Platforms operators act as private regulators to increase usage and maximize profits. Their goals depend on the development of the platform: overcoming the chicken-egg problem early on requires attracting platform participants while quality becomes more important later on. Private regulators...

We study the conditions for the emergence of cooperation in a spatial common-pool resource game. We consider three types of agents: cooperators, defectors and enforcers. The role of enforcers is to punish defectors for overharvesting the resource. Agents are located around a circle and they only...

The insight that it is the medium that affects a society and not the content which is delivered over that medium, is not new by far, thus "the medium is the message" (McLuhan 1967). In contemporary industrial societies, the share of user-generated information consumed everyday over the internet...

Does the Internet undermine social capital or facilitate inter-personal and civic engagement in the real world? Merging unique telecommunication data with geo-coded German individual-level data, we investigate how broadband Internet affects several dimensions of social capital. One...

The Social Cloud framework leverages existing relationships between members of a social network for the exchange of resources. This thesis focuses on the design of coordination mechanisms to address two challenges in this scenario. In the first part, user participation incentives are studied. In...

E-Learning, Web 2.0 Mikrolernen und Wissensmanagement verändern die betriebliche Weiterbildung grundlegend und bestimmen zunehmend die betrieblichen Lernwelten. Sie beginnen die traditionelle Weiterbildung mit Seminaren und Workshops zu ergänzen oder gar abzulösen.Für Betriebsräte sind...

The Internet has enabled new forms of large-scale collaboration. Voluntary contributions by large numbers of users and co-producers lead to new forms of production and innovation, as seen in Wikipedia, open source software development, in social networks or on user-generated content platforms as...

Changes in communication technology have allowed for the expansion of data collection modes in survey research. The proliferation of the computer has allowed the creation of web and computer assisted auto-interview data collection modes. Virtual worlds are a new application of computer...