Si les historiens de la première modernité ont largement investi le champ Méditerranée dans sillage des spécialistes mondes antiques et médiévaux, du xviiie siècle a été peu parcourue par l’histoire culturelle. Lorsqu’il s’agit Lumières, elle pourrait même apparaître comme une zone aveugle en comparaison d’un espace atlantique qui semble capter toute l’attention historiens. Le bilan n’est cepen...

This paper presents a new approach to the problem of blind separation of independent components in the case of MA convolutive mixtures of MA processes. It consists of an extension of the well-known Fast-ICA algorithm developed by Hyvärinen and Oja for instantaneous mixtures. We introduce a new type of sphering (convolutive sphering) that allows the use of non-gaussianity criteria and associated...

La mort de George Floyd et ses répercussions en France ont mis évidence le décalage entre un récit national figé largement aveugle à la dimension atlantique coloniale l’histoire d’une part, demande sociale histoire permettant se saisir question raciale française d’autre part. Ce est l’objet des politiques mémorielles amorcées avec loi Taubira 2001, dont bilan contrasté témoigne difficultés ense...

In 1994, an eigenvector solution to the problem of blind equalization of possibly mixed-phase linear time-invariant transmission channels was published in this journal. Unfortunately, this solution is ambiguous on a certain condition. In this paper, we introduce a novel iterative method termed EigenVector Algorithm for blind equalization (EVA), which not only overcomes the uniqueness problem, b...

We discuss how recently discovered techniques and tools from compressed sensing can be used in tensor decompositions, with a view towards modeling signals from multiple arrays of multiple sensors. We show that with appropriate bounds on a measure of separation between radiating sources called coherence, one could always guarantee the existence and uniqueness of a best rank-r approximation of th...

The problem of channel estimation in code-division multiple-access systems is considered. Using only the spreading code of the user of interest, a technique is proposed to identify the impulse response of the multipath channel from the received data sequence. While existing blind methods suffer from high computational complexity (due to large SVDs) and sensitivity to accurate knowledge of the n...

Abstract This paper describes a partial pedal phalanx of an extinct species barn owl from Guadeloupe. The morphology and size the bone fragment allow it to be referred as giant Tyto without further specification. In addition noeli specimens described Quaternary deposit on Barbuda, this remain represents second occurrence in Lesser Antilles, is first record specimen was recovered pre-Columbian m...