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环保产业作为我国的战略性新兴产业对国民经济的发展至关重要。选取我国31个省(区、市)的环保产业发展数据,运用因子分析法对我国东部、东北、中部、西部4个区域环保产业进行分析评价。结果显示,我国环保产业竞争力较强的省(区、市)主要集中在东部沿海、沿江及中部经济发达地区,这与地区经济发展水平基本一致;环保投资与政府扶持是影响环保产业发展的主要因素。基于以上结论,提出促进环保产业发展的建议与对策。 相似文献
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我国区域科技竞争力评价体系研究 总被引：16，自引：3，他引：16
通过建立区域科技竞争力评价指标体系和评价模型,对我国31个省(市、自治区)科技竞争力进行了综合评价,得出东部地区与中部、西部在科技竞力方面存在很大的差距、地区科技竞争力与地区经济实力基本一致的结论。 相似文献
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资源配置效率的比较分析——以我国区域高等教育资源为例 总被引：1，自引：0，他引：1
《软科学》2014,(10):22-26
利用DEA模型对我国31省(市、区)的高等教育资源配置效率进行测度,然后通过空间数据对区域高等教育资源配置效率进行空间相关性分析。研究表明,我国各省(市、区)的高等教育配置效率存在着很大的差距,东部地区明显高于西部地区,而西部地区的陕西省和贵州省的平均超效率值则高于东部地区均值,高等教育资源的集聚扩散效应是导致资源配置效率差异的主要原因之一。 相似文献
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中国经济发展水平区域差异的人工神经网络判定 总被引：26，自引：0，他引：26
本文在对目前经济发展水平度量方法进行分析的基础上,运用人工神经网络(ANN)的理论和方法,构建了ANN模型分析中应用最为广泛的BP网络,并对2000年中国31个省、市(自治区)的经济发展水平进行了评价.网络运行结果表明,中国经济发展水平的区域差异显著,评价结果与专家的判断基本近似.根据评价结果,采用最短聚类分析法,将中国区域经济发展水平分为5级,经济发展水平较高的省(市、区)主要分布在东部沿海地区,经济发展水平较低及落后的省(市、区)主要分布在中部和西部地区,中国经济发展水平的区域差异主要表现为东部和中西部及沿海和内地的差异.可见,人工神经网络用于评价经济发展水平简便、实用,且避免了人工确定指标权重的主观性,是一条具有发展和应用前景的途径. 相似文献
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构建省域高技术产业综合评价体系,依据2017年中国高技术产业数据,采用多层次因子分析方法对我国内地31个省市高技术产业发展水平进行实证分析。结果表明,我国高技术产业整体呈现东强西弱态势;东部地区高技术产业发展水平高,中部地区和部分西部地区固定资产投入大;但高技术产业成果转化效率和产业环境有待提高,西部偏远地区和东北地区高技术产业发展水平较低。东部地区可提高研发投入强度,承接国际高端高技术产业转移;中部地区和西部部分地区需健全促进高技术科技成果转化机制,扩大对外开放水平;西部偏远地区需加强高技术产业承接基础配套设施;东北地区可激活高技术国企活力,支持高技术民营企业发展,完善人才激励机制。 相似文献
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本文通过使用区位熵方法,对我国西部地区11个省高技术产业2002年和2012年的集聚水平进行了测度,并对比了西部地区与东部和中部地区的区位熵。研究结果表明,不同的高技术行业在西部不同省份之间有着明显的差异,且在变化趋势上也各有不同。最后,在全文分析基础上为我国西部地区高技术产业发展提出了对策建议。 相似文献
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碳排放约束视角下的全要素能源效率及影响因素研究 总被引：1，自引：0，他引：1
基于1993~2011年我国29个省(市、区)的省级面板数据,对我国各省域的全要素能源效率进行测度,发现我国不同地区的能源效率存在较大差异,东部地区全要素能源效率最高、中部地区次之、西部地区能源效率最低。全要素能源效率影响因素的实证检验结果表明:产业结构和经济规模对能源效率具有显著的促进作用;随着我国经济的快速发展、第三产业比重的提高,我国能源效率将趋于下降;对外开放和交通基础设施对能源效率影响为负,"污染天堂假说"得到验证;资源禀赋对能源效率影响为负,但不显著,"资源越丰裕地区能源效率越低"命题并不稳健。 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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《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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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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《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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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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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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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
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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