Morphologie de réseaux et accessibilité

Description de Hyalomma dromedarii (Koch 1844) Morphologie de la larve et de la nymphe

Optimisation et Planification de Réseaux de Télécommunications

The problem of minimum cost extension of an existing communication network, over a given time period [0,T], is stated and formulated. A two phase solution method is then described, in which: a) an optimal long-range configuration is sought, assuming static routing all over the period [0,T]; b) the optimal dynamic routing problem is solved by relaxing the fixed routing assumption, and taking int...

Analyse numérique et réduction de réseaux

The algorithmic facet of euclidean lattices is a frequent tool in computer science and mathematics. It mainly relies on the LLL reduction, making worthwile efficiency improvements. Schnorr proved that the LLL algorithm can be speeded up if one computes approximations to the underlying Gram-Schmidt orthogonalisations. Without approximations, these computations dominate the cost of the reduction....

Architecture de communication multimédia et multi-réseaux

Recent progress in communication technologies leads to new networks architectures and new developments of distributed multimedia applications. Multimedia data are characterised by high throughputs, continuous flows with temporal constraints and synchronisation requirements to ensure their presentation coherence. Actual communication networks can not provide all of these services together (high ...

Cartographie de réseaux d'alliances et analyse stratégique

Our aim is to explain the links between innovation and interfirm network structure and dynamics. We therefore need to understand first the mechanisms that lead to the formation and evolution of real networks. Network analysis was conducted using Tetralogie software for network mapping and graph-theoretic concepts such as density and centrality. Knowledge at all times of the macroscopic environm...