National Library of Energy BETA

Sample records for top loading front

  1. Tidal front affects the size of prey used by a top marine predator, the short-tailed shearwater (Puffinus tenuirostris)

    E-Print Network [OSTI]

    Tidal front affects the size of prey used by a top marine predator, the short-tailed shearwater densities of small euphausiids were associated with a tidal front on the north side of Akutan Pass. At most sites elsewhere in the Bering Sea, away from tidal fronts, shearwaters selected larger (14.2­20.1 mm

  2. Top Ten Reasons for DEOX as a Front End to Pyroprocessing

    SciTech Connect (OSTI)

    B.R. Westphal; K.J. Bateman; S.D. Herrmann

    2007-11-01

    A front end step is being considered to augment chopping during the treatment of spent oxide fuel by pyroprocessing. The front end step, termed DEOX for its emphasis on decladding via oxidation, employs high temperatures to promote the oxidation of UO2 to U3O8 via an oxygen carrier gas. During oxidation, the spent fuel experiences a 30% increase in lattice structure volume resulting in the separation of fuel from cladding with a reduced particle size. A potential added benefit of DEOX is the removal of fission products, either via direct release from the broken fuel structure or via oxidation and volatilization by the high temperature process. Fuel element chopping is the baseline operation to prepare spent oxide fuel for an electrolytic reduction step. Typical chopping lengths range from 1 to 5 mm for both individual elements and entire assemblies. During electrolytic reduction, uranium oxide is reduced to metallic uranium via a lithium molten salt. An electrorefining step is then performed to separate a majority of the fission products from the recoverable uranium. Although DEOX is based on a low temperature oxidation cycle near 500oC, additional conditions have been tested to distinguish their effects on the process.[1] Both oxygen and air have been utilized during the oxidation portion followed by vacuum conditions to temperatures as high as 1200oC. In addition, the effects of cladding on fission product removal have also been investigated with released fuel to temperatures greater than 500oC.

  3. Measurement of the front back asymmetry in top-antitop quark pairs produced in proton-antiproton collisions at center of mass energy = 1.96 TeV

    SciTech Connect (OSTI)

    Schwarz, Thomas A.; /Michigan U.

    2006-01-01

    Quarks, along with leptons and force carrying particles, are predicted by the Standard Model to be the fundamental constituents of nature. In distinction from the leptons, the quarks interact strongly through the chromodynamic force and are bound together within the hadrons. The familiar proton and neutron are bound states of the light ''up'' and ''down'' quarks. The most massive quark by far, the ''top'' quark, was discovered by the CDF and D0 experiments in March, 1995. The new quark was observed in p{bar p} collisions at 1.8 TeV at the Fermilab Tevatron. The mass of the top quark was measured to be 176 {+-} 13 GeV/c{sup 2} and the cross section 6.8{sub -2.4}{sup +3.6} pb. It is the Q = 2/3, T{sub 3} = +1/2 member of the third generation weak-isospin doublet along with the bottom quark. The top quark is the final Standard Model quark to be discovered. Along with whatever is responsible for electroweak symmetry breaking, top quark physics is considered one of the least understood sectors of the Standard Model and represents a front line of our understanding of particle physics. Currently, the only direct measurements of top quark properties come from the CDF and D0 experiments observing p{bar p} collisions at the Tevatron. Top quark production at the Tevatron is almost exclusively by quark-antiquark annihilation, q{bar q} {yields} t{bar t} (85%), and gluon fusion, gg {yields} t{bar t} (15%), mediated by the strong force. The theoretical cross-section for this process is {sigma}{sub t{bar t}} = 6.7 {+-} 0.8 pb for m{sub t} = 175 GeV/c{sup 2}. Top quarks can also be produced at the Tevatron via q{bar b}{prime} {yields} tb and qg {yields} q{prime}tb through the weak interaction. The cross section for these processes is lower (3pb) and the signal is much more difficult to isolate as backgrounds are much higher. The top quark is predicted to decay almost exclusively into a W-boson and a bottom quark (t {yields} Wb). The total decay width t {yields} Wb is {Lambda} = 1.50 GeV. This corresponds to an incredibly short lifetime of 0.5 x 10{sup -24} seconds. This happens so quickly that hadronization and bound states do not take place, which leads to the interesting consequence that the top quark spin information is passed to the decay products.

  4. Front Burner- Issue 14

    Broader source: Energy.gov [DOE]

    The Cybersecurity Front Burner Issue No. 14 addresses the 2013 National Cybersecurity Awareness Month (NCSAM) Campaign and Phishing Scams.

  5. Front Burner- Issue 15

    Broader source: Energy.gov [DOE]

    The Cybersecurity Front Burner Issue No. 15 addresses the DOE eSCRM Program and Secure Online Shopping.

  6. Top studies

    SciTech Connect (OSTI)

    T. Dorigo

    2003-01-02

    The top quark, discovered in 1994 at the Tevatron, has proven a very interesting particle. Its characteristics allow both to perform stringent tests of electroweak theory, and to search for new physics through a deviation from standard model predictions for several of its peculiar properties. I will review the status of top physics and briefly describe the potential of experiments of the near future.

  7. Phase front patterns in shape memory alloy strips

    SciTech Connect (OSTI)

    Lagoudas, D.C.; Howard, S.D. [Texas A& M Univ., TX (United States)

    1995-12-31

    Uniaxial thermomechanical tests of Shape Memory Alloy (SMA) Nitinol strips, below the austenitic start temperature, have shown the formation of multiple phase front patterns forming at approximately 45 degrees angle with respect to the applied load. These phase fronts, that separate self-accommodating martensitic variants from detwinned martensite, propagate along the specimen in the direction of applied load, until fully detwinned martensite is developed. Similar patterns of martensitic-austenitic phase fronts occur when the temperature is raised above austenitic finish, and uniaxial loading is applied to the strip specimens. An experimental study of this phenomenon, together with some preliminary modelling results will be presented. In contrast to the above uniform loading case, experimental results and numerical simulations for the propagation of a phase transformation front, induced by an imposed temperature gradient, will also be presented.

  8. Front Burner- Issue 18

    Broader source: Energy.gov [DOE]

    The Cybersecurity Front Burner Issue No. 18 addresses keeping kids safe on the Internet, cyber crime, and DOE Cyber awareness and training initiatives.

  9. Front Burner- Issue 13

    Broader source: Energy.gov [DOE]

    The Cybersecurity Front Burner Issue No. 13 contained a message from the Associate Chief Information Officer (ACIO) for Cybersecurity as well as a listing of recommended cybersecurity practices.

  10. Simulation of Top Oil Temperature for Transformers

    E-Print Network [OSTI]

    Simulation of Top Oil Temperature for Transformers Masters Thesis and Final Project Report Power of Mines Georgia Tech · Illinois · Iowa State · Texas A&M · Washington State · Wisconsin Simulation of Top-Oil for the PSERC project "On-Line Peak Loading of Substation Distribution Transformers Through Accurate Temperature

  11. Plutonium Immobilization Can Loading Preliminary Specifications

    SciTech Connect (OSTI)

    Kriikku, E.

    1998-11-25

    This report discusses the Plutonium Immobilization can loading preliminary equipment specifications and includes a process block diagram, process description, equipment list, preliminary equipment specifications, plan and elevation sketches, and some commercial catalogs. This report identifies loading pucks into cans and backfilling cans with helium as the top priority can loading development areas.

  12. Load cell

    DOE Patents [OSTI]

    Spletzer, B.L.

    1998-12-15

    A load cell combines the outputs of a plurality of strain gauges to measure components of an applied load. Combination of strain gauge outputs allows measurement of any of six load components without requiring complex machining or mechanical linkages to isolate load components. An example six axis load cell produces six independent analog outputs, each directly proportional to one of the six general load components. 16 figs.

  13. Top-Down Suppression

    E-Print Network [OSTI]

    Rissman, JA; Zanto, TP

    2015-01-01

    cortex contribute to top-down modulation of visual2003). Neural mechanisms of top-down control during spatialC. D. , & Li, W. (2013). Top-down influences on visual

  14. Single top and top pair production

    E-Print Network [OSTI]

    Nikolaos Kidonakis

    2012-12-12

    I present results for single-top and top-pair production at the LHC and the Tevatron. Higher-order two-loop corrections are used to achieve NNLL resummation, which is then used to derive NNLO soft-gluon corrections. Results are presented for total cross sections, top transverse momentum distributions, and top rapidity distributions. All results are in excellent agreement with data from the LHC and the Tevatron. I also clarify the differences between various methods in top-pair production and their relation to exact NNLO results.

  15. ARM - Front Page

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Comments? WeDatastreamstps DocumentationAtlanticENAField Participants Campaign Details News FieldgovFront Page

  16. Top physics at CDF

    SciTech Connect (OSTI)

    Julia Thom

    2004-06-24

    Precision studies of top quark properties are a primary goal of the Run II physics program at the Fermilab Tevatron. Marking the first stages of this program, the CDF collaboration presents recent results on top pair production cross section, single top physics and top mass, using between 109 and 200 pb{sup -1} of Run II data.

  17. Tevatron Top Results

    E-Print Network [OSTI]

    Christophe Clement

    2006-05-28

    I present the latest results from the CDF and D0 collaborations on top quark production (single top and top quark pair production) at the Tevatron proton-antiproton collider at sqrt(s) =1.96 TeV, measurements of the top quark decay properties such as the branching ratio B(t -> Wb), the W helicity in t -> Wb decays, and measurements of fundamental parameters such as the top quark charge and mass.

  18. Physics of top

    E-Print Network [OSTI]

    C. -P. Yuan

    2006-04-24

    I will briefly review the physics of top quark at high energy colliders. A new discovery of single-top event at the Fermilab Tevatron is expected. At the CERN Large Hadron Collider, detailed top quark properties can be measured and new physics ideas in which top quark plays a special role can be tested. I will also discuss a few phenomenological methods for analyzing experimental data to study top quark interactions.

  19. Tevatron top physics

    E-Print Network [OSTI]

    Jeannine Wagner-Kuhr; for the CDF; D0 Collaborations

    2009-04-15

    A summary of the most recent results on top quark physics obtained at Fermilab's Tevatron proton-antiproton collider, operating at a centre of mass energy of 1.96 TeV, is presented. Measurements of the top pair and single top quark production cross sections, the investigation of top quark decay properties, the precision measurement of the top quark mass as well as searches for physics beyond the standard model are discussed.

  20. The Dark Top

    E-Print Network [OSTI]

    David Poland; Jesse Thaler

    2008-12-08

    We present a class of composite Higgs models in which the particle that regulates the top quark contribution to the Higgs potential is also a weakly-interacting dark matter candidate. This color-neutral "dark top" is related to the standard model top quark through a large global symmetry. Because the same couplings that control the Higgs potential also determine various dark matter cross sections, the dark top scenario is quite predictive once the dark top mass and various quantum numbers are specified. We construct two concrete examples of dark top models with plausible UV completions and study their dark matter properties and LHC signatures.

  1. Top Physics at ATLAS

    E-Print Network [OSTI]

    Marcello Barisonzi

    2005-08-02

    The Large Hadron Collider LHC is a top quark factory: due to its high design luminosity, LHC will produce about 200 millions of top quarks per year of operation. The large amount of data will allow to study with great precision the properties of the top quark, most notably cross-section, mass and spin. The Top Physics Working Group has been set up at the ATLAS experiment, to evaluate the precision reach of physics measurements in the top sector, and to study the systematic effects of the ATLAS detector on such measurements. This reports give an overview of the main activities of the ATLAS Top Physics Working Group in 2004.

  2. TOP 2014: Experimental Summary

    E-Print Network [OSTI]

    Christian Schwanenberger

    2015-03-05

    A summary of the experimental results of the TOP2014 International Workshop in Cannes, France, is presented. This inspiring conference clearly showed the richness and diversity of top-quark physics research. Results cover a very broad spectrum of analyses involving studies of the strong and electroweak interactions of the top quark, high-precision measurements of intrinsic top-quark properties, developments of new tools in top-quark analyses, observations of new Standard Model processes, the interaction between the top quark and the Higgs boson and sensitive searches for new physics beyond the Standard Model.

  3. Front End Loading (FEL) and Process Engineering Workflow

    E-Print Network [OSTI]

    Spangler, Ryan

    2005-05-20

    review of past projects, and develop a comprehensive list of "standard" FEL deliverables. Once these deliverables were defined, a review of engineering workflow activities for each stage of the FEL process was performed. The list of deliverables...

  4. Theoretical overview on top pair production and single top production

    E-Print Network [OSTI]

    Stefan Weinzierl

    2012-01-19

    In this talk I will give an overview on theoretical aspects of top quark physics. The focus lies on top pair production and single top production.

  5. Top Quark Properties

    E-Print Network [OSTI]

    Tony M. Liss

    2012-12-03

    I review the latest results on properties of the top quark from the Tevatron and the LHC, including results measured in $t\\bar{t}$ and single-top events on the mass, width, couplings, and spin correlations.

  6. Top Quark Physics

    E-Print Network [OSTI]

    Erich W. Varnes

    2008-10-20

    A review is presented of the current experimental status of the top quark sector of the standard model. The measurements summarized include searches for electroweak single top production, the latest results on the ttbar production cross section, and searches for new physics in top quark production and decay. In addition, the recent measurement of the top quark mass to a precision of 0.7% is highlighted

  7. Top Physics at LHC

    E-Print Network [OSTI]

    M. Vander Donckt; for the CMS; ATLAS Collaborations

    2008-05-21

    The Large Hadron Collider (LHC) will provide a huge amount of top-antitop events, making the LHC a top quark factory, producing 1 tt pair per second at a luminosity of 10^33cm-2s-1. A large top quark sample will be available from the start of LHC and will play an important role in commissioning the CMS and ATLAS detectors. An overview of the top quark measurements during the first data-taking period is given.

  8. Top Threshold Physics

    E-Print Network [OSTI]

    Andre H. Hoang

    2006-04-21

    Running a future Linear Collider at the top pair threshold allows for precise measurements of the mass, the widths and the couplings of the top quark. I give a nontechnical review on recent theoretical developments and the theory status in top threshold physics concerning QCD corrections and top quark finite lifetime and electroweak effects. I also discuss threshold physics in the context of measurements of the top Yukawa coupling from $e^+e^-\\to t\\bar t H$ and of squark pair production.

  9. Light-Front Holographic QCD and Emerging Confinement

    E-Print Network [OSTI]

    Stanley J. Brodsky; Guy F. de Teramond; Hans Gunter Dosch; Joshua Erlich

    2015-02-13

    In this report we explore the remarkable connections between light-front dynamics, its holographic mapping to gravity in a higher-dimensional anti-de Sitter (AdS) space, and conformal quantum mechanics. This approach provides new insights into the origin of a fundamental mass scale and the physics underlying confinement dynamics in QCD in the limit of massless quarks. The result is a relativistic light-front wave equation for arbitrary spin with an effective confinement potential derived from a conformal action and its embedding in AdS space. This equation allows for the computation of essential features of hadron spectra in terms of a single scale. The light-front holographic methods described here gives a precise interpretation of holographic variables and quantities in AdS in terms of light-front variables and quantum numbers. This leads to a relation between the AdS wave functions and the boost-invariant light-front wave functions describing the internal structure of hadronic bound states in physical space-time. The pion is massless in the chiral limit and the excitation spectra of relativistic light-quark meson and baryon bound states lie on linear Regge trajectories with identical slopes in the radial and orbital quantum numbers. In the light-front holographic approach described here currents are expressed as an infinite sum of poles, and form factors as a product of poles. At large $q^2$ the form factor incorporates the correct power-law fall-off for hard scattering independent of the specific dynamics and is dictated by the twist. At low $q^2$ the form factor leads to vector dominance. The approach is also extended to include small quark masses. We briefly review in this report other holographic approaches to QCD, in particular top-down and bottom-up models based on chiral symmetry breaking. We also include a discussion of open problems and future applications.

  10. Light-front holographic QCD and emerging confinement

    SciTech Connect (OSTI)

    Brodsky, Stanley J.; de Téramond, Guy F.; Dosch, Hans Günter; Erlich, Joshua

    2015-05-21

    In this study we explore the remarkable connections between light-front dynamics, its holographic mapping to gravity in a higher-dimensional anti-de Sitter (AdS) space, and conformal quantum mechanics. This approach provides new insights into the origin of a fundamental mass scale and the physics underlying confinement dynamics in QCD in the limit of massless quarks. The result is a relativistic light-front wave equation for arbitrary spin with an effective confinement potential derived from a conformal action and its embedding in AdS space. This equation allows for the computation of essential features of hadron spectra in terms of a single scale. The light-front holographic methods described here give a precise interpretation of holographic variables and quantities in AdS space in terms of light-front variables and quantum numbers. This leads to a relation between the AdS wave functions and the boost-invariant light-front wave functions describing the internal structure of hadronic bound-states in physical spacetime. The pion is massless in the chiral limit and the excitation spectra of relativistic light-quark meson and baryon bound states lie on linear Regge trajectories with identical slopes in the radial and orbital quantum numbers. In the light-front holographic approach described here currents are expressed as an infinite sum of poles, and form factors as a product of poles. At large q2 the form factor incorporates the correct power-law fall-off for hard scattering independent of the specific dynamics and is dictated by the twist. At low q2 the form factor leads to vector dominance. The approach is also extended to include small quark masses. We briefly review in this report other holographic approaches to QCD, in particular top-down and bottom-up models based on chiral symmetry breaking. We also include a discussion of open problems and future applications.

  11. Light-front holographic QCD and emerging confinement

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

    Brodsky, Stanley J.; de Téramond, Guy F.; Dosch, Hans Günter; Erlich, Joshua

    2015-05-21

    In this study we explore the remarkable connections between light-front dynamics, its holographic mapping to gravity in a higher-dimensional anti-de Sitter (AdS) space, and conformal quantum mechanics. This approach provides new insights into the origin of a fundamental mass scale and the physics underlying confinement dynamics in QCD in the limit of massless quarks. The result is a relativistic light-front wave equation for arbitrary spin with an effective confinement potential derived from a conformal action and its embedding in AdS space. This equation allows for the computation of essential features of hadron spectra in terms of a single scale. Themore »light-front holographic methods described here give a precise interpretation of holographic variables and quantities in AdS space in terms of light-front variables and quantum numbers. This leads to a relation between the AdS wave functions and the boost-invariant light-front wave functions describing the internal structure of hadronic bound-states in physical spacetime. The pion is massless in the chiral limit and the excitation spectra of relativistic light-quark meson and baryon bound states lie on linear Regge trajectories with identical slopes in the radial and orbital quantum numbers. In the light-front holographic approach described here currents are expressed as an infinite sum of poles, and form factors as a product of poles. At large q2 the form factor incorporates the correct power-law fall-off for hard scattering independent of the specific dynamics and is dictated by the twist. At low q2 the form factor leads to vector dominance. The approach is also extended to include small quark masses. We briefly review in this report other holographic approaches to QCD, in particular top-down and bottom-up models based on chiral symmetry breaking. We also include a discussion of open problems and future applications.« less

  12. Top Physics at CDF

    SciTech Connect (OSTI)

    Moon, Chang-Seong

    2011-06-01

    We present the recent results of top-quark physics using up to 6 fb{sup -1} of p{bar p} collisions at a center of mass energy of {radical}s = 1.96 TeV analyzed by the CDF collaboration. Thanks to this large data sample, precision top quark measurements are now a reality at the Tevatron. Further, several new physics signals could appear in this large dataset. We will present the latest measurements of top quark intrinsic properties as well as direct searches for new physics in the top sector.

  13. Top Physics at CDF

    E-Print Network [OSTI]

    Chang-Seong Moon

    2011-07-01

    We present the recent results of top-quark physics using up to 6 fb$^{-1}$ of $p \\bar p$ collisions at a center of mass energy of $\\sqrt s$ = 1.96 TeV analyzed by the CDF collaboration. Thanks to this large data sample, precision top quark measurements are now a reality at the Tevatron. Further, several new physics signals could appear in this large dataset. We will present the latest measurements of top quark intrinsic properties as well as direct searches for new physics in the top sector.

  14. Top quark in theory

    E-Print Network [OSTI]

    Eric Laenen

    2008-09-18

    I review how the top quark is embedded in the Standard Model and some its proposed extensions, and how it manifests itself in various hadron collider signals.

  15. Top Mass and Properties

    E-Print Network [OSTI]

    Yen-Chu Chen

    2008-05-15

    The top quark was discovered in 1995. The top quark mass is now well measured at the Tevatron, with uncertainty getting below 1% of the top mass. The world average from last year was 170.9 $\\pm$ 1.8 GeV/$c^2$. The new CDF measurement is 172 $\\pm$ 1.2 (stat) $\\pm$ 1.5 (sys) GeV/$c^2$, and D0 will soon present a new measurement. The top quark mass is an important parameter in the Standard Model, and should be measured as precisely as possible. To learn more about the top quark observed and study possible new physics, other properties also should be measured. At the Tevatron, the charge of the top quark can be measured directly. Examples of other properties studied and reported in this presentation are W helicity, top decay branching ratio to b ($R_b$), searches for $t \\to H b$ and for flavor changing neutral current (FCNC). The results are all consistent with the Standard Model within current statistics. With significantly more data being collected at the Tevatron, precision measurements of the top properties are just starting.

  16. Top physics at CDF

    SciTech Connect (OSTI)

    Hughes, R.E. [Univ. of Rochester, NY (United States)

    1997-01-01

    We report on top physics results using a 100 pb{sup -1} data sample of p{bar p} collisions at {radical}s = 1.8 TeV collected with the Collider Detector at Fermilab (CDF). We have identified top signals in a variety of decay channels, and used these channels to extract a measurement of the top mass and production cross section. A subset of the data (67 pb{sup -1}) is used to determine M{sub top} = 176 {+-} 8(stat) {+-} 10(syst) and {sigma}(tt) = 7.6 {sub -2.0}{sup +2.4} pb. We present studies of the kinematics of t{bar t} events and extract the first direct measurement of V{sub tb}. Finally, we indicate prospects for future study of top physics at the Tevatron.

  17. Top Quark Properties

    E-Print Network [OSTI]

    Yvonne Peters; for the Atlas Collaboration; CDF Collaboration; CMS Collaboration; D0 Collaboration

    2011-12-02

    Since its discovery in 1995 by the CDF and D0 collaborations at the Fermilab Tevatron collider, the top quark has undergone intensive studies. Besides the Tevatron experiments, with the start of the LHC in 2010 a top quark factory started its operation. It is now possible to measure top quark properties simultaneously at four different experiments, namely ATLAS and CMS at LHC and CDF and D0 at Tevatron. Having collected thousands of top quarks each, several top quark properties have been measured precisely, while others are being measured for the first time. In this article, recent measurements of top quark properties from ATLAS, CDF, CMS and D0 are presented, using up to 5.4 fb-1 of integrated luminosity at the Tevatron and 1.1 fb^-1 at the LHC. In particular, measurements of the top quark mass, mass difference, forward backward charge asymmetry, tt - spin correlations, the ratio of branching fractions, W helicity, anomalous couplings, color flow and the search for flavor changing neutral currents are discussed.

  18. Differential top pair cross section and top anti-top plus jets Physics

    E-Print Network [OSTI]

    Malgorzata Worek

    2013-02-14

    A brief summary of the current status of the next-to-leading order QCD corrections to top quark pair production and the associated production of top anti-top with jet(s) in different configurations, i.e. with one jet, two jets and another top anti-top pair, is presented.

  19. Top Needs of Occupy Sites

    E-Print Network [OSTI]

    Baldwin, J.R.

    2012-01-01

    Individuals Occupy Sourcing Top Needs of Occupy Sites Art byand Social Media in Colombia Top Needs of Occupy Sites J.R.Baldwin collects the top needs of Occupy sites across the

  20. Top Jets at the LHC

    E-Print Network [OSTI]

    Almeida, L.G.

    2009-01-01

    Top Jets at the LHC Leandro G. Almeida, Seung J. Lee, GiladWIS/17/08-SEPT-DPP Top Jets at the LHC Leandro G. Almeidareconstructed as a single jet, a “top-jet”. The most basic “

  1. Top-of-Rail lubricant

    SciTech Connect (OSTI)

    Alzoubi, M. F.; Fenske, G. R.; Erck, R. A.; Boparai, A. S.

    2000-07-14

    Analysis of the volatile and semivolatile fractions collected after use of the TOR lubricant indicated that other than contaminants in the collection laboratory, no compounds on the EPA's Target Compound Lists (Tables 2 and 5) were detected in these fractions. The data of these qualitative analyses, given in the various tables in the text, indicate only the relative amounts of the tentatively identified compounds. The authors recommend that quantitative analysis be performed on the volatile and semivolatile fractions to allow confirmation of the tentatively identified compounds and to obtain absolute amounts of the detected compounds. Additionally, the semivolatile fraction should be analyzed by liquid chromatography/mass spectrometry to identify compounds that are not chromatographable under the temperature program used for determination of semivolatile compounds. Introducing the top-of-rail (TOR) lubricant into the wheel/rail interface results in a reduction of almost 60% of lateral friction force over the forces encountered under dry conditions. This reveals good potential for energy savings, as well as wear reduction, for railroad companies. In TOR lubrication, an increase in the angle of attack and axle load results in increased lateral friction and rate of lubricant consumption. The most efficient TOR lubricant quantity to be used in the wheel/rail interface must be calculated precisely according to the number of cars, axle loads, train speed, and angle of attack.

  2. Ocean fronts trigger high latitude phytoplankton blooms

    E-Print Network [OSTI]

    Taylor, John R.

    Density fronts are ubiquitous features of the upper ocean. Here, numerical simulations show that restratification at fronts inhibits vertical mixing, triggering phytoplankton blooms in low-light conditions. The stability ...

  3. 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.

  4. The Front End Fermi National Accelerator Lab

    E-Print Network [OSTI]

    McDonald, Kirk

    The Front End MAP Review Fermi National Accelerator Lab August 24-26, 2010 Harold G. Kirk Brookhaven National Laboratory #12;August 2426, 2010 MAP ReviewFront End Harold G. Kirk ReviewFront End Harold G. Kirk 3 The Muon Collider/Neutrino Factory

  5. Top Quark Measurements in CMS

    E-Print Network [OSTI]

    Efe Yazgan; for the CMS Collaboration

    2014-09-12

    Measurements involving top quarks provide important tests of QCD. A selected set of top quark measurements in CMS including the strong coupling constant, top quark pole mass, constraints on parton distribution functions, top quark pair differential cross sections, ttbar+0 and >0 jet events, top quark mass studied using various kinematic variables in different phase-space regions, and alternative top quark mass measurements is presented. The evolution of expected uncertainties in future LHC runs for the standard and alternative top quark mass measurements is also presented.

  6. Physics with boosted top quarks

    E-Print Network [OSTI]

    Elin Bergeaas Kuutmann

    2014-08-29

    The production at the LHC of boosted top quarks (top quarks with a transverse momentum that greatly exceeds their rest mass) is a promising process to search for phenomena beyond the Standard Model. In this contribution several examples are discussed of new techniques to reconstruct and identify (tag) the collimated decay topology of the boosted hadronic decays of top quarks. Boosted top reconstruction techniques have been utilized in searches for new physical phenomena. An overview is given of searches by ATLAS, CDF and CMS for heavy new particles decaying into a top and an anti-top quark, vector-like quarks and supersymmetric partners to the top quark.

  7. ATLAS results on top properties

    E-Print Network [OSTI]

    F. Derue

    2014-08-26

    Recent measurements of top quark properties using $t{\\bar t}$ events produced in proton-proton collisions at the Large Hadron Collider with centre of mass energies of 7 and 8 TeV and detected by the ATLAS experiment are presented. These results include top quark mass, the top and anti-top mass difference, the electric charge, the top quark polarization and spin correlation, the $t{\\bar t}$ charge asymmetry and the search for flavour changing neutral currents.

  8. Seismic mass Top electrode

    E-Print Network [OSTI]

    Kraft, Michael

    assembly process. For the measurements of the physical dimensions of the seismic mass a micrometer was usedSeismic mass Top electrode Bottom electrode x C1 C2 Chapter 4: The Micromachined Sensing Element supplied by Druck, Ltd., Groby, Leics. The manufacturing process at Druck was still in its experimental

  9. Method of fabricating conductive electrodes on the front and backside of a thin film structure

    DOE Patents [OSTI]

    Tabada, Phillipe J. (Roseville, CA); Tabada, legal representative, Melody (Roseville, CA); Pannu, Satinderpall S. (Pleasanton, CA)

    2011-05-22

    A method of fabricating a thin film device having conductive front and backside electrodes or contacts. Top-side cavities are first formed on a first dielectric layer, followed by the deposition of a metal layer on the first dielectric layer to fill the cavities. Defined metal structures are etched from the metal layer to include the cavity-filled metal, followed by depositing a second dielectric layer over the metal structures. Additional levels of defined metal structures may be formed in a similar manner with vias connecting metal structures between levels. After a final dielectric layer is deposited, a top surface of a metal structure of an uppermost metal layer is exposed through the final dielectric layer to form a front-side electrode, and a bottom surface of a cavity-filled portion of a metal structure of a lowermost metal layer is also exposed through the first dielectric layer to form a back-side electrode.

  10. Early Top Physics with ATLAS

    E-Print Network [OSTI]

    J. Schieck

    2009-01-12

    The ATLAS detector is one of the two multi-purpose experiments located at the Large Hadron Collider (LHC) at CERN and is expected to collect first collision data in summer 2009. Due to the large top-quark production cross-section the LHC will function as a top-quark factory allowing to measure top-quark properties even at initial luminosities. We present some recently-performed studies, focussing on measurements of the top pair and single top production cross-sections with the first fb-1 of data. The potential for the measurement of other top-quark properties like the mass will be also briefly discussed.

  11. FrontYard *** UpstairsLand

    E-Print Network [OSTI]

    Rosenthal, Jeffrey S.

    Kitchen log[2] Dining Vegetable Embankment RiverShall OutsidePen InsidePen button FrontBarn Windmill [3

  12. Helices in the wake of precipitation fronts

    E-Print Network [OSTI]

    Shibi Thomas; Istvan Lagzi; Ferenc Molnar Jr; Zoltan Racz

    2013-08-30

    A theoretical study of the emergence of helices in the wake of precipitation fronts is presented. The precipitation dynamics is described by the Cahn-Hilliard equation and the fronts are obtained by quenching the system into a linearly unstable state. Confining the process onto the surface of a cylinder and using the pulled-front formalism, our analytical calculations show that there are front solutions that propagate into the unstable state and leave behind a helical structure. We find that helical patterns emerge only if the radius of the cylinder R is larger than a critical value R>R_c, in agreement with recent experiments.

  13. Top Management Involvement in the Adoption of Energy Efficiency Projects

    E-Print Network [OSTI]

    Blass, Vered; Corbett, Charles J.; Delmas, Magali A; Muthulingam, Suresh

    2011-01-01

    of Recommendations Top Management * Energy Costs/Sales TopTop Management Top Management * Energy Costs/Sales TopTop Management Top Management * Energy Costs/Sales Top

  14. Top marine predators track Lagrangian coherent structures

    E-Print Network [OSTI]

    E. Tew Kai; V. Rossi; J. Sudre; H. Weimerskirch; C. Lopez; E. Hernandez-Garcia; F. Marsac; V. Garcon

    2009-04-13

    Meso- and submesoscales (fronts, eddies, filaments) in surface ocean flow have a crucial influence on marine ecosystems. Their dynamics partly control the foraging behaviour and the displacement of marine top predators (tuna, birds, turtles, and cetaceans). In this work we focus on the role of submesoscale structures in the Mozambique Channel on the distribution of a marine predator, the Great Frigatebird. Using a newly developed dynamical concept, namely the Finite-Size Lyapunov Exponent (FSLE), we have identified Lagrangian coherent structures (LCSs) present in the surface flow in the Channel over a 2-month observation period (August and September 2003). By comparing seabirds' satellite positions with LCSs locations, we demonstrate that frigatebirds track precisely these structures in the Mozambique Channel, providing the first evidence that a top predator is able to track these FSLE ridges to locate food patches. After comparing bird positions during long and short trips, and different parts of these trips, we propose several hypotheses to understand how frigatebirds can follow these LCSs. The birds might use visual and/or olfactory cues and/or atmospheric current changes over the structures to move along these biological corridors. The birds being often associated to tuna schools around foraging areas, a thorough comprehension of their foraging behaviour and movement during the breeding season is crucial not only to seabirds' ecology but also to an appropriate ecosystemic approach of fisheries in the Channel.

  15. Top Jets at the LHC

    E-Print Network [OSTI]

    Almeida, L.G.

    2009-01-01

    Top Jets at the LHC Leandro G. Almeida, Seung J. Lee, GiladSB-08-37; WIS/17/08-SEPT-DPP Top Jets at the LHC Leandro G.p T hadronically-decaying top quarks at the Large Hadron

  16. Top Physics at the LHC

    E-Print Network [OSTI]

    P. de Jong

    2009-02-27

    The LHC will be a top quark factory. In this note, the central role of the top quark for LHC physics will be discussed, and an overview will be given of the studies of top quark properties in preparation, with an emphasis on the systematic uncertainties that will dominate most measurements.

  17. Top-ophilia Chris Quigg

    E-Print Network [OSTI]

    Quigg, Chris

    Top-ophilia Chris Quigg Theoretical Physics Department, Fermi National Accelerator Laboratory P.O. Box 500, Batavia, Illinois 60510 USA January 11, 2008 1 Room for the Top Almost from the moment, it became clear that the top quark must exist. Exactly at what mass, we couldn't say, but we knew just how

  18. Top physics results at CDF

    SciTech Connect (OSTI)

    Vickey, Trevor; /Illinois U., Urbana

    2005-05-01

    The most recent results on top quark physics at CDF are reported. Measurements of cross-section and mass are presented, and the status of single top quark production searches are discussed. The results obtained from probing various top quark properties are also presented.

  19. Front End G4beamline simulation update Front End G4beamline simulation update

    E-Print Network [OSTI]

    McDonald, Kirk

    1 Front End G4beamline simulation update Front End G4beamline simulation update Pavel Snopok University of California Riverside September 14, 2010 #12;2 Front End G4beamline simulation update More yields per incident proton. Energy deposition study in G4beamline is underway. All numerical results

  20. Top Quark Pair Production in Early CMS Data

    E-Print Network [OSTI]

    Kao, Shih-Chuan

    2011-01-01

    23 2.13 top decay . . . . . . . . . . . . .of the Top Quark . . . . . . . . . . . . . . . . . . . . .20 Top Production in Hadron

  1. Top quark physics at CDF

    E-Print Network [OSTI]

    Karolos Potamianos

    2011-12-01

    We present the recent results of top-quark physics using up to 6 fb$^{-1}$ of $p\\bar{p}$ collisions analyzed by the CDF collaboration. The large number of top quark events analyzed, of the order of several thousands, allows stringent checks of the standard model predictions. Also, the top quark is widely believed to be a window to new physics. We present the latest measurements of top quark intrinsic properties as well as direct searches for new physics in the top sector.

  2. Light front distribution of the chiral condensate

    E-Print Network [OSTI]

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

    2013-09-19

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

  3. Top quark pair production and top quark properties at CDF

    E-Print Network [OSTI]

    Chang-Seong Moon

    2014-11-01

    We present the most recent measurements of top quark pairs production and top quark properties in proton-antiproton collisions with center-of-mass energy of 1.96 TeV using CDF II detector at the Tevatron. The combination of top pair production cross section measurements and the direct measurement of top quark width are reported. The test of Standard Model predictions for top quark decaying into $b$-quarks, performed by measuring the ratio $R$ between the top quark branching fraction to $b$-quark and the branching fraction to any type of down quark is shown. The extraction of the CKM matrix element $|V_{tb}|$ from the ratio $R$ is discussed. We also present the latest measurements on the forward-backward asymmetry ($A_{FB}$) in top anti-top quark production. With the full CDF Run II data set, the measurements are performed in top anti-top decaying to final states that contain one or two charged leptons (electrons or muons). In addition, we combine the results of the leptonic forward-backward asymmetry in $t\\bar t$ system between the two final states. All the results show deviations from the next-to-leading order (NLO) standard model (SM) calculation.

  4. PAGE Cover: Top Photo

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy Bills andOrder 422.1, CONDUCT P - . . - - 4 v - r REQUESTCostPAGE Cover: Top

  5. Top-Higgs and Top-pion phenomenology in the Top Triangle Moose model

    E-Print Network [OSTI]

    R. Sekhar Chivukula; Baradhwaj Coleppa; Heather E. Logan; Adam Martin; Elizabeth H. Simmons

    2011-01-31

    We discuss the deconstructed version of a topcolor-assisted technicolor model wherein the mechanism of top quark mass generation is separated from the rest of electroweak symmetry breaking. The minimal deconstructed version of this scenario is a "triangle moose" model, where the top quark gets its mass from coupling to a top-Higgs field, while the gauge boson masses are generated from a Higgsless sector. The spectrum of the model includes scalar (top-Higgs) and pseudoscalar (top-pion) states. In this paper, we study the properties of these particles, discuss their production mechanisms and decay modes, and suggest how best to search for them at the LHC.

  6. Materials Technologies: Goals, Strategies, and Top Accomplishments...

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

    Materials Technologies: Goals, Strategies, and Top Accomplishments (Brochure), Vehicle Technologies Program (VTP) Materials Technologies: Goals, Strategies, and Top Accomplishments...

  7. Top-antitop and Top-top Resonances in the Dilepton Channel at the CERN LHC

    E-Print Network [OSTI]

    Yang Bai; Zhenyu Han

    2009-04-12

    We perform a model-independent study for top-antitop and top-top resonances in the dilepton channel at the Large Hadtron Collider. In this channel, we can solve the kinematic system to obtain the momenta of all particles including the two neutrinos, and hence the resonance mass and spin. For discovering top-antitop resonances, the dilepton channel is competitive to the semileptonic channel because of the good resolution of lepton momentum measurement and small standard model backgrounds. Moreover, the charges of the two leptons can be identified, which makes the dilepton channel advantageous for discovering top-top resonances and for distinguishing resonance spins. We discuss and provide resolutions for difficulties associated with heavy resonances and highly boosted top quarks.

  8. Top quark mass measurements

    SciTech Connect (OSTI)

    L. Cerrito

    2004-07-16

    Preliminary results on the measurement of the top quark mass at the Tevatron Collider are presented. In the dilepton decay channel, the CDF Collaboration measures m{sub t} = 175.0{sub -16.9}{sup +17.4}(stat.){+-}8.4(syst.) GeV/c{sup 2}, using a sample of {approx} 126 pb{sup -1} of proton-antiproton collision data at {radical}s = 1.96 TeV (Run II). In the lepton plus jets channel, the CDF Collaboration measures 177.5{sub -9.4}{sup +12.7}(stat.) {+-} 7.1(syst.) GeV/c{sup 2}, using a sample of {approx} 102 pb{sup -1} at {radical}s = 1.96 TeV. The D0 Collaboration has newly applied a likelihood technique to improve the analysis of {approx} 125 pb{sup -1} of proton-antiproton collisions at {radical}s = 1.8 TeV (Run I), with the result: m{sub t} = 180.1 {+-} 3.6(stat.) {+-}3.9(syst.) GeV/c{sup 2}. The latter is combined with all the measurements based on the data collected in Run I to yield the most recent and comprehensive experimental determination of the top quark mass: m{sub t} = 178.0 {+-} 2.7(stat.) {+-} 3.3(syst.) GeV/c{sup 2}.

  9. Demand-Side Response from Industrial Loads

    SciTech Connect (OSTI)

    Starke, Michael R; Alkadi, Nasr E; Letto, Daryl; Johnson, Brandon; Dowling, Kevin; George, Raoule; Khan, Saqib

    2013-01-01

    Through a research study funded by the Department of Energy, Smart Grid solutions company ENBALA Power Networks along with the Oak Ridge National Laboratory (ORNL) have geospatially quantified the potential flexibility within industrial loads to leverage their inherent process storage to help support the management of the electricity grid. The study found that there is an excess of 12 GW of demand-side load flexibility available in a select list of top industrial facilities in the United States. Future studies will expand on this quantity of flexibility as more in-depth analysis of different industries is conducted and demonstrations are completed.

  10. Top physics results from CDF

    SciTech Connect (OSTI)

    Gomez, Gervasio; /Cantabria Inst. of Phys.

    2005-05-01

    The top quark is by far the most massive fundamental particle observed so far, and the study of its properties is interesting for several reasons ranging from its possible special role in electroweak symmetry breaking to its sensitivity to physics beyond the Standard Model. They present recent top physics results from CDF based on 160-320 pb{sup -1} of p{bar p} collision data at {radical}s = 1.96 TeV. The t{bar t} cross section and the top mass have been measured in different decay channels and using different methods. they have searched for evidence of single top production, setting upper limits on its production rate. Other results shown in this conference include studies of the polarization of W bosons from top decays, a search for charged Higgs decaying from top, and a search for additional heavy t' quarks.

  11. Cast Stone Oxidation Front Evaluation: Preliminary Results For Samples Exposed To Moist Air

    SciTech Connect (OSTI)

    Langton, C. A.; Almond, P. M.

    2013-11-26

    The rate of oxidation is important to the long-term performance of reducing salt waste forms because the solubility of some contaminants, e.g., technetium, is a function of oxidation state. TcO{sub 4}{sup ?} in the salt solution is reduced to Tc(IV) and has been shown to react with ingredients in the waste form to precipitate low solubility sulfide and/or oxide phases. Upon exposure to oxygen, the compounds containing Tc(IV) oxidize to the pertechnetate ion, Tc(VII)O{sub 4}{sup ?}, which is very soluble. Consequently the rate of technetium oxidation front advancement into a monolith and the technetium leaching profile as a function of depth from an exposed surface are important to waste form performance and ground water concentration predictions. An approach for measuring contaminant oxidation rate (effective contaminant specific oxidation rate) based on leaching of select contaminants of concern is described in this report. In addition, the relationship between reduction capacity and contaminant oxidation is addressed. Chromate (Cr(VI) was used as a non-radioactive surrogate for pertechnetate, Tc(VII), in Cast Stone samples prepared with 5 M Simulant. Cast Stone spiked with pertechnetate was also prepared and tested. Depth discrete subsamples spiked with Cr were cut from Cast Stone exposed to Savannah River Site (SRS) outdoor ambient temperature fluctuations and moist air. Depth discrete subsamples spiked with Tc-99 were cut from Cast Stone exposed to laboratory ambient temperature fluctuations and moist air. Similar conditions are expected to be encountered in the Cast Stone curing container. The leachability of Cr and Tc-99 and the reduction capacities, measured by the Angus-Glasser method, were determined for each subsample as a function of depth from the exposed surface. The results obtained to date were focused on continued method development and are preliminary and apply to the sample composition and curing / exposure conditions described in this report. The Cr oxidation front (depth to which soluble Cr was detected) for the Cast Stone sample exposed for 68 days to ambient outdoor temperatures and humid air (total age of sample was 131 days) was determined to be about 35 mm below the top sample surface exposed. The Tc oxidation front, depth at which Tc was insoluble, was not determined. Interpretation of the results indicates that the oxidation front is at least 38 mm below the exposed surface. The sample used for this measurement was exposed to ambient laboratory conditions and humid air for 50 days. The total age of the sample was 98 days. Technetium appears to be more easily oxidized than Cr in the Cast Stone matrix. The oxidized forms of Tc and Cr are soluble and therefore leachable. Longer exposure times are required for both the Cr and Tc spiked samples to better interpret the rate of oxidation. Tc spiked subsamples need to be taken further from the exposed surface to better define and interpret the leachable Tc profile. Finally Tc(VII) reduction to Tc(IV) appears to occur relatively fast. Results demonstrated that about 95 percent of the Tc(VII) was reduced to Tc(IV) during the setting and very early stage setting for a Cast Stone sample cured 10 days. Additional testing at longer curing times is required to determine whether additional time is required to reduce 100 % of the Tc(VII) in Cast Stone or whether the Tc loading exceeded the ability of the waste form to reduce 100 % of the Tc(VII). Additional testing is required for samples cured for longer times. Depth discrete subsampling in a nitrogen glove box is also required to determine whether the 5 percent Tc extracted from the subsamples was the result of the sampling process which took place in air. Reduction capacity measurements (per the Angus-Glasser method) performed on depth discrete samples could not be correlated with the amount of chromium or technetium leached from the depth discrete subsamples or with the oxidation front inferred from soluble chromium and technetium (i.e., effective Cr and Tc oxidation fronts). Residual reduction capacity

  12. Boosted top: experimental tools overview

    E-Print Network [OSTI]

    Emanuele Usai; for the ATLAS; CMS Collaborations

    2015-01-05

    An overview of tools and methods for the reconstruction of high-boost top quark decays at the LHC is given in this report. The focus is on hadronic decays, in particular an overview of the current status of top quark taggers in physics analyses is presented. The most widely used jet substructure techniques, normally used in combination with top quark taggers, are reviewed. Special techniques to treat pileup in large cone jets are described, along with a comparison of the performance of several boosted top quark reconstruction techniques.

  13. Keynote: Some remarks on top

    E-Print Network [OSTI]

    Werner Bernreuther

    2010-08-23

    A few key issues of present and future explorations of the physics of top quarks at the Tevatron and LHC are discussed.

  14. Gas turbine topping combustor

    DOE Patents [OSTI]

    Beer, J.; Dowdy, T.E.; Bachovchin, D.M.

    1997-06-10

    A combustor is described for burning a mixture of fuel and air in a rich combustion zone, in which the fuel bound nitrogen in converted to molecular nitrogen. The fuel rich combustion is followed by lean combustion. The products of combustion from the lean combustion are rapidly quenched so as to convert the fuel bound nitrogen to molecular nitrogen without forming NOx. The combustor has an air radial swirler that directs the air radially inward while swirling it in the circumferential direction and a radial fuel swirler that directs the fuel radially outward while swirling it in the same circumferential direction, thereby promoting vigorous mixing of the fuel and air. The air inlet has a variable flow area that is responsive to variations in the heating value of the fuel, which may be a coal-derived fuel gas. A diverging passage in the combustor in front of a bluff body causes the fuel/air mixture to recirculate with the rich combustion zone. 14 figs.

  15. Back Cover Front Cover Office of Continuing

    E-Print Network [OSTI]

    Goodman, Robert M.

    Back Cover Front Cover Office of Continuing Professional Education 2012­2013 Professional Landscape of Golf Course Irrigation Systems (p. 13) · Basics of Turf Management (p. 21) · Turfgrass Establishment (p

  16. Light front Casimir effect at finite temperature

    E-Print Network [OSTI]

    P. L. M. Rodrigues; Silvana Perez; Danilo T. Alves; Van Sérgio Alves; Charles R. Silva

    2015-01-06

    The correct description of the standard Casimir effect for periodic boundary conditions via light front formalism implies in these conditions imposed at fixed Minkowski times [Almeida {\\it et al.} Phys. Rev. {\\bf D 87}, 065028 (2013); Chabysheva and Hiller, Phys. Rev. {\\bf D 88}, 085006 (2013)] instead of fixed light front times. The unphysical nature of this latter condition is manifested in the vacuum part by no regularization yielding a finite Casimir energy density [Lenz and Steinbacher, Phys. Rev. {\\bf D 67}, 045010 (2003)]. In the present paper, we extend this discussion and analyze the problem of the light front quantization with simultaneous presence of a thermal bath and boundary conditions. Considering both the oblique light front as well as Dirac light front coordinates, we show that the imposition of periodic boundary conditions at fixed Minkowski times recovers the expected behaviors for the energy density and Casimir entropy. We also investigate how the unphysical nature of the periodic boundary conditions imposed at fixed light front times manifests in the thermal part of the energy and entropy, showing that in the classical limit the Casimir entropy decreases linearly with the temperature (not becoming independent of the temperature as expected), and also that the Kirchhoff theorem is not respected.

  17. Top Quark Properties from Top Pair Events and Decays

    E-Print Network [OSTI]

    Andrew G. Ivanov; for the CDF; Dzero Collaborations

    2008-10-19

    Over a decade since the discovery of the top quark we are still trying to unravel mysteries of the heaviest observed particle and learn more about its nature. The continuously accumulating statistics of CDF and Dzero data provide the means for measuring top quark properties with ever greater precision and the opportunity to search for signs of new physics that could be manifested through subtle deviations from the standard model in the production and decays of top quarks. In the following we present a slice of the rich program in top quark physics at the Fermilab Tevatron: measurements of the properties of top quark decays and searches for unusual phenomena in events with pair produced tops. In particular, we discuss the most recent and precise CDF and Dzero measurements of the transverse polarization of W bosons from top decays, branching ratios and searches for flavor-changing neutral current decays, decays into charged Higgs and invisible decays. These analyses correspond to integrated luminosities ranging from 0.9 to 2.7 inv. fb.

  18. Developments on the CENS Structural Health Monitoring Front

    E-Print Network [OSTI]

    2009-01-01

    on the CENS Structural Health Monitoring Front D. Skolnik,Introduction: Structural Health Monitoring (SHM) Systems

  19. Developments on the CENS Structural Health Monitoring Front

    E-Print Network [OSTI]

    2007-01-01

    on the CENS Structural Health Monitoring Front D. Skolnik,Introduction: Structural Health Monitoring (SHM) Systems

  20. QCD and Light-Front Dynamics

    SciTech Connect (OSTI)

    Brodsky, Stanley J.; de Teramond, Guy F.; /SLAC /Southern Denmark U., CP3-Origins /Costa Rica U.

    2011-01-10

    AdS/QCD, the correspondence between theories in a dilaton-modified five-dimensional anti-de Sitter space and confining field theories in physical space-time, provides a remarkable semiclassical model for hadron physics. Light-front holography allows hadronic amplitudes in the AdS fifth dimension to be mapped to frame-independent light-front wavefunctions of hadrons in physical space-time. The result is a single-variable light-front Schroedinger equation which determines the eigenspectrum and the light-front wavefunctions of hadrons for general spin and orbital angular momentum. The coordinate z in AdS space is uniquely identified with a Lorentz-invariant coordinate {zeta} which measures the separation of the constituents within a hadron at equal light-front time and determines the off-shell dynamics of the bound state wavefunctions as a function of the invariant mass of the constituents. The hadron eigenstates generally have components with different orbital angular momentum; e.g., the proton eigenstate in AdS/QCD with massless quarks has L = 0 and L = 1 light-front Fock components with equal probability. Higher Fock states with extra quark-anti quark pairs also arise. The soft-wall model also predicts the form of the nonperturbative effective coupling and its {beta}-function. The AdS/QCD model can be systematically improved by using its complete orthonormal solutions to diagonalize the full QCD light-front Hamiltonian or by applying the Lippmann-Schwinger method to systematically include QCD interaction terms. Some novel features of QCD are discussed, including the consequences of confinement for quark and gluon condensates. A method for computing the hadronization of quark and gluon jets at the amplitude level is outlined.

  1. Status of the top quark: Top production cross section and top properties

    SciTech Connect (OSTI)

    Boisvert, V.; /Rochester U.

    2006-08-01

    This report describes the latest cross section and property measurements associated with the top quark at the Tevatron Run II. The largest data sample used is 760 pb{sup -1} of integrated luminosity. Due to its large mass, the top quark might be involved in the process of electroweak symmetry breaking, making it a useful probe for signs of new physics.

  2. Googling the Top Two: Information Search in California’s Top Two Primary

    E-Print Network [OSTI]

    Sinclair, Betsy; Wray, Michael

    2015-01-01

    more as a consequence of the top two primary. ReferencesAssessing California’s Top-Two Primary and RedistrictingGoogling the Top Two: Information Search in California’s Top

  3. On Bulk Loading TPR-Tree Bin Lin and Jianwen Su

    E-Print Network [OSTI]

    Su, Jianwen

    a histogram-based bottom up algorithm (HBU) along with a modified top-down greedy split algo- rithm (TGS show that HBU outperforms both TPR and TGS for all kinds of non-uniform datasets, is relatively stable and compare it with the original TPR- tree bulk loading algorithm and a modified top-down greedy split (TGS

  4. Load Management for Industry 

    E-Print Network [OSTI]

    Konsevick, W. J., Jr.

    1982-01-01

    categories: Thermal Energy Storage, Communication and Load Control, Interconnection and Operation of Power Systems, and Selective Load Promotions. The endeavors of the utility industry and Ohio Edison Company in three of the four categories are described...

  5. SW New Mexico Oil Well Formation Tops

    SciTech Connect (OSTI)

    Shari Kelley

    2015-10-21

    Rock formation top picks from oil wells from southwestern New Mexico from scout cards and other sources. There are differing formation tops interpretations for some wells, so for those wells duplicate formation top data are presented in this file.

  6. The Top Two: Too Soon to Tell

    E-Print Network [OSTI]

    Valentine, Zabrae

    2015-01-01

    The Top Two: Too Soon to Tell Zabrae Valentine Until just aRedistricting Commission, no Top Two, no loosening of thefirm conclusions until the Top Two has had time to take

  7. Top quark physics expectations at the LHC

    E-Print Network [OSTI]

    Gaponenko, Andrei; ATLAS Collaboration; CMS Collaboration

    2008-01-01

    Physics Analysis Summary TOP 08 005. ATLAS Collaboration,Note 2006/013. E. W. Varnes, Top Physics plenary talk, thismass in the ATLAS cuts based top mass analysis with 1fb ?1

  8. Introduction: The California Top Two Primary

    E-Print Network [OSTI]

    Sinclair, Betsy

    2015-01-01

    with the adoption of the top two primary, and we lookIntroduction: The California Top Two Primary Betsy Sinclairfrequently asserted that the “top-two” would produce more

  9. The Top Two Runoff – An Assessment

    E-Print Network [OSTI]

    Quinn, Tony

    2015-01-01

    The Top Two Runoff – An Assessment Tony Quinn The mosts new open primary and Top Two general election is that allvery real impact of the new Top Two runoff – legislators who

  10. Load sensing system

    DOE Patents [OSTI]

    Sohns, Carl W. (Oak Ridge, TN); Nodine, Robert N. (Knoxville, TN); Wallace, Steven Allen (Knoxville, TN)

    1999-01-01

    A load sensing system inexpensively monitors the weight and temperature of stored nuclear material for long periods of time in widely variable environments. The system can include an electrostatic load cell that encodes weight and temperature into a digital signal which is sent to a remote monitor via a coaxial cable. The same cable is used to supply the load cell with power. When multiple load cells are used, vast

  11. Dark decay of Top quark

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

    Kong, Kyoungchui [Kansas; Lee, Hye-Sung [W&M, JLAB; Park, Myeonhun [Tokyo

    2014-04-01

    We suggest top quark decays as a venue to search for light dark force carriers. Top quark is the heaviest particle in the standard model whose decays are relatively poorly measured, allowing sufficient room for exotic decay modes from new physics. A very light (GeV scale) dark gauge boson (Z') is a recently highlighted hypothetical particle that can address some astrophysical anomalies as well as the 3.6 ? deviation in the muon g-2 measurement. We present and study a possible scenario that top quark decays as t ? b W + Z's. This is the same as the dominant top quark decay (t ? b W) accompanied by one or multiple dark force carriers. The Z' can be easily boosted, and it can decay into highly collimated leptons (lepton-jet) with large branching ratio. We discuss the implications for the Large Hadron Collider experiments including the analysis based on the lepton-jets.

  12. The Top Mathematics Florin Diacu

    E-Print Network [OSTI]

    Diacu, Florin

    top award, the Fields Medal, bears the name of a Canadian. In 1896, the Swedish inventor Al- fred, the inventor of dynamite, loved chemistry and physics. Literature was his great passion; in spite of a busy

  13. Top-quark production measurements

    E-Print Network [OSTI]

    Markus Cristinziani

    2015-11-13

    Recent measurements of top-quark production at hadron colliders are reviewed. The inclusive top-quark pair production is determined at four centre-of-mass energies at Tevatron and LHC with experimental uncertainties that are close to the uncertainties in theoretical calculations at next-to-next-to-leading order in QCD. Several differential measurements are performed and compared to simulation. Production of single top quarks is studied in the three different production channels. Top-quark pair production with neutral and charged vector bosons has been observed by the LHC experiments. Finally, production of additional heavy flavour quark pairs ($b\\bar{b}$, $t\\bar{t}$) is studied or searched for.

  14. Unvented, Conditioned Attics - Building America Top Innovation...

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

    Unvented, Conditioned Attics - Building America Top Innovation Unvented, Conditioned Attics - Building America Top Innovation This photo shows an attic that is conditioned...

  15. LANL named 2010 top corporate volunteer organization

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

    2010 top corporate volunteer organization LANL named 2010 top corporate volunteer organization The Laboratory ranked ahead of dozens of other qualifying companies with 10,000 or...

  16. Basement Insulation Systems - Building America Top Innovation...

    Office of Environmental Management (EM)

    Basement Insulation Systems - Building America Top Innovation Basement Insulation Systems - Building America Top Innovation This photo shows a framed basement wall with insulation...

  17. Uncovering the single top: observation of electroweak top quark production

    SciTech Connect (OSTI)

    Benitez, Jorge Armando; /Michigan State U.

    2009-08-01

    The top quark is generally produced in quark and anti-quark pairs. However, the Standard Model also predicts the production of only one top quark which is mediated by the electroweak interaction, known as 'Single Top'. Single Top quark production is important because it provides a unique and direct way to measure the CKM matrix element V{sub tb}, and can be used to explore physics possibilities beyond the Standard Model predictions. This dissertation presents the results of the observation of Single Top using 2.3 fb{sup -1} of Data collected with the D0 detector at the Fermilab Tevatron collider. The analysis includes the Single Top muon+jets and electron+jets final states and employs Boosted Decision Tress as a method to separate the signal from the background. The resulting Single Top cross section measurement is: (1) {sigma}(p{bar p} {yields} tb + X, tqb + X) = 3.74{sub -0.74}{sup +0.95} pb, where the errors include both statistical and systematic uncertainties. The probability to measure a cross section at this value or higher in the absence of signal is p = 1.9 x 10{sup -6}. This corresponds to a standard deviation Gaussian equivalence of 4.6. When combining this result with two other analysis methods, the resulting cross section measurement is: (2) {sigma}(p{bar p} {yields} tb + X, tqb + X) = 3.94 {+-} 0.88 pb, and the corresponding measurement significance is 5.0 standard deviations.

  18. Steady-state propagation speed of rupture fronts along 1D frictional interfaces

    E-Print Network [OSTI]

    Amundsen, David Skålid; Thøgersen, Kjetil; Katzav, Eytan; Malthe-Sørenssen, Anders; Scheibert, Julien

    2015-01-01

    The rupture of dry frictional interfaces occurs through the propagation of fronts breaking the contacts at the interface. Recent experiments have shown that the velocities of these rupture fronts range from quasi-static velocities proportional to the external loading rate to velocities larger than the shear wave speed. The way system parameters influence front speed is still poorly understood. Here we study steady-state rupture propagation in a 1D spring-block model of an extended frictional interface, for various friction laws. With the classical Amontons--Coulomb friction law, we derive a closed-form expression for the steady-state rupture velocity as a function of the interfacial shear stress just prior to rupture. We then consider an additional shear stiffness of the interface and show that the softer the interface, the slower the rupture fronts. We provide an approximate closed form expression for this effect. We finally show that adding a bulk viscosity on the relative motion of blocks accelerates stead...

  19. Energy deposition update Front End phone meeting

    E-Print Network [OSTI]

    McDonald, Kirk

    Energy deposition update P. Snopok Front End phone meeting March 31, 2015 #12;MARS · Modified geometry is strongly desired · Energy change is via RF kick at the center of the cavity ­ MARS invokes in ICOOL/G4beamline · How thick the beampipe and shielding around (if any) should be ­ energy deposition

  20. ibm.com/redbooks Front cover

    E-Print Network [OSTI]

    Westall, James M.

    ibm.com/redbooks Front cover IBM XIV Storage System: Architecture, Implementation, and Usage Organization IBM XIV Storage System: Architecture, Implementation, and Usage September 2009 SG24-7659-01 #12 with IBM Corp. Second Edition (September 2009) This edition applies to Version 10, Release 1, of the XIV

  1. ibm.com/redbooks Front cover

    E-Print Network [OSTI]

    Hickman, Mark

    ibm.com/redbooks Front cover IBM System Blue Gene Solution: Application Development Gary L. Mullen Organization IBM System Blue Gene Solution: Application Development June 2007 SG24-7179-04 #12;© Copyright Restricted Rights -- Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp

  2. On the fate of the Antarctic Slope Front and the origin of the Weddell Front

    E-Print Network [OSTI]

    Naveira Garabato, Alberto

    Oceanography: Physical: Fronts and jets; 4532 Oceanography: Physical: General circulation; 4536 Oceanography: Physical: Hydrography; 4207 Oceanography: General: Arctic and Antarctic oceanography; 4223 Oceanography: General: Descriptive and regional oceanography; KEYWORDS: topographic interaction, Weddell Scotia

  3. Front-end electronics and trigger systems - status and challenges

    E-Print Network [OSTI]

    Spieler, Helmuth G

    2008-01-01

    of the 12th Workshop on Electronics For LHC and Future19-24, 2007 Front-end electronics and trigger systems –about a revolution in front-end electronics for large- scale

  4. Dark decay of Top quark

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

    Kong, Kyoungchui; Lee, Hye-Sung; Park, Myeonhun

    We suggest top quark decays as a venue to search for light dark force carriers. Top quark is the heaviest particle in the standard model whose decays are relatively poorly measured, allowing sufficient room for exotic decay modes from new physics. A very light (GeV scale) dark gauge boson (Z') is a recently highlighted hypothetical particle that can address some astrophysical anomalies as well as the 3.6 ? deviation in the muon g-2 measurement. We present and study a possible scenario that top quark decays as t ? b W + Z's. This is the same as the dominant topmore »quark decay (t ? b W) accompanied by one or multiple dark force carriers. The Z' can be easily boosted, and it can decay into highly collimated leptons (lepton-jet) with large branching ratio. We discuss the implications for the Large Hadron Collider experiments including the analysis based on the lepton-jets.« less

  5. Top Quark Production at the Tevatron Collider

    E-Print Network [OSTI]

    Liang Li

    2011-07-21

    Top quark physics has been a rich testing ground for the standard model since the top quark discovery in 1995. The large mass of top quark suggests that it could play a special role in searches for new phenomena. In this paper I provide an overview of recent top quark production cross section measurements from both CDF and D0 collaborations and also some new physics searches done in the top quark sector.

  6. Load regulating expansion fixture

    DOE Patents [OSTI]

    Wagner, L.M.; Strum, M.J.

    1998-12-15

    A free standing self contained device for bonding ultra thin metallic films, such as 0.001 inch beryllium foils is disclosed. The device will regulate to a predetermined load for solid state bonding when heated to a bonding temperature. The device includes a load regulating feature, whereby the expansion stresses generated for bonding are regulated and self adjusting. The load regulator comprises a pair of friction isolators with a plurality of annealed copper members located therebetween. The device, with the load regulator, will adjust to and maintain a stress level needed to successfully and economically complete a leak tight bond without damaging thin foils or other delicate components. 1 fig.

  7. HLW Glass Waste Loadings

    Office of Environmental Management (EM)

    HLW Glass Waste Loadings Ian L. Pegg Vitreous State Laboratory The Catholic University of America Washington, DC Overview Overview Vitrification - general background Joule...

  8. Load sensing system

    DOE Patents [OSTI]

    Sohns, C.W.; Nodine, R.N.; Wallace, S.A.

    1999-05-04

    A load sensing system inexpensively monitors the weight and temperature of stored nuclear material for long periods of time in widely variable environments. The system can include an electrostatic load cell that encodes weight and temperature into a digital signal which is sent to a remote monitor via a coaxial cable. The same cable is used to supply the load cell with power. When multiple load cells are used, vast inventories of stored nuclear material can be continuously monitored and inventoried of minimal cost. 4 figs.

  9. Load regulating expansion fixture

    DOE Patents [OSTI]

    Wagner, Lawrence M. (San Jose, CA); Strum, Michael J. (San Jose, CA)

    1998-01-01

    A free standing self contained device for bonding ultra thin metallic films, such as 0.001 inch beryllium foils. The device will regulate to a predetermined load for solid state bonding when heated to a bonding temperature. The device includes a load regulating feature, whereby the expansion stresses generated for bonding are regulated and self adjusting. The load regulator comprises a pair of friction isolators with a plurality of annealed copper members located therebetween. The device, with the load regulator, will adjust to and maintain a stress level needed to successfully and economically complete a leak tight bond without damaging thin foils or other delicate components.

  10. Developments on the CENS Structural Health Monitoring Front (SEI 2)

    E-Print Network [OSTI]

    2006-01-01

    on the CENS Structural Health Monitoring Front M. Kohler, J.framework for structural health monitoring (SHM). hea lth

  11. Measurement of nonlinear index by a relay-imaged top-hat Z-scan technique

    SciTech Connect (OSTI)

    Shimada, T.; Kurnit, N.A.; Sheik-Bahae, M.

    1996-04-01

    Measurements of the nonlinear index of a number of optical materials of interest for the National Ignition Facility have been performed at 1,064 nm and 355 nm by a modified version of the ``top-hat`` technique and the results compared with the more standard gaussian-beam Z-scan technique. The top-hat technique has the advantages of higher sensitivity and smaller uncertainties introduced by beam-quality considerations. The authors have made what they feel to be an additional improvement by placing the defining aperture for the top hat at the front focal plane of the lens that focuses the beam into the sample and then reimaging the input aperture with a second lens onto a ccd camera. Reimaging eliminates diffraction fringes and provides a stationary image even for a wedged sample; recording the entire image permits minimization of spurious effects such as varying interference fringes.

  12. FSP Index Top Performing Schools http://www.academicanalytics.com/TopSchools/TopSchools.aspx 1 of 3 2/12/2008 5:13 PM

    E-Print Network [OSTI]

    Tesanovic, Zlatko

    FSP Index Top Performing Schools http://www.academicanalytics.com/TopSchools/TopSchools.aspx 1 of 3 2/12/2008 5:13 PM Tuesday, February 12, 2008 | 5:13 PM EST FSP Index Top Performing Schools 2006 University of Iowa Brown University #12;FSP Index Top Performing Schools http://www.academicanalytics.com/TopSchools/TopSchools

  13. Top Quark: discovery, present and future Galtieri, The Top Quark, PDG 50th

    E-Print Network [OSTI]

    Galtieri, Lina

    1 Top Quark: discovery, present and future Galtieri, The Top Quark, PDG 50th Anniversary. September 23-2006 #12;Chasing the Top Quark 2 Gell-Mann, Zweig uds quarks postulated ('64) GIM mechanism at FNAL 1984 PDG partial listing top should exist Searches at Tristan, PETRA, SPPS, SLC : top not found

  14. Top 100 historical figures of Wikipedia 1 Top 100 historical figures of Wikipedia

    E-Print Network [OSTI]

    Shepelyansky, Dima

    Top 100 historical figures of Wikipedia 1 Top 100 historical figures of Wikipedia The top 100 papers. In the statistical respects this top 100 list is of differs from the historical, cultural grounds of those approaches they have overlap of about 43 percent with the top 100 list of Hart

  15. Tracking the Salt Front Page 1 Name __________________________________________ Date____________________

    E-Print Network [OSTI]

    Lance, Veronica P.

    , moving the salt front inland. Scientists track the salt front using Hudson River Miles, abbreviated HRM, is HRM 0. The George Washington Bridge is at HRM 12, the city of Kingston at HRM 91. Ocean tides reach the Federal Dam in Troy at HRM 153. Using the graph "Hudson River Salt Front: Average Location by Month

  16. Light-front chiral effective field theory

    SciTech Connect (OSTI)

    Mathiot, J.-F. [Laboratoire de Physique Corpusculaire (France)] [Laboratoire de Physique Corpusculaire (France); Tsirova, N. A., E-mail: ntsirova@ssu.samara.ru [Samara State University (Russian Federation)

    2013-11-15

    We propose a general framework to calculate the nonperturbative structure of relativistic bound state systems. The state vector of the bound state is calculated in the covariant formulation of light-front dynamics. In this scheme, the state vector is defined on the light front of general position {omega} {center_dot} x = 0, where {omega} is an arbitrary light-like four-vector. This enables a strict control of any violation of rotational invariance. The state vector is then decomposed in Fock components. Our formalism is applied to the description of the nucleon properties at low energy, in chiral perturbation theory. We also show that the use of a recently proposed regularization scheme, the so-called Taylor-Lagrange regularization scheme, is very adequate in order to treat divergences in this nonperturbative framework.

  17. Front contact solar cell with formed emitter

    SciTech Connect (OSTI)

    Cousins, Peter John

    2014-11-04

    A bipolar solar cell includes a backside junction formed by an N-type silicon substrate and a P-type polysilicon emitter formed on the backside of the solar cell. An antireflection layer may be formed on a textured front surface of the silicon substrate. A negative polarity metal contact on the front side of the solar cell makes an electrical connection to the substrate, while a positive polarity metal contact on the backside of the solar cell makes an electrical connection to the polysilicon emitter. An external electrical circuit may be connected to the negative and positive metal contacts to be powered by the solar cell. The positive polarity metal contact may form an infrared reflecting layer with an underlying dielectric layer for increased solar radiation collection.

  18. Front contact solar cell with formed emitter

    DOE Patents [OSTI]

    Cousins, Peter John (Menlo Park, CA)

    2012-07-17

    A bipolar solar cell includes a backside junction formed by an N-type silicon substrate and a P-type polysilicon emitter formed on the backside of the solar cell. An antireflection layer may be formed on a textured front surface of the silicon substrate. A negative polarity metal contact on the front side of the solar cell makes an electrical connection to the substrate, while a positive polarity metal contact on the backside of the solar cell makes an electrical connection to the polysilicon emitter. An external electrical circuit may be connected to the negative and positive metal contacts to be powered by the solar cell. The positive polarity metal contact may form an infrared reflecting layer with an underlying dielectric layer for increased solar radiation collection.

  19. Pentan isomers compound flame front structure

    SciTech Connect (OSTI)

    Mansurov, Z.A.; Mironenko, A.W.; Bodikov, D.U.; Rachmetkaliev, K.N.

    1995-08-13

    The fuels (hexane, pentane, diethyl ether) and conditions investigated in this study are relevant to engine knock in spark- ignition engines. A review is provided of the field of low temperature hydrocarbon oxidation. Studies were made of radical and stable intermediate distribution in the front of cool flames: Maximum concentrations of H atoms and peroxy radicals were observed in the luminous zone of the cool flame front. Peroxy radicals appear before the luminous zone at 430 K due to diffusion. H atoms were found in cool flames of butane and hexane. H atoms diffuses from the luminous zone to the side of the fresh mixture, and they penetrate into the fresh mixture to a small depth. Extension of action sphear of peroxy radicals in the fresh mixture is much greater than that of H atoms due to their small activity and high concentrations.

  20. Top-Working Pecan Trees. 

    E-Print Network [OSTI]

    Kyle, E. J.

    1916-01-01

    - ducing satisfactory crops of nuts. 2. When plantings of named varieties have not proven a com- mercial success in certain sections; 3. When a person who understands propagating the pecan desires to plant seed where the trees are to stand and top...

  1. Front-lighted shadowgraphic method and apparatus

    SciTech Connect (OSTI)

    Not Available

    1982-02-11

    High contrast silhouette images of a substantially opaque object are obtained using front illumination techniques. The object is frontally illuminated by light of a first polarization. A frontal surface of the object reflects the incident light to an observation station. The polarization of incident light bypassing the object and incident on a background is changed. The background light is reflected to the observation station, and the intensity of one of the two, differently polarized, reflected images is substantially reduced with respect to the other. Apparatus for carrying out the method includes a first polarizer for polarizing frontally incident illuminating light, a second polarizer behind the object and a reflective surface behind the second polarizer. A polarization analyzer, located in front of the object, is used to extinguish one of the two reflected images. Apparatus for carrying out the invention in instruments having a polarized light source and a polarization analyzer includes a combination of a polarizing material, for contacting a rear surface of the object, and a reflective surface provided adjacent the rear surface of the polarizing material. The combination is applied to the rear surface of the object. Back-surface mirrors of pleochroic substrates, applied to thin film physical vapor-deposited electronic circuit elements, enable front lighted shadow-graphic imaging of the elements.

  2. Top-Quark Physics Results From LHC

    E-Print Network [OSTI]

    Luca Fiorini

    2012-01-30

    The top-quark is a fundamental element of the physics program at the Large Hadron Collider (LHC). We review the current status of the top-quark measurements performed by ATLAS and CMS experiments in pp collisions at sqrt(s)=7 TeV by presenting the recent results of the top-quark production rates, top mass measurements and additional top quark properties. We will also describe the recent searches for physics beyond the Standard Model in the top-quark sector.

  3. Recent Top Properties Measurements at CDF

    E-Print Network [OSTI]

    Giorgio Chiarelli

    2014-10-09

    We present the most recent CDF results in the measurements of the decay and production vertex of the top-quark. New results on forward-backward asymmetry in top-antitop events are presented. Also, recent measurements of the branching fractions of top-quark are discussed. Finally, measurements in single top events, where top-quark is produced through electroweak processes, are presented. Despite the much larger number of top events collected at the LHC, due to the symmetric initial state and the better signal-to-background ratio in specific channels, some results will be lasting heritage of the Tevatron.

  4. Top quark studies at hadron colliders

    SciTech Connect (OSTI)

    Sinervo, P.K. [Univ. of Toronto, Ontario (Canada)

    1997-01-01

    The techniques used to study top quarks at hadron colliders are presented. The analyses that discovered the top quark are described, with emphasis on the techniques used to tag b quark jets in candidate events. The most recent measurements of top quark properties by the CDF and DO Collaborations are reviewed, including the top quark cross section, mass, branching fractions, and production properties. Future top quark studies at hadron colliders are discussed, and predictions for event yields and uncertainties in the measurements of top quark properties are presented.

  5. A loaded thermoacoustic engine

    SciTech Connect (OSTI)

    Olson, J.R.; Swift, G.W.

    1995-11-01

    Measurements and analysis of the performance of a thermoacoustic engine driving a dissipative load are presented. The effect of the load can be explained qualitatively using a simple low-amplitude approximation and quantitatively by invoking a more accurate low-amplitude numerical solution. The heater power {ital @};DQ and hot-end temperature {ital T}{sub {ital H}} are found to be simple functions of the load impedance and the unloaded values of {ital @};DQ and {ital T}{sub {ital H}}. {copyright} {ital 1995} {ital Acoustical} {ital Society} {ital of} {ital America}.

  6. Load research manual. Volume 3. Load research for advanced technologies

    SciTech Connect (OSTI)

    Brandenburg, L.; Clarkson, G.; Grund, Jr., C.; Leo, J.; Asbury, J.; Brandon-Brown, F.; Derderian, H.; Mueller, R.; Swaroop, R.

    1980-11-01

    This three-volume manual presents technical guidelines for electric utility load research. Special attention is given to issues raised by the load data reporting requirements of the Public Utility Regulatory Policies Act of 1978 and to problems faced by smaller utilities that are initiating load research programs. The manual includes guides to load research literature and glossaries of load research and statistical terms. In Volume 3, special load research procedures are presented for solar, wind, and cogeneration technologies.

  7. Top partner probes of extended Higgs sectors

    E-Print Network [OSTI]

    Kearney, John

    Natural theories of the weak scale often include fermionic partners of the top quark. If the electroweak symmetry breaking sector contains scalars beyond a single Higgs doublet, then top partners can have sizable branching ...

  8. Top 10 FAQs | Department of Energy

    Energy Savers [EERE]

    Top 10 FAQs Top 10 FAQs Is my project eligible for a DOE loan guarantee? The Department considers project applications that have been submitted in compliance with an open...

  9. Top quark physics at the LHC

    E-Print Network [OSTI]

    Werner Bernreuther

    2008-05-09

    The physics perspectives of the production and decay of single top quarks and top quark pairs at the CERN Large Hadron Collider (LHC) are reviewed from a phenomenological point of view.

  10. Top quark physics expectations at the LHC

    E-Print Network [OSTI]

    Gaponenko, Andrei; ATLAS Collaboration; CMS Collaboration

    2008-01-01

    Science, O?ce of High Energy Physics, of the U.S. Department05CH11231. References CMS Physics Analysis Summary TOP 08Note 2006/013. E. W. Varnes, Top Physics plenary talk, this

  11. Theory of top quark production and decay

    SciTech Connect (OSTI)

    Kuehn, J.H. [Universitaet Karlsruhe (Germany)

    1997-01-01

    Direct and indirect information on the top quark mass and its decay modes is reviewed. The theory of top production in hadron- and electron-positron-colliders is presented.

  12. Top Quark Production at the LHC

    E-Print Network [OSTI]

    Francesco Spanò; for the ATLAS; CMS collaborations

    2011-12-16

    Top quark production in proton proton collisions at the Large Hadron Collider (LHC) is reviewed using data collected by the ATLAS and CMS detectors. Most recent results on searches for new physics related to top quark production mechanism are included.

  13. Single Top production at CMS

    E-Print Network [OSTI]

    Thomas Speer

    2011-10-11

    A first measurement of the cross section of single top quark production in the t channel in pp collision at sqrt(s)=7 TeV is presented. The measurement is performed on a data sample corresponding to an integrated luminosity of 35.9 pb^-1 recorded at the LHC with the CMS detector. Leptonic decay channels with an electron or a muon in the final state are considered. After a selection optimized for the t-channel mode, two different and complementary analyses have been performed. Both analyses confirm the Tevatron's observation of single top, and their combination measures a cross section of sigma = 83.6 +/- 29.8(stat.+syst.) +/- 3.3 (lumi.) pb, which is consistent with the Standard Model prediction.

  14. Top decays in extended models

    SciTech Connect (OSTI)

    Gaitan, R.; Miranda, O. G.; Cabral-Rosetti, L. G.

    2009-04-20

    Top quark decays are interesting as a mean to test the Standard Model (SM) predictions. The Cabbibo-Kobayashi-Maskawa (CKM)-suppressed process t{yields}cWW, and the rare decays t{yields}cZ, t{yields}H{sup 0}+c, and t{yields}c{gamma} an excellent window to probe the predictions of theories beyond the SM. We evaluate the flavor changing neutral currents (FCNC) decay t{yields}H{sup 0}+c in the context of Alternative Left-Right symmetric Models (ALRM) with extra isosinglet heavy fermions; the FCNC decays may place at tree level and are only supressed by the mixing between ordinary top and charm quarks. We also comment on the decay process t{yields}c+{gamma}, which involves radiative corrections.

  15. Load Monitoring CEC/LMTF Load Research Program

    SciTech Connect (OSTI)

    Huang, Zhenyu; Lesieutre, B.; Yang, Steve; Ellis, A.; Meklin, A.; Wong, B.; Gaikwad, A.; Brooks, D.; Hammerstrom, Donald J.; Phillips, John; Kosterev, Dmitry; Hoffman, M.; Ciniglio, O.; Hartwell, R.; Pourbeik, P.; Maitra, A.; Lu, Ning

    2007-11-30

    This white paper addresses the needs, options, current practices of load monitoring. Recommendations on load monitoring applications and future directions are also presented.

  16. Materials Technologies: Goals, Strategies, and Top Accomplishments

    SciTech Connect (OSTI)

    2010-08-02

    Fact sheet describing the goals, strategies, and top accomplishments of the Materials Technologies subprogram of the Vehicle Technologies Program.

  17. Top quark Physics at the Tevatron

    E-Print Network [OSTI]

    Yvonne Peters; for the CDF; D0 Collaborations

    2012-01-06

    When the heaviest elementary particle known today, the top quark, was discovered in 1995 by the CDF and D0 collaborations at the Fermilab Tevatron collider, a large program to study this particle in details has started. In this article, an overview of the status of top quark physics at the Tevatron is presented. In particular, recent results on top quark production, properties and searches using top quarks are discussed.

  18. Bay Front Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin: EnergyYorkColorado StateWind ProjectVillage,BatonFront Biomass

  19. FRONT BURNER - ISSUE 19 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12, 2015Executive Order14, 2011 CX-006821:forEnergyADVANCEDTO: Ex parteFRONT

  20. Top Tips for Accessing Oxford's Information Resources

    E-Print Network [OSTI]

    Oxford, University of

    Top Tips for Accessing Oxford's Information Resources And How Brasenose College Library Fits In #12, electronic journals and books Top Tip 1: Attend the Bodleian induction sessions for your subject #12;Oxford ­ departmental, faculty, college Top Tip 2: Explore smaller libraries ­ www

  1. Top quark measurement in the CDF

    E-Print Network [OSTI]

    Hyun Su Lee; for the CDF Collaboration

    2009-05-28

    We present recent top physics results in the CDF including updates of top mass, \\ttbar cross section, single top search, forward-backward asymmetry, and the differential cross section of \\ttbar. Most of measurements utilize close to the integrated luminosity of 3 fb$^{-1}$.

  2. Top quark physics expectations at the LHC

    E-Print Network [OSTI]

    Andrei Gaponenko; for the ATLAS Collaboration; for the CMS Collaboration

    2008-10-22

    The top quark will be produced copiously at the LHC. This will make both detailed physics studies and the use of top quark decays for detector calibration possible. This talk reviews plans and prospects for top physics activities in the ATLAS and CMS experiments.

  3. Top Tips for Accessing Oxford's Information Resources

    E-Print Network [OSTI]

    Oxford, University of

    Top Tips for Accessing Oxford's Information Resources And How Brasenose College Library Fits In #12, electronic journals and books Top Tip 1: Attend the induction session in your departmental library #12;Oxford ­ departmental, faculty, college Top Tip 2: Explore smaller libraries ­ www

  4. Top Mass Measurements at the Tevatron

    E-Print Network [OSTI]

    M. H. L. S. Wang

    2009-04-02

    We present the latest measurements of the top quark mass from the Tevatron. The different top decay channels and measurement techniques used for these results are also described. The world average of the top quark mass based on some of these new results combined with previous results is mtop=172.6+-1.4 GeV.

  5. Evaluation of repeated electrowetting on three different fluoropolymer top coatings

    E-Print Network [OSTI]

    Koo, B; Kim, CJ

    2013-01-01

    across the fluoropolymer top coating (calculated) divided bydifferent fluoropolymer top coatings Bonhye Koo 1,3 andpopular fluoropolymer top coatings: Teflon, FluoroPel and

  6. Building America Top Innovations Hall of Fame Profile - Building...

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

    Building America Top Innovations Hall of Fame Profile - Building America's Top Innovations Propel the Home Building Industry toward Higher Performance Building America Top...

  7. Top Management Involvement in the Adoption of Energy Efficiency Projects

    E-Print Network [OSTI]

    Blass, Vered; Corbett, Charles J.; Delmas, Magali A; Muthulingam, Suresh

    2011-01-01

    S. J. 1993. Selling Issues to Top Management. Academy ofD. 1992. Diversification Posture and Top Management Teamas A Reflection of Its Top Managers. Academy of Management

  8. Building America Top Innovations Hall of Fame Profile - Building...

    Energy Savers [EERE]

    Top Innovations Hall of Fame Profile - Building America's Top Innovations Propel the Home Building Industry toward Higher Performance Building America Top Innovations Hall of Fame...

  9. The "top player problem" Here are two solutions of the "top player" problem,

    E-Print Network [OSTI]

    Sussmann, Hector

    The "top player problem" Here are two solutions of the "top player" problem, IMPORTANT REMARK that every tournament has a top player. For this purpose, it suffices to prove that (*) For every natural number n, and every tournament t with n play- ers, t has a top player. (If we use T(t) for "t

  10. Fronts and fluctuations at a critical surface

    E-Print Network [OSTI]

    Haim Weissmann; Nadav M. Shnerb; David A. Kessler

    2015-08-14

    The properties of a front between two different phases in the presence of a smoothly inhomogeneous external field that takes its critical value at the crossing point is analyzed. Two generic scenarios are studied. In the first, the system admits a bistable solution and the external field governs the rate in which one phase invades the other. The second mechanism corresponds to a second order transition that, in the case of reactive systems, takes the form of a transcritical bifurcation at the crossing point. We solve for the front shape and its response to external white noise, showing that static properties and also some of the dynamics features cannot distinguish between the two scenarios. The only reliable indicator turns out to be the fluctuation statistics. These take a Gaussian form in the bifurcation case and a double-peak shape in a bistable system. The results of a recent analysis of the morphogenesis process in Drosophila embryos are reanalyzed and we show, in contrast with the interpretation suggested by Krotov et. al., that the plausible underlying dynamics is bistable and not bifurcational.

  11. Top physics at LHC with ttbar events

    E-Print Network [OSTI]

    F. Hubaut

    2006-05-10

    The new CERN proton-proton collider, the LHC, is about to start in 2007 its data taking. Millions of top quarks will be available out of these data, allowing to perform a wide range of precision measurements and searches for new physics. An overview of the planned top physics program accessible with ttbar events is given for the ATLAS and CMS experiments. A particular emphasis is put on the precision measurements of the top mass, top polarization and searches for new physics in top production and decay.

  12. Top Quark Physics at the Tevatron

    E-Print Network [OSTI]

    Frederic Deliot; Douglas Glenzinski

    2011-10-10

    We review the field of top-quark physics with an emphasis on experimental techniques. The role of the top quark in the Standard Model of particle physics is summarized and the basic phenomenology of top-quark production and decay is introduced. We discuss how contributions from physics beyond the Standard Model could affect top-quark properties or event samples. The many measurements made at the Fermilab Tevatron, which test the Standard Model predictions or probe for direct evidence of new physics using the top-quark event samples, are reviewed here.

  13. Top Quark Forward-Backward Asymmetry

    E-Print Network [OSTI]

    Kingman Cheung; Wai-Yee Keung; Tzu-Chiang Yuan

    2009-11-17

    The recent forward-backward asymmetry recorded by the CDF Collaboration for the top and anti-top quark pair production indicates more than $2\\sigma$ deviation from the Standard Model prediction, while its total production cross section remains consistent. We propose a $W'$ boson that couples to down and top quarks. We identify the parameter space that can give rise a large enough forward-backward asymmetry without producing too many top and anti-top quark pairs. Other models presented erstwhile in the literature that can produce such effects are also discussed.

  14. Top Quark Studies at D0

    E-Print Network [OSTI]

    R. Y. Peters

    2014-08-10

    Years after its discovery in 1995 by CDF and D0, the top quark still undergoes intense investigations at the Tevatron. Using up to the full Run~II data sample, new measurements of top quark production and properties by the D0 Collaboration are presented. In particular, the first observation of single top quark s-channel production, the measurement of differential ttbar distributions, forward-backward ttbar asymmetry, a new measurement of the top quark mass, and a measurement of the top quark charge are discussed.

  15. Top Quark Mass Measurements at the Tevatron

    E-Print Network [OSTI]

    Zhenyu Ye; for CDF; D0 collaborations

    2011-07-22

    We report the latest results on the top-quark mass and on the top-antitop mass difference from the CDF and D0 collaborations using data collected at the Fermilab Tevatron $p\\bar{p}$ collider at $\\sqrt{s}=1.96$ TeV. We discuss general issues in top-quark mass measurements and present new results from direct measurements and from top-pair production cross-section. We also report new results on the top-antitop mass difference.

  16. Front-runners in plant-microbe interactions.

    E-Print Network [OSTI]

    Ronald, Pamela C; Shirasu, Ken

    2012-01-01

    Front-runners in plant–microbe interactions Editorialwww.sciencedirect.com Plants and microbes, abundant in thedetermine if the associated microbes are friends or foes,

  17. Light-front representation of chiral dynamics in peripheral transverse...

    Office of Scientific and Technical Information (OSTI)

    for the peripheral transverse densities as overlap integrals of chiral light-front wave functions, describing the transition of the initial nucleon to soft pion-nucleon...

  18. Top transport in electroweak baryogenesis

    E-Print Network [OSTI]

    Lars Fromme; Stephan J. Huber

    2006-05-09

    In non-supersymmetric models of electroweak baryogenesis the top quark plays a crucial role. Its CP-violating source term can be calculated in the WKB approximation. We point out how to resolve certain discrepancies between computations starting from the Dirac equation and the Schwinger--Keldysh formalism. We also improve on the transport equations, keeping the W-scatterings at finite rate. We apply these results to a model with one Higgs doublet, augmented by dimension-6 operators, where our refinements lead to an increase in the baryon asymmetry by a factor of up to about 5.

  19. MHD Integrated Topping Cycle Project

    SciTech Connect (OSTI)

    Not Available

    1992-07-01

    This eighteenth quarterly technical progress report of the MHD Integrated Topping cycle Project presents the accomplishments during the period November 1, 1991 to January 31, 1992. The precombustor is fully assembled. Manufacturing of all slagging stage components has been completed. All cooling panels were welded in place and the panel/shell gap was filled with RTV. Final combustor assembly is in progress. The low pressure cooling subsystem (LPCS) was delivered to the CDIF. Second stage brazing issues were resolved. The construction of the two anode power cabinets was completed.

  20. Table-top job analysis

    SciTech Connect (OSTI)

    Not Available

    1994-12-01

    The purpose of this Handbook is to establish general training program guidelines for training personnel in developing training for operation, maintenance, and technical support personnel at Department of Energy (DOE) nuclear facilities. TTJA is not the only method of job analysis; however, when conducted properly TTJA can be cost effective, efficient, and self-validating, and represents an effective method of defining job requirements. The table-top job analysis is suggested in the DOE Training Accreditation Program manuals as an acceptable alternative to traditional methods of analyzing job requirements. DOE 5480-20A strongly endorses and recommends it as the preferred method for analyzing jobs for positions addressed by the Order.

  1. Top Innovative Science of 2013

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired Solar FuelTechnologyTel:FebruaryEIA's Today8 Things You Didn't » Top

  2. Top Science News of 2014

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired Solar FuelTechnologyTel:FebruaryEIA's Today8 Things You Didn'tTop

  3. Top Ten Innovations of 2013

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired Solar FuelTechnologyTel:FebruaryEIA's Today8 Things You Didn'tTop

  4. Seismic Loading for FAST: May 2011 - August 2011

    SciTech Connect (OSTI)

    Asareh, M. A.; Prowell, I.

    2012-08-01

    As more wind farms are constructed in seismically active regions, earthquake loading increases in prominence for design and analysis of wind turbines. Early investigation of seismic load tended to simplify the rotor and nacelle as a lumped mass on top of the turbine tower. This simplification allowed the use of techniques developed for conventional civil structures, such as buildings, to be easily applied to wind turbines. However, interest is shifting to more detailed models that consider loads for turbine components other than the tower. These improved models offer three key capabilities in consideration of base shaking for turbines: 1) The inclusion of aerodynamics and turbine control; 2) The ability to consider component loads other than just tower loads; and 3) An improved representation of turbine response in higher modes by reducing modeling simplifications. Both experimental and numerical investigations have shown that, especially for large modern turbines, it is important to consider interaction between earthquake input, aerodynamics, and operational loads. These investigations further show that consideration of higher mode activity may be necessary in the analysis of the seismic response of turbines. Since the FAST code is already capable of considering these factors, modifications were developed that allow simulation of base shaking. This approach allows consideration of this additional load source within a framework, the FAST code that is already familiar to many researchers and practitioners.

  5. Light-Front Holography, Light-Front Wavefunctions, and Novel QCD Phenomena

    SciTech Connect (OSTI)

    Brodsky, Stanley J.; /SLAC /Southern Denmark U., CP3-Origins; de Teramond, Guy F.; /Costa Rica U.

    2012-02-16

    Light-Front Holography is one of the most remarkable features of the AdS/CFT correspondence. In spite of its present limitations it provides important physical insights into the nonperturbative regime of QCD and its transition to the perturbative domain. This novel framework allows hadronic amplitudes in a higher dimensional anti-de Sitter (AdS) space to be mapped to frame-independent light-front wavefunctions of hadrons in physical space-time. The model leads to an effective confining light-front QCD Hamiltonian and a single-variable light-front Schroedinger equation which determines the eigenspectrum and the light-front wavefunctions of hadrons for general spin and orbital angular momentum. The coordinate z in AdS space is uniquely identified with a Lorentz-invariant coordinate {zeta} which measures the separation of the constituents within a hadron at equal light-front time and determines the off-shell dynamics of the bound-state wavefunctions, and thus the fall-off as a function of the invariant mass of the constituents. The soft-wall holographic model modified by a positive-sign dilaton metric, leads to a remarkable one-parameter description of nonperturbative hadron dynamics - a semi-classical frame-independent first approximation to the spectra and light-front wavefunctions of meson and baryons. The model predicts a Regge spectrum of linear trajectories with the same slope in the leading orbital angular momentum L of hadrons and the radial quantum number n. The hadron eigensolutions projected on the free Fock basis provides the complete set of valence and non-valence light-front Fock state wavefunctions {Psi}{sub n/H} (x{sub i}, k{sub {perpendicular}i}, {lambda}{sub i}) which describe the hadron's momentum and spin distributions needed to compute the direct measures of hadron structure at the quark and gluon level, such as elastic and transition form factors, distribution amplitudes, structure functions, generalized parton distributions and transverse momentum distributions. The effective confining potential also creates quark-antiquark pairs from the amplitude q {yields} q{bar q}q. Thus in holographic QCD higher Fock states can have any number of extra q{bar q} pairs. We discuss the relevance of higher Fock-states for describing the detailed structure of space and time-like form factors. The AdS/QCD model can be systematically improved by using its complete orthonormal solutions to diagonalize the full QCD light-front Hamiltonian or by applying the Lippmann-Schwinger method in order to systematically include the QCD interaction terms. A new perspective on quark and gluon condensates is also obtained.

  6. USDOE Top-of-Rail Lubricant Project

    SciTech Connect (OSTI)

    Mohumad F. Alzoubi; George R. Fenske; Robert A. Erck; Amrit S. Boparai

    2002-02-01

    Lubrication of wheel/rail systems has been recognized for the last two decades as a very important issue for railroads. Energy savings and less friction and wear can be realized if a lubricant can be used at the wheel/rail interface. On the other hand, adverse influences are seen in operating and wear conditions if improper or excessive lubrication is used. Also, inefficiencies in lubrication need to be avoided for economic and environmental reasons. The top-of-rail (TOR) lubricant concept was developed by Texaco Corporation to lubricate wheels and rails effectively and efficiently. Tranergy Corporation has been developing its SENTRAEN 2000{trademark} lubrication system for the last ten years, and this revolutionary new high-tech on-board rail lubrication system promises to dramatically improve the energy efficiency, performance, safety, and track environment of railroads. The system is fully computer-controlled and ensures that all of the lubricant is consumed as the end of the train passes. Lubricant quantity dispensed is a function of grade, speed, curve, and axle load. Tranergy also has its LA4000{trademark} wheel and rail simulator, a lubrication and traction testing apparatus. The primary task of this project was collecting and analyzing the volatile and semivolatile compounds produced as the lubricant was used. The volatile organic compounds were collected by Carbotrap cartridges and analyzed by adsorption and gas chromatography/mass spectrometry (GC/MS). The semivolatile fraction was obtained by collecting liquid that dripped from the test wheel. The collected material was also analyzed by GC/MS. Both of these analyses were qualitative. The results indicated that in the volatile fraction, the only compounds on the Environmental Protection Agency's (EPA) Superfund List of Analytes detected were contaminants either in the room air or from other potential contamination sources in the laboratory. Similarly, in the semivolatile fraction none of the detected compounds are on the EPA's Superfund List of Analytes. The major compound in the semivolatile fraction is 1,2-propanediol, which was also found as the major component of the TOR lubricant before testing. Other compounds found in trace quantities either were present in the TOR lubricant or were small fragments from the polymeric component of the TOR lubricant. The second task for Argonne in this project was to investigate the effects of axle load, angle of attack, and quantity of lubricant on lateral friction forces, as well as the consumption time of the TOR lubricant. The second task was to collect and qualitatively identify any volatile and semivolatile compounds produced upon use of the TOR lubricant.

  7. MHD Integrated Topping Cycle Project

    SciTech Connect (OSTI)

    Not Available

    1992-03-01

    The Magnetohydrodynamics (MHD) Integrated Topping Cycle (ITC) Project represents the culmination of the proof-of-concept (POC) development stage in the US Department of Energy (DOE) program to advance MHD technology to early commercial development stage utility power applications. The project is a joint effort, combining the skills of three topping cycle component developers: TRW, Avco/TDS, and Westinghouse. TRW, the prime contractor and system integrator, is responsible for the 50 thermal megawatt (50 MW{sub t}) slagging coal combustion subsystem. Avco/TDS is responsible for the MHD channel subsystem (nozzle, channel, diffuser, and power conditioning circuits), and Westinghouse is responsible for the current consolidation subsystem. The ITC Project will advance the state-of-the-art in MHD power systems with the design, construction, and integrated testing of 50 MW{sub t} power train components which are prototypical of the equipment that will be used in an early commercial scale MHD utility retrofit. Long duration testing of the integrated power train at the Component Development and Integration Facility (CDIF) in Butte, Montana will be performed, so that by the early 1990's, an engineering data base on the reliability, availability, maintainability and performance of the system will be available to allow scaleup of the prototypical designs to the next development level. This Sixteenth Quarterly Technical Progress Report covers the period May 1, 1991 to July 31, 1991.

  8. MHD Integrated Topping Cycle Project

    SciTech Connect (OSTI)

    Not Available

    1992-01-01

    The overall objective of the project is to design and construct prototypical hardware for an integrated MHD topping cycle, and conduct long duration proof-of-concept tests of integrated system at the US DOE Component Development and Integration Facility in Butte, Montana. The results of the long duration tests will augment the existing engineering design data base on MHD power train reliability, availability, maintainability, and performance, and will serve as a basis for scaling up the topping cycle design to the next level of development, an early commercial scale power plant retrofit. The components of the MHD power train to be designed, fabricated, and tested include: A slagging coal combustor with a rated capacity of 50 MW thermal input, capable of operation with an Eastern (Illinois {number sign}6) or Western (Montana Rosebud) coal, a segmented supersonic nozzle, a supersonic MHD channel capable of generating at least 1.5 MW of electrical power, a segmented supersonic diffuser section to interface the channel with existing facility quench and exhaust systems, a complete set of current control circuits for local diagonal current control along the channel, and a set of current consolidation circuits to interface the channel with the existing facility inverter.

  9. Top polarisation measurement and anomalous $Wtb$ coupling

    E-Print Network [OSTI]

    Arun Prasath; Rohini M. Godbole; Saurabh D. Rindani

    2014-12-09

    Kinematical distributions of the decay products of the top quark carry information on the polarisation of the top as well as on any possible new physics in the decay of the top quark. We construct observables in the form of asymmetries in the kinematical distributions to probe their effects. Charged-lepton angular distributions in the decay are insensitive to anomalous couplings and are a sensitive measure of top polarisation. However, these are difficult to measure in the case of highly boosted top quarks as compared to energy distributions of decay products. These are then sensitive, in general, to both top polarisation and top anomalous couplings. We compare various asymmetries for their sensitivities to the polarisation of the top quark as well as to possible new physics in the $Wtb$ vertex, paying special attention to the case of highly boosted top quarks. We perform a $\\chi ^2$- analysis to determine the regions in the polarisation of the top quark and the couplings of the $Wtb$ vertex constrained by different combinations of the asymmetries.

  10. Load research manual. Volume 1. Load research procedures

    SciTech Connect (OSTI)

    Brandenburg, L.; Clarkson, G.; Grund, Jr., C.; Leo, J.; Asbury, J.; Brandon-Brown, F.; Derderian, H.; Mueller, R.; Swaroop, R.

    1980-11-01

    This three-volume manual presents technical guidelines for electric utility load research. Special attention is given to issues raised by the load data reporting requirements of the Public Utility Regulatory Policies Act of 1978 and to problems faced by smaller utilities that are initiating load research programs. In Volumes 1 and 2, procedures are suggested for determining data requirements for load research, establishing the size and customer composition of a load survey sample, selecting and using equipment to record customer electricity usage, processing data tapes from the recording equipment, and analyzing the data. Statistical techniques used in customer sampling are discussed in detail. The costs of load research also are estimated, and ongoing load research programs at three utilities are described. The manual includes guides to load research literature and glossaries of load research and statistical terms.

  11. Measuring alignment of loading fixture

    DOE Patents [OSTI]

    Scavone, Donald W. (Saratoga Springs, NY)

    1989-01-01

    An apparatus and method for measuring the alignment of a clevis and pin type loading fixture for compact tension specimens include a pair of substantially identical flat loading ligaments. Each loading ligament has two apertures for the reception of a respective pin of the loading fixture and a thickness less than one-half of a width of the clevis opening. The pair of loading ligaments are mounted in the clevis openings at respective sides thereof. The loading ligaments are then loaded by the pins of the loading fixture and the strain in each loading ligament is measured. By comparing the relative strain of each loading ligament, the alignment of the loading fixture is determined. Preferably, a suitable strain gage device is located at each longitudinal edge of a respective loading ligament equidistant from the two apertures in order to determine the strain thereat and hence the strain of each ligament. The loading ligaments are made substantially identical by jig grinding the loading ligaments as a matched set. Each loading ligament can also be individually calibrated prior to the measurement.

  12. Front contact solar cell with formed electrically conducting layers on the front side and backside

    DOE Patents [OSTI]

    Cousins, Peter John

    2012-06-26

    A bipolar solar cell includes a backside junction formed by a silicon substrate and a first doped layer of a first dopant type on the backside of the solar cell. A second doped layer of a second dopant type makes an electrical connection to the substrate from the front side of the solar cell. A first metal contact of a first electrical polarity electrically connects to the first doped layer on the backside of the solar cell, and a second metal contact of a second electrical polarity electrically connects to the second doped layer on the front side of the solar cell. An external electrical circuit may be electrically connected to the first and second metal contacts to be powered by the solar cell.

  13. Load Management Made Simple 

    E-Print Network [OSTI]

    Schneider, K.

    1985-01-01

    Company have moved to a demand side or load management mode which seeks to influence customers to change electric usage patterns to more efficiently use available generating capacity. Since 1970, the TUEC system peak demand has more than doubled from about...

  14. Investigation of the Brazil Current front variability from altimeter data

    E-Print Network [OSTI]

    Investigation of the Brazil Current front variability from altimeter data Gustavo J. Goni Atlantic, Brazil Abstract. The southwestern Atlantic Ocean is characterized by the confluence of the Brazil in conjunction with a two-layer dynamical ocean scheme to monitor the Brazil Current front and to investigate its

  15. Combustion fronts in porous media with two layers Steve Schecter

    E-Print Network [OSTI]

    Schecter, Stephen

    Combustion fronts in porous media with two layers layer 1 layer 2 Steve Schecter North Carolina Subject: Propagation of a combustion front through a porous medium with two parallel layers having different properties. · Each layer admits a traveling combustion wave. · The layers are coupled by heat

  16. Mean stream coordinates structure of the Subantarctic Front: Temperature, salinity,

    E-Print Network [OSTI]

    Luther, Douglas S.

    . The cross-stream structure of along-stream velocity is very nearly symmetric about the jet axisMean stream coordinates structure of the Subantarctic Front: Temperature, salinity, and absolute southwest of Tasmania, at the Subantarctic Front (SAF), is estimated by a stream coordinates analysis

  17. Front velocity in models with quadratic autocatalysis Vladimir K. Vanaga)

    E-Print Network [OSTI]

    Epstein, Irving R.

    Front velocity in models with quadratic autocatalysis Vladimir K. Vanaga) and Irving R. Epstein reaction­diffusion models based on the Oregonator model of the Belousov­Zhabotinsky reaction. Each system the dependence of the front velocity on the diffusion coefficients of X and R, the interconversion rates

  18. NUMERICAL SOLUTION OF THE POLYMER SYSTEM BY FRONT TRACKING

    E-Print Network [OSTI]

    , models two­phase, three­component polymer flooding in an oil reservoir. Two examples are presented, where. Key words and phrases. Front tracking, nonstrictly hyperbolic systems, polymer flooding, dimensionalNUMERICAL SOLUTION OF THE POLYMER SYSTEM BY FRONT TRACKING V. HAUGSE, K. H. KARLSEN, K.--A. LIE

  19. Top quark mass measurements at CDF

    SciTech Connect (OSTI)

    Brubaker, Erik; /Chicago U., EFI

    2006-05-01

    The mass of the top quark M{sub top} is interesting both as a fundamental parameter of the standard model and as an important input to precision electroweak tests. The Collider Detector at Fermilab (CDF) has a robust program of top quark mass analyses, including the most precise single measurement, M{sub top} = 173.4 {+-} 2.8 GeV/c{sup 2}, using 680 pb{sup -1} of p{bar p} collision data. A combination of current results from CDF gives M{sub top} = 172.0 {+-} 2.7 GeV/c{sup 2}, surpassing the stated goal of 3 GeV/c{sup 2} precision using 2 fb{sup -1} of data. Finally, a combination with current D0 results gives a world average top quark mass of 172.5 {+-} 2.3 GeV/c{sup 2}.

  20. TOP500 Supercomputers for June 2005

    SciTech Connect (OSTI)

    Strohmaier, Erich; Meuer, Hans W.; Dongarra, Jack; Simon, Horst D.

    2005-06-22

    25th Edition of TOP500 List of World's Fastest Supercomputers Released: DOE/L LNL BlueGene/L and IBM gain Top Positions MANNHEIM, Germany; KNOXVILLE, Tenn.; BERKELEY, Calif. In what has become a closely watched event in the world of high-performance computing, the 25th edition of the TOP500 list of the world's fastest supercomputers was released today (June 22, 2005) at the 20th International Supercomputing Conference (ISC2005) in Heidelberg Germany.

  1. TOP500 Supercomputers for June 2004

    SciTech Connect (OSTI)

    Strohmaier, Erich; Meuer, Hans W.; Dongarra, Jack; Simon, Horst D.

    2004-06-23

    23rd Edition of TOP500 List of World's Fastest Supercomputers Released: Japan's Earth Simulator Enters Third Year in Top Position MANNHEIM, Germany; KNOXVILLE, Tenn.;&BERKELEY, Calif. In what has become a closely watched event in the world of high-performance computing, the 23rd edition of the TOP500 list of the world's fastest supercomputers was released today (June 23, 2004) at the International Supercomputer Conference in Heidelberg, Germany.

  2. TOP500 Supercomputers for November 2004

    SciTech Connect (OSTI)

    Strohmaier, Erich; Meuer, Hans W.; Dongarra, Jack; Simon, Horst D.

    2004-11-08

    24th Edition of TOP500 List of World's Fastest Supercomputers Released: DOE/IBM BlueGene/L and NASA/SGI's Columbia gain Top Positions MANNHEIM, Germany; KNOXVILLE, Tenn.; BERKELEY, Calif. In what has become a closely watched event in the world of high-performance computing, the 24th edition of the TOP500 list of the worlds fastest supercomputers was released today (November 8, 2004) at the SC2004 Conference in Pittsburgh, Pa.

  3. Top for economics Rank Business School

    E-Print Network [OSTI]

    Lin, Xiaodong

    Top for economics Rank Business School 1 University of Chicago: Booth Rutgers Business School of Strathclyde Business School University of Pretoria, Gibs IMD 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 Top/WHU Beisheim Tsinghua University/Insead Top for international business Rank Business School 1 2 3 4 5 6 7 8 9

  4. Top quark properties at the Tevatron

    E-Print Network [OSTI]

    Andreas Werner Jung

    2014-12-12

    Recent measurements of top-quark properties at the Tevatron, including top quark production asymmetries and properties, are presented. Latest updates of measurements of top quark production asymmetries include the measurement of the $t\\bar{t}$ production asymmetry by D0 employing the full Run II data set, in the lepton + jets and dilepton decay channel. Within their uncertainties the results from all these measurements agree with their respective Standard Model expectation.

  5. MHD Integrated Topping Cycle Project

    SciTech Connect (OSTI)

    Not Available

    1992-07-01

    This seventeenth quarterly technical progress report of the MHD Integrated Topping Cycle Project presents the accomplishments during the period August 1, 1991 to October 31, 1991. Manufacturing of the prototypical combustor pressure shell has been completed including leak, proof, and assembly fit checking. Manufacturing of forty-five cooling panels was also completed including leak, proof, and flow testing. All precombustor internal components (combustion can baffle and swirl box) were received and checked, and integration of the components was initiated. A decision was made regarding the primary and backup designs for the 1A4 channel. The assembly of the channel related prototypical hardware continued. The cathode wall electrical wiring is now complete. The mechanical design of the diffuser has been completed.

  6. Top Quark Production Asymmetries AFBt and AFBl

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

    Berger, Edmond L.; Cao, Qing-Hong; Chen, Chuan-Ren; Yu, Jiang-Hao; Zhang, Hao

    2012-02-14

    A large forward-backward asymmetry is seen in both the top quark rapidity distribution AFBt and in the rapidity distribution of charged leptons AFBl from top quarks produced at the Tevatron. We study the kinematic and dynamic aspects of the relationship of the two observables arising from the spin correlation between the charged lepton and the top quark with different polarization states. We emphasize the value of both measurements, and we conclude that a new physics model which produces more right-handed than left-handed top quarks is favored by the present data.

  7. New Physics in Top at Tevatron

    E-Print Network [OSTI]

    Amnon Harel; for the CDF Collaboration; for the D0 Collaboration

    2011-09-18

    I report on direct and indirect searches for new physics in top events from the CDF and D0 Collaborations at the Fermilab Tevatron Collider.

  8. Press Pass - Press Release - Single top quark

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

    Higgs." Discovering the single top quark production presents challenges similar to the Higgs boson search in the need to extract an extremely small signal from a very large...

  9. Unvented, Conditioned Crawlspaces - Building America Top Innovation...

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

    the interior of a framed crawlspace with insulation installed. This Top Innovation profile highlights Building America research into the benefits of closed, conditioned crawlspaces...

  10. Top quark physics in hadron collisions

    E-Print Network [OSTI]

    Wolfgang Wagner

    2007-08-03

    The top quark is the heaviest elementary particle observed to date. Its large mass makes the top quark an ideal laboratory to test predictions of perturbation theory concerning heavy quark production at hadron colliders. The top quark is also a powerful probe for new phenomena beyond the Standard Model of particle physics. In addition, the top quark mass is a crucial parameter for scrutinizing the Standard Model in electroweak precision tests and for predicting the mass of the yet unobserved Higgs boson. Ten years after the discovery of the top quark at the Fermilab Tevatron top quark physics has entered an era where detailed measurements of top quark properties are undertaken. In this review article an introduction to the phenomenology of top quark production in hadron collisions is given, the lessons learned in Tevatron Run I are summarized, and first Run II results are discussed. A brief outlook to the possibilities of top quark research a the Large Hadron Collider, currently under construction at CERN, is included.

  11. Top Quark Physics at the CDF Experiment

    E-Print Network [OSTI]

    Bernd Stelzer; for the CDF Collaboration

    2010-07-21

    Fermilab's Tevatron accelerator is recently performing at record luminosities that enables a program systematically addressing the physics of top quarks. The CDF collaboration has analyzed up to 5/fb of proton anti-proton collisions from the Tevatron at a center of mass energy of 1.96 TeV. The large datasets available allow to push top quark measurements to higher and higher precision and have lead to the recent observation of electroweak single top quark production at the Tevatron. This article reviews recent results on top quark physics from the CDF experiment.

  12. Top Six Areawide Contract Provisions Forgotten

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

    TOP SIX AREAWIDE CONTRACT PROVISIONS FORGOTTEN LINDA L. COLLINS Hosted by: FEDERAL UTILITY PARTNERSHIP WORKING GROUP SEMINAR November 5-6, 2014 Cape Canaveral. Florida ONE * Term...

  13. Top Quark Production Asymmetries AFBt and AFBl

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

    Berger, Edmond L.; Cao, Qing-Hong; Chen, Chuan-Ren; Yu, Jiang-Hao; Zhang, Hao

    2012-02-01

    A large forward-backward asymmetry is seen in both the top quark rapidity distribution AFBt and in the rapidity distribution of charged leptons AFBl from top quarks produced at the Tevatron. We study the kinematic and dynamic aspects of the relationship of the two observables arising from the spin correlation between the charged lepton and the top quark with different polarization states. We emphasize the value of both measurements, and we conclude that a new physics model which produces more right-handed than left-handed top quarks is favored by the present data.

  14. Jet substructures of boosted polarized top quarks

    E-Print Network [OSTI]

    Yoshio Kitadono; Hsiang-nan Li

    2014-09-05

    We study jet substructures of a boosted polarized top quark, which undergoes the semileptonic decay $t\\to b\\ell\

  15. Supercomputing Challenge top winners: Los Alamos schools

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

    schools Cole Kendrick won the top prize for his research project, "Computer Simulation of Dark Matter Effects on Galaxy Rotation". April 26, 2011 Cole Kendrick Cole Kendrick...

  16. Mesa Top Photovoltaic Array (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2009-07-01

    Fact sheet overview of the Mesa Top Photovoltaic Array project implemented by the Department of Energy Golden Office and National Renewable Energy Laboratory.

  17. Electrical Load Modeling and Simulation

    SciTech Connect (OSTI)

    Chassin, David P.

    2013-01-01

    Electricity consumer demand response and load control are playing an increasingly important role in the development of a smart grid. Smart grid load management technologies such as Grid FriendlyTM controls and real-time pricing are making their way into the conventional model of grid planning and operations. However, the behavior of load both affects, and is affected by load control strategies that are designed to support electric grid planning and operations. This chapter discussed the natural behavior of electric loads, how it interacts with various load control and demand response strategies, what the consequences are for new grid operation concepts and the computing issues these new technologies raise.

  18. NNLL threshold resummation for top-pair and single-top production

    E-Print Network [OSTI]

    Nikolaos Kidonakis

    2012-12-17

    I discuss threshold resummation at NNLL accuracy in the standard moment-space approach in perturbative QCD for top-pair and single-top production. For top quark pair production I present new approximate NNLO results for the total cross section and for the top quark transverse momentum and rapidity distributions at 8 TeV LHC energy. I discuss the accuracy of the soft-gluon approximation and show that the NLO and NNLO approximate results from resummation are practically indistinguishable from exact NLO and partial NNLO results. For single top production I present new approximate NNLO results for the total cross sections in all three channels at the LHC and also for the top quark transverse momentum distributions in t-channel production and in top-quark associated production with a W boson. For both ttbar and single-top production the agreement of theoretical results with LHC and Tevatron data is excellent.

  19. PoS(TOP2006)026 Top properties within the SM

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    PoS(TOP2006)026 Top properties within the SM Bernardo Resende CPPM, CNRS/IN2P3 - Univ. Méditerranée, Marseille, France E-mail: resende@cppm.in2p3.fr The high number of top quarks which Workshop on Top Quark Physics January 12-15, 2006 Coimbra, Portugal ¡ On behalf of the CMS and ATLAS

  20. Buildings Stock Load Control 

    E-Print Network [OSTI]

    Joutey, H. A.; Vaezi-Nejad, H.; Clemoncon, B.; Rosenstein, F.

    2006-01-01

    , Shenzhen, China Building Commissioning for Energy Efficiency and Comfort, Vol.VI-9-4 Buildings Stock Load Control Ms H. Amrani Joutey Mr H. Vaezi-Nejad Mr B. Clemonçon Mr F.Rosenstein PHD student Research engineer Research... electricity consumption and curtail peak demand but in local form: building by building. Few developments are carried out for multi sites management. Multi sites management is essential in crisis and/or peak periods (large energy demand in particular during...

  1. Load responsive hydrodynamic bearing

    DOE Patents [OSTI]

    Kalsi, Manmohan S. (Houston, TX); Somogyi, Dezso (Sugar Land, TX); Dietle, Lannie L. (Stafford, TX)

    2002-01-01

    A load responsive hydrodynamic bearing is provided in the form of a thrust bearing or journal bearing for supporting, guiding and lubricating a relatively rotatable member to minimize wear thereof responsive to relative rotation under severe load. In the space between spaced relatively rotatable members and in the presence of a liquid or grease lubricant, one or more continuous ring shaped integral generally circular bearing bodies each define at least one dynamic surface and a plurality of support regions. Each of the support regions defines a static surface which is oriented in generally opposed relation with the dynamic surface for contact with one of the relatively rotatable members. A plurality of flexing regions are defined by the generally circular body of the bearing and are integral with and located between adjacent support regions. Each of the flexing regions has a first beam-like element being connected by an integral flexible hinge with one of the support regions and a second beam-like element having an integral flexible hinge connection with an adjacent support region. A least one local weakening geometry of the flexing region is located intermediate the first and second beam-like elements. In response to application of load from one of the relatively rotatable elements to the bearing, the beam-like elements and the local weakening geometry become flexed, causing the dynamic surface to deform and establish a hydrodynamic geometry for wedging lubricant into the dynamic interface.

  2. Shot loading trainer analysis

    SciTech Connect (OSTI)

    Peterson, T.K.

    1995-02-15

    This document presents the results from the analysis of the shot loading trainer (SLT). This device will be used to test the procedure for installing shot into the annulus of the Project W-320 shipping container. To ensure that the shot is installed uniformly around the container, vibrators will be used to settle the shot. The SLT was analyzed to ensure that it would not jeopardize worker safety during operation. The results from the static analysis of the SLT under deadweight and vibrator operating loads show that the stresses in the SLT are below code allowables. The results from the modal analysis show that the natural frequencies of the SLT are far below the operating frequencies of the vibrators, provided the SLT is mounted on pneumatic tires. The SLT was also analyzed for wind, seismic, deadweight, and moving/transporting loads. Analysis of the SLT is in accordance with SDC-4.1 for safety class 3 structures (DOE-RL 1993) and the American Institute of Steel Construction (AISC) Manual of Steel Construction (AISC 1989).

  3. CDF/PUB/TOP/CDFR/11033 Updated Measurement of the Single Top Quark Production Cross1

    E-Print Network [OSTI]

    Quigg, Chris

    CDF/PUB/TOP/CDFR/11033 Updated Measurement of the Single Top Quark Production Cross1 Section in the form of a reconstructed jet.30 The first CDF measurement of electroweak single top quark production 1 URL http://www-cdf.fnal.gov5 (Dated: May 9, 2014)6 Abstract An updated measurement

  4. Load Management: Opportunity or Calamity? 

    E-Print Network [OSTI]

    Males, R.; Hassig, N.

    1981-01-01

    larger now than prior to 1973. Utilities are examining two options which can be termed load management. One option is to control discretionary loads during peak periods. Cycling of residential water heaters or shutting off industrial electric furnaces...

  5. Tools for top physics at D0

    E-Print Network [OSTI]

    Amnon Harel

    2008-07-24

    Top quark measurements rely on the jet energy calibration and often on b-quark identification. We discuss these and other tools and how they apply to top quark analyses at D0. In particular some of the nuances that result from D0's data driven approach to these issues are presented.

  6. Top quark property measurements at the LHC

    E-Print Network [OSTI]

    Richard Hawkings

    2014-10-29

    Measurements of top quark properties performed at the Large Hadron Collider are reviewed, with a particular emphasis on top-pair charge asymmetries, spin correlations and polarization measurements performed by the ATLAS and CMS collaborations. The measurements are generally in good agreement with predictions from next-to-leading-order QCD calculations, and no deviations from Standard Model expectations have been seen.

  7. Odd Top Partners at the LHC

    E-Print Network [OSTI]

    Archana Anandakrishnan; Jack H. Collins; Marco Farina; Eric Kuflik; Maxim Perelstein

    2015-06-16

    LHC searches for fermionic top partners $T$ focus on three decay topologies: $T\\to bW$, $T\\to tZ$, and $T\\to th$. However, top partners may carry new conserved quantum numbers that forbid these decays. The simplest possibility is a conserved parity, under which the top partner is odd and all SM states are even. In this case, decays of top partners may involve new particle-odd scalars, leading to signal topologies more commonly associated with supersymmetry, either with or without R-parity conservation. We study a simplified model in which this possibility is realized, and estimate the bounds on the top partner mass in this model implied by LHC searches for supersymmetry. We find that the bounds can be significantly weaker than in the conventional top partner decay scenario. For example, if the new parity is exact, a 500 GeV top partner is allowed as long as the lightest parity-odd scalar mass is between 325 and 500 GeV. The lower allowed top partner mass reduces the need for fine-tuning in the Higgs mass parameter, compared to the conventional decay scenario. We also present an explicit model, the Oddest Little Higgs, which exhibits this phenomenology.

  8. The Top Quark - 2006 and Beyond

    E-Print Network [OSTI]

    John Womersley

    2006-04-04

    We know there is new physics at the electroweak scale, but we don't know what it is. Right now, the top quark is our only window on to this physics. In almost all models of electroweak symmetry breaking, top either couples strongly to new particles or its properties are modified in some way. Top is being studied in detail at the Fermilab Tevatron. Its production cross section has been measured in a variety of channels; its mass has been determined to better than 2%, and can be used to constrain the mass of the Higgs. Top quark decays have been tested and non-standard production mechanisms searched for. Single top production probes the electroweak properties of top, and has not yet been observed; searches are now closing in on this process and it should be seen soon. So far, all of the top quark's properties are consistent with the Standard Model. However, the data still to come at the Tevatron will increase the precision of all these measurements, and the enormous statistics available at the LHC will open up new possibilities such as observation of spin correlations and perhaps even CP violation in the top sector.

  9. CP violation in top-quark physics

    E-Print Network [OSTI]

    German Valencia

    2010-07-27

    In this talk I review how to search for CP violation in top-quark pair production and decay using T-odd correlations. I discuss two examples which illustrate many of the relevant features: CP violation in a heavy neutral Higgs boson; and CP violating anomalous top-quark couplings. I present some numerical results for the LHC and some for the Tevatron.

  10. TOP500 Supercomputers for June 2002

    SciTech Connect (OSTI)

    Strohmaier, Erich; Meuer, Hans W.; Dongarra, Jack; Simon, Horst D.

    2002-06-20

    19th Edition of TOP500 List of World's Fastest Supercomputers Released MANNHEIM, Germany; KNOXVILLE, Tenn.;&BERKELEY, Calif. In what has become a much-anticipated event in the world of high-performance computing, the 19th edition of the TOP500 list of the worlds fastest supercomputers was released today (June 20, 2002). The recently installed Earth Simulator supercomputer at the Earth Simulator Center in Yokohama, Japan, is as expected the clear new number 1. Its performance of 35.86 Tflop/s (trillions of calculations per second) running the Linpack benchmark is almost five times higher than the performance of the now No.2 IBM ASCI White system at Lawrence Livermore National Laboratory (7.2 Tflop/s). This powerful leap frogging to the top by a system so much faster than the previous top system is unparalleled in the history of the TOP500.

  11. Electron g-2 in Light-front Quantization

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

    Zhao, Xingbo; Honkanen, Heli; Maris, Pieter; Vary, James P.; Brodsky, Stanley J.

    2014-10-01

    Basis Light-front Quantization has been proposed as a nonperturbative framework for solving quantum field theory. We apply this approach to Quantum Electrodynamics and explicitly solve for the light-front wave function of a physical electron. Based on the resulting light-front wave function, we evaluate the electron anomalous magnetic moment. Nonperturbative mass renormalization is performed. Upon extrapolation to the infinite basis limit our numerical results agree with the Schwinger result obtained in perturbation theory to an accuracy of 0.06%.

  12. MHD Integrated Topping Cycle Project

    SciTech Connect (OSTI)

    Not Available

    1992-02-01

    This fourteenth quarterly technical progress report of the MHD Integrated Topping Cycle Project presents the accomplishments during the period November 1, 1990 to January 31, 1991. Testing of the High Pressure Cooling Subsystem electrical isolator was completed. The PEEK material successfully passed the high temperature, high pressure duration tests (50 hours). The Combustion Subsystem drawings were CADAM released. The procurement process is in progress. An equipment specification and RFP were prepared for the new Low Pressure Cooling System (LPCS) and released for quotation. Work has been conducted on confirmation tests leading to final gas-side designs and studies to assist in channel fabrication.The final cathode gas-side design and the proposed gas-side designs of the anode and sidewall are presented. Anode confirmation tests and related analyses of anode wear mechanisms used in the selection of the proposed anode design are presented. Sidewall confirmation tests, which were used to select the proposed gas-side design, were conducted. The design for the full scale CDIF system was completed. A test program was initiated to investigate the practicality of using Avco current controls for current consolidation in the power takeoff (PTO) regions and to determine the cause of past current consolidation failures. Another important activity was the installation of 1A4-style coupons in the 1A1 channel. A description of the coupons and their location with 1A1 channel is presented herein.

  13. CDF/TOP/DOC/6265 Version 1.1

    E-Print Network [OSTI]

    CDF/TOP/DOC/6265 Version 1.1 January 14, 2003 Description of data samples for Top and Electroweak a complete description of the high p T electron and muon data samples which will be used for Top from the Top Group Data page http://www-cdf.fnal.gov/internal/physics/top/topdata/newtopdata.html 1

  14. Photos credits for front cover: Top photos Comstock and Agricultural Research Service, U.S. Department of Agriculture (USDA).

    E-Print Network [OSTI]

    , and the role of research. 1. Biomass energy--Economic aspects--United States. 2. Biomass energy--Research--United States. 3. Feedstock--United States--Costs. 4. Corn--Yields--United States. 5. Forest biomass--United States. 6. Alcohol as fuel. 7. Biodiesel fuels--United States. I. Biomass Research and Development Board

  15. Tevatron Top-Quark Combinations and World Top-Quark Mass Combination

    E-Print Network [OSTI]

    Reinhild Yvonne Peters; on behalf of the ATLAS; CDF; CMS; D0 collaborations

    2014-11-04

    Almost 20 years after its discovery, the top quark is still an interesting particle, undergoing precise investigation of its properties. For many years, the Tevatron proton antiproton collider at Fermilab was the only place to study top quarks in detail, while with the recent start of the LHC proton proton collider a top quark factory has opened. An important ingredient for the full understanding of the top quark is the combination of measurements from the individual experiments. In particular, the Tevaton combinations of single top-quark cross sections, the ttbar production cross section, the W helicity in top-quark decays as well as the Tevatron and the world combination of the top-quark mass are discussed.

  16. Daylighting Design Tools in Atria for Minimum Cooling Loads in Atrium Buildings 

    E-Print Network [OSTI]

    Atif, M. R.; Boyer, L. L.; Degelman, L. O.; Claridge, D. E.

    1992-01-01

    floor, so that the cooling loads could be minimized. Illumination measurements were collected in physical scale models of two and four-story atria in a sky simulator. The two key variables of the study were: a) horizontal and vertical south-facing top-glazing...

  17. Multidimensional spectral load balancing

    SciTech Connect (OSTI)

    Hendrickson, B.; Leland, R.

    1993-01-01

    We describe an algorithm for the static load balancing of scientific computations that generalizes and improves upon spectral bisection. Through a novel use of multiple eigenvectors, our new spectral algorithm can divide a computation into 4 or 8 pieces at once. These multidimensional spectral partitioning algorithms generate balanced partitions that have lower communication overhead and are less expensive to compute than those produced by spectral bisection. In addition, they automatically work to minimize message contention on a hypercube or mesh architecture. These spectral partitions are further improved by a multidimensional generalization of the Kernighan-Lin graph partitioning algorithm. Results on several computational grids are given and compared with other popular methods.

  18. Variable loading roller

    DOE Patents [OSTI]

    Williams, Daniel M. (Oliver Springs, TN)

    1989-01-01

    An automatic loading roller for transmitting torque in traction drive devices in manipulator arm joints includes a two-part camming device having a first cam portion rotatable in place on a shaft by an input torque and a second cam portion coaxially rotatable and translatable having a rotating drive surface thereon for engaging the driven surface of an output roller with a resultant force proportional to the torque transmitted. Complementary helical grooves on the respective cam portions interconnected through ball bearings interacting with those grooves effect the rotation and translation of the second cam portion in response to rotation of the first.

  19. Variable loading roller

    DOE Patents [OSTI]

    Williams, D.M.

    1988-01-21

    An automatic loading roller for transmitting torque in traction drive devices in manipulator arm joints includes a two-part camming device having a first cam portion rotatable in place on a shaft by an input torque and a second cam portion coaxially rotatable and translatable having a rotating drive surface thereon for engaging the driven surface of an output roller with a resultant force proportional to the torque transmitted. Complementary helical grooves in the respective cam portions interconnected through ball bearings interacting with those grooves effect the rotation and translation of the second cam portion in response to rotation of the first. 14 figs.

  20. LARGE-SCALE CORONAL PROPAGATING FRONTS IN SOLAR ERUPTIONS AS...

    Office of Scientific and Technical Information (OSTI)

    LARGE-SCALE CORONAL PROPAGATING FRONTS IN SOLAR ERUPTIONS AS OBSERVED BY THE ATMOSPHERIC IMAGING ASSEMBLY ON BOARD THE SOLAR DYNAMICS OBSERVATORY-AN ENSEMBLE STUDY Re-direct...

  1. RF CMOS UWB transmitter and receiver front-end design 

    E-Print Network [OSTI]

    Miao, Meng

    2009-05-15

    The low-cost low-power complementary metal-oxide semiconductor (CMOS) ultra wideband (UWB) transmitter and receiver front-ends based on impulse technology were developed. The CMOS UWB pulse generator with frequency-band ...

  2. The Active Wave-front Sampling based 3D endoscope

    E-Print Network [OSTI]

    Prakash, Hemanth

    2007-01-01

    This thesis investigates the potential of Active Wave-front Sampling (AWS) for real time quantified 3D endoscopy. AWS is a technique by which phase information from an aperture area of a lens is obtained by sampling ...

  3. Global optimization of silicon photovoltaic cell front coatings

    E-Print Network [OSTI]

    Ghebrebrhan, Michael

    The front-coating (FC) of a solar cell controls its efficiency, determining admission of light into the absorbing material and potentially trapping light to enhance thin absorbers. Single-layer FC designs are well known, ...

  4. Home Front as Warfront: African American World War I Drama

    E-Print Network [OSTI]

    Egging, Anna Katherine

    2010-08-31

    This dissertation recovers little-known African American World War I plays that blur the boundary between the home front and warfront. I argue that with this focus, the plays wage their own war for African American citizenship ...

  5. Speed-up of combustion fronts in shear flows

    E-Print Network [OSTI]

    Hamel, Francois

    2011-01-01

    This paper is concerned with the analysis of speed-up of reaction-diffusion-advection traveling fronts in infinite cylinders with periodic boundary conditions. The advection is a shear flow with a large amplitude and the reaction is nonnegative, with either positive or zero ignition temperature. The unique or minimal speeds of the traveling fronts are proved to be asymptotically linear in the flow amplitude as the latter goes to infinity, solving an open problem from \\cite{b}. The asymptotic growth rate is characterized explicitly as the unique or minimal speed of traveling fronts for a limiting degenerate problem, and the convergence of the regular traveling fronts to the degenerate ones is proved for positive ignition temperatures under an additional H{\\"{o}}rmander-type condition on the flow.

  6. Carbon Emissions from Smouldering Peat in Shallow and Strong Fronts 

    E-Print Network [OSTI]

    Rein, Guillermo; Cohen, Simon; Simeoni, Albert

    2009-01-01

    A series of experiments of shallow and strong smouldering fronts in boreal peat have been conducted under laboratory conditions to study the CO and CO2 emissions. Peat samples of 100 mm by 100 mm in cross section and 50 ...

  7. Development of a transonic front stage of an axial flow compressor for industrial gas turbines

    SciTech Connect (OSTI)

    Katoh, Y.; Ishii, H.; Tsuda, Y.; Yanagida, M. . Mechanical Engineering Research Lab.); Kashiwabara, Y. . Dept. of Mechanical Systems Engineering)

    1994-10-01

    This paper describes the aerodynamic blade design of a highly loaded three-stage compressor, which is a model compressor for the front stage of an industrial gas turbine. Test results are presented that confirm design performance. Some surge and rotating stall measurement results are also discussed. The first stator blade in this test compressor operates in the high subsonic range at the inlet. To reduce the pressure loss due to blade surface shock waves, a shock-free airfoil is designed to replace the first stator blade in an NACA-65 airfoil in a three-stage compressor. Comparison of the performance of both blades shows that the shock-free airfoil blade reduces pressure loss. This paper also presents some experimental results for MCA (multicircular arc) airfoils, which are used for first rotor blades.

  8. Meson structure in light-front holographic QCD

    E-Print Network [OSTI]

    Rohit Swarnkar; Dipankar Chakrabarti

    2015-07-06

    We consider the light-front holographic QCD with the light-front wave functions for mesons, modified for massive quarks. We evaluate the wave functions, distribution amplitudes, and form factors for $\\pi$, $\\rho$, $K$, and $J/\\psi$ mesons and photon-to-meson transition form factors for $\\pi$, $\\eta$, and $\\eta^\\prime$. The results are compared with the experimental data, wherever available.

  9. Investigating SANS/CWE Top 25 Programming Errors. 1 Investigating the SANS/CWE Top 25 Programming Errors List

    E-Print Network [OSTI]

    Hamlen, Kevin W.

    Investigating SANS/CWE Top 25 Programming Errors. 1 Investigating the SANS/CWE Top 25 Programming Errors List Running Title: Investigating SANS/CWE Top 25 Programming Errors. Investigating the SANS;Investigating SANS/CWE Top 25 Programming Errors. 2 Investigating the SANS/CWE Top 25 Programming Errors List

  10. Top Quark Physics at the LHC

    E-Print Network [OSTI]

    Jorgen D'hondt

    2007-07-10

    The Large Hadron Collider (LHC) is expected to provide proton-proton collisions at a centre-of-mass energy of 14 TeV, yielding millions of of top quark events. The top-physics potential of the two general purpose experiments, ATLAS and CMS, is discussed according to state-of-the-art simulation of both physics and detectors. An overview is given of the most important results with emphasis on the expected improvements in our understanding of physics connected to the top quark.

  11. Direct Measurement and Chemical Speciation of Top Ring Zone Liquid During Engine Operation

    SciTech Connect (OSTI)

    Splitter, Derek A; Burrows, Barry Clay; Lewis Sr, Samuel Arthur

    2015-01-01

    The present manuscript consists of proof of concept experiments involving direct measurements and detailed chemical speciation from the top ring zone of a running engine. The work uses a naturally aspirated single cylinder utility engine that has been modified to allow direct liquid sample acquisition from behind the top ring. Samples were analyzed and spectated using gas chromatographic techniques. Results show that the liquid mixture in the top ring zone is neither neat lubricant nor fuel but a combination of the two with unique chemical properties. At the tested steady state no-load operating condition, the chemical species of the top ring zone liquid were found to be highly dependent on boiling point, where both low reactivity higher boiling point fuel species and lubricant are observed to be the dominant constituents. The results show that at least for the tested condition, approximately 25% of the top ring zone is comprised of gasoline fuel like molecules, which are dominated by high octane number aromatic species, while the remainder of the liquid is comprised of lubricant like species.

  12. Why the Top Two Primary Fails California Voters

    E-Print Network [OSTI]

    Maviglio, Steven

    2015-01-01

    Why the Top Two Primary Fails California Voters Steven14, the proponents of the Top Two primary made some boldto voters. They said the Top Two would “reduce gridlock,” “

  13. Top Incomes in the Long Run of History

    E-Print Network [OSTI]

    Atkinson, Anthony B.; Piketty, Thomas; Saez, Emmanuel

    2012-01-01

    A. B. and T. Piketty eds. Top Incomes over the TwentiethPress. Atkinson, Anthony B. (2010) “Top incomes in a rapidlyA. B. and T. Piketty eds. Top Incomes over the Twentieth

  14. California’s Top Two Primary and the Business Agenda

    E-Print Network [OSTI]

    McGhee, Eric

    2015-01-01

    Quinn, Tony. 2013. The “Top Two” System: Working Like ItAssessing California’s Top-Two Primary and RedistrictingCalifornia’s Top Two Primary and the Business Agenda Eric

  15. Top 10 plant pathogenic bacteria in molecular plant pathology.

    E-Print Network [OSTI]

    2012-01-01

    Foster, G.D. (2012) The top 10 fungal pathogens in molecularBLACKWELL PUBLISHING LTD Top 10 plant pathogenic bacteriaC. and Foster, G.D. (2011) Top 10 plant viruses in molecular

  16. Is California's Top Two Primary Bad for Women Candidates?

    E-Print Network [OSTI]

    Merrill, Katie

    2015-01-01

    to assess the impact of the Top Two over the next two orIs California’s Top Two Primary Bad for Women Candidates?Katie Merrill Since the Top Two was first used in the

  17. Voter Behavior in California’s Top Two Primary

    E-Print Network [OSTI]

    Nagler, Jonathan

    2015-01-01

    simply need time to adapt. The Top Two was a radical changelonger-term effect of the Top Two. References Alvarez, R.915–930. Donovan, Todd. 2012. “The Top Two Primary: What Can

  18. Top quark mass and properties at the Tevatron

    E-Print Network [OSTI]

    J. -F. Arguin; for the CDF; D0 Collaborations

    2005-07-29

    We present recent analyses of top quark properties performed at Run II of the Tevatron. Measurements of the top quark mass, branching ratios and W boson helicity inside top quark decays are covered.

  19. Smoking in top-grossing US movies 2014

    E-Print Network [OSTI]

    Polansky, Jonathan R; Titus, Kori; Atayeva, Renata; Glantz, Stanton A PhD

    2015-01-01

    Smoking in top?grossing US movies Jonathan R. PolanskyApril 23, 2015 Smoking in top?grossing US movies: 2014 | 2about 20 percent of all top?grossing films. Tobacco presence

  20. Press Pass - Press Release - Single Top

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

    DZero finds evidence of rare single top quark; Observation marks a step closer to finding Higgs boson Batavia, Ill.--Scientists of the DZero collaboration at the Department of...

  1. Selling Energy Conservation Projects to Top Management 

    E-Print Network [OSTI]

    Jonsson, K. A.

    1983-01-01

    A guide to presenting proposals on Energy Conservation Projects by plant engineers to their top level management, in order to get approval for Energy Conservation Projects. Through the author's past experience he ascertained that many Energy...

  2. Vapor Retarder Classification - Building America Top Innovation...

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

    vapor retarder classification. Air-tight and well-insulated homes have little or no tolerance for drying if they get wet; moisture control is critical. This Top Innovation profile...

  3. Low voltage supply system for the very front end readout electronics of the CMS electromagnetic calorimeter

    E-Print Network [OSTI]

    Lustermann, W; Denes, P; Djambazov, L; Dröge, M; Faure, J L; Iliev, Bozhidar Z; Nanov, I; Raykov, P; Shivarov, N

    1999-01-01

    Low voltage supply system for the very front end readout electronics of the CMS electromagnetic calorimeter

  4. Frontal circulation induced by up-front and coastal downwelling winds

    E-Print Network [OSTI]

    consequences to vertical exchanges of tracers and water masses. Keywords Ocean fronts . Wind-front interactionFrontal circulation induced by up-front and coastal downwelling winds Yu-Lin Chang & Lie-Yauw Oey-shelf and depth) circula- tion by downwelling wind in the presence of a prograding front (with isopycnals

  5. Buried and Encapsulated Ducts - Building America Top Innovation...

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

    Buried and Encapsulated Ducts - Building America Top Innovation Buried and Encapsulated Ducts - Building America Top Innovation photo of worker blowing insulation on ducts in an...

  6. The Business Case for Fuel Cells 2011: Energizing America's Top...

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

    The Business Case for Fuel Cells 2011: Energizing America's Top Companies The Business Case for Fuel Cells 2011: Energizing America's Top Companies This report profiles a select...

  7. Water Management Guide - Building America Top Innovation | Department...

    Energy Savers [EERE]

    Water Management Guide - Building America Top Innovation Water Management Guide - Building America Top Innovation Cover of the EEBA Water Management Guide. As energy codes and...

  8. Tankless Gas Water Heater Performance - Building America Top...

    Energy Savers [EERE]

    Tankless Gas Water Heater Performance - Building America Top Innovation Tankless Gas Water Heater Performance - Building America Top Innovation This photo shows a hot water heater...

  9. HVAC Cabinet Air Leakage Test Method - Building America Top Innovation...

    Energy Savers [EERE]

    HVAC Cabinet Air Leakage Test Method - Building America Top Innovation HVAC Cabinet Air Leakage Test Method - Building America Top Innovation While HVAC installers have improved...

  10. Social Media and Messages that Matter - Top Tips and Tools |...

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

    and Messages that Matter - Top Tips and Tools Social Media and Messages that Matter - Top Tips and Tools Better Buildings Residential Network Peer Exchange Call Series: Social...

  11. Building America Top Innovations Hall of Fame Profile - Building...

    Energy Savers [EERE]

    Top Innovations Hall of Fame Profile - Building Energy Optimization Analysis Method (BEopt) Building America Top Innovations Hall of Fame Profile - Building Energy Optimization...

  12. Advanced Framing Systems and Packages - Building America Top...

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

    Advanced Framing Systems and Packages - Building America Top Innovation Advanced Framing Systems and Packages - Building America Top Innovation This photo shows advanced framing...

  13. Unvented Crawlspace Code Adoption - Building America Top Innovation...

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

    Unvented Crawlspace Code Adoption - Building America Top Innovation Unvented Crawlspace Code Adoption - Building America Top Innovation Photo of an unvented and insulated...

  14. JLab Recognizes Security Firm as Top Small Business Subcontractor...

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

    Recognizes Security Firm as Top Small Business Subcontractor for 2009 Small Business Mike Dallas, Jefferson Lab's chief operating officer, presents Nicole Stuart, Top Guard...

  15. TOP 10 VULNERABILITIES OF CONTROL SYSTEMS AND THEIR ASSOCIATED...

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

    TOP 10 VULNERABILITIES OF CONTROL SYSTEMS AND THEIR ASSOCIATED MITIGATIONS TOP 10 VULNERABILITIES OF CONTROL SYSTEMS AND THEIR ASSOCIATED MITIGATIONS This document provides...

  16. Next Generation Advanced Framing - Building America Top Innovation...

    Energy Savers [EERE]

    Next Generation Advanced Framing - Building America Top Innovation Next Generation Advanced Framing - Building America Top Innovation This photo shows advanced framing on a rim...

  17. Top 10 Vulnerabilities of Control Systems and Their Associated...

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

    Top 10 Vulnerabilities of Control Systems and Their Associated Migitations (2006) Top 10 Vulnerabilities of Control Systems and Their Associated Migitations (2006) This document...

  18. Building Science-Based Climate Maps - Building America Top Innovation...

    Energy Savers [EERE]

    Building Science-Based Climate Maps - Building America Top Innovation Building Science-Based Climate Maps - Building America Top Innovation Photo showing climate zone maps based on...

  19. High-Efficiency Window Air Conditioners - Building America Top...

    Energy Savers [EERE]

    Efficiency Window Air Conditioners - Building America Top Innovation High-Efficiency Window Air Conditioners - Building America Top Innovation This photo shows a window air...

  20. DOE Announces Webinars on Top Solar Tools, Building Energy Optimizatio...

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

    Top Solar Tools, Building Energy Optimization Tool Training, and More DOE Announces Webinars on Top Solar Tools, Building Energy Optimization Tool Training, and More May 8, 2014 -...

  1. Quality Management System Guidelines - Building America Top Innovation...

    Energy Savers [EERE]

    Quality Management System Guidelines - Building America Top Innovation Quality Management System Guidelines - Building America Top Innovation Effec guid-quality-mgnt.png The...

  2. Deputy Energy Secretary Sherwood-Randall Highlights a Top Budget...

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

    Deputy Energy Secretary Sherwood-Randall Highlights a Top Budget Priority in Texas Deputy Energy Secretary Sherwood-Randall Highlights a Top Budget Priority in Texas February 3,...

  3. Tools for top physics at CDF

    SciTech Connect (OSTI)

    Palencia, E.; /Fermilab

    2008-07-01

    The authors describe here the different tools used for top physics analysis in the CDF Collaboration. In particular, they discuss how the jet energy scale, lepton identification, b tagging algorithms and the neural networks help to improve the signal to background ratio of the top sample in some cases and to reduce the dominant uncertainties in other. Results using each one of these tools are also presented.

  4. Single top quark production at D0

    E-Print Network [OSTI]

    Reinhard Schwienhorst; for the D0 collaboration

    2011-09-13

    Updates of electroweak single top quark production measurements by the D0 collaboration are presented using 5.4fb^-1 of proton-antiproton collision data from the Tevatron at Fermilab. Measurements of the t-channel, s-channel and combined single top quark production cross section are presented, including an updated lower limit on the CKM matrix element |V_tb|. Also reported are results from searches for gluon-quark flavor-changing neutral currents and W' boson production.

  5. INSTABILITY OF MAGNETIZED IONIZATION FRONTS SURROUNDING H II REGIONS

    SciTech Connect (OSTI)

    Kim, Jeong-Gyu; Kim, Woong-Tae, E-mail: jgkim@astro.snu.ac.kr, E-mail: wkim@astro.snu.ac.kr [Center for the Exploration of the Origin of the Universe (CEOU), Astronomy Program, Department of Physics and Astronomy, Seoul National University, Seoul 151-742 (Korea, Republic of)

    2014-12-20

    An ionization front (IF) surrounding an H II region is a sharp interface where a cold neutral gas makes the transition to a warm ionized phase by absorbing UV photons from central stars. We investigate the instability of a plane-parallel D-type IF threaded by parallel magnetic fields, by neglecting the effects of recombination within the ionized gas. We find that weak D-type IFs always have the post-IF magnetosonic Mach number M{sub M2}?1. For such fronts, magnetic fields increase the maximum propagation speed of the IFs, while reducing the expansion factor ? by a factor of 1 + 1/(2?{sub 1}) compared to the unmagnetized case, with ?{sub 1} denoting the plasma beta in the pre-IF region. IFs become unstable to distortional perturbations owing to gas expansion across the fronts, exactly analogous to the Darrieus-Landau instability of ablation fronts in terrestrial flames. The growth rate of the IF instability is proportional linearly to the perturbation wavenumber, as well as the upstream flow speed, and approximately to ?{sup 1/2}. The IF instability is stabilized by gas compressibility and becomes completely quenched when the front is D-critical. The instability is also stabilized by magnetic pressure when the perturbations propagate in the direction perpendicular to the fields. When the perturbations propagate in the direction parallel to the fields, on the other hand, it is magnetic tension that reduces the growth rate, completely suppressing the instability when M{sub M2}{sup 2}<2/(2?{sub 1}?1). When the front experiences an acceleration, the IF instability cooperates with the Rayleigh-Taylor instability to make the front more unstable.

  6. Top-quark transverse-momentum distributions in t-channel single-top production

    E-Print Network [OSTI]

    Nikolaos Kidonakis

    2013-06-15

    I present approximate next-to-next-to-leading-order (NNLO) top-quark transverse momentum, pT, distributions in t-channel single-top production. These distributions are derived from next-to-next-to-leading-logarithm (NNLL) soft-gluon resummation. Theoretical results for the single top as well as the single antitop pT distributions are shown for LHC and Tevatron energies.

  7. CDF/PUB/TOP/PUBLIC/10793 Measurement of Single Top Quark Production

    E-Print Network [OSTI]

    Quigg, Chris

    CDF/PUB/TOP/PUBLIC/10793 Measurement of Single Top Quark Production in 7.5 fb-1 of CDF Data Using a measurement of single top quark production in lepton plus jets final state using 7.5 fb-1 of p¯p collision. We measure a cross section of 3.04+0.57 -0.53pb (stat+syst) and set a lower limit |Vtb| > 0

  8. CDF/PUB/TOP/PUBLIC/10793 Measurement of Single Top Quark Production

    E-Print Network [OSTI]

    Quigg, Chris

    CDF/PUB/TOP/PUBLIC/10793 Measurement of Single Top Quark Production in 7.5 fb-1 of CDF Data Using a measurement of single top quark production in lepton plus jets final state using 7.5 fb-1 of p¯p collision. We measure a cross section of 3.04+0.57 -0.53pb (stat. + syst.) and set a lower limit |Vtb| > 0

  9. Dynamic load balancing of applications

    DOE Patents [OSTI]

    Wheat, S.R.

    1997-05-13

    An application-level method for dynamically maintaining global load balance on a parallel computer, particularly on massively parallel MIMD computers is disclosed. Global load balancing is achieved by overlapping neighborhoods of processors, where each neighborhood performs local load balancing. The method supports a large class of finite element and finite difference based applications and provides an automatic element management system to which applications are easily integrated. 13 figs.

  10. Dynamic load balancing of applications

    DOE Patents [OSTI]

    Wheat, Stephen R. (Albuquerque, NM)

    1997-01-01

    An application-level method for dynamically maintaining global load balance on a parallel computer, particularly on massively parallel MIMD computers. Global load balancing is achieved by overlapping neighborhoods of processors, where each neighborhood performs local load balancing. The method supports a large class of finite element and finite difference based applications and provides an automatic element management system to which applications are easily integrated.

  11. Electrical and Production Load Factors 

    E-Print Network [OSTI]

    Sen, T.; Heffington, W. M.

    2009-01-01

    factors and operating hours of small and medium-sized industrial plants are analyzed to classify shift-work patterns and develop energy conservation diagnostic tools. This paper discusses two types of electric load factors for each shift... The purpose of this paper is to analyze operating hours of small and medium-sized manufacturing plants in the United States and develop ranges of load factors for use as diagnostic tools for effective energy management. Load factor is defined...

  12. High-Power Rf Load

    DOE Patents [OSTI]

    Tantawi, Sami G. (San Mateo, CA); Vlieks, Arnold E. (Livermore, CA)

    1998-09-01

    A compact high-power RF load comprises a series of very low Q resonators, or chokes [16], in a circular waveguide [10]. The sequence of chokes absorb the RF power gradually in a short distance while keeping the bandwidth relatively wide. A polarizer [12] at the input end of the load is provided to convert incoming TE.sub.10 mode signals to circularly polarized TE.sub.11 mode signals. Because the load operates in the circularly polarized mode, the energy is uniformly and efficiently absorbed and the load is more compact than a rectangular load. Using these techniques, a load having a bandwidth of 500 MHz can be produced with an average power dissipation level of 1.5 kW at X-band, and a peak power dissipation of 100 MW. The load can be made from common lossy materials, such as stainless steel, and is less than 15 cm in length. These techniques can also produce loads for use as an alternative to ordinary waveguide loads in small and medium RF accelerators, in radar systems, and in other microwave applications. The design is easily scalable to other RF frequencies and adaptable to the use of other lossy materials.

  13. A combined top-down and down-top search method for determining

    E-Print Network [OSTI]

    Ta Van Tu

    2014-11-04

    in top-down search methods, for example, in cases when the MOLP problem has only one efficient point or only low dimensional efficient faces. In addition, the ...

  14. Top Quark Properties in Little Higgs Models

    SciTech Connect (OSTI)

    Berger, C.F.; /SLAC; Perelstein, M.; /Cornell U., CIHEP; Petriello, F.; /Wisconsin U., Madison

    2005-12-08

    Identifying the mechanism which breaks electroweak symmetry and generates fermion masses is one of the main physics goals for both the LHC and the ILC. Studies of the top quark have the potential to illuminate this issue; since it is the heaviest of the Standard Model (SM) fermions, the top is expected to couple strongly to the symmetry-breaking sector. Consequently, the structure of that sector can have significant, potentially observable effects on the properties of the top. for example, it is well known that the vector and axial t{bar t}Z form factors receive large corrections (of order 5-10%) in certain models of dynamical electroweak symmetry breaking [1]. At future colliders such as the LHC and the ILC, we will be able to pursue a program of precision top physics, similar to the program studying the Z at LEP and SLC. In this manuscript, they study the corrections to the top quark properties in ''Little Higgs'' models of electroweak symmetry breaking [2], and compare the expected deviations from the SM predictions with expected sensitivities of experiments at the LHC and the ILC. In the Little Higgs models, electroweak symmetry is driven by the radiative effects from the top sector, including the SM-like top and its heavy counterpart, a TeV-scale ''heavy top'' T. Probing this structure experimentally is quite difficult. While the LHC should be able to discover the T quark, its potential for studying its couplings is limited [3,4]. Direct production of the T will likely be beyond the kinematic reach of the ILC. However, we will show below that the corrections to the gauge couplings of the SM top, induced by its mixing with the T, will be observable at the ILC throughout the parameter range consistent with naturalness. Measuring these corrections will provide a unique window on the top sector of the Little Higgs. Many Little Higgs models have been proposed in the literature. We will consider two examples in this study, the ''Littlest Higgs'' model [5], and its variation incorporating T parity [6].

  15. Scaling of Quench Front and Entrainment-Related Phenomena

    SciTech Connect (OSTI)

    Aumiller, D. L.; Hourser, R. J.; Holowach, M. J.; Hochreiter, L. E.; Cheung, F-B.

    2002-04-01

    The scaling of thermal hydraulic systems is of great importance in the development of experiments in laboratory-scale test facilities that are used to replicate the response of full-size prototypical designs. One particular phenomenon that is of interest in experimental modeling is the quench front that develops during the reflood phase in a PWR (Pressurized Water Reactor) following a large-break LOCA (Loss of Coolant Accident). The purpose of this study is to develop a scaling methodology such that the prototypical quench front related phenomena can be preserved in a laboratory-scale test facility which may have material, geometrical, fluid, and flow differences as compared to the prototypical case. A mass and energy balance on a Lagrangian quench front control volume along with temporal scaling methods are utilized in developing the quench front scaling groups for a phenomena-specific second-tier scaling analysis. A sample calculation is presented comparing the quench front scaling groups calculated for a prototypical Westinghouse 17 x 17 PWR fuel design and that of the geometry and material configuration used in the FLECHT SEASET series of experiments.

  16. Electromagnetic energy conversion in downstream fronts from three dimensional kinetic reconnection

    SciTech Connect (OSTI)

    Lapenta, Giovanni [Departement Wiskunde, KU Leuven, Universiteit Leuven (Belgium)] [Departement Wiskunde, KU Leuven, Universiteit Leuven (Belgium); Goldman, Martin; Newman, David [University of Colorado, Colorado 80309 (United States)] [University of Colorado, Colorado 80309 (United States); Markidis, Stefano [High Performance Computing and Visualization (HPCViz) Department, KTH Royal Institute of Technology, Stockholm (Sweden)] [High Performance Computing and Visualization (HPCViz) Department, KTH Royal Institute of Technology, Stockholm (Sweden); Divin, Andrey [Swedish Institute of Space Physics, Uppsala (Sweden)] [Swedish Institute of Space Physics, Uppsala (Sweden)

    2014-05-15

    The electromagnetic energy equation is analyzed term by term in a 3D simulation of kinetic reconnection previously reported by Vapirev et al. [J. Geophys. Res.: Space Phys. 118, 1435 (2013)]. The evolution presents the usual 2D-like topological structures caused by an initial perturbation independent of the third dimension. However, downstream of the reconnection site, where the jetting plasma encounters the yet unperturbed pre-existing plasma, a downstream front is formed and made unstable by the strong density gradient and the unfavorable local acceleration field. The energy exchange between plasma and fields is most intense at the instability, reaching several pW/m{sup 3}, alternating between load (energy going from fields to particles) and generator (energy going from particles to fields) regions. Energy exchange is instead purely that of a load at the reconnection site itself in a region focused around the x-line and elongated along the separatrix surfaces. Poynting fluxes are generated at all energy exchange regions and travel away from the reconnection site transporting an energy signal of the order of about S?10{sup ?3}W/m{sup 2}.

  17. Simulations of table-top watt-class 1?THz radiation sources with two-section periodic structure

    SciTech Connect (OSTI)

    Liu, Weihao, E-mail: liuwhao@ustc.edu.cn; Xu, Zhengyuan [School of Information Science and Technology, and Optical Wireless Communication and Network Center, University of Science and Technology of China, Anhui (China)

    2014-01-07

    Two types of terahertz sources with two-section periodical waveguide structure are studied by simulations. The operation frequency of the rear section (section-II) is the fourth harmonic of that of the front section (section-I), and section-II can operate both in the forward wave region and backward wave region. The critical factor that may affect the proper functioning of this kind of sources—overbunching—is discussed, and the corresponding solutions are proposed. These sources, with millimeter in length, can generate 1?THz wave radiation with power over 1?W, so, they are promising table-top and relatively high power terahertz sources.

  18. LOAD FORECASTING Eugene A. Feinberg

    E-Print Network [OSTI]

    Feinberg, Eugene A.

    , regression, artificial intelligence. 1. Introduction Accurate models for electric power load forecasting to make important decisions including decisions on pur- chasing and generating electric power, load for different operations within a utility company. The natures 269 #12;270 APPLIED MATHEMATICS FOR POWER SYSTEMS

  19. Load Management - A Better Way 

    E-Print Network [OSTI]

    Easley, J. F.

    1982-01-01

    of load management techniques which has enabled the company to shift well over 100,000 kilowatts of customer load from the on-peak period to the off-peak period in the last four to five years. This is helping delay the need for new plants and allows...

  20. Methods for enhancing mapping of thermal fronts in oil recovery

    DOE Patents [OSTI]

    Lee, D.O.; Montoya, P.C.; Wayland, J.R. Jr.

    1984-03-30

    A method for enhancing the resistivity contrasts of a thermal front in an oil recovery production field as measured by the controlled source audio frequency magnetotelluric (CSAMT) technique is disclosed. This method includes the steps of: (1) preparing a CSAMT-determined topological resistivity map of the production field; (2) introducing a solution of a dopant material into the production field at a concentration effective to alter the resistivity associated with the thermal front; said dopant material having a high cation exchange capacity which might be selected from the group consisting of montmorillonite, illite, and chlorite clays; said material being soluble in the conate water of the production field; (3) preparing a CSAMT-determined topological resistivity map of the production field while said dopant material is moving therethrough; and (4) mathematically comparing the maps from step (1) and step (3) to determine the location of the thermal front. This method is effective with the steam flood, fire flood and water flood techniques.

  1. Methods for enhancing mapping of thermal fronts in oil recovery

    DOE Patents [OSTI]

    Lee, David O. (Albuquerque, NM); Montoya, Paul C. (Albuquerque, NM); Wayland, Jr., James R. (Albuquerque, NM)

    1987-01-01

    A method for enhancing the resistivity contrasts of a thermal front in an oil recovery production field as measured by the CSAMT technique is disclosed. This method includes the steps of: (a) preparing a CSAMT-determined topological resistivity map of the production field; (b) introducing a solution of a dopant material into the production field at a concentration effective to alter the resistivity associated with the thermal front; said dopant material having a high cation exchange capacity which might be selected from the group consisting of montmorillonite, illite, and chlorite clays; said material being soluble in the connate water of the production field; (c) preparing a CSAMT-determined topological resistivity map of the production field while said dopant material is moving therethrough; and (d) mathematically comparing the maps from step (a) and step (c) to determine the location of the thermal front. This method is effective with the steam flood, fire flood and water flood techniques.

  2. Acoustic wave front conjugation in a three-phase media

    E-Print Network [OSTI]

    Pushkina, N I

    2015-01-01

    Acoustic wave front reversal is studied in a sandy marine sediment that contains air bubbles in its fluid fraction. The considered phase conjugation is a four-wave nonlinear parametric sound interaction process caused by nonlinear bubble oscillations which are known to be dominant in acoustic nonlinear interactions in three-phase marine sediments. Two various mechanisms of phase conjugation are studied. One of them is based on the stimulated Raman-type sound scattering on resonance bubble oscillations. The second one is associated with sound interactions with bubble oscillations which frequencies are far from resonance bubble frequencies. Nonlinear equations to solve the wave-front conjugation problem are derived, expressions for acoustic wave amplitudes with a reversed wave front are obtained and compared for various frequencies of the excited bubble oscillations.

  3. Acoustic wave front reversal in a three-phase media

    E-Print Network [OSTI]

    N. I. Pushkina

    2015-03-05

    Acoustic wave front conjugation is studied in a sandy marine sediment that contains air bubbles in its fluid fraction. The considered phase conjugation is a four-wave nonlinear parametric sound interaction process caused by nonlinear bubble oscillations which are known to be dominant in acoustic nonlinear interactions in three-phase marine sediments. Two various mechanisms of phase conjugation are studied. One of them is based on the stimulated Raman-type sound scattering on resonance bubble oscillations. The second one is associated with sound interactions with bubble oscillations which frequencies are far from resonance bubble frequencies. Nonlinear equations to solve the wave-front conjugation problem are derived, expressions for acoustic wave amplitudes with a reversed wave front are obtained and compared for various frequencies of the excited bubble oscillations.

  4. Vehicle Technologies Program: Goals, Strategies, and Top Accomplishments (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2010-12-01

    Fact sheet describes the Vehicle Technologies Program and its goals, strategies and top accomplishments.

  5. TOP QUARK PHYSICS AT THE NLC CARL R. SCHMIDT

    E-Print Network [OSTI]

    Schmidt, Carl

    TOP QUARK PHYSICS AT THE NLC CARL R. SCHMIDT Santa Cruz Institute for Particle Physics University) is an excellent tool for studying the properties of the top quark. In this talk I review some of the theory of top, is an ideal tool for studying the properties of the top quark. The event environment in e + e \\Gamma

  6. top 3 winners receive one of the following

    E-Print Network [OSTI]

    Rock, Chris

    top 3 winners receive one of the following: · iPad® · GoPro® Camera · Mountain Bike TOP 20 AT THE COMMONS FOR THE REMAINDER OF THE SEMESTER! TOP THAT AT TEXAS TECH! Sauce It, Stack It, Slice It. Any Way Pizza Contest TOP THAT! CREATIVE PIZZA CONTEST ENTRY FORM JUDGING CRITERIA: Among all qualified entries

  7. Top Physics at the Tevatron Cecilia E. Gerber

    E-Print Network [OSTI]

    Gerber, Cecilia E.

    Top Physics at the Tevatron Cecilia E. Gerber University of Illinois-Chicago 2008 Linear Collider · Motivation Introduction to top production and decay· Introduction to top production and decay · Studies of Top quark pair production and decay properties ­ Is the SM correct? ­ Model-dependent searches

  8. Top Mass Measurements with the D0 Detector

    E-Print Network [OSTI]

    Daniel Boline

    2015-01-18

    I present recent results related to the measurement of the top quark mass, using $p\\bar{p}$ collisions recorded with the D{\\O}Detector at the Tevatron. The results are: A direct measurement of the mass difference between top and anti-top quarks, Measurement of the top quark mass in the lepton+jets channel and in the dilepton channel.

  9. Top-percentile traffic routing problem by Dynamic Programming

    E-Print Network [OSTI]

    Grothey, Andreas

    Top-percentile traffic routing problem by Dynamic Programming Andreas Grothey, Xinan Yang School according to top-percentile pricing. We call this problem the Top-percentile Traffic Routing Problem (Tp problem, which is hard to solve due to the integer variables introduced by top-percentile pricing. Several

  10. Top Quark Physics at the ILC: Methods and Meanings

    E-Print Network [OSTI]

    Zack Sullivan

    2009-03-06

    The physics case for studying top-quark physics at the International Linear Collider is well established. This summary places in context the top-quark physics goals, examines the current state-of-the art in understanding of the top-quark mass, and identifies some areas in which the study of the top-quark mass enhances our understanding of new techniques.

  11. Materials Technologies: Goals, Strategies, and Top Accomplishments (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2010-08-01

    Document details the goals, strategies, and top accomplishments of DOE's Materials Technologies subprogram.

  12. Beef customer satisfaction: factors affecting consumer evaluations of clod, top round, and top sirloin steaks 

    E-Print Network [OSTI]

    Goodson, Kyla Judene

    2000-01-01

    by either USDA grade or marinade. Flavor Like was the sensory trait most closely related to customer satisfaction of clod and top round steaks. Top sirloin steaks were evaluated by a different population of consumers in Chicago. One half of the consumers...

  13. Top polarization as a probe of new physics

    E-Print Network [OSTI]

    Rohini M Godbole; Saurabh D Rindani; Kumar Rao; Ritesh K Singh

    2010-04-16

    We investigate the effects of new physics scenarios containing a high mass vector resonance on top pair production at the LHC, using the polarization of the produced top. In particular we use kinematic distributions of the secondary lepton coming from top decay, which depends on top polarization, as it has been shown that the angular distribution of the decay lepton is insensitive to the anomalous tbW vertex and hence is a pure probe of new physics in top quark production. Spin sensitive variables involving the decay lepton are used to probe top polarization. Some sensitivity is found for the new couplings of the top.

  14. High-order threshold corrections for top-pair and single-top production

    E-Print Network [OSTI]

    Nikolaos Kidonakis

    2015-09-25

    I present results for high-order corrections from threshold resummation to cross sections and differential distributions in top-antitop pair production and in single-top production. I show aN$^3$LO results for the total $t{\\bar t}$ cross section as well as for the top-quark transverse momentum ($p_T$) and rapidity distributions, and the top-quark forward-backward asymmetry in $t{\\bar t}$ production. I compare with the most recent Tevatron and LHC data, including at 13 TeV. I also present aNNLO results for cross sections and $p_T$ distributions in $t$-channel, $s$-channel, and $tW$-channel single-top production.

  15. Physics Beyond the Single Top Quark Observation

    SciTech Connect (OSTI)

    Heinson, A.P.; Collaboration, for the DZero

    2010-10-01

    In March 2009, the D0 Collaboration first observed the electroweak production of single top quarks at 5{sigma} significance. We measured the cross section for the combined s-channel and t-channel production modes, and set a lower limit on the CKM matrix element |V{sub tb}|. Since then, we have used the same dataset to measure the t-channel production mode independently, the combined cross section in the hadronically-decaying tau lepton final state, and the width and lifetime of the top quark, and we have set upper limits on contributions from anomalous flavor-changing neutral currents. This paper describes these new measurements, as presented at the 3rd International Workshop on Top Quark Physics, held in Brugge, Belgium, May 31-June 4, 2010.

  16. CDF/TOP/DOC/6548 Version 1.1

    E-Print Network [OSTI]

    CDF/TOP/DOC/6548 Version 1.1 July 1, 2003 Description of data samples for Top Group for Summer 2003 T electron and muon data sam- ples which will be used for Top group analysis results for Summer 2003 conferences. Up-to-date information on these samples is available from the Top Group Data page http://www-cdf.fnal.gov/internal/physics/top

  17. Recent Results of Top Quark Physics from the Tevatron

    E-Print Network [OSTI]

    R. Y. Peters; on behalf of the D0; CDF collaborations

    2015-07-09

    Twenty years after its discovery in 1995 by the CDF and D0 collaborations at the Tevatron proton-antiproton collider at Fermilab, the top quark still undergoes intensive studies at the Tevatron and the LHC at CERN. In this article, recent top quark physics results from CDF and D0 are reported. In particular, measurements of single top quark and double top quark production, the ttbar forward-backward asymmetry and the top quark mass are discussed.

  18. TOP-COP: Mining TOP-K Strongly Correlated Pairs in Large Databases MSIS Department, Rutgers University

    E-Print Network [OSTI]

    Xiong, Hui

    TOP-COP: Mining TOP-K Strongly Correlated Pairs in Large Databases Hui Xiong MSIS Department. To this end, we propose an alterna- tive task: mining the top-k strongly correlated pairs. In this paper, we an efficient algorithm, called TOP-COP to exploit this prop- erty to effectively prune many pairs even without

  19. A measurement of the top quark's charge

    SciTech Connect (OSTI)

    Unalan, Zeynep Gunay; /Michigan State U.

    2007-11-01

    The top quark was discovered in 1995 at the Fermilab National Accelerator Laboratory (Fermilab). One way to confirm if the observed top quark is really the top quark posited in the Standard Model (SM) is to measure its electric charge. In the Standard Model the top quark is the isospin partner of the bottom quark and is expected to have a charge of +2/3. However, an alternative 'exotic' model has been proposed with a fourth generation exotic quark that has the same characteristics, such as mass, as our observed top but with a charge of -4/3. This thesis presents the first CDF measurement of the top quark's charge via its decay products, a W boson and a bottom quark, using {approx} 1 fb{sup -1} of data. The data were collected by the CDF detector from proton anti-proton (p{bar p}) collisions at {radical}s = 1.96 TeV at Fermilab. We classify events depending on the charges of the bottom quark and associated W boson and count the number of events which appear 'SM-like' or 'exotic-like' with a SM-like event decaying as t {yields} W{sup +}b and an exotic event as t {yields} W{sup -}b. We find the p-value under the Standard Model hypothesis to be 0:35 which is consistent with the Standard Model. We exclude the exotic quark hypothesis at an 81% confidence level, for which we have chosen a priori that the probability of incorrectly rejecting the SM would be 1%. The calculated Bayes Factor (BF) is 2 x Ln(BF)=8.54 which is interpreted as the data strongly favors the Standard Model over the exotic quark hypothesis.

  20. TOP500 Supercomputers for November 2003

    SciTech Connect (OSTI)

    Strohmaier, Erich; Meuer, Hans W.; Dongarra, Jack; Simon, Horst D.

    2003-11-16

    22nd Edition of TOP500 List of World s Fastest Supercomputers Released MANNHEIM, Germany; KNOXVILLE, Tenn.; BERKELEY, Calif. In what has become a much-anticipated event in the world of high-performance computing, the 22nd edition of the TOP500 list of the worlds fastest supercomputers was released today (November 16, 2003). The Earth Simulator supercomputer retains the number one position with its Linpack benchmark performance of 35.86 Tflop/s (''teraflops'' or trillions of calculations per second). It was built by NEC and installed last year at the Earth Simulator Center in Yokohama, Japan.

  1. Variational generalization of free relativistic top

    E-Print Network [OSTI]

    Roman Matsyuk

    2014-07-25

    We prove that well known first-order (in spin, momentum, and space-time coordinates) equations of motion of relativistic top are equivalent to the third-order equations of Mathisson on the surface of the Mathisson-Pirani auxiliary constraint. We then consider these third-order equations in flat space-time with constant spin 4-vector and invent a Lagrange function for them. Allowing physical interpretation to be applied to the complete set of extremals yields a whole spectrum of spin-dependent effective 'proper mass' of the relativistic top.

  2. Top Quark Spin Correlations at the Tevatron

    SciTech Connect (OSTI)

    Head, Tim; /Manchester U.

    2010-07-01

    Recent measurements of the correlation between the spin of the top and the spin of the anti-top quark produced in proton anti-proton scattering at a center of mass energy of {radical}s = 1.96 Tev by the CDF and D0 collaborations are discussed. using up to 4.3 fb{sup -1} of data taken with the CDF and D0 detectors the spin correlation parameter C, the degree to which the spins are correlated, is measured in dileptonic and semileptonic final states. The measurements are found to be in agreement with Standard Model predictions.

  3. Building a Better Boosted Top Tagger

    E-Print Network [OSTI]

    Andrew J. Larkoski; Ian Moult; Duff Neill

    2015-02-22

    Distinguishing hadronically decaying boosted top quarks from massive QCD jets is an important challenge at the Large Hadron Collider. In this paper we use the power counting method to study jet substructure observables designed for top tagging, and gain insight into their performance. We introduce a powerful new family of discriminants formed from the energy correlation functions which outperform the widely used N-subjettiness. These observables take a highly non-trivial form, demonstrating the importance of a systematic approach to their construction.

  4. Single Top Production at the Tevatron

    E-Print Network [OSTI]

    A. Gresele

    2006-05-13

    We report on a search for Standard Model t-channel ans s-channel single top quark production in p-pbar collisions at a center of mass energy of 1.96 TeV. We use a data sample corresponding to 0.7 fb-1 recorded by the upgraded Collider Detector at Fermilab (CDFII) and a data sample corresponding to 370 pb-1 recorded by D0. Both CDF and D0 find no significant evidence for electroweak top quark production and set upper limits at the 95 % confidence level on the production cross section

  5. Spinning Reserve from Responsive Load

    SciTech Connect (OSTI)

    Kueck, John D; Kirby, Brendan J; Laughner, T; Morris, K

    2009-01-01

    As power system costs rise and capacity is strained demand response can provide a significant system reliability benefit at a potentially attractive cost. The 162 room Music Road Hotel in Pigeon Forge Tennessee agreed to host a spinning reserve test. The Tennessee Valley Authority (TVA) supplied real-time metering and monitoring expertise to record total hotel load during both normal operations and testing. Preliminary testing showed that hotel load can be curtailed by 22% to 37% depending on the outdoor temperature and the time of day. The load drop was very rapid, essentially as fast as the 2 second metering could detect.

  6. Development of RF CMOS receiver front-ends for ultrawideband 

    E-Print Network [OSTI]

    Guan, Xin

    2009-05-15

    .5dB and a noise figure of 3.3-4.5dB from 3-9.5GHz, while only consuming 9mW power. Based on the distributed amplifier and resistive shunt-feedback amplifier designs, two UWB RF front-ends are developed. One is a distributed LNA-Mixer. Unlike...

  7. On the propagation of a coupled saturation and pressure front

    SciTech Connect (OSTI)

    Vasco, D. W.

    2010-12-01

    Using an asymptotic technique, valid for a medium with smoothly varying heterogeneity, I derive an expression for the velocity of a propagating, coupled saturation and pressure front. Due to the nonlinearity of the governing equations, the velocity of the propagating front depends upon the magnitude of the saturation and pressure changes across the front in addition to the properties of the medium. Thus, the expression must be evaluated in conjunction with numerical reservoir simulation. The propagation of the two-phase front is governed by the background saturation distribution, the saturation-dependent component of the fluid mobility, the porosity, the permeability, the capillary pressure function, the medium compressibility, and the ratio of the slopes of the relative permeability curves. Numerical simulation of water injection into a porous layer saturated with a nonaqueous phase liquid indicates that two modes of propagation are important. The fastest mode of propagation is a pressure-dominated disturbance that travels through the saturated layer. This is followed, much later, by a coupled mode with a large saturation change. These two modes are also observed in a simulation using a heterogeneous porous layer. A comparison between the propagation times estimated from the results of the numerical simulation and predictions from the asymptotic expression indicates overall agreement.

  8. Propagating front in an excited granular layer W. Losert,1

    E-Print Network [OSTI]

    Gollub, Jerry P.

    that produces a rapid transition. We measure the front velocity as a function of the applied acceleration and the mechanisms of transitions between phases are of great interest. Although there are no attractive a triggered phase transition that transforms a quiescent disordered phase to an excited granu- lar gas via

  9. Acceleration at shock fronts. Lecture 2 D. B. MELROSE

    E-Print Network [OSTI]

    Melrose, Don

    Fiiica #12;upstream downstream shock Fig. 1.- The changes in fluid velocity and magnetic field across. The upstream magnetic field is at an angle to n,and this changes to $2 in the downstream region. equal front is at rest, with the upstream plasma flowing into it at a velocity ul and the downstream plasma

  10. ON THE FRONT COVER Kristen Barnes | Fifth year

    E-Print Network [OSTI]

    Acton, Scott

    Moul | Third year Sheridan Fuller | Third year Harry Whelchel | Fourth year ON THE BACK COVER Lukef a c t b o ok2012 #12;ON THE FRONT COVER Kristen Barnes | Fifth year Darren Daniels | First year William R. Richardson | Third year Alyson Richardson | Third year Chris Bergin | First year Shakye Jones

  11. Flame front tracking by laser induced fluorescence spectroscopy and advanced

    E-Print Network [OSTI]

    Hamarneh, Ghassan

    surface characteristics in turbulent premixed propane/air combustion," Combustion and Flame 120(4), 407 References and links 1. J. Warnatz, U. Maas, and R.W. Dibble, Combustion - physical and chemical fundamentals, "Characterization of flame front surfaces in turbulent premixed methane/air combustion," Combustion and Flame 101

  12. 1 1999 Rational Software Corporation The View from the Front

    E-Print Network [OSTI]

    Demurjian, Steven A.

    1 ©1999 Rational Software Corporation 3/7/99 R UML The View from the Front James Rumbaugh 9 March 1999 Rational Software Corporation #12; 2 ©1999 Rational Software Corporation 3/7/99 R Evolution Start 1/95 UML 1.3 RTF report 4/99 OMG feedback #12; 3 ©1999 Rational Software Corporation 3/7/99 R UML

  13. Travel Reimbursement Request Form Submit to: Front Desk

    E-Print Network [OSTI]

    Rose, Michael R.

    Travel Reimbursement Request Form Submit to: Front Desk Department of Pharmaceutial Sciences 147 expenses) If travel time does not include overnight stay (between 7AM - 8PM), the traveler should not claim before 11 AM and arrival after 2 PM; dinner - departure before 5 PM. PM and arrival after 7 PM NOTE

  14. Travel Reimbursement Request Form Submit to: Front Desk

    E-Print Network [OSTI]

    Loudon, Catherine

    Travel Reimbursement Request Form Submit to: Front Desk Department of Pharmaceutical Sciences 147 : Maximum: $71.00 (Itemize meal expenses) If travel time does not include overnight stay (between 7AM - 8PM; lunch - departure before 11 AM and arrival after 2 PM; dinner - departure before 5 PM. PM and arrival

  15. Shielded RF Lattice for the Muon Front End Chris Rogers,

    E-Print Network [OSTI]

    McDonald, Kirk

    Shielded RF Lattice for the Muon Front End Chris Rogers, Accelerator Science and Technology Centre (ASTeC), Rutherford Appleton Laboratory #12; Shielded RF Lattice I wanted to remind folks a lot of slides apologies I've tried to break it up a bit #12; Part 1 Shielded Lattice Baseline

  16. Effective Field Theory for Top Quark Physics

    E-Print Network [OSTI]

    Cen Zhang; Scott Willenbrock

    2010-08-18

    Physics beyond the standard model can affect top-quark physics indirectly. We describe the effective field theory approach to describing such physics, and contrast it with the vertex-function approach that has been pursued previously. We argue that the effective field theory approach has many fundamental advantages and is also simpler.

  17. TOP VALUEIN THE NATION --Kiplinger's Personal Finance

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    TOP VALUEIN THE NATION --Kiplinger's Personal Finance and The Princeton Review HOW TO FINANCE YOUR's public -- a price that says value. Many students look for ways to finance their cost of attendance. Binghamton can assist you with understanding financing options including student and parent loans

  18. SPA's Top 10 Summer Research Salary

    E-Print Network [OSTI]

    Kroll, Kristen L.

    09/08 SPA's Top 10 Summer Research Salary 1. Faculty with academic year appointments may expend is called Summer Research Salary (SRS) and it's charged to sponsored funds during the months June, July will be required to certify the salaries charged to these projects via a Personnel Activity Report (PAR or ePAR). 3

  19. Rigid Top Plate Electronics Feed-through

    E-Print Network [OSTI]

    Sample SupportRod Vessel Head Rigid Top Plate Electronics Feed-through Aluminum Standard Ultrasonic measurement assembly. For seismic frequencies, strains are measured on both the sample and aluminum standard and exchange of pore fluids independent of confining pressure. #12;1. Ends flat and parallel (length should = 2

  20. Spectrum generating algebra of the symmetric top

    E-Print Network [OSTI]

    R. Bijker; A. Leviatan

    1997-08-28

    We consider an algebraic treatment of a three-body system. We develop the formalism for a system of three identical objects and show that it provides a simultaneous description of the vibrational and rotational excitations of an oblate symmetric top.

  1. Electrical and Production Load Factors 

    E-Print Network [OSTI]

    Sen, Tapajyoti

    2010-07-14

    Load factors are an important simplification of electrical energy use data and depend on the ratio of average demand to peak demand. Based on operating hours of a facility they serve as an important benchmarking tool for the industrial sector...

  2. Sandia Wind Turbine Loads Database

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

    The Sandia Wind Turbine Loads Database is divided into six files, each corresponding to approximately 16 years of simulation. The files are text files with data in columnar format. The 424MB zipped file containing six data files can be downloaded by the public. The files simulate 10-minute maximum loads for the NREL 5MW wind turbine. The details of the loads simulations can be found in the paper: “Decades of Wind Turbine Loads Simulations”, M. Barone, J. Paquette, B. Resor, and L. Manuel, AIAA2012-1288 (3.69MB PDF). Note that the site-average wind speed is 10 m/s (class I-B), not the 8.5 m/s reported in the paper.

  3. Building load control and optimization

    E-Print Network [OSTI]

    Xing, Hai-Yun Helen, 1976-

    2004-01-01

    Researchers and practitioners have proposed a variety of solutions to reduce electricity consumption and curtail peak demand. This research focuses on load control by improving the operations in existing building HVAC ...

  4. Loading and conjugating cavity biostructures

    DOE Patents [OSTI]

    Hainfeld, J.F.

    1997-11-25

    Methods for the preparation and use of a biological delivery system are disclosed. The method of preparation includes the loading of a non-biological material into a biostructure having a load-bearing structure. The method also includes the removal of some of the biostructure`s contents and the loading of a non-biological material into the biostructure. The biostructure is biologically compatible with the host, and preferably is derived from the host, the host`s species or a related species. The loaded biostructure is used directly, or it can be targeted to specific cells, tissues and/or organs within a host. The targeted biostructure can be used to deliver the non-biological material to a specified tissue, organ or cell within a host for diagnostic, therapeutic or other purposes. 11 figs.

  5. Demand Response: Load Management Programs 

    E-Print Network [OSTI]

    Simon, J.

    2012-01-01

    Management Programs CATEE Conference October, 2012 Agenda Outline I. General Demand Response Definition II. General Demand Response Program Rules III. CenterPoint Commercial Program IV. CenterPoint Residential Programs V. Residential Discussion... Points Demand Response Definition of load management per energy efficiency rule 25.181: ? Load control activities that result in a reduction in peak demand, or a shifting of energy usage from a peak to an off-peak period or from high-price periods...

  6. Structural assessment of accident loads

    SciTech Connect (OSTI)

    Wagenblast, G.R., Westinghouse Hanford

    1996-05-28

    Structural assessments were made for specific accident loads for specific catch, receiver, and storage tanks. The evaluation herein represents level-of-effort order-of-magnitude estimates of limiting loads that would lead to collapse or rupture of the tank and unmitigated loss of confinement for the waste. Structural capacities were established using failure criteria. Compliance with codes such as ACI, ASCE, ASME, RCRA, UBC, WAC, and DOE Orders was `NOT` maintained. Normal code practice is to prevent failure with margins consistent with expected variations in loads and strengths and confidence in analysis techniques. The evaluation herein represent estimates of code limits without code load factors or code strength reduction factors, and loading beyond such a limit is considered as an onset of some failure mode. The exact nature of the failure mode and its relation to a safe condition is a judgment of the analyst. Consequently, these `RESULTS SHALL NOT BE USED TO ESTABLISH OPERATING OR SAFETY LOAD LIMITS FOR THESE TANKS`.

  7. Singular front formation in a model for quasigeostrophic flow Peter Constantin

    E-Print Network [OSTI]

    Tabak, Esteban G.

    Singular front formation in a model for quasigeostrophic flow Peter Constantin Department of Mathematics, University of Chicago, Chicago, Illinois 60637 Andrew J. Majda Department of Mathematics, whether it predicts the formation of sharp fronts associated with boundaries between air masses

  8. Designing and Testing a New Shack-Hartmann High Bandwidth Two-Dimensional Wave front Sensor

    E-Print Network [OSTI]

    Gordeyev, Stanislav

    Designing and Testing a New Shack-Hartmann High Bandwidth Two-Dimensional Wave front Sensor Shaddy Dame, Notre Dame, IN 46656 A novel Shack-Hartmann high bandwidth two-dimensional wave front sensor

  9. Modified Anti-de-Sitter Metric, Light-Front Quantized QCD, and...

    Office of Scientific and Technical Information (OSTI)

    Modified Anti-de-Sitter Metric, Light-Front Quantized QCD, and Conformal Quantum Mechanics Citation Details In-Document Search Title: Modified Anti-de-Sitter Metric, Light-Front...

  10. Cooling load design tool for UFAD systems.

    E-Print Network [OSTI]

    Bauman, Fred; Schiavon, Stefano; Webster, Tom; Lee, Kwang Ho

    2010-01-01

    De- velopment of a Simplified Cooling Load Design Tool forand C. Benedek. 2007. “Cooling airflow design calculationscalculation method for design cooling loads in underfloor

  11. 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...

  12. Load Participation in Ancillary Services Workshop Report

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

    controls on the load-side is growing. Driven by improved and widely available communications systems, load participation is becoming easier and more reliable; and there...

  13. Self-aligning biaxial load frame

    DOE Patents [OSTI]

    Ward, M.B.; Epstein, J.S.; Lloyd, W.R.

    1994-01-18

    An self-aligning biaxial loading apparatus for use in testing the strength of specimens while maintaining a constant specimen centroid during the loading operation. The self-aligning biaxial loading apparatus consists of a load frame and two load assemblies for imparting two independent perpendicular forces upon a test specimen. The constant test specimen centroid is maintained by providing elements for linear motion of the load frame relative to a fixed cross head, and by alignment and linear motion elements of one load assembly relative to the load frame. 3 figures.

  14. Measurement of Top-Quark Polarization in t-channel Single-Top Production

    E-Print Network [OSTI]

    Matthias Komm; for the CMS Collaboration

    2014-11-29

    The measurement of the top quark polarization, sensitive to the electroweak coupling structure, in t-channel single-top production is presented. Events are analyzed corresponding to an integrated luminosity of approximately $20~\\mathrm{fb^{-1}}$ recorded with the CMS detector during pp collisions at $\\sqrt{s}=8~\\mathrm{TeV}$. By requiring one isolated lepton (muon or electron), two jets, and missing transverse energy, an angular asymmetry, sensitive to the polarization of the top quark, is reconstructed in the top-quark rest frame. The corresponding angular asymmetry at parton level is inferred from data in a phase space with enhanced single-top t-channel candidates through unfolding. Remaining background contributions are estimated through a ML-fit and subtracted. A polarization of $P_{t}=0.82\\pm0.12\\mathrm{~(stat.)}\\pm0.32\\mathrm{~(syst.)}$ is measured assuming a spin-analyzing power of the charged lepton stemming from the top decay of $100\\%$.

  15. High power water load for microwave and millimeter-wave radio frequency sources

    DOE Patents [OSTI]

    Ives, R. Lawrence (Saratoga, CA); Mizuhara, Yosuke M. (Palo Alto, CA); Schumacher, Richard V. (Sunnyvale, CA); Pendleton, Rand P. (Saratoga, CA)

    1999-01-01

    A high power water load for microwave and millimeter wave radio frequency sources has a front wall including an input port for the application of RF power, a cylindrical dissipation cavity lined with a dissipating material having a thickness which varies with depth, and a rear wall including a rotating reflector for the reflection of wave energy inside the cylindrical cavity. The dissipation cavity includes a water jacket for removal of heat generated by the absorptive material coating the dissipation cavity, and this absorptive material has a thickness which is greater near the front wall than near the rear wall. Waves entering the cavity reflect from the rotating reflector, impinging and reflecting multiple times on the absorptive coating of the dissipation cavity, dissipating equal amounts of power on each internal reflection.

  16. Air-sea interaction at an oceanic front: Implications for frontogenesis and primary production

    E-Print Network [OSTI]

    Chen, .Dake

    winds at sharp oceanic fronts, suggesting a potentially important role played by local airAir-sea interaction at an oceanic front: Implications for frontogenesis and primary production Dake a significant air-sea interaction at the shelf- break front in the East China Sea. An idealized ocean

  17. Rapid uplift of nonmethane hydrocarbons in a cold front over central Europe

    E-Print Network [OSTI]

    Arnold, Steve

    Rapid uplift of nonmethane hydrocarbons in a cold front over central Europe R. M. Purvis,1 A. C of a cold front, a rapid uplift of reactive carbon from the boundary layer to the mid free troposphere, convection Citation: Purvis, R. M., et al., Rapid uplift of nonmethane hydrocarbons in a cold front over

  18. Wave-front generation of Zernike polynomial modes with a micromachined membrane

    E-Print Network [OSTI]

    Fainman, Yeshaiahu

    Wave-front generation of Zernike polynomial modes with a micromachined membrane deformable mirror the characteristics of a 37-channel micromachined membrane deformable mirror for wave-front generation. We demonstrate wave-front generation of the first 20 Zernike polynomial modes, using an iterative algorithm to adjust

  19. {Control of Residential Load Management Networks Using Real Time Pricing

    E-Print Network [OSTI]

    Burke, William Jerome

    2010-01-01

    modeling and control of load management. Further, withoutA profit-based load management using linear programming”.with applica- tions to load management assessment and load

  20. Staying FIT: Efficient Load Shedding Techniques for Distributed Stream Processing

    E-Print Network [OSTI]

    . Bottlenecks slow down processing and network transmission, and cause delayed outputs. Load management has been. Common load management techniques include adaptive load distribution, admis- sion control, and load

  1. Top Incomes in the Long Run of History

    E-Print Network [OSTI]

    Atkinson, Anthony B.; Piketty, Thomas; Saez, Emmanuel

    2012-01-01

    in top income shares in Finland,” Atkinson, A. B. and T.Singapore Argentina Sweden Finland Norway Share of top 0.1U/L-shaped),1900- 2006 Sweden Finland Norway Spain Portugal

  2. Energy profile of b-jet for boosted top quarks

    E-Print Network [OSTI]

    Yoshio Kitadono

    2014-09-05

    We analyse the semileptonic decay of a polarised top-quark with a large velocity based on the perturbative QCD factorisation framework. Thanks to the factorisation and the spin decomposition, the production part and the decay part can be factorised and the spin dependence is introduced in the decay part. The decay part is converted to the top-jet function which describes the distribution of jet observables and the spin is translated to the helicity of the boosted top. Using this top-jet function, the energy profile of b-jet is investigated and it is turned out that the sub-jet energy for the helicity-minus top is accumulated faster than that for the helicity-plus top. This behaviour for the boosted top can be understood with the negative spin-analysing-power of b-quark in the polarised-top decay.

  3. Building America Top Innovations 2013 Profile - Zero Energy-Ready...

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

    Building America Top Innovations 2013 Profile - Zero Energy-Ready Single-Family Homes Building America Top Innovations 2013 Profile - Zero Energy-Ready Single-Family Homes Many...

  4. Top Quark Properties at the TeVatron

    E-Print Network [OSTI]

    Yvonne Peters for the CDF; D0 Collaborations

    2011-03-29

    Discovered in 1995 by CDF and D0 at the Fermilab Tevatron collider, the top quark remains interesting to test the Standard Model. Having collected more than 7 fb$^{-1}$ of integrated luminosity with both experiments until today, several top quark properties have been measured with increasing precision, while other properties have been investigated for the first time. In this article recent measurements of top quark properties from CDF and D0 are presented, using between 1 fb$^{-1}$ and 4.8 fb$^{-1}$ of data. In particular, the measurement of the top quark mass, the top quark width, the top antitop mass difference, a check of the electric charge of the top quark, measurements of the top antitop quark spin correlation and W helicity as well as a search for charged Higgs bosons are discussed.

  5. Top 3 Takeaways from the Deputy Energy Secretary's Beijing Speech...

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

    Top 3 Takeaways from the Deputy Energy Secretary's Beijing Speech Top 3 Takeaways from the Deputy Energy Secretary's Beijing Speech April 14, 2015 - 12:27pm Addthis Deputy Energy...

  6. The 'America's Next Top Energy Innovator' Challenge Begins Today...

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

    The 'America's Next Top Energy Innovator' Challenge Begins Today The 'America's Next Top Energy Innovator' Challenge Begins Today May 2, 2011 - 12:02pm Addthis Lasers used for...

  7. Building America Top Innovations 2013 Profile - Zero Energy-Ready...

    Energy Savers [EERE]

    Top Innovations 2013 Profile - Zero Energy-Ready Single-Family Homes Building America Top Innovations 2013 Profile - Zero Energy-Ready Single-Family Homes Many Building America...

  8. NETL's New Supercomputer Ranks Among the World's Top 100 | Department...

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

    Computer for Energy and the Environment (HPCEE) is not only on the TOP500 list as one of the top 100 supercomputers in the world--currently ranked at 55--but it is...

  9. NERSC's Hopper is Among World's Top 10 Fastest Computers

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

    Hopper Among World's Top 10 Fastest Computers Hopper Among World's Top 10 Fastest Computers One of only 10 Petaflops Systems Worldwide June 17, 2011 | Tags: Hopper, NERSC Linda Vu,...

  10. Measurement of the top quark pair production cross section in...

    Office of Scientific and Technical Information (OSTI)

    Measurement of the top quark pair production cross section in proton-proton collisions at sqrts13 TeV Citation Details In-Document Search Title: Measurement of the top quark...

  11. TOP500 Supercomputers for June 2003

    SciTech Connect (OSTI)

    Strohmaier, Erich; Meuer, Hans W.; Dongarra, Jack; Simon, Horst D.

    2003-06-23

    21st Edition of TOP500 List of World's Fastest Supercomputers Released MANNHEIM, Germany; KNOXVILLE, Tenn.;&BERKELEY, Calif. In what has become a much-anticipated event in the world of high-performance computing, the 21st edition of the TOP500 list of the world's fastest supercomputers was released today (June 23, 2003). The Earth Simulator supercomputer built by NEC and installed last year at the Earth Simulator Center in Yokohama, Japan, with its Linpack benchmark performance of 35.86 Tflop/s (teraflops or trillions of calculations per second), retains the number one position. The number 2 position is held by the re-measured ASCI Q system at Los Alamos National Laboratory. With 13.88 Tflop/s, it is the second system ever to exceed the 10 Tflop/smark. ASCIQ was built by Hewlett-Packard and is based on the AlphaServerSC computer system.

  12. TOP500 Supercomputers for November 2002

    SciTech Connect (OSTI)

    Strohmaier, Erich; Meuer, Hans W.; Dongarra, Jack; Simon, Horst D.

    2002-11-15

    20th Edition of TOP500 List of World's Fastest Supercomputers Released MANNHEIM, Germany; KNOXVILLE, Tenn.;&BERKELEY, Calif. In what has become a much-anticipated event in the world of high-performance computing, the 20th edition of the TOP500 list of the world's fastest supercomputers was released today (November 15, 2002). The Earth Simulator supercomputer installed earlier this year at the Earth Simulator Center in Yokohama, Japan, is with its Linpack benchmark performance of 35.86 Tflop/s (trillions of calculations per second) retains the number one position. The No.2 and No.3 positions are held by two new, identical ASCI Q systems at Los Alamos National Laboratory (7.73Tflop/s each). These systems are built by Hewlett-Packard and based on the Alpha Server SC computer system.

  13. The heavy top quark and supersymmetry

    SciTech Connect (OSTI)

    Hall, L.J. [Lawrence Berkeley Lab., CA (United States); [Univ. of California, Berkeley, CA (United States)

    1997-01-01

    Three aspects of supersymmetric theories are discussed: electroweak symmetry breaking, the issues of flavor, and gauge unification. The heavy top quark plays an important, sometimes dominant, role in each case. Additional symmetries lead to extensions of the Standard Model which can provide an understanding for many of the outstanding problems of particle physics. A broken supersymmetric extension of spacetime allows electroweak symmetry breaking to follow from the dynamics of the heavy top quark; an extension of isospin provides a constrained framework for understanding the pattern of quark and lepton masses; and a grand unified extension of the Standard Model gauge group provides an elegant understanding of the gauge quantum numbers of the components of a generation. Experimental signatures for each of these additional symmetries are discussed.

  14. Top Quark Production Measurements at ATLAS

    E-Print Network [OSTI]

    Robert Calkins; for the ATLAS Collaboration

    2011-10-05

    An overview of top quark production measurements using the ATLAS detector at the LHC is presented. Using 35 pb^-1 of data, we measured the ttbar cross-section in the lepton+jets channel to 13% precision and set limits on the cross-section for the all hadronic decay channel. The measurement in the dilepton channel was performed using 0.70 fb^-1 of data and was combined with the lepton+jets channel result for our most precise ttbar cross-section measurement of \\sigma(ttbar+X) =176 +- 5(stat) +13 -10 (syst) +-7(lumi). Single top production was also measured in the t-channel using 0.70 fb^-1 of data.

  15. Application of object oriented programming techniques in front end computers

    SciTech Connect (OSTI)

    Skelly, J.F. [Brookhaven National Lab., Upton, NY (United States). AGS Dept.

    1997-11-01

    The Standard Model for accelerator control systems describes two levels of computers, often called Console Level Computers (CLCs) and Front End Computers (FECs), joined by a network. The Front End Computer (FEC) environment imposes special demands on software, beyond real time performance and robustness. FEC software must manage a diverse inventory of devices with individualistic timing requirements and hardware interfaces. It must implement network services which export device access to the control system at large, interpreting a uniform network communications protocol into the specific control requirements of the individual devices. Object oriented languages provide programming techniques which neatly address these challenges, and also offer benefits in terms of maintainability and flexibility. Applications are discussed which exhibit the use of inheritance, multiple inheritance and inheritance trees, and polymorphism to address the needs of FEC software.

  16. Top 10 Problems on Massive Stars

    E-Print Network [OSTI]

    Cassio Barbosa; Donald Figer

    2005-10-18

    We have asked a number of researchers to compile their lists of the top 10 problems in the field of massive stars. This paper is a compilation of these lists. We attempted to survey observers and theorists and those studying all evolutionary stages in the lives of massive stars. Each list reflects the proposer's personal point of view, but hopefully, this compilation will motivate new young astronomers and begin a new series of discussion.

  17. Algebraic model of an oblate top

    E-Print Network [OSTI]

    R. Bijker; A. Leviatan

    1996-12-13

    We consider an algebraic treatment of a three-body system. In particular, we develop the formalism for a system of three identical objects and discuss an application to nonstrange baryon resonances which are interpreted as vibrational and rotational excitations of an oblate symmetric top. We derive closed expressions for a set of elementary form factors that appear in the calculation of both electromagnetic, strong and weak couplings of baryons.

  18. Painleve VI, Rigid Tops and Reflection Equation

    E-Print Network [OSTI]

    A. Levin; M. Olshanetsky; A. Zotov

    2006-06-01

    We show that the Painlev{\\'e} VI equation has an equivalent form of the non-autonomous Zhukovsky-Volterra gyrostat. This system is a generalization of the Euler top in $C^3$ and include the additional constant gyrostat momentum. The quantization of its autonomous version is achieved by the reflection equation. The corresponding quadratic algebra generalizes the Sklyanin algebra. As by product we define integrable XYZ spin chain on a finite lattice with new boundary conditions.

  19. Rare top quark decays in extended models

    SciTech Connect (OSTI)

    Gaitan, R.; Miranda, O. G.; Cabral-Rosetti, L. G.

    2006-09-25

    Flavor changing neutral currents (FCNC) decays t {yields} H0 + c, t {yields} Z + c, and H0 {yields} t + c-bar are discussed in the context of Alternative Left-Right symmetric Models (ALRM) with extra isosinglet heavy fermions where FCNC decays may take place at tree-level and are only suppressed by the mixing between ordinary top and charm quarks, which is poorly constraint by current experimental values. The non-manifest case is also briefly discussed.

  20. Light Front Quantization with the Light Cone Gauge

    E-Print Network [OSTI]

    D. G. C. McKeon; Chenguang Zhao

    2015-10-07

    The Dirac procedure for dealing with constraints is applied to the quantization of gauge theories on the light front. The light cone gauge is used in conjunction with the first class constraints that arise and the resulting Dirac brackets are found. These gauge conditions are not used to eliminate degrees of freedom from the action prior to applying the Dirac constraint procedure. This approach is illustrated by considering Yang-Mills theory and the superparticle in a 2 + 1 dimensional target space.

  1. Review of recent top-quark LHC combinations

    E-Print Network [OSTI]

    Giorgio Cortiana; on behalf of the ATLAS; CMS collaborations within the TOPLHCWG

    2014-11-27

    A review of recent combinations of top-quark measurements performed at the LHC, by the ATLAS and CMS collaborations, is provided. The typical uncertainty categorisations, and their assumed correlation patterns are presented, together with the results of the combinations of the top-quark pair and single top-quark production cross sections, the top-quark mass, as well as of the $W$ boson polarisation and the charge asymmetry in $t\\bar t$ events.

  2. China Has Become a Top Global Warship Builder

    E-Print Network [OSTI]

    COLLINS, Gabe

    2013-01-01

    China builds its nuclear submarines) is a top candidate dueneeded to build nuclear submarines capable of surviv- ing in

  3. Announcing the "Top 10" List of Green Utility Leaders

    Office of Energy Efficiency and Renewable Energy (EERE)

    Find out if your utility made the National Renewable Energy Laboratory's list of top green power programs.

  4. TOP500 Sublist for November 2001

    SciTech Connect (OSTI)

    Strohmaier, Erich; Meuer, Hans W.; Dongarra, Jack J.; Simon,Horst D.

    2001-11-09

    18th Edition of TOP500 List of World's Fastest Supercomputers Released MANNHEIM, GERMANY; KNOXVILLE, TENN.; BERKELEY, CALIF. In what has become a much-anticipated event in the world of high-performance computing, the 18th edition of the TOP500 list of the world's fastest supercomputers was released today (November 9, 2001). The latest edition of the twice-yearly ranking finds IBM as the leader in the field, with 32 percent in terms of installed systems and 37 percent in terms of total performance of all the installed systems. In a surprise move Hewlett-Packard captured the second place with 30 percent of the systems. Most of these systems are smaller in size and as a consequence HP's share of installed performance is smaller with 15 percent. This is still enough for second place in this category. SGI, Cray and Sun follow in the number of TOP500 systems with 41 (8 percent), 39 (8 percent), and 31 (6 percent) respectively. In the category of installed performance Cray Inc. keeps the third position with 11 percent ahead of SGI (8 percent) and Compaq (8 percent).

  5. Top quark physics at the Tevatron

    SciTech Connect (OSTI)

    Antonio Sidoti

    2004-03-17

    After the successful Run I of the Tevatron (1992-1996),with the top quark discovery, both CDF and D0 experiments were extensively upgraded to meet the challenges of the Tevatron Run II collider. The energy of p{bar p} collisions at the Tevatron was increased from {radical}s = 1.8 TeV to {radical}s = 1.96 TeV. t{bar t} production cross section is expected to increase by a factor of {approx} 30%. Major upgrades in the Tevatron accelerator chain will increase the Run II instantaneous luminosity: the goal is to achieve L = 5 - 20 x 10{sup 31} cm{sup 2}s{sup -1} while the highest luminosity reached up to now (September 2003) is 5.2 x 10{sup 31} cm{sup 2} s{sup -1}. In this paper we will present the top quark properties measured by both CDF and D0 with the first physics-quality data collected during the Run II (March 2002-January 2003). First we will review t{bar t} cross section measurements in the various decay channels; then top quark mass measurements will be presented.

  6. A turnstile mechanism for fronts propagating in fluid flows

    E-Print Network [OSTI]

    John R. Mahoney; Kevin A. Mitchell

    2013-05-22

    We consider the propagation of fronts in a periodically driven flowing medium. It is shown that the progress of fronts in these systems may be mediated by a turnstile mechanism akin to that found in chaotic advection. We first define the modified ("active") turnstile lobes according to the evolution of point sources across a transport boundary. We then show that the lobe boundaries may be constructed from stable and unstable \\emph{burning invariant manifolds}---one-way barriers to front propagation analogous to traditional invariant manifolds for passive advection. Because the burning invariant manifolds (BIMs) are one-dimensional curves in a three-dimensional ($xy\\theta$) phase space, their projection into $xy$-space exhibits several key differences from their advective counterparts: (lobe) areas are not preserved, BIMs may self-intersect, and an intersection between stable and unstable BIMs does not map to another such intersection. These differences must be accommodated in the correct construction of the new turnstile. As an application, we consider a lobe-based treatment protocol for protecting an ocean bay from an invading algae bloom.

  7. Noise Load Management at Amsterdam Airport Schiphol

    E-Print Network [OSTI]

    Boucherie, Richard J.

    Noise Load Management at Amsterdam Airport Schiphol T.R. Meerburg , R.J. Boucherie , M.J.A.L. van objective is to guarantee safety, efficiency, and protection of the environment, that includes noise load contributes to the noise load at these points. If the cumulative load in an aviation year at an enforce- ment

  8. A MEASUREMENT OF THE TOP QUARK'S CHARGE Zeynep Gunay Unalan

    E-Print Network [OSTI]

    Quigg, Chris

    advisor Kirsten Tollefson for her guidance, explaining to me the detector and trigger system and truly to confirm if the observed top quark is really the top quark posited in the Standard Model (SM) is to measure its electric charge. In the Standard Model the top quark is the isospin partner of the bottom quark

  9. TOP-K Correlation Computation Hui Xiong, Wenjun Zhou

    E-Print Network [OSTI]

    Xiong, Hui

    TOP-K Correlation Computation Hui Xiong, Wenjun Zhou Management Science and Information Systems, in this paper, we propose an alternative task: finding the top-k strongly correlated pairs. Conse- quently, we algorithm, called TOP-COP to exploit this property to effectively prune many pairs even without computing

  10. Top-down facilitation of visual recognition , K. S. Kassam*

    E-Print Network [OSTI]

    Schacter, Daniel

    Top-down facilitation of visual recognition M. Bar* , K. S. Kassam*§ , A. S. Ghuman*§¶ , J. Boshyan gradually promote the role of top-down processing in recognition, but how such facilitation is triggered object recognition by initiating top-down processes projected from orbitofrontal to visual cortex

  11. Top-kkk Preferences in High Dimensions Duke University

    E-Print Network [OSTI]

    Agarwal, Pankaj K.

    Top-kkk Preferences in High Dimensions Albert Yu Duke University syu@cs.duke.edu Pankaj K. Agarwal applications, users are interested only in a small num- ber (say, k) of "top" objects from a large set on preference top-k queries [9, 12, 13, 23, 38]. Motivated by applications in business analysis, Vlachou et al

  12. On Top-k Recommendation using Social Networks Xiwang Yang

    E-Print Network [OSTI]

    Liu, Yong

    On Top-k Recommendation using Social Networks Xiwang Yang , Harald Steck ,Yang Guo and Yong Liu). Social network based top-k recommendation, which recom- mends to a user a small number of items at a time, is not well studied. In this paper, we conduct a comprehensive study on improving the accuracy of top

  13. Certified Computer Algebra on top of an Interactive Theorem Prover

    E-Print Network [OSTI]

    Wiedijk, Freek

    Certified Computer Algebra on top of an Interactive Theorem Prover Cezary Kaliszyk and Freek, the Netherlands Abstract. We present a prototype of a computer algebra system that is built on top of a proof performed by the computer algebra system. Although our system is built on top of a proof assistant, we

  14. Certified Computer Algebra on top of an Interactive Theorem Prover

    E-Print Network [OSTI]

    Wiedijk, Freek

    Certified Computer Algebra on top of an Interactive Theorem Prover Abstract. We present a prototype of a computer algebra system that is built on top of a proof a computer algebra system on top of a proof assistant. For our prototype we chose the LCF-style theorem

  15. Searches for New Physics in Top Decays at D0

    SciTech Connect (OSTI)

    Pleier, Marc-Andre; /Brookhaven

    2011-08-01

    The Tevatron proton-antiproton collider at Fermilab with its centre of mass energy of 1.96 TeV allows for pair production of top quarks and the study of top quark decay properties. This report reflects the current status of measurements of the W boson helicity in top quark decays and the ratio of top quark branching fractions as well as searches for neutral current top quark decays and pair production of fourth generation t' quarks, performed by the D0 Collaboration utilising datasets of up to 5.4 fb{sup -1}.

  16. Load Forecasting of Supermarket Refrigeration

    E-Print Network [OSTI]

    @compute.dtu.dk www.compute.dtu.dk M.Sc.-2013-87 #12;Summary (English) The Danish power production coming from energy system. Observed refrigeration load and local ambient temperature from a Danish su- permarket renewable energy, is increasing, therefore a flexible energy system is needed. In the present Thesis

  17. Scaling the Web Load Testing

    E-Print Network [OSTI]

    Menascé, Daniel A.

    Scaling the Web Load Testing of Web Sites D evelopers typically measure a Web appli- cation on a Web site's IT infrastructure are a function of the site's expect- ed traffic. Ideally, you want, you shouldn't upgrade your Web servers if customers experience most delays in the database server

  18. Collider Detector at Fermilab (CDF): Data from the Top Group's Top Quark Research

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

    The Collider Detector at Fermilab (CDF) is a Tevatron experiment at Fermilab. The Tevatron, a powerful particle accelerator, accelerates protons and antiprotons close to the speed of light, and then makes them collide head-on inside the CDF detector. The CDF detector is used to study the products of such collisions. The CDF Physics Group at Fermilab is organized into six working groups, each with a specific focus. The Top group studies the properties of the top quark, the heaviest known fundamental particle. Their public web page makes data and numerous figures available from both CDF Runs I and II.

  19. Resonance Searches with an Updated Top Tagger

    E-Print Network [OSTI]

    Gregor Kasieczka; Tilman Plehn; Torben Schell; Thomas Strebler; Gavin P. Salam

    2015-03-19

    The performance of top taggers, for example in resonance searches, can be significantly enhanced through an increased set of variables, with a special focus on final-state radiation. We study the production and the decay of a heavy gauge boson in the upcoming LHC run. For constant signal efficiency, the multivariate analysis achieves an increased background rejection by up to a factor 30 compared to our previous tagger. Based on this study and the documentation in the Appendix we release a new HEPTopTagger2 for the upcoming LHC run. It now includes an optimal choice of the size of the fat jet, N-subjettiness, and different modes of Qjets.

  20. Search for top and bottom squarks

    SciTech Connect (OSTI)

    C. Rott

    2003-10-15

    Searches for the lightest scalar top quark {bar t}{sub 1} and scalar bottom quark {bar b}{sub 1} performed at LEP2 with a center-of-mass energy of up to {radical}s = 209 GeV and at Tevatron using data collected at {radical}s = 1.8 TeV during Run I and at {radical}s = 1.96 TeV during Run II, are discussed. Different possible decay modes were considered and no evidence for any such signal was observed. Exclusion limits were extracted.

  1. WIPP Receives Top Mine Safety Award

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAboutXuRod Hunt (208) 386-52542 12 BONNEVILLE POWERStillTop Mine

  2. Top 10 science stories of the year

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired Solar FuelTechnologyTel:FebruaryEIA's Today InTools AboutDepartmentTop

  3. Top 10 - DOE Directives, Delegations, and Requirements

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDidDevelopment TopMetathesisSedimentsTechnologies | BlandineTools

  4. GreenTops | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA Jump to:ofEniaElectricHydro ElectricGreen St.GreenTops Jump to:

  5. Top Crop Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EISTJThin Film Solar TechnologiesCFR 1201EnergyInformation ToolsTop

  6. Building America Top Innovations | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann JacksonDepartment|Marketing, LLC |EnergycurrentlyJuneEnergy This| Department ofTop

  7. Diesel prices top $4 per gallon

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas UsageDiesel pricesDiesel prices top $4 per

  8. Phase-Front Solutions and Instabilities in Forced Oscillations Christian Elphick,1 Aric Hagberg,2 and Ehud Meron3

    E-Print Network [OSTI]

    Hagberg, Aric

    ], the ferrocyanide-iodate-sulfite reaction [15, 16], and catalytic surface reactions [17]. Stationary -fronts exist

  9. Energy Loss at Propagating Jamming Fronts in Granular Gas Clusters

    E-Print Network [OSTI]

    Justin C. Burton; Peter Y. Lu; Sidney R. Nagel

    2013-10-15

    We explore the initial moments of impact between two dense granular clusters in a two-dimensional geometry. The particles are composed of solid CO$_{2}$ and are levitated on a hot surface. Upon collision, the propagation of a dynamic "jamming front" produces a distinct regime for energy dissipation in a granular gas in which the translational kinetic energy decreases by over 90%. Experiments and associated simulations show that the initial loss of kinetic energy obeys a power law in time, $\\Delta E=-Kt^{3/2}$, a form that can be predicted from kinetic arguments.

  10. APPLICATION OF OBJECT ORIENTED PROGRAMMING TECHNIQUES IN FRONT END COMPUTERS.

    SciTech Connect (OSTI)

    SKELLY,J.F.

    1997-11-03

    The Front End Computer (FEC) environment imposes special demands on software, beyond real time performance and robustness. FEC software must manage a diverse inventory of devices with individualistic timing requirements and hardware interfaces. It must implement network services which export device access to the control system at large, interpreting a uniform network communications protocol into the specific control requirements of the individual devices. Object oriented languages provide programming techniques which neatly address these challenges, and also offer benefits in terms of maintainability and flexibility. Applications are discussed which exhibit the use of inheritance, multiple inheritance and inheritance trees, and polymorphism to address the needs of FEC software.

  11. Front-end utility rate updates | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA Jump to:ofEnia SpAFlex FuelsEnergyInc| Open EnergyFront-end utility

  12. Top Partners and Higgs Boson Production

    E-Print Network [OSTI]

    Chien-Yi Chen; S. Dawson; I. M. Lewis

    2014-11-04

    The Higgs boson is produced at the LHC through gluon fusion at roughly the Standard Model rate. New colored fermions, which can contribute to $gg\\rightarrow h$, must have vector-like interactions in order not to be in conflict with the experimentally measured rate. We examine the size of the corrections to single and double Higgs production from heavy vector-like fermions in $SU(2)_L$ singlets and doublets and search for regions of parameter space where double Higgs production is enhanced relative to the Standard Model prediction. We compare production rates and distributions for double Higgs production from gluon fusion using an exact calculation, the low energy theorem (LET), where the top quark and the heavy vector-like fermions are taken to be infinitely massive, and an effective theory (EFT) where top mass effects are included exactly and the effects of the heavy fermions are included to ${\\cal O}(1/M^2_X)$. Unlike the LET, the EFT gives an extremely accurate description of the kinematic distributions for double Higgs production.

  13. Spinning Reserve From Responsive Loads

    SciTech Connect (OSTI)

    Kirby, B.J.

    2003-04-08

    Responsive load is the most underutilized reliability resource available to the power system today. It is currently not used at all to provide spinning reserve. Historically there were good reasons for this, but recent technological advances in communications and controls have provided new capabilities and eliminated many of the old obstacles. North American Electric Reliability Council (NERC), Federal Energy Regulatory Commission (FERC), Northeast Power Coordinating Council (NPCC), New York State Reliability Council (NYSRC), and New York Independent System Operator (NYISO) rules are beginning to recognize these changes and are starting to encourage responsive load provision of reliability services. The Carrier ComfortChoice responsive thermostats provide an example of these technological advances. This is a technology aimed at reducing summer peak demand through central control of residential and small commercial air-conditioning loads. It is being utilized by Long Island Power Authority (LIPA), Consolidated Edison (ConEd), Southern California Edison (SCE), and San Diego Gas and Electric (SDG&E). The technology is capable of delivering even greater response in the faster spinning reserve time frame (while still providing peak reduction). Analysis of demand reduction testing results from LIPA during the summer of 2002 provides evidence to back up this claim. It also demonstrates that loads are different from generators and that the conventional wisdom, which advocates for starting with large loads as better ancillary service providers, is flawed. The tempting approach of incrementally adapting ancillary service requirements, which were established when generators were the only available resources, will not work. While it is easier for most generators to provide replacement power and non-spinning reserve (the slower response services) than it is to supply spinning reserve (the fastest service), the opposite is true for many loads. Also, there is more financial reward for supplying spinning reserve than for supplying the other reserve services as a result of the higher spinning reserve prices. The LIPAedge program (LIPA's demand reduction program using Carrier ComfortChoice thermostats) provides an opportunity to test the use of responsive load for spinning reserve. With potentially 75 MW of spinning reserve capability already installed, this test program can also make an important contribution to the capacity needs of Long Island during the summer of 2003. Testing could also be done at ConEd ({approx}30 MW), SCE ({approx}15 MW), and/or SDG&E ({approx}15 MW). This paper is divided into six chapters. Chapter 2 discusses the contingency reserve ancillary services, their functions in supporting power system reliability, and their technical requirements. It also discusses the policy and tariff requirements and attempts to distinguish between ones that are genuinely necessary and ones that are artifacts of the technologies that were historically used to provide the services. Chapter 3 discusses how responsive load could provide contingency reserves (especially spinning reserve) for the power system. Chapter 4 specifically discusses the Carrier ComfortChoice responsive thermostat technology, the LIPAedge experience with that technology, and how the technology could be used to supply spinning reserve. Chapter 5 discusses a number of unresolved issues and suggests areas for further research. Chapter 6 offers conclusions and recommendations.

  14. PASSIVE DETECTION OF VEHICLE LOADING

    SciTech Connect (OSTI)

    Garrett, A.

    2012-01-03

    The Digital Imaging and Remote Sensing Laboratory (DIRS) at the Rochester Institute of Technology, along with the Savannah River National Laboratory is investigating passive methods to quantify vehicle loading. The research described in this paper investigates multiple vehicle indicators including brake temperature, tire temperature, engine temperature, acceleration and deceleration rates, engine acoustics, suspension response, tire deformation and vibrational response. Our investigation into these variables includes building and implementing a sensing system for data collection as well as multiple full-scale vehicle tests. The sensing system includes; infrared video cameras, triaxial accelerometers, microphones, video cameras and thermocouples. The full scale testing includes both a medium size dump truck and a tractor-trailer truck on closed courses with loads spanning the full range of the vehicle's capacity. Statistical analysis of the collected data is used to determine the effectiveness of each of the indicators for characterizing the weight of a vehicle. The final sensing system will monitor multiple load indicators and combine the results to achieve a more accurate measurement than any of the indicators could provide alone.

  15. Economizer recirculation for low-load stability in heat recovery steam generator

    SciTech Connect (OSTI)

    Cuscino, R.T.; Shade, R.L. Jr.

    1986-04-15

    An economizer system is described for heating feedwater in a heat recovery steam generator which consists of: at least first and second economizer tube planes; each of the economizer tube planes including a plurality of generally parallel tubes; the tubes being generally vertically disposed; each of the economizer tube planes including a top header and a bottom header; all of the plurality of tubes in each economizer tube plane being connected in parallel to their top and bottom headers whereby parallel feedwater flow through the plurality of tubes between the top and bottom headers is enabled; one of the top and bottom headers being an inlet header; a second of the top and bottom headers being an outlet header; a boiler feed pump; the boiler feed pump being effective for applying a flow of feedwater to the inlet header; means for serially interconnecting the economizer tube planes; the means for serially interconnecting including means for flowing the feedwater upward and downward in tubes of alternating ones of the economizer tube planes between the inlet header and the outlet header; means for conveying heated feedwater from the outlet header to a using process; means for recirculating at least a portion of the heated feedwater from the outlet header to an inlet of the boiler feed pump; and the means for recirculating including means for relating the portion to a steam load in the using process whereby an increased flow is produced through all of the economizer tube planes at values of the steam load below a predetermined value and a condition permitting initiation of reverse flow in any of the tubes is substantially reduced.

  16. Load Forecast For use in Resource Adequacy

    E-Print Network [OSTI]

    forecast of 4) Calculate Hourly Load Allocation Factor s for each day for 2019 For use in RA analysis as a function ofthe load for electricity in the region as a function of cyclical, weather and economic variables

  17. Residential Load Management Program and Pilot 

    E-Print Network [OSTI]

    Haverlah, D.; Riordon, K.

    1994-01-01

    In 1986 LCRA embarked on residential load management to control peak summer loads. At that time, LCRA was considered a summer peaking utility, and residential air conditioning and water heating systems were selected for control. The program...

  18. System and method employing a minimum distance and a load feature database to identify electric load types of different electric loads

    DOE Patents [OSTI]

    Lu, Bin; Yang, Yi; Sharma, Santosh K; Zambare, Prachi; Madane, Mayura A

    2014-12-23

    A method identifies electric load types of a plurality of different electric loads. The method includes providing a load feature database of a plurality of different electric load types, each of the different electric load types including a first load feature vector having at least four different load features; sensing a voltage signal and a current signal for each of the different electric loads; determining a second load feature vector comprising at least four different load features from the sensed voltage signal and the sensed current signal for a corresponding one of the different electric loads; and identifying by a processor one of the different electric load types by determining a minimum distance of the second load feature vector to the first load feature vector of the different electric load types of the load feature database.

  19. Top-quark mass measurements: Alternative techniques (LHC + Tevatron)

    E-Print Network [OSTI]

    Stefanie Adomeit

    2014-11-28

    Measurements of the top-quark mass employing alternative techniques are presented, performed by the D0 and CDF collaborations at the Tevatron as well as the ATLAS and CMS experiments at the LHC. The alternative methods presented include measurements using the lifetime of $B$-hadrons, the transverse momentum of charged leptons and the endpoints of kinematic distributions in top quark anti-quark pair ($t\\bar{t}$) final states. The extraction of the top-quark pole mass from the $t\\bar{t}$ production cross-section and the normalized differential $t\\bar{t}$ + 1-jet cross-section are discussed as well as the top-quark mass extraction using fixed-order QCD predictions at detector level. Finally, a measurement of the top-quark mass using events enhanced in single top t-channel production is presented.

  20. Wind induced torsional loads on structures

    E-Print Network [OSTI]

    Kareem, Ahsan

    -level crosswind loading on a square cross-section building. Reinhold et al.4 instrumented a building model

  1. Plug Load Behavioral Change Demonstration Project

    SciTech Connect (OSTI)

    Metzger, I.; Kandt, A.; VanGeet, O.

    2011-08-01

    This report documents the methods and results of a plug load study of the Environmental Protection Agency's Region 8 Headquarters in Denver, Colorado, conducted by the National Renewable Energy Laboratory. The study quantified the effect of mechanical and behavioral change approaches on plug load energy reduction and identified effective ways to reduce plug load energy. Load reduction approaches included automated energy management systems and behavioral change strategies.

  2. Top quark mass measurements at the D0 experiment

    E-Print Network [OSTI]

    Alexander Grohsjean

    2009-05-30

    The most recent measurements of the top quark mass at the D0 experiment are summarized. Different techniques and final states are used and the top quark mass is determined to be mtop=172.8+-1.6(stat+syst)GeV/c^2. In addition, a new, indirect measurement comparing the measured cross section to theoretical calculations is discussed. Both, the direct and the indirect measurement of the top quark mass are in good agreement.

  3. Measurements of Electroweak Top Production at the LHC

    E-Print Network [OSTI]

    Aniello Spiezia for the ATLAS; CMS Collaborations

    2012-12-03

    The production of a single top quark at LHC may occur through charged-current electroweak interactions, i.e. via three different processes: the s-channel exchange of a virtual W boson, the t-channel exchange of a virtual W boson and the associated production of a top quark and a W boson (tW). In this paper a review of the measurements of the single-top production made both at ATLAS and CMS will be shown.

  4. Modeling and Forecasting Electric Daily Peak Loads

    E-Print Network [OSTI]

    Abdel-Aal, Radwan E.

    for the same data. Two methods are described for forecasting daily peak loads up to one week ahead through, including generator unit commitment, hydro-thermal coordination, short-term maintenance, fuel allocation forecasting accuracies. STLF forecasting covers the daily peak load, total daily energy, and daily load curve

  5. Instantaneous Offloading of Transient Web Server Load

    E-Print Network [OSTI]

    Instantaneous Offloading of Transient Web Server Load Vsevolod V. Panteleenko and Vincent W. Freeh A modern web-hosting site is designed to handle load that is sometimes an order of magnitude greater than and performance study of the web booster architecture, which reduces web server load during peak periods. A web

  6. Nuclear Physics on the Light Front - a new old way to do an old new problem

    E-Print Network [OSTI]

    Gerald A. Miller

    1999-08-10

    A brief introduction to light front techniques is presented. This is followed by a review of recent attempts to perform realistic, relativistic nuclear physics with those techniques.

  7. Higher-order differencing for phase-front propagation in geothermal systems

    E-Print Network [OSTI]

    Oldenburg, Curtis; Pruess, Karsten

    1998-01-01

    FRONT PROPAGATION IN GEOTHERMAL SYSTEMS Curtis M. Oldenburgreinjection in geothermal systems. The numerical simulationcases that can arise in geothermal systems where saturation

  8. Women of Color and Minorities on the Home front during World War II

    E-Print Network [OSTI]

    Sanders-Pinto, Camille

    2015-01-01

    and Minorities on the Home front during World War II ByCamille Sanders-Pinto During World War II minority women

  9. Time series analysis of Adaptive Optics wave-front sensor telemetry...

    Office of Scientific and Technical Information (OSTI)

    for each subaperture are available. The primary problem is performance comparison of alternative wave-front sensing algorithms. Using direct comparison of data in open loop and...

  10. Jet Dipolarity: Top Tagging with Color Flow

    SciTech Connect (OSTI)

    Hook, Anson; Jankowiak, Martin; /SLAC /Stanford U., Phys. Dept.; Wacker, Jay G.; /SLAC

    2011-08-12

    A new jet observable, dipolarity, is introduced that can distinguish whether a pair of subjets arises from a color singlet source. This observable is incorporated into the HEPTopTagger and is shown to improve discrimination between top jets and QCD jets for moderate to high p{sub T}. The impressive resolution of the ATLAS and CMS detectors means that a typical QCD jet at the LHC deposits energy in {Omicron}(10-100) calorimeter cells. Such fine-grained calorimetry allows for jets to be studied in much greater detail than previously, with sophisticated versions of current techniques making it possible to measure more than just the bulk properties of jets (e.g. event jet multiplicities or jet masses). One goal of the LHC is to employ these techniques to extend the amount of information available from each jet, allowing for a broader probe of the properties of QCD. The past several years have seen significant progress in developing such jet substructure techniques. A number of general purpose tools have been developed, including: (i) top-tagging algorithms designed for use at both lower and higher p{sub T} as well as (ii) jet grooming techniques such as filtering, pruning, and trimming, which are designed to improve jet mass resolution. Jet substructure techniques have also been studied in the context of specific particle searches, where they have been shown to substantially extend the reach of traditional search techniques in a wide variety of scenarios, including for example boosted Higgses, neutral spin-one resonances, searches for supersymmetry, and many others. Despite these many successes, however, there is every reason to expect that there remains room for refinement of jet substructure techniques.

  11. Vision Machine & Fabrication Corp. Named Top Small Business Subcontrac...

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

    Vision Machine & Fabrication Corp. Named Top Small Business Subcontractor at Jefferson Lab for FY 2014 NEWPORT NEWS, VA, Sept. 10, 2015 - Jefferson Science Associates, the...

  12. TOP AND HIGGS PHYSICS AT THE HADRON COLLIDERS

    SciTech Connect (OSTI)

    Jabeen, Shabnam

    2013-10-20

    This review summarizes the recent results for top quark and Higgs boson measurements from experiments at Tevatron, a proton–antiproton collider at a center-of-mass energy of ? s =1 . 96 TeV, and the Large Hadron Collider, a proton–proton collider at a center- of-mass energy of ? s = 7 TeV. These results include the discovery of a Higgs-like boson and measurement of its various properties, and measurements in the top quark sector, e.g. top quark mass, spin, charge asymmetry and production of single top quark.

  13. Top 10 Vulnerabilities of Control Systems and Their Associated...

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

    and Theif Associated Mitigations (2006) More Documents & Publications Introduction SCADA Security for Managers and Operators TOP 10 VULNERABILITIES OF CONTROL SYSTEMS AND...

  14. Secretary Chu Announces Second Round of "America's Next Top Energy...

    Energy Savers [EERE]

    Secretary Chu Announces Second Round of "America's Next Top Energy Innovator" on One Year Anniversary of the White House Startup America Initiative Secretary Chu Announces Second...

  15. Jefferson Lab Recognizes Top Small Business Subcontractor for...

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

    Recognizes Top Small Business Subcontractor for 2008 groundbreaking D.G.S. President Ruth Seeley and her husband, Don, vice president and project manager, received the 2008...

  16. Building America Top Innovations Hall of Fame Profile ? Integration...

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

    are essential to realizing the promise of high-performance homes. BUILDING AMERICA TOP INNOVATIONS HALL OF FAME PROFILE INNOVATIONS CATEGORY: 1. Advanced Technologies and...

  17. Northwest public utilities, BPA top five-year energy savings...

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

    Northwest-public-utilities-BPA-top-five-year-energy-savings-target Sign In About | Careers | Contact | Investors | bpa.gov Search News & Us Expand News & Us Projects &...

  18. NREL: News - NREL Staff Recognized for Top Innovations as Lab...

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

    Release NR-2015 NREL Staff Recognized for Top Innovations as Lab Celebrates Record Patent Year DOE EERE Assistant Secretary David Danielson highlights "innovation culture" of...

  19. Valuing Green in the Appraisal Process - Building America Top...

    Energy Savers [EERE]

    America Top Innovation Real estate appraisers have historically faced challenges with green and energy efficient homes, both in identifying comparables and in supporting...

  20. Building America Solution Center - Building America Top Innovation...

    Energy Savers [EERE]

    America Top Innovation SCimagemale.jpg The Building America Solution Center is a Web-based tool connecting users to fast, free, and expert building science and energy...

  1. Building America Top Innovations 2014 Profile: HVAC Cabinet Air...

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

    Building Science Solutions Optimized Comfort Solutions HVAC Cabinet Air Leakage Test Method (top left) Building America teams evaluated several testing methods to identify...

  2. Dynamical electroweak symmetry breaking and the top quark

    SciTech Connect (OSTI)

    Chivukula, R.S. [Boston Univ., MA (United States)

    1997-01-01

    In this talk, I discuss theories of dynamical electroweak symmetry breaking, with emphasis on the implications of a heavy top quark on the weak interaction {rho} parameter.

  3. Secretary Chu Announces Second Round of "America's Next Top Energy...

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

    of "America's Next Top Energy Innovator," a program that allows startup companies to license groundbreaking technologies developed by DOE's 17 national laboratories for 1,000...

  4. NREL's Bobi Garrett Named Top Industry Executive | Awards and...

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

    and partnerships at the Energy Department's National Renewable Energy Laboratory (NREL), was recognized by the Denver Business Journal as one of the region's top female...

  5. Sequoia ranked third in TOP500 list | National Nuclear Security...

    National Nuclear Security Administration (NNSA)

    according to the industry-standard Top500 list. Sequoia, which recently completed its transition to classified computing in support of NNSA's Stockpile Stewardship Program,...

  6. Vehicle Technologies Program: Goals, Strategies, and Top Accomplishmen...

    Office of Environmental Management (EM)

    Program (VTP) vtpgoals-strategies-accomp.pdf More Documents & Publications Advanced Combustion Engine R&D: Goals, Strategies, and Top Accomplishments Materials Technologies:...

  7. Large Higgs energy region in Higgs associated top pair production...

    Office of Scientific and Technical Information (OSTI)

    Large Higgs energy region in Higgs associated top pair production at the Linear Collider Citation Details In-Document Search Title: Large Higgs energy region in Higgs associated...

  8. 1993 Pacific Northwest Loads and Resources Study.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration.

    1993-12-01

    The Loads and Resources Study is presented in three documents: (1) this summary of Federal system and Pacific Northwest region loads and resources; (2) a technical appendix detailing forecasted Pacific Northwest economic trends and loads, and (3) a technical appendix detailing the loads and resources for each major Pacific Northwest generating utility. In this loads and resources study, resource availability is compared with a range of forecasted electricity consumption. The forecasted future electricity demands -- firm loads -- are subtracted from the projected capability of existing and {open_quotes}contracted for{close_quotes} resources to determine whether Bonneville Power Administration (BPA) and the region will be surplus or deficit. If resources are greater than loads in any particular year or month, there is a surplus of energy and/or capacity, which BPA can sell to increase revenues. Conversely, if firm loads exceed available resources, there is a deficit of energy and/or capacity, and additional conservation, contract purchases, or generating resources will be needed to meet load growth. The Pacific Northwest Loads and Resources Study analyzes the Pacific Northwest`s projected loads and available generating resources in two parts: (1) the loads and resources of the Federal system, for which BPA is the marketing agency; and (2) the larger Pacific Northwest regional power system, which includes loads and resource in addition to the Federal system. The loads and resources analysis in this study simulates the operation of the power system under the Pacific Northwest Coordination Agreement (PNCA) produced by the Pacific Northwest Coordinating Group. This study presents the Federal system and regional analyses for five load forecasts: high, medium-high, medium, medium-low, and low. This analysis projects the yearly average energy consumption and resource availability for Operating Years (OY) 1994--95 through 2003--04.

  9. High loading uranium fuel plate

    DOE Patents [OSTI]

    Wiencek, Thomas C. (Bolingbrook, IL); Domagala, Robert F. (Indian Head Park, IL); Thresh, Henry R. (Palos Heights, IL)

    1990-01-01

    Two embodiments of a high uranium fuel plate are disclosed which contain a meat comprising structured uranium compound confined between a pair of diffusion bonded ductile metal cladding plates uniformly covering the meat, the meat having a uniform high fuel loading comprising a content of uranium compound greater than about 45 Vol. % at a porosity not greater than about 10 Vol. %. In a first embodiment, the meat is a plurality of parallel wires of uranium compound. In a second embodiment, the meat is a dispersion compact containing uranium compound. The fuel plates are fabricated by a hot isostatic pressing process.

  10. Automated fuel pin loading system

    DOE Patents [OSTI]

    Christiansen, David W. (Kennewick, WA); Brown, William F. (West Richland, WA); Steffen, Jim M. (Richland, WA)

    1985-01-01

    An automated loading system for nuclear reactor fuel elements utilizes a gravity feed conveyor which permits individual fuel pins to roll along a constrained path perpendicular to their respective lengths. The individual lengths of fuel cladding are directed onto movable transports, where they are aligned coaxially with the axes of associated handling equipment at appropriate production stations. Each fuel pin can be reciprocated axially and/or rotated about its axis as required during handling steps. The fuel pins are inserted as a batch prior to welding of end caps by one of two disclosed welding systems.

  11. INCREMENTAL COOLING LOAD DETERMINATION FOR PASSIVE DIRECT GAIN HEATING SYSTEMS

    E-Print Network [OSTI]

    Sullivan, Paul W.

    2013-01-01

    May 27-30, 1981 INCREMENTAL COOLING LOAD DETERMINATION FOR12048 May 1981 INCREMENTAL COOLING LOAD DETERMINATION FORfor increases in the building cooling load resulting from

  12. Investigation of residential central air conditioning load shapes in NEMS

    E-Print Network [OSTI]

    Hamachi LaCommare, Kristina; Marnay, Chris; Gumerman, Etan; Chan, Peter; Rosenquist, Greg; Osborn, Julie

    2002-01-01

    of Residential Central Air Conditioning Load Shapes in NEMSof Residential Central Air Conditioning Load Shapes in NEMSof Residential Central Air Conditioning Load Shapes in NEMS

  13. Optimal Load Management System for Aircraft Electric Power Distribution

    E-Print Network [OSTI]

    Maasoumy, Mehdi; Nuzzo, Pierluigi; Iandola, Forrest; Kamgarpour, Maryam; Sangiovanni-Vincentelli, Alberto; Tomlin, Claire

    2014-01-01

    Optimal Load Management System for Aircraft Electric Poweris to develop an optimal load management system based on thescheme where a high-level load management system receives as

  14. ELECTRICAL LOAD MANAGEMENT FOR THE CALIFORNIA WATER SYSTEM

    E-Print Network [OSTI]

    Krieg, B.

    2010-01-01

    Development Commission. Load Management in California. Staffon the Challenge of Load Management, Conservation Paper No.for Electric Utility Load Management. New York, New York:

  15. Nonlocal competition and logistic growth: patterns, defects and fronts

    E-Print Network [OSTI]

    Yosef E. Maruvka; Nadav M. Shnerb

    2005-06-22

    Logistic growth of diffusing reactants on spatial domains with long range competition is studied. The bifurcations cascade involved in the transition from the homogenous state to a spatially modulated stable solution is presented, and a distinction is made between a modulated phase, dominated by single or few wavenumbers, and the spiky phase, where localized colonies are separated by depleted region. The characteristic defects in the periodic structure are presented for each phase, together with the invasion dynamics in case of local initiation. It is shown that the basic length scale that controls the bifurcation is the width of the Fisher front, and that the total population grows as this width decreases. A mix of analytic results and extensive numerical simulations yields a comprehensive examination of the possible phases for logistic growth in the presence of nonlocal competition.

  16. Low reflectance radio frequency load

    DOE Patents [OSTI]

    Ives, R. Lawrence; Mizuhara, Yosuke M

    2014-04-01

    A load for traveling microwave energy has an absorptive volume defined by cylindrical body enclosed by a first end cap and a second end cap. The first end cap has an aperture for the passage of an input waveguide with a rotating part that is coupled to a reflective mirror. The inner surfaces of the absorptive volume consist of a resistive material or are coated with a coating which absorbs a fraction of incident RF energy, and the remainder of the RF energy reflects. The angle of the reflector and end caps is selected such that reflected RF energy dissipates an increasing percentage of the remaining RF energy at each reflection, and the reflected RF energy which returns to the rotating mirror is directed to the back surface of the rotating reflector, and is not coupled to the input waveguide. Additionally, the reflector may have a surface which generates a more uniform power distribution function axially and laterally, to increase the power handling capability of the RF load. The input waveguide may be corrugated for HE11 mode input energy.

  17. Building America Top Innovations 2012: Advanced Framing Systems and Packages

    SciTech Connect (OSTI)

    none,

    2013-01-01

    This Building America Top Innovations profile describes Building America research showing advanced 2x6, 24-inch on-center framing, single top plates, open headers, and 2-stud corners reduced board feet of lumber by more than 1,000 feet, cut energy use by 13%, and cut material and labor costs by more than $1,000 on a typical home.

  18. Processing Top N and Bottom N Queries Michael J. Carey

    E-Print Network [OSTI]

    Kemper, Alfons

    DBMS, which does not have built-in support for top N and bottom N queries, will end up wasting work.e., one without integrated support for top N and bottom N queries, would end up wasting work. We then show goal is to evaluate such queries with as little wasted work as possible. That is, if a query asks

  19. Mesa Top Photovoltaic Array SyStem SpecificationS

    E-Print Network [OSTI]

    electricity that array will provide: 7% environmental impact Annual carbon offset: 2.4 million pounds of CO2Mesa Top Photovoltaic Array SyStem SpecificationS System size: 750 kW (DC, estimated) Characteristics: Single axis tracker photovoltaics, ground mounted Annual output: 1,200 MWh Location: Top of South

  20. High-Level Information An Approach for Integrating Front-End and Back-End Compilers

    E-Print Network [OSTI]

    Li, Zhiyuan

    High-Level Information ­ An Approach for Integrating Front-End and Back-End Compilers Sangyeun Cho-end and back-end compilers by passing front-end information to the back-end compiler. Importing this information into an existing back- end leverages the state-of-the-art analysis and transforma- tion

  1. GLOBAL OPTIMIZATION OF THE MUON COLLIDER/NEUTRINO FACTORY FRONT END

    E-Print Network [OSTI]

    McDonald, Kirk

    GLOBAL OPTIMIZATION OF THE MUON COLLIDER/NEUTRINO FACTORY FRONT END HISHAM SAYED BROOKHAVEN MEETING 10 September 2013 #12;GLOBALLY OPTIMIZING MUON TARGET & FRONT END 9/10/13 2 in bunches #12;INTRODUCTION & LAYOUT Ã? High performance Optimization Tools on NERSC Ã? Target: Ã?

  2. Are mesoscale eddies in shelf seas formed by baroclinic instability of tidal fronts?

    E-Print Network [OSTI]

    Williams, Ric

    Are mesoscale eddies in shelf seas formed by baroclinic instability of tidal fronts? G. Badin,1 R; accepted 23 July 2009; published 27 October 2009. [1] The formation of eddies along tidal fronts signals are dampened by air-sea interaction and eroded by wind and tidal mixing. High-resolution CTD

  3. SCIPP-04/03 Characterization the Front-End electronics in order to

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    SCIPP-04/03 Characterization the Front-End electronics in order to Calibrate the PTSM Completed by-End electronics of the PTSM, data was collected on the gain of the system. This was done using known quantities a value known as Time Over Threshold (TOT). The TOT is measured by the PTSM Front-End (FE) electronics

  4. Title of Dissertation: NONLINEAR DYNAMICS OF EXTENDED SYSTEMS: CHAOS FRONTS, RARE INTENSE EVENTS,

    E-Print Network [OSTI]

    Anlage, Steven

    ABSTRACT Title of Dissertation: NONLINEAR DYNAMICS OF EXTENDED SYSTEMS: CHAOS FRONTS, RARE INTENSE Edward Ott Department of Physics We investigate the nonlinear dynamics of three extended systems: chaos considered as nodes and actors as links. #12;NONLINEAR DYNAMICS OF EXTENDED SYSTEMS: CHAOS FRONTS, RARE

  5. Historical Fire Regimes in Ponderosa Pine Forests of the Colorado Front Range, and

    E-Print Network [OSTI]

    Historical Fire Regimes in Ponderosa Pine Forests of the Colorado Front Range, and Recommendations scientific understanding of historical fire regimes in the forested landscapes of Colorado's Front Range and the Colorado-Wyoming border. This article focuses on forests in which ponderosa pine is a dominant or co

  6. The Interruption of Alpine Foehn by a Cold Front. Part I: Observations

    E-Print Network [OSTI]

    Gohm, Alexander

    in Inn and Wipp Valley Temperature slope profile Doppler wind lidar in Wipp Valley #12;6 of 13 Case study study Wipp Valley: AWS network Pot. Temp. and Wind ­ Hovmoeller diagram Strong and warm foehn in the lower Wipp Valley Western Inn-Valley gust front enters Wipp Valley Cold front propagates southward

  7. A Review of Cold Fronts with Prefrontal Troughs and Wind Shifts DAVID M. SCHULTZ

    E-Print Network [OSTI]

    Schultz, David

    A Review of Cold Fronts with Prefrontal Troughs and Wind Shifts DAVID M. SCHULTZ Cooperative with a pressure trough and a distinct wind shift at the surface. Many cold fronts, however, do not conform to this model--time series at a single surface station may possess a pressure trough and wind shift in the warm

  8. A Comprehensive Energy Model and Energy-Quality Evaluation of Wireless Transceiver Front-Ends

    E-Print Network [OSTI]

    Kambhampati, Subbarao

    1 A Comprehensive Energy Model and Energy-Quality Evaluation of Wireless Transceiver Front-Ends Y and a multi-user CDMA based system with respect to RF front end energy consumption and communication quality section of a wireless transceiver consumes more energy than the digital part. For better understanding

  9. APPLICATIONS OF FRONT TRACKING TO THE SIMULATION OF RESIN TRANSFER MOLDING

    E-Print Network [OSTI]

    New York at Stoney Brook, State University of

    APPLICATIONS OF FRONT TRACKING TO THE SIMULATION OF RESIN TRANSFER MOLDING Yu Song 1 2 Department: Computers & Mathematics with applications Abstract Resin Transfer Molding, as a method for the manufacture enhance product quality. Key words. resin transfer molding, composite materials, front tracking

  10. Finding the Salt Front: Page 1 Saltwater fish like flounder move up

    E-Print Network [OSTI]

    Lance, Veronica P.

    upriver, which is 20-50 mg/L. The salt front's location is given in Hudson River Miles (abbreviated HRM). Hudson River Miles start at Manhattan's southern tip. This spot, called the Battery, is HRM 0. Going north, Yonkers is at HRM 18, Poughkeepsie at HRM 75. The salt front moves with the tides, weather

  11. Persistence of zero velocity fronts in reaction diffusion systems Lorenz Kramer

    E-Print Network [OSTI]

    Gottwald, Georg A.

    Persistence of zero velocity fronts in reaction diffusion systems Lorenz Kramer Physikalisches; accepted for publication 15 June 2000 Steady, nonpropagating, fronts in reaction diffusion systems usually velocity may become zero only at isolated values where the Maxwell condition is satisfied, for potential

  12. FRONT SPEEDS IN THE VANISHING DIFFUSION LIMIT FOR REACTION-DIFFUSION-CONVECTION EQUATIONS

    E-Print Network [OSTI]

    Mascia, Corrado

    velocity. This convergence also yields a reaction- independent sufficient condition for the minimalFRONT SPEEDS IN THE VANISHING DIFFUSION LIMIT FOR REACTION-DIFFUSION-CONVECTION EQUATIONS E.C.M. CROOKS AND C. MASCIA Abstract. Travelling fronts for scalar balance laws with monostable reaction

  13. Three universality classes for reaction fronts in disordered flows Severine Atis,1

    E-Print Network [OSTI]

    Wiese, Kay Jörg

    flow, the chemical reaction produces traveling waves with velocity V0 inside the medium. An additionalThree universality classes for reaction fronts in disordered flows S´everine Atis,1 Awadhesh Kumar-sustained reaction fronts in a disordered medium subject to an external flow display self-affine roughening, pinning

  14. Wave Front Interaction Model of Stabilized Propagating Wave Segments Vladimir S. Zykov1

    E-Print Network [OSTI]

    Showalter, Kenneth

    Wave Front Interaction Model of Stabilized Propagating Wave Segments Vladimir S. Zykov1 and Kenneth; published 14 February 2005) A wave front interaction model is developed to describe the relationship between excitability and the size and shape of stabilized wave segments in a broad class of weakly excitable media

  15. Observed low frequency variability of the Brazil Current front Gustavo Jorge Goni,1

    E-Print Network [OSTI]

    of the Brazil Current front. Trends of eddy kinetic energy, sea height anomaly, sea surface temperature and windObserved low frequency variability of the Brazil Current front Gustavo Jorge Goni,1 Francis Bringas; published 29 October 2011. [1] The Brazil Current is a weak western boundary current, the southwest

  16. PHYSICAL REVIEW E 87, 012901 (2013) Pinning-depinning transition of fronts between standing waves

    E-Print Network [OSTI]

    Gavilan, Marcel G. Clerc

    2013-01-01

    PHYSICAL REVIEW E 87, 012901 (2013) Pinning-depinning transition of fronts between standing waves behaviors of fronts connecting standing waves, such as the locking phenomenon, pinning-depinning transitions between standing waves. In the driven pendulum chain, using a Galerkin expansion we characterize

  17. MESOSCALE ANALYSIS OF A CAROLINA COASTAL FRONT SETHU RAMAN, NEERAJA C. REDDY and DEVDUTTA S. NIYOGI

    E-Print Network [OSTI]

    Niyogi, Dev

    MESOSCALE ANALYSIS OF A CAROLINA COASTAL FRONT SETHU RAMAN, NEERAJA C. REDDY and DEVDUTTA S. NIYOGI the shore. Key words: GALE, Coastal front, Atmospheric boundary layer, Gulf Stream, Mesoscale analysis turbulent heat fluxes. These strong gradients in heat fluxes enhance mesoscale circulation

  18. Coarsening of precipitation patterns in a moving reaction-diffusion front A. Volford,1

    E-Print Network [OSTI]

    Rácz, Zoltán

    Coarsening of precipitation patterns in a moving reaction-diffusion front A. Volford,1 I. Lagzi,2 November 2009 Precipitation patterns emerging in a two-dimensional moving front are investigated on the example of NaOH diffusing into a gel containing AlCl3. The time evolution of the precipitate Al OH 3 can

  19. PHYSICAL REVIEW E 88, 022141 (2013) Helices in the wake of precipitation fronts

    E-Print Network [OSTI]

    Rácz, Zoltán

    2013-01-01

    PHYSICAL REVIEW E 88, 022141 (2013) Helices in the wake of precipitation fronts Shibi Thomas,1 of the emergence of helices in the wake of precipitation fronts is presented. The precipitation dynamics studies [7,8] in which helical precipitation patterns were observed in the wake of moving reaction

  20. Preliminary Evaluation of Load Management for Electricity End Users 

    E-Print Network [OSTI]

    Collier, S. E.

    1984-01-01

    The planning, design and implementation of load management is complex and expensive. The results of a load management program are subject to numerous uncertainties related to load characteristics, power cost savings, load management costs...

  1. Top Polarization in Stop Production at the LHC

    E-Print Network [OSTI]

    G. Belanger; R. M. Godbole; L. Hartgring; I. Niessen

    2012-12-14

    We survey the expected polarization of the top produced in the decay of a scalar top quark, $\\tilde t \\rightarrow {\\tilde t}\\chi_i^0, i =1-2$. The phenomenology is quite interesting, since the expected polarization depends both on the mixing in the stop and neutralino sectors and on the mass differences between the stop and the neutralino. We find that a mixed stop behaves almost like a right-handed stop due to the larger hypercharge that enters the stop/top/gaugino coupling and that these polarisation effects disappear, when $m_{\\tilde t_1} \\approx m_t+m_{\\tilde\\chi^0_i}$. After a discussion on the expected top polarization from the decay of a scalar top quark, we focus on the interplay of polarization and kinematics at the LHC. We discuss different probes of the top polarization in terms of lab-frame observables. We find that these observables faithfully reflect the polarization of the parent top-quark, but also have a non-trivial dependence on the kinematics of the stop production and decay process. In addition, we illustrate the effect of top polarization on the energy and transverse momentum of the decay lepton in the laboratory frame. Our results show that both spectra are softened substantially in case of a negatively polarized top, particularly for a large mass difference between the stop and the neutralino. Thus, the search strategies, and the conclusions that can be drawn from them, depends not just on the mass difference $m_{\\tilde t} - m_{\\tilde\\chi_{i}^{0}}$ due to the usual kinematic effects but also on the effects of top polarization on the decay kinematics the extent of which depends in turn on the said mass difference.

  2. Tracking down hyper-boosted top quarks

    E-Print Network [OSTI]

    Larkoski, Andrew J; Selvaggi, Michele

    2015-01-01

    The identification of hadronically decaying heavy states, such as vector bosons, the Higgs, or the top quark, produced with large transverse boosts has been and will continue to be a central focus of the jet physics program at the Large Hadron Collider (LHC). At a future hadron collider working at an order-of-magnitude larger energy than the LHC, these heavy states would be easily produced with transverse boosts of several TeV. At these energies, their decay products will be separated by angular scales comparable to individual calorimeter cells, making the current jet substructure identification techniques for hadronic decay modes not directly employable. In addition, at the high energy and luminosity projected at a future hadron collider, there will be numerous sources for contamination including initial- and final-state radiation, underlying event, or pile-up which must be mitigated. We propose a simple strategy to tag such "hyper-boosted" objects that defines jets with radii that scale inversely proportion...

  3. Effect of Initial Disturbance on The Detonation Front Structure of a Narrow Duct

    E-Print Network [OSTI]

    Dou, Hua-Shu

    2010-01-01

    The effect of an initial disturbance on the detonation front structure in a narrow duct is studied by three-dimensional numerical simulation. The numerical method used includes a high resolution fifth-order weighted essentially non-oscillatory scheme for spatial discretization, coupled with a third order total variation diminishing Runge-Kutta time stepping method. Two types of disturbances are used for the initial perturbation. One is a random disturbance which is imposed on the whole area of the detonation front, and the other is a symmetrical disturbance imposed within a band along the diagonal direction on the front. The results show that the two types of disturbances lead to different processes. For the random disturbance, the detonation front evolves into a stable spinning detonation. For the symmetrical diagonal disturbance, the detonation front displays a diagonal pattern at an early stage, but this pattern is unstable. It breaks down after a short while and it finally evolves into a spinning detonati...

  4. Load research manual. Volume 2. Fundamentals of implementing load research procedures

    SciTech Connect (OSTI)

    Brandenburg, L.; Clarkson, G.; Grund, Jr., C.; Leo, J.; Asbury, J.; Brandon-Brown, F.; Derderian, H.; Mueller, R.; Swaroop, R.

    1980-11-01

    This three-volume manual presents technical guidelines for electric utility load research. Special attention is given to issues raised by the load data reporting requirements of the Public Utility Regulatory Policies Act of 1978 and to problems faced by smaller utilities that are initiating load research programs. In Volumes 1 and 2, procedures are suggested for determining data requirements for load research, establishing the size and customer composition of a load survey sample, selecting and using equipment to record customer electricity usage, processing data tapes from the recording equipment, and analyzing the data. Statistical techniques used in customer sampling are discussed in detail. The costs of load research also are estimated, and ongoing load research programs at three utilities are described. The manual includes guides to load research literature and glossaries of load research and statistical terms.

  5. High voltage load resistor array

    DOE Patents [OSTI]

    Lehmann, Monty Ray (Smithfield, VA)

    2005-01-18

    A high voltage resistor comprising an array of a plurality of parallel electrically connected resistor elements each containing a resistive solution, attached at each end thereof to an end plate, and about the circumference of each of the end plates, a corona reduction ring. Each of the resistor elements comprises an insulating tube having an electrode inserted into each end thereof and held in position by one or more hose clamps about the outer periphery of the insulating tube. According to a preferred embodiment, the electrode is fabricated from stainless steel and has a mushroom shape at one end, that inserted into the tube, and a flat end for engagement with the end plates that provides connection of the resistor array and with a load.

  6. Technical Assistance to ISO's and Grid Operators For Loads Providing...

    Office of Environmental Management (EM)

    & Publications Loads Providing Ancillary Services: Review of International Experience Demand Response and Energy Storage Integration Study - Past Workshops Load Participation...

  7. The AdS/CFT Correspondence and Light-Front QCD

    E-Print Network [OSTI]

    Stanley J. Brodsky; Guy F. de Teramond

    2008-10-10

    We identify an invariant light-front coordinate $\\zeta$ which allows the separation of the dynamics of quark and gluon binding from the kinematics of constituent spin and internal orbital angular momentum. The result is a single-variable light-front Schrodinger equation for QCD which determines the eigenspectrum and the light-front wavefunctions of hadrons for general spin and orbital angular momentum. This frame-independent light-front wave equation is equivalent to the equations of motion which describe the propagation of spin-$J$ modes on anti-de Sitter (AdS) space. Light-front holography is a remarkable feature of AdS/CFT: it allows hadronic amplitudes in the AdS fifth dimension to be mapped to frame-independent light-front wavefunctions of hadrons in physical space-time, thus providing a relativistic description of hadrons at the amplitude level. In principle, the model can be systematically improved by diagonalizing the full QCD light-front Hamiltonian on the AdS/QCD basis. Quark and gluon hadronization can be computed at the amplitude level by convoluting the off-shell $T$ matrix calculated from the QCD light-front Hamiltonian with the hadronic light-front wavefunctions. We also note the distinction between static observables such as the probability distributions computed from the square of the light-front wavefunctions versus dynamical observables such as the structure functions and the leading-twist single-spin asymmetries measured in deep inelastic scattering which include the effects of initial and final-state interactions.

  8. NEUTRON WALL LOADING OF TOKAMAK REACTORS

    E-Print Network [OSTI]

    California at Los Angeles, University of

    GA­A23223 NEUTRON WALL LOADING OF TOKAMAK REACTORS by C.P.C. WONG OCTOBER 1999 #12;DISCLAIMER Government or any agency thereof. #12;GA­A23223 NEUTRON WALL LOADING OF TOKAMAK REACTORS by C.P.C. WONG by General Atomics IR&D Funds GA PROJECT 4437 OCTOBER 1999 #12;C.P.C. WONG NEUTRON WALL LOADING OF TOKAMAK

  9. Measured Peak Equipment Loads in Laboratories

    SciTech Connect (OSTI)

    Mathew, Paul A.

    2007-09-12

    This technical bulletin documents measured peak equipment load data from 39 laboratory spaces in nine buildings across five institutions. The purpose of these measurements was to obtain data on the actual peak loads in laboratories, which can be used to rightsize the design of HVAC systems in new laboratories. While any given laboratory may have unique loads and other design considerations, these results may be used as a 'sanity check' for design assumptions.

  10. SiGe receiver front ends and flip-chip integrated wideband antennas for millimeter-wave passive imaging

    E-Print Network [OSTI]

    Powell, Johnna, 1980-

    2009-01-01

    SiGe wideband 77-GHz and 94-GHz front end receivers with integrated antennas for passive imaging have been designed and characterized. These front end systems exhibit wideband performance with the highest gain and lowest ...

  11. History of Load Participation in ERCOT

    SciTech Connect (OSTI)

    Patterson, Mark

    2011-10-25

    Presentation on demand integration by ERCOT for a DOE Workshop. Covers history of load participation in ERCOT from 2002 to present.

  12. Decentralized customerlevel under frequency load shedding in...

    Open Energy Info (EERE)

    Decentralized customerlevel under frequency load shedding in Switzerland (Smart Grid Project) Jump to: navigation, search Project Name Decentralized customerlevel under frequency...

  13. Load Participation in Ancillary Services Workshop Report

    SciTech Connect (OSTI)

    Kirby, Brendan; O'Malley, Mark; Ma, Ookie; Cappers, Peter; Corbus, Dave; Kiliccote, Sila; Onar, Omer; Starke, Michael; Steinberg, Dan

    2011-10-25

    Developing load participation in ancillary services to the electric grid. Challenges: coordination among multiple entities, targeted R&D for market conditions and regulatory and policy environments.

  14. Building Technologies Office Load Control Strategies

    Broader source: Energy.gov [DOE]

    BTO researches and implements load control strategies, which support the Sustainable and Holistic IntegratioN of Energy storage and Solar PV (SHINES) FOA.

  15. FINAL PROJECT REPORT LOAD MODELING TRANSMISSION RESEARCH

    E-Print Network [OSTI]

    Lesieutre, Bernard

    2013-01-01

    of individual appliances. For off-grid applications, solarinappropriate load for an off-grid solar system. Increasedsolar systems in general, and off-grid solar systems in

  16. Playing Tag with ANN: Boosted Top Identification with Pattern Recognition

    E-Print Network [OSTI]

    Leandro G. Almeida; Mihailo Backovic; Mathieu Cliche; Seung J. Lee; Maxim Perelstein

    2015-01-23

    Many searches for physics beyond the Standard Model at the Large Hadron Collider (LHC) rely on top tagging algorithms, which discriminate between boosted hadronic top quarks and the much more common jets initiated by light quarks and gluons. We note that the hadronic calorimeter (HCAL) effectively takes a "digital image" of each jet, with pixel intensities given by energy deposits in individual HCAL cells. Viewed in this way, top tagging becomes a canonical pattern recognition problem. With this motivation, we present a novel top tagging algorithm based on an Artificial Neural Network (ANN), one of the most popular approaches to pattern recognition. The ANN is trained on a large sample of boosted tops and light quark/gluon jets, and is then applied to independent test samples. The ANN tagger demonstrated excellent performance in a Monte Carlo study: for example, for jets with p_T in the 1100-1200 GeV range, 60% top-tag efficiency can be achieved with a 4% mis-tag rate. We discuss the physical features of the jets identified by the ANN tagger as the most important for classification, as well as correlations between the ANN tagger and some of the familiar top-tagging observables and algorithms.

  17. Top quark production and properties at the Tevatron

    SciTech Connect (OSTI)

    Fiedler, Frank; /Munich U.

    2005-06-01

    The precise measurement of top quark production and properties is one of the primary goals of the Tevatron during Run II. The total t{bar t} production cross-section has been measured in a large variety of decay channels and using different selection criteria. Results from differential cross-section measurements and searches for new physics in t{bar t} production and top quark decays are available. Electroweak production of single top quarks has been searched for. The results from all these analyses, using typically 200 pb{sup -1} of data, are presented.

  18. Search for New Physics in Rare Top Decays

    E-Print Network [OSTI]

    Pratishruti Saha

    2014-11-27

    Top physics provides a fertile ground for new-physics searches. At present, most top observables appear to be in good agreement with the respective Standard Model predictions. However, in the case of decay modes that are suppressed in the Standard Model, new-physics contributions of comparable magnitude may exist and yet go unnoticed because their impact on the total decay width is small. Hence it is interesting to probe rare top decays. This analysis focuses on the decay $t \\to b \\bar b c$. Useful observables are identified and prospects for measuring new-physics parameters are examined.

  19. Probing top flavour-changing neutral couplings at TESLA

    E-Print Network [OSTI]

    J. A. Aguilar-Saavedra; T. Riemann

    2001-02-20

    We present a comprehensive analysis of the sensitivity of the TESLA e+ e- collider to top flavour-changing neutral couplings to the Z boson and photon. We study single top production and top decay processes, and we consider the cases without beam polarization, with only e- polarization and with e- and e+ polarization. We show that the use of the latter substantially enhances the sensitivity to discover or bound these vertices, and for some of the couplings the expected LHC limits could be improved by factors 2-14 for equal running times.

  20. Inhibition of slug front corrosion in multiphase flow conditions

    SciTech Connect (OSTI)

    Chen, H.J.; Jepson, W.P.

    1998-12-31

    Corrosion at the slug front at the bottom of a pipeline is identified as one of the worst cases of corrosion occurring in the pipeline which carries unprocessed multiphase production with a high level of CO{sub 2} gas. One objective of the study in recommending a subsea completion to shore was to determine if commercial corrosion inhibitors can control this type of corrosion using carbon steel pipeline. Thus, inhibitors which showed excellent performance in the lab using the Rotating Cylinder Electrode system (RCE) were further evaluated to confirm their performance in a flow loop simulating the test conditions predicted from the flow modeling for the proposed pipeline. The performance profile of two commercial inhibitors were determined in a 4 in. flow loop at 7O C, 100 psig CO{sub 2} partial pressure in corrosive brines with or without ethylene glycol and/or light hydrocarbon. Results showed that the carbon steel pipeline could be adequately protected at low temperature using a commercial corrosion inhibitor to meet the designed life of the pipeline. Ethylene glycol, which is used in the pipeline to prevent hydrate formation, reduces the corrosivity of the brine and gives no effect on inhibitor performance under the slug flow conditions. A good agreement in inhibitor performance was observed between the flow loop and the RCE testing. The uninhibited corrosion rate of the test brine in this study is in good agreement with the predicted value using deWaard and Williams correlation for CO{sub 2} corrosion.

  1. Double parton correlations in Light-Front constituent quark model

    E-Print Network [OSTI]

    Matteo Rinaldi; Sergio Scopetta; Marco Traini; Vicente Vento

    2014-12-09

    Double parton distribution functions (dPDF) represent a tool to explore the 3D proton structure. They can be measured in high energy proton-proton and proton nucleus collisions and encode information on how partons inside a proton are correlated among each other. dPFDs are studied here in the valence quark region, by means of a constituent quark model, where two particle correlations are present without any additional prescription. This framework allows to understand the dynamical origin of the correlations and to clarify which, among the features of the results, are model independent. Use will be made of a relativistic light-front scheme, able to overcome some drawbacks of the previous calculation. Transverse momentum correlations, due to the exact treatment of the boosts, are predicted and analyzed. The role of spin correlations is also shown. Due to the covariance of the approach, some symmetries of the dPDFs are seen unambigously. For the valence sector, the study of the QCD evolution of the model results, which can be performed safely thanks to the property of good support, has been also completed.

  2. Light-Front Holography, AdS/QCD, and Hadronic Phenomena

    E-Print Network [OSTI]

    Stanley J. Brodsky; Guy F. de Teramond

    2009-09-22

    AdS/QCD, the correspondence between theories in a modified five-dimensional anti-de Sitter space and confining field theories in physical space-time, provides a remarkable semiclassical model for hadron physics. Light-front holography allows hadronic amplitudes in the AdS fifth dimension to be mapped to frame-independent light-front wavefunctions of hadrons in physical space-time, thus providing a relativistic description of hadrons at the amplitude level. We identify the AdS coordinate $z$ with an invariant light-front coordinate $\\zeta$ which separates the dynamics of quark and gluon binding from the kinematics of constituent spin and internal orbital angular momentum. The result is a single-variable light-front Schr\\"odinger equation with a confining potential which determines the eigenspectrum and the light-front wavefunctions of hadrons for general spin and orbital angular momentum. The mapping of electromagnetic and gravitational form factors in AdS space to their corresponding expressions in light-front theory confirms this correspondence. Some novel features of QCD are discussed, including the consequences of confinement for quark and gluon condensates. The distinction between static structure functions, such as the probability distributions computed from the square of the light-front wavefunctions, versus dynamical structure functions which include the effects of rescattering, is emphasized. A new method for computing the hadronization of quark and gluon jets at the amplitude level, an event amplitude generator, is outlined.

  3. Top-down modulation of hippocampal encoding activity as measured by high-resolution functional MRI

    E-Print Network [OSTI]

    2013-01-01

    D'Esposito, M. (2005). Top- down enhancement and suppressionformation – are modulated by top-down in?uences. Earlyunderstanding of the effects of top-down goal states on MTL

  4. California's Top Two Primary and the Challenge of Making Real Change

    E-Print Network [OSTI]

    Cornu, Sharon

    2015-01-01

    California’s Top Two Primary and the Challenge of MakingIt’s how I feel about the Top Two: it’s not going to improveor your productivity. The Top Two is reform of our political

  5. Why Voters May Have Failed to Reward Proximate Candidates in the 2012 Top Two Primary

    E-Print Network [OSTI]

    Ahler, Douglas; Citrin, Jack; Lenz, Gabriel S

    2015-01-01

    and Gabriel S. Lenz. 2014. “Do Top-Two Primaries ImproveTest of California’s 2012 Top-Two Primary. ” Bafumi, Joseph,Assessing California’s Top-Two Primary and Redistricting

  6. Top of Mind in Task-Based Environments and Choice Under Risk

    E-Print Network [OSTI]

    Zaidi, Farhan

    2010-01-01

    biases that influence what is top of mind for consumers inZinman. “Getting to the Top of Mind: How Reminders IncreaseTop of Mind in Task-Based Environments and Choice Under Risk

  7. Top-Down Influences on Local Networks: Basic Theory with Experimental Implications

    E-Print Network [OSTI]

    Srinivasan, Ramesh; Thorpe, Samuel; Nunez, Paul L

    2013-01-01

    lations and synchrony in top-down processing. Nat. Rev.functional coupling during top- down processing in a workingstate visual evoked potentials Top-down influences on local

  8. Top-down modification of bottom-up processes: selective grazing reduces macroalgal nitrogen uptake

    E-Print Network [OSTI]

    Bracken, MES; Stachowicz, J J

    2007-01-01

    flow and clear plastic tops to maximize light penetration.RC, Kohrs DG, Alberte RS (1996) Top-down im- pact through aSer Published January 25 Top-down modification of bottom-up

  9. The Top-Two, Take Two: Did Changing the Rules Change the Game in Statewide Contests?

    E-Print Network [OSTI]

    Kousser, Thad

    2015-01-01

    Assessing California’s Top-Two Primary and RedistrictingThe Top-Two, Take Two: Did Changing the Rules Change therules implemented by California’s top-two system change the

  10. Strategies for Controlling Plug Loads. A Tool for Reducing Plug Loads in Commercial Buildings

    SciTech Connect (OSTI)

    Torcellini, Paul; Bonnema, Eric; Sheppy, Michael; Pless, Shanti

    2015-09-01

    Plug loads are often not considered as part of the energy savings measures in Commercial Buildings; however, they can account for up to 50% of the energy used in the building. These loads are numerous and often scattered throughout a building. Some of these loads are purchased by the owner and some designed into the building or the tenant finishes for a space. This document provides a strategy and a tool for minimizing these loads.

  11. Travelling fronts of the CO oxidation on Pd(111) with coverage-dependent diffusion

    SciTech Connect (OSTI)

    Cisternas, Jaime, E-mail: jecisternas@miuandes.cl [Facultad de Ingeniería y Ciencias Aplicadas, Universidad de los Andes, Monseñor Alvaro del Portillo 12455, Las Condes, Santiago (Chile); Karpitschka, Stefan [Physics of Fluids, University of Twente, Drienerlolaan 5, 7522 NB Enschede (Netherlands); Wehner, Stefan [Institut für Integrierte Naturwissenschaften - Physik, Universität Koblenz-Landau, 56070 Koblenz (Germany)

    2014-10-28

    In this work, we study a surface reaction on Pd(111) crystals under ultra-high-vacuum conditions that can be modeled by two coupled reaction-diffusion equations. In the bistable regime, the reaction exhibits travelling fronts that can be observed experimentally using photo electron emission microscopy. The spatial profile of the fronts reveals a coverage-dependent diffusivity for one of the species. We propose a method to solve the nonlinear eigenvalue problem and compute the direction and the speed of the fronts based on a geometrical construction in phase-space. This method successfully captures the dependence of the speed on control parameters and diffusivities.

  12. A new approach to front-­?end electronics interfacing in the ATLAS experiment

    E-Print Network [OSTI]

    Borga, Andrea; The ATLAS collaboration; Lanni, Francesco; Lehmann Miotto, Giovanna; Levinson, Lorne; Narevicius, Julia; Roich, Alexander; Schreuder, Frans Philip; Schumacher, J\\"orn; Vandelli, Wainer; Vermeulen, Jos; Ryu, Soo; Zhang, Jinlong; Anderson, John Thomas; Boterenbrood, Hendrik; Chen, Kai; Chen, Hucheng; Drake, Gary; Donszelmann, Mark; Francis, David

    2015-01-01

    For new detector and trigger systems to be installed in the ATLAS experiment after LHC Run 2 a new approach will be followed for front-end electronics interfacing. The FELIX (Front-End Link eXchange) system will interface to links connecting to front-end detector and trigger electronics instead of the RODs (ReadOut Drivers) currently used. FELIX will function as a gateway to a commodity switched network built using standard technology (either Ethernet or Infiniband). In the paper the new approach will be described and results of the demonstrator program currently in progress will be presented.

  13. Terascale Optimal PDE Simulations (TOPS) Center

    SciTech Connect (OSTI)

    Professor Olof B. Widlund

    2007-07-09

    Our work has focused on the development and analysis of domain decomposition algorithms for a variety of problems arising in continuum mechanics modeling. In particular, we have extended and analyzed FETI-DP and BDDC algorithms; these iterative solvers were first introduced and studied by Charbel Farhat and his collaborators, see [11, 45, 12], and by Clark Dohrmann of SANDIA, Albuquerque, see [43, 2, 1], respectively. These two closely related families of methods are of particular interest since they are used more extensively than other iterative substructuring methods to solve very large and difficult problems. Thus, the FETI algorithms are part of the SALINAS system developed by the SANDIA National Laboratories for very large scale computations, and as already noted, BDDC was first developed by a SANDIA scientist, Dr. Clark Dohrmann. The FETI algorithms are also making inroads in commercial engineering software systems. We also note that the analysis of these algorithms poses very real mathematical challenges. The success in developing this theory has, in several instances, led to significant improvements in the performance of these algorithms. A very desirable feature of these iterative substructuring and other domain decomposition algorithms is that they respect the memory hierarchy of modern parallel and distributed computing systems, which is essential for approaching peak floating point performance. The development of improved methods, together with more powerful computer systems, is making it possible to carry out simulations in three dimensions, with quite high resolution, relatively easily. This work is supported by high quality software systems, such as Argonne's PETSc library, which facilitates code development as well as the access to a variety of parallel and distributed computer systems. The success in finding scalable and robust domain decomposition algorithms for very large number of processors and very large finite element problems is, e.g., illustrated in [24, 25, 26]. This work is based on [29, 31]. Our work over these five and half years has, in our opinion, helped advance the knowledge of domain decomposition methods significantly. We see these methods as providing valuable alternatives to other iterative methods, in particular, those based on multi-grid. In our opinion, our accomplishments also match the goals of the TOPS project quite closely.

  14. Apparatus for loading a band saw blade

    DOE Patents [OSTI]

    Reeves, S.R.

    1990-03-20

    A band saw blade is loaded between pairs of guide wheels upon tensioning the blade by guiding the blade between pairs of spaced guide plates which define converging slots that converge toward the guide wheels. The approach is particularly useful in loading blades on underwater band saw machines used to cut radioactive materials. 2 figs.

  15. Nonparametric models for electricity load forecasting

    E-Print Network [OSTI]

    Genève, Université de

    Electricity consumption is constantly evolving due to changes in people habits, technological innovations1 Nonparametric models for electricity load forecasting JANUARY 23, 2015 Yannig Goude, Vincent at University Paris-Sud 11 Orsay. His research interests are electricity load forecasting, more generally time

  16. Apparatus for loading a band saw blade

    DOE Patents [OSTI]

    Reeves, Steven R. (49 Williams Ave., West Valley, NY 14171)

    1990-01-01

    A band saw blade is loaded between pairs of guide wheels upon tensioning the blade by guiding the blade between pairs of spaced guide plates which define converging slots that converge toward the guide wheels. The approach is particularly useful in loading blades on underwater band saw machines used to cut radioactive materials.

  17. Harmonic Load Pull of High-Power Microwave Devices using Fundamental-Only Load Pull Tuners

    E-Print Network [OSTI]

    Popovic, Zoya

    Harmonic Load Pull of High-Power Microwave Devices using Fundamental-Only Load Pull Tuners John-frequency load pull tuners. Harmonic impedance control at the virtual drain is accomplished through the use the dramatic impact of varying 2nd harmonic termination. A 3rd harmonic termination is added to satisfy

  18. Using Utility Load Data to Estimate Demand for Space Cooling and Potential for Shiftable Loads

    SciTech Connect (OSTI)

    Denholm, P.; Ong, S.; Booten, C.

    2012-05-01

    This paper describes a simple method to estimate hourly cooling demand from historical utility load data. It compares total hourly demand to demand on cool days and compares these estimates of total cooling demand to previous regional and national estimates. Load profiles generated from this method may be used to estimate the potential for aggregated demand response or load shifting via cold storage.

  19. Generator Response to Load Variation The below table summarizes the way that load variation is

    E-Print Network [OSTI]

    McCalley, James D.

    1 Generator Response to Load Variation The below table summarizes the way that load variation is allocated to generators in a power system. In these notes, we derive the proximity effect, the inertial, constant impedance loads, and the network reduced to generator internal nodes. This expression was: { }00

  20. Cotton response to over-the-top trifloxysulfuron sodium applications 

    E-Print Network [OSTI]

    Hoffman, Steven Matthew,1978-

    2003-01-01

    Envoke® (common name: trifloxysulfuron sodium), is a new sulfonylurea herbicide developed by Syngenta for over-the-top application to cotton. A two-year study was conducted with concurrent field and greenhouse experiments ...