martes, 15 de diciembre de 2009
The Gini coefficient is a measure of statistical dispersion developed by the Italian statistician Corrado Gini and published in his 1912 paper "Variability and Mutability" (Italian: Variabilità e mutabilità). It is commonly used as a measure of inequality of income or wealth. It has, however, also found application in the study of inequalities in disciplines as diverse as health science, ecology, and chemistry.
Although the Gini coefficient is most popular in economics, it can in theory be applied in any field of science that studies a distribution. For example, in ecology the Gini coefficient has been used as a measure of biodiversity, where the cumulative proportion of species is plotted against cumulative proportion of individuals. In health, it has been used as a measure of the inequality of health related quality of life in a population. In chemistry it has been used to express the selectivity of protein kinase inhibitors against a panel of kinases.
domingo, 13 de diciembre de 2009
martes, 8 de diciembre de 2009
El excesivo uso de photoshop en TODAS las revistas, tanto nacionales como internacionales, es ridículo. Hoy en día este fenómeno no se aplica solamente a las mujeres, aunque sin duda ellas son las mayores perjudicadas. Esta propagación de una imagen no solo irreal sino anti-natural. A continuación, una muestra de los excesos cotidianos de esta herramienta mal utilizada.