51,488 research outputs found

    I Skate Therefore I Am: Athletic Identity Amongst Collegiate Level Hockey Players

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    This study explores athletic identity among men’s, women’s and sled hockey athletes and whether or not there is significant differences between the groups. An exploratory study was done that consisted of a quantitative survey that utilized the Athletic Identity Measurement Scale, better known as the AIMS, in order to look in to the three types of athlete’s identity (Brewer, Van Raalte, & Linder, 1993). A snowball sample was used to garner participants from men’s, women’s and sled hockey teams from a moderately sized New England College, for the survey. There were 7 responses from each team, a total of 21 athletes participating. The aforementioned AIMS, was used to determine if there was significant difference with how the three types of athletes identified. The researchers found that there was significant difference in three areas: 1) athlete has many goals related to hockey 2) others seeing them as an athlete, and 3) the importance of others seeing them as an athlete. There was near significance in the AIMS Sum

    Performance as Exchange: Taxation and Jewish Theatre in Early Modern Italy

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    In early modern Italy, an unusual form of exchange between Jewish and Christian communities materialized in Mantua: Jews in Mantua were required to perform an annual play as a tribute to their Gonzaga rulers. Elsewhere in the Italian peninsula, far more onerous performances were extorted from the Jews during carnival, but in the Mantuan performances, several communities - the ruling Gonzaga family, the Jewish community, and Christian audience members - interacted. I consider these performances a form of taxation because the full cost, which was extensive, was borne by the Jewish community. However, the performances were more than mere payment; they also gave the Jewish community a degree of autonomy and expression and enabled performers to develop their artistic skills, albeit always as the members of the company of the Jews, a group that was set apart from the rest of society in early modern Mantua. These theatrical performances can be seen as a public reification of the Jewish community as a distinctively marked but legitimate component of Mantua's economy and social landscape. This dynamic continued in Mantua even as Jews in other parts of Italy were subjected to extremely harsh conditions during the Counter-Reformation and the Catholic Inquisition. © 2013 American Society for Theatre Research

    Dust particle injector for hypervelocity accelerators Patent

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    Method and apparatus for use in forming highly collimated beam of microparticles with high charge to mass ratio and injecting beam into electrostatic accelerating tub

    Configuration Space for Random Walk Dynamics

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    Applied to statistical physics models, the random cost algorithm enforces a Random Walk (RW) in energy (or possibly other thermodynamic quantities). The dynamics of this procedure is distinct from fixed weight updates. The probability for a configuration to be sampled depends on a number of unusual quantities, which are explained in this paper. This has been overlooked in recent literature, where the method is advertised for the calculation of canonical expectation values. We illustrate these points for the 2d2d Ising model. In addition, we proof a previously conjectured equation which relates microcanonical expectation values to the spectral density.Comment: Various minor changes, appendix added, Fig. 2 droppe

    Metastable π\pi-junction between an s±_\pm-wave and an s-wave superconductor

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    We examine a contact between a superconductor whose order parameter changes sign across the Brillioun zone, and an ordinary, uniform-sign superconductor. Within a Ginzburg-Landau type model, we find that if the the barrier between the two superconductors is not too high, the frustration of the Josephson coupling between different portions of the Fermi surface across the contact can lead to surprising consequences. These include time-reversal symmetry breaking at the interface and unusual energy-phase relations with multiple local minima. We propose this mechanism as a possible explanation for the half-integer flux quantum transitions in composite niobium--iron pnictide superconducting loops, which were discovered in a recent experiment [Chen et al., Nature Phys. \textbf{6},260 (2010)].Comment: 5 pages, 4 figures; Published versio

    Simulated-tempering approach to spin-glass simulations

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    After developing an appropriate iteration procedure for the determination of the parameters, the method of simulated tempering has been successfully applied to the 2D Ising spin glass. The reduction of the slowing down is comparable to that of the multicanonical algorithm. Simulated tempering has, however, the advantages to allow full vectorization of the programs and to provide the canonical ensemble directly.Comment: 12 pages (LaTeX), 4 postscript figures, uufiles encoded, submitted to Physical Review

    Study of +/-J Ising Spin Glasses via Multicanonical Ensemble

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    We performed numerical simulations of 2D and 3D Edwards-Anderson spin glass models by using the recently developed multicanonical ensemble. Our ergodicity times increase with the lattice size approximately as V3V^3. The energy, entropy and other physical quantities are easily calculable at all temperatures from a single simulation. Their finite size scalings and the zero temperature limits are also explored.Comment: no figures included, 5 pages, FSU-SCRI-93-3

    Metastable π Junction between an s±-Wave and an s-Wave Superconductor

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    We examine a contact between a superconductor whose order parameter changes sign across the Brillioun zone, and an ordinary, uniform-sign superconductor. Within a Ginzburg-Landau-type model, we find that if the barrier between the two superconductors is not too high, the frustration of the Josephson coupling between different portions of the Fermi surface across the contact can lead to surprising consequences. These include time-reversal symmetry breaking at the interface and unusual energy-phase relations with multiple local minima. We propose this mechanism as a possible explanation for the half-integer flux quantum transitions in composite niobium-iron pnictide superconducting loops, which were discovered in recent experiments [C.-T. Chen et al., Nature Phys. 6, 260 (2010).]
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