1. Definition and calculation method: The calculation method of impact factor is to divide the total number of citations of papers published in a journal in the last two years by the total number of papers published in the journal in the last two years. Journals in the first and second regions are divided according to their influencing factors. The impact factors of the first regional journals are usually higher, while those of the second regional journals are relatively lower.
2. Academic status: The journals in the first district are generally regarded as the top journals in academic circles, and their published papers have high academic value and influence. Therefore, the influence factors of periodicals in a region are often high, which reflects the important position of these periodicals in academic circles. Although the periodicals in the second district also have certain academic value, their influence is relatively weak, so the influence factor is low.
3. Degree of competition: Due to the high academic status of the journals in the first district, a large number of outstanding scholars have been attracted to contribute, and the competition is fierce. This makes the quality of papers required by a regional journal higher, thus keeping the impact factors of these journals at a high level. However, the competition degree of periodicals in the second district is relatively low, and the quality requirements of papers may be slightly lower than those in the first district, so the impact factor is relatively low.
4. Subject field: The influencing factors in different subject fields may be different. The regional journals of some popular disciplines may have higher impact factors, because the research in these fields is more likely to be concerned and cited. However, in some relatively unpopular disciplines, the impact factors of periodicals in a region may be relatively low.
In a word, the influence factors of the journals in the first and second regions mainly reflect the differences in academic status, competition and subject fields of these journals. The influence factors of a regional periodical are usually high, which represents the top level of academic circles; However, the impact factors of the periodicals in the second district are relatively low, but they still have certain academic value and influence.