996 resultados para Notes "sur le terrain",


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Les Témoins de Jéhovah, un groupe religieux à forte tendance traditionnelle, ont vu le jour il y a près de 150 ans. Il s’agit d’un mouvement plusieurs fois étudié par les chercheur(e)s. Toutefois, peu d’information sur le statut des femmes chez les Témoins de Jéhovah nous est parvenue. Ce mémoire a pour but de faire découvrir quels sont les fonctions, rôles, obligations, droits et devoirs sur le plan de la vie privée et de la vie publique des femmes dans ce groupe. Nous avons tout d’abord, présenté l’histoire des femmes Témoins de Jéhovah au sein du mouvement. Ensuite, nous avons fait ressortir les représentations sociales de deux revues du mouvement, soit La Tour de Garde et La Tour de Garde (édition d’étude). Ces représentations sociales nous permettent de définir le statut des femmes chez les Témoins de Jéhovah. Nous avons fait une enquête de terrain sous forme de questionnaire dans une congrégation québécoise. Les réponses de ce questionnaire servent à déterminer si les femmes Témoins de Jéhovah au Québec se retrouvent dans les représentations sociales véhiculées par la Société de La Tour de Garde (Watchtower Society). Cela nous permet de voir comment elles intègrent (ou non) les publications dans leur vie privée et publique et si leur statut ressemble à celui que l'organisation religieuse privilégie pour ses membres féminins. Les informations disponibles dans chacun des chapitres nous permettent de faire certains constats et de voir l’évolution du statut des femmes chez les Témoins de Jéhovah.

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The Centre de Recherches Océanographiques d'Abidjan has carried out the HYDROBIOCLIMAT program in order to study the seasonal and interannual fluctuations of the physical and biological parameters over the continental shelf of Ivory Coast ; two subsurface moorings with from one to three AANDERAA current meters fixed on the lines, were deployed in front of Abidjan and San Pedro. Temperature and current measurement records are presented at these two locations.

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The results of floristic data collected during two surveys in the eastern region of Ebrié lagoon in 1987 (before the reopening of the inlet) and in 1988 (after the reopening of the inlet) are discussed in this article. Salinity increase (from 4‰ to 30‰) as a result of the reopening in September 1987 of the channel of Comoé river, profoundly modified qualitatively and quantitatively, the plant population. Floating or fixed macrophytes have been completely destroyed. Mangrove forest being the hydrophytic belt of the lagunar rives.

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A wind-driven upwelling occurs on the continental shelf of Ivory Coast during the northern summer months; by studying the average conditions in the wind field, it has been found that in steady state the vertical speed upwards does not exceed 70 cm per day. The vertical flow per km super(2) is estimated in 46 m super(3)/s for a channel 50 m depth and in 92m super(3)/s for a channel 300 m depth. This study does not include the inclination of isopycnes in geostrophic adjustment with the variations of the Guinea current.

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Seasonal variations of abundance and vertical distribution over the shelf are investigated for Ostracoda, Cladocera and Cirripede larvae. The main characteristics of the environment are the periodical enrichments mainly caused by upwellings, secondly by the river floods. Ostracoda abundance variations approximately follow phytoplankton outburst. Breeding occurs all over the year. Their vertical distribution is correlated with a discontinuity layer. Diurnal migration, when it occurs in warm season consists in an upward movement during the night towards surface layers. The Ostracoda inhabit bottom layers during the day and migrate at night in intermediate and surface layers. For the main two species of Cladocera, Penilia avirostris and Evadne tergestina, abundance periods follow upwellings, especially during the main cool season. However, Cladocera can grow in low salinity but rich waters. On average Penilia inhabits more superficial waters in cold than in warm seasons. Cirripede nauplii and cypris are more abundant off rocky coasts. Their maxima are in the upwelling periods.

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Stomach contents from 21 species of demersal fish caught on Grand Bassam (Côte d'Ivoire) fishing grounds at 20 and 35 m depth are analyzed. The results are compared with those of Longhurst (1957, 1960). The great importance of Crustacea in the food of those species appears clearly. A representative scheme of the diet is suggested.

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21 surveys over the whole Ivorian continental shelf lead to a description of the phytoplankton repartition according to the different seasons: great and small cold seasons, discharge seasons, and warm seasons. Yearly means of surface cells concentrations range from 1000 to 30000 cells per liter, corresponding to a daily production of 386 to 1166 mg C/m2, according to regression analysis. These values make Côte d'Ivoire a rather rich region, which is subjected to wide standing crop variations.

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An attempt was made to calculate zooplankton production from weights and settled volumes and from the life cycle of some copepods. Biomass data were recorded during several years from 24 monthly cruises and from a coastal station sampled biweekly. Dry weight data were directly measured or were calculated from the settled volumes using a linear regression. They range, on an average, from 0.965 to 5.56 g m-2 day-1 from the shore line to the edge of the continental shelf. The mean life-span of the cohorts of 12 species of copepods is about 20 days. It is assumed that only 1 spawn occurs per generation-time and that the standing stock is turned-over during the life span of a cohort. The production ranges from 48.2 to 278 mg dry weight m-2 day-1 or 17.9 to 103 mg C m-2 day-1, according to the depth of the studied areas. One third of carnivorous production occurs among the copepods. So, it is assumed that the herbivorous and omnivorous production is about 2/3 of the total zooplanktonic production. This would be a more accurate estimate of secondary production. The standing stock of zooplankton and fishes are in the same order of magnitude; the ratio zooplanktonic production/total fishery is 0.8%.

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Ce guide a pour but de faire une présentation rapide de la Convention sur le travail dans la pêche qui a été adoptée en juin 2007 à Genève lors de la 96ème Conférence internationale du Travail (CIT) de l’Organisation internationale du Travail (OIT). Il ne prétend pas donner une interprétation de ses dispositions, ni remplacer la lecture du texte officiel. Il s’agit essentiellement d’aider ceux qui ne connaissent rien de ce nouveau document, et connaissent mal le fonctionnement de l’OIT et de la CIT, à se faire une idée des sujets traités. On espère que ce guide permettra notamment aux pêcheurs et à leurs organisations de comprendre les avantages potentiels et les répercussions de la nouvelle Convention sur la pêche artisanale et à petite échelle des pays en développement. Disponible aussi en ligne sur www.icsf.net

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Présentation de l'organisation du monastère de Baouît, à travers notamment la documentation écrite.