Because there are many institutions and colleges that grade periodicals, the starting point, purpose and standard of grading are different, and the titles of periodical grading are also varied.
It should be pointed out that the sponsors of periodicals pay more and more attention to the results of periodical classification, and the good results obtained in classification are often marked in the prominent position of periodicals, and the complexity and diversity of titles make it difficult for readers to distinguish.
For example, "excellent journals" may be the highest level in one classification, but may be the second or third level in another classification. The most typical example is the National University Social Science Journal Award. There are two levels superimposed on "Excellent Journals", namely "Top 100" (the second level) and "Double Front 10" (the first level).
Extended data:
Periodical quality grading
Grading by quality is a kind of grading with the most academic value, which is mainly manifested in winning prizes or being selected into a certain catalogue. After the introduction of core journal theory into China, information science finally has a more scientific and reasonable new method to replace the traditional hierarchical classification.
1988, Lanzhou university imitates the method of "journal citation report" in Science Citation Index, selects 10 natural science journals with the highest academic level published in China as the basis, and compiles citation index cards with references published in various journals every year, and distributes them to a book named "China Natural Science Citation Index".
And selected 104 Chinese natural science core journals, which is the first authoritative and academic natural science core journal in China.
1990 According to the main foreign retrieval tools, the Document Information Center of China Academy of Sciences listed10 China sci-tech periodicals and 104 periodicals proposed by Lanzhou University, and also included journals of universities in China (excluding Hong Kong and Taiwan) listed in major projects announced by the National Natural Science Foundation of China, and 286 sci-tech core periodicals were proposed by experts.
199 1 year, the research group of "Statistics and Analysis of Scientific Papers in China" of China Institute of Science and Technology Information re-selected 1230 as the statistical source of China's "Academic List". The classification of these influential periodicals is limited to natural science, which shows that on the one hand, the classification of natural science periodicals is ahead of social science in theory and practice, on the other hand, the quality classification of periodicals, which began in the late 1980s, still lacks comprehensiveness and systematicness of disciplines.
Baidu encyclopedia-periodical grading
Baidu Encyclopedia-Three Journals