钢铁行业相对效率的DEA实证分析

Empirical Analysis of DEA on Relative Efficiency of Steel Industry

通过应用数据包络分析法(DEA)对2007年中国A股上市公司11家代表性钢铁公司的相对效率进行实证分析,结果表明:8家公司的规模效益不变,本钢板材规模效益递增,规模效益递减的只有2家公司。根据经济学上的3阶段生产理论,最佳的生产阶段应该在规模效益递减阶段。我国钢铁行业处于经济学上的最佳生产阶段的公司不多,还不到样本总数的20%,而处于不变规模效益的公司则占到样本总数的70%以上,说明我国钢铁行业还有很大的发展潜力。

The empirical analysis on the relative efficiency of eleven representative steel companies from Chinese A-share Companies by DEA in 2007 showed that the scale benefit of eight companies kept unchanged, the scale benefit of sheet metal in Benxi Steel and Iron Group Company was increasing, while the scale benefit of two companies was decreasing. According to the production theory of three stages in economics, the best production stage is that of the scale benefit decreased. Hence, we conclude that our steel companies in optimal production stage are less than 20% of total samples, while the companies in stage of changed scale benefit account for over 70%, which indicate that there is great development potential in our steel industry.