The scientific citation index is a periodical literature retrieval tool put into use in 1960 in institute for scientific information, USA, and it is also one of the most famous retrieval publications. The contents of the periodicals mainly involve basic scientific research fields such as mathematics, science, culture, agriculture, forestry, medicine and biology, and the selected publications come from more than 40 countries.
2、SSCI
SCI's companion, Social Science Citation Index, was also founded by institute for scientific information. It is a large-scale retrieval tool, which can be used to analyze the number of social science papers in different countries and regions. The biggest difference is that SCI is partial to science, while SSCI is partial to liberal arts, focusing on humanities and social sciences.
3、CSSCI
Chinese social science citation index is called "Chinese social science citation index" in English, abbreviated as CSSCI. The database developed by China Social Science Research and Evaluation Center of Nanjing University is used to retrieve the essays and literature citations in the field of social sciences in China, which is a landmark project in the field of humanities and social sciences evaluation in China.
Taking the news and publication volume of Encyclopedia of China as the representative, the periodicals are divided into four categories:
1, a general periodical, emphasizes knowledge and interest, and has a wide readership, such as People's Pictorial and Popular Movies in China, American Times and Reader's Digest, etc.
2, academic journals, mainly publishing academic papers, research reports, comments and other articles, focusing on professional workers;
3. Industry periodicals, mainly reporting products, market conditions, management progress and trends of all walks of life, such as motorcycle information in China, furniture, Japanese office equipment and products.
4. Search periodicals, such as China National Newspaper Index, National New Bibliography and American Chemical Abstracts.