30,667 research outputs found

    Strange-Beauty Meson Production at ppˉp\bar p Colliders

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    The production rates and transverse momentum distributions of the strange-beauty mesons BsB_s and Bs∗B_s^* at ppˉp\bar p colliders are calculated assuming fragmentation is the dominant process. Results are given for the Tevatron in the large transverse momentum region, where fragmentation is expected to be most important.Comment: Minor changes in the discussion section. Also available at http://www.ph.utexas.edu/~cheung/paper.htm

    Exchange Rates and Markov Switching Dynamics

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    This article presents a systematic and extensive empirical study on the presence of Markov switching dynamics in three dollar-based exchange rates. A Monte Carlo approach is adopted to circumvent the statistical inference problem inherent to the test of regime-switching behavior. Two data frequencies, two sample periods, and various specifications are considered. Quarterly data yield inconclusive evidence - the test rejects neither random walk nor Markov switching. Monthly data, on the other hand, offer unambiguous evidence of the presence of Markov switching dynamics. The results suggest that data frequency, in addition to sample size, is crucial for determining the number of regimes.exchange rate dynamics, regime switching, Monte Carlo Test, sampling frequency

    Automatic photointerpretation for land use management in Minnesota

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    There are no author-identified significant results in this report

    Feynman-Jackson integrals

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    We introduce perturbative Feynman integrals in the context of q-calculus generalizing the Gaussian q-integrals introduced by Diaz and Teruel. We provide analytic as well as combinatorial interpretations for the Feynman-Jackson integrals.Comment: Final versio

    Comment on "Peierls Gap in Mesoscopic Ring Threated by a Magnetic Flux"

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    In a recent letter, Yi et al. PRL 78, 3523 (1997), have considered the stability of a Charge Density Wave in a one-dimensional ring, in the presence of an Aharonov-Bohm flux. This comment shows that, in one dimension, the stability of the Charge Density Wave depends on the parity of the number of electrons in the ring. This effect is similar to the parity effect known for the persistent current in one-dimensional rings.Comment: Latex, 1 page, 2 figure

    Optimal combined word-length allocation and architectural synthesis of digital signal processing circuits

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