Search results for "Diffusion network"
showing 2 items of 2 documents
Noise removal using a nonlinear two-dimensional diffusion network
1998
Un reseau electrique non lineaire bidimensionnel, constitue de N×N cellules identiques, et modelisant l’equation de Nagumo discrete est presente. A l’aide d’une nouvelle description de la fonction non lineaire, on peut predire analytiquement l’evolution temporelle de la partie coherente du signal, ainsi que celle des perturbations de petites amplitudes qui lui sont superposees. Enfin, des applications a l’amelioration du rapport signal sur bruit, ou au traitement d’images sont suggerees.
Lithic Management in the Chassey Culture Neolithic
2009
The integrated technological approach of the lithic industries in Southern France Chassey culture and neighbouring cultures is a way to highlight a complex organisation of space. The development of long distance diffusion networks of lithic products from western Provence creates interdependence between producing-exporting sites and receiving-consuming sites. The analysis of their functioning, from raw material sources until remote consuming sites, is undergone on various scales (from supra-regional to local), through lithic technology and use wear analysis.