Abstract. Time-driven sensor networks are devoted to the continuous reporting of data to the user. Typically, their topology is that of a data-gathering tree rooted at the sink, whose vertexes correspond to nodes located at sampling locations that have been selected according to user or application requirements. Thus, generally these locations are not close to each other and the resulting node deployment is rather sparse. In a previous paper, we developed a heuristic algorithm based on simulated annealing capable of finding an optimal or suboptimal data-gathering tree in terms of lifetime expectancy. However, despite the enhanced lifetime, the overall link distance is not optimized, fact that increases the need for additional resources (relay nodes). Therefore, in this paper we propose the Link Distance Reduction algorithm, with the goal of reducing link distances as long as network lifetime is preserved. The benefits of this new algorithm are evaluated in detail.
Este libro presenta un estudio sobre el concepto del interés superior del niño, tanto en el derecho español como en el derecho comparado, en que del análisis de las recomendaciones internacionales y del contenido del concepto se aprecia su dimensión constitucional.En el ámbito del derecho español se analiza la legislación que hace referencia al interés superior del niño, sí como la concreción del mismo por parte de los distintos órganos jurisdiccionales, haciendo hincapié en las resoluciones del Tribunal Constitucional y el Tribunal Supremo.El resultado muestra que los niños tutelados por el Estado sufren discriminación por parte de los poderes públicos a la hora de la determinación y delimitación de su interés superior
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