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本文将稀土后端企业按资产规模划分为大规模企业和小规模企业,选取2005~2013年的面板数据,利用DEA(数据包络分析)模型对不同规模企业间的经营绩效进行比较分析。结果表明,稀土后端产业综合效率呈递减趋势;大规模企业综合效率优于小规模企业;大多数企业处于规模收益递增阶段;纯技术效率是导致大规模企业绩效优于小规模企业的主要因素,但两类企业的规模效率差异不大;大、小规模企业发展方向不明确,导致研发投入增加无法促进纯技术效率的提升。
This paper divides rare earth back-end enterprises into large-scale enterprises and small-scale enterprises according to the scale of assets, selects the panel data from 2005 to 2013, and uses DEA (data envelopment analysis) model to comparatively analyze the operating performance among different scale enterprises. The results show that the comprehensive efficiency of rare earth back-end industry shows a declining trend; the comprehensive efficiency of large-scale enterprises is superior to that of small-scale enterprises; the majority of enterprises are in the stage of increasing returns to scale; pure technical efficiency is the main factor leading to large-scale enterprises’ performance superior to small- , But there is not much difference in scale efficiency between the two types of enterprises; the direction of the development of large and small-scale enterprises is not clear, leading to the increase of R & D investment can not promote the upgrading of pure technical efficiency.