9 resultados para Cuevas del Guincho

em Acceda, el repositorio institucional de la Universidad de Las Palmas de Gran Canaria. España


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[ES] Guía geológica por la costa N de Gran Canaria. Se seleccionan afloramientos en los que se observa la interacción entre la actividad volcánica y el mar: desde los sedimentos de la Formacion Detritica de Las Palmas en la parada de Las Cuevas del Guincho, hasta depósitos de tsunami en el Valle de Agaete, pasando por las lavas de la erupción del volcán de la Mña. de Arucas y los depósitos volcanoclásticos del Roque Nublo.

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[EN]This article presents the analysis of planar mi- crostrip structures using the electric-field integral equation. The structures are divided into irregular rectangular subdomains. Besides its describes the delta-gap voltage excitation mode to resolve the equations systems with the method of the moments.

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[EN]The increasing use of microstrip technology require more accurate analysis methods like full wave method of moments. However, this involves a great computational effort. To reduce the computation time, an alternative parallel method to analyze irregular microstrip structures is presented in this paper. This method calculates the unknown surface current on the planar structure trough a irregular rectangular division using basis and weighted functions. The parallel algorithm performs the calculus of a [Z] matrix and then solves the system using current densities as the unknowns. This parallel program was implemented in the IBM-SP2 using MPI library.

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[EN]This article presents the results obtained in the analysis of irregular microstrip structures using a full wave method of moments scheme. The irregular microstrip structures are divided into rectangular subdomains. The EFIE is discretized an solved over the subdomains using a Galerkin type scheme. Base and weight functions are piece wise sinusoidals (PWS) or triangular. Delta gap voltage generators are used as sources]. Green functions are computed using a freely available library developed by our research group. All the calculations are carried out in the so called ”spatial domain” so there is no need of using regular grids during the discretization process.

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[EN]In this paper we will present a comparison between numerical and asymptotic evaluation of Sommerfeld kind integrals when working with real microstrip problems. We have focused our atention in the time required for both methods. Asymptotic methods are less time consuming than numerical ones, but when you have to compare the time involved in the computation of the Green's function with the time required to fill the MoM matrix, the former is very little in front of the latter.

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[ES] El presente trabajo tiene por objetivo el análisis de las listas de vocabulario bilingües español-francés creadas en torno al tema de la indumentaria e incluidas en los diferentes repertorios léxicos organizados por temas que han sido ampliamente empleados como herramienta básica para la enseñanza del vocabulario esencial de una lengua extranjera. La investigación combina, por tanto, tres líneas principales: lexicográfica, dada la naturaleza del corpus, léxico-semántica, puesto que se traza la evolución de las voces registradas en esos listados y didáctica, pues contribuye a un mejor conocimiento de la historia de la enseñanza del vocabulario.