Les champs de l'argumentation

Descente pour les n-champs

We develop the theory of n-stacks (or more generally Segal n-stacks which are∞-stacks such that the morphisms are invertible above degree n). This is done by systematically using the theory of closed model categories (cmc). Our main results are: a definition of n-stacks in terms of limits, which should be perfectly general for stacks of any type of objects; several other characterizations of n-...

Champs de Pickard tridimensionnels

L’objectif de cette note est d’étendre aux réseaux cartésiens tridimensionnels (3D) une partie des résultats établis dans [1] pour les champs de Markov stationnaires sur un réseau bidimensionnel (2D). Plus précisément, il s’agit de caractériser les champs de Markov stationnaires 3D d’ordre trois (MRF3 dans la terminologie de [1]) à partir de leur probabilité marginale sur le cube {1, 2} (Sectio...

Stratégie d'exploration multi-robot fondée sur les champs de potentiels artificiels

The context of this work is multi-robot exploration and mapping of unknown environments. Frontiers (boundaries between empty and unexplored areas) are points to go to in order to increase explored area. In this paper, we propose a frontier allocation method for the exploration and mapping of indoor environments using multiple robots. A wavefront propagation algorithm is used to build a local mi...

Les rongeurs de la region de Tehran

Analyse structurelle des champs de capacité d'action dans les organisations sociales Outils analytiques pour la caractérisation de la coopération

In this article, we present a set of analytical tools aimed at clarifying some simulation results of social actors behaviors in social organizations. These tools are used within a meta-model of social organizations structure, which is the result of a formalization of the Sociology of Organized Action theory. Following this formalization, the structure of a social organization is depicted by som...