جستجوی مقالات مرتبط با کلیدواژه "دانشگاه های دولتی شهر تهران" در نشریات گروه "کتابداری و مدیریت اطلاعات"

In this research, the way of scientific cooperation among professors of educational sciences among scientific groups is investigated and it is clear how knowledge is transferred in scientific cooperation networks between them and what is the contribution of each of them in the production of scientific articles published in the country. The present study was conducted to study the Co-authorship network of faculty members in the field of education of Governmental universities of Tehran and review authorship patterns in 2795 published articles in scientific journals.

This study was conducted scientometric approach and social network analysis method. The statistical population of the research includes the internally published articles of the faculty members of educational sciences of Tehran universities, which were published by scientific research journals and periodicals and uploaded to the citation indexes of the sciences of the Islamic world science center and Magiran. 2795 articles that were indexed in these databases from 1377 to 1395 were examined with the available sample method. Since in the sample selection process, it was not possible to access all the articles of faculty members, and as a result, it was not possible to select samples using random methods, therefore, the available sample method was used to select the samples. The number of co-authors for each member was entered in a table in Excel software. The matrix was created manually. The result was a 106*106 matrix. Configure the Co-authorship network for the publication of internal papers was investigated using the macro indicators network analysis such as Density, clustering coefficient, mean distance, connectedness, and diameter of the network and for analyzing the performance of each faculty member with a compilation in the network, was used the micro indexes of the analysis of networks such as Indices degree centrality, betweenness, closeness, and eigenvector. To analyze and draw information obtained from the network were used U.C.I.Net software and its complementary package Net Drew.

The pattern of three authorships has been the most important collaborative pattern in the articles studied (%30). The network is composed of 106 nodes and 461 ties. The study of micro indicators showed that individuals such as Ali Delavar, Mahmoud Mehrmohammadi, Abbas Abbaspour, Mahboobeh Arefi, and Khosrow Bagheri with the highest degree of scientific collaboration with other writers, are the most participant in the network. Based on the analysis of the network structure in terms of micro-indices that indicate the individual's performance in the network, it can be said that according to the degree centrality index, people such as Mahmoud Mehrmohammadi, Korosh Fathi Vajargah, Mohammad Attaran, and Khosro Bagheri have a prominent position and influence And their power in the network is higher than other members and they have the most scientific influence and these people somehow control the flow of information in the network. The analysis of macro indicators also showed that the density of the mentioned network was 0.114, so the network did not have sufficient Cohesion. Therefore, the current network is of a discrete type and the flow of information is slow. In other words, the connection between the nodes is low and the network has low coherence and there are many holes in it.

Examining the writing patterns of the professors showed that the pattern of three writings in the published internal articles took the largest share, which was the result of the cooperation of the professors with students and other researchers rather than the cooperation of the professors with each other; Also, the examination of micro and macro indicators also showed that the scientific cooperation of professors in the field of educational sciences in the public universities of Tehran is not favorable.

The present research has been done with a view to identifying and ranking the supply chain risks in digital libraries of state universities in Tehran based on the 2018 version of ISO 31000.

The present research is an applied one and to implement it, survey and analytic methods have been applied with Shannon entropy to weight risks and fuzzy TOPSIS to evaluate them. Primarily the most important risks were identified using the relevant resources and the results of previous researches; a process which led to the formulation of a questionnaire with 5 components and 109 items. The stability of the questionnaire was calculated based on the internal consistency coefficient & Cronbach alpha coefficient using SPSS software. The resulted value in each aspect of the questionnaire amounted to more than %98 and then the analysis and ranking of the risks were carried out using the above-mentioned techniques.

In this research the risks of supply chain have been evaluated in 5 sections: suppliers, production & digital resources management, distribution of digital resources, services to users and common risks among the components of supply chain. In the suppliers section the risk index of  "The fluctuation  of exchange rates" has the highest rank(=%73), in production  and digital resources management, the risk index of "The strategy of collection development of digital resources" has the highest rank(=%73), in distribution of digital resources section, the risk index of "Possibility of rendering  web-based loan services in the digital library" has the highest rank(=%84), in services to users section,  the risk index of "The possibility of searching by means of any browsers in the digital library" has the highest rank(=%88) and in the common risks among the components of supply chain section, the index risk of "The increase of hardware prices of the components of supply chain due to the fluctuation of exchange rate" has the highest rank(=%82).

The risks based on their ranking and by applying the TOPSIS technique in the supply chain of digital libraries in the universities of Tehran in order of importance that is from number 1 to number 5 include: "risks of suppliers", "common risks among the components of supply chain", "risks relating to services of users", "risks involving the production & digital resources management", and "risks involving the distribution of digital resources".

The purpose of this research is to investigate the role of data mining on the organizational performance of Tehran University libraries with knowledge management approach. The research method is analytic-analytical. To analyze data from SP.S.S. And amos have been used. The research community includes the director of the central library and satellite libraries of the state universities of Tehran. In total, 213 central and satellite libraries and the same number of managers are identified and based on the Cochran formula, a sample of 137 managers. Regarding the normal distribution of data, the parametric test of tectonuclear / single-test test is used to examine the first three hypotheses (knowledge management status, organizational performance, and data mining utilization). The hypotheses of the conceptual model of research are also analyzed based on structural equations. The findings of the study indicate that only two hypotheses were confirmed by six hypotheses. None of the hypotheses related to the conceptual model of research, which were the main hypotheses of the research, were not confirmed. The results of this study showed that the status of data mining and organizational performance of the manager of the libraries of Tehran's public universities is moderate and knowledge management status is desirable. The use of data mining and knowledge management on organizational performance of the director of public libraries in Tehran's public universities is not affected. The use of data mining on knowledge management from the perspective of the director of these libraries is also not effective.

The main objective of this research was to investigate the use of full-text databases in the LIS theses of Tehran State Universities within the years 2005 and 2009. For this purpose، the total of 9952 citations related to 172 existing theses in the academic central libraries were studied. The data collected were analyzed by the bibliometrics and citation analysis methods. The results showed that only 499 (5. 01%) out of the total of 9952 citations were of full-text databases. By the use of Bradford law، the Emerald، Iran Doc. Pro Quest and Science Direct were chosen as the core databases in LIS. There was no statistically significance difference in the use of full-text databases with regard to database، university and subject. Citing the linguistic distribution of full-text data showed that most citations were in English language. Finally، the amount of the use of full-text databases by the theses has not been increased between the years 2005 and 2009. The results obtained in the present research showed that the use of databases was very low and no growing trend for citing databases did show. Also English language was Dominant language in citing databases.

This Survey examines the view points of the librarians in the central libraries of the state universities of Tehran on the necessity of continuing education (CE) courses. A questionnaire survey was conducted (76.7% response rate) to assess the requirement of continuing education (CE) courses. The results showed that about 98% of the librarians believe that it necessary to pass the CE courses. Among four main suggested subject areas, information technology skills were considered as the first priority by the librarians. Management was regarded as the second priority and librarianship and English courses were considered as the third priorities. Among the subclasses of the mentioned items, librarians recognized the subjects such as information literacy, information storage and retrieval, human resource management and Web- based skills highly important. Librarians believe that inter-organizational classes and virtual classes are the most suitable methods for holding CE courses. Moreover, librarians found workshops as the most suitable manner of providing CE courses. About 32% of the librarians believe that the inconsistency between the subjects and occupational needs can influence their participation in the CE courses. Introduction