摘要
以“ISI Highly Cited.com”数据库中分子生物学与遗传学领域中部分科学家为样本,从纵向和横断的角度对该领域高被引科学家h指数进行统计,对h指数的历时性和共时性进行探讨和分析。结果表明:高被引科学家在研究生涯内h指数有线性成长规律;当高被引科学家不再发表论文后,h指数仍在5-8年期呈现对数型成长;以10年期划分的中年组、中老年组和老年组高被引科学家的h指数平均值以等差10依次递增。
J. E. Hirsch proposed the index h, defined as the number of papers with citation number 〉 h, as a useful index to characterize the scientific output of a researcher. In this paper we determine the time dependence of the h - index, and discuss h - index increas- ing of highly cited scientists in Molecular Biology ＆ Genetics, then draw two graphs： one is like conversed waterfall when h - index is diachronic change, and other is like a ladder when h - index is synchronic change. And the conclusions of positive research mean that： The h - index of a highly cited scientist is increasing as a linear model in his research career, and as a logarithm model in 5 - 8 years after he dont publish his paper any longer; In the other side, 122 highly cited scientists are divided into three groups and their averages of h - indexes are 10 increasing discrepantly.
出处
《科学学研究》
CSSCI
北大核心
2007年第3期407-414,共8页
Studies in Science of Science
基金
江苏大学人文社科基金资助项目(JBR2005032)
关键词
H指数
时间序列
高被引科学家
分子生物学
遗传学
Hirsch index, h- index, time dependent, highly cited scientists, molecular biology, genetics
