One is inclined to conceptualize impact in terms of citations per publication, and thus as an average. However, citation distributions are skewed, and the average has the disadvantage that the number of publications is used in the denominator. Using hundred percentiles, one can integrate the normalized citation curve and develop an indicator that can be compared across document sets because percentile ranks are defined at the article level. I apply this indicator to the set of 58 journals in the ISI Subject Category of "Nanoscience & nanotechnology," and rank journals, countries, cities, and institutes using non-parametric statistics. The significance levels of results can thus be indicated. The results are first compared with the ISI-Impact Factors, but this Integrated Impact Indicator (I3) can be used with any set downloaded from the (Social) Science Citation Index. The software is made publicly available at the Internet. Visualization techniques are also specified for evaluation by positioning institutes on Google Map overlays.
翻译:一种倾向于将每份出版物引用量的影响概念化,从而作为一个平均数。然而,引用的分布偏斜,平均值的缺点是出版物数量在分母中被使用。使用百分位数,可以将正常引用曲线整合,并开发一个指标,可以对各文件集进行比较,因为文章一级对百分位进行定义。我将这一指标应用于ISI主题类别“纳米科学和纳米技术”以及使用非参数统计的高级期刊、国家、城市和研究所的58种期刊。因此,可以说明成果的重要性。结果首先与ISI的“影响因素”进行比较,但这一综合影响指标(I3)可以与从(社会)科学引用指数下载的任何数据集一起使用。软件在互联网上公布。Google Mag overlays的定位研究所还为评价提供视觉化技术。