24 research outputs found
Concentration for Coulomb gases and Coulomb transport inequalities
We study the non-asymptotic behavior of Coulomb gases in dimension two and
more. Such gases are modeled by an exchangeable Boltzmann-Gibbs measure with a
singular two-body interaction. We obtain concentration of measure inequalities
for the empirical distribution of such gases around their equilibrium measure,
with respect to bounded Lipschitz and Wasserstein distances. This implies
macroscopic as well as mesoscopic convergence in such distances. In particular,
we improve the concentration inequalities known for the empirical spectral
distribution of Ginibre random matrices. Our approach is remarkably simple and
bypasses the use of renormalized energy. It crucially relies on new
inequalities between probability metrics, including Coulomb transport
inequalities which can be of independent interest. Our work is inspired by the
one of Ma{\"i}da and Maurel-Segala, itself inspired by large deviations
techniques. Our approach allows to recover, extend, and simplify previous
results by Rougerie and Serfaty.Comment: Improvement on an assumption, and minor modification
DLR equations and rigidity for the Sine-beta process
We investigate Sine, the universal point process arising as the
thermodynamic limit of the microscopic scale behavior in the bulk of
one-dimensional log-gases, or -ensembles, at inverse temperature
. We adopt a statistical physics perspective, and give a description
of Sine using the Dobrushin-Lanford-Ruelle (DLR) formalism by proving
that it satisfies the DLR equations: the restriction of Sine to a
compact set, conditionally to the exterior configuration, reads as a Gibbs
measure given by a finite log-gas in a potential generated by the exterior
configuration. Moreover, we show that Sine is number-rigid and tolerant
in the sense of Ghosh-Peres, i.e. the number, but not the position, of
particles lying inside a compact set is a deterministic function of the
exterior configuration. Our proof of the rigidity differs from the usual
strategy and is robust enough to include more general long range interactions
in arbitrary dimension.Comment: 46 pages. To appear in Communications on Pure and Applied Mathematic
Quelles approches possibles du terrain chinois en communication organisationnelle? Situation et retour dâexpĂ©rience
Cet article examine les diffĂ©rentes mĂ©thodes de recherche envisageables en communication organisationnelle en Chine, Ă partir de la littĂ©rature et dâun retour dâexpĂ©rience, en trois parties. Dans la premiĂšre, nous proposons un court aperçu de lâorganisation acadĂ©mique des chercheurs en communication en Chine, en mettant en avant lâaspect dispersĂ© de la recherche et le manque de recherches sur la communication en entreprise. Nous examinons dans un deuxiĂšme temps les mĂ©thodes de recherche gĂ©nĂ©ralement utilisĂ©es pour Ă©tudier la communication organisationnelle en Chine et soulignons les besoins en mĂ©thodes qualitatives. Nous rĂ©sumons dans une derniĂšre partie notre expĂ©rience en Chine, en mettant en avant les difficultĂ©s que nous avons rencontrĂ©es sur le terrain.Using the literature and her own experience, the author examines the existing research methods in organizational communication and their applicability to the Chinese fieldwork. First, the Chinese academic organization in the field of communication is examined and the lack of research on organizational communication is outlined. Then the author reviews existing methods in organizational communication in China and shows the lack of qualitative methods. The last part describes the authorâs own experience on the Chinese fieldwork and highlights the problems she has encountered there
Lâontologie variable des actants : pour une Ă©pistĂ©mologie renouvelĂ©e dans les recherches sur les rĂ©seaux
Cet article discute un modĂšle original qui permet de dĂ©passer les antagonismes des diffĂ©rentes Ă©coles de pensĂ©e qui sâintĂ©ressent Ă la modĂ©lisation des rĂ©seaux sociaux. Nous faisons ici le pari quâun dialogue est possible entre les approches TIC et les approches SHS car les rĂ©seaux sont Ă la fois sociaux et techniques pour relier les utilisateurs entre eux. Les rĂ©seaux sont des formes dâorganisations complexes ontologiquement hĂ©tĂ©rogĂšnes.This paper presents an original model that can overcome the antagonisms of different schools of thought with regard to the modeling of social networks.We make here the bet that a dialogue is possible between the approaches ICTS and the human sciences because networks are at the same time social and technical to connect the users between them. Networks are forms of complex and heterogeneous organizations
Lâimage de lâ« entreprise exemplaire » en Chine
Dans un pays en transition Ă©conomique comme la Chine, les actions communicationnelles des entreprises sont autant tournĂ©es vers le gouvernement que vers les clients ou autres parties prenantes et acteurs sociaux. La prĂ©sence de lâEtat dans la vie socio-Ă©conomique conduit Ă une certaine uniformitĂ© informationnelle et discursive. Dans un tel contexte, lâimage des entreprises peut se concevoir comme une forme de reprĂ©sentation sociale rĂ©sultant dâune construction communicationnelle collective Ă un niveau inter-organisationnel. Lâarticle Ă©tudie la complexitĂ© de cette construction en observant comment est construite la notion dâexemplaritĂ© des entreprises dans la communication institutionnelle, comment cette notion est rĂ©investie par les entreprises dans leurs offres dâemploi, et comment leur cible perçoit et construit cette notion.In Chinaâs transitional economy, companies publicize themselves according to their relationships with the government as well as with their clients and other stakeholders or social actors. Stateâs involvement in the socio-economic life produces a form of informational and discursive uniformity. In such a context, companiesâ image is considered as the result of a collective construction at the interorganizational level. This article aims to study the complexity of such a social construction by examining how the concept of companiesâ âexemplarityâ is constructed by institutions, how companies use the concept in their online job postings, and how their target perceives and constructs the concept
Compétence de communication, stratégie et intelligence économique en Chine
Cet article propose un cadre thĂ©orique pour lâĂ©tude des compĂ©tences de communication mises en place dans les activitĂ©s dâintelligence Ă©conomique en Chine, en particulier dans le cadre du recueil dâinformations de source humaine et lâutilisation du rĂ©seau de relations interpersonnelles. BasĂ©e sur une approche anthropologique et un terrain de plusieurs annĂ©es, cette recherche part de la conception chinoise de la communication et de la stratĂ©gie pour en dĂ©finir les liens et montrer comment le communicateur chinois se positionne comme stratĂšge dans la construction et lâutilisation de son rĂ©seau social. Ă partir des stratĂ©gies ainsi dĂ©finies, lâarticle dĂ©veloppe un cadre de compĂ©tences de communication actionnables en situation de recueil dâinformations orales.This paper aims to build a theoretical framework for the study of the communication compentencies needed in competitive intelligence activities in China, with a focus on information collection from human sources and the use of interpersonal networks. It studies the Chinese conception of communication and strategy as well as their relationships from an anthropological approach that is based on a field work carried out over several years. The research examines how the Chinese communicator positions him/herself as a strategist during the construction and the use of his/her social network and it defines these strategies. A framework for communication competencies is then proposed that can be implemented to collect information from oral sources
Analyser les stratĂ©gies chinoises liĂ©es Ă la Covid-19 : un cas dâĂ©tude pour lâintelligence stratĂ©gique
Dans un monde de plus en plus engagĂ© dans les guerres du sens entre grandes puissances, comment un analyste peut-il faire sens des informations partielles apparaissant au fur et Ă mesure du dĂ©roulement des Ă©vĂ©nements ? Ă travers plusieurs exemples liĂ©s aux stratĂ©gies chinoises dĂ©ployĂ©es entre janvier et septembre 2019 dans le cadre de la pandĂ©mie de Covid-19, lâarticle examine lâintelligence stratĂ©gique chinoise Ă lâĆuvre, en mĂȘme temps quâil sâinterroge sur lâintelligence stratĂ©gique au sens analytique du terme, et plus particuliĂšrement sur les mĂ©canismes de lâanalyse elle-mĂȘme
Translating the Communication Sciences in China: the âChuanboxueâ Concept
This article sets out to show that language in translation plays a performative role, because the terms it uses effectively retranslate social norms and institutional positions that were built up in a different culture and in different historical circumstances. In the case of the emerging communication sciences in China, American concepts on communication, which arrived in translation, came to encounter Chinese norms and positions on journalism and propaganda, and this caused a mutual reconfiguration of the actants, both social and linguistic. We look here at how the Chinese socio-cultural system re-created its own local order in the form of a discipline which is specific to the country, âxinwen chuanboxueâ (sciences of journalistic communication).Cet article se propose de montrer que le langage en traduction joue un rĂŽle performatif parce que les termes quâil emploie retraduisent des normes sociales et des positions institutionnelles construites dans une autre culture, avec dâautres conditions historiques. Dans le cas de la naissance des sciences de la communication en Chine, des concepts amĂ©ricains sur la communication sont venus par leur traduction Ă la rencontre des normes et positions chinoises sur le journalisme et la propagande, engendrant une reconfiguration mutuelle des actants, quâils soient sociaux ou langagiers. Nous Ă©tudions comment le systĂšme socio-culturel de la Chine a recrĂ©Ă© un ordre local propre sous la forme dâune discipline spĂ©cifique Ă ce pays, xinwen chuanboxue (les « sciences de la communication journalistique »)
#Guanxi @ChineAfriqueâŻ: la mobilisation des relations interpersonnelles dans la diplomatie publique chinoise Ă lâheure de numĂ©rique
International audienceThe Chinese government has implemented a new public diplomacy strategy that highlights the interpersonal dimension of the relationship to change the controversial image of its presence in Africa. Narratives involving interpersonal relationships are used by Chinese mediaâs Twitter platforms to endorse the latest political statement on China-Africa Community of shared future for mankind. By studying the different discursive practices of Chinese media, which are seen as the governmentâs or the partyâs spokespersons, towards international target audiences on Twitter, this article attempts to show how Beijing mobilizes interpersonal relationships in its public diplomacy through social media.En vue de modifier lâimage controversĂ©e de sa prĂ©sence en Afrique, le gouvernement chinois a mis en Ćuvre une nouvelle stratĂ©gie de diplomatie publique qui place en avant la dimension interpersonnelle de la relation. Les rĂ©cits englobant des relations interpersonnelles sont mobilisĂ©s par les relais mĂ©diatiques chinois dans Twitter pour soutenir lâargument rĂ©cemment convoquĂ© dans la stratĂ©gie chinoise dâune communautĂ© Chine-Afrique de destin. En examinant les diffĂ©rentes pratiques discursives des mĂ©dias chinois, qui sont considĂ©rĂ©s comme porte-parole gouvernementaux et partisans, envers leurs publics cibles sur Twitter, cet article Ă©tudie la maniĂšre dont PĂ©kin mobilise des relations interpersonnelles dans sa diplomatie publique par le biais des mĂ©dias sociaux
#Guanxi @ChineAfriqueâŻ: La mobilisation des relations interpersonnelles dans la diplomatie publique chinoise Ă lâheure de numĂ©rique
International audienceThe Chinese government has implemented a new public diplomacy strategy that highlights the interpersonal dimension of the relationship to change the controversial image of its presence in Africa. Narratives involving interpersonal relationships are used by Chinese mediaâs Twitter platforms to endorse the latest political statement on China-Africa Community of shared future for mankind. By studying the different discursive practices of Chinese media, which are seen as the governmentâs or the partyâs spokespersons, towards international target audiences on Twitter, this article attempts to show how Beijing mobilizes interpersonal relationships in its public diplomacy through social media.En vue de modifier lâimage controversĂ©e de sa prĂ©sence en Afrique, le gouvernement chinois a mis en Ćuvre une nouvelle stratĂ©gie de diplomatie publique qui place en avant la dimension interpersonnelle de la relation. Les rĂ©cits englobant des relations interpersonnelles sont mobilisĂ©s par les relais mĂ©diatiques chinois dans Twitter pour soutenir lâargument rĂ©cemment convoquĂ© dans la stratĂ©gie chinoise dâune communautĂ© Chine-Afrique de destin. En examinant les diffĂ©rentes pratiques discursives des mĂ©dias chinois, qui sont considĂ©rĂ©s comme porte-parole gouvernementaux et partisans, envers leurs publics cibles sur Twitter, cet article Ă©tudie la maniĂšre dont PĂ©kin mobilise des relations interpersonnelles dans sa diplomatie publique par le biais des mĂ©dias sociaux