The sharing economy is a new promising trend with many positive outcomes on society and the environment, as it provides potential for sustainable solutions due to the reduction of resource consumption and less waste. However, research and practice show that sharing comes with its own share of problems. People often act selfishly, and in worst-case scenarios try to take advantage of others without contributing to the shared good. To achieve the higher goal of sustainability, it is important that conflicts in the sharing economy are prevented, and a setting is achieved that allows people to easily behave in a cooperative and sustainable way. The present research examines which conflicts emerge in sharing communities (study 1) and community gardens in particular (study 2), and whether regulation can prevent conflicts in large groups. Two exploratory studies were conducted. First, a qualitative study with consumers and non-consumers of the sharing economy revealed that regulatory systems are perceived as important for preventing the exploitation of other community members, but also that cooperation should not be enforced with strict controls and punishment. Rather, problems should be discussed in a democratic group setting, rules and goals should be set up together, and trust should be built. Second, a questionnaire study with community gardeners in Austria confirmed these results, and showed that trust is related to less conflict in community gardens, while harsh forms of regulation are related to a potential for greater conflict. Additionally, the results indicate that soft forms of regulation are related to fewer relationship and task conflicts, better conflict resolutions, a high sense of community, and greater trust in the community. We then discuss how these findings can be used to regulate sharing economy activities and give limitations and directions for future studies.

La violence interpersonnelle n’a encore jamais été globalement étudiée pour l’Égypte antique. Elle a été examinée pour les époques lagide et romaine, mais à partir de la seule documentation grecque. Cette thèse a pour objectif l’étude de ce phénomène au Nouvel Empire et aux époques grecque et romaine. Cette approche comparative vise à souligner les spécificités propres aux deux grandes périodes, ainsi que les similarités dans l’expression et le traitement de la violence interpersonnelle. Pour mener cette recherche, tous les textes égyptiens des périodes envisagées mentionnant une agression physique dans un cadre quotidien ont été traduits et analysés. Le corpus de cette étude intègre des textes documentaires, littéraires, royaux et funéraires. Une analyse du vocabulaire de la violence a été menée, ainsi qu’une étude des mécanismes du règlement des conflits violents. Enfin, a été posée la question d’une spécificité de ces aspects en fonction de la nature des protagonistes de la violence. / Interpersonal violence in Ancient Egypt has never been subjected to a comprehensive study. Papyrologists examined it for the Hellenistic and Roman periods, though based on the sole Greek documentation. The objective of this dissertation is to study this social phenomenon for the New Kingdom, and the Greek and Roman periods. This comparative approach endeavours to highlight the characteristics and similarities of each epoch in the mechanisms of expression and treatment of interpersonal violence. For this purpose, every Egyptian text from the New Kingdom, and Greek and Roman periods that reports a physical assault has been translated and analysed. Therefore, this research includes documentary, literary, royal and funerary texts. A thorough analysis of the terminology of violence was carried out, as well as a study of the mechanisms of conflicts regulation. Finally, the issue of specificities according to the gender, the social status and the age of both victim and assailant was raised.