"Science Citation index" (science citation
Index (SCI) is a citation database founded and published by institute for scientific information (ISI)1961+0, covering life science, clinical medicine, physical chemistry, agriculture, biology, veterinary medicine and engineering.
Technology and other comprehensive retrieval publications, especially those reflecting the academic level of natural science research, are the three most famous retrieval systems in the world at present, among which life science, medicine, chemistry and physics account for the largest proportion.
Large, the scope of collection was an important international journal in that year, especially its citation index showed unique scientific reference value and occupied an important position in the academic community. Many countries and regions use papers collected and cited by SCI.
SCI is an important index to evaluate academic level. Its strict principles of selecting journals and strict expert evaluation system show that it is objective and truly reflects the level and quality of papers.
The inclusion and citation of SCI can reflect the development of academic level from one side, especially the annual ranking of SCI papers has become a very important standard to judge the scientific research level of a school. Science (same as science)
Log content (current
As a data source, there are currently more than 5,000 periodicals in the natural science database, including 1350 in the life science series; Engineering and computer technology set
1030 species; 990 kinds of clinical drugs were collected; 950 kinds of agricultural and biological environmental sciences; Physics, chemistry and earth sciences include 900 periodicals. The scope of each version is different:
Engineering Index (EI) was founded in 1884, and is an American engineering information company (EI).
information
Inc .)。 EI is published every month 1 issue, with a summary of10.3 million to10.4 million; Each issue is accompanied by a subject index and an author index; Annual magazine and annual magazine are also published every year.
Index, the annual index also increased the author unit index. Publishing forms include print (periodical form), electronic version (tape) and microfilm. EI is 15 language, which comes from the engineering technology of dozens of countries and regions in the world.
More than 3,500 periodicals and 65,438+0,000 publications, such as conference records, scientific reports, standards, books, etc. The number of reported documents in the year exceeds 1.6 million. The collected literature covers almost all fields of engineering technology, such as electric power, electrician,
Electronics, automatic control, mining and metallurgy, metal technology, machinery manufacturing, civil engineering, water conservancy, etc. It has the characteristics of strong comprehensiveness, wide data sources, wide geographical coverage, large amount of reports, high quality and strong authority.
Scientific index &; technical
Journal of ISTP was founded in 1978 and edited and published by institute for scientific information, USA. The index includes life sciences, physical and chemical sciences, agriculture, biology and environmental sciences,
Conference documents of engineering technology and applied science, including congresses, symposiums, seminars and conferences. Among them, the literature of engineering technology and applied science accounts for about 35%, and others involve basic disciplines and
So is SCI.
The number of papers collected by ISTP is related to the number of important international academic conferences attended by scientific and technical personnel or the number of papers submitted for publication. Papers published by China scientific and technical personnel at international conferences held abroad account for 64.44% of the total papers included.
exist
ISTP、EI、
Among the three retrieval systems of SCI, SCI can best reflect the research level and paper quality of basic disciplines. The retrieval system contains more comprehensive sci-tech periodicals, which can be said to be the essence of high-quality excellent papers in various disciplines.
Retrieval system has always been the center and focus of the world's scientific and technological circles, and ISTP and EI have relatively loose evaluation on the quality standards of scientific papers and periodicals.