收录：
摘要：
Research and development (R&D) investment is an important index to measure the R&D activity scale and evaluate the innovation ability. Based on review of the theory of R&D intensity from scholars at home and abroad, the paper analyzes R&D intensity trend in China. GM (1, 1) model is used to simulate and predict future trend of China R&D intensity. © 2013 Springer-Verlag Berlin Heidelberg.
关键词：
通讯作者信息：
电子邮件地址：
