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Journal Impact Factors are a way to measure the value of a journal within its field of study. Several services quantitative tools for ranking, evaluating, categorizing, and comparing journals. Faculty sometimes use this as a way to determine the best academic journals to consider for submission. It is also used as a justification towards merit or tenure.
Eigenfactor: Ranks and Maps Scientific Knowledge:
Why Use Eigenfactor?
1) Article Influence Scores: Evaluates the prestige of a journal based on an algorithm of citation references.
2) Eigenfactor Score: Measures overall value provided by all of the articles published in a given journal in a year
3) Value of Journal: Compares price of a journal with article citation influence.
3) Expands coverage to over 115,000 items: Ranks scholarly journals in the natural and social sciences as well as newsprint, PhD theses, and popular magazines.
How to use:
Note: advanced search (searches by Thomson JCR subject categories, publisher, and other fields) is also available.
The SCImago Journal & Country Rank (SJR) is a portal that includes the journals and country scientific indicators developed from the information contained in the Scopus® database by Elsevier. It is a free resource. Journals are organized within major thematic categories as well as the Scopus Classification.