Savoirs incertains. Étudier « complots » et « vérités » à l’ère numérique

Enjeux et propositions sur les architectures RF pour l'homme connecté à la société numérique

This article presents an overview of the challenges of increasing development of wireless links to enable a more consistent and transparent interconnection between people and the digital world. These issues are in the domain of high performance architectures for conventional applications of wireless Internet, but also in the field of sensor networks and connected objects. Beyond the constraints...

Représentations parcimonieuses et applications en communication numérique

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau...

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....

et fort courant avec commande numérique

Simulation moléculaire et effets d'environnement - Une perspective mathématique et numérique