Journal Impact Factor from Journal Citation Report (JCR), is a product of Thomson ISI (Institute for Scientific Information). JCR provides quantitative tools for evaluating journals. The impact factor is one of these; it is a measure of the frequency with which the "Average Article" in a journal has been cited in a given period of time. This section will provide introduction and information in relation to impact factor of journals published for / by Pezzottaite Journals.