2,640 research outputs found

    Data requirements in support of the marine weather service program

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    Data support activities for the Marine Weather Service Program are outlined. Forecasts, cover anomolous water levels, including sea and swell, surface and breakers, and storm surge. Advisories are also provided for sea ice on the Great Lake and Cook inlet in winter, and in the Bering, Chukchi, and Beaufort Seas in summer. Attempts were made to deal with ocean currents in the Gulf Stream, areas of upwelling, and thermal structure at least down through the mixed layer

    Exposure of Preadolescent Children to Nonnative Accents and its Effect on Linguistic Trajectory

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    Children and adults are often put presented with accents that are outside their realm of familiarity. The purpose of this study was to examine how exposure of preadolescent children to nonnative accents during their linguistic development increases their linguistic flexibility in adulthood. By examining the processes of speech intake, the stages of linguistic development, and the role of experience versus perception, the research clarifies what elements most significantly alter a listener’s ability to interpret unfamiliar speech and during what periods a person is most developmentally available for a a streamline understanding of nonnative speech. This study challenges the argument that direct exposure is the only way to understand nonnative accents and the argument that all adults have the ability to decipher unfamiliar speech. Through exposure which leads to familiarity and the development of mechanisms to isolate essential and nonessential linguistic information, listeners increase their storage of context and speaker-specific characteristics and ability to navigate nonnative speech.https://scholarscompass.vcu.edu/uresposters/1080/thumbnail.jp

    Portable life support for instrumentation of an offshore platform

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    A compressor was used to supply air through a nylon hose to the offshore platform field engineer working at the bottom of the piling. Air quality in the pile was sampled periodically for carbon dioxide, carbon monoxide, hydrogen sulfide, and combustible gases by an universal tester and an explosion meter

    Meson-meson correlations in baryon-baryon and antibaryon-baryon interactions

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    Recent work of the J\"ulich group about the role of meson-meson correlations in baryon-baryon and antibaryon-baryon interactions is reviewed.Comment: Lecture given at the Erice School 1995, TEX, 10 pages, 15 figure

    Do intercontraction intervals predict when a woman at term should seek evaluation of labor?

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    A reduction in the intercontraction interval is associated with active labor (strength of recommendation [SOR]: B, cohort study). Most primigravidas who have had regular contractions for 2 hours and multigravidas who have had regular contractions for 1 hour haven't transitioned into the active phase of labor (SOR: B, cohort study)

    Strange vector currents and the OZI-rule

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    We investigate the role of correlated πρ\pi\rho exchange in the extraction of matrix elements of the strange vector current in the proton. We show that a realistic isoscalar spectral function including this effect leads to sizeably reduced strange vector form factors based on the dispersion--theoretical analysis of the nucleons' electromagnetic form factors.Comment: 8 pp, plain LaTeX, uses epsf, 3 figure

    What have we learned from antiproton proton scattering?

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    From recent charge exchange measurements in the extreme forward direction, an independent and precise determination of the pion nucleon coupling constant is possible. This determination has reopened the debate on the value of this fundamental coupling constant of nuclear physics. Precise measurements of charge exchange observables at forward angles below 900 MeV/c would also give a better understanding of the long range part of the two-pion exchange potential. For example, the confirmation of the coherence of the tensor forces from the pion exchange and the isovector two-pion exchange would be very valuable. With the present data first attempts at an \NbarN partial wave analysis have been made where, as in nucleon nucleon scattering, the antinucleon nucleon high J partial waves are mainly given by one-pion exchange. Finally a recent \pbarp atomic cascade calculation and the fraction of P-state annihilation in gas targets is commented on.Comment: 10 pages, Latex, to be published in Nucl. Phy

    Combined Description of NN\bf{\overline{N}N} Scattering and Annihilation With A Hadronic Model

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    A model for the nucleon-antinucleon interaction is presented which is based on meson-baryon dynamics. The elastic part is the GG-parity transform of the Bonn NNNN potential. Annihilation into two mesons is described in terms of microscopic baryon-exchange processes including all possible combinations of π,η,ρ,ω,a0,f0,a1,f1,a2,f2,K,K\pi,\eta,\rho,\omega,a_0,f_0,a_1,f_1,a_2,f_2,K,K^*. The remaining annihilation part is taken into account by a phenomenological energy- and state independent optical potential of Gaussian form. The model enables a simultaneous description of nucleon-antinucleon scattering and annihilation phenomena with fair quality.Comment: revised version, REVTEX, 9 pages, 10 figures available from this URL ftp://ikp113.ikp.kfa-juelich.de/pub/kph140/nucl-th.9411014.u
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