SCI journals there is a certain partition, in accordance with the impact factor the level of the SCI journals into different zones, there are two types of SCI division, one division (SCI partitions) domestic Chinese Academy of Social Sciences carried out, and the other is the international soup division (JCR partitions) Thomson Reuters conducted, both of which are to be divided according to the SCI impact factor journals.
Thomson Reuters zoning laws JCR:
1, in each category subject before impact factor of 25% (25%) is divided into Zone 1 journals
2 and each subject category 25-50% before impact factor Journal of the total number located subjects (including 50%) of region 2
3, located in front subjects factor 50-75% total number of published (including 75%) of 3 regions of each subject category affecting
4, each subject category factor positioned subject of the total number of TV 75% zone 4
SCI zoning laws, CAS:
Chinese Academy of Sciences Documentation and Information Center based on the annual JCR data, the subjects are divided into 14 categories and 174 subcategories. Each subject classified according to the level of impact factor is divided into four areas 4:
1, in each category subject before impact factor of 5% (including 5%) is divided into Zone 1 journals
2 and each subject category Factor positioned disciplines 5-20% of the total number of former TV (20%) of region 2
3, each subject category 20-50% before impact factor subject located total number of published (50%) of 3 zone
4, each subject classification factors influencing the subject positioned in the total number of print region 4 50%
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