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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.
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.
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.
Rank Country Numbers of scientific publications (2020) Total Per million population 1 China 744042 527 2 United States 624554 1875 3 United Kingdom 198500 2959 4 India
His original "search examples were based on [his] experience as a chemist". [17] In 1992, an electronic and print form of the index was derived from a core of 330 chemistry journals, within which all areas were covered.
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]
HAL (short for Hyper Articles en Ligne) [2] is an open archive where authors can deposit scholarly documents from all academic fields.. Documents in HAL are uploaded either by one of the authors with the consent of the others or by an authorized person on their behalf. [3]
With the ability to conduct a full text search widely available, many people have come to rely on their own expertise in conducting information searches and full text search has become very popular. Subject indexing and its experts, professional indexers, catalogers , and librarians , remains crucial to information organization and retrieval.