Changement climatique et culture du blé tendre d’hiver en France aux horizons 2070 et 2100 : étude phénoclimatique et géographique à partir des données issues du modèle ALADIN-Climat

Complexification des données et des techniques en linguistique : contributions du TAL aux solutions et aux problèmes

Changement climatique et toponymie. Étude de la répartition ancienne du hêtre à travers ses traces toponymiques

In this paper we evaluate the feasibility of estimating the previous distribution of a tree species, the beech, from the analysis of toponyms presently in use and referring to this species. Specialists from toponymy, agromomy and geometics have been involved. Toponyms are a precious source of information about past distribution: more than 6100 toponyms referring to beech have been detected. MOT...

Modèle de radiation et modèle gravitaire - Du formalisme à l'usage

Simini, González, Maritan et Barabási recently proposed a “universal model for mobility and migration patterns” : the radiation model. They compare the radiation model to the gravity model and conclude that the latter suffers important theoretical inconsistencies and systematic predictive discrepancies. By confronting both models, they address crucial issues about formalisms and usages of spati...

Et Aveugles En Traitement Du Signal Et Des Images

We consider the problem of subspace estimation in aBayesian setting. Since we are operating in the Grassmann man-ifold, the usual approach which consists of minimizing the meansquare error (MSE) between the true subspace and its estimatemay not be adequate as the MSE is not the natural metric in theGrassmann manifold , i.e., the set of -dimensional subspacesin . As an al...

Contribution à l'étude de quelques parasites du sang du mouton et de la chèvre en Iran et dans les pays voisins