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通过选取2006～2014年中国30个省份(西藏除外)的面板数据为研究样本,对各地区的产业结构升级系数进行了测算,并分析环境规制、民间投资对我国产业结构绿色升级的影响.研究发现,从全国范围来看,民间投资是我国产业结构升级的重要推动力量,环境规制也显著促进了我国的产业结构升级.分区域来看,民间投资和环境规制对产业结构升级影响的区域性差异较大,东部地区民间投资的影响为负,中西部地区为正;东部和中部地区环境规制影响为正,而西部地区影响甚微.此外,研发投入、贸易、财政支出等对我国的产业结构升级也产生影响.同时,由于我国的受教育程度普遍偏低,未能为产业结构绿色升级提供足够的人力资本支撑. 相似文献
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本文利用2007-2016中国工业省级面板数据,构建系统GMM和动态门槛模型,验证了直接管制型、经济激励型、公众参与型等环境规制工具对不同地区企业绿色技术创新的影响效果和门槛效应。研究结果表明：针对不同地区,各种环境规制工具对绿色技术创新的影响存在较大差异。对东部地区而言,经济激励对企业绿色技术创新具有显著的一阶滞后效应和双门槛效应,直接管制对企业绿色技术创新的影响不显著。对中部地区而言,直接管制对企业绿色技术创新存在显著的一阶滞后效应和单门槛效应,经济激励对企业绿色技术创新的影响不显著。对西部地区而言,直接管制对企业绿色技术创新存在显著的一阶滞后效应和双门槛效应,经济激励对企业绿色技术创新的影响也不显著。同时,公众参与对各地区企业的绿色技术创新影响均不显著。 相似文献
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利用2005—2014年中国30个省级行政区(西藏和港澳台除外)的面板数据,对环境规制条件下外商直接投资、对外直接投资、进口和出口贸易对绿色技术创新的影响进行了分析,结果如下,从区域角度来看,环境规制条件下的FDI、OFDI、进出口贸易对全国、东部和中部的绿色技术创新存在正向影响,对西部地区的影响不显著;从影响程度来看,这一影响呈现出显著的区域差异性。因此,为提高绿色技术创新水平,各区域应制定符合自身实际的发展策略。 相似文献
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环境规制、绿色技术创新与中国制造业转型升级 总被引：1，自引：0，他引：1
随着中国生态环境的恶化,绿色技术创新已成为环境规制约束下制造业转型升级的重要途径。基于环境规制、绿色技术创新和中国制造业转型升级的作用机理,运用GMM估计法检验环境规制对技术创新及绿色技术创新对制造业转型升级的影响。结果表明,严格的环境规制会促进企业进行绿色技术创新,绿色技术创新与制造业转型升级呈U型关系。进一步将全国样本分为东部地区和中西部地区,检验绿色技术创新对制造业转型升级的区域性差异。结果表明,东部和中西部地区的绿色技术创新水平均位于U型曲线左侧。随着绿色技术创新的不断实施,相比于东部地区,中西部地区会更早到达U型曲线的“门槛值”,实现制造业转型升级。 相似文献
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绿色技术创新是实现经济和环境双赢的首要动力,在中国经济发展面临结构调整阵痛期等“四期叠加”阶段,有必要深入探析绿色技术创新的碳解锁路径。考虑生态环境承载压力,以2006—2020年我国30个省市（不包括台湾、香港、澳门和西藏）的面板数据为研究样本,测度各地区碳锁定水平,并基于经济结构调整视角分析了绿色技术创新实现碳解锁的产业结构、能源结构和要素结构优化机制以及环境规制的调节作用。研究发现：绿色技术创新具有显著的碳解锁效应,且在东部地区、经济发达地区和未拥有创新型产业集群的地区对碳锁定的抑制作用更强;产业结构和能源结构是绿色技术创新促降碳锁定的有效机制,要素结构优化则起到遮掩效应;正式环境规制能够显著调节要素结构对碳锁定的中介作用,使其发挥积极的碳解锁效应;环境规制并非所有结构优化机制促降碳锁定的有效调节手段,正式环境规制有利于产业结构、能源结构高效化和要素结构对碳锁定的促降作用,而非正式环境规制的调节作用不显著。研究结论有助于提升“双碳”目标下绿色技术创新实现碳解锁效应的认识,同时为地区制订相关政策提供建议参考。 相似文献
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以制造业上市公司为研究样本,对环境规制对于企业技术创新的影响以及绿色金融在其中的调节作用进行实证检验。研究发现：环境规制对企业技术创新具有显著的促进作用,这种促进作用在强融资约束企业中表现相对较弱;绿色金融发展对环境规制对于企业技术创新的促进效应具有显著地正向调节作用,且这种正向调节作用在强融资约束企业中表现得更为明显;与低环境规制强度地区相比,强环境规制地区的绿色金融发展对于环境规制与企业技术创新关系的正向调节作用相对更大。 相似文献
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为检视不同环境规制对技术创新的有效性,本文采用基准回归模型、中介效应模型、门槛效应模型分析了四类环境规制工具与企业绿色技术创新之间的关系,对“波特假说”的中国实践进行了再检验。研究发现,与环境行政处罚、地区环境政策法规相比,排污费征缴、政府节能环保财政支出更有助于推动企业绿色技术创新,反映出不同环境规制工具的选取对绿色技术创新影响的差异性。进一步通过中介效应模型和门槛回归模型分析,排污费征缴和政府节能环保财政支出均可通过提升企业研发投入强度来推动企业绿色技术创新,但是四类环境规制工具的效果随着各自强度提升呈现出差异化特点,排污费征缴、政府节能环保财政支出对企业绿色技术创新的影响由负变正、由不显著变显著,环境行政处罚随着强度提高却更加阻碍企业绿色技术创新,而无论地区环境政策法规的强度如何,其对绿色技术创新的影响均不显著。 相似文献
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利用我国30个省份2008~2017年的数据,构建Super-SBM模型测度各区域绿色技术创新效率,进而利用门槛面板模型,以环境规制和产业集聚为门槛变量,实证研究贸易对区域绿色技术创新效率溢出的非线性影响。结果表明：(1)从效率值来看,我国绿色技术创新效率增长迅速,但区域发展“不平衡性”严重,东部地区的效率值遥遥领先于中西部地区；(2)从门槛结果来看,贸易对区域绿色技术创新效率的溢出显著存在环境规制、产业集聚的“双门槛”效应；(3)从作用机制来看,环境规制下的贸易与绿色技术创新效率呈“U”型关系,随着环境规制强度提高,溢出的“挤出效应”逐步转为“激励效应”,影响由负变正且作用逐渐增大；产业集聚下的贸易与绿色技术创新效率呈“N”型关系,仅当产业集聚水平跨过第二门槛时,影响显著为正；环境规制对绿色技术创新效率表现为显著的直接推动作用和间接门槛作用,产业集聚对绿色技术创新效率仅表现为间接门槛作用。 相似文献
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《科技管理研究》2020,(8)
为检视不同环境规制对技术创新的有效性,采用基准回归模型、中介效应模型、门槛效应模型分析4类环境规制工具与企业绿色技术创新之间的关系,对"波特假说"的中国实践进行再检验,研究发现与环境行政处罚、地区环境政策法规相比,排污费征缴、政府节能环保财政支出更有助于推动企业绿色技术创新,反映出不同环境规制工具的选取对绿色技术创新影响的差异性。进一步通过中介效应模型和门槛回归模型分析发现,排污费征缴和政府节能环保财政支出均可通过提升企业研发投入强度来推动企业绿色技术创新,但是4类环境规制工具的效果随着各自实施强度提升呈现出差异化特点,排污费征缴、政府节能环保财政支出对企业绿色技术创新的影响由负变正、由不显著变显著,环境行政处罚随着强度提高却更加阻碍企业绿色技术创新,而无论地区环境政策法规的强度如何,其对绿色技术创新的影响均不显著。 相似文献
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A research group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol-a chemical found in the skins of red grapes in red wine-can improve the sensitivity of mice to the hormone insulin according to a report in the October issue of Cell Metabolism.…… 《中国科学院院刊(英文版)》2008,22(1):14-15
Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said. 相似文献
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Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
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A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
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Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
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Active biological molecules functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery disease diagnosis therapy new nanodevice construction.…… 《中国科学院院刊(英文版)》2008,22(1):22-22
Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction. 相似文献
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《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
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Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
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《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
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Leah A. Lievrouw 《The Information Society》2000,16(2):155-159
This essay focuses on universal service and the Internet as means to support social and political participation. The emphasis on access to telecommunications systems in conventional approaches to universal service is contrasted with access to content. A model of the information environment is described that accounts for the roles of content and conduit, both of which are necessary conditions to achieve true access. A method is outlined for employing information indicators to observe or measure the information environment. 相似文献
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Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献