Web-based learning environments provide an attractive method for information dissemination, but in many instances they can be just electronic equivalents of printed course materials. Appropriate learning objectives and pedgagogical strategies are minimal or non-existent. Too often web-based learning environments lack cooperative and collaborative activities with the unintended consequence of fe...

This article presents a model of the use of communication about personal experience or experiences of third parties (gossip) in the context of cooperation. To date, previous research on the effect of gossip on cooperation has focused primarily on the manipulation of reputations. We present a formal model of vicarious information transfer, as a social learning strategy, between (potential) coope...

Cooperative learning is a pedagogical approach in which students collaborate small groups to attain shared academic objective. In the classroom, cooperative aims enhance outcomes by promoting exchange of information, social, and personal resources among students. Group formation critical complex step that significantly impacts effectiveness learning. this article, we propose novel for construct...

so far various methods for optimization presented and one of most popular of them are optimization algorithms based on swarm intelligence and also one of most successful of them is particle swarm optimization (pso). prior some efforts by applying fuzzy logic for improving defects of pso such as trapping in local optimums and early convergence has been done. moreover to overcome the problem of i...

We study the evolution of cooperation in the indefinitely repeated prisoner’s dilemma when it is costly for players to adjust their strategy. Our experimental interface allows subjects to design a comprehensive strategy that then selects actions for them in every period. We conduct lab experiments in which subjects can adjust their strategies during a repeated game but may incur a cost for doin...