منابع مشابه
Counting Descent Pairs with Prescribed Colors in the Colored Permutation Groups
We define new statistics, (c, d)-descents, on the colored permutation groups Zr o Sn and compute the distribution of these statistics on the elements in these groups. We use some combinatorial approaches, recurrences, and generating functions manipulations to obtain our results.
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It has long been known that colored images may elicit afterimages in complementary colors. We have already shown (Van Lier, Vergeer, & Anstis, 2009) that one and the same adapting image may result in different afterimage colors, depending on the test contours presented after the colored image. The color of the afterimage depends on two adapting colors, those both inside and outside the test. He...
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The Omega polynomial(x) was recently proposed by Diudea, based on the length of strips in given graph G. The Sadhana polynomial has been defined to evaluate the Sadhana index of a molecular graph. The PI polynomial is another molecular descriptor. In this paper we compute these three polynomials for some infinite classes of nanostructures.
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Watermarking of printed materials has usually focused on process inks of cyan, magenta, yellow and black (CMYK). In packaging, almost three out of four printed materials include spot colors. Spot colors are special premixed inks, which can be produced in a vibrant range of colors, often outside the CMYK color gamut. In embedding a watermark into printed material, a common approach is to modify ...
متن کاملThe Poetry of Colors
Bruce Thacker never took an art class. He never even took a computer class. His degree is in geology, and he fi rst bought a computer in 1990 to track stock investments. Somewhere in the convoluted melange of his linear history, he owned a contemporary art gallery, invested in stocks and real estate, owned a custom photo lab, and was a professional photographer. “Other things that I’ve never ha...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2013
ISSN: 1534-7362
DOI: 10.1167/13.15.29