in our Online Certificate Program or Lean/Six Sigma

  14. Online Energy Generation Scheduling for Microgrids with

    E-Print Network [OSTI]

    Zhang, Junshan

    Online Energy Generation Scheduling for Microgrids with Intermittent Energy Sources and Co entitled: Online Energy Generation Scheduling for Microgrids with Intermittent Energy Sources and Co schedul- ing. However, accurate prediction cannot be guaranteed due to the small scale of microgrids

  15. Online Games, Virtual Worlds, and Social Networks

    E-Print Network [OSTI]

    Hemmers, Oliver

    JOUR 447: Online Games, Virtual Worlds, and Social Networks Virtual Island Making #12;One element in the look and design of the virtual islands. JOUR 447: Online Games, Virtual Worlds, and Social Networks

  16. PPP -Test av online tjenester Precise point positioning -online processing services

    E-Print Network [OSTI]

    Santerre, Rock

    PPP - Test av online tjenester Precise point positioning - online processing services Halvor Vadder for seg Presice Point Positioning og undersøker ulike online tjenester som benytter seg av PPP som on Presice Point Positioning examines various online services that uses PPP as the method of calculation

  17. Social Networks and Online Privacy Concerns Survey The Social Networks and Online Privacy Concerns Survey

    E-Print Network [OSTI]

    Kaiser, Gail E.

    Social Networks and Online Privacy Concerns Survey The Social Networks and Online Privacy Concerns Survey The Social Networks and Online Privacy Concerns Survey is part of a research project survey #12;0% 100% Yes Unsure No Yes Unsure No Social Networks and Online Privacy Concerns Survey

  18. Optimization Online - Stochastic Programming Submissions - 2008

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  19. Optimization Online - Nonlinear Optimization Submissions - 2003

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  20. Optimization Online - Stochastic Programming Submissions - 2009

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  1. Optimization Online - Stochastic Programming Submissions - 2006

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  2. Optimization Online - Nonlinear Optimization Submissions - 2001

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  3. Optimization Online - Stochastic Programming Submissions - 2001

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  4. Optimization Online - Stochastic Programming Submissions - 2007

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  5. Optimization Online - Global Optimization Submissions - 2007

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  6. Optimization Online - Stochastic Programming Submissions - 2003

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  7. Optimization Online - Global Optimization Submissions - 2001

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  8. Optimization Online - Stochastic Programming Submissions - 2002

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  9. Optimization Online - Stochastic Programming Submissions - 2004

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  10. Optimization Online - Nonlinear Optimization Submissions - 2000

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  11. Optimization Online - Combinatorial Optimization Submissions - 2002

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  12. Optimization Online - Stochastic Programming Submissions - 2005

    E-Print Network [OSTI]

    Optimization Online is supported by the Mathematical Programming Society and by the Optimization Technology Center. Mathematical Programming Society.

  13. Online learning processes artificial neural networks

    E-Print Network [OSTI]

    Heskes, Tom

    On­line learning processes in artificial neural networks Tom M. Heskes Bert Kappen Department, The Netherlands. Abstract We study on­line learning processes in artificial neural networks from a general point. Elsevier, pages 199-- 233. #12; On­line learning processes in artificial neural networks 1 1 Introduction 1

  14. Distributed Online Frequency Assignment in Cellular Networks ?

    E-Print Network [OSTI]

    Devoto, Stephen H.

    Distributed Online Frequency Assignment in Cellular Networks ? (Extended Abstract) Jeannette a general framework for studying distributed online frequency assignment in cellular networks. The problem at the corresponding network cell. In this setting, we present several distributed online algorithms for this problem

  15. Dark matter axions `96

    SciTech Connect (OSTI)

    Sikivie, P.

    1996-12-31T23:59:59.000Z

    This report discusses why axions have been postulated to exist, what cosmology implies about their presence as cold dark matter in the galactic halo, how axions might be detected in cavities wherein strong magnetic fields stimulate their conversion into photons, and relations between axions` energy spectra and galactic halos` properties.

  16. Matter & Energy Solar Energy

    E-Print Network [OSTI]

    Rogers, John A.

    See Also: Matter & Energy Solar Energy· Electronics· Materials Science· Earth & Climate Energy at the University of Illinois, the future of solar energy just got brighter. Although silicon is the industry Electronics Over 1.2 Million Electronics Parts, Components and Equipment. www.AlliedElec.com solar energy

  17. Matter & Energy Engineering

    E-Print Network [OSTI]

    Sóbester, András

    .com/products/seahawk/ Maryland Solar Panels-- Solar Installations from BGE HOME $0 Down For Big Energy Savings! www.bgehome.com/SolarLike 6 0 | More APA MLA See Also: Matter & Energy Petroleum Engineering Fossil Fuels Earth believe may be contributing to global warming. The UK government has just announced it is investing £1

  18. Asymmetric condensed dark matter

    E-Print Network [OSTI]

    Aguirre, Anthony

    2015-01-01T23:59:59.000Z

    We explore the viability of a boson dark matter candidate with an asymmetry between the number densities of particles and antiparticles. A simple thermal field theory analysis confirms that, under certain general conditions, this component would develop a Bose-Einstein condensate in the early universe that, for appropriate model parameters, could survive the ensuing cosmological evolution until now. The condensation of a dark matter component in equilibrium with the thermal plasma is a relativistic process, hence the amount of matter dictated by the charge asymmetry is complemented by a hot relic density frozen out at the time of decoupling. Contrary to the case of ordinary WIMPs, dark matter particles in a condensate can be very light, $10^{-22}\\,{\\rm eV} \\lesssim m \\lesssim 10^2\\,{\\rm eV}$; the lower limit arises from constraints on small-scale structure formation, while the upper bound ensures that the density from thermal relics is not too large. Big-Bang nucleosynthesis constrains the temperature of deco...

  19. Energy Matters in Washington State Page 1 Energy Matters

    E-Print Network [OSTI]

    Collins, Gary S.

    Energy Matters in Washington State ­ Page 1 Energy Matters in Washington State June 2008 Updated November 2009 Updated and Revised October 2013 Grand Coulee Dam #12;Energy Matters in Washington State ­ Page 2 Copyright © 2013 Washington State University Energy Program. 905 Plum Street SE, P.O. Box 43169

  20. Self assembly in soft matter 

    E-Print Network [OSTI]

    Chremos, Alexandros

    2009-01-01T23:59:59.000Z

    The term “soft matter” applies to a variety of physical systems, such as liquids, colloids, polymers, foams, gels, and granular materials. The most fascinating aspect of soft matter lies in the fact that they are not ...

  1. Self Assembly in Soft Matter 

    E-Print Network [OSTI]

    Chremos, Alexandros

    2009-01-01T23:59:59.000Z

    The term “soft matter” applies to a variety of physical systems, such as liquids, colloids, polymers, foams, gels, and granular materials. The most fascinating aspect of soft matter lies in the fact that they are not ...

  2. The Search for Dark Matter

    ScienceCinema (OSTI)

    Orrell, John

    2014-07-24T23:59:59.000Z

    More than 25 years ago, PNNL scientists began the first underground measurements searching for dark matter using specialized radiation detector technology. Dark matter is yet to be discovered says Physicist John L. Orrell.

  3. The Search for Dark Matter

    SciTech Connect (OSTI)

    Orrell, John

    2013-11-20T23:59:59.000Z

    More than 25 years ago, PNNL scientists began the first underground measurements searching for dark matter using specialized radiation detector technology. Dark matter is yet to be discovered says Physicist John L. Orrell.

  4. Canal Superior Online Pas: Portugal

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    PROGRAMASDEINFORMAÇÃO REPORTAGEM ÚLTIMAS TURBINA EÓLICA DO IST CONSIDERADO «PROJETO INOVADOR DO ANO» O conceito de uma turbina eólica, que permite a produção de energia a um menor custo, venceu o prémio «Projeto Inovador do Superior Informação Online Partilhar TURBINA EÓLICA DO IST CONSIDERADO «PROJETO INOVADOR DO ANO» O conceito

  5. GOLDSMITHS Research Online Stewart, Lauren

    E-Print Network [OSTI]

    Miranda, Eduardo Reck

    GOLDSMITHS Research Online Article Stewart, Lauren Universal dyslexia? You may cite this version as: Stewart, Lauren. 2001. Universal dyslexia? Trends in Cognitive Sciences, 5(5), p. 188. ISSN 1364://eprints.goldsmiths.ac.uk Originally published: Stewart, Lauren (2001) `Universal Dyslexia?' TRENDS in Cognitive Sciences Vol.5 No.5

  6. Free Energy Code Online Discussion

    E-Print Network [OSTI]

    Free Energy Code Online Discussion for Building Department Personnel Join us for this FREE 90 Bruce Cheney from Anchors Aweigh Energy, LLC want to hear from YOU on residential HVAC changeout issues of the California Energy Commission. Date: 3 dates currently offered, choose the one that works for you

  7. Online Search Aids Petroleum Abstracts

    E-Print Network [OSTI]

    Reynolds, Albert C.

    to enter the words for the query. The center frame will display the list of terms resulting from the queryOnline Search Aids User Guide Petroleum Abstracts® A Division of The University of Tulsa July 1. A compilation of relevant E&P technical index terms and their relationships, covering the areas of geology

  8. Normal matter storage of antiprotons

    SciTech Connect (OSTI)

    Campbell, L.J.

    1987-01-01T23:59:59.000Z

    Various simple issues connected with the possible storage of anti p in relative proximity to normal matter are discussed. Although equilibrium storage looks to be impossible, condensed matter systems are sufficiently rich and controllable that nonequilibrium storage is well worth pursuing. Experiments to elucidate the anti p interactions with normal matter are suggested. 32 refs.

  9. dark matter dark energy inflation

    E-Print Network [OSTI]

    Hu, Wayne

    theory dark matter dark energy inflation The National Science Foundation The Kavli Foundation NSF Site Review November 28-29, 2005 #12;dark matter dark energy inflation NSF Site Visit ­ November 28 Gravitation initial conditions beyond single-field slow roll #12;dark matter dark energy inflation NSF Site

  10. Dark Energy and Dark Matter

    E-Print Network [OSTI]

    Keith A. Olive

    2010-01-27T23:59:59.000Z

    A brief overview of our current understanding of abundance and properties of dark energy and dark matter is presented. A more focused discussion of supersymmetric dark matter follows. Included is a frequentist approach to the supersymmetric parameter space and consequences for the direct detection of dark matter.

  11. Particulate matter dynamics

    E-Print Network [OSTI]

    Cionco, Rodolfo G; Caligaris, Marta G

    2012-01-01T23:59:59.000Z

    A substantial fraction of the particulate matter released into the atmosphere by industrial or natural processes corresponds to particles whose aerodynamic diameters are greater than 50 mm. It has been shown that, for these particles, the classical description of Gaussian plume diffusion processes, is inadequate to describe the transport and deposition. In this paper we present new results concerning the dispersion of coarse particulate matter. The simulations are done with our own code that uses the Bulirsch Stoer numerical integrator to calculate threedimensional trajectories of particles released into the environment under very general conditions. Turbulent processes are simulated by the Langevin equation and weather conditions are modeled after stable (Monin-Obukhov length L> 0) and unstable conditions (L <0). We present several case studies based on Monte Carlo simulations and discusses the effect of weather on the final deposition of these particles.

  12. Constraining Decaying Dark Matter

    E-Print Network [OSTI]

    Ran Huo

    2011-07-13T23:59:59.000Z

    We revisited the decaying dark matter (DDM) model, in which one collisionless particle decays early into two collisionless particles, that are potentially dark matter particles today. The effect of DDM will be manifested in the cosmic microwave background (CMB) and structure formation. With a systematic modification of CMB calculation tool \\texttt{camb}, we can numerically calculated this effect, and compare it to observations. Further Markov Chain Monte Carlo \\texttt{cosmomc} runnings update the constraints in that model: the free streaming length $\\lambda_{FS}\\lesssim0.5$Mpc for nonrelativistic decay, and $((M_{DDM}/keV) Y)^2 (T_d/yr)\\lesssim5\\times10^{-5}$ for relativistic decay.

  13. Dark matter particles

    E-Print Network [OSTI]

    V. Berezinsky

    1996-10-31T23:59:59.000Z

    The baryonic and cold dark matter are reviewed in the context of cosmological models. The theoretical search for the particle candidates is limited by supersymmetric extension of the Standard Model. Generically in such models there are just two candidates associated with each other: generalized neutralino, which components are usual neutralino and axino, and axion which is a partner of axino in supermultiplet. The status of these particles as DM candidates is described.

  14. Luminous Dark Matter

    E-Print Network [OSTI]

    Brian Feldstein; Peter W. Graham; Surjeet Rajendran

    2011-01-13T23:59:59.000Z

    We propose a dark matter model in which the signal in direct detection experiments arises from electromagnetic, not nuclear, energy deposition. This can provide a novel explanation for DAMA while avoiding many direct detection constraints. The dark matter state is taken nearly degenerate with another state. These states are naturally connected by a dipole moment operator, which can give both the dominant scattering and decay modes between the two states. The signal at DAMA then arises from dark matter scattering in the Earth into the excited state and decaying back to the ground state through emission of a single photon in the detector. This model has unique signatures in direct detection experiments. The density and chemical composition of the detector is irrelevant, only the total volume affects the event rate. In addition, the spectrum is a monoenergetic line, which can fit the DAMA signal well. This model is readily testable at experiments such as CDMS and XENON100 if they analyze their low-energy, electronic recoil events.

  15. Dark matter axions revisited

    SciTech Connect (OSTI)

    Visinelli, Luca; Gondolo, Paolo [Department of Physics, University of Utah, 115 S 1400 E 201, Salt Lake City, Utah 84102 (United States)

    2009-08-01T23:59:59.000Z

    We study for what specific values of the theoretical parameters the axion can form the totality of cold dark matter. We examine the allowed axion parameter region in the light of recent data collected by the WMAP5 mission plus baryon acoustic oscillations and supernovae, and assume an inflationary scenario and standard cosmology. We also upgrade the treatment of anharmonicities in the axion potential, which we find important in certain cases. If the Peccei-Quinn symmetry is restored after inflation, we recover the usual relation between axion mass and density, so that an axion mass m{sub a}=(85{+-}3) {mu}eV makes the axion 100% of the cold dark matter. If the Peccei-Quinn symmetry is broken during inflation, the axion can instead be 100% of the cold dark matter for m{sub a}<15 meV provided a specific value of the initial misalignment angle {theta}{sub i} is chosen in correspondence to a given value of its mass m{sub a}. Large values of the Peccei-Quinn symmetry breaking scale correspond to small, perhaps uncomfortably small, values of the initial misalignment angle {theta}{sub i}.

  16. Hidden vector dark matter

    E-Print Network [OSTI]

    Thomas Hambye

    2010-03-16T23:59:59.000Z

    We show that dark matter could be made of massive gauge bosons whose stability doesn't require to impose by hand any discrete or global symmetry. Stability of gauge bosons can be guaranteed by the custodial symmetry associated to the gauge symmetry and particle content of the model. The particle content we consider to this end is based on a hidden sector made of a vector multiplet associated to a non-abelian gauge group and of a scalar multiplet charged under this gauge group. The hidden sector interacts with the Standard Model particles through the Higgs portal quartic scalar interaction in such a way that the gauge bosons behave as thermal WIMPS. This can lead easily to the observed dark matter relic density in agreement with the other various constraints, and can be tested experimentally in a large fraction of the parameter space. In this model the dark matter direct detection rate and the annihilation cross section can decouple if the Higgs portal interaction is weak.

  17. HeinOnline --47 J. Legal Educ. 297 1997 HeinOnline --47 J. Legal Educ. 298 1997

    E-Print Network [OSTI]

    Sheridan, Jennifer

    HeinOnline -- 47 J. Legal Educ. 297 1997 #12;HeinOnline -- 47 J. Legal Educ. 298 1997 #12;HeinOnline -- 47 J. Legal Educ. 299 1997 #12;HeinOnline -- 47 J. Legal Educ. 300 1997 #12;HeinOnline -- 47 J. Legal Educ. 301 1997 #12;HeinOnline -- 47 J. Legal Educ. 302 1997 #12;HeinOnline -- 47 J. Legal Educ. 303

  18. Online circuit breaker monitoring system

    E-Print Network [OSTI]

    Djekic, Zarko

    2008-10-10T23:59:59.000Z

    of Department, Costas N. Georghiades December 2007 Major Subject: Electrical Engineering iii ABSTRACT Online Circuit Breaker Monitoring System. (December 2007) Zarko Djekic, B.S., University of Novi Sad, Serbia Chair of Advisory..., this work would not be possible. I would also like to thank the members of my committee, Dr. Chanan Singh, Dr. Sunil Khatri and Dr. William Lively for their advice and patience. Special thanks also go to Center Point Energy personnel Don Sevcik and John...

  19. Online circuit breaker monitoring system

    E-Print Network [OSTI]

    Djekic, Zarko

    2009-05-15T23:59:59.000Z

    of Department, Costas N. Georghiades December 2007 Major Subject: Electrical Engineering iii ABSTRACT Online Circuit Breaker Monitoring System. (December 2007) Zarko Djekic, B.S., University of Novi Sad, Serbia Chair of Advisory..., this work would not be possible. I would also like to thank the members of my committee, Dr. Chanan Singh, Dr. Sunil Khatri and Dr. William Lively for their advice and patience. Special thanks also go to Center Point Energy personnel Don Sevcik and John...

  20. Superconnections and Matter

    E-Print Network [OSTI]

    Roepstorff, G

    1998-01-01T23:59:59.000Z

    In a previous paper, the superconnection formalism was used to naturally fit the Higgs field into a U(n) gauge theory where we aimed at the reconstruction of the standard model. The approach provides an alternative to non-commutative geometry. This work is now continued by including matter field (leptons). The essentially new ingredient is the right-handed neutrino field and a new kind of interaction that goes with it. All interactions follow from one Dirac operator associated to a superconnection.

  1. Superconnections and Matter

    E-Print Network [OSTI]

    G. Roepstorff

    2000-08-17T23:59:59.000Z

    In a previous paper (hep-th/9801040), the superconnection formalism was used to fit the Higgs field into a U(n) gauge theory with particular emphasis on the n=2 case, aiming at the reconstruction of certain parts of the Standard Model. The approach provides an alternative to the one bases on non-commutative geometry. This work is continued by including matter fields (leptons only). We extend the Standard Model by including the right-handed neutrino field. The possibility of a finite neutrino mass is thus accounted for.

  2. Thermodynamics of electroweak matter

    E-Print Network [OSTI]

    A. Gynther

    2006-09-21T23:59:59.000Z

    This paper is a slightly modified version of the introductory part of a PhD thesis, also containing the articles hep-ph/0303019, hep-ph/0510375 and hep-ph/0512177. We provide a short history of the research of electroweak thermodynamics and a brief introduction to the theory as well as to the necessary theoretical tools needed to work at finite temperatures. We then review computations regarding the pressure of electroweak matter at high temperatures (the full expression of the perturbative expansion of the pressure is given in the appendix) and the electroweak phase diagram at finite chemical potentials. Finally, we compare electroweak and QCD thermodynamics.

  3. Discrete dark matter

    SciTech Connect (OSTI)

    Hirsch, M.; Morisi, S.; Peinado, E.; Valle, J. W. F. [AHEP Group, Institut de Fisica Corpuscular--C.S.I.C./Universitat de Valencia, Edificio Institutos de Paterna, Apartado 22085, E-46071 Valencia (Spain)

    2010-12-01T23:59:59.000Z

    We propose a new motivation for the stability of dark matter (DM). We suggest that the same non-Abelian discrete flavor symmetry which accounts for the observed pattern of neutrino oscillations, spontaneously breaks to a Z{sub 2} subgroup which renders DM stable. The simplest scheme leads to a scalar doublet DM potentially detectable in nuclear recoil experiments, inverse neutrino mass hierarchy, hence a neutrinoless double beta decay rate accessible to upcoming searches, while {theta}{sub 13}=0 gives no CP violation in neutrino oscillations.

  4. Particulate Matter Aerosols

    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 for4,645 3,625 1,006 492 742EnergyOnItemResearch > TheNuclear Astrophysics OneOutreach EffortsSearchParticulate Matter

  5. Dark Matter Theory

    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 Power Administration wouldDECOMPOSITION OFSupplemental TechnologySummaryDariuszDark Matter Theory

  6. Optimization Online - All Areas Submissions - January 2009

    E-Print Network [OSTI]

    Hybrid MPI/OpenMP parallel support vector machine training ... On the Optimal On-Line Management of Photovoltaic-Hydrogen Hybrid Energy Systems

  7. Optimization Online - Enter Your Password to Continue

    E-Print Network [OSTI]

    On the Optimal On-Line Management of Photovoltaic-Hydrogen Hybrid Energy Systems. Enter the Article Password: If you forgot your password, select your ...

  8. Optimization Online - Search or Browse Submissions

    E-Print Network [OSTI]

    Search or Browse Optimization Online Submissions. Google Search. Enter your search terms: name of author(s), title, keywords, journal, etc. The Web

  9. Nuclear Matter and Nuclear Dynamics

    E-Print Network [OSTI]

    M Colonna

    2009-02-26T23:59:59.000Z

    Highlights on the recent research activity, carried out by the Italian Community involved in the "Nuclear Matter and Nuclear Dynamics" field, will be presented.

  10. NERSC Online Training May 3: Navigating NERSC File Systems

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

    Online Training May 3: Navigating NERSC File Systems NERSC Online Training May 3: Navigating NERSC File Systems April 26, 2011 by Richard Gerber A NERSC training event, "Navigating...

  11. SCRM SME *ICT SCRM Training Courses on DOE Online Learning

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

    Office of the Chief Information Officer Office of Cyber Security Issue No. 15, January 2014 Secure Online Shopping For many American consumers, online shopping has become a...

  12. Corporate Training On-Site Online Global

    E-Print Network [OSTI]

    Barrett, Jeffrey A.

    MAKE THE RIGHT MOVE Corporate Training On-Site · Online · Global IMPROVE YOUR COMPETITIVE ADVANTAGE WITH WORLD-CLASS ON-SITE AND ONLINE SOLUTIONS TAILORED TO MEET YOUR BUSINESS AND EMPLOYEE TRAINING NEEDS a competitive advantage depends on how well your staff executes. UCIrvineExtension's Corporate Training helps

  13. Overlapping Community Detection by Online Cluster Aggregation

    E-Print Network [OSTI]

    Kozdoba, Mark

    2015-01-01T23:59:59.000Z

    We present a new online algorithm for detecting overlapping communities. The main ingredients are a modification of an online k-means algorithm and a new approach to modelling overlap in communities. An evaluation on large benchmark graphs shows that the quality of discovered communities compares favorably to several methods in the recent literature, while the running time is significantly improved.

  14. Online Deadline Scheduling with Bounded Energy Efficiency

    E-Print Network [OSTI]

    Wong, Prudence W.H.

    Online Deadline Scheduling with Bounded Energy Efficiency Joseph Wun-Tat Chan1 , Tak-Wah Lam 2 concern when compared to throughput and the schedules targeted may be very poor in energy efficiency subject to a user-defined threshold of energy efficiency. We first show that all deterministic online

  15. On-line secret sharing Laszlo Csirmaz

    E-Print Network [OSTI]

    Tardos, Gábor

    On-line secret sharing L´aszl´o Csirmaz G´abor Tardos Abstract In a perfect secret sharing scheme the dealer distributes shares to participants so that qualified subsets can recover the secret, while unqualified subsets have no information on the secret. In an on-line secret sharing scheme the dealer assigns

  16. THalumni.net Trinity Hall's online community

    E-Print Network [OSTI]

    Lasenby, Joan

    THalumni.net Trinity Hall's online community Joining THalumni.net allows members to: · Check or location and send a private message to other Trinity Hall members. · Join the careers directory if you or loca- tion and send Trinity Hall members a private message. · Book and pay for events online and see

  17. Cornell University's Online Aboveground Petroleum Tank

    E-Print Network [OSTI]

    Pawlowski, Wojtek

    Cornell University's Online Aboveground Petroleum Tank Inspection Program How To's Petroleum Bulk&S' Website: http://sp.ehs.cornell.edu/env/bulk-material-storage/petroleum-bulk-storage/Documents/Inspect_GD.pdf What is Cornell University's Online Aboveground Petroleum Tank Inspection Program? Cornell University

  18. Charmonium mass in nuclear matter

    E-Print Network [OSTI]

    Lee, S. H.; Ko, Che Ming.

    2003-01-01T23:59:59.000Z

    The mass shift of charmonium states in nuclear matter is studied in the perturbative QCD approach. The leading-order effect due to the change of gluon condensate in nuclear matter is evaluated using the leading-order QCD formula, while the higher...

  19. Astronomical Evidence for Dark Matter

    E-Print Network [OSTI]

    Golwala, Sunil

    weapon in "Quake 4" is the Dark Matter Gun. In Futurama they use dark matter fuel, where "one pound is 10 and neutrons, can compute relative ratio. Using nuclear reaction rates, can compute relative abundances oscillations). Peak is from maximal compression of photon-baryon fluid. Peak sensitive to curvature

  20. Energy Matters in Washington State

    E-Print Network [OSTI]

    Collins, Gary S.

    Energy Matters in Washington State Energy Matters in Washington State www.energy.wsu.edu/library/ November 2009 #12;905 Plum Street SE, Building 3 P.O. Box 43169 Olympia, Washington 98504-3169 Energy University Extension Energy Program. 905 Plum Street SE, Building 3, P.O. Box 43169, Olympia, Washington

  1. Quantum vacuum and dark matter

    E-Print Network [OSTI]

    Dragan Slavkov Hajdukovic

    2011-11-21T23:59:59.000Z

    Recently, the gravitational polarization of the quantum vacuum was proposed as alternative to the dark matter paradigm. In the present paper we consider four benchmark measurements: the universality of the central surface density of galaxy dark matter haloes, the cored dark matter haloes in dwarf spheroidal galaxies, the non-existence of dark disks in spiral galaxies and distribution of dark matter after collision of clusters of galaxies (the Bullet cluster is a famous example). Only some of these phenomena (but not all of them) can (in principle) be explained by the dark matter and the theories of modified gravity. However, we argue that the framework of the gravitational polarization of the quantum vacuum allows the understanding of the totality of these phenomena.

  2. Laser Driven Dynamic Loading of Condensed Matter

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

    Laser Driven Dynamic Loading of Condensed Matter Laser Driven Dynamic Loading of Condensed Matter Advanced diagnostics of experiments covering many orders of magnitude in strain...

  3. The Energy of Charged Matter

    E-Print Network [OSTI]

    Jan Philip Solovej

    2004-06-07T23:59:59.000Z

    In this talk I will discuss some of the techniques that have been developed over the past 35 years to estimate the energy of charged matter. These techniques have been used to solve stability of (fermionic) matter in different contexts, and to control the instability of charged bosonic matter. The final goal will be to indicate how these techniques with certain improvements can be used to prove Dyson's 1967 conjecture for the energy of a charged Bose gas--the sharp $N^{7/5}$ law.

  4. The Unification and Cogeneration of Dark Matter and Baryonic Matter

    E-Print Network [OSTI]

    S. M. Barr

    2011-09-18T23:59:59.000Z

    In grand unified theories with gauge groups larger than SU(5), the multiplets that contain the known quarks and leptons also contain fermions that are singlets under the Standard Model gauge group. Some of these could be the dark matter of the universe. Grand unified theories can also have accidental U(1) global symmetries (analogous to B-L in minimal SU(5)) that can stabilize dark matter. These ideas are illustrated in an SU(6) model.

  5. The Unification and Cogeneration of Dark Matter and Baryonic Matter

    E-Print Network [OSTI]

    Barr, S M

    2011-01-01T23:59:59.000Z

    In grand unified theories with gauge groups larger than SU(5), the multiplets that contain the known quarks and leptons also contain fermions that are singlets under the Standard Model gauge group. Some of these could be the dark matter of the universe. Grand unified theories can also have accidental U(1) global symmetries (analogous to B-L in minimal SU(5)) that can stabilize dark matter. These ideas are illustrated in an SU(6) model.

  6. HEALTH MATTERS Complimentary Hearing Screenings

    E-Print Network [OSTI]

    Roth, David B.

    . Provided by Professional Health Services My Safe Home How safe is your home? My Safe Home is an online tool designed to help families detect dangers in their home and identify simple steps to fix them. Click here. For more information, click here. Smart Fitness: Most Powerful Super Foods Tuesday, June 11, 2013 12:30pm

  7. Physical Protection of Classified Matter

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1988-02-03T23:59:59.000Z

    The order establishes policy and objectives for physical protection of classified matter. This directive does not cancel another directive. Chg 1, 7-30-93. Canceled by 5632.1C.

  8. Cosmology, Thermodynamics and Matter Creation

    E-Print Network [OSTI]

    J. A. S. Lima; M. O. Calvao; I. Waga

    2007-08-24T23:59:59.000Z

    Several approaches to the matter creation problem in the context of cosmological models are summarily reviewed. A covariant formulation of the general relativistic imperfect simple fluid endowed with a process of matter creation is presented. By considering the standard big bang model, it is shown how the recent results of Prigogine et alii \\cite{1} can be recovered and, at the same time their limits of validity are explicited.

  9. ?CDM cosmology from matter only

    E-Print Network [OSTI]

    Herman Telkamp

    2015-04-08T23:59:59.000Z

    I discuss a matter-only interpretation of {\\Lambda}CDM cosmology, based on conservation of energy and assuming a Machian definition of inertia. {\\Lambda}CDM cosmology can be linked to a Newtonian cosmic potential, subject to a propagating gravitational horizon. In a matter-only universe where total energy is conserved, Machian inertia related to the evolving potential may cause both deceleration and acceleration of recession.

  10. Shear viscosity of nuclear matter

    E-Print Network [OSTI]

    Jun Xu

    2013-02-01T23:59:59.000Z

    In this talk I report my recent study on the shear viscosity of neutron-rich nuclear matter from a relaxation time approach. An isospin- and momentum-dependent interaction is used in the study. Effects of density, temperature, and isospin asymmetry of nuclear matter on its shear viscosity have been discussed. Similar to the symmetry energy, the symmetry shear viscosity is defined and its density and temperature dependence are studied.

  11. Dark Matter Triggers of Supernovae

    E-Print Network [OSTI]

    Peter W. Graham; Surjeet Rajendran; Jaime Varela

    2015-05-17T23:59:59.000Z

    The transit of primordial black holes through a white dwarf causes localized heating around the trajectory of the black hole through dynamical friction. For sufficiently massive black holes, this heat can initiate runaway thermonuclear fusion causing the white dwarf to explode as a supernova. The shape of the observed distribution of white dwarfs with masses up to $1.25 M_{\\odot}$ rules out primordial black holes with masses $\\sim 10^{19}$ gm - $10^{20}$ gm as a dominant constituent of the local dark matter density. Black holes with masses as large as $10^{24}$ gm will be excluded if recent observations by the NuStar collaboration of a population of white dwarfs near the galactic center are confirmed. Black holes in the mass range $10^{20}$ gm - $10^{22}$ gm are also constrained by the observed supernova rate, though these bounds are subject to astrophysical uncertainties. These bounds can be further strengthened through measurements of white dwarf binaries in gravitational wave observatories. The mechanism proposed in this paper can constrain a variety of other dark matter scenarios such as Q balls, annihilation/collision of large composite states of dark matter and models of dark matter where the accretion of dark matter leads to the formation of compact cores within the star. White dwarfs, with their astronomical lifetimes and sizes, can thus act as large space-time volume detectors enabling a unique probe of the properties of dark matter, especially of dark matter candidates that have low number density. This mechanism also raises the intriguing possibility that a class of supernova may be triggered through rare events induced by dark matter rather than the conventional mechanism of accreting white dwarfs that explode upon reaching the Chandrasekhar mass.

  12. Two field matter bounce cosmology

    SciTech Connect (OSTI)

    Cai, Yi-Fu; McDonough, Evan; Duplessis, Francis; Brandenberger, Robert H., E-mail: yifucai@physics.mcgill.ca, E-mail: evanmc@physics.mcgill.ca, E-mail: francis.duplessis@mail.mcgill.ca, E-mail: rhb@hep.physics.mcgill.ca [Department of Physics, McGill University, Montréal, QC H3A 2T8 (Canada)

    2013-10-01T23:59:59.000Z

    We re-examine the non-singular Matter Bounce scenario first developed in [20], which starts with a matter-dominated period of contraction and transitions into an Ekpyrotic phase of contraction. We consider both matter fields, the first of which plays the role of regular matter, and the second of which is responsible for the non-singular bounce. Since the dominant matter field is massive, the induced curvature fluctuations are initially not scale-invariant, whereas the fluctuations of the second scalar field (which are initially entropy fluctuations) are scale-invariant. We study the transfer of the initial entropy perturbations into curvature fluctuations in the matter-dominated phase of contraction and show that the latter become nearly scale invariant on large scales but are blue tilted on small scales. We study the evolution of both curvature and entropy fluctuations through the bounce, and show that both have a scale-invariant spectrum which is blue-tilted on small scales. However, we find that the entropy fluctuations have an amplitude that is much smaller than that of the curvature perturbations, due to gravitational amplification of curvature perturbations during the bounce phase.

  13. Activity based interfaces in online social networks

    E-Print Network [OSTI]

    Laraqui, Jawad

    2007-01-01T23:59:59.000Z

    The goal of the project is to explore how activity-based interfaces can create more meaningful experiences for the users and builders of online social networking sites. Medina, a social-networking site based on the idea ...

  14. Unmasking online reflective practices in higher education 

    E-Print Network [OSTI]

    Ross, Jennifer

    2012-06-29T23:59:59.000Z

    Online reflective practices that are high-stakes – summatively assessed, or used as evidence for progression or membership in a professional body – are increasingly prevalent in higher education, especially in professional ...

  15. Online social network sensors for influenza outbreaks

    E-Print Network [OSTI]

    Everett, Katie Elizabeth

    2013-01-01T23:59:59.000Z

    Previous research has shown strong correlations between postings on the online social network Twitter where users complain of influenza-like symptoms, and clinical data on actual influenza rates. In addition, previous ...

  16. Online Learning of Non-stationary Sequences

    E-Print Network [OSTI]

    Monteleoni, Claire

    2003-06-12T23:59:59.000Z

    We consider an online learning scenario in which the learner can make predictions on the basis of a fixed set of experts. The performance of each expert may change over time in a manner unknown to the learner. We formulate ...

  17. Online Raman spectroscopy for bioprocess monitoring

    E-Print Network [OSTI]

    Gil, Gustavo Adolfo

    2005-01-01T23:59:59.000Z

    Online monitoring of bioprocesses is essential to expanding the potential of biotechnology. In this thesis, a system to estimate concentrations of chemical components of an Escherichia Coli fermentation growth medium via ...

  18. Online Display Advertising: Targeting and Intrusiveness

    E-Print Network [OSTI]

    Tucker, Catherine Elizabeth

    We use data from a large-scale field experiment to explore what influences the effectiveness of online advertising. We find that matching an ad to website content and increasing an ad's obtrusiveness independently increase ...

  19. Online Identification and Stochastic Control for Autonomous

    E-Print Network [OSTI]

    Papalambros, Panos

    Online Identification and Stochastic Control for Autonomous Internal Combustion Engines Andreas A Advanced internal combustion engine technologies have afforded an increase in the number of controllable economy, pollutant emissions, and engine acceleration. In engine use, table values are interpo- lated

  20. An Offline Foundation for Online Accountable Pseudonyms

    E-Print Network [OSTI]

    Ford, Bryan

    An Offline Foundation for Online Accountable Pseudonyms Bryan Ford Jacob Strauss Massachusetts or distributed for profit or commercial advantage and that copies bear this notice and the full citation

  1. Two-dimensional liquid chromatography system for online top-down...

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

    liquid chromatography system for online top-down mass spectrometry. Two-dimensional liquid chromatography system for online top-down mass spectrometry. Abstract: An online...

  2. Matter-antimatter asymmetry and dark matter from torsion

    SciTech Connect (OSTI)

    Poplawski, Nikodem J. [Department of Physics, Indiana University, Swain Hall West, 727 East Third Street, Bloomington, Indiana 47405 (United States)

    2011-04-15T23:59:59.000Z

    We propose a simple scenario which explains the observed matter-antimatter imbalance and the origin of dark matter in the Universe. We use the Einstein-Cartan-Sciama-Kibble theory of gravity which naturally extends general relativity to include the intrinsic spin of matter. Spacetime torsion produced by spin generates, in the classical Dirac equation, the Hehl-Datta term which is cubic in spinor fields. We show that under a charge-conjugation transformation this term changes sign relative to the mass term. A classical Dirac spinor and its charge conjugate therefore satisfy different field equations. Fermions in the presence of torsion have higher energy levels than antifermions, which leads to their decay asymmetry. Such a difference is significant only at extremely high densities that existed in the very early Universe. We propose that this difference caused a mechanism, according to which heavy fermions existing in such a Universe and carrying the baryon number decayed mostly to normal matter, whereas their antiparticles decayed mostly to hidden antimatter which forms dark matter. The conserved total baryon number of the Universe remained zero.

  3. Get Online Support, Feel Better--Sentiment Analysis and Dynamics in an Online Cancer

    E-Print Network [OSTI]

    ] from cancer and cancer treatments. Each year, many people turn to the Internet to satisfy their health offers a way to share experiences about their cancer and cancer treatment, seek solutions to daily livingGet Online Support, Feel Better--Sentiment Analysis and Dynamics in an Online Cancer Survivor

  4. Get Online Support, Feel Better--Sentiment Analysis and Dynamics in an Online Cancer

    E-Print Network [OSTI]

    Giles, C. Lee

    ] from cancer and cancer treatments. Each year, many people turn to the Internet to satisfy their health to share experiences about their cancer and cancer treatment, seek solutions to daily living issuesGet Online Support, Feel Better--Sentiment Analysis and Dynamics in an Online Cancer Survivor

  5. Dynamical dark matter. II. An explicit model

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

    Dienes, Keith R.; Thomas, Brooks

    2012-04-01T23:59:59.000Z

    In a recent paper [K. R. Dienes and B. Thomas, Phys. Rev. D 85, 083523 (2012).], we introduced “dynamical dark matter,” a new framework for dark-matter physics, and outlined its underlying theoretical principles and phenomenological possibilities. Unlike most traditional approaches to the dark-matter problem which hypothesize the existence of one or more stable dark-matter particles, our dynamical dark-matter framework is characterized by the fact that the requirement of stability is replaced by a delicate balancing between cosmological abundances and lifetimes across a vast ensemble of individual dark-matter components. This setup therefore collectively produces a time-varying cosmological dark-matter abundance, and the different dark-matter components can interact and decay throughout the current epoch. While the goal of our previous paper was to introduce the broad theoretical aspects of this framework, the purpose of the current paper is to provide an explicit model of dynamical dark matter and demonstrate that this model satisfies all collider, astrophysical, and cosmological constraints. The results of this paper therefore constitute an “existence proof” of the phenomenological viability of our overall dynamical dark-matter framework, and demonstrate that dynamical dark matter is indeed a viable alternative to the traditional paradigm of dark-matter physics. Dynamical dark matter must therefore be considered alongside other approaches to the dark-matter problem, particularly in scenarios involving large extra dimensions or string theory in which there exist large numbers of particles which are neutral under standard-model symmetries.

  6. Phi Meson in Dense Matter

    E-Print Network [OSTI]

    Ko, Che Ming; Levai, P.; Qiu, X. J.; Li, C. T.

    1992-01-01T23:59:59.000Z

    PHYSICAL REVIEW C VOLUME 45, NUMBER 3 MARCH 1992 Phi meson in dense matter C. M. Ko, P. Levai, * and X. J. Qiu Cyclotron Institute and Physics Department, Texas A &M University, College Station, Texas 77843 C. T. Li Physics Department, National... Taiwan University, Taipei, Taiwan 10764, China {Received 3 September 1991) The effect of the kaon loop correction to the property of a phi meson in dense matter is studied in the vector dominance model. Using the density-dependent kaon effective mass...

  7. GOLD: The Genomes Online Database

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kyrpides, Nikos; Liolios, Dinos; Chen, Amy; Tavernarakis, Nektarios; Hugenholtz, Philip; Markowitz, Victor; Bernal, Alex

    Since its inception in 1997, GOLD has continuously monitored genome sequencing projects worldwide and has provided the community with a unique centralized resource that integrates diverse information related to Archaea, Bacteria, Eukaryotic and more recently Metagenomic sequencing projects. As of September 2007, GOLD recorded 639 completed genome projects. These projects have their complete sequence deposited into the public archival sequence databases such as GenBank EMBL,and DDBJ. From the total of 639 complete and published genome projects as of 9/2007, 527 were bacterial, 47 were archaeal and 65 were eukaryotic. In addition to the complete projects, there were 2158 ongoing sequencing projects. 1328 of those were bacterial, 59 archaeal and 771 eukaryotic projects. Two types of metadata are provided by GOLD: (i) project metadata and (ii) organism/environment metadata. GOLD CARD pages for every project are available from the link of every GOLD_STAMP ID. The information in every one of these pages is organized into three tables: (a) Organism information, (b) Genome project information and (c) External links. [The Genomes On Line Database (GOLD) in 2007: Status of genomic and metagenomic projects and their associated metadata, Konstantinos Liolios, Konstantinos Mavromatis, Nektarios Tavernarakis and Nikos C. Kyrpides, Nucleic Acids Research Advance Access published online on November 2, 2007, Nucleic Acids Research, doi:10.1093/nar/gkm884]

    The basic tables in the GOLD database that can be browsed or searched include the following information:

    • Gold Stamp ID
    • Organism name
    • Domain
    • Links to information sources
    • Size and link to a map, when available
    • Chromosome number, Plas number, and GC content
    • A link for downloading the actual genome data
    • Institution that did the sequencing
    • Funding source
    • Database where information resides
    • Publication status and information

    (Specialized Interface)

  8. Romantic regressions : an analysis of behavior in online dating systems

    E-Print Network [OSTI]

    Fiore, Andrew Rocco Tresolini, 1979-

    2004-01-01T23:59:59.000Z

    Online personal advertisements have shed their stigma as matchmakers for the awkward to claim a prominent role in the social lives of millions of people. Web sites for online dating allow users to post lengthy personal ...

  9. Inventory planning for low demand items in online retailing

    E-Print Network [OSTI]

    Chhaochhria, Pallav

    2007-01-01T23:59:59.000Z

    A large online retailer strategically stocks inventory for SKUs with low demand. The motivations are to provide a wide range of selections and faster customer fulfillment service. We assume the online retailer has the ...

  10. LA Rooftop Solar Project Goes Online in San Fernando Valley ...

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

    LA Rooftop Solar Project Goes Online in San Fernando Valley LA Rooftop Solar Project Goes Online in San Fernando Valley June 26, 2013 - 4:52pm Addthis Installing a rooftop solar...

  11. Neutrino oscillations and dark matter

    E-Print Network [OSTI]

    K. Zuber

    1996-12-17T23:59:59.000Z

    The significance of light massive neutrinos as hot dark matter is outlined. The power of neutrino oscillation experiments with respect to detect such neutrinos in the eV-region is discussed. Present hints for neutrino oscillations in solar, atmospheric and LSND data are reviewed as well as future experiments and their potential.

  12. Laser Cooling of Matter INTRODUCTION

    E-Print Network [OSTI]

    Kaiser, Robin

    - velopment of techniques that have allowed the ion motion to be cooled into the ground state of the confiningLaser Cooling of Matter INTRODUCTION Laser cooling of neutral atoms in the past decades has been a breakthrough in the understanding of their dy- namics and led to the seminal proposals of laser cooling

  13. Magnets & Magnet Condensed Matter Science

    E-Print Network [OSTI]

    McQuade, D. Tyler

    18 No. 1 CONDENSED MATTER SCIENCE Technique development, graphene, magnetism & magnetic materials Pressure 9 Metal to Insulator Transition on the N=0 Landau Level in Graphene 10 Evidence for Fractional Quantum Hall States in Suspended Bilayer and Trilayer Graphene 11 Fractional Quantum Hall Effect

  14. Solar Neutrino Matter Effects Redux

    E-Print Network [OSTI]

    A. B. Balantekin; A. Malkus

    2011-12-19T23:59:59.000Z

    Following recent low-threshold analysis of the Sudbury Neutrino Observatory and asymmetry measurements of the BOREXINO Collaboration of the solar neutrino flux, we revisit the analysis of the matter effects in the Sun. We show that solar neutrino data constrains the mixing angle $\\theta_{13}$ poorly and that subdominant Standard Model effects can mimic the effects of the physics beyond the Standard Model.

  15. States of Matter Deepak Dhar

    E-Print Network [OSTI]

    Udgaonkar, Jayant B.

    - logical classification of different animal species) or some mixture of these (e.g. books in a library answer in this case is that states of matter is a classification scheme, like filing cabinets classification schemes could be alphabetical (e.g. in a dictionary), or based on some common properties ( zoo

  16. Apparatus for particulate matter analysis

    DOE Patents [OSTI]

    Gundel, Lara A.; Apte, Michael G.; Hansen, Anthony D.; Black, Douglas R.

    2007-01-30T23:59:59.000Z

    The apparatus described herein is a miniaturized system for particle exposure assessment (MSPEA) for the quantitative measurement and qualitative identification of particulate content in gases. The present invention utilizes a quartz crystal microbalance (QCM) or other mass-sensitive temperature compensated acoustic wave resonator for mass measurement. Detectors and probes and light sources are used in combination for the qualitative determination of particulate matter.

  17. Prokaryotic Genomes from Microbes Online Database

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Alm, Eric J.; Huang, Katherine H.; Price, Morgan N.; Koche, Richard P.; Keller, Keith; Dubchak, Inna L.; Arkin, Adam P.

    To describe the potential functions of genes, MicrobesOnline includes protein family analyses (from InterPro and COG), metabolic maps (from KEGG), links to research papers (from UniProt and PubMed), and operon predictions for every genome. To examine each gene's evolutionary history, MicrobesOnline includes precomputed phylogenetic trees for all the gene families. It displays gene trees with genomic context or it compares the gene tree to the species tree. The tools provided with MicrobesOnline allow users to: compute customized motifs, sequence alignments, and phylogenetic trees change expression patterns in metabolic maps annotate genes in various ways The database contains more than 430 genomes. A browse tree tool and a genome browser are available, along with specialized search capabilities. (Specialized Interface)

  18. Energy Matters: Our Energy Independence | Department of Energy

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

    Matters: Our Energy Independence Energy Matters: Our Energy Independence Addthis Description In this installment of the livechat series "Energy Matters," Dr. Arun Majumdar takes...

  19. Why Geology Matters: Decoding the Past, Anticipating the Future

    E-Print Network [OSTI]

    Anderson, Byron P.

    2011-01-01T23:59:59.000Z

    Review: Why Geology Matters: Decoding the Past, AnticipatingUSA Macdougall, Doug. Why Geology Matters: Decoding theE-book available. Why Geology Matters pursues two goals: to

  20. A Dynamic Near-Optimal Algorithm for Online Linear Programming

    E-Print Network [OSTI]

    Ye, Yinyu

    -time forward dynamic pricing for PEVs charging/discharging on smart-grid; Yinyu Ye Online Linear Program 2009

  1. X-ray elemental online analyzer measures volatiles

    SciTech Connect (OSTI)

    Klein, A.; Pilz, K.; Reich, K. [Indutech Instruments GmbH, Simmersfeld (Germany)

    2008-04-15T23:59:59.000Z

    The use of an online XRF analyser for determining the volatiles content of coal is outlined. 3 figs.

  2. Free Online Training on the DVU Learning Channel!

    Broader source: Energy.gov [DOE]

    Free online courses are now available through the DOE Virtual University (DVU) website on the new DVU Learning Channel

  3. Online Perfect Matching and Mobile Computing

    E-Print Network [OSTI]

    Grove, Edward F.; Kao, Ming-Yang; Krishnan, P.; Vitter, Jeffrey Scott

    1995-01-01T23:59:59.000Z

    Introduction We present an online problem related to the emerging #0Celd of mobile comput- ing #5BAwP, DKM, IDJ, USE, Wei#5D. Current trends suggest that in the near future there will be many customers with portable computing boxes, trying to connect toahuge..., and the degree of each customer is greater than 2, because intuitively, more paths help the algorithm more than adversary. References #5BAwP#5D B. Awerbuch and D. Peleg, #5CConcurrent Online Tracking of Mobile Users," Pro- ceedings of SIGCOMM 1991. #5BABK#5D Y...

  4. Online Social Network Sites and the Concept of Social Capital

    E-Print Network [OSTI]

    Steinfield, Charles

    Online Social Network Sites and the Concept of Social Capital Charles Steinfield, Nicole of online social network sites has grown dramatically, now rivaling search engines as the most visited users (Internet World Stats, 2010). Growing evidence from analyses of online social network site use

  5. Next Generation On-Line Dynamic Security Assessment

    E-Print Network [OSTI]

    Next Generation On-Line Dynamic Security Assessment Parts III and IV Final Project Report Power;Next Generation On-Line Dynamic Security Assessment Parts III and IV Final Project Report Parts III Research Center (PSERC) research project titled "Next Generation On-Line Dynamic Security Assessment

  6. Exotic Matter and Space-Time

    E-Print Network [OSTI]

    Terazawa, Hidezumi

    2013-01-01T23:59:59.000Z

    Exotic forms of matter such as carbon nanofoams, hexalambdas and strange stars, pentaquarks, color-balls, etc. and their relations to current problems in cosmo-particle physics such as dark matter and energy are discussed in some details.

  7. Dark matter axions and caustic rings

    SciTech Connect (OSTI)

    Sikivie, P.

    1997-11-01T23:59:59.000Z

    This report contains discussions on the following topics: the strong CP problem; dark matter axions; the cavity detector of galactic halo axions; and caustic rings in the density distribution of cold dark matter halos.

  8. Statistical mechanics of hot dense matter

    SciTech Connect (OSTI)

    More, R.

    1986-10-01T23:59:59.000Z

    Research on properties of hot dense matter produced with high intensity laser radiation is described in a brief informal review.

  9. Operations & Maintenance Best Practices Guide: Front Matter

    Broader source: Energy.gov [DOE]

    Guide describes the front matter of the Operations and Maintenance Best Practices: a Guide to Achieving Operational Efficiency.

  10. Nuclear matter to strange matter transition in holographic QCD

    E-Print Network [OSTI]

    Youngman Kim; Yunseok Seo; Sang-Jin Sin

    2009-11-19T23:59:59.000Z

    We construct a simple holographic QCD model to study nuclear matter to strange matter transition. The interaction of dense medium and hadrons is taken care of by imposing the force balancing condition for stable D4/D6/D6 configuration. By considering the intermediate and light flavor branes interacting with baryon vertex homogeneously distributed along R^3 space and requesting the energy minimization, we find that there is a well defined transition density as a function of current quark mass. We also find that as density goes up very high, intermediate (or heavy) and light quarks populate equally as expected from the Pauli principle. In this sense, the effect of the Pauli principle is realized as dynamics of D-branes.

  11. Personal Finance Make Your Money Matter

    E-Print Network [OSTI]

    Stevenson, Mark

    Personal Finance Make Your Money Matter Name: Registration number: Department: Year of study of your portfolio. #12;Personal Finance Make Your Money Matter2 Contents Timetable Page 3 Introduction 16 #12;Personal Finance Make Your Money Matter3 Timetable Friday 6.00 pm Introduction

  12. Online Course Syllabus STATS 7: Basic Statistics

    E-Print Network [OSTI]

    Loudon, Catherine

    Online Course Syllabus Page 1 STATS 7: Basic Statistics Summer Session I 2011 Class Meeting at UC Irvine where she has been teaching statistics for many years. She is also involved in the development of educational material for statistics, from helping to conceive a TV program for distance

  13. A "Poisoning" Attack Against Online Anomaly Detection

    E-Print Network [OSTI]

    Freytag, Johann-Christoph

    A "Poisoning" Attack Against Online Anomaly Detection Marius Kloft Department of Computer Science it is robust against targeted "poisoning" attacks. The latter have been first investigated by Nelson et al. [1 of all data points observed so far. The key idea of a poisoning attack is to insert specially crafted

  14. Online Calibration for Dynamic Traffic Constantinos Antoniou

    E-Print Network [OSTI]

    Bertini, Robert L.

    On­line Calibration for Dynamic Traffic Assignment Constantinos Antoniou October 5, 2007 Seminar­line DTA framework Demand simulator Supply simulator State estimation and model calibration Network calibration approaches include subset of these models Seminar at Portland State University 3 #12;Constantinos

  15. Welcome to the OASIS Online Tutorial

    E-Print Network [OSTI]

    Myers, Lawrence C.

    Welcome to the OASIS Online Tutorial: Understanding PTAEOg Office of Sponsored Projects 1 #12 that follow. . . B f J l 1 200Before July 1, 2007: Send question to OASIS project team: Email OASIS@dartmouth.edu. Look for a response on OASIS website. From July 16, 2007 to Sept. 1, 2007: For questions related

  16. Online Effects of Offline Ads Diane Lambert

    E-Print Network [OSTI]

    Tomkins, Andrew

    a methodology for assessing how ad campaigns in offline media such as print, audio and TV affect online in-in-difference estimation, Lift, Causal Modeling, Bootstrapping 1. INTRODUCTION Loosely speaking, an ad is effective was conducted in an offline medium such as print, radio or TV. That is, one measure of offline ad effectiveness

  17. TOEFL TUTORIAL now ONLINE with East Tennessee

    E-Print Network [OSTI]

    Karsai, Istvan

    to ETSU is NOT required. The course is being offered as a five-week ses- sion three times: Jan. 17 ­ Feb for the reading, QUESTIONS? EMAIL the instructor at mcgarry@etsu.edu or visit the web site at: http://www.etsu.edu/ professionaldevelopment ETSU On-line Registration: http://etsuaw.etsu.edu/wconnect/ace/home.htm #12;

  18. Economic Incentives for Protecting Digital Rights Online

    E-Print Network [OSTI]

    Wright , Matthew

    Economic Incentives for Protecting Digital Rights Online N. Boris Margolina, , Brian Neil Levineb propose the use of economic incentives to both limit and detect unautho- rized sharing. This approach has using direct economic incentives to discourage illegitimate shar- ing and to detect it when it occurs

  19. Online Adaptive Replanning Method for Prostate Radiotherapy

    SciTech Connect (OSTI)

    Ahunbay, Ergun E., E-mail: eahunbay@mcw.ed [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States); Peng Cheng; Holmes, Shannon; Godley, Andrew; Lawton, Colleen; Li, X. Allen [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States)

    2010-08-01T23:59:59.000Z

    Purpose: To report the application of an adaptive replanning technique for prostate cancer radiotherapy (RT), consisting of two steps: (1) segment aperture morphing (SAM), and (2) segment weight optimization (SWO), to account for interfraction variations. Methods and Materials: The new 'SAM+SWO' scheme was retroactively applied to the daily CT images acquired for 10 prostate cancer patients on a linear accelerator and CT-on-Rails combination during the course of RT. Doses generated by the SAM+SWO scheme based on the daily CT images were compared with doses generated after patient repositioning using the current planning target volume (PTV) margin (5 mm, 3 mm toward rectum) and a reduced margin (2 mm), along with full reoptimization scans based on the daily CT images to evaluate dosimetry benefits. Results: For all cases studied, the online replanning method provided significantly better target coverage when compared with repositioning with reduced PTV (13% increase in minimum prostate dose) and improved organ sparing when compared with repositioning with regular PTV (13% decrease in the generalized equivalent uniform dose of rectum). The time required to complete the online replanning process was 6 {+-} 2 minutes. Conclusion: The proposed online replanning method can be used to account for interfraction variations for prostate RT with a practically acceptable time frame (5-10 min) and with significant dosimetric benefits. On the basis of this study, the developed online replanning scheme is being implemented in the clinic for prostate RT.

  20. Journal of Climate EARLY ONLINE RELEASE

    E-Print Network [OSTI]

    Hu, Yongyun

    investigate the climate dynamic feedbacks during a transition from the present climate7 to the extremely coldJournal of Climate EARLY ONLINE RELEASE This is a preliminary PDF of the author-produced manuscript. Hu, 2011: The initiation of modern "soft Snowball" and "hard Snowball" climates in CCSM3. Part II

  1. Integrating the Digital Library into an Online

    E-Print Network [OSTI]

    de Lijser, Peter

    Integrating the Digital Library into an Online MS IDT Program JoAnn Carter-Wells, Ph.D. Karen Ivers #12; History and Structure of MISDT Program and Library Involvement Program Strands, Orientation Meetings, Program/Course Activities Range of Library Services for Distance Students Emerging Issues

  2. Supporting Online Material Materials and Methods

    E-Print Network [OSTI]

    Wolfe, Cecily J.

    1 Supporting Online Material Materials and Methods (15) For all possible earthquake pairs. The parameters chosen for window length, filter bandpass, negative sidelobe identification, and cross-correlation threshold are appropriate for high-frequency earthquakes. In order to remove false positives or poor data

  3. SUPPORTING ONLINE MATERIAL Materials and Methods

    E-Print Network [OSTI]

    Newsome, William

    SUPPORTING ONLINE MATERIAL Materials and Methods Two adult male rhesus monkeys (Macaca mulatta with a head-holding device (S1), scleral search coil for monitoring eye position (S2) and a recording chamber monkeys remain actively engaged in experiments, so precise histological identification of recording sites

  4. Geographies of an online social network

    E-Print Network [OSTI]

    Lengyel, Balázs; Ságvári, Bence; Jakobi, Ákos; Kertész, János

    2015-01-01T23:59:59.000Z

    How is online social media activity structured in the geographical space? Recent studies have shown that in spite of earlier visions about the "death of distance", physical proximity is still a major factor in social tie formation and maintenance in virtual social networks. Yet, it is unclear, what are the characteristics of the distance dependence in online social networks. In order to explore this issue the complete network of the former major Hungarian online social network is analyzed. We find that the distance dependence is weaker for the online social network ties than what was found earlier for phone communication networks. For a further analysis we introduced a coarser granularity: We identified the settlements with the nodes of a network and assigned two kinds of weights to the links between them. When the weights are proportional to the number of contacts we observed weakly formed, but spatially based modules resembling to the borders of macro-regions, the highest level of regional administration in...

  5. Online Data Structures in External Memory

    E-Print Network [OSTI]

    Vitter, Jeffrey Scott

    1999-01-01T23:59:59.000Z

    /output communication (or I/O) between the external and internal memories. In this paper we discuss a variety of online data structures for external memory, some very old and some very new, such as hashing (for dictionaries), B-trees (for dictionaries and 1-D range...

  6. Phase transition towards strange matter

    E-Print Network [OSTI]

    F. Gulminelli; Ad. R. Raduta; M. Oertel

    2012-08-31T23:59:59.000Z

    The phase diagram of a system constituted of neutrons and $\\Lambda$-hyperons in thermal equilibrium is evaluated in the mean-field approximation. It is shown that this simple system exhibits a complex phase diagram with first and second order phase transitions. Due to the generic presence of attractive and repulsive couplings, the existence of phase transitions involving strangeness appears independent of the specific interaction model. In addition we will show under which conditions a phase transition towards strange matter at high density exists, which is expected to persist even within a complete treatment including all the different strange and non- strange baryon states. The impact of this transition on the composition of matter in the inner core of neutron stars is discussed.

  7. Superconducting Detectors for Super Light Dark Matter

    E-Print Network [OSTI]

    Yonit Hochberg; Yue Zhao; Kathryn M. Zurek

    2015-04-27T23:59:59.000Z

    We propose and study a new class of of superconducting detectors which are sensitive to O(meV) electron recoils from dark matter-electron scattering. Such devices could detect dark matter as light as the warm dark matter limit, mX > keV. We compute the rate of dark matter scattering off free electrons in a (superconducting) metal, including the relevant Pauli blocking factors. We demonstrate that classes of dark matter consistent with all astrophysical and terrestrial constraints could be detected by such detectors with a moderate size exposure.

  8. Superconducting Detectors for Super Light Dark Matter

    E-Print Network [OSTI]

    Hochberg, Yonit; Zurek, Kathryn M

    2015-01-01T23:59:59.000Z

    We propose and study a new class of of superconducting detectors which are sensitive to O(meV) electron recoils from dark matter-electron scattering. Such devices could detect dark matter as light as the warm dark matter limit, mX > keV. We compute the rate of dark matter scattering off free electrons in a (superconducting) metal, including the relevant Pauli blocking factors. We demonstrate that classes of dark matter consistent with all astrophysical and terrestrial constraints could be detected by such detectors with a moderate size exposure.

  9. On Math, Matter and Mind

    E-Print Network [OSTI]

    Piet Hut; Mark Alford; Max Tegmark

    2006-01-15T23:59:59.000Z

    We discuss the nature of reality in the ontological context of Penrose's math-matter-mind triangle. The triangle suggests the circularity of the widespread view that math arises from the mind, the mind arises out of matter, and that matter can be explained in terms of math. Non-physicists should be wary of any claim that modern physics leads us to any particular resolution of this circularity, since even the sample of three theoretical physicists writing this paper hold three divergent views. Some physicists believe that current physics has already found the basic framework for a complete description of reality, and only has to fill in the details. Others suspect that no single framework, from physics or other sources, will ever capture reality. Yet others guess that reality might be approached arbitrarily closely by some form of future physics, but probably based on completely different frameworks. We will designate these three approaches as the fundamentalist, secular and mystic views of the world, as seen by practicing physicists. We present and contrast each of these views, which arguably form broad categories capturing most if not all interpretations of physics. We argue that this diversity in the physics community is more useful than an ontological monoculture, since it motivates physicists to tackle unsolved problems with a wide variety of approaches.

  10. Effects of Advanced Combustion Technologies on Particulate Matter...

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

    Advanced Combustion Technologies on Particulate Matter Emissions Characteristics Effects of Advanced Combustion Technologies on Particulate Matter Emissions Characteristics...

  11. Strange Quark Matter and Compact Stars

    E-Print Network [OSTI]

    Fridolin Weber

    2004-09-27T23:59:59.000Z

    Astrophysicists distinguish between three different types of compact stars. These are white dwarfs, neutron stars, and black holes. The former contain matter in one of the densest forms found in the Universe which, together with the unprecedented progress in observational astronomy, make such stars superb astrophysical laboratories for a broad range of most striking physical phenomena. These range from nuclear processes on the stellar surface to processes in electron degenerate matter at subnuclear densities to boson condensates and the existence of new states of baryonic matter--like color superconducting quark matter--at supernuclear densities. More than that, according to the strange matter hypothesis strange quark matter could be more stable than nuclear matter, in which case neutron stars should be largely composed of pure quark matter possibly enveloped in thin nuclear crusts. Another remarkable implication of the hypothesis is the possible existence of a new class of white dwarfs. This article aims at giving an overview of all these striking physical possibilities, with an emphasis on the astrophysical phenomenology of strange quark matter. Possible observational signatures associated with the theoretically proposed states of matter inside compact stars are discussed as well. They will provide most valuable information about the phase diagram of superdense nuclear matter at high baryon number density but low temperature, which is not accessible to relativistic heavy ion collision experiments.

  12. HeinOnline ---33 Hous. L. Rev. 1431 (1996-1997) HeinOnline ---33 Hous. L. Rev. 1432 (1996-1997)

    E-Print Network [OSTI]

    Kidd, Kenneth

    HeinOnline --- 33 Hous. L. Rev. 1431 (1996-1997) #12;HeinOnline --- 33 Hous. L. Rev. 1432 (1996-1997) #12;HeinOnline --- 33 Hous. L. Rev. 1433 (1996-1997) #12;HeinOnline --- 33 Hous. L. Rev. 1434 (1996-1997) #12;HeinOnline --- 33 Hous. L. Rev. 1435 (1996-1997) #12;HeinOnline --- 33 Hous. L. Rev. 1436 (1996-1997

  13. The Evolution of Galaxies by the Incompatibility between Dark Matter and Baryonic Matter

    E-Print Network [OSTI]

    Ding-Yu Chung

    2011-02-10T23:59:59.000Z

    In this paper, the evolution of galaxies is by the incompatibility between dark matter and baryonic matter. Due to the structural difference, baryonic matter and dark matter are incompatible to each other as oil droplet and water in emulsion. In the interfacial zone between dark matter and baryonic matter, this incompatibility generates the modification of Newtonian dynamics to keep dark matter and baryonic matter apart. The five periods of baryonic structure development in the order of increasing incompatibility are the free baryonic matter, the baryonic droplet, the galaxy, the cluster, and the supercluster periods. The transition to the baryonic droplet generates density perturbation in the CMB. In the galaxy period, the first-generation galaxies include elliptical, normal spiral, barred spiral, irregular, and dwarf spheroidal galaxies. In the cluster period, the second-generation galaxies include modified giant ellipticals, cD, evolved S0, dwarf elliptical, BCD, and tidal dwarf galaxies. The whole observable expanding universe behaves as one unit of emulsion with increasing incompatibility between dark matter and baryonic matter. The properties of dark matter and baryonic matter are based on cosmology derived from the two physical structures: the space structure and the object structure. Baryonic matter can be described by the periodic table of elementary particles.

  14. EXTRAGALACTIC DARK MATTER AND DIRECT DETECTION EXPERIMENTS

    SciTech Connect (OSTI)

    Baushev, A. N., E-mail: baushev@gmail.com [DESY, D-15738 Zeuthen (Germany); Institut fuer Physik und Astronomie, Universitaet Potsdam, D-14476 Potsdam-Golm (Germany)

    2013-07-10T23:59:59.000Z

    Recent astronomical data strongly suggest that a significant part of the dark matter content of the Local Group and Virgo Supercluster is not incorporated into the galaxy halos and forms diffuse components of these galaxy clusters. A portion of the particles from these components may penetrate the Milky Way and make an extragalactic contribution to the total dark matter containment of our Galaxy. We find that the particles of the diffuse component of the Local Group are apt to contribute {approx}12% to the total dark matter density near Earth. The particles of the extragalactic dark matter stand out because of their high speed ({approx}600 km s{sup -1}), i.e., they are much faster than the galactic dark matter. In addition, their speed distribution is very narrow ({approx}20 km s{sup -1}). The particles have an isotropic velocity distribution (perhaps, in contrast to the galactic dark matter). The extragalactic dark matter should provide a significant contribution to the direct detection signal. If the detector is sensitive only to the fast particles (v > 450 km s{sup -1}), then the signal may even dominate. The density of other possible types of the extragalactic dark matter (for instance, of the diffuse component of the Virgo Supercluster) should be relatively small and comparable with the average dark matter density of the universe. However, these particles can generate anomaly high-energy collisions in direct dark matter detectors.

  15. The CRESST Dark Matter Search

    E-Print Network [OSTI]

    B. Majorovits; G. Angloher; C. Bucci; P. Christ; C. Cozzini; F. von Feilitzsch; D. Hauff; S. Henry; Th. Jagemann; J. Jochum; H. Kraus; V. Mikhailik; J. Ninkovic; F. Petricca; W. Potzel; F. Proebst; Y. Ramachers; M. Razeti; W. Rau; W. Seidel; M. Stark; L. Stodolsky; A. J. B. Tolhurst; D. Wahl; W. Westphal; H. Wulandari

    2004-11-15T23:59:59.000Z

    We present first competitive results on WIMP dark matter using the phonon-light-detection technique. A particularly strong limit for WIMPs with coherent scattering results from selecting a region of the phonon-light plane corresponding to tungsten recoils. The observed count rate in the neutron band is compatible with the rate expected from neutron background. CRESST is presently being upgraded with a 66 channel SQUID readout system, a neutron shield and a muon veto system. This results in a significant improvement in sensitivity.

  16. Axion hot dark matter bounds

    E-Print Network [OSTI]

    G. Raffelt; S. Hannestad; A. Mirizzi; Y. Y. Y. Wong

    2008-08-06T23:59:59.000Z

    We derive cosmological limits on two-component hot dark matter consisting of neutrinos and axions. We restrict the large-scale structure data to the safely linear regime, excluding the Lyman-alpha forest. We derive Bayesian credible regions in the two-parameter space consisting of m_a and sum(m_nu). Marginalizing over sum(m_nu) provides m_aaxions the same data and methods give sum(m_nu)< 0.63 eV (95% CL).

  17. Holographic Viscosity of Fundamental Matter

    E-Print Network [OSTI]

    David Mateos; Robert C. Myers; Rowan M. Thomson

    2006-10-16T23:59:59.000Z

    A holographic dual of a finite-temperature SU(N_c) gauge theory with a small number of flavours N_f viscosity to entropy ratio in these theories saturates the conjectured universal bound eta/s >= 1/4\\pi. The contribution of the fundamental matter eta_fund is therefore enhanced at strong 't Hooft coupling lambda; for example, eta_fund ~ lambda N_c N_f T^3 in four dimensions. Other transport coefficients are analogously enhanced. These results hold with or without a baryon number chemical potential.

  18. Benford's Law Applies To Online Social Networks

    E-Print Network [OSTI]

    Golbeck, Jennifer

    2015-01-01T23:59:59.000Z

    Benford's Law states that the frequency of first digits of numbers in naturally occurring systems is not evenly distributed. Numbers beginning with a 1 occur roughly 30\\% of the time, and are six times more common than numbers beginning with a 9. We show that Benford's Law applies to social and behavioral features of users in online social networks. We consider social data from five major social networks: Facebook, Twitter, Google Plus, Pinterest, and Live Journal. We show that the distribution of first significant digits of friend and follower counts for users in these systems follow Benford's Law. The same holds for the number of posts users make. We extend this to egocentric networks, showing that friend counts among the people in an individual's social network also follow the expected distribution. We discuss how this can be used to detect suspicious or fraudulent activity online and to validate datasets.

  19. Automatic identification of abstract online groups

    DOE Patents [OSTI]

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

    2014-04-15T23:59:59.000Z

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

  20. TABLEOFCONTENTS Sign up for an online subscription at

    E-Print Network [OSTI]

    Weston, Ken

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Graphene, Basic Superconductivity, Other Condensed Matter, Qubits & Quantum Entanglement, Quantum

  1. Converting online algorithms to local computation algorithms

    E-Print Network [OSTI]

    Mansour, Yishay; Vardi, Shai; Xie, Ning

    2012-01-01T23:59:59.000Z

    We propose a general method for converting online algorithms to local computation algorithms by selecting a random permutation of the input, and simulating running the online algorithm. We bound the number of steps of the algorithm using a query tree, which models the dependencies between queries. We improve previous analyses of query trees on graphs of bounded degree, and extend the analysis to the cases where the degrees are distributed binomially, and to a special case of bipartite graphs. Using this method, we give a local computation algorithm for maximal matching in graphs of bounded degree, which runs in time and space O(log^3 n). We also show how to convert a large family of load balancing algorithms (related to balls and bins problems) to local computation algorithms. This gives several local load balancing algorithms which achieve the same approximation ratios as the online algorithms, but run in O(log n) time and space. Finally, we modify existing local computation algorithms for hypergraph 2-color...

  2. Identificação online de sinais baseada em calorimetria de altas energias e fina segmentação

    E-Print Network [OSTI]

    Ciodaro, T; Cerqueira, A.

    The ATLAS experiment operates in the environment of the large hadron collider, the LHC, located at CERN, Switzerland. LHC accelerates bunches of protons in opposite directions and collide them in specific collision points every 25 ns, reaching up to 14 TeV of energy at the center of mass. Through these collisions, it is possible to probe deep into matter and explore interesting physical process in a way which was never seen by science. As much of the produced information is related to uninteresting physics, it was implemented an online trigger system to select possible events from the interesting physical channels produced by LHC. In particular, the first level trigger uses compact information from both calorimeters and muon chambers for a fast event selection. The other high-level triggers access the full detector resolution, yielding high performance algorithms for particle identification. The muon chambers, though, can be significantly degraded by the strong radioactive environment at the cavern where ATLA...

  3. Axion Dark Matter Detection using Atomic Transitions

    E-Print Network [OSTI]

    P. Sikivie

    2014-09-09T23:59:59.000Z

    Dark matter axions may cause transitions between atomic states that differ in energy by an amount equal to the axion mass. Such energy differences are conveniently tuned using the Zeeman effect. It is proposed to search for dark matter axions by cooling a kilogram-sized sample to milliKelvin temperatures and count axion induced transitions using laser techniques. This appears an appropriate approach to axion dark matter detection in the $10^{-4}$ eV mass range.

  4. Noble Travails: Noble Liquid Dark Matter Detectors

    E-Print Network [OSTI]

    Golwala, Sunil

    , or water, 0.1x flux per 10 cm Cosmic Ray Muons generate high energy neutrons 50 MeV - 3 GeV which are toughGaitskell Noble Travails: Noble Liquid Dark Matter Detectors Rick Gaitskell Particle Astrophysics://particleastro.brown.edu/ http://gaitskell.brown.edu v1 #12;LUX Dark Matter Collaboration 2007 v01_7mm Dark Matter Theory

  5. Maximally incompressible neutron star matter

    E-Print Network [OSTI]

    Timothy S. Olson

    2000-12-07T23:59:59.000Z

    Relativistic kinetic theory, based on the Grad method of moments as developed by Israel and Stewart, is used to model viscous and thermal dissipation in neutron star matter and determine an upper limit on the maximum mass of neutron stars. In the context of kinetic theory, the equation of state must satisfy a set of constraints in order for the equilibrium states of the fluid to be thermodynamically stable and for perturbations from equilibrium to propagate causally via hyperbolic equations. Application of these constraints to neutron star matter restricts the stiffness of the most incompressible equation of state compatible with causality to be softer than the maximally incompressible equation of state that results from requiring the adiabatic sound speed to not exceed the speed of light. Using three equations of state based on experimental nucleon-nucleon scattering data and properties of light nuclei up to twice normal nuclear energy density, and the kinetic theory maximally incompressible equation of state at higher density, an upper limit on the maximum mass of neutron stars averaging 2.64 solar masses is derived.

  6. A Matter of Quantum Voltages

    SciTech Connect (OSTI)

    Sellner, Bernhard; Kathmann, Shawn M.

    2014-11-14T23:59:59.000Z

    Voltages inside matter are relevant to crystallization, materials science, biology, catalysis, and aqueous chemistry. Electron holography is able to measure the variation of voltages in matter and modern supercomputers allow the calculation of quantum voltages with practically unlimited spatial and temporal resolution of bulk systems. Of particular interest is the Mean Inner Potential (Vo) - the spatial average of these voltages. Voltages are very sensitive to the distribution of electrons and provide metrics to understand interactions in condensed phases. In the present study, we find excellent agreement with measurements of Vo for vitrified water and salt crystals and demonstrate the impact of covalent and ionic bonding as well as intermolecular/atomic interactions. Furthermore, we predict Vo as well as the fluctuations of these voltages in aqueous NaCl electrolytes and characterize the changes in their behavior as the resolution increases below the size of atoms. This work was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences & Biosciences. Pacific Northwest National Laboratory (PNNL) is a multiprogram national laboratory operated for DOE by Battelle. This research used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.

  7. Shapes of dark matter halos

    E-Print Network [OSTI]

    James S. Bullock

    2001-06-21T23:59:59.000Z

    I present an analysis of the density shapes of dark matter halos in LCDM and LWDM cosmologies. The main results are derived from a statistical sample of galaxy-mass halos drawn from a high resolution LCDM N-body simulation. Halo shapes show significant trends with mass and redshift: low-mass halos are rounder than high mass halos, and, for a fixed mass, halos are rounder at low z. Contrary to previous expectations, which were based on cluster-mass halos and non-COBE normalized simulations, LCDM galaxy-mass halos at z=0 are not strongly flattened, with short to long axis ratios of s = 0.70 +/- 0.17. I go on to study how the shapes of individual halos change when going from a LCDM simulation to a simulation with a warm dark matter power spectrum (LWDM). Four halos were compared, and, on average, the WDM halos are more spherical than their CDM counterparts (s =0.77 compared to s = 0.71). A larger sample of objects will be needed to test whether the trend is significant.

  8. PROBING DENSE NUCLEAR MATTER VIA NUCLEAR COLLISIONS

    E-Print Network [OSTI]

    Stocker, H.

    2012-01-01T23:59:59.000Z

    University of California. LBL-12095 Probing Dense NuclearMatter Nuclear Collisions* v~a H. Stocker, M.Gyulassy and J. Boguta Nuclear Science Division Lawrence

  9. Interaction of gravitational waves with matter

    E-Print Network [OSTI]

    A. Cetoli; C. J. Pethick

    2011-10-03T23:59:59.000Z

    We develop a unified formalism for describing the interaction of gravitational waves with matter that clearly separates the effects of general relativity from those due to interactions in the matter. Using it, we derive a general expression for the dispersion of gravitational waves in matter in terms of correlation functions for the matter in flat spacetime. The self energy of a gravitational wave is shown to have contributions analogous to the paramagnetic and diamagnetic contributions to the self energy of an electromagnetic wave. We apply the formalism to some simple systems - free particles, an interacting scalar field, and a fermionic superfluid.

  10. An attempt to do without dark matter

    E-Print Network [OSTI]

    William H. Kinney; Martina Brisudova

    2000-06-30T23:59:59.000Z

    The discrepancy between dynamical mass measures of objects such as galaxies and the observed distribution of luminous matter in the universe is typically explained by invoking an unseen ``dark matter'' component. Dark matter must necessarily be non-baryonic. We introduce a simple hypothesis to do away with the necessity for dark matter by introducing an additional non-gravitational force coupled to baryon number as a charge. We compare this hypothesis to Milgrom's Modified Newtonian Dynamics. The model ultimately fails when confronted with observation, but it fails in an interesting way.

  11. Generating Luminous and Dark Matter During Inflation

    E-Print Network [OSTI]

    Barrie, Neil D

    2015-01-01T23:59:59.000Z

    We propose a new mechanism for generating both luminous and dark matter during cosmic inflation. According to this mechanism, ordinary and dark matter carry common charge which is associated with an anomalous $ U(1)_{X} $ group. Anomaly terms source $ \\mathcal{CP} $ and $ U(1)_{X} $ charge violating processes during inflation, producing corresponding non-zero Chern-Simons numbers which are subsequently reprocessed into baryon and dark matter densities. The general framework developed is then applied to two possible extensions of the Standard Model with anomalous gauged $B$ and $B-L$, each with an additional dark matter candidate.

  12. Generating Luminous and Dark Matter During Inflation

    E-Print Network [OSTI]

    Neil D. Barrie; Archil Kobakhidze

    2015-03-09T23:59:59.000Z

    We propose a new mechanism for generating both luminous and dark matter during cosmic inflation. According to this mechanism, ordinary and dark matter carry common charge which is associated with an anomalous $ U(1)_{X} $ group. Anomaly terms source $ \\mathcal{CP} $ and $ U(1)_{X} $ charge violating processes during inflation, producing corresponding non-zero Chern-Simons numbers which are subsequently reprocessed into baryon and dark matter densities. The general framework developed is then applied to two possible extensions of the Standard Model with anomalous gauged $B$ and $B-L$, each with an additional dark matter candidate.

  13. ALS Reveals New State of Matter

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

    papers and extensive news coverage of their work on a new state of matter embodied by "topological insulators," materials that conduct electricity only on their surfaces. First...

  14. Dark Energy and Dark Matter Models

    E-Print Network [OSTI]

    Burra G. Sidharth

    2015-01-07T23:59:59.000Z

    We revisit the problems of dark energy and dark matter and several models designed to explain them, in the light of some latest findings.

  15. Jelly Bean Universe (Dark Matter / Dark Energy)

    ScienceCinema (OSTI)

    Kurt Riesselmann

    2010-01-08T23:59:59.000Z

    Fermilab's Kurt Riesselmann explains how to make a jelly bean universe to help explain the mysteries of dark matter and dark energy.

  16. Dissipative dark matter explains rotation curves

    E-Print Network [OSTI]

    Foot, R

    2015-01-01T23:59:59.000Z

    Dissipative dark matter, where dark matter particles interact with a massless (or very light) boson, is studied. Such dark matter can arise in simple hidden sector gauge models, including those featuring an unbroken $U(1)'$ gauge symmetry, leading to a dark photon. Previous work has shown that such models can not only explain the LSS and CMB, but potentially also dark matter phenomena on small scales, such as the inferred cored structure of dark matter halos. In this picture, dark matter halos of disk galaxies not only cool via dissipative interactions but are also heated via ordinary supernovae (facilitated by an assumed photon - dark photon kinetic mixing interaction). This interaction between the dark matter halo and ordinary baryons, a very special feature of these types of models, plays a critical role in governing the physical properties of the dark matter halo. Here, we further study the implications of this type of dissipative dark matter for disk galaxies. Building on earlier work, we develop a simpl...

  17. Quantum Condensates in Nuclear Matter: Problems

    E-Print Network [OSTI]

    G. Ropke; D. Zablocki

    2010-01-11T23:59:59.000Z

    In connection with the contribution "Quantum Condensates in Nuclear Matter" some problems are given to become more familiar with the techniques of many-particle physics.

  18. Scientists Mix Matter and Anti-Matter Results to Resolve Decade...

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

    Lab's Experimental Hall B was used to measure electrons during the experiment. Fans of science and science fiction have been warned that mixing matter with anti-matter can yield...

  19. DOE-EPRI On-Line Monitoring Implementation Guidelines

    SciTech Connect (OSTI)

    E. Davis; R. Bickford

    2003-01-02T23:59:59.000Z

    OAK B139 Industry and EPRI experience at several plants has shown on-line monitoring to be very effective in identifying out-of-calibration instrument channels or indications of equipment-degradation problems. The EPRI implementation project for on-line monitoring has demonstrated the feasibility of on-line monitoring at several participating nuclear plants. The results have been very encouraging, and substantial progress is anticipated in the coming years.

  20. DOE-EPRI On-Line Monitoring Implementation Guidelines

    SciTech Connect (OSTI)

    E. Davis, R. Bickford

    2003-01-02T23:59:59.000Z

    Industry and EPRI experience at several plants has shown on-line monitoring to be very effective in identifying out-of-calibration instrument channels or indications of equipment-degradation problems. The EPRI implementation project for on-line monitoring has demonstrated the feasability of on-line monitoring at several participating nuclear plants. The results have been very enouraging, and substantial progress is anticipated in the coming years.

  1. Incentive Compatible Online Scheduling of Malleable Parallel Jobs with Individual Deadlines

    SciTech Connect (OSTI)

    Carroll, Thomas E.; Grosu, Daniel

    2010-09-13T23:59:59.000Z

    We consider the online scheduling of malleable jobs on parallel systems, such as clusters, symmetric multiprocessing computers, and multi-core processor computers. Malleable jobs is a model of parallel processing in which jobs adapt to the number of processors assigned to them. This model permits the scheduler and resource manager to make more ef?cient use of the available resources. Each malleable job is characterized by arrival time, deadline, and value. If the job completes by its deadline, the user earns the payoff indicated by the value; otherwise, she earns a payoff of zero. The scheduling objective is to maximize the sum of the values of the jobs that complete by their associated deadlines. Complicating the matter is that users in the real world are rational and they will attempt to manipulate the scheduler by misreporting their jobs’ parameters if it bene?ts them to do so. To mitigate this behavior, we design an incentive compatible online scheduling mechanism. Incentive compatibility assures us that the users will obtain the maximum payoff only if they truthfully report their jobs’ parameters to the scheduler. Finally, we simulate and study the mechanism to show the effects of misreports on the cheaters and on the system.

  2. Leave any noise at the signal : participation art online

    E-Print Network [OSTI]

    Frid-Jimenez, Amber

    2007-01-01T23:59:59.000Z

    Online participatory media holds the promise of activating otherwise passive audiences by providing spaces that encourage creative collaboration among diverse participants. The thesis traces the history of participation ...

  3. Re-Imagining the Past in Transnational Online Communities

    E-Print Network [OSTI]

    Nikunen, Kaarina

    2013-01-01T23:59:59.000Z

    memory. Online Memories: Kurdistan The question of homelandin-the-making. Since Kurdistan is not a recognized state,79), the idea of a single Kurdistan confronts the complexity

  4. Quick Links to IS Online Services | The Ames Laboratory

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

    Quick Links to IS Online Services Web Access to Mailboxes (Central Mailboxes Only) Web Access to SpamVirus Quarantine (Central Mailboxes Only) Change your Central Account (Email)...

  5. Teaching via online video lectures a new paradigm? William W. Hsieh

    E-Print Network [OSTI]

    Hsieh, William

    1 Teaching via online video lectures ­ a new paradigm? William W done via online video lectures. In the fall of 2011, Stanford University of 2013, I gave this course as a 13-week online video lecture course to twelve

  6. The PICASSO Dark Matter Experiment

    SciTech Connect (OSTI)

    Wichoski, Ubi [Department of Physics, Laurentian University, Sudbury, ON, P3E 2C6 (Canada); Collaboration: PICASSO Collaboration

    2011-12-16T23:59:59.000Z

    The PICASSO experiment searches for cold dark matter through the direct detection of weakly interacting massive particles (WIMPs) via their spin-dependent interactions with fluorine at SNOLAB, Sudbury--ON, Canada since 2002. The detection principle is based on the superheated droplet technique; the detectors consist of a gel matrix with millions of liquid droplets of superheated fluorocarbon (C4F10) dispersed in it. Recently, a new setup has been built and installed in the Ladder Lab area at SNOLAB. In the present phase of the experiment the Collaboration is running 4.5-litre detector modules with approximately 85 g of active mass per module. Here, we give an overview of the experiment and discuss the progress in background mitigation, in particular background discrimination in the PICASSO detectors.

  7. Lepton-flavored dark matter

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

    Kile, Jennifer; Kobach, Andrew; Soni, Amarjit

    2015-05-01T23:59:59.000Z

    In this work, we address two paradoxes. The first is that the measured dark-matter relic density can be satisfied with new physics at O(100 GeV–1 TeV), while the null results from direct-detection experiments place lower bounds of O(10 TeV) on a new-physics scale. The second puzzle is that the severe suppression of lepton-flavor-violating processes involving electrons, e.g. ? ? 3e, ? ? e??, etc., implies that generic new-physics contributions to lepton interactions cannot exist below O(10–100 TeV), whereas the 3.6? deviation of the muon g – 2 from the standard model can be explained by a new physics scale matter thus interacts appreciably only with particles of ? and ? flavor at tree level and has loop-suppressed couplings to quarks and electrons. Remarkably, if such a gauged flavor interaction exists at a scale O(100 GeV–1 TeV), it allows for a consistent phenomenological framework, compatible with the muon g – 2, the relic density, direct detection, indirect detection, charged-lepton decays, neutrino trident production, and results from hadron and e?e? colliders. We suggest experimental tests for these ideas at colliders and for low-energy observables. (author)

  8. Lepton-flavored dark matter

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

    Kile, Jennifer; Kobach, Andrew; Soni, Amarjit

    2015-05-01T23:59:59.000Z

    In this work, we address two paradoxes. The first is that the measured dark-matter relic density can be satisfied with new physics at O(100 GeV–1 TeV), while the null results from direct-detection experiments place lower bounds of O(10 TeV) on a new-physics scale. The second puzzle is that the severe suppression of lepton-flavor-violating processes involving electrons, e.g. ? ? 3e, ? ? e??, etc., implies that generic new-physics contributions to lepton interactions cannot exist below O(10–100 TeV), whereas the 3.6? deviation of the muon g – 2 from the standard model can be explained by a new physics scale more »TeV). Here, we suggest that it may not be a coincidence that both the muon g – 2 and the relic density can be satisfied by a new-physics scale ?1 TeV. We consider the possibility of a gauged lepton-flavor interaction that couples at tree level only to ?- and ?-flavored leptons and the dark sector. Dark matter thus interacts appreciably only with particles of ? and ? flavor at tree level and has loop-suppressed couplings to quarks and electrons. Remarkably, if such a gauged flavor interaction exists at a scale O(100 GeV–1 TeV), it allows for a consistent phenomenological framework, compatible with the muon g – 2, the relic density, direct detection, indirect detection, charged-lepton decays, neutrino trident production, and results from hadron and e?e? colliders. We suggest experimental tests for these ideas at colliders and for low-energy observables. (author)« less

  9. Strong field physics in condensed matter

    E-Print Network [OSTI]

    Oka, Takashi

    2011-01-01T23:59:59.000Z

    There are deep similarities between non-linear QFT studied in high-energy and non-equilibrium physics in condensed matter. Ideas such as the Schwinger mechanism and the Volkov state are deeply related to non-linear transport and photovoltaic Hall effect in condensed matter. Here, we give a review on these relations.

  10. Strong field physics in condensed matter

    E-Print Network [OSTI]

    Takashi Oka

    2011-02-12T23:59:59.000Z

    There are deep similarities between non-linear QFT studied in high-energy and non-equilibrium physics in condensed matter. Ideas such as the Schwinger mechanism and the Volkov state are deeply related to non-linear transport and photovoltaic Hall effect in condensed matter. Here, we give a review on these relations.

  11. Probing nuclear matter with jet conversions

    E-Print Network [OSTI]

    Liu, W.; Fries, Rainer J.

    2008-01-01T23:59:59.000Z

    We discuss the flavor of leading jet partons as a valuable probe of nuclear matter. We point out that the coupling of jets to nuclear matter naturally leads to an alteration of jet chemistry even at high transverse momentum PT. In particular...

  12. Public Service "The Minor That Matters"

    E-Print Network [OSTI]

    degree. Employees in public service have the opportunity to: vdeliver and manage public programs vaddressMinorThatMatters" TAKEYOURCAR EER IN ANENTIRE LY NEW DIRECTION #12;Public Service...The Minor That Matters Purpose of the Minor designed to provide a solid foundation in public administration and non-profit management, including

  13. The status of neutralino dark matter

    SciTech Connect (OSTI)

    Shakya, Bibhushan [Laboratory for Elementary Particle Physics, Cornell University, Ithaca, NY 14853 (United States)

    2014-06-24T23:59:59.000Z

    The lightest neutralino in supersymmetry is the most studied dark matter candidate. This writeup reviews the status of neutralino dark matter in minimal and nonminimal supersymmetric models in light of recent null results at the XENON100 experiment and the observation of a 130 GeV gamma ray signal from the Galactic Center by the Fermi LAT.

  14. Pressure inequalities for nuclear and neutron matter

    E-Print Network [OSTI]

    Dean Lee

    2005-12-22T23:59:59.000Z

    We prove several inequalities using lowest-order effective field theory for nucleons which give an upper bound on the pressure of asymmetric nuclear matter and neutron matter. We prove two types of inequalities, one based on convexity and another derived from shifting an auxiliary field.

  15. Advanced particulate matter control apparatus and methods

    DOE Patents [OSTI]

    Miller, Stanley J. (Grand Forks, ND); Zhuang, Ye (Grand Forks, ND); Almlie, Jay C. (East Grand Forks, MN)

    2012-01-10T23:59:59.000Z

    Apparatus and methods for collection and removal of particulate matter, including fine particulate matter, from a gas stream, comprising a unique combination of high collection efficiency and ultralow pressure drop across the filter. The apparatus and method utilize simultaneous electrostatic precipitation and membrane filtration of a particular pore size, wherein electrostatic collection and filtration occur on the same surface.

  16. Measuring the dark matter equation of state

    E-Print Network [OSTI]

    Serra, Ana Laura

    2011-01-01T23:59:59.000Z

    The nature of the dominant component of galaxies and clusters remains unknown. While the astrophysics comunity supports the cold dark matter (CDM) paradigm as a clue factor in the current cosmological model, no direct CDM detections have been performed. Faber and Visser 2006 have suggested a simple method for measuring the dark matter equation of state. By combining kinematical and gravitational lensing data it is possible to test the widely adopted assumption of pressureless dark matter. According to this formalism, we have measured the dark matter equation of state for first time using improved techniques. We have found that the value of the equation of state parameter is consistent with pressureless dark matter within the errors. Nevertheless the measured value is lower than expected. This fact follows from the well known differences between the masses determinated by lensing and kinematical methods. We have tested our techniques using simulations and we have also analyzed possible sources of errors that c...

  17. Dark Matter And The Habitability of Planets

    E-Print Network [OSTI]

    Hooper, Dan

    2011-01-01T23:59:59.000Z

    In many models, dark matter particles can elastically scatter with nuclei in planets, causing those particles to become gravitationally bound. While the energy expected to be released through the subsequent annihilations of dark matter particles in the interior of the Earth is negligibly small (a few megawatts in the most optimistic models), larger planets that reside in regions with higher densities of slow moving dark matter could plausibly capture and annihilate dark matter at a rate high enough to maintain liquid water on their surfaces, even in the absence of additional energy from starlight or other sources. On these rare planets, it may be dark matter rather than light from a host star that makes it possible for life to emerge, evolve, and survive.

  18. Dark Matter And The Habitability of Planets

    E-Print Network [OSTI]

    Dan Hooper; Jason H. Steffen

    2012-03-06T23:59:59.000Z

    In many models, dark matter particles can elastically scatter with nuclei in planets, causing those particles to become gravitationally bound. While the energy expected to be released through the subsequent annihilations of dark matter particles in the interior of the Earth is negligibly small (a few megawatts in the most optimistic models), larger planets that reside in regions with higher densities of slow moving dark matter could plausibly capture and annihilate dark matter at a rate high enough to maintain liquid water on their surfaces, even in the absence of additional energy from starlight or other sources. On these rare planets, it may be dark matter rather than light from a host star that makes it possible for life to emerge, evolve, and survive.

  19. A new relativistic model of hybrid star with interactive quark matter and dense baryonic matter

    E-Print Network [OSTI]

    Koushik Chakraborty; Farook Rahaman; Arkopriya Mallick

    2014-10-08T23:59:59.000Z

    We propose a relativistic model of hybrid star admitting conformal symmetry considering quark matter and baryonic matter as two different fluids. We define interaction equations between the normal baryonic matter and the quark matter and study the physical situations for repulsive, attractive and zero interaction between the constituent matters. From the interaction equations we find out the value of the equation of state (EOS) parameter for normal baryonic matter which is found to be consistent with the value obtained from the Walecka model for nucleonic matter at high density. The measured value of the Bag constant is used to explore the space time geometry inside the star. The theoretical mass-radius values are compared with the available observational data of the compact objects. From the nature of the match with the observational data, we predict the nature of interaction that must be present inside the hybrid stars

  20. Experiences with On-Line STEAMPOP

    E-Print Network [OSTI]

    Nath, R.; Libby, D. J.; Marcinkowska, A. R.; Skarke, S. C.; Thomasson, M. J.; Worsham, B. A.

    SUBSYSTEM Several types of fuel are usually available in the plant (Figure 3). For each gaseous fuel, there may be headers at various pressure levels. The external supplies of fuel feed into some of these headers. There are also PRVs connecting some... optimization, and extended ENERGYPOP for joint optimization of a process unit with the plant utility system [4 J ? All of these optimizers are off-line programs. Our long-term goal is to have the plant wide optimizer running in an on-line mode so...

  1. Online Legal Resources | 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 33 111 1,613 122Commercial602 1,39732onMake YourDepartment ofCDepartmentthe ChiefOil Oil ForOnline

  2. Online Application Process | netl.doe.gov

    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. DOE Office of Science (SC)IntegratedSpeeding access toTest and Evaluation |quasicrystals |interpenetratingOnline

  3. Sandia Energy - Online Abstracts and Reports

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol Home Distribution Grid IntegrationOffshore Wind RD&D: SedimentOnline

  4. Detecting the invisible universe with neutrinos and dark matter

    E-Print Network [OSTI]

    Kaboth, Asher C. (Asher Cunningham)

    2012-01-01T23:59:59.000Z

    Recent work in astrophysics has show that most of the matter in the universe is non-luminous. This work investigates two searches for non-luminous matter: hot dark matter formed from cosmic relic neutrinos from the Big ...

  5. On-line construction of position heaps Gregory Kucherov

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    On-line construction of position heaps Gregory Kucherov Abstract We propose a simple linear-time on-line algorithm for constructing a po- sition heap for a string [EMOW11]. Our definition of position heap differs order of length. Our construction is based on classic suffix pointers and resembles the Ukkonen

  6. Engineering The only online degree program focused on moving

    E-Print Network [OSTI]

    Van Veen, Barry D.

    Master of Engineering in Engine Systems The only online degree program focused on moving the internal combustion industry forward through graduate education of working engineers. Master of Engineering in Engine Systems The only online degree program focused on moving the internal combustion industry forward

  7. The Two Server Problem Models of Online Computation

    E-Print Network [OSTI]

    Bein, Wolfgang

    The Two Server Problem Models of Online Computation Results A Randomized Algorithm for Two Servers, James Oravec supported by NSF grant CCR-0312093 Wolfgang Bein A Randomized Algorithm for Two Servers in Cross Polytope S #12;The Two Server Problem Models of Online Computation Results The Randomized 2-Server

  8. Adaptive Online Battery Parameters/SOC/Capacity Co-estimation

    E-Print Network [OSTI]

    Chow, Mo-Yuen

    and even storage ageing of the battery. Following our previous publications in which we developed an onlineAdaptive Online Battery Parameters/SOC/Capacity Co-estimation Habiballah Rahimi-Eichi and Mo parameters to characterize the performance and application of a battery. Although the nominal capacity

  9. Request for Online Payment Site ETSU Bursar Office

    E-Print Network [OSTI]

    Karsai, Istvan

    Request for Online Payment Site ETSU Bursar Office PO Box 70732 Date*: _____________ (*allow Ustore site with inventory a credit card merchant ID will be requested for ETSU's processor, development: The requirements and responsibilities of an Online Site Manager are: 1. The site manager must be a full-time ETSU

  10. Institute of Environment & Resources Online monitoring and control

    E-Print Network [OSTI]

    . and Angelidaki, I. (2006) Investigation of serial CSTR digester configuration for improving biogas productionInstitute of Environment & Resources Online monitoring and control of the biogas process Kanokwan Boe #12;#12;Online monitoring and control of the biogas process Kanokwan Boe Ph.D. Thesis May 2006

  11. Online Prediction of Battery Lifetime for Embedded and Mobile Devices

    E-Print Network [OSTI]

    Krintz, Chandra

    conditions (e.g. ambient temperature, battery recharge count, etc.), and ­ portable so that a varietyOnline Prediction of Battery Lifetime for Embedded and Mobile Devices Ye Wen, Rich Wolski,rich,ckrintz}@cs.ucsb.edu Abstract. This paper presents a novel, history-based, statistical tech- nique for online battery lifetime

  12. Finite Horizon Online Packet Scheduling with Energy and Delay Constraints

    E-Print Network [OSTI]

    Uysal-Biyikoglu, Elif

    with complete prior knowledge of data/energy/channel variations, which is rarely a practical assumption, while with data arrival and deadline constraints (e.g., [1], [2], [3], [4]) as well as in- termittent energy little to suggest good online policies. On the other hand, direct online formulations have been

  13. Open Large-Scale Online Social Network Dyn

    E-Print Network [OSTI]

    Corlette, Daniel James

    2012-07-16T23:59:59.000Z

    Online social networks have quickly become the most popular destination on the World Wide Web. These networks are still a fairly new form of online human interaction and have gained wide popularity only recently within the past three to four years...

  14. Problem solving strategies in an online homework environment

    E-Print Network [OSTI]

    Problem solving strategies in an online homework environment: "Student Choice and Analytics" Daniel.T. Seaton, MIT Online Environment using LON-CAPA · Integrated Learning Environment for Mechanics - Built within LON-CAPA - E-text with instructor videos - Concept questions - Easy, Medium, Hard homework

  15. On-Line Transient Stability Assessment Scoping Study

    E-Print Network [OSTI]

    On-Line Transient Stability Assessment Scoping Study Final Project Report Power Systems Engineering PSERC #12;Power Systems Engineering Research Center On-Line Transient Stability Assessment Scoping Study With the increase in transactions on the bulk power system, there is a critical need to determine transient security

  16. Understanding Online Social Network Usage from a Network Perspective

    E-Print Network [OSTI]

    Fisher, Kathleen

    - ied the graph properties of the online communities, high level properties of snapshots of individual of these users is poor. Studies thus far have relied on surveys or interviews of OSN users or fo- cused on static within the last few years. OSNs form online communities among people with common interests, activities

  17. The Albany Particle Tower: Online Access for High School Students

    E-Print Network [OSTI]

    Cinabro, David

    The Albany Particle Tower: Online Access for High School Students Kristen Melnyk­Elsner Kimball education outreach program, the Albany Particle Tower (APT) has been made available online to students who to run the detector and analyze real time data. Introduction The Albany Particle Tower is a Cosmic Ray

  18. Sandia Energy - Control of Strong Light-Matter Coupling Using...

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

    Control of Strong Light-Matter Coupling Using the Capacitance of Metamaterial Nanocavities Home Highlights - Energy Research Control of Strong Light-Matter Coupling Using the...

  19. Electronic Structure of Warm Dense Matter via Multicenter Green...

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

    Electronic Structure of Warm Dense Matter via Multicenter Green's Function Technique Research Personnel Modeling The proposed research addresses the Warm Dense Matter area...

  20. Contingency in the Direction and Mechanics of Soil Organic Matter...

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

    Contingency in the Direction and Mechanics of Soil Organic Matter Responses to Increased Rainfall. Contingency in the Direction and Mechanics of Soil Organic Matter Responses to...

  1. Persistence of soil organic matter in eroding versus depositional...

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

    Persistence of soil organic matter in eroding versus depositional landform positions. Persistence of soil organic matter in eroding versus depositional landform positions....

  2. Recent Progress on Steam Hydrogasification of Carbonaceous Matter...

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

    Recent Progress on Steam Hydrogasification of Carbonaceous Matter to Clean Synthetic Diesel Fuel Recent Progress on Steam Hydrogasification of Carbonaceous Matter to Clean...

  3. Dark Matter Triggers of Supernovae

    E-Print Network [OSTI]

    Graham, Peter W; Varela, Jaime

    2015-01-01T23:59:59.000Z

    The transit of primordial black holes through a white dwarf causes localized heating around the trajectory of the black hole through dynamical friction. For sufficiently massive black holes, this heat can initiate runaway thermonuclear fusion causing the white dwarf to explode as a supernova. The shape of the observed distribution of white dwarfs with masses up to $1.25 M_{\\odot}$ rules out primordial black holes with masses $\\sim 10^{19}$ gm - $10^{20}$ gm as a dominant constituent of the local dark matter density. Black holes with masses as large as $10^{24}$ gm will be excluded if recent observations by the NuStar collaboration of a population of white dwarfs near the galactic center are confirmed. Black holes in the mass range $10^{20}$ gm - $10^{22}$ gm are also constrained by the observed supernova rate, though these bounds are subject to astrophysical uncertainties. These bounds can be further strengthened through measurements of white dwarf binaries in gravitational wave observatories. The mechanism p...

  4. Baryonic pinching of galactic dark matter halos

    SciTech Connect (OSTI)

    Gustafsson, Michael; Fairbairn, Malcolm; Sommer-Larsen, Jesper [Cosmology, Particle Astrophysics and String Theory, Department of Physics, Stockholm University, AlbaNova University Center, SE-106 91, Stockholm (Sweden); Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen (Denmark)

    2006-12-15T23:59:59.000Z

    High resolution cosmological N-body simulations of four galaxy-scale dark matter halos are compared to corresponding N-body/hydrodynamical simulations containing dark matter, stars and gas. The simulations without baryons share features with others described in the literature in that the dark matter density slope continuously decreases towards the center, with a density {rho}{sub DM}{proportional_to}r{sup -1.3{+-}}{sup 0.2}, at about 1% of the virial radius for our Milky Way sized galaxies. The central cusps in the simulations which also contain baryons steepen significantly, to {rho}{sub DM}{proportional_to}r{sup -1.9{+-}}{sup 0.2}, with an indication of the inner logarithmic slope converging. Models of adiabatic contraction of dark matter halos due to the central buildup of stellar/gaseous galaxies are examined. The simplest and most commonly used model, by Blumenthal et al., is shown to overestimate the central dark matter density considerably. A modified model proposed by Gnedin et al. is tested and it is shown that, while it is a considerable improvement, it is not perfect. Moreover, it is found that the contraction parameters in their model not only depend on the orbital structure of the dark-matter-only halos but also on the stellar feedback prescription which is most relevant for the baryonic distribution. Implications for dark matter annihilation at the galactic center are discussed and it is found that, although our simulations show a considerable reduced dark matter halo contraction as compared to the Blumenthal et al. model, the fluxes from dark matter annihilation are still expected to be enhanced by at least a factor of a hundred, as compared to dark-matter-only halos. Finally, it is shown that, while dark-matter-only halos are typically prolate, the dark matter halos containing baryons are mildly oblate with minor-to-major axis ratios of c/a=0.73{+-}0.11, with their flattening aligned with the central baryonic disks.

  5. Isotropic cosmological singularities: other matter models

    E-Print Network [OSTI]

    K. P. Tod

    2002-09-20T23:59:59.000Z

    Isotropic cosmological singularities are singularities which can be removed by rescaling the metric. In some cases already studied (gr-qc/9903008, gr-qc/9903009, gr-qc/9903018) existence and uniqueness of cosmological models with data at the singularity has been established. These were cosmologies with, as source, either perfect fluids with linear equations of state or massless, collisionless particles. In this article we consider how to extend these results to a variety of other matter models. These are scalar fields, massive collisionless matter, the Yang-Mills plasma of Choquet-Bruhat, or matter satisfying the Einstein-Boltzmann equation.

  6. Nonlinear manipulation and control of matter waves

    E-Print Network [OSTI]

    E. V. Goldstein; M. G. Moore; P. Meystre

    1999-06-23T23:59:59.000Z

    This paper reviews some of our recent results in nonlinear atom optics. In addition to nonlinear wave-mixing between matter waves, we also discuss the dynamical interplay between optical and matter waves. This new paradigm, which is now within experimental reach, has the potential to impact a number of fields of physics, including the manipulation and applications of atomic coherence, and the preparation of quantum entanglement between microscopic and macroscopic systems. Possible applications include quantum information processing, matter-wave holography, and nanofabrication.

  7. Clusters in nuclear matter and Mott points

    E-Print Network [OSTI]

    G. Röpke

    2015-01-06T23:59:59.000Z

    Light clusters (mass number $A \\leq 4$) in nuclear matter at subsaturation densities are described using a quantum statistical approach. In addition to self-energy and Pauli-blocking, effects of continuum correlations are taken into account to calculate the quasiparticle properties and abundances of light elements. Medium-modified quasiparticle properties are important ingredients to derive a nuclear matter equation of state applicable in the entire region of warm dense matter below saturation density. The influence of the nucleon-nucleon interaction on the quasiparticle shift is discussed.

  8. Unbound particles in dark matter halos

    SciTech Connect (OSTI)

    Behroozi, Peter S.; Wechsler, Risa H. [Kavli Institute for Particle Astrophysics and Cosmology, Physics Department, Stanford University and SLAC National Accelerator Laboratory 2575 Sand Hill Road, Menlo Park, CA (United States); Loeb, Abraham, E-mail: behroozi@stanford.edu, E-mail: aloeb@cfa.harvard.edu, E-mail: rwechsler@stanford.edu [Department of Astronomy, Harvard University 60 Garden St, Cambridge, MA (United States)

    2013-06-01T23:59:59.000Z

    We investigate unbound dark matter particles in halos by tracing particle trajectories in a simulation run to the far future (a = 100). We find that the traditional sum of kinetic and potential energies is a very poor predictor of which dark matter particles will eventually become unbound from halos. We also study the mass fraction of unbound particles, which increases strongly towards the edges of halos, and decreases significantly at higher redshifts. We discuss implications for dark matter detection experiments, precision calibrations of the halo mass function, the use of baryon fractions to constrain dark energy, and searches for intergalactic supernovae.

  9. EPJ ESoft Matter and Biological Physics

    E-Print Network [OSTI]

    Roman, Benoît

    February 2014 Published online: 25 April 2014 ­ c EDP Sciences / Societ`a Italiana di Fisica / Springer based on a balance between stretching and curvature energies on defocused states. This criterion is made a renewed vision of elastic singularities as a thermodynamic condensed phase where stress is focused

  10. Manual for Classified Matter Protection and Control

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1998-01-09T23:59:59.000Z

    Provides detailed requirements for the protection and control of classified matter which supplement DOE O 471.2A. Cancels DOE M 471.2-1 dated 09/26/1995.

  11. Size Matters. Eat Your Heart Out.

    E-Print Network [OSTI]

    Mahon, Bradford Z.

    Size Matters. Eat Your Heart Out. Party of One? Does it seem like all students drink? While and couples therapy, group therapy, medication management, 24-hour crisis service, consultation

  12. Antigravitation, Dark Energy, Dark Matter - Alternative Solution

    E-Print Network [OSTI]

    Alexeev, Boris V

    2009-01-01T23:59:59.000Z

    Collisional damping of gravitational waves in the Newtonian matter is investigated. The generalized theory of Landau damping is applied to the gravitational physical systems in the context of the plasma gravitational analogy.

  13. Superheavy sterile neutrinos as dark matter

    E-Print Network [OSTI]

    Tang, Yongjun

    2000-01-01T23:59:59.000Z

    Chung, Kolb, and Riotto have proposed nonthermal mechanisms for the production of superheavy dark matter, consisting of particles with masses which may range up to the GUT scale. Shi and Fuller, on the other hand, have proposed much lighter sterile...

  14. Shocking Signals of Dark Matter Annihilation

    E-Print Network [OSTI]

    Davis, Jonathan H; Boehm, Celine; Kotera, Kumiko; Norman, Colin

    2015-01-01T23:59:59.000Z

    We examine whether charged particles injected by self-annihilating Dark Matter into regions undergoing Diffuse Shock Acceleration (DSA) can be accelerated to high energies. We consider three astrophysical sites where shock acceleration is supposed to occur, namely the Galactic Centre, galaxy clusters and Active Galactic Nuclei (AGN). For the Milky Way, we find that the acceleration of cosmic rays injected by dark matter could lead to a bump in the cosmic ray spectrum provided that the product of the efficiency of the acceleration mechanism and the concentration of DM particles is high enough. Among the various acceleration sources that we consider (namely supernova remnants (SNRs), Fermi bubbles and AGN jets), we find that the Fermi bubbles are a potentially more efficient accelerator than SNRs. However both could in principle accelerate electrons and protons injected by dark matter to very high energies. At the extragalactic level, the acceleration of dark matter annihilation products could be responsible fo...

  15. Antigravitation, Dark Energy, Dark Matter - Alternative Solution

    E-Print Network [OSTI]

    Boris V. Alexeev

    2009-09-04T23:59:59.000Z

    Collisional damping of gravitational waves in the Newtonian matter is investigated. The generalized theory of Landau damping is applied to the gravitational physical systems in the context of the plasma gravitational analogy.

  16. Coherent neutrino scattering in dark matter detectors

    E-Print Network [OSTI]

    Anderson, Alexander John

    Coherent elastic neutrino-nucleus and weakly interacting massive particle-nucleus interaction signatures are expected to be quite similar. This paper discusses how a next-generation ton-scale dark matter detector could ...

  17. Can Dark Matter Decay in Dark Energy?

    E-Print Network [OSTI]

    S. H. Pereira; J. F. Jesus

    2009-02-26T23:59:59.000Z

    We analyze the interaction between Dark Energy and Dark Matter from a thermodynamical perspective. By assuming they have different temperatures, we study the possibility of occurring a decay from Dark Matter into Dark Energy, characterized by a negative parameter $Q$. We find that, if at least one of the fluids has non vanishing chemical potential, for instance $\\mu_x0$, the decay is possible, where $\\mu_x$ and $\\mu_{dm}$ are the chemical potentials of Dark Energy and Dark Matter, respectively. Using recent cosmological data, we find that, for a fairly simple interaction, the Dark Matter decay is favored with a probability of $\\sim 93%$ over the Dark Energy decay. This result comes from a likelihood analysis where only background evolution has been considered.

  18. Plan for Demonstration of Online Monitoring for the Light Water Reactor Sustainability Online Monitoring Project

    SciTech Connect (OSTI)

    Magdy S. Tawfik; Vivek Agarwal; Nancy J. Lybeck

    2011-09-01T23:59:59.000Z

    Condition based online monitoring technologies and development of diagnostic and prognostic methodologies have drawn tremendous interest in the nuclear industry. It has become important to identify and resolve problems with structures, systems, and components (SSCs) to ensure plant safety, efficiency, and immunity to accidents in the aging fleet of reactors. The Machine Condition Monitoring (MCM) test bed at INL will be used to demonstrate the effectiveness to advancement in online monitoring, sensors, diagnostic and prognostic technologies on a pilot-scale plant that mimics the hydraulics of a nuclear plant. As part of this research project, INL will research available prognostics architectures and their suitability for deployment in a nuclear power plant. In addition, INL will provide recommendation to improve the existing diagnostic and prognostic architectures based on the experimental analysis performed on the MCM test bed.

  19. From nuclear matter to Neutron Stars

    E-Print Network [OSTI]

    T. K. Jha

    2009-02-02T23:59:59.000Z

    Neutron stars are the most dense objects in the observable Universe and conventionally one uses nuclear theory to obtain the equation of state (EOS) of dense hadronic matter and the global properties of these stars. In this work, we review various aspects of nuclear matter within an effective Chiral model and interlink fundamental quantities both from nuclear saturation as well as vacuum properties and correlate it with the star properties.

  20. {\\Lambda}CDM cosmology from matter only

    E-Print Network [OSTI]

    Telkamp, Herman

    2015-01-01T23:59:59.000Z

    I discuss a matter-only interpretation of {\\Lambda}CDM cosmology, based on conservation of energy and assuming a Machian definition of inertia. {\\Lambda}CDM cosmology can be linked to a Newtonian cosmic potential, subject to a propagating gravitational horizon. In a matter-only universe where total energy is conserved, Machian inertia related to the evolving potential may cause both deceleration and acceleration of recession.

  1. Desorption of hexachlorobiphenyl from selected particulate matter

    E-Print Network [OSTI]

    Rorschach, Reagan Cartwright

    1989-01-01T23:59:59.000Z

    DESORPTION OF HEXACHLOROBIPHENYL FROM SELECTED PARTICULATE MATTER A Thesis by REAGAN CARTWRIGHT RORS CHACH Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 1989 Major Subject: Civil Engineering DESORPTION OF HEXACHLOROBIPHENYL FROM SELECTED PARTICULATE MATTER A Thesis by REAGAN C. RORSCHACH Approved as to style and content by: Robin L. Autenrieth (Chair of Committee...

  2. Magnetism and superconductivity in quark matter

    E-Print Network [OSTI]

    T. Tatsumi; E. Nakano; K. Nawa

    2005-06-01T23:59:59.000Z

    Magnetic properties of quark matter and its relation to the microscopic origin of the magnetic field observed in compact stars are studied. Spontaneous spin polarization appears in high-density region due to the Fock exchange term, which may provide a scenario for the behaviors of magnetars. On the other hand, quark matter becomes unstable to form spin density wave in the moderate density region, where restoration of chiral symmetry plays an important role. Coexistence of magnetism and color superconductivity is also discussed.

  3. Cosmology with a stiff matter era

    E-Print Network [OSTI]

    Pierre-Henri Chavanis

    2014-11-27T23:59:59.000Z

    We provide a simple analytical solution of the Friedmann equations for a universe made of stiff matter, dust matter, and dark energy. A stiff matter era is present in the cosmological model of Zel'dovich (1972) where the primordial universe is assumed to be made of a cold gas of baryons. It also occurs in certain cosmological models where dark matter is made of relativistic self-gravitating Bose-Einstein condensates (BECs). When the energy density of the stiff matter is positive, the primordial universe is singular. It starts from a state with a vanishing scale factor and an infinite density. We consider the possibility that the energy density of the stiff matter is negative (anti-stiff matter). This happens, for example, when the BECs have an attractive self-interaction. In that case, the primordial universe is non-singular. It starts from a state in which the scale factor is finite and the energy density is equal to zero. For the sake of generality, we consider a cosmological constant of arbitrary sign. When the cosmological constant is positive, the universe asymptotically reaches a de Sitter phase where the scale factor increases exponentially rapidly. This can account for the accelerating expansion of the universe that we observe at present. When the cosmological constant is negative (anti-de Sitter), the evolution of the universe is cyclic. Therefore, depending on the sign of the energy density of the stiff matter and of the dark energy, we obtain singular and non-singular expanding or cyclic universes.

  4. Dynamical dark matter. I. Theoretical overview

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

    Dienes, Keith R.; Thomas, Brooks

    2012-04-01T23:59:59.000Z

    In this paper, we propose a new framework for dark-matter physics. Rather than focus on one or more stable dark-matter particles, we instead consider a multicomponent framework in which the dark matter of the universe comprises a vast ensemble of interacting fields with a variety of different masses, mixings, and abundances. Moreover, rather than impose stability for each field individually, we ensure the phenomenological viability of such a scenario by requiring that those states with larger masses and standard-model decay widths have correspondingly smaller relic abundances, and vice versa. In other words, dark-matter stability is not an absolute requirement in such a framework, but is balanced against abundance. This leads to a highly dynamical scenario in which cosmological quantities such as ?CDM experience nontrivial time-dependences beyond those associated with the expansion of the universe. Although it may seem difficult to arrange an ensemble of states which have the required decay widths and relic abundances, we present one particular example in which this balancing act occurs naturally: an infinite tower of Kaluza-Klein (KK) states living in the bulk of large extra spacetime dimensions. Remarkably, this remains true even if the stability of the KK tower itself is entirely unprotected. Thus theories with large extra dimensions—and by extension, certain limits of string theory—naturally give rise to dynamical dark matter. Such scenarios also generically give rise to a rich set of collider and astrophysical phenomena which transcend those usually associated with dark matter.

  5. VAX online System - a modular approach

    SciTech Connect (OSTI)

    White, V.; Constanta-Fanourakis, P.; Heinicke, P.; Petravick, D.; Quigg, L.

    1985-08-01T23:59:59.000Z

    An approach to developing Online Systems for the VAX, under VMS, is described. A framework for integrating separate and diverse programs into a unified whole is described. Included in this is a scheme which permits multiple VAX processes to share the same terminal in an organized way. This makes use of a menu package, (MENCOM), which also permits a command line mode of operation, with dynamic switching between menu and command line mode. A single DISPLAY program can display the histograms of any program in the system, both the in-memory histograms and those previously stored on disk. A centralized message system is designed to handle all error and status messages. A general buffer scheme used to enter data from any input stream and to access data selectively is briefly described. This buffer scheme is covered in more detail, by D. Quarrie in his CDF Data Acquisition System paper, given at this conference.

  6. On-line tritium production monitor

    DOE Patents [OSTI]

    Mihalczo, J.T.

    1993-11-23T23:59:59.000Z

    A scintillation optical fiber system for the on-line monitoring of nuclear reactions in an event-by-event manner is described. In the measurement of tritium production one or more optical fibers are coated with enriched {sup 6}Li and connected to standard scintillation counter circuitry. A neutron generated {sup 6}Li(n)T reaction occurs in the coated surface of {sup 6}Li-coated fiber to produce energetic alpha and triton particles one of which enters the optical fiber and scintillates light through the fiber to the counting circuit. The coated optical fibers can be provided with position sensitivity by placing a mirror at the free end of the fibers or by using pulse counting circuits at both ends of the fibers. 5 figures.

  7. On-line tritium production monitor

    DOE Patents [OSTI]

    Mihalczo, John T. (Oak Ridge, TN)

    1993-01-01T23:59:59.000Z

    A scintillation optical fiber system for the on-line monitoring of nuclear reactions in an event-by-event manner is described. In the measurement of tritium production one or more optical fibers are coated with enriched .sup.6 Li and connected to standard scintillation counter circuitry. A neutron generated .sup.6 Li(n )T reaction occurs in the coated surface of .sup.6 Li-coated fiber to produce energetic alpha and triton particles one of which enters the optical fiber and scintillates light through the fiber to the counting circuit. The coated optical fibers can be provided with position sensitivity by placing a mirror at the free end of the fibers or by using pulse counting circuits at both ends of the fibers.

  8. Trends Online: A Compendium of Data on Global Change

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Data records are presented in multipage formats, each dealing with a specific site, region, or emissions species. The data records include tables; graphs; discussions of methods for collecting, measuring, and reporting the data; trends in the data, and references to literature providing further information. Instructions for citing specific data in Trends Online are provided for each compiled data set. All data appearing in Trends Online are available, on request, on digital media from CDIAC at no cost. [Copied from the Abstract to Trends Online at http://cdiac.ornl.gov/trends/abstract.htm

  9. On-line chemical composition analyzer development

    SciTech Connect (OSTI)

    Roberts, M.J.; Garrison, A.A.; Muly, E.C.; Moore, C.F.

    1992-02-01T23:59:59.000Z

    The energy consumed in distillation processes in the United States represents nearly three percent of the total national energy consumption. If effective control of distillation columns can be accomplished, it has been estimated that it would result in a reduction in the national energy consumption of 0.3%. Real-time control based on mixture composition could achieve these savings. However, the major distillation processes represent diverse applications and at present there does not exist a proven on-line chemical composition sensor technology which can be used to control these diverse processes in real-time. This report presents a summary of the findings of the second phase of a three phase effort undertaken to develop an on-line real-time measurement and control system utilizing Raman spectroscopy. A prototype instrument system has been constructed utilizing a Perkin Elmer 1700 Spectrometer, a diode pumped YAG laser, two three axis positioning systems, a process sample cell land a personal computer. This system has been successfully tested using industrially supplied process samples to establish its performance. Also, continued application development was undertaken during this Phase of the program using both the spontaneous Raman and Surface-enhanced Raman modes of operation. The study was performed for the US Department of Energy, Office of Industrial Technologies, whose mission is to conduct cost-shared R D for new high-risk, high-payoff industrial energy conservation technologies. Although this document contains references to individual manufacturers and their products, the opinions expressed on the products reported do not necessarily reflect the position of the Department of Energy.

  10. Light Higgses and Dark Matter Bob McElrath

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Light Higgses and Dark Matter Bob McElrath University of California, Davis Santa Cruz, February 26, 2007 #12;Light Low-Mass Dark Matter Bob McElrath University of California, Davis ICHEP, January 2, 2007 and Expectations for Light Dark Matter · Invisible Quarkonium Decays · Light Dark Matter from SUSY · Detection

  11. Search for pseudoscalar cold dark matter

    SciTech Connect (OSTI)

    van Bibber, K.; Stoeffl, W.; LLNL Collaborators

    1992-05-29T23:59:59.000Z

    AH dynamical evidence points to the conclusion that the predominant form of matter in the universe is in a non-luminous form. Furthermore, large scale deviations from uniform Hubble flow, and the recent COBE reports of inhomogeneities in the cosmic microwave background strongly suggest that we live in an exactly closed universe. If this is true, then ordinary baryonic matter could only be a minority component (10% at most) of the missing mass, and that what constitutes the majority of the dark matter must involve new physics. The axion is one of very few well motivated candidates which may comprise the dark matter. Additionally it is a `cold` dark-matter candidate which is preferred by the COBE data. We propose to construct and operate an experiment to search for axions which may constitute the dark matter of our own galaxy. As proposed by Sikivie, dark-matter axions may be detected by their stimulated conversion into monochromatic microwave photons in a tunable high-Q cavity inside a strong magnetic field. Our ability to mount an experiment quickly and take data within one year is due to a confluence of three factors. The first is the availability of a compact high field superconducting magnet and a local industrial partner, Wang NMR, who can make a very thermally efficient and economical cryostat for it. The second is an ongoing joint venture with the Institute for Nuclear Research of the Russian Academy of Sciences to do R&D on metalized precision-formed ceramic microwave cavities for the axion search, and INR has commited to providing all the microwave cavity arrays for this experiment, should this proposal be approved. The third is a commitment of very substantial startup capital monies from MIT for all of the state-of-the-art ultra-low noise microwave electronics, to one of our outstanding young collaborators who is joining their faculty.

  12. Oxford Colleges On-line Reports for Tutorials

    E-Print Network [OSTI]

    Oxford, University of

    OxCORT Oxford Colleges On-line Reports for Tutorials Tutor Role Version 4.5 BSP Training TeamCORT..........................................................................5 Roles in OxCORT..................................................................................5 of Revision Class reports.......................................................8 Report states

  13. Chinese online BBS sphere : what BBS has brought to China

    E-Print Network [OSTI]

    Jin, Liwen, S.M. Massachusetts Institute of Technology

    2008-01-01T23:59:59.000Z

    This thesis explores various aspects of the online Bulletin Board System (BBS) world as they relate to the possibilities of the public sphere in China. It addresses two major questions: what has BBS brought to China where ...

  14. Niwot Ridge CRN Station Up & On-Line.

    E-Print Network [OSTI]

    Niwot Ridge CRN Station Up & On-Line. I made a decision after the Science Panel Review to put tree removal Wind Speed 3, terrain elevation change Solar Radiation 3, solar shading to west #12;

  15. Inventing a Novel Sensor for Online Motor Monitoring | GE Global...

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

    Inventing a Novel Sensor for Online Motor Monitoring Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new...

  16. akademik online sebagai: Topics by E-print Network

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

    Websites Summary: Is Available 24 7 Call 1-866-SKIL-HELP (1-866-754-5435) SkillSoft Technical Support Submit an online problem report Support@SkillSoft.com Or call Toll Free at...

  17. Collection, evaluation, and diffusion of information in online communities

    E-Print Network [OSTI]

    Mamas, Evangelos

    2006-01-01T23:59:59.000Z

    In this thesis, I study a number of online information communities to understand how open practices are currently used in supporting community functions. By examining how communities operate, I hope to provide individuals ...

  18. Allocating online advertisement space with unreliable estimates Mohammad Mahdian

    E-Print Network [OSTI]

    Saberi, Amin

    mahdian@yahoo-inc.com Hamid Nazerzadeh Stanford University hamidnz@stanford.edu Amin Saberi Stanford University saberi@stanford.edu Abstract We study the problem of optimally allocating online advertisement

  19. Online allocation algorithms with applications in computational advertising

    E-Print Network [OSTI]

    Zadimoghaddam, Morteza

    2014-01-01T23:59:59.000Z

    Over the last few decades, a wide variety of allocation markets emerged from the Internet and introduced interesting algorithmic challenges, e.g., ad auctions, online dating markets, matching skilled workers to jobs, etc. ...

  20. Northeast Home Heating Oil Reserve- Online Bidding System

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy has developed an on-line bidding system - an anonymous auction program - for the sale of product from the one million barrel Northeast Home Heating Oil Reserve.

  1. Learning with Online Constraints: Shifting Concepts and Active Learning

    E-Print Network [OSTI]

    Monteleoni, Claire E.

    2006-09-01T23:59:59.000Z

    Many practical problems such as forecasting, real-time decisionmaking, streaming data applications, and resource-constrainedlearning, can be modeled as learning with online constraints. Thisthesis is concerned with analyzing ...

  2. Learning with online constraints : shifting concepts and active learning

    E-Print Network [OSTI]

    Monteleoni, Claire E. (Claire Elizabeth), 1975-

    2006-01-01T23:59:59.000Z

    Many practical problems such as forecasting, real-time decision making, streaming data applications, and resource-constrained learning, can be modeled as learning with online constraints. This thesis is concerned with ...

  3. On-line hydraulic state prediction for water distribution systems

    E-Print Network [OSTI]

    Whittle, Andrew

    This paper describes and demonstrates a method for on?line hydraulic state prediction in urban water networks. The proposed method uses a Predictor?Corrector (PC) approach in which a statistical data?driven algorithm is ...

  4. When Does Retargeting Work? Information Specificity in Online Advertising

    E-Print Network [OSTI]

    Lambrecht, Anja

    Firms can now offer personalized recommendations to consumers who return to their website, using consumers' previous browsing history on that website. In addition, online advertising has greatly improved in its use of ...

  5. A strategic analysis of online grocery and its future outlook

    E-Print Network [OSTI]

    Xie, Kang, 1973-

    2004-01-01T23:59:59.000Z

    (cont.) are suggested to help future online grocers avoid the mistakes made by the earlier attempt, align their business strategy with the growing consumer interest in specialty foods and wellness services and find the ...

  6. Designing for remixing : supporting an Online community of amateur creators

    E-Print Network [OSTI]

    Monroy-Hernández, Andrés

    2012-01-01T23:59:59.000Z

    This work describes a framework for the design and study of an online community of amateur creators. I focus on remixing as the lens to understand the contexts and processes of creative expression as it is fostered within ...

  7. Online Modeling in the Process Industry for Energy Optimization

    E-Print Network [OSTI]

    Alexander, J.

    "This paper discusses how steady state models are being used in the process industry to perform online energy optimization of steam and electrical systems. It presents process demands commonly found in the processing industry in terms of steam...

  8. Online Pricing of Secondary Spectrum Access with Unknown Demand Function

    E-Print Network [OSTI]

    Starobinski, David

    consider a set-up consistent with the The authors are affiliated with the Department of Electrical contracts and are not subjected to on-line pric- ing. On the other hand, SUs are admitted and priced

  9. Optimization Online - Ship Traffic Optimization for the Kiel Canal

    E-Print Network [OSTI]

    Elisabeth Lübbecke

    2014-12-01T23:59:59.000Z

    Dec 1, 2014 ... This leads us to construct a fast online heuristic. The STCP ... In view of computational experiments on real traffic data expert planners approved that our combinatorial algorithm is well-suited for this decision support. With the ...

  10. Working Group Report: Dark Matter Complementarity (Dark Matter in the Coming Decade: Complementary Paths to Discovery and Beyond)

    SciTech Connect (OSTI)

    Arrenberg, Sebastian; et al.,

    2013-10-31T23:59:59.000Z

    In this Report we discuss the four complementary searches for the identity of dark matter: direct detection experiments that look for dark matter interacting in the lab, indirect detection experiments that connect lab signals to dark matter in our own and other galaxies, collider experiments that elucidate the particle properties of dark matter, and astrophysical probes sensitive to non-gravitational interactions of dark matter. The complementarity among the different dark matter searches is discussed qualitatively and illustrated quantitatively in several theoretical scenarios. Our primary conclusion is that the diversity of possible dark matter candidates requires a balanced program based on all four of those approaches.

  11. Color superconductivity and dense quark matter

    E-Print Network [OSTI]

    Massimo Mannarelli

    2008-12-26T23:59:59.000Z

    The properties of cold and dense quark matter have been the subject of extensive investigation, especially in the last decade. Unfortunately, we still lack of a complete understanding of the properties of matter in these conditions. One possibility is that quark matter is in a color superconducting phase which is characterized by the formation of a diquark condensate. We review some of the basic concepts of color superconductivity and some of the aspects of this phase of matter which are relevant for compact stars. Since quarks have color, flavor as well as spin degrees of freedom many different color superconducting phases can be realized. At asymptotic densities QCD predicts that the color flavor locked phase is favored. At lower densities where the QCD coupling constant is large, perturbative methods cannot be applied and one has to rely on some effective model, eventually trying to constrain such a model with experimental observations. The picture is complicated by the requirement that matter in the interior of compact stars is in weak equilibrium and neutral. These conditions and the (possible) large value of the strange quark mass conspire to separate the Fermi momenta of quarks with different flavors, rendering homogenous superconducting phases unstable. One of the aims of this presentation is to introduce non-experts in the field to some of the basic ideas of color superconductivity and to some of its open problems.

  12. INFORMED CONSENT FOR ONLINE SURVEYS TEMPLATE The following is the required content for informed consent for online surveys. The information by the asterisks

    E-Print Network [OSTI]

    INFORMED CONSENT FOR ONLINE SURVEYS TEMPLATE The following is the required content for informed consent for online surveys. The information by the asterisks (*1-4) should be written to reflect your for any online survey. Create a multiple choice question for prospective participants to indicate

  13. Isospin dependent properties of asymmetric nuclear matter

    SciTech Connect (OSTI)

    Chowdhury, P. Roy [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700 064 (India); Basu, D. N. [Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700 064 (India); Samanta, C. [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700 064 (India); Physics Department, Virginia Commonwealth University, Richmond, Virginia 232840 (United States); Physics Department, University of Richmond, Virginia 23173 (United States)

    2009-07-15T23:59:59.000Z

    The density dependence of nuclear symmetry energy is determined from a systematic study of the isospin dependent bulk properties of asymmetric nuclear matter using the isoscalar and isovector components of the density dependent M3Y interaction. The incompressibility K{sub {infinity}} for the symmetric nuclear matter, the isospin dependent part K{sub asy} of the isobaric incompressibility, and the slope L are all in excellent agreement with the constraints recently extracted from measured isotopic dependence of the giant monopole resonances in even-A Sn isotopes, from the neutron skin thickness of nuclei, and from analyses of experimental data on isospin diffusion and isotopic scaling in intermediate energy heavy-ion collisions. This work provides a fundamental basis for the understanding of nuclear matter under extreme conditions and validates the important empirical constraints obtained from recent experimental data.

  14. Isospin dependent properties of asymmetric nuclear matter

    E-Print Network [OSTI]

    P. Roy Chowdhury; D. N. Basu; C. Samanta

    2009-07-15T23:59:59.000Z

    The density dependence of nuclear symmetry energy is determined from a systematic study of the isospin dependent bulk properties of asymmetric nuclear matter using the isoscalar and the isovector components of density dependent M3Y interaction. The incompressibility $K_\\infty$ for the symmetric nuclear matter, the isospin dependent part $K_{asy}$ of the isobaric incompressibility and the slope $L$ are all in excellent agreement with the constraints recently extracted from measured isotopic dependence of the giant monopole resonances in even-A Sn isotopes, from the neutron skin thickness of nuclei and from analyses of experimental data on isospin diffusion and isotopic scaling in intermediate energy heavy-ion collisions. This work provides a fundamental basis for the understanding of nuclear matter under extreme conditions, and validates the important empirical constraints obtained from recent experimental data.

  15. Neutrino matter potentials induced by Earth

    E-Print Network [OSTI]

    J. Linder

    2006-01-15T23:59:59.000Z

    An instructive method of deriving the matter potentials felt by neutrinos propagating through matter on Earth is presented. This paper thoroughly guides the reader through the calculations involving the effective weak Hamiltonian for lepton and quark scattering. The matter potentials are well-known results since the late 70's, but a detailed and pedagogical calculation of these quantities is hard to find. We derive potentials due to charged and neutral current scattering on electrons, neutrons and protons. Intended readership is for undergraduates/graduates in the fields of relativistic quantum mechanics and quantum field theory. In addition to the derivation of the potentials for neutrinos, we explicitely study the origin of the reversed sign for potentials in the case of antineutrino-scattering.

  16. Towards a 'Thermodynamics' of Active Matter

    E-Print Network [OSTI]

    Sho C. Takatori; John F. Brady

    2014-11-21T23:59:59.000Z

    Self-propulsion allows living systems to display unusual collective behavior. Unlike passive systems in thermal equilibrium, active matter systems are not constrained by conventional thermodynamic laws. A question arises however as to what extent, if any, can concepts from classical thermodynamics be applied to nonequilibrium systems like active matter. Here we use the new swim pressure perspective to develop a simple theory for predicting phase separation in active matter. Using purely mechanical arguments we generate a phase diagram with a spinodal and critical point, and define a nonequilibrium chemical potential to interpret the "binodal." We provide a generalization of thermodynamic concepts like the free energy and temperature for nonequilibrium active systems. Our theory agrees with existing simulation data both qualitatively and quantitatively and may provide a framework for understanding and predicting the behavior of nonequilibrium active systems.

  17. Strong dark matter constraints on GMSB models

    E-Print Network [OSTI]

    F. Staub; W. Porod; J. Niemeyer

    2010-01-18T23:59:59.000Z

    We reconsider the dark matter problem in supersymmetric models with gauge mediated supersymmetry breaking, with and without R-parity breaking. In these classes of models, a light gravitino forms the dark matter.Consistency with the experimental data, in particular the dark matter abundance and the small-scale power spectrum, requires additional entropy production after the decoupling of the gravitino from the thermal bath. We demonstrate that the usual mechanism via messenger number violating interactions does not work in models where the messenger belongs to SU (5) representations. This is mainly a consequence of two facts: (i) there are at least two different types of lightest messenger particles and (ii) the lightest messenger particle with SU (2) quantum numbers decays dominantly into vector bosons once messenger number is broken, a feature which has been overlooked so far. In case of SO(10) messenger multiplets we find scenarios which work if the SM gauge singlet component is rather light.

  18. Strong dark matter constraints on GMSB models

    E-Print Network [OSTI]

    Staub, F; Niemeyer, J

    2009-01-01T23:59:59.000Z

    We reconsider the dark matter problem in supersymmetric models with gauge mediated supersymmetry breaking, with and without R-parity breaking. In these classes of models, a light gravitino forms the dark matter.Consistency with the experimental data, in particular the dark matter abundance and the small-scale power spectrum, requires additional entropy production after the decoupling of the gravitino from the thermal bath. We demonstrate that the usual mechanism via messenger number violating interactions does not work in models where the messenger belongs to SU (5) representations. This is mainly a consequence of two facts: (i) there are at least two different types of lightest messenger particles and (ii) the lightest messenger particle with SU (2) quantum numbers decays dominantly into vector bosons once messenger number is broken, a feature which has been overlooked so far. In case of SO(10) messenger multiplets we find scenarios which work if the SM gauge singlet component is rather light.

  19. Solitonic axion condensates modeling dark matter halos

    SciTech Connect (OSTI)

    Castañeda Valle, David, E-mail: casvada@gmail.com; Mielke, Eckehard W., E-mail: ekke@xanum.uam.mx

    2013-09-15T23:59:59.000Z

    Instead of fluid type dark matter (DM), axion-like scalar fields with a periodic self-interaction or some truncations of it are analyzed as a model of galaxy halos. It is probed if such cold Bose–Einstein type condensates could provide a viable soliton type interpretation of the DM ‘bullets’ observed by means of gravitational lensing in merging galaxy clusters. We study solitary waves for two self-interacting potentials in the relativistic Klein–Gordon equation, mainly in lower dimensions, and visualize the approximately shape-invariant collisions of two ‘lump’ type solitons. -- Highlights: •An axion model of dark matter is considered. •Collision of axion type solitons are studied in a two dimensional toy model. •Relations to dark matter collisions in galaxy clusters are proposed.

  20. Bi-metric Gravity and "Dark Matter"

    E-Print Network [OSTI]

    I. T. Drummond

    2000-08-18T23:59:59.000Z

    We present a bi-metric theory of gravity containing a length scale of galactic size. For distances less than this scale the theory satisfies the standard tests of General Relativity. For distances greater than this scale the theory yields an effective gravitational constant much larger than the locally observed value of Newton's constant. The transition from one regime to the other through the galactic scale can explain the observed rotation curves of galaxies and hence the effects normally attributed to the presence of dark matter. Phenomena on an extragalactic scale such as galactic clusters and the expansion of the universe are controlled by the enhanced gravitational coupling. This provides an explanation of the missing matter normally invoked to account for the observed value of Hubble's constant in relation to observed matter.

  1. Semiconductor Probes of Light Dark Matter

    E-Print Network [OSTI]

    Peter W. Graham; David E. Kaplan; Surjeet Rajendran; Matthew T. Walters

    2012-11-12T23:59:59.000Z

    Dark matter with mass below about a GeV is essentially unobservable in conventional direct detection experiments. However, newly proposed technology will allow the detection of single electron events in semiconductor materials with significantly lowered thresholds. This would allow detection of dark matter as light as an MeV in mass. Compared to other detection technologies, semiconductors allow enhanced sensitivity because of their low ionization energy around an eV. Such detectors would be particularly sensitive to dark matter with electric and magnetic dipole moments, with a reach many orders of magnitude beyond current bounds. Observable dipole moment interactions can be generated by new particles with masses as great as 1000 TeV, providing a window to scales beyond the reach of current colliders.

  2. Interferometry with correlated matter-waves

    E-Print Network [OSTI]

    Oksana I. Streltsova; Alexej I. Streltsov

    2014-12-12T23:59:59.000Z

    Matter-wave interferometry of ultra-cold atoms with attractive interactions is studied at the full many-body level. First, we study how a coherent light-pulse applied to an initially-condensed solitonic system splits it into two matter-waves. The split system looses its coherence and develops correlations with time, and inevitably becomes fragmented due to inter-particle attractions. Next, we show that by re-colliding the sub-clouds constituting the split density together, along with a simultaneous application of the same laser-pulse, one creates three matter-waves propagating with different momenta. We demonstrate that the number of atoms in the sub-cloud with zero-momentum is directly proportional to the degree of fragmentation in the system. This interferometric-based protocol to discriminate, probe, and measure the fragmentation is general and can be applied to ultra-cold systems with attractive, repulsive, short- and long-range interactions.

  3. Online Learning: Stochastic and Constrained Adversaries

    E-Print Network [OSTI]

    Rakhlin, Alexander; Tewari, Ambuj

    2011-01-01T23:59:59.000Z

    Learning theory has largely focused on two main learning scenarios. The first is the classical statistical setting where instances are drawn i.i.d. from a fixed distribution and the second scenario is the online learning, completely adversarial scenario where adversary at every time step picks the worst instance to provide the learner with. It can be argued that in the real world neither of these assumptions are reasonable. It is therefore important to study problems with a range of assumptions on data. Unfortunately, theoretical results in this area are scarce, possibly due to absence of general tools for analysis. Focusing on the regret formulation, we define the minimax value of a game where the adversary is restricted in his moves. The framework captures stochastic and non-stochastic assumptions on data. Building on the sequential symmetrization approach, we define a notion of distribution-dependent Rademacher complexity for the spectrum of problems ranging from i.i.d. to worst-case. The bounds let us imm...

  4. PUBLISHED ONLINE: 2 NOVEMBER 2014 | DOI: 10.1038/NPHYS3135 Collisions of matter-wave solitons

    E-Print Network [OSTI]

    Loss, Daniel

    we explore the nature of soliton collisions using Bose­Einstein condensates of atoms with attractive of the nonlinear interaction. Our methods for producing a degenerate gas of 7 Li atoms have been described previously14 and are given in the Methods section. A Bose­Einstein condensate of atoms in the |F =1,mF =1

  5. 1/8/08 8:07 PM Oasis, Online Abstract Submission and Invitation System Program Planner

    E-Print Network [OSTI]

    Guedel, Manuel

    1/8/08 8:07 PM Oasis, Online Abstract Submission and Invitation System ­ Program Planner Page 1. The Online Abstract Submission and Invitation System #12; 1/8/08 8:07 PM Oasis, Online Abstract Submission

  6. -"The effect of Perceived risk on the process of online buying electrical products by Jordanian consumers in Amman", Journal of

    E-Print Network [OSTI]

    -"The effect of Perceived risk on the process of online buying electrical products by Jordanian the effect of Perceived risk on the process of online buying electrical products by Jordanian consumers of online buying electrical products by Jordanian consumers. #12;

  7. Classified Matter Protection and Control Manual

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2001-04-17T23:59:59.000Z

    This Manual supplements DOE O 471.2A, Information Security Program, and provides detailed requirements for the protection and control of classified matter. Cancels DOE M 471.2-1B except Chapter III paragraphs 1 and 2, and Chapter IV.

  8. Exploring ? signals in dark matter detectors

    SciTech Connect (OSTI)

    Harnik, Roni; Kopp, Joachim; Machado, Pedro A.N., E-mail: roni@fnal.gov, E-mail: jkopp@fnal.gov, E-mail: accioly@fma.if.usp.br [Fermilab, P.O. Box 500, Batavia, IL 60510-0500 (United States)

    2012-07-01T23:59:59.000Z

    We investigate standard and non-standard solar neutrino signals in direct dark matter detection experiments. It is well known that even without new physics, scattering of solar neutrinos on nuclei or electrons is an irreducible background for direct dark matter searches, once these experiments reach the ton scale. Here, we entertain the possibility that neutrino interactions are enhanced by new physics, such as new light force carriers (for instance a ''dark photon'') or neutrino magnetic moments. We consider models with only the three standard neutrino flavors, as well as scenarios with extra sterile neutrinos. We find that low-energy neutrino-electron and neutrino-nucleus scattering rates can be enhanced by several orders of magnitude, potentially enough to explain the event excesses observed in CoGeNT and CRESST. We also investigate temporal modulation in these neutrino signals, which can arise from geometric effects, oscillation physics, non-standard neutrino energy loss, and direction-dependent detection efficiencies. We emphasize that, in addition to providing potential explanations for existing signals, models featuring new physics in the neutrino sector can also be very relevant to future dark matter searches, where, on the one hand, they can be probed and constrained, but on the other hand, their signatures could also be confused with dark matter signals.

  9. Photonic dark matter portal and quantum physics

    E-Print Network [OSTI]

    S. A. Alavi; F. S. Kazemian

    2015-01-22T23:59:59.000Z

    To identify the nature and properties of dark matter is one of the most serious open problems in modern physics. We study a model of dark matter in which the hidden sector interacts with ordinary matter (standard model particles) via photonic portal(hidden photonic portal). We search for the effects of this new interaction in quantum physics, therefore we study its effects on hydrogen atom because it is a simple and a well-studied quantum system so it can be considered as an outstanding test for dark matter signatures. Using the accuracy of the measurement of energy, we obtain an upper bound for the coupling constant of the model. We also calculate the contribution to the anomalous magnetic moment of muon due to the hidden photonic portal. At the moment there is a deviation between the standard model prediction for muon anomalous magnetic moment and its experimental value so the anomalous magnetic moment of muon can provide an important test of the standard model and the theories beyond it.

  10. Alternatives to Dark Matter and Dark Energy

    E-Print Network [OSTI]

    Philip D. Mannheim

    2005-08-01T23:59:59.000Z

    We review the underpinnings of the standard Newton-Einstein theory of gravity, and identify where it could possibly go wrong. In particular, we discuss the logical independence from each other of the general covariance principle, the equivalence principle and the Einstein equations, and discuss how to constrain the matter energy-momentum tensor which serves as the source of gravity. We identify the a priori assumption of the validity of standard gravity on all distance scales as the root cause of the dark matter and dark energy problems, and discuss how the freedom currently present in gravitational theory can enable us to construct candidate alternatives to the standard theory in which the dark matter and dark energy problems could then be resolved. We identify three generic aspects of these alternate approaches: that it is a universal acceleration scale which determines when a luminous Newtonian expectation is to fail to fit data, that there is a global cosmological effect on local galactic motions which can replace galactic dark matter, and that to solve the cosmological constant problem it is not necessary to quench the cosmological constant itself, but only the amount by which it gravitates.

  11. Particle Dark Matter and its Detection

    E-Print Network [OSTI]

    Angel Morales

    1998-10-21T23:59:59.000Z

    The status and prospects of the experimental efforts in the detection of Particle Dark Matter is reviewed. Emphasis is put in the direct searches for WIMPs (Weakly Interacting Massive Particles), outlining the various strategies and techniques currently followed and sumarizing the results. A briefing of the indirect methods of WIMP detection is also presented.

  12. An Ultimate Target for Dark Matter Searches

    E-Print Network [OSTI]

    Kfir Blum; Yanou Cui; Marc Kamionkowski

    2014-12-10T23:59:59.000Z

    The combination of S-matrix unitarity and the dynamics of thermal freeze-out for massive relic particles (denoted here simply by WIMPs) implies a lower limit on the density of such particles, that provide a (potentially sub-dominant) contribution to dark matter. This then translates to lower limits to the signal rates for a variety of techniques for direct and indirect detection of dark matter. For illustration, we focus on models where annihilation is s-wave dominated. We derive lower limits to the flux of gamma-rays from WIMP annihilation at the Galactic center; direct detection of WIMPs; energetic neutrinos from WIMP annihilation in the Sun; and the effects of WIMPs on the angular power spectrum and frequency spectrum of the cosmic microwave background radiation. The results suggest that a variety of dark-matter-search techniques may provide interesting avenues to seek new physics, even if WIMPs do not constitute all the dark matter. While the limits are quantitatively some distance from the reach of current measurements, they may be interesting for long-range planning exercises.

  13. Direct Detection of Galactic Halo Dark Matter

    E-Print Network [OSTI]

    Oppenheimer, Ben R.

    inferred because the grav- itational field due to the known distribution of luminous matter, primarily, photographic plates in the R59F and BJ pass- bands from the SuperCOSMOS Sky Survey (12­14). R59F and BJ roughly% of the sky. Because of image blending problems and large halos of scattered light around bright stars

  14. DAE?ALUS and dark matter detection

    E-Print Network [OSTI]

    Krnjaic, Gordan

    Among laboratory probes of dark matter, fixed-target neutrino experiments are particularly well suited to search for light weakly coupled dark sectors. In this paper, we show that the DAE?ALUS source setup—an 800 MeV proton ...

  15. Dark Matter Related to Axion and Axino

    E-Print Network [OSTI]

    Jihn E. Kim

    2008-10-30T23:59:59.000Z

    I discuss the essential features of the QCD axion: the strong CP solution and hence its theoretical necessity. I also review the axion and axino effects on astrophysics and cosmology, in particular with emphasis on their role in the dark matter component in the universe.

  16. FRW Cosmologies with Adiabatic Matter Creation

    E-Print Network [OSTI]

    J. A. S. Lima; A. S. M. Germano; L. R. W. Abramo

    1995-11-02T23:59:59.000Z

    Some properties of cosmological models with matter creation are investigated in the framework of the Friedman-Robertson-Walker (FRW) line element. For adiabatic matter creation, as developed by Prigogine and coworkers, we derive a simple expression relating the particle number density $n$ and energy density $\\rho$ which holds regardless of the matter creation rate. The conditions to generate inflation are discussed and by considering the natural phenomenological matter creation rate $\\psi =3 \\beta nH$, where $\\beta$ is a pure number of the order of unity and $H$ is the Hubble parameter, a minimally modified hot big-bang model is proposed. The dynamic properties of such models can be deduced from the standard ones simply by replacing the adiabatic index $\\gamma$ of the equation of state by an effective parameter $\\gamma_{*} = \\gamma (1 - \\beta)$. The thermodynamic behavior is determined and it is also shown that ages large enough to agree with observations are obtained even given the high values of $H$ suggested by recent measurements.

  17. An Alternative to Particle Dark Matter

    E-Print Network [OSTI]

    Justin Khoury

    2014-12-11T23:59:59.000Z

    We propose an alternative to particle dark matter that borrows ingredients of MOdified Newtonian Dynamics (MOND) while adding new key components. The first new feature is a dark matter fluid, in the form of a scalar field with small equation of state and sound speed. This component is critical in reproducing the success of cold dark matter for the expansion history and the growth of linear perturbations, but does not cluster significantly on non-linear scales. Instead, the missing mass problem on non-linear scales is addressed by a modification of the gravitational force law. The force law approximates MOND at large and intermediate accelerations, and therefore reproduces the empirical success of MOND at fitting galactic rotation curves. At ultra-low accelerations, the force law reverts to an inverse-square-law, albeit with a larger Newton's constant. This latter regime is important in galaxy clusters and is consistent with their observed isothermal profiles, provided the characteristic acceleration scale of MOND is mildly varying with scale or mass, such that it is ~12 times higher in clusters than in galaxies. We present an explicit relativistic theory in terms of two scalar fields. The first scalar field is governed by a Dirac-Born-Infeld action and behaves as a dark matter fluid on large scales. The second scalar field also has single-derivative interactions and mediates a fifth force that modifies gravity on non-linear scales. Both scalars are coupled to matter via an effective metric that depends locally on the fields. The form of this effective metric implies the equality of the two scalar gravitational potentials, which ensures that lensing and dynamical mass estimates agree. Further work is needed in order to make both the acceleration scale of MOND and the fraction at which gravity reverts to an inverse-square law explicitly dynamical quantities, varying with scale or mass.

  18. Using Light to Control How X Rays Interact with Matter

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

    Using Light to Control How X Rays Interact with Matter Print Schemes that use one light pulse to manipulate interactions of another with matter are well developed in the...

  19. Veto for the ZEPLIN-III dark matter detector 

    E-Print Network [OSTI]

    Barnes, Emma Jayne

    2010-01-01T23:59:59.000Z

    Cold dark matter in the form of weakly interacting massive particles (WIMPs) is a favoured explanation to the galactic dark matter puzzle and could account for a large proportion of the missing mass of the Universe. ...

  20. Concentrations and Size Distributions of Particulate Matter Emissions...

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

    Matter Emissions from Catalyzed Trap-Equipped Heavy-duty Diesel Vehicles Operating on Ultra-low Sulfur EC-D Fuel Concentrations and Size Distributions of Particulate Matter...

  1. TSO-01113 - In the Matter of Personnel Security Hearing | Department...

    Office of Environmental Management (EM)

    TSO-01113 - In the Matter of Personnel Security Hearing TSO-01113 - In the Matter of Personnel Security Hearing The individual currently is employed by a DOE contractor, and that...

  2. Bulk viscosity in nuclear and quark matter: A short review

    E-Print Network [OSTI]

    Hui Dong; Nan Su; Qun Wang

    2007-03-05T23:59:59.000Z

    The history and recent progresses in the study of bulk viscosity in nuclear and quark matter are reviewed. The constraints from baryon number conservation and electric neutrality in quark matter on particle densities and fluid velocity divergences are discussed.

  3. Pseudo-Goldstone modes in isospin-asymmetric nuclear matter

    SciTech Connect (OSTI)

    Cohen, T.D. [Univ. of Washington, Seattle, WA (United States); Broniowski, W. [H. Niewodniczanski Institute of Nuclear Physics, Cracow (Poland)

    1995-01-01T23:59:59.000Z

    The authors analyze the chiral limit in dense isospin-asymmetric nuclear matter. It is shown that the pseudo-Goldstone modes in this system are qualitatively different from the case of isospin-symmetric matter.

  4. Modeling of on-line catalyst addition effects in a short contact time reactor

    SciTech Connect (OSTI)

    D. K. Zerkle; M. d. Allendorf; M. Wolf; O. Deutschmann

    2000-07-30T23:59:59.000Z

    Recently developed short-contact-time reactors (SCTR), consisting of porous alumina monoliths coated with platinum, have been shown to produce ethylene from rich ethane/oxygen(hydrogen) mixtures with yields and selectivities comparable to conventional steam cracking, using a reactor of much smaller size. Although the overall mechanism is clearly autothermal and catalytic, the details, in particular the relative contributions of heterogeneous and homogeneous chemistry, are a matter of considerable debate. Recent experiments show that reactor performance can be further enhanced by dripping a dilute platinum solution onto the SCTR front face during reaction, resulting in catalyst deposition within only a short (several millimeter) zone of the reactor. The authors have undertaken a computational study of this system, using two-dimensional computational fluid dynamics simulations with full heat and mass transport and detailed heterogeneous and homogeneous kinetic mechanisms. The results indicate that front-face catalyst loading enhances reactor performance by limiting the opportunity for heterogeneous ethane reactions that produce methane. As a result, ethylene selectivity increases and CH{sub 4} selectivity decreases. The results strongly support a mechanism recently proposed by the authors, in which rapid, heterogeneous oxidation of adsorbed hydrogen consumes most of the oxygen. The resulting heat is then released to the gas phase, causing homogeneous pyrolysis of ethane to occur in an environment containing much less oxygen. This mechanism explains not only the effects of on-line catalyst addition, but also the increase in ethylene selectivity observed upon addition of hydrogen to the reactant mixture.

  5. The Problem of Big Bang Matter vs. AntiMatter Symmetry

    E-Print Network [OSTI]

    Roger Ellman

    2011-11-07T23:59:59.000Z

    -The favored Big Bang concept is that the original symmetry was skewed, the universe now being all matter, all antimatter having annihilated. -The mechanism of matter/antimatter annihilation is analyzed. A total annihilation of original antimatter could not have occurred; the skewing is unnecessary; and the universe must contain equally both forms of matter. -Current detection of cosmic matter/antimatter annihilations is Gamma Ray Bursts [GRB's]. However, the conviction that the universe is now all matter with no antimatter has left that possibility rejected and uninvestigated and left standing the massive supernovae core collapse hypothesis for GRB's. -It has recently been reported that the rate of GRB's increases with red shift z for z = 0 to 4 as (1 + z)^1.5. The indication is that the rate increases significantly with time into the past at least back to z = 4 [and probably back to the Big Bang]. -That finding is inconsistent with the massive supernovae core collapse hypothesis for GRB's and supports GRB's being cosmic matter/antimatter annihilations.

  6. Anatomy of symmetry energy of dilute nuclear matter

    E-Print Network [OSTI]

    J. N. De; S. K. Samaddar; B. K. Agrawal

    2010-09-23T23:59:59.000Z

    The symmetry energy coefficients of dilute clusterized nuclear matter are evaluated in the $S$-matrix framework. Employing a few different definitions commonly used in the literature for uniform nuclear matter, it is seen that the different definitions lead to perceptibly different results for the symmetry coefficients for dilute nuclear matter. They are found to be higher compared to those obtained for uniform matter in the low density domain. The calculated results are in reasonable consonance with those extracted recently from experimental data.

  7. Spatiotemporal Dynamics of Online Motor Correction Processing Revealed by High-density Electroencephalography

    E-Print Network [OSTI]

    Dipietro, Laura

    The ability to control online motor corrections is key to dealing with unexpected changes arising in the environment with which we interact. How the CNS controls online motor corrections is poorly understood, but evidence ...

  8. Vehicle Technologies Office Merit Review 2014: On-Line Weld NDE...

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

    On-Line Weld NDE with IR Thermography Vehicle Technologies Office Merit Review 2014: On-Line Weld NDE with IR Thermography Presentation given by Oak Ridge National Laboratory at...

  9. Assembling thefacebook: Using heterogeneity to understand online social network assembly

    E-Print Network [OSTI]

    Jacobs, Abigail Z; Ugander, Johan; Clauset, Aaron

    2015-01-01T23:59:59.000Z

    Online social networks represent a popular and highly diverse class of social media systems. Despite this variety, each of these systems undergoes a general process of online social network assembly, which represents the complicated and heterogeneous changes that transform newly born systems into mature platforms. However, little is known about this process. For example, how much of a network's assembly is driven by simple growth? How does a network's structure change as it matures? How does network structure vary with adoption rates and user heterogeneity, and do these properties play different roles at different points in the assembly? We investigate these and other questions using a unique dataset of online connections among the roughly one million users at the first 100 colleges admitted to Facebook, captured just 20 months after its launch. We first show that different vintages and adoption rates across this population of networks reveal temporal dynamics of the assembly process, and that assembly is onl...

  10. XAL-Based Applications and Online Models for LCLS

    SciTech Connect (OSTI)

    Chu, P.; Woodley, M.; Iverson, R.; Krejcik, P.; White, G.; Wu, J.; /SLAC; Gan, Q.; /Beijing, Inst. High Energy Phys.

    2009-12-11T23:59:59.000Z

    XAL, a high-level accelerator application framework originally developed at the Spallation Neutron Source (SNS), Oak Ridge National Laboratory, has been adopted by the Linac Coherent Light Source (LCLS) project. The work includes proper relational database schema modification to better suit XAL configuration data requirement, addition of new device types for LCLS online modeling purpose, longitudinal coordinate system change to better represent the LCLS electron beam rather than proton or ion beam in the original SNS XAL design, intensively benchmark with MAD and present SLC modeling system for the online model, and various new features to the XAL framework. Storing online model data in a relational database and providing universal access methods for other applications is also described here.

  11. Soft matter with soft particles Christos N. Likos

    E-Print Network [OSTI]

    Likos, Christos N.

    properties of concentrated solutions of two novel kinds of soft matter systems: star-shaped polymers of soft matter systems under external influences and promising perspectives for the fabrication of new Perhaps the most fascinating aspect of soft matter science lies in the fact that the physical systems

  12. Critical phenomena of asymmetric nuclear matter in the extended

    E-Print Network [OSTI]

    Critical phenomena of asymmetric nuclear matter in the extended Zimanyi-Moszkowski model K nuclear matter produced by heavy-ion reactions is isospin asymmetric. Although the critical exponents. Miyazaki Abstract We have studied the liquid-gas phase transition of warm asymmetric nuclear matter

  13. Adaptive Tuning of RED Using On-line Simulation Tao Ye, Shivkumar Kalyanaraman

    E-Print Network [OSTI]

    Kalyanaraman, Shivkumar

    on the proposed RED optimization scheme, a general automatic network management system, i.e., on-line simulation

  14. Online optimization of storage ring nonlinear beam dynamics

    E-Print Network [OSTI]

    Huang, Xiaobiao

    2015-01-01T23:59:59.000Z

    We propose to optimize the nonlinear beam dynamics of existing and future storage rings with direct online optimization techniques. This approach may have crucial importance for the implementation of diffraction limited storage rings. In this paper considerations and algorithms for the online optimization approach are discussed. We have applied this approach to experimentally improve the dynamic aperture of the SPEAR3 storage ring with the robust conjugate direction search method and the particle swarm optimization method. The dynamic aperture was improved by more than 5 mm within a short period of time. Experimental setup and results are presented.

  15. Online at the Energy Department | Department of Energy

    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 directed offOCHCO2:Introduction toManagementOPAM PolicyOfEnergy Online Classified orOnline

  16. arXiv:submit/0910499[stat.ML]11Feb2014 Online Nonparametric Regression

    E-Print Network [OSTI]

    Rakhlin, Alexander "Sasha"

    learning with squared loss and online nonparametric regression are the same. In addition to a non experts and for online linear regression. 1 Introduction Within the online regression framework, data (x1, starting with the paper of Foster [8], has been almost exclusively on finite-dimensional linear regression

  17. Dark Clouds on the Horizon: Using Cloud Storage as Attack Vector and Online Slack Space

    E-Print Network [OSTI]

    Dark Clouds on the Horizon: Using Cloud Storage as Attack Vector and Online Slack Space Martin this as online slack space. We conclude by discussing security improvements for mod- ern online storage services protocol. With the advent of cloud computing and the shared usage of resources, these centralized storage

  18. The Potential for Scholarly Online Books: Views from the Columbia University

    E-Print Network [OSTI]

    The Potential for Scholarly Online Books: Views from the Columbia University Online Books Evaluation Project* Mary Summerfield, Carol Mandel, and Paul Kantor The Columbia University Online Books Project, Columbia University: Final Report and many other reports and papers, including the re- search

  19. BASIC UNIX COMMANDS 2 man -Accessing On-Line Manual Pages 1

    E-Print Network [OSTI]

    BASIC UNIX COMMANDS Contents 1 Intro 1 2 man - Accessing On-Line Manual Pages 1 3 pwd - Print will be available from their on-line manual pages (accessed through the man command described below). Each command). Note that your prompt may be different. 2 man - Accessing On-Line Manual Pages The man command looks up

  20. Symmetry energy coefficients for asymmetric nuclear matter

    E-Print Network [OSTI]

    Fábio L. Braghin

    2003-12-16T23:59:59.000Z

    Symmetry energy coefficients of asymmetric nuclear matter are investigated as the inverse of nuclear matter polarizabilities with two different approaches. Firstly a general calculation shows they may depend on the neutron-proton asymmetry itself. The choice of particular prescriptions for the density fluctuations lead to certain isospin (n-p asymmetry) dependences of the polarizabilities. Secondly, with Skyrme type interactions, the static limit of the dynamical polarizability is investigated corresponding to the inverse symmetry energy coefficient which assumes different values at different asymmetries (and densities and temperatures). The symmetry energy coefficient (in the isovector channel) is found to increase as n-p asymmetries increase. The spin symmetry energy coefficient is also briefly investigated.

  1. Axion cold dark matter in nonstandard cosmologies

    SciTech Connect (OSTI)

    Visinelli, Luca; Gondolo, Paolo [Department of Physics and Astronomy, University of Utah, 115 South 1400 East 201, Salt Lake City, Utah 84112-0830 (United States)

    2010-03-15T23:59:59.000Z

    We study the parameter space of cold dark matter axions in two cosmological scenarios with nonstandard thermal histories before big bang nucleosynthesis: the low-temperature reheating (LTR) cosmology and the kination cosmology. If the Peccei-Quinn symmetry breaks during inflation, we find more allowed parameter space in the LTR cosmology than in the standard cosmology and less in the kination cosmology. On the contrary, if the Peccei-Quinn symmetry breaks after inflation, the Peccei-Quinn scale is orders of magnitude higher than standard in the LTR cosmology and lower in the kination cosmology. We show that the axion velocity dispersion may be used to distinguish some of these nonstandard cosmologies. Thus, axion cold dark matter may be a good probe of the history of the Universe before big bang nucleosynthesis.

  2. Dark matter through the axion portal

    SciTech Connect (OSTI)

    Nomura, Yasunori; Thaler, Jesse [Berkeley Center for Theoretical Physics, University of California, Berkeley, California 94720 (United States) and Theoretical Physics Group, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

    2009-04-01T23:59:59.000Z

    Motivated by the galactic positron excess seen by PAMELA and ATIC/PPB-BETS, we propose that dark matter is a TeV-scale particle that annihilates into a pseudoscalar 'axion'. The positron excess and the absence of an antiproton or gamma ray excess constrain the axion mass and branching ratios. In the simplest realization, the axion is associated with a Peccei-Quinn symmetry, in which case it has a mass around 360-800 MeV and decays into muons. We present a simple and predictive supersymmetric model implementing this scenario, where both the Higgsino and dark matter obtain masses from the same source of TeV-scale spontaneous symmetry breaking.

  3. Earth Matter Effect on Democratic Neutrinos

    E-Print Network [OSTI]

    Dmitry Zhuridov

    2014-08-30T23:59:59.000Z

    The neutrino propagation through the Earth is investigated in the framework of the democratic neutrino theory. In this theory the neutrino mixing angle theta-1-3 is approximately determined, which allows one to make a well defined neutrino oscillogram driven by the 1-3 mixing in the matter of the Earth. Significant differences in this oscillogram from the case of models with relatively small theta-1-3 are discussed.

  4. Energy Matters, September/October 1999

    SciTech Connect (OSTI)

    NONE

    1999-09-13T23:59:59.000Z

    Energy Matters is a quarterly newsletter to update partners on Motor Challenge progress. This issue includes these topics: small town plastics manufacturer produces big local energy and cost savings; technical advances improve industrial energy efficiency; energy service companies: cost-savings partners for industry; choosing the right energy service company to prove the value of motor upgrades projects; energy assets: tapping the hidden value; steam workshops promote energy efficiency; performance optimization tips.

  5. Radio signals of particle dark matter

    E-Print Network [OSTI]

    Marco Regis

    2011-12-08T23:59:59.000Z

    In most of particle dark matter (DM) models, the DM candidate injects sizable fluxes of high-energy electrons and positrons through its annihilations or decays. Emitted in regions with magnetic field, they in turn give raise to a synchrotron radiation, which typically covers radio and infrared bands. We discuss the possibility of detecting signatures of Galactic and extra-galactic DM in the total intensity and small-scale anisotropies of the radio background.

  6. Dark Matter Search with Moderately Superheated Liquids

    E-Print Network [OSTI]

    L. A. Hamel; L. Lessard; V. Zacek; Bhaskar Sur

    1996-02-14T23:59:59.000Z

    We suggest the use of moderately superheated liquids in the form of superheated droplet detectors for a new type of neutralino search experiment. The advantage of this method for Dark Matter detection is, that the detector material is cheap, readily available and that it is easily possible to fabricate a large mass detector. Moreover the detector can be made "background blind", i.e. exclusively sensitive to nuclear recoils.

  7. Shear viscosity of the quark matter

    E-Print Network [OSTI]

    Masaharu Iwasaki; Hiromasa Ohnishi; Takahiko Fukutome

    2007-05-14T23:59:59.000Z

    We discuss shear viscosity of the quark matter by using Kubo formula. The shear viscosity is calculated in the framework of the quasi-particle RPA for the Nambu-Jona-Lasinio model. We obtain a formula that the shear viscosity is expressed by the quadratic form of the quark spectral function in the chiral symmetric phase. The magnitude of the shear viscosity is discussed assuming the Breit-Wigner type for the spectral function.

  8. Quark Nuggets as Baryonic Dark Matter

    E-Print Network [OSTI]

    Jan-e Alam; Sibaji Raha; Bikash Sinha

    1997-04-23T23:59:59.000Z

    The cosmic first order phase transition from quarks to hadrons, occurring a few microseconds after the Big Bang, would lead to the formation of quark nuggets which would be stable on a cosmological time scale, if the associated baryon number is larger than a critical value. We examine the possibility that these surviving quark nuggets may not only be viable candidates for cold dark matter but even close the universe.

  9. The Surface Tension of Magnetized Quark Matter

    E-Print Network [OSTI]

    A. F. Garcia; M. B. Pinto

    2013-06-13T23:59:59.000Z

    The surface tension of quark matter plays a crucial role for the possibility of quark matter nucleation during the formation of compact stellar objects and also for the existence of a mixed phase within hybrid stars. However, despite its importance, this quantity does not have a well established numerical value. Some early estimates have predicted that, at zero temperature, the value falls within the wide range $\\gamma_0\\approx10-300{\\rm\\ MeV/fm^2}$ but, very recently, different model applications have reduced these numerical values to fall within the range $\\gamma_0\\approx5-30{\\rm\\ MeV/fm^2}$ which would favor the phase conversion process as well as the appearance of a mixed phase in hybrid stars. In magnetars one should also account for the presence of very high magnetic fields which may reach up to about $ eB\\approx 3-30\\, m_\\pi^2$ ($B \\approx 10^{19}-10^{20} \\,G$) at the core of the star so that it may also be important to analyze how the presence of a magnetic field affects the surface tension. With this aim we consider magnetized two flavor quark matter, described by the Nambu--Jona-Lasinio model. We show that although the surface tension oscillates around its B=0 value, when $0 surface tension value drops by about 30% while for $eB \\gtrsim 10\\, m_\\pi^2$ it quickly raises with the field intensity so that the phase conversion and the presence of a mixed phase should be suppressed if extremely high fields are present. We also investigate how thermal effects influence the surface tension for magnetized quark matter.

  10. Alternatives to Dark Matter and Dark Energy

    E-Print Network [OSTI]

    Mannheim, P D

    2006-01-01T23:59:59.000Z

    We review the underpinnings of the standard Newton-Einstein theory of gravity, and identify where it could possibly go wrong. In particular, we discuss the logical independence from each other of the general covariance principle, the equivalence principle and the Einstein equations, and discuss how to constrain the matter energy-momentum tensor which serves as the source of gravity. We identify the a priori assumption of the validity of standard gravity on all distance scales as the root cause of the dark matter and dark energy problems, and discuss how the freedom currently present in gravitational theory can enable us to construct candidate alternatives to the standard theory in which the dark matter and dark energy problems could then be resolved. We identify three generic aspects of these alternate approaches: that it is a universal acceleration scale which determines when a luminous Newtonian expectation is to fail to fit data, that there is a global cosmological effect on local galactic motions which ca...

  11. Halo Formation in Warm Dark Matter Models

    E-Print Network [OSTI]

    Paul Bode; Jeremiah P. Ostriker; Neil Turok

    2001-05-29T23:59:59.000Z

    Discrepancies have emerged between the predictions of standard cold dark matter (CDM) theory and observations of clustering on sub-galactic scales. Warm dark matter (WDM) is a simple modification of CDM in which the dark matter particles have initial velocities due either to their having decoupled as thermal relics, or having been formed via non-equilibrium decay. We investigate the nonlinear gravitational clustering of WDM with a high resolution N-body code, and identify a number of distinctive observational signatures. Relative to CDM, halo concentrations and core densities are lowered, core radii are increased, and large halos emerge with far fewer low mass satellites. The number of small halos is suppressed, and those present are formed by `top down' fragmentation of caustics, as part of a `cosmic web' connecting massive halos. Few small halos form outside this web. If we identify small halos with dwarf galaxies, their number, spatial distribution, and formation epoch appear in better agreement with the observations for WDM than they are for CDM.

  12. Dark matter ignition of type Ia supernovae

    E-Print Network [OSTI]

    Bramante, Joseph

    2015-01-01T23:59:59.000Z

    Recent studies of low redshift type Ia supernovae (SNIa) indicate that half explode from less than Chandrasekhar mass white dwarfs, implying ignition must proceed from something besides the canonical criticality of Chandrasekhar mass SNIa progenitors. We show that $0.1-10$ PeV mass asymmetric dark matter, with imminently detectable nucleon scattering interactions, can accumulate to the point of self-gravitation in a white dwarf and collapse, shedding gravitational potential energy by scattering off nuclei, thereby heating the white dwarf and igniting the flame front that precedes SNIa. We combine data on SNIa masses with data on the ages of SNIa-adjacent stars. This combination reveals a $ 3 \\sigma$ inverse correlation between SNIa masses and ignition ages, which could result from increased capture of dark matter in 1.4 versus 1.1 solar mass white dwarfs. Future studies of SNIa in galactic centers will provide additional tests of dark-matter-induced type Ia ignition. Remarkably, both bosonic and fermionic SNI...

  13. Dark matter monopoles, vectors and photons

    E-Print Network [OSTI]

    Valentin V. Khoze; Gunnar Ro

    2014-06-10T23:59:59.000Z

    In a secluded dark sector which is coupled to the Standard Model via a Higgs portal interaction we arrange for the existence of 't Hooft-Polyakov magnetic monopoles and study their implications for cosmology. We point out that a dark sector which can accommodate stable monopoles will also contain massless dark photons gamma' as well as charged massive vector bosons W'. The dark matter in this scenario will be a combination of magnetically and electrically charged species under the unbroken U(1) subgroup of the dark sector. We estimate the cosmological production rate of monopoles and the rate of monopole-anti-monopole annihilation and conclude that monopoles with masses of few hundred TeV or greater, can produce sizeable contributions to the observed dark matter relic density. We scan over the parameter space and compute the relic density for monopoles and vector bosons. Turning to the dark photon radiation, we compute their contribution to the measured density of relativistic particles Neff and also apply observational constraints from the Bullet cluster and other large scale galaxies on long-range interactions for the self-interacting dark matter components made out of monopoles and out of dark vector bosons. At scales relevant for dwarf galaxies we identify regions on the parameter space where self-interacting monopole and vector dark mater components can aid solving the core-cusp and the too-big-to-fail problems.

  14. Color superconducting quark matter in compact stars

    E-Print Network [OSTI]

    D. B. Blaschke; T. Klahn; F. Sandin

    2007-12-02T23:59:59.000Z

    Recent indications for high neutron star masses (M \\sim 2 M_sun) and large radii (R > 12 km) could rule out soft equations of state and have provoked a debate whether the occurence of quark matter in compact stars can be excluded as well. We show that modern quantum field theoretical approaches to quark matter including color superconductivity and a vector meanfield allow a microscopic description of hybrid stars which fulfill the new, strong constraints. For these objects color superconductivity turns out to be an essential ingredient for a successful description of the cooling phenomenology in accordance with recently developed tests. We discuss the energy release in the neutrino untrapping transition as a new aspect of the problem that hybrid stars masquerade themselves as neutron stars. Quark matter searches in future generations of low-temperature/high-density nucleus-nucleus collision experiments such as low-energy RHIC and CBM @ FAIR might face the same problem of an almost crossover behavior of the deconfinement transition. Therefore, diagnostic tools shall be derived from effects of color superconductivity.

  15. Dark Matter Balls Help Supernovae to Explode

    E-Print Network [OSTI]

    Froggatt, Colin D

    2015-01-01T23:59:59.000Z

    As a solution to the well-known problem that the shock wave potentially responsible for the explosion of a supernova actually tends to stall, we propose a new energy source arising from our model for dark matter. Our earlier model proposed that dark matter should consist of cm-large white dwarf-like objects kept together by a skin separating two different sorts of vacua. These dark matter balls or pearls will collect in the middle of any star throughout its lifetime. At some stage during the development of a supernova the balls will begin to take in neutrons and then other surrounding material. By passing into a ball nucleons fall through a potential of order 10 MeV, causing a severe production of heat - of order 10 foe for a solar mass of material eaten by the balls. The temperature in the iron core will thereby be raised, splitting up the iron into smaller nuclei. This provides a mechanism for reviving the shock wave when it arrives and making the supernova explosion really occur. The onset of the heating d...

  16. Phase separation and coarsening in active matter

    E-Print Network [OSTI]

    Giuseppe Gonnella; Davide Marenduzzo; Antonio Suma; Adriano Tiribocchi

    2015-02-08T23:59:59.000Z

    Active systems, or active matter, are self-driven systems which live, or function, far from equilibrium - a paradigmatic example which we focus on here is provided by a suspension of self-motile particles. Active systems are far from equilibrium because their microscopic constituents constantly consume energy from the environment in order to do work, for instance to propel themselves. The nonequilibrium nature of active matter leads to a variety of non-trivial intriguing phenomena. An important one which has recently been the subject of intense interest among biological and soft matter physicists is that of the so-called "motility-induced phase separation", whereby self-propelled particles accumulate into clusters in the absence of any explicit attractive interactions between them. Here we review the physics of motility-induced phase separation, and discuss this phenomenon within the framework of the classic physics of phase separation and coarsening. We also discuss cases where the coarsening may be arrested, either in theories for bacterial colonies or in experiments. Most of this work will focus on the case of run-and-tumble and active Brownian particles in the absence of solvent-mediated hydrodynamic interactions - we will briefly discuss at the end their role, which is not currently fully understood in this context.

  17. AMIDAS-II: Upgrade of the AMIDAS Package and Website for Direct Dark Matter Detection Experiments and Phenomenology

    E-Print Network [OSTI]

    Chung-Lin Shan

    2014-11-13T23:59:59.000Z

    In this paper, we give a detailed user's guide to the AMIDAS (A Model-Independent Data Analysis System) package and website, which is developed for online simulations and data analyses for direct Dark Matter detection experiments and phenomenology. Recently, the whole AMIDAS package and website system has been upgraded to the second phase: AMIDAS-II, for including the new developed Bayesian analysis technique. AMIDAS has the ability to do full Monte Carlo simulations as well as to analyze real/pseudo data sets either generated by another event generating programs or recorded in direct DM detection experiments. Moreover, the AMIDAS-II package can include several "user-defined" functions into the main code: the (fitting) one-dimensional WIMP velocity distribution function, the nuclear form factors for spin-independent and spin-dependent cross sections, artificial/experimental background spectrum for both of simulation and data analysis procedures, as well as different distribution functions needed in Bayesian analyses.

  18. Dissipative dark matter and the rotation curves of dwarf galaxies

    E-Print Network [OSTI]

    Foot, R

    2015-01-01T23:59:59.000Z

    There is ample evidence from rotation curves that dark matter halo's around disk galaxies have nontrivial dynamics. Of particular significance are: a) the cored dark matter profile of disk galaxies, b) correlations of the shape of rotation curves with baryonic properties, and c) the Tully-Fisher relation. Dark matter halo's around disk galaxies may have nontrivial dynamics if dark matter is strongly self interacting and dissipative. Multicomponent hidden sector dark matter featuring a massless `dark photon' (from an unbroken dark $U(1)$ gauge interaction) which kinetically mixes with the ordinary photon provides a concrete example of such dark matter. The kinetic mixing interaction facilitates halo heating by enabling ordinary supernovae to be a source of these `dark photons'. Dark matter halo's can expand and contract in response to the heating and cooling processes, but for a sufficiently isolated halo should have evolved to a steady state or `equilibrium' configuration where heating and cooling rates local...

  19. Dark matter, dark energy and gravitational proprieties of antimatter

    E-Print Network [OSTI]

    Dragan Slavkov Hajdukovic

    2009-10-21T23:59:59.000Z

    We suggest that the eventual gravitational repulsion between matter and antimatter may be a key for understanding of the nature of dark matter and dark energy. If there is gravitational repulsion, virtual particle-antiparticle pairs in the vacuum, may be considered as gravitational dipoles. We use a simple toy model to reveal a first indication that the gravitational polarization of such a vacuum, caused by baryonic matter in a Galaxy, may produce the same effect as supposed existence of dark matter. In addition, we argue that cancellation of gravitational charges in virtual particle-antiparticle pairs, may be a basis for a solution of the cosmological constant problem and identification of dark energy with vacuum energy. Hence, it may be that dark matter and dark energy are not new, unknown forms of matter-energy but an effect of complex interaction between quantum vacuum and known baryonic matter.

  20. Foundations of Computer Graphics Online Lecture 1: Overview and History

    E-Print Network [OSTI]

    California at Berkeley, University of

    Life) § Electronic publishing § Online gaming § 3D printers and fabrication Why Study 3D Computer study 3D Graphics? Ravi Ramamoorthi http://www.cs.berkeley.edu/~ravir Instructor Ravi Ramamoorthi http: Write complex 3D graphics programs (real-time scene viewer in OpenGL, offline raytracer) § Theory

  1. 2012 National Hurricane Preparedness Week Page 1 Online Resources

    E-Print Network [OSTI]

    2012 National Hurricane Preparedness Week Page 1 Online Resources 2012 NATIONAL HURRICANE Administration (NOAA) recommend using social media tools as a way to promote National Hurricane Preparedness Week, May 27 ­ June 2, and throughout hurricane season. You can promote hurricane preparedness through your

  2. Online Course Syllabus STATS 8: Introduction to Biological Statistics

    E-Print Network [OSTI]

    Loudon, Catherine

    Online Course Syllabus Page 1 STATS 8: Introduction to Biological Statistics Summer Session II 2011. Baldi is a lecturer at UC Irvine where she has been teaching statistics for many years. She is also involved in the development of educational material for statistics, from helping to conceive a TV program

  3. Pin-Count-Aware Online Testing of Digital Microfluidic Biochips

    E-Print Network [OSTI]

    Chakrabarty, Krishnendu

    Pin-Count-Aware Online Testing of Digital Microfluidic Biochips Yang Zhao and Krishnendu, and bioassay malfunctions in microfluidic biochips. To reduce product cost for disposable biochips, testing microfluidics is an emerging technology that pro- vides fluid-handling capability on a chip [1]. By reducing

  4. Stochastic Online Learning for Network Optimization under Unknown Random Weights

    E-Print Network [OSTI]

    Zhao, Qing

    the results to general network optimization problems (e.g., minimum spanning tree and dominating set minimum spanning tree and minimum (connected) dominating set. Consider a communication network where1 Stochastic Online Learning for Network Optimization under Unknown Random Weights Keqin Liu

  5. Online Learning for Combinatorial Network Optimization with Restless Markovian Rewards

    E-Print Network [OSTI]

    Krishnamachari, Bhaskar

    combinatorial optimization covers, for instance, shortest path and minimum spanning tree computation used, minimal spanning tree computation, maximum weighted matching on bipartite graphs, etc. We present CLRMR, the first online learning algorithm that efficiently solves the stochastic version of these problems where

  6. Print and online advertising in the Sun-Herald

    E-Print Network [OSTI]

    Peters, Richard

    Print and online advertising in the Sun-Herald Effective 1 August 2012 #12;Domain in The Sun* potential buyers and investors. Now with Packages, that include Saturday Domain, The Sun-Herald, Domain and Coast. Choose your Paper, Choose your Budget and Target your Buyers. Domain Sun-Herald Domain Sun

  7. The Key Coal Producers ONLINE SUPPORTING MATERIALS to

    E-Print Network [OSTI]

    Patzek, Tadeusz W.

    The Key Coal Producers ONLINE SUPPORTING MATERIALS to A Global Coal Production Forecast with Multi's most important coal-producing area is North-Central China. The provinces of Inner Mongolia, Ningxia, Shaanxi and Shanxi together accounted for 83 percent of China's proven coal reserves in 2000, and Shanxi

  8. Kalman filtering algorithm for on-line memory polynomial predistortion

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Kalman filtering algorithm for on-line memory polynomial predistortion Mourad Djamai 1 , Smail. Kalman filtering algorithm with sliding time-window is adapted to track the changes in the PA predistortion, Kalman Filtering, parameter estimation, adaptive control. I. INTRODUCTION Nonlinear system

  9. Visit us online for updates! www.eucenter.wisc.edu

    E-Print Network [OSTI]

    Scharer, John E.

    Visit us online for updates! www.eucenter.wisc.edu Events at a Glance European Union Center: EUCE 4.16.2013 4:00pm, Wisconsin Idea Room, 159 Education Building Wiemer Salverda, "Inequalities at UW-Madison) 4.18.2013 2:00pm,245 Education Building, 1000 Bascom Mall Jutta Allmendinger

  10. Online Mechanism Design for Electric Vehicle Charging Enrico H. Gerding

    E-Print Network [OSTI]

    Chen, Yiling

    Online Mechanism Design for Electric Vehicle Charging Enrico H. Gerding eg@ecs.soton.ac.uk Valentin electric vehicles are expected to place a consid- erable strain on local electricity distribution networks mechanisms are evaluated in depth, using data from a real-world trial of electric vehicles in the UK

  11. New Lower Bounds for Online k-Server Routing Problems

    E-Print Network [OSTI]

    Krumke, Sven O.

    New Lower Bounds for Online k-Server Routing Problems Irene Fink a Sven O. Krumke a Stephan, 67653 Kaiserslautern, Germany. {fink,krumke,westphal}@mathematik.uni-kl.de Abstract In a k-server routing problem k 1 servers move in a metric space in order to visit specified points or carry objects

  12. Enabling online geospatial isotopic model development and analysis

    E-Print Network [OSTI]

    Zhang, Tonglin

    Enabling online geospatial isotopic model development and analysis Hyojeong Lee1 , Lan Zhao1 leverages the computation resources available on the TeraGrid to perform geospatial data operations and geostatistical model calculations. It builds on a variety of open source technologies for GIS, geospatial data

  13. ACADEMIC INTEGRITY LIST OF ON-LINE RESOURCES

    E-Print Network [OSTI]

    Mease, Kenneth D.

    ACADEMIC INTEGRITY LIST OF ON-LINE RESOURCES Indiana University: How to Recognize Plagiarism http-making flowchart, and examples, as well as a 5-minute quiz on plagiarism. Georgetown University: What, with many real-life examples of situations that students face. American University: Academic Integrity http://www.american.edu/academics/integrity

  14. Scalable Misbehavior Detection in Online Video Chat Services

    E-Print Network [OSTI]

    Han, Richard Y.

    Institute of Technology, 2 University of Colorado - Boulder, 3 Ohio State University, 4 McGill University, 5 and higher accuracy. We demonstrate EMeralD's improvement via experimental evalua- tions on real-world data Issues­human safety, abuse and crime involving comput- ers Keywords Online video chat, misbehavior

  15. Online Support Information Spontaneous Phase Transformation and Exfoliation of

    E-Print Network [OSTI]

    Wang, Xudong

    Online Support Information Spontaneous Phase Transformation and Exfoliation of Rectangular Single-resolution TEM image (b) of exfoliated ZnO nanosheets. 4 #12;0 1.6 µm 20 - 10 - 0 - nm 4 nm 4 nm Figure S4. AFM topography image of an exfoliated ZnO nanosheet as thin as 4 nm. #12;

  16. Online Learning of Spacecraft Simulation Models Justin Thomas

    E-Print Network [OSTI]

    Eick, Christoph F.

    Online Learning of Spacecraft Simulation Models Justin Thomas United Space Alliance 600 Gemini to the dynamic and complex behav- ior of the International Space Station (ISS). To address this problem, this paper introduces a unique and efficient method for continuously learning highly accurate models from

  17. IEC Online GmbH International Education Centre

    E-Print Network [OSTI]

    Wolkenhauer, Olaf

    IEC Online GmbH International Education Centre Marienstraße 19/20, 10117 Berlin, Germany Tel. +49 B Geschäftsführerin: Hilka Leicht Seite 1/1 Berlin, 12. Februar 2013 IEC MURDOCH UNIVERSITY STIPENDIEN FÜR EIN AUSLANDSSEMESTER Studierende, die sich erfolgreich über IEC für ein Auslandssemester

  18. Autonomic Reactive Systems via Online Learning Sanjit A. Seshia

    E-Print Network [OSTI]

    California at Irvine, University of

    Autonomic Reactive Systems via Online Learning Sanjit A. Seshia Department of Electrical@eecs.berkeley.edu Abstract-- Reactive systems are those that maintain an ongoing interaction with their environment- covering a class of reactive systems from run-time failures. This class of systems comprises those whose

  19. Remote Health Monitoring Using Online Social Media Systems

    E-Print Network [OSTI]

    Bhatti, Saleem N.

    Remote Health Monitoring Using Online Social Media Systems Chonlatee Khorakhun University of St@cs.st-andrews.ac.uk Abstract--Remote monitoring is considered an essential part of future eHealth systems to enable the general requirements of a remote monitoring scenario and the process of building and using a Facebook

  20. Online Backchannel Synthesis Evaluation with the Switching Wizard of Oz

    E-Print Network [OSTI]

    Wieringa, Roel

    synthesis algorithm in an online conversation between a human speaker and a virtual listener. We adopt watches a virtual listener that is either controlled by a human listener or by an algorithm. The source-to-face dialog with a human speaker [1]. The quality of the behavior model should be measured by how the animated

  1. The Online Networking Phenomenon By: Dakotta J.K. Alex

    E-Print Network [OSTI]

    Kaminsky, Werner

    /NetRatings. The study showed that the top social networking sites had registered a growth rate of 47%. For more sites, you can visit: http://en.wikipedia.org/wiki/List_of_social_networking_websites So what is online networking can be divided into two broad categories ­ social and business or professional. Social networking

  2. Available online at www.sciencedirect.com ScienceDirect

    E-Print Network [OSTI]

    Wadley, Haydn

    focused on damage tolerant fiber reinforced ceramic matrix compos- ites (CMCs) with weak fiber/matrixAvailable online at www.sciencedirect.com ScienceDirect Journal of the European Ceramic Society 34,22,23 These considerations have stimulated the development of turbine components made from ceramic materials with much higher

  3. Automatic setup of recommended connections for online searching

    E-Print Network [OSTI]

    Painter, Kevin

    the recommended Connections. #12;Information Services 4 July 2013 7. Select a database to search and enter search terms in the search boxes 8. Select the number of results to retrieve The records will appear in EndnoteAutomatic setup of recommended connections for online searching EndNote X6 #12;Information Services

  4. The New Palgrave Dictionary of Economics Online extreme poverty

    E-Print Network [OSTI]

    The New Palgrave Dictionary of Economics Online extreme poverty Jeffrey D. Sachs and Gordon C. Mc://www.dictionaryofeconomics.com/article?id=pde2008_E000293 Abstract Households living in extreme poverty face deprivations that cost millions of lives annually. Ending extreme poverty requires an understanding of poverty traps, including the effects

  5. WEB SERVICES FOR THE MANAGEMENT OF PERSISTENT ONLINE GAME FACTIONS

    E-Print Network [OSTI]

    Libre de Bruxelles, Université

    WEB SERVICES FOR THE MANAGEMENT OF PERSISTENT ONLINE GAME FACTIONS Franc¸ois Deli`ege Aalborg groups, called factions, that are self-organized. The more members a faction has, the more complicated to manage it becomes. The goal of this work is to create an infrastructure to allow faction management tools

  6. CRWR Online Report 1006 Hydrologic Analysis Before and After

    E-Print Network [OSTI]

    Pasternack, Gregory B.

    as an integral part of the water management. As a result, the environmental condition in this reach has beenCRWR Online Report 1006 Hydrologic Analysis Before and After Reservoir Alteration Reservoir. Important habitats such as the Big Ben national and state park in the U.S. and Maderas del

  7. Adaptive Online Control of Cascading Blackouts Daniel Bienstock, Member, IEEE

    E-Print Network [OSTI]

    Bienstock, Daniel

    system faults, Power System Security, Robust control, Smart grids. I. INTRODUCTION CASCADING failures online control algorithms to be deployed in the event of a cascading power system failure. The control on robust controls, using models of line outages that explicitly account for noise. Computational experience

  8. Space and Movable Equipment On-line Inventory

    E-Print Network [OSTI]

    Hayden, Nancy J.

    Space and Movable Equipment On-line Inventory FY14 (July 2013 - June 2014) CAS ­ Cost Accounting and Michael Richards #12;Learning Objectives · Gain understanding of the Importance of Space & Equipment Inventory. · Understand the entire Inventory Process. · How to classify functional space. · How to inventory

  9. Synchronization of Turbo Codes Based on Online Statistics

    E-Print Network [OSTI]

    Valenti, Matthew C.

    Synchronization of Turbo Codes Based on Online Statistics Jian Sun and Matthew C. Valenti Wireless 26506-6109 email: [jian,mvalenti]@csee.wvu.edu, phone: 304-293-0405, fax: 304-293-8602 Abstract-- Turbo. Since turbo codes are intended to be deployed in environments with very low SNR, conventional

  10. Online $300 300 x 250 pixels ABOUT THE JOURNAL

    E-Print Network [OSTI]

    Mateo, Jill M.

    Online $300 300 x 250 pixels ABOUT THE JOURNAL The Journal of Modern History is recognized as the leading American journal for the study of European history. The Journal's expansive geographical. For more information contact: J-advertising@press.uchicago.edu Journal of Modern History The leading

  11. Online Mining of Data Streams: Problems, Applications and Progress

    E-Print Network [OSTI]

    Pei, Jian

    Online Mining of Data Streams: Problems, Applications and Progress Haixun Wang1 Jian Pei2 Philip S://www.cs.sfu.ca/~jpei #12;ICDE 2005 Tutorial 3 Outline · Introduction ­ Applications and Challenges · Mining data streams, Personal address book, Personal records, Payroll data bases, Expense reports, Logs of tunnel activities

  12. Classified Matter Protection and Control Manual

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2004-07-14T23:59:59.000Z

    This Manual supplements DOE O 471.2A, Information Security Program, dated 3-27-97, and provides detailed requirements for the protection and control of classified matter. Cancels DOE M 471.2-1B, dated 1-6-99, except Chapter III paragraphs 1 and 2 and Chapter IV. DOE M 471.2-1B Chapter IV was canceled by DOE O 471.4, Incidents of Security Concern, dated 3-17-04. Change 1, dated 7-14-2004, modifies requirements in Chapter II, paragraph 8c. Extended until 5-11-06 by DOE N 251.63, dated 5-11-05.

  13. Topological Matter, Integrable Models and Fusion Rings

    E-Print Network [OSTI]

    D. Nemeschansky; N. P. Warner

    1991-10-19T23:59:59.000Z

    We show how topological $G_k/G_k$ models can be embedded into the topological matter models that are obtained by perturbing the twisted $N=2$ supersymmetric, hermitian symmetric, coset models. In particular, this leads to an embedding of the fusion ring of $G$ as a sub-ring of the perturbed, chiral primary ring. The perturbation of the twisted $N=2$ model that leads to the fusion ring is also shown to lead to an integrable $N=2$ supersymmetric field theory when the untwisted $N=2$ superconformal field theory is perturbed by the same operator and its hermitian conjugate.

  14. Weak Lensing: Dark Matter, Dark Energy

    SciTech Connect (OSTI)

    Jain, Bhuvnesh (University of Pennsylvania) [University of Pennsylvania

    2006-02-27T23:59:59.000Z

    The light rays from distant galaxies are deflected by massive structures along the line of sight, causing the galaxy images to be distorted. Measurements of these distortions, known as weak lensing, provide a way of measuring the distribution of dark matter as well as the spatial geometry of the universe. I will describe the ideas underlying this approach to cosmology. With planned large imaging surveys, weak lensing is a powerful probe of dark energy. I will discuss the observational challenges ahead and recent progress in developing multiple, complementary approaches to lensing measurements.

  15. Bulk viscosity in kaon condensed matter

    E-Print Network [OSTI]

    Debarati Chatterjee; Debades Bandyopadhyay

    2007-05-30T23:59:59.000Z

    We investigate the effect of $K^-$ condensed matter on bulk viscosity and r-mode instability in neutron stars. The bulk viscosity coefficient due to the non-leptonic process $n \\rightleftharpoons p + K^-$ is studied here. In this connection, equations of state are constructed within the framework of relativistic field theoretical models where nucleon-nucleon and kaon-nucleon interactions are mediated by the exchange of scalar and vector mesons. We find that the bulk viscosity coefficient due to the non-leptonic weak process in the condensate is suppressed by several orders of magnitude. Consequently, kaon bulk viscosity may not damp the r-mode instability in neutron stars.

  16. Shear viscosity of $?$-stable nuclear matter

    E-Print Network [OSTI]

    Omar Benhar; Arianna Carbone

    2009-12-01T23:59:59.000Z

    Viscosity plays a critical role in determining the stability of rotating neutron stars. We report the results of a calculation of the shear viscosity of $\\beta$~-~stable matter, carried out using an effective interaction based on a state-of-the-art nucleon-nucleon potential and the formalism of correlated basis functions. Within our approach the equation of state, determining the proton fraction, and the nucleon-nucleon scattering probability are consistently obtained from the same dynamical model. The results show that, while the neutron contribution to the viscosity is always dominant, above nuclear saturation density the electron contribution becomes appreciable.

  17. Neutralino dark matter from heavy axino decay

    SciTech Connect (OSTI)

    Choi, Ki-Young [Departamento de Fisica Teorica C-XI, Universidad Autonoma de Madrid, Cantoblanco, 28049 Madrid (Spain); Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, Cantoblanco, 28049 Madrid (Spain); Kim, Jihn E. [Department of Physics and Astronomy, Seoul National University, Seoul 151-747 (Korea, Republic of); Lee, Hyun Min [Department of Physics, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213 (United States); Seto, Osamu [Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, Cantoblanco, 28049 Madrid (Spain)

    2008-06-15T23:59:59.000Z

    We consider cosmological consequences of a heavy axino, decaying to the neutralino in R-parity conserving models. The importance and influence of the axino decay on the resultant abundance of neutralino dark matter depends on the lifetime and the energy density of axino. For a high reheating temperature after inflation, copiously produced axinos dominate the energy density of the universe, and its decay produces a large amount of entropy. As a bonus, we obtain that the upper bound on the reheating temperature after inflation via gravitino decay can be moderated, because the entropy production by the axino decay more or less dilutes the gravitinos.

  18. Classified Matter Protection and Control Manual

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1999-01-06T23:59:59.000Z

    Provides detailed requirements for the protection and control of classified matter which supplement DOE O 471.2A. Extended until 5-11-06 by DOE N 251.63, dated 5-11-05. This manual has been canceled by DOE M 471.2-1C except Chapter III paragraphs 1 and 2, and Chapter IV. Chapter IV was canceled by DOE O 471.4, Incidents of Security Concern, dated 3/17/2004. Cancels DOE M 471.2-1A.

  19. Quark and Gluon Condensates in Isospin Matter

    E-Print Network [OSTI]

    Lianyi He; Yin Jiang; Pengfei Zhuang

    2009-05-03T23:59:59.000Z

    Applying the Hellmann-Feynman theorem to a charged pion gas, the quark and gluon condensates at low isospin density are determined by precise pion properties. At intermediate density around $ f_\\pi^2m_\\pi$, from both the estimation for the dilute pion gas and the calculation with Nambu--Jona-Lasinio model, the quark condensate is strongly and monotonously suppressed, while the gluon condensate is enhanced and can be larger than its vacuum value. This unusual behavior of the gluon condensate is universal for Bose condensed matter of mesons. Our results can be tested by lattice calculations at finite isospin density.

  20. Ultrafast Spectroscopy of Warm Dense Matter

    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 OurThe Iron Spin TransitionProgram |FrankUltrafast Spectroscopy of Warm Dense Matter

  1. Policy Matters Ohio | 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 Reduce Emissions fromMatters Ohio Jump

  2. Exploring the Nature of Matter | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist. Category UC-l 1,EnergyExploring the Nature of Matter November 3,

  3. ALS Reveals New State of Matter

    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 for4,645 3,625 1,006 492 742EnergyOnItemResearch >InternshipDepartmentNeutrino-Induced1ALSALS Reveals New State of Matter

  4. Quantum Condensed Matter | More Science | ORNL

    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's Possible forPortsmouth/Paducah47,193.70COMMUNITY AEROSOL:Quantum Condensed Matter SHARE Quantum

  5. Quantum Condensed Matter | Neutron Science | ORNL

    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's Possible forPortsmouth/Paducah47,193.70COMMUNITY AEROSOL:Quantum Condensed Matter SHARE

  6. Indirect Dark Matter search with large neutrino telescopes

    E-Print Network [OSTI]

    Fermani, Paolo

    2013-01-01T23:59:59.000Z

    Dark matter is one of the main goals of neutrino astronomy. At present, there are two big neutrino telescopes based on the Cherenkov technique in ice and water: IceCube at the South Pole and ANTARES in the northern hemisphere. Both telescopes are performing an indirect search for Dark Matter by looking for a statistical excess of neutrinos coming from astrophysical massive objects. This excess could be an evidence of the possible annihilation of dark matter particles in the centre of these objects. In one of the most popular scenarios the Dark Matter is composed of WIMP particles. The analysis and results of the ANTARES neutrino telescope for the indirect detection of Dark Matter fluxes from the Sun are here presented, as well as the latest IceCube published sensitivity results, for different Dark Matter models.

  7. Test of the equivalence principle for ordinary matter falling toward dark matter

    SciTech Connect (OSTI)

    Smith, G.; Adelberger, E.G.; Heckel, B.R.; Su, Y. (Department of Physics FM-15, University of Washington, Seattle, Washington 98195 (United States))

    1993-01-11T23:59:59.000Z

    We tested the equivalence principle (EP) for Be, Cu, and Al falling toward the galactic center, and found [Delta][ital a](Be,Cu)=[minus](0.1 [plus minus]5.8)[times]10[sup [minus]12] cm/[ital s][sup 2] and [Delta][ital a](Be,Al)=(3.6[plus minus]6.9)[times]10[sup [minus]12] cm/[ital s][sup 2]. As dark matter is thought to account for (25--30)% of our galacticentric acceleration, the EP parameters for Be/Cu, or Be/Al, falling toward dark matter, are [eta](Be,Cu)=(0.0[plus minus]1.2)[times]10[sup [minus]3] and [eta](Be,Al)=(0.7[plus minus]1.4)[times]10[sup [minus]3] (1[sigma] errors). This limits any EP-violating component of our acceleration toward dark matter and provides laboratory evidence that gravitation is the only significant long-range interaction between dark and ordinary matter.

  8. Discrimination of dark matter models in future experiments

    E-Print Network [OSTI]

    Tomohiro Abe; Ryuichiro Kitano; Ryosuke Sato

    2014-11-06T23:59:59.000Z

    Phenomenological aspects of simple dark matter models are studied. We discuss ways to discriminate the dark matter models in future experiments. We find that the measurements of the branching fraction of the Higgs boson into two photons and the electric dipole moment of the electron as well as the direct detection experiments are quite useful in discriminating particle models of dark matter. We also discuss the prospects of finding new particles in dark sector at the LHC/ILC.

  9. Dark Matter Annihilations in the Large Magellanic Cloud

    E-Print Network [OSTI]

    P Gondolo

    1993-12-06T23:59:59.000Z

    The flat rotation curve obtained for the outer star clusters of the Large Magellanic Cloud is suggestive of an LMC dark matter halo. From the composite HI and star cluster rotation curve, I estimate the parameters of an isothermal dark matter halo added to a `maximum disk.' I then examine the possibility of detecting high energy gamma-rays from non-baryonic dark matter annihilations in the central region of the Large Magellanic Cloud.

  10. Nuclear stopping power in warm and hot dense matter

    SciTech Connect (OSTI)

    Faussurier, Gerald; Blancard, Christophe [CEA, DAM, DIF, F-91 297 Arpajon (France); Gauthier, Maxence [CEA, DAM, DIF, F-91 297 Arpajon (France); LULI, Ecole Polytechnique, CNRS, CEA, UPMC, Route de Saclay, 91128 Palaiseau (France)

    2013-01-15T23:59:59.000Z

    We present a method to estimate the nuclear component of the stopping power of ions propagating in dense matter. Three kinds of effective pair potentials are proposed. Results from the warm dense matter regime and the domain of high energy density physics are presented and discussed for proton and helium. The role of ionic temperature is examined. The nuclear stopping power can play a noticeable role in hot dense matter.

  11. From dark matter to neutrinoless double beta decay

    E-Print Network [OSTI]

    Pei-Hong Gu

    2012-09-13T23:59:59.000Z

    Associated with two TeV-scale leptoquark scalars, a dark matter fermion which is the neutral component of an isotriplet can mediate a testable neutrinoless double beta decay at one-loop level. The dark matter fermion with determined mass and spin-independent scattering can be verified by the future dark matter direct detection experiments. We also discuss the implications on neutrino masses and baryon asymmetry.

  12. Strangeness, Cosmological Cold Dark Matter and Dark Energy

    E-Print Network [OSTI]

    Sibaji Raha; Shibaji Banerjee; Abhijit Bhattacharyya; Sanjay K. Ghosh; Ernst-Michael Ilgenfritz; Bikash Sinha; Eiichi Takasugi; Hiroshi Toki

    2005-01-18T23:59:59.000Z

    It is now believed that the universe is composed of a small amount of the normal luminous matter, a substantial amount of matter (Cold Dark Matter: CDM) which is non-luminous and a large amount of smooth energy (Dark Energy: DE). Both CDM and DE seem to require ideas beyond the standard model of particle interactions. In this work, we argue that CDM and DE can arise entirely from the standard principles of strong interaction physics out of the same mechanism.

  13. Plasmon excitations in homogeneous neutron star matter

    E-Print Network [OSTI]

    Marcello Baldo; Camille Ducoin

    2009-07-01T23:59:59.000Z

    We study the possible collective plasma modes which can affect neutron-star thermodynamics and different elementary processes in the baryonic density range between nuclear saturation ($\\rho_0$) and $3\\rho_0$. In this region, the expected constituents of neutron-star matter are mainly neutrons, protons, electrons and muons ($npe\\mu$ matter), under the constraint of beta equilibrium. The elementary plasma excitations of the $pe\\mu$ three-fluid medium are studied in the RPA framework. We emphasize the relevance of the Coulomb interaction among the three species, in particular the interplay of the electron and muon screening in suppressing the possible proton plasma mode, which is converted into a sound-like mode. The Coulomb interaction alone is able to produce a variety of excitation branches and the full spectral function shows a rich structure at different energy. The genuine plasmon mode is pushed at high energy and it contains mainly an electron component with a substantial muon component, which increases with density. The plasmon is undamped for not too large momentum and is expected to be hardly affected by the nuclear interaction. All the other branches, which fall below the plasmon, are damped or over-damped.

  14. ANTENNA-COUPLED LIGHT-MATTER INTERACTIONS

    SciTech Connect (OSTI)

    NOVOTNY, LUKAS

    2014-01-10T23:59:59.000Z

    This project is focused on antenna-coupled photon emission from single quantum emitters. The properties of optical antennas are tailored to control different photophysical parameters, such as the excited state lifetime, the saturation intensity, and the quantum yield [3]. Using a single molecule coupled to an optical antenna whose position and properties can be controllably adjusted we established a detailed and quantitative understanding of light-matter interactions in nanoscale environments. We have studied various quantum emitters: single molecules [11], quantum dots [7], rareearth ions [2], and NV centers in diamond [19]. We have systematically studied the interaction of these emitters with optical antennas. The overall objective was to establish a high-level of control over the light-matter interaction. In order to eliminate the coupling to the environment, we have taken a step further and explored the possibility of levitating the quantum emitter in high vacuum. What started as a side-project soon became a main activity in our research program and led us to the demonstration of vacuum trapping and cooling of a nanoscale particle [14].

  15. Quark Matter, Massive Stars and Strange Planets

    E-Print Network [OSTI]

    F. Weber; Ch. Schaab; M. K. Weigel; N. K. Glendenning

    1996-04-09T23:59:59.000Z

    This paper gives an overview of the properties of all possible equilibrium sequences of compact strange-matter stars with nuclear crusts, which range from strange stars to strange dwarfs. In contrast to their non-strange counterparts, --neutron stars and white dwarfs--, their properties are determined by two (rather than one) parameters, the central star density and the density at the base of the nuclear crust. This leads to stellar strange-matter configurations whose properties are much more complex than those of the conventional sequence. As an example, two generically different categories of stable strange dwarfs are found, which could be the observed white dwarfs. Furthermore we find very low-mass strange stellar objects, with masses as small as those of Jupiter or even lighter planets. Such objects, if abundant enough in our Galaxy, should be seen by the presently performed gravitational microlensing searches. Further aspects studied in this paper concern the limiting rotational periods and the cooling behavior of neutron stars and their strange counterparts.

  16. The rigidity of three flavor quark matter

    SciTech Connect (OSTI)

    Sharma, Rishi [Los Alamos National Laboratory; Mannarelli, Massimo [IEEC/CSIC

    2008-01-01T23:59:59.000Z

    Cold three flavor quark matter at large (but not asymptotically large) densities may exist in a crystalline color superconducting phase. These phases are characterized by a gap parameter {Delta} that varies periodieally in space, forming a crystal structure. A Ginzburg-Landau expansion in {Delta} shows that two crystal structures based on cubic symetry are particularly favorable, and may be the ground state of matter at densities present in neutron star cores. We derive the effective action for the phonon fields that describe space-and time-dependent fluctuations of the crystal structure formed by {Delta}, and obtain the shear modulus from the coefficients of the spatial derivative terms. Within a Ginzburg-Landau approximation, we find shear moduli which are 20 to 1000 times larger than those of neutron star crusts. This phase ofmatter is thus more rigid than any known material in the universe, but at the same time the crystalline color superconducting phase is also superftuid. These properties raise the possibility that the presence of this phase within neutron stars may have distinct implications for their phenomenology. For example, (some) pulsar glitches may originate in crystalline superconducting neutron star cores.

  17. Isobaric incompressibility of isospin asymmetric nuclear matter

    SciTech Connect (OSTI)

    Basu, D. N. [Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700 064 (India); Chowdhury, P. Roy [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700 064 (India); Samanta, C. [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700 064 (India); Physics Department, Virginia Commonwealth University, Richmond, Virginia 23284-2000 (United States); Physics Department, University of Richmond, Richmond, Virginia 23173 (United States)

    2009-11-15T23:59:59.000Z

    The isospin dependence of the saturation properties of asymmetric nuclear matter, particularly the incompressibility K{sub {infinity}}(X)=K{sub {infinity}}+K{sub {tau}}X{sup 2}+O(X{sup 4}) at saturation density, is systematically studied using density-dependent M3Y interaction. K{sub {tau}} characterizes the isospin dependence of the incompressibility at saturation density {rho}{sub 0}. The approximate expression K{sub asy}{approx_equal}K{sub sym}-6L is often used for K{sub {tau}} where L and K{sub sym} represent the slope and curvature parameters of the symmetry energy at {rho}{sub 0}, respectively. It can be expressed accurately as K{sub {tau}}=K{sub sym}-6L-(Q{sub 0}/K{sub {infinity}})L, where Q{sub 0} is the third-order-derivative parameter of symmetric nuclear matter at {rho}{sub 0}. The results of this addendum to [Phys. Rev. C 80, 011305(R) (2009)] indicate that the Q{sub 0} contribution to K{sub {tau}} is not insignificant.

  18. Axion hot dark matter bounds after Planck

    SciTech Connect (OSTI)

    Archidiacono, Maria; Hannestad, Steen [Department of Physics and Astronomy, University of Aarhus DK-8000 Aarhus C (Denmark); Mirizzi, Alessandro [II. Institut für Theoretische Physik, Universität Hamburg Luruper Chaussee 149, D-22761 Hamburg (Germany); Raffelt, Georg [Max-Planck-Institut für Physik (Werner-Heisenberg-Institut) Föhringer Ring 6, D-80805 München (Germany); Wong, Yvonne Y.Y., E-mail: archi@phys.au.dk, E-mail: sth@phys.au.dk, E-mail: alessandro.mirizzi@desy.de, E-mail: raffelt@mpp.mpg.de, E-mail: yvonne.y.wong@unsw.edu.au [School of Physics, The University of New South Wales Sydney NSW 2052 (Australia)

    2013-10-01T23:59:59.000Z

    We use cosmological observations in the post-Planck era to derive limits on thermally produced cosmological axions. In the early universe such axions contribute to the radiation density and later to the hot dark matter fraction. We find an upper limit m{sub a} < 0.67 eV at 95% C.L. after marginalising over the unknown neutrino masses, using CMB temperature and polarisation data from Planck and WMAP respectively, the halo matter power spectrum extracted from SDSS-DR7, and the local Hubble expansion rate H{sub 0} released by the Carnegie Hubble Program based on a recalibration of the Hubble Space Telescope Key Project sample. Leaving out the local H{sub 0} measurement relaxes the limit somewhat to 0.86 eV, while Planck+WMAP alone constrain the axion mass to 1.01 eV, the first time an upper limit on m{sub a} has been obtained from CMB data alone. Our axion limit is therefore not very sensitive to the tension between the Planck-inferred H{sub 0} and the locally measured value. This is in contrast with the upper limit on the neutrino mass sum, which we find here to range from ? m{sub ?} < 0.27 eV at 95% C.L. combining all of the aforementioned observations, to 0.84 eV from CMB data alone.

  19. Phenomenology of Dirac Neutralino Dark Matter

    SciTech Connect (OSTI)

    Buckley, Matthew R.; Hooper, Dan; Kumar, Jason

    2013-09-01T23:59:59.000Z

    In supersymmetric models with an unbroken R-symmetry (rather than only R-parity), the neutralinos are Dirac fermions rather than Majorana. In this article, we discuss the phenomenology of neutralino dark matter in such models, including the calculation of the thermal relic abundance, and constraints and prospects for direct and indirect searches. Due to the large elastic scattering cross sections with nuclei predicted in R-symmetric models, we are forced to consider a neutralino that is predominantly bino, with very little higgsino mixing. We find a large region of parameter space in which bino-like Dirac neutralinos with masses between 10 and 380 GeV can annihilate through slepton exchange to provide a thermal relic abundance in agreement with the observed cosmological density, without relying on coannihilations or resonant annihilations. The signatures for the indirect detection of Dirac neutralinos are very different than predicted in the Majorana case, with annihilations proceeding dominately to $\\tau^+ \\tau^-$, $\\mu^+ \\mu^-$ and $e^+ e^-$ final states, without the standard chirality suppression. And unlike Majorana dark matter candidates, Dirac neutralinos experience spin-independent scattering with nuclei through vector couplings (via $Z$ and squark exchange), leading to potentially large rates at direct detection experiments. These and other characteristics make Dirac neutralinos potentially interesting within the context of recent direct and indirect detection anomalies. We also discuss the case in which the introduction of a small Majorana mass term breaks the $R$-symmetry, splitting the Dirac neutralino into a pair of nearly degenerate Majorana states.

  20. Bottom-strange mesons in hyperonic matter

    E-Print Network [OSTI]

    Divakar Pathak; Amruta Mishra

    2014-09-22T23:59:59.000Z

    The in-medium behavior of bottom-strange pseudoscalar mesons in hot, isospin asymmetric and dense hadronic environment is studied using a chiral effective model. The same was recently generalized to the heavy quark sector and employed to study the behavior of open-charm and open-bottom mesons. The heavy quark (anti-quark) is treated as frozen and all medium modifications of these bottom-strange mesons are due to their strange anti-quark (quark) content. We observe a pronounced dependence of their medium mass on baryonic density and strangeness content of the medium. Certain aspects of these in-medium interactions are similar to those observed for the strange-charmed mesons in a preceding investigation, such as the lifting of mass-degeneracy of $B_S^0$ and ${\\bar B}_S^0$ mesons in hyperonic matter, while the same is respected in vacuum as well as in nuclear matter. In general, however, there is a remarkable distinction between the two species, even though the formalism predicts a completely analogous in-medium interaction Lagrangian density. We discuss in detail the reason for different in-medium behavior of these bottom-strange mesons as compared to charmed-strange mesons, despite the dynamics of the heavy quark being treated as frozen in both cases.

  1. Diesner, J. (chair), Gadeib, A., Lttschwager, F., SassinotUny, L. (2009). Roundtable: Data Collection online: Can do, must (not) do, Should do. General Online Research (GOR)

    E-Print Network [OSTI]

    Sadeh, Norman M.

    2009-01-01T23:59:59.000Z

    online sources is available at low cost and large scale. This applies to surveys, interviews aspects of the internet, respective regulations for data collection, storage, exchange, mining. She will address issues regarding the maintenance of online access panels with regards to privacy

  2. Online Training Now Available -We are proud to offer EPA Accredited Lead-Safe Work Practices training online, which can take the place of the 6 hour classroom

    E-Print Network [OSTI]

    Tennessee, University of

    Online Training Now Available - We are proud to offer EPA Accredited Lead-Safe Work Practices training online, which can take the place of the 6 hour classroom instruction for the Lead RRP certification. Please note that a two hour hands-on training session is still required before you can obtain

  3. Espao e Economia [Online], 3 | 2013, posto online no dia 19 Dezembro 2013. URL : http://espacoeconomia.revues.org/513 ; DOI : 10.4000/espacoeconomia.513 Page 1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Espaço e Economia [Online], 3 | 2013, posto online no dia 19 Dezembro 2013. URL : http,version1-20Dec2013 Author manuscript, published in "Espaço e Economia, Revista Brasileira de Geografia Econômica (2013) espacoeconomia.revues. org/513" DOI : 10.4000/espacoeconomia.513 #12;Espaço e Economia

  4. Fuel-Neutral Studies of Particulate Matter Transport Emissions...

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

    Technologies Program Annual Merit Review and Peer Evaluation ace056stewart2011o.pdf More Documents & Publications Fuel-Neutral Studies of Particulate Matter Transport Emissions...

  5. STATE OF NEW MEXICO EIYVIRONMENT DEPARTMENT IN THE MATTER OF...

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

    MEXICO EIYVIRONMENT DEPARTMENT IN THE MATTER OF': TJNITED STATES DEPARTMENT OF ENERGY AND NUCLEAR WASTE PARTNERSHIP LLC ADMINISTRATIVE ORDER UNDER THE NEW MEXICO HAZARDOUS WASTD...

  6. Quark-Gluon Plasma: a New State of Matter

    ScienceCinema (OSTI)

    Brookhaven Lab

    2010-01-08T23:59:59.000Z

    Physicist Peter Steinberg explains the nature of the quark gluon plasma (QGP), a new state of matter produced at Brookhaven Lab's Relativistic Heavy Ion Collider (RHIC).

  7. Speculations on a Unified Theory of Matter and Mind

    E-Print Network [OSTI]

    Manoj K. Samal

    2001-11-08T23:59:59.000Z

    Physics is so successful today in understanding the nature of matter. What can it say about mind ? Is it possible to have a unified theory of matter and mind within the framework of modern science ? Is Consciousness an accident or is it a natural consequence of laws of nature ? Are these laws of nature the same as the laws of physics ? We make an attempt here to unify mind with matter based on an extended formalism borrowed from Quantum theory where information plays a more fundamental role than matter or thought.

  8. TSO-1002 - In the Matter of Personnel Security Hearing | Department...

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

    the Matter of Personnel Security Hearing The individual held a security clearance from 1990 until 2002 while working for government contractors and the federal government. In...

  9. Direct and indirect detection of dissipative dark matter

    E-Print Network [OSTI]

    JiJi Fan; Andrey Katz; Jessie Shelton

    2014-07-02T23:59:59.000Z

    We study the constraints from direct detection and solar capture on dark matter scenarios with a subdominant dissipative component. This dissipative dark matter component in general has both a symmetric and asymmetric relic abundance. Dissipative dynamics allow this subdominant dark matter component to cool, resulting in its partial or total collapse into a smaller volume inside the halo (e.g., a dark disk) as well as a reduced thermal velocity dispersion compared to that of normal cold dark matter. We first show that these features considerably relax the limits from direct detection experiments on the couplings between standard model (SM) particles and dissipative dark matter. On the other hand, indirect detection of the annihilation of the symmetric dissipative dark matter component inside the Sun sets stringent and robust constraints on the properties of the dissipative dark matter. In particular, IceCube observations force dissipative dark matter particles with mass above 50 GeV to either have a small coupling to the SM or a low local density in the solar system, or to have a nearly asymmetric relic abundance. Possible helioseismology signals associated with purely asymmetric dissipative dark matter are discussed, with no present constraints.

  10. Quality colonoscopy: A matter of time, technique or technology?

    E-Print Network [OSTI]

    Lee, Robert H

    2013-01-01T23:59:59.000Z

    reserved. FIELD OF VISION Quality colonoscopy: A matter ofrate is a val- id quality measure for colonoscopy: resultspact of videorecording on the quality of colonoscopy perfor-

  11. The Power of Efficiency: Why Momentum Savings Really Do Matter

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

    Efficiency: Why Momentum Savings Really Do Matter It's easy to dismiss Momentum Savings. After all, they can be difficult to understand and quantify in comparison to the direct...

  12. Neutron Scattering: Condensed Matter and Magnetic Science, MPA...

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

    Neutron Scattering Neutron Scattering Capability description: Neutron scattering is a powerful probe of structure and collective modes of condensed matter. We are focused on direct...

  13. Neutrinoless double beta decay can constrain neutrino dark matter

    E-Print Network [OSTI]

    V. Barger; S. L. Glashow; D. Marfatia; K. Whisnant

    2002-02-26T23:59:59.000Z

    We examine how constraints can be placed on the neutrino component of dark matter by an accurate measurement of neutrinoless double beta ($0\

  14. Nucleon sigma term and quark condensate in nuclear matter

    SciTech Connect (OSTI)

    K. Tsushima; K. Saito; A. W. Thomas; A. Valcarce

    2007-03-01T23:59:59.000Z

    We study the bound nucleon sigma term and its effect on the quark condensate in nuclear matter. In the quark-meson coupling (QMC) model it is shown that the nuclear correction to the sigma term is small and negative. Thus, the correction decelerates the decrease of the quark condensate in nuclear matter. However, the quark condensate in nuclear matter is controlled primarily by the scalar-isoscalar sigma field of the model. It appreciably moderates the decrease relative to the leading term at densities around and larger than the normal nuclear matter density.

  15. Which Models Matter: Uncertainty and Sensitivity Analysis for

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

    Models Matter: Uncertainty and Sensitivity Analysis for Photovoltaic Power Systems Clifford W. Hansen and Andrew Pohl Sandia National Laboratories, Albuquerque, NM, 87185-1033, USA...

  16. air particulate matter: Topics by E-print Network

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

    WetLabs, personal communication. There is variability in composition of particulate matter through the water column, so different correlations of PMbb or POCbb may exist in...

  17. appearing white matter: Topics by E-print Network

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

    model of cortical computation: CAM 12 Ballard, Dana H. 3 Is Galactic Dark Matter White ? Astrophysics (arXiv) Summary: We calculate the expected white dwarf luminosity...

  18. altered white matter: Topics by E-print Network

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

    model of cortical computation: CAM 12 Ballard, Dana H. 3 Is Galactic Dark Matter White ? Astrophysics (arXiv) Summary: We calculate the expected white dwarf luminosity...

  19. abnormal grey matter: Topics by E-print Network

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

    ... Christodoulou, Joanna 13 Toward a Unified Description of Dark Energy and Dark Matter from the Abnormally Weighting Energy Hypothesis Astrophysics (arXiv) Summary: The...

  20. affect organic matter: Topics by E-print Network

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

    Index 1 Steam treatment of surface soil: how does it affect water-soluble organic matter, C mineralization, and bacterial community composition? University of California...

  1. airborne particulate matter: Topics by E-print Network

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

    WetLabs, personal communication. There is variability in composition of particulate matter through the water column, so different correlations of PMbb or POCbb may exist in...

  2. ambient particulate matter: Topics by E-print Network

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

    WetLabs, personal communication. There is variability in composition of particulate matter through the water column, so different correlations of PMbb or POCbb may exist in...

  3. attenuate white matter: Topics by E-print Network

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

    model of cortical computation: CAM 12 Ballard, Dana H. 2 Is Galactic Dark Matter White ? Astrophysics (arXiv) Summary: We calculate the expected white dwarf luminosity...

  4. On the Nature of Dark Matter and Dark Energy

    E-Print Network [OSTI]

    Yu. A. Baurov; I. F. Malov

    2007-10-16T23:59:59.000Z

    It is shown that some problems connected with dark matter and dark energy can be solved in the framework of the byuon theory

  5. asymmetric dark matter: Topics by E-print Network

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

    the baryon asymmetry as a way to address the observed similarity between the baryonic and dark matter energy densities today. Focusing on this framework we calculate the evolution...

  6. atmospheric organic matter: Topics by E-print Network

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

    Theses and Dissertations Summary: ??Dissolved natural organic matter (NOM) and heavy metals are ubiquitous in aqueous and terrestrial systems. Adsorption processes involving...

  7. anisotropic quark matter: Topics by E-print Network

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

    Sunzu, Jefta M; Ray, Subharthi 2014-01-01 3 Anisotropic admixture in color-superconducting quark matter Nuclear Theory (arXiv) Summary: The analysis of...

  8. Control of Light-matter Interaction Using Dispersion Engineered...

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

    and non-classical light sources using quantum dots, metamaterials for controlling light-matter interaction, and engineered nonlinear optical materials using hybrid nanocomposites...

  9. Recent Progress on Steam Hydrogasification of Carbonaceous Matter...

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

    Progress on Steam Hydrogasification of Carbonaceous Matter to Clean Synthetic Diesel Fuel Surinder P. Singh, Arun Raju, Chan Seung Park, Joe Norbeck University of California,...

  10. Astrophysical search strategies for accelerator blind dark matter

    E-Print Network [OSTI]

    James D. Wells

    1998-08-06T23:59:59.000Z

    A weakly interacting dark-matter particle may be difficult to discover at an accelerator because it either (1) is too massive, (2) has no standard-model gauge interactions, or (3) is almost degenerate with other states. In each of these cases, searches for annihilation products in the Galactic halo are useful probes of dark-matter properties. Using the example of supersymmetric dark matter, I discuss how astrophysical searches for dark matter may provide discovery and mass information inaccessible to collider physics programs such as the Tevatron and LHC.

  11. The nested assembly of collective attention in online social systems

    E-Print Network [OSTI]

    Borge-Holthoefer, Javier; Gracia-Lázaro, Carlos; Moreno, Yamir

    2015-01-01T23:59:59.000Z

    Online social networks have changed the way in which we communicate. These networks are characterized by a competitive information flow and a dynamic topology, where the success of a given topic or meme depends on many factors, most of which are unknown. Likely, given the many sources of information to which a typical individual is exposed, the economy of attention rules the system dynamics. Here we show, using microblogging data, that competition is minimized through consensus and that collective attention and successful topical assembly are characterized by a nested structure of the bipartite network made up by users and memes. Our results indicate that social phenomena could emerge as a result of a topological transition that minimizes modularity while maximizing the nestedness of the system, and that online social networks are comparable to an ecosystem, where generalists and specialists share resources.

  12. RHIC injector complex online model status and plans

    SciTech Connect (OSTI)

    Schoefer,V.; Ahrens, L.; Brown, K.; Morris, J.; Nemesure, S.

    2009-05-04T23:59:59.000Z

    An online modeling system is being developed for the RHIC injector complex, which consists of the Booster, the AGS and the transfer lines connecting the Booster to the AGS and the AGS to RHIC. Historically the injectors have been operated using static values from design specifications or offline model runs, but tighter beam optics constraints required by polarized proton operations (e.g, accelerating with near-integer tunes) have necessitated a more dynamic system. An online model server for the AGS has been implemented using MAD-X [1] as the model engine, with plans to extend the system to the Booster and the injector transfer lines and to add the option of calculating optics using the Polymorphic Tracking Code (PTC [2]) as the model engine.

  13. The price of commitment in online stochastic vehicle routing

    SciTech Connect (OSTI)

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

    2009-01-01T23:59:59.000Z

    This paper considers online stochastic multiple vehicle routing with time windows in which requests arrive dynamically and the goal is to maximize the number of serviced customers. Early work has focused on very flexible routing settings where the decision to assign a vehicle to a customer is delayed until a vehicle is actually deployed to the customer. Motivated by real applications that require stability in the decision making, this paper considers a setting where the decision to assign a customer request to a vehicle must be taken when that request is accepted. Experimental results suggest that this constraint severely degrades the performance of existing algorithms. However, the paper shows how the use of stochastic information for vehicle assignment and request acceptance improves decision quality considerably. Moreover, the use of resource augmentation quantifies precisely the cost of commitment in online vehicle routing.

  14. Expert system for online surveillance of nuclear reactor coolant pumps

    DOE Patents [OSTI]

    Gross, Kenny C. (Bolingbrook, IL); Singer, Ralph M. (Naperville, IL); Humenik, Keith E. (Columbia, MD)

    1993-01-01T23:59:59.000Z

    An expert system for online surveillance of nuclear reactor coolant pumps. This system provides a means for early detection of pump or sensor degradation. Degradation is determined through the use of a statistical analysis technique, sequential probability ratio test, applied to information from several sensors which are responsive to differing physical parameters. The results of sequential testing of the data provide the operator with an early warning of possible sensor or pump failure.

  15. Online Monitoring of Plant Assets in the Nuclear Industry

    SciTech Connect (OSTI)

    Nancy Lybeck; Vivek Agarwal; Binh Pham; Richard Rusaw; Randy Bickford

    2013-10-01T23:59:59.000Z

    Today’s online monitoring technologies provide opportunities to perform predictive and proactive health management of assets within many different industries, in particular the defense and aerospace industries. The nuclear industry can leverage these technologies to enhance safety, productivity, and reliability of the aging fleet of existing nuclear power plants. The U.S. Department of Energy’s Light Water Reactor Sustainability Program is collaborating with the Electric Power Research Institute’s (EPRI’s) Long-Term Operations program to implement online monitoring in existing nuclear power plants. Proactive online monitoring in the nuclear industry is being explored using EPRI’s Fleet-Wide Prognostic and Health Management (FW-PHM) Suite software, a set of web-based diagnostic and prognostic tools and databases that serves as an integrated health monitoring architecture. This paper focuses on development of asset fault signatures used to assess the health status of generator step-up transformers and emergency diesel generators in nuclear power plants. Asset fault signatures describe the distinctive features based on technical examinations that can be used to detect a specific fault type. Fault signatures are developed based on the results of detailed technical research and on the knowledge and experience of technical experts. The Diagnostic Advisor of the FW-PHM Suite software matches developed fault signatures with operational data to provide early identification of critical faults and troubleshooting advice that could be used to distinguish between faults with similar symptoms. This research is important as it will support the automation of predictive online monitoring techniques in nuclear power plants to diagnose incipient faults, perform proactive maintenance, and estimate the remaining useful life of assets.

  16. AmiGO: online access to ontology and annotation data

    SciTech Connect (OSTI)

    Carbon, Seth; Ireland, Amelia; Mungall, Christopher J.; Shu, ShengQiang; Marshall, Brad; Lewis, Suzanna

    2009-01-15T23:59:59.000Z

    AmiGO is a web application that allows users to query, browse, and visualize ontologies and related gene product annotation (association) data. AmiGO can be used online at the Gene Ontology (GO) website to access the data provided by the GO Consortium; it can also be downloaded and installed to browse local ontologies and annotations. AmiGO is free open source software developed and maintained by the GO Consortium.

  17. Application Forms & Deadlines PFAA Submit on-line by

    E-Print Network [OSTI]

    Application (PFAA) on the Web The PFAA for 2014-15 will be available by March 1, 2014 and is due by May 1 for Applying Online" (http://www.princeton.edu/pr/aid/pdf/1415/PU-tips-for-using- web-aid-appl.pdf) for more Office or may be printed from the Web. 3. Parents' 2013 Income Tax Return and W-2 Statements Your parents

  18. Using evidence informed approval to create online learning resources

    E-Print Network [OSTI]

    Tracy, Frances; Jordan, Katy; Johnstone, Keith; Carmichael, Patrick

    2007-06-14T23:59:59.000Z

    the Department. The research itself consisted of four approaches: a literature review, student survey, student focus groups, and interviews with tutors. The project comprised an action cycle including analysis, fact-finding, conceptualisation, planning... the university for use as a virtual research environment (VRE), for online collaboration and project management. From October 2006, it has also been used to host sites for undergraduate course materials, replacing the Universities’ previous ‘CourseWork’ VLE...

  19. Page 1 of 3 Table of Research Directors for the Online MS Program

    E-Print Network [OSTI]

    Kent, Angela

    , aquatic ecology Wander, Michelle mwander@illinois.edu Soil organic matter, carbon sequestration Organic

  20. TAUOVERSUPERMON: LOW-OVERHEAD ONLINE PARALLEL PERFORMANCE MONITORING

    SciTech Connect (OSTI)

    SOTTILE, MATTHEW JOSEPH [Los Alamos National Laboratory; NATARAJ, AROON [Los Alamos National Laboratory; MALONY, ALLEN [Los Alamos National Laboratory; MORRIS, ALAN [Los Alamos National Laboratory; SHENDE, SAMEER [Los Alamos National Laboratory

    2007-01-30T23:59:59.000Z

    Online or Real-time application performance monitoring allows tracking performance characteristics during execution as opposed to doing so post-mortem. This opens up several possibilities otherwise unavailable such as real-time visualization and application performance steering that can be useful in the context of long-running applications. Two fundamental components that constitute such a performance monitor are the measurement and transport systems. The former captures performance metrics of individual contexts (processes, threads). The latter enables querying the parallel/distributed state from the different contexts and also allows measurement control. As HPC systems grow in size and complexity, the key challenge is to keep the online performance monitor scalable and low overhead while still providing a useful performance reporting capability. We adapt and combine two existing, mature systems - Tuning and Analysis Utility (TAU) and Supermon - to address this problem. Tau performs the measurement while Supermon is used to collect the distributed measurement state. Our experiments show that this novel approach of using a cluster-monitor, Supermon, as the transport for online performance data from Tau leads to very low-overhead application monitoring as well as other beneits unavailable from using a traditional transport such as NFS.