What are the influencing factors of 1. journals?
The impact factor of a periodical is a quantitative index to characterize its influence. That is to say, the average number of citations of each paper in a journal is actually the ratio of the number of citations of all papers published in a journal in the first two years of a certain year to the number of citations of all source papers published in the journal in the first two years.
Calculation formula: if (k) = (NK-1+NK-2)/(NK-1+NK-2).
Second, how to query the journal impact factors
First of all, we need to know the specific query address when querying the impact factors. The query addresses of foreign periodicals and Chinese periodicals are different.
1. To query the impact factors of foreign periodicals, you can use JCR in the Science foreign language database Web, in which JCR science edition is used to query natural science periodicals and JCR social science edition is used to query humanities and social science periodicals.
2. To query the impact factors of Chinese journals, you can use the Comprehensive Citation Report of China Academic Journals (edited by Wanjin, Science Press) jointly published by China Academic Journals (CD-ROM Edition) and China Scientific Literature Metrology and Evaluation Center. Readers in need should go to the library consulting department for enquiry.
Secondly, you need to know the abbreviation of the journal when querying the impact factors. There are many rules for this, as follows:
1, the title of a single word may not be abbreviated.
Some titles consist of a content word, such as biomaterials, nature, science and so on.
2. Monosyllabic words in journal titles are generally not abbreviated.
There are many monosyllabic words in English periodicals, such as FOOD, CHEST and CHILD, which cannot be abbreviated. For example, the medical journal hearand lung, abbreviated as Heart Lung, only omits the conjunctions and. However, several words that constitute place names, such as NEW and SOUTH, can be abbreviated to corresponding initials.
For example, the New England Journal of Medicine can be abbreviated as N Engl J Med instead of slightly New England J Med, and the South African Journal of Surgery can be abbreviated as S Afr J Surg, but not South Afr J Surg. In addition, words with less than 5 letters (including 5 letters) are generally not abbreviated, such as Acta, Heart, Bone, Joint, etc.