1, SCI, which is the scientific citation index, was founded by institute for scientific information, USA, and contains the authors, titles, source journals, abstracts and keywords of documents. It can not only evaluate the academic value of articles from the perspective of literature citation, but also establish a reference network for research topics quickly and conveniently.
SCI was established in 196 1. After 40 years of development and improvement, it has developed from a single printing type to a powerful electronic, integrated and networked large-scale multidisciplinary comprehensive retrieval system. -
2.EI is the abbreviation of American Engineering Index. EI was founded in 1884 and published by engineering information company.
EI is a comprehensive retrieval tool in the field of engineering technology, covering such subjects as electricity, automatic control, power, machinery, instrumentation, material science, agriculture, bioengineering, mathematics, medicine, chemical engineering, food, computer, energy, geology and environment.
3.ISTP is the abbreviation of Journal of Science Index and Technology, and it is one of the two databases of Journal of Science in institute for scientific information (ISTP and ISSHP).
Specialized in collecting conference documents of various important international natural science and technology conferences, including general conferences, symposiums, research conferences, seminars, conferences, etc. The subjects involved are basically the same as SCI.
Importance:
In the international scientific community, how to correctly evaluate the achievements of basic scientific research has attracted more and more attention. However, the number of scientific papers collected by SCI and SSCI is regarded as an important evaluation index to measure a country's basic scientific research level, scientific strength and the number of scientific papers.
Among the three retrieval systems ISTP, EI and 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. This retrieval system has always been the center and focus of the world's scientific and technological circles.
Reference to the above content: Baidu Encyclopedia-Three major searches