The Science Citation Index Expanded – previously entitled Science Citation Index – is a
citation index
A citation index is a kind of bibliographic index, an index of citations between publications, allowing the user to easily establish which later documents cite which earlier documents. A form of citation index is first found in 12th-century Hebre ...
originally produced by the
Institute for Scientific Information
The Institute for Scientific Information (ISI) was an academic publishing service, founded by Eugene Garfield in Philadelphia in 1956. ISI offered scientometric and bibliographic database services. Its specialty was citation indexing and analysi ...
(ISI) and created by
Eugene Garfield
Eugene Eli Garfield (September 16, 1925 – February 26, 2017) was an American linguist and businessman, one of the founders of bibliometrics and scientometrics. He helped to create ''Current Contents'', ''Science Citation Index'' (SCI), ''Journ ...
. It was officially launched in 1964 and is now owned by
Clarivate
Clarivate Plc is a British-American publicly traded analytics company that operates a collection of subscription-based services, in the areas of bibliometrics and scientometrics; business / market intelligence, and competitive profiling for ph ...
(previously the Intellectual Property and Science business of
Thomson Reuters
Thomson Reuters Corporation ( ) is a Canadian multinational media conglomerate. The company was founded in Toronto, Ontario, Canada, where it is headquartered at the Bay Adelaide Centre.
Thomson Reuters was created by the Thomson Corpora ...
).
[
] 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
Science is a systematic endeavor that Scientific method, builds and organizes knowledge in the form of Testability, testable explanations and predictions about the universe.
Science may be as old as the human species, and some of the earli ...
and
technology
Technology is the application of knowledge to reach practical goals in a specifiable and Reproducibility, reproducible way. The word ''technology'' may also mean the product of such an endeavor. The use of technology is widely prevalent in me ...
, because of a rigorous selection process.
Accessibility
The index is available online within
Web of Science,
[
] as part of its Core Collection (there are also CD and printed editions, covering a smaller number of journals). The database allows researchers to search through over 53 million records from thousands of academic journals that were published by publishers from around the world.
Chemistry Citation Index
Clarivate previously marketed several subsets of this database, termed "Specialty Citation Indexes",
[
] such as the Neuroscience Citation Index
[
] and the Chemistry Citation Index, however these databases are no longer actively maintained.
The Chemistry Citation Index was first introduced by Eugene Garfield, a chemist by training. His original "search examples were based on
isexperience as a chemist".
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. Additional information was provided from articles selected from 4,000 other journals. All chemistry subdisciplines were covered: organic, inorganic, analytical, physical chemistry, polymer, computational, organometallic, materials chemistry, and electrochemistry.
By 2002, the core journal coverage increased to 500 and related article coverage increased to 8,000 other journals.
One 1980 study reported the overall citation indexing benefits for chemistry, examining the use of citations as a tool for the study of the sociology of chemistry and illustrating the use of citation data to "observe" chemistry subfields over time.
See also
*
Arts and Humanities Citation Index, which covers 1,130 journals, beginning with 1975.
*
Emerging Sources Citation Index
The Emerging Sources Citation Index (ESCI) is a citation index produced since 2015 by Thomson Reuters, and now by Clarivate. According to the publisher, the index includes "peer-reviewed publications of regional importance and in emerging scientifi ...
*
Google Scholar
*
Impact factor
The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as ...
*
List of academic databases and search engines
*
Social Sciences Citation Index, which covers 1,700 journals, beginning with 1956.
References
Further reading
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External links
{{external links, date=June 2022
Introduction to SCIEMaster journal listChemical Information Sources/ Author and Citation Searches on WikiBooks.
Thomson Reuters.
Chemistry Citation Index Chinweb.
Citation indices
Online databases
Clarivate
1964 establishments