Abstract

The purpose of this study is to analysis the types of cited materials. dependence ratio of foreign information of researchers. and half-life of some cited analysis. Journal articles from four science & technology fields-mechanical, architectural, chemical, electrical-are selected, and the literatures cited by those journal articles are analysed in terms of resource types. languages, publication year of cited analysis. In result, it was found that the order of frequency of citation is scholarly journal, monograph, proceeding, technical report. And dependence ratio of foreign information of researchers was most higher in the chemical field. Also. it was found that half-life of mechanical is 6.50, that of architectural is 5.45, that of chemical is 9.65, that of electrical is 5.60.