جستجوی مقالات مرتبط با کلیدواژه « شاخص هرش » در نشریات گروه « پزشکی »

Today, the use of scientometric methods to evaluate the scientific outputs of researchers in various fields has been highly regarded and the Hirsch index (h-index) is one of the most important scientometric indices due to the simultaneous measurement of quantity and quality of scientific outputs. Therefore, the aim of this study was to evaluate the status of Iranian agricultural articles at the Scopus citation database based on the h-index. This applied study was performed using a scientometric method. The research population consisted of 4037 agricultural articles produced by Iranian researchers from 2010 to 2016, which were extracted from Scopus. Excel software and SPSS 16 were used to draw tables and analyze the data, respectively. Moreover, the Spearman’s correlation coefficient and Pearson test were applied to answer the research hypotheses. In this period, 4037 agricultural articles of 157 Iranian researchers were indexed at Scopus, of which the largest was in 2011. The Advances in Environmental Biology Journal had the highest number of articles (237) and the Bioresource Technology Journal had the highest h-index (19). The results of Spearman's correlation coefficient showed that there was a significant relationship between the h-index and number of articles (P-value <0.05). Iran in the agricultural field is ranked 3rd place in the Middle East and 42th in the world based on h-index. Although Iran has been able to gain stable place in production of agricultural articles, it has not been successful in the region and world in citing its articles and h-index as well as further efforts are needed in this regard.

Today, the extraction of scientometric indicators has been widely used in prediction of the scientific status of researchers, organizations and countries in various national and international fields. The aim of this study was to determine the participation in the production of science and partnership pattern of researchers in Hamedan University of Medical Sciences based on the databases of Web of Science (WoS), Scopus and Google Scholar.
Material and This applied and scientometric study was conducted on 100 top researchers of ISI in terms of the number of articles in 2014. The number of articles, citations and h-index were extracted from WoS, Scopus and Google Scholar from 2012 to 2014. Data were analyzed using SPSS, Stata and R.
Findings: The number of publications and citations has increased over three years in three databases. The correlation between the number of publications in Google Scholar and the number of citations in WoS and Scopus was weak but significant. Negative binomial regression model indicated that the number of publications would be enhanced 7% in WoS and Scopus through the increase of one article in Google Scholar. Zero-inflation negative binomial model illustrated that odds of zero of the citation number in Scopus and WoS will be 0.66 and 0.27 times with increasing one article in Google Scholar and the citation number of Scopus and WOS is increased 2% and 3% with the increase of one article in Google Scholar, respectively.
The results show that there is a direct and strong relationship among the number of publications, citations and h-index in three databases. Negative binomial model can be used as a proper model for the number of publications and zero-inflation negative binomial model can be applied as an appropriate model for the number of citations in WoS and Scopus, too.

Scientometic evaluation is one of the important issues in the evaluation of research activities. In this study, scientific outcomes of pharmaceutical chemistry departments at pharmacy faculties in Iran have been compared with each other.
Material and The number of published articles, citations and total H-indices, co-authors, the percentage of articles in different subject areas of medicinal chemistry departments of Tabriz, Tehran, Shahid beheshti, Mashhad, Isfahan, Shiraz, Zanjan, Mazandaran, Kerman, Kermanshah, Urmia, Ardabil, Hamadan, Guilan and Yazd affiliated with the corresponding faculty of pharmacy were collected from Scopus database as a search engine and the findings were compared with each other.
A good correlation between all of the studied parameters among pharmaceutical chemistry departments of pharmacy faculties is observed. However, significant differences between the percentages of the articles in subject areas of various faculties were identified.
Overall, pharmaceutical chemistry departments of Tehran, Tabriz and Mazandaran have top research outcomes in comparison with other investigated departments.

There are some indices for scientometrics including counting the number of scientific publications and the number of citations to these publications. Hirsch Index(H-index)is widely accepted for scientometrics because it has both qualitative and quantitative components for scientometrics. This study evaluated the scientific outputs of faculty members of Rafsanjan University of Medical Sciences through measuring the H-index.
In this cross- sectional study the publications of 160 faculty members of Rafsanjan medical science university were evaluated. Number of articles and citations to these articles were collected through the Web of science and Scopus databases. Data were analyzed using one-way repeated measures ANOVA, followed by Tukey's multiple comparisons test & t-test.
The H-index mean values in this university were 1.27±0.2 (evaluated through Scopus database) and 0.9±0.1 (evaluated through Web of Science database).This index was higher for medical school faculty members compared to the other schools (p These findings demonstrated that H-index value for faculty members in this university was lower than the international standard. In addition, the H-index value was lower in Nursing and Midwifery faculty and also in Dentistry faculty compared to the medical faculty.It is recommended to improve H-index of faculty members of these schools by planning training courses in scientific researches and publications.

Todays, scientometric indeces are being used in quantitative measurement of sciences at the national and international levels to compare the scientific performance. In the current study, citation analysis of scientific outputs of the Qom University of Medical Sciences, were evaluated until the first half of 2014. In this descriptive cross-sectional study, all scientific records attributed to the Qom University of Medical Sciences, were evaluated for 10 years. The required Data were obtained by searching the Scopus scientific database. Data were analyzed by descriptive statistics and prioritized according to the year of publication, citation, self-citation, and Hirsch Index (HI). Since the beginning of July 2014, only 252 scientific records were indexed in the Scopus database by 149 authors affiliated to the Qom University of Medical Sciences, so that the university’s H Index was 12 and it acheived the 41st rank among 70 scientific academic centers related to medical field. There were four different affiliations of the university in Scopus. An increasing trend was observed in the number of scientific documents, citations, and self citation in the scientific records of the university. According to the results of this study, the growth trend of scientific records of the University has been an increasing trend with rapid slope, which of course this speed will decrease according to estimate of the first half of 2014. Only a few faculty members of the university contributed to knowledge production in citation databases. It seems that increase in the ability of researchers is necessary to promote the level of the university.

One of the scientific members of faculties’ gradation criteria is evaluation of their publications’ quantity and quality. H-index, G-index, and m parameter are used recently. This paper was aimed to assessment faculties’ publications’ quantity and quality, and citation ranking of IUMS’ faculties by using those indices.

This is a descriptive- applied study, used checklist, and direct observation as data collecting tools. Research population are 681 IUMS’ faculties; publications indexed in Web of Science, Scopus, Google Scholar and Iranian Science Citation Index (ISCI) up to the end of 2008. The number of professors, associate professors, assistant professors, and lecturers were 32, 95, 284, and 225, respectively. The great number of studied subjects belongs to Medicine faculty.

Totally, research population has been published 4276 papers, with 8291 citations for these papers. More than half of faculties (56%) has been gained h=0. The two highest h-index and g-index belong to Medicine Faculty’s Nephrology Professor (h-index=16; g-index=16) and Microbiology professor (h-index=13; g-index=16); and no one did gain h- index extent prognosticated by its presenter.

By consideration of international h-index and g- index and M parameter obtained in medicine and biology, IUMS’ faculties are really poor in those indices, and even their publication are very low. National and international scientific cooperation, interaction with other researchers, publications’ language, and international accessibility are suggested to improve h-index and supplementary indices.

Using Hirsch index as an important tool to describe the scientific outputs of researchers has caused some authors to increase their self-imposed parameters, increase, citing themselves. Therefore it is necessary to consider the effect of self-citation on Hirsch index for every author to have better measuring on the quality of researchers scientific production.

This research is descriptive method of citation analysis in general and specifically self-citation analysis. The study, are Iranian prolific authors in the field of medicine that have at least 30 documents indexed in Web of Science database between 2004 to 2006. Citations following up was studied till December 2010.Results was analysis using Excel software version 2007.

The average self-citation observed between prolific authors in medical field was 25/89 percent. Hirsch index for 30/77 percent of authors had changed considerably. The authors rating scheme based on Hirsch index was done after removing self - citation so that 38/46 percent of authors decreased to lower level.Discussion and

Considering that 10 to 30 percent of self-citation can be normal and justified, the status of self-citatin of Iranian prolific authors in medical field is desirable. Also, lower rates of self - citation of these authors doesnot affect Hirsch index.