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重点国有林区森工企业全要素生产率影响因素分析——基于动态面板模型的实证研究 被引量:1
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作者 宁攸凉 宁泽逵 郭斌 《林业经济》 北大核心 2017年第9期57-62,共6页
基于重点国有林区2003~2014年84个森工企业面板数据,采用DEA-Malmquist模型评估了两种全要素生产率,运用SYS-GMM动态面板模型研究影响因素进行实证分析,结果显示:(1)森工企业单属性全要素生产率增长比多属性全要素生产率更快;(2)森工企... 基于重点国有林区2003~2014年84个森工企业面板数据,采用DEA-Malmquist模型评估了两种全要素生产率,运用SYS-GMM动态面板模型研究影响因素进行实证分析,结果显示:(1)森工企业单属性全要素生产率增长比多属性全要素生产率更快;(2)森工企业两种全要素生产率增长均主要得益于技术进步的贡献;(3)全要素生产率增长具有明显的累积效应,即森工企业前期全要素生产率增长越快,现期全要素生产率增长越快;(4)地区经济发展水平有利于全要素生产率增长,但非政府投资不利于全要素生产率增长。最后,讨论了这些结论的政策启示。 展开更多
关键词 森工企业 DEA-Malmquist模型 单属性全要素生产率 多属性生产率 动态面板模型
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Tubular electrocatalytic membrane reactor for alcohol oxidation:CFD simulation and experiment 被引量:2
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作者 Xin Wei Hong Wang +2 位作者 Zhen Yin Saood Qaseem Jianxin Li 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2017年第1期18-25,共8页
A functional electrocatalytic membrane reactor(ECMR) was performed for the electrocatalytic oxidation of2,2,3,3-tetrafluoro-l-propanol(TFP) into high value-added sodium 2,2,3,3-tetrafluoropropionate(STFP),A computatio... A functional electrocatalytic membrane reactor(ECMR) was performed for the electrocatalytic oxidation of2,2,3,3-tetrafluoro-l-propanol(TFP) into high value-added sodium 2,2,3,3-tetrafluoropropionate(STFP),A computational fluid dynamics(CFD) technique was applied to simulate the hydrodynamic distributions along a tubular ECMR so as to provide guidance for the design and optimization of ECMR Two-dimensional simulation with porous media model was employed to predict the properties of fluid dynamics in ECMR.The experimental investigation was carried to confirm the CFD simulation.Results showed that a uniform distribution of permeate velocity along the tubular reactor with short length and large diameter could be obtained.TFP conversion of97.7%,the selectivity to STFP of 99.9%and current efficiency of 40.1%were achieved from the ECMR with a length of 40 mm and an inside diameter of 53 mm.The simulations were in good agreement with the experimental results. 展开更多
关键词 Computational fluid dynamics(CFD) Electrocatalytic membrane reactor(ECMR) 2 2 3 3-Tetrafluoro-l-propanol(TFP) 2 2 3 3-Tetrafluoropropionate(STFP) Hydrodynamic distribution
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