2,547 research outputs found

    Seymour\u27s Teaching the Way of Jesus: Educating Christians for Faithful Living (Book Review)

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    A Review of Teaching the Way of Jesus: Educating Christians for Faithful Living, by Jack L. Seymour. Nashville, TN: Abingdon Press, 2014. 201 pp. $29.99. ISBN 9781462765056

    The autocorrelation of the Mobius function and Chowla's conjecture for the rational function field

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    We prove a function field version of Chowla's conjecture on the autocorrelation of the Mobius function in the limit of a large finite field.Comment: Added background details about discriminants and resultants, and more minor change

    For operation of the Computer Software Management and Information Center (COSMIC)

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    During the month of June, the Survey Research Center (SRC) at the University of Georgia designed new benefits questionnaires for computer software management and information center (COSMIC). As a test of their utility, these questionnaires are now used in the benefits identification process

    Modal Spectroscopy of Optoexcited Vibrations of a Micron-Scale On-Chip Resonator at Greater than 1 GHz Frequency

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    We analyze experimentally and theoretically >1 GHz optoexcited mechanical vibration in an on-chip micron-scaled sphere. Different eigen-mechanical modes are excited upon demand by the centrifugal radiation pressure of the optical whispering-gallery-mode, enabling an optomechanical modal spectroscopy investigation of many vibrational modes. Spectral analysis of the light emitted from the device enables deduction of its natural vibrational modes in analogy with spectroscopy of a molecule's vibrational levels, and its eccentricity perturbation is shown to induce spectral splitting

    Surface optomechanics: Calculating optically excited acoustical whispering gallery modes in microspheres

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    Stimulated Brillouin scattering recently allowed experimental excitation of surface acoustic resonances in micro-devices, enabling vibration at rates in the range of 50 MHz to 12 GHz. The experimental availability of such mechanical whispering gallery modes in photonic-MEMS raises questions on their structure and spectral distribution. Here we calculate the form and frequency of such vibrational surface whispering gallery modes, revealing diverse types of surface vibrations including longitudinal, transverse, and Rayleigh-type deformations. We parametrically investigate these various modes by changing their orders in the azimuthal, radial, and polar directions to reveal different vibrational structures including mechanical resonances that are localized near the interface with the environment where they can sense changes in the surroundings.Comment: 10 pages, 5 figures, 1 table; journal paper - Optics Express, Accepted for pub. as of 20 Jun 201

    Tweezers controlled resonator

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    We experimentally demonstrate trapping a microdroplet with an optical tweezer and then enabling it as a microresonator by bringing it close to a tapered fiber coupler. Our tweezers facilitated the tuning of the coupling from the under-coupled to the critically coupled regime with an optical Q of 12 million and microresonator size at the 85 mirons scale.Comment: 5 pages, 4 figure
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