Ce mémoire s'emploie à étudier les corps quadratiques réels ainsi qu'un élément particulier de tels corps quadratiques réels : l'unité fondamentale. Pour ce faire, le mémoire commence par présenter le plus clairement possible les connaissances sur différents sujets qui sont…

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The quality of higher education has been a growing concern in the United States and United Kingdom. There have been no notable improvements in the education system until the last few years. Considerable transformation in the higher education arena has…

Sensors are increasingly being used for continuous monitoring purposes, the process of which generates huge volumes of data that need to be mined for interesting events in real-time. The purpose of this research is to develop a method to identify…

This work extends the semantics and implementation of fuzzy prolog presented in [VGM02] in order to include Default Knowledge capability. The new semantic allows non-uniform default assumptions and has Closed World Assumption (CWA) and Open World Assumption (OWA) as particular…

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…

The analysis of high sports performance by means of technological advances has often been used to calculate the routes of sportsmen in the distances covered, or to calculate speed in orienteering. However, there is still little information on data for…

This article presents the confluence of two general ideas: Defeasible Logic Programming (DeLP, an argumentation based formalism for representing knowledge and reasoning) and Abduction in logic. In first place, we introduce a framework that formally states the problem of doing…

Using an audiovisual perception task, two groups of native English listeners
(monolinguals, and L2 learners of Spanish) were asked to identify
which /p,t,k/ tokens had been produced by native English speakers
and which ones by foreigners. The experiment found that…

Scientific knowledge and skills acquired by students during pre-university education has diminished since legislative changes were introduced in Spain during the 1990's. As a result, education in the field of science is suffering. Some initiatives are currently underway in Great…