2,798 research outputs found

    Hybrid thermocouple development program

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    The design and development of a hybrid thermocouple, having a segmented SiGe-PbTe n-leg encapsulated within a hollow cylindrical p-SiGe leg, is described. Hybrid couple efficiency is calculated to be 10% to 15% better than that of a all-SiGe couple. A preliminary design of a planar RTG, employing hybrid couples and a water heat pipe radiator, is described as an example of a possible system application. Hybrid couples, fabricated initially, were characterized by higher than predicted resistance and, in some cases, bond separations. Couples made later in the program, using improved fabrication techniques, exhibited normal resistances, both as-fabricated and after 700 hours of testing. Two flat-plate sections of the reference design thermoelectric converter were fabricated and delivered to NASA Lewis for testing and evaluation

    Oil and gas in Essex County, Ontario

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    Master of ScienceGeologyUniversity of Michiganhttp://deepblue.lib.umich.edu/bitstream/2027.42/101713/2/39015003262097.pd

    Partonic Energy Loss and the Drell-Yan Process

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    We examine the current status of the extraction of the rate of partonic energy loss in nuclei from A dependent data. The advantages and difficulties of using the Drell-Yan process to measure the energy loss of a parton traversing a cold nuclear medium are discussed. The prospects of using relatively low energy proton beams for a definitive measurement of partonic energy loss are presented.Comment: 12 pages, 2 figure

    Juror First Votes in Criminal Trials

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    Our analysis of the voting behavior of over 3,000 jurors in felony cases tried in Los Angeles, Maricopa County, the District of Columbia, and the Bronx reveals that only in D.C. does a juror\u27s race appear to relate to how he or she votes. African-American jurors in D.C. appear more apt to vote not guilty on the jury\u27s first ballot in cases involving minority defendants charged with drug offenses. We find no evidence, however, that this effect survives into the jury\u27s final verdict

    Juror First Votes in Criminal Trials

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    Our analysis of the voting behavior of over 3,000 jurors in felony cases tried in Los Angeles, Maricopa County, the District of Columbia, and the Bronx reveals that only in D.C. does a juror\u27s race appear to relate to how he or she votes. African-American jurors in D.C. appear more apt to vote not guilty on the jury\u27s first ballot in cases involving minority defendants charged with drug offenses. We find no evidence, however, that this effect survives into the jury\u27s final verdict

    Juror First Votes in Criminal Trials

    Get PDF
    Our analysis of the voting behavior of over 3,000 jurors in felony cases tried in Los Angeles, Maricopa County, the District of Columbia, and the Bronx reveals that only in D.C. does a juror\u27s race appear to relate to how he or she votes. African-American jurors in D.C. appear more apt to vote not guilty on the jury\u27s first ballot in cases involving minority defendants charged with drug offenses. We find no evidence, however, that this effect survives into the jury\u27s final verdict

    Juror First Votes in Criminal Trials

    Get PDF
    Our analysis of the voting behavior of over 3,000 jurors in felony cases tried in Los Angeles, Maricopa County, the District of Columbia, and the Bronx reveals that only in D.C. does a juror\u27s race appear to relate to how he or she votes. African-American jurors in D.C. appear more apt to vote not guilty on the jury\u27s first ballot in cases involving minority defendants charged with drug offenses. We find no evidence, however, that this effect survives into the jury\u27s final verdict

    Why, what, and how? case study on law, risk, and decision making as necessary themes in built environment teaching

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    The paper considers (and defends) the necessity of including legal studies as a core part of built environment undergraduate and postgraduate curricula. The writer reflects upon his own experience as a lawyer working alongside and advising built environment professionals in complex land remediation and site safety management situations in the United Kingdom and explains how themes of liability, risk, and decision making can be integrated into a practical simulation in order to underpin more traditional lecture-based law teaching. Through reflection upon the writer's experiments with simulation-based teaching, the paper suggests some innovations that may better orientate law teaching to engage these themes and, thereby, enhance the relevance of law studies to the future needs of built environment professionals in practice.</p

    Probing Nucleon Strangeness with Neutrinos: Nuclear Model Dependences

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    The extraction of the nucleon's strangeness axial charge, Delta_s, from inclusive, quasielastic neutral current neutrino cross sections is studied within the framework of the plane-wave impulse approximation. We find that the value of Delta_s can depend significantly on the choice of nuclear model used in analyzing the quasielastic cross section. This model-dependence may be reduced by one order of magnitude when Delta_s is extracted from the ratio of total proton to neutron yields. We apply this analysis to the interpretation of low-energy neutrino cross sections and arrive at a nuclear theory uncertainty of plus/minus 0.03 on the value of Delta_s expected to be determined from the ratio of proton and neutron yields measured by the LSND collaboration. This error compares favorably with estimates of the SU(3)-breaking uncertainty in the value of Delta_s extracted from inclusive, polarized deep-inelastic structure function measurements. We also point out several general features of the quasielastic neutral current neutrino cross section and compare them with the analogous features in inclusive, quasielastic electron scattering.Comment: 40 pages (including 11 postscript figures), uses REVTeX and epsfig.st
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