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…

2009, Autores: Jorge Blajos, Patrick Lavelle, Dalva M. da Mota, Lucia Pitalluga, Sergio Salles Filho, Jorge Irán Vásquez.

A proposta deste trabalho é utilizar técnicas de mineração de dados (data mining), também conhecida como processo de descoberta de conhecimento em bases de dados (Knowledge Discovery in Databases, KDD), para encontrar padrões em bases de dados relacionadas com a…

Local composition models like UNIQUAC, NRTL and the UNIFAC group contribution method are used the world over in the synthesis and design of separation processes, as well as for a large number of other applications of industrial interest. They can…

There are different approaches used by mathematics teacher educators to help pre-service primary teachers develop the useful skills and knowledge required to teach mathematics. One of these approaches is concerned to learning to notice relevant aspects in mathematics teaching. But…

Problematic aspects of intercultural communication are considered in the context of: an increasingly internationalized market for higher education; the globalization of knowledge; the compatibility of distinct national higher education cultures; and the capacity for successful cross-cultural cooperation. This is exemplified…

Cette thèse porte sur le rapport université/entreprise au Mexique après 1990. Il s’agit d’une étude de cas sur l’Université Nationale Autonome du Mexique (UNAM), la plus grande université mexicaine et la plus importante institution productrice de connaissances scientifiques au pays.

La Universidad de los Andes ha participado en distintas modalidades de generación de ingresos
propios: Parque Tecnológico, Empresas o Proyectos con orientación empresarial, sin embargo,
estas experiencias no han sido lo exitosas que se esperaban. Por otra parte, ante la…

En este artículo se discute el concepto de la teoría
transdisciplinaria, como teoría holística, sinérgica e integral, partiendo
del concepto de la teoría intradisciplinaria, e indagando en aspectos de
esta última, tales como definiciones, orígenes, funciones, características
y evolución, entre…

Cette thèse entend contribuer à la compréhension du processus de conception architecturale par le biais du concept de tectonique, notion dont l’historicité confirme une certaine diversité de significations, mais qui suscite une réflexion fondamentale sur le rapport entre l’esthétique architecturale…