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Cohen Of Brighton Escutcheon
Cohen may refer to: Places *Cohen-kuhi Tau/4, a star 420 light-years away from Earth in the Taurus Constellation *The Cohen Building of '' The Judd School'' in Tonbridge, England People * Cohen (surname), a common Jewish surname Arts, entertainment, and media *Matt Cohen Prize, an award given annually by the Writers' Trust of Canada to a Canadian writer *Shaughnessy Cohen Award, a Canadian literary award Law *Clinger–Cohen Act, a United States federal law that is designed to improve the way the federal government acquires and manages information technology *''Cohen v. California'', a U.S. Supreme Court case dealing with freedom of speech *''Cohen v. Cowles Media Co.'', a U.S. Supreme Court case establishing that freedom of the press does not exempt newspapers from generally applicable laws *'' Cohens v. Virginia'', a U.S. Supreme Court decision most noted for the Marshall Court's assertion of its power to review state supreme court decisions in criminal law matters *''Flast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cohen-kuhi Tau/4
CoKu Tau/4 is a pre- main-sequence binary T Tauri star system in the constellation Taurus. The stars are surrounded by a circumbinary disc with a central cavity of radius 10 astronomical units. Before its binary nature was known, the central cavity in the system's disc was thought to have been cleared out by a planet of at least 10 Jupiter masses, a rare example of a so-called "transitional disc". This model was disproven in 2008 when the star was resolved using adaptive optics as a system of two near-equal-mass stars with a projected separation of 8 AU. The central cavity is thus cleared out by the stars, not by the gravitational influence of a planet. References Ireland & Kraus (2008): The Disk Around CoKu Tauri/4: Circumbinary, Not TransitionalHow Nature Builds a Planet Adam Frank, ''Discover'' 26 (#7, July 2005); accessed online 1-II-2007. On the Planet and the Disk of CoKu TAURI/4 Alice C. Quillen et al., ''Astrophysical Journal'' 612 (September 2004), pp. L137& ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cohen's Kappa
Cohen's kappa coefficient (''κ'', lowercase Greek kappa) is a statistic that is used to measure inter-rater reliability (and also intra-rater reliability) for qualitative (categorical) items. It is generally thought to be a more robust measure than simple percent agreement calculation, as ''κ'' takes into account the possibility of the agreement occurring by chance. There is controversy surrounding Cohen's kappa due to the difficulty in interpreting indices of agreement. Some researchers have suggested that it is conceptually simpler to evaluate disagreement between items. History The first mention of a kappa-like statistic is attributed to Galton in 1892. The seminal paper introducing kappa as a new technique was published by Jacob Cohen in the journal ''Educational and Psychological Measurement'' in 1960. Definition Cohen's kappa measures the agreement between two raters who each classify ''N'' items into ''C'' mutually exclusive categories. The definition of \kappa is :\k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |