We use a sample of 69726 galaxies from the SDSS to study the variation of the bimodal color-magnitude (CM) distribution with environment. Dividing the galaxy population by environment (Σ5) and luminosity (−23 < Mr < −17), the u− r color functions are modeled using double-Gaussian functions. This enables a deconvolution of the CM distributions into two populations: red and blue sequences. The ch...

BACKGROUND Respiratory infections with sputum production are a major reason for physician visits, diagnostic testing, and antibiotic prescription in the United States. We sought to determine whether the simple characteristic of sputum color provides information that impacts resource utilization such as laboratory testing and prescription of antibiotics. METHODS Out-patient sputum samples subm...

In this article, we examine the pervasive endorsement of racial color blindness—the belief that racial group membership should not be taken into account, or even noticed—as a strategy for managing diversity and intergroup relations. Despite research demonstrating the automatic perception of race (and thus the seeming improbability of actual color blindness), the color-blind approach to race has...

—At high nuclear density and small temperature due to the asymptotic freedom property of QuantumChromoDynamics and to the existence of an attractive channel in the color interaction, diquark condensates might be formed. Since these condensates break the color gauge symmetry, this phenomenon has the name of color superconductivity. In the last few years this has become a very active field of res...

Specifying the factors that contribute to the universality of color categorization across individuals and cultures is a longstanding and still controversial issue in psychology, linguistics, and anthropology. This article approaches this issue through the simulated evolution of color lexicons. It is shown that the combination of a minimal perceptual psychology of discrimination, simple pragmati...