1000 resultados para Evaluación de los sistemas de información
Resumo:
Programa de Doctorado en Matemática pura y aplicada
Resumo:
Tribunal: María Esther Torres Padrón y Ascensión Viera Rodríguez de la Universidad de Las Palmas de Gran Canaria, José Antonio Murillo Pulgarín de la Universidad Castilla La Mancha,Ana García Campaña de la Universidad de Granada ; y como presidente del tribunal, Venerando González Díaz de la Universidad de La Laguna
Resumo:
Programa de doctorado: Física Fundamental y Aplicada.
Resumo:
[EN]Octopus vulgaris on-growing in floating cages has shown promising results. Nevertheless, some aspects of the culture system need to be evaluated to warrantee its profitability. In the present work individual and group rearing, in PVC net compartments and floating cages respectively, are compared under two dietary treatments. One diet is composed by bogue, supplied as ?discarded? species from local fish farms, and the other is based on a 40-60% discarded bogue-crab Portunus pelagicus. Besides, the effect of initial size is also evaluated. All octopuses were PIT-tagged and the experiment lasted 2 months. Absolute growth rate (AGR, g./day) and mortality (%) were calculated. Control diet generated higher growth rates and lower mortality which suggests different crab requirements at higher rearing temperatures. High mortality recorded in individual rearing could be related with high initial rearing density and temperatures.
Resumo:
Octopus vulgaris on-growing in floating cages is a promising activity implemented in Spain at industrial level, with productions of 16-32 tons/year from 1998. Nevertheless, some aspects of the culture system need to be evaluated to warrantee its profitability. In the present study two rearing systems and two dietary treatments were evaluated. Individual and group rearing, in PVC net compartments and floating cages respectively, were compared under two dietary treatments. One diet was composed by bogue, supplied as ?discarded? species from local fish farms, and the other was based on a 40-60% discarded bogue-crab Portunus pelagicus. All octopuses were PIT-tagged and the experiment lasted two months. Animals were sampled once throughout the experimental period and absolute growth rate (AGR, g./day) and mortality (%) were calculated. AGR of group rearing was above 30 g./day, however individual rearing showed 100% survival so biomass increment was higher. On the other hand, males grew more than females regardless of dietary treatment.
Resumo:
[ES] Se describen de forma cuantitativa los impactos ambientales originados por las actuaciones del hombre en el sistema playa-duna de El Inglés y Maspalomas en la isla de Gran Canaria. Se asume una metodología que pretende obtener resultados objetivos (con independencia del operador cualificado de campo).
Resumo:
[ES]La interconexión de los sistemas eléctricos de las Islas Canarias, así como la de éstas con el sistema eléctrico continental africano, y por ende con el europeo, supone la mejora de los sistemas eléctricos de las Islas Canarias en múltiples aspectos, de los cuales cabe destacar aquí tres: disminución de los costes de generación, mejora de la calidad del suministro, y mejora en la penetración de la generación mediante energías renovables. En definitiva, satisfacer la demanda con una mayor calidad de suministro y un "mix" energético más barato y sostenible.
Resumo:
Programa de doctorado: Formación del Profesorado