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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Poncet, Y.; Quensiere, J.;

    Metadata only record The article examines the application of a geographical information system (GIS) project to the sustainable development of a natural resource within the context of a fisheries production system in the Central Delta of the River Niger in Mali. The project, which takes into account the specific characteristics of the natural and social environment, results from the findings of a research programme carried out between 1986-94 to investigate the organization and dynamics of a production sector which is based on the exploitation of a natural renewable resource. The Central Delta of the Niger contributes around 90% annually of total fish production in Mali. Over recent years, however, increasing interest from developers, restrictions on fishing and conflict between producers have caused a crisis of production. Through the development of a system of spatial representation of the interactions between the social and natural systems of the area, the objectives of the GIS are to solve the conflicts associated with resource use, develop an effective system of resource management and ensure the long term sustainability of the resource. (CAB Abstract)

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    Other literature type . 1996
    Data sources: VTechWorks
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ VTechWorksarrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      VTechWorks
      Other literature type . 1996
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: African Capacity Building Foundation;

    Le Rapport sur les Capacités en Afrique (RICA) et les indicateurs qu'il propose offrent les intrants nécessaires pour éclairer les choix en matière d'appui au renforcement des capacités. Pour la plupart des pays, l'environnement institutionnel est très propice, et les processus de mise en œuvre sont en place. Cependant, les résultats de développement ne suivent pas, et encore moins les résultats en matière de renforcement des capacités. Le rapport et ses indicateurs soulignent également les réformes institutionnelles et en matière de règlementation qui sont nécessaires pour mieux soutenir les partenariats public-privé en matière d'investissement et de renforcement des capacités, ainsi que les investissements nécessaires pour renforcer davantage l'administration publique. De même, ils soulignent l'importance de la volonté politique dans l'inclusion sociale et le développement. Chaque rapport présente un thème annuel d'une importance clé pour le programme de développement de l'Afrique. Cette année, l'accent est mis sur les exigences de capacités pour l'intégration régionale, qui font partie du mandat de l'ACBF, et sur les capacités des communautés économiques régionales (CER). Le rapport dégage les points ci-après qui sont nécessaires pour renforcer les CER : intégrer le renforcement des capacités dans l'ensemble des efforts visant à réaliser un développement durable ; assurer des ressources administratives et financières suffisantes ; mettre l'accent sur la rétention et l'utilisation des compétences, et pas seulement sur leur acquisition ; et assurer le suivi-évaluation de tous les efforts de renforcement des capacités. Dans le cadre de l'intégration régionale, la dimension capacités est essentielle de nos jours puisque les pays, les CER, les institutions régionales spécialisées et les organisations régionales de développement, sont en train de développer des cadres stratégiques régionaux et de renforcer leurs capacités en vue de poursuivre l'intégration régionale à travers le continent. Les nombreuses ...

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Institute of Develop...arrow_drop_down
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Institute of Develop...arrow_drop_down
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  • Authors: Williams, Charles Wye, 1779-1866.;

    Translation of "The combustion of coal, and the prevention of smoke, chemically and practically considered." ; Includes bibliographical references. ; Mode of access: Internet.

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  • Authors: Lukoye Atwoli; Gregory E. Erhabor; Aiah A Gbakima; Abraham Haileamlak; +17 Authors

    No hay resumen disponible. Aucun résumé disponible. No abstract available. لا يوجد ملخص متاح.

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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: World Bank;

    Le présent rapport, élaboré sous l’égide de la Banque mondiale, est le fruit d’une étude exhaustive sur le Bénin. Il met en relief la situation géographique et économique du pays et se concentre particulièrement sur l’état de l’environnement et les défis auxquels le Bénin doit faire face. La gestion financière globale et le financement des activités prioritaires y sont décrits, ainsi que les allocations aux programmes destinés à l’amélioration de l’environnement et des conditions de vie de la population. Cette étude a été menée en partenariat avec le Bénin et en étroite collaboration avec le Ministère de l’environnement et la protection de la nature, ainsi qu’avec un Comité de pilotage établi par le Directeur général de l’environnement. Cette approche participative a permis plusieurs consultations avec les représentants des différents services et directions liés à l’environnement et avec divers acteurs. Les discussions ont abouti à un accord sur un plan d’action fondé sur les résultats du rapport. L’objectif de l’analyse environnementale du Bénin est d’aider le gouvernement à intégrer l’environnement dans l’élaboration des politiques en procédant à l’analyse des aspects transversaux et des défis que représente une gestion environnementale forte, et de créer une plateforme pour renforcer les capacités du pays afin de permettre la gestion durable des ressources naturelles et de l’environnement. À cette fin, un certain nombre d’actions ont été recommandées, notamment l’établissement de politiques et institutions performantes basées sur une gouvernance forte et un renforcement de l’efficacité, et la mobilisation du financement pour la protection de l’environnement et la gestion des ressources. This report is the product of a comprehensive study on Benin. It highlights the country s geographical and economic situation and concentrates in particular on environmental conditions and the challenges facing Benin. This report covers the financing of priority environmental activities, as well as allocations to programs designed to improve the environment and living conditions of the population. The environmental analysis of Benin seeks to help the Government integrate the environment into policy formulation by analyzing cross-cutting aspects and the challenges of implementing sound environmental management, and creating a platform for strengthening the country s capacities in order to facilitate sustainable natural resource and environmental management. To this end, a number of measures have been recommended, among them the establishment of effective policies and institutions based on sound governance and improved effectiveness, and the mobilization of financing for environmental protection and natural resource management. The study includes the analysis of a case study on three cities: Porto-Novo, Cotonou, and Parakou, and examines the impact of environmental problems and environmental management challenges on these cities.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Open Knowledge Repos...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Open Knowledge Repository
    Report . 2020
    License: CC BY
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Open Knowledge Repos...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      Open Knowledge Repository
      Report . 2020
      License: CC BY
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Bouclé, Johann;

    Au cours de cette synthèse destinée à mon Habilitation à Diriger des Recherches, je dresse dans un premier temps le bilan de mes contributions menées sur la période 2005-2014 et centrées sur l’étude de systèmes hybrides organiques/inorganiques variés pour l’optique non linéaire et l’optoélectronique. En particulier, j’aborderai les spécificités des matériaux inorganiques nanostructurés, puis celles des matériaux organiques -conjugués, avant d’illustrer les phénomènes physiques originaux découlant de leur association. Les développements effectués depuis ma nomination au sein de l’Institut XLIM (UMR 7252, Université de Limoges/CNRS) en 2007 illustreront plus directement mon implication dans le domaine de la conversion photovoltaïque de l’énergie, avec notamment un travail particulier dédié aux cellules solaires hybrides à l’état solide, ainsi qu’aux composites polymères semi-conducteurs / nano-objets. Fort de cette expérience pluridisciplinaire dans le domaine des Nanotechnologies, de la caractérisation physique et optoélectronique, ainsi que des processus photo-physiques associés, je proposerai finalement des contributions à court terme et à plus long terme dans les domaines de la récupération d’énergie et des télécommunications optiques sans fils.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Hyper Article en Lig...arrow_drop_down
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    Other literature type . 2015
    License: CC BY NC ND
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      Other literature type . 2015
      License: CC BY NC ND
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • Authors: Georges Dossou; Jadix Saïnou; Lucien Agbandji; Précieux Christian Behanzin;

    L’objet de ce travail est d’analyser les déterminants de la demande résidentielle d’énergie électrique au Bénin. L’étude a été réalisée sur 1089 ménages en utilisant les données de l’Enquête sur la Consommation d’Electricité au Bénin (ECEB) conduite en 2014 par l’Institut National de la Statistique et de l’Analyse Economique. Après avoir procédé à une analyse descriptive univariée et bivariée, une modélisation économétrique en données de panel a été mise en œuvre. Le modèle d’analyse de la demande conditionnelle de Dalen et Larsen (2012) utilisé à cet effet a révélé que le sexe du chef de ménage, la taille et le revenu du ménage ainsi que la possession d’appareils électroménagers tels que le ventilateur, le brasseur, le réfrigérateur et la radio influencent la demande résidentielle globale d’énergie électrique des départements contrairement au milieu de résidence (urbain ou rural) et au prix du kilowattheure d’électricité. Repères et Perspectives Economiques, Vol. 4, No 2 (2020)

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  • Authors: Tissandier, Gaston, 1843-1899.;

    Mode of access: Internet.

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Bezuneh, T. (ed.); Emechebe, A. M. (ed.); Sedgo, J. (ed.); Ouedraogo, M. (ed.);

    Metadata only record The paper proposes a theory of technology development for semi-arid regions. It then evaluates the theory by reviewing the characteristics of technologies successfully introduced into the regions. Modeling is then used to identify some constraints to further technology introduction of the type proposed. Some specific policy recommendations to accelerate technology introduction are made.

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    VTechWorks
    Other literature type . 1997
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      Other literature type . 1997
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Jouma'A, Joffrey;

    The Southern Ocean is a fragile ecosystem whose dynamics are influenced by climate change that will structure the spatio-temporal distribution of resources. The objective of this PhD was to investigate the foraging strategies used by the southern elephant seal, under energetic (cost of transport and costs of access to the resource) and temporal (time at the bottom of a dive and aerobic dive limit) constraints. Using a set of animal-borne data loggers allowed us to reconstruct their three-dimensional path underwater, but also to calculate their swimming effort, the number of prey encountered and their energy expenditure. At the dive level, our study shows that elephant seals adapt their path, but also the time spent at the bottom, depending on the number of prey encountered. For high local prey density, they spent more time at the bottom, and concentrated their foraging effort in areas restricted search, characterized by a decrease in speed and an increase in horizontal sinuosity. Beyond 550 m, the cost of access to resources becomes greater than the cost of acquisition ; they must therefore deal with a trade-off between prey accessibility and availability. While feeding, these seals increase their buoyancy, reducing furthermore their energy expenditure. This study also shows a spatio-temporal structure of the energy expenditure that appears to be related to feeding success and therefore to prey resources distribution. L’océan austral est un écosystème fragile dont la dynamique est influencée par des variations climatiques qui vont structurer la distribution spatio-temporelle des ressources. L’objectif de cette thèse était d’étudier les stratégies d’acquisition des ressources en proies mises en place par l’éléphant de mer austral face aux contraintes énergétiques (coûts du transport et coûts d’accès à la ressource) et temporelles (temps passé au fond d’une plongée et limite de plongée aérobie) auxquelles il est soumis. L’utilisation d’un ensemble d’enregistreurs de données déployés sur ces animaux a permis de reconstruire en trois dimensions leur plongée, mais également de calculer leur effort de nage, le nombre de proies rencontrées ainsi que leur dépense énergétique. Notre étude montre qu’à l’échelle d’une plongée, les éléphants de mer adaptent leur trajectoire, mais également le temps qu’ils passent au fond, en fonction du nombre de proies rencontrées. Pour des densités locales de proie importantes, ils passent plus de temps au fond, et concentrent leur recherche en zone restreinte, caractérisée par une diminution de la vitesse et une augmentation de la sinuosité horizontale. Au-delà de 550 m, le coût d’accès aux ressources devient supérieur aux coûts d’acquisition ; ils doivent alors faire face à un compromis entre l’accessibilité et la disponibilité en proies. À mesure qu’ils s’alimentent, ces phoques augmentent leur flottabilité, diminuant de surcroît leur dépense énergétique. Cette étude démontre également une structuration spatio-temporelle de cette dépense énergétique qui semble être liée au succès d’alimentation et donc à la distribution des ressources en proies.

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47 Research products
  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Poncet, Y.; Quensiere, J.;

    Metadata only record The article examines the application of a geographical information system (GIS) project to the sustainable development of a natural resource within the context of a fisheries production system in the Central Delta of the River Niger in Mali. The project, which takes into account the specific characteristics of the natural and social environment, results from the findings of a research programme carried out between 1986-94 to investigate the organization and dynamics of a production sector which is based on the exploitation of a natural renewable resource. The Central Delta of the Niger contributes around 90% annually of total fish production in Mali. Over recent years, however, increasing interest from developers, restrictions on fishing and conflict between producers have caused a crisis of production. Through the development of a system of spatial representation of the interactions between the social and natural systems of the area, the objectives of the GIS are to solve the conflicts associated with resource use, develop an effective system of resource management and ensure the long term sustainability of the resource. (CAB Abstract)

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    Other literature type . 1996
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      VTechWorks
      Other literature type . 1996
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: African Capacity Building Foundation;

    Le Rapport sur les Capacités en Afrique (RICA) et les indicateurs qu'il propose offrent les intrants nécessaires pour éclairer les choix en matière d'appui au renforcement des capacités. Pour la plupart des pays, l'environnement institutionnel est très propice, et les processus de mise en œuvre sont en place. Cependant, les résultats de développement ne suivent pas, et encore moins les résultats en matière de renforcement des capacités. Le rapport et ses indicateurs soulignent également les réformes institutionnelles et en matière de règlementation qui sont nécessaires pour mieux soutenir les partenariats public-privé en matière d'investissement et de renforcement des capacités, ainsi que les investissements nécessaires pour renforcer davantage l'administration publique. De même, ils soulignent l'importance de la volonté politique dans l'inclusion sociale et le développement. Chaque rapport présente un thème annuel d'une importance clé pour le programme de développement de l'Afrique. Cette année, l'accent est mis sur les exigences de capacités pour l'intégration régionale, qui font partie du mandat de l'ACBF, et sur les capacités des communautés économiques régionales (CER). Le rapport dégage les points ci-après qui sont nécessaires pour renforcer les CER : intégrer le renforcement des capacités dans l'ensemble des efforts visant à réaliser un développement durable ; assurer des ressources administratives et financières suffisantes ; mettre l'accent sur la rétention et l'utilisation des compétences, et pas seulement sur leur acquisition ; et assurer le suivi-évaluation de tous les efforts de renforcement des capacités. Dans le cadre de l'intégration régionale, la dimension capacités est essentielle de nos jours puisque les pays, les CER, les institutions régionales spécialisées et les organisations régionales de développement, sont en train de développer des cadres stratégiques régionaux et de renforcer leurs capacités en vue de poursuivre l'intégration régionale à travers le continent. Les nombreuses ...

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  • Authors: Williams, Charles Wye, 1779-1866.;

    Translation of "The combustion of coal, and the prevention of smoke, chemically and practically considered." ; Includes bibliographical references. ; Mode of access: Internet.

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  • Authors: Lukoye Atwoli; Gregory E. Erhabor; Aiah A Gbakima; Abraham Haileamlak; +17 Authors

    No hay resumen disponible. Aucun résumé disponible. No abstract available. لا يوجد ملخص متاح.

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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: World Bank;

    Le présent rapport, élaboré sous l’égide de la Banque mondiale, est le fruit d’une étude exhaustive sur le Bénin. Il met en relief la situation géographique et économique du pays et se concentre particulièrement sur l’état de l’environnement et les défis auxquels le Bénin doit faire face. La gestion financière globale et le financement des activités prioritaires y sont décrits, ainsi que les allocations aux programmes destinés à l’amélioration de l’environnement et des conditions de vie de la population. Cette étude a été menée en partenariat avec le Bénin et en étroite collaboration avec le Ministère de l’environnement et la protection de la nature, ainsi qu’avec un Comité de pilotage établi par le Directeur général de l’environnement. Cette approche participative a permis plusieurs consultations avec les représentants des différents services et directions liés à l’environnement et avec divers acteurs. Les discussions ont abouti à un accord sur un plan d’action fondé sur les résultats du rapport. L’objectif de l’analyse environnementale du Bénin est d’aider le gouvernement à intégrer l’environnement dans l’élaboration des politiques en procédant à l’analyse des aspects transversaux et des défis que représente une gestion environnementale forte, et de créer une plateforme pour renforcer les capacités du pays afin de permettre la gestion durable des ressources naturelles et de l’environnement. À cette fin, un certain nombre d’actions ont été recommandées, notamment l’établissement de politiques et institutions performantes basées sur une gouvernance forte et un renforcement de l’efficacité, et la mobilisation du financement pour la protection de l’environnement et la gestion des ressources. This report is the product of a comprehensive study on Benin. It highlights the country s geographical and economic situation and concentrates in particular on environmental conditions and the challenges facing Benin. This report covers the financing of priority environmental activities, as well as allocations to programs designed to improve the environment and living conditions of the population. The environmental analysis of Benin seeks to help the Government integrate the environment into policy formulation by analyzing cross-cutting aspects and the challenges of implementing sound environmental management, and creating a platform for strengthening the country s capacities in order to facilitate sustainable natural resource and environmental management. To this end, a number of measures have been recommended, among them the establishment of effective policies and institutions based on sound governance and improved effectiveness, and the mobilization of financing for environmental protection and natural resource management. The study includes the analysis of a case study on three cities: Porto-Novo, Cotonou, and Parakou, and examines the impact of environmental problems and environmental management challenges on these cities.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Open Knowledge Repos...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Open Knowledge Repository
    Report . 2020
    License: CC BY
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Open Knowledge Repos...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      Open Knowledge Repository
      Report . 2020
      License: CC BY
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Bouclé, Johann;

    Au cours de cette synthèse destinée à mon Habilitation à Diriger des Recherches, je dresse dans un premier temps le bilan de mes contributions menées sur la période 2005-2014 et centrées sur l’étude de systèmes hybrides organiques/inorganiques variés pour l’optique non linéaire et l’optoélectronique. En particulier, j’aborderai les spécificités des matériaux inorganiques nanostructurés, puis celles des matériaux organiques -conjugués, avant d’illustrer les phénomènes physiques originaux découlant de leur association. Les développements effectués depuis ma nomination au sein de l’Institut XLIM (UMR 7252, Université de Limoges/CNRS) en 2007 illustreront plus directement mon implication dans le domaine de la conversion photovoltaïque de l’énergie, avec notamment un travail particulier dédié aux cellules solaires hybrides à l’état solide, ainsi qu’aux composites polymères semi-conducteurs / nano-objets. Fort de cette expérience pluridisciplinaire dans le domaine des Nanotechnologies, de la caractérisation physique et optoélectronique, ainsi que des processus photo-physiques associés, je proposerai finalement des contributions à court terme et à plus long terme dans les domaines de la récupération d’énergie et des télécommunications optiques sans fils.

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    Hyper Article en Ligne
    Other literature type . 2015
    License: CC BY NC ND
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      Other literature type . 2015
      License: CC BY NC ND
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  • Authors: Georges Dossou; Jadix Saïnou; Lucien Agbandji; Précieux Christian Behanzin;

    L’objet de ce travail est d’analyser les déterminants de la demande résidentielle d’énergie électrique au Bénin. L’étude a été réalisée sur 1089 ménages en utilisant les données de l’Enquête sur la Consommation d’Electricité au Bénin (ECEB) conduite en 2014 par l’Institut National de la Statistique et de l’Analyse Economique. Après avoir procédé à une analyse descriptive univariée et bivariée, une modélisation économétrique en données de panel a été mise en œuvre. Le modèle d’analyse de la demande conditionnelle de Dalen et Larsen (2012) utilisé à cet effet a révélé que le sexe du chef de ménage, la taille et le revenu du ménage ainsi que la possession d’appareils électroménagers tels que le ventilateur, le brasseur, le réfrigérateur et la radio influencent la demande résidentielle globale d’énergie électrique des départements contrairement au milieu de résidence (urbain ou rural) et au prix du kilowattheure d’électricité. Repères et Perspectives Economiques, Vol. 4, No 2 (2020)

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  • Authors: Tissandier, Gaston, 1843-1899.;

    Mode of access: Internet.

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Bezuneh, T. (ed.); Emechebe, A. M. (ed.); Sedgo, J. (ed.); Ouedraogo, M. (ed.);

    Metadata only record The paper proposes a theory of technology development for semi-arid regions. It then evaluates the theory by reviewing the characteristics of technologies successfully introduced into the regions. Modeling is then used to identify some constraints to further technology introduction of the type proposed. Some specific policy recommendations to accelerate technology introduction are made.

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    VTechWorks
    Other literature type . 1997
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      Other literature type . 1997
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    Authors: Jouma'A, Joffrey;

    The Southern Ocean is a fragile ecosystem whose dynamics are influenced by climate change that will structure the spatio-temporal distribution of resources. The objective of this PhD was to investigate the foraging strategies used by the southern elephant seal, under energetic (cost of transport and costs of access to the resource) and temporal (time at the bottom of a dive and aerobic dive limit) constraints. Using a set of animal-borne data loggers allowed us to reconstruct their three-dimensional path underwater, but also to calculate their swimming effort, the number of prey encountered and their energy expenditure. At the dive level, our study shows that elephant seals adapt their path, but also the time spent at the bottom, depending on the number of prey encountered. For high local prey density, they spent more time at the bottom, and concentrated their foraging effort in areas restricted search, characterized by a decrease in speed and an increase in horizontal sinuosity. Beyond 550 m, the cost of access to resources becomes greater than the cost of acquisition ; they must therefore deal with a trade-off between prey accessibility and availability. While feeding, these seals increase their buoyancy, reducing furthermore their energy expenditure. This study also shows a spatio-temporal structure of the energy expenditure that appears to be related to feeding success and therefore to prey resources distribution. L’océan austral est un écosystème fragile dont la dynamique est influencée par des variations climatiques qui vont structurer la distribution spatio-temporelle des ressources. L’objectif de cette thèse était d’étudier les stratégies d’acquisition des ressources en proies mises en place par l’éléphant de mer austral face aux contraintes énergétiques (coûts du transport et coûts d’accès à la ressource) et temporelles (temps passé au fond d’une plongée et limite de plongée aérobie) auxquelles il est soumis. L’utilisation d’un ensemble d’enregistreurs de données déployés sur ces animaux a permis de reconstruire en trois dimensions leur plongée, mais également de calculer leur effort de nage, le nombre de proies rencontrées ainsi que leur dépense énergétique. Notre étude montre qu’à l’échelle d’une plongée, les éléphants de mer adaptent leur trajectoire, mais également le temps qu’ils passent au fond, en fonction du nombre de proies rencontrées. Pour des densités locales de proie importantes, ils passent plus de temps au fond, et concentrent leur recherche en zone restreinte, caractérisée par une diminution de la vitesse et une augmentation de la sinuosité horizontale. Au-delà de 550 m, le coût d’accès aux ressources devient supérieur aux coûts d’acquisition ; ils doivent alors faire face à un compromis entre l’accessibilité et la disponibilité en proies. À mesure qu’ils s’alimentent, ces phoques augmentent leur flottabilité, diminuant de surcroît leur dépense énergétique. Cette étude démontre également une structuration spatio-temporelle de cette dépense énergétique qui semble être liée au succès d’alimentation et donc à la distribution des ressources en proies.

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