A population of voters must elect representatives among themselves to decide on a sequence possibly unforeseen binary issues. Voters care only about the final decision, not elected representatives. The disutility voter is proportional fraction issues, where his preferences disagree with decision. While an issue-by-issue vote by all would maximize social welfare, we are interested in how well ca...

The aim of this study was to determine the height(Ht) and weight(Wr) of Kermanian student aged 6-17 years.for this purpose in a cross- sectional study by a multi- stage sampling method,3419 healthy girls and 3287 healthy boys were studied for Ht and Wt. For a more precise evaluation of results the students were divided into two groups: 6-10 ( first group) and 11-17  years old( second group). In...

The interactions among peers in Peer-to-Peer systems as a distributed collaborative system are based on asynchronous and unreliable communications. Trust is an essential and facilitating component in these interactions specially in such uncertain environments. Various attacks are possible due to large-scale nature and openness of these systems that affects the trust. Peers has not enough inform...

Reports on recipients of IAS society awards.