991 resultados para 1ST HYPERPOLARIZABILITY
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Mode of access: Internet.
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At head of title: Fourth international congress on inland navigation ...
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All paintings except two are from the George H. Ainslie Collection.
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James E. Murray, chairman.
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Mode of access: Internet.
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Proceedings of the 1st International Light Metal Technology Conference 2003
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We studied the relationship between the decline in sensitivity that occurs with eccentricity for stimuli of different spatial scale defined by either luminance (LM) or contrast (CM) modulation. We show that the detectability of CM stimuli declines with eccentricity in a spatial frequency-dependent manner, and that the rate of sensitivity decline for CM stimuli is roughly that expected from their 1st order carriers, except, possibly, at finer scales. Using an equivalent noise paradigm, we investigated the possible reasons for why the foveal sensitivity for detecting LM and CM stimuli differs as well as the reason why the detectability of 1st order stimuli declines with eccentricity. We show the former can be modeled by an increase in internal noise whereas the latter involves both an increase in internal noise and a loss of efficiency. To encompass both the threshold and suprathreshold transfer properties of peripheral vision, we propose a model in terms of the contrast gain of the underlying mechanisms.
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Profile on Dr. John A. Rock, founding dean of the Florida International University College of Medicine.
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Presentation on major themes for the four year MD curriculum.