INDICATORS OF SCIENTIFIC COLLABORATION 1. Co-authorship as ameasure of scientific collaboration Kretschmer, 1992 年将科研合作定义为科学内的社会分层。 The publishedresults of intra- and extramural collaboration have been compared at theinstitutional level, and the strongly intensifying do ...
一. 信息科学和文献计量学中关于引用的定义 Susan Cozzens(1989) citation is only secondarily a reward system. Linda C. Smith citations are signposts left behind after information has been utilized. Blaise Cronin defined citation as,frozen footprints in thelandscap ...
1. 影响因子 ( Impact Factor,IF), 即某期刊前两年发( S, T )表的论文在统计当年( U )的被引用总次数 X (前两年总被引次数)除以该期刊在前两年( S, T )内发表的论文总数 Y (前两年总发文量)。这是一个国际上通行的期刊评价指标。公式为: IFU = ( X ...