Department of Microbiology, Faculty of Medicine, Shahed University, Tehran, Iran.
J Biomed Inform. 2011 Apr;44(2):216-20. doi: 10.1016/j.jbi.2010.11.002. Epub 2010 Nov 13.
The interests in journal impact factor (JIF) in scientific communities have grown over the last decades. The JIFs are used to evaluate journals quality and the papers published therein. JIF is a discipline specific measure and the comparison between the JIF dedicated to different disciplines is inadequate, unless a normalization process is performed. In this study, normalized impact factor (NIF) was introduced as a relatively simple method enabling the JIFs to be used when evaluating the quality of journals and research works in different disciplines. The NIF index was established based on the multiplication of JIF by a constant factor. The constants were calculated for all 54 disciplines of biomedical field during 2005, 2006, 2007, 2008 and 2009 years. Also, ranking of 393 journals in different biomedical disciplines according to the NIF and JIF were compared to illustrate how the NIF index can be used for the evaluation of publications in different disciplines. The findings prove that the use of the NIF enhances the equality in assessing the quality of research works produced by researchers who work in different disciplines.
在过去几十年中，科学界对期刊影响因子（JIF）的兴趣日益浓厚。JIF 用于评估期刊的质量和其中发表的论文。JIF 是学科特定的衡量标准，不同学科的 JIF 之间的比较是不充分的，除非进行归一化处理。在这项研究中，引入了归一化影响因子（NIF）作为一种相对简单的方法，使 JIF 能够用于评估不同学科的期刊和研究工作的质量。NIF 指数是通过将 JIF 乘以常数因子而建立的。这些常数是在 2005 年、2006 年、2007 年、2008 年和 2009 年期间为生物医学领域的 54 个学科计算的。此外，还比较了根据 NIF 和 JIF 对 393 种不同生物医学学科期刊的排名，以说明如何使用 NIF 指数评估不同学科的出版物。研究结果证明，使用 NIF 可以增强对在不同学科工作的研究人员所产生的研究工作质量的评估的公平性。
