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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Media Use of Mothers, Media Use of Children, and Parent–Child Interaction Are Related to Behavioral Difficulties and Strengths of Children

Poulain, Tanja, Ludwig, Juliane, Hiemisch, Andreas, Hilbert, Anja, Kiess, Wieland 06 April 2023 (has links)
The present study investigated the associations of media use of children, media use of mothers, and parent-child interactions with behavioral strengths and difficulties in children. Screen time of 553 2- to 9-year-old children and their mothers were indicated by the daily durations of their TV/games console/computer/mobile phone use. The amount of parent–child interaction was indicated by the frequencies of shared activities at home. Behavioral strengths and difficulties of children were investigated using the Strengths and Difficulties Questionnaire. Children whose mothers reported high screen times (>/= 5 h/day) were significantly more likely to show high screen times (>/= 2 h/day). High screen time of children was associated with more conduct problems, more symptoms of hyperactivity/inattention and less prosocial behavior. High screen time of mothers was associated with emotional problems, conduct problems, and symptoms of hyperactivity/inattention. In contrast, a higher frequency of parent–child interactions was associated with fewer conduct problems, fewer peer-relationship problems, and more prosocial behavior of children. Children might use the media behavior of their mothers as a role model for their own media use. Furthermore, the findings suggest that media use of children and mothers and parent–child interaction contribute independently to behavioral strengths and difficulties of children.
2

De la ville de l'automobile à la ville des transports collectifs : le cas des sites propres bus du sud est parisien / Interaction between speed and urban morphology : from the auto city to transit city

El Hadeuf, Mounya 14 June 2017 (has links)
Cette thèse explore la relation entre urbanisme et transport par l’étude de projets de bus en site propre dans dix villes de la proche banlieue parisienne, territoire qui dispose à la fois d’une accessibilité correcte à la ville-centre et d’opportunités foncières susceptibles de constituer un réel potentiel de « reconstruction de la ville sur la ville ». À travers l’étude de documents d’archives, elle retrace la genèse, entre propositions, négociations, adaptations et déploiements de ces projets de transport, et la complète par l’analyse de l’évolution des territoires urbains traversés, sur une période de 30 ans, grâce notamment à l’exploitation de la base de données des Modes d’Occupation des Sols de l’IAU-IDF. En s’appuyant sur cette double démarche, cette thèse tente d’appréhender le concept d’« urbanisme orienté par les transports collectifs » et met en évidence des stratégies contrastées des communes traversées face à l’arrivée de ce type de projet de transport, ainsi que les corrélations qui peuvent exister entre ces stratégies, l’histoire de ces communes et leur composition socio-démographique. Elle révèle également des écarts entre les volontés affichées et les réalisations conduites ou les résultats obtenus, écarts dont les causes peuvent être diverses, mais qui permettent de mieux comprendre les efforts qui restent à conduire dans différents domaines pour mieux assurer la cohérence entre projets transport et projets urbains. Les exemples traités montrent que le projet de bus en site propre peut constituer le socle d’une action en faveur d’un « urbanisme orienté par les transports collectifs » ou n’engendrer qu’un « transport orienté par le développement urbain ». Dans les deux cas, on peut considérer sa réalisation comme une réussite selon les critères de performance du système de transport, ou estimer que dans le second cas, une partie seulement des potentialités du projet ont été réalisées, et qu’il est possible d’en tirer des enseignements pour faire évoluer les pratiques et les dispositifs existants / This thesis explores the relationship between urban planning and transport, by studying dedicated bus lanes projects in ten cities of the near Parisian suburb, a territory which has both correct accessibility to the city-centre and real estate opportunities, so that it can constitute a potential of « rebuilding the city over the city ». By studying archival documents, it traces the genesis of these dedicated bus lanes, from propositions, to negotiations, adaptations and deployments, associated with the analysis of the urban evolution of the concerned territories, during 30 years, mainly by using the land-use database from IAU-IDF. By this double approach, the research tries to understand the concept of « Transit Oriented Development » and assesses contrasted strategies of concerned cities toward these types of projects, and highlights the correlation between these strategies and city’s history and the social demographic composition. It also reveals the gap between the stated will and undertaken implementation or achieved results, a difference that may have various causes, but also enables to understand the different efforts that must be made to ensure the coherence between transport projects and urban projects. A dedicated bus lane can be a basis for an action in favour of a « Transit Oriented Development » or lead to a « development oriented transit ». In both cases, we can consider its implementation as a success, according to transport systems criteria, or deem that in the second case, only a part of the project potentialities were achieved, and that it is possible to learn from these experiences to develop the current practices and process

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