Search results for "ires"
showing 10 items of 4189 documents
Typologie des enclos dans les forêts du Châtillonnais (Côte d'Or)
2014
Alors que de nombreux parcellaires sous forêts sont révélés par le Lidar et le plus souvent attribués à la période gallo-romaine, les parcellaires du Châtillonnais étudiés à travers les habitats par différents moyens ( relevés GPS, indices Lidar et prospections pédestres) donnent des indices d'une occupation plus ancienne. Ces habitats appréhendés par les structures externes en élévation se répartissent en groupes distincts par la forme de l'enclos qui les entourent, la présence ou non d'une construction en pierres. Pour une partie des enclos de forme quadrangulaire, la spécificité du matériel recueilli oriente vers une fonction cultuelle.
Approche d'un territoire de montagne : occupations humaines et contexte pédo-sédimentaire des versants du col du Petit-Saint-Bernard, de la Préhistoi…
2014
As part of a multi-year programme, survey campaigns have been carried out on both slopes of the Petit-Saint-Bernard pass (2188 m, western Alps), at an altitude of between 750 and 3000 m. The method employed abandons ground-based surveying in favour of multiple manual surveys carried out on selected topographic contexts down to the base of the Holocene fill. The results obtained document the longterm development of the pedo-sedimentary dynamic and the occupation of the different altitude stages. The significance of the archaeological data collected is discussed in relation to the state of knowledge in a comparison area including the neighbouring valleys of the western Alps, to existing settl…
The necropolis of Ensisheim/Reguisheimerfeld (Haut-Rhin) : illustration of the Late Bronze Age funerary practices in Alsace
2007
In 2000, the preventive excavation of the Ensisheim/Reguisheimerfeld site (Haut-Rhin), carried out by the ANTEA SARL company, brought to light 87 funerary structures belonging to a cremation necropolis dating from the beginning of the Late Bronze Age (around 1350-1050 BC). Following study of the material, 3 successive chronological phases and a possible cultural "faciès" centred on the bend in the Rhine at Basel, Switzerland, were distinguished. The archaeo-anthropological study of the burnt bones revealed, among other things, the existence of a large number of multiple graves and of socially immature members of the society, phenomena rarely observed in the region. The analysis of the inter…
Two stelae with lateral decoration of the Museum of Langres: new study
2015
National audience; Parmi la riche collection de stèles funéraires gallo-romaines du Musée Guy Baillet de Langres, il est trois fragments appartenant à deux stèles qui nous ont interpellés. L'intérêt majeur de ces monuments est qu'ils conservent un décor latéral, peu ou pas étudié jusqu'alors. Si la première stèle se rapproche de celle que l'on peut trouver en Séquanie, la seconde propose une décoration latérale beaucoup plus rare.
Humidity-enhanced sub-ppm sensitivity to ammonia of covalently functionalized single-wall carbon nanotube bundle layers
2017
International audience; A low-cost method for carbon nanotubes (CNTs) network production from solutions on flexible polyethylene naphthalate substrates has been adopted to prepare high quality and well characterized SWCNT bundle layers to be used as the active layer in chemiresistor gas sensors. Two types of SWCNTs have been tested: pristine SWCNTs, deposited from a surfactant solution, and covalently functionalized SWCNTs, deposited from a dimethyl-acetamide solution. The humidity effects on the sensitivity of the SWCNTs network to NH3 have been investigated. The results show that relative humidity favors the response to NH3, confirming recent theoretical predictions. The COOH-functionaliz…
Midbiotics : conjugative plasmids for genetic engineering of natural gut flora
2019
ABSTRACTThe possibility to modify gut bacterial flora has become an important goal, and various approaches are used to achieve desirable communities. However, the genetic engineering of existing microbes in the gut, which are already compatible with the rest of the community and host immune system, has not received much attention. Here, we discuss and experimentally evaluate the possibility to use modified and mobilizable CRISPR-Cas9-endocing plasmid as a tool to induce changes in bacterial communities. This plasmid system (briefly midbiotic) is delivered from bacterial vector into target bacteria via conjugation. Compared to, for example, bacteriophage-based applications, the benefits of c…
Subjective photic phenomena with refractive multifocal and monofocal intraocular lenses. results of a multicenter questionnaire.
2001
Abstract Purpose To compare the incidence and severity of photic phenomena after the implantation of the Array® (Allergan) refractive multifocal intraocular lens (MIOL) and a monofocal IOL. Setting Multicenter study at Kiel, Mainz, Karlsruhe, and Bremerhaven, Germany. Methods The study comprised 231 randomly selected patients from 4 study centers. The patients had had uneventful phacoemulsification with implantation of a refractive MIOL (n = 138) or a monofocal IOL (n = 93). By questionnaire, patients were asked whether they experienced light sensations postoperatively (light streaks, halos, flare, flashes, or glare) that had not been noticed preoperatively. Additional questions evaluated w…
Scientifiques de pixels et scientifiques en herbe
2018
À partir du constat répété de la sous-représentation des filles et des jeunes issus des classes populaires en sciences, cet article interroge le rôle des représentations des métiers scientifiques: sur papier comme sur écrans, les scientifiques sont en effet massivement des hommes blancs des classes favorisées. Pour apporter un éclairage sociologique sur cette problématique, nous montrons l’articulation entre les représentations enfantines des sciences et ces mises en images des métiers dans les produits culturels pour la jeunesse (manuels, ouvrages, émissions télévisées, jeux…). Les analyses proposées s'appuient sur une enquête qualitative par observations en entretiens menée auprès d'élève…
Directionlets: Anisotropic Multidirectional representation with separable filtering
2006
In spite of the success of the standard wavelet transform (WT) in image processing in recent years, the efficiency of its representation is limited by the spatial isotropy of its basis functions built in the horizontal and vertical directions. One-dimensional (1-D) discontinuities in images (edges and contours) that are very important elements in visual perception, intersect too many wavelet basis functions and lead to a nonsparse representation. To efficiently capture these anisotropic geometrical structures characterized by many more than the horizontal and vertical directions, a more complex multidirectional (M-DIR) and anisotropic transform is required. We present a new lattice-based pe…
MESURE DE LA PERFORMANCE GLOBALE DES AGENCES BANCAIRES : UNE APPLICATION DE LA MÉTHODE DEA
2005
In a DEA framework, the global performance of bank branches is measured and decomposed in technical efficiency and price efficiency.