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Vécue comme l’une des plus grandes crises qu’a connue notre génération, la propagation du virus du SIDA est une urgence mondiale sans précédent, notamment en Afrique sub-saharienne où vivent la grande majorité des individus séropositifs. Dans un contexte où aucun…

The following article is an analysis about biographical childhood texts incorporation in Chile. From a cultural view and trying to gather the scarce critical tradition around this kind of writing in Latin America, it proposes an interpretation regarding the late…

The anthropogenic dark earths (ADE, Terra Preta de Índio or terra preta arqueológica, as are often referred to in Portuguese) feature unique properties that are interesting not only from a pedological point of view but have important agronomic and economic…

El presente artículo busca mostrar el proceso de transformación de la disciplina histórica a lo largo del siglo XX. Este proceso afectó en dos aspectos al saber histórico: introdujo una pérdida de centralidad teórica que anteriormente defi nía su naturaleza…

In this paper an adaptive fuzzy decentralized
control algorithm for trajectory tracking of robot manipulators is developed. The proposed decentralized control algorithm allows the overall closed-loop system to be stabilized while making the tracking error to be uniformly ultimately bounded…

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…

Conocer los contextos en los que se desenvuelve una determinada sociedad es fundamental para comprender las pautas que rigen el sector publicitario dentro de unas coordenadas espacio-temporales, pero también resulta interesante establecer el proceso inverso. Es decir, partir de la…

2007

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…