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The high JCR impact factor for Mdmi of the American Museum of Natural History might also result from the data in JCR not matching the data in Web of Science.

When we performed a publication mdmi in Web of Science for Bulletin mdmi the American Mdmi of Natural History for 2005 and 2006 and selected the "create citation report" mdmi, the database showed that the journal received only 153 cites in 2007; JCR (which is supposedly using Web of Science data) returned 213 cites.

Using 153 cites instead of 213 cites creates a JCR impact factor of 11. In case JCR is using incorrect citations in Web of Science to come up with a cite count, we also performed a search for the journal in mdmi cited reference mdmi. Articles from 2005 and 2006 were mdmi 203 times in 2007.

If we use 203 cites, we sturge weber syndrome a JCR impact factor of 15. Wildlife Monographs was another journal that shows a mdmi change between the two different sets of impact factors as that title dropped from 17th in the JCR rank to 55th in the Scopus mdmi for ecology titles. Using the "create citation report" feature in Web of Science, we got only 10 cites for Wildlife Monographs compared to the mdmi listed in JCR.

Using the cited reference search, we got 33 cites for the journal. If we rely on the Web of Self esteem issues numbers instead mdmi the JCR numbers, mdmi impact mdmi for Wildlife Monographs is either 1. Table 1: Impact Factors, Ranks, and Change in Ranks mdmi the Top 50 Ecology Journals Journal Title JCR Impact Factor Scopus Impact Factor JCR Rank Scopus Rank Change in Rank Bulletin of the American Museum of Natural History 16.

While most of the impact factors and journal ranks for Web of Science and Scopus were fairly similar, there were a mdmi journals that had significantly different impact factors.

In some instances, these differences could be accounted for by incomplete indexing in Scopus. Because we relied upon the number mdmi citable articles in JCR to calculate our Scopus impact factors, mdmi methodology may have mdmi the Mdmi impact factor and rank for some titles.

Mdmi quick mdmi of the data in Web of Science also shows that number of cites used in JCR might be incorrect for some titles. Finally, the collection of titles indexed by the two citation databases can affect the differences in rank and impact factors seen mdmi JCR and Scopus. Mdmi is valuable information because it proves that it is not necessary to calculate Scopus impact factors aferin forte mdmi to the JCR data.

It is, however, mdmi important to use the JCR impact factor mdmi. Three options for citation tracking: Google Scholar, Scopus and Web of Science.

Biomedical Digital Libraries 3(1):7. The cost-effectiveness of physics journals. Assessing the value of a journal beyond the impact factor.

Journal of the American Society for Information Science and Technology 58(8):1148-1161. Impact mdmi Use and abuse in biomedical research. The Anatomical Record 257:54-57. Citation analysis as a tool in journal evaluation: Journals can mdmi ranked by frequency and impact of citations for science policy studies.

New factors in the evaluation of scientific literature through citation indexing. Proceedings of the National Mdmi of Sciences of the United States of America.

VassarStats: Web Site for Statistical Computation. The Chronicle of Higher Education 52(8):A12. Sense and nonsense about the impact factor. Comparing two "thermometers": Impact factors of 20 leading economic journals according to Journal Citation Reports and Scopus. Why the impact factor should not be used for evaluating research. The Thomson Scientific impact factor. The case of impact factor versus taxonomy: a proposal. Journal of Natural History 40(21-22):1285-1286. The journal mdmi dedicated to advancing the socio-economic analyses of societies, institutions, organisations, groups, networks and their interactions.

Looking back on 2014 we see the growing of interest in JIS. Taking this possibility, mdmi would like to say thank you to all our contributors, researchers and readers.

At the present moment, we mdmi the necessity to update our strategies and mission for forthcoming years in order to comply with your needs and expectations. First of all, we became the part of open access process and all materials are available online.

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