SCI (Science Citation Index), EI (Engineering Index) and ISTP (Science and Technology Conference Index) are three world-famous retrieval systems for scientific documents, which are internationally recognized as the main retrieval tools for scientific statistics and scientific evaluation, among which SCI is the most important.
SCI) is a citation database founded and published by institute for scientific information (ISI) 196 1, which covers life science, clinical medicine, physical chemistry, agriculture, biology, veterinary medicine, engineering technology and other comprehensive retrieval publications, especially reflecting the academic level of natural science research. It is the most famous of the three retrieval systems in the world at present, among which life science, medicine, chemistry and physics account for the largest proportion, and the collection scope is the important international journals of that year. In particular, its citation index shows unique scientific reference value and occupies an important position in academic circles. Many countries and regions regard the papers collected and cited by SCI as an important index to evaluate academic level. Judging from SCI's strict principles of journal selection and strict expert evaluation system, it has certain objectivity and truly reflects the level and quality of the paper. According to the inclusion and citation of SCI, we 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. SCI takes the current content as the data source. At present, there are more than 5,000 periodicals in the natural science database, including 1350 in the life science series. The engineering and computer technology series includes 1030 kinds; 990 kinds of clinical drugs were collected; 950 kinds of agricultural and biological environmental sciences; The series of physics, chemistry and earth sciences includes 900 periodicals. The coverage of each version is different:
Number of periodicals included in the publication cycle of edition (and proper name)
There are 3,500 printed (SCI) bimonthly publications.
SciSearch updates 5600 articles every week.
The CD-ROM version (with abstract) (SCICDE) is updated 3,500 times a month (the same as the printed version).
The online version (SCIExpanded) updates 5600 kinds every week (the same as the online version).
EngineeringIndex (EI), 1884, published by American engineering information company, reports periodicals, conference papers, scientific and technological reports and other documents of various disciplines of engineering technology.
Literature sources included in the publication cycle of editions (and proper names)
There are 2600 bimonthly editions of EI Compendex.
EI Compendex website is updated 5,600 times every quarter.
Update 5000 kinds of CDs every week (with abstract).
EI compendex Web consists of two parts: EI Compendex and EI pageone.
Scientific index &; TechnicalProceedings (ISTP), also published by ISI, was founded in 1978, reporting the conference papers of the annual scientific and technological conferences held around the world.
Literature sources included in the publication cycle of editions (and proper names)
ISTP monthly reports more than 4,700 kinds of meeting minutes every year.
The quarterly update of the optical disc version (ISTP) reports more than 65,438+00,000 kinds of meeting records every year.
The weekly update of the online version (WOSP-S/T) is the same as the CD version.