Academic literature on the topic 'Diffusion de l’information'
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Journal articles on the topic "Diffusion de l’information"
Foskett, David J. "L’information et l’imagination créatrice." Documentation et bibliothèques 32, no. 1-2 (October 22, 2018): 35–42. http://dx.doi.org/10.7202/1052710ar.
Full textBergeron, Pierrette, and Gilles Deschatelets. "Étude d’expériences américaines et européennes de diffusion électronique d’information gouvernementale." Documentation et bibliothèques 42, no. 2 (September 29, 2015): 65–79. http://dx.doi.org/10.7202/1033283ar.
Full textCette, Gilbert, Jacques Mairesse, and Yusuf Kocoglu. "Effets de la diffusion des technologies de l’information sur la croissance potentielle et observée." Articles : Technologies de l’information : diffusion et externalités 81, no. 1-2 (April 24, 2006): 203–30. http://dx.doi.org/10.7202/012842ar.
Full textNicolai, Alexander, and Jantje Halberstadt. "La diffusion internationale d’idées commerciales." Revue internationale P.M.E. 21, no. 3-4 (September 18, 2009): 117–43. http://dx.doi.org/10.7202/038037ar.
Full textPoncet, Laurent. "La diffusion de l’information sur la biodiversité en France." Netcom, no. 27-1/2 (September 1, 2013): 181–89. http://dx.doi.org/10.4000/netcom.1306.
Full textClément, Brigitte. "LaLIST, veille et diffusion de l’information scientifique et technique." C'est pas demain la veille !, no. 92 (January 1, 2019): 10–11. http://dx.doi.org/10.35562/arabesques.102.
Full textPatry, Hélène, and Pâquerette Ranger. "Services au public et services techniques : conflit ou complémentarité ?" Documentation et bibliothèques 21, no. 3 (January 15, 2019): 143–49. http://dx.doi.org/10.7202/1055394ar.
Full textAtrostic, Barbara K., Peter Boegh-Nielsen, Kazuyuki Motohashi, and Sang Nguyen. "Technologies de l’information, productivité et croissance des entreprises : résultats basés sur de nouvelles microdonnées internationales." Articles : Technologies de l’information et croissance de la productivité : une perspective microéconomique 81, no. 1-2 (April 24, 2006): 255–79. http://dx.doi.org/10.7202/012844ar.
Full textLarivière, Jules. "Les nouvelles technologies de l’information documentaire et le droit d’auteur." Documentation et bibliothèques 42, no. 3 (September 18, 2015): 111–16. http://dx.doi.org/10.7202/1033261ar.
Full textChouchana, Laurent, Marine Auffret, and Hélène Geniaux. "Twitter®, un outil de formation médicale continue ?" Pédagogie Médicale 19, no. 2 (2018): 91–93. http://dx.doi.org/10.1051/pmed/2019014.
Full textDissertations / Theses on the topic "Diffusion de l’information"
Senn, Juliette. "L’information comptable à caractère environnemental dans un cadre réglementaire : de la diffusion à l’utilisation de l’information." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTD029.
Full textCorporate environmental reporting is becoming more and more widespread and regulated. This dissertation specifically focuses on environmental accounting information (EAI) in this context. Our research draws on neo-institutional theory and concerns the concept of normativity. Three empirical studies, each dealing with one dimension of the information disclosure process, are conducted. They are all carried out in the French regulatory context. The first study examines how companies disclose EAI and the strategies adopted after the adoption of a new law. Based on a content analysis of the annual reports of 96 listed companies over the period 2009-2014, the results show that the law did not favor greater transparency in the EAI and we observe that companies choose different reponses to the law. The second study focuses on behind the scenes of these strategies to identify how producers of information organize themselves to respond to the regulations they are subject to. The results of 8 case studies show that two distinct strategies appear depending on the type of EAI. The third study focuses on the users of information behavior and how they react to the firms’ disclosure strategies. We consider the point of view of financial analysts by investigating the effect of firms’ EAI disclosure strategies on investment recommendations and perceptions of this item (as regards to both the relevance and credibility of information). Through an experimental study conducted with 145 participants, it turned out that these strategies modify both the perception of relevance and credibility of information. Overall, the dissertation contributes to our understanding of how companies (and actors) develop strategies to adapt to the introduction of new regulations
Guille, Adrien. "Diffusion de l’information dans les médias sociaux : modélisation et analyse." Thesis, Lyon 2, 2014. http://www.theses.fr/2014LYO22015/document.
Full textSocial media have greatly modified the way we produce, diffuse and consume information, and have become powerful information vectors. The goal of this thesis is to help in the understanding of the information diffusion phenomenon in social media by providing means of modeling and analysis.First, we propose MABED (Mention-Anomaly-Based Event Detection), a statistical method for automatically detecting events that most interest social media users from the stream of messages they publish. In contrast with existing methods, it doesn't only focus on the textual content of messages but also leverages the frequency of social interactions that occur between users. MABED also differs from the literature in that it dynamically estimates the period of time during which each event is discussed rather than assuming a predefined fixed duration for all events. Secondly, we propose T-BASIC (Time-Based ASynchronous Independent Cascades), a probabilistic model based on the network structure underlying social media for predicting information diffusion, more specifically the evolution of the number of users that relay a given piece of information through time. In contrast with similar models that are also based on the network structure, the probability that a piece of information propagate from one user to another isn't fixed but depends on time. We also describe a procedure for inferring the latent parameters of that model, which we formulate as functions of observable characteristics of social media users. Thirdly, we propose SONDY (SOcial Network DYnamics), a free and extensible software that implements state-of-the-art methods for mining data generated by social media, i.e. the messages published by users and the structure of the social network that interconnects them. As opposed to existing academic tools that either focus on analyzing messages or analyzing the network, SONDY permits the joint analysis of these two types of data through the analysis of influence with respect to each detected event.The experiments, conducted on data collected on Twitter, demonstrate the relevance of our proposals and shed light on some properties that give us a better understanding of the mechanisms underlying information diffusion. First, we compare the performance of MABED against those of methods from the literature and find that taking into account the frequency of social interactions between users leads to more accurate event detection and improved robustness in presence of noisy content. We also show that MABED helps with the interpretation of detected events by providing clearer textual description and more precise temporal descriptions. Secondly, we demonstrate the relevancy of the procedure we propose for estimating the pairwise diffusion probabilities on which T-BASIC relies. For that, we illustrate the predictive power of users' characteristics, and compare the performance of the method we propose to estimate the diffusion probabilities against those of state-of-the-art methods. We show the importance of having non-constant diffusion probabilities, which allows incorporating the variation of users' level of receptivity through time into T-BASIC. We also study how -- and in which proportion -- the social, topical and temporal characteristics of users impact information diffusion. Thirdly, we illustrate with various scenarios the usefulness of SONDY, both for non-experts -- thanks to its advanced user interface and adapted visualizations -- and for researchers -- thanks to its application programming interface
Karam, Arzé. "Révélation de l’information des analystes et tenue de marché sur le NASDAQ." Thesis, Paris 10, 2010. http://www.theses.fr/2010PA100110.
Full textThis dissertation focuses on the impact of informed market makers’ behavior on NASDAQ, where some market makers may possess information from their analysts affiliated to the same brokerage firm. The motivation for this research is driven by the fact that the extant literature is yet to provide a satisfactory explanation for the impact of informed market making on market quality. The dissertation uses state-of-the-art econometric modeling to perform comprehensive empirical tests of the existing theory on the subject. It addresses also the issue of pre-trade anonymity by examining the role of SIZE around the analyst report and in intraday analysis. This feature, presently named NSDQ, provides market makers the possibility to hide their identifiers while quoting on the book. The results show that the inside spread prior the announcement is lower in case of affiliation; and, the non anonymous quotes contribute the most in terms of information shares relative to SIZE quotes prior the announcement of the affiliated analyst report. In intraday analysis, SIZE quotes vary with market conditions throughout the day. The findings from this dissertation have implications for market design. The SEC’s stated position is that information regulation and increased transparency are fundamental to market fairness. However, the results suggest that the environment of significant information sharing presents lower trading costs and thus better market quality. Further, the option to quote anonymously gives market makers the ability to protect themselves from informed traders throughout the day
Plot-Vicard, Emmanuelle. "L’information diffusée par l’exploitant sur le risque nucléaire : quelle réponse aux attentes des parties prenantes ?" Paris 9, 2010. https://bu.dauphine.psl.eu/fileviewer/index.php?doc=2010PA090009.
Full textThe objective of this research is to know if there are distances between the expectations of the stakeholders and the information disclosed by the firm on the nuclear risk in its annual report. First of all, I wonder about the motives which lead companies to disclose environmental information, by associating the theories of the legitimacy and the stakeholders. I notice then the report which the financial accounting does not allow to report the whole nuclear risk. In particular, accounting (provision and contingent liability) does not integrate the risks of uncertain occurrence with important possible damages, as the risk of nuclear accident. Consequently, this research widens the field of analysis beyond financial status to contain all the information disclosed by the firm in its annual report. I determine the expectations of the stakeholders in information on the nuclear risk, then confront these expectations with the information disclosed by the firms in their annual report. Two additional measures allow me to analyze this information. The first one which describes the information indicates that only 7% of the disclosed information about the nuclear risk in annual reports is quantitative visible information for the reader and dealing with precise objectives or with concrete programs led by the firms. The second measure deals with the quality of the information. It suggests that a lot of information wished by the stakeholders is not disclosed. All in all, the expectations of the regulating, financial and media stakeholders seem satisfied but those of the stakeholders of the environmental lobby groups would not be
Oumarou, Mahamane Laouali. "Technologie de l’information et de la communication et développement économique : les enjeux et les opportunités au Niger." Thesis, Paris 10, 2011. http://www.theses.fr/2011PA100231.
Full textNiger is a landlocked country in West Africa. Its position on the outskirts of essential poles in the under-region partly explains its delayed development. To this is added, a further delay, called digital divide. Its fleet of obsolete infrastructure does not allow it to take full advantage of global flows of information to take advantage of the competitiveness of the new information society. Spurred on by recent international discussions on new technologies, it appears that the economic development of Niger would require an appropriation of ICTs by the population. Therefore, these new information technologies are at the epicenter of development issues facing the Niger. This research was given the objective to analyze the current system of ICT in Niger and its ability to set off economic development in a context of globalization of economies based on information, knowledge and expertise, by using ICTs. Following this analysis and the questions it poses, some economic theories have emerged, the information economy and its derivatives. In the second time, this study explores, describes, explains, interprets and illustrates these theories in the context of ICTs access. Illustrative examples show that ICT correct some of these predictions. ICT improves human capital, refine agents' anticipations and reduce the risk of economic decisions. That’s why, ICTs can be considered as an economic development factor in Niger. In this revolution of new technologies, the economies have not necessarily need to go through the stage of industrialization as the old theories. The example of China and the Asian dragons shows that
Mekinda, Mengue Leonce. "Mécanismes de cache, traitement et diffusion de l'information dans les réseaux centrés sur l'information (ICN)." Thesis, Paris, ENST, 2016. http://www.theses.fr/2016ENST0075/document.
Full textThis thesis investigates how making content caching and forwarding latency-aware can improve data delivery performance in Information-Centric Networks (ICN). We introduce a new mechanism that leverages retrieval time observations to decide whether to store an object in a network cache, based on the expected delivery time improvement. We demonstrate that our distributed latency-aware caching mechanism, LAC+, outperforms state of the art proposals and results in a reduction of the content mean delivery time and standard deviation of LRU caches by up to 60%, along with a fast convergence to these figures. In a second phase, we conjointly optimize the caching function and the multipath request forwarding strategies. To this purpose, we introduce the mixed forwarding strategy LB-Perf, directing the most popular content towards the same next hops to foster egress caches convergence, while load-balancing the others. Third, we address ICN fairness to contents. We show that traditional ICN caching, which favors the most popular objects, does not prevent the network from being globally fair, content-wise. The incidence of our findings comforts the ICN community momentum to improve LFU cache management policy and its approximations. We demonstrate that in-network caching leads to content-wise fair network capacity sharing as long as bandwidth sharing is content-wise fair. Finally, we contribute to the research effort aiming to help ICN Forwarding Information Base scale when confronted to the huge IoT era’s namespace.We propose AFFORD, a novel view on routing in named-data networking that combines machine learning and stochastic forwarding
Mekinda, Mengue Leonce. "Mécanismes de cache, traitement et diffusion de l'information dans les réseaux centrés sur l'information (ICN)." Electronic Thesis or Diss., Paris, ENST, 2016. http://www.theses.fr/2016ENST0075.
Full textThis thesis investigates how making content caching and forwarding latency-aware can improve data delivery performance in Information-Centric Networks (ICN). We introduce a new mechanism that leverages retrieval time observations to decide whether to store an object in a network cache, based on the expected delivery time improvement. We demonstrate that our distributed latency-aware caching mechanism, LAC+, outperforms state of the art proposals and results in a reduction of the content mean delivery time and standard deviation of LRU caches by up to 60%, along with a fast convergence to these figures. In a second phase, we conjointly optimize the caching function and the multipath request forwarding strategies. To this purpose, we introduce the mixed forwarding strategy LB-Perf, directing the most popular content towards the same next hops to foster egress caches convergence, while load-balancing the others. Third, we address ICN fairness to contents. We show that traditional ICN caching, which favors the most popular objects, does not prevent the network from being globally fair, content-wise. The incidence of our findings comforts the ICN community momentum to improve LFU cache management policy and its approximations. We demonstrate that in-network caching leads to content-wise fair network capacity sharing as long as bandwidth sharing is content-wise fair. Finally, we contribute to the research effort aiming to help ICN Forwarding Information Base scale when confronted to the huge IoT era’s namespace.We propose AFFORD, a novel view on routing in named-data networking that combines machine learning and stochastic forwarding
López, Dawn Ricardo José. "Modélisation stochastique et analyse des données pour la diffusion d'information dans les plateformes sociales en ligne." Electronic Thesis or Diss., Sorbonne université, 2023. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2023SORUS036.pdf.
Full textInfluencer marketing has become a thriving industry with a global market value expected to reach 15 billion dollars by 2022. The advertising problem that such agencies face is the following: given a monetary budget find a set of appropriate influencers that can create and publish posts of various types (e.g. text, image, video) for the promotion of a target product. The campaign's objective is to maximize across one or multiple online social platforms some impact metric of interest, e.g. number of impressions, sales (ROI), or audience reach. In this thesis, we create original continuous formulations of the budgeted influence marketing problem by two frameworks, a static and a dynamic one, based on the advertiser's knowledge of the impact metric, and the nature of the advertiser's decisions over a time horizon. The static model is formulated as a convex program, and we further propose an efficient iterative algorithm based on the Frank-Wolfe method, that converges to the global optimum and has low computational complexity. We also suggest a simpler near-optimal rule of thumb, which can perform well in many practical scenarios. Due to the nature of the dynamic model we cannot solve any more a Network Utility Maximisation problem since that the ROI is unknown, possibly noisy, continuous and costly to evaluate for the advertiser. This approach involves exploration and so, we seek to ensure that there is no destructive exploration, and that each sequential decision by the advertiser improves the outcome of the ROI over time. In this approach, we propose a new algorithm and a new implementation, based on the Bayesian optimization framework to solve our budgeted influence marketing problem under sequential advertiser's decisions over a time horizon. Besides, we propose an empirical observation to avoid the curse of dimensionality. We test our static model, algorithm and the heuristic against several alternatives from the optimization literature as well as standard seed selection methods and validate the superior performance of Frank-Wolfe in execution time and memory, as well as its capability to scale well for problems with very large number (millions) of social users. Finally, we evaluate our dynamic model on a real Twitter data trace and we conclude the feasibility of our model and empirical support of our formulated observation
Guinchard, Julia. "Evaluation et valorisation de la communication environnementale et diffusion d’informations dans le document de référence : le cas des entreprises cotées du CAC 40, de 2007 à 2013." Thesis, Paris 10, 2014. http://www.theses.fr/2014PA100124/document.
Full textBy focusing on 38 stock marketed companies from the CAC 40 from 2007 to 2013, to question on the link between environmental published information and market valorization is at stake. The response is organized trough 3 main objectives by performing an explorative analysis: First, one may identify an impact from the disclosure about environmental practices on the stock market thank to the event study methodology. Publication of the annual registration documents hold attention in order to appreciate public environmental communication: Thus, the issue is not to evaluate firms’ policies but to understand how do they behave concerning their communication, by performing a content analysis based on 228 registration documents. Then, one may use an innovative data sources through the Global reporting initiative (GRI) standardized items to explore and to score the published information concerning environmental practices, leading to build an disclosure index. Last, one may test the relationship between the disclosure practices and the impact of this disclosure on the stock market. Companies tend to be more and more transparent according to the GRI, as on the items itself than on their whole practices. When they circulate their registration documents, there are significant cumulated abnormal returns. As a result, one may observe that disclosure on environmental practices explains more the abnormal returns than financial datas, as the leverage variation, even if this effect tend to be less and less important with time
Loctier, Denis. "Редакционный нейтралитет в международном информационном телевещании." Thesis, Lyon 2, 2012. http://www.theses.fr/2012LYO20065/document.
Full textThis work represents an attempt to shed light onto the factors that explain the yearning of the transnational news channels to creating the impression of editorial neutrality in conflict coverage. It also demonstrates the conditionality of this guideline by the internal editorial limitations, as well as by the bias of the audience groups. The privileged position of the author, who has for more than a decade been working as a staff journalist within the international editorial team of Euronews, allowed him to test his hypotheses and findings from within. This dissertation examines the editorial strategies of the major paneuropean and global news channels, putting them in the perspective of historical evolution of transnational broadcasting and analysing the current developments in the context of the globalising world of today. Focusing in particular on the issue of commonly declared neutrality in the channels' editorial policies, the study analyses divergencies in interpreting this basic principle both by the editorial teams and by various audience groups of different broadcasters, creating distinct identities behind the supposedly neutral informational flows. The methods employed in preparing this dissertation include involved observational research of a leading international news channel, the analysis of the perception of news content by viewers ranking among confronting political camps, and reviews of topical Russian and European periodicals and literature
Book chapters on the topic "Diffusion de l’information"
Klein, Anne, and Yvon Lemay. "De la diffusion à l’exploitation :." In Consommer l’information., 159–81. Presses de l'Université Laval, 2018. http://dx.doi.org/10.2307/jj.8500752.13.
Full textKlein, Anne, and Yvon Lemay. "De la diffusion à l’exploitation : changer le point de vue sur les archives." In Consommer l’information., 159–81. Les Presses de l’Université de Laval, 2018. http://dx.doi.org/10.1515/9782763739250-011.
Full textCouture, Marc. "La diffusion et le partage de l’information scientifique." In Propriété intellectuelle et université, 169–200. Presses de l'Université du Québec, 2011. http://dx.doi.org/10.2307/j.ctv18pgtvp.11.
Full textGUÉROIS, Marianne, and Malika MADELIN. "Intégration de données hétérogènes et représentations cartographiques du Géoweb." In Traitements et cartographie de l’information géographique, 47–82. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9161.ch2.
Full textThivent, Viviane. "Le journalisme scientifique face aux nouveaux environnements de diffusion de l’information." In Information et communication scientifique à l'heure du numérique, 139–51. CNRS Éditions, 2014. http://dx.doi.org/10.4000/books.editionscnrs.20041.
Full textDagiral, Éric, and Ashveen Peerbaye. "La construction et la diffusion de l’information sur les maladies rares." In La santé dans l'espace public, 147. Presses de l’EHESP, 2010. http://dx.doi.org/10.3917/ehesp.romey.2010.01.0147.
Full textROCHDI, Sara, and Nadia EL OUESDADI. "Les étudiants et les pratiques numériques informelles: échange et collaboration sur le réseau social Facebook." In Langue(s) en mondialisation, 127–36. Editions des archives contemporaines, 2022. http://dx.doi.org/10.17184/eac.5204.
Full textLabarthe, Hugues. "Diffusion, modélisation et mesure de l’information au temps du Grand Schisme d’Occident (1378-1429)." In Les formes de l'échange, 265–83. Presses universitaires de Rennes, 2012. http://dx.doi.org/10.4000/books.pur.129708.
Full textGeorges, Louis. "L’économie mixte et l’aménagement urbain." In L’économie mixte et l’aménagement urbain, 145–62. Société française d'histoire urbaine, 2024. http://dx.doi.org/10.3917/rhu.068.0145.
Full textPetitjean, Johann. "Processus et procédures de diffusion de l’information sur la guerre turque en Italie (fin XVIe -début XVIIe siècle)." In Les formes de l'échange, 319–34. Presses universitaires de Rennes, 2012. http://dx.doi.org/10.4000/books.pur.129726.
Full textConference papers on the topic "Diffusion de l’information"
Catros, S., M. Fenelon, A. Rui, K. Ross, D. Marcio, B. Angel, M. D. S. Luis, et al. "Création d’un site internet Européen de formation au sevrage tabagique." In 66ème Congrès de la SFCO. Les Ulis, France: EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206603002.
Full textReports on the topic "Diffusion de l’information"
Gruson-Daniel, Célya, and Maya Anderson-González. Étude exploratoire sur la « recherche sur la recherche » : acteurs et approches. Ministère de l'enseignement supérieur et de la recherche, November 2021. http://dx.doi.org/10.52949/24.
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