This chapter presents a set of requirements for next generation groupware systems to improve team cooperation and awareness in distance learning settings. The premise of the chapter is based on the observation that in distance learning online asynchronous (e.g., e-mail, conference tools) or synchronous (e.g., chat) mechanisms are used to facilitate collaboration and coordination to complete nec...

In dyadic models of indirect reciprocity, the receivers’ history of giving has a significant impact on the donor’s decision. When the interaction involves more than two agents things become more complicated, and in large groups cooperation can hardly emerge. In this work we use a Public Goods Game to investigate whether publicly available reputation scores may support the evolution of cooperati...

The evolutionary dynamics of the Public Goods game addresses the emergence of cooperation within groups of individuals. However, the Public Goods game on large populations of interconnected individuals has been usually modeled without any knowledge about their group structure. In this paper, by focusing on collaboration networks, we show that it is possible to include the mesoscopic information...

A laboratory experiment studies coordination and cooperation in games played in different networks local, random and small-world. Coordination on the payoff-dominant equilibrium was faster in small-world networks than in local and random networks. However, in a prisoner’s dilemma game, cooperation was the hardest to achieve in small-world networks. Two graph-theoretic characteristics clustering...

This paper proposes a network coded cooperation protocol for the uplink transmission of relay enhanced cellular networks, which is intended to multiple source-multiple relay cooperative clusters. Two variants of the network coded protocol are proposed, one employing XOR-based erasure codes, which operates on the cluster cooperation graph, and one employing Reed Solomon codes. The two protocol v...

Product graphs have been gainfully used in literature to generate mathematical models of complex networks which inherit properties of real networks. Realizing the duplication phenomena imbibed in the definition of corona product of two graphs, we define corona graphs. Given a small simple connected graph which we call basic graph, corona graphs are defined by taking corona product of the basic ...