Environnements Personnels d’Apprentissage : exploration des représentations et usages d’étudiants de l’enseignement supérieur

Fraîcheur et validité de données répliquées dans des environnements transactionnels

We propose a framework for managing the quality of data replicated optimistically on a database cluster. It is based on a model of quality of data. Qualitalively, we make the difference between “freshness” and “validity” of data. Quantitatively, data quality is expressed through divergence measures between the data read and the same data with perfect quality. Users specify a minimum level of qu...

Combinatoire bijective des cartes de genre supérieur

Environnements de visualisation pour l'évaluation des performances des systèmes parallèles : étude, conception et réalisation

Usages et pratiques de la publication électronique des résultats de la recherche. Le cas des sciences de l'ingénieur

The journal seems a vector of the scientific diffusion allowing a greater visibility of work. Currently the electronic publication seems to have found its audience and its assistantship particularly in “hard sciences”. But do these new uses upset the conditions and the stakes of diffusion of the results? The first exploratory work near a population of researchers of a school of engineers should...

Extraction et usages de motifs minimaux en fouille de données, contribution au domaine des hypergraphes

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau...