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本文选择国内外14家大型石油公司为样本,根据其2000年、2002-2010年10年的成品油业务经营数据,利用DEA和Malmquist方法测算了各公司的效率指标,据此判断成品油经营效率的变动情况,最后对Malmquist生产率指数做了敏感性分析。研究得出国际成品油行业的全要素生产率一直呈下降状态,国际成品油行业存在28.4%的投入资源浪费,规模效率以及技术效率低影响了总效率。
In this paper, 14 large oil companies at home and abroad are selected as samples. According to their business data of refined oil business in 2000 and 2002-2010, DEA and Malmquist methods are used to calculate the efficiency indexes of each company, and then the operating efficiency of refined oil products Finally, the sensitivity analysis of Malmquist productivity index was made. The study shows that the total factor productivity of the international refined oil industry has been declining. There are 28.4% of the input waste of resources in the international refined oil industry. The economies of scale and low technical efficiency have an impact on the total efficiency.