Cette thèse s’intéresse aux effets de l’opposition entre les dynamiques migratoires et les dynamiques de contrôle frontalier. L’étude se centre sur le flux de migrants centraméricains à destination des États-Unis. Ce flux transite par un système de frontières formé d’une zone tampon sur l’ensemble du territoire mexicain et d’une frange érigée en rempart high-tech à la frontière sud des États-Unis. Dans cet immense espace, la frontière a créé des marges par où les migrants tentent la contourner en traversant par une économie souterraine structurée autour de l’abus aux migrants clandestins en transit. L’analyse du système migratoire d’un village des hautes terres du Guatemala montre comment le flux persiste malgré la frontière par l’action en réseau de migrants. La comparaison entre une trentaine d’expériences d’hommes et de femmes en mobilité clandestine sur la route de transit révèle que la frontière s’abat sur les acteurs dans des modalités spécifiques selon leur genre et leurs ressources sociales, économiques et de mobilité. Les migrants éprouvent la frontière comme un espace d’adversité auquel ils doivent s’adapter en permanence en l’assumant intégralement afin de pouvoir continuer leur voyage vers le lieu qu’ils imaginent au nord. Ce travail, fondé sur des enquêtes de terrain réalisées entre 2005 et 2012 dans des lieux d’origine, de transit et de destination disséminés dans l’espace migratoire, cherche à illustrer comment un flux migratoire et ses acteurs réagissent à un système frontalier contemporain. / This thesis addresses the effects of the conflict between migration dynamics and the dynamics of border enforcement. The study focuses on the flow of Central American migrants heading to the United States. This flow follows a system of borders formed by a buffer zone throughout Mexican territory and a strip of land erected as a high-tech rampart on the southern border of the United States. Across this immense space, the border has created margins that migrants try to circumvent by entering an underground economy structured around the abuse on clandestine migrants in transit. The analysis of the migratory system of a village in Guatemalan highlands shows how the migration flow persists, despite the border, through the action in network of migrants. The comparison of about thirty experiences of men and women in clandestine movements reveals that the border affects the various actors in specific ways, depending on their gender as well as their social, economic and mobility resources. Migrants experience the border as a space of adversity to which they must constantly adapt to, by assuming it integrally, in order to be able to continue their journey to the place they imagine northward. This work, based on field investigations conducted between 2005 and 20012 during different stages of the migratory process (e.g. in places of origin, transit and destination) seeks to illustrate how a migration flow and its actors react to a contemporary system of borders.

Application of (geo)demographic methods in education Abstract This master's thesis presents the possibilities of application of demographic, geodemographic and statistical methods on data published by the educational sector. The methods of demographic analysis are represented by the usage of rates, the concept of multistate demography (Markov chains) and the application of life tables. The enrollment ratio at particular levels of education, the average length of schooling and the number of dropouts from school grades are evaluated by these procedures. Markov chains which are based on the probabilities of transition between grades are also examined in terms of their use for forecasting purposes. These methods analyze the situation at the preschool, primary and secondary levels and are used on data from the annual Statistical Yearbooks on Education. In the field of geodemography, the so called preferential model of migration flows is presented. This model examines how applicants for tertiary education prefer or reject the regions of the Czech Republic for their tertiary education studies. The last method is the binary logistic regression which analyzes the inequalities in access to tertiary education. Both preferential model and logistic regression are based on data files on the admission process at...