11,379 research outputs found

    Quantum Monte Carlo Dynamics: the Stationary Phase Monte Carlo Path Integral Calculation of Finite Temperature Time Correlation Functions

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    We present a numerically exact procedure for the calculation of an important class of finite temperature quantum mechanical time correlation functions. The present approach is based around the stationary phase Monte Carlo (SPMC) method, a general mathematical tool for the calculation of high dimensional averages of oscillatory integrands. In the present context the method makes possible the direct numerical path integral calculation of real-time quantum dynamical quantities for times appreciably greater than the thermal time (βħ). Illustrative applications involving finite temperature anharmonic motion are presented. Issues of importance with respect to future applications are identified and discussed

    Janus and the Future of Collective Bargaining: Rhetorically Predicting a First Amendment Right to Negotiation

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    The importance of the U.S. Supreme Court ruling in Janus v. American Federation of State, County, and Municipal Employees has been widely recognized for its effect on reducing the power and influence of public unions. A close reading of the majority opinion provides a clue that compulsory collective bargaining itself may be settling into the court’s crosshairs. Collective bargaining is an important tool, by which labor can reduce the often-inherent power imbalance it has with ownership and management. Yet as this Article outlines, the interests of individual workers can often be at odds with those other workers workers, particularly those who do not feel the union represents their interests. This Article will explore the history of unions and collective bargaining, the variety of worker rights that are affected by compulsory collective bargaining, why the Supreme Court might choose to eliminate compulsory collective bargaining via the First Amendment, and what may ultimately replace it. or even the union itself. When the law designates a union as the exclusive bargaining agent for a group of workers, it prohibits individual workers from advocating for their own interests. As the U.S. Supreme Court recognized in Janus, this results in a substantial reduction of the rights o

    Climate profile for the McCallum Emria study area

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    March 1981.Includes bibliographical references (page 64)

    Development of climate profiles for reclamation

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    April 1981.Includes bibliographical references (page 58)

    Examining the Use of Engineering Internship Workplace Competency Assessments for Continuous Improvement

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    This study explored how workplace competency assessment data from internship studentsand their supervisors, collected by College of Engineering programs between fall 2001 throughfall 2011 are applied toward continuous improvement practices. The continuous improvementprocess is integral to the accreditation and evaluation of the engineering curriculum. This mixedmethods study examined three separate practices using internship workplace competencyassessment ratings in the continuous improvement process. The study examined how assessmentrankings of the internship students’ workplace competency strengths and weakness have changedfrom the 2001-05 assessment terms in the past accreditation cycle, to the 2006-11 assessmentterms of the most recent accreditation cycle. In addition, this study examined competencyachievement percentages related to the ABET Criterion 3 (a-k) outcomes across the sametimeline. The third part of the study investigated how workplace competency assessment data areused to support continuous improvement for program curricula in the College of Engineering.The intent of the study was to gain better understanding of how the workplace competencyassessment data has benefited the continuous improvement process that enhances studentlearning. The results can also provide suggestions to programs in the early stages of developingnew program evaluation techniques

    Selective reduction of APP-BACE1 activity improves memory via NMDA-NR2B receptor-mediated mechanisms in aged PDAPP mice

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    β-Amyloid (Aβ) accumulation is an early event of Alzheimer's disease (AD) pathogenesis. Inhibition of Aβ production by β-secretase (BACE) has been proposed as a potential therapeutic strategy for AD. However, BACE inhibitors lack specificity and have had limited clinical benefit. To better study the consequences of reducing BACE metabolism, specifically of APP, we used an antibody, 2B3, that binds to APP at the BACE cleavage site, inhibiting Aβ production. 2B3 was administered either directly into the lateral ventricles or by intraperitoneal injection to (platelet-derived growth factor promoter hAPP717V (PDAPP) mice and WT mice. 2B3 reduced soluble Aβ40 and βCTF (β-amyloid derived C-terminal fragment) and improved memory for object-in-place associations and working memory in a foraging task in PDAPP mice. 2B3 also normalized the phosphorylation of the N-methyl-D-aspartate receptor NR2B subunit and subsequent extracellular signal-regulated kinase signaling. The importance of this NR2B pathway for OiP memory was confirmed by administering the NR2B antagonist, Ro25-6981, to 18-month-old WT. In contrast, 2B3 impaired associative recognition memory in young WT mice. These data provide novel insights into the mechanism by which selective modulation of APP metabolism by BACE influences synaptic and cognitive processes in both normal mice and aged APP transgenic mice

    An experimental study of the rearrangements of valence protons and neutrons amongst single-particle orbits during double {\beta} decay in 100Mo

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    The rearrangements of protons and neutrons amongst the valence single-particle orbitals during double {\beta} decay of 100Mo have been determined by measuring cross sections in (d,p), (p,d), (3He,{\alpha}) and (3He,d) reactions on 98,100Mo and 100,102Ru targets. The deduced nucleon occupancies reveal significant discrepancies when compared with theoretical calculations; the same calculations have previously been used to determine the nuclear matrix element associated with the decay probability of double {\beta} decay of the 100Mo system.Comment: 18 pages, 13 figures, 37 pages of supplemental informatio

    Measuring the cost-effectiveness of treatments for people with multiple sclerosis: Beyond quality-adjusted life-years.

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    BACKGROUND: It is a familiar story. A promising multiple sclerosis (MS) treatment clears the three regulatory hurdles of safety, quality and efficacy, only to fall at the fourth: cost-effectiveness. This has led to concerns about the validity of the measures typically used to quantify treatment effects in cost-effectiveness analyses and in 2012, in the United Kingdom, the National Institute for Health and Care Excellence called for an improvement in the cost-effectiveness framework for assessing MS treatments. OBJECTIVE AND METHODS: This review describes what is meant by cost-effectiveness in health/social care funding decision-making, and usual practice for assessing treatment benefits. RESULTS: We detail the use of the quality-adjusted life-year (QALY) in resource allocation decisions, and set out limitations of this approach in the context of MS. CONCLUSION: We conclude by highlighting methodological and policy developments which should aid addressing these limitations

    Electronic Structure and Light-Induced Conductivity of a Transparent Refractory Oxide

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    Combined first-principles and experimental investigations reveal the underlying mechanism responsible for a drastic change of the conductivity (by 10 orders of magnitude) following hydrogen annealing and UV irradiation in a transparent oxide, 12CaO · 7Al2O3, found by Hayashi et al. [Nature (London) 419, 462 (2002).] The charge transport associated with photoexcitation of an electron from H- occurs by electron hopping.We identify the atoms participating in the hops, determine the exact paths for the carrier migration, estimate the temperature behavior of the hopping transport, and predict a way to enhance the conductivity by specific doping
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