论文部分内容阅读
h类指数是集发文与引文为一体的文献计量指标。h类指数序列可用于展示研究对象绩效的动态演化。已发表的h类指数序列研究采用的是全引文窗口,不同发文年的h类指数因引文窗口不同而不可比较。本文介绍了基于固定引文窗口构建h类指数序列的方法。固定引文窗口保证了不同发文年h类指数的可比性。利用SC I数据库1978-2009年期间中国、印度、日本发表的物理学论文的数据,分别构建了三个国家基于5年引文窗口的h指数序列、g指数序列、a指数序列以及r指数序列,并对三国物理学发展做了比较研究。
h index is a collection of articles and citations as one of the bibliometric indicators. The h-index sequence can be used to show the dynamic evolution of the performance of the subject. The published h-index sequence study uses a full citation window. The h indices in different years are not comparable due to different citation windows. This article describes a method based on a fixed citation window to construct h-type exponential sequences. Fixed citation windows ensure the comparability of h indices in different years. Based on the data of physics papers published in China, India and Japan from 1978 to 2009 in SCI database, the h-index sequence, g-index sequence, a-index sequence and r-index sequence of three countries based on five- And made a comparative study of the development of physics in the Three Kingdoms.