This work deals with the data migration during the process of mergers and acquisitions. The first, theoretical part, defines the general terms concerning mergers and acquisitions, further mentions motives that may lead to it, and the basic stages of the implementation process of mergers and acquisitions. This section also presents brief information on selected methodologies of project management, of which principles are used in the next part, dealing with data migration projects. The aim of this work is to develop a methodology for project management of data migration in mergers and acquisitions process, which may serve as a guide for merging companies and data migration teams. In the methodology there are specified activities and defined procedures to be followed in the various stages of the project life cycle. To each activity the way and necessary prerequisites for carrying out are specified. The methodology also describes common problems with which the data migration project in carrying out the action may be faced and which could threaten the success of the project or its part. For each potential problem a possible way to eliminate it is added, or solutions.

Cette thèse s’intéresse au rôle des TIC dans l’évolution du projet migratoire des migrants africains subsahariens en Turquie. L’approche interdisciplinaire choisie a permis d’aborder la question sous l’angle sociologique et communicationnelle en prenant en compte les aspects politiques et géographiques. La migration des africains subsahariens vers la Turquie est associée au renforcement des contrôles aux frontières externes notamment européennes qui favorise la construction de nouvelles routes migratoires et nouveaux pôles de transit. Ce renforcement des contrôles frontaliers conduisent les migrants à reformuler leur projet migratoire. Dans ce contexte de migrations irrégulières, cette thèse cherche à comprendre comment les migrants approprient les TIC et quel est rôle de celles-ci dans la construction et le maintien des réseaux sociaux. / This thesis intends to question the role of ICTs in the evolution of the migration project of the sub-Saharan African migrants in Turkey. The interdisciplinary approach adopted in this thesis allowed to examine the question under sociological and communicational point of view by taking into account the political and geographical aspects. The migration of African sub-Saharan towards Turkey is associated with the reinforcement of controls at the external border, particularly in Europe, which favors the appereance of new migratory roads and new transit hubs. This reinforcement of border controls leads the migrants to reformulate their migration project. In this context of irregular migrations, this thesis intends to understand how the ICTs are appropriated by migrants and what is the role of these technologies in the construction and the maintenance of the social networks.