We develop a dynamic network formation model that can explain the observed nestedness in real-world networks. Links are formed on the basis of agents' centrality and have an exponentially distributed life time. We use stochastic stability to identify the networks to which the network formation...

Der Beitrag skizziert zentrale Entwicklungstendenzen des Diskurses um ehrenamtliche Tätigkeit in den letzten etwa 30 Jahren. Dabei werden die Probleme der empirischen Erfassung des Wandels der Ehrenamtlichkeit verdeutlicht. Im Anschluss an die konzeptionelle Diskussion erfolgen Analysen zu...

Die "Technikakzeptanz" der Bevölkerung ist seit den 70er Jahren immer wieder Gegenstand von Umfragen. Dabei geht es vor allem um kontrovers diskutierte gesellschaftliche Konsequenzen der Kernenergie, der Informations- und Kommunikationstechniken und der Gentechnik. Heute ist es neben der...

This paper explores the following chain of conjectures: rising use of the internet, the widespread access to global information, and intensified communication between regions and countries brought about, for example, by intensified trade links bring about expansion of people's social space and...

Research on risk communication relates basic risk perception studies to the formulation of policies, the currently evolving legislation dealing with hazards, the key issues of public involvement, the risk and environmental management. Risk communication is a relatively new field based on a...

Research on risk communication relates basic risk perception studies to the formulation of policies, the currently evolving legislation dealing with hazards, the key issues of public involvement, the risk and environmental management. Risk communication is a relatively new field based on a...

In Capitalism, Socialism and Democracy (CSD, 1942), Schumpeter presents his paradoxical thesis that capitalism will destroy its own foundation, not by failure but by its success. He argues that the emergence of unfavourable circumstances will activate strong opposition from social critics and...

Die aktuelle Diskussion um die Ausgestaltung der wirtschaftswissenschaftlichen Politikberatung und die zum Teil harsche Kritik von Politikern am Sachverständigenrat zur Begutachtung der gesamtwirtschaftlichen Entwicklung in jüngster Zeit lenkt den Blick auf den Einfluss von Ökonomen auf die...

We provide a model that allows for a transition between the simplest variation of two basic models of strategic network formation: Bala and Goyal's one-way flow model without decay, where links can be unilaterally formed, and a version without decay of Jackson and Wolinsky's connections model...

This paper studies the effect of social closure on crime and tax evasion rates using disaggregated data for Italian municipalities. It measures the degree of social openness of a community by the diversity of its surname distribution, which reflects the history of migration and inbreeding. It...