【摘要】 本文采用文献计量学和数理统计学的理论方法 ,选取 2 0 0 2年我国出版的数学核心期刊 17种为统计对象 ,得出引文数量分布 ,介绍了文献半衰期的三种计算方法。更多还原

【Abstract】 Based on 17 kinds of Chinese core mathematics journals published in 2002, by using the theoretical methods of biblio-metrics and mathematical statistic, we can get the quantity distribution of citation and three methods about how to calculate the half obsolescence life of documents.更多还原