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Tudománymetriai újdonságok. Vége az impakt faktor egyeduralmának?
New bibliometric indicators. Is this the end of the impact factor era?
comparison of new metrics with the Journal Impact Factor . Preprint of an article accepted for publication in the European Journal of Organic Chemistry, 2009, http://www.lutz-bornmann.de/icons/BornmannSubmissionRevision.pdf (megnézve: 2009. 03. 16
Abstract
Some bibliometric methods for the assessment of the publication activity of research units are discussed on the basis of impact factors and citations of papers. 
Average subfield impact factor
of periodicals representing subfields in chemistry is suggested. This indicator characterizes the average citedness of a paper in a given subfield. Comparing the total sum of impact factors of corresponding periodicals divided by the number of papers published by a research team to the average subfield impact factor a publication strategy indicator can be derived. A new bibliometric indicator, relative subfield impact, is introduced which compares the number of citations received by papers of a research unit to the average subfield impact factor.
.04.001 . Althouse , B. M. , West , J. D. , Bergstrom , T. , & Bergstrom , C. T. ( 2010 ). Differences in impact factor across fields and over time . http://arxiv.org/abs/0804.3116v1 . Accessed Feb 10 2010
, Index Medicus and Core Medical Journals (AIM). They have an international readership and are those with the highest impact factors in the world (see Appendix). The non-English-medium journals are all indexed in the best non Anglo-American databases (e
However, a relevant number of citations or more precisely a high “impact factor” is the criterion for being included in the WoS (Glänzel and Moed 2002 ). Figure 12 shows the citation rate for journals in WoS for the years 2000–2008. We
circumstances are not always the same. The Impact Factor (IF) was developed by ISI (which is now named Thomson Reuter) and has been posted in the Journal Citation Reports (JCR) since 1975. The IF is used globally as a unique and sole journal indicator
Summary
We suggest that a h-type index - equal to h if you have published h papers, each of which has at least h citations - would be a useful supplement to journal impact factors.
Abstract
A method for estimating the standard error of mean citation rates per publication is proposed and examplified on journal impact factors. The use of the standard error values in statistical tests is also illustrated.
Abstract
After a brief discussion on the normalization factors allowing the quantitative comparison between various disciplines, a formula is proposed for taking into account the value of citations to papers published in journals with different impact factors.
with the group of no-Internet addiction, Mann-Whitney U test, P < 0.01 Univariable and multivariable analysis of suicidal ideation impact factors All impact factor variables were screened using single-factor non-conditional logistic regression
