Un univers en mutation rapide

Réaction diffusion en écoulement stationnaire rapide

This Note is concerned with the speed of propagation of a chemical reaction in a fast, steady and non uniform flow, which may apply to flame propagation in some instances. The structure of the flow is 1) a parallel shear flow with velocity perpendicular to the average front, where the flame speed is close to the maximum flow speed toward the fresh gases 2) a periodic cellular structure where th...

Une procédure de décision pour un problème de satisfiabilité dans un univers ensembliste héréditairement fini

In this paper, we deal with the satisfiability problem for Systems of constraints over hereditarily finite sets This problem is central for integrating sets in programming languages, and particularly for constraint logic programming languages The approach we propose hère is based on reducing Systems of set constraints into Systems ofhnear integer equalities and inequahties (with bounded domain)...

Un Estudio Exploratorio de los Departamentos de Tecnologias de Informacion en un Pais en Desarrollo

El grado de madurez de las Tecnologías de Información (TI) permite detectar, en forma indirecta, su nivel de aceptación y utilización. La administración debe atender este problema, y en su caso, resolver. Este asunto tiene un carácter general que impacta en toda la organización, especialmente a los centros responsables de la administración de los sistemas de información. El presente estudio tra...

Desempeño de un regulador-estabilizador neurodifuso en un sistema multimáquinas

In this work the application of a neurofuzzy control system in a multimachine power system is presented. The neurofuzzy control is obtained by the off-line training of a fuzzy neural network based on

Éditorial: Univers et expression