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Comparative Study on Efficiency of the Seaports in China and Korea
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作者 S HAO Yanbo PAN Baofeng 《Journal of Donghua University(English Edition)》 EI CAS 2018年第4期321-325,共5页
The efficiency of the seaport has been variously studied utilizing either data envelopment analysis( DEA) or stochastic Frontier analysis( SFA). Given the strengths and weaknesses associated with these two approaches,... The efficiency of the seaport has been variously studied utilizing either data envelopment analysis( DEA) or stochastic Frontier analysis( SFA). Given the strengths and weaknesses associated with these two approaches, applying both models to compute efficiency estimates for the 11 seaports of the China and Korea from 2012-2016 and comparing the results obtained. Main finding facts of this paper are as follows:( i) there are some differences among relative efficiency levels,but almost no differences among efficiency ranks in DEA and SFA results.( ii) The tendency of VRS is stronger in Chinese coastal seaports during the past several years.( iii) The values among seaports in SFA model are relatively smaller than those in the DEA models. The results show that the efficiency of major seaports in Korea is far lower than that of ports in China. 展开更多
关键词 data envelopment analysis ( DEA ) STOCHASTIC frontierapproach ( SFA ) SEAPORTS EFFICIENCY China Korea
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人力资本积累与中国制造业技术创新效率的差异性 被引量:102
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作者 孙文杰 沈坤荣 《中国工业经济》 CSSCI 北大核心 2009年第3期81-91,共11页
经济全球化背景下,技术学习能力和技术人员人力资本积累是影响我国企业自主创新能力的重要因素。本文从技术学习的视角,运用随机前沿方法对人力资本积累与中国大中型企业技术创新效率的关系进行了产业层面的计量检验。研究结果表明,在... 经济全球化背景下,技术学习能力和技术人员人力资本积累是影响我国企业自主创新能力的重要因素。本文从技术学习的视角,运用随机前沿方法对人力资本积累与中国大中型企业技术创新效率的关系进行了产业层面的计量检验。研究结果表明,在劳动密集型产业和中低档次的机械制造业领域,我国大中型企业的创新效率较高,在0.7到0.8之间;而在石油加工、黑色金属冶炼及压延加工业等研发资本密集型产业,技术创新效率相对较低,如石油加工、黑色金属冶炼及压延加工业、电力生产和供应业的创新效率为0.262,0.278,0.216。研究还发现,国内企业技术人员的人力资本积累存在明显的门槛效应,低于这一临界值,国内企业技术学习能力和自主创新能力的提升将十分有限。 展开更多
关键词 外资企业研发 技术创新效率 随机前沿生产函数
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