Background: Surveying valuable and most recent information from internet, has become vital for researchers and scholars, because every day, thousands and perhaps millions of scientific works are brought out as digital resources which represented by internet and researchers can’t ignore this great resource to find related documents for their literature search, which may not be found in any library. With regard to variety of documents presented on the internet, search engines are one of the most effective search tools for finding information. Objectives: The aim of this study is to evaluate the three criteria, recall, preciseness and importance of the four search engines which are PubMed, Science Direct, Google Scholar and federated search of Iranian National Medical Digital Library in addiction (prevention and treatment) to select the most effective search engine for offering the best literature research. Materials and Methods: This research was a cross-sectional study by which four popular search engines in medical sciences were evaluated. To select keywords, medical subject heading (Mesh) was used. We entered given keywords in the search engines and after searching, 10 first entries were evaluated. Direct observation was used as a mean for data collection and they were analyzed by descriptive statistics (number, percent number and mean) and inferential statistics, One way analysis of variance (ANOVA) and post hoc Tukey in Spss. 15 statistical software. P Value < 0.05 was considered statistically significant. Results: Results have shown that the search engines had different operations with regard to the evaluated criteria. Since P Value was 0.004 < 0.05 for preciseness and was 0.002 < 0.05 for importance, it shows significant difference among search engines. PubMed, Science Direct and Google Scholar were the best in recall, preciseness and importance respectively. Conclusions: As literature research is one of the most important stages of research, it\'s better for researchers, especially Substance-Related Disorders scholars to use different search engines with the best recall, preciseness and importance in that subject field to reach desirable results while searching and they don’t depend on just one search engine.

Resveratrol Protects against Oxidative Stress-Induced Endothelial Dysfunction in Type II Diabetes

Comparison of Four Search Engines and their efficacy With Emphasis on Literature Research in Addiction (Prevention and Treatment).

Background: Journal articles published by Iranian dental school faculty members have followed an upward trend Since 2000, based on: (1) the global growth rate; (2) the increase in the number of country’s dental schools and their relatively higher number of faculty members; and (3) the health ministry’s emphasis on research and scientific publications. Hence, it is important to keep ourselves up to date about the trend of scientific articles published by Iranian dental schools. Objectives: This study aimed to extract the number and quantitative value of articles authored by faculty members of Iranian dental schools that are indexed in three databases of SCOPUS, PubMed, and the Web of Science (WoS/ISI) from 2015 to 2019. Methods: A five-year cross-sectional study was conducted on the above-mentioned databases, using a similar strategy for all databases. Words “Iran” and “dent*” were searched in affiliations. The obtained results were investigated in-depth. The details of search results were checked out one by one. Only those articles with at least one author genuinely affiliated to an Iranian dental school were included for further assessment. The “number of articles” authored by at least one author and those with the “first author” affiliated to an Iranian dental school were counted. Then, the “quantitative value” or share of each author was calculated by dividing one by the number of authors of the article. The three variables were compared among databases, dental schools, and study years. Results: A total of 3922, 2473, and 2345 articles were retrieved from SCOPUS, PubMed, and WoS, respectively. Concerning SCOPUS and WoS databased, all three study variables had an increasing trend from 2015 to 2018 but decreased in 2019. In PubMed, however, the decline started from the beginning of the study period. Conclusions: The observed decline in the number of scientific papers produced or published at the end of the study period is worrying. The novel variable of “quantitative value” that was calculated in this study can be regarded as an appropriate and feasible indicator to determine the number of scientific papers published by individuals, dental schools, and the whole country’s dental research society, compared to other variables. Policymakers should rethink facilitating publication in accredited journals, especially those indexed in PubMed.

Resveratrol Protects against Oxidative Stress-Induced Endothelial Dysfunction in Type II Diabetes

Citations

Comparison of Four Search Engines and their efficacy With Emphasis on Literature Research in Addiction (Prevention and Treatment).

Scientific Paper Production by Iranian Dental Schools Between 2015 and 2019

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