El ·-carragenano es un polisacárido iónico extraído de algas marinas rojas constituido por unidades repetitivas copoliméricas de ®-(1-3) D-galactosa 4-sulfato y ¯-(1-4) 3,6-anhydro-D-galactosa. El conocimiento de las bases moleculares que determinan la conformación tridimensional de este polisacárido, es fundamental tanto…

La biodiversidad es un atractivo para millones de turistas que viajan alrededor del mundo. Sin embargo la presión ejercida sobre la misma puede provocar la desaparición de especies o la interferencia en los procesos ecológicos que la sostienen.
En la…

We faced with a society identified as a knowledge society, characterized by the rapid development of scientific and technological knowledge, the trends to new ways of working, studying, creating and sharing knowledge, is seen in organizations, and particularly in the…

One of the key aspects in the design of an architecture for autonomous agents is the way in which beleifs are revised in the face of new information. An intelligent agent must be prepared to handle new information (be it…

L’objet de la présente étude est le développement, l’application et la diffusion de la technologie associée à divers types d’alliages de cuivre, en particulier l’alliage du plomb-bronze, en Grèce ancienne, dans ses colonies, ainsi qu’en Étrurie. Le plomb-bronze est un…

This thesis looks for to facilitate the communication of the children with deficient of the speech by means of an electronic team where the SPC (Pictorial Symbols of Communication) to more than being visualized, they are listened, reproducing an audio…

Artificial Intelligence has long dealt with the issue of finding a suitable formalization for reasoning with incomplete and potentially inconsistent information. Defeasible argumentation [SL92,CML00,PraVre99] has proven to be a successful approach in many respects, since it naturally resembles many aspects…

This paper presents the automatic extension to other languages of TERSEO, a knowledge-based system for the recognition and normalization of temporal expressions originally developed for Spanish. TERSEO was first extended to English through the automatic translation of the temporal expressions.…

In today’s world, in both the public or private organizations, there exists the problem that the organizations have to create value, are changing, but the tools to measure them are not. On the other hand, in the current economy, the…

El ensayo traza una concepción, 1º del espacio europeo como un espacio de derechos y deberes, 2º del espacio físico y virtual como recipiente accesible y poroso y 3º del espacio inteligente como superación de las tres brechas digitales, del…