فهرست مطالب فریبا جلیلی

 The massive volume of data and information, on the one hand, and the growing importance of data and information in libraries, on the other, make data management and information inevitable. Data governance is necessary to better manage data in organizing the library information. This research aims to librarians' attitude towards implement and execute data government strategies in planning in order to organize information resources of libraries of Islamic Azad University.

 the research is an analytical-survey study. The statistical population consists of 155 managers and librarians of the central libraries of the provincial centers of the Islamic Azad University. Data gathering tool is a researcher-made questionnaire. The questionnaire includes 38 items based on data governance components. Content validity method was used to assess validity and Cronbach's alpha test (0.941) was used for reliability.

 the research findings revealed that librarians’ attitude towards seven components of data organization in central libraries of Islamic Azad University including data quality, data user, data process, data standard, data integrity, data security and data modeling except for the component of data integrity did not have significant relationship with educational level, academic major, and work experience of managers and librarians which had a significance level of 0.08. Improving the quality of information organizing, training of human resources, use of standard tools along with strategic planning for library are important factors in implementation of data governance.

 Developing a codified data governance program based on the main elements of each of the identified components and using the opinions of experts and managers of library in finalizing this program play important roles in the success of data governance implementation. The impact of data governance on the organization of information resources leads to proper planning in academic libraries.

This research aims to study the dimensions of implementation of data governance strategies in planning in order to provide information services of libraries of Islamic Azad University.The research is an analytical-survey study. The statistical population includes central libraries of Islamic Azad University’s branches in provincial centers (35 branches), their managers and librarians (155 individuals).The research findings revealed that librarians’ attitude toward seven components of providing information services in central libraries of Islamic Azad University including data quality, data usage, data standard, data security and data modeling do not have significant relationship with their educational level, academic major, and work experience while the component of data usage and data standard in educational level showed a significant relationship. Results of the study also showed that average feasibility for implementation of data governance strategies in providing information services was higher than that of average population. In addition, librarians evaluate feasibility for implementation of data governance strategies in data organization in central libraries of Islamic Azad University to be desirable which is higher than average level. Accordingly, the highest to lowest scores for the components include data usage, data process, data quality, data integrity, data security, data modeling and standard in service delivery. The results also show that libraries can largely implement these strategies.The impact of data governance on the organization of information resources leads to proper planning in academic libraries.

  The purpose of this study was to implement and execute data governance strategies for planning the collection making of information resources in libraries of Islamic Azad University.

 The research is a descriptive-analytical survey. Statistical population of the research included all of librarians working in Central libraries of Islamic Azad University in 2017 who were 155 librarians. In order to determine sample size, Morgan’s sampling formula was used and 108 individuals were selected as sample. Data collection tool was a researcher-made questionnaire to measure data governance. The questionnaire’s validity was proved and its reliability was calculated using Cronbach's alpha equal to 98%. The collected data was analyzed in terms of descriptive statistics, one-way ANOVA, Levene’s test using SPSS ver. 25 and Microsoft Excel.

 The findings showed that librarians' attitudes toward seven most components: data quality, data usage, data process, data standardization, data integrity, data security and data modeling on resource collection in the central libraries of Islamic Azad University, according to educational level, there is no significant relationship between field of study and work experience (P> 0.05), in some components such as: the use of data in collection according to the field of study and data process and data modeling in collection, according to work experience has a significant relationship(p < 0.05).

 Results of the study showed that the librarians considered feasibility of implementation and execution of data governance strategies in resources and services planning of the libraries of Islamic Azad University higher than average level (desired level).

Water electrolysis is the major method for production of high purity oxygen gas. In this process, water decomposes into its elemental constituents, oxygen and hydrogen gases. In this study, various inexpensive substrates such as nickel foam, stainless steel sheet, nickel grid, brass sheet and copper sheet used as an oxygen electrode. The electrochemical techniques such as cyclic voltammetry and linear sweep voltammetry were used to evaluate the performance of electrodes. The obtained results of this study showed that nickel foam has a lower overpotential in the current density of 50 and especially 150 mA cm-2 than other samples. The overpotential of nickel foam at a current density of 50 and 150 mA cm-2 were, 442 and 580 mV respectively, which is low than two nickel mesh 60 mV and stainless steel sheet 48 mV, have less overpotential. In addition, nickel foam had a good performance in real condition and its cell efficiency at 25, 40 and 60 ° C showed 59.24, 61.83 and 67.70 percent, respectively.

Goal: The purpose of this research isevaluating the feasibility of implementation of knowledge management in the collegiate libraries of Kermanshah city on the basis of Bukowitz and William’s model. This research is a descriptive survey study and statistical population of research was a group of 76 librarians that were employed in the collegiate libraries of Kermanshah city and formed the whole population. The tool which used for data collecting was a questionnaire whose validity measure by Cronbach’s alpha as 0.96. In order to analyze data obtained from survey, indices of frequency, mean percentage, and standard deviation in the form of table were used as descriptive statistics, andone-sample t-test was used as inferential statistics. According to surveys that conducted and results of this research showed that the highest average obtained for variables of “acquiring knowledge” (3.10) and “adopting knowledge” (3.03), and other variables record averages obtained averages lower than the average of population. Results of research showed that components of Bukowitz and William’smodelin the collegiate libraries of Kermanshah city are not in a desired situation and need planning and paying more attention, especially in the field of sharing and creating of knowledge. Implementing of these plans will leads in better service providing and consequently, facilitating of learning, education and research