Teses / dissertações sobre o tema "Plateformes de médias sociaux"
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Oudjani, Louise. "Les médias sociaux comme nouveau support d'information : le cas des plateformes d'hébergement de vidéos en ligne à caractère politique". Electronic Thesis or Diss., Université de Lille (2022-....), 2023. http://www.theses.fr/2023ULILH064.
Texto completo da fonteThis thesis focuses on new digital production practices and the sharing of information online, through current issues related to digital social media. While having as a subject of study the online video hosting platform YouTube, the general objective of this research is to understand how the configuration of digital interfaces online carries this remediation of the amateur social and political discourse, more specifically, how YouTube as a media allows the content management of many politicized contents, in addition to or in competition with traditional news channels. Methodologically, the analysis focuses on the discursive and social practices of Youtube's actors, through the prism of discourse and visual semiotics. The discourse analysis is multiple as the research project tries to define the discourse within the Youtube discussion space, and alongside, the discourse of the content producer, the YouTuber. Indeed, for André Gunthert, the discussion space is a dynamic and evolutionary space, since it depends on the evolution of the content of the video and/or the image. Finally, a third analysis, that of the typology of the participants interviewed during « comprehensive interviews », highlights how audiovisual grammar largely dominates the «sacral» one of writing on social media. All these elements contribute to the definition of the YouTube culture and provide a new perspective on social media in the field of communication studies
Niu, Jing. "An investigation of marketing communication facilitated by social media platforms". Electronic Thesis or Diss., Jouy-en Josas, HEC, 2023. http://www.theses.fr/2023EHEC0009.
Texto completo da fonteThis thesis predominantly delves into what motivates social media users' interactions (the antecedents), what determines patterns of different users' activities (the content), what influences the effectiveness of social media activities (the implementation), and what determines the outcomes of those activities (the consequences)
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.
Texto completo da fonteInfluencer 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
Bouchaud, Paul. "Beyond the Black Box : social structures and dynamics in the digital age : reconstructing, modelling and assessing the impact of major digital infrastructures". Electronic Thesis or Diss., Paris, EHESS, 2024. http://www.theses.fr/2024EHES0162.
Texto completo da fonteThis thesis examines the effects of algorithmic systems used by major online platforms on public discourse and society. Through experimental audits and social simulations, the research aims to decipher how these systems, which serve billions of users, operate. The thesis addresses three main objectives: conducting audits of online platform algorithmic systems, investigating mitigation measures for misalignments between platform operations and public good, and enhancing social media simulations with massive field data. Notable contributions include a comprehensive study of Meta's Ad Library, an analysis of Amazon's and Twitter's recommendation systems, and the creation of a data donation tool to gather information on actual user experiences across platforms like Facebook, Google Search, YouTube, and Twitter.The thesis also considers the methods used in algorithmic auditing, emphasizing the need to account for personalization and individual user traits when evaluating these systems. A simulation of a Twitter-like platform was developed, combining predictive models of user engagement with large-scale data collection. This approach was used to assess how content ranking strategies focused on maximizing engagement affect the information users see, showing reduced content variety and altered political representation. The research concludes by investigating alternative content curation approaches beyond immediate user engagement, including a ranking system based on diverse user approval, while recognizing the difficulties in assessing the "democratic value" of civic content to create viable alternatives to current engagement-based systems
Alimam, Mayla. "The place of enterprise social media platforms in today’s enterprises : evaluation of usage and impact on workplace tools". Thesis, Evry, Institut national des télécommunications, 2017. http://www.theses.fr/2017TELE0007/document.
Texto completo da fonteToday’s organizations are increasingly promoting a shift of employees’ ways of working towards more agility and flexibility. This shift is empowered by new IT tools commonly known as “Enterprise Social Media” (ESM). Taking mainly the form of integrated platforms, these tools are deployed with the promise of enhancing employees’ communicative activities at the workplace while capitalizing on their social connections. Yet, it remains unclear for companies how their employees benefit from the use of these new tools (i.e., ESM platforms). Managers are unable to evaluate the use of these platforms and thus, tangibly measure the success of their investments. Moreover, introducing ESM platforms to the workplace impact the way the existing tools, such as email, are regarded and used. This leads to the question of whether these new platforms may be substitutes for the use of the existing tools. This thesis tackles the mentioned polemical questions about the place of ESM platforms in today’s enterprises. Carried out jointly with Orange labs, the thesis assesses the role ESM platforms could play in supporting organizations in reaching their objectives and hence sustaining their businesses in an extreme competitive context. It explores the real use of these platforms by offering a quantitative social network analysis and data mining of an established ESM platform currently in use. While relying on a proposed research model that characterizes the activity, the applied hypothesis tests allow determining the correct use of ESM platforms, which in turn indicates the success of their deployments. Moreover, the thesis argues through a reasoning approach that the ESM platforms are not capable of substituting the use of existing workplace tools. Instead, they work in tandem with certain tools such as email. Based on the latter argument, the email tagging service is introduced as an example of how existing workplace tools may be enriched with social features to derive increased benefit for the workforce. The thesis finally validates the service through implementation and testing. To conclude, it proposes and discusses scenarios of future social systems that involve the overall set of workplace tools in enterprises
Alimam, Mayla. "The place of enterprise social media platforms in today’s enterprises : evaluation of usage and impact on workplace tools". Electronic Thesis or Diss., Evry, Institut national des télécommunications, 2017. http://www.theses.fr/2017TELE0007.
Texto completo da fonteToday’s organizations are increasingly promoting a shift of employees’ ways of working towards more agility and flexibility. This shift is empowered by new IT tools commonly known as “Enterprise Social Media” (ESM). Taking mainly the form of integrated platforms, these tools are deployed with the promise of enhancing employees’ communicative activities at the workplace while capitalizing on their social connections. Yet, it remains unclear for companies how their employees benefit from the use of these new tools (i.e., ESM platforms). Managers are unable to evaluate the use of these platforms and thus, tangibly measure the success of their investments. Moreover, introducing ESM platforms to the workplace impact the way the existing tools, such as email, are regarded and used. This leads to the question of whether these new platforms may be substitutes for the use of the existing tools. This thesis tackles the mentioned polemical questions about the place of ESM platforms in today’s enterprises. Carried out jointly with Orange labs, the thesis assesses the role ESM platforms could play in supporting organizations in reaching their objectives and hence sustaining their businesses in an extreme competitive context. It explores the real use of these platforms by offering a quantitative social network analysis and data mining of an established ESM platform currently in use. While relying on a proposed research model that characterizes the activity, the applied hypothesis tests allow determining the correct use of ESM platforms, which in turn indicates the success of their deployments. Moreover, the thesis argues through a reasoning approach that the ESM platforms are not capable of substituting the use of existing workplace tools. Instead, they work in tandem with certain tools such as email. Based on the latter argument, the email tagging service is introduced as an example of how existing workplace tools may be enriched with social features to derive increased benefit for the workforce. The thesis finally validates the service through implementation and testing. To conclude, it proposes and discusses scenarios of future social systems that involve the overall set of workplace tools in enterprises
Zhang, Jiekai. "Concurrence et régulation des plateformes médias financées par la publicité". Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEM049/document.
Texto completo da fonteThe first chapter of the thesis studies the advertising competition on the French broadcast TV market. We use a unique dataset on the French broadcast television market including audience, prices, and quantities of advertising of twenty-one TV channels from March 2008 to December 2013. We specify a structural model of oligopoly competition and identify the shape and magnitude of the feedback loop between TV viewers and advertisers. We also implement a simple procedure to identify the conduct of firms on the market. We find that the nature of competition in the French TV advertising market is of the Cournot type. Further, we provide empirical evidence that the price-cost margin is not a good indicator of the market power of firms operating on two-sided markets. In the second chapter, I use a theoretical model to analyze the competitive behavior of advertising financed media platforms. The platforms are specified to be horizontally differentiated and the market form is an oligopoly. The first major insight of the model is that the different platforms behave as strategic complements under Cournot competition. In particular, if a platform increases its quantity of advertising, it is optimal for its competitors to raise their respective advertising quantities as well. The model suggests that the merger of advertising sales houses of several platforms increases the advertising offers of all the competing platforms of the market (both the merged and unmerged), holding the quality of platforms unaffected. I further test the theoretical prediction with TV market data and model used in the first chapter, the empirical counterfactual simulation suggests same results as the theoretical model. Finally, in the last chapter, I investigate the welfare effect of the widespread policy of regulating advertising time on TV. The project exploits a novel dataset of per hour data on 12 broadcast TV channels in France during one year (2014). I first estimate the demand of TV viewers and of advertisers, which allows me to account for the two-sidedness of the market in the supply decision of TV stations. I show in this work how to identify the shadow prices of regulation when the regulatory constraints are observed. Finally, I conduct two counterfactual experiments to calibrate the welfare effects of the regulation. My results suggest that the regulation protects welfare of TV viewers, while its impact on the industry's profit can be either positive or negative, depending on the concentration level of the market. Given the two-sided market structure of the broadcast TV industry, regulating advertising time is unnecessary on a competitive market. However, when the market become concentrated, the regulation can improve up to 5.75% of consumer surplus, but decrease until 4.8% of the industry's profit. (...)
Meloche, Dorris Alexandre. "L'usage des médias sociaux par les relationnistes". Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30488.
Texto completo da fonteBrisset, Maxime. "Médias et stéréotypes sociaux : Représentations de l’otaku japonais". Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/33181.
Texto completo da fonteAbdaoui, Amine. "Fouille des médias sociaux français : expertise et sentiment". Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT249/document.
Texto completo da fonteSocial Media has changed the way we communicate between individuals, within organizations and communities. The availability of these social data opens new opportunities to understand and influence the user behavior. Therefore, Social Media Mining is experiencing a growing interest in various scientific and economic circles. In this thesis, we are specifically interested in the users of these networks whom we try to characterize in two ways: (i) their expertise and their reputations and (ii) the sentiments they express.Conventionally, social data is often mined according to its network structure. However, the textual content of the exchanged messages may reveal additional knowledge that can not be known through the analysis of the structure. Until recently, the majority of work done for the analysis of the textual content was proposed for English. The originality of this thesis is to develop methods and resources based on the textual content of the messages for French Social Media Mining.In the first axis, we initially suggest to predict the user expertise. For this, we used forums that recruit health experts to learn classification models that serve to identify messages posted by experts in any other health forum. We demonstrate that models learned on appropriate forums can be used effectively on other forums. Then, in a second step, we focus on the user reputation in these forums. The idea is to seek expressions of trust and distrust expressed in the textual content of the exchanged messages, to search the recipients of these messages and use this information to deduce users' reputation. We propose a new reputation measure that weighs the score of each response by the reputation of its author. Automatic and manual evaluations have demonstrated the effectiveness of the proposed approach.In the second axis, we focus on the extraction of sentiments (emotions and polarity). For this, we started by building a French lexicon of sentiments and emotions that we call FEEL (French Expanded Emotions Lexicon). This lexicon is built semi-automatically by translating and expanding its English counterpart NRC EmoLex. We then compare FEEL with existing French lexicons from literature on reference benchmarks. The results show that FEEL improves the classification of French texts according to their polarities and emotions. Finally, we propose to evaluate different features, methods and resources for the classification of sentiments in French. The conducted experiments have identified useful features and methods in the classification of sentiments for different types of texts. The learned systems have been particularly efficient on reference benchmarks.Generally, this work opens promising perspectives on various analytical tasks of Social Media Mining including: (i) combining multiple sources in mining Social Media users; (ii) multi-modal Social Media Mining using not just text but also image, videos, location, etc. and (iii) multilingual sentiment analysis
Kyanvar, Mohamed Ali. "Médias et mouvements sociaux en Iran au vingtième siècle". Grenoble 3, 1992. http://www.theses.fr/1992GRE39069.
Texto completo da fonteThis is a historical, political and communicationnal approach to the media in a developing country like iran, in which we have studied the links between the state, the media (press, radio and television) and the working classes. The first chapter consists of theorical analysis of the media in the process of legitimation of the power of the state. The second chapter describes the social, political and economic situation of iran before the first social reforms (the constitutionnal revolution of 1906) and how the people use traditionnal means of communication. The third chapter and fourth, concern the role played by the media in the creation of social movements. Chapters fifth, sixth, seventh deal more particularly with radio and television in iran before, during and after 1979 revolution. The three types of iranian television analyzed in this study are : 1958-68 : private television, 1968-78 : state run television, since 1979 : television on behalf of islam and islamic education
Gervais, Michèle. "Le rôle des médias dans la formation d'enjeux sociaux". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0001/MQ41909.pdf.
Texto completo da fonteBrucelle, Morgane. "Fan culture : résistance et mémétique sur les médias sociaux". Thesis, Montpellier 3, 2018. http://www.theses.fr/2018MON30021/document.
Texto completo da fonteThis dissertation aims at looking at the phenomena of fan resistance on social media through the memetic perspective. The objective is twofold: on one hand, to determine the function held by fans and official meaning-makers in the overall structure of cultural production as to reveal their power dynamics. For that purpose, we shall focus on a specific type of fans, namely television fans who connect around queer matters – whether those matters are broached in American TV contents or not – and who make digital technology part of their rewriting practices as well as their protests against the lack of diversity and authentic representation in current US television shows.On the other hand, adopting the meme's eye view will allow us to contemplate these power dynamics between fans and producers by questioning the mecanisms at play in the formation of each of their functions in the production/reception structure. Memetics understood as a Darwinian theory of cultural evolution shall prove to be an efficient tool for interpreting the creation of groups and group interactions, and thus allow us to conceptualize "fans" and "producers" as superorganisms, social complexes of individuals driven by a common meme. We will, through an analysis of the ways in which LGBTQ television narratives are transmitted, problematize fan resistance to cultural contents as a memetic instance: a battle between superorganisms
Sha, Xiaolan. "Personnalisation du contenu et tendances dans les médias sociaux". Thesis, Paris, ENST, 2013. http://www.theses.fr/2013ENST0026/document.
Texto completo da fonteFluctuating along user connections, some content succeeds at capturing the attention of a large amount of users and suddenly becomes trending. Understanding trending content and its dynamics is crucial to the explanation of opinion spreading, and to the design of social marketing strategies. While previous research has mostly focused on trending content and on the network structure of individuals in social media, this work complements these studies by exploring in depth the human factors behind the generation of this content. We build upon this analysis to investigate new personalization tools helping individuals to discover interesting social media content. This work contributes to the literature on the following aspects: an in depth analysis on individuals who create trending content in social media that uncovers their distinguishing characteristics; a novel means to identify trending content by relying on the ability of special individuals who create them; a mechanism to build a recommender system to personalize trending content; and techniques to improve the quality of recommendations beyond the core theme of accuracy. Our studies underline the vital role of special users in the creation of trending content in social media. Thanks to such special users and their ``wisdom'', individuals may discover the trending content distilled to their tastes. Our work brings insights in two main research directions - trending content in social media and recommender systems
Trad, Riadh. "Découverte d'évènements par contenu visuel dans les médias sociaux". Thesis, Paris, ENST, 2013. http://www.theses.fr/2013ENST0030/document.
Texto completo da fonteThe ease of publishing content on social media sites brings to the Web an ever increasing amount of user generated content captured during, and associated with, real life events. Social media documents shared by users often reflect their personal experience of the event. Hence, an event can be seen as a set of personal and local views, recorded by different users. These event records are likely to exhibit similar facets of the event but also specific aspects. By linking different records of the same event occurrence we can enable rich search and browsing of social media events content. Specifically, linking all the occurrences of the same event would provide a general overview of the event. In this dissertation we present a content-based approach for leveraging the wealth of social media documents available on the Web for event identification and characterization. To match event occurrences in social media, we develop a new visual-based method for retrieving events in huge photocollections, typically in the context of User Generated Content. The main contributions of the thesis are the following : (1) a new visual-based method for retrieving events in photo collections, (2) a scalable and distributed framework for Nearest Neighbors Graph construction for high dimensional data, (3) a collaborative content-based filtering technique for selecting relevant social media documents for a given event
Sha, Xiaolan. "Personnalisation du contenu et tendances dans les médias sociaux". Electronic Thesis or Diss., Paris, ENST, 2013. http://www.theses.fr/2013ENST0026.
Texto completo da fonteFluctuating along user connections, some content succeeds at capturing the attention of a large amount of users and suddenly becomes trending. Understanding trending content and its dynamics is crucial to the explanation of opinion spreading, and to the design of social marketing strategies. While previous research has mostly focused on trending content and on the network structure of individuals in social media, this work complements these studies by exploring in depth the human factors behind the generation of this content. We build upon this analysis to investigate new personalization tools helping individuals to discover interesting social media content. This work contributes to the literature on the following aspects: an in depth analysis on individuals who create trending content in social media that uncovers their distinguishing characteristics; a novel means to identify trending content by relying on the ability of special individuals who create them; a mechanism to build a recommender system to personalize trending content; and techniques to improve the quality of recommendations beyond the core theme of accuracy. Our studies underline the vital role of special users in the creation of trending content in social media. Thanks to such special users and their ``wisdom'', individuals may discover the trending content distilled to their tastes. Our work brings insights in two main research directions - trending content in social media and recommender systems
Trad, Riadh. "Découverte d'évènements par contenu visuel dans les médias sociaux". Electronic Thesis or Diss., Paris, ENST, 2013. http://www.theses.fr/2013ENST0030.
Texto completo da fonteThe ease of publishing content on social media sites brings to the Web an ever increasing amount of user generated content captured during, and associated with, real life events. Social media documents shared by users often reflect their personal experience of the event. Hence, an event can be seen as a set of personal and local views, recorded by different users. These event records are likely to exhibit similar facets of the event but also specific aspects. By linking different records of the same event occurrence we can enable rich search and browsing of social media events content. Specifically, linking all the occurrences of the same event would provide a general overview of the event. In this dissertation we present a content-based approach for leveraging the wealth of social media documents available on the Web for event identification and characterization. To match event occurrences in social media, we develop a new visual-based method for retrieving events in huge photocollections, typically in the context of User Generated Content. The main contributions of the thesis are the following : (1) a new visual-based method for retrieving events in photo collections, (2) a scalable and distributed framework for Nearest Neighbors Graph construction for high dimensional data, (3) a collaborative content-based filtering technique for selecting relevant social media documents for a given event
Merra, Lucile. "Pour une sociologie des médias sociaux : Internet et la révolution médiatique : nouveaux médias et interactions". Thesis, Paris 5, 2013. http://www.theses.fr/2013PA05H024/document.
Texto completo da fonteThis thesis is focused on the analysis of a topic that is still a “work in progress” in Sociology: social media. Although this tautological expression may be amazing at first sight, it appears that no academic definition of social media has been proposed to date. This gap in academic research illustrates that this topic is both recent and complex. Therefore, our research aims to conduct a contextual analysis of the emergence of a new media. This research is based on an empirical approach through the study of uses, practices and representations of social media users. As social media are characterized by the interactionist dimension, our research will target active users. From these connected and networked people to active audiences, our analysis will focus on new ways related to involvement. Our research will contribute to the sociological understanding of a social, cultural and media topic that represents social media as well as the set up of social movements supported by social media
Quiroga, Cortes Catherine. "La fabrique de l'information locale à l'aune des plateformes socio-numériques". Electronic Thesis or Diss., Université de Toulouse (2023-....), 2024. http://www.theses.fr/2024TLSES001.
Texto completo da fonteThis thesis focuses on the production process of journalistic information on a local scale and in the light of socio-media platforms. The production of journalistic information is considered here as a socio-discursive practice that can be invested by actors located beyond the professional journalistic group. This work questions the methods of intervention of socio-digital networks in the 'local information factory' and their impact on the relational dynamics which drive it. In order to open the black box of local information making, we rely on the analysis of controversies. Since they unfold in a territorial context, controversies offer researchers a more or less well-defined spatio-temporal framework. We thus construct a hybrid methodological approach inspired by the mapping of controversies and carry out a comparative study of two controversies deployed around land development projects: an offshore wind farm and the construction of an Amazon logistics center. The hybridity of the approach concerns both the collection of empirical data (30 semi-structured interviews, nearly 1500 press articles, more than 5000 tweets and Facebook publications, observations carried out offline and online, collection of documentation) and the analytical methods (inductive thematic coding, textometric analysis, reconstruction of the trajectory of controversies). Our study demonstrates that Facebook generalizes access to the production of local information to the extent that it empowers users to exercise practices that are part of the process of producing and circulating information. However, our work also highlights the significant constraints that weigh on users who invest in social-media arenas, often unknown or poorly understood by many. The plurality of investment modalities of said platforms highlights significant disparities between the actors involved in the controversies studied and in their possibilities of dominating the narrative on the events, facts or issues surounding the controversies. Finally, our study highlights the centrality of regional and local media in the 'local information factory'. If the latter are still heavily dependent on social-media platforms for the distribution of their editorial content, they preserve a symbolic legitimacy with a large audience in their publishing territories
Perreault, Marie-Catherine. "L’engagement des consommateurs envers une marque via les médias sociaux". Mémoire, Université de Sherbrooke, 2017. http://hdl.handle.net/11143/11598.
Texto completo da fonteGuille, Adrien. "Diffusion de l’information dans les médias sociaux : modélisation et analyse". Thesis, Lyon 2, 2014. http://www.theses.fr/2014LYO22015/document.
Texto completo da fonteSocial 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
Fraisier-Vannier, Ophélie. "Détection de points de vue sur les médias sociaux numériques". Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30200.
Texto completo da fonteNumerous domains have interests in studying the viewpoints expressed online, be it for marketing, cybersecurity, or research purposes with the rise of computational social sciences. We propose in this manuscript two contributions to the field of stance detection, focused around the difficulty of obtaining annotated data of quality on social medias. Our first contribution is a large and complex dataset of 22853 Twitter profiles active during the French presidential campaign of 2017. This is one of the rare datasets that considers a non-binary stance classification and, to our knowledge, the first one with a large number of profiles, and the first one proposing overlapping political communities. This dataset can be used as-is to study the campaign mechanisms on Twitter, or used to test stance detection models or network analysis tools. We then propose two semi-supervised generic stance detection models using a handful of seed profiles for which we know the stance to classify the rest of the profiles by exploiting various proximities. Indeed, current stance detection models are usually grounded on the specificities of some social platforms, which is unfortunate since it does not allow the integration of the multitude of available signals. By infering proximities from differents types of elements available on social medias, we can detect profiles close enough to assume they share a similar stance on a given subject. Our first model is a sequential ensemble algorithm which propagates stances thanks to a multi-layer graph representing proximities between profiles. Using datasets from two platforms, we show that, by combining several types of proximities, we can achieve excellent results. Our second model allows us to observe the evolution of profiles' stances during an event with as little as one seed profile by stance. This model confirms that a large majority of profiles do not change their stance on social medias, or do not express their change of heart
Ferrari, Giovannipaolo. "Au delà des professions ? Le travail à l'époque des médias sociaux". Thesis, Montpellier 3, 2016. http://www.theses.fr/2016MON30009.
Texto completo da fonteThis thesis concerns, firstly, change in workers professional practices of a teamwork of an American high-tech corporation, pushed by ICT. During the research, we tried to develop a dynamic and practical description of the daily life of workers observed in “technologically dense environments” (Bruni 2005; Bruni & Gherardi 2007), who live habitually during their work activities. The “narrative” of these working environments has fostered understanding the operation of the “technological infrastructure” (Gherardi 2007) of the team in charge of managing the presence of that multinational on social media. So we observed that this technological infrastructure is completely different from those observed in the 90s of XX century by many scholars (Joseph 1994; Heath e Luff 1992; Suchman 1997; 2000; Star 1999; Grosjean 2004). This difference translates almost in an anthropological and social change which is evident in the way they work and represent themselves at work
Balalau, Oana. "Recherche de sous-graphes denses et d'événements dans les médias sociaux". Electronic Thesis or Diss., Paris, ENST, 2017. http://www.theses.fr/2017ENST0020.
Texto completo da fonteEvent detection in social media is the task of finding mentions of real-world events in collections of posts. The motivation behind our work is two-folded: first, finding events that are not covered by mainstream media and second, studying the interest that users show for certain types of events. In order to solve our problem, we start from a graph based characterization of the data in which nodes represent words and edges count word co-occurrences. Density is a very good measure of importance and cohesiveness in graphs. Taking into account the special properties of real-word networks, we can develop algorithms that efficiently solve hard problems. The contributions of this thesis are: devising efficient algorithms for computing different types of dense subgraphs in real-world graphs, presenting a novel dense subgraph definition and providing an efficient graph-based algorithm for event detection
Merrick, LukeAndrew. "Les Médias sociaux dans la classe de FLE: une (r)évolution pédagogique ?" Thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/22634.
Texto completo da fonteGadek, Guillaume. "Détection d'opinions, d'acteurs-clés et de communautés thématiques dans les médias sociaux". Thesis, Normandie, 2018. http://www.theses.fr/2018NORMIR18/document.
Texto completo da fonteOnline Social Networks have taken a huge place in the informational space and are often used for advertising, e-reputation, propaganda, or even manipulation, either by individuals, companies or states. The amount of information makes difficult the human exploitation, while the need for social network analysis remains unsatisfied: trends must be extracted from the posted messages, the user behaviours must be characterised, and the social structure must be identified. To tackle this problem, we propose a system providing analysis tools on three levels. First, the message analysis aims to determine the opinions they bear. Then, the characterisation and evaluation of user accounts is performed thanks to the union of a behavioural profiling method, the study of node importance and position in social graphs and engagement and influence measures. Finally the step of user community detection and evaluation is accomplished. For this last challenge, we introduce thematic cohesion scores, completing the topological, graph-based measures for group quality. This system is then applied on two corpora, extracted from two different online social media. The first is constituted of messages published on Twitter, gathering every activity performed by a set of 5,000 accounts on a long period. The second stems from a ToR-based social network, named Galaxy2, and includes every public action performed on the platform during its uptime. We evaluate the relevance of our system on these two datasets, showing the complementarity of user account characterisation tools (influence, behaviour and role), and user account communities (interaction strength, thematic cohesion), enriching the social graph exploitation with textual content elements
Savage, Renaud. "L’utilisation de Facebook par la police : l’image de l’efficacité policière à l’ère des sites de réseautage". Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34867.
Texto completo da fonteCarayre, Guillaume. "Les relations juridiques entre les territoires décentralisés et les moyens de communications immatérielles". Toulouse 1, 2007. http://www.theses.fr/2007TOU10034.
Texto completo da fonteGirard, Aurélie. "L'intégration des médias sociaux dans les stratégies d'e-GRH : le cas du recrutement". Thesis, Montpellier 2, 2012. http://www.theses.fr/2012MON20158/document.
Texto completo da fonteThis work addresses the issue of the integration of social media in recruitment strategies of organizations. Although the number of recruiters using websites like Facebook, Twitter, Linkedin or Viadeo is constantly growing, both theoretical and practical knowledge of these innovative usages remains limited. In order to better understand these usages and build an appropriate analytical framework, two complementary theoretical fields were mobilized, social capital theory and improvisational theory. Following a preliminary study to refine the initial questioning, four case studies were conducted among two recruitment agencies and two companies that have implemented innovative strategies. Finally, to validate a part of the results and add a prospective vision, a Delphi study was then carried out on a panel of 34 experts.These different studies reveal two main practices developed by organizations: employer brand management and operational recruitment. Social media appear not to be similar but complementary with the previous means of recruitment. They allow organizations to adapt to new applicant behaviors and develop their relational capital. However, their mere usage is not always synonymous with relational approach. In addition, the valuation of tinkering and improvisation proves pertinent to better integrate social media in recruitment strategies. Their integration modifies the place and role of HR professionals in terms of skills, responsibilities and strategic importance. However, this study highlights different challenges to overcome
Debaveye, Julie. "@clacmontréal : émergence et institutionnalisation d'une expertise militante dans les micro-médias". Doctoral thesis, Université Laval, 2013. http://hdl.handle.net/20.500.11794/23980.
Texto completo da fonteThis doctoral thesis provides an examination of the emergence and the institutionalization of an activist expertise on Twitter by the CLAC (Convergence des Luttes Anticapitalistes) and an investigation of the group social and intertextual processing with alternative and global media during the G20 in Toronto (2010) and the Quebecer Student strike (2012). Mixed methods and online exploration are used to build a transformative integrative multidimensional methodology for analysing web hypertextual practices. This research strategy allows for the observation, analysis and interpretation of peer groups mediated practices and enables to formulate research recommendations for methodologies exploring the complexity of new media convergence (Castells, 1998, 1999, 2001; Jenkins, 2006) and the formation of ad hoc publics during political crisis (Bruns, 2007 ; Bruns et al., 2010). Under the theoretical and conceptual position of expertise, activism and hypertext, specific forms of activist communication in micro-media, influence and power dynamics in local public sphere and new modes of contagion of local information on public deliberation main themes and practices (Habermas, 1978, 1987) will be explored. Finally, advantages and limits of the mixed methods approach and directions for future research are discussed.
Lupovici, Raphaël. "La critique des médias par les Gilets jaunes. Étude des appuis sociaux et numériques de la contestation politique". Electronic Thesis or Diss., Paris 3, 2023. http://www.theses.fr/2023PA030114.
Texto completo da fonteFrom its outset in November 2018, the Yellow Vests Movement (YVM) has stood out for its fierce criticism of the mainstream media, most notably through its engagement on social media platforms. This thesis investigates the driving forces behind this denunciation. It draws on combined fieldworks, involving the analysis of screenshots taken from the YV’s Facebook spaces (n = 316), as well as semi-structured interviews conducted among the movement’s participants (n = 38), and results from a 2019 survey administered via the Pluralisme de l’information en ligne (PIL) research project. The study of this empirical data seeks to identify the social organizing principles of the YV’s media criticism. It combines a dispositionalist examination of the respondents’ individual experiences with a discussion of the online development of a shared critical culture, specific to the protest. The YV’s media criticism thus appears to be the product of a mobilization of demonstrators with varying degrees of inclination towards critical discourse. As the activist experience of the YV regularly found itself at odds with the media coverage of the movement, it prompted the online expression of an anger aggregated by platforms, and gradually formed a common culture of protest. This media criticism eventually took root in the daily lives of the YV, resulting in a reconfiguration of their media practices, thus sustaining a denunciation that became a structural feature of the protest
Dubé, Lisa. "Étude de l'utilisation des médias sociaux au sein d'organisations syndicales du milieu de l'éducation". Master's thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/34738.
Texto completo da fonteOver the years, several solutions were put forward in order to slow the decline of the unionization rate and to revitalize trade unions. One of these solutions is the use of information and communication technologies such as the Internet, websites and social media. Trade unions are increasingly adopting social media to communicate and engage with their members and the public, but are they using them adequately and are they fully exploiting their growing popularity? To answer these questions and to gain a comprehensive and nuanced understanding of the phenomenon, we looked at how ten unions in the field of education use social media and we tried to identify its positive impacts on certain aspects of the union life as well as the related constraints and risks. The aspects we chose to focus on are the mobilization and the participation of members and, in a subsidiary way, the recruitment of new members and the acquisition of public support. We therefore conducted semi-directed interviews with people managing social media from ten different Quebec unions. Our exploratory study highlights the significant potential of social media in mobilizing members, but also a great untapped potential regarding the way they are used. -- Keywords: social media, Web 2.0, union renewal, mobilization, participation
Résumé en espagnol
Batard, Robin. "Intégrer les contributions citoyennes aux dispositifs de gestion de crise : l'apport des médias sociaux". Electronic Thesis or Diss., Institut polytechnique de Paris, 2021. http://www.theses.fr/2021IPPAT019.
Texto completo da fonteThe management of civil security crises is the responsibility of a set of institutions and professional actors. However, the growing use of social media asserts the major role played by citizens in its implementation.From an interdisciplinary approach (information and communication sciences, computer sciences), our work proposes to study the integration of citizens’ contributions to crisis management systems, especially via social media. This research contributes to the field of crisis informatics. It is presented according to four thematic axes: i) the use of social media by citizen communities in crisis situations, ii) the practices of professional actors regarding the integration of citizen contributions, iii) the opportunities to reinforce interactions between professionals and citizens in crisis management, and iv) the integration of citizen initiatives within a software tool to orchestrate the response.First, our work presents how citizens appropriate social media functionalities to meet specific needs in crisis situations. We reconsider the notion of volunteerism in crisis management and map the diversity of citizen contributions that can be perceived via social media.Secondly, we study how the practices of the actors of French departmental fire and rescue services (SDIS) integrate this emergence of citizen contributions. Although we note a certain maturity in the use of social media in crisis management units, we observe certain reticence that hinders their adoption. When it comes to integrating citizen initiatives into response operations, SDIS professionals are generally reluctant to involve citizens in their rescue missions. However, the local level seems more appropriate for the involvement of volunteers.Thirdly, our research presents areas of work and reflection to support the civil security institutions in a better integration of citizens’ contributions. It brings theoretical considerations on the collaborative aspects of interactions between professionals and citizens.Fourthly, our work proposes to model the concept of citizen initiative, and to set up orchestration modes for their integration within the R-IO Suite software. Through a case study implemented in the software, we demonstrate the possibilities for a crisis management unit to lead a crisis response involving both professional and citizen actors
Mousavi, Baygi Seyed Reza. "Three essays on the material enactment of social movements through social media". Thesis, Cergy-Pontoise, Ecole supérieure des sciences économiques et commerciales, 2019. http://www.theses.fr/2019ESEC0001.
Texto completo da fonteIn line with recent interest in social movements in OT and IS literatures and vis-à-vis the increasing digitalization of societies, in this dissertation I study the material enactment of social movements with, through, and by social media. In so doing, instead of separating social media and social movements to study their interactions—a maneuver that forecloses investigation into the situated constitution of both—I adopt a posthumanist performative perspective and shift my analytical gaze on the everyday actions and practices entailed in social media activism. This dissertation contributes to both OT and IS literatures. Specifically, in each essay I develop a practice-based material-discursive understanding of the subject matter that is useful in engaging, investigating, and making sense of phenomena entailed in social media organizing and their consequences. The novelty and relevance for the OT literature comes from attending to the constitutive role of materiality in organizing processes, while, an additional novelty and relevance for the IS literature comes from attending to issues of contestation, politics, and collective agency vis-à-vis social media. Finally, I make a distinctive contribution by attending to the understudied context of right-wing movements
Asdourian, Bruno. "COMMUNICATION RELATION ET MÉDIAS SOCIAUX Étude du cas de la sensibilisation aux feux de forêt". Phd thesis, Université de la Méditerranée - Aix-Marseille II, 2010. http://tel.archives-ouvertes.fr/tel-00573962.
Texto completo da fonteAsdourian, Bruno. "Communication relation et médias sociaux : étude du cas de la sensibilisation aux feux de forêt". Electronic Thesis or Diss., Aix-Marseille 2, 2010. http://www.theses.fr/2010AIX22300.
Texto completo da fonteSocial media are based on the principle of the multiplicity of connections and are used for their capacity to find and to exchange with many partners who answer the specific needs of each individual, each company or each institution. An organization can reach a user from the social network of a member of its own social network. We have analyzed the new forms of on line communication and especially their impact in terms of information diffusion and communication. In a first part, “Internet Communication: communicating through arguments and through emotions and the role of confidence in co-building knowledge”, we explain how the text and the context have an impact on the involvement of the Internet users and we expose why confidence is a key element of the relation in order to build some common knowledge for the users and the organization. In a second part, “Communication relation in on line social media: between utopia and reality. Research and applications for a wildfire awareness strategy”, we develop the concept of a “communication relation” with three main characteristics: individualized communication, social communication and transparent communication. The approach in terms of “communication relation” has been applied to a large-scale European research project, the Fire Paradox project (Sixth Framework Program 2006-2010) concerning social media. We propose a first evaluation of the comparative interest of various social media. The results from the observation of the Internet users participation and from the on-line surveys allow to indicate the contributions and the limits of social media particularly for developing public awareness in a general interest cause
El, Majoudi Sanae. "Le rôle des sources interpersonnelles d'information en ligne : le cas des « influenceurs des médias sociaux »". Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCG004.
Texto completo da fonteThe advancement of information and communication technologies, especially on the internet, has created an optimal environment for interpersonal interactions and electronic word-of-mouth. Now, consumers are not only influenced by their traditional offline networks but also by a multitude of internet users who share their opinions on products and brands. Identifying the different online interpersonal information sources, capable of impacting internet users, has thus become a critical focus for businesses. Particularly, identifying « social media influencers », highly coveted in influencer marketing (Leung et al., 2022). Indeed, advertising collaborations between brands and « social media influencers » (SMI), have become widespread practices. Brands resort to these individuals to endorse their products in exchange for compensation. However, internet users are increasingly cautious of this type of recommendations, considered not credible due to vested interests. In this case, these communication strategies may have adverse effects on consumer attitudes and behaviors. This study aims to comprehend internet users responses to brand-SMI advertising partnerships by identifying factors that can enhance their effectiveness and the mechanism by which this occurs. To achieve this, and after a review of existing literature, two studies were conducted. Firstly, an exploratory qualitative study involving 22 internet users shed light on user skepticism towards this form of communication and explored factors influencing its effectiveness. Subsequently, a second experimental study involving 868 internet users was conducted to test these findings. This doctoral research thus presents numerous theoretical and managerial contributions. Primarily, factors have been identified as potentially influencing the behavioral responses of internet users towards these communications. These variables are regarded as antecedents to the source « SMI » credibility, which functions as the central mechanism through which their influence occurs
Liu, Xueliang. "Fouille d'informations multimédia partagées orienté événements". Electronic Thesis or Diss., Paris, ENST, 2012. http://www.theses.fr/2012ENST0071.
Texto completo da fonteThe exponential growth of social media data requires scalable, effective and robust technologies to manage and index them. Event is one of the most important cues to recall people’s past memory. With the development of Web 2.0, many event-based information sharing sites are appearing online, and a wide variety of events are scheduled and described by several social online services. The study of the relation between social media and events could leverage the event domain knowledge and ontologies to formulate the raised problems, and it could also exploit multimodal features to mine the patterns deeply, hence gain better performance compared with some other methods. In this thesis, we study the problem of mining relations between events and social media data. There are mainly three problems that are well investigated. The first problem is event enrichment, in which we investigate how to leverage the social media to events illustration. The second problem is event discovery, which focuses on discovering event patterns from social media stream. We propose burst detection and topic model based methods to find events from the spatial and temporal labeled social media. The third problem is visual event modeling, which studies the problem of automatically collecting training samples to model the visualization of events. The solution of collecting both of the positive and negative samples is also derived from the analysis of social media context. Thanks to the approaches proposed in this thesis, the intrinsic relationship between social media and events are deeply investigated, which provides a way to explore and organize online medias effectively
Karoui, Myriam. "Visibilité du capital social à travers les médias sociaux : Etudes de cas sur les dynamiques sociales de l'appropriation d'un outil d'Analyse de Réseaux Sociaux". Phd thesis, Ecole Centrale Paris, 2012. http://tel.archives-ouvertes.fr/tel-00905525.
Texto completo da fonteGrossetti, Quentin. "Système de recommandation sur les plateformes de micro-blogging et bulles filtrantes". Electronic Thesis or Diss., Sorbonne université, 2018. http://www.theses.fr/2018SORUS304.
Texto completo da fonteWith the unprecedented growth of user-generated content produced on microblogging platforms, finding interesting content for a given user has become a major issue. However due to the intrinsic properties of microblogging systems, such as the volumetry, the short lifetime of posts and the sparsity of interactions between users and content, recommender systems cannot rely on traditional methods, such as collaborative filtering matrix factorization. After a thorough study of a large Twitter dataset, we present a propagation model which relies on homophily to propose post recommendations. Our approach relies on the construction of a similarity graph based on retweet behaviors on top of the Twitter graph. We then conduct experiments on our real dataset to demonstrate the quality and scalability of our method. Finally, we investigate community detection algorithms and we present a metric to compute the strength of the filter bubble. Our results show that filter bubble effects are in fact limited for a majority of users. We find that, counter-intuitively, in most cases recommender systems tend to open users perspectives. However, for some specific users, the bubble effect is noticeable and we propose a model relying on communities to provide a list of recommendations closer to the user’s usage of the platform
Altourah, Albaraa. "Hiérarchisation de l'information et "agenda setting" sur Twitter : étude comparée entre la France et le Koweit". Thesis, Lille 3, 2018. http://www.theses.fr/2018LIL3H008/document.
Texto completo da fonteThis doctoral thesis explores the validity of the agenda setting theory in the social media platform of Twitter. The theory has shown how the mass media prioritize information using the "issue salience" to try to influence public opinion. This thesis seeks to determine whether this theory, conceived in an era prior to the advent of digital media, can be applied to Twitter, which is both a mass media source and a selective news media source.This research is conducted in the field of political communication. Two studies have examined the accounts of political personalities and mass media sources present on Twitter in two Twitterspheres, France and Kuwait, during a selected period of the year 2016, corresponding for France to the primaries that preceded the presidential elections. A survey of users of these Twitterspheres completes this analysis.The results showed under what conditions an effect of "agenda setting" can form and create conversations beyond the "filtration bubble" that commands the selective exposure to information
Lacoste, Karine. "Interprétation et implantation de l’innovation au sein de la Société Radio-Canada". Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31728.
Texto completo da fonteRouch, Jean-Pierre. "Instants d'images : approches sociologiques de l'image, du temps et des rythmes sociaux". Toulouse 2, 1996. http://www.theses.fr/1996TOU20012.
Texto completo da fonteThis reserarch questions the connection between media and society throu through the way a new social and global time appears and is socially constructed, breaking with the dominance of modern time. With this aim in view, the thesis chooses to observe two different times located in two different levels of the society. The first part observes and characterizes the temporal system of tv frames, then exends it to zapping, regarded as its practical application. The second part describes individual systems of actions and representations of time, through several atypical occupations and timetables. This double study allows to draw from it a structural homology between the two kinds of time. It permits to describe the emergence of common modes of time. Of a common structural principle (the centrality of the subject who articulates the multiplicity of times) and a common dynamic principle (the delinearisation of temporalities) finally, the homology allows to extend these observations to the appearance of a new social global time that includes time of media and everyday social time
Charmarkeh, Houssein. "Pratiques médiatiques, usages des médias sociaux et trajectoires migratoires des Somaliens en France et au Canada". Thesis, Paris 3, 2013. http://www.theses.fr/2013PA030099.
Texto completo da fonteTechnologies are omnipresent in our society, from social media, to satellite television and Internet broadcasting and shape the way we live, work, and interact. It has also transformed the international migration, making it possible for migrants to maintain strong ties between their host society and country of origin. Many studies have been conducted on the usage of ICT by migrants in the host country; however, there is limited research on the use of ICT by refugees during their migratory paths. This study focuses on the analysis of media practices and uses of social media by Somali refugees from Somalia to France (Rennes, Angers and Paris). In addition, this field survey is multi-sited and covers the relationship between the media practices and identity reconstruction of Somalis in two Canadian cities, Ottawa and Toronto. Despite the emergence of studies on the Canadian Somali community, very little research exists on the analysis of media practices Somalis, particularly in the domestic context. The methodological approach used in this study is based on an epistemological posture via the tools of critical ethnography and multi-sited. Critical ethnography aims to address the social and economic inequalities in which Somalis live in France and Canada. The results of this research show that the refugees, who are often labelled as being under-equipped with limited knowledge of computers, know how to use social media (Facebook, Youtube) and instant communication tools (Skype, MSN Messenger,VoIP) and information technologies and communication. We will also see how the collective use of YouTube videos, television and radio by Somalis in Canada and France has a complementary role to that of the institutions responsible for safeguarding the memory and transmission of cultural identity. The production and reception of video, radio and television broadcasts of the Somali community symbolize "traces" or efforts to rebuild Somalia. Through detailed analysis of media practices in the context of migration, this study seeks to contribute to the advancement of knowledge on the use of ICT by Somali refugees
Verville, Mélanie. "Usages politiques des médias sociaux et du WEB 2.0 - Le cas des partis politiques provinciaux québécois". Thesis, Université Laval, 2012. http://www.theses.ulaval.ca/2012/29467/29467.pdf.
Texto completo da fonteLyonnais, Marie-Claude. "Les médias sociaux dans le cadre d'une recherche participative en santé auprès des Inuit du Nunavik". Master's thesis, Université Laval, 2017. http://hdl.handle.net/20.500.11794/27816.
Texto completo da fonteThis exploratory study aims to provide information about the use of social media as part of a communication strategy within an Inuit community-based participatory health research (CBPR). Thirty semi-structured interviews conducted with Nunavimmiut (Inuit from Nunavik), as well as the content of six Facebook groups and two Facebook pages, were the subject of a thematic analysis. The goal was to better understand the use of social media by Nunavimmiut, and the best methods to improve communication within an Inuit CBPR. The results show that social media, especially Facebook, is an effective tool to reach and involve local people in the research process, but needs to be included in a broader strategy including traditional media. Researchers also need to culturally adapt their use of social media by respecting the social and cultural norms of Inuit to communicate successfully and generate more locally valuable research results. Key words: Inuit, Nunavik, social media, community-based participatory research, health, cross-cultural communication, cross-cultural adaptation
Uratnik, Miha. "Le rôle des médias sociaux dans la co-création des utilisateurs et dans l'innovation de service". Thesis, Lille 1, 2015. http://www.theses.fr/2015LIL12011/document.
Texto completo da fonteThe pervasive availability of social media is changing how organizations interact with the user in service innovation. However, the explanation how to leverage the co-production and co-creation relationship in interactional service innovation with the social media user is missing. The integration of such interactions reveals a system of knowledge production and dissemination. The system unfolds a configuration of hypothetical interactions, namely the gap between the social media and service innovation networks across different sectors is narrowed with the interactional model and social media user in co-production and co-creation. The emphasis is on how organizations leverage the non-technological innovation and complex meta-change with social media in different environments. The research involves the exploratory sequential research; qualitative leading to the quantitative methodology. In qualitative research five companies were investigated during a long-term span. A particular qualitative methodology was used for the validation of the interactional model. However, the results lead to the quantitative validation and testing of hypotheses as theorized in the qualitative step. Companies leverage social media user for interactional service innovation with different specifics and co-produce or co-create value. The findings are hypothesized on a larger sample to confirm/refute different hypotheses. Although social media seem significant for co-creation, the findings do not follow suit. Companies do not employ the possibilities of co-creation with social media; they rather co-produce value with scarce unique interactions with social media users across different sectors
Lee, Sang-Gil. "Médias et expérience de l'espace public : étude sur les usages sociaux du vidéotex résidentiel en France". Paris 5, 1999. http://www.theses.fr/1999PA05H043.
Texto completo da fonteNarcisse, Nicolas. "L'entreprise face au tribunal de l'opinion : modélisation des débats sociaux impliquant les entreprises". Paris 4, 2002. http://www.theses.fr/2002PA040187.
Texto completo da fonteMarchal, Bruno. "La médiation informationnelle au travers de plateformes de réseaux sociaux : l'application de Facebook lors de l'apprentissage du français langue étrangère en Thaïlande". Thesis, Normandie, 2018. http://www.theses.fr/2018NORMR116/document.
Texto completo da fonteThe subject of this research concerns the interactive and reticulated pattern platforms that now populate our daily lives, and which first appear to us in the form of technical objects, but whose uses build social representations. We studied Informational mediations developed there by focusing on French in the context of its Thai students at the University, since French is a language deemed difficult, unrelated and distant. A double quantitative and qualitative analysis conducted in part with the NVivo software allowed us to update the fact that, in certain aspects and in certain environments, a digital social network like Facebook could facilitate informal apprenticeship participating in an economy of knowledge. We have identified specific uses and practices that are not those of a distance education platform designed as such. Thus, a certain creativity would be exercised in the construction of scripted audio-visual documents on mediating and multiplatform technical operational systems where the autonomy of the user would be culturally and socially situated according to identities, group memberships, perceptions, habits and other factors that structure its relationship to the world and will condition its desire, its manner and its practical ability to appropriate elements of language learning