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Scopus is a scientific abstract and citation database, launched by the academic publisher Elsevier as a competitor to older Web of Science in 2004. [1] An ensuing competition between the two databases has been characterized as "intense" and is considered to significantly benefit their users in terms of continuous improvent in coverage, search/analysis capabilities, but not in price.
Scopus is the world's largest abstract and citation database of peer-reviewed research literature. It contains over 20,500 titles from more than 5,000 international publishers. While it is a subscription product, authors can review and update their profiles via ORCID.org or by first searching for their profile at the free Scopus author lookup page.
Based on data from Scopus, this indicators explore about 8 million records of scientists’ citations in order to rank a subset of 200,000 most-cited authors across all scientific fields. This is commonly referred to as Stanford ranking of the 2% best scientists.
Scirus & Google Scholar are, but not Scopus, a database that incorporates Scirus's web search engine. Some are simply bibliographic databases or database aggregators, including CSA Some are combination bibliographic databases/full text databases, like J-gate & DOAJ
At the end of the process (December 2017), close to 5,000 journals, out of the 11,600 indexed in May 2016, had been removed from their database, in majority for failure to reapply. [ 4 ] [ 5 ] [ 6 ] Notwithstanding the substantial cleanup, the number of journals included in DOAJ has continued to grow, to reach 14,299 as of 3 March 2020. [ 7 ]
ScienceDirect is a searcheable web-based bibliographic database, which provides access to full texts of scientific and medical publications of the Dutch publisher Elsevier as well of several small academic publishers. It hosts over 18 million publons from more than 4,000 academic journals and 30,000 e-books.
In any given year, the CiteScore of a journal is the number of citations, received in that year and in previous three years, for documents published in the journal during the total period (four years), divided by the total number of published documents (articles, reviews, conference papers, book chapters, and data papers) in the journal during the same four-year period: [3]
Scopus may refer to: Scopus, a bibliographic database for science; Scopus Technology, Inc., a former producer of server software founded in 1991 in Emeryville, CA, then acquired by Siebel Systems itself acquired by Oracle Corporation. Scopus, a journal of East Africa ornithology; Scopus, the sole genus in the Scopidae bird family