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在综合分析国内外低碳城市内涵、建设经验及评价指标体系的基础上,构建由低碳能源、低碳经济、低碳社会、低碳环境、低碳技术5个准则层和19个具体指标组成的综合评估指标体系,测算中国31个省会城市2010年低碳发展综合水平,分析了存在问题与发展优势,提出了相关对策建议. 相似文献
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绿色创新是实现资源型城市经济增长、环境保护、社会和谐的有效途径,而构建资源型城市绿色创新能力评价指标体系是对资源型城市绿色创新能力进行评价的重要环节。本文以国内外具有代表性的机构和文献中的绿色创新能力高频指标为基础,根据绿色创新能力的内涵,结合资源型城市发展特点,海选70个数据可观测的指标,通过数据的正态分布检验后,选取非参数统计方法的灰关联系数与spearman分析方法定量筛选指标。既保证了指标之间信息不重复,又能显著影响评价结果,同时避免了现有研究忽略筛选方法使用条件就加以应用的弊端。以10个典型资源型城市2016年指标数据为样本,筛选并构建了包含27个指标的资源型城市绿色创新能力评价指标体系,验证了筛选方法的可行性和有效性。最后提出了相应的政策建议。 相似文献
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能源消费研究视角比较重视短期管理,研究成果往往难以解决能源管理的根本问题,能源供给视角的研究更有利于为能源的长期管理提供借鉴。本文选取能源资源禀赋、经济增长水平、产业结构和技术进步作为影响我国能源供给的主要因素,运用改进熵值法计算各指标权重,构建我国能源供给影响因素指标体系,采用突变级数法和最小二乘法(OLS)对我国1991年-2011年各指标相关数据进行综合分析评价。评价结果表明:四个影响因素对我国能源供给具有显著性促进作用,其中,能源资源禀赋的影响程度最大,其它三个因素的影响程度依次为经济增长水平、产业结构和技术进步。实证评价结果为进一步分析和提炼我国能源供给影响因素提供指导和借鉴。 相似文献
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绿色创新是实现资源型城市经济增长、环境保护、社会和谐的有效途径之一。以国内外具有代表性的机构和文献中的绿色创新能力高频指标为基础,根据绿色创新能力的内涵,结合资源型城市发展特点,海选70个数据可观测的指标,通过数据的正态分布检验选取非参数统计方法的灰关联系数与Spearman相关分析方法定量筛选指标,既保证指标之间信息不重复,又能显著影响评价结果,同时避免现有研究忽略筛选方法使用条件就加以应用的弊端。以10个典型资源型城市2016年指标数据为样本,筛选并构建包含27个指标的资源型城市绿色创新能力评价指标体系,验证筛选方法的可行性和有效性。最后提出相应的政策建议。 相似文献
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资源、能源和环境约束下的效率评价指标体系 总被引：1，自引：0，他引：1
目前,我国的资源、能源利用效率和环境效率较低,我国提出了循环经济发展战略.然而,传统的绩效评价指标体系以及国家有关宏观层面和工业园区的循环经济评价指标体系,难以适应生态化评价的要求.为此,设计了资源、能源和环境约束下适用于我国企业效率的综合评价指标体系,其中包含传统效率、资源效率、能源效率和环境效率四个子系统,以及每个子系统具体的指标变量. 相似文献
6.
构建城市群包容性绿色增长评价指标体系,运用熵权法确定指标权重,依据中国城市统计年鉴数据,对中国京津冀、长三角和珠三角城市群47个成员城市包容性绿色增长水平进行综合评价.研究结果表明,三大城市群包容性绿色增长水平存在明显的空间异质性;城市包容性绿色增长与城市规模存在一定程度的正相关性;大部分城市处于经济社会生态环境高水平协调或者低水平协调组.最后,提出提高城市包容性绿色增长水平,实现高质量发展对策建议. 相似文献
7.
《科研管理》2016,(6)
在全球金融危机与生态环境不断恶化的双重压力下,绿色增长作为一种追求经济和环境协调发展的新型增长方式越来越受到国际社会的关注,并逐渐成为学术界的研究热点。本文在比较分析国内外具有代表性的绿色增长评价体系的基础上,结合绿色增长的内涵与基本特征,从社会经济、资源环境、自然资产、生活质量与政策支持5个方面海选指标,并利用相关分析与变精度粗糙集进行指标的定量筛选,保证同一准则层内的指标信息没有重复且对评价结果具有显著影响。为避免因过度依赖客观数据而误删指标,本文根据专家意见进行理性分析,选择性补充典型的高频指标。最后,选取中国2001-2012年数据进行实证研究,确保研究方法的可行性和研究结论的可靠性。 相似文献
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绿色包容性增长作为一种全新的增长理念,自提出便受到国际社会的广泛关注。从经济增长、机会平等、成果共享以及资源环境等四个方面建立绿色包容性增长评价指标,运用因子分析法(FA)计算因子综合得分来测度2001—2011年中国经济增长绿色包容性的动态变化。结果表明,2001—2011年中国的教育、医疗卫生以及资源环境状况在整体上不断改善;发展成果共享程度在低层次剧烈波动中缓慢回归,但远低于期初水平;经济增长以2007年为界明显分割,前期稳步上升,后期迅速回落;中国经济增长的绿色包容性在整个期间内有一定程度的改善,但在期间内部存在较大的不稳定性。此外,发现机会平等与绿色因子对绿色包容性增长边际贡献最大,从侧面论证了将GDP总量与增速作为经济发展最重要衡量指标存在导向上的错误。 相似文献
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在全球金融危机与生态环境不断恶化的双重压力下,绿色增长作为一种追求经济和环境协调发展的新型增长方式越来越受到国际社会的关注,并已逐渐成为学术界的研究热点。本文以OECD绿色增长评价框架为基础,结合我国经济发展的实际情况,从社会经济、资源环境、自然资产、生活质量与政策支持5个方面选取指标,建立绿色增长影响因素指标集。针对主观筛选法的缺点,利用相关分析（CA）与变精度粗糙集（VPRS）对影响因素指标进行客观筛选,删掉同一准则层内信息重复性大且对评价结果没有显著影响的指标。基于CA-VPRS方法的实证分析,既证实了该方法的可行性,又为我国经济实现绿色增长提供了一定的理论支持。 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
12.
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
14.
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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《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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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)
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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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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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