Search results for "computing"
showing 10 items of 25279 documents
Caractérisation des marqueurs sédimentaires du ruissellement sur un massif saharien au Tardiglaciaire et à l'Holocène inférieur (Termit, Niger orient…
2007
13 pages; International audience
Le surréalisme en papillons : détourner, propager, archiver
2021
International audience; Les papillons produits par le surréalisme à la fin de 1924 constituent un corpus intimement lié à l’organisation même du mouvement et de son Bureau de recherches surréalistes. Mais tout en reprenant le papillon au champ politique, le surréalisme le transforme en objet à la fois poétique, onirique et bibliophilique. Le papillon surréaliste obéit ainsi à une triple démarche : il détourne la communication politique ou commerciale pour en transposer les codes dans le champ de l’avant-garde littéraire et artistique ; il propose et propage une définition, une éthique et une généalogie du surréalisme ; il porte témoignage d’une activité collective qui tend aussitôt à le tra…
HDR-ARtiSt: a FPGA-based Smart Camera for High Dynamic Range color video from multiple exposures
2014
International audience; A camera is able to capture only a part of a high dynamic range scene information. The same scene can be fully perceived by the human visual system. This is true especially for real scenes where the difference in light intensity between the dark areas and bright areas is high. The imaging technique which can overcome this problem is called HDR (High Dynamic Range). It produces images from a set of multiple LDR images (Low Dynamic Range), captured with different exposure times. This technique appears as one of the most appropriate and a cheap solution to enhance the dynamic range of captured environments. We developed an FPGA-based smart camera that produces a HDR liv…
Perfect Hashing Structures for Parallel Similarity Searches
2015
International audience; Seed-based heuristics have proved to be efficient for studying similarity between genetic databases with billions of base pairs. This paper focuses on algorithms and data structures for the filtering phase in seed-based heuristics, with an emphasis on efficient parallel GPU/manycores implementa- tion. We propose a 2-stage index structure which is based on neighborhood indexing and perfect hashing techniques. This structure performs a filtering phase over the neighborhood regions around the seeds in constant time and avoid as much as possible random memory accesses and branch divergences. Moreover, it fits particularly well on parallel SIMD processors, because it requ…
UNE APPROCHE PARALLELE D'EVALUATION DES PARAMETRES DE TEXTURE POUR L'ANALYSE D'IMAGES DE GRANDE TAILLE
2011
International audience; The main objective of this paper is to develop a new image processing technique that could better be adapted to the processing of large and complex images, especially SAR images, in relation to the former methods of our works. We propose here a new approach of textural parameters evaluation which is about (Ng+1)n-1 times faster than the co-occurrence matrix approach considered as classical, where n is the order of the textural parameter and Ng being the maximum grey level in the image. This approach is based on a new modeling of textural parameters of a generic order n>1 equivalent to the classical formulation, but which is no longer based on frequency matrix (co-occ…
Finnish Mothers’ and Fathers’ Constructions of and Emotions in Their Daily Lives
2017
This article focuses on parents’ construction of and emotions in their everyday lives. The study brings into focus the meanings in the foreground of everyday life, while also revealing new insights into cultural beliefs and prejudices. Interviews were conducted with five nuclear and four divorced families, and each participant (N = 18) was interviewed twice. The second interview was a photo-narrative interview, for which each participant took photographs pertaining to their daily life. Content and thematic analysis were applied to the data. Three main categories of everyday life emerged from the data: family daily life, couples’ daily life, and one’s own daily life. The importance of and pl…
Efficiency of temporal sensor data compression methods to reduce LoRa-based sensor node energy consumption
2022
Purpose Minimizing the energy consumption in a wireless sensor node is important for lengthening the lifetime of a battery. Radio transmission is the most energy-consuming task in a wireless sensor node, and by compressing the sensor data in the online mode, it is possible to reduce the number of transmission periods. This study aims to demonstrate that temporal compression methods present an effective method for lengthening the lifetime of a battery-powered wireless sensor node. Design/methodology/approach In this study, the energy consumption of LoRa-based sensor node was evaluated and measured. The experiments were conducted with different LoRaWAN data rate parameters, with and without …
Revue Le Discours et la Langue
2014
International audience
David Godbold: un parodiste postmoderne.
2013
International audience
C’est incroyable, cette indécence de la parole du sociologue » (Médecin). Ce que le sociologue fait à ses enquêtés
2014
International audience