Rosières – Dolmen de Rémène III

Le dolmen de Rémène III, situé dans la commune de Rosières, a fait l’objet d’une fouille de sauvetage urgent en 1991, motivée par une récente fouille clandestine. Architecture C’est un dolmen de type simple, sans table de couverture. Il était inclus dans un tumulus dont une partie a disparu de nos jours. Il ne reste de ce dolmen que les deux dalles latérales adossées à un muret de pierres. Une dalle incluse dans la construction du mur pourrait être la dalle de chevet déplacée d’environ 2 m. A..

« La voix dans les chansons : approches musicologiques »

Faire un bilan d’étape, et souligner les perspectives d’avenir du large champ de recherche que représente l’étude de la voix dans les musiques populaires, tels étaient les objectifs de ce colloque, organisé par Catherine Rudent (Paris IV, IReMuS) et Céline Chabot-Canet (Lyon 2, passages XX-XXI). La nécessité pour la musicologie de s’associer à d’autres disciplines pour appréhender efficacement l’objet vocal s’est illustrée par la diversité des 20 communications proposées, de leurs approches e..

Early Life Ecology of Tunas in the Gulf of Mexico

Summer ichthyoplankton surveys were conducted in surface waters of the northern Gulf of Mexico from 2007 to 2010 to characterize distribution and abundance of tuna larvae. The assemblage of tuna larvae was comprised of four genera: Thunnus, Auxis, Euthynnus, and Katsuwonus. True tunas (genus Thunnus) were the most abundant, and four species were detected; Atlantic bluefin tuna (T. thynnus), yellowfin tuna (T. albacares), bigeye tuna (T. obesus), and blackfin tuna (T. atlanticus). Intra- and inter-annual variability in distribution and abundance of tuna larvae were observed with higher densities in 2008 and 2009 followed by a decline in abundance in 2010. Principal coordinate analysis (PCoA) and generalized additive models (GAM) based on presence/absence and density were developed to examine the impact of mesoscale features on distribution and abundance on true tuna larvae. Distribution and abundance of true tuna larvae in surface waters were influenced by physicochemical conditions of the water mass, notably sea surface temperature and salinity. Distinct species-specific habitat preferences, were observed and the location of mesoscale oceanographic features influenced larval abundance with higher densities of blackfin tuna, yellowfin tuna, and bigeye tuna associated with convergent zones near the margin of the Loop Current (LC) and other anticyclonic regions (warm core); bluefin tuna was observed in higher densities near cyclonic regions (cold core). Finally, habitat suitability maps were developed based on GAMs and environmental conditions to predict the spatial coverage of suitable habitat of blackfin tuna (2011 and 2015) and yellowfin tuna and bigeye tuna during the Deepwater Horizon oil spill (2010). Habitat suitability maps revealed that the amount of highly suitable habitat of blackfin tuna larvae varied between months (June 6%, July 51%); however, in both months larvae were distributed in similar locations along the continental slope and at the margin of the LC in the northern GoM. Similarly, the extent of highly suitable habitat for yellowfin tuna and bigeye tuna varied between June and July. A larger percentage of highly suitable habitat of bigeye tuna was exposed to surface oil (23-34%) compared to yellowfin tuna (4-26%), indicating that the oil spill might have impacted the two species differently

Première contribution a la connaissance des araignées du mont Ventoux

The spider communities were studied using hand collecting, pitfall traps and beating. 133 species were identified (disregarding certain taxonomically difficult groups), belonging to 24 families, including most of those known from France. The majority of the species are widespread in France and Europe, although thirty are particular to the warmer regions. Some alpine species were found (often at lower altitudes than is normal elsewhere), and also some northern species at the southern limit of their range

From image fusion to algorithms cooperation

This paper deals with a few aspects of radar–optronic image fusion . Low leve l fusion uses radiometry to create synthetic images . A higher level fusion involve s decisions taken by one or several sensors (or algorithms) so as to elaborate a final decision on the ground of evidences at hand. This approach is illustrated by a classification problem with a couple of Spot and Ramses (airborne Sar) images . The last part is dedicated to synergic use of Ers and Spot images coupled with ancillary informations and a model, to automatically detect airports.L'intérêt de l'utilisation de données multi-sources pour l'interprétation et la classification d'images satellitales n'est plus à démontrer. La fusion d'informations complémentaires et/ou redondantes peut s'opérer à différents niveaux. La fusion pixel (bas niveau) se fonde exclusivement sur la radiométrie et conduit à des images composites destinées à synthétiser sur un même support des informations issues de chacun des modes. Les résultats obtenus à partir d'images Spot et Ers sont assez décevants. Une fusion se plaçant à un niveau d'abstraction plus élevé manipule des décisions prises par un ou plusieurs classifieurs pour élaborer une décision finale. Cette démarche est illustrée par une classification à partir d'un couple d'images Spot et Ramses (Sar aéroporté). Enfin, faisant l'objet de la dernière partie, une utilisation coopérative d'informations exogènes floues associées à un modèle générique simple assure la détection automatique d'aéroports

Moderate clinical improvement with maintenance ECT in a 17-year-old boy with intractable catatonic schizophrenia

The use of electro-convulsive therapy (ECT) in adolescents is controversial, and few studies have been conducted to assess its efficacy and safety in this population. We report the case of a 19-year-old boy who received two series of ECT, one at 15 and another at 16, for intractable catatonic schizophrenia. Since the age of 17, he has required treatment combining clozapine and maintenance ECT. The course showed a sustained moderate improvement. The treatment permitted the patient to regain some autonomy with moderate adverse effects. ECT remains an uncommon treatment in adolescents, and the current case supports the view that it should not be banned in young people

Taxonomic Richness and Diversity of Larval Fish Assemblages in the Oceanic Gulf of Mexico: Links to Oceanographic Conditions

Biodiversity enhances the productivity and stability of marine ecosystems and provides important ecosystem services. The aim of this study was to characterize larval fish assemblages in pelagic waters of the northern Gulf of Mexico (NGoM) and identify oceanographic conditions associated with areas of increased taxonomic richness (T ) and Shannon diversity (H’). Summer ichthyoplankton surveys were conducted in the NGoM in 2015 and 2016 using neuston net (surface layer; upper 1 m) and oblique bongo net (mixed layer; 0–100 m) tows. Over 17,000 fish larvae were collected over the two-year study, and 99 families of fish larvae were present. Catch composition in the surface layer was relatively similar to the mixed-layer catch, with carangids (jacks), scombrids (mackerels, tunas), and exocoetids (flyingfishes) being numerically dominant, while deep-pelagic species, including myctophids (lanternfishes), gonostomatids (bristlemouths), and sternoptychids (marine hatchetfishes), were present almost exclusively in the mixed layer samples. Generalized additive models were used to evaluate the effect of oceanographic conditions on ichthyoplankton abundance and biodiversity. Salinity and sea surface height (SSH) were the most influential oceanographic conditions, with higher occurrence, higher T , and higher H’ all present in areas of lower salinity, and lower SSH. This study highlights the ecological importance of cyclonic mesoscale features and areas of upwelling as areas of increased biodiversity for larval fishes, and also indicates that the mixed layer in the NGoM is essential habitat for deep-pelagic fishes during the early life interval. F