First, the American Science Citation Index (SCl) (one of the four retrieval journals).
"SCI" SCI reveals the relationship between citation and citation between science and technology, with a wide range of collection, and is a large-scale retrieval publication for consulting citation information in the world at present; It is a large-scale multidisciplinary comprehensive retrieval system. 1999 includes 3579 important journals from all over the world.
SCI has adopted 17 Chinese periodicals, with 1982 having 13, and has been declining year by year since then, with only 6 1994 and 1995. Among the periodicals 1995 included by SCI, Chinese periodicals only account for 0. Since l997, the number of Chinese periodicals collected by SCI has been increasing. 1999 SCI has collected 13 Chinese periodicals, namely China Science Series A, China Science Series B, China Science Series C, China Science Series D and China Science Series E.
Chinese periodicals that have been included in SCI but are not included at present (excluding those included in the expanded version of SCI) include: Journal of Geology, Journal of Geophysics, Journal of Geological Science, Journal of Zoology, Journal of Entomology, Journal of Vertebrate Paleontology and Paleoanthropology, Scientific Research Report, and China Yearbook of Physics and Mathematics Series B.
Although 1999 SCI contains 13 Chinese periodicals, China Science has been increased from 2 volumes to 5 volumes, so the actual number of periodicals is still less than 1982.
What I mentioned above is the core part of SCI. If we consider the extension of its more than 5,000 publications, there are more than 50 publications in China.
As the SCI system is an important international source for statistical analysis of our papers, especially it shows the achievements of basic and applied basic research in China, the number of China periodicals included in this system is a matter of great concern to us. Compared with 1997 in 1998, the number of SCI papers published in China has increased from 17.0% to 18.5%, and we hope this ratio can be further improved.
II. American Engineering Index (EI) (one of the four retrieval journals)
Ei is a comprehensive retrieval publication with great influence in the field of engineering technology. The text is arranged in alphabetical order according to the subject words for easy retrieval. It is a large-scale retrieval system based on engineering journals and conference documents, with an annual report of more than 654.38+10,000. About 2000 journals were selected, including core journals 1000, and all papers were included. The other 65,438+0,000 non-core journals were only selected.
The number of periodicals collected by EI in China has changed greatly. There are only 40 kinds of 1988, but up to 1998, there are 90 kinds, accounting for about 4% of the total selected periodicals of EI.
For the extended version of Ei, the first page of EI. There are 156 periodicals in China.
EI is also the unified source of China's international papers, which mainly shows the international status of China's engineering research achievements. In recent years, the number of Chinese periodicals collected by EI is still relatively large. The number of EI papers produced by sci-tech periodicals in China accounts for nearly 50% of the total EI papers in China. We hope to keep this ratio or increase it.
Three. Index of scientific conference proceedings; Technical progress (ISTP) (one of the four retrieval journals)
The proceedings of scientific and technological conferences are an important part of academic literature, and many innovative ideas, concepts or experiments often appear in the proceedings first. Science and technology index. Technical Proceeding (ISTP) is an index database of conference proceedings published by ISI (American Institute of Science and Technology Information), which is listed as one of the "four major literature indexes". Now, ISTP has recently launched a web version, namely ISI Proceedings? -technology edition. ISI Proceedings is the only multidisciplinary database that can search the literature information and author's abstracts (provided since 1997) of papers published at international famous conferences, symposiums and seminars through the Web. Isi Proceedings-Science &; The science and technology edition (science and technology section, namely ISTP) provides the records of 2 million conference papers of about 1990 meetings.
Four. ISR Science Review Index (one of the four retrieval journals).
ISR Scientific Review Index to Scientific Reviews, also published by ISI, is a semi-annual publication, which contains more than 200 review publications and more than 3,000 periodical review documents every year. The scope of disciplines is basically the same as ScI. In addition to SCI, EI and ISTP, the four retrieval tools usually include ISR, and only printed copies are issued at present.
hope this helps ...