本文讨论了一些与引证相关的问题,包括若干评价指标和科研评价。首先,本文回顾了各种期刊影响因子的概念;包括共时(Synchronous)和历时(Diachronous)影响因子之间的差异。其次,指出加菲尔德(Garfield)期刊影响因子(JIF)在期刊评价中存在的问题,并认为期刊影响因子不应再被用于评价科学家的个人贡献,这一观点也在旧金山宣言(DORA Declara- This article discusses some of the issues related to citation, including a number of evaluation indicators and research evaluation. First of all, this paper reviews the concept of various journal impact factors; including the differences between Synchronous and Diachronous impact factors. Second, we point out the problems that Garfield’s JIFs have in evaluating journals. They also think that journal impact factors should no longer be used to evaluate the individual contributions of scientists. This view is also reflected in the DORA Declara-