Der Einsatz von Informations- und (Tele-)Kommunikationssystemen für die Wirtschaft ist durch den rapiden technologischen Fortschritt zu Beginn des 3. Jahrtausends zur allgegenwärtigen Erscheinung geworden. Unter Schlagworten wie e(lectronic)-, m(obile)-, u(biquitious)-Computing/Commerce werden...

This paper shows how conflicting normative views of fair contribution rules can be used to design sequential contribution mechanisms to foster human cooperation in heterogeneous populations. Our model predicts that a sequential mechanism which solicits contributions first from wealthy actors...

Alternative telecommunications operators have continuously invested in their own infrastructure in recent years. After more than a decade since liberalization, competitive conditions have substantially changed, especially in urban areas. European regulatory authorities have acknowledged this...

Economists have a long tradition in identifying the evolution of cooperation in large, unstructured societies as a puzzle. We suggest a new explanation for cooperation which avoids restrictions of most previous attempts. Our explanation deals with the role of internalized norms for cooperation...