山西上市公司技术创新效率与中部和周边省份的研究——基于超效率DEA和Malmquist指数模型

A Study on the Listed Companies' Efficiency of Technological Innovation Between Shanxi and Other Central and Peripheral Provinces——Based on Super-Efficiency DEA and Malmquist index

选取山西与中部和周边省份上市公司2010-2013年面板数据,运用超效率DEA和Malmquist指数模型,从静态和动态两个角度比较这些地区上市公司的技术创新效率。结果表明:山西上市公司超效率DEA有效数、有效率逐年下降,平均效率呈波动性;Malmquist指数下降幅度最大,与中部和周边省份相比有较大差距。2010-2013年山西上市公司纯技术效率和规模效率指数随时间变化幅度减小,技术变动指数显著下降,阻碍山西上市公司技术创新效率提高的关键因素是技术变动指数的反向变化。

This paper uses panel data （2010--2013） of listed companies in Shanxi and other central and peripheral province to compare their static and dynamic efficiency of technological innovation based on Super-efficiency DEA and Malmquist Index. The results showed that Super-Efficiency DEA effective numbers and ratio of Shanxi listed companies were decreased year by year, the average efficiency of Shanxi listed companies fluctuated; Malmquist Index of Shanxi listed companies showed the largest decline, which means a large gap between Shanxi and other central and peripheral provinces＇. From 2010 to 2013, variation amplitude of pech and sech of the listed companies in Shanxi were reduced, while at the same time, techch was significantly decreasing. The reversal in techch is the major factor hindering the efficiency of technological innovation of listed companies in Shanxi from improving.