نشریه بازیابی دانش و نظام های معنایی
پیاپی 17 (زمستان 1397)

The main purpose of this study was to investigate the effect of social capital and knowledge management on organizational capacity among employees of the ministry of sports and youth of the Islamic Republic of Iran. The statistical population of this study was all employees of the Ministry (N=965). For determining the statistical sample, 276 people were selected using the Cochran formula. For gathering data, Farajis social capital questionnaires (2010), Hemmatis Knowledge of Management (2010), and Moghimis Organizational Capacity (1390) were used and their reliability was obtained in a preliminary study (0.82, 0.80, 0.78) respectively. Data were analyzed using SPSS, 20 and Amos, 22. The results showed that social capital has a direct and significant effect on knowledge management and organizational capacity. Knowledge management has also had a positive and direct effect on organizational capacity. Finally, the results show that organizational social capital through mediator role of knowledge management has a significant effect on organizational capacity. The research findings indicate the importance of the role of social capital and knowledge of managers on organizational capacity. Therefore, it is suggested that the Ministry of Sport and Youth to create and strengthen the capacity building of employees by using knowledge-based programs and social capital.

In this article, we studied knowledge and content flows of the three main journals in technology and innovation management field that includes the journal of science and technology policy, journal of innovation management, and technology development management. The purpose of this paper was to investigate knowledge flows of journals and identification their main properties during five years, publications from 1392 to 1396. We attempt to provide for researchers in this field: knowledge flows, main properties in journals and published articles, and also content features of concepts and subjects. This study was done in two sections. At first, we examined knowledge flows and classified subjects of each journals and compared together. In two section we analyzed the data, and compared in industrial field. In during these years, journals have addressed various issues in this fields but the most subject clusters in each journals are; in the journal of science and technology policy journal, politics and economics; in journal of innovation management journal, knowledge management and strategy; and in technology development management journal, industry and technology.

By entering the third millennium and the age of innovation, we are witnessing rapid changes in technology and the intensity of the complexity of the environment. Today, the expansion of networks and computer computing is an integral part of the activities of various institutions to achieve the goals of the organizations. Most studies in virtualization technology have a descriptive-analytical state and have entered the subject from an informal point of view. In the present study, with an empirical approach, key factors for the implementation of virtualization systems in data centers of organizations from the point of view of IT specialists, identified and influenced seven factors: system quality, information quality, management and maintenance, cost reduction, ease of implementation , Testing and development, integration of resources and Sarmay consensus has been studied. The present study is applied in terms of its purpose and is based on the use of library study methods and field methods such as questionnaires, based on their nature, descriptive-survey. This means that firstly, by studying existing literature, the criteria and indicators of the study have been identified and based on that, the research hypotheses have been developed and, according to the assumptions, the conceptual model of the research has been developed. Finally, to test the hypotheses of the research, the method of structural equation modeling SEM).

The aim of this research is to study the dependency of students on social networks based on demographic variables. This applied and quantitative research carried out in survey design. The measurement tool for the study was a social networks addiction subscale adopted from questionnaire of Arslan & Kırık (2013). The reliability of tool based on Cronbach's alpha was 0.932. The content validity of tool was measured by view of specialist and construct validity was measured by factor analysis. The population of the study was 4771 undergraduate students at Azarbaijan Shahid Madani University and the sample size was 368 cases based on stratified random sampling method. SPSS software was used in descriptive and inferential statistics. Based on Pearson correlation test, the relationship between students’ dependency on social networks and Internet/social network rate of usage at 99 percent confidence level was positive and significant. Based on independent t-test, there was a significant difference in students’ social network dependency based on accommodation type. Based on ANOVA test, there was significant difference at 95 percent confidence level based on domain of study. Students’ dependency on social networks was in midpoint level. The students, who had further daily Internet or social network usage, had more dependency on networks. Students’ dependency on social networks with different levels of academic achievement was moderately similar. Dependency on social networks among two groups of students (dormitory/humanities domain) was more.

The purpose of this research is to determine the amount of electronic and printed resources and its effective factors among students of Razi and Azad University of Kermanshah. This research is applied in terms of its purpose and in terms of survey method. The data gathering tool is a questionnaire. The statistical population is the students of Razi and Azad University of Kermanshah in the academic year 1995-96, of which 35014 people and the sample number are estimated using 380 Cochran formulas. A stratified random sampling method was used for sampling, and descriptive statistics mean, standard deviation, and inferential statistics, variance, and ANOVA were used. The results of the study showed that 63.45% of the students used electronic resources and 36.55% of printed materials. Among the sources of electronic sources, the databases with the highest of 92.6 percent and the rate of use of electronic resources are very high, and print resources are moderately evaluated. The extent to which information needs are met by databases with an average of 4.66 at the highest level and the websites with the average of 2.37 have the lowest level of satisfying the information needs of the students. The results of the research showed that, while using electronic resources due to their advantages, they are more than printed sources, but print resources are still used remarkably, so electronic resources can not be obtained. They are completely replaced by print sources, but used as complementary material.

The internet of things will change our life in future significantly and will make the impossible, possible. A large volume of big data which is produced or taken by Internet of Things (IOT) contains valuable and useful information. By the prevalence of the wireless apparatuses technology such as Bluetooth, detection of radio frequency (RFID), Wi-Fi and data services on telephone, sensor, actuators and nodes embedded in the equipment, Wireless Sensor Networks (WSN) the internet of things has already passed its primary stages and is in the threshold of changing the current static internet into a fully integrated internet. Data mining; too, with no doubt plays a large role in smartness of the system and subsequently, provides suitable services and environment in offering services. Also, data mining techniques are used to cluster nodes and determine cluster head, in wireless sensor networks. This paper introduces the internet of things, architecture and its applications.