983 resultados para Aristóteles, 384-322 a.C


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En este trabajo procuramos ofrecer, en primer lugar, un análisis del argumento de lo uno sobre lo múltiple presente en el tratado Sobre las Ideas de Aristóteles, con el fin de determinar las diferencias entre la Idea platónica y el universal aristotélico. En segundo lugar, nos preguntamos acerca de la validez de la reconstrucción aristotélica de los argumentos platónicos y sostenemos que hay indicios en los diálogos que nos permiten concluir que Aristóteles no traiciona el pensamiento de Platón. Por último, subrayamos que el examen crítico al que somete los argumentos es relevante, no sólo para establecer la distinción entre la Idea platónica y el universal aristotélico, sino también para establecer los aspectos de su propio pensamiento que permanecen deudores de las doctrinas platónicas

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The mechanical behavior of the plate boundary fault zone is of paramount importance in subduction zones, because it controls megathrust earthquake nucleation and propagation as well as the structural style of the forearc. In the Nankai area along the NanTroSEIZE (Kumano) drilling transect offshore SW Japan, a heterogeneous sedimentary sequence overlying the oceanic crust enters the subduction zone. In order to predict how variations in lithology, and thus mechanical properties, affect the formation and evolution of the plate boundary fault, we conducted laboratory tests measuring the shear strengths of sediments approaching the trench covering each major lithological sedimentary unit. We observe that shear strength increases nonlinearly with depth, such that the (apparent) coefficient of friction decreases. In combination with a critical taper analysis, the results imply that the plate boundary position is located on the main frontal thrust. Further landward, the plate boundary is expected to step down into progressively lower stratigraphic units, assisted by moderately elevated pore pressures. As seismogenic depths are approached, the décollement may further step down to lower volcaniclastic or pelagic strata but this requires specific overpressure conditions. High-taper angle and elevated strengths in the toe region may be local features restricted to the Kumano transect.

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The Global River Discharge (RivDIS) data set contains monthly discharge measurements for 1018 stations located throughout the world. The period of record varies widely from station to station, with a mean of 21.5 years. These data were digitized from published UNESCO archives by Charles Voromarty, Balaze Fekete, and B.A. Tucker of the Complex Systems Research Center (CSRC) at the University of New Hampshire. River discharge is typically measured through the use of a rating curve that relates local water level height to discharge. This rating curve is used to estimate discharge from the observed water level. The rating curves are periodically rechecked and recalibrated through on-site measurement of discharge and river stage.