7,582 research outputs found

    Improved test of Lorentz Invariance in Electrodynamics using Rotating Cryogenic Sapphire Oscillators

    Get PDF
    We present new results from our test of Lorentz invariance, which compares two orthogonal cryogenic sapphire microwave oscillators rotating in the lab. We have now acquired over 1 year of data, allowing us to avoid the short data set approximation (less than 1 year) that assumes no cancelation occurs between the κ~e\tilde{\kappa}_{e-} and κ~o+\tilde{\kappa}_{o+} parameters from the photon sector of the standard model extension. Thus, we are able to place independent limits on all eight κ~e\tilde{\kappa}_{e-} and κ~o+\tilde{\kappa}_{o+} parameters. Our results represents up to a factor of 10 improvement over previous non rotating measurements (which independently constrained 7 parameters), and is a slight improvement (except for κ~eZZ\tilde{\kappa}_{e-}^{ZZ}) over results from previous rotating experiments that assumed the short data set approximation. Also, an analysis in the Robertson-Mansouri-Sexl framework allows us to place a new limit on the isotropy parameter PMM=δβ+1/2P_{MM}=\delta-\beta+{1/2} of 9.4(8.1)×10119.4(8.1)\times10^{-11}, an improvement of a factor of 2.Comment: Accepted for publication in Phys. Rev.

    The Role of Relapse Prevention and Goal Setting in Training Transfer Enhancement

    Get PDF
    This article reviews the effect of two post-training transfer interventions (relapse prevention [RP] and goal setting [GS]) on trainees’ ability to apply skills gained in a training context to the workplace. Through a review of post-training transfer interventions literature, the article identifies a number of key issues that remain unresolved or underexplored, for example, the inconsistent results on the impact of RP on transfer of training, the lack of agreement on which GS types are more efficient to improve transfer performance, the lack of clarity about the distinction between RP and GS, and the underlying process through which these two post-training transfer interventions influence transfer of training. We offer some recommendations to overcome these problems and also provide guidance for future research on transfer of training

    Tradition and Prudence in Locke's Exceptions to Toleration

    Get PDF
    Why did Locke exclude Catholics and atheists from toleration? Not, I contend, because he was trapped by his context, but because his prudential approach and practica ljudgments led him to traditiona ltexts. I make this argumentfirst by outlining the connections among prudential exceptionality, practical judgments, and traditional texts. I then describe important continuities betweenc onventional English understandings of the relationship between state and religion and Locke's writings on toleration, discuss Locke's conception of rights, and illustrate his use of prudential exceptions and distinctions. I conclude by arguing that Locke's problems are relevant to assessingc ontemporary liberal discussions of tolerationa nd the separation of state and religion that lean heavily on practical justification

    Amino Acid Contents of Meteorite Mineral Separates

    Get PDF
    Indigenous amino acids have been found indigenous all 8 carbonaceous chondrite groups. However, the abundances, structural, enantiomeric and isotopic compositions of amino acids differ significantly among meteorites of different groups and petrologic types. This suggests that parent-body conditions (thermal or aqueous alteration), mineralogy, and the preservation of amino acids are linked. Previously, elucidating specific relationships between amino acids and mineralogy was not possible because the samples analyzed for amino acids were much larger than the scale at which petrologic heterogeneity is observed (sub mm-scale differences corresponding to sub-mg samples). Recent advances in amino acid measurements and application of techniques such as high resolution X-ray diffraction (HR-XRD) and scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) for mineralogical characterizations allow us to perform coordinated analyses on the scale at which mineral heterogeneity is observed

    Test of Lorentz Invariance in Electrodynamics Using Rotating Cryogenic Sapphire Microwave Oscillators

    Full text link
    We present the first results from a rotating Michelson-Morley experiment that uses two orthogonally orientated cryogenic sapphire resonator-oscillators operating in whispering gallery modes near 10 GHz. The experiment is used to test for violations of Lorentz Invariance in the frame-work of the photon sector of the Standard Model Extension (SME), as well as the isotropy term of the Robertson-Mansouri-Sexl (RMS) framework. In the SME we set a new bound on the previously unmeasured κ~eZZ\tilde{\kappa}_{e-}^{ZZ} component of 2.1(5.7)×10142.1(5.7)\times10^{-14}, and set more stringent bounds by up to a factor of 7 on seven other components. In the RMS a more stringent bound of 0.9(2.0)×1010-0.9(2.0)\times 10^{-10} on the isotropy parameter, PMM=δβ+1/2P_{MM}=\delta - \beta + {1/2} is set, which is more than a factor of 7 improvement. More detailed description of the experiment and calculations can be found in: hep-ph/0506200Comment: Final published version, 4 pages, references adde

    An Investigation of Coach Behaviors, Goal Motives, and Implementation Intentions as Predictors of Well-Being in Sport

    Get PDF
    The present study aimed to expand upon Smith, Ntoumanis, and Duda’s (2007) research by investigating the influence of coach behaviors and implementation intentions on goal striving in sport. Structural equation modeling analysis with a sample of 108 athletes revealed coach behaviors as predictors of goal motives, which in turn predicted psychological well-being after 8 weeks. Supplementary regression analyses showed no interaction between autonomous goal motives and implementation intentions; however, a synergistic effect was identified for controlled goal motives such that controlled motives furnished with implementation intentions resulted in lower well-being than controlled motives alone. In further analyses, the motives underlying an implementation intention were found to mediate the paths from goal motives to well-being. The findings are discussed in terms of the roles played by goal motives, implementation intentions, and implementation intention motives during goal striving

    Keeping the Flames at Bay: The Interplay between Federal Oversight and State Politics in Tucson’s Mexican American Studies Program

    Get PDF
    In the wealth of literature discussing Tucson Unified School District’s (TUSD) Mexican American Studies program (MAS), the focus has remained primarily on the political events surrounding the elimination of the highly successful MAS program. The federal desegregation case still pending in Tucson is rarely mentioned and never discussed in depth. In this article, we aim to address this gap in the literature by presenting two stories. First, we look at the story of the TUSD desegregation case originally filed in 1974 and its progress toward unitary status. Next, we look at the story of political scheming and maneuvering in Tucson and Arizona aimed at eliminating MAS. Finally, we discuss the impact of federal court oversight in the face of highly oppositional political forces and how equity and equality may be protected after TUSD is granted unitary status
    corecore