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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.
Scientific citable documents counts in this table are from journals classified by Scopus. [1] Rank Country Numbers of scientific ... Search. Toggle the table of contents.
The same is true for more comprehensive databases such as Ulrich's Web which lists as many as 70,000 journals, [22] while Scopus has fewer than 50% of these, and WoS has fewer than 25%. [12] While Scopus is larger and geographically broader than WoS, it still only covers a fraction of journal publishing outside North America and Europe.
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]
The indexing database covers more than 9,200 notable and significant journals, across 178 disciplines, from 1900 to the present. These are alternatively described as the world's leading journals of science and technology , because of a rigorous selection process.