منابع مشابه
Colour-straight Four-quark Operators and Lifetimes of Beautiful Hadrons
Using the relation between the harmonic oscillator wave function and the light quark scattering form factor, the expectation values of colour-straight fourquark operators are evaluated and found to be directly proportional to the cubic power of the oscillator strength. It is predicted that the ratio τ(Λb)/τ(B) ≈ 0.82 against the experimental 0.79 ± 0.06. PACS numbers: 12.39.Hg, 13.20.He, 14.20....
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In the visual masking effect, metacontrast, the perceived brightness, of a flash of light is reduced by the presentation of a second flash in an adjacent region of the visual field . A metacontrast masking interaction between different colour mechanisms is examined in the present study . The spectral compositions and intensities of the stimuli are chosen so that the first (test) flash preferent...
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Colour assessment of pigmented skin lesions are essential for the diagnosis of malignant melanoma. However, visual interpretation of colour is subjective and prone to error. Computer programs can provide support to clinicians to overcome this subjectivity. So far, methods for colour analysis of this nature have utilised statistical classification models. This paper puts forward an alternative f...
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John Forbes Nash, Jr. was a child prodigy. While other boys his age were playing childhood games in their hometown of Bluefield, West Virginia, John was reading E.T. Bell’s Men of Mathematics. Learning more at home than he did at school, the young lad (who was encouraged by his educated parents) was able to solve some of math’s most difficult problems. Accepting a full-ride fellowship to Prince...
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ژورنال
عنوان ژورنال: Journal of the Franklin Institute
سال: 1828
ISSN: 0016-0032
DOI: 10.1016/s0016-0032(28)90257-4