The core of Peking University refers to the academic periodical literature resources with certain academic value and scientific research reference value edited and published by Peking University Press. These literature resources, including journals and papers of various disciplines, were selected after strict evaluation and screening by the core expert group of Peking University. In academic research, the core journals and papers of Peking University are often used. The following is the explanation of the English abbreviation of Peking University Core:

1.cssci: Citation Index of Chinese Social Sciences. This is the citation index of academic journals in various fields of social sciences in China, including politics, law, economics, education, management, journalism and communication, etc.

2.CAJC: full-text database of academic journals in China and full-text database of academic journals in China. This is the full-text database of academic journals published by Peking University Publishing House, which includes academic journals in natural science, social science, humanities and other disciplines.

3.CSCD: China Science Citation Database, China Science Citation Database. This is a citation database of China's scientific literature, mainly including natural science, engineering technology, agricultural science and other fields.

4.CNKI: China National Knowledge Infrastructure, China Knowledge Network. This is a comprehensive academic database platform covering academic journals, doctoral dissertations and conference papers, including core journals and papers in Peking University.

The above are some explanations of the core English abbreviations of Peking University, which are important academic journal literature resources in academic research.