Dynamiques métropolitaines d’Afrique orientale

Conception de reseaux dynamiques . . .

In this paper we study a combinatorial optimization problem arising from on-board networks in satellites. In these kinds of networks the entering signals (inputs) should be routed to amplifiers (outputs). The connections are made via expensive switches with four available links. The paths connecting inputs to outputs should be link-disjoint. More formally, we call a (p, λ, k)−network an undirec...

Développement et validation d'architectures dynamiques

Dynamiques des popularités dans YouTube

RÉSUMÉ. Cet article est une étude de l’évolution du nombre de vues des contenus dans YouTube. Nous proposons dans un premier temps plusieurs modèles inspirés de l’économie et de la biologie pour caractériser les courbes d’évolution des nombres de vues des vidéos. Dans un deuxième temps, nous proposons une méthode automatique de classification de ces courbes en les associant à l’un des différent...

The Maturely, Immature Orientale Impact Basin

Introduction: The Moon is consistently bombarded by large and small projectiles that weather its surface. This includes micrometeorites, cosmic and solar rays, and solar wind implantation and sputtering in a process known as space weathering. Based on data from the Clementine spacecraft, several studies [2, 4, 5] have shown that the degree of this process imparted upon the lunar surface can be ...

Formation of the Orientale lunar multiring basin.

Multiring basins, large impact craters characterized by multiple concentric topographic rings, dominate the stratigraphy, tectonics, and crustal structure of the Moon. Using a hydrocode, we simulated the formation of the Orientale multiring basin, producing a subsurface structure consistent with high-resolution gravity data from the Gravity Recovery and Interior Laboratory (GRAIL) spacecraft. T...