968 resultados para Serrano Belezar, Miguel de, m. 1809-Correspondencia


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Pie de imp. consta en col

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En 1968, el arquitecto español José Miguel de Prada Poole (Valladolid 1938) inicia sus investigaciones sobre Estructuras Pneu¡ticas de Respuesta Variable, influido por la cibernética y las incipientes técnologías de computación. La ciencia de la cibernética se basa en que tanto los humanos como las ¡quinas forman parte de un sistema de control y respuesta, es decir, un sistema de mensajes. Conocedor de las teorías de Norbert Wiener, padre de la cibernética, Prada Poole asumió el cambio de paradigma que convertía la comunicación en el instrumento esencial para entender la sociedad y la arquitectura.

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This paper presents an experimental and systematic investigation about how geometric parameters on a biplane configuration have an influence on aerodynamic parameters. This experimental investigation has been developed in a two-dimensional approach. Theoretical studies about biplanes configurations have been developed in the past, but there is not enough information about experimental wind tunnel data at low Reynolds number. This two-dimensional study is a first step to further tridimensional investigations about the box wing configuration. The main objective of the study is to find the relationships between the geometrical parameters which present the best aerodynamic behavior: the highest lift, the lowest drag and the lowest slope of the pitching moment. A tridimensional wing-box model will be designed following the pattern of the two dimensional study conclusions. It will respond to the geometrical relationships that have been considered to show the better aerodynamic behavior. This box-wing model will be studied in the aim of comparing the advantages and disadvantages between this biplane configuration and the plane configuration, looking for implementing the box-wing in the UAV?s field. Although the box wing configuration has been used in a small number of existing UAV, prestigious researchers have found it as a field of high aerodynamic and structural potential.

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Grid connected solar plants are a good opportunity for their use for research as a secondary objective. In countries were feed-in tariffs are still active, it is possible to include in the design of the solar plant elements for its use for research. In the case of the solar plant presented here both objectives are covered. The solar plant of this work is formed by PV modules of three different technologies: Multicrystalline, amorphous and CdTe. In one part of the solar plant, the three technologies are working at the same conditions, not only ambient conditions but also similar voltage and current input to the inverters. Both the commercial and the experimental parts of the solar plant have their own independent inverters with their meters but are finally connected to the same meter to inject. In this work we analyse the results for the first year of operation of the experimental solar plant. Productions of three different technologies in exactly the same conditions are compared and presented. According to the results, all the three technologies have conversion efficiencies dropping when the temperature increases. Amorphous module experiences the lesser reduction, whereas the multicrystalline module suffers the most.

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Capítulo del libro Arquitectura española del exilio, de Juan José Martín Frechilla

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Alcance y contenido: Executoria de hidalguía, iniciada en 1565, a favor de Antón Gallego, Alonso Gallego, Blas Mogollón [Blas Gallego Mogollón] y Miguel Gallego, y que resolvía el pleito que tenían estos con el Concejo de la villa de la Puebla de Alcocer (Badajoz), demostrándo su nobleza y limpieza de sangre y por tanto, declarándoles exentos de "pechar ni contribuir en los pechos y derramas reales y concejales ... de que eran libres y esemptos los hombres hijos dalgo"

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En este libro se recoge una selección de las comunicaciones presentadas en el IV Congreso Internacional ‘Deporte, Dopaje y Sociedad’ que se celebró en Madrid del 26 de febrero al 1 de marzo de 2014 y que fue organizado conjuntamente por la Universidad Politécnica de Madrid y la Agencia Española de Protección de la Salud en el Deporte. Los textos están escritos en español, francés e inglés y abordan el estudio del fenómeno del dopaje desde el ámbito especifico de las Ciencias Humanas y Sociales a través de disciplinas como Historia, Derecho, Sociología, Psicología, Econo­a, Ciencias de la Información y otras disciplinas relacionadas.