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What are the three famous retrieval tools in the world?
SCI (scientific citation index), EI (engineering index), ISTP (scientific conference proceedings index).

1, SCI (scientific citation index)

SCI was founded on 1957 by institute for scientific information, Philadelphia, USA. Is a citation database created and published by institute for scientific information (ISI)1961+0.

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.

2. Engineering index

Engineering Index (EI) is the oldest large-scale comprehensive retrieval tool, which was founded by the American Federation of Engineers in 1884. EI enjoys a high reputation in the academic, engineering and information circles all over the world, and it is recognized as an important retrieval tool by the scientific and technological circles.

3.ISTP (index of scientific and technological conference proceedings)

Index of scientific conference proceedings (index ts scientific &; TechnicalProceedings (ISTP) was founded in 1978 and edited and published by institute for scientific information, USA.

The index includes conference documents of life science, physical and chemical science, agriculture, biology and environmental science, engineering technology and applied science, including general conferences, symposiums, research conferences, seminars and conferences.

Among them, the literature of engineering technology and applied science accounts for about 35%, and other related disciplines are basically the same as SCI.

Extended data:

Contents included:

I. SCI (Scientific Citation Index)

The periodicals collected by SCI mainly involve basic scientific research fields such as mathematics, science, chemistry, agriculture, forestry, medicine and biology. The selected journals come from more than 40 countries with more than 50 languages, among which the main countries are the United States, Britain, the Netherlands, Germany, Russia, France, Japan and Canada, and some China (including Hong Kong, Macao and Taiwan) journals are also included.

Two. Engineering index

Mechanical engineering, electromechanical engineering, ship engineering, manufacturing technology, etc. ;

Mining, metallurgy, material engineering, metal materials, non-ferrous metals, ceramics, plastics and polymer engineering.

Civil engineering, building engineering, structural engineering, ocean engineering, water conservancy engineering, etc. ;

Three. ISTP (index of scientific and technological proceedings)

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.

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