DIVERSIDAD GENÉTICA EN ALGUNAS ESPECIES DE AMARANTO (Amaranthus spp.)

Análisis de la diversidad morfosintáctica en las locuciones verbales

Resumen. La lengua permanece en constante cambio, disponiendo de una gran cantidad de palabras, combinación y unión de éstas, que permiten expresar un concepto determinado y que son utilizadas en diversos contextos. La fusión de las palabras permite construir frases; la inmensa mayoŕıa de frases están formadas por un verbo y una o varias variables. El verbo exige y realiza una rigurosa selecció...

Cambios Rpidos en las Directrices en Comunidades de Pescadores de Yangtze y en la Memoria Local de Especies Extintas

Local ecological knowledge can provide a unique source of data for conservation, especially in efforts to investigate the status of rare or possibly extinct species, but it is unlikely to remain constant over time. Loss of perspective about past ecological conditions caused by lack of communication between generations may create “shifting baseline syndrome,” in which younger generations are les...

Comparativo empírico de medidas de diversidad en problemas de optimización evolutiva con restricciones

Premature convergence is one of the central problems in evolutionary algorithms, and its main reason consists in the lack of diversity. In order to monitor diversity, special measures must be employed, which describe the population’s spread over the search space or according to the fitness values. Some diversity measures have been proposed for unconstrained optimization and their capability to ...

Análisis de expresión genética en microarreglos utilizando algoritmos implementados en GPU

Especies en Peligro y Patrones de Desarrollo en los Estados Unidos

Conservation biologists and others hypothesize that humankind’s “ecological footprint” is affected not only by the sheer intensity of human activity but also by its spatial arrangement. We used a multivariate statistical model and state-level data to evaluate correlations between species imperilment and the level and spatial distribution of human settlement and infrastructure development in the...