Difference in Colour Between Bare Skin and Make-up
نویسندگان
چکیده
منابع مشابه
Bare skin, blood and the evolution of primate colour vision.
We investigate the hypothesis that colour vision in primates was selected for discriminating the spectral modulations on the skin of conspecifics, presumably for the purpose of discriminating emotional states, socio-sexual signals and threat displays. Here we show that, consistent with this hypothesis, there are two dimensions of skin spectral modulations, and trichromats but not dichromats are...
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We study the behaviour of iterations of the difference operator δ on streams over {0, 1}. In particular, we show that a stream σ is eventually periodic if and only if the sequence of differences σ, δ(σ), δ(σ), . . ., the ‘δorbit’ of σ as we call it, is eventually periodic. Moreover, we generalise this result to operations δd that sum modulo 2 the elements of each consecutive block of length d +...
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ژورنال
عنوان ژورنال: Journal of the Japan Society of Colour Material
سال: 1976
ISSN: 0010-180X
DOI: 10.4011/shikizai1937.49.559