We apply Slow Feature Analysis (SFA) to image sequences generated from natural images using a range of spatial transformations. An analysis of the resulting receptive fields shows that they have a rich spectrum of invariances and share many properties with complex and hypercomplex cells of the primary visual cortex. Furthermore, the dependence of the solutions on the statistics of the transform...

Power-line-communication is to use the mains wiring for data communication. Because mains wiring and plugs are found nearly everywhere in every house, the installation expenses and the costs involved will be reduced, compared to other wire-bound communication solutions. This results in a very attractive alternative for the automation technology, especially for domestic applications. This articl...

This paper evaluates a more integrated approach of regulation when doing international comparisons and represents the first cross-country study in the South American region in which quality and weather variables have been included in the analysis. A total of 82 electricity distribution firms operating in Argentina, Brazil, Chile and Peru have been analysed for the period 1998-2008. Stochastic f...

Syndrome de P -R court et QRS normal avec les crises de tachycardie Paroxystique ou le syndrome de (Lown-Ganong-Levine). Dans une enqete epidemiologique sur les ma­ladies cardiovasculaires chez deux populations rurales de Roudsar et Azarbaidjan oriental nous avons retrouve 6 cas de P -R court avec QRS normal. Dans cet article nous avons brievement passe en revue les vois de conduction auriculov...

Le lancement du GIS CollEx-Persée fin 20171 a marqué à la fois de Bibliothèque Scientifique Numérique (BSN)2 et transformation en profondeur réseau des Cadist3, centres d’acquisition diffusion l’information scientifique technique, mis place 1983. En une seule opération, les initiateurs ont changé le paysage l’IST française apporté innovation radicale considérant collections numériques papier pl...