En quoi les business models circulaires, fondés sur des activités de réutilisation et de recyclage organisées collectivement, permettent-ils aux entreprises de créer et capter de la valeur de manière pérenne ? Cette question, au cœur des préoccupations des entreprises et des décideurs publics, demeure émergente en stratégie. Afin d’y répondre, ce manuscrit rapporte cinq cas d’intervention sur de tels business models opérés par le constructeur Renault, dont l’analyse est resituée dans le cadre plus large des évolutions qu’a connu la fin de vie automobile ces dernières décennies. Au terme de ce travail, nous proposons une analyse fine de l’émergence et de la montée en puissance de BM circulaires pérennes dans des entreprises établies en tant que processus instrumenté d’action collective. Nous montrons ainsi que la concrétisation de leurs potentiels de valeur se fonde sur une activité collective méconnue – l’ingénierie de filière – qui vise à structurer de nouveaux marchés, réseaux et chaînes de valeur. / To what extent can reuse and recycling circular business models create and capture value in the long run? This question, which constitutes a major concern for firms and public actors, remains understudied in Strategy. In order to answer this question, this thesis highlights five cases of collaborative research on such business models conducted within the car manufacturer Renault, which are put into perspective within the larger context of the evolution automotive end-of-life experienced over last decades. At the end of this study, we propose a close analysis of circular business models emergence and up-scaling, which we picture as an instrumented collective action process. Thus, we show that the concretization of their value potentials rests upon a collective activity, we call industry engineering, which aims at structuring new value chains and value networks.

De plus en plus d’organisations scientifiques contemporaines intègrent dans leur processus des foules de participants assignés à des tâches variées, souvent appelés projets de science citoyenne. Ces foules sont une opportunité dans un contexte lié à une avalanche de données massives qui met les structures scientifiques face à leurs limites en terme de ressources et en capacités. Mais ces nouvelles formes de coopération sont déstabilisées par leur nature même dès lors que les tâches déléguées à la foule demandent une certaine inventivité - résoudre des problèmes, formuler des hypothèses scientifiques - et que ces projets sont amenés à être répétés dans l’organisation. A partir de deux études expérimentales basées sur une modélisation originale, cette thèse étudie les mécanismes gestionnaires à mettre en place pour assurer la performance des projets délégués à la foule. Nous montrons que la performance est liée à la gestion de deux types de capitalisation : une capitalisation croisée (chaque participant peut réutiliser les travaux des autres participants) ; une capitalisation séquentielle (capitalisation par les participants puis par les organisateurs). Par ailleurs cette recherche met en avant la figure d’une nouvelle figure managériale pour supporter la capitalisation, le « gestionnaire des foules inventives », indispensable pour le succès des projets. / A growing number of contemporary scientific organizations collaborate with crowds for diverse tasks of the scientific process. These collaborations are often designed as citizen science projects. The collaboration is an opportunity for scientific structures in a context of massive data deluge which lead organizations to face limits in terms of resources and capabilities. However, in such new forms of cooperation a major crisis is caused when tasks delegated to the crowd require a certain inventiveness - solving problems, formulating scientific hypotheses - and when these projects have to be repeated in the organization. From two experimental studies based on an original modeling, this thesis studies the management mechanisms needed to ensure the performance of projects delegated to the crowd. We show that the performance is linked to the management of two types of capitalization: a cross-capitalization (each participant can reuse the work of the other participants); a sequential capitalization (capitalization by the participants then by the organizers). In addition, this research highlights the figure of a new managerial figure to support the capitalization, the "manager of inventive crowds", essential for the success of the projects.

The research problem that this study sought to address stemmed from a lack of knowledge about South African organizations and a dearth of empirical, quantitative research into organizations, organization structure and organization climate in this country. Five research hypotheses were formulated to address this problem and its attendant subpriJblems. A comprehensive review of the related literature and research was c~trried out and Organization Theory was traced to its earliest beginnings. A number of schools hased on Max Weber's bureaucratic ideal type were described and contrasted. Much attention was paid to the work of the Aston group m the United Kingdom and to their efforts to operationalize Weberian concepts and to incorporate them into a replicable body of quantitative research. Points of departure were re-examined and some new twists to Systems Theory and Structural Functionalism were considered. It was established that the demographic characteristics of both the sample and the population were similar enough for the results of this study to be generalised to the population with some degree of confidence. Much care was taken to test and validate each of the scales that comprised the questionnaire, and item analyses and factor analyses were carried out for every variable and group of variables. The measures developed in other parts of the world and by other researchers performed very well in a South African setting - as did the measures developed specifically for this study. Statistical associations and causal relationships between the various sets of variables, both at the sector level and at individual industry subgroup level, were sought by means of multiple regression analyses. Broad support was found for a 'culture-free hypothesis' that there are a number of stable relationships between organizations and their context; and these relationships will be constant in direction and strength regardless of differences in structures, or in contexts of structures between societies. Importantly, there were also a number of significant differences between this study and the findings of other studies which reflected South Africa's unique blend of developed and developing cultures and value systems. These differences provide fertile ground for future research in the field of Organization Theory. / Business Management / DBL

The research problem that this study sought to address stemmed from a lack of knowledge about South African organizations and a dearth of empirical, quantitative research into organizations, organization structure and organization climate in this country. Five research hypotheses were formulated to address this problem and its attendant subpriJblems. A comprehensive review of the related literature and research was c~trried out and Organization Theory was traced to its earliest beginnings. A number of schools hased on Max Weber's bureaucratic ideal type were described and contrasted. Much attention was paid to the work of the Aston group m the United Kingdom and to their efforts to operationalize Weberian concepts and to incorporate them into a replicable body of quantitative research. Points of departure were re-examined and some new twists to Systems Theory and Structural Functionalism were considered. It was established that the demographic characteristics of both the sample and the population were similar enough for the results of this study to be generalised to the population with some degree of confidence. Much care was taken to test and validate each of the scales that comprised the questionnaire, and item analyses and factor analyses were carried out for every variable and group of variables. The measures developed in other parts of the world and by other researchers performed very well in a South African setting - as did the measures developed specifically for this study. Statistical associations and causal relationships between the various sets of variables, both at the sector level and at individual industry subgroup level, were sought by means of multiple regression analyses. Broad support was found for a 'culture-free hypothesis' that there are a number of stable relationships between organizations and their context; and these relationships will be constant in direction and strength regardless of differences in structures, or in contexts of structures between societies. Importantly, there were also a number of significant differences between this study and the findings of other studies which reflected South Africa's unique blend of developed and developing cultures and value systems. These differences provide fertile ground for future research in the field of Organization Theory. / Business Management / DBL