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中央环保督察对产业结构升级的影响研究——基于技术创新和环境绩效视角 被引量:1
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作者 刘传明 胡欢欢 《山东财经大学学报》 2023年第3期63-74,97,共13页
基于中国地级市面板数据,将环保督察政策作为一项准自然实验,采用双重差分法对环保督察与产业结构升级的因果关系进行识别,并采用PSM-DID对环保督察的政策效应进行稳健性检验,揭示环保督察对产业结构升级的影响机制。研究发现:环保督察... 基于中国地级市面板数据,将环保督察政策作为一项准自然实验,采用双重差分法对环保督察与产业结构升级的因果关系进行识别,并采用PSM-DID对环保督察的政策效应进行稳健性检验,揭示环保督察对产业结构升级的影响机制。研究发现:环保督察能够显著促进产业结构升级,平均而言环保督察能够使产业结构升级4.83%,经过PSM-DID检验后发现环保督察对产业结构升级的影响具有较强的稳健性;异质性分析表明环保督察对东部地区产业结构升级的影响效应不显著,而对中西部欠发达城市具有显著的促进作用;影响机制分析表明技术创新和环境绩效在环保督察与产业结构升级之间扮演中介效应,环保督察政策的实施提升了试点地区的技术创新和环境绩效,进而有助于推动地方产业结构升级。 展开更多
关键词 环保督察 产业结构升级 双重差分 理论机制分析
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Quantum theory analysis on microscopic mechanism of the interaction of laser with cell membrane 被引量:2
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作者 XU Lin ZHANG Can-bang +3 位作者 WANG Sheng-yu LI Ling WANG Rui-li ZHOU Ling-yun 《Optoelectronics Letters》 EI 2007年第3期234-236,共3页
On the basis of liquid crystal model with the electric dipole moment of cell membrane,the microscopic mechanism of the electricity and thermology effects of interaction of laser with cell membrane is researched by ele... On the basis of liquid crystal model with the electric dipole moment of cell membrane,the microscopic mechanism of the electricity and thermology effects of interaction of laser with cell membrane is researched by electromagnetic,quantum mechanics and quantum statistics. We derive the formulas on the polarization effects and "temperature-rising effect" of laser-cell membrane interaction. The results of the theoretical research can explain some experiments. 展开更多
关键词 激光 细胞膜 相互作用 显微机制 量子理论分析
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Status quo, problems and suggestions on the self built database in the domestic library consortia
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作者 LI Tianzhang 《International English Education Research》 2018年第3期1-3,共3页
Through the online survey of 100 samples of the domestic library consortia, this paper analyzes and compares the number of the self-built databases of the library consortia, the standards and specifications of buildin... Through the online survey of 100 samples of the domestic library consortia, this paper analyzes and compares the number of the self-built databases of the library consortia, the standards and specifications of building the databases, the contents of the databases, the sharing principles, the management mechanisms and the effectiveness of the result displaying, and points out the problems existing in the self-built databases of the domestic library consortia and puts forward the countermeasures. 展开更多
关键词 Library consortium self-built database resource sharing
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