Quartile rankings are derived for each journal in each of its subject categories according to which quartile of the IF distribution the journal occupies for that subject category.
Quartiles are useful when applying for grants and assessment such as (National Agency for Quality Assessment and Accreditation of Spain, ANECA) or (Catalan University Quality Assurance Agency, AQU Catalonia). Quartiles are also useful when deciding best journals to publish.
The Journal Impact Factor is the average number of times articles from the journal published in the past two years have been cited in the JCR year.
New JCR indicator for all journals included in the Web of Science Core Collection:
See the tutorial at Journal Citation Indicator Guide
The Immediacy Index is the average number of times an article is cited in the year it is published.
The Immediacy Index is calculated by dividing the number of citations to articles published in a given year by the number of articles published in that year.
A journal's Eigenfactor score is our measure of the journal's total importance to the scientific community.
The h index expresses the journal's number of articles (h) that have received at least h citations. It quantifies both journal scientific productivity and scientific impact and it is also applicable to scientists, countries.