Sci is the abbreviation of American Science Citation Index. This database mainly contains the world's top core journals in the fields of mathematics, science, chemistry, agriculture, forestry, life sciences, astronomy, geography and environment. The level of published papers is naturally international, and most of the required papers are in English. Many countries and regions judge a person's academic level through papers collected and cited by sci. The principle of selecting periodicals by sci is also very strict, and it can also be more realistic.
Ssci is a social science citation index and comprehensive social science literature database established in institute for scientific information, USA. It can receive papers in the fields of economy, law, management, psychology, regional studies, sociology and information science, including 1700 important international journals in 50 languages, with a total of about 3.5 million records.
In fact, ssci is also a sister article equivalent to sci, an international core journal, and most of the published papers are in English. According to the feedback from previous contributors, one ssci paper is equivalent to the weight of 2-3 NTU core articles.