市场结构如何影响r_d投入_基于中国制造业行业面板数据的实证分析

20071135∗∗136SchererCohenLevin(1989)2006200320071137PMC/PPMC..,,,,,,PCMijtijtijtijtVAWF−=WVAFijDomowitz1986CampaGoldberg1995Cheung200113822,1,2,3,4,5,2226,7,8,9,10,,logYFTRLenaLenaPjczPjczPjgtPjgtGybzGybzWzbzWzbz(2)itiitititititititititititubbbbbbbbbbeα=++++++++++++t—2003StonemanKumar20071139uiet140tz200711411422007114314420071145