منصوره دمرچی لو

Intruduction: The problems and disadvantages of thesauri and the increasing use of ontology in data retrieval have led to studies over the past two decades to suggest the use of thesauruses in the design and construction of ontologies. So, the aim of this study is to review and present a summary of available information about the converting of the thesaurus to ontology. The study was conducted using a systematic review. Kitchenham`s protocol was used (including Research Questions, Search Process, Inclusion and Exclusion Criteria, Quality Assessment, Data Collection and Data Analysis). Five research questions (including what are similarities between thesaurus and ontology? what are differencies between thesaurus and ontology? what are the methods of converting a thesaurus to ontology? what are the benefits of using the thesaurus to create ontology?  and what are the challenges for converting the thesaurus to ontology?) were answerd based on the analysis. The search strategy was determined and implemented and after the removal of duplicate documents, 71 documents were obtained. Then the documents were matched with the inclusion and exclusion criteria. Finally, 13 documents were analyzed as final documents for answering research questions. The results showed that both thesaurus and ontology were used in organizing and covering a particular subject area terminology and their main difference is in the amount of payments to semantic relations between concepts. The definition of classes based on the concepts contained in the thesaurus, the definition of the relationship between concepts and the use of a formal language were the common in all proposed methods. Taking time and avoiding repeating are the benefits of using the thesaurus and the need for an expert specialist in the process of doing work is one of the challenges of converting thesaurus into ontology.

Identifying The core journals can help libraries to identify the actual needs of users, improve the process of providing needed resources, eliminate unnecessary issues, and optimize allocation of funds. So, the purpose of this study is to identify core journals by examining the references of the scientific productions of Shahid Beheshti University of Medical Sciences in Web of Science and Scopus (2017), and examine the status of their access and quality.

The research was citation analysis and The Bradford law of scattering was used to determine the core journals. The population of the study is citations in 3961 indexed articles of Shahid Beheshti University of Medical Sciences in Web of Science and Scopus. The status of access to the core journals was determined using the website provided by the Ministry of Health for this purpose and to determine the quality of journals, Q index was used using Journal Citation Reports (JCR)

Out of 10155 Cited Journals in the scientific productions of Shahid Beheshti University of Medical Sciences, 104 titles were identified as core journals. Checking the status of access and quality of core journals showed that 69.2% of the journals are accessible through the Journals Subscribed by the academic consortium of the Ministry of Health and 93.3% of core journals are indexed in ISI.

Considering the provision of two-thirds of the core journals through the Scientific Resource Consortium, It seems that the practitioners of the selection and provision of journals in the Ministry of Health have been doing well.Also,  93.3% of the core journals are listed in Journal Citation Reports (JCR) and this shows that researchers at Shahid Beheshti University of Medical Sciences use Credible journals in their compilations.

  The Ministry of Health and Medical Education is one of the main providers of health information for patients and caregivers in Iran. The current study aimed to assess the quality and readability of online health information produced by the Ministry and its affiliated organizations. In this descriptive-survey study, the websites of the Ministry of Health and its affiliated medical universities (N=48) were assessed during April to July 2018. The corpus included 10780 records; however, only 7164 records produced for patient education were included in the study. Finally, a sample of 215 records were randomly selected and reviewed by two researchers. The quality and readability of the records were assessed by DISCERN questionnaire and Flash Dayani formula, respectively. The mean scores for the quality (M=41.14) and readability (M= 35.27) of health information indicated a moderate quality and low readability. The highest mean scores on information quality (M= 49.50) and health information readability (M= 54.28) were obtained by Tabriz and Shahid Beheshti Universities of Medical Sciences, in that order. The quality of online health information produced by the Ministry of Health in Iran ranges from poor to moderate and it is written at difficult level; therefore, it is recommended to consider international standards for the content of patient education packages prior to developing any educational packages.

Findings from studies on science assessment and evaluation are the most important tools for planning and policy-making in each country; therefore, the aim of this study was to investigate the scientific output in the field of Persian Gulf in Scopus during 1996-2015.
Material and This descriptive survey study was performed using scientometrics method. The study population was the indexed articles in Scopus with keyword of Persian Gulf from 1996 to 2015. Data were analyzed using analytical tools in Scopus and SPSS 21.
Findings: The results have shown that all 2667 documents written by 84 countries have been published in 160 journals with 27 different fields. The average growth rate of annual outputs was 22.5% in the world, 17.5% in the Middle East and 39.2% in Iran. Moreover, 23.8% of the documents have one author and documents with three or two authors are in the next ranks. Most scientific outputs are related to the field of "medicine".
In the last 20 years, we are faced with significant growth in scientific outputs in the field of Persian Gulf. Although Iran has the most scientific outputs in this field, the qualitative evaluation of scientific outputs published by this country via indices of "the average number of citations of articles" and "h-index" has indicated their low effectiveness, which should be paid attention.

Citation analysis is a bibliometric method used for the calculation of the mean number of citations and detection of highly cited references, frequency distribution of citations in different languages, update rate, efficacy of resources and number of core journals of a scientific domain. This process elucidates the information needs of researchers in a specific realm of science and enhances the knowledge of the authorities and librarians to provide efficient information sources and use the budget for providing a rich collection of scientific materials. This study aimed to perform a citation analysis on dental journals. A checklist was prepared including the type of cited material (article, book, thesis, etc.), publication year, language, type of access (consortium, free, none) and if accessible through the consortium, name of the database through which the article can be accessed. Data were analyzed using SPSS software. Using Bradford’s law of dispersal of publications, the core journals in the field of dentistry were specified. The authorities must consider the core journals in each scientific domain when making a decision on purchasing subscription or extending a contract with databases in order to be more successful in obviating the information needs of researchers. Authorities have to consider the core journals in each field when deciding on purchasing subscription or extending the contract with databases in order to be more successful in obviating the scientific needs of researchers.

This article has evaluated the impact of using Meta tag on the improvement of information retrieval of the World Wide Web. So it reviewed the research papers that have examined Meta tag as a means to enhance information retrieval. Results showed there were some researches that have confirmed the using of Meta tags was efficient for improving information retrieval of the web, but results of a research that has done by Mohamed (2006) indicated no significant difference in the rank of pages that include metadata and those that don’t include any metadata. Therefore more studies should be done in this field. In general, Meta tags can provide site owners and authors with a degree of control over how a web page is indexed and this is a considerable advantage that it shouldn’t be ignore easily.

The rate of published articles in Medicine, such as other fields, has considerably increased. So it necessitates evaluating the capabilities of databases in indexing medical journals. Searching and retrieving Persian medical articles was carried out via Magiran, Iranmedex and Scientific Information Database (SID). As Precision and recall are used for evaluating search engines, this study considered the relative recall of aforementioned databases in dentistry. For this, we selected 29 keywords in dentistry and searched them in the 3 mentioned databases. Results showed that Iranmedex has the highest recall (0.72) and Magiran’s recall is higher than Sid’s.