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Permalink Reply by JYOTI VERMA on September 19, 2011 at 17:51

Use the library's Ejournals page links to impact factors from the Journal Citation Reports (JCR). The impact factor is a measure of the frequency with which the average article in a journal has been cited in a particular year. The JCR also lists journals and their impact factors and ranking in the context of their specific field(s).

You can also search for an article in Web of Knowledge using the citation's bibliographic information, then view the impact factor for the article's journal.

 

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Permalink Reply by Dr. Rajpal Purohit on September 19, 2011 at 18:26

thanks jyoti u r doing well .

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Permalink Reply by Jayshree Dave on September 19, 2011 at 18:33

Impact Factor is one of the quantitative tools for ranking, evaluating, categorizing, and comparing journals.  It is a measure of the frequency with which the "average article" in a journal has been cited in a particular year or period. The annual impact factor is a ratio between citations and recent citable items published. Thus, the impact factor of a journal is calculated by dividing the number of current year citations to the source items published in that journal during the previous two years.

Calculation for journal impact factor.
A= total cites in 1992
B= 1992 cites to articles published in 1990-91 (this is a subset of A)
C= number of articles published in 1990-91
D= B/C = 1992 impact factor

The impact factor is useful in clarifying the significance of absolute (or total) citation frequencies. It eliminates some of the bias of such counts which favor large journals over small ones, or frequently issued journals over less frequently issued ones, and of older journals over newer ones. Particularly in the latter case such journals have a larger citable body of literature than smaller or younger journals. All things being equal, the larger the number of previously published articles, the more often a journal will be cited.

 for more detail follow the Link http://abhayjere.com/impactfactor.aspx

and

http://biblioteca.uoc.edu/eng/services/factor_impacte_ENG.pdf

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Permalink Reply by Dr. Rajpal Purohit on September 19, 2011 at 19:08

great jayshree thanks and welcome after long time h r u thanks a lot.

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Permalink Reply by Dr. Rajpal Purohit on September 19, 2011 at 19:08

thanks great mam thanks.

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