中文摘要：

运用删失分位点回归方法,通过选取上海市大中型工业企业的微观统计数据,实证研究分析了企业不同研发投入强度随研发人力强度、企业规模、人力成本等多个影响因素变化的具体效应、特征以及相互关系,以求发掘其中的异质性.研究结果发现：企业研发人力强度与研发支出强度之间存在极为显著的正相关性,人力成本的上升在研发支出强度的中高分位点处会带来较为显著的负面影响效应,企业规模类型对研发支出强度未产生显著影响效应,但是企业人数、销售收入与研发支出强度之间的关系基本保持一致,企业盈利能力与研发支出强度之间关系则并不显著.

英文摘要：

By using censored quantile regression,this paper selects panel data on large and medium-sized industrial enterprises in Shanghai to study the factors affecting R＆D expenditure intensity including enterprise scale.This paper explores the heterogeneities by examining the effects,features and correlations of R＆D expenditure intensity and other factors.This paper discovers that R＆D personnel intensity has significant positive effects on R＆D expenditure intensity,and the negative influence of per capita wage is found in medium and high quantiles.Meanwhile,enterprise scale type has no striking effects on R＆D expenditure intensity,but employees and sales incomes have nearly consistent effects.