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Scopus is Elsevier’s abstract and citation database launched in 2004. Scopus covers nearly 36,377 titles (22,794 active titles and 13,583 inactive titles) from approximately 11,678 publishers, of which 34,346 are peer-reviewed journals in top-level subject fields: life sciences, social sciences, physical sciences and health sciences. It covers three types of sources: book series, journals, and trade journals. All journals covered in the Scopus database are reviewed for sufficiently high quality each year according to four types of numerical quality measure for each title; those are h-Index, CiteScore, SJR (SCImago Journal Rank) and SNIP (Source Normalized Impact per Paper). Searches in Scopus also incorporate searches of patent databases.
|Disciplines||Life sciences; social sciences; physical sciences; health sciences|
|Record depth||41,462 indexed titles (2021)|
|Format coverage||csv, BibText, ASCII, RIS|
|No. of records||82.4 million|
Comparing ease of use and coverage of Scopus and the Web of Science (WOS), a 2006 study concluded that "Scopus is easy to navigate, even for the novice user. ... The ability to search both forward and backward from a particular citation would be very helpful to the researcher. The multidisciplinary aspect allows the researcher to easily search outside of his discipline" and "One advantage of WOS over Scopus is the depth of coverage, with the full WOS database going back to 1945 and Scopus going back to 1966. However, Scopus and WOS complement each other as neither resource is all inclusive."
Scopus also offers author profiles which cover affiliations, number of publications and their bibliographic data, references, and details on the number of citations each published document has received. It has alerting features that allows registered users to track changes to a profile and a facility to calculate authors' h-index. In 2016, a free website, Scopus CiteScore, was introduced. It provides citation data for all 25,000+ active titles such as journals, conference proceedings and books in Scopus and provides an alternative to the impact factor.
Content selection and advisory board
Since Elsevier is the owner of Scopus and is also one of the main international publishers of scientific journals, an independent and international Scopus Content Selection and Advisory Board was established in 2009 to prevent a potential conflict of interest in the choice of journals to be included in the database and to maintain an open and transparent content coverage policy, regardless of publisher. The board consists of scientists and subject librarians.
Content selection and advisory board Evaluation and Re-evaluation policy
CSAB team is responsible for inclusion and exclusion of different titles on Scopus. Since 2004, they have included 41525 and excluded 688 titles  The re-evaluation policy is claimed to be based on four criteria of Publication Concern, Under Performance, Outlier Performance and Continuous curation. Since 2016, the CSAB has re-evaluated 990 titles published by 539 different publishers leading to 536 titles discontinued for indexing. Peer Review is one of the most important criteria that Scopus team uses for their inclusion/exclusion of journals in Scopus. Simen Andreas Ådnøy Ellingsen questioned the quality of MDPI's peer review based on his experiences as a reviewer for the publisher. He wrote that he had been only given one week to review a paper, that he recommended rejection, that the paper was then simply published without further comment, and that he never was in contact with any editor. In August 2018, 10 senior editors (including the editor-in-chief) of the journal Nutrients resigned, alleging that MDPI forced the replacement of the editor-in-chief because of his high editorial standards and for resisting pressure to "accept manuscripts of mediocre quality and importance." Despite these facts, CSAB team has never discontinued MDPI journals from Scopus.
SCImago Journal Rank
According to the Scimago Journal Rankings, as of 2016, Nature had the highest h-index, at 1011, and CA - A Cancer Journal for Clinicians had the highest SJR of 39.285, and CiteScore 2016 (89.23 in the 99th percentile). Scimagojr.com provides country ranking based on Total Published Documents, Citable documents, Citations, Self-Citations, Citations per Document and h-index. As per this website, as of 2019, the United States (h-index : 2222) was in first place, the United Kingdom (h-index : 1373) was in the second place and Germany (h-index : 1203) was in third place based on national h-index.
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- "Scopus Content Overview: Content Policy and Selection". Scopus Info. Elsevier. Retrieved 4 September 2013.
- Ellingsen, Simen Andreas Ådnøy (21 October 2019). "Faren med kommersiell Open Access" [The danger of commercial open access]. Universitetsavisa.
- de Vrieze, Jop (2018). "Open-access journal editors resign after alleged pressure to publish mediocre papers". Science. doi:10.1126/science.aav3129. Archived from the original on 24 December 2018.
- "Nature". www.scimagojr.com. Retrieved 4 July 2018.
- "CA - A Cancer Journal for Clinicians". www.scimagojr.com.
- "Scimago Journal & Country Rank".