Alors que certains mécanismes pourtant jugés cruciaux pour la transformation de la pluie en débit restent peu ou mal compris, le concept de connectivité hydrologique a récemment été proposé pour expliquer pourquoi certains processus sont déclenchés de manière épisodique en…

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…

by C. Annique Un., Thesis (Ph.D.)--Massachusetts Institute of Technology, Sloan School of Management, February 2001., "February 2000.", Includes bibliographical references (leaves 297-311).

This thesis explores a novel approach to visual speech modeling. Visual speech, or a sequence of images of the speaker's face, is traditionally viewed as a single stream of contiguous units, each corresponding to a phonetic segment. These units are…

by Antoine D. Guivarch., Thesis (S.M.)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2003., Includes bibliographical references (p. 149-152).

Este trabalho tem por objetivo apresentar uma visão do papel que as novas tecnologias da informação e telecomunicações tem exercido sobre a sociedade atual. Este estudo demonstra a importância da democratização da informação e conhecimento na atualidade social como forma…

En los momentos actuales, la enseñanza de la geografía y la historia, adolece de estrategias eficientes para la formación pedagógica, geográfica e histórica de los docentes en todos los niveles, lo cual genera una gran diversidad de problemas, no solo…

This paper describes the implantation of a KA tool kit for use with sublanguage-specific corpora. The key idea of KA as an evolutionary process is discussed in detail. Special attention is paid to the system's attempt to avoid the pitfalls…

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Effective document retrieval using domain knowledge and semantics is one of the major challenges in Information Retrieval. Over the last years, there has been a growing interest in ontologies as an artifact for human knowledge representation and a critical component…