We consider the problem of partitioning n agents in an undirected social network into k almost equal size (differing by at most one) groups, where utility agent for a group is number her neighbors group. The core and envy-freeness are two compelling axiomatic fairness guarantees such settings. former demands that there be no coalition each has more than own group, while latter envy another they...

Objective: This research aimed at evaluating the moderator role of school connection on the impact of violent friends towards aggressive behaviors in adolescent students of Tehran high schools. Methods: A sample of 3529 participants from Tehran high school students was selected using multistage sampling method. Participants completed school connection questionnaire (SCQ), Iranian adolescents...