Sample records for accuracy sections onlinenote

  1. A Time Projection Chamber for High Accuracy and Precision Fission Cross-Section Measurements

    SciTech Connect (OSTI)

    T. Hill; K. Jewell; M. Heffner; D. Carter; M. Cunningham; V. Riot; J. Ruz; S. Sangiorgio; B. Seilhan; L. Snyder; D. M. Asner; S. Stave; G. Tatishvili; L. Wood; R. G. Baker; J. L. Klay; R. Kudo; S. Barrett; J. King; M. Leonard; W. Loveland; L. Yao; C. Brune; S. Grimes; N. Kornilov; T. N. Massey; J. Bundgaard; D. L. Duke; U. Greife; U. Hager; E. Burgett; J. Deaven; V. Kleinrath; C. McGrath; B. Wendt; N. Hertel; D. Isenhower; N. Pickle; H. Qu; S. Sharma; R. T. Thornton; D. Tovwell; R. S. Towell; S.

    2014-09-01T23:59:59.000Z

    The fission Time Projection Chamber (fissionTPC) is a compact (15 cm diameter) two-chamber MICROMEGAS TPC designed to make precision cross-section measurements of neutron-induced fission. The actinide targets are placed on the central cathode and irradiated with a neutron beam that passes axially through the TPC inducing fission in the target. The 4p acceptance for fission fragments and complete charged particle track reconstruction are powerful features of the fissionTPC which will be used to measure fission cross-sections and examine the associated systematic errors. This paper provides a detailed description of the design requirements, the design solutions, and the initial performance of the fissionTPC.

  2. Beryllium and Graphite High-Accuracy Total Cross-Section Measurements in the Energy Range from 24 to 900 keV

    E-Print Network [OSTI]

    Danon, Yaron

    Beryllium and Graphite High-Accuracy Total Cross-Section Measurements in the Energy Range from 24 new measurements of the carbon and beryllium neutron total cross section in the energy range of 24. Measurements of three samples of different thicknesses of beryllium resulted in accurate total cross

  3. High accuracy determination of the $^{238}$U/$^{235}$U fission cross section ratio up to $\\sim$1 GeV at n_TOF (CERN)

    E-Print Network [OSTI]

    C. Paradela; M. Calviani; D. Tarr\\'\\io; E. Leal-Cidoncha; L. S. Leong; L. Tassan-Got; C. Le Naour; I. Duran; N. Colonna; L. Audouin; M. Mastromarco; S. Lo Meo; A. Ventura; S. Altstadt; J. Andrzejewski; M. Barbagallo; V. Bécares; F. Be?vá?; F. Belloni; E. Berthoumieux; J. Billowes; V. Boccone; D. Bosnar; M. Brugger; F. Calviño; D. Cano-Ott; C. Carrapiço; F. Cerutti; E. Chiaveri; M. Chin; G. Cortés; M. A. Cortés-Giraldo; L. Cosentino; M. Diakaki; C. Domingo-Pardo; R. Dressler; C. Eleftheriadis; A. Ferrari; P. Finocchiaro; K. Fraval; S. Ganesan; A. R. García; G. Giubrone; M. B. Gómez-Hornillos; I. F. Gonçalves; E. González-Romero; E. Griesmayer; C. Guerrero; F. Gunsing; P. Gurusamy; S. Heinitz; D. G. Jenkins; E. Jericha; F. Käppeler; D. Karadimos; N. Kivel; M. Kokkoris; M. Krti?ka; J. Kroll; C. Langer; C. Lederer; H. Leeb; R. Losito; A. Manousos; J. Marganiec; T. Martínez; C. Massimi; P. Mastinu; E. Mendoza; A. Mengoni; P. M. Milazzo; F. Mingrone; M. Mirea; W. Mondalaers; A. Musumarra; A. Pavlik; J. Perkowski; A. Plompen; J. Praena; J. Quesada; T. Rauscher; R. Reifarth; A. Riego; F. Roman; C. Rubbia; R. Sarmento; A. Saxena; P. Schillebeeckx; S. Schmidt; D. Schumann; G. Tagliente; J. L. Tain; A. Tsinganis; S. Valenta; G. Vannini; V. Variale; P. Vaz; R. Versaci; M. J. Vermeulen; V. Vlachoudis; R. Vlastou; A. Wallner; T. Ware; M. Weigand; C. Weiß; T. Wright; P. Žugec

    2014-10-29T23:59:59.000Z

    The $^{238}$U to $^{235}$U fission cross section ratio has been determined at n_TOF up to $\\sim$1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets have been collected and compared. They are all consistent to each other within the relative systematic uncertainty of 3-4%. The data collected at n_TOF have been suitably combined to yield a unique fission cross section ratio as a function of the neutron energy. The result confirms current evaluations up to 200 MeV. A good agreement is also observed with theoretical calculations based on the INCL++/Gemini++ combination up to the highest measured energy. The n_TOF results may help solving a long-standing discrepancy between the two most important experimental dataset available so far above 20 MeV, while extending the neutron energy range for the first time up to $\\sim$1 GeV.

  4. Effort-Accuracy” Trade off

    E-Print Network [OSTI]

    Megiddo

    2011-07-05T23:59:59.000Z

    the more time and resources the agent spends for exploration, the less he has ... and accuracy ( how efficient is a solution) are specific .... models optimization problems in Finsler environments, but effective implemen- ...... of Business, 59, No.

  5. SECTION B

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

    FY2015 is 200,000. SECTION V - PERFORMANCE REQUIREMENTS DEFINE COMPLETION: Specify Performance Elements and describe indicators of success (qualityprogress). Include...

  6. Section B

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

    121 B-i PART I - THE SCHEDULE SECTION B - SUPPLIES OR SERVICES AND PRICESCOSTS TABLE OF CONTENTS B.1 TYPE OF CONTRACT - ITEMS BEING ACQUIRED ......

  7. SECTION E

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

    - E8 - Electrical load list panel schedules - E9 - Details sections - EC - 480V motor control center schedules - Setroute report identifying released cables and raceway WTP...

  8. Gravitational waveforms with controlled accuracy

    E-Print Network [OSTI]

    Roberto Gomez

    2001-06-07T23:59:59.000Z

    A partially first-order form of the characteristic formulation is introduced to control the accuracy in the computation of gravitational waveforms produced by highly distorted single black hole spacetimes. Our approach is to reduce the system of equations to first-order differential form on the angular derivatives, while retaining the proven radial and time integration schemes of the standard characteristic formulation. This results in significantly improved accuracy over the standard mixed-order approach in the extremely nonlinear post-merger regime of binary black hole collisions.

  9. Evaluation procedure for building energy performance prediction tools: Accuracy and Home Energy Rating Systems---Issues and recommendations

    SciTech Connect (OSTI)

    Not Available

    1985-06-01T23:59:59.000Z

    This three section report explores the accuracy issues which affect Home Energy Rating Systems (HERS), briefly defined as procedures which rate the energy efficiency of single-family houses. The first section of this report reviews the problems of determining accuracy in HERS, concluding that acceptable accuracy varies with the audience and is greatly dependent upon the specific application. Section two examines the previous approaches to the determination of accuracy/validity of HERS which have predominantly relied upon primary and secondary testing methods. The final section investigates several different approaches to certify the accuracy of HERS, with the conclusion that field tests similar to those carried out in a Massachusetts HERS program be used to verify accuracy. 54 refs.

  10. Section J

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary of Energy Advisory Board FollowSection 3161L-1 Section J

  11. Section J

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary of Energy Advisory Board FollowSection 3161L-1 Section JM-1

  12. Section Number:

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary of Energy Advisory Board FollowSection 3161L-1 SectionIVV

  13. SECTION J

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin ofEnergy at Waste-to-EnergySEAB_Minutes_1_20_11.pdfSEB SecretariatJ-1 SECTION J

  14. SECTION J

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin ofEnergy at Waste-to-EnergySEAB_Minutes_1_20_11.pdfSEB SecretariatJ-1 SECTION JK-1

  15. High-accuracy measurements of the normal specular reflectance

    SciTech Connect (OSTI)

    Voarino, Philippe; Piombini, Herve; Sabary, Frederic; Marteau, Daniel; Dubard, Jimmy; Hameury, Jacques; Filtz, Jean Remy

    2008-05-01T23:59:59.000Z

    The French Laser Megajoule (LMJ) is designed and constructed by the French Commissariata l'Energie Atomique (CEA). Its amplifying section needs highly reflective multilayer mirrors for the flash lamps. To monitor and improve the coating process, the reflectors have to be characterized to high accuracy. The described spectrophotometer is designed to measure normal specular reflectance with high repeatability by using a small spot size of 100 {mu}m. Results are compared with ellipsometric measurements. The instrument can also perform spatial characterization to detect coating nonuniformity.

  16. Higgs boson decay into b-quarks at NNLO accuracy

    E-Print Network [OSTI]

    Del Duca, Vittorio; Somogyi, Gabor; Tramontano, Francesco; Trocsanyi, Zoltan

    2015-01-01T23:59:59.000Z

    We compute the fully differential decay rate of the Standard Model Higgs boson into b-quarks at next-to-next-to-leading order (NNLO) accuracy in alpha_S. We employ a general subtraction scheme developed for the calculation of higher order perturbative corrections to QCD jet cross sections, which is based on the universal infrared factorization properties of QCD squared matrix elements. We show that the subtractions render the various contributions to the NNLO correction finite. In particular, we demonstrate analytically that the sum of integrated subtraction terms correctly reproduces the infrared poles of the two-loop double virtual contribution to this process. We present illustrative differential distributions obtained by implementing the method in a parton level Monte Carlo program. The basic ingredients of our subtraction scheme, used here for the first time to compute a physical observable, are universal and can be employed for the computation of more involved processes.

  17. Computing High Accuracy Power Spectra with Pico

    E-Print Network [OSTI]

    William A. Fendt; Benjamin D. Wandelt

    2007-12-02T23:59:59.000Z

    This paper presents the second release of Pico (Parameters for the Impatient COsmologist). Pico is a general purpose machine learning code which we have applied to computing the CMB power spectra and the WMAP likelihood. For this release, we have made improvements to the algorithm as well as the data sets used to train Pico, leading to a significant improvement in accuracy. For the 9 parameter nonflat case presented here Pico can on average compute the TT, TE and EE spectra to better than 1% of cosmic standard deviation for nearly all $\\ell$ values over a large region of parameter space. Performing a cosmological parameter analysis of current CMB and large scale structure data, we show that these power spectra give very accurate 1 and 2 dimensional parameter posteriors. We have extended Pico to allow computation of the tensor power spectrum and the matter transfer function. Pico runs about 1500 times faster than CAMB at the default accuracy and about 250,000 times faster at high accuracy. Training Pico can be done using massively parallel computing resources, including distributed computing projects such as Cosmology@Home. On the homepage for Pico, located at http://cosmos.astro.uiuc.edu/pico, we provide new sets of regression coefficients and make the training code available for public use.

  18. Improvements on the accuracy of beam bugs

    SciTech Connect (OSTI)

    Chen, Y.J.; Fessenden, T.

    1998-08-17T23:59:59.000Z

    At LLNL resistive wall monitors are used to measure the current and position used on ETA-II show a droop in signal due to a fast redistribution time constant of the signals. This paper presents the analysis and experimental test of the beam bugs used for beam current and position measurements in and after the fast kicker. It concludes with an outline of present and future changes that can be made to improve the accuracy of these beam bugs. of intense electron beams in electron induction linacs and beam transport lines. These, known locally as ''beam bugs'', have been used throughout linear induction accelerators as essential diagnostics of beam current and location. Recently, the development of a fast beam kicker has required improvement in the accuracy of measuring the position of beams. By picking off signals at more than the usual four positions around the monitor, beam position measurement error can be greatly reduced. A second significant source of error is the mechanical variation of the resistor around the bug.

  19. Why the Accuracy of Analytical Instrumentation Affects Boiler Combustion Efficiency 

    E-Print Network [OSTI]

    McFadden, R. W.

    1984-01-01T23:59:59.000Z

    process, accuracy of analysis is imperative to insure that the goal of increasing and maintaining thermal efficiency at its optimum value, is met. Accuracy, and the verification thereof is necessary in order to achieve the remaining effic~ency...

  20. Guiding Center Equations of High Accuracy

    SciTech Connect (OSTI)

    R.B. White, G. Spizzo and M. Gobbin

    2013-03-29T23:59:59.000Z

    Guiding center simulations are an important means of predicting the effect of resistive and ideal magnetohydrodynamic instabilities on particle distributions in toroidal magnetically confined thermonuclear fusion research devices. Because saturated instabilities typically have amplitudes of ?#14;B/B of a few times 10-4 numerical accuracy is of concern in discovering the effect of mode particle resonances. We develop a means of following guiding center orbits which is greatly superior to the methods currently in use. In the presence of ripple or time dependent magnetic perturbations both energy and canonical momentum are conserved to better than one part in 1014, and the relation between changes in canonical momentum and energy is also conserved to very high order.

  1. Section 1: Contact Information Section 2: Employment History

    E-Print Network [OSTI]

    Section 1: Contact Information Section 2: Employment History Section 3: Educational History Section 4: Additional Required Information Employment Application The Ernest Orlando Lawrence Berkeley National Laboratory is an equal opportunity employer committed to the development of a diverse workforce

  2. 14655 Section J

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

    0, Revision 4 ATTACHMENT J.10 WAGE DETERMINATIONS - SERVICE CONTRACT ACT (SCA) AND DAVIS-BACON ACT J.10-1 Plateau Remediation Contract Section J Contract No. DE-AC06-08RL14788...

  3. Building, landscape and section

    E-Print Network [OSTI]

    Johnson, Daniel B. (Daniel Bryant)

    1992-01-01T23:59:59.000Z

    All buildings have in their section a relationship to the landscape on which they are sited. Therefore we as inhabitants of these buildings may or may not have a relationship with the landscape. It is the supposition of ...

  4. Name: ) Section: ' PID:

    E-Print Network [OSTI]

    MATH 173 ' Quiz 4 Thursday Sep. 23. Name: ) Section: ' PID: Solve the problem systematically and neatly and show all your work. 1.(3pts) Find the length of the ...

  5. A new diagnostic for the relative accuracy of Euler codes

    E-Print Network [OSTI]

    C. R. Doering; J. D. Gibbon; D. D. Holm

    2010-02-15T23:59:59.000Z

    A procedure is suggested for testing the resolution and comparing the relative accuracy of numerical schemes for integration of the incompressible Euler equations.

  6. accuracy mass spectrometry: Topics by E-print Network

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

    Milos 2 High Mass Accuracy and High Mass Resolving Power FT-ICR Secondary Ion Mass Spectrometry for Biological Tissue Imaging CERN Preprints Summary: Biological tissue imaging by...

  7. Section D - G

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary of Energy Advisory Board FollowSection 3161 SECTION BPART

  8. Introduction Introduction Section 1

    E-Print Network [OSTI]

    of many people. These people share a love for the Deschutes, though they value the river in many different. The voices of many of people throughout the Deschutes subbasin were heard during the subbasin planningIntroduction Introduction Section 1 Now as in the past, The Deschutes River binds the people

  9. POLICY SECTIONS POLICY OFFICE

    E-Print Network [OSTI]

    Minnesota, University of

    POLICY SECTIONS POLICY OFFICE POLICIES FORMS PROCEDURES UNIVERSITY POLICY #12;guide to WRITING POLICIES Administrative policies align opera- tions, set behavior expectations across the University system and communicate policy roles and responsibilities. You, as the policy owner or writer, have the important task

  10. Inclusive jet cross section measurement at D0

    E-Print Network [OSTI]

    M. Voutilainen

    2006-09-15T23:59:59.000Z

    We present a new preliminary measurement of the inclusive jet cross section in pp-bar collisions based on a integrated luminosity of about 0.8 fb-1. The data were acquired using the D0 detector between 2002 and 2005. Jets are reconstructed using an iterative cone algorithm with radius R_cone = 0.7. The inclusive jet cross section is presented as a function of transverse jet momentum and rapidity. Predictions from perturbative QCD in next-to-leading order, plus threshold corrections in 2-loop accuracy describe the shape in the transverse jet momentum.

  11. Qualification for PowerInsight accuracy of power measurements.

    SciTech Connect (OSTI)

    DeBonis, David; Laros, James H.,; Pedretti, Kevin Thomas Tauke

    2013-11-01T23:59:59.000Z

    Accuracy of component based power measuring devices forms a necessary basis for research in the area of power-e cient and power-aware computing. The accuracy of these devices must be quanti ed within a reasonable tolerance. This study focuses on PowerInsight, an out- of-band embedded measuring device which takes readings of power rails on compute nodes within a HPC system in realtime. We quantify how well the device performs in comparison to a digital oscilloscope as well as PowerMon2. We show that the accuracy is within a 6% deviation on measurements under reasonable load.

  12. Post-Construction Evaluation of Forecast Accuracy Pavithra Parthasarathi1

    E-Print Network [OSTI]

    Levinson, David M.

    Post-Construction Evaluation of Forecast Accuracy Pavithra Parthasarathi1 David Levinson 2 February, the assumed networks to the actual in-place networks and other travel behavior assumptions that went

  13. Digital radix converters for high accuracy data conversion 

    E-Print Network [OSTI]

    Ghanta, Venkataratnam Chowdary

    1993-01-01T23:59:59.000Z

    A sub-binary radix Digital to Analog converter(DAC) which achieves high effective resolution is demonstrated. The converter does not have any built-in-self calibration mechanisms, but achieves high resolution and accuracy through the sub...

  14. Accuracy of Reduced and Extended Thin-Wire Kernels

    SciTech Connect (OSTI)

    Burke, G J

    2008-11-24T23:59:59.000Z

    Some results are presented comparing the accuracy of the reduced thin-wire kernel and an extended kernel with exact integration of the 1/R term of the Green's function and results are shown for simple wire structures.

  15. Improving the Accuracy of Solar Forecasting Funding Opportunity

    Broader source: Energy.gov [DOE]

    Through the Improving the Accuracy of Solar Forecasting Funding Opportunity, DOE is funding solar projects that are helping utilities, grid operators, solar power plant owners, and other...

  16. accuracy power spectra: Topics by E-print Network

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

    A. Fendt; Benjamin D. Wandelt 2007-12-02 2 Power Spectra to 1% Accuracy between Dynamical Dark Energy Cosmologies Astrophysics (arXiv) Summary: For dynamical dark energy...

  17. Power Spectra to 1% Accuracy between Dynamical Dark Energy Cosmologies

    E-Print Network [OSTI]

    Matthew J. Francis; Geraint F. Lewis; Eric V. Linder

    2007-04-03T23:59:59.000Z

    For dynamical dark energy cosmologies we carry out a series of N-body gravitational simulations, achieving percent level accuracy in the relative mass power spectra at any redshift. Such accuracy in the power spectrum is necessary for next generation cosmological mass probes. Our matching procedure reproduces the CMB distance to last scattering and delivers subpercent level power spectra at z=0 and z~3. We discuss the physical implications for probing dark energy with surveys of large scale structure.

  18. Using Subjective Confidence to Improve Metacognitive Monitoring Accuracy and Control

    E-Print Network [OSTI]

    Miller, Tyler

    2012-10-19T23:59:59.000Z

    USING SUBJECTIVE CONFIDENCE TO IMPROVE METACOGNITIVE MONITORING ACCURACY AND CONTROL A Dissertation by TYLER MICHAEL MILLER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... Michael Miller USING SUBJECTIVE CONFIDENCE TO IMPROVE METACOGNITIVE MONITORING ACCURACY AND CONTROL A Dissertation by TYLER MICHAEL MILLER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

  19. Section I: Contract Clause

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary of Energy Advisory Board FollowSection 3161

  20. Beryllium and Graphite Neutron Total Cross-Section Measurements from 0.4 to 20 MeV

    E-Print Network [OSTI]

    Danon, Yaron

    Beryllium and Graphite Neutron Total Cross-Section Measurements from 0.4 to 20 MeV M. J. Rapp,* Y of the neutron total cross section of natural beryllium and carbon (graphite) in the energy range of 0.4 to 20 Me a verification of the accuracy in the measurement and analytical methods used. The measurements of beryllium

  1. pi+- p differential cross sections at low energies

    SciTech Connect (OSTI)

    H. Denz; P. Amaudruz; J.T. Brack; J. Breitschopf; P. Camerini; J.L. Clark; H. Clement; L. Felawka; E. Fragiacomo; E.F. Gibson; N. Grion; G.J. Hofman; B. Jamieson; E.L. Mathie; R. Meier; G. Moloney; D. Ottewell; O. Patarakin; J.D. Patterson; M.M. Pavan; S. Piano; K. Raywood; R.A. Ristinen; R. Rui; M.E. Sevior; G.R. Smith; J. Stahov; R. Tacik; G.J. Wagner; F. von Wrochem; D.M. Yeomans

    2005-12-03T23:59:59.000Z

    Differential cross sections for pi- p and pi+ p elastic scattering were measured at five energies between 19.9 and 43.3 MeV. The use of the CHAOS magnetic spectrometer at TRIUMF, supplemented by a range telescope for muon background suppression, provided simultaneous coverage of a large part of the full angular range, thus allowing very precise relative cross section measurements. The absolute normalization was determined with a typical accuracy of 5 %. This was verified in a simultaneous measurement of muon proton elastic scattering. The measured cross sections show some deviations from phase shift analysis predictions, in particular at large angles and low energies. From the new data we determine the real part of the isospin forward scattering amplitude.

  2. Gerda POSSNIG: Study of accuracy and availability of the realtime positioningsystem of Carinthia

    E-Print Network [OSTI]

    Schuh, Harald

    Gerda POSSNIG: Study of accuracy and availability of the realtime positioningsystem of Carinthia (completed in May 2002) This diploma thesis deals with the accuracy and availability

  3. Anatomic measurement accuracy: CT parameters and 3D rendering effects

    E-Print Network [OSTI]

    Vorperian, Houri K.

    Anatomic measurement accuracy: CT parameters and 3D rendering effects Brian J Whyms a, E Michael of Neuroscience #12;INTRODUCTION · Measurements from 3D-CT rendering are used in research and clinical management-CT rendering techniques on measurements #12;METHODS Scanned: · 3 human mandibles · a phantom object Phantom

  4. Computing Invariants with Transformers: Experimental Scalability and Accuracy

    E-Print Network [OSTI]

    NSAD 2014 Computing Invariants with Transformers: Experimental Scalability and Accuracy Vivien as transformers, and then propagate the preconditions using the transformers. The second approach is modular the call graph and all the control flow graphs. However, the transformer approach based on polyhedral

  5. An evaluation of inductance loop detectors for speed measurement accuracy

    E-Print Network [OSTI]

    Cronin, Brian Patrick

    1994-01-01T23:59:59.000Z

    . The lag time from the presence of a vehicle at an inductance loop to the actual detection of a vehicle varies. As the lag time varies so does the accuracy of speed measurement. Vehicle size, vehicle speed, detector type, detector sensitivity...

  6. Qualifying geospatial workflow models for adaptive controlled validity and accuracy

    E-Print Network [OSTI]

    Stock, Kristin

    Qualifying geospatial workflow models for adaptive controlled validity and accuracy Didier Leibovici, Gobe Hobona, Kristin Stock and Mike Jackson Centre for Geospatial Sciences, University.leibovici@nottingham.ac.uk Abstract--Sharing geospatial data and geoprocessing models within a system like GEOSS (Global Earth

  7. AIPS Memo 77 Summary of DDT Accuracy Results

    E-Print Network [OSTI]

    Groppi, Christopher

    1 AIPS Memo 77 Summary of DDT Accuracy Results Ernest Allen and Glen Langston 92 September 3 (VLAL). A DDT for VLBI software is needed, but has not yet been implemented. A new continuum calibration of these tests are described in turn below. The Small, Medium and Large DDT results are presented in Appendix A

  8. MULTIPASS STRATEGIES FOR IMPROVING ACCURACY IN A VOICE SEARCH APPLICATION

    E-Print Network [OSTI]

    Rose, Richard

    the performance of a prototype ser- vice allowing users to enter query terms to an online search engine by voice of search terms. Methods are investigated for identifying the most likely database entry associatedMULTIPASS STRATEGIES FOR IMPROVING ACCURACY IN A VOICE SEARCH APPLICATION 1,2 Tianhe Zhang, 2

  9. An accuracy study of mesh refinement on mapped grids

    E-Print Network [OSTI]

    Calhoun, Donna

    An accuracy study of mesh refinement on mapped grids D. Calhoun and R. J. LeVeque, October, 2003 on a highly skewed portion of a mapped grid. Smooth and shock-wave solutions to the Euler equations are used interface. Key words: gas dynamics, finite-volume, finite-difference, Cartesian grid, mapped grids

  10. MEASUREMENT SENSITIVITY AND ACCURACY VERIFICATION FOR AN ANTENNA MEASUREMENT SYSTEM

    E-Print Network [OSTI]

    Arakaki, Dean Y.

    MEASUREMENT SENSITIVITY AND ACCURACY VERIFICATION FOR AN ANTENNA MEASUREMENT SYSTEM Newlyn Hui Luis Obispo, CA 93407 ABSTRACT An antenna measurement system was developed to complement a new an RF link budget is calculated to evaluate the performance of the antenna measurement system. Keywords

  11. Use of Chemical Inventory Accuracy Measurements as Leading Indicators

    SciTech Connect (OSTI)

    Quigley, David; Freshwater, David; Alnajjar, Mikhail S.; Siegel, Dina; Kuntamukkula, Murty; Simmons, Fred

    2012-05-15T23:59:59.000Z

    Chemical safety and lifecycle management (CSLM) is a process that involves managing chemicals and chemical information from the moment someone begins to order a chemical and lasts through final disposition(1). Central to CSLM is tracking data associated with chemicals which, for the purposes of this paper, is termed the chemical inventory. Examples of data that could be tracked include chemical identity, location, quantity, date procured, container type, and physical state. The reason why so much data is tracked is that the chemical inventory supports many functions. These functions include emergency management, which depends upon the data to more effectively plan for, and respond to, chemical accidents; environmental management that uses inventory information to aid in the generation of various federally-mandated and other regulatory reports; and chemical management that uses the information to increase the efficiency and safety with which chemicals are stored and utilized. All of the benefits of having an inventory are predicated upon having an inventory that is reasonably accurate. Because of the importance of ensuring one's chemical inventory is accurate, many have become concerned about measuring inventory accuracy. But beyond providing a measure of confidence in information gleaned from the inventory, does the inventory accuracy measurement provide any additional function? The answer is 'Yes'. It provides valuable information that can be used as a leading indicator to gauge the health of a chemical management system. In this paper, we will discuss: (1) what properties make leading indicators effective, (2) how chemical inventories can be used as a leading indicator, (3) how chemical inventory accuracy can be measured, what levels of accuracies should realistically be expected in a healthy system, and (4) what a subpar inventory accuracy measurement portends.

  12. USE OF CHEMICAL INVENTORY ACCURACY MEASUREMENTS AS LEADING INDICATORS

    SciTech Connect (OSTI)

    Kuntamukkula, M.

    2011-02-10T23:59:59.000Z

    Chemical safety and lifecycle management (CSLM) is a process that involves managing chemicals and chemical information from the moment someone begins to order a chemical and lasts through final disposition(1). Central to CSLM is tracking data associated with chemicals which, for the purposes of this paper, is termed the chemical inventory. Examples of data that could be tracked include chemical identity, location, quantity, date procured, container type, and physical state. The reason why so much data is tracked is that the chemical inventory supports many functions. These functions include emergency management, which depends upon the data to more effectively plan for, and respond to, chemical accidents; environmental management that uses inventory information to aid in the generation of various federally-mandated and other regulatory reports; and chemical management that uses the information to increase the efficiency and safety with which chemicals are stored and utilized. All of the benefits of having an inventory are predicated upon having an inventory that is reasonably accurate. Because of the importance of ensuring one's chemical inventory is accurate, many have become concerned about measuring inventory accuracy. But beyond providing a measure of confidence in information gleaned from the inventory, does the inventory accuracy measurement provide any additional function? The answer is 'Yes'. It provides valuable information that can be used as a leading indicator to gauge the health of a chemical management system. In this paper, we will discuss: what properties make leading indicators effective, how chemical inventories can be used as a leading indicator, how chemical inventory accuracy can be measured, what levels of accuracies should realistically be expected in a healthy system, and what a subpar inventory accuracy measurement portends.

  13. SECTION J, APPENDIX A - SOW

    National Nuclear Security Administration (NNSA)

    and improve the industrial competitiveness and national security of the United States. Section J, Appendix A, Page 19 (Replaced Mod 002; Modified Mod 016; Replaced Mod...

  14. SECTION J, APPENDIX A - SOW

    National Nuclear Security Administration (NNSA)

    and improve the industrial competitiveness and national security of the United States. Section J, Appendix A, Page 17 Request for Proposal No. DE-SOL-0007749 CHAPTER...

  15. Section 3.3 Equivalence Relations1 Section 3.3 Equivalence RelationSection 3.3 Equivalence RelationSection 3.3 Equivalence RelationSection 3.3 Equivalence Relationssss

    E-Print Network [OSTI]

    Farlow, Jerry

    Section 3.3 Equivalence Relations1 Section 3.3 Equivalence RelationSection 3.3 Equivalence RelationSection 3.3 Equivalence RelationSection 3.3 Equivalence Relationssss Purpose of SectionPurpose of SectionPurpose of SectionPurpose of Section To introduce the concept of an equivalence relationequivalence

  16. Accuracy of Semiclassical Methods for Shape Invariant Potentials

    E-Print Network [OSTI]

    Marina Hruska; Wai-Yee Keung; Uday Sukhatme

    1996-11-18T23:59:59.000Z

    We study the accuracy of several alternative semiclassical methods by computing analytically the energy levels for many large classes of exactly solvable shape invariant potentials. For these potentials, the ground state energies computed via the WKB method typically deviate from the exact results by about 10%, a recently suggested modification using nonintegral Maslov indices is substantially better, and the supersymmetric WKB quantization method gives exact answers for all energy levels.

  17. Idea: Electronic Writing in L2: Accuracy Vs Other Outcomes

    E-Print Network [OSTI]

    Pé rez-Sotelo, Luisa; Gonzalez-Bueno, Manuela

    2003-12-01T23:59:59.000Z

    M e s s IDEA: Electronic Writing in L2: Accuracy vs Other Outcomes Luisa Perez-Sotelo Emporia State University and Manuela Gonz&lez-Bueno University of Kansas Abstract: This article describes the effects of dialogue journaling through e-mail... administered to both groups requested their opinions on the effectiveness and attitude towards the journaling technique. The authors concluded that, although the e-mail medium promoted a more positive attitude towards the language, dialogue journals via e-mail...

  18. Rater individual differences and accuracy in performance appraisal

    E-Print Network [OSTI]

    Miller, Michael John

    1996-01-01T23:59:59.000Z

    given to each job dimension across all ratees. Murphy, Garcia, Kerkar, and Balzer (1982) reviewed the relevance of the four accuracy components for performance appraisal in organizational settings. They concluded that E, which they stated represents... rather than changing the rating scale (Athey & McIntyre, 1987; Bernardin & Walter, 1977; Borman, 1979a; Fay & Latham, 1982; McIntyre, Smith, & Hassett, 1984; Pulakos, 1984, 1986), and, as such, has been the most popular route to improve performance...

  19. Accurate Development of Thermal Neutron Scattering Cross Section Libraries

    SciTech Connect (OSTI)

    Hawari, Ayman; Dunn, Michael

    2014-06-10T23:59:59.000Z

    The objective of this project is to develop a holistic (fundamental and accurate) approach for generating thermal neutron scattering cross section libraries for a collection of important enutron moderators and reflectors. The primary components of this approach are the physcial accuracy and completeness of the generated data libraries. Consequently, for the first time, thermal neutron scattering cross section data libraries will be generated that are based on accurate theoretical models, that are carefully benchmarked against experimental and computational data, and that contain complete covariance information that can be used in propagating the data uncertainties through the various components of the nuclear design and execution process. To achieve this objective, computational and experimental investigations will be performed on a carefully selected subset of materials that play a key role in all stages of the nuclear fuel cycle.

  20. Higgs boson decay into four leptons at NLOPS electroweak accuracy

    E-Print Network [OSTI]

    Boselli, Stefano; Montagna, Guido; Nicrosini, Oreste; Piccinini, Fulvio

    2015-01-01T23:59:59.000Z

    In view of precision studies of the Higgs sector at the Run II of the LHC, the improvement of the accuracy of the theoretical prediction is becoming a pressing issue. In this framework, we detail a calculation of the full Next-to-Leading Order (NLO) electroweak corrections to Higgs boson decay into four charged leptons, by considering the gold-plated channel H -> Z(*) Z(*) -> 2l 2l', l,l' = e, mu. We match the NLO corrections with a QED Parton Shower (PS), in order to simulate exclusive multiple photon emission and provide novel results at NLOPS electroweak accuracy. We compare our NLO predictions to those of the program Prophecy4f and present NLOPS phenomenological results relevant for Higgs physics studies, with particular attention to precision measurements of the Higgs boson mass, spin-parity assignment and tests of the Standard Model. Our calculation is implemented in a new code, Hto4l, which can be easily interfaced to any generator describing Higgs boson production. As an example, we provide illustrati...

  1. Gravitational perturbations of the Kerr geometry: High-accuracy study

    E-Print Network [OSTI]

    Gregory B. Cook; Maxim Zalutskiy

    2014-11-19T23:59:59.000Z

    We present results from a new code for computing gravitational perturbations of the Kerr geometry. This new code carefully maintains high precision to allow us to obtain high-accuracy solutions for the gravitational quasinormal modes of the Kerr space-time. Part of this new code is an implementation of a spectral method for solving the angular Teukolsky equation that, to our knowledge, has not been used before for determining quasinormal modes. We focus our attention on two main areas. First, we explore the behavior of these quasinormal modes in the extreme limit of Kerr, where the frequency of certain modes approaches accumulation points on the real axis. We compare our results with recent analytic predictions of the behavior of these modes near the accumulation points and find good agreement. Second, we explore the behavior of solutions of modes that approach the special frequency $M\\omega=-2i$ in the Schwarzschild limit. Our high-accuracy methods allow us to more closely approach the Schwarzschild limit than was possible with previous numerical studies. Unlike previous work, we find excellent agreement with analytic predictions of the behavior near this special frequency. We include a detailed description of our methods, and make use of the theory of confluent Heun differential equations throughout. In particular, we make use of confluent Heun polynomials to help shed some light on the controversy of the existence, or not, of quasinormal and total-transmission modes at certain special frequencies in the Schwarzschild limit.

  2. Accuracy and resolution of shuttle radar topography mission data Bridget Smith and David Sandwell

    E-Print Network [OSTI]

    Sandwell, David T.

    Accuracy and resolution of shuttle radar topography mission data Bridget Smith and David Sandwell: General or miscellaneous. Citation: Smith, B., and D. Sandwell, Accuracy and resolution of shuttle radar

  3. 1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. HIGH-ACCURACY LASER POWER AND ENERGY METER CALIBRATION SYSTEM . . . . . . . . 2

    E-Print Network [OSTI]

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. HIGH-ACCURACY LASER POWER AND ENERGY METER CALIBRATION SYSTEM . . . . . . . . 2 2.1 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.1 High-Accuracy Calibration System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3.2.1 Basic cryogenic radiometer operating principal

  4. High Mass Accuracy and High Mass Resolving Power FT-ICR Secondary...

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

    High Mass Accuracy and High Mass Resolving Power FT-ICR Secondary Ion Mass Spectrometry for Biological Tissue Imaging. High Mass Accuracy and High Mass Resolving Power FT-ICR...

  5. Codon-by-Codon Modulation of Translational Speed and Accuracy Via mRNA Folding

    E-Print Network [OSTI]

    Zhang, Jianzhi

    stem cells that the efficiency­accuracy conflict is alleviated by slowing down the elongation of natural selection in mitigating efficiency­accuracy conflicts, which are prevalent in biology. Citation

  6. Design and testing of a high accuracy robotic single-cell manipulator

    E-Print Network [OSTI]

    Yoon, Jun Young, S.M. Massachusetts Institute of Technology

    2011-01-01T23:59:59.000Z

    We have designed, built and tested a high accuracy robotic single-cell manipulator to be able to pick individual cells from array of microwells, each 30 Pm or 50 pm cubed. Design efforts have been made for higher accuracy, ...

  7. Section H: Special Contract Requirements

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary of Energy Advisory Board FollowSection 3161 SECTION

  8. An Informatic Rationale for the Speed-Accuracy Trade-Off

    E-Print Network [OSTI]

    MacKenzie, Scott

    An Informatic Rationale for the Speed-Accuracy Trade-Off R. W. Soukoreff and I. S. Mac argues that the speed-accuracy trade-off arises as a consequence of Shannon's Fundamental Theorem processors, and that motivation is a necessary condition of the speed-accuracy trade- off. Keywords

  9. LHC Beam Loss Measurements and Quench Level Abort Threshold Accuracy

    E-Print Network [OSTI]

    Dehning, B; Sapinski, M

    2010-01-01T23:59:59.000Z

    The LHC beam loss measurement system is designed to trigger the beam abort in case the magnet coil transition level from the superconducting to normal conducting sate is approached. The predicted heat deposition in the superconducting coils of the magnets has been determined by particle shower simulation codes, while for transient losses the enthalpy has been calculated. The results have been combined to determine the abort thresholds. Transient loss measurements of the energy depositions of lost protons with injected beams in the LHC are used to determine the accuracy of the beam abort threshold settings. The simulation predictions are reviewed and compared with the measurement results. The relative difference between measurements and simulation are between 30 to 50 %.

  10. Machine tool accuracy characterization workshops. Final report, May 5, 1992--November 5 1993

    SciTech Connect (OSTI)

    NONE

    1995-01-06T23:59:59.000Z

    The ability to assess the accuracy of machine tools is required by both tool builders and users. Builders must have this ability in order to predict the accuracy capability of a machine tool for different part geometry`s, to provide verifiable accuracy information for sales purposes, and to locate error sources for maintenance, troubleshooting, and design enhancement. Users require the same ability in order to make intelligent choices in selecting or procuring machine tools, to predict component manufacturing accuracy, and to perform maintenance and troubleshooting. In both instances, the ability to fully evaluate the accuracy capabilities of a machine tool and the source of its limitations is essential for using the tool to its maximum accuracy and productivity potential. This project was designed to transfer expertise in modern machine tool accuracy testing methods from LLNL to US industry, and to educate users on the use and application of emerging standards for machine tool performance testing.

  11. High energy neutrino cross sections

    E-Print Network [OSTI]

    M. H. Reno

    2004-10-07T23:59:59.000Z

    The theoretical status of the neutrino-nucleon cross section is reviewed for incident neutrino energies up to E_nu=10^12 GeV, including different approaches to high energy extrapolations. Nonstandard model physics may play a role at ultrahigh energies. The cases of mini-black hole production and electroweak instanton contributions are discussed as examples in the context of ultrahigh energy neutrino scattering.

  12. West Virginia University 1 In this section

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    West Virginia University 1 Admissions In this section: Application: · General Information · Robert

  13. Reactor Measurement of theta_12; Principles, Accuracies and Physics Potentials

    E-Print Network [OSTI]

    H. Minakata; H. Nunokawa; W. J. C. Teves; R. Zukanovich Funchal

    2005-01-07T23:59:59.000Z

    We discuss reactor measurement of \\theta_{12} which has a potential of reaching the ultimate sensitivity which surpasses all the methods so far proposed. The key is to place a detector at an appropriate baseline distance from the reactor neutrino source to have an oscillation maximum at around a peak energy of the event spectrum in the absence of oscillation. By a detailed statistical analysis the optimal distance is estimated to be \\simeq (50-70) km x [8 x 10^{-5} eV^2/\\Delta m^2_{21}], which is determined by maximizing the oscillation effect in the event number distribution and minimizing geo-neutrino background contamination. To estimate possible uncertainty caused by surrounding nuclear reactors in distance of \\sim 100 km, we examine a concrete example of a detector located at Mt. Komagatake, 54 km away from the Kashiwazaki-Kariwa nuclear power plant in Japan, the most powerful reactor complex in the world. The effect turns out to be small. Under a reasonable assumption of systematic error of 4% in the experiment, we find that sin^2{\\theta_{12}} can be determined to the accuracy of \\simeq 2% (\\simeq 3%), at 68.27% CL for 1 degree of freedom, for 60 GW_th kton yr (20 GW_th kton yr) operation. We also discuss implications of such an accurate measurement of \\theta_{12}.

  14. Testing the Accuracy of Redshift Space Group Finding Algorithms

    E-Print Network [OSTI]

    James J. Frederic

    1994-09-07T23:59:59.000Z

    Using simulated redshift surveys generated from a high resolution N-body cosmological structure simulation, we study algorithms used to identify groups of galaxies in redshift space. Two algorithms are investigated; both are friends-of-friends schemes with variable linking lengths in the radial and transverse dimensions. The chief difference between the algorithms is in the redshift linking length. The algorithm proposed by Huchra \\& Geller (1982) uses a generous linking length designed to find ``fingers of god'' while that of Nolthenius \\& White (1987) uses a smaller linking length to minimize contamination by projection. We find that neither of the algorithms studied is intrinsically superior to the other; rather, the ideal algorithm as well as the ideal algorithm parameters depend on the purpose for which groups are to be studied. The Huchra/Geller algorithm misses few real groups, at the cost of including some spurious groups and members, while the Nolthenius/White algorithm misses high velocity dispersion groups and members but is less likely to include interlopers in its group assignments. In a companion paper we investigate the accuracy of virial mass estimates and clustering properties of groups identified using these algorithms.

  15. QED radiative effects in the processes of exclusive photon electroproduction from polarized protons with the next-to-leading accuracy

    SciTech Connect (OSTI)

    Akushevich, Igor V. [Duke University, JLAB; Ilyichev, Alexander [Byelorussian State University; Shumeiko, Nikolai M [Byelorussian State University

    2014-08-01T23:59:59.000Z

    Radiative effects in the electroproduction of photons in polarized ep-scattering are calculated with the next-to-leading (NLO) accuracy. The contributions of loops and two photon emission were presented in analytical form. The covariant approach of Bardin and Shumeiko was used to extract the infrared divergence. All contributions to the radiative correction were presented in the form of the correction to the leptonic tensor thus allowing for further applications in other experiments, e.g., deep inelastic scattering. The radiative corrections (RC) to the cross sections and polarization asymmetries were analyzed numerically for kinematical conditions of the current measurement at Jefferson Lab. Specific attention was paid on analyzing kinematical conditions for the process with large radiative effect when momenta of two photons in the final state are collinear to momenta of initial and final electrons, respectively.

  16. SECTION J, APPENDIX B - PEP

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved:AdministrationAnalysis andBHoneywell9/%2ARequest forMod 002; SECTION

  17. Analysis Of Microseismic Location Accuracy For Hydraulic Fracturing At The DWTI Site, Jasper, Texas

    E-Print Network [OSTI]

    Rieven, Shirley

    1995-01-01T23:59:59.000Z

    This report presents the results of a feasibility study designed to assess whether microseismic location techniques can provide enough accuracy and precision to enable a

  18. Comparing Price Forecast Accuracy of Natural Gas Models and Futures Markets

    E-Print Network [OSTI]

    Wong-Parodi, Gabrielle; Dale, Larry; Lekov, Alex

    2005-01-01T23:59:59.000Z

    to accurately forecast natural gas prices. Many policyseek alternative methods to forecast natural gas prices. Thethe accuracy of forecasts for natural gas prices as reported

  19. Assessing and Improving the Accuracy of Energy Analysis for Residential Buildings

    SciTech Connect (OSTI)

    Polly, B.; Kruis, N.; Roberts, D.

    2011-07-01T23:59:59.000Z

    This report describes the National Renewable Energy Laboratory's (NREL) methodology to assess and improve the accuracy of whole-building energy analysis for residential buildings.

  20. Improving pairwise sequence alignment accuracy using near-optimal protein sequence alignments

    E-Print Network [OSTI]

    Sierk, Michael L; Smoot, Michael E; Bass, Ellen J; Pearson, William R

    2010-01-01T23:59:59.000Z

    al. : Improving pairwise sequence alignment accuracy usingnear-optimal protein sequence alignments. BMC Bioinformaticsshown are the number of sequence pairs, out of 22 in each

  1. Research on Fast-Doppler-Broadening of neutron cross sections

    SciTech Connect (OSTI)

    Li, S.; Wang, K.; Yu, G. [Dept. of Engineering Physics, Tsinghua Univ., Beijing, 100084 (China)

    2012-07-01T23:59:59.000Z

    A Fast-Doppler-Broadening method is developed in this work to broaden Continuous Energy neutron cross-sections for Monte Carlo calculations. Gauss integration algorithm and parallel computing are implemented in this method, which is unprecedented in the history of cross section processing. Compared to the traditional code (NJOY, SIGMA1, etc.), the new Fast-Doppler-Broadening method shows a remarkable speedup with keeping accuracy. The purpose of using Gauss integration is to avoid complex derivation of traditional broadening formula and heavy load of computing complementary error function that slows down the Doppler broadening process. The OpenMP environment is utilized in parallel computing which can take full advantage of modern multi-processor computers. Combination of the two can reduce processing time of main actinides (such as {sup 238}U, {sup 235}U) to an order of magnitude of 1{approx}2 seconds. This new method is fast enough to be applied to Online Doppler broadening. It can be combined or coupled with Monte Carlo transport code to solve temperature dependent problems and neutronics-thermal hydraulics coupled scheme which is a big challenge for the conventional NJOY-MCNP system. Examples are shown to determine the efficiency and relative errors compared with the NJOY results. A Godiva Benchmark is also used in order to test the ACE libraries produced by the new method. (authors)

  2. Absorption cross section in Lifshitz black hole

    E-Print Network [OSTI]

    Taeyoon Moon; Yun Soo Myung

    2012-10-05T23:59:59.000Z

    We derive the absorption cross section of a minimally coupled scalar in the Lifshitz black hole obtained from the new massive gravity. The absorption cross section reduces to the horizon area in the low energy and massless limit of s-wave mode propagation, indicating that the Lifshitz black hole also satisfies the universality of low energy absorption cross section for black holes.

  3. SpeedAccuracy Trade-Off in Skilled Typewriting: Decomposing the Contributions of Hierarchical Control Loops

    E-Print Network [OSTI]

    Logan, Gordon D.

    Speed­Accuracy Trade-Off in Skilled Typewriting: Decomposing the Contributions of Hierarchical were able to trade speed for accuracy but were unable to type at rates faster than 100 ms and errors indicated that the majority of the trade-offs were due to inner-loop processing. The contribution

  4. Improving the Accuracy of Software-Based Energy Analysis for Residential Buildings (Presentation)

    SciTech Connect (OSTI)

    Polly, B.

    2011-09-01T23:59:59.000Z

    This presentation describes the basic components of software-based energy analysis for residential buildings, explores the concepts of 'error' and 'accuracy' when analysis predictions are compared to measured data, and explains how NREL is working to continuously improve the accuracy of energy analysis methods.

  5. Simplified High-Accuracy Calculation of Eddy-Current Losses in Round-Wire Windings

    E-Print Network [OSTI]

    Simplified High-Accuracy Calculation of Eddy-Current Losses in Round-Wire Windings Xi Nan C. R the IEEE. #12;Simplified High-Accuracy Calculation of Eddy-Current Loss in Round-Wire Windings Xi Nan-- It has recently been shown that the most commonly used methods for calculating high-frequency eddy-current

  6. SNL RML recommended dosimetry cross section compendium

    SciTech Connect (OSTI)

    Griffin, P.J.; Kelly, J.G.; Luera, T.F. [Sandia National Labs., Albuquerque, NM (United States)] [Sandia National Labs., Albuquerque, NM (United States); VanDenburg, J. [Science and Engineering Associates, Inc., Albuquerque, NM (United States)] [Science and Engineering Associates, Inc., Albuquerque, NM (United States)

    1993-11-01T23:59:59.000Z

    A compendium of dosimetry cross sections is presented for use in the characterization of fission reactor spectrum and fluence. The contents of this cross section library are based upon the ENDF/B-VI and IRDF-90 cross section libraries and are recommended as a replacement for the DOSCROS84 multigroup library that is widely used by the dosimetry community. Documentation is provided on the rationale for the choice of the cross sections selected for inclusion in this library and on the uncertainty and variation in cross sections presented by state-of-the-art evaluations.

  7. Energy Aware Node Selection for Cluster-based Data Accuracy Estimation in Wireless Sensor Networks

    E-Print Network [OSTI]

    Karjee, Jyotirmoy

    2011-01-01T23:59:59.000Z

    The main objective of this paper is to reduce the number of sensor nodes by estimating a trade off between data accuracy and energy consumption for selecting nodes in probabilistic approach in distributed networks. Design Procedure/Approach: Observed data are highly correlated among sensor nodes in the spatial domain due to deployment of high density of sensor nodes. These sensor nodes form non-overlapping distributed clusters due to high data correlation among them. We develop a probabilistic model for each distributed cluster to perform data accuracy and energy consumption model in the network. Finally we find a trade off between data accuracy and energy consumption model to select an optimal number of sensor nodes in each distributed cluster. We also compare the performance for our data accuracy estimation model with information accuracy model for each distributed cluster in the network. Practical Implementation: Measuring temperature in physical environment and measuring moisture content in agricultural f...

  8. Expandable mixing section gravel and cobble eductor

    DOE Patents [OSTI]

    Miller, Arthur L. (Kenyon, MN); Krawza, Kenneth I. (Lakeville, MN)

    1997-01-01T23:59:59.000Z

    In a hydraulically powered pump for excavating and transporting slurries in hich it is immersed, the improvement of a gravel and cobble eductor including an expandable mixing section, comprising: a primary flow conduit that terminates in a nozzle that creates a water jet internal to a tubular mixing section of the pump when water pressure is applied from a primary supply flow; a tubular mixing section having a center line in alignment with the nozzle that creates a water jet; a mixing section/exit diffuser column that envelopes the flexible liner; and a secondary inlet conduit that forms an opening at a bas portion of the column and adjacent to the nozzle and water jet to receive water saturated gravel as a secondary flow that mixes with the primary flow inside of the mixing section to form a combined total flow that exits the mixing section and decelerates in the exit diffuser.

  9. Software Patent Litigation ABA Section of Litigation

    E-Print Network [OSTI]

    Shamos, Michael I.

    1 Software Patent Litigation ABA Section of Litigation Intellectual Property Litigation Committee............................................................ 2 II. Infringement issues specific to software patents Relating to Software Patents.........................................................15 POSSIBLE ISSUES

  10. {sup 16}O neutron cross section evaluation

    SciTech Connect (OSTI)

    Caro, E. [Lockheed Martin Corp., Schenectady, NY (United States)

    1998-06-01T23:59:59.000Z

    This work has resulted from a need to compute more accurately the neutron scattering cross sections and angular distributions for {sup 16}O. Several oxygen evaluations have been performed in the past with R-Matrix theory, including ENDF/B-V and ENDF/B-VI. ENDF/B-VI is an improvement over ENDF/B-V, but still underpredicts in general the forward scattering of neutrons below 2.5 MeV. R-Matrix theory is used in describing cross sections at and near the resonance energies; but may not always be adequate in describing cross sections between resonances, especially when they are widely spaced. The optical (potential well) model of the nucleus is very good in representing cross sections that vary smoothly with energy, but not at describing all of the detailed resonance cross sections. A combination of the potential well model and R-Matrix theory was used for this work to represent cross sections with isolated resonances with large spacings between them. The total neutron cross section of oxygen-16 below 3.0 MeV has widely separated resonances and a dip in the cross section at 2.35 MeV. In the vicinity of resonances, where cross sections vary rapidly with energy, R-Matrix theory has been successful in fitting experimental data. In the region between resonances, an analytical procedure with physical basis is needed that agrees with data over a wide range of energies bracketing regions where experimental measurements are lacking.

  11. Cross section of the /sup 58/Ni (n, p) reaction for neutron energies of 7-10 MeV

    SciTech Connect (OSTI)

    Kornilov, N.V.; Balitskii, A.V.; Baryba, V.Y.; Daroci, S.; Papp, Z.; Raics, P.; Rudenko, A.N.

    1985-08-01T23:59:59.000Z

    The authors first present experimental data on the cross section of the /sup 58/Ni (n, p) reaction obtained by various authors. Data is presented to convincingly support the estimates of ENDF/B IV and BOSPOR. On the basis of the foregoing, the authors conclude that despite the appearance of new experimental data, in the 7-10 MeV neutron-energy rante, they have not yet attained the required accuracy in measuring the cross section of the /sup 58/Ni (n, p) reaction. Solving this problem, they say, will require new experiments carried out with an error of less than 5% and high energy resolution.

  12. NDAA Section 3116 Waste Determinations with Related Disposal...

    Office of Environmental Management (EM)

    NDAA Section 3116 Waste Determinations with Related Disposal Performance Assessments NDAA Section 3116 Waste Determinations with Related Disposal Performance Assessments Section...

  13. Analyzing Volunteer Geographic Information Accuracy and Determining its Capabilities for Scientific Research Data

    E-Print Network [OSTI]

    Schwind, Michael Anthony

    2014-02-28T23:59:59.000Z

    The primary purpose of this research project is to develop, test, and evaluate a volunteered geographic information (VGI) based approach for collecting data in order to assess its accuracy and relativity to a field of scientific research. As such...

  14. Analyzing Volunteer Geographic Information Accuracy and Determining its Capabilities for Scientific Research Data

    E-Print Network [OSTI]

    Baldridge, Payton Lloyd

    2014-04-14T23:59:59.000Z

    . Daniel Goldberg Department of Geography The primary purpose of this research project is to develop, test, and evaluate a volunteered geographic information (VGI) based approach for collecting data in order to assess its accuracy and relativity to a...

  15. Analyzing Volunteer Geographic Information Accuracy and Determining its Capabilities for Scientific Research Data

    E-Print Network [OSTI]

    Davis, Kelsi Lyn

    2014-04-14T23:59:59.000Z

    The primary purpose of this research project is to develop, test, and evaluate a volunteered geographic information (VGI) based approach for collecting data in order to assess its accuracy and relativity to a field of scientific research. As such...

  16. An Experimental Evaluation of Duct-Mounted Relative Humidity Sensors: Part 2 – Accuracy Results 

    E-Print Network [OSTI]

    Joshi, S.N.; Pate, M.B.; Nelson, R.M; House, J.H.; Klaasen, C.J.

    2005-01-01T23:59:59.000Z

    Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. An Experimental Evaluation of Duct-Mounted Relative Humidity Sensors: Part 2-Accuracy Results Joshi, Shailesh N;House, John M;Pate, Michael B...

  17. Evaluation of a theoretical model of perceptual accuracy and self-management behavior in pediatric diabetes

    E-Print Network [OSTI]

    Lane, Mariella Marie

    2005-11-01T23:59:59.000Z

    This study evaluated a model of perceptual accuracy and self-management behavior in pediatric diabetes. Participants were 169 children and adolescents (10-18 years) attending diabetes summer camps. Error grid analysis quantified global perceptual...

  18. Current drive by Alfv{acute e}n waves in elongated cross-section tokamak

    SciTech Connect (OSTI)

    Tsypin, V.S. [Institute of Physics, State University of Rio de Janeiro, 20550-013, Maracana, Rio de Janeiro, Rio de Janeiro (Brazil)] [Institute of Physics, State University of Rio de Janeiro, 20550-013, Maracana, Rio de Janeiro, Rio de Janeiro (Brazil); Elfimov, A.G. [Physics Institute, University of Sao Paulo, Cx. Postal 20516 Sao Paulo, Sao Paulo (Brazil)] [Physics Institute, University of Sao Paulo, Cx. Postal 20516 Sao Paulo, Sao Paulo (Brazil); Nekrasov, F.M.; de Azevedo, C.A. [Institute of Physics, State University of Rio de Janeiro, 20550-013, Maracana, Rio de Janeiro, Rio de Janeiro (Brazil)] [Institute of Physics, State University of Rio de Janeiro, 20550-013, Maracana, Rio de Janeiro, Rio de Janeiro (Brazil); de Assis, A.S. [Institute of Mathematics-Group of Applied Mathematics, Fluminense Federal University, Niteroi, Rio de Janeiro (Brazil)] [Institute of Mathematics-Group of Applied Mathematics, Fluminense Federal University, Niteroi, Rio de Janeiro (Brazil)

    1997-10-01T23:59:59.000Z

    The general approach to the Alfv{acute e}n wave current drive problem in tokamaks with elongated transverse cross-sections was considered in this paper. Model approximations are used to describe circulating and trapped particle dynamics. This approach gives the accuracy of some percents. The expressions for the time-averaged longitudinal current and the radio-frequency currents have been obtained. They are supposed to be useful for a further analytical and computational solution of this problem. As an example, kinetic Alfv{acute e}n waves are considered in this paper. {copyright} {ital 1997 American Institute of Physics.}

  19. Precision nuclear targets for Drell-Yan cross section measurements at 800 GeV

    SciTech Connect (OSTI)

    Gursky, J.C.; Baer, H.; Flick, F.F.; Gallegos, D.

    1988-01-01T23:59:59.000Z

    Targets of iron, tungsten, carbon, and calcium of areal densities 2.3 to 5.8 g/cm/sup 2/ were fabricated to high precision for a fixed-target experiment performed in 1988 at Fermilab to measure relative Drell-Yan cross sections. The experiment used 800-GeV protons at an intensity of 2 x 10/sup 12/ protons per 23-second spill. Areal densities were determined to an accuracy of approximately 1 part in 10/sup 4/. The calcium targets were vacuum-encapsulated in stainless steel by electron-beam welding. 1 ref., 5 figs., 4 tabs.

  20. Methods and procedures for evaluation of neutron-induced activation cross sections

    SciTech Connect (OSTI)

    Gardner, M.A.

    1981-09-01T23:59:59.000Z

    One cannot expect measurements alone to supply all of the neutron-induced activation cross-section data required by the fission reactor, fusion reactor, and nuclear weapons development communities, given the wide ranges of incident neutron energies, the great variety of possible reaction types leading to activation, and targets both stable and unstable. Therefore, the evaluator must look to nuclear model calculations and systematics to aid in fulfilling these cross-section data needs. This review presents some of the recent developments and improvements in the prediction of neutron activation cross sections, with specific emphasis on the use of empirical and semiempirical methods. Since such systematics require much less nuclear informaion as input and much less computational time than do the multistep Hauser-Feshbach codes, they can often provide certain cross-section data at a sufficient level of accuracy within a minimum amount of time. The cross-section information that these systematics can and cannot provide and those cases in which they can be used most reliably are discussed.

  1. Section 4. Inventory Table of Contents

    E-Print Network [OSTI]

    Section 4. Inventory Table of Contents 4.1 Existing Legal Protections........................................................................................................... 14 #12;Draft Umatilla/Willow Subbasin Plan May 28, 2004 4. Inventory of Existing Activities The following section contains information derived from an inventory questionnaire that was sent

  2. FAR SIDE ONLY SECTION A-A

    E-Print Network [OSTI]

    McDonald, Kirk

    NOTES 1. WELDING SHALL BE PERFORMED IN ACCORDANCE WITH ASME SECTION IX. NO CODE STAMP REQUIRED. 2. ALL is property of 1. ALL DIMENSIONS ARE IN INCHES 2. INTERPRET DIMENSIONS AND TOLERANCES PER ASME Y14.5M 3 REQUIRED. NO RADIOGRAPHY REQUIRED. 2. ALL WELDS SHALL BE DYE PENETRANT INSPECTED. WITH ASME SECTION IX

  3. EOC Title: Logistics Section Chief General Description The Logistics Section Chief is responsible for providing facilities, services, and

    E-Print Network [OSTI]

    Walker, Matthew P.

    LOGISTICS EOC Title: Logistics Section Chief General Description The Logistics Section Chief EOC operating requirements. Key Role & Responsibilities · Ensure the logistics function is carried out Staff for Complex Incidents Training for Section Chiefs · Logistics Section Chief Training #12;

  4. electronic reprint Acta Crystallographica Section B

    E-Print Network [OSTI]

    Brock, Carolyn P.

    electronic reprint Acta Crystallographica Section B Structural Science, Crystal Engineering page is retained. Republication of this article or its storage in electronic databases other than Science, Crystal Engineering and Materials Editors: Alexander J. Blake and Marc de Boissieu journals

  5. West Virginia University 1 In this section

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    West Virginia University 1 Minors In this section: · General Statement · Rationale · Requirements to assure that completion of a minor is appropriately recognized and posted to the student's transcript: 1

  6. Asymptotic cross sections for composite projectile reactions

    E-Print Network [OSTI]

    Neves, Andrea Marolt Pimenta

    1995-01-01T23:59:59.000Z

    , the sum of elastic, excited, and ionized states. 42 Figure 8: Our First Born calculations are plotted against the RHF and FBBP results for a lithium ion projectile 43 Figure 9: We have plotted the ratio of our First Born cross sections with the FBBP... sections to those calculated through analytic methods for a helium ion projectile. Page Figure 12: A comparison of the ratio of our First Born Approximation to those calculated through analytic methods for a lithium ion projectile...

  7. Modified Empirical Parametrization of Fragmentation Cross Sections

    E-Print Network [OSTI]

    K. Sümmerer; B. Blank

    1999-11-17T23:59:59.000Z

    New experimental data obtained mainly at the GSI/FRS facility allow to modify the empirical parametrization of fragmentation cross sections, EPAX. It will be shown that minor modifications of the parameters lead to a much better reproduction of measured cross sections. The most significant changes refer to the description of fragmentation yields close to the projectile and of the memory effect of neutron-deficient projectiles.

  8. Absorption cross section of RN black hole

    E-Print Network [OSTI]

    Sini R.; V. C. Kuriakose

    2007-08-23T23:59:59.000Z

    The behavior of a charged scalar field in the RN black hole space time is studied using WKB approximation. In the present work it is assumed that matter waves can get reflected from the event horizon. Using this effect, the Hawking temperature and the absorption cross section for RN black hole placed in a charged scalar field are calculated. The absorption cross section $\\sigma _{abs}$ is found to be inversely proportional to square of the Hawking temperature of the black hole.

  9. Accuracy Based Generation of Thermodynamic Properties for Light Water in RELAP5-3D

    SciTech Connect (OSTI)

    Cliff B. Davis

    2010-09-01T23:59:59.000Z

    RELAP5-3D interpolates to obtain thermodynamic properties for use in its internal calculations. The accuracy of the interpolation was determined for the original steam tables currently used by the code. This accuracy evaluation showed that the original steam tables are generally detailed enough to allow reasonably accurate interpolations in most areas needed for typical analyses of nuclear reactors cooled by light water. However, there were some regions in which the original steam tables were judged to not provide acceptable accurate results. Revised steam tables were created that used a finer thermodynamic mesh between 4 and 21 MPa and 530 and 640 K. The revised steam tables solved most of the problems observed with the original steam tables. The accuracies of the original and revised steam tables were compared throughout the thermodynamic grid.

  10. Sensitivity and Accuracy of the Systems for the Magnetic Measurements of the LHC Magnets at CERN

    E-Print Network [OSTI]

    Bottura, L; Schnizer, P; Smirnov, N; Walckiers, L

    2000-01-01T23:59:59.000Z

    Beam optics of the LHC accelerator require stringent control of the field quality of the main dipole and quadrupole magnets. The field quality measurements need challenging accuracy given the small size of the aperture (50 mm) : relative strength of the magnets within 2×10-4, harmonics in the ppm range, axis determination within 0.1 mm, main field direction within 0.2 mrad. We present a detailed analysis of the accuracy and reproducibility obtained with the equipment presently available for the qualification tests of the first series magnets.

  11. Assessment of Fission Product Cross-Section Data for Burnup Credit Applications

    SciTech Connect (OSTI)

    Leal, Luiz C [ORNL; Derrien, Herve [ORNL; Dunn, Michael E [ORNL; Mueller, Don [ORNL

    2007-12-01T23:59:59.000Z

    Past efforts by the Department of Energy (DOE), the Electric Power Research Institute (EPRI), the Nuclear Regulatory Commission (NRC), and others have provided sufficient technical information to enable the NRC to issue regulatory guidance for implementation of pressurized-water reactor (PWR) burnup credit; however, consideration of only the reactivity change due to the major actinides is recommended in the guidance. Moreover, DOE, NRC, and EPRI have noted the need for additional scientific and technical data to justify expanding PWR burnup credit to include fission product (FP) nuclides and enable burnup credit implementation for boiling-water reactor (BWR) spent nuclear fuel (SNF). The criticality safety assessment needed for burnup credit applications will utilize computational analyses of packages containing SNF with FP nuclides. Over the years, significant efforts have been devoted to the nuclear data evaluation of major isotopes pertinent to reactor applications (i.e., uranium, plutonium, etc.); however, efforts to evaluate FP cross-section data in the resonance region have been less thorough relative to actinide data. In particular, resonance region cross-section measurements with corresponding R-matrix resonance analyses have not been performed for FP nuclides. Therefore, the objective of this work is to assess the status and performance of existing FP cross-section and cross-section uncertainty data in the resonance region for use in burnup credit analyses. Recommendations for new cross-section measurements and/or evaluations are made based on the data assessment. The assessment focuses on seven primary FP isotopes (103Rh, 133Cs, 143Nd, 149Sm, 151Sm, 152Sm, and 155Gd) that impact reactivity analyses of transportation packages and two FP isotopes (153Eu and 155Eu) that impact prediction of 155Gd concentrations. Much of the assessment work was completed in 2005, and the assessment focused on the latest FP cross-section evaluations available in the international nuclear data community as of March 2005. The accuracy of the cross-section data was investigated by comparing existing cross-section evaluations against available measured cross-section data. When possible, benchmark calculations were also used to assess the performance of the latest FP cross-section data. Since March 2005, the U.S. and European data projects have released newer versions of their respective data files. Although there have been updates to the international data files and to some degree FP data, much of the updates have included nuclear cross-section modeling improvements at energies above the resonance region. The one exception is improved ENDF/B-VII cross-section uncertainty data or covariance data for gadolinium isotopes. In particular, ENDF/B-VII includes improved 155Gd resonance parameter covariance data, but they are based on previously measured resonance data. Although the new covariance data are available for 155Gd, the conclusions of the FP cross-section data assessment of this report still hold in lieu of the newer international cross-section data files. Based on the FP data assessment, there is judged to be a need for new total and capture cross-section measurements and corresponding cross-section evaluations, in a prioritized manner, for the nine FPs to provide the improved information and technical rigor needed for criticality safety analyses.

  12. Temperature Dependent Neutron Scattering Sections for Polyethylene

    E-Print Network [OSTI]

    Roger E. Hill; C. -Y. Liu

    2003-09-05T23:59:59.000Z

    This note presents neutron scattering cross sections for polyethylene at 296 K, 77 K and 4 K derived from a new scattering kernel for neutron scattering off of hydrogen in polyethylene. The kernel was developed in ENDF-6 format as a set of S(alpha,beta) tables using the LEAPR module of the NJOY94 code package. The polyethylene density of states (from 0 to sub eV) adopted to derive the new kernel is presented. We compare our calculated room temperature total scattering cross sections and double differential cross sections at 232 meV at various angles with the available experimental data (at room temperature), and then extrapolate the calculations to lower temperatures (77K and 4K). The new temperature dependent scattering kernel gives a good quantitative fit to the available room temperature data and has a temperature dependence that is qualitatively consistent with thermodynamics.

  13. Improving the Dynamic Accuracy of Elastic Industrial Robot Joint by Algebraic Identification Approach

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Improving the Dynamic Accuracy of Elastic Industrial Robot Joint by Algebraic Identification, robots are finding their way to realize continuous operations and especially machining applications like (DOF) industrial robot with revolute joints. The St¨aubli CS8 controller provides the actual joint

  14. Water Research 36 (2002) 11811192 Accuracy analysis of a respirometer for activated sludge

    E-Print Network [OSTI]

    2002-01-01T23:59:59.000Z

    Water Research 36 (2002) 1181­1192 Accuracy analysis of a respirometer for activated sludge dynamic transfer, pH, and the influence of sludge condition on ``start-up'' behaviour. It is shown to what extent Elsevier Science Ltd. All rights reserved. Keywords: Respirometry; Oxygen uptake rate; Activated sludge

  15. High Accuracy Numerical Methods for Thermally Perfect Gas Flows with Chemistry

    E-Print Network [OSTI]

    Soatto, Stefano

    High Accuracy Numerical Methods for Thermally Perfect Gas Flows with Chemistry Ronald P. Fedkiw with calculations of a 1-D reacting shock tube and a 2-D combustor. 2 #12; 1 Introduction Chemically reacting, high or the incineration of waste in a dump combustor. The combination of energetic chemical reactions and compressible gas

  16. NREL researchers discover ways to increase accuracy in building energy simulations tools to improve predictions of

    E-Print Network [OSTI]

    the wall cavities were not insulated during construction or where the insulating material has settled properties of building materials, insulation levels, and the temperature dependence of conduction throughNREL researchers discover ways to increase accuracy in building energy simulations tools to improve

  17. EXPLOITING GROUP STRUCTURE TO IMPROVE RETRIEVAL ACCURACY AND SPEED IN IMAGE DATABASES

    E-Print Network [OSTI]

    Vasconcelos, Nuno M.

    perform a linear search over the database to find the closest match to a query. However, databases usually precision and speed. We investigate methods that enable search at both the class and image levelEXPLOITING GROUP STRUCTURE TO IMPROVE RETRIEVAL ACCURACY AND SPEED IN IMAGE DATABASES Nuno

  18. Accuracy of Link Capacity Estimates using Passive and Active Approaches with CapProbe

    E-Print Network [OSTI]

    Chen, Ling-Jyh

    appropriate streaming rates, while ISPs would be able to determine the capacity of their installed linksAccuracy of Link Capacity Estimates using Passive and Active Approaches with CapProbe Rohit Kapoor to estimate capacity. CapProbe combines both dispersion and end-to-end delay to estimate the capacity

  19. Determinants of translation efficiency and accuracy Hila Gingold and Yitzhak Pilpel*

    E-Print Network [OSTI]

    Pilpel, Yitzhak

    on the process of translation. Here we review modern developments in genomics and systems biology that have). The advent of modern genomics and systems biology has revolutionized our understanding of the diversity of molecular and systems-level mechanisms that control and optimize transla- tion efficiency and accuracy

  20. PROPERTIES OF RELATIVELY-DILUTEPLASMAS IN PULSED-POWER SYSTEMS OBTAINED FROM HIGH-ACCURACY LASER

    E-Print Network [OSTI]

    Doron, Ramy

    Transmission Lines, Plasma Switches, Ion and Electron Diodes, and Plasma Sources. I.INTRODUCTION Atomic physicsPROPERTIES OF RELATIVELY-DILUTEPLASMAS IN PULSED-POWER SYSTEMS OBTAINED FROM HIGH-ACCURACY LASER application of laser-spectroscopy to investigate the electric fields and the properties of relatively dilute

  1. Impact of relief accuracy on flood simulations and road network vulnerability analysis

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    network by forcing users to take detours. In a risk preventive viewpoint, the network administrator has 1 Impact of relief accuracy on flood simulations and road network vulnerability analysis Jean in the water level and its consequences on the road network vulnerability. The first part focuses

  2. INSERTION-LOSS MEASUREMENT ACCURACY FOR FIBER-OPTIC COMPONENTS AN ANALYSIS

    E-Print Network [OSTI]

    Kansas, University of

    Ralph D. Taylor James R. Stone DIT-MCO International #12;INSERTION-LOSS MEASUREMENT ACCURACY FOR FIBER Road Lawrence, KS 66045 callen@eecs.ku.edu 785-864-3017 RALPH D. TAYLOR Director of Engineering DIT-MCO Program Manager DIT-MCO International 5612 Brighton Terrace Kansas City, MO 64130 jstone@ditmco.com 816

  3. HIGH ACCURACY BEAM CURRENT MONITOR SYSTEM FOR CEBAF'S EXPERIMENTAL HALL A *

    E-Print Network [OSTI]

    HIGH ACCURACY BEAM CURRENT MONITOR SYSTEM FOR CEBAF'S EXPERIMENTAL HALL A * J.-C. Denard , A. Saha CEBAF accelerator delivers continuous wave (CW) electron beams to three experimental Halls. In Hall A is described. 1 INTRODUCTION The CEBAF accelerator delivers continuous wave (CW) electron beams to three

  4. HIGH ACCURACY BEAM CURRENT MONITOR SYSTEM FOR CEBAF'S EXPERIMENTAL HALL A *

    E-Print Network [OSTI]

    Boyer, Edmond

    HIGH ACCURACY BEAM CURRENT MONITOR SYSTEM FOR CEBAF'S EXPERIMENTAL HALL A * J.-C. Denard , A. Saha, Université Blaise Pascal IN2P3-CNRS Abstract CEBAF accelerator delivers continuous wave (CW) electron beams for measuring accurately the linearity is described. 1 INTRODUCTION The CEBAF accelerator delivers continuous

  5. A Unified RANS-LES Model: Computational Development, Accuracy and Cost1 Harish Gopalana

    E-Print Network [OSTI]

    Heinz, Stefan

    -Stokes (RANS) methods, applies modeling assumptions to all the scales of motion. The17 use of LES methodsA Unified RANS-LES Model: Computational Development, Accuracy and Cost1 Harish Gopalana , Stefan Heinzb, , Michael K. Stöllingera 2 aMechanical Engineering Department, University of Wyoming, 1000 E

  6. The Accuracy of Radar Estimates of Ice Terminal Fall Speed from Vertically Pointing Doppler Radar Measurements

    E-Print Network [OSTI]

    Protat, Alain

    The Accuracy of Radar Estimates of Ice Terminal Fall Speed from Vertically Pointing Doppler Radar and 2835 MHz) are used to characterize the terminal fall speed of hydrometeors and the vertical air motion air velocity in ice clouds is small on average, as is assumed in terminal fall speed retrieval methods

  7. Phase Reduction Models for Improving the Accuracy of the Finite Element Solution of

    E-Print Network [OSTI]

    Boyer, Edmond

    , acoustic scattering, short-wave problem, finite element method, pollution, accuracy, On-Surface Radiation in view of a numerical finite element solution. It is well-known that pollution error causes inaccuracies the pollution error in the finite element solution of time-harmonic scattering problems. The pollution error

  8. Improving the Accuracy of Industrial Robots by offline Compensation of Joints Errors

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Improving the Accuracy of Industrial Robots by offline Compensation of Joints Errors Adel Olabi.damak@geomnia.eu Abstract--The use of industrial robots in many fields of industry like prototyping, pre-machining and end errors. Identification methods are presented with experimental validation on a 6 axes industrial robot

  9. Improving the assessment of ICESat water altimetry accuracy accounting for autocorrelation

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    in the inland water volume. Due to the lack of data and the heterogeneity of water level stations, remoteImproving the assessment of ICESat water altimetry accuracy accounting for autocorrelation Hani Montpellier, France Abstract 1 Given that water resources are scarce and are strained by competing de- mands

  10. ACCURACY OF ESTIMATION OF BREEDING VALUES FOR BULL DAMS by H. O. GRAVERT K. PABST

    E-Print Network [OSTI]

    Boyer, Edmond

    ACCURACY OF ESTIMATION OF BREEDING VALUES FOR BULL DAMS by H. O. GRAVERT K. PABST Institute for Milk Production, Fedeval Daivy Research Center, Kiel, F.R.G. For 1.229 dams of A.I. bulls with known IN A BULL DAM SELECTION INDEX A. FESTERLING Institut f. Tierzucht Universitlits Bonn, Bonn, B.R.D. The bull

  11. Generating relevant kinetic Monte Carlo catalogs using temperature accelerated dynamics with control over the accuracy

    SciTech Connect (OSTI)

    Chatterjee, Abhijit [Los Alamos National Laboratory; Voter, Arthur [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    We develop a variation of the temperature accelerated dynamics (TAD) method, called the p-TAD method, that efficiently generates an on-the-fly kinetic Monte Carlo (KMC) process catalog with control over the accuracy of the catalog. It is assumed that transition state theory is valid. The p-TAD method guarantees that processes relevant at the timescales of interest to the simulation are present in the catalog with a chosen confidence. A confidence measure associated with the process catalog is derived. The dynamics is then studied using the process catalog with the KMC method. Effective accuracy of a p-TAD calculation is derived when a KMC catalog is reused for conditions different from those the catalog was originally generated for. Different KMC catalog generation strategies that exploit the features of the p-TAD method and ensure higher accuracy and/or computational efficiency are presented. The accuracy and the computational requirements of the p-TAD method are assessed. Comparisons to the original TAD method are made. As an example, we study dynamics in sub-monolayer Ag/Cu(110) at the time scale of seconds using the p-TAD method. It is demonstrated that the p-TAD method overcomes several challenges plaguing the conventional KMC method.

  12. Field Accuracy Requirements for the Undulator Systems of the X-ray FEL's at TESLA

    E-Print Network [OSTI]

    Field Accuracy Requirements for the Undulator Systems of the X-ray FEL's at TESLA B. Faatz, J. 85, 22607 Hamburg, Germany Abstract In SASE FELs, the radiation power has to saturate in a single. The influence of the electron beam quality has been studied in detail in many papers. For the TESLA X-ray FEL

  13. Placement accuracy gauge for electrical components and method of using same

    SciTech Connect (OSTI)

    Biggs, P.M.; Dancer, L.K.; Yerganian, S.S.

    1988-10-11T23:59:59.000Z

    This patent describes a placement accuracy gauge for checking the accuracy of a machine which positions discrete electrical components on printed circuit boards wherein the machine utilizes a positioning head for releasably gripping the components, the machine effecting movement of the components and printed circuit boards relative to one another both orthogonally and rotationally; the placement accuracy gauge comprising: a substrate of transparent material having grid lines thereon and being dimensioned substantially the same as one of the printed circuit boards processed by the machine, the substrate having a surface divided into first, second and third regions; the grid lines in the first region being positioned in circle divided into segments with each segment having a line therethrough corresponding to a non-standard angle of machine rotation, the grid lines in each segment being parallel and perpendicular to the selected angle line; the second region including an array of grid lines arranged in target areas with each target area including two orthogonal grid loines and two diagonal grid lines with all grid lines intersecting at a common point, the second region further including an array of fiducial points recognizable by the machine; the third region having a plurality of grid lines arranged orthogonally with respect to one another in a rectangular area; whereby when the placement accuracy gauge is placed in the machine and components are placed within the grid areas and held thereto by a layer of adhesive.

  14. Measurement of laser intensities approaching 1015 with an accuracy of 1%

    E-Print Network [OSTI]

    Kheifets, Anatoli

    , 2013) Accurate knowledge of the intensity of focused ultra-short laser pulses is crucial to the correctMeasurement of laser intensities approaching 1015 W/cm2 with an accuracy of 1% M. G. Pullen1,2 , W interpretation of experimental results in strong-field physics. We have developed a technique to measure laser

  15. Topographic accuracy assessment of bare earth lidar-derived unstructured meshes Matthew V. Bilskie

    E-Print Network [OSTI]

    Central Florida, University of

    : Shallow water equations Unstructured mesh Lidar DEM Storm surge Accuracy a b s t r a c t This study water equations model. A methodology is developed to compute root mean square error (RMSE) and the 95th, urban regions, etc.) and have coarse mesh resolution in areas outside the focus region (e.g. deep water

  16. ON ACCURACY OF NUMERICAL EMC/EMI MODELING OVER A WIDE FREQUENCY RANGE

    E-Print Network [OSTI]

    Loyka, Sergey

    1 ON ACCURACY OF NUMERICAL EMC/EMI MODELING OVER A WIDE FREQUENCY RANGE Sergey Loyka EMC Lab: loyka@nemc.belpak.minsk.by Abstract - Numerical EMC/EMI modeling over a wide frequency range requires computational efficiency is proposed. I. INTRODUCTION Almost all the EMC problems are wide frequency range ones

  17. Improving the Accuracy of Diffusion MR Tractography Using RESTORE Lin-Ching Chang1,2

    E-Print Network [OSTI]

    Improving the Accuracy of Diffusion MR Tractography Using RESTORE Lin-Ching Chang1,2 , Carlo Pierpaoli2 1 Department of Electrical Engineering and Computer Science The Catholic University of America, Bethesda, MD, USA Abstract Diffusion magnetic resonance (MR) imaging is an effective tool in the assessment

  18. The accuracy of climate models' simulated season lengths and the effectiveness of grid scale correction factors

    SciTech Connect (OSTI)

    Winterhalter, Wade

    2011-09-01T23:59:59.000Z

    Global climate change is expected to impact biological populations through a variety of mechanisms including increases in the length of their growing season. Climate models are useful tools for predicting how season length might change in the future. However, the accuracy of these models tends to be rather low at regional geographic scales. Here, I determined the ability of several atmosphere and ocean general circulating models (AOGCMs) to accurately simulate historical season lengths for a temperate ectotherm across the continental United States. I also evaluated the effectiveness of regional-scale correction factors to improve the accuracy of these models. I found that both the accuracy of simulated season lengths and the effectiveness of the correction factors to improve the model's accuracy varied geographically and across models. These results suggest that regional specific correction factors do not always adequately remove potential discrepancies between simulated and historically observed environmental parameters. As such, an explicit evaluation of the correction factors' effectiveness should be included in future studies of global climate change's impact on biological populations.

  19. Improving Accuracy in Robotised Fibre Placement using Force and Visual Servoing External Hybrid Control Scheme

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    in various fields like planes, automotive, marine, sport and wind energy. This is a new fast growing market.3Improving Accuracy in Robotised Fibre Placement using Force and Visual Servoing External Hybrid, the company Coriolis Composites has developed an Automated Fibre Placement device already on the market

  20. RESEARCH Open Access Accuracy and precision of end-expiratory lung-

    E-Print Network [OSTI]

    RESEARCH Open Access Accuracy and precision of end-expiratory lung- volume measurements , Gilles Bernardin2 and Laurent Brochard1,9,10 Abstract Introduction: End-expiratory lung volume (EELV in lung volume above functional residual capacity measured with passive spirometry (PEEP

  1. Experimental and numerical study of the accuracy of flame-speed measurements for methane/air combustion in a slot burner

    SciTech Connect (OSTI)

    Selle, L.; Ferret, B. [Universite de Toulouse, INPT, UPS, IMFT, Institut de Mecanique des Fluides de Toulouse (France); CNRS, IMFT, Toulouse (France); Poinsot, T. [Universite de Toulouse, INPT, UPS, IMFT, Institut de Mecanique des Fluides de Toulouse (France); CNRS, IMFT, Toulouse (France); CERFACS, Toulouse (France)

    2011-01-15T23:59:59.000Z

    Measuring the velocities of premixed laminar flames with precision remains a controversial issue in the combustion community. This paper studies the accuracy of such measurements in two-dimensional slot burners and shows that while methane/air flame speeds can be measured with reasonable accuracy, the method may lack precision for other mixtures such as hydrogen/air. Curvature at the flame tip, strain on the flame sides and local quenching at the flame base can modify local flame speeds and require corrections which are studied using two-dimensional DNS. Numerical simulations also provide stretch, displacement and consumption flame speeds along the flame front. For methane/air flames, DNS show that the local stretch remains small so that the local consumption speed is very close to the unstretched premixed flame speed. The only correction needed to correctly predict flame speeds in this case is due to the finite aspect ratio of the slot used to inject the premixed gases which induces a flow acceleration in the measurement region (this correction can be evaluated from velocity measurement in the slot section or from an analytical solution). The method is applied to methane/air flames with and without water addition and results are compared to experimental data found in the literature. The paper then discusses the limitations of the slot-burner method to measure flame speeds for other mixtures and shows that it is not well adapted to mixtures with a Lewis number far from unity, such as hydrogen/air flames. (author)

  2. Cross sections of neutron-induced reactions

    SciTech Connect (OSTI)

    Mukhopadhyay, Tapan; Lahiri, Joydev; Basu, D. N. [Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700064 (India)

    2010-10-15T23:59:59.000Z

    We study the properties of the neutron-nucleus total and reaction cross sections for several nuclei. We have applied an analytical model, the nuclear Ramsauer model, justified it from the nuclear reaction theory approach, and extracted the values of 12 parameters used in the model. The given parametrization has an advantage as phenomenological optical model potentials are limited up to 150-200 MeV. The present model provides good estimates of the total cross sections for several nuclei particularly at high energies.

  3. Covariance Evaluation Methodology for Neutron Cross Sections

    SciTech Connect (OSTI)

    Herman,M.; Arcilla, R.; Mattoon, C.M.; Mughabghab, S.F.; Oblozinsky, P.; Pigni, M.; Pritychenko, b.; Songzoni, A.A.

    2008-09-01T23:59:59.000Z

    We present the NNDC-BNL methodology for estimating neutron cross section covariances in thermal, resolved resonance, unresolved resonance and fast neutron regions. The three key elements of the methodology are Atlas of Neutron Resonances, nuclear reaction code EMPIRE, and the Bayesian code implementing Kalman filter concept. The covariance data processing, visualization and distribution capabilities are integral components of the NNDC methodology. We illustrate its application on examples including relatively detailed evaluation of covariances for two individual nuclei and massive production of simple covariance estimates for 307 materials. Certain peculiarities regarding evaluation of covariances for resolved resonances and the consistency between resonance parameter uncertainties and thermal cross section uncertainties are also discussed.

  4. Total Cross Sections for Neutron Scattering

    E-Print Network [OSTI]

    C. R. Chinn; Ch. Elster; R. M. Thaler; S. P. Weppner

    1994-10-19T23:59:59.000Z

    Measurements of neutron total cross-sections are both extensive and extremely accurate. Although they place a strong constraint on theoretically constructed models, there are relatively few comparisons of predictions with experiment. The total cross-sections for neutron scattering from $^{16}$O and $^{40}$Ca are calculated as a function of energy from $50-700$~MeV laboratory energy with a microscopic first order optical potential derived within the framework of the Watson expansion. Although these results are already in qualitative agreement with the data, the inclusion of medium corrections to the propagator is essential to correctly predict the energy dependence given by the experiment.

  5. Precise neutron inelastic cross section measurements

    SciTech Connect (OSTI)

    Negret, Alexandru [Horia Hulubei National Institute for Physics and Nuclear Engineering, Reactorului 30, 077125 Bucharest-Magurele (Romania)

    2012-11-20T23:59:59.000Z

    The design of a new generation of nuclear reactors requires the development of a very precise neutron cross section database. Ongoing experiments performed at dedicated facilities aim to the measurement of such cross sections with an unprecedented uncertainty of the order of 5% or even smaller. We give an overview of such a facility: the Gamma Array for Inelastic Neutron Scattering (GAINS) installed at the GELINA neutron source of IRMM, Belgium. Some of the most challenging difficulties of the experimental approach are emphasized and recent results are shown.

  6. Section B: Supplies, Services and Costs

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary of Energy Advisory Board FollowSection 3161 SECTION B

  7. Section C: Description, Specifications and Work Statements

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary of Energy Advisory Board FollowSection 3161 SECTION BPART I

  8. Section M: Evaluations Factors for Award

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary of Energy Advisory Board FollowSection 3161L-1 SectionIVV

  9. MiniBooNE Cross Sections

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your1 SECTION A. Revised:7, atMineralMuonSections Group

  10. Retrieval of Urban Boundary Layer Structures from Doppler Lidar Data. Part I: Accuracy Assessment

    SciTech Connect (OSTI)

    Xia, Quanxin; Lin, Ching Long; Calhoun, Ron; Newsom, Rob K.

    2008-01-01T23:59:59.000Z

    Two coherent Doppler lidars from the US Army Research Laboratory (ARL) and Arizona State University (ASU) were deployed in the Joint Urban 2003 atmospheric dispersion field experiment (JU2003) held in Oklahoma City. The dual lidar data are used to evaluate the accuracy of the four-dimensional variational data assimilation (4DVAR) method and identify the coherent flow structures in the urban boundary layer. The objectives of the study are three-fold. The first objective is to examine the effect of eddy viscosity models on the quality of retrieved velocity data. The second objective is to determine the fidelity of single-lidar 4DVAR and evaluate the difference between single- and dual-lidar retrievals. The third objective is to correlate the retrieved flow structures with the ground building data. It is found that the approach of treating eddy viscosity as part of control variables yields better results than the approach of prescribing viscosity. The ARL single-lidar 4DVAR is able to retrieve radial velocity fields with an accuracy of 98% in the along-beam direction and 80-90% in the cross-beam direction. For the dual-lidar 4DVAR, the accuracy of retrieved radial velocity in the ARL cross-beam direction improves to 90-94%. By using the dual-lidar retrieved data as a reference, the single-lidar 4DVAR is able to recover fluctuating velocity fields with 70-80% accuracy in the along-beam direction and 60-70% accuracy in the cross-beam direction. Large-scale convective roll structures are found in the vicinity of downtown airpark and parks. Vortical structures are identified near the business district. Strong updrafts and downdrafts are also found above a cluster of restaurants.

  11. 45. Neutrino Cross Section Measurements 1 45. Neutrino Cross Section Measurements

    E-Print Network [OSTI]

    for such information in the interpretation of neutrino oscillation data. Scattering results on both charged current (CC, analysis techniques, and detector technologies. With the advent of intense neutrino sources for oscillation45. Neutrino Cross Section Measurements 1 45. Neutrino Cross Section Measurements Written in April

  12. Chapter 7, section 6-8 Chapter 8, section 1-5

    E-Print Network [OSTI]

    The choice is arbitrary because you normally need the difference in potential energy, which is independent1 Week 7, Chapter 7, section 6-8 Chapter 8, section 1-5 Potential Energy and Energy Conservation Potential Energy Potential energy is energy related to the configuration of a system in which

  13. Invasion Ecology of Aquatic Animals FAS 4932 (section 8143) and FAS 6932 (Section 6725)

    E-Print Network [OSTI]

    Watson, Craig A.

    Invasion Ecology of Aquatic Animals FAS 4932 (section 8143) and FAS 6932 (Section 6725) Fall 2006 will provide a comprehensive overview of the field of invasion ecology and will emphasize aspects related will be presented the ecological concepts and debates underlying this developing field; the biology and life history

  14. Report ofReport of Nuclear Fusion Section,Nuclear Fusion Section,

    E-Print Network [OSTI]

    Report ofReport of Nuclear Fusion Section,Nuclear Fusion Section, National Committee for NuclearJapan Atomic Energy Research Institute On the New Way of Nuclear Fusion ResearchOn the New Way of Nuclear on the new way of developing nuclear fusion under the new circumstances (chair: Prof. A. Koyama) under

  15. Design and producing of fine-group cross section library HENDL3.0/FG for subcritical system

    SciTech Connect (OSTI)

    Zou, J.; Zeng, Q.; Xu, D.; Hu, L.; Long, P. [Inst. of Nuclear Energy Safety Technology, Chinese Academy of Sciences, Hefei, Anhui, 230031 (China); School of Nuclear Science and Technology, Univ. of Science and Technology of China, No.350 Shushanhu Road, Shushan District, Hefei, Anhui, 230031 (China)

    2012-07-01T23:59:59.000Z

    To improve the accuracy of the neutron analyses for subcritical system with thermal fission blanket, a coupled neutron and photon (315 n + 42{gamma}) fine-group cross section library HENDL3.0/FG based on ENDF/B-VII, JEFF3.1 and JENDL3.3 was produced by FDS team. In order to test the availability and reliability of the HENDL3.0/FG data library, shielding and critical safety benchmarks were performed with VisualBUS code. The testing results indicated that the discrepancy between calculation and experimental values of nuclear parameters fell in a reasonable range. It showed that the nuclear data library had accuracy and availability. (authors)

  16. BUSINESS APPLICATION SECTION 1: BUSINESS CONTACT INFORMATION

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    Location: (street, building, city, State) Number of Employees in NYS prior to moving out of state: Cert ID Limited Liability Company SECTION 2: BUSINESS INFORMATION New Business Existing NYS Business Expanding Previous NYS Business relocating to NYS NYS Incubator Graduate FEIN #: Website: Indicate the Primary North

  17. West Virginia University 1 In this section

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    West Virginia University 1 FERPA In this section: · Notice to Students Regarding FERPA Students at West Virginia University and its divisional campuses ("WVU" or "University") benefit from the Family Educational Rights and Privacy Act of 1974. This Act, with which West Virginia University intends

  18. Equivalence and Order Section 1: Equivalence

    E-Print Network [OSTI]

    Bernstein, Daniel

    Unit EO Equivalence and Order Section 1: Equivalence The concept of an equivalence relation to us, as "equivalence relation" turns out to be just another name for "partition of a set." Our start with the definition. Definition 1 (Equivalence relation) An equivalence relation on a set

  19. Section Notes 3 The Simplex Algorithm

    E-Print Network [OSTI]

    Chen, Yiling

    Section Notes 3 The Simplex Algorithm Applied Math 121 Week of September 22, 2014 Goals for the week · understand how to get from an LP to a simplex tableau. · be familiar with reduced costs, optimal solutions, different types of variables and their roles. · understand the steps of simplex phases I and II

  20. Section Notes 3 The Simplex Algorithm

    E-Print Network [OSTI]

    Chen, Yiling

    Section Notes 3 The Simplex Algorithm Applied Math 121 Week of February 14, 2011 Goals for the week · understand how to get from an LP to a simplex tableau. · be familiar with reduced costs, optimal solutions, different types of variables and their roles. · understand the steps of simplex phases I and II. · be able

  1. Section Notes 3 The Simplex Algorithm

    E-Print Network [OSTI]

    Chen, Yiling

    Section Notes 3 The Simplex Algorithm Applied Math 121 Week of February 17, 2014 Goals for the week · understand how to get from an LP to a simplex tableau. · be familiar with reduced costs, optimal solutions, different types of variables and their roles. · understand the steps of simplex phases I and II. · be able

  2. HUMAN RESOURCES MANUAL SECTION 1: GENERAL PROVISIONS

    E-Print Network [OSTI]

    HUMAN RESOURCES MANUAL SECTION 1: GENERAL PROVISIONS 1 | P a g e S e c t i o n 1 Purpose The purpose of this Human Resources Manual is to: 1. Provide the personnel and payroll policies and procedures, regulations and benefits. 3. Establish requirements and instructions for submission of Human Resources System

  3. Business Application Instructions Section 2: Business Information

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    Business Application Instructions Section 2: Business Information New (or "Eligible") business: means a business that satisfies all of the following tests: a) the business must not be operating; b) the business must not be moving existing jobs into the Tax-Free NY Area from another area

  4. SPECIAL SECTION GUEST EDITORIAL Optics in Neuroscience

    E-Print Network [OSTI]

    SPECIAL SECTION GUEST EDITORIAL Optics in Neuroscience In recent years there has been a strong trend to enhance tra- ditional research techniques in neuroscience with optical- based techniques and temporally spanning submillisecond to sec- onds. Optical techniques are attractive because they enable

  5. SECTION GS1020 CONSTRUCTION CODE REQUIREMENTS

    E-Print Network [OSTI]

    Zhang, Yuanlin

    101, Life Safety Code; 5. National Fire Protection Association Codes and Standards; 6. ANSI/ASME A17SECTION GS1020 ­ CONSTRUCTION CODE REQUIREMENTS PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings includes the following: 1. Construction code requirements for all construction at Texas Tech University. 1

  6. Dr. Thad M. Adams Materials Technology Section

    E-Print Network [OSTI]

    Dr. Thad M. Adams Materials Technology Section Savannah River National Laboratory DOE Hydrogen extraction/handling/separation/storage operations · Applied R&D provided by Savannah River National for Hydrogen Service #12;Hydrogen Technology at the SavannahHydrogen Technology at the Savannah River SiteRiver

  7. Energy and Society Week 4 Section Solution

    E-Print Network [OSTI]

    Kammen, Daniel M.

    was the largest source of primary energy consumption for the world in 2013: A. Coal B. Natural gas C. Nuclear D of world energy. Oil, coal, natural gas, nuclear, hydro, and renewable contributed to the world's 20131 9/17/2014 Energy and Society Week 4 Section Solution TOPIC 1: Energy & Development: [iClicker]-1

  8. Physical sectioning in 3D biological microscopy

    E-Print Network [OSTI]

    Guntupalli, Jyothi Swaroop

    2008-10-10T23:59:59.000Z

    ...................................................................... 61 G Stepan’s models of regenerative chatter in metal cutting........................... 62 H Chatter model for KESM............................................................................ 64 ix CHAPTER Page I Summary... based on the source of vibration: frictional, regenerative, mode-coupling, and thermo-mechanical [7]. Frictional chatter gets its excitation energy from the friction force either between the workpiece and the tool 15 flank, or between the section...

  9. Physical sectioning in 3D biological microscopy

    E-Print Network [OSTI]

    Guntupalli, Jyothi Swaroop

    2009-05-15T23:59:59.000Z

    ...................................................................... 61 G Stepan?s models of regenerative chatter in metal cutting........................... 62 H Chatter model for KESM............................................................................ 64 ix CHAPTER Page I Summary... based on the source of vibration: frictional, regenerative, mode-coupling, and thermo-mechanical [7]. Frictional chatter gets its excitation energy from the friction force either between the workpiece and the tool 15 flank, or between the section...

  10. electronic reprint Acta Crystallographica Section B

    E-Print Network [OSTI]

    Vocadlo, Lidunka

    electronic reprint Acta Crystallographica Section B Structural Science ISSN 0108-7681 Structures, concluding that a CsCl-type structure would be the thermo- dynamically most stable phase for pressures calculations Lidunka Vocadlo, Geoffrey D. Price and I. G. Wood Copyright © International Union

  11. Section 4 -Financial Information A. General Information

    E-Print Network [OSTI]

    Pantaleone, Jim

    Section 4 - Financial Information A. General Information 1. All University Housing and Dining fees of Alaska campuses until the debt is paid in full. B. Security deposit 1. A security deposit is required performance of the agreement, and (2) for damages beyond normal wear and tear. The security deposit does

  12. electronic reprint Acta Crystallographica Section C

    E-Print Network [OSTI]

    Downs, Robert T.

    electronic reprint Acta Crystallographica Section C Crystal Structure Communications ISSN 0108 that this cover page is retained. Republication of this article or its storage in electronic databases other than of phosphorus and arsenic, especially their roles in soils, water, and waste management (e.g. Huang & Shenker

  13. Testing (Validating?) Cross Sections with ICSBEP Benchmarks

    SciTech Connect (OSTI)

    Kahler, Albert C. III [Los Alamos National Laboratory

    2012-06-28T23:59:59.000Z

    We discuss how to use critical benchmarks from the International Handbook of Evaluated Criticality Safety Benchmark Experiments to determine the applicability of specific cross sections to the end-user's problem of interest. Particular attention is paid to making sure the selected suite of benchmarks includes the user's range of applicability (ROA).

  14. electronic reprint Acta Crystallographica Section E

    E-Print Network [OSTI]

    Downs, Robert T.

    : W. Clegg and D. G. Watson Goethite, «-FeO(OH), from single-crystal data Hexiong Yang, Ren Lu, Robert Crystallographica Section E Structure Reports Online ISSN 1600-5368 Goethite, a-FeO(OH), from single-crystal data Union of Crystallography All rights reserved This is the first reported structure refinement of goethite

  15. Alaska Administrative Code - Title 17, Chapter 10, Section 12...

    Open Energy Info (EERE)

    RegulationRegulation: Alaska Administrative Code - Title 17, Chapter 10, Section 12 - Approval Requirements for EncroachmentsLegal Abstract This section describes the...

  16. Model for Sustainable Urban Design With Expanded Sections on...

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

    Design With Expanded Sections on Distributed Energy Resources, February 2004 Model for Sustainable Urban Design With Expanded Sections on Distributed Energy Resources, February...

  17. Enabling Technologies for Ceramic Hot Section Components

    SciTech Connect (OSTI)

    Venkat Vedula; Tania Bhatia

    2009-04-30T23:59:59.000Z

    Silicon-based ceramics are attractive materials for use in gas turbine engine hot sections due to their high temperature mechanical and physical properties as well as lower density than metals. The advantages of utilizing ceramic hot section components include weight reduction, and improved efficiency as well as enhanced power output and lower emissions as a result of reducing or eliminating cooling. Potential gas turbine ceramic components for industrial, commercial and/or military high temperature turbine applications include combustor liners, vanes, rotors, and shrouds. These components require materials that can withstand high temperatures and pressures for long duration under steam-rich environments. For Navy applications, ceramic hot section components have the potential to increase the operation range. The amount of weight reduced by utilizing a lighter gas turbine can be used to increase fuel storage capacity while a more efficient gas turbine consumes less fuel. Both improvements enable a longer operation range for Navy ships and aircraft. Ceramic hot section components will also be beneficial to the Navy's Growth Joint Strike Fighter (JSF) and VAATE (Versatile Affordable Advanced Turbine Engines) initiatives in terms of reduced weight, cooling air savings, and capability/cost index (CCI). For DOE applications, ceramic hot section components provide an avenue to achieve low emissions while improving efficiency. Combustors made of ceramic material can withstand higher wall temperatures and require less cooling air. Ability of the ceramics to withstand high temperatures enables novel combustor designs that have reduced NO{sub x}, smoke and CO levels. In the turbine section, ceramic vanes and blades do not require sophisticated cooling schemes currently used for metal components. The saved cooling air could be used to further improve efficiency and power output. The objectives of this contract were to develop technologies critical for ceramic hot section components for gas turbine engines. Significant technical progress has been made towards maturation of the EBC and CMC technologies for incorporation into gas turbine engine hot-section. Promising EBC candidates for longer life and/or higher temperature applications relative to current state of the art BSAS-based EBCs have been identified. These next generation coating systems have been scaled-up from coupons to components and are currently being field tested in Solar Centaur 50S engine. CMC combustor liners were designed, fabricated and tested in a FT8 sector rig to demonstrate the benefits of a high temperature material system. Pretest predictions made through the use of perfectly stirred reactor models showed a 2-3x benefit in CO emissions for CMC versus metallic liners. The sector-rig test validated the pretest predictions with >2x benefit in CO at the same NOx levels at various load conditions. The CMC liners also survived several trip shut downs thereby validating the CMC design methodology. Significant technical progress has been made towards incorporation of ceramic matrix composites (CMC) and environmental barrier coatings (EBC) technologies into gas turbine engine hot-section. The second phase of the program focused on the demonstration of a reverse flow annular CMC combustor. This has included overcoming the challenges of design and fabrication of CMCs into 'complex' shapes; developing processing to apply EBCs to 'engine hardware'; testing of an advanced combustor enabled by CMCs in a PW206 rig; and the validation of performance benefits against a metal baseline. The rig test validated many of the pretest predictions with a 40-50% reduction in pattern factor compared to the baseline and reductions in NOx levels at maximum power conditions. The next steps are to develop an understanding of the life limiting mechanisms in EBC and CMC materials, developing a design system for EBC coated CMCs and durability testing in an engine environment.

  18. Boosting the accuracy of SPH techniques: Newtonian and special-relativistic tests

    E-Print Network [OSTI]

    Rosswog, S

    2014-01-01T23:59:59.000Z

    We explore measures to increase the accuracy of SPH methods with respect to commonly used standard techniques. Our main focus here is special-relativistic SPH, but all measures can straight forwardly be applied in the Newtonian case as well. The first improvement concerns the calculation of gradients. Here a scheme that requires the (analytical) inversion of a small matrix is explored. For regular particle distributions this scheme yields gradient estimates that are many orders of magnitude more accurate than the standard SPH gradient. We apply such gradients in fully conservative special-relativistic SPH formulations and find in a large number of benchmark tests that they substantially increase SPH's accuracy. As a second measure, we explore a large number of kernel functions. The most commonly used cubic spline SPH kernel performs rather poorly, the best overall results are obtained for a high-order Wendland kernel which allows for only very little sub-resolution particle motion (noise) and enforces a very ...

  19. On the accuracy of crosstalk calibration of polarimetric SAR using natural clutter statistics

    SciTech Connect (OSTI)

    Cordey, R.A. (GEC-Marconi Research Centre, Chelmsford (United Kingdom))

    1993-03-01T23:59:59.000Z

    A method for the routine correction of fully polarimetric synthetic aperture radar (SAR) images has been proposed by van Zyl which uses assumed statistical properties of natural distributed targets. The method has the potential to improve dramatically the accuracy of polarimetric imagery contaminated by antenna crosstalk and may be of importance for future spaceborne polarimetric SAR's as well as current airborne systems. The accuracy of the method is assessed here when the statistics of clutter deviate from the assumed form, and limits are placed on likely acceptable deviations. An investigation is presented of these statistics for a heterogeneous forestry and agricultural scene imaged by the NASA/JPL radar. The only significant deviations were found over certain man-made targets, including villages, and a single agricultural field. The results lend support to the routine use of the van Zyl method in such applications.

  20. Assessing the Accuracy of Masses and Spatial Correlations of Galaxy Groups

    E-Print Network [OSTI]

    James J. Frederic

    1994-09-07T23:59:59.000Z

    Two algorithms for the identification of galaxy groups from redshift surveys are tested by application to simulated data derived from N-body simulation. The accuracy of the membership assignments by these algorithms is studied in a companion to this paper (Frederic 1994). Here we evaluate the accuracy of group mass estimates and the group-group correlation function. We find a strong bias to low values in the virial mass estimates of groups identified using the algorithm of Nolthenius \\& White (1987). The Huchra \\& Geller (1982) algorithm gives virial mass estimates which are correct on average. These two algorithms result in group catalogs with similar two-point correlations. We find that groups in a CDM model have excessively large mass to light ratios even when the group richness distribution agrees with observations. We also find that our CDM groups are more strongly correlated than individual halos (galaxies), unlike the groups in the CfA redshift survey extension.

  1. Clean Water Act (Section 404) and Rivers and Harbors Act (Sections 9 and 10)

    SciTech Connect (OSTI)

    Not Available

    1992-03-01T23:59:59.000Z

    This Reference Book contains a current copy of the Clean Water Act (Section 404) and the Rivers and Harbors Act (Sections 9 and 10) and those regulations that implement those sections of the statutes and appear to be most relevant to DOE activities. The document is provided to DOE and contractor staff for informational purposes only and should not be interpreted as legal guidance. Updates that include important new requirements will be provided periodically. Questions concerning this Reference Book may be directed to Mark Petts, IH-231 (FTS 896-2609 or Commercial 202/586-2609).

  2. SU-E-J-117: Verification Method for the Detection Accuracy of Automatic Winston Lutz Test

    SciTech Connect (OSTI)

    Tang, A; Chan, K; Fee, F; Chau, R [Queen Elizabeth Hospital (Hong Kong)

    2014-06-01T23:59:59.000Z

    Purpose: Winston Lutz test (WLT) has been a standard QA procedure performed prior to SRS treatment, to verify the mechanical iso-center setup accuracy upon different Gantry/Couch movements. Several detection algorithms exist,for analyzing the ball-radiation field alignment automatically. However, the accuracy of these algorithms have not been fully addressed. Here, we reveal the possible errors arise from each step in WLT, and verify the software detection accuracy with the Rectilinear Phantom Pointer (RLPP), a tool commonly used for aligning treatment plan coordinate with mechanical iso-center. Methods: WLT was performed with the radio-opaque ball mounted on a MIS and irradiated onto EDR2 films. The films were scanned and processed with an in-house Matlab program for automatic iso-center detection. Tests were also performed to identify the errors arise from setup, film development and scanning process. The radioopaque ball was then mounted onto the RLPP, and offset laterally and longitudinally in 7 known positions ( 0, ±0.2, ±0.5, ±0.8 mm) manually for irradiations. The gantry and couch was set to zero degree for all irradiation. The same scanned images were processed repeatedly to check the repeatability of the software. Results: Miminal discrepancies (mean=0.05mm) were detected with 2 films overlapped and irradiated but developed separately. This reveals the error arise from film processor and scanner alone. Maximum setup errors were found to be around 0.2mm, by analyzing data collected from 10 irradiations over 2 months. For the known shift introduced using the RLPP, the results agree with the manual offset, and fit linearly (R{sup 2}>0.99) when plotted relative to the first ball with zero shift. Conclusion: We systematically reveal the possible errors arise from each step in WLT, and introduce a simple method to verify the detection accuracy of our in-house software using a clinically available tool.

  3. Influence of phase fluctuations in the troposphere on SAR calibration accuracy

    SciTech Connect (OSTI)

    Velichko, S.A.; Kuleminn, G.P.; Lukin, V.V. [and others

    1996-11-01T23:59:59.000Z

    The conditions of SAR signal propagation through a turbulent troposphere and precipitations are discussed. The statistical and spectral-correlation characteristics of received signal amplitude and phase fluctuations caused by these factors are evaluated for spaceborne and airborne SARs. The numerical simulation results dealing with SAR response parameter statistical analysis are presented. They demonstrate the possible strong degradation of the response resulting in low accuracy of SAR calibration for high frequencies and great angles of Earth surface vision. 15 refs., 2 tabs.

  4. Achieving energy conservation in PoissonBoltzmann molecular dynamics: Accuracy and precision with finite-difference algorithms

    E-Print Network [OSTI]

    Zhao, Hongkai

    Achieving energy conservation in Poisson­Boltzmann molecular dynamics: Accuracy and precision t Violation of energy conservation in Poisson­Boltzmann molecular dynamics, due to the limited accuracy method. One of the issues is the observed violation of energy conservation in PB molecular dynamics

  5. KYDEX, LLC Inventory Accuracy Project Recap Summary Brett Moyer, Daniel Shen, Shreyank Patel, Sidra Maryam, Yuxiang Zhang

    E-Print Network [OSTI]

    Demirel, Melik C.

    KYDEX, LLC Inventory Accuracy Project Recap Summary Brett Moyer, Daniel Shen, Shreyank Patel, Sidra, of this project was to improve the accuracy of the inventory system from 30% to 75%. After conducting site visits and analyzing the scrap inventory data and the movement of scrap material, a list of improvement targets

  6. FOURIER AND BIOT NUMBERS AND THE ACCURACY OF CONDUCTION MODELLING Jan L M Hensen, Abdullatif E Nakhi

    E-Print Network [OSTI]

    Mukasyan, Alexander

    FOURIER AND BIOT NUMBERS AND THE ACCURACY OF CONDUCTION MODELLING Jan L M Hensen, Abdullatif E of the associated theory the paper concentrates on the effects of Fourier and Biot numbers on the accuracy, °C Fo Fourier number ( t x-2 ), - thermal conductivity, W m-1 K-1 h convective heat transfer

  7. Photonuclear Reaction Cross Sections for Gallium Isotopes

    E-Print Network [OSTI]

    Serkan Akkoyun; Tuncay Bayram

    2014-09-08T23:59:59.000Z

    The photon induced reactions which are named as photonuclear reactions have a great importance in many field of nuclear, radiation physics and related fields. Since we have planned to perform photonuclear reaction on gallium target with bremmstrahlung photons from clinical linear accelerator in the future, the cross-sections of neutron (photo-neutron ({\\gamma},xn)) and proton (photo-proton ({\\gamma},xn)) productions after photon activation have been calculated by using TALYS 1.2 computer code in this study. The target nucleus has been considered gallium which has two stable isotopes, 69Ga and 71Ga. According to the results, we have seen that the calculations are in harmony in the limited literature values. Furthermore, the pre-equilibrium and compound process contributions to the total cross-section have been investigated.

  8. Electron capture cross sections for stellar nucleosynthesis

    E-Print Network [OSTI]

    Giannaka, P G

    2015-01-01T23:59:59.000Z

    In the first stage of this work, we perform detailed calculations for the cross sections of the electron capture on nuclei under laboratory conditions. Towards this aim we exploit the advantages of a refined version of the proton-neutron quasi-particle random-phase approximation (pn-QRPA) and carry out state-by-state evaluations of the rates of exclusive processes that lead to any of the accessible transitions within the chosen model space. In the second stage of our present study, we translate the above mentioned $e^-$-capture cross sections to the stellar environment ones by inserting the temperature dependence through a Maxwell-Boltzmann distribution describing the stellar electron gas. As a concrete nuclear target we use the $^{66}Zn$ isotope, which belongs to the iron group nuclei and plays prominent role in stellar nucleosynthesis at core collapse supernovae environment.

  9. Neural networks Chapter 19, Sections 15

    E-Print Network [OSTI]

    Hawick, Ken

    = a parameterized family of nonlinear functions: a5 = g(W3,5 · a3 + W4,5 · a4) = g(W3,5 · g(W1,3 · a1 + W2,3 · a2) + W4,5 · g(W1,4 · a1 + W2,4 · a2)) Chapter 19, Sections 1­5 8 #12;Perceptrons Input Units Units Output

  10. Clean Water Act (excluding Section 404)

    SciTech Connect (OSTI)

    Not Available

    1993-01-15T23:59:59.000Z

    This Reference Book contains a current copy of the Clean Water Act (excluding Section 404) and those regulations that implement the statutes and appear to be most relevant to US Department of Energy (DOE) activities. The document is provided to DOE and contractor staff for informational purposes only and should not be interpreted as legal guidance. Updates that include important new requirements will be provided periodically. Questions concerning this Reference Book may be directed to Mark Petts, EH-231 (202/586-2609).

  11. Interfacial Transport Test section length = 4 m

    E-Print Network [OSTI]

    Abdou, Mohamed

    of applied electric currents: Magnetic Propulsion and other active electromagnetic restraint and pumping field and magnetic propulsion current 4.0E-03 4.5E-03 5.0E-03 5.5E-03 6.0E-03 0 0.05 0.1 0.15 0.2 0.25 0 downstream for entrance slot #12;Inclined-Plane Test Section · 300 A available for magnetic propulsion tests

  12. FINANCE AND ADMINISTRATION EOC Title: Finance/Admin Section Chief

    E-Print Network [OSTI]

    Walker, Matthew P.

    FINANCE AND ADMINISTRATION EOC Title: Finance/Admin Section Chief General Description The Finance and for supervising members of the Finance/Administration Section. Key Role & Responsibilities · Coordinate all for Command and General Staff for Complex Incidents Training for Section Chiefs · Finance/Admin Section Chief

  13. A measurement technique to determine the calibration accuracy of an electromagnetic tracking system to radiation isocenter

    SciTech Connect (OSTI)

    Litzenberg, Dale W.; Gallagher, Ian; Masi, Kathryn J.; Lee, Choonik; Prisciandaro, Joann I.; Hamstra, Daniel A.; Ritter, Timothy; Lam, Kwok L. [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan 48109-5010 (United States)] [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan 48109-5010 (United States)

    2013-08-15T23:59:59.000Z

    Purpose: To present and characterize a measurement technique to quantify the calibration accuracy of an electromagnetic tracking system to radiation isocenter.Methods: This technique was developed as a quality assurance method for electromagnetic tracking systems used in a multi-institutional clinical hypofractionated prostate study. In this technique, the electromagnetic tracking system is calibrated to isocenter with the manufacturers recommended technique, using laser-based alignment. A test patient is created with a transponder at isocenter whose position is measured electromagnetically. Four portal images of the transponder are taken with collimator rotations of 45° 135°, 225°, and 315°, at each of four gantry angles (0°, 90°, 180°, 270°) using a 3 × 6 cm{sup 2} radiation field. In each image, the center of the copper-wrapped iron core of the transponder is determined. All measurements are made relative to this transponder position to remove gantry and imager sag effects. For each of the 16 images, the 50% collimation edges are identified and used to find a ray representing the rotational axis of each collimation edge. The 16 collimator rotation rays from four gantry angles pass through and bound the radiation isocenter volume. The center of the bounded region, relative to the transponder, is calculated and then transformed to tracking system coordinates using the transponder position, allowing the tracking system's calibration offset from radiation isocenter to be found. All image analysis and calculations are automated with inhouse software for user-independent accuracy. Three different tracking systems at two different sites were evaluated for this study.Results: The magnitude of the calibration offset was always less than the manufacturer's stated accuracy of 0.2 cm using their standard clinical calibration procedure, and ranged from 0.014 to 0.175 cm. On three systems in clinical use, the magnitude of the offset was found to be 0.053 ± 0.036, 0.121 ± 0.023, and 0.093 ± 0.013 cm.Conclusions: The method presented here provides an independent technique to verify the calibration of an electromagnetic tracking system to radiation isocenter. The calibration accuracy of the system was better than the 0.2 cm accuracy stated by the manufacturer. However, it should not be assumed to be zero, especially for stereotactic radiation therapy treatments where planning target volume margins are very small.

  14. Averaging cross section data so we can fit it

    SciTech Connect (OSTI)

    Brown, D. [Brookhaven National Lab. (BNL), Upton, NY (United States). NNDC

    2014-10-23T23:59:59.000Z

    The 56Fe cross section we are interested in have a lot of fluctuations. We would like to fit the average of the cross section with cross sections calculated within EMPIRE. EMPIRE is a Hauser-Feshbach theory based nuclear reaction code, requires cross sections to be smoothed using a Lorentzian profile. The plan is to fit EMPIRE to these cross sections in the fast region (say above 500 keV).

  15. SECTION 12-HAZARD COMMUNICATION PROGRAM (HCP) 29 CFR Section 1920-"Hazardous Communications" states that, "the purpose of this section is to ensure

    E-Print Network [OSTI]

    Selmic, Sandra

    144 SECTION 12- HAZARD COMMUNICATION PROGRAM (HCP) 29 CFR Section 1920- "Hazardous Communications" states that, "the purpose of this section is to ensure that the hazards of all chemicals produced or imported are evaluated, and that information concerning their hazards is transmitted to employers

  16. Electron drift velocities in He and water mixtures: Measurements and an assessment of the water vapour cross-section sets

    SciTech Connect (OSTI)

    Urquijo, J. de; Juárez, A. M. [Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, 62251, Cuernavaca, Mor. (Mexico); Basurto, E. [División de Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana, Av. San Pablo 180, 02200, México, D.F. (Mexico); Ness, K. F.; Robson, R. E.; White, R. D. [School of Engineering and Physical Sciences, James Cook University, Townsville 4810 (Australia); Brunger, M. J. [School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001 (Australia); Institute of Mathematical Sciences, University of Malaya, 5063 Kuala Lumpur (Malaysia)

    2014-07-07T23:59:59.000Z

    The drift velocity of electrons in mixtures of gaseous water and helium is measured over the range of reduced electric fields 0.1–300 Td using a pulsed-Townsend technique. Admixtures of 1% and 2% water to helium are found to produce negative differential conductivity (NDC), despite NDC being absent from the pure gases. The measured drift velocities are used as a further discriminative assessment on the accuracy and completeness of a recently proposed set of electron-water vapour cross-sections [K. F. Ness, R. E. Robson, M. J. Brunger, and R. D. White, J. Chem. Phys. 136, 024318 (2012)]. A refinement of the momentum transfer cross-section for electron-water vapour scattering is presented, which ensures self-consistency with the measured drift velocities in mixtures with helium to within approximately 5% over the range of reduced fields considered.

  17. Fusion cross sections at deep subbarrier energies

    E-Print Network [OSTI]

    K. Hagino; N. Rowley; M. Dasgupta

    2003-02-12T23:59:59.000Z

    A recent publication reports that heavy-ion fusion cross sections at extreme subbarrier energies show a continuous change of their logarithmic slope with decreasing energy, resulting in a much steeper excitation function compared with theoretical predictions. We show that the energy dependence of this slope is partly due to the asymmetric shape of the Coulomb barrier, that is its deviation from a harmonic shape. We also point out that the large low-energy slope is consistent with the surprisingly large surface diffusenesses required to fit recent high-precision fusion data.

  18. Heavy-Section Steel Irradiation Program

    SciTech Connect (OSTI)

    Rosseel, T.M.

    2000-04-01T23:59:59.000Z

    Maintaining the integrity of the reactor pressure vessel (RPV) in a light-water-cooled nuclear power plant is crucial in preventing and controlling severe accidents that have the potential for major contamination release. Because the RPV is the only key safety-related component of the plant for which a redundant backup system does not exist, it is imperative to fully understand the degree of irradiation-induced degradation of the RPV's fracture resistance that occurs during service. For this reason, the Heavy-Section Steel Irradiation (HSSI) Program has been established.

  19. Cross section for charmonium absorption by nucleons

    E-Print Network [OSTI]

    Liu, W.; Ko, Che Ming; Lin, ZW.

    2002-01-01T23:59:59.000Z

    July 2001; publishe The cross section for J/c absorption by nucleons is with empirical particle masses, which has been used previousl by pion and r meson. Including both two-body and three-bod of 1 GeV at interaction vertices involving charm hadrons... and is consistent with that extracted from J/c productio DOI: 10.1103/PhysRevC.65.015203 PAC I. INTRODUCTION Two main mechanisms for J/c suppression observed in relativistic heavy ion collisions @1# are the dissociation by the quark-gluon plasma @2...

  20. Section 1705 Loan Program | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO Overview OCHCO OverviewRepository |Complex"Department ofEnergyAwardSection 1705

  1. Section 999: Annual Plans | 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 DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary of Energy Advisory Board FollowSection 3161

  2. Spontaneous Potential (book section) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt LtdShawangunk,Southeast ColoradoOhio: Energy ResourcesSpire(book section) Jump

  3. A generalized polynomial chaos based ensemble Kalman filter with high accuracy

    SciTech Connect (OSTI)

    Li Jia [Department of Mathematics, Purdue University, West Lafayette, IN 47907 (United States); Xiu Dongbin [Department of Mathematics, Purdue University, West Lafayette, IN 47907 (United States)], E-mail: dxiu@math.purdue.edu

    2009-08-20T23:59:59.000Z

    As one of the most adopted sequential data assimilation methods in many areas, especially those involving complex nonlinear dynamics, the ensemble Kalman filter (EnKF) has been under extensive investigation regarding its properties and efficiency. Compared to other variants of the Kalman filter (KF), EnKF is straightforward to implement, as it employs random ensembles to represent solution states. This, however, introduces sampling errors that affect the accuracy of EnKF in a negative manner. Though sampling errors can be easily reduced by using a large number of samples, in practice this is undesirable as each ensemble member is a solution of the system of state equations and can be time consuming to compute for large-scale problems. In this paper we present an efficient EnKF implementation via generalized polynomial chaos (gPC) expansion. The key ingredients of the proposed approach involve (1) solving the system of stochastic state equations via the gPC methodology to gain efficiency; and (2) sampling the gPC approximation of the stochastic solution with an arbitrarily large number of samples, at virtually no additional computational cost, to drastically reduce the sampling errors. The resulting algorithm thus achieves a high accuracy at reduced computational cost, compared to the classical implementations of EnKF. Numerical examples are provided to verify the convergence property and accuracy improvement of the new algorithm. We also prove that for linear systems with Gaussian noise, the first-order gPC Kalman filter method is equivalent to the exact Kalman filter.

  4. Proposed Testing to Assess the Accuracy of Glass-To-Metal Seal Stress Analyses.

    SciTech Connect (OSTI)

    Chambers, Robert S.; Emery, John M; Tandon, Rajan; Antoun, Bonnie R. [Sandia National Laboratories, Livermore, CA; Stavig, Mark E.; Newton, Clay S.; Gibson, Cory S; Bencoe, Denise N.

    2014-09-01T23:59:59.000Z

    The material characterization tests conducted on 304L VAR stainless steel and Schott 8061 glass have provided higher fidelity data for calibration of material models used in Glass - T o - Metal (GTM) seal analyses. Specifically, a Thermo - Multi - Linear Elastic Plastic ( thermo - MLEP) material model has be en defined for S S304L and the Simplified Potential Energy Clock nonlinear visc oelastic model has been calibrated for the S8061 glass. To assess the accuracy of finite element stress analyses of GTM seals, a suite of tests are proposed to provide data for comparison to mo del predictions.

  5. Practical experience in achieving high levels of accuracy in energy simulations of existing buildings

    SciTech Connect (OSTI)

    Waltz, J.P. [Energy Resource Associates, Livermore, CA (United States)

    1995-12-01T23:59:59.000Z

    The computer simulation of existing buildings presents unique problems and opportunities. A high level of accuracy can only be achieved through optimization of three factors: (1) an intimate understanding of the simulation tool; (2) an intimate understanding of the building to be simulated; (3) careful analysis and critique of output data. Optimization of these factors regularly produces computer simulations within 5% of the measured consumption. Examples of the optimization means are provided in this article. The values of computerized simulation in an energy services (ESCO) contract are also discussed.

  6. Comparing Price Forecast Accuracy of Natural Gas Models andFutures Markets

    SciTech Connect (OSTI)

    Wong-Parodi, Gabrielle; Dale, Larry; Lekov, Alex

    2005-06-30T23:59:59.000Z

    The purpose of this article is to compare the accuracy of forecasts for natural gas prices as reported by the Energy Information Administration's Short-Term Energy Outlook (STEO) and the futures market for the period from 1998 to 2003. The analysis tabulates the existing data and develops a statistical comparison of the error between STEO and U.S. wellhead natural gas prices and between Henry Hub and U.S. wellhead spot prices. The results indicate that, on average, Henry Hub is a better predictor of natural gas prices with an average error of 0.23 and a standard deviation of 1.22 than STEO with an average error of -0.52 and a standard deviation of 1.36. This analysis suggests that as the futures market continues to report longer forward prices (currently out to five years), it may be of interest to economic modelers to compare the accuracy of their models to the futures market. The authors would especially like to thank Doug Hale of the Energy Information Administration for supporting and reviewing this work.

  7. A PILOT STUDY OF THE ACCURACY OF CO2 SENSORS IN COMMERCIAL BUILDINGS

    SciTech Connect (OSTI)

    Fisk, William; Fisk, William J.; Faulkner, David; Sullivan, Douglas P.

    2007-09-01T23:59:59.000Z

    Carbon dioxide (CO2) sensors are often deployed in commercial buildings to obtain CO2 data that are used to automatically modulate rates of outdoor air supply. The goal is to keep ventilation rates at or above design requirements and to save energy by avoiding ventilation rates exceeding design requirements. However, there have been many anecdotal reports of poor CO2 sensor performance in actual commercial building applications. This study evaluated the accuracy of 44 CO2 sensors located in nine commercial buildings to determine if CO2 sensor performance, in practice, is generally acceptable or problematic. CO2 measurement errors varied widely and were sometimes hundreds of parts per million. Despite its small size, this study provides a strong indication that the accuracy of CO2 sensors, as they are applied and maintained in commercial buildings, is frequently less than needed to measure typical values of maximum one-hour-average indoor-outdoor CO2 concentration differences with less than a 20percent error. Thus, we conclude that there is a need for more accurate CO2 sensors and/or better sensor maintenance or calibration procedures.

  8. Accuracy and reliability of CEMS at subpart DA (electric utilities) facilities. [Continuous Emission Monitoring Systems

    SciTech Connect (OSTI)

    Walsh, G.; Mans, K.

    1990-03-01T23:59:59.000Z

    EPA promulgated minimum quality assurance (QA) requirements for Continuous Emission Monitoring Systems (CEMS) in 40 CFR Part 60 Appendix F. Appendix F requires Da source owners to develop site-specific QA plans and report the results of EPA specified QA activities each calendar quarter. The first calendar quarter for which a report was to be submitted is January through March 1988. The report of QA activities under Appendix F is called a Data Assessment Report (DAR). The DAR includes identifying and descriptive information for the CEMS, results of periodic audits, identification of periods when calibration drift exceeds specific criteria, identification of periods when the analyzers of CEMS are out of control (OOC), and descriptions of corrective actions in response to OOC conditions. An OOC period occurs when an analyzer or a CEMS fails to meet criteria specified in Appendix F. The criteria are expressed in terms of CEMS relative accuracy, analyzer accuracy, and analyzer drift. The principle objective of the study is an evaluation of the information in DARs for six quarters from January 1988 through June 1989. Secondary study objectives include the establishment of contacts with agency staff who normally receive the DARs each quarter and identification of facilities for which DARs were apparently not received, for follow-up by the appropriate agency.

  9. Placement accuracy gauge for electrical components and method of using same

    DOE Patents [OSTI]

    Biggs, P.M.; Dancer, L.K.; Yerganian, S.S.

    1987-11-12T23:59:59.000Z

    Surface mounted electrical components are typically assembled on printed wiring board by automatic machines. It is important that the machines accurately move with respect to both X and Y rotational axes in order to insure that components are positioned precisely on connector pads of the printed wiring board being assembled. In accordance with the instant invention, a gauge is used to facilitate convenient accuracy checks. The gauge is a glass substrate on which grids of 0.005 inch lines are scribed to form location and orientation fields where components are to be placed. The grids are referenced from ether fiducial marks or the edge of the substrate to establish known positions within the grids. The equipment to be evaluated is programmed to place components in known positions and the components are held in place by tacky adhesive that is sprayed on the substrate prior to placing the components. The accuracy of the component position is then compared to the programmed position by placing the substrate on a light table and observing the component location. If a significant inaccuracy with respect to any of the axes exists, the inaccuracy is apparent because the component is not aligned properly with the grid. If a precise measurement of an axis inaccuracy is desired, a measuring microscope may be utilized. 6 figs.

  10. Placement accuracy gauge for electrical components and method of using same

    DOE Patents [OSTI]

    Biggs, Peter M. (Overland Park, KS); Dancer, Linda K. (Independence, MO); Yerganian, Simon S. (Grandview, MO)

    1988-10-11T23:59:59.000Z

    Surface mounted electrical components are typically assembled on printed wiring boards by automatic machines. It is important that the machines accurately move with respect to both X and Y rotational axes in order to insure that components are positioned precisely on connector pads of the printed wiring board being assembled. In accordance with the instant invention, a gauge is used to facilitate convenient accuracy checks. The gauge is a glass substrate on which grids of 0.005 inch lines are scribed to form location and orientation fields where components are to be placed. The grids are referenced from either fiducial marks or the edge of the substrate to establish known positions within the grids. The equipment to be evaluated is programmed to place components in known positions and the components are held in place by tacky adhesive that is sprayed on the substrate prior to placing the components. The accuracy of the component position is then compared to the programmed position by placing the substrate on a light table and observing the component location. If a significant inaccuracy with respect to any of the axes exists, the inaccuracy is apparent because the component is not aligned properly with the grid. If a precise measurement of an axis inaccuracy is desired, a measuring microscope may be utilized.

  11. August 2004 Radiation Safety Manual Section 5 -Training

    E-Print Network [OSTI]

    Wilcock, William

    August 2004 Radiation Safety Manual Section 5 - Training UW Environmental Health and Safety Page 5-1 Section 5 Radiation Safety Training Contents A. Individuals Directly Using Radioactive Materials..........................................5-1 1. Regulations for Training.................................................................. 5

  12. SECTION 340 WRDA 1992, AS AMENDED ENVIRONMENTAL INFRASTRUCTURE

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED ENVIRONMENTAL INFRASTRUCTURE SOUTHERN WEST VIRGINIA MODEL for the provision of environmental assistance to non-Federal interests in southern West Virginia pursuant to Section

  13. SECTION 340 WRDA 1992, AS AMENDED ENVIRONMENTAL INFRASTRUCTURE

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED ENVIRONMENTAL INFRASTRUCTURE SOUTHERN WEST VIRGINIA MODEL of environmental assistance to non-Federal interests in southern West Virginia pursuant to Section 340 of the Water

  14. SECTION 340 WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA MODEL AGREEMENT FOR DESIGN ASSISTANCE-Federal interests in southern West Virginia pursuant to Section 340 of the Water Resources Development Act of 1992

  15. SECTION 571 WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 571 ­ WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA MODEL AGREEMENT FOR CONSTRUCTION West Virginia pursuant to Section 571 of the Water Resources Development Act of 1999, Public Law 106

  16. SECTION 340 WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA MODEL AGREEMENT FOR CONSTRUCTION West Virginia pursuant to Section 340 of the Water Resources Development Act of 1992, Public Law 102

  17. SECTION 340 WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA MODEL AGREEMENT FOR DESIGN ASSISTANCE for providing environmental assistance to non-Federal interests in southern West Virginia pursuant to Section

  18. SECTION 340 WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA MODEL AGREEMENT FOR DESIGN-Federal interests in southern West Virginia pursuant to Section 340 of the Water Resources Development Act of 1992

  19. SECTION 571 WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 571 ­ WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA MODEL AGREEMENT FOR DESIGN ASSISTANCE assistance to non-Federal interests in central West Virginia pursuant to Section 571 of the Water Resources

  20. SECTION 571 WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 571 ­ WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA MODEL AGREEMENT FOR DESIGN-Federal interests in central West Virginia pursuant to Section 571 of the Water Resources Development Act of 1999

  1. SECTION 571 WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 571 ­ WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA MODEL AGREEMENT FOR CONSTRUCTION environmental assistance to non-Federal interests in central West Virginia pursuant to Section 571 of the Water

  2. Public Comment re Section 934 of the Energy Independence and...

    Energy Savers [EERE]

    Section 934 of the Energy Independence and Security Act of 2007 Public Comment re Section 934 of the Energy Independence and Security Act of 2007 Public Comment by the Uranium...

  3. http://health.usf.edu/publichealth/ SECTION 21

    E-Print Network [OSTI]

    Meyers, Steven D.

    Management Conc. 12/17/12 Revise GRE for concentrations: Health Care Organizations and Management 702 http://health.usf.edu/publichealth/ SECTION 21 CCOOLLLLEEGGEE OOFF PPUUBBLLIICC HHEEAALLTTHH #12;USF Tampa Graduate Catalog 20132014 Section 21 College of Public Health

  4. SECTION 593 WRDA 1999, AS AMENDED CENTRAL NEW MEXICO

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 593 ­ WRDA 1999, AS AMENDED CENTRAL NEW MEXICO MODEL AGREEMENT FOR DESIGN ASSISTANCE (WORK New Mexico pursuant to Section 593 of the Water Resources Development Act of 1999, Public Law 106

  5. Apparatus for sectioning demountable semiconductor samples

    DOE Patents [OSTI]

    Sopori, Bhushan L. (Scottsdale, AZ); Wolf, Abraham (Sun City West, AZ)

    1984-01-01T23:59:59.000Z

    Apparatus for use during polishing and sectioning operations of a ribbon sample is described. The sample holder includes a cylinder having an axially extending sample cavity terminated in a first funnel-shaped opening and a second slot-like opening. A spring-loaded pressure plunger is located adjacent the second opening of the sample cavity for frictional engagement of the sample prior to introduction of a molding medium in the sample cavity. A heat softenable molding medium is inserted in the funnel-shaped opening, to surround the sample. After polishing, the heater is energized to allow draining of the molding medium from the sample cavity. During manual polishing, the second end of the sample holder is inserted in a support ring which provides mechanical support as well as alignment of the sample holder during polishing. A gauge block for measuring the protrusion of a sample beyond the second wall of the holder is also disclosed.

  6. U.S. DEPARTMENT OF ENERGY Records Contact Appointment SECTION...

    Office of Environmental Management (EM)

    ENERGY Records Contact Appointment SECTION I. Appointment Pursuant to DOE Order 243.1B, Records Management Program, (Name) ...

  7. Estimation of charm production cross section in hadronic interactions at high energies

    E-Print Network [OSTI]

    G. M. Vereshkov; Yu. F. Novoseltsev

    2004-04-24T23:59:59.000Z

    Results of processing experimental data on charm production in hadron-hadron interactions are presented. The analysis is carried out within the frame of phenomenological model of diffraction production and quark statistics based on additive quark model (AQM). In low energy region sqrt s = 20 - 40GeV, the cross sections si_ {pN to c bar cX} (s), si_ {pi N to c bar cX} (s) are fitted by logarithmic function with the parameters connected by relationship of AQM. At collider energies 200, 540, 900, 1800 GeV, the values of si_{bar pp to c bar cX} (s) were obtained by a quark statistics method from the data on diffraction dissociation. It is established, that logarithmic function with universal numerical parameters describes the whole set of low-energy and high-energy data with high accuracy. The expected values of cross sections are si_{pp to c bar cX} = 250 pm 40 mu b and 355 pm 57 mu b at TEVATRON energy sqrt {s} = 1.96 TeV and LHC energy sqrt {s} = 14 TeV accordingly. Opportunities of use of the obtained results for calibration of a flux of "prompt" muons in high-energy component of cosmic rays are discussed.

  8. Math 13700 Assignment Sheet Spring 2010 Lesson Section Page ...

    E-Print Network [OSTI]

    rroames

    2010-01-04T23:59:59.000Z

    Read pp 44-45, section 2.5. 7. 3.1 p 51 ... __ Read pp 92-93, section 4.2. 14 ... 1, 4, 5, 6, 8bcd, 9bcd, 12, 13, 17, 21fghij Read pp 196-197, section 9.4. 28.

  9. SECTION 593 WRDA 1999, AS AMENDED CENTRAL NEW MEXICO

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 593 ­ WRDA 1999, AS AMENDED CENTRAL NEW MEXICO MODEL AGREEMENT FOR DESIGN AND CONSTRUCTION-Federal interests in central New Mexico pursuant to Section 593 of the Water Resources Development Act of 1999") and Section 401 of the Federal Water Pollution Control Act (33 U.S.C. 1341). Compliance with all applicable

  10. SECTION 593 WRDA 1999, AS AMENDED CENTRAL NEW MEXICO

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 593 ­ WRDA 1999, AS AMENDED CENTRAL NEW MEXICO MODEL AGREEMENT FOR CONSTRUCTION ASSISTANCE New Mexico pursuant to Section 593 of the Water Resources Development Act of 1999, Public Law 106, NEPA and Section 401 of the Federal Water Pollution Control Act (33 U.S.C. 1341). #12;

  11. TXSAMC (transport cross sections from applied Monte Carlo): a new tool for generating shielded multigroup cross sections 

    E-Print Network [OSTI]

    Hiatt, Matthew Torgerson

    2009-06-02T23:59:59.000Z

    This thesis describes a tool called TXSAMC (Transport Cross Sections from Applied Monte Carlo) that produces shielded and homogenized multigroup cross sections for small fast reactor systems. The motivation for this tool comes from a desire...

  12. Comparisons in economy between constant section and varying section continuous steel girders in H-15 highway bridges

    E-Print Network [OSTI]

    Furr, Howard L.

    1948-01-01T23:59:59.000Z

    , k-15 eguivalent lane loading was used in the analysis. Girder design wms confined to interior girders, end the design was based on bending moment analyses only. Continuous girders of standard constant section and of rein" orced section were...

  13. Automated Algorithms for Quantum-Level Accuracy in Atomistic Simulations: LDRD Final Report.

    SciTech Connect (OSTI)

    Thompson, Aidan P.; Schultz, Peter A.; Crozier, Paul; Moore, Stan Gerald; Swiler, Laura Painton; Stephens, John Adam; Trott, Christian Robert; Foiles, Stephen M.; Tucker, Garritt J. (Drexel University)

    2014-09-01T23:59:59.000Z

    This report summarizes the result of LDRD project 12-0395, titled %22Automated Algorithms for Quantum-level Accuracy in Atomistic Simulations.%22 During the course of this LDRD, we have developed an interatomic potential for solids and liquids called Spectral Neighbor Analysis Poten- tial (SNAP). The SNAP potential has a very general form and uses machine-learning techniques to reproduce the energies, forces, and stress tensors of a large set of small configurations of atoms, which are obtained using high-accuracy quantum electronic structure (QM) calculations. The local environment of each atom is characterized by a set of bispectrum components of the local neighbor density projected on to a basis of hyperspherical harmonics in four dimensions. The SNAP coef- ficients are determined using weighted least-squares linear regression against the full QM training set. This allows the SNAP potential to be fit in a robust, automated manner to large QM data sets using many bispectrum components. The calculation of the bispectrum components and the SNAP potential are implemented in the LAMMPS parallel molecular dynamics code. Global optimization methods in the DAKOTA software package are used to seek out good choices of hyperparameters that define the overall structure of the SNAP potential. FitSnap.py, a Python-based software pack- age interfacing to both LAMMPS and DAKOTA is used to formulate the linear regression problem, solve it, and analyze the accuracy of the resultant SNAP potential. We describe a SNAP potential for tantalum that accurately reproduces a variety of solid and liquid properties. Most significantly, in contrast to existing tantalum potentials, SNAP correctly predicts the Peierls barrier for screw dislocation motion. We also present results from SNAP potentials generated for indium phosphide (InP) and silica (SiO 2 ). We describe efficient algorithms for calculating SNAP forces and energies in molecular dynamics simulations using massively parallel computers and advanced processor ar- chitectures. Finally, we briefly describe the MSM method for efficient calculation of electrostatic interactions on massively parallel computers.

  14. Section 8-1 8-4: Statistical Process Control (SPC) Section 8-5: SPC for Individual Measurements Section 8-6: Process Capacity Math/Stat 370: Engineering Statistics

    E-Print Network [OSTI]

    Li, Haijun

    Section 8-1 8-4: Statistical Process Control (SPC) Section 8-5: SPC for Individual Measurements-13 1 / 24 #12;Section 8-1 8-4: Statistical Process Control (SPC) Section 8-5: SPC for Individual: Engineering Statistics Week 12-13 2 / 24 #12;Section 8-1 8-4: Statistical Process Control (SPC) Section 8

  15. Determination of accuracy of measurements by NREL`s Scanning Hartmann Optical Test instrument

    SciTech Connect (OSTI)

    Jorgensen, G.; Wendelin, T.; Carasso, M.

    1991-04-01T23:59:59.000Z

    NREL`s Scanning Hartmann Optical Test (SHOT) instrument is routinely used to characterize the surface of candidate dish concentration elements for solar thermal applications. An approach was devised to quantify the accuracy of these measurements. Excellent reproducibility was exhibited and high confidence established. The SHOT instrument was designed to allow the surface figure of large optical test articles to be accurately specified. Such test articles are nominally parabolic with an f/D ratio (in which f=focal length and D=aperture diameter) in the range of 0.5--1.0. Recent modifications of SHOT have extended the characterization range out to about f/D=3.0. A series of experiments was designed to investigate and quantify the uncertainties associated with optical characterization performed by SHOT. This approach involved making a series of measurements with an arbitrary test article positioned at a number of locations transverse to the optical axis of SHOT. 3 refs.

  16. Determination of accuracy of measurements by NREL's Scanning Hartmann Optical Test instrument

    SciTech Connect (OSTI)

    Jorgensen, G.; Wendelin, T.; Carasso, M.

    1991-04-01T23:59:59.000Z

    NREL's Scanning Hartmann Optical Test (SHOT) instrument is routinely used to characterize the surface of candidate dish concentration elements for solar thermal applications. An approach was devised to quantify the accuracy of these measurements. Excellent reproducibility was exhibited and high confidence established. The SHOT instrument was designed to allow the surface figure of large optical test articles to be accurately specified. Such test articles are nominally parabolic with an f/D ratio (in which f=focal length and D=aperture diameter) in the range of 0.5--1.0. Recent modifications of SHOT have extended the characterization range out to about f/D=3.0. A series of experiments was designed to investigate and quantify the uncertainties associated with optical characterization performed by SHOT. This approach involved making a series of measurements with an arbitrary test article positioned at a number of locations transverse to the optical axis of SHOT. 3 refs.

  17. Thermodynamics of accuracy in kinetic proofreading: Dissipation and efficiency trade-offs

    E-Print Network [OSTI]

    Riccardo Rao; Luca Peliti

    2015-04-09T23:59:59.000Z

    The high accuracy exhibited by biological information transcription processes is due to kinetic proofreading, i.e., by a mechanism which reduces the error rate of the information-handling process by driving it out of equilibrium. We provide a consistent thermodynamic description of enzyme-assisted assembly processes involving competing substrates, in a Master Equation framework. We introduce and evaluate a measure of the efficiency based on rigorous non-equilibrium inequalities. The performance of several proofreading models are thus analyzed and the related time, dissipation and efficiency vs. error trade-offs exhibited for different discrimination regimes. We finally introduce and analyze in the same framework a simple model which takes into account correlations between consecutive enzyme-assisted assembly steps. This work highlights the relevance of the distinction between energetic and kinetic discrimination regimes in enzyme-substrate interactions.

  18. Thermodynamics of accuracy in kinetic proofreading: Dissipation and efficiency trade-offs

    E-Print Network [OSTI]

    Rao, Riccardo

    2015-01-01T23:59:59.000Z

    The high accuracy exhibited by biological information transcription processes is due to kinetic proofreading, i.e., by a mechanism which reduces the error rate of the information-handling process by driving it out of equilibrium. We provide a consistent thermodynamic description of enzyme-assisted assembly processes involving competing substrates, in a Master Equation framework. We introduce and evaluate a measure of the efficiency based on rigorous non-equilibrium inequalities. The performance of several proofreading models are thus analyzed and the related time, dissipation and efficiency vs. error trade-offs exhibited for different discrimination regimes. We finally introduce and analyze in the same framework a simple model which takes into account correlations between consecutive enzyme-assisted assembly steps. This work highlights the relevance of the distinction between energetic and kinetic discrimination regimes in enzyme-substrate interactions.

  19. Accuracy of teleseismic event locations in the Middle East and North Africa

    SciTech Connect (OSTI)

    Sweeney, J.J.

    1996-12-04T23:59:59.000Z

    Seismic characterization at the regional level requires accurate determination of phases and travel times for many combinations of stations and events. An important consideration in the process is the accuracy of event locations. The LLNL Comprehensive Test Ban Treaty Research Program is currently working on data from the Middle East and North Africa, where seismic station coverage is relatively sparse and ``ground truth`` seismic source information is practically nonexistent. In this report the investigator use after shock studies as a source of local ground truth. He evaluates teleseismic location accuracy by comparing hypocenters determined by local networks with those determined teleseismically [e.g. the International Seismological Center (ISC) and the National Earthquake Information Center (NEIC)]. Epicentral locations, origin times, and depth determinations of events from three aftershocks studies (Algeria, Armenia, and Iran) and one local network study (Iran) are compared with ISC and NEIC locations for the same events. The key parameter for the ISC locations is the number of observations used in the location determination. For more than 40-50 observations, the agreement rapidly diminishes and ISC locations can differ from local determinations by as much as 80 km or more. Events in Iran show a distinct bias of ISC location errors toward the northeast; events in Armenia and Algeria show no directional bias. This study shows that only events with ISC M{sub b} {gt} 4.4-4.5 or NEIS M{sub b} {gt} 4.7-4. should be used for compiling travel time information from teleseismic bulletins in the Middle East/North Africa region when locations from the NEIC and ISC bulletins are used.

  20. Apparatus and methods for installing, removing and adjusting an inner turbine shell section relative to an outer turbine shell section

    DOE Patents [OSTI]

    Leach, David (Niskayuna, NY); Bergendahl, Peter Allen (Scotia, NY); Waldo, Stuart Forrest (Salem, NC); Smith, Robert Leroy (Milford, OH); Phelps, Robert Kim (Milford, OH)

    2001-01-01T23:59:59.000Z

    A turbine includes upper and lower inner shell sections mounting the nozzles and shrouds and which inner shell is supported by pins secured to a surrounding outer shell. To disassemble the turbine for access to the inner shell sections and rotor, an alignment fixture is secured to the lower outer shell section and has pins engaging the inner shell section. To disassemble the turbine, the inner shell weight is transferred to the lower outer shell section via the alignment fixture and cradle pins. Roller assemblies are inserted through access openings vacated by support pins to permit rotation of the lower inner shell section out of and into the lower outer shell section during disassembly and assembly. The alignment fixture includes adjusting rods for adjusting the inner shell axially, vertically, laterally and about a lateral axis. A roller over-cage is provided to rotate the inner shell and a dummy shell to facilitate assembly and disassembly in the field.

  1. METAL MEDIA FILTERS, AG-1 SECTION FI

    SciTech Connect (OSTI)

    Adamson, D.

    2012-05-23T23:59:59.000Z

    One application of metal media filters is in various nuclear air cleaning processes including applications for protecting workers, the public and the environment from hazardous and radioactive particles. To support this application the development of the ASME AG-1 FI Standard on Metal Media has been under way for more than ten years. Development of the proposed section has required resolving several difficult issues associated with operating conditions (media velocity, pressure drop, etc.), qualification testing, and quality acceptance testing. Performance characteristics of metal media are dramatically different than the glass fiber media with respect to parameters like differential pressures, operating temperatures, media strength, etc. These differences make existing data for a glass fiber media inadequate for qualifying a metal media filter for AG-1. In the past much work has been conducted on metal media filters at facilities such as Lawrence Livermore National Laboratory (LLNL) and Savannah River National Laboratory (SRNL) to qualify the media as High Efficiency Particulate Air (HEPA) Filters. Particle retention testing has been conducted at Oak Ridge Filter Test Facility and at Air Techniques International (ATI) to prove that the metal media meets or exceeds the 99.97% particle retention required for a HEPA Filter. Even with his testing, data was lacking to complete an AG-1 FI Standard on metal media. With funding secured by Mississippi State University (MSU) from National Nuclear Security Administration (NNSA), a research test stand is being designed and fabricated at MSU's Institute for Clean Energy Technology (ICET) Facility to obtain qualification data on metal media. This in turn will support required data needed for the FI Standard. The paper will discuss in detail how the test stand at MSU will obtain the necessary data to complete the FI Standard.

  2. Deep in Data: Empirical Data Based Software Accuracy Testing Using the Building America Field Data Repository: Preprint

    SciTech Connect (OSTI)

    Neymark, J.; Roberts, D.

    2013-06-01T23:59:59.000Z

    An opportunity is available for using home energy consumption and building description data to develop a standardized accuracy test for residential energy analysis tools. That is, to test the ability of uncalibrated simulations to match real utility bills. Empirical data collected from around the United States have been translated into a uniform Home Performance Extensible Markup Language format that may enable software developers to create translators to their input schemes for efficient access to the data. This may facilitate the possibility of modeling many homes expediently, and thus implementing software accuracy test cases by applying the translated data. This paper describes progress toward, and issues related to, developing a usable, standardized, empirical data-based software accuracy test suite.

  3. Accuracy Test for Link Prediction in terms of Similarity Index: The Case of WS and BA Models

    E-Print Network [OSTI]

    Ahn, Min-Woo

    2015-01-01T23:59:59.000Z

    Link prediction is a technique that uses the topological information in a given network to infer the missing links in it. Since past research on link prediction has primarily focused on enhancing performance for given empirical systems, negligible attention has been devoted to link prediction with regard to network models. In this paper, we thus apply link prediction to two network models: The Watts-Strogatz (WS) model and Barab\\'asi-Albert (BA) model. We attempt to gain a better understanding of the relation between accuracy and each network parameter (mean degree, the number of nodes and the rewiring probability in the WS model) through network models. Six similarity indices are used, with precision and area under the ROC curve (AUC) value as the accuracy metrics. We observe a positive correlation between mean degree and accuracy, and size independence of the AUC value.

  4. Nonlinear acoustic waves in channels with variable cross sections

    E-Print Network [OSTI]

    Vladimir F. Kovalev; Oleg V. Rudenko

    2012-11-02T23:59:59.000Z

    The point symmetry group is studied for the generalized Webster-type equation describing non-linear acoustic waves in lossy channels with variable cross sections. It is shown that, for certain types of cross section profiles, the admitted symmetry group is extended and the invariant solutions corresponding to these profiles are obtained. Approximate analytic solutions to the generalized Webster equation are derived for channels with smoothly varying cross sections and arbitrary initial conditions.

  5. Total neutron-nucleus cross sections and color transparency

    SciTech Connect (OSTI)

    Jennings, B.K. (TRIUMF, Vancouver, V6T2A3 (Canada)); Miller, G.A. (Nuclear Theory Group, Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States))

    1994-05-01T23:59:59.000Z

    The neutron-nucleus cross section at Fermi lab energies is computed using Glauber-Gribov multiple scattering theory. The effects of higher moments in the cross section fluctuations are included and their physical origin discussed. The validity of the frozen approximation is critically examined. These studies of the nucleon-nucleus total cross sections provide a test of the [ital pp][r arrow][ital Xp] diffractive amplitudes used in calculations of color transparency effects.

  6. A simple reform for treating the loss of accuracy of Humlicek's W4 algorithm near the real axis

    E-Print Network [OSTI]

    Zaghloul, Mofreh R

    2015-01-01T23:59:59.000Z

    We present a simple reform for treating the reported problem of loss-of-accuracy near the real axis of Humlicek's w4 algorithm, widely used for the calculation of the Faddeyeva or complex probability function. The reformed routine maintains the claimed accuracy of the algorithm over a wide and fine grid that covers all the domain of the real part, x, of the complex input variable, z=x+iy, and values for the imaginary part in the range y=[10-30, 10+30

  7. Comparing the accuracy of machine classified landsat imagery to manually delineated aerial photographs for county appraisal district use

    E-Print Network [OSTI]

    Falter, Matthew Palmer

    1995-01-01T23:59:59.000Z

    interpretation Class 41 (Hardwood) 42 (Evergreen) 43 (Mixed) 76 (Nonforested) Points 16 123 87 19 Percent of Total points 6. 53 50. 20 35. 51 7. 76 21 RESULTS Chester Quadrangle Map Area The accuracy of the classifications done on the Chester... Correct' 15 42 18 56 36 21 131 42. 7 23 15 65 35. 4 76 10 22 44 50. 0 Total Percent. Correct' 25 4. 0 100 56. 0 70 32. 9 60 36. 7 40. 0 'considering only omission errors 'considering only commission errors 'overall classification accuracy...

  8. Consistency Testing of the IRDF-2002 Dosimetry Cross Section Library

    SciTech Connect (OSTI)

    Griffin, P.J. [Nuclear Technologies Department, Sandia National Laboratories, Albuquerque, NM 87185-1146 (United States)

    2005-05-24T23:59:59.000Z

    The new IRDF-2002 dosimetry cross-section library was completed by the IAEA in January 2004. A rigorous process was followed in the selection of the recommended dosimetry cross sections. The cross-section selection was followed with a consistency testing. This paper reports on the results of the consistency testing. All candidate selections passed the acceptance testing criteria and the library release is pending. Observations are made on areas that need improvement in the cross sections and in the scope of the consistency testing.

  9. Response to Comments Regarding EPAct 2005 Section 242: October...

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

    that were received in regards to a revised draft of the EPAct 2005 Section 242 "Hydroelectric Incentive Program" Application Guidance that was released on October 20, 2014....

  10. Positive Scattering Cross Sections using Constrained Least Squares

    SciTech Connect (OSTI)

    Dahl, J.A.; Ganapol, B.D.; Morel, J.E.

    1999-09-27T23:59:59.000Z

    A method which creates a positive Legendre expansion from truncated Legendre cross section libraries is presented. The cross section moments of order two and greater are modified by a constrained least squares algorithm, subject to the constraints that the zeroth and first moments remain constant, and that the standard discrete ordinate scattering matrix is positive. A method using the maximum entropy representation of the cross section which reduces the error of these modified moments is also presented. These methods are implemented in PARTISN, and numerical results from a transport calculation using highly anisotropic scattering cross sections with the exponential discontinuous spatial scheme is presented.

  11. Higgs Boson Fiducial Cross Sections and Differential Distributions

    E-Print Network [OSTI]

    Gao, Yanyan; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    In this talk we present the fiducial cross-section measurements and the differential distributions of the Higgs boson, in the ZZ->4l and gamma gamma channels.

  12. Alaska Administrative Code - Title 15, Chapter 15, Section 901...

    Open Energy Info (EERE)

    Code - Title 15, Chapter 15, Section 901 - DefinitionsLegal Abstract This regulation contains definitions pertaining to entities that qualify as "utilities." Published...

  13. EISA Section 432: Federal Facility Management and Benchmarking Requirements

    Broader source: Energy.gov [DOE]

    The Federal Energy Management Program is responsible for tracking Federal agency progress toward meeting Section 432 of the Energy Independence and Security Act of 2007.

  14. anatomy cross-sectional: Topics by E-print Network

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

    Astrophysics (arXiv) Summary: We review and analyze the available information for nuclear fusion cross sections that are most important for solar energy generation and...

  15. annual cross sectional: Topics by E-print Network

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

    Astrophysics (arXiv) Summary: We review and analyze the available information for nuclear fusion cross sections that are most important for solar energy generation and...

  16. adjusted cross section: Topics by E-print Network

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

    Astrophysics (arXiv) Summary: We review and analyze the available information for nuclear fusion cross sections that are most important for solar energy generation and...

  17. anatomic cross sections: Topics by E-print Network

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

    Astrophysics (arXiv) Summary: We review and analyze the available information for nuclear fusion cross sections that are most important for solar energy generation and...

  18. arbitrary cross section: Topics by E-print Network

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

    Astrophysics (arXiv) Summary: We review and analyze the available information for nuclear fusion cross sections that are most important for solar energy generation and...

  19. attenuation cross sections: Topics by E-print Network

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

    Astrophysics (arXiv) Summary: We review and analyze the available information for nuclear fusion cross sections that are most important for solar energy generation and...

  20. aviation cross sectional: Topics by E-print Network

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

    Astrophysics (arXiv) Summary: We review and analyze the available information for nuclear fusion cross sections that are most important for solar energy generation and...

  1. abrasion cross sections: Topics by E-print Network

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

    Astrophysics (arXiv) Summary: We review and analyze the available information for nuclear fusion cross sections that are most important for solar energy generation and...

  2. arbitrary cross sections: Topics by E-print Network

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

    Astrophysics (arXiv) Summary: We review and analyze the available information for nuclear fusion cross sections that are most important for solar energy generation and...

  3. anniversary cross section: Topics by E-print Network

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

    Astrophysics (arXiv) Summary: We review and analyze the available information for nuclear fusion cross sections that are most important for solar energy generation and...

  4. Section E: Procedures Recruitment and Inquiries............................................................................................. E1

    E-Print Network [OSTI]

    Hart, Gus

    Section E: Procedures Recruitment and Inquiries............................................................................................. E1 Recruitment Responsibilities......................................................................................................E ..............................................................................................E1 Instructions for Searching and Adding Prospective Applicant Information to EMT Connect......E1

  5. Methods for studying the accuracy of light propagation in N-body simulations

    E-Print Network [OSTI]

    S. M. Koksbang; S. Hannestad

    2015-02-15T23:59:59.000Z

    It is proposed to use exact, cosmologically relevant solutions to Einstein's equations to accurately quantify the precision of ray tracing techniques through Newtonian N-body simulations. As an initial example of such a study, the recipe in (Green & Wald, 2012) for going between N-body results and a perturbed FLRW metric in the Newtonian gauge is used to study light propagation through quasi-spherical Szekeres models. The study is conducted by deriving a set of ODEs giving an expression for the angular diameter distance in the Newtonian gauge metric. The accuracy of the results obtained from the ODEs is estimated by using the ODEs to determine the distance-redshift relation in mock N-body data based on quasi-spherical Szekeres models. The results are then compared to the exact relations. From this comparison it is seen that the obtained ODEs can accurately reproduce the distance-redshift relation along both radial and non-radial geodesics in spherically symmetric models. The reproduction of geodesics in non-symmetric Szekeres models is slightly less accurate, but still good. These results indicate that the employment of perturbed FLRW metrics for standard ray tracing techniques yields fairly accurate results, at least regarding distance-redshift relations. It is possible though, that this conclusion will be rendered invalid if other typical ray tracing approximations are included and if light is allowed to travel through several structures instead of just one.

  6. Methods for studying the accuracy of light propagation in N-body simulations

    E-Print Network [OSTI]

    Koksbang, S M

    2015-01-01T23:59:59.000Z

    It is proposed to use exact, cosmologically relevant solutions to Einstein's equations to accurately quantify the precision of ray tracing techniques through Newtonian N-body simulations. As an initial example of such a study, the recipe in (Green & Wald, 2012) for going between N-body results and a perturbed FLRW metric in the Newtonian gauge is used to study light propagation through quasi-spherical Szekeres models. The study is conducted by deriving a set of ODEs giving an expression for the angular diameter distance in the Newtonian gauge metric. The accuracy of the results obtained from the ODEs is estimated by using the ODEs to determine the distance-redshift relation in mock N-body data based on quasi-spherical Szekeres models. The results are then compared to the exact relations. From this comparison it is seen that the obtained ODEs can accurately reproduce the distance-redshift relation along both radial and non-radial geodesics in spherically symmetric models. The reproduction of geodesics in n...

  7. Quantum resistance standard accuracy close to the zero-dissipation state

    SciTech Connect (OSTI)

    Schopfer, F.; Poirier, W. [Laboratoire National de métrologie et d'Essais (LNE), 29 avenue Roger Hennequin, 78197 Trappes (France)] [Laboratoire National de métrologie et d'Essais (LNE), 29 avenue Roger Hennequin, 78197 Trappes (France)

    2013-08-14T23:59:59.000Z

    We report on a comparison of four GaAs/AlGaAs-based quantum resistance standards using an original technique adapted from the well-known Wheatstone bridge. This work shows that the quantized Hall resistance at Landau level filling factor ?=2 can be reproducible with a relative uncertainty of 32×10{sup ?12} in the dissipationless limit of the quantum Hall effect regime. In the presence of a very small dissipation characterized by a mean macroscopic longitudinal resistivity R{sub xx}(B) of a few ??, the discrepancy ?R{sub H}(B) between quantum Hall resistors measured on the Hall plateau at magnetic induction B turns out to follow the so-called resistivity rule R{sub xx}(B)=?B×d(?R{sub H}(B))/dB. While the dissipation increases with the measurement current value, the coefficient ? stays constant in the range investigated (40?120 ?A). This result enlightens the impact of the dissipation emergence in the two-dimensional electron gas on the Hall resistance quantization, which is of major interest for the resistance metrology. The quantum Hall effect is used to realize a universal resistance standard only linked to the electron charge e and the Planck constant h and it is known to play a central role in the upcoming revised Système International of units. There are therefore fundamental and practical benefits in testing the reproducibility property of the quantum Hall effect with better and better accuracy.

  8. Cross Sections for Inner-Shell Ionization by Electron Impact

    SciTech Connect (OSTI)

    Llovet, Xavier, E-mail: xavier@ccit.ub.edu [Centres Científics i Tecnològics, Universitat de Barcelona, Lluís Solé i Sabarís 1-3, 08028 Barcelona (Spain)] [Centres Científics i Tecnològics, Universitat de Barcelona, Lluís Solé i Sabarís 1-3, 08028 Barcelona (Spain); Powell, Cedric J. [Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8370 (United States)] [Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8370 (United States); Salvat, Francesc [Facultat de Física (ECM and ICC), Universitat de Barcelona, Diagonal 645, 08028 Barcelona (Spain)] [Facultat de Física (ECM and ICC), Universitat de Barcelona, Diagonal 645, 08028 Barcelona (Spain); Jablonski, Aleksander [Institute of Physical Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44/52, 01-224 Warsaw (Poland)] [Institute of Physical Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44/52, 01-224 Warsaw (Poland)

    2014-03-15T23:59:59.000Z

    An analysis is presented of measured and calculated cross sections for inner-shell ionization by electron impact. We describe the essentials of classical and semiclassical models and of quantum approximations for computing ionization cross sections. The emphasis is on the recent formulation of the distorted-wave Born approximation by Bote and Salvat [Phys. Rev. A 77, 042701 (2008)] that has been used to generate an extensive database of cross sections for the ionization of the K shell and the L and M subshells of all elements from hydrogen to einsteinium (Z = 1 to Z = 99) by electrons and positrons with kinetic energies up to 1 GeV. We describe a systematic method for evaluating cross sections for emission of x rays and Auger electrons based on atomic transition probabilities from the Evaluated Atomic Data Library of Perkins et al. [Lawrence Livermore National Laboratory, UCRL-ID-50400, 1991]. We made an extensive comparison of measured K-shell, L-subshell, and M-subshell ionization cross sections and of L? x-ray production cross sections with the corresponding calculated cross sections. We identified elements for which there were at least three (for K shells) or two (for L and M subshells) mutually consistent sets of cross-section measurements and for which the cross sections varied with energy as expected by theory. The overall average root-mean-square deviation between the measured and calculated cross sections was 10.9% and the overall average deviation was ?2.5%. This degree of agreement between measured and calculated ionization and x-ray production cross sections was considered to be very satisfactory given the difficulties of these measurements.

  9. On the Accuracy and Simplifications of Battery Models using In Situ Measurements of Lithium Concentration in Operational Cells

    E-Print Network [OSTI]

    Stefanopoulou, Anna

    On the Accuracy and Simplifications of Battery Models using In Situ Measurements of Lithium the Lithium concentration in an operating Lithium Iron Phosphate (LFP) pouch cell battery with typical. INTRODUCTION Accurate estimates of Lithium Ion Battery State of Charge (SOC) are critical for constraining

  10. Numerical Stability and Accuracy of Temporally Coupled Multi-Physics Modules in Wind-Turbine CAE Tools

    SciTech Connect (OSTI)

    Gasmi, A.; Sprague, M. A.; Jonkman, J. M.; Jones, W. B.

    2013-02-01T23:59:59.000Z

    In this paper we examine the stability and accuracy of numerical algorithms for coupling time-dependent multi-physics modules relevant to computer-aided engineering (CAE) of wind turbines. This work is motivated by an in-progress major revision of FAST, the National Renewable Energy Laboratory's (NREL's) premier aero-elastic CAE simulation tool. We employ two simple examples as test systems, while algorithm descriptions are kept general. Coupled-system governing equations are framed in monolithic and partitioned representations as differential-algebraic equations. Explicit and implicit loose partition coupling is examined. In explicit coupling, partitions are advanced in time from known information. In implicit coupling, there is dependence on other-partition data at the next time step; coupling is accomplished through a predictor-corrector (PC) approach. Numerical time integration of coupled ordinary-differential equations (ODEs) is accomplished with one of three, fourth-order fixed-time-increment methods: Runge-Kutta (RK), Adams-Bashforth (AB), and Adams-Bashforth-Moulton (ABM). Through numerical experiments it is shown that explicit coupling can be dramatically less stable and less accurate than simulations performed with the monolithic system. However, PC implicit coupling restored stability and fourth-order accuracy for ABM; only second-order accuracy was achieved with RK integration. For systems without constraints, explicit time integration with AB and explicit loose coupling exhibited desired accuracy and stability.

  11. Confirming Diagnosis of Hazardous and Harmful Alcohol Use Diagnostic accuracy of a computer assisted diagnostic system compared to conventional

    E-Print Network [OSTI]

    van Lambalgen, Michiel

    1 TITLE PAGE Confirming Diagnosis of Hazardous and Harmful Alcohol Use Diagnostic accuracy for alcoholism have good screening properties for detecting hazardous and harmful alcohol use (HHAU Test (BAT) for confirming the diagnosis of hazardous and harmful alcohol use. Design and Subjects BAT

  12. Confirming Diagnosis of Hazardous and Harmful Alcohol Use Diagnostic accuracy of a computer assisted diagnostic system compared to conventional

    E-Print Network [OSTI]

    van Lambalgen, Michiel

    1 TITLE PAGE Confirming Diagnosis of Hazardous and Harmful Alcohol Use Diagnostic accuracy for alcoholism have good screening properties for detecting hazardous and harmful alcohol use (HHAU Test (BAT) for confirming the diagnosis of hazardous and harmful alcohol use Design and Subjects BAT

  13. New test procedure evaluates quality and accuracy of energy analysis tools for the residential building retrofit market.

    E-Print Network [OSTI]

    New test procedure evaluates quality and accuracy of energy analysis tools for the residential the Building Energy Simulation Test for Existing Homes (BESTEST-EX), a method for diagnosing and correcting physics and utility bill calibration test cases, which soft- ware developers can use to compare

  14. Evaluating the impact of urban morphology configurations on the accuracy of urban canopy model temperature simulations with MODIS

    E-Print Network [OSTI]

    Monaghan, Andrew J.; Hu, Leiqiu; Brunsell, Nathaniel A.; Barlage, Michael; Wilhelmi, Olga V.

    2014-06-09T23:59:59.000Z

    of the urban-built environment within models. Using a 10 year (2003–2012) series of offline 1 km simulations over Greater Houston with the High-Resolution Land Data Assimilation System (HRLDAS), this study explores the model accuracy gained by progressively...

  15. Phase reduction models for improving the accuracy of the finite element solution of time-harmonic scattering problems I: General

    E-Print Network [OSTI]

    Antoine, Xavier - Institut de Mathématiques �lie Cartan, Université Henri Poincaré

    Accepted 12 January 2009 Available online 21 January 2009 Keywords: Helmholtz equation Acoustic scattering Short-wave problem Finite element method Pollution Accuracy On-Surface Radiation Condition method a b- lems in view of a numerical finite element solution. It is well-known that pollution error causes

  16. A Bottom up Approach to on-Road CO2 Emissions Estimates: Improved Spatial Accuracy and Applications for Regional Planning

    E-Print Network [OSTI]

    Hutyra, Lucy R.

    component of vehicle greenhouse gas (GHG) emissions is CO2 generated by the combustion of motor gasoline and diesel fuel. CO2 emissions contribute to global climate change,2 but the United States has yetA Bottom up Approach to on-Road CO2 Emissions Estimates: Improved Spatial Accuracy and Applications

  17. On-Chip Measurement of Data Jitter with Sub-Picosecond Accuracy for 10Gb/s Multilane CDRs

    E-Print Network [OSTI]

    Sheikholeslami, Ali

    On-Chip Measurement of Data Jitter with Sub-Picosecond Accuracy for 10Gb/s Multilane CDRs Joshua. of Electrical Engineering, University of Toronto; 2 Fujitsu Laboratories Limited Abstract On-chip jitter lanes. The RMS jitter of the received data and an estimate of the jitter's power spectral density

  18. Estimation of Absolute Free Energies of Hydration using Continuum Methods: Accuracy of Partial Charge Models and Optimization of Nonpolar Contributions

    E-Print Network [OSTI]

    Rizzo, Robert C.

    Estimation of Absolute Free Energies of Hydration using Continuum Methods: Accuracy of Partial, and Irwin D. Kuntz Supporting Information Table S1. Experimental Free Energies of Hydration (Ghyd) in kcal,2-dimethylcyclohexane 1.58 36 trans-1,4-dimethylcyclohexane 2.11 37 ethene 1.28 38 propene 1.32 39 but-1-ene 1.38 40

  19. On Assessing the Accuracy of Offshore Wind Turbine Reliability-Based Design Loads from the Environmental Contour Method

    E-Print Network [OSTI]

    Manuel, Lance

    On Assessing the Accuracy of Offshore Wind Turbine Reliability-Based Design Loads from to derive design loads for an active stall-regulated offshore wind turbine. Two different Danish offshore contour method; wind turbine; offshore; reliability. INTRODUCTION Inverse reliability techniques

  20. The Accuracy of Determining Three-Dimensional Radiative Transfer Effects in Cumulus Clouds Using Ground-Based Profiling Instruments

    E-Print Network [OSTI]

    Robert, Pincus

    The Accuracy of Determining Three-Dimensional Radiative Transfer Effects in Cumulus Clouds Using. Three-dimensional radiative transfer effects and why one might estimate them in two-dimensional clouds expensive independent column approximation is called the 3D radiative transfer effect. Assessing

  1. Energy and Society Week 6 Section Plan GSI Notes

    E-Print Network [OSTI]

    Kammen, Daniel M.

    standard deviations account for about 99 percent of the data. You can also use a Z-table in any stats book. Renewable energy sources like wind and solar PV are intermittent and, by themselves, reduce the reliability1 Energy and Society Week 6 Section Plan ­ GSI Notes AGENDA 1. Get feedback on section from

  2. September 2013 Laboratory Safety Manual Section 7 -Safety Training

    E-Print Network [OSTI]

    Wilcock, William

    September 2013 Laboratory Safety Manual Section 7 - Safety Training UW Environmental Health and Safety Page 7-1 Section 7 - Safety Training Contents A. SAFETY TRAINING REQUIREMENTS ......................................................7-1 B. EH&S SAFETY TRAINING AND RECORDS ..............................................7-1 C

  3. SECTION 340 WRDA 1992, AS AMENDED ENVIRONMENTAL INFRASTRUCTURE

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED ENVIRONMENTAL INFRASTRUCTURE SOUTHERN WEST VIRGINIA MODEL of six models for the provision of environmental assistance to non-Federal interests in southern West Virginia pursuant to Section 340 of the Water Resources Development Act of 1992, Public Law 102

  4. Electromagnetic-gravitational cross-sections in external electromagnetic fields

    E-Print Network [OSTI]

    Long, H N; Tran, T A; Tuan, T A; Long, Hoang Ngoc; Van Soa, Dang; Tran, Tuan A; Tuan, Tran Anh

    1994-01-01T23:59:59.000Z

    The classical processes: the conversion of photons into gravitons in the static electromagnetic fields are considered by using Feynman perturbation techniques. The differential cross sections are presented for the conversion in the electric field of the flat condesor and the magnetic field of the selenoid. A numerical evaluation shows that the cross sections may have the observable value in the present technical scenario.

  5. Electromgnetic-gravitational cross-sections in external elctromagnetic fields

    E-Print Network [OSTI]

    Hoang Ngoc Long; Dang Van Soa; Tuan A. Tran

    1994-10-03T23:59:59.000Z

    The classical processes: the conversion of photons into gravitons in the static electromagnetic fields are considered by using Feynman perturbation techniques. The differential cross sections are presented for the conversion in the electric field of the flat condesor and the magnetic field of the selenoid. A numerical evaluation shows that the cross sections may have the observable value in the present technical scenario.

  6. Nuclear Science and Technology, November 2000. NEUTRON CROSS SECTION EVALUATIONS

    E-Print Network [OSTI]

    Nuclear Science and Technology, November 2000. 1 NEUTRON CROSS SECTION EVALUATIONS FOR 238 U UP and Power Engineering, 249020 Obninsk, Russia A.Ventura ENEA, Nuclear Data Center and INFN, Bologna Section of the statistical description that includes direct, pre-equilibrium and equilibrium mechanisms of nuclear reactions

  7. SECTION 593 WRDA 1999, AS AMENDED CENTRAL NEW MEXICO

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 593 ­ WRDA 1999, AS AMENDED CENTRAL NEW MEXICO MODEL AGREEMENT FOR CONSTRUCTION ASSISTANCE to non-Federal interests in central New Mexico pursuant to Section 593 of the Water Resources Development of the Federal Water Pollution Control Act (33 U.S.C. 1341). #12;

  8. SECTION 593 WRDA 1999, AS AMENDED CENTRAL NEW MEXICO

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 593 ­ WRDA 1999, AS AMENDED CENTRAL NEW MEXICO MODEL AGREEMENT FOR DESIGN AND CONSTRUCTION environmental assistance to non-Federal interests in central New Mexico pursuant to Section 593 of the Water Pollution Control Act (33 U.S.C. 1341). Compliance with all applicable environmental laws and regulations

  9. Geologic Maps and Structures Name ______________________________ Geology 100 Harbor section

    E-Print Network [OSTI]

    Harbor, David

    Geologic Maps and Structures Name ______________________________ Geology 100 ­ Harbor section The objectives of this lab are for you to learn the basic geologic structures in 3-D and to develop some facility in interpreting the nature of geologic structures from geologic maps and geologic cross sections. A big part

  10. Isolated photon cross section measurement at D0

    SciTech Connect (OSTI)

    Kumar, Ashish; /SUNY, Buffalo

    2006-05-01T23:59:59.000Z

    We report a new measurement of the isolated photon cross section by the D0 experiment at Fermilab using 326 pb{sup -1} of data from Run II of the Tevatron. The measured cross section agrees with the theoretical predictions within uncertainties.

  11. Clean Water Act Section 404 Jurisdiction: What is

    E-Print Network [OSTI]

    Minnesota, University of

    Clean Water Act Section 404 Jurisdiction: What is Regulated? Presentation for the MnDOT Environmental Stewardship and Streamlining Workshop by Tim Smith March 28, 2007 Clean Water Act Section 404 by Tim Smith March 28, 2007 #12;One Corps Serving the Armed Forces and the Nation Clean Water Act

  12. Ris-R-1581(EN) Profile Catalogue for Airfoil Sections

    E-Print Network [OSTI]

    Risø-R-1581(EN) Profile Catalogue for Airfoil Sections Based on 3D Computations Franck Bertagnolio: Franck Bertagnolio, Niels N. Sørensen and Jeppe Johansen Title: Profile Catalogue for Airfoil Sections of aerodynamic characteristics for a wide range of airfoil profiles aimed at wind turbine applications

  13. SOIL SURVEY OF PAYNE COUNTY, OKLAHOMA OSURR Section 17

    E-Print Network [OSTI]

    Ghajar, Afshin J.

    66 26 76 26 26 26 SOIL SURVEY OF PAYNE COUNTY, OKLAHOMA OSURR Section 17 0 300 600 900 1,200150 Feet 0 100 20050 Meters Web Soil Survey 1.1 National Cooperative Soil Survey 5/7/2007 Page 1 of 3 #12;MAP INFORMATION SOIL SURVEY OF PAYNE COUNTY, OKLAHOMA OSURR Section 17 Source of Map: Natural Resources

  14. Forest Ecology (3 credits) FOR 3153C Section: 2265

    E-Print Network [OSTI]

    Florida, University of

    Forest Ecology (3 credits) FOR 3153C Section: 2265 Lectures and Discussion Thursday (periods 3 Ecological principles and their application to the management of forests; major sections include tree students with an overview of 1) ecological principles at four major scales of biological organization

  15. Can a Family Farm Benefit from Section 9006?

    SciTech Connect (OSTI)

    Not Available

    2005-05-01T23:59:59.000Z

    Section 9006 of the 2002 U.S. Farm Bill provides grants and guaranteed loans for rural renewable energy and energy efficiency projects. This fact sheet describes how the Tjaden family of Iowa pursued Section 9006 funding in pursuit of a wind turbine for their family farm.

  16. PHYSICAL SECTIONING IN 3D BIOLOGICAL MICROSCOPY JYOTHI SWAROOP GUNTUPALLI

    E-Print Network [OSTI]

    Choe, Yoonsuck

    -out method to obtain high-resolution volumetric tissue structure data. To meet this demand with increased conclude that to achieve ultrathin sectioning and high-resolution imaging, embedded plastic should be soft. To overcome the machining defects of soft plastics, we suggested free-form nanomachining and sectioning

  17. Policy Writer's Checklist Updating your policy sections and exhibits

    E-Print Network [OSTI]

    California at Davis, University of

    6/4/13 1 Policy Writer's Checklist Updating your policy sections and exhibits: Request the most recent word processing file from your unit policy coordinator (see http of the policy section. Think specifically about what information campus departments will need in order to use

  18. absorption cross section: Topics by E-print Network

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

    absorption cross section First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 ? absorption cross sections...

  19. CT reconstruction techniques for improved accuracy of lung CT airway measurement

    SciTech Connect (OSTI)

    Rodriguez, A. [Department of Medical Physics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53705 (United States); Ranallo, F. N. [Department of Medical Physics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53705 and Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792 (United States); Judy, P. F. [Brigham and Women’s Hospital, Boston, Massachusetts 02115 (United States); Gierada, D. S. [Department of Radiology, Washington University, St. Louis, Missouri 63110 (United States); Fain, S. B., E-mail: sfain@wisc.edu [Department of Medical Physics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53705 (United States); Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792 (United States); Department of Biomedical Engineering,University of Wisconsin School of Engineering, Madison, Wisconsin 53706 (United States)

    2014-11-01T23:59:59.000Z

    Purpose: To determine the impact of constrained reconstruction techniques on quantitative CT (qCT) of the lung parenchyma and airways for low x-ray radiation dose. Methods: Measurement of small airways with qCT remains a challenge, especially for low x-ray dose protocols. Images of the COPDGene quality assurance phantom (CTP698, The Phantom Laboratory, Salem, NY) were obtained using a GE discovery CT750 HD scanner for helical scans at x-ray radiation dose-equivalents ranging from 1 to 4.12 mSv (12–100 mA s current–time product). Other parameters were 40 mm collimation, 0.984 pitch, 0.5 s rotation, and 0.625 mm thickness. The phantom was sandwiched between 7.5 cm thick water attenuating phantoms for a total length of 20 cm to better simulate the scatter conditions of patient scans. Image data sets were reconstructed using STANDARD (STD), DETAIL, BONE, and EDGE algorithms for filtered back projection (FBP), 100% adaptive statistical iterative reconstruction (ASIR), and Veo reconstructions. Reduced (half) display field of view (DFOV) was used to increase sampling across airway phantom structures. Inner diameter (ID), wall area percent (WA%), and wall thickness (WT) measurements of eight airway mimicking tubes in the phantom, including a 2.5 mm ID (42.6 WA%, 0.4 mm WT), 3 mm ID (49.0 WA%, 0.6 mm WT), and 6 mm ID (49.0 WA%, 1.2 mm WT) were performed with Airway Inspector (Surgical Planning Laboratory, Brigham and Women’s Hospital, Boston, MA) using the phase congruency edge detection method. The average of individual measures at five central slices of the phantom was taken to reduce measurement error. Results: WA% measures were greatly overestimated while IDs were underestimated for the smaller airways, especially for reconstructions at full DFOV (36 cm) using the STD kernel, due to poor sampling and spatial resolution (0.7 mm pixel size). Despite low radiation dose, the ID of the 6 mm ID airway was consistently measured accurately for all methods other than STD FBP. Veo reconstructions showed slight improvement over STD FBP reconstructions (4%–9% increase in accuracy). The most improved ID and WA% measures were for the smaller airways, especially for low dose scans reconstructed at half DFOV (18 cm) with the EDGE algorithm in combination with 100% ASIR to mitigate noise. Using the BONE + ASIR at half BONE technique, measures improved by a factor of 2 over STD FBP even at a quarter of the x-ray dose. Conclusions: The flexibility of ASIR in combination with higher frequency algorithms, such as BONE, provided the greatest accuracy for conventional and low x-ray dose relative to FBP. Veo provided more modest improvement in qCT measures, likely due to its compatibility only with the smoother STD kernel.

  20. Theoretical estimates of cross sections for neutron-nucleus collisions

    E-Print Network [OSTI]

    Tapan Mukhopadhyay; Joydev Lahiri; D. N. Basu

    2011-03-14T23:59:59.000Z

    We construct an analytical model derived from nuclear reaction theory and having a simple functional form to demonstrate the quantitative agreement with the measured cross sections for neutron induced reactions. The neutron-nucleus total, reaction and scattering cross sections, for energies ranging from 5 to 700 MeV and for several nuclei spanning a wide mass range are estimated. Systematics of neutron scattering cross sections on various materials for neutron energies upto several hundred MeV are important for ADSS applications. The reaction cross sections of neutrons are useful for determining the neutron induced fission yields in actinides and pre-actinides. The present model based on nuclear reaction theory provides good estimates of the total cross section for neutron induced reaction.

  1. Fission Cross Section Measurements of Actinides at LANSCE

    SciTech Connect (OSTI)

    F. Tovesson; A. B. Laptev; T. S. Hill

    2011-08-01T23:59:59.000Z

    Fission cross sections of a range of actinides have been measured at the Los Alamos Neutron Science Center (LANSCE) in support of nuclear energy applications. By combining measurement at two LANSCE facilities, Lujan Center and the Weapons Neutron Research center (WNR), differential cross sections can be measured from sub-thermal energies up to 200 MeV. Incident neutron energies are determined using the time-of-flight method, and parallel-plate ionization chambers are used to measure fission cross sections relative to the 235U standard. Recent measurements include the 233, 238U, 239-242Pu, and 243Am neutron-induced fission cross sections. In this paper preliminary results for fission cross sections of 243Am and 233U will be presented.

  2. Analytical approximations for x-ray cross sections III

    SciTech Connect (OSTI)

    Biggs, F; Lighthill, R

    1988-08-01T23:59:59.000Z

    This report updates our previous work that provided analytical approximations to cross sections for both photoelectric absorption of photons by atoms and incoherent scattering of photons by atoms. This representation is convenient for use in programmable calculators and in computer programs to evaluate these cross sections numerically. The results apply to atoms of atomic numbers between 1 and 100 and for photon energiesgreater than or equal to10 eV. The photoelectric cross sections are again approximated by four-term polynomials in reciprocal powers of the photon energy. There are now more fitting intervals, however, than were used previously. The incoherent-scattering cross sections are based on the Klein-Nishina relation, but use simpler approximate equations for efficient computer evaluation. We describe the averaging scheme for applying these atomic results to any composite material. The fitting coefficients are included in tables, and the cross sections are shown graphically. 100 graphs, 1 tab.

  3. Comparison of the Accuracy and Speed of Transient Mobile A/C System Simulation Models: Preprint

    SciTech Connect (OSTI)

    Kiss, T.; Lustbader, J.

    2014-03-01T23:59:59.000Z

    The operation of air conditioning (A/C) systems is a significant contributor to the total amount of fuel used by light- and heavy-duty vehicles. Therefore, continued improvement of the efficiency of these mobile A/C systems is important. Numerical simulation has been used to reduce the system development time and to improve the electronic controls, but numerical models that include highly detailed physics run slower than desired for carrying out vehicle-focused drive cycle-based system optimization. Therefore, faster models are needed even if some accuracy is sacrificed. In this study, a validated model with highly detailed physics, the 'Fully-Detailed' model, and two models with different levels of simplification, the 'Quasi-Transient' and the 'Mapped- Component' models, are compared. The Quasi-Transient model applies some simplifications compared to the Fully-Detailed model to allow faster model execution speeds. The Mapped-Component model is similar to the Quasi-Transient model except instead of detailed flow and heat transfer calculations in the heat exchangers, it uses lookup tables created with the Quasi-Transient model. All three models are set up to represent the same physical A/C system and the same electronic controls. Speed and results of the three model versions are compared for steady state and transient operation. Steady state simulated data are also compared to measured data. The results show that the Quasi-Transient and Mapped-Component models ran much faster than the Fully-Detailed model, on the order of 10- and 100-fold, respectively. They also adequately approach the results of the Fully-Detailed model for steady-state operation, and for drive cycle-based efficiency predictions

  4. S-Preconditioner for Multi-fold Data Reduction with Guaranteed User-Controlled Accuracy

    SciTech Connect (OSTI)

    Jin, Ye; Lakshminarasimhan, Sriram; Shah, Neil; Gong, Zhenhuan; Chang, C. S.; Chen, Jacqueline H.; Ethier, Stephane; Kolla, Hemanth; Ku, Seung-Hoe; Klasky, S.; Latham, Robert J.; Ross, Rob; Schuchardt, Karen L.; Samatova, Nagiza F.

    2011-12-14T23:59:59.000Z

    The growing gap between the massive amounts of data generated by petascale scientific simulation codes and the capability of system hardware and software to effectively analyze this data necessitates data reduction. Yet, the increasing data complexity challenges most, if not all, of the existing data compression methods. In fact, lossless compression techniques offer no more than 10% reduction on scientific data that we have experience with, which is widely regarded as effectively incompressible. To bridge this gap, in this paper, we advocate a transformative strategy that enables fast, accurate, and multi-fold reduction of double-precision floating-point scientific data. The intuition behind our method is inspired by an effective use of preconditioners for linear algebra solvers optimized for a particular class of computational dwarfs (e.g., dense or sparse matrices). Focusing on a commonly used multi-resolution wavelet compression technique as the underlying solver for data reduction we propose the S-preconditioner, which transforms scientific data into a form with high global regularity to ensure a significant decrease in the number of wavelet coefficients stored for a segment of data. Combined with the subsequent EQ-calibrator, our resultant method (called S-Preconditioned EQ-Calibrated Wavelets (SPEQC-WAVELETS)), robustly achieved a 4- to 5- fold data reduction while guaranteeing user-defined accuracy of reconstructed data to be within 1% point-by-point relative error, lower than 0:01 Normalized RMSE, and higher than 0:99 Pearson Correlation. In this paper, we show the results we obtained by testing our method on six petascale simulation codes including fusion, combustion, climate, astrophysics, and subsurface groundwater in addition to 13 publicly available scientific datasets. We also demonstrate that application-driven data mining tasks performed on decompressed variables or their derived quantities produce results of comparable quality with the ones for the original data.

  5. PHYSICS EDUCATION RESEARCH SECTION The Physics Education Research Section (PERS) publishes articles describing important results from the

    E-Print Network [OSTI]

    Koehl, Mimi

    of junior-level electricity and magnetism Stephanie V. Chasteen and Steven J. Pollock Science Education to learn physics as a major: upper-division Electricity & Magnetism I (E&M I). While physics educationPHYSICS EDUCATION RESEARCH SECTION The Physics Education Research Section (PERS) publishes articles

  6. REQUIRED SECTIONS OF YOUR PROFILE Create your profile, be as detailed as possible. The following sections are required

    E-Print Network [OSTI]

    Weiblen, George D

    Page 1 REQUIRED SECTIONS OF YOUR PROFILE Create your profile, be as detailed as possible of the SELP program requirements is that you need to create a Linkedin profile. To learn more about how to use. It is not required, but you may want to also add other organizations you are part of to this section of your profile

  7. Automated NNLL+NLO Resummation for Jet-Veto Cross Sections

    E-Print Network [OSTI]

    Thomas Becher; Rikkert Frederix; Matthias Neubert; Lorena Rothen

    2014-12-29T23:59:59.000Z

    In electroweak-boson production processes with a jet veto, higher-order corrections are enhanced by logarithms of the veto scale over the invariant mass of the boson system. In this paper, we resum these Sudakov logarithms at next-to-next-to-leading logarithmic (NNLL) accuracy and match our predictions to next-to-leading order (NLO) fixed-order results. We perform the calculation in an automated way, for arbitrary electroweak final states and in the presence of kinematic cuts on the leptons produced in the decays of the electroweak bosons. The resummation is based on a factorization theorem for the cross sections into hard functions, which encode the virtual corrections to the boson production process, and beam functions, which describe the low-p_T emissions collinear to the beams. The one-loop hard functions for arbitrary processes are calculated using the MadGraph5_aMC@NLO framework, while the beam functions are process independent. We perform the resummation for a variety of processes, in particular for W+W- pair production followed by leptonic decays of the W bosons.

  8. The improvement of the method of equivalent cross section in HTR

    SciTech Connect (OSTI)

    Guo, J.; Li, F. [Inst. of Nuclear and New Energy Technology, Tsinghua Univ., Beijing 100084 (China)

    2012-07-01T23:59:59.000Z

    The Method of Equivalence Cross-Sections (MECS) is a combined transport-diffusion method. By appropriately adjusting the diffusion coefficient of homogenized absorber region, the diffusion theory could yield satisfactory results for the full core model with strong neutron absorber material, for example the control rod in High temperature gas cooled reactor (HTR). Original implementation of MECS based on 1-D cell transport model has some limitation on accuracy and applicability, a new implementation of MECS based on 2-D transport model are proposed and tested in this paper. This improvement can extend the MECS to the calculation of twin small absorber ball system which have a non-circular boring in graphite reflector and different radial position. A least-square algorithm for the calculation of equivalent diffusion coefficient is adopted, and special treatment for diffusion coefficient for higher energy group is proposed in the case that absorber is absent. Numerical results to adopt MECS into control rod calculation in HTR are encouraging. However, there are some problems left. (authors)

  9. 3D optical sectioning with a new hyperspectral confocal fluorescence imaging system.

    SciTech Connect (OSTI)

    Nieman, Linda T.; Sinclair, Michael B.; Davidson, George S.; Van Benthem, Mark Hilary; Haaland, David Michael; Timlin, Jerilyn Ann; Sasaki, Darryl Yoshio; Bachand, George David; Jones, Howland D. T.

    2007-02-01T23:59:59.000Z

    A novel hyperspectral fluorescence microscope for high-resolution 3D optical sectioning of cells and other structures has been designed, constructed, and used to investigate a number of different problems. We have significantly extended new multivariate curve resolution (MCR) data analysis methods to deconvolve the hyperspectral image data and to rapidly extract quantitative 3D concentration distribution maps of all emitting species. The imaging system has many advantages over current confocal imaging systems including simultaneous monitoring of numerous highly overlapped fluorophores, immunity to autofluorescence or impurity fluorescence, enhanced sensitivity, and dramatically improved accuracy, reliability, and dynamic range. Efficient data compression in the spectral dimension has allowed personal computers to perform quantitative analysis of hyperspectral images of large size without loss of image quality. We have also developed and tested software to perform analysis of time resolved hyperspectral images using trilinear multivariate analysis methods. The new imaging system is an enabling technology for numerous applications including (1) 3D composition mapping analysis of multicomponent processes occurring during host-pathogen interactions, (2) monitoring microfluidic processes, (3) imaging of molecular motors and (4) understanding photosynthetic processes in wild type and mutant Synechocystis cyanobacteria.

  10. A compact and versatile microfluidic probe for local processing of tissue sections and biological specimens

    E-Print Network [OSTI]

    Cors, J F; Delamarche, E; Kaigala, G V

    2014-01-01T23:59:59.000Z

    The microfluidic probe (MFP) is a non-contact, scanning microfluidic technology for local (bio)chemical processing of surfaces based on hydrodynamically confining nanoliter volumes of liquids over tens of micrometers. We present here a compact MFP (cMFP) that can be used on a standard inverted microscope and assist in the local processing of tissue sections and biological specimens. The cMFP has a footprint of 175 X 100 X 140 mm^3 and can scan an area of 45 X 45 mm^2 on a surface with an accuracy of +-15 um. The cMFP is compatible with standard surfaces used in life science laboratories such as microscope slides and Petri dishes. For ease of use, we developed self-aligned mounted MFP heads with standardized chip-to-world and chip-to-platform interfaces. Switching the processing liquid in the flow confinement is performed within 90 seconds using a selector valve with a dead-volume of approximately 5 uL. We further implemented height-compensation that allows a cMFP head to follow non-planar surfaces common in t...

  11. Review of Section XI inservice inspection program effectiveness

    SciTech Connect (OSTI)

    Cook, J.F. Sr.

    1993-08-01T23:59:59.000Z

    To evaluate the effectiveness of Section XI, Division 1, {open_quotes}Rules for Inservice Inspection of Nuclear Power Plant Components,{close_quotes} of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, searches were performed of the Licensing Event Report and Nuclear Plant Reliability Data System computerized data bases, and a review was made of inservice inspection summary reports. It was found that the Section XI examinations and tests detect flaws in welds and plant components and result in subsequent corrective action. This study also shows that the format and topics of information provided in Section XI-prescribed inservice inspection summary reports vary widely.

  12. Quantitative modeling of the accuracy in registering preoperative patient-specific anatomic models into left atrial cardiac ablation procedures

    SciTech Connect (OSTI)

    Rettmann, Maryam E., E-mail: rettmann.maryam@mayo.edu; Holmes, David R.; Camp, Jon J.; Cameron, Bruce M.; Robb, Richard A. [Biomedical Imaging Resource, Mayo Clinic College of Medicine, Rochester, Minnesota 55905 (United States)] [Biomedical Imaging Resource, Mayo Clinic College of Medicine, Rochester, Minnesota 55905 (United States); Kwartowitz, David M. [Department of Bioengineering, Clemson University, Clemson, South Carolina 29634 (United States)] [Department of Bioengineering, Clemson University, Clemson, South Carolina 29634 (United States); Gunawan, Mia [Department of Biochemistry and Molecular and Cellular Biology, Georgetown University, Washington D.C. 20057 (United States)] [Department of Biochemistry and Molecular and Cellular Biology, Georgetown University, Washington D.C. 20057 (United States); Johnson, Susan B.; Packer, Douglas L. [Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota 55905 (United States)] [Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota 55905 (United States); Dalegrave, Charles [Clinical Cardiac Electrophysiology, Cardiology Division Hospital Sao Paulo, Federal University of Sao Paulo, 04024-002 Brazil (Brazil)] [Clinical Cardiac Electrophysiology, Cardiology Division Hospital Sao Paulo, Federal University of Sao Paulo, 04024-002 Brazil (Brazil); Kolasa, Mark W. [David Grant Medical Center, Fairfield, California 94535 (United States)] [David Grant Medical Center, Fairfield, California 94535 (United States)

    2014-02-15T23:59:59.000Z

    Purpose: In cardiac ablation therapy, accurate anatomic guidance is necessary to create effective tissue lesions for elimination of left atrial fibrillation. While fluoroscopy, ultrasound, and electroanatomic maps are important guidance tools, they lack information regarding detailed patient anatomy which can be obtained from high resolution imaging techniques. For this reason, there has been significant effort in incorporating detailed, patient-specific models generated from preoperative imaging datasets into the procedure. Both clinical and animal studies have investigated registration and targeting accuracy when using preoperative models; however, the effect of various error sources on registration accuracy has not been quantitatively evaluated. Methods: Data from phantom, canine, and patient studies are used to model and evaluate registration accuracy. In the phantom studies, data are collected using a magnetically tracked catheter on a static phantom model. Monte Carlo simulation studies were run to evaluate both baseline errors as well as the effect of different sources of error that would be present in a dynamicin vivo setting. Error is simulated by varying the variance parameters on the landmark fiducial, physical target, and surface point locations in the phantom simulation studies. In vivo validation studies were undertaken in six canines in which metal clips were placed in the left atrium to serve as ground truth points. A small clinical evaluation was completed in three patients. Landmark-based and combined landmark and surface-based registration algorithms were evaluated in all studies. In the phantom and canine studies, both target registration error and point-to-surface error are used to assess accuracy. In the patient studies, no ground truth is available and registration accuracy is quantified using point-to-surface error only. Results: The phantom simulation studies demonstrated that combined landmark and surface-based registration improved landmark-only registration provided the noise in the surface points is not excessively high. Increased variability on the landmark fiducials resulted in increased registration errors; however, refinement of the initial landmark registration by the surface-based algorithm can compensate for small initial misalignments. The surface-based registration algorithm is quite robust to noise on the surface points and continues to improve landmark registration even at high levels of noise on the surface points. Both the canine and patient studies also demonstrate that combined landmark and surface registration has lower errors than landmark registration alone. Conclusions: In this work, we describe a model for evaluating the impact of noise variability on the input parameters of a registration algorithm in the context of cardiac ablation therapy. The model can be used to predict both registration error as well as assess which inputs have the largest effect on registration accuracy.

  13. Cross sections for short pulse single and double ionization ofhelium

    SciTech Connect (OSTI)

    Palacios, Alicia; Rescigno, Thomas N.; McCurdy, C. William

    2007-11-27T23:59:59.000Z

    In a previous publication, procedures were proposed for unambiguously extracting amplitudes for single and double ionization from a time-dependent wavepacket by effectively propagating for an infinite time following a radiation pulse. Here we demonstrate the accuracy and utility of those methods for describing two-photon single and one-photon double ionization of helium. In particular it is shown how narrow features corresponding to autoionizing states are easily resolved with these methods.

  14. NUMBER: FCMN 1.03 SECTION: Campus Planning and Construction

    E-Print Network [OSTI]

    Almor, Amit

    NUMBER: FCMN 1.03 SECTION: Campus Planning and Construction SUBJECT: Leasing of Real Property DATE: Campus Planning & Construction ________________________________________________________________ I. II. Policy Statement The office of Campus Planning & Construction (CP&C) is responsible for securing

  15. activation cross sections: Topics by E-print Network

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

    S. Takcs; F. Ditri; J. Csikai; A. Hermanne; A. V. Ignatyuk 2013-10-24 19 Isolated Prompt Photon Cross Sections HEP - Phenomenology (arXiv) Summary: We show that the...

  16. activation cross section: Topics by E-print Network

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

    S. Takcs; F. Ditri; J. Csikai; A. Hermanne; A. V. Ignatyuk 2013-10-24 19 Isolated Prompt Photon Cross Sections HEP - Phenomenology (arXiv) Summary: We show that the...

  17. Energy dependence of the total photoproduction cross section at HERA

    E-Print Network [OSTI]

    Aharon Levy

    2008-07-01T23:59:59.000Z

    The energy dependence of the total photon-proton cross-section is determined from data collected with the ZEUS detector at HERA with two different proton beam energies.

  18. Document Section Clause/Provision Change(s) Made

    National Nuclear Security Administration (NNSA)

    Additional narrative has been added to this CLIN. Request for Proposal Section B CLIN 2001, 3001 and 4001 The PWS date was updated and additional narrative has been added to each...

  19. Volume 5, Numbers 2 and 3 ESR THEME SECTION

    E-Print Network [OSTI]

    Lewison, Rebecca

    Email: ir@int-res.com, Internet: www.int-res.com THEME SECTIONS of Endangered Species Research (ESR Hodgson David Agnew Daniel Oro Clement Tisdell Helene Marsh Rory Wilson Brendan Godley Steven Cooke Andrew

  20. SECTION 571 WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 571 ­ WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA MODEL AGREEMENT FOR DESIGN to be developed for providing environmental assistance to non-Federal interests in central West Virginia pursuant

  1. SECTION 340 WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA MODEL AGREEMENT FOR DESIGN to be developed for providing environmental assistance to non-Federal interests in southern West Virginia pursuant

  2. SECTION 571 WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 571 ­ WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA MODEL AGREEMENT FOR DESIGN ASSISTANCE to be developed for providing environmental assistance to non-Federal interests in central West Virginia pursuant

  3. Clean Water Act Section 401 Water Quality Certification: A Water...

    Open Energy Info (EERE)

    Clean Water Act Section 401 Water Quality Certification: A Water Quality Protection Tool for States and Tribes Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  4. Section 1222 Program - Proposed Plains & Eastern Clean Line Project...

    Energy Savers [EERE]

    (DOE) Section 1222 Program is administered by the Office of Electricity Delivery and Energy Reliability (OE). 2. What Is the Process DOE will use to Review Applications Under the...

  5. Dielectronic Recombination Cross-Sections of Fluorinelike Xenon

    E-Print Network [OSTI]

    Dewitt, D. R.; Schneider, D.; Chen, M. H.; Schneider, M. B.; Church, David A.; Weinberg, G.; Sakurai, M.

    1993-01-01T23:59:59.000Z

    Measurements of relative dielectronic recombination (DR) cross sections for fluorinelike xenon (Xe45+) are presented. Recombination takes place in an electron-beam ion trap, where decay rates are obtained as the ions recombine with beam electrons...

  6. alano section ne: Topics by E-print Network

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

    CH2. The axial mass is a free parameter in all fits. Sterile modifications to the flux and changes to the cross section in the simulation relate the two and allow limits to...

  7. NUMBER: IT 1.00 SECTION: Information Technology

    E-Print Network [OSTI]

    Almor, Amit

    NUMBER: IT 1.00 SECTION: Information Technology SUBJECT: Information Technology Procurement DATE by: William F. Hogue Issued by: Office of Information Technology __________________________________________________________________________ Background: This Information Technology (IT) policy is designed to support the Academic, Research

  8. Response to Comments Regarding EPAct 2005 Section 242: October 2014

    Broader source: Energy.gov [DOE]

    This document contains the response to comments that were received in regards to a revised draft of the EPAct 2005 Section 242 "Hydroelectric Incentive Program" Application Guidance that was released on October 20, 2014.

  9. ED1 Exam 2 Problems Fall 2012 Section 16.

    E-Print Network [OSTI]

    Peale, Robert E.

    ED1 Exam 2 Problems Fall 2012 Section 16. 1. Find the scalar and vector potentials of a point charge density is (in SI units) A(r) = (µ0 a/3) ( x r) for r

  10. aspergillus section clavati: Topics by E-print Network

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

    7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 201 Expander codes, Euclidean sections, and compressed sensing Mathematics Websites Summary:...

  11. aespoe hrl sections: Topics by E-print Network

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

    processes with 6 GeV < ETJ < 11 GeV lie below the data. ZEUS Collaboration 1997-10-23 157 Expander codes, Euclidean sections, and compressed sensing Mathematics Websites Summary:...

  12. avena coleoptile sections: Topics by E-print Network

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

    processes with 6 GeV < ETJ < 11 GeV lie below the data. ZEUS Collaboration 1997-10-23 163 Expander codes, Euclidean sections, and compressed sensing Mathematics Websites Summary:...

  13. aspergillus section flavi: Topics by E-print Network

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

    processes with 6 GeV < ETJ < 11 GeV lie below the data. ZEUS Collaboration 1997-10-23 205 Expander codes, Euclidean sections, and compressed sensing Mathematics Websites Summary:...

  14. areas woce sections: Topics by E-print Network

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

    processes with 6 GeV < ETJ < 11 GeV lie below the data. ZEUS Collaboration 1997-10-23 257 Expander codes, Euclidean sections, and compressed sensing Mathematics Websites Summary:...

  15. aspergillus section nigri: Topics by E-print Network

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

    7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 201 Expander codes, Euclidean sections, and compressed sensing Mathematics Websites Summary:...

  16. aspergillus section fumigati: Topics by E-print Network

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

    processes with 6 GeV < ETJ < 11 GeV lie below the data. ZEUS Collaboration 1997-10-23 200 Expander codes, Euclidean sections, and compressed sensing Mathematics Websites Summary:...

  17. Funding: Future Clean Cities Solicitation and EISA Section 244

    Broader source: Energy.gov [DOE]

    At the November 6, 2008 joint Web conference of DOE's Biomass and Clean Cities programs, Linda Bluestein (U.S. Department of Energy, Clean Cities Program) described EISA 2007, Section 244 Renewable Fuel Infrastructure Grants.

  18. averaged cross sections: Topics by E-print Network

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

    14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Relations between fusion cross sections and average angular momenta Nuclear Theory (arXiv) Summary: We study...

  19. averaged cross section: Topics by E-print Network

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

    14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Relations between fusion cross sections and average angular momenta Nuclear Theory (arXiv) Summary: We study...

  20. average cross sections: Topics by E-print Network

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

    14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Relations between fusion cross sections and average angular momenta Nuclear Theory (arXiv) Summary: We study...

  1. California PRC Section 21065.5, Definitions for Geothermal Exploratory...

    Open Energy Info (EERE)

    search OpenEI Reference LibraryAdd to library Legal Document- RegulationRegulation: California PRC Section 21065.5, Definitions for Geothermal Exploratory ProjectLegal Abstract...

  2. Temperature behavior in the build section of multilateral wells

    E-Print Network [OSTI]

    Romero Lugo, Analis Alejandra

    2005-11-01T23:59:59.000Z

    would be most useful. Parameters that were varied for this experiment included fluid thermal properties, absolute values of temperature and pressure, geothermal gradients, flow rates from each lateral, and the trajectories of each build section. From...

  3. Measurement of Heavy Quark cross-sections at CDF

    E-Print Network [OSTI]

    A. Annovi

    2007-09-28T23:59:59.000Z

    The measurement of heavy quark cross-sections provides important tests of the QCD theory. This paper reviews recent measurements of single b-quark and correlated b-quark cross-sections at CDF. Two new measurements of the single b-quark production at CDF agree with the first result from CDF Run II. This clarifies the experimental situation and confirms the recent agreement of theoretical prediction with data. A new measurement of the correlated $b\\bar{b}$ cross-section with dimuon events at CDF is presented. It agrees with theory and it does not confirm the anomalously large $b\\bar{b}$ cross-section seen in Run I by CDF and D${\

  4. SECTION 593 WRDA 1999, AS AMENDED CENTRAL NEW MEXICO

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 593 ­ WRDA 1999, AS AMENDED CENTRAL NEW MEXICO MODEL AGREEMENT FOR DESIGN ASSISTANCE (WORK developed for providing environmental assistance to non-Federal interests in central New Mexico pursuant

  5. ACHP - Consultation with Indian Tribes in the Section 106 Review...

    Open Energy Info (EERE)

    ACHP - Consultation with Indian Tribes in the Section 106 Review Process: a Handbook Jump to: navigation, search OpenEI Reference LibraryAdd to library PermittingRegulatory...

  6. Improving the accuracy of neutrino energy reconstruction in charged-current quasielastic scattering off nuclear targets

    E-Print Network [OSTI]

    Artur M. Ankowski; Omar Benhar; Makoto Sakuda

    2015-02-17T23:59:59.000Z

    We report the results of a theoretical study of quasielastic electron and neutrino interactions with carbon. Our approach takes into account the effects of final-state interactions between the struck nucleon and the residual nucleus, neglected in the impulse approximation, through a generalization of the spectral function formalism. The calculated electron-scattering cross sections turn out to be in very good agreement with the available data over a broad kinematical region. The impact of nuclear effects on the reconstruction of neutrino energy in charged-current quasielastic processes is also studied, and the results of our approach are compared to the predictions of the relativistic Fermi gas model, routinely employed in most Monte Carlo simulations. Finally, we discuss the limitations of the existing procedure for energy reconstruction and propose a new, improved, one. At energy ~600 MeV, we observe a sizable difference between neutrino and antineutrino scattering, important for the measurements of charge-parity symmetry violation. Our analysis suggests that a reliable determination of neutrino energy can only be obtained from models validated by a systematic comparison to the available electron-scattering data.

  7. Foothills Parkway Section 8B Final Environmental Report, Volume 1

    SciTech Connect (OSTI)

    Blasing, T.J.; Cada, G.F.; Carer, M.; Chin, S.M.; Dickerman, J.A.; Etnier, D.A.; Gibson, R.; Harvey, M.; Hatcher, B.; Lietzske, D.; Mann, L.K.; Mulholland, P.J.; Petrich, C.H.; Pounds, L.; Ranney, J.; Reed, R.M.; Ryan, P.F.; Schweitzer, M.; Smith, D.; Thomason, P.; Wade, M.C.

    1999-07-01T23:59:59.000Z

    In 1994, Oak Ridge National Laboratory (ORNL) was tasked by the National Park Service (NPS) to prepare an Environmental Report (ER) for Section 8B of the Foothills Parkway in the Great Smoky Mountains National Park (GSMNP). Section 8B represents 27.7 km (14.2 miles) of a total of 115 km (72 miles) of the planned Foothills Parkway and would connect the Cosby community on the east to the incorporated town of Pittman Center to the west.

  8. SOIL SURVEY OF PAYNE COUNTY, OKLAHOMA OSURR Section 4

    E-Print Network [OSTI]

    Ghajar, Afshin J.

    25 6 4 11 25 41 72 25 74 49 74 11 51 4926 26 74 26 26 26 SOIL SURVEY OF PAYNE COUNTY, OKLAHOMA OSURR Section 4 0 400 800 1,200 1,600200 Feet 0 100 20050 Meters Web Soil Survey 1.1 National Cooperative Soil Survey 5/7/2007 Page 1 of 3 #12;MAP INFORMATION SOIL SURVEY OF PAYNE COUNTY, OKLAHOMA OSURR Section 4

  9. Reservoir rock-property calculations from thin section measurements

    E-Print Network [OSTI]

    Sneed, David Richard

    1988-01-01T23:59:59.000Z

    RESERVOIR ROCK-PROPERTY CALCULATIONS FROM THIN SECTION MEASUREMENTS A Thesis by DAVID RICHARD SNEED Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August 1988 Major Subject: Geology RESERVOIR ROCK-PROPERTY CALCULATIONS FROM THIN SECTION MEASUREMENTS A Thesis by DAVID RICHARD SNEED Approved as to style and content by: Robert R. Berg (Chair of Committee) ~ c(. Thomas T. Tieh (Member...

  10. Krypton charge exchange cross sections for Hall effect thruster models

    SciTech Connect (OSTI)

    Hause, Michael L. [Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts 02159 (United States); Prince, Benjamin D.; Bemish, Raymond J. [Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117 (United States)

    2013-04-28T23:59:59.000Z

    Following discharge from a Hall effect thruster, charge exchange occurs between ions and un-ionized propellant atoms. The low-energy cations produced can disturb operation of onboard instrumentation or the thruster itself. Charge-exchange cross sections for both singly and doubly charged propellant atoms are required to model these interactions. While xenon is the most common propellant currently used in Hall effect thrusters, other propellants are being considered, in particular, krypton. We present here guided-ion beam measurements and comparisons to semiclassical calculations for Kr{sup +} + Kr and Kr{sup 2+} + Kr cross sections. The measurements of symmetric Kr{sup +} + Kr charge exchange are in good agreement with both the calculations including spin-orbit effects and previous measurements. For the symmetric Kr{sup 2+} + Kr reaction, we present cross section measurements for center-of-mass energies between 1 eV and 300 eV, which spans energies not previously examined experimentally. These cross section measurements compare well with a simple one-electron transfer model. Finally, cross sections for the asymmetric Kr{sup 2+} + Kr {yields} Kr{sup +} + Kr{sup +} reaction show an onset near 12 eV, reaching cross sections near constant value of 1.6 A{sup 2} with an exception near 70-80 eV.

  11. System and method for generating a displacement with ultra-high accuracy using a fabry-perot interferometer

    DOE Patents [OSTI]

    McIntyre, Timothy J. (Knoxville, TN)

    1994-01-01T23:59:59.000Z

    A system and method for generating a desired displacement of an object, i.e., a target, from a reference position with ultra-high accuracy utilizes a Fabry-Perot etalon having an expandable tube cavity for resolving, with an Iodine stabilized laser, displacements with high accuracy and for effecting (as an actuator) displacements of the target. A mechanical amplifier in the form of a micropositioning stage has a platform and a frame which are movable relative to one another, and the tube cavity of the etalon is connected between the platform and frame so that an adjustment in length of the cavity effects a corresponding, amplified movement of the frame relative to the cavity. Therefore, in order to provide a preselected magnitude of displacement of the stage frame relative to the platform, the etalon tube cavity is adjusted in length by a corresponding amount. The system and method are particularly well-suited for use when calibrating a high accuracy measuring device.

  12. Verification study of thorium cross section in MVP calculation of thorium based fuel core using experimental data

    SciTech Connect (OSTI)

    Mai, V. T.; Fujii, T.; Wada, K.; Kitada, T. [Osaka Univ., 2-1, Yamadaoka, Suita-shi, Osaka 565-0871 (Japan); Takaki, N.; Yamaguchi, A.; Watanabe, H. [Tokai Univ., 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa, 259-1292 (Japan); Unesaki, H. [Kyoto Univ. Research Reactor Inst., Asahiro-nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494 (Japan)

    2012-07-01T23:59:59.000Z

    Considering the importance of thorium data and concerning about the accuracy of Th-232 cross section library, a series of experiments of thorium critical core carried out at KUCA facility of Kyoto Univ. Research Reactor Inst. have been analyzed. The core was composed of pure thorium plates and 93% enriched uranium plates, solid polyethylene moderator with hydro to U-235 ratio of 140 and Th-232 to U-235 ratio of 15.2. Calculations of the effective multiplication factor, control rod worth, reactivity worth of Th plates have been conducted by MVP code using JENDL-4.0 library [1]. At the experiment site, after achieving the critical state with 51 fuel rods inserted inside the reactor, the measurements of the reactivity worth of control rod and thorium sample are carried out. By comparing with the experimental data, the calculation overestimates the effective multiplication factor about 0.90%. Reactivity worth of the control rods evaluation using MVP is acceptable with the maximum discrepancy about the statistical error of the measured data. The calculated results agree to the measurement ones within the difference range of 3.1% for the reactivity worth of one Th plate. From this investigation, further experiments and research on Th-232 cross section library need to be conducted to provide more reliable data for thorium based fuel core design and safety calculation. (authors)

  13. Alternative energy sources for non-highway transportation: technical section

    SciTech Connect (OSTI)

    Not Available

    1980-06-01T23:59:59.000Z

    Eighteen different alternative fuels were considered in the preliminary screening, from three basic resource bases. Coal can be used to provide 13 of the fuels; oil shale was the source for three of the fuels; and biomass provided the resource base for two fuels not provided from coal. In the case of biomass, six different fuels were considered. Nuclear power and direct solar radiation were also considered. The eight prime movers that were considered in the preliminary screening are boiler/steam turbine; open and closed cycle gas turbines; low and medium speed diesels; spark ignited and stratified charge Otto cycles; electric motor; Stirling engine; free piston; and fuel cell/electric motor. Modes of transport considered are pipeline, marine, railroad, and aircraft. Section 2 gives the overall summary and conclusions, the future outlook for each mode of transportation, and the R and D suggestions by mode of transportation. Section 3 covers the preliminary screening phase and includes a summary of the data base used. Section 4 presents the methodology used to select the fuels and prime movers for the detailed study. Sections 5 through 8 cover the detailed evaluation of the pipeline, marine, railroad, and aircraft modes of transportation. Section 9 covers the demand related issues.

  14. Neutrino Cross Section Measurements @ SciBooNE

    SciTech Connect (OSTI)

    Mariani, C.; /Columbia U.

    2011-10-01T23:59:59.000Z

    We report measurements of cross sections of neutrinos of 0.7 GeV average energy scattering off a carbon target cross sections with by the SciBooNE experiment at Fermilab. These measurements are important inputs for current and future accelerator-based neutrino oscillation experiments in the interpretation of neutrino oscillation signals. The measurement of neutrino mixing angle {theta}{sub 13} is one of the most important goals in current neutrino experiments. For the current and next generation of long baseline neutrino oscillation experiments, T2K, NOvA and LBNE, the precise measurement of neutrino-nucleus cross sections in the few GeV energy range is an essential ingredient in the interpretation of neutrino oscillation signals.

  15. Sub-barrier Fusion Cross Sections with Energy Density Formalism

    E-Print Network [OSTI]

    F. Muhammad Zamrun; K. Hagino; N. Takigawa

    2006-06-07T23:59:59.000Z

    We discuss the applicability of the energy density formalism (EDF) for heavy-ion fusion reactions at sub-barrier energies. For this purpose, we calculate the fusion excitation function and the fusion barrier distribution for the reactions of $^{16}$O with $^{154,}$$^{144}$Sm,$^{186}$W and $^{208}$Pb with the coupled-channels method. We also discuss the effect of saturation property on the fusion cross section for the reaction between two $^{64}$Ni nuclei, in connection to the so called steep fall-off phenomenon of fusion cross sections at deep sub-barrier energies.

  16. International evaluation cooperation Subgroup 7: Multigroup cross section processing

    SciTech Connect (OSTI)

    Roussin, R.W.; White, J.E. (Oak Ridge National Lab., TN (USA)); Sartori, E. (NEA Data Bank, 91 - Gif-sur-Yvette (France)); Panini, G. (ENEA, Bologna (Italy)); MacFarlane, R. (Los Alamos National Lab., NM (USA)); Muir, D. (International Atomic Energy Agency, Vienna (Austria). Nuclear Data Section); Mattes, M. (Stuttgart Univ. (Germany, F.R.). Inst. fuer Kernenergetik und Energiesysteme); Hasegawa, I

    1991-01-01T23:59:59.000Z

    The chairmen of the ENDF/B, JEF, EFF, and JENDL evaluated data files adopted a proposal to develop a fine-group processed cross section library based on the VITAMIN'' concept. The authors listed above, with support from others, are participating in this project. The end result will be a pseudo-problem-independent fine-group cross section library generated from the latest evaluated data in ENDF/B-VI, JEF-2, EFF-2, and JENDL-3. Initial applications of the library will be for shielding, fast reactor physics, and fusion neutronics. Progress made to date will be discussed. 8 refs.

  17. Sub-barrier Fusion Cross Sections with Energy Density Formalism

    SciTech Connect (OSTI)

    Zamrun, Muhammad; Hagino, F. K.; Takigawa, N. [Department of Physics, Tohoku University, 980-8578 (Japan)

    2006-08-14T23:59:59.000Z

    We discuss the applicability of the energy density formalism (EDF) for heavy-ion fusion reactions at sub-barrier energies. For this purpose, we calculate the fusion excitation function and the fusion barrier distribution for the reactions of 16O with 154,144Sm, 186W and 208Pb with the coupled-channels method. We also discuss the effect of saturation property on the fusion cross section for the reaction between two 64Ni nuclei, in connection to the so called steep fall-off phenomenon of fusion cross sections at deep sub-barrier energies.

  18. Suppressed fusion cross section for neutron halo nuclei

    E-Print Network [OSTI]

    Makoto Ito; Kazuhiro Yabana; Takashi Nakatsukasa; Manabu Ueda

    2006-01-20T23:59:59.000Z

    Fusion reactions of neutron-halo nuclei are investigated theoretically with a three-body model. The time-dependent wave-packet method is used to solve the three-body Schrodinger equation. The halo neutron behaves as a spectator during the Coulomb dissociation process of the projectile. The fusion cross sections of 11Be-209Bi and 6He-238U are calculated and are compared with measurements. Our calculation indicates that the fusion cross section is slightly hindered by the presence of weakly bound neutrons.

  19. Neutron capture cross section standards for BNL 325, Fourth Edition

    SciTech Connect (OSTI)

    Holden, N.E.

    1981-01-01T23:59:59.000Z

    This report evaluates the experimental data and recommends values for the thermal neutron cross sections and resonance integrals for the neutron capture reactions: /sup 55/Mn(n,..gamma..), /sup 59/Co(n,..gamma..) and /sup 197/Au(n,..gamma..). The failure of lithium and boron as standards due to the natural variation of the absorption cross sections of these elements is discussed. The Westcott convention, which describes the neutron spectrum as a thermal Maxwellian distribution with an epithermal component, is also discussed.

  20. Direct photon cross section with conversions at CDF

    E-Print Network [OSTI]

    CDF collaboration

    2004-04-20T23:59:59.000Z

    We present a measurement of the isolated direct photon cross section in p-pbar collisions at sqrt(s) = 1.8 TeV and |eta| gamma gamma and eta -> gamma gamma events we use a new background subtraction technique which takes advantage of the tracking information available in a photon conversion event. We find that the shape of the cross section as a function of pT is poorly described by next-to-leading-order QCD predictions, but agrees with previous CDF measurements.

  1. Section J - K: Documents, Exhibits, and Other Attachments

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary of Energy Advisory Board FollowSection 3161L-1 Section

  2. Section L: Instructions, Conditions, and Notices to Offerors

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary of Energy Advisory Board FollowSection 3161L-1 SectionIV

  3. Accuracy of B(E2; 0+ -> 2+) transition rates from intermediate-energy Coulomb excitation experiments

    E-Print Network [OSTI]

    J. M. Cook; T. Glasmacher; A. Gade

    2005-12-19T23:59:59.000Z

    The method of intermediate-energy Coulomb excitation has been widely used to determine absolute B(E2; 0+ -> 2+) quadrupole excitation strengths in exotic nuclei with even numbers of protons and neutrons. Transition rates measured with intermediate-energy Coulomb excitation are compared to their respective adopted values and for the example of 26Mg to the B(E2; 0+ -> 2+) values obtained with a variety of standard methods. Intermediate-energy Coulomb excitation is found to have an accuracy comparable to those of long-established experimental techniques.

  4. Coding for Transmission Coding for Compression Bonus Section CMPSCI 240: Reasoning about Uncertainty

    E-Print Network [OSTI]

    McGregor, Andrew

    Coding for Transmission Coding for Compression Bonus Section CMPSCI 240: Reasoning about: April 29, 2014 #12;Coding for Transmission Coding for Compression Bonus Section Information Theory. #12;Coding for Transmission Coding for Compression Bonus Section Encoding Messages with Redundancy

  5. Coding for Transmission Coding for Compression Bonus Section CMPSCI 240: Reasoning about Uncertainty

    E-Print Network [OSTI]

    McGregor, Andrew

    Coding for Transmission Coding for Compression Bonus Section CMPSCI 240: Reasoning about 1, 2013 #12;Coding for Transmission Coding for Compression Bonus Section Information Theory Encoding for Transmission Coding for Compression Bonus Section Encoding Messages with Redundancy: Error Correcting Suppose

  6. NUMBER: BUSF 6.00 SECTION: Business and Finance

    E-Print Network [OSTI]

    Almor, Amit

    NUMBER: BUSF 6.00 SECTION: Business and Finance SUBJECT: Payroll Authorizations DATE: November 1 The language used in the Business and Finance policies does not create an employment contract between of the Business and Finance policies, in whole or in part, with or without notice. In all cases, the Business

  7. Finance President's Council Section Page 6 Motion: 199610.30

    E-Print Network [OSTI]

    Bolch, Tobias

    Finance President's Council Section Page 6 Motion: 199610.30 UNIVERSITY OF NORTHERN BRITISH by the Finance Department. 1. Cheque Requisition Procedure Complete the Cheque Requisition form in full as indicated (form available from the Finance department). This includes the name of the payee, address, amount

  8. NUMBER: BUSF 6.03 SECTION: Business and Finance

    E-Print Network [OSTI]

    Almor, Amit

    NUMBER: BUSF 6.03 SECTION: Business and Finance SUBJECT: Payroll Frequency DATE: November 1, 2006 DISCLAIMER: The language used in the Business and Finance policies does not create an employment contract the content of the Business and Finance policies, in whole or in part, with or without notice. In all cases

  9. NUMBER: BUSF 8.01 SECTION: Business and Finance

    E-Print Network [OSTI]

    Almor, Amit

    NUMBER: BUSF 8.01 SECTION: Business and Finance SUBJECT: Payroll Authorizations DATE: December 4 The language used in the Business and Finance policies does not create an employment contract between of the Business and Finance policies, in whole or in part, with or without notice. In all cases, the Business

  10. NUMBER: BUSF 6.09 SECTION: Business and Finance

    E-Print Network [OSTI]

    Almor, Amit

    NUMBER: BUSF 6.09 SECTION: Business and Finance SUBJECT: Distribution of Payroll Statements Campuses Authorized by: Rick Kelly Issued by: Payroll The language used in the Business and Finance. The University reserves the right to revise the content of the Business and Finance policies, in whole or in part

  11. Finance President's Council Section Page 31 Motion: 199204.09

    E-Print Network [OSTI]

    Bolch, Tobias

    Finance President's Council Section Page 31 Motion: 199204.09 UNIVERSITY OF NORTHERN BRITISH guarantee that a card will be issued. d) Approved application forms must be forwarded to the Finance.1.4 Reimbursement should take approximately 10 working days from the Finance Department's receipt of the Travel

  12. NUMBER: FCMN 1.00 SECTION: Campus Planning and Construction

    E-Print Network [OSTI]

    Almor, Amit

    NUMBER: FCMN 1.00 SECTION: Campus Planning and Construction SUBJECT: Procurement of Architectural/Engineering and Other Professional Services Related to Construction DATE: November 1, 2006 Policy for: All Campuses Procedure for: All Campuses Authorized by: Rick Kelly Issued by: Campus Planning and Construction

  13. Determination of absolute photoionization cross sections of the phenyl radical

    E-Print Network [OSTI]

    Neumark, Daniel M.

    ; it is generally difficult to produce known concentrations of these species, although some progress in this area. This technique yields the radical PI cross section, even when the system exhibits complex dissociation dynamics measurements because no cooling of the radical occurs after its creation through the dissociation

  14. User exit subroutines This section describes the user exit subroutine.

    E-Print Network [OSTI]

    Hall, Julian

    Chapter 3 User exit subroutines This section describes the user exit subroutine. 39 #12; 40 EMSOL resetting the current model. Specification call ems itru(dspace, dspace, reason, userrtcd) On entry dspace. Specified as: a fullword integer. usrrtcd is the user return code from the user exit subroutine. Specified

  15. User exit subroutines This section describes the user exit subroutine.

    E-Print Network [OSTI]

    Hall, Julian

    Chapter 3 User exit subroutines This section describes the user exit subroutine. 47 #12; 48 EMSOL) On entry dspace is the user­provided work area. Specified as: a one­dimensional real array of doublewords during ems sslv. Specified as: a fullword integer. usrrtcd is the user return code from the user exit

  16. User exit subroutines This section describes the user exit subroutine.

    E-Print Network [OSTI]

    Hall, Julian

    Chapter 3 User exit subroutines This section describes the user exit subroutine. 41 #12; 42 EMSOL) On entry dspace is the user­provided work area. Specified as: a one­dimensional real array of doublewords during ems sslv. Specified as: a fullword integer. usrrtcd is the user return code from the user exit

  17. ACADEMIC AFFAIRS Section 5-1 Instructional Programs.

    E-Print Network [OSTI]

    5-1 CHAPTER 5 ACADEMIC AFFAIRS Section 5-1 Instructional Programs. a. New Programs (1) The Board shall approve: (a) The establishment of all new instructional programs granting academic credit leading credential of an instructional program or requires significant resources except for the following: (1

  18. Technical Section Surface reconstruction using bivariate simplex splines

    E-Print Network [OSTI]

    Li, Xin "Shane"

    Technical Section Surface reconstruction using bivariate simplex splines on Delaunay configurations, Stony Brook, NY 11794-4400, USA a r t i c l e i n f o Article history: Received 13 December 2008 Received in revised form 1 March 2009 Accepted 3 March 2009 Keywords: B-splines Simplex splines Surface

  19. HUMAN RESOURCES MANUAL SECTION 4: NON-STUDENT HOURLY EMPLOYEES

    E-Print Network [OSTI]

    HUMAN RESOURCES MANUAL SECTION 4: NON-STUDENT HOURLY EMPLOYEES 1 | P a g e S e c t i o n 4 will be notified by the Human Resources Department as non-student hourly employees approach their employment limits is submitted to the Human Resources Department by March and October for each school term of each year

  20. 44-88 MHz transverse optics for the rotation section

    E-Print Network [OSTI]

    McDonald, Kirk

    44-88 MHz transverse optics for the rotation section G. Prior 02/02/2010 #12;Finding TwissBz/dz non-zero. #12;SOL model 1 (2/2) Identify the transfer map elements to the Twiss parameters

  1. RZ calculations for self shielded multigroup cross sections

    SciTech Connect (OSTI)

    Li, M.; Sanchez, R.; Zmijarevic, I.; Stankovski, Z. [Commissariat a l'Energie Atomique CEA, Direction de l'Energie Nucleaire, DEN/DM2S/SERMA/LENR, 91191 Gif-sur-Yvette Cedex (France)

    2006-07-01T23:59:59.000Z

    A collision probability method has been implemented for RZ geometries. The method accounts for white albedo, specular and translation boundary condition on the top and bottom surfaces of the geometry and for a white albedo condition on the outer radial surface. We have applied the RZ CP method to the calculation of multigroup self shielded cross sections for Gadolinia absorbers in BWRs. (authors)

  2. Dr. Rene Pecnik Energy Technology Section, Process and Energy Department,

    E-Print Network [OSTI]

    Lindken, Ralph

    Dr. Rene Pecnik Energy Technology Section, Process and Energy Department, Delft University of Technology, Delft, The Netherlands Phone: +31 15 27 89153 Email: r.pecnik@tudelft.nl Fluid dynamics of next generation power cycles More than 80% of the world electricity is produced from thermal energy via

  3. Sustainability Management K4100 Section 001, Fall 2013

    E-Print Network [OSTI]

    Sustainability Management K4100 Section 001, Fall 2013 Time: Wednesdays 6:10-8:00 PM Professor@columbia.edu Sarah Volkman: e-mail: sv2372@columbia.edu Course Objectives: Sustainability management of sustainability management. This is not an academic course that reviews the literature of the field and discusses

  4. NUMBER: IT 1.06 SECTION: Information Technology

    E-Print Network [OSTI]

    Morgan, Stephen L.

    1 NUMBER: IT 1.06 SECTION: Information Technology SUBJECT: Acceptable Use of Information Technology Authorized by: William F. Hogue Issued by: Office of Information Technology I. Policy All users of University information technology resources must adhere to applicable state and federal laws, statutes, and regulations

  5. NUMBER: IT 3.00 SECTION: Information Technology

    E-Print Network [OSTI]

    Almor, Amit

    NUMBER: IT 3.00 SECTION: Information Technology SUBJECT: Information Security DATE: September 2: William F. Hogue Issued by: Office of Information Technology I. Policy The University of South Carolina data and information technology assets. The University Information Security Office is therefore

  6. 2004 HYDROLOGY SECTION AWARD CITATION OF YORAM RUBIN

    E-Print Network [OSTI]

    Rubin, Yoram

    2004 HYDROLOGY SECTION AWARD CITATION OF YORAM RUBIN Yoram Rubin, Professor of Civil hydrology. Starting from 1987, Yoram has published a considerable body of important articles, primarily works have always addressed central problems of hydrologic modeling, on both fundamental and applied

  7. Public Health Genomics Population Health Sciences 650 Section 023

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Public Health Genomics Population Health Sciences 650 Section 023 Summer 2009, 07/20/09 ­ 07: Public health genomics is a new discipline that uses knowledge gained from genetic and molecular research and the social sciences, and much more. This course will provide 1) an introduction to public health genomics, 2

  8. Economics 390 (Section 14) Poverty and Inequality in Advanced Societies

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Economics 390 (Section 14) Poverty and Inequality in Advanced Societies Steven N. Durlauf and intertemporally. The course will have two textbooks as background: Gary Becker and Kevin Murphy, Social Economics in economics. Course lectures will not follow a textbook. They will consist of the instructor's development

  9. Soda Lake Well Lithology Data and Geologic Cross-Sections

    SciTech Connect (OSTI)

    Faulds, James E.

    2013-12-31T23:59:59.000Z

    Comprehensive catalogue of drill?hole data in spreadsheet, shapefile, and Geosoft database formats. Includes XYZ locations of well heads, year drilled, type of well, operator, total depths, well path data (deviations), lithology logs, and temperature data. Plus, 13 cross?sections in Adobe Illustrator format.

  10. Geologic Maps and Structures Name ______________________________ Geology 100 Harbor section

    E-Print Network [OSTI]

    Harbor, David

    Geologic Maps and Structures Name ______________________________ Geology 100 ­ Harbor section Read Ch. 7 before you begin. The objectives of this lab are for you to learn the basic geologic structures in 3-D and to develop some facility in interpreting the nature of geologic structures from geologic

  11. NUMBER: FCMN 2.06 SECTION: Business and Finance

    E-Print Network [OSTI]

    Almor, Amit

    &G) facilities and equipment through an on going preventive and corrective maintenance program. In addition Maintenance The routine maintenance and preventive maintenance of E&G facilities and equipment is performedNUMBER: FCMN 2.06 SECTION: Business and Finance SUBJECT: Building Maintenance for Academic

  12. CORROSION SCIENCE SECTION CORROSION--Vol. 63, No. 6 577

    E-Print Network [OSTI]

    Motta, Arthur T.

    CORROSION SCIENCE SECTION CORROSION--Vol. 63, No. 6 577 Submitted for publication September 2006, MI 48109. Trade name. Corrosion Behavior of Model Zirconium Alloys in Deaerated Supercritical Water supercritical water at 500°C for up to 150 days in an effort to determine their corrosion behavior

  13. CORROSION SCIENCE SECTION CORROSION--Vol. 58, No. 9 761

    E-Print Network [OSTI]

    Wood, Thomas K.

    CORROSION SCIENCE SECTION CORROSION--Vol. 58, No. 9 761 0010-9312/02/000169/$5.00+$0.50/0 © 2002 of Connecticut, Storrs, CT 06269-3222. ** Corrosion and Environmental Effects Laboratory (CEEL), De- partment Corrosion Control of Aluminum 2024 Using Protective Biofilms That Secrete Corrosion Inhibitors D. �rnek, T

  14. CORROSION SCIENCE SECTION CORROSION--Vol. 58, No. 5 417

    E-Print Network [OSTI]

    Wood, Thomas K.

    CORROSION SCIENCE SECTION CORROSION--Vol. 58, No. 5 417 0010-9312/02/000095/$5.00+$0.50/0 © 2002 of California­Irvine, Irvine, CA 92697-2575. Corrosion Control of Mild Steel by Aerobic Bacteria Under.J. Arps, and J.C. Earthman****** ABSTRACT Corrosion of mild steel under aerobic conditions in the pres

  15. CORROSION ENGINEERING SECTION CORROSION--Vol. 60, No. 5 501

    E-Print Network [OSTI]

    DuPont, John N.

    CORROSION ENGINEERING SECTION CORROSION--Vol. 60, No. 5 501 0010. Corrosion Behavior of Fe-Al-Cr Alloys in Sulfur- and Oxygen-Rich Environments in the Presence of Pyrite J considered as weld overlay coatings for corrosion protection. These alloys previously have been shown

  16. September 2012 SECTION 14: SPORTS CAMPS AND CLINICS

    E-Print Network [OSTI]

    Swaddle, John

    September 2012 1 SECTION 14: SPORTS CAMPS AND CLINICS CAMP DIRECTORS ARE EXPECTED TO: 1. Comply and Clinics Guidelines. 3. Submit all required documents and forms by designated dates. 4. Use the Camps and Clinics Planning Checklist in Appendix 14-A to assist throughout the planning process. SCHEDULING In order

  17. Pathology of Treated GI Neoplasia Pathology section seminar

    E-Print Network [OSTI]

    Magee, Derek

    Pathology of Treated GI Neoplasia Pathology section seminar Liverpool DDF meeting Tuesday 19th June, Norman Carr, Judy Wyatt #12;Treated Barretts Philip Kaye NUH #12;55 year old man on long standing treated with TKIs Three cases Dr Shaun Walsh Ninewells Hospital Dundee #12;Case 1 · Male patient, age 43

  18. Theory in evaluation of actinide fission and capture cross sections.

    SciTech Connect (OSTI)

    Lynn, J. E. (J. Eric)

    2004-01-01T23:59:59.000Z

    The authors discuss the possibilities and limitations of the use of theory as a tool in the evaluation of actinide fission and capture cross-sections. They consider especially the target {sup 235}U as an example. They emphasize the roles of intermediate structure in the fission cross-section and of level width fluctuations in both intermediate structure and fine structure, noting that these lead to a breakdown of Hauser-Feshbach theory at sub-barrier and near barrier energies. At higher energies (where fluctuation-averaged Hauser-Feshbach theory is applicable) semi-quantitative and intuitive representations of transition state spectra and barrier level density functions have to be tested against experimental data wherever these are available. Adjustment of the fission cross-section against inelastic scattering to the much better known levels of the residual nucleus should then lead to a fairly sound estimate of the capture cross-section. They compare such estimates with evaluated and experimental data for {sup 235}U.

  19. Exam 1 Phys 105 Section______Fall 2002 Name__________________________________ ID

    E-Print Network [OSTI]

    Gary, Dale E.

    Exam 1 Phys 105 Section______Fall 2002 Name__________________________________ ID: Closed book exam each. Work out problems are 4 points each. Passing of the exam requires at least 50% of the maximum an expression, a t2 /2 where a is acceleration and t is time. The dimension of this expression in the SI system

  20. Section 5 -Termination of Occupancy A. Involuntary Termination of Occupancy

    E-Print Network [OSTI]

    Pantaleone, Jim

    Section 5 - Termination of Occupancy A. Involuntary Termination of Occupancy 1. Housing and Dining privileges may be terminated by the University for cause. Cause includes, but is not limited to violating. 2. The University may terminate this agreement without cause with ten days written notice. 3

  1. Dossier de qualification Matre de Confrences, section 61

    E-Print Network [OSTI]

    Coupechoux, Marceau

    Dossier de qualification Maître de Conférences, section 61 Marceau Coupechoux Télécom ParisTech, CNRS LTCI 37-39, rue Dareau 75014 Paris marceau.coupechoux@telecom-paristech.fr http'enseignement, de recherche et charges collectives. Marceau COUPECHOUX Télécom ParisTech - Département Informatique

  2. W and Z fross section measurement at CDF

    SciTech Connect (OSTI)

    Fedorko, I.; /Athens Natl. Capodistrian U. /INFN, Pisa

    2006-04-01T23:59:59.000Z

    The authors report on the new measurement of W and Z cross section times leptonic branching ratios in p{bar p} collisions at the Tevatron at {radical}s = 1.96 TeV. The measurements are based on the decays W {yields} ev, Z {yields} {mu}{sup +}{mu}{sup -} and Z {yields} {tau}{tau}.

  3. Healthy Zero Energy Buildings (HZEB) Program Cross-Sectional

    E-Print Network [OSTI]

    Healthy Zero Energy Buildings (HZEB) Program ­ Cross-Sectional Study of Contaminant Levels, Source Laboratory is an equal opportunity employer. #12;1 Final Report Healthy Zero Energy Buildings (HZEB) Program P. Sullivan, and William Fisk Environmental Energy Technologies Division February 2014 The research

  4. Physics 137, Section 1, Fall Semester Severe and Hazardous Weather

    E-Print Network [OSTI]

    Hart, Gus

    Physics 137, Section 1, Fall Semester Severe and Hazardous Weather OBSERVATION PROJECTS During project or present one TV-type weather forecast. A list of a few possible observational projects is here of the project, information in the report might include times, dates and places of observations; weather

  5. Section Enrollment Report (CENSUS) -Table of Contents Subject Description

    E-Print Network [OSTI]

    Ginzel, Matthew

    Engineering NUPH NUPH-Nuclear Pharmacy NUR NUR-Nursing NUTR NUTR-Nutrition Science OBHR OBHR-Orgnztnl Bhvr-Clinical Pharmacy CMCI CMCI-CIC Common Market CMPL CMPL-Comparative Literature CNIT CNIT-Computer & Info Tech COM #12;Section Enrollment Report (CENSUS) - Table of Contents Subject Description NUCL NUCL-Nuclear

  6. FRZ Section Enrollment Report (SER) -Table of Contents Subject Description

    E-Print Network [OSTI]

    Pittendrigh, Barry

    Science NUCL Nuclear Engineering NUPH Nuclear Pharmacy NUR Nursing OBHR Orgnztnl Bhvr & Humn Resources OLS Enrollment Report (SER) - Table of Contents Subject Description CLPH Clinical Pharmacy CMCI CIC Common Market Organiz Ldrshp And Supervision PES Physical Education Skills PHAD Pharmacy Administration #12;FRZ Section

  7. Simplified Compression of Redundancy Free Trellis Sections in Turbo Decoder

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Simplified Compression of Redundancy Free Trellis Sections in Turbo Decoder Emmanuel Boutillon that for an M state Turbo decoder, among the L compressed trellis stages, only m = 3 or even m = 2 are necessary turbo-code and/or to reduce its power consumption.1 I. INTRODUCTION The quality of an error control code

  8. Measurement of the Z??? cross section with the ATLAS detector

    E-Print Network [OSTI]

    Taylor, Frank E.

    The Z??? cross section is measured with the ATLAS experiment at the LHC in four different final states determined by the decay modes of the ? leptons: muon-hadron, electron-hadron, electron-muon, and muon-muon. The analysis ...

  9. Absorption cross-section 139 Accumulation mode, of aerosol 146

    E-Print Network [OSTI]

    Jacob, Daniel J.

    133, 151 residence times 153 size distributions 144 Air composition 2 molecular weight 4, 6 Albedo 122 dioxide Coagulation (aerosol) 146 Column model 32 Conditional unstability 56 Continuity equation 75261 INDEX A Absorption cross-section 139 Accumulation mode, of aerosol 146 Acetaldehyde (CH3CHO

  10. Extraction of Neutrino Flux from the Inclusive Muon Cross Section

    E-Print Network [OSTI]

    Murata, Tomoya

    2015-01-01T23:59:59.000Z

    We have studied a method to extract neutrino flux from the data of neutrino-nucleus reaction by using maximum entropy method. We demonstrate a promising example to extract neutrino flux from the inclusive cross section of muon production without selecting a particular reaction process such as quasi-elastic nucleon knockout.

  11. Extraction of Neutrino Flux from the Inclusive Muon Cross Section

    E-Print Network [OSTI]

    Tomoya Murata; Toru Sato

    2015-01-23T23:59:59.000Z

    We have studied a method to extract neutrino flux from the data of neutrino-nucleus reaction by using maximum entropy method. We demonstrate a promising example to extract neutrino flux from the inclusive cross section of muon production without selecting a particular reaction process such as quasi-elastic nucleon knockout.

  12. COMPARISON OF THE ACCURACY OF VARIOUS SPATIAL DISCRETIZATION SCHEMES OF THE DISCRETE ORDINATES EQUATIONS IN 2D CARTESIAN GEOMETRY

    SciTech Connect (OSTI)

    Sebastian Schunert; Yousry Y. Azmy; Damien Fournier

    2011-05-01T23:59:59.000Z

    We present a comprehensive error estimation of four spatial discretization schemes of the two-dimensional Discrete Ordinates (SN) equations on Cartesian grids utilizing a Method of Manufactured Solution (MMS) benchmark suite based on variants of Larsen’s benchmark featuring different orders of smoothness of the underlying exact solution. The considered spatial discretization schemes include the arbitrarily high order transport methods of the nodal (AHOTN) and characteristic (AHOTC) types, the discontinuous Galerkin Finite Element method (DGFEM) and the recently proposed higher order diamond difference method (HODD) of spatial expansion orders 0 through 3. While AHOTN and AHOTC rely on approximate analytical solutions of the transport equation within a mesh cell, DGFEM and HODD utilize a polynomial expansion to mimick the angular flux profile across each mesh cell. Intuitively, due to the higher degree of analyticity, we expect AHOTN and AHOTC to feature superior accuracy compared with DGFEM and HODD, but at the price of potentially longer grind times and numerical instabilities. The latter disadvantages can result from the presence of exponential terms evaluated at the cell optical thickness that arise from the semianalytical solution process. This work quantifies the order of accuracy and the magnitude of the error of all four discretization methods for different optical thicknesses, scattering ratios and degrees of smoothness of the underlying exact solutions in order to verify or contradict the aforementioned intuitive expectation.

  13. In situ recovery from residually heated sections in a hydrocarbon containing formation

    DOE Patents [OSTI]

    Vinegar, Harold J. (Bellaire, TX); Karanikas, John Michael (Houston, TX); Ryan, Robert Charles (Houston, TX)

    2010-12-14T23:59:59.000Z

    Methods of treating a tar sands formation is described herein. The methods may include providing heat to a first section of a hydrocarbon layer in the formation from a plurality of heaters located in the first section of the formation. Heat is transferred from the heaters so that at least a first section of the formation reaches a selected temperature. At least a portion of residual heat from the first section transfers from the first section to a second section of the formation. At least a portion of hydrocarbons in the second section are mobilized by providing a solvation fluid and/or a pressurizing fluid to the second section of the formation.

  14. Created: July, 2014 Laboratory Safety Design Guide Section 3 Laboratory Ventilation

    E-Print Network [OSTI]

    Queitsch, Christine

    Created: July, 2014 Laboratory Safety Design Guide Section 3 ­ Laboratory Ventilation 3-1 Section 3 LABORATORY VENTILATION Contents A. Scope .................................................................................................................3-2 B. General Laboratory Ventilation

  15. The effect of absorbent grid preparation method on precision and accuracy of ambient nitrogen dioxide measurements using Palmes passive diffusion tubes 

    E-Print Network [OSTI]

    Heal, Mathew R

    2008-01-01T23:59:59.000Z

    A few studies have suggested that the precision and accuracy of measurement of NO2 by Palmes-type passive diffusion tube (PDT) are affected by the method of preparation of the triethanolamine (TEA) absorbent coating on the ...

  16. Measurement of the 187Re(?,n)190Ir reaction cross section at sub-Coulomb energies using the Cologne Clover Counting Setup

    E-Print Network [OSTI]

    P. Scholz; A. Endres; A. Hennig; L. Netterdon; H. W. Becker; J. Endres; J. Mayer; U. Giesen; D. Rogalla; F. Schlüter; S. G. Pickstone; K. O. Zell; A. Zilges

    2015-01-07T23:59:59.000Z

    Uncertainties in adopted models of particle+nucleus optical-model potentials directly influence the accuracy in the theoretical predictions of reaction rates as they are needed for reaction-network calculations in, for instance, {\\gamma}-process nucleosynthesis. The improvement of the {\\alpha}+nucleus optical-model potential is hampered by the lack of experimental data at astrophysically relevant energies especially for heavier nuclei. Measuring the Re187({\\alpha},n)Ir190 reaction cross section at sub-Coulomb energies extends the scarce experimental data available in this mass region and helps understanding the energy dependence of the imaginary part of the {\\alpha}+nucleus optical-model potential at low energies. Applying the activation method, after the irradiation of natural rhenium targets with {\\alpha}-particle energies of 12.4 to 14.1 MeV, the reaction yield and thus the reaction cross section were determined via {\\gamma}-ray spectroscopy by using the Cologne Clover Counting Setup and the method of {\\gamma}{\\gamma} coincidences. Cross-section values at five energies close to the astrophysically relevant energy region were measured. Statistical model calculations revealed discrepancies between the experimental values and predictions based on widely used {\\alpha}+nucleus optical-model potentials. However, an excellent reproduction of the measured cross-section values could be achieved from calculations based on the so-called Sauerwein-Rauscher {\\alpha}+nucleus optical-model potential. The results obtained indicate that the energy dependence of the imaginary part of the {\\alpha}+nucleus optical-model potential can be described by an exponential decrease. Successful reproductions of measured cross sections at low energies for {\\alpha}-induced reactions in the mass range 141{\\leq}A{\\leq}187 confirm the global character of the Sauerwein-Rauscher potential.

  17. Nuclear Instruments and Methods in Physics Research A 559 (2006) 207210 High precision numerical accuracy in physics research

    E-Print Network [OSTI]

    Villard, Gilles

    2006-01-01T23:59:59.000Z

    Nuclear Instruments and Methods in Physics Research A 559 (2006) 207­210 High precision numerical by physicists. However, current com- puters are able to perform billions of FP operations each second, and some in the near future. They are reviewed in Section 3, with an evaluation of their performance overhead

  18. Evaluation of delivered monitor unit accuracy of gated step-and-shoot IMRT using a two-dimensional detector array

    SciTech Connect (OSTI)

    Cheong, Kwang-Ho; Kang, Sei-Kwon; Lee, MeYeon; Kim, Su SSan; Park, SoAh; Hwang, Tae-Jin; Kim, Kyoung Ju; Oh, Do Hoon; Bae, Hoonsik; Suh, Tae-Suk [Department of Radiation Oncology, Hallym University College of Medicine, Seoul, 431070 (Korea, Republic of) and Department of Biomedical Engineering, College of Medicine, Catholic University of Korea, Seoul 137701 (Korea, Republic of); Department of Radiation Oncology, Hallym University College of Medicine, Seoul 431070 (Korea, Republic of); Department of Biomedical Engineering, College of Medicine, Catholic University of Korea, Seoul 137701 (Korea, Republic of)

    2010-03-15T23:59:59.000Z

    Purpose: To overcome the problem of organ motion in intensity-modulated radiation therapy (IMRT), gated IMRT is often used for the treatment of lung cancer. In this study, the authors investigated the accuracy of the delivered monitor units (MUs) from each segment during gated IMRT using a two-dimensional detector array for user-specific verification purpose. Methods: The authors planned a 6 MV photon, seven-port step-and-shoot lung IMRT delivery. The respiration signals for gated IMRT delivery were obtained from the one-dimensional moving phantom using the real-time position management (RPM) system (Varian Medical Systems, Palo Alto, CA). The beams were delivered using a Clinac iX (Varian Medical Systems, Palo Alto, CA) with the Millennium 120 MLC. The MatriXX (IBA Dosimetry GmbH, Germany) was validated through consistency and reproducibility tests as well as comparison with measurements from a Farmer-type ion chamber. The authors delivered beams with varying dose rates and duty cycles and analyzed the MatriXX data to evaluate MU delivery accuracy. Results: There was quite good agreement between the planned segment MUs and the MUs computed from the MatriXX within {+-}2% error. The beam-on times computed from the MatriXX data were almost identical for all cases, and they matched well with the RPM beam-on and beam-off signals. A slight difference was observed between them, but it was less than 40 ms. The gated IMRT delivery demonstrated an MU delivery accuracy that was equivalent to ungated IMRT, and the delivered MUs with a gating signal agreed with the planned MUs within {+-}0.5 MU regardless of dose rate and duty cycle. Conclusions: The authors can conclude that gated IMRT is able to deliver an accurate dose to a patient during a procedure. The authors believe that the methodology and results can be transferred to other vendors' devices, particularly those that do not provide MLC log data for a verification purpose.

  19. Elastic breakup cross sections of well-bound nucleons

    E-Print Network [OSTI]

    K. Wimmer; D. Bazin; A. Gade; J. A. Tostevin; T. Baugher; Z. Chajecki; D. Coupland; M. A. Famiano; T. K. Ghosh; G. F. Grinyer M. E. Howard; M. Kilburn; W. G. Lynch; B. Manning; K. Meierbachtol; P. Quarterman; A. Ratkiewicz; A. Sanetullaev; R. H. Showalter; S. R. Stroberg; M. B. Tsang; D. Weisshaar; J. Winkelbauer; R. Winkler; M. Youngs

    2014-12-07T23:59:59.000Z

    The 9Be(28Mg,27Na) one-proton removal reaction with a large proton separation energy of Sp(28Mg)=16.79 MeV is studied at intermediate beam energy. Coincidences of the bound 27Na residues with protons and other light charged particles are measured. These data are analyzed to determine the percentage contributions to the proton removal cross section from the elastic and inelastic nucleon removal mechanisms. These deduced contributions are compared with the eikonal reaction model predictions and with the previously measured data for reactions involving the re- moval of more weakly-bound protons from lighter nuclei. The role of transitions of the proton between different bound single-particle configurations upon the elastic breakup cross section is also quantified in this well-bound case. The measured and calculated elastic breakup fractions are found to be in good agreement.

  20. Cross sections for atomic displacements in solids by fast positrons

    SciTech Connect (OSTI)

    Oen, Ordean S.

    1987-09-01T23:59:59.000Z

    The Mott series has been used to calculate the cross section for atomic displacements produced in elastic collisions between relativistic positrons and atomic nuclei. The Kinchin and Pease displacement model was used. Several elements spanning the atomic table were treated using positron energies ranging from threshold to several tens of MeV. The results are compared with previous calculations for relativistic electrons. It is found that for the same energy and atomic number the positron cross sections are always smaller (up to a factor of 5 or more). It is also found that the McKinley-Fesbach formula which is frequently used in radiation damage analysis is even less reliable for positrons than for electrons. 9 refs.

  1. On the Wong cross section and fusion oscillations

    E-Print Network [OSTI]

    Rowley, N

    2015-01-01T23:59:59.000Z

    We re-examine the well-known Wong formula for heavy-ion fusion cross sections. Although this celebrated formula yields almost exact results for single-channel calculations for relatively heavy systems such as $^{16}$O+$^{144}$Sm, it tends to overestimate the cross section for light systems such as $^{12}$C+$^{12}$C. We generalise the formula to take account of the energy dependence of the barrier parameters and show that the energy-dependent version gives results practically indistinguishable from a full quantal calculation. We then examine the deviations arising from the discrete nature of the intervening angular momenta, whose effect can lead to an oscillatory contribution to the excitation function. We recall some compact, analytic expressions for these oscillations, and highlight the important physical parameters that give rise to them. Oscillations in symmetric systems are discussed, as are systems where the target and projectile identities can be exchanged via a strong transfer channel.

  2. Experimental validation of lead cross sections for scale and MCNP

    SciTech Connect (OSTI)

    Henrikson, D.J.

    1995-12-01T23:59:59.000Z

    Moving spent nuclear fuel between facilities often requires the use of lead-shielded casks. Criticality safety that is based upon calculations requires experimental validation of the fuel matrix and lead cross section libraries. A series of critical experiments using a high-enriched uranium-aluminum fuel element with a variety of reflectors, including lead, has been identified. Twenty-one configurations were evaluated in this study. The fuel element was modelled for KENO V.a and MCNP 4a using various cross section sets. The experiments addressed in this report can be used to validate lead-reflected calculations. Factors influencing calculated k{sub eff} which require further study include diameters of styrofoam inserts and homogenization.

  3. Dielectronic-Recombination Cross-Sections of Hydrogenlike Argon

    E-Print Network [OSTI]

    Dewitt, D. R.; Schneider, D.; Clark, M. W.; Chen, M. H.; Church, David A.

    1991-01-01T23:59:59.000Z

    PHYSICAL REVIEW A VOLUME 44, NUMBER 11 1 DECEMBER 1991 Dielectronic-recombination cross sections of hytlrogenlike argon D. R. DeWitt, D. Schneider, M. W. Clark, and M. H. Chen Latvrenee Livermore National Laboratory, University of California.... These trapped ions then undergo further ionization and other electron-ion 7185 1991 The American Physical Society DeWITT, SCHNEIDER, CLARK, CHEN, AND CHURCH interactions. In order to study dielectronic recombination in highly charged ions, the drift tubes...

  4. Neutrino and Antineutrino Cross sections at MiniBooNE

    SciTech Connect (OSTI)

    Dharmapalan, Ranjan; /Alabama U.

    2011-10-01T23:59:59.000Z

    The MiniBooNE experiment has reported a number of high statistics neutrino and anti-neutrino cross sections -among which are the charged current quasi-elastic (CCQE) and neutral current elastic (NCE) neutrino scattering on mineral oil (CH2). Recently a study of the neutrino contamination of the anti-neutrino beam has concluded and the analysis of the anti-neutrino CCQE and NCE scattering is ongoing.

  5. Coupling Extraction From Off-Shell Cross-sections

    E-Print Network [OSTI]

    Baradhwaj Coleppa; Tanumoy Mandal; Subhadip Mitra

    2014-10-09T23:59:59.000Z

    In this note, we present a novel method of extracting the couplings of a new heavy particle to the Standard Model states. Contrary to the usual discovery process which involves studying the on-shell production, we look at regions away from resonance to take advantage of the simple scaling of the cross-section with the couplings. We apply the procedure to the case of a heavy quark as an illustration.

  6. Dynamics and Bifurcations Reading: Section 8.6

    E-Print Network [OSTI]

    Beer, Randall D.

    Dynamics and Bifurcations on a Torus Reading: Section 8.6 #12;IU/COGS-Q580/Beer Two-Dimensional Surfaces Sphere Torus Plane Cylinder Möbius Strip Klein Bottle Double Torus #12;IU/COGS-Q580/Beer Dynamical Consequences of Topology #12;IU/COGS-Q580/Beer Pairs of Oscillators Live on a Torus 1 2 1 2 #12;IU/COGS-Q580

  7. SOIL SURVEY OF PAYNE COUNTY, OKLAHOMA OSURR Section 5

    E-Print Network [OSTI]

    Ghajar, Afshin J.

    21 76 11 25 61 49 2 11 65 25 74 25 25 25 6125 65 25 40 11 W 26 25 32 W 54 3 11 65 11 74 11 74 SOIL Soil Survey 1.1 National Cooperative Soil Survey 5/7/2007 Page 1 of 3 #12;MAP INFORMATION SOIL SURVEY OF PAYNE COUNTY, OKLAHOMA OSURR Section 5 Source of Map: Natural Resources Conservation Service Web Soil

  8. Updated Higgs cross section at approximate N$^3$LO

    E-Print Network [OSTI]

    Marco Bonvini; Richard D. Ball; Stefano Forte; Simone Marzani; Giovanni Ridolfi

    2014-07-03T23:59:59.000Z

    We update our estimate of the cross section for Higgs production in gluon fusion at next-to-next-to-next-to-leading order (N$^3$LO) in $\\alpha_s$ in view of the recent full computation of the result in the soft limit for infinite top mass, which determines a previously unknown constant. We briefly discuss the phenomenological implications. Results are available through the updated version of the ggHiggs code.

  9. W and Z production cross sections at D0

    SciTech Connect (OSTI)

    Tarazi, J.N. [California Univ., Irvine, CA (United States). Dept. of Physics and Astronomy; D0 Collaboration

    1996-11-01T23:59:59.000Z

    We present a measurement of the production cross section times branching ratio for {ital W} and {ital Z} bosons decaying to the electrons or muons in {ital p}{ital {anti p}} collisions at {radical}s = 1.8 TeV using data recorded at the Tevatron during the 1994-1995 collider run. Using the ratio of these two measurements, we derive the {ital W} leptonic branching fraction and the width of the {ital W} boson.

  10. W and Z cross sections at the Tevatron

    SciTech Connect (OSTI)

    T. Dorigo

    2003-07-01T23:59:59.000Z

    The CDF and D0 experiments at the Tevatron have used p{bar p} collisions at {radical}s = 1.96 TeV to measure the cross section of W and Z boson production using several leptonic final states. An indirect measurement of the total W width has been extracted, and the lepton charge asymmetry in Drell-Yan production has been studied up to invariant masses of 600 GeV/c{sup 2}.

  11. Top Quark Production Cross Section at the Tevatron

    SciTech Connect (OSTI)

    Shabalina, E.; /Chicago U.

    2006-05-01T23:59:59.000Z

    An overview of the preliminary results of the top quark pair production cross section measurements at a center-of-mass energy of 1.96 TeV carried out by the CDF and D0 collaborations is presented. The data samples used for the analyses are collected in the current Tevatron run and correspond to an integrated luminosity from 360 pb{sup -1} up to 760 pb{sup -1}.

  12. Top quark pair production cross section at the Tevatron

    SciTech Connect (OSTI)

    Cortiana, Giorgio; /INFN, Padua /Padua U.

    2008-04-01T23:59:59.000Z

    Top quark pair production cross section has been measured at the Tevatron by CDF and D0 collaborations using different channels and methods, in order to test standard model predictions, and to search for new physics hints affecting the t{bar t} production mechanism or decay. Measurements are carried out with an integrated luminosity of 1.0 to 2.0 fb{sup -1}, and are found to be consistent with standard model expectations.

  13. Overview of recent U235 neutron cross section evaluation work

    SciTech Connect (OSTI)

    Lubitz, C. [Lockheed Martin Corp., Schenectady, NY (United States)

    1998-10-01T23:59:59.000Z

    This report is an overview (through 1997) of the U235 neutron cross section evaluation work at Oak Ridge National Laboratory (ORNL), AEA Technology (Harwell) and Lockheed Martin Corp.-Schenectady (LMS), which has influenced, or appeared in, ENDF/B-VI through Release 5. The discussion is restricted to the thermal and resolved resonance regions, apart from some questions about the unresolved region which still need investigation. The important role which benchmark testing has played will be touched on.

  14. Neutron Cross-Section Measurements on Structural Materials at ORELA

    SciTech Connect (OSTI)

    Guber, Klaus H [ORNL] [ORNL; Koehler, Paul [ORNL] [ORNL; Wiarda, Dorothea [ORNL] [ORNL; Harvey, John A [ORNL] [ORNL

    2011-01-01T23:59:59.000Z

    Neutron capture experiments, using isotopically enriched and natural samples of chromium and titanium, were performed on flight paths 6 and 7 at the 40 m flight station of ORELA. The experimental data were acquired using a pair of deuterated benzene detectors employing the now well-established pulse-height-weighting technique. These data were complemented by new total cross-section measurements where no useful previous data were available.

  15. A.Baghdasaryan. Jet Cross Sections and S at HERA. LOW X 2008, Kolimpari, Greece, July, 6-10 1 Jet Cross Sections and s at

    E-Print Network [OSTI]

    A.Baghdasaryan. Jet Cross Sections and S at HERA. LOW X 2008, Kolimpari, Greece, July, 6-10 1 Jet Cross Sections and s at HERA Low X 2008, 6-10 July Kolimpary, Greece Artem Baghdasaryan Yerevan Physics.Baghdasaryan. Jet Cross Sections and S at HERA. LOW X 2008, Kolimpari, Greece, July, 6-10 2 Motivation Jets physics

  16. Froissart Bound on Inelastic Cross Section Without Unknown Constants

    E-Print Network [OSTI]

    Martin, André

    2015-01-01T23:59:59.000Z

    Assuming that axiomatic local field theory results hold for hadron scattering, Andr\\'e Martin and S. M. Roy recently obtained absolute bounds on the D-wave below threshold for pion-pion scattering and thereby determined the scale of the logarithm in the Froissart bound on total cross sections in terms of pion mass only. Previously, Martin proved a rigorous upper bound on the inelastic cross-section $\\sigma_{inel}$ which is one-fourth of the corresponding upper bound on $\\sigma_{tot}$, and Wu, Martin,Roy and Singh improved the bound by adding the constraint of a given $\\sigma_{tot}$. Here we use unitarity and analyticity to determine, without any high energy approximation, upper bounds on energy averaged inelastic cross sections in terms of low energy data in the crossed channel. These are Froissart-type bounds without any unknown coefficient or unknown scale factors and can be tested experimentally. Alternatively, their asymptotic forms,together with the Martin-Roy absolute bounds on pion-pion D-waves below t...

  17. \\ttbar and single top cross sections at the Tevatron

    SciTech Connect (OSTI)

    CDF, Elizaveta Shabalina for; collaborations, D0

    2012-01-01T23:59:59.000Z

    We present a summary of the latest measurements of the top pair and single top cross sections performed by the CDF and D0 collaborations at the Fermilab Tevatron collider. The Fermilab Tevatron collider ended its run on September 30, 2011 after delivering more than 10 fb{sup -1} of p{bar p} collision data per experiment at {radical}s = 1.96 TeV. A large sample of top quarks collected by the CDF and D0 experiments allows to perform precision measurements of their production which is predicted to occur within the standard model (SM) either in pairs via strong interactions or as single top events via electroweak interactions. Such measurements represent an important test of the theoretical calculations which predict the t{bar t} and single top production cross sections with a precision of 6% to 8% and 5%, respectively. Precise measurements of top pair cross section ({sigma}{sub t{bar t}}) in different t{bar t} final states and single top production via different production mechanisms are highly desirable as they are sensitive to the non-SM particles that may appear in top quark production or decays.

  18. Towards Reliable Cross Sections for National Security Applications

    SciTech Connect (OSTI)

    Escher, J E; Dietrich, F S; Nobre, G A; Thompson, I J

    2011-02-24T23:59:59.000Z

    Stockpile stewardship requires the description of weapons performance without resorting to underground nuclear testing. In the earlier tests, selected isotopes were used as detectors, and recovered after irradiation. Aspects of nuclear device performance were inferred by comparing the measured isotopic ratios to those predicted from simulations. The reaction flows that produce the final isotopic distributions proceed through regions of the nuclear chart that include unstable nuclei. Presently, improved nuclear data input is required to reanalyze prior tests and to certify the stockpile's reliability and safety. Many important cross sections are unknown, as is shown in the example of the Yttrium reaction network (Figure 1). The relevant reactions include (n,2n), (n,n'), (n,gamma), (n,p) and other charged-particle emitting reactions. The cross sections have to be calculated or inferred from indirect measurements. In both cases, reliable optical models that are valid a few nucleons away from stability are needed. The UNEDF Nuclear Reaction activities address this need by combining nuclear-structure input from UNEDF structure calculations with modern reaction theory and large-scale computational capabilities to develop microscopic nucleon-nucleus optical potentials that can be extrapolated to unstable nuclei. In addition, the reaction calculation tools and optical models developed in this context are proving valuable for planning and interpreting indirect (surrogate) measurements of the required cross sections.

  19. CMB Constraints On The Thermal WIMP Annihilation Cross Section

    E-Print Network [OSTI]

    Steigman, Gary

    2015-01-01T23:59:59.000Z

    A thermal relic, often referred to as a weakly interacting massive particle (WIMP),is a particle produced during the early evolution of the Universe whose relic abundance (e.g., at present) depends only on its mass and its thermally averaged annihilation cross section (annihilation rate factor) sigma*v_ann. Late time WIMP annihilation has the potential to affect the cosmic microwave background (CMB) power spectrum. Current observational constraints on the absence of such effects provide bounds on the mass and the annihilation cross section of relic particles that may, but need not be dark matter candidates. For a WIMP that is a dark matter candidate, the CMB constraint sets an upper bound to the annihilation cross section, leading to a lower bound to their mass that depends on whether or not the WIMP is its own antiparticle. For a self-conjugate WIMP, m_min = 50f GeV, where f is an electromagnetic energy efficiency factor. For a non self-conjugate WIMP, the minimum mass is a factor of two larger. For a WIMP t...

  20. Improving the accuracy and efficiency of time-resolved electronic spectra calculations: Cellular dephasing representation with a prefactor

    E-Print Network [OSTI]

    Zambrano, Eduardo; Vanicek, Jiri

    2013-01-01T23:59:59.000Z

    Time-resolved electronic spectra can be obtained as the Fourier transform of a special type of time correlation function known as fidelity amplitude, which, in turn, can be evaluated approximately and efficiently with the dephasing representation. Here we improve both the accuracy of this approximation---with an amplitude correction derived from the phase-space propagator---and its efficiency---with an improved cellular scheme employing inverse Weierstrass transform and optimal scaling of the cell size. We demonstrate the advantages of the new methodology by computing dispersed time-resolved stimulated emission spectra in the harmonic potential, pyrazine, and the NCO molecule. In contrast, we show that in strongly chaotic systems such as the quartic oscillator the original dephasing representation is more appropriate than either the cellular or prefactor-corrected methods.

  1. Beyond chemical accuracy: The pseudopotential approximation in diffusion Monte Carlo calculations of the HCP to BCC phase transition in beryllium

    E-Print Network [OSTI]

    Shulenburger, Luke; Desjarlais, M P

    2015-01-01T23:59:59.000Z

    Motivated by the disagreement between recent diffusion Monte Carlo calculations and experiments on the phase transition pressure between the ambient and beta-Sn phases of silicon, we present a study of the HCP to BCC phase transition in beryllium. This lighter element provides an oppor- tunity for directly testing many of the approximations required for calculations on silicon and may suggest a path towards increasing the practical accuracy of diffusion Monte Carlo calculations of solids in general. We demonstrate that the single largest approximation in these calculations is the pseudopotential approximation. After removing this we find excellent agreement with experiment for the ambient HCP phase and results similar to careful calculations using density functional theory for the phase transition pressure.

  2. Improving the accuracy and efficiency of time-resolved electronic spectra calculations: Cellular dephasing representation with a prefactor

    SciTech Connect (OSTI)

    Zambrano, Eduardo; Šulc, Miroslav; Vaní?ek, Ji?í [Laboratory of Theoretical Physical Chemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne (Switzerland)] [Laboratory of Theoretical Physical Chemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne (Switzerland)

    2013-08-07T23:59:59.000Z

    Time-resolved electronic spectra can be obtained as the Fourier transform of a special type of time correlation function known as fidelity amplitude, which, in turn, can be evaluated approximately and efficiently with the dephasing representation. Here we improve both the accuracy of this approximation—with an amplitude correction derived from the phase-space propagator—and its efficiency—with an improved cellular scheme employing inverse Weierstrass transform and optimal scaling of the cell size. We demonstrate the advantages of the new methodology by computing dispersed time-resolved stimulated emission spectra in the harmonic potential, pyrazine, and the NCO molecule. In contrast, we show that in strongly chaotic systems such as the quartic oscillator the original dephasing representation is more appropriate than either the cellular or prefactor-corrected methods.

  3. Determination of the stellar (n,$\\gamma$) cross section of $^{54}Fe$ with accelerator mass spectrometry

    E-Print Network [OSTI]

    Coquard, L; Dillmann, I; Wallner, A; Knie, K; Kutschera, W

    2006-01-01T23:59:59.000Z

    Determination of the stellar (n,$\\gamma$) cross section of $^{54}Fe$ with accelerator mass spectrometry

  4. COOPERATION WITH THE STATES THE ENDANGERED SPECIES ACT SECTION 6 PROGRAM

    E-Print Network [OSTI]

    endangered and threatened species, candidate species, and recently de-listed species. Under section 6, NMFS

  5. Black liquor combustion validated recovery boiler modeling: Final year report. Volume 2 (Appendices I, section 5 and II, section 1)

    SciTech Connect (OSTI)

    Grace, T.M.; Frederick, W.J.; Salcudean, M.; Wessel, R.A.

    1998-08-01T23:59:59.000Z

    This project was initiated in October 1990, with the objective of developing and validating a new computer model of a recovery boiler furnace using a computational fluid dynamics (CFD) code specifically tailored to the requirements for solving recovery boiler flows, and using improved submodels for black liquor combustion based on continued laboratory fundamental studies. The key tasks to be accomplished were as follows: (1) Complete the development of enhanced furnace models that have the capability to accurately predict carryover, emissions behavior, dust concentrations, gas temperatures, and wall heat fluxes. (2) Validate the enhanced furnace models, so that users can have confidence in the predicted results. (3) Obtain fundamental information on aerosol formation, deposition, and hardening so as to develop the knowledge base needed to relate furnace model outputs to plugging and fouling in the convective sections of the boiler. (4) Facilitate the transfer of codes, black liquid submodels, and fundamental knowledge to the US kraft pulp industry. Volume 2 contains the last section of Appendix I, Radiative heat transfer in kraft recovery boilers, and the first section of Appendix II, The effect of temperature and residence time on the distribution of carbon, sulfur, and nitrogen between gaseous and condensed phase products from low temperature pyrolysis of kraft black liquor.

  6. From ZZ to ZH : How Low Can These Cross Sections Go or Everybody, Let's Cross Section Limbo!

    SciTech Connect (OSTI)

    Strauss, Emanuel Alexandre; /SUNY, Stony Brook

    2009-08-01T23:59:59.000Z

    We report on two searches performed at the D0 detector at the Fermi National Laboratory. The first is a search for Z di-boson production with a theoretical cross section of 1.4 pb. The search was performed on 2.6 fb{sup -1} of data and contributed to the first observation of ZZ production at a hadron collider. The second is a search for a low mass Standard Model Higgs in 4.2 fb{sup -1} of data. The Higgs boson is produced in association with a Z boson where the Higgs decays hadronically and the Z decays to two leptons. The ZZ search was performed in both the di-electron and di-muon channels. For the ZH search, we will focus on the muonic decays where we expanded the traditional coverage by considering events in which one of the two muons fails the selection requirement, and is instead reconstructed as an isolated track. We consider Higgs masses between 100 and 150 GeV, with theoretical cross sections ranging from 0.17 to 0.042 pb, and set upper limits on the ZH production cross-section at 95% confidence level.

  7. Radioactive targets for neutron-induced cross section measurements

    SciTech Connect (OSTI)

    Kronenberg, A. (Andreas); Bond, E. M. (Evelyn M.); Glover, S. E. (Samuel E.); Rundberg, R. S. (Robert S.); Vieira, D. J. (David J.); Esch, E. I. (Ernst-Ingo); Reifarth, R. (Rene); Ullmann, J. L. (John L.); Haight, Robert C.; Rochmann, D. (Dimitri)

    2004-01-01T23:59:59.000Z

    Measurements using radioactive targets are important for the determination of key reaction path ways associated with the synthesis of the elements in nuclear astrophysics (sprocess), advanced fuel cycle initiative (transmutation of radioactive waste), and stockpile stewardship. High precision capture cross-section measurements are needed to interpret observations, predict elemental or isotopical ratios, and unobserved abundances. There are two new detector systems that are presently being commissioned at Los Alamos National Laboratory for very precise measurements of (n,{gamma}) and (n,f) cross-sections using small quantities of radioactive samples. DANCE (Detector for Advanced Neutron-Capture Experiments), a 4 {pi} gamma array made up of 160 BaF{sub 2} detectors, is designed to measure neutron capture cross-sections of unstable nuclei in the low-energy range (thermal to {approx}500 keV). The high granularity and high detection efficiency of DANCE, combined with the high TOF-neutron flux available at the Lujan Center provides a versatile tool for measuring many important cross section data using radioactive and isotopically enriched targets of about 1 milligram. Another powerful instrument is the Lead-slowing down spectrometer (LSDS), which will enable the measurement of neutron-induced fission cross-section of U-235m and other short-lived actinides in a energy range from 1-200 keV with sample sizes down to 10 nanograms. Due to the short half-life of the U-235m isomer (T{sub 1/2} = 26 minutes), the samples must be rapidly and repeatedly extracted from its {sup 239}Pu parent. Since {sup 239}Pu is itself highly fissile, the separation must not only be rapid, but must also be of very high purity (the Pu must be removed from the U with a decontamination factor >10{sup 12}). Once extracted and purified, the {sup 235m}U isomer would be electrodeposited on solar cells as a fission detector and placed within the LSDS for direct (n,f) cross section measurements. The production of radioactive targets of a few milligrams will be described as well as the containment for safe handling of these targets at the Lujan Center at LANSCE. To avoid any contamination, the targets are electrochemically fixed onto thin Ti foils and two foils are placed back to back to contain the radioactive material within. This target sandwich is placed in a cylinder made of aluminum with thin translucent windows made of Kapton. Actinides targets, such as {sup 234,235,236,238}U, {sup 237}Np, and {sup 239}Pu are prepared by electrodeposition or molecular plating techniques. Target thicknesses of 1-2 mg/cm{sup 2} with sizes of 1 cm{sup 2} or more have been made. Other targets will be fabricated from separation of irradiated isotopically enriched targets, such as {sup 155}Eu from {sup 154}Sm,{sup 171}Tm from {sup 170}Er, and {sup 147}Pm from {sup 146}Nd, which has been irradiated in the high flux reactor at ILL, Grenoble. A radioactive sample isotope separator (RSIS) is in the process of being commissioned for the preparation of other radioactive targets. A brief summary of these experiments and the radioactive target preparation technique will be given.

  8. Hadronic Production of psi(2S) Cross section and Polarization

    SciTech Connect (OSTI)

    Chung, Kwangzoo; /Carnegie Mellon U.

    2008-05-01T23:59:59.000Z

    The hadronic production cross section and the polarization of {psi}(2S) meson are measured by using the data from p{bar p} collisions at {radical}s = 1.96 TeV collected by the Collider Detector at Fermilab. The datasets used correspond to integrated luminosity of 1.1 fb{sup -1} and 800 pb{sup -1}, respectively. The decay {psi}(2S) {yields} {mu}{sup +}{mu}{sup -} is used to reconstruct {psi}(2S) mesons in the rapidity range |y({psi}(2S))| < 0.6. The coverage of the p{sub T} range is 2.0 GeV/c {le} p{sub T} ({psi}(2S)) < 30 GeV/c for the cross section analysis and pT {ge} 5 GeV/c for the polarization analysis. For events with p{sub T} ({psi}(2S)) > 2 GeV/c the integrated inclusive cross section multiplied by the branching ratio for dimuon decay is 3.17 {+-} 0.04 {+-} 0.28 nb . This result agrees with the CDF Run I measurement considering the increased center-of-mass energy from 1.8 TeV to 1.96 TeV. The polarization of the promptly produced {psi}(2S) mesons is found to be increasingly longitudinal as p{sub T} increases from 5 GeV/c to 30 GeV/c. The result is compared to contemporary theory models.

  9. Neutron Cross Section Covariances for Structural Materials and Fission Products

    SciTech Connect (OSTI)

    Hoblit, S.; Hoblit,S.; Cho,Y.-S.; Herman,M.; Mattoon,C.M.; Mughabghab,S.F.; Oblozinsky,P.; Pigni,M.T.; Sonzogni,A.A.

    2011-12-01T23:59:59.000Z

    We describe neutron cross section covariances for 78 structural materials and fission products produced for the new US evaluated nuclear reaction library ENDF/B-VII.1. Neutron incident energies cover full range from 10{sup -5} eV to 20 MeV and covariances are primarily provided for capture, elastic and inelastic scattering as well as (n,2n). The list of materials follows priorities defined by the Advanced Fuel Cycle Initiative, the major application being data adjustment for advanced fast reactor systems. Thus, in addition to 28 structural materials and 49 fission products, the list includes also {sup 23}Na which is important fast reactor coolant. Due to extensive amount of materials, we adopted a variety of methodologies depending on the priority of a specific material. In the resolved resonance region we primarily used resonance parameter uncertainties given in Atlas of Neutron Resonances and either applied the kernel approximation to propagate these uncertainties into cross section uncertainties or resorted to simplified estimates based on integral quantities. For several priority materials we adopted MF32 covariances produced by SAMMY at ORNL, modified by us by adding MF33 covariances to account for systematic uncertainties. In the fast neutron region we resorted to three methods. The most sophisticated was EMPIRE-KALMAN method which combines experimental data from EXFOR library with nuclear reaction modeling and least-squares fitting. The two other methods used simplified estimates, either based on the propagation of nuclear reaction model parameter uncertainties or on a dispersion analysis of central cross section values in recent evaluated data files. All covariances were subject to quality assurance procedures adopted recently by CSEWG. In addition, tools were developed to allow inspection of processed covariances and computed integral quantities, and for comparing these values to data from the Atlas and the astrophysics database KADoNiS.

  10. MOX Cross-Section Libraries for ORIGEN-ARP

    SciTech Connect (OSTI)

    Gauld, I.C.

    2003-07-01T23:59:59.000Z

    The use of mixed-oxide (MOX) fuel in commercial nuclear power reactors operated in Europe has expanded rapidly over the past decade. The predicted characteristics of MOX fuel such as the nuclide inventories, thermal power from decay heat, and radiation sources are required for design and safety evaluations, and can provide valuable information for non-destructive safeguards verification activities. This report describes the development of computational methods and cross-section libraries suitable for the analysis of irradiated MOX fuel with the widely-used and recognized ORIGEN-ARP isotope generation and depletion code of the SCALE (Standardized Computer Analyses for Licensing Evaluation) code system. The MOX libraries are designed to be used with the Automatic Rapid Processing (ARP) module of SCALE that interpolates appropriate values of the cross sections from a database of parameterized cross-section libraries to create a problem-dependent library for the burnup analysis. The methods in ORIGEN-ARP, originally designed for uranium-based fuels only, have been significantly upgraded to handle the larger number of interpolation parameters associated with MOX fuels. The new methods have been incorporated in a new version of the ARP code that can generate libraries for low-enriched uranium (LEU) and MOX fuel types. The MOX data libraries and interpolation algorithms in ORIGEN-ARP have been verified using a database of declared isotopic concentrations for 1042 European MOX fuel assemblies. The methods and data are validated using a numerical MOX fuel benchmark established by the Organization for Economic Cooperation and Development (OECD) Working Group on burnup credit and nuclide assay measurements for irradiated MOX fuel performed as part of the Belgonucleaire ARIANE International Program.

  11. Parton distributions with the combined HERA charm production cross sections

    SciTech Connect (OSTI)

    Bertone, Valerio [Physikalisches Institut, Albert-Ludwigs-Universitaet Freiburg, Hermann-Herder-Strasse 3, D-79104 Freiburg i. B (Germany); Rojo, Juan [PH Department, TH Unit, CERN, CH-1211 Geneva 23 (Switzerland)

    2013-04-15T23:59:59.000Z

    Heavy quark structure functions from HERA provide a direct handle on the medium and small-x gluon PDF. In this contribution, we discuss ongoing progress on the implementation of the FONLL General-Mass scheme with running heavy quark masses, and of its benchmarking with the HOPPET and OpenQCDrad codes, and then present the impact of the recently released combined HERA charm production cross sections in the NNPDF 2.3 analysis. We find that the combined charm data contribute to constraining the gluon and quarks at small values of Bjorken-x.

  12. Final Report - Nucelar Astrophysics & Neutron Cross Section Measurements

    SciTech Connect (OSTI)

    Carlton, Robert F

    2009-12-01T23:59:59.000Z

    This enduring research program of 28 years has taken advantage of the excellent research facility of ORELA at Oak Ridge National Laboratory. The fruitful collaborations include a number of scientists from ORNL and some from LASL. This program which has ranged from nuclear structure determinations to astrophysical applications has resulted in the identification and/or the refinement of the nuclear properties of more than 5,000 nuclear energy levels or compound energy states. The nuclei range from 30Si to 250Cf, the probes range from thermal to 50 MeV neutrons, and the studies range from capture gamma ray spectra to total and differential scattering and absorption cross sections. Specific target nuclei studied include the following: 120Sn 124Sn 125Sn 113Sn 115Sn 117Sn 119Sn 249Cf 33S 34S 249Bk 186Os 187Os 188Os 30Si 32S 40Ca 48Ca 60Ni 54Fe 86Kr 88Sr 40Ar 122Sn 90Zr 122Sn(n,?) 208Pb 204Pb 52Cr 54Cr 50Cr 53Cr As can be seen, we have studied, on average, more than one isotope per year of grant funding and have focused on exploiting those elements having multiple isotopes in order to investigate systematic trends in nuclear properties, for the purpose of providing more stringent tests of the nuclear spherical optical model with a surface imaginary potential. We have investigated an l-dependence of the real-well depth of the spherical optical model; we have used these measurements to deduce the existence of doorway states in the compound nucleus; and in the total cross section measurements we have, in addition to resonance energies and widths, obtained values for the level density and neutron strength function. Due to the high neutron energy resolution of the ORELA and in some cases the addition of differential scattering cross section data, we have been able to disaggregate the spin states and provide level spacing and strength function for each partial wave in the neutron-nucleus interaction, in some cases up to d5/2. In the following we will summarize the most recent analyses of neutron total cross section measurements, some of which have not been previously reported.

  13. Comments to Section 934 Rulemaking | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T, Inc.'sEnergyTexas1.Space Data Corporation Commentsto Section 934 Rulemaking

  14. EPAct 2005 Section 1817 Public Comments | 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 onYouTube YouTube Note: Since the YouTube|6721 Federal Register / Vol.6: RecordJune 20,in the101 EPAEnergy Section

  15. Section 20320 of the Revised Continuing Appropriations Resolution |

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO Overview OCHCO OverviewRepository |Complex"Department ofEnergyAwardSection

  16. ACHP - Section 106 Applicant Toolkit | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1 WindtheEnergySulfonate as aAAB AsiaABEEolicaSection 10606

  17. Hawaii DOH Solid Waste Section Webpage | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG| OpenInformationHartsville,NewOpen EnergyWebpageCounty,Section

  18. Recommendations: Draft 2008 Section 999 Annual Plan | Department of Energy

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

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  19. Recommendations: Draft 2009 Section 999 Annual Plan | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010In addition toDOEDepartment ofDOE hasURTAC8 Section9

  20. Section 3161 Rehiring Preference for Eligible Separated Employees

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary of Energy Advisory Board FollowSection 3161 Rehiring

  1. Section I - FUNDING OPPORTUNITY DESCRIPTION | Department of Energy

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

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  2. Oregon Section 401 Removal/Fill Certification Webpage | Open Energy

    Open Energy Info (EERE)

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  3. File:Section106examplereport.pdf | Open Energy Information

    Open Energy Info (EERE)

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  4. Navy's Section 2922a Legislation Success Stories | Department of Energy

    Office of Environmental Management (EM)

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  5. SRS FTF Section 3116 Determination signed by Secretary Chu

    Office of Environmental Management (EM)

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  6. MiniBooNE QE Cross Section Data Release

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

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  7. NERC IVGTF Task 1-3 Section 3-1

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

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  8. NREL Evaluates the Thermal Performance of Uninsulated Walls to Improve the Accuracy of Building Energy Simulation Tools (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-01-01T23:59:59.000Z

    This technical highlight describes NREL research to develop models of uninsulated wall assemblies that help to improve the accuracy of building energy simulation tools when modeling potential energy savings in older homes. Researchers at the National Renewable Energy Laboratory (NREL) have developed models for evaluating the thermal performance of walls in existing homes that will improve the accuracy of building energy simulation tools when predicting potential energy savings of existing homes. Uninsulated walls are typical in older homes where the wall cavities were not insulated during construction or where the insulating material has settled. Accurate calculation of heat transfer through building enclosures will help determine the benefit of energy efficiency upgrades in order to reduce energy consumption in older American homes. NREL performed detailed computational fluid dynamics (CFD) analysis to quantify the energy loss/gain through the walls and to visualize different airflow regimes within the uninsulated cavities. The effects of ambient outdoor temperature, radiative properties of building materials, and insulation level were investigated. The study showed that multi-dimensional airflows occur in walls with uninsulated cavities and that the thermal resistance is a function of the outdoor temperature - an effect not accounted for in existing building energy simulation tools. The study quantified the difference between CFD prediction and the approach currently used in building energy simulation tools over a wide range of conditions. For example, researchers found that CFD predicted lower heating loads and slightly higher cooling loads. Implementation of CFD results into building energy simulation tools such as DOE2 and EnergyPlus will likely reduce the predicted heating load of homes. Researchers also determined that a small air gap in a partially insulated cavity can lead to a significant reduction in thermal resistance. For instance, a 4-in. tall air gap (Figure 1a) led to a 15% reduction in resistance. Similarly, a 2-ft tall air gap (Figure 1c) led to 54% reduction in thermal resistance. NREL researchers plan to extend this study to include additional wall configurations, and also to evaluate the performance of attic spaces with different insulation levels. NREL's objective is to address each potential issue that leads to inaccuracies in building energy simulation tools to improve the predictions.

  9. Status of the International Neutron Cross-Section Standards File

    SciTech Connect (OSTI)

    Pronyaev, Vladimir G. [International Atomic Energy Agency, Vienna (Austria); Badikov, Sergei A.; Gai, Evgeny V. [Institute of Physics and Power Engineering (Russian Federation); Chen Zhenpeng [Tsinghua University (China); Carlson, Allan D. [National Institute of Standards and Technology (United States); Hale, Gerald M. [Los Alamos National Laboratory (United States); Hambsch, Franz-Josef [Institute for Reference Materials and Measurements (Belgium); Hofmann, Hartmut M. [Universitaet Erlangen-Nuernberg (Germany); Larson, Nancy M. [Oak Ridge National Laboratory (United States); Smith, Donald L. [Argonne National Laboratory (United States); Oh, Soo-Youl [Korea Atomic Energy Research Institute (Korea, Republic of); Tagesen, Siegfried; Vonach, Herbert [Institute for Isotopenforschung (Austria); Kernphysik der Universitaet Vienna (Austria)

    2005-05-24T23:59:59.000Z

    A report is given of the progress achieved in an IAEA Co-ordinated Research Project (CRP) to improve the cross-section standards. The objectives of the CRP, started in 2002, were initially the understanding of the origin of the strong uncertainty reduction in R-matrix model fits and the improvement of the evaluation methodology. These aims were extended in 2003 to the preparation of new evaluations for the standard 6Li(n,t), 10B(n,{alpha}), 10B(n,{alpha}1), 197Au(n,{gamma}), 235U(n,f), and 238U(n,f) reactions. The methodology, codes, and experimental database developed by Poenitz and Hale for the ENDF/B-VI standards evaluation were taken as the basis for the new evaluation. The major results achieved by the CRP participants include the testing and intercomparison of a number of codes that can be used in the standards evaluation, updating the database of experimental results, analysis of the reasons leading to the strong uncertainty reduction in model fits, and a study of the bias in evaluated data caused by the Peelles's Pertinent Puzzle (PPP) effect, which has been widely discussed in the nuclear data community since the ENDF/B-VI standards evaluation was completed. Preliminary results of the new standards evaluation are shown. The use of the new 235U(n,f) cross section leads to better consistency in calculations of some important integral experiments.

  10. Neutron cross section standards and instrumentation. Annual report

    SciTech Connect (OSTI)

    Wasson, O.A.

    1993-07-01T23:59:59.000Z

    The objective of this interagency program is to provide accurate neutron interaction measurements for the US Department of Energy nuclear programs which include waste disposal, fusion, safeguards, defense, fission, and personnel protection. These measurements are also useful to other energy programs which indirectly use the unique properties of the neutron for diagnostic and analytical purposes. The work includes the measurement of reference cross sections and related neutron data employing unique facilities and capabilities at NIST and other laboratories as required; leadership and participation in international intercomparisons and collaborations; the preservation of standard reference deposits and the development of improved neutron detectors and measurement methods. A related and essential element of the program is critical evaluation of neutron interaction data including international coordinations. Data testing of critical data for important applications is included. The program is jointly supported by the Department of Energy and the National Institute of Standards and Technology. This report from the National Institute of Standards and Technology contains a summary of the accomplishments of the Neutron Cross Section Standards and Instrumentation Project during the third year of this three-year interagency agreement. The proposed program and required budget for the following three years are also presented. The program continues the shifts in priority instituted in order to broaden the program base.

  11. Deeply virtual Compton Scattering cross section measured with CLAS

    SciTech Connect (OSTI)

    Guegan, Baptistse [Institut de Physique Nucleaire, Orsay

    2014-09-01T23:59:59.000Z

    The Generalized Parton Distributions (GPDs) provide a new description of nucleon structure in terms of its elementary constituents, the quarks and the gluons. Including and extending the information provided by the form factors and the parton distribution functions, they describe the correlation between the transverse position and the longitudinal momentum fraction of the partons in the nucleon. Deeply Virtual Compton Scattering (DVCS), the electroproduction of a real photon on a single quark in the nucleon eN --> e'N'g, is the exclusive process most directly interpretable in terms of GPDs. A dedicated experiment to study DVCS with the CLAS detector at Jefferson Lab has been carried out using a 5.9-GeV polarized electron beam and an unpolarized hydrogen target, allowing us to collect DVCS events in the widest kinematic range ever explored in the valence region : 1.0 < Q2 < 4.6 GeV2, 0.1 < xB < 0.58 and 0.09 < -t < 2.0 GeV2. In this paper, we show preliminary results of unpolarized cross sections and of polarized cross section differences for the DVCS channel.

  12. Validation of a cross-section interface for PARCS

    SciTech Connect (OSTI)

    Staalek, M.; Demaziere, C. [Dept. of Nuclear Engineering, Chalmers Univ. of Technology, 412 96 Goeteborg (Sweden)

    2006-07-01T23:59:59.000Z

    This paper deals with the validation of a cross-section interface for the PARCS code. Such an interface, of which the development is reported in [1], allows providing realistic sets of material constants to PARCS, so that the full dependence of these data on history variables, instantaneous variables, and exposure can be accounted for. In order to check the proper implementation of this interface, the PARCS code was benchmarked against actual plant data (relative power distribution throughout the core and criticality condition). For that purpose, the Swedish Ringhals-3 Pressurized Water Reactor was considered. Different fuel cycles and within each cycle different core exposures were investigated. The cross-section data for each fuel/reflector assembly constituting the considered cores were created accordingly. The spatial distributions of the instantaneous conditions, of the history effects, as well as of the burnup, were taken from the results of SIMULATE-3 calculations. It was found that PARCS was able to reproduce the relative distribution of the power within the core. Both the measured axial and radial power profiles were correctly calculated by PARCS. On the average, the deviation between the calculated and measured power distributions is within acceptable limits. Concerning the determination of the core criticality, the deviation of the effective multiplication factor from unity is typically within {+-}200 pcm. (authors)

  13. Effect of strongly coupled plasma on photoionization cross section

    SciTech Connect (OSTI)

    Das, Madhusmita, E-mail: msdas@barc.gov.in [Department of Physics, Indian Institute of Technology, Powai, Mumbai 400076, India and Theoretical Physics Division, Bhabha Atomic Research Center, Mumbai 400085 (India)] [Department of Physics, Indian Institute of Technology, Powai, Mumbai 400076, India and Theoretical Physics Division, Bhabha Atomic Research Center, Mumbai 400085 (India)

    2014-01-15T23:59:59.000Z

    The effect of strongly coupled plasma on the ground state photoionization cross section is studied. In the non relativistic dipole approximation, cross section is evaluated from bound-free transition matrix element. The bound and free state wave functions are obtained by solving the radial Schrodinger equation with appropriate plasma potential. We have used ion sphere potential (ISP) to incorporate the plasma effects in atomic structure calculation. This potential includes the effect of static plasma screening on nuclear charge as well as the effect of confinement due to the neighbouring ions. With ISP, the radial equation is solved using Shooting method approach for hydrogen like ions (Li{sup +2}, C{sup +5}, Al{sup +12}) and lithium like ions (C{sup +3}, O{sup +5}). The effect of strong screening and confinement is manifested as confinement resonances near the ionization threshold for both kinds of ions. The confinement resonances are very much dependent on the edge of the confining potential and die out as the plasma density is increased. Plasma effect also results in appearance of Cooper minimum in lithium like ions, which was not present in case of free lithium like ions. With increasing density the position of Cooper minimum shifts towards higher photoelectron energy. The same behaviour is also true for weakly coupled plasma where plasma effect is modelled by Debye-Huckel potential.

  14. CROSS SECTION EVALUATIONS FOR ENDF/B-VII.

    SciTech Connect (OSTI)

    HERMAN, M.; ROCHMAN, D.; OBLOZINSKY, P.

    2006-06-05T23:59:59.000Z

    This is the final report of the work performed under the LANL contract on neutron cross section evaluations for ENDF/B-VII (April 2005-May 2006). The purpose of the contract was to ensure seamless integration of the LANL neutron cross section evaluations in the new ENDF/B-VII library. The following work was performed: (1) LANL evaluated data files submitted for inclusion in ENDF/B-VII were checked and, when necessary, formal formatting errors were corrected. As a consequence, ENDF checking codes, run on all LANL files, do not report any errors that would rise concern. (2) LANL dosimetry evaluations for {sup 191}Ir and {sup 193}Ir were completed to match ENDF requirements for the general purpose library suitable for transport calculations. A set of covariances for both isotopes is included in the ENDF files. (3) Library of fission products was assembled and successfully tested with ENDF checking codes, processed with NJOY-99.125 and simple MCNP calculations. (4) KALMAN code has been integrated with the EMPIRE system to allow estimation of covariances based on the combination of measurements and model calculations. Covariances were produced for 155,157-Gd and also for 6 remaining isotopes of Gd.

  15. Efficiency and accuracy of the perturbation response coefficient generation method for whole core comet calculations in BWR and CANDU configurations

    SciTech Connect (OSTI)

    Zhang, D.; Rahnema, F. [Georgia Institute of Technology, 770 State Street NW, Atlanta, GA 30332-0745 (United States)

    2013-07-01T23:59:59.000Z

    The coarse mesh transport method (COMET) is a highly accurate and efficient computational tool which predicts whole-core neutronics behaviors for heterogeneous reactor cores via a pre-computed eigenvalue-dependent response coefficient (function) library. Recently, a high order perturbation method was developed to significantly improve the efficiency of the library generation method. In that work, the method's accuracy and efficiency was tested in a small PWR benchmark problem. This paper extends the application of the perturbation method to include problems typical of the other water reactor cores such as BWR and CANDU bundles. It is found that the response coefficients predicted by the perturbation method for typical BWR bundles agree very well with those directly computed by the Monte Carlo method. The average and maximum relative errors in the surface-to-surface response coefficients are 0.02%-0.05% and 0.06%-0.25%, respectively. For CANDU bundles, the corresponding quantities are 0.01%-0.05% and 0.04% -0.15%. It is concluded that the perturbation method is highly accurate and efficient with a wide range of applicability. (authors)

  16. Applying Section 404(r) of the Clean Water Act to Federal Projects...

    Energy Savers [EERE]

    projects that may be subject to Section 404(r) of the Clean Water Act (Federal Water Pollution Control Act, as amended). Guidance on Applying Section 404(r) of the Clean Water Act...

  17. Draft Guidance for Section 242 of the Energy Policy Act of 2005...

    Office of Environmental Management (EM)

    Draft Guidance for Section 242 of the Energy Policy Act of 2005 - Hydroelectric Production Incentive Program - July 2014 Draft Guidance for Section 242 of the Energy Policy Act of...

  18. MA 266 Lecture 6 Section 2.3 Modeling with First Order Equations

    E-Print Network [OSTI]

    Section 2.3 Modeling with First Order Equations. In this section, we consider several ... WWW M mlakg J Oil/ma l o In a more general model,. "GKQW MW§ LVN?

  19. Charge exchange and ionization cross sections of H{sup +}+H collision in dense quantum plasmas

    SciTech Connect (OSTI)

    Zhang, Ling-yu; Qi, Xin; Zhao, Xiao-ying; Meng, Dong-yuan; Xiao, Guo-qing [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China and University of Chinese Academy of Sciences, Beijing 100049 (China)] [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China and University of Chinese Academy of Sciences, Beijing 100049 (China); Duan, Wen-shan [Joint Laboratory of Atomic and Molecular Physics of NWNU and IMP CAS, Northwest Normal University, Lanzhou, Gansu 730070 (China)] [Joint Laboratory of Atomic and Molecular Physics of NWNU and IMP CAS, Northwest Normal University, Lanzhou, Gansu 730070 (China); Yang, Lei [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China and University of Chinese Academy of Sciences, Beijing 100049 (China) [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China and University of Chinese Academy of Sciences, Beijing 100049 (China); Department of Physics, Lanzhou University, Lanzhou 730000 (China)

    2013-11-15T23:59:59.000Z

    The plasma screening effects of dense quantum plasmas on H{sup +}+H charge exchange and ionization cross sections are calculated by the classical trajectory Monte Carlo method. For charge exchange cross sections, it is found that the screening effects reduce cross sections slightly in weak screening conditions. However, cross sections are reduced substantially in strong screening conditions. For ionization cross sections, with the increase of screening effects, cross sections for low energies increase more rapidly than those for high energies. When the screening effects are strong enough, it is found that ionization cross sections decrease with the increase of incident H{sup +} energy. In addition, the cross sections have been compared with those in weakly coupled plasmas. It is found that in weak screening conditions, plasma screening effects in the two plasmas are approximately the same, while in strong screening conditions, screening effects of dense quantum plasmas are stronger than those of weakly coupled plasmas.

  20. SECTION 595 WRDA 1999, AS AMENDED IDAHO, MONTANA, RURAL NEVADA, NEW MEXICO,

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 595 ­ WRDA 1999, AS AMENDED IDAHO, MONTANA, RURAL NEVADA, NEW MEXICO, RURAL UTAH, rural Nevada, New Mexico, rural Utah, and Wyoming pursuant to Section 595 of the Water Resources

  1. SECTION 595 WRDA 1999, AS AMENDED IDAHO, MONTANA, RURAL NEVADA, NEW MEXICO,

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 595 ­ WRDA 1999, AS AMENDED IDAHO, MONTANA, RURAL NEVADA, NEW MEXICO, RURAL UTAH-Federal interests in Idaho, Montana, rural Nevada, New Mexico, rural Utah, and Wyoming pursuant to Section 595

  2. Infrared Safety in Factorized Hard Scattering Cross-Sections

    E-Print Network [OSTI]

    Andrew Hornig; Christopher Lee; Grigory Ovanesyan

    2009-05-13T23:59:59.000Z

    The rules of soft-collinear effective theory can be used naively to write hard scattering cross-sections as convolutions of separate hard, jet, and soft functions. One condition required to guarantee the validity of such a factorization is the infrared safety of these functions in perturbation theory. Using e+e- angularity distributions as an example, we propose and illustrate an intuitive method to test this infrared safety at one loop. We look for regions of integration in the sum of Feynman diagrams contributing to the jet and soft functions where the integrals become infrared divergent. Our analysis is independent of an explicit infrared regulator, clarifies how to distinguish infrared and ultraviolet singularities in pure dimensional regularization, and demonstrates the necessity of taking zero-bins into account to obtain infrared-safe jet functions.

  3. Azimuthal asymmetries in the unpolarized SIDIS cross section at COMPASS

    E-Print Network [OSTI]

    Giulio Sbrizzai for the COMPASS Collaboration

    2011-01-24T23:59:59.000Z

    The study of the spin structure of the nucleon and of the effects rising from the quarks transverse momentum are part of the scientific program of COMPASS, a fixed target experiment at the CERN SPS. The azimuthal asymmetries which appear in the cross-section of SIDIS off unpolarized targets can give insights on the intrinsic momentum structure of the nucleon and on the possible correlation between transverse spin and transverse momentum of the quarks. Here we present the new results for these asymmetries obtained from the COMPASS data collected with a 160 GeV/c positive muon beam impinging on a $^6LiD$ target. The asymmetries are measured for both positive and negative hadrons, and their dependence on several kinematical variable has been studied

  4. AFCI-2.0 Library of Neutron Cross Section Covariances

    SciTech Connect (OSTI)

    Herman, M.; Herman,M.; Oblozinsky,P.; Mattoon,C.; Pigni,M.; Hoblit,S.; Mughabghab,S.F.; Sonzogni,A.; Talou,P.; Chadwick,M.B.; Hale.G.M.; Kahler,A.C.; Kawano,T.; Little,R.C.; Young,P.G.

    2011-06-26T23:59:59.000Z

    Neutron cross section covariance library has been under development by BNL-LANL collaborative effort over the last three years. The primary purpose of the library is to provide covariances for the Advanced Fuel Cycle Initiative (AFCI) data adjustment project, which is focusing on the needs of fast advanced burner reactors. The covariances refer to central values given in the 2006 release of the U.S. neutron evaluated library ENDF/B-VII. The preliminary version (AFCI-2.0beta) has been completed in October 2010 and made available to the users for comments. In the final 2.0 release, covariances for a few materials were updated, in particular new LANL evaluations for {sup 238,240}Pu and {sup 241}Am were adopted. BNL was responsible for covariances for structural materials and fission products, management of the library and coordination of the work, while LANL was in charge of covariances for light nuclei and for actinides.

  5. Section III, Division 5 - Development and Future Directions

    SciTech Connect (OSTI)

    D. K. Morton; R I Jetter; James E Nestell; T. D. Burchell; T L (Sam) Sham

    2012-07-01T23:59:59.000Z

    This paper provides commentary on a new division under Section III of the ASME Boiler and Pressure Vessel (BPV) Code. This new Division 5 has an issuance date of November 1, 2011 and is part of the 2011 Addenda to the 2010 Edition of the BPV Code. The new Division covers the rules for the design, fabrication, inspection and testing of components for high temperature nuclear reactors. Information is provided on the scope and need for Division 5, the structure of Division 5, where the rules originated, the various changes made in finalizing Division 5, and the future near-term and long-term expectations for Division 5 development. Portions of this paper were based on Chapter 17 of the Companion Guide to the ASME Boiler & Pressure Vessel Code, Fourth Edition, © ASME, 2012, Reference.

  6. Repair limits for hot-section components of gas turbines

    SciTech Connect (OSTI)

    Mattheij, J.H.G.

    1998-07-01T23:59:59.000Z

    Gas turbine components are subjected to high mechanical and thermal stresses. In addition, the environment in which they operate is often corrosive. Under these conditions, only one group of materials can be used, i.e., superalloys. Superalloys are alloys of nickel or cobalt that are strengthened by both a large number and volume of alloying elements: tantalum, titanium, tungsten and chromium for carbide precipitation for high temperature strength. Aluminum and titanium form an intermetallic precipitation phase that can highly increase creep resistance. Boron and zirconium increase the grain boundary strength. Characteristic properties of superalloys are: high tensile strength, high creep strength, fair ductility, and good corrosion resistance. This combination of properties, which exists also at high temperature, is unique for superalloys and, in consequence, gas turbine hot-section components are uniquely made of superalloys.

  7. Cross Section Evaluation Group shielding benchmark compilation. Volume II

    SciTech Connect (OSTI)

    Rose, P.F.; Roussin, R.W.

    1983-12-01T23:59:59.000Z

    At the time of the release of ENDF/B-IV in 1974, the Shielding Subcommittee had identified a series of 12 shielding data testing benchmarks (the SDT series). Most were used in the ENDF/B-IV data testing effort. A new concept and series was begun in the interim, the so-called Shielding Benchmark (SB) series. An effort was made to upgrade the SDT series as far as possible and to add new SB benchmarks. In order to be designated in the SB class, both an experiment and analysis must have been performed. The current recommended benchmark for Shielding Data Testing are listed. Until recently, the philosophy has been to include only citations to published references for shielding benchmarks. It is now our intention to provide adequate information in this volume for proper analysis of any new benchmarks added to the collection. These compilations appear in Section II, with the SB5 Fusion Reactor Shielding Benchmark as the first entry.

  8. COMBUSTION TURBINE (CT) HOT SECTION COATING LIFE MANAGEMENT

    SciTech Connect (OSTI)

    D. Gandy; R. Viswanathan; S. Cheruvu; K. Krzywosz

    2006-03-31T23:59:59.000Z

    The integrity of coatings used in hot section components of combustion turbines is crucial to the reliability of the buckets. This project was initiated in recognition of the need for predicting the life of coatings analytically, and non-destructively; correspondingly, four principal tasks were established. Task 1, with the objective of analytically developing stress, strain and temperature distributions in the bucket and thereby predicting thermal fatigue (TMF) damage for various operating conditions; Task 2 with the objective of developing eddy current techniques to measure both TMF damage and general degradation of coatings and, Task 3 with the objective of developing mechanism based algorithms. Task 4 is aimed at verifying analytical predictions from Task 1 and the NDE predictions from Task 3 against field observations.

  9. SCWR Once-Through Calculations for Transmutation and Cross Sections

    SciTech Connect (OSTI)

    ganda, francesco (090771)

    2012-07-01T23:59:59.000Z

    It is the purpose of this report to document the calculation of (1) the isotopic evolution and of (2) the 1-group cross sections as a function of burnup of the reference Super Critical Water Reactor (SCWR), in a format suitable for the Fuel Cycle Option Campaign Transmutation Data Library. The reference SCWR design was chosen to be that described in [McDonald, 2005]. Super Critical Water Reactors (SCWR) are intended to operate with super-critical water (i.e. H2O at a pressure above 22 MPa and a temperature above 373oC) as a cooling – and possibly also moderating – fluid. The main mission of the SCWR is to generate lower cost electricity, as compared to current standard Light Water Reactors (LWR). Because of the high operating pressure and temperature, SCWR feature a substantially higher thermal conversion efficiency than standard LWR – i.e. about 45% versus 33%, mostly due to an increase in the exit water temperature from ~300oC to ~500oC – potentially resulting in a lower cost of generated electricity. The coolant remains single phase throughout the reactor and the energy conversion system, thus eliminating the need for pressurizers, steam generators, steam separators and dryers, further potentially reducing the reactor construction capital cost. The SCWR concept presented here is based on existing LWR technology and on a large number of existing fossil-fired supercritical boilers. However, it was concluded in [McDonald, 2005], that: “Based on the results of this study, it appears that the reference SCWR design is not feasible.” This conclusion appears based on the strong sensitivity of the design to small deviations in nominal conditions leading to small effects having a potentially large impact on the peak cladding temperature of some fuel rods. “This was considered a major feasibility issue for the SCWR” [McDonald, 2005]. After a description of the reference SCWR design, the Keno V 3-D single assembly model used for this analysis, as well as the calculated results, are presented. Additionally, the follwing information, presented in the appendixes, is intended to provide enough guidance that a researcher repeating the same task in the future should be able to obtain a vector of nuclei and cross sections ready for insertion into the transmutation library without any need for further instructions: (1) Complete TRITON/KENO-V input used for the analysis; (2) Inputs and detailed description of the usage of the OPUS utility, used to postproces and to extract the nuclei concentrations for the transmutation library; (3) Inputs and detailed description of the usage of the XSECLIST utility, used to postproces and to extract the 1-group cross sections for the transmutation library; (4) Details of an ad-hoc utility program developed to sort the nuclei and cross sections for the transmutation library.

  10. AFCI-2.0 Neutron Cross Section Covariance Library

    SciTech Connect (OSTI)

    Herman, M.; Herman, M; Oblozinsky, P.; Mattoon, C.M.; Pigni, M.; Hoblit, S.; Mughabghab, S.F.; Sonzogni, A.; Talou, P.; Chadwick, M.B.; Hale, G.M.; Kahler, A.C.; Kawano, T.; Little, R.C.; Yount, P.G.

    2011-03-01T23:59:59.000Z

    The cross section covariance library has been under development by BNL-LANL collaborative effort over the last three years. The project builds on two covariance libraries developed earlier, with considerable input from BNL and LANL. In 2006, international effort under WPEC Subgroup 26 produced BOLNA covariance library by putting together data, often preliminary, from various sources for most important materials for nuclear reactor technology. This was followed in 2007 by collaborative effort of four US national laboratories to produce covariances, often of modest quality - hence the name low-fidelity, for virtually complete set of materials included in ENDF/B-VII.0. The present project is focusing on covariances of 4-5 major reaction channels for 110 materials of importance for power reactors. The work started under Global Nuclear Energy Partnership (GNEP) in 2008, which changed to Advanced Fuel Cycle Initiative (AFCI) in 2009. With the 2011 release the name has changed to the Covariance Multigroup Matrix for Advanced Reactor Applications (COMMARA) version 2.0. The primary purpose of the library is to provide covariances for AFCI data adjustment project, which is focusing on the needs of fast advanced burner reactors. Responsibility of BNL was defined as developing covariances for structural materials and fission products, management of the library and coordination of the work; LANL responsibility was defined as covariances for light nuclei and actinides. The COMMARA-2.0 covariance library has been developed by BNL-LANL collaboration for Advanced Fuel Cycle Initiative applications over the period of three years, 2008-2010. It contains covariances for 110 materials relevant to fast reactor R&D. The library is to be used together with the ENDF/B-VII.0 central values of the latest official release of US files of evaluated neutron cross sections. COMMARA-2.0 library contains neutron cross section covariances for 12 light nuclei (coolants and moderators), 78 structural materials and fission products, and 20 actinides. Covariances are given in 33-energy groups, from 10?5 eV to 19.6 MeV, obtained by processing with LANL processing code NJOY using 1/E flux. In addition to these 110 files, the library contains 20 files with nu-bar covariances, 3 files with covariances of prompt fission neutron spectra (238,239,240-Pu), and 2 files with mu-bar covariances (23-Na, 56-Fe). Over the period of three years several working versions of the library have been released and tested by ANL and INL reactor analysts. Useful feedback has been collected allowing gradual improvements of the library. In addition, QA system was developed to check basic properties and features of the whole library, allowing visual inspection of uncertainty and correlations plots, inspection of uncertainties of integral quantities with independent databases, and dispersion of cross sections between major evaluated libraries. The COMMARA-2.0 beta version of the library was released to ANL and INL reactor analysts in October 2010. The final version, described in the present report, was released in March 2011.

  11. COMBUSTION TURBINE (CT) HOT SECTION COATING LIFE MANAGEMENT

    SciTech Connect (OSTI)

    R. Viswanathan; D. Gandy; K. Krzywosz; S. Cheruvu; E. Wan

    2002-12-02T23:59:59.000Z

    The integrity of coatings used in hot section components of combustion turbine is crucial to the reliability of the buckets. This project was initiated in recognition of the need for predicting the life of coatings analytically, and non destructively; correspondingly, three principal tasks were established. Task 1, with the objective of analytically developing stress, strain and temperature distributions in the bucket and thereby predicting thermal fatigue (TMF) damage for various operating conditions; Task 2 with the objective of developing eddy current techniques to measure both TMF damage and general degradation of coatings and, Task 3, with the objective of developing mechanism based algorithms. This report is a record of the progress to date on these 3 key tasks. Two supporting tasks relating to field validation (Task 4) and economic analysis (Task 5) have not yet been initiated.

  12. Development of Thin Section Zinc Die Casting Technology

    SciTech Connect (OSTI)

    Goodwin, Frank [International Lead Zinc Research Org., Inc.] [International Lead Zinc Research Org., Inc.

    2013-10-31T23:59:59.000Z

    A new high fluidity zinc high pressure die casting alloy, termed the HF alloy, was developed during laboratory trials and proven in industrial production. The HF alloy permits castings to be achieved with section thicknesses of 0.3 mm or less. Technology transfer activities were conducted to develop usage of the HF high fluidity alloy. These included production of a brochure and a one-hour webinar on the HF alloy. The brochure was then sent to 1,184 product designers in the Interzinc database. There was excellent reception to this mailing, and from this initial contact 5 technology transfer seminars were conducted for 81 participants from 30 companies across a wide range of business sectors. Many of the successful applications to date involve high quality surface finishes. Design and manufacturing assistance was given for development of selected applications.

  13. Extended-length power sections improve PDM drilling

    SciTech Connect (OSTI)

    Moles, H. [Baker Hughes INTEQ, Aberdeen (United Kingdom)

    1995-12-01T23:59:59.000Z

    Since being introduced in the 1960s, downhole positive displacement motors (PDMs) have evolved steadily from early applications. Initially considered only for high-speed, medium-torque, initial directional kickoffs; and short, corrective directional operations, these tools were not expected to operate for more than a few hours at a time. Progressive improvements have led to tools that are capable of extended runs in a variety of configurations. Current generation PDMs have a broad range of applications and include fully steerable systems for directional or horizontal drilling, and instrumented motors incorporating formation evaluation measurement-while-drilling (FEMWD) systems for geological steering and reservoir navigation. Design improvements also expanded PDM applications to include hole sections traditionally drilled with conventional rotary-driven bottomhole assemblies (BHAs). This paper reviews these new motor designs and provides case histories of their performance.

  14. The stellar (n,gamma) cross section of 62Ni

    E-Print Network [OSTI]

    H. Nassar; M. Paul; I. Ahmad; D. Berkovits; M. Bettan; P. Collon; S. Dababneh; S. Ghelberg; J. P. Greene; A. Heger; M. Heil; D. J. Henderson; C. L. Jiang; F. Kaeppeler; H. Koivisto; S. O'Brien; R. C. Pardo; N. Patronis; T. Pennington; R. Plag; K. E. Rehm; R. Reifarth; R. Scott; S. Sinha; X. Tang; R. Vondrasek

    2005-03-12T23:59:59.000Z

    The 62Ni(n,gamma)63Ni(t_1/2=100+-2 yrs) reaction plays an important role in the control of the flow path of the slow neutron-capture (s-) nucleosynthesis process. We have measured for the first time the total cross section of this reaction for a quasi-Maxwellian (kT = 25 keV) neutron flux. The measurement was performed by fast-neutron activation, combined with accelerator mass spectrometry to detect directly the 63Ni product nuclei. The experimental value of 28.4+-2.8 mb, fairly consistent with a recent theoretical estimate, affects the calculated net yield of 62Ni itself and the whole distribution of nuclei with 62

  15. Differential cross section for neutron-proton bremsstrahlung

    E-Print Network [OSTI]

    Y. Safkan; T. Akdogan; W. A. Franklin; J. L. Matthews; W. M. Schmitt; V. V. Zelevinsky; P. A. M. Gram; T. N. Taddeucci; S. A. Wender; S. F. Pate

    2007-03-21T23:59:59.000Z

    The neutron-proton bremsstrahlung process $(np \\to np\\gamma)$ is known to be sensitive to meson exchange currents in the nucleon-nucleon interaction. The triply differential cross section for this reaction has been measured for the first time at the Los Alamos Neutron Science Center, using an intense, pulsed beam of up to 700 MeV neutrons to bombard a liquid hydrogen target. Scattered neutrons were observed at six angles between 12$^\\circ$ and 32$^\\circ$, and the recoil protons were observed in coincidence at 12$^\\circ$, 20$^\\circ$, and 28$^\\circ$ on the opposite side of the beam. Measurement of the neutron and proton energies at known angles allows full kinematic reconstruction of each event. The data are compared with predictions of two theoretical calculations, based on relativistic soft-photon and non-relativistic potential models.

  16. Federal Register Notice EPAct 2005 Section 242 Hydroelectric Incentive Program: January 2015

    Broader source: Energy.gov [DOE]

    Federal Register Notice for the EPAct 2005 Section 242 Hydroelectric Incentive Program application period announcement: January, 2015.

  17. Strategic petroleum reserve (SPR) geological site characterization report, Bayou Choctaw Salt Dome. Sections I and II

    SciTech Connect (OSTI)

    Hogan, R.G. (ed.)

    1981-03-01T23:59:59.000Z

    This report comprises two sections: Bayou Choctaw cavern stability issues, and geological site characterization of Bayou Choctaw. (DLC)

  18. Assessment of the precision and accuracy of laser ablation-ICPMS analyses in the Fluids Research Laboratory within the Department of

    E-Print Network [OSTI]

    Bodnar, Robert J.

    1 Assessment of the precision and accuracy of laser ablation-ICPMS analyses in the Fluids Research describes results of laser ablation ICP-MS analyses of several standards of known composition conducted (AMS) for reduction of laser ablation ICPMS data. In Laser-Ablation-ICPMS in the Earth Sciences

  19. Intermolecular forces and fixed-node diffusion Monte Carlo: A brute force test of accuracies for He2 and HeLiH

    E-Print Network [OSTI]

    Anderson, James B.

    in the direction of developing and testing alternative methods for predicting accurate potential energy surfaces energy of van der Waals systems was investigated. Tests were carried out by simulating the electronic indicating a high accuracy for the fixed-node approximation. Also, our interaction energies for He

  20. SECTION 595 WRDA 1999, AS AMENDED IDAHO, MONTANA, RURAL NEVADA, NEW MEXICO,

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 595 ­ WRDA 1999, AS AMENDED IDAHO, MONTANA, RURAL NEVADA, NEW MEXICO, RURAL UTAH-Federal interests in Idaho, Montana, rural Nevada, New Mexico, rural Utah, and Wyoming pursuant to Section 595 to, NEPA and Section 401 of the Federal Water Pollution Control Act (33 U.S.C. 1341). #12;