Recherches en didactique des disciplines

L'analyse Statistique Implicative: Une Des Méthodes D'analyse Des Données En Didactique

Through the analysis of research experiences in Didactics of Mathematics data have been compared both with the implicative analysis of Gras and with the factorial analysis of correspondences. The results of this comparison highlighted that implicative analysis, when supplementary variables are introduced, proves to be more incisive in the reading of the contingency. Factorial analysis, instead,...

Recherches en vision par ordinateur

We present a general algorithm for plane-based calibration that can deal with arbitrary numbers of views and calibration planes. The algorithm can simultaneously calibrate different views from a camera with variable intrinsic parameters and it is easy to incorporate known values of intrinsic parameters. For some minimal cases, we describe all singularities, naming the parameters that can not be...

Mémoire présenté en vue de l’obtention de l’Habilitation à Diriger des Recherches

The kinematic and dynamic scaling of dilute multiphase mixtures in magmatic systems is the only guarantee for the geological verisimilitude of laboratory experiments. We present scaling relations that can provide a more complete framework to scale dilute magmatic systems because they explicitly take into account the complexity caused by the feedback between particles (crystal, bubble, or pyrocl...

Document D'habilitation a Diriger Des Recherches

Habilitationà Diriger Des Recherches Discipline Informatique

Database watermarking techniques allow for hiding in-formation in a database, like a copyright mark. Whilewatermarking methods are numerous in the multi-media setting, databases present various specificities.This work addresses some of them: how to watermarka numerical database while preserving the result of in-teresting aggregate queries, how to watermark a struc-tu...