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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: Huyghe, Richard;

    Cet article présente un état de la réflexion sur la sémantique des noms d’action (Nact) en français. Il s’agit dans un premier temps de déterminer les critères d’identification qui s’appliquent à l’ensemble des Nact, au-delà des prototypes déverbaux, agentifs et prédicatifs. L’aspect dynamique apparaît comme l’élément de définition fondamental de la catégorie. Il implique la double construction avec des expressions temporelles (de localisation ou de durée) et des verbes supports d’action ou d’événement (effectuer, avoir lieu, etc.). L’organisation interne de la classe des Nact est ensuite étudiée, et différents principes d’hétérogénéité sémantique sont détaillés. Il est établi que l’aspect nominal n’est pas calqué sur le modèle verbal, et que certaines propriétés descriptives, touchant à l’individuation des actions et à leur forme de réalisation, relèvent spécifiquement du domaine nominal. Sont enfin examinées les propriétés polysémiques des Nact, d’après leur capacité à dénoter d’autres participants de l’action (agents, instruments, résultats, etc.) et à associer en contexte les interprétations multiples. This paper provides a state-of-the-art overview of the semantics of action nouns (ANs) in French. First, the definition of ANs is investigated, as it should apply to all ANs, not only to prototypical deverbal, agentive and predicative nouns. Dynamicity appears to be the main definitional criterion, which implies that ANs occur with both temporal expressions (of location or duration) and actional or eventive light verbs (effectuer ‘make’, avoir lieu ‘take place’, etc.). Second, the heterogeneity of the AN category is studied, and some semantic differences between ANs are highlighted. It is claimed that nominal aspect does not tally with verbal aspect: there are semantic features related to the individuation of events and the way they occur that only exist in the nominal domain. Third, the polysemy of ANs is scrutinized regarding their ability to denote other participants in the event (agents, instruments, results, etc.), and their ability to combine multiple interpretations in context.

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    Other literature type . 2014
    HAL-Inserm
    Article . 2014
    Data sources: HAL-Inserm
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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: MALINGUMU SYOSYO, Crispin;

    Le présent article a pour objectif d'identifier la nature réelle du marché des télécommunications mobiles en République Démocratique du Congo. L'étude indique que le taux de pénétration du mobile est de 44,6% à fin 2014, supérieur à la moyenne africaine de 37%. Entre 2002 et 2007, le marché de la téléphonie mobile congolais est passé d'une structure oligopolistique à une concurrence monopolistique. Les nouvelles firmes accèdent sur le marché par l'acquisition des infrastructures des firmes suiveuses et, exceptionnellement, par l'investissement direct étranger. Dans la conquête des parts des marches, deux groupes d'acteurs interagissent sur le marché : les leaders qui commandent le jeu du marché et les suiveurs qui calquent leur comportement sur celui de leaders. L'étude révèle qu'en matière de tarification, les firmes optent pour deux modes : en prépayé et en mode post-paiement auquel est associé le principe de modulation horaire. L'étude indique, en outre que, la vive compétition entre les opérateurs passe par des stratégies marketing favorable à la qualité de service que par celle de réduction du prix des communications. Elle suggère aux pouvoirs publics de mettre en place un cadre réglementaire obligeant aux firmes d'assurer l'accès à leurs réseaux et définissant les normes de qualité en matière d'interconnexion et de service aux consommateurs. This article aims to identify the real nature of the mobile telecommunications market in the Democratic Republic of Congo. The study indicates that the mobile penetration rate is 44.6% at the end of 2014, higher than the African average of 37%. Between 2002 and 2007, the Congolese mobile market evolved from an oligopolistic structure to monopolistic competition. The new firms enter to the market through the acquisition of infrastructure from follower firms and exceptionally by foreign direct investment. In the conquest of the market shares, two groups of actors interact in the market: the leaders who control the market forces and followers who mimic their behavior on that of leaders. The study reveals that in terms of pricing, firms choose two modes: prepaid and post-payment method which is associated with the principle of hourly modulation. The study also indicates that the intense competition between operators is through marketing strategies favorable to the quality of service rather than by the reduction in the price of communications. It suggests to the government to set up a regulatory framework requiring firms to provide access to their networks and defining quality standards for interconnection and service to consumers.

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    Authors: Paviot, Y.;

    Les technologies actuelles permettent l'intégration de systèmes de plus en plus complexes sur une seule puce. L'augmentation de la complexité induit un accroissement du temps de conception alors que paradoxalement, le concurrence économique impose des temps de mise sur le marché de plus en plus courts. Pour tenter de limiter ce décalage et d'accroître la productivité, l'industrie fait de plus en plus appel à la réutilisation de composants logiciels et matériels pour concevoir leurs systèmes.L'un des problèmes de ce type de conception est celui de la réalisation de la communication entre composants. Cette thèse traite de la communication entre processeurs réalisée par des interfaces mixtes logicielles/matérielles. Leur difficulté de conception et l'impact du choix de partitionnement entre parties logicielles et matérielles nécessitent le développement de méthodes de génération automatique d'interfaces logicielles/matérielles pour l'exploration du partitionnement des services de communication.La contribution de cette thèse consiste en une formalisation des problèmes liés à l'implémentation mixte logicielle/matérielle des services de communication et une proposition de flot pour la génération automatique d'interfaces. Des expériences de réalisations de primitives MPI ont permis d'appréhender le problème et de proposer un flot de génération automatique. Current technologies enable the integration of more and more complex systems on a single chip. The increase in complexity leads to an increase of design time whereas economical competition demands to ever shorter time to market. In order to try to fill this gap and to increase productivity, reuse of HW and SW components to design systems is used more and more by industrial firms.One problem of these design methodologies is about communication between components. The topic of this thesis is hardware/software interface implementation for communication between processors. Interface design difficulties and impact of hardware/software partitioning require automatic interfaces generation in order to enable exploration of partitioning solutions.The contributions of this thesis are formalization of problems with regard to communication services implementation by hardware/software interface, and a suggestion of an automatic interfaces generation flow. Two experiences with MPI implementations led to understanding of the partitioning problematics and to an automatic generation flow.

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    Authors: Gadgil, A.J.; Lobscheid, C.; Abadie, Marc, O.; Finlayson, E.U.;

    n.a.

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    Hal-Diderot
    Article . 2003
    Data sources: Hal-Diderot
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    Other literature type . 2003
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    Authors: Kerbiriou, Xavier;

    Les applications potentielles du carbure de silicium (SiC) en microélectronique ont motivé de nombreuses études sur les défauts ponctuels, qui jouent un rôle important dans la compensation électrique. Ce matériau possède en outre de nombreux atouts pour participer au confinement des matières fissiles dans les réacteurs à caloporteur gazeux du futur (4ème génération). Dans cette thèse, nous avons utilisé la Résonance Paramagnétique Electronique et la Spectroscopie d'Annihilation de Positons pour étudier les propriétés (nature, taille, état de charge, migration et agglomération sous recuit) des défauts ponctuels natifs et induits par irradiation avec différentes particules (H+, e-, ions carbone) dans les polytypes 3C et 6H de SiC. L'étude par annihilation de positons des défauts natifs dans 6H-SiC a permis de mettre en évidence une forte concentration de pièges non lacunaires de type accepteur, qui ne sont pas présents dans les cristaux 3C-SiC. La nature des défauts détectés après irradiation aux électrons de basse énergie (190keV) dépend du polytype. En effet, si des paires de Frenkel de silicium et des monolacunes de carbone sont détectées dans les cristaux 6H, seules des monolacunes de carbone sont détectées dans les cristaux 3C. Nous proposons que ces différences quant aux populations de défauts ponctuels détectés résultent de valeurs différentes des énergies de seuil de déplacement du silicium dans les deux polytypes (environ 20eV pour 6H et 25eV pour 3C). Par ailleurs, les irradiations avec des protons de 12MeV et des ions carbone de 132MeV créent des monolacunes de silicium ainsi que des bilacunes VSi-VC. Ni la particule (protons ou ions carbone), ni le polytype (3C ou 6H) n'influent sur la nature des défauts générés. Enfin l'étude du recuit de monocristaux 6H-SiC irradiés avec des protons de 12MeV a permis de mettre en évidence plusieurs processus successifs. Le résultat le plus original est l'agglomération des monolacunes de silicium avec les bilacunes VSi-VC qui mène à la formation de trilacunes VSi-VC-VSi. Potential applications of silicon carbide (SiC) in micro-electronics have justified many studies on point defects, which play an important role in the electrical compensation. Moreover, this material has many assets to take part in the fissile materials confining in the gas cooled reactors of the future (4th generation). In this thesis, we have used Electronic Paramagnetic Resonance and Positron Annihilation Spectroscopy to study the properties of point defects (nature, size, charge state, migration and agglomeration during annealing), either native or induced by irradiation with various particles (H+, e-, carbon ions), in the 3C and 6H polytypes of SiC. The positron annihilation study of native defects in 6H-SiC has shown the presence of a strong concentration of non-vacancy traps of acceptor type, which are not present in the 3C-SiC crystals. The nature of the defects detected after irradiation with low energy electrons (190keV) depends on the polytype. Indeed, while silicon Frenkel pairs and carbon monovacancies are detected in the 6H crystals, only carbon monovacancies are detected in the 3C crystals. We propose that these differences concerning the populations of detected point defects result from different values of the silicon displacement threshold energy for the two polytypes (approximately 20eV for 6H and 25V for 3C). In addition, the irradiations with 12MeV protons and 132MeV carbon ions have created silicon monovacancies as well as VSi-VC divacancies. Neither the particle (protons or ions carbon), nor the polytype (3C or 6H) influence the nature of the generated defects. Finally the study of the annealing of 6H-SiC monocrystals irradiated with 12MeV protons have revealed several successive processes. The most original result is the agglomeration of the silicon monovacancies with the VSi-VC divacancies which leads to the formation of VSi-VC-VSi trivacancies.

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    Other literature type . 2006
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      Other literature type . 2006
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    Authors: Manet, Vincent;

    Ce document effectue une synthèse d'articles relatifs à la fatigue des composites. Les renforts 3D et essais accélérés sont aussi abordés.

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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/ Hyper Article en Lig...arrow_drop_down
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    Authors: Marie-Paule Poggi;

    Notre objectif est de comprendre la manière dont deux enseignants, exerçant en milieu difficile, prennent leur décision sous l’influence de trois types de déterminants (externe, situationnel et subjectif). Nous pouvons considérer que le curriculum en actes allie autonomie et ajustements liés aux contraintes du « sens pratique », devenant ainsi producteur « d’improvisations réglées » (Bourdieu, 1980). Par conséquent, le « contexte pertinent » (Lahire, 1998) de l’interaction didactique est à appréhender dans une perspective socio-didactique qui vise à observer de quelle manière les dispositions incorporées perdurent dans la situation mais également se reconfigurent au contact des contraintes de cette dernière selon un processus de contextualisation liant de façon interactive contexte et situation. Les résultats montrent que nos deux enseignants ne subissent pas de la même façon les contraintes externes qui pèsent sur eux et ne produisent pas et n’exploitent pas de manière identique ce qui émerge en situation. On note donc qu’à contexte externe équivalent, le curriculum en actes varie considérablement d’un enseignant à l’autre. Our goal is to understand how two teachers working in difficult areas, make their decision under the influence of three types of determinants (external, situational and subjective). We can consider that the curriculum acts combines autonomy and adjustments to the constraints of "practicality", becoming producer of "regulated improvisations" (Bourdieu, 1980). Therefore, the "relevant context" (Lahire, 1998) didactic interaction is to understand in a socio-didactic approach that aims to observe how the provisions incorporated in the situation persist but also reconfigure contact constraints the latter by a process of contextualisation binder interactive context and situation. The results show that both our teachers do not undergo the same external constraints on them and do not produce and do not operate the same way that emerges situation. We thus note that external environment equivalent curriculum in action varies considerably from one teacher to another.

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    OpenEdition
    Article . 2015
    Data sources: OpenEdition
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    Questions Vives
    Article . 2014
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      OpenEdition
      Article . 2015
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      Questions Vives
      Article . 2014
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    Authors: Turchet, Philippe;

    Cette thèse de Sciences du langage, s’inscrit dans le contexte de la communication interculturelle et se fonde sur l’analyse d’un corpus de 184112 mots (56 locuteurs, 10 nationalités), 9155 tours de paroles dialogiques. Il s’agit de rechercher un ou plusieurs indices mimogestuels de rupture de compréhension, en l’absence de verbalisation, chez le locuteur silencieux, durant l’interaction. La PARTIE I est un état des lieux concernant le repérage des ruptures de compréhension, en situation d’exolinguisme. La PARTIE II, expérimentation préliminaire (méthodologie et analyse de contenu), délimite 177 « blocs-textes », où s’encapsulent des ruptures de compréhension. Un item mimo-gestuel, lié à une excentration brève et rapide du regard (EB2R), souvent répliqué, est prélevé.La PARTIE III est une expérimentation princeps qui découle de l’expérimentation préliminaire. La variable indépendante (le langage verbal) et la variable dépendante (la mimogestualité), sont inversées, pour vérifier si les ruptures de compréhension, une fois rapportées aux critères verbaux corollaires, sont directement identifiables, à partir d’attitudes mimo-gestuelles précises. L’indice (EB2R) est donc systématiquement recherché dans le corpus : sa présence, largement répliquée, en situation de rupture de compréhension, suggère donc qu’il s’agit d’un signal de non-compréhension langagière. Ainsi, une corrélation forte entre le langage verbal et la gestualité non-consciente est bien objectivée, en situation dialogique, multiculturelle : ce repérage de moments de non-compréhension, dès leur incidence, pourrait être un réel apport à la didactique des langues, dans les sociétés cosmopolites d’aujourd’hui. This thesis of Language Science, in the context of intercultural communication, concerns an important corpus analysis (184112 words, 56 speakers, 10 nationalities and 9155 turns of speech). In order to find one or more mimogestual feature(s) of rupture of comprehension, the misunderstanding situation relates to the silent speaker, during the interaction.The PART I, is a theoretical state of play on the identification of breaks in comprehension, in exolinguism situation.PART II, is a Preliminary Experimentation (Methodology and Content Analysis): 177 "text-blocks" are delineated, where breaks of understanding are encapsulated. A mimo-gestual item, linked to a short and quick look shift (EB2R/SQLS), often replicated, is selected.PART III is a princeps experiment that arises from preliminary experimentation. The independent variable (the verbal language) and the dependent variable (the mimogestuality), are reversed, to check if the breaks of comprehension, once reported to the corollary verbal criteria, are directly identifiable, starting from precise mimogestual attitudes. The EB2R/SQLS is searched in the corpus, systematically: its presence, largely replicated, in a situation of broken comprehension, suggests that it is a signal of linguistic non-comprehension. Thus, a strong correlation between verbal language and non-conscious gestuality is well objectified, in a multicultural dialogic interaction: this identification of brocken enderstanding moments, as soon as they become, would be a real contribution to the didactics of languages, in the cosmopolitan societies of today.

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    Other literature type . 2017
    HAL Paris Nanterre
    Doctoral thesis . 2017
    Data sources: HAL Paris Nanterre
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    Authors: Duclos, Vincent;

    This Working Paper explores the relationship between space, media, and immunity in the work of Peter Sloterdijk. Modernity, argues Sloterdijk, may best be understood as a vast technical project aimed at compensating for a loss of insurance regarding our position in the world: the loss of a comforting roundness, of a being-inside the whole. What is at stake is therefore to design immune systems that are adapted for the burst and globalized spaces we inhabit. In dialogue with the work of Marshall McLuhan, this WP pays specific attention to our radical immersion in conditioning relations that operate upon us by the outside: in the media. Ce papier explore les relations entre espace, média et immunité dans l'oeuvre de Peter Sloterdijk. La modernité, pour Sloterdijk, est un vaste projet technique visant à compenser une perte d'assurance quant à notre position dans le monde : une perte du privilège de l'être-à-l'intérieur. Il s'agit alors de penser la création de systèmes immunitaires adaptés aux espaces éclatés et globalisés que nous habitons. En dialogue avec les travaux de Marshall McLuhan, ce papier accorde une attention particulière est accordée à notre immersion radicale dans ce qui nous dépasse et nous façonne de l'extérieur : le média.

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    Other literature type . 2015
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      Other literature type . 2015
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    Authors: Pigeron-Piroth, Isabelle; Le Texier, Marion; Belkacem, Rachid; Caruso, Geoffrey;

    Cet article étudie les déterminants individuels et territoriaux des navettes transfrontalières de travail ayant lieu depuis la France vers les pays voisins. L’objectif est de déceler si le travail transfrontalier se distingue des autres navettes, notamment des navettes effectuées par les actifs en dehors de leur propre aire urbaine. Nous mobilisons les données du recensement de la population de 2013 au niveau individuel et caractérisons le territoire à l'échelle des communes afin de capter la relative polarisation des lieux de résidence au sein du système urbain national. Sur base de modèles logistiques multinomiaux appliqués à toute la France ou à la façade frontalière, nous trouvons que les facteurs liés au genre, à l’âge, à l’éducation, au type et au secteur d’emploi, ou encore à la localisation de la résidence par rapport aux pôles d’emplois, en France expliquent les navettes vers une autre aire urbaine française comme les navettes transfrontalières. Cependant, l’effet sur le travail frontalier est souvent plus intense que l’effet de sortie vers une autre aire urbaine. Après avoir contrôlé l’effet des différents pays de travail, nous identifions encore clairement un comportement différencié des migrants résidentiels (élastiques) aux frontières ainsi qu’un effet de la distance à la frontière et de la densité d’emplois à proximité, sur les navettes transfrontalières. This article focuses on the individual and territorial determinants of cross-border commuting from France to its neighbouring countries. We seek to identify whether cross-border commuting is a distinct form of commuting, especially whether it differs for an active resident from commuting outside his/her reference functional urban area. We use individual data from the 2013 census and characterize the territory at the municipal scale in order to capture the relative polarisation of residential places within the national urban system. From our multinomial logistic models applied to the whole France or the border fringe, we find that gender, age, education, type and sector of activity, as well as the location of the commune with respect to employment poles in France, explain similarly the commute of active individuals towards another urban area in France and across the border. However, the effect is more intensive for cross-border commuting. After controlling the impact of the different neighbouring countries, we still clearly identify a different behaviour from elastic migrants in border areas and an effect of the distance to the border and of the job density on the cross-border commutes.

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    Authors: Huyghe, Richard;

    Cet article présente un état de la réflexion sur la sémantique des noms d’action (Nact) en français. Il s’agit dans un premier temps de déterminer les critères d’identification qui s’appliquent à l’ensemble des Nact, au-delà des prototypes déverbaux, agentifs et prédicatifs. L’aspect dynamique apparaît comme l’élément de définition fondamental de la catégorie. Il implique la double construction avec des expressions temporelles (de localisation ou de durée) et des verbes supports d’action ou d’événement (effectuer, avoir lieu, etc.). L’organisation interne de la classe des Nact est ensuite étudiée, et différents principes d’hétérogénéité sémantique sont détaillés. Il est établi que l’aspect nominal n’est pas calqué sur le modèle verbal, et que certaines propriétés descriptives, touchant à l’individuation des actions et à leur forme de réalisation, relèvent spécifiquement du domaine nominal. Sont enfin examinées les propriétés polysémiques des Nact, d’après leur capacité à dénoter d’autres participants de l’action (agents, instruments, résultats, etc.) et à associer en contexte les interprétations multiples. This paper provides a state-of-the-art overview of the semantics of action nouns (ANs) in French. First, the definition of ANs is investigated, as it should apply to all ANs, not only to prototypical deverbal, agentive and predicative nouns. Dynamicity appears to be the main definitional criterion, which implies that ANs occur with both temporal expressions (of location or duration) and actional or eventive light verbs (effectuer ‘make’, avoir lieu ‘take place’, etc.). Second, the heterogeneity of the AN category is studied, and some semantic differences between ANs are highlighted. It is claimed that nominal aspect does not tally with verbal aspect: there are semantic features related to the individuation of events and the way they occur that only exist in the nominal domain. Third, the polysemy of ANs is scrutinized regarding their ability to denote other participants in the event (agents, instruments, results, etc.), and their ability to combine multiple interpretations in context.

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    Other literature type . 2014
    HAL-Inserm
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    Authors: MALINGUMU SYOSYO, Crispin;

    Le présent article a pour objectif d'identifier la nature réelle du marché des télécommunications mobiles en République Démocratique du Congo. L'étude indique que le taux de pénétration du mobile est de 44,6% à fin 2014, supérieur à la moyenne africaine de 37%. Entre 2002 et 2007, le marché de la téléphonie mobile congolais est passé d'une structure oligopolistique à une concurrence monopolistique. Les nouvelles firmes accèdent sur le marché par l'acquisition des infrastructures des firmes suiveuses et, exceptionnellement, par l'investissement direct étranger. Dans la conquête des parts des marches, deux groupes d'acteurs interagissent sur le marché : les leaders qui commandent le jeu du marché et les suiveurs qui calquent leur comportement sur celui de leaders. L'étude révèle qu'en matière de tarification, les firmes optent pour deux modes : en prépayé et en mode post-paiement auquel est associé le principe de modulation horaire. L'étude indique, en outre que, la vive compétition entre les opérateurs passe par des stratégies marketing favorable à la qualité de service que par celle de réduction du prix des communications. Elle suggère aux pouvoirs publics de mettre en place un cadre réglementaire obligeant aux firmes d'assurer l'accès à leurs réseaux et définissant les normes de qualité en matière d'interconnexion et de service aux consommateurs. This article aims to identify the real nature of the mobile telecommunications market in the Democratic Republic of Congo. The study indicates that the mobile penetration rate is 44.6% at the end of 2014, higher than the African average of 37%. Between 2002 and 2007, the Congolese mobile market evolved from an oligopolistic structure to monopolistic competition. The new firms enter to the market through the acquisition of infrastructure from follower firms and exceptionally by foreign direct investment. In the conquest of the market shares, two groups of actors interact in the market: the leaders who control the market forces and followers who mimic their behavior on that of leaders. The study reveals that in terms of pricing, firms choose two modes: prepaid and post-payment method which is associated with the principle of hourly modulation. The study also indicates that the intense competition between operators is through marketing strategies favorable to the quality of service rather than by the reduction in the price of communications. It suggests to the government to set up a regulatory framework requiring firms to provide access to their networks and defining quality standards for interconnection and service to consumers.

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    Authors: Paviot, Y.;

    Les technologies actuelles permettent l'intégration de systèmes de plus en plus complexes sur une seule puce. L'augmentation de la complexité induit un accroissement du temps de conception alors que paradoxalement, le concurrence économique impose des temps de mise sur le marché de plus en plus courts. Pour tenter de limiter ce décalage et d'accroître la productivité, l'industrie fait de plus en plus appel à la réutilisation de composants logiciels et matériels pour concevoir leurs systèmes.L'un des problèmes de ce type de conception est celui de la réalisation de la communication entre composants. Cette thèse traite de la communication entre processeurs réalisée par des interfaces mixtes logicielles/matérielles. Leur difficulté de conception et l'impact du choix de partitionnement entre parties logicielles et matérielles nécessitent le développement de méthodes de génération automatique d'interfaces logicielles/matérielles pour l'exploration du partitionnement des services de communication.La contribution de cette thèse consiste en une formalisation des problèmes liés à l'implémentation mixte logicielle/matérielle des services de communication et une proposition de flot pour la génération automatique d'interfaces. Des expériences de réalisations de primitives MPI ont permis d'appréhender le problème et de proposer un flot de génération automatique. Current technologies enable the integration of more and more complex systems on a single chip. The increase in complexity leads to an increase of design time whereas economical competition demands to ever shorter time to market. In order to try to fill this gap and to increase productivity, reuse of HW and SW components to design systems is used more and more by industrial firms.One problem of these design methodologies is about communication between components. The topic of this thesis is hardware/software interface implementation for communication between processors. Interface design difficulties and impact of hardware/software partitioning require automatic interfaces generation in order to enable exploration of partitioning solutions.The contributions of this thesis are formalization of problems with regard to communication services implementation by hardware/software interface, and a suggestion of an automatic interfaces generation flow. Two experiences with MPI implementations led to understanding of the partitioning problematics and to an automatic generation flow.

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    Authors: Gadgil, A.J.; Lobscheid, C.; Abadie, Marc, O.; Finlayson, E.U.;

    n.a.

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    Article . 2003
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    Authors: Kerbiriou, Xavier;

    Les applications potentielles du carbure de silicium (SiC) en microélectronique ont motivé de nombreuses études sur les défauts ponctuels, qui jouent un rôle important dans la compensation électrique. Ce matériau possède en outre de nombreux atouts pour participer au confinement des matières fissiles dans les réacteurs à caloporteur gazeux du futur (4ème génération). Dans cette thèse, nous avons utilisé la Résonance Paramagnétique Electronique et la Spectroscopie d'Annihilation de Positons pour étudier les propriétés (nature, taille, état de charge, migration et agglomération sous recuit) des défauts ponctuels natifs et induits par irradiation avec différentes particules (H+, e-, ions carbone) dans les polytypes 3C et 6H de SiC. L'étude par annihilation de positons des défauts natifs dans 6H-SiC a permis de mettre en évidence une forte concentration de pièges non lacunaires de type accepteur, qui ne sont pas présents dans les cristaux 3C-SiC. La nature des défauts détectés après irradiation aux électrons de basse énergie (190keV) dépend du polytype. En effet, si des paires de Frenkel de silicium et des monolacunes de carbone sont détectées dans les cristaux 6H, seules des monolacunes de carbone sont détectées dans les cristaux 3C. Nous proposons que ces différences quant aux populations de défauts ponctuels détectés résultent de valeurs différentes des énergies de seuil de déplacement du silicium dans les deux polytypes (environ 20eV pour 6H et 25eV pour 3C). Par ailleurs, les irradiations avec des protons de 12MeV et des ions carbone de 132MeV créent des monolacunes de silicium ainsi que des bilacunes VSi-VC. Ni la particule (protons ou ions carbone), ni le polytype (3C ou 6H) n'influent sur la nature des défauts générés. Enfin l'étude du recuit de monocristaux 6H-SiC irradiés avec des protons de 12MeV a permis de mettre en évidence plusieurs processus successifs. Le résultat le plus original est l'agglomération des monolacunes de silicium avec les bilacunes VSi-VC qui mène à la formation de trilacunes VSi-VC-VSi. Potential applications of silicon carbide (SiC) in micro-electronics have justified many studies on point defects, which play an important role in the electrical compensation. Moreover, this material has many assets to take part in the fissile materials confining in the gas cooled reactors of the future (4th generation). In this thesis, we have used Electronic Paramagnetic Resonance and Positron Annihilation Spectroscopy to study the properties of point defects (nature, size, charge state, migration and agglomeration during annealing), either native or induced by irradiation with various particles (H+, e-, carbon ions), in the 3C and 6H polytypes of SiC. The positron annihilation study of native defects in 6H-SiC has shown the presence of a strong concentration of non-vacancy traps of acceptor type, which are not present in the 3C-SiC crystals. The nature of the defects detected after irradiation with low energy electrons (190keV) depends on the polytype. Indeed, while silicon Frenkel pairs and carbon monovacancies are detected in the 6H crystals, only carbon monovacancies are detected in the 3C crystals. We propose that these differences concerning the populations of detected point defects result from different values of the silicon displacement threshold energy for the two polytypes (approximately 20eV for 6H and 25V for 3C). In addition, the irradiations with 12MeV protons and 132MeV carbon ions have created silicon monovacancies as well as VSi-VC divacancies. Neither the particle (protons or ions carbon), nor the polytype (3C or 6H) influence the nature of the generated defects. Finally the study of the annealing of 6H-SiC monocrystals irradiated with 12MeV protons have revealed several successive processes. The most original result is the agglomeration of the silicon monovacancies with the VSi-VC divacancies which leads to the formation of VSi-VC-VSi trivacancies.

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    Other literature type . 2006
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      Other literature type . 2006
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    Authors: Manet, Vincent;

    Ce document effectue une synthèse d'articles relatifs à la fatigue des composites. Les renforts 3D et essais accélérés sont aussi abordés.

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    Authors: Marie-Paule Poggi;

    Notre objectif est de comprendre la manière dont deux enseignants, exerçant en milieu difficile, prennent leur décision sous l’influence de trois types de déterminants (externe, situationnel et subjectif). Nous pouvons considérer que le curriculum en actes allie autonomie et ajustements liés aux contraintes du « sens pratique », devenant ainsi producteur « d’improvisations réglées » (Bourdieu, 1980). Par conséquent, le « contexte pertinent » (Lahire, 1998) de l’interaction didactique est à appréhender dans une perspective socio-didactique qui vise à observer de quelle manière les dispositions incorporées perdurent dans la situation mais également se reconfigurent au contact des contraintes de cette dernière selon un processus de contextualisation liant de façon interactive contexte et situation. Les résultats montrent que nos deux enseignants ne subissent pas de la même façon les contraintes externes qui pèsent sur eux et ne produisent pas et n’exploitent pas de manière identique ce qui émerge en situation. On note donc qu’à contexte externe équivalent, le curriculum en actes varie considérablement d’un enseignant à l’autre. Our goal is to understand how two teachers working in difficult areas, make their decision under the influence of three types of determinants (external, situational and subjective). We can consider that the curriculum acts combines autonomy and adjustments to the constraints of "practicality", becoming producer of "regulated improvisations" (Bourdieu, 1980). Therefore, the "relevant context" (Lahire, 1998) didactic interaction is to understand in a socio-didactic approach that aims to observe how the provisions incorporated in the situation persist but also reconfigure contact constraints the latter by a process of contextualisation binder interactive context and situation. The results show that both our teachers do not undergo the same external constraints on them and do not produce and do not operate the same way that emerges situation. We thus note that external environment equivalent curriculum in action varies considerably from one teacher to another.

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    OpenEdition
    Article . 2015
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    Questions Vives
    Article . 2014
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