En este artículo se exponen diversos puntos de vista acerca del devenir de las Ciencias Sociales, a partir del estudio de las revoluciones sucedidas en América Latina desde 1989. Se muestran algunos mitos y tabúes sobre los linderos de las…

Using the underlying idea of the current-mode control, a new dynamical, sliding-mode control for the boost dc-dc converter is proposed. Such controller is easy to design, robust under load and input voltage variations, exhibits fast response, does not depend on…

The Listener is an automated system that unintrusively performs knowledge acquisition from informal input. The Listener develops a coherent internal representation of a description from an initial set of disorganized, imprecise, incomplete, ambiguous, and possibly inconsistent statements. The Listener can…

The ambiguity, robustness and performance of systems becomes increasingly evident as the complexity and size increase in industrial processes. Under these circumstances, conventional control techniques such as PID control, nonlinear feedback control, LQG control and H∞ control have several disadvantages…

This document describes a general structure for the implementation of virtual tools for remote calculation through Internet. Two virtual tools for mathematical analysis
(Analys) and simulation of dynamic systems (SimWeb), supported by the Matlab c, are described. These virtual tools,…

Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal

The actual knowledge about the freshwater algae of Mexico is very uneven from various points of view, despite its recognized potential as indicators of environmental conditions and to be the basal part of trophic chains in aquatic environments. The largest…

This article considers aspects of the assimilation of academic research to town planning guidelines and policies, in particular research conducted in terms, and with methodologies, remote from practical town planning processes. It grew out of an interdisciplinary project examining the…

En el presente trabajo se tratan los cuatro temas
siguientes:
1. El ser humano como ser histórico en devenir
permanente, desde el nacimiento hasta el fin de la
vida.
2. La Historia en la Enfermería y el papel de la

El presente trabajo es la creación de un centro cultural
educativo enológico que sea capaz de brindar excelentes conocimientos en el arte de la producción y consumo del vino. En el cual podrá catar los mejores vinos y también deleitarse…