substance abuse treatment network in iran, with nearly three thousand outpatient treatment centers, one thousand residential treatment centers, some general and specialized in-patient centers and more than ten thousand care givers; like medical doctors, psychologists, psychiatrists, nurses and social workers construct one of the main components of iran health organization, although may “not cou...

0747-5632/$ see front matter 2010 Elsevier Ltd. A doi:10.1016/j.chb.2010.12.001 ⇑ Tel.: +1 512 825 9772. E-mail address: [email protected] The increasing popularity of social network sites (SNSs) has raised questions about the role of social network media in the democratic process. This study explores how use of SNSs influences individuals’ exposure to political difference. The findings sho...

Among structured Peer-to-Peer systems, Chord has a general popularity due to its salient features like simplicity, high scalability, small path length with respect to network size, and flexibility on node join and departure. However, Chord doesn’t take into account the topology of underlying physical network when a new node is being added to the system, thus resulting in high routing late...

transmission network expansion planning (tnep) is an important component of power system planning. itdetermines the characteristics and performance of the future electric power network and influences the powersystem operation directly. different methods have been proposed for the solution of the static transmissionnetwork expansion planning (stnep) problem till now. but in all of them, stnep pr...

geological facies interpretation is essential for reservoir studying. the method of classification and identification seismic traces is a powerful approach for geological facies classification and distinction. use of neural networks as classifiers is increasing in different sciences like seismic. they are computer efficient and ideal for patterns identification. they can simply learn new algori...