Scientific citation database is a 1 large citation database developed by Wu Shulian, covering all non-confidential disciplines such as natural science, engineering technology, agriculture and forestry science, medical science, humanities science and social science.
The theoretical basis of SCD is based on the following three aspects:
1, Bradford's Bradford's law is based on the "law of document concentration and dispersion".
2.E.Garfield's paper Citation Index Used in Science.
3. Wu Shulian thinks that "researchers from different disciplines have the same innovation ability on average".
Taking the news and publication volume of Encyclopedia of China as the representative, the periodicals are divided into four categories:
(1) General periodicals, which emphasize knowledge and interest, have a wide readership, such as People's Pictorial and Popular Movies in China, Time and Reader's Digest in the United States, etc.
(2) Academic journals, which mainly publish academic papers, research reports, summaries and other articles, are mainly aimed at professional workers.
(3) Industry periodicals, which mainly report the products, market conditions, management progress and trends of all walks of life, such as motorcycle information in China, Japanese furniture, office equipment and products.
(4) Search periodicals, such as national newspaper index, national new bibliography, American chemical abstracts, etc.