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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: Blouin, Max; Bourgeon, Jean-Marc;

    We examine an economy where professionals provide services to clients and where a professional can sell his practice to another. Professionals vary in quality, and clients in their need (or willingness-to-pay) for high-quality service. efficiency is measured as the number of matches between high-quality professionals and high-need clients. However, agent types are unobservable a priori. We find that trade in practices can facilitate the transmission of information about agent types; sometimes full efficiency is achieved. In cases where it is not, a tax on the sale of practices (based on the seller's age) can be used to achieve full efficiency. In addition, a ceiling on the price of services can be used to adjust the distribution of surplus between clients and professionals, while preserving efficiency.

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    Other literature type . 2008
    SSRN Electronic Journal
    Article . 2008
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  • Authors: Bossert, Walter; Clark, Andrew E.; d'Ambrosio, Conchita; Lepinteur, Anthony;

    Economic insecurity has attracted growing attention in social, academic and policy cir- cles. However, there is no consensus as to its precise de_nition. Intuitively, economic insecurity is multi-faceted, making any comprehensive formal de_nition that subsumes all possible aspects extremely challenging. We propose a simpli_ed approach, and character- ize a class of individual economic-insecurity measures that are based on the time pro_le of economic resources. We then apply our economic-insecurity measure to data on political preferences. In US, UK and German panel data, and conditional on current economic resources, economic insecurity is associated with both greater political participation (sup- port for a party or the intention to vote) and notably more support for parties on the right of the political spectrum. We in particular _nd that economic insecurity predicts greater support for both Donald Trump before the 2016 US Presidential election and the UK leaving the European Union in the 2016 Brexit referendum.

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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: Marco Andrello; François Guilhaumon; Camille Albouy; Valeriano Parravicini; +6 Authors

    Marine reserves are viewed as flagship tools to protect exploited species and to contribute to the effective management of coastal fisheries. Yet, the extent to which marine reserves are globally interconnected and able to effectively seed areas, where fisheries are most critical for food and livelihood security is largely unknown. Using a hydrodynamic model of larval dispersal, we predict that most marine reserves are not interconnected by currents and that their potential benefits to fishing areas are presently limited, since countries with high dependency on coastal fisheries receive very little larval supply from marine reserves. This global mismatch could be reversed, however, by placing new marine reserves in areas sufficiently remote to minimize social and economic costs but sufficiently connected through sea currents to seed the most exploited fisheries and endangered ecosystems. Nature Communications, 8 ISSN:2041-1723

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    Article . 2017
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    Europe PubMed Central
    Article . 2017
    Data sources: PubMed Central
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    Other literature type . 2017
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    Research Collection
    Article . 2017
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    Nature Communications
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    ETH Zürich Research Collection
    Article . 2017
    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/ NARCISarrow_drop_down
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      Europe PubMed Central
      Article . 2017
      Data sources: PubMed Central
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      Other literature type . 2017
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      Research Collection
      Article . 2017
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      Nature Communications
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      ETH Zürich Research Collection
      Article . 2017
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    Authors: E. Andrew Bennett; Isabelle Crevecoeur; Bence Viola; Anatoly P. Derevianko; +4 Authors

    A fully sequenced high-quality genome has revealed in 2010 the existence of a human population in Asia, the Denisovans, related to and contemporaneous with Neanderthals. Only five skeletal remains are known from Denisovans, mostly molars; the proximal fragment of a fifth finger phalanx used to generate the genome, however, was too incomplete to yield useful morphological information. Here, we demonstrate through ancient DNA analysis that a distal fragment of a fifth finger phalanx from the Denisova Cave is the larger, missing part of this phalanx. Our morphometric analysis shows that its dimensions and shape are within the variability of Homo sapiens and distinct from the Neanderthal fifth finger phalanges. Thus, unlike Denisovan molars, which display archaic characteristics not found in modern humans, the only morphologically informative Denisovan postcranial bone identified to date is suggested here to be plesiomorphic and shared between Denisovans and modern humans. The Denisovans had a genome close to Neanderthals, molars close to Homo erectus, and a phalanx close to Homo sapiens.

    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/ Science Advancesarrow_drop_down
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    Science Advances
    Article . 2019
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    Article . 2019
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    Science Advances
    Article . 2018
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      Article . 2019
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      Article . 2019
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      Science Advances
      Article . 2018
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    Authors: Ujjayant Chakravorty; Marie-Helene Hubert; Michel Moreaux; Linda Nostbakken;

    More than 40% of US corn is now used to produce biofuels, which are used as substitutes for gasoline in transportation. Biofuels have been blamed universally for past increases in world food prices, and many studies have shown that these energy mandates in the US and EU may have a large (30-60%) impact on food prices. In this paper, we use a partial equilibrium framework to show that demand-side effects – in the form of population growth and income-driven preferences for meat and dairy products rather than cereals – may play as much of a role in raising food prices as biofuel policy. By specifying a Ricardian model with differential land quality, we find that a significant amount of new land will be converted to farming, which is likely to cause a modest increase in food prices. However, biofuels may increase aggregate world carbon emissions, due to leakage from lower oil prices and conversion of pasture and forest land for farming.

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    SSRN Electronic Journal
    Article . 2015
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    Article . 2015
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    Authors: Courcy, I.; Laberge, S.; Erard, Carine; Louveau, Catherine;

    International audience; L'état des connaissances actuelles en sociologie du sport permet d'affirmer sans hésitation que les pratiques d'activité physique et sportive sont des pratiques sociales et culturelles (voir, entre autres, le numéro de Recherches féministes sur la question (vol. 17, no 1, 2004)). En ce sens, elles véhiculent des normes, sont le site de débats idéologiques et participent à la construction de rapports sociaux, dont les rapports sociaux de sexe. On a pu voir à travers l'histoire du sport que cette institution véhicule les normes sociales dominantes de la masculinité et de la féminité et, en conséquence, qu'elle participe à leur reproduction (Hargreaves 1994; Louveau 1981). L'application de ces normes se manifeste dans une sexuation des pratiques; certaines sont perçues et désignées comme davantage convenables ou appropriées pour les femmes (par exemple, le patinage artistique, la gymnastique artistique, le tennis), et d'autres, comme davantage légitimes pour les hommes (par exemple, le soccer-football, l'haltérophilie, les sports cyclistes). La sexuation des pratiques sportives a bien sûr entraîné une présence inégale des femmes et des hommes tant dans les sports de compétition (Légaré 19992; Louveau 2004b) que dans les activités de loisir (Louveau 2004a; Nolin et autres 2002). Parallèlement aux percées du mouvement féministe qui ont tenté de déconstruire ces normes en montrant leur caractère arbitraire (voir notamment Bryson (1983), Hall (1978) et Theberge (1985)), les femmes se sont progressivement adonnées, avec des différences selon leur classe sociale d'origine (Louveau 2006), à des sports jusqu'alors jugés plus appropriés pour les hommes; ainsi, elles ont fait leur entrée dans le monde de l'haltérophilie, du hockey sur glace, du cyclisme, du marathon, etc. Depuis les vingt dernières années, plusieurs chercheuses se sont penchées sur l'expérience de ces femmes qui " transgressent l'ordre social de genre3 " dans le domaine du sport

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    Other literature type . 2006
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    Authors: Avril, Sandrine; Clauss, Isabelle; Devaux, Valérie; Fabry, Cécilia; +1 Authors

    Références bibliographiques disséminées; Cette étude est centrée sur l’organisation de la recherche publique. Elle repose sur la synthèse d’informations collectées sur le web. Les sources d’information ont été sélectionnées en fonction de critères de pertinence, fiabilité et fraîcheur. Elle fait suite à une première réalisation sur ce thème datant d’avril 2005. L’information a été réactualisée et complétée par un zoom sur les statuts des personnels de Recherche. L’objectif reste identique, à savoir l’établissement d’une photographie des systèmes de recherche publique pour les pays suivants : Allemagne, Canada, États-Unis, France, Japon, Royaume-Uni, Suisse.Le niveau d’accès à l’information étant variable, il a été décidé de traiter chaque pays de manière indépendante sans chercher à établir de comparaison.

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    Authors: Brodeur, Abel; Connolly, Marie;

    International audience; In this paper, we investigate the effect of a change in child care subsidies on parental subjective well-being. Starting in 1997, the Canadian province of Quebec implemented a generous program providing $5-a-day child care to children under the age of 5. By 2007, the percentage of children attending subsidized day care had tripled and mothers’ labor force participation had increased substantially. Objectively, more labor force participation is seen as a positive change, bringing with it higher income, independence and bargaining power. Yet a decrease in women's subjective well-being over previous decades has been documented, perhaps due to a Second Shift effect where women work more but still bear the brunt of housework and childrearing ( Hochschild and Machung, 1989). Using data from the Canadian General Social Survey, we estimate a triple-differences model using differences pre- and post-reform between Quebec and the rest of Canada and between parents with young children and those with older children. Our estimates suggest that Quebec's family policies led to a small decrease in parents’ life satisfaction. Of note, though, we find large and positive effects for lower-educated mothers and fathers and negative effects for higher-educated parents. This is consistent with an income effect boosting subjective well-being for lower-educated parents and with negative effects on child outcomes overtaking income effects for more educated households.

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    Journal of Economic Behavior & Organization
    Article . 2013
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    Authors: Moïse, Claudine;

    International audience; Le projet Prise de parole et la question artistique : problématique et méthode La culture, ce mot galvaudé à force d'être entendu, répété et malmené parfois. La culture comme habitudes, traditions et coutumes, ces petits riens de la vie qui soudent un groupe en un même patrimoine culturel; de ces manières de vivre, de manger, de fêter, de s'habiller, de créer qui sont les marques d'une reconnaissance commune. La culture en son acception anthropologique, ethnicité 1 ou identité culturelle, dans un rapport à l'autre par différenciation, se construit à travers les traits biologiques communs aux membres d'un groupe (origine commune, sang, hérédité, ancêtres), les habitudes, les pratiques observables, « les gestes les plus simples » (Finkelkraut, 1987) de la vie, l'espace géographique que le groupe occupe, son extension dans le temps et l'espace, les données matérielles telles les danses, les cérémonies, les fêtes quotidiennes, finalement tout ce qui implique la réussite des interactions sociales. En ce sens, la culture est donnée tangible, analysable, repérable, offrant à chaque groupe ses caractéristiques propres. La création artistique et la production culturelle 2 participent alors de cette construction identitaire du groupe. Elles en occupent une place variable, aléatoire selon les communautés. Mais d'une manière comme une autre, en leur état, là où elles se trouvent, là où elles en sont, elles donnent à dire sur la quête identitaire-particulièrement des groupes minoritaires, voire dominés-, sur la façon et sur le désir de se construire et d'exister. Je voudrais donc voir ici, comment la perception, la relation, l'investissement par rapport à l'art et à la culture chez des locuteurs de la communauté franco-ontarienne rendent compte de positionnements à l'intérieur du groupe et définissent des frontières ethniques. Il s'agit, alors, à travers certains effets discursifs, de signaler ces frontières et ces oppositions, marques de 1 L'ethnicité définit souvent les groupes dominés tandis que l'identité culturelle est employée de façon plus large. 2 On entend par création artistique toute oeuvre de création (écriture, théâtre, musique, arts visuels, arts plastiques, etc.), et production culturelle, l'oeuvre prise dans tout le processus institutionnel de reconnaissance, de production et de diffusion. En ce sens, la culture relative à la création n'est qu'une composante (malgré l'homonymie des termes) de la culture… identitaire, au sens ethnologique.

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    Other literature type . 2003
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    Authors: Nikola Gradojevic; Deniz Erdemlioglu; Ramazan Gençay;

    International audience; We develop a new framework to characterize the dynamics of triangular (three-point) arbitrage in electronic foreign exchange markets. To examine the properties of arbitrage, we propose a wavelet-based regression approach that is robust to estimation errors, measurement bias and persistence. Relying on this wavelet-based (denoising) inference, we consider various liquidity and market risk indicators to predict arbitrage in a unique ultra-high-frequency exchange rate data set. We find strong empirical evidence that limit order book, realized volatility and cross-correlations help forecast triangular arbitrage profits. The estimates are statistically significant and relevant for investors such that on average 80−100 arbitrage opportunities exist with a short duration (100−500 ms) on a daily basis. Our analysis also reveals that triangular arbitrage opportunities are counter-cyclical at ultra-high-frequency levels: arbitrage returns tend to increase (decrease) in periods when volatility risk and correlations are relatively low (high). We show that liquidity-driven microstructure measures, however, appear to be more powerful in exploiting arbitrage profits when compared to market-driven factors.

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    Economic Modelling
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    Economic Modelling
    Article . 2020
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    Authors: Blouin, Max; Bourgeon, Jean-Marc;

    We examine an economy where professionals provide services to clients and where a professional can sell his practice to another. Professionals vary in quality, and clients in their need (or willingness-to-pay) for high-quality service. efficiency is measured as the number of matches between high-quality professionals and high-need clients. However, agent types are unobservable a priori. We find that trade in practices can facilitate the transmission of information about agent types; sometimes full efficiency is achieved. In cases where it is not, a tax on the sale of practices (based on the seller's age) can be used to achieve full efficiency. In addition, a ceiling on the price of services can be used to adjust the distribution of surplus between clients and professionals, while preserving efficiency.

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    Other literature type . 2008
    SSRN Electronic Journal
    Article . 2008
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  • Authors: Bossert, Walter; Clark, Andrew E.; d'Ambrosio, Conchita; Lepinteur, Anthony;

    Economic insecurity has attracted growing attention in social, academic and policy cir- cles. However, there is no consensus as to its precise de_nition. Intuitively, economic insecurity is multi-faceted, making any comprehensive formal de_nition that subsumes all possible aspects extremely challenging. We propose a simpli_ed approach, and character- ize a class of individual economic-insecurity measures that are based on the time pro_le of economic resources. We then apply our economic-insecurity measure to data on political preferences. In US, UK and German panel data, and conditional on current economic resources, economic insecurity is associated with both greater political participation (sup- port for a party or the intention to vote) and notably more support for parties on the right of the political spectrum. We in particular _nd that economic insecurity predicts greater support for both Donald Trump before the 2016 US Presidential election and the UK leaving the European Union in the 2016 Brexit referendum.

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    Authors: Marco Andrello; François Guilhaumon; Camille Albouy; Valeriano Parravicini; +6 Authors

    Marine reserves are viewed as flagship tools to protect exploited species and to contribute to the effective management of coastal fisheries. Yet, the extent to which marine reserves are globally interconnected and able to effectively seed areas, where fisheries are most critical for food and livelihood security is largely unknown. Using a hydrodynamic model of larval dispersal, we predict that most marine reserves are not interconnected by currents and that their potential benefits to fishing areas are presently limited, since countries with high dependency on coastal fisheries receive very little larval supply from marine reserves. This global mismatch could be reversed, however, by placing new marine reserves in areas sufficiently remote to minimize social and economic costs but sufficiently connected through sea currents to seed the most exploited fisheries and endangered ecosystems. Nature Communications, 8 ISSN:2041-1723

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    Article . 2017
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    Europe PubMed Central
    Article . 2017
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    Horizon / Pleins textes
    Other literature type . 2017
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    Article . 2017
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    Nature Communications
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    ETH Zürich Research Collection
    Article . 2017
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    Authors: E. Andrew Bennett; Isabelle Crevecoeur; Bence Viola; Anatoly P. Derevianko; +4 Authors

    A fully sequenced high-quality genome has revealed in 2010 the existence of a human population in Asia, the Denisovans, related to and contemporaneous with Neanderthals. Only five skeletal remains are known from Denisovans, mostly molars; the proximal fragment of a fifth finger phalanx used to generate the genome, however, was too incomplete to yield useful morphological information. Here, we demonstrate through ancient DNA analysis that a distal fragment of a fifth finger phalanx from the Denisova Cave is the larger, missing part of this phalanx. Our morphometric analysis shows that its dimensions and shape are within the variability of Homo sapiens and distinct from the Neanderthal fifth finger phalanges. Thus, unlike Denisovan molars, which display archaic characteristics not found in modern humans, the only morphologically informative Denisovan postcranial bone identified to date is suggested here to be plesiomorphic and shared between Denisovans and modern humans. The Denisovans had a genome close to Neanderthals, molars close to Homo erectus, and a phalanx close to Homo sapiens.

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    Science Advances
    Article . 2018
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      Science Advances
      Article . 2019
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      Science Advances
      Article . 2018
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    Authors: Ujjayant Chakravorty; Marie-Helene Hubert; Michel Moreaux; Linda Nostbakken;

    More than 40% of US corn is now used to produce biofuels, which are used as substitutes for gasoline in transportation. Biofuels have been blamed universally for past increases in world food prices, and many studies have shown that these energy mandates in the US and EU may have a large (30-60%) impact on food prices. In this paper, we use a partial equilibrium framework to show that demand-side effects – in the form of population growth and income-driven preferences for meat and dairy products rather than cereals – may play as much of a role in raising food prices as biofuel policy. By specifying a Ricardian model with differential land quality, we find that a significant amount of new land will be converted to farming, which is likely to cause a modest increase in food prices. However, biofuels may increase aggregate world carbon emissions, due to leakage from lower oil prices and conversion of pasture and forest land for farming.

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    SSRN Electronic Journal
    Article . 2015
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    SSRN Electronic Journal
    Article . 2015
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    Authors: Courcy, I.; Laberge, S.; Erard, Carine; Louveau, Catherine;

    International audience; L'état des connaissances actuelles en sociologie du sport permet d'affirmer sans hésitation que les pratiques d'activité physique et sportive sont des pratiques sociales et culturelles (voir, entre autres, le numéro de Recherches féministes sur la question (vol. 17, no 1, 2004)). En ce sens, elles véhiculent des normes, sont le site de débats idéologiques et participent à la construction de rapports sociaux, dont les rapports sociaux de sexe. On a pu voir à travers l'histoire du sport que cette institution véhicule les normes sociales dominantes de la masculinité et de la féminité et, en conséquence, qu'elle participe à leur reproduction (Hargreaves 1994; Louveau 1981). L'application de ces normes se manifeste dans une sexuation des pratiques; certaines sont perçues et désignées comme davantage convenables ou appropriées pour les femmes (par exemple, le patinage artistique, la gymnastique artistique, le tennis), et d'autres, comme davantage légitimes pour les hommes (par exemple, le soccer-football, l'haltérophilie, les sports cyclistes). La sexuation des pratiques sportives a bien sûr entraîné une présence inégale des femmes et des hommes tant dans les sports de compétition (Légaré 19992; Louveau 2004b) que dans les activités de loisir (Louveau 2004a; Nolin et autres 2002). Parallèlement aux percées du mouvement féministe qui ont tenté de déconstruire ces normes en montrant leur caractère arbitraire (voir notamment Bryson (1983), Hall (1978) et Theberge (1985)), les femmes se sont progressivement adonnées, avec des différences selon leur classe sociale d'origine (Louveau 2006), à des sports jusqu'alors jugés plus appropriés pour les hommes; ainsi, elles ont fait leur entrée dans le monde de l'haltérophilie, du hockey sur glace, du cyclisme, du marathon, etc. Depuis les vingt dernières années, plusieurs chercheuses se sont penchées sur l'expérience de ces femmes qui " transgressent l'ordre social de genre3 " dans le domaine du sport

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    Other literature type . 2006
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    Authors: Avril, Sandrine; Clauss, Isabelle; Devaux, Valérie; Fabry, Cécilia; +1 Authors

    Références bibliographiques disséminées; Cette étude est centrée sur l’organisation de la recherche publique. Elle repose sur la synthèse d’informations collectées sur le web. Les sources d’information ont été sélectionnées en fonction de critères de pertinence, fiabilité et fraîcheur. Elle fait suite à une première réalisation sur ce thème datant d’avril 2005. L’information a été réactualisée et complétée par un zoom sur les statuts des personnels de Recherche. L’objectif reste identique, à savoir l’établissement d’une photographie des systèmes de recherche publique pour les pays suivants : Allemagne, Canada, États-Unis, France, Japon, Royaume-Uni, Suisse.Le niveau d’accès à l’information étant variable, il a été décidé de traiter chaque pays de manière indépendante sans chercher à établir de comparaison.

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    Authors: Brodeur, Abel; Connolly, Marie;

    International audience; In this paper, we investigate the effect of a change in child care subsidies on parental subjective well-being. Starting in 1997, the Canadian province of Quebec implemented a generous program providing $5-a-day child care to children under the age of 5. By 2007, the percentage of children attending subsidized day care had tripled and mothers’ labor force participation had increased substantially. Objectively, more labor force participation is seen as a positive change, bringing with it higher income, independence and bargaining power. Yet a decrease in women's subjective well-being over previous decades has been documented, perhaps due to a Second Shift effect where women work more but still bear the brunt of housework and childrearing ( Hochschild and Machung, 1989). Using data from the Canadian General Social Survey, we estimate a triple-differences model using differences pre- and post-reform between Quebec and the rest of Canada and between parents with young children and those with older children. Our estimates suggest that Quebec's family policies led to a small decrease in parents’ life satisfaction. Of note, though, we find large and positive effects for lower-educated mothers and fathers and negative effects for higher-educated parents. This is consistent with an income effect boosting subjective well-being for lower-educated parents and with negative effects on child outcomes overtaking income effects for more educated households.

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    Journal of Economic Behavior & Organization
    Article . 2013
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    Authors: Moïse, Claudine;

    International audience; Le projet Prise de parole et la question artistique : problématique et méthode La culture, ce mot galvaudé à force d'être entendu, répété et malmené parfois. La culture comme habitudes, traditions et coutumes, ces petits riens de la vie qui soudent un groupe en un même patrimoine culturel; de ces manières de vivre, de manger, de fêter, de s'habiller, de créer qui sont les marques d'une reconnaissance commune. La culture en son acception anthropologique, ethnicité 1 ou identité culturelle, dans un rapport à l'autre par différenciation, se construit à travers les traits biologiques communs aux membres d'un groupe (origine commune, sang, hérédité, ancêtres), les habitudes, les pratiques observables, « les gestes les plus simples » (Finkelkraut, 1987) de la vie, l'espace géographique que le groupe occupe, son extension dans le temps et l'espace, les données matérielles telles les danses, les cérémonies, les fêtes quotidiennes, finalement tout ce qui implique la réussite des interactions sociales. En ce sens, la culture est donnée tangible, analysable, repérable, offrant à chaque groupe ses caractéristiques propres. La création artistique et la production culturelle 2 participent alors de cette construction identitaire du groupe. Elles en occupent une place variable, aléatoire selon les communautés. Mais d'une manière comme une autre, en leur état, là où elles se trouvent, là où elles en sont, elles donnent à dire sur la quête identitaire-particulièrement des groupes minoritaires, voire dominés-, sur la façon et sur le désir de se construire et d'exister. Je voudrais donc voir ici, comment la perception, la relation, l'investissement par rapport à l'art et à la culture chez des locuteurs de la communauté franco-ontarienne rendent compte de positionnements à l'intérieur du groupe et définissent des frontières ethniques. Il s'agit, alors, à travers certains effets discursifs, de signaler ces frontières et ces oppositions, marques de 1 L'ethnicité définit souvent les groupes dominés tandis que l'identité culturelle est employée de façon plus large. 2 On entend par création artistique toute oeuvre de création (écriture, théâtre, musique, arts visuels, arts plastiques, etc.), et production culturelle, l'oeuvre prise dans tout le processus institutionnel de reconnaissance, de production et de diffusion. En ce sens, la culture relative à la création n'est qu'une composante (malgré l'homonymie des termes) de la culture… identitaire, au sens ethnologique.

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    Authors: Nikola Gradojevic; Deniz Erdemlioglu; Ramazan Gençay;

    International audience; We develop a new framework to characterize the dynamics of triangular (three-point) arbitrage in electronic foreign exchange markets. To examine the properties of arbitrage, we propose a wavelet-based regression approach that is robust to estimation errors, measurement bias and persistence. Relying on this wavelet-based (denoising) inference, we consider various liquidity and market risk indicators to predict arbitrage in a unique ultra-high-frequency exchange rate data set. We find strong empirical evidence that limit order book, realized volatility and cross-correlations help forecast triangular arbitrage profits. The estimates are statistically significant and relevant for investors such that on average 80−100 arbitrage opportunities exist with a short duration (100−500 ms) on a daily basis. Our analysis also reveals that triangular arbitrage opportunities are counter-cyclical at ultra-high-frequency levels: arbitrage returns tend to increase (decrease) in periods when volatility risk and correlations are relatively low (high). We show that liquidity-driven microstructure measures, however, appear to be more powerful in exploiting arbitrage profits when compared to market-driven factors.

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    Economic Modelling
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    Economic Modelling
    Article . 2020
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