Video games are part of our culture like TV, movies and books. Video games with other goals than entertainment are called: Serious Games. We believe this kind of software can be used to increase students’ interest in computer science. This paper presents a study around a serious game dedicated to strengthening programming skills. Real-Time Strategy game, which is a popular game genre, seems to ...

RÉSUMÉ. La généralisation à la volée désigne l’utilisation de techniques de généralisation automatique en temps réel. Les données générées sont temporaires et exclusivement destinées à la visualisation et non pas au stockage ou à d’autres fins. Ceci, rend ce processus bien adapté aux contextes hautement interactifs tels que la cartographie en ligne et le SOLAP. BLG tree et GAP tree sont des str...

We propose a new localization method in order to estimate the position of wireless devices in real time, using already existent infrastructure (such as IEEE 802.11 access points). We present a filtering algorithm that computes the most likely path taken by a mobile node, based on signal strength measurements and a known signal strength map. In our approach we do not assume that the node mobilit...

RÉSUMÉ. Dans un modèle conceptuel, les contraintes d'intégrité représentent une partie intégrante dont la définition est nécessaire pour exprimer aux mieux la sémantique du réel perçu. Toutefois, ces contraintes même si elles sont exprimées au niveau conceptuel, elles sont très souvent ignorées lors du passage vers le niveau logique. En pratique, la majorité des AGL de modélisation ne supporten...

— We give an explicit upper bound for the residue at s = 1 of the Dedekind zeta function of a totally real number field K for which ζK(s)/ζ(s) is entire. Notice that this is conjecturally always the case, and that it holds true if K/Q is normal or if K is cubic. Résumé (Bornes supérieures explicites pour les résidus en s = 1 des fonctions zêta de Dedekind de corps de nombres totalement réels) N...

Application of the concept of combining the estimated forecast output of different rainfall-runoff models to yield an overall combined estimated output in the context of real-time river flow forecasting is explored. A Real-Time Model Output Combination Method (RTMOCM) is developed, based on the structure of the Linear Transfer Function Model (LTFM) and utilizing the concept of the Weighted Aver...

The efficient design of computation intensive multidimensional signal processing application requires to deal with three kinds of constraints: those implied by the data dependencies, the non functional requirements (real-time, power consumption) and the availability of resources of the execution platform. We propose here a strategy to use a refactoring tool dedicated to this kind of application...

Le paradigme central en théorie de la commande robuste repose sur la structure de commande à contre-réaction et sur les modèles linéaires à temps invariant (LTI) des systèmes dynamiques (cf. figure 1). La première utilise l’information des sorties mesurées y pour élaborer un signal de commande u. Les modèles LTI quant à eux sont des objets mathématiques bien caractérisés et simples à utiliser. ...

We define a new shading tool called a Bidirectional Appearance Distribution Function (BADF) tailored to the direct control of stylized appearance. A BADF can be thought of as defining the appearance of a sphere from all possible illumination directions. Our BADF formulation generalizes and improves upon previous stylized shading techniques by enabling the direct control of shading profiles in s...

Shadows, particularly soft shadows, play an important role in the visual perception of a scene by providing visual cues about the shape and position of objects. Several recent algorithms produce soft shadows at interactive rates, but they do not scale well with the number of polygons in the scene or only compute the outer penumbra. In this paper, we present a new algorithm for computing interac...