establishment of the gas exporting countries forum in tehran in 2001 has proved to be one of the most important changes in the gas market. gecf has a considerable share in the world liquefied natural gas (lng) trade. facts show that current routes of lng trade are not optimal. hence, in this paper we examine the development of cooperative strategies between countries exporting (lng) and members...

This paper focuses on the formal assessment of the properties of cooperation enforcement mechanisms used to detect and prevent selfish behavior of nodes forming a mobile ad hoc network. In the first part, we demonstrate the requirement for a cooperation enforcement mechanism using cooperative game theory that allows us to determine a lower bound on the size of coalitions of cooperating nodes. I...

With the passage of time, the development of communication technology and transportation broke the isolation among people. Relationship tends to be complicated, pluralism, dynamism. In the network where interpersonal relationship and evolved complex net based on game theory work serve respectively as foundation architecture and theoretical model, with the combination of game theory and regard p...

Health care organizations often enter into a cooperative arrangement to create safety-net programs and coordinate care. Maintaining effective cooperation in such alliances poses special problems that can be examined using network analysis and explained in game theory terms. A mental health coalition case study is presented using network analysis and game theory interpretations. Had a positive-s...

A cooperative game with transferable utility (TU) is a pair 〈N, v〉, where N is a nonempty, finite set and v : 2N → R is a characteristic function, defined on the power set of N , satisfying v(∅) := 0. An element of N (notation: i ∈ N) and a nonempty subset S of N (notation: S ⊆ N or S ∈ 2N with S 6= ∅) is called a player and coalition respectively, and the associated real number v(S) is called ...

This paper focuses on the formal assessment of the properties of cooperation enforcement mechanisms used to detect and prevent selfish behavior of nodes forming a mobile ad hoc network. In the first part, we demonstrate the requirement for a cooperation enforcement mechanism using cooperative game theory that allows us to determine a lower bound on the size of coalitions of cooperating nodes. I...

There is currently much interest in the problem of measuring the centrality of nodes in networks/graphs; such measures have a range of applications, from social network analysis, to chemistry and biology. In this paper we propose the first measure of node centrality that takes into account the community structure of the underlying network. Our measure builds upon the recent literature on game-t...

cooperation is the foundation of many protocols in wireless networks. without cooperation, the performance of a network significantly decreases. hence, all nodes in traditional networks are required to cooperate with each other. in this paper, instead of traditional networks, a network of rational and autonomous nodes is considered, which means that each node itself can decide whether to cooper...

Why cooperation is well developed in human society is an unsolved question in biological and human sciences. Vast studies in game theory have revealed that in non-cooperative games selfish behavior generally dominates over cooperation and cooperation can be evolved only under very limited conditions. These studies ask the origin of cooperation; whether cooperation can evolve in a group of selfi...