Recent literature contains many examples of reputation systems which are constructed in anad hoc way or rely upon some heuristic which has been found to be useful. However,comparisons between these reputation systems has been impossible because there are noestablished methods of comparing...

Economic scheduling needs to be considered for Grid computing environment, because it gives an incentive for resource providers to supply their resources. Moreover, it enforces efficient use of resources, because the users have to pay for theiruse. Tendering is a suitable model for Grid...

In diesem Beitrag stellen wir ein Konzept greifbarer, gegenständlicher Benutzungsschnittstellen vor. Es werdenÜbergänge zwischen dem Modellieren im Realen und dem Erstellen virtueller Modelle geschaffen. Synchronzum gegenständlichen Modell entsteht ein virtuelles Abbild, das für Simulation,...

Borjas (1987, 1991 and 1994) developed the self-selection theory, applying Roy's model (1951) to migration studies. He establishes that the characteristics of migrants in terms of skills and abilities are driven by wage distribution differences between the host country and home. In this regard,...