Regarding the importance of the application of Information Technology and databases in learning promotion and academic success of students, the question being raised in current study is that what factors affect the application of databases by students. This is an applied research of descriptive kind. Since the author is seeking for identification of the relationship between these factors and use of Information Technology, this research is a correlation type. Data collection was performed by field studies and questionnaires. Formal validity showed validity of the questionnaire and reliability of measurement tools was proved by Chronbach Alpha coefficient in order to determine validity coefficient. The value for Chronbach Alpha calculated for current research was 0.951. Statistical community includes all students at Payam-e-Noor University of Mashhad, the number of whom is 517 according to a list provided by the university authorities. Based on sampling formula, the sample size is 200 people. Sampling method is hierarchical random. For hypothesis testing, regression analysis test and parametric t-tests and variance analysis were used. Finally, the results showed that there is a positive and significant relationship among the degree of application of databases by students, their skills and economic and technical factors. But there is no significant relationship between economic and environmental factors and application of information technology.

This paper studies the status of organizational commitment and its impact on occupational identity among the Ilam province Welfare Organization employees. The goal is to use this information in different human resource management scopes. The research is studied on the real case of all employees of Ilam province Welfare Organization, including formal, contractual and hourly employed personnel with total 738 personnel. Among the all employees 180 personnel are selected based on the Proportional to Size (PPS) sampling method. The questionnaires, after validity and reliability approvals, are derived and interpreted by SPSS and descriptive-analytical tables, respectively. Results of tests indicated that there is a significant relationship between organizational commitment and occupational identity. It is proved that people with achieved identity have the highest organizational commitment and conversely people with diffused identity have the lowest. But, no significant relationship has found among variables interactions except the relation between occupational identity status and organizational commitment among high experienced employees.

In Wireless Sensor Network (WSN) Cluster Head Selection is considered a gigantic challenge. In wireless sensor network LEACH protocol can be used to select cluster head on the bases of energy, but it’s still a dispute and required efficient when WSN becomes more scalable and divided into number of clusters. In this paper we proposed an A Probabilistic Approach for Efficient Cluster Head Selection in Sensor Network, for selection the cluster head efficiently in WSN. The proposed (PAECHS) algorithm is continuity of our previously work X-AODV, We evaluate our proposed algorithm through simulation in OMNet++ as well as on test bed; we experience the result according to our assumption. For further evaluation we also compare our proposed protocol X-AODV with several other protocols like LEACH, LEACH-C and consequences shows perfection.

Abstract:\nPersian Gulf region during the last decades of the new century, the most important region of the world and will continue to play an important role in international politics. There are many reasons for the importance of the Persian Gulf. First, the global oil and gas reserves in the Persian Gulf littoral states and lies and concentrates. In the new century provide.\nIn other words, the horizon of the world needs oil rich Persian Gulf region, there is another Enough energy to power industrial countries, especially the developing or developed in the U.S., Europe, Japan, China, Korea, and the Indian subcontinent to meet the new century. It is important to measure the effect of events such as wars, revolutions and rebellions, the area of oil and gas will continue to fail. Pressure on the consumer countries in the energy level of the international will to Persian Gulf the scene in such a compilation and in the framework of the carrier to the production energy sides and disorder entered serious basic interests to not damage their little not to enter \nIran is located at the center of strategic energy ellipse Middle East geopolitical areas and especially those versed in the political geography of the north side of the Persian Gulf and Oman Sea Oceanic Influence on India\'s fundamental role in the geopolitical strategies of international interaction Iran has brought. No doubt balance in the Persian Gulf is so broad in scope impacts the area in any structure a new geopolitical levels international vibrations may cause.

Hence, from the various criteria applied in several studies for assessing corporate governance, we select these criteria: board independence, ownership of institutional shareholders, ownership concentration and CEO duality tasks. For measuring the quality of corporate transparency, disclosure quality criteria published by the stock exchange has been used for all companies. We first sorting the collecting data by EXCEL and then by correlation test and simple and multiple regression in SPSS software we analyzes the data. Results indicate a direct significant relationship between the ownership of institutional shareholders and ownership concentration and corporate transparency, and an inverse significant relationship between board independence and CEO duality duties and corporate transparency in these industries.

In this paper, we extend the work done by \\cite{Gang} and \\cite{Owa3} for certain class of analytic functions to another subclass of analytic function. We obtain some properties related to convexity, extreme points and radius of univalency.