Wireless Sensor Networks are one of the most important distributed networks which are used in the wide range of applications. Energy is one of the major limitations of wireless sensor networks, which has direct impact on the network's life time. LEACH protocol is one of the most wellknown Clustering schemes that select cluster heads randomly. Clustering is an effective topology control Approach in wireless sensor networks. In this paper, we proposes new clustering algorithm that using an imperialist competitive algorithm to select cluster heads in LEACH algorithm. Simulation results show proposed algorithm can prolong the network lifetime efficiently compared with LEACH protocol. General TermsMeta heuristic algorithms, clustering.

In this paper, it is intend to implement four different algorithms in data mining (C5.0, C&R tree, QUEST ,CHAID) on the data related to the level of familiarity with computers and Internet. The goal of this paper is prediction of the effect of computer literacy and internet literacy on Digital literacy competence of individuals. To determine best predictive model, the accuracy of generated model is obtained. The prediction of Digital literacy competence shows the ability and skills of individuals to acquisition of new technologies, because using new technologies leads to reach performance improvement and higher motivations.Model of C&R tree with 73.2%, has had the best accuracy. The data in this study are in the form of questionnaire and were taken from undergraduate students of Islamic Azad University of south Tehran branch. This paper uses master`s thesis data with the titles of the relationship between digital literacy and academic performance and progress motivation of students of graduate school of literature and Foreign languages of Islamic Azad university of south Tehran.