Sur la composition des lois de probabilité des erreurs de situation d'un point sur un plan

Sur La Description Des Formations De . . .

We are interested in nite-time blow-up phenomena for heat equations of the type: @u @t = u+ jujp 1u (1) where u : (x; t) 2 RN [0; T )! R, 1 < p, (N 2)p < N + 2. We rst construct for (1) a solution u which blows-up in nite time T at only one blow-up point x0 2 RN , and describe completely its blow-up pro le (or asymptotic behavior). This construction is based on a priori estimates' technique whi...

Enrichissement des contenus par la réindexation des usagers : un état de l'art sur la problématique

Information retrieval (IR) is a user approach to obtain relevant information which meets needs with the help of a IR system (IRS). However, the IRS shows certain differences between user relevance and system relevance. These gaps are essentially related to the imperfection of the indexing process (as approach related to the IR), to problems related to the misunderstanding of the natural languag...

L’inclinaison Moyenne Des Orbites Des Comètes Sur La Figure De La Terre Et Sur Les Fonctions

One of the most extraordinary phenomena which the system of the world offers to us is the movement of the planets and of their satellites in the same sense and very nearly in the same plane; if we picture to ourselves in fact all these stars describing from west to east some nearly circular orbits and very little inclined to the ecliptic, while the comets seem to be moved indifferently in every...

Sur la présence des antigènes solubles dans la culture liquide et aérée de Hemophilus pertussis

Sur la validité des schémas de bases de données

Les mises a j o u r (Tun schema de base de donnees peuvent porter sur ses trois Const i tuante , ( l ) les declarations de structures, (2) les regies de coherence (et de deduction) et (3) les transactions. Ces Const i tuante doivent verif ier certaines proprietes, de f in issant les Schemas valides. U n Systeme de gestion de Schemas do i t pouvoir verifier la val id i te des sche"mas ( i n d e ...