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Traces et inscriptions de connaissances

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...

rapports entre science et valeurs

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Relation entre le pouvoir toxique et le pouvoir antigene des toxines diphterique et tetanique

Darwin et la socialit\'e : entre anthropomorphisme et gradualisme

We propose, in this article, an analysis of the Darwin’s approach to sociality. Sociality is perfectly integrated into the selective model, and is caused by the same process as struggle for existence. Thus, the selective process does not prohibit demonstrating cooperation, but on the contrary, explains it. We will see that the unification of sociality, in a more adequate representation to mamma...

Descripteurs directionnels d’enlacement et d’entrelacement entre objets

The analysis of spatial relationships between objects in images plays a crucial role in various application domains related to pattern recognition and computer vision. In this article, we adress the issue of describing complex spatial configurations, where objects can be imbricated in each other. We formalize this notion with two new spatial relations called the enlacement and interlacement. We...