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中国是主要的能源生产和消费大国,由于以煤炭为主要能源,中国经济发展与环境污染之间的矛盾日益突出。习总书记在党的十九大报告中指出:壮大节能环保产业、清洁能源产业,推进能源生产和消费革命,构建清洁低碳、安全高效的能源体系。新能源产业迎来了新的发展机遇。由于新能源产业成长初期存在规划不合理、基础设施建设不完善、技术创新不足等挑战,需要进行合理规划,完善基础设施,加强人才培养,鼓励技术创新,挖掘消费者需求,才能抓住机遇健康发展。 相似文献
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创意产业品牌城市的建设——以北京市为例 总被引：1，自引：0，他引：1
本文讨论了城市品牌理论、国际上发展创意产业集群的政策、理论和北京市发展创意产业品牌城市的战略问题。文章首先讨论了城市品牌的特征和内容, 在此基础上对比分析了创意产品集群发展的 4 点社会环境需求, 最后提出北京要建设成为创意产业品牌城市,要结合品牌城市理论和创意产业集群理论, 需要解决营造创意产业集群的基础条件、创意产业环境的基本建设和创意产品品牌建设等三个方面的问题。 相似文献
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随着全球气候变暖等环境问题日益恶化,寻求和开发利用环保高效的清洁能源已成为世界各国的战略选择。美、英、日等国制定和实施了一系列鼓励清洁能源技术开发、市场开拓和推广应用的政策,在清洁能源技术领域积累了较为丰富的经验。然而我国促进清洁能源技术发展的政策存在财政投入不足、税收优惠政策不到位等问题。通过借鉴国外经验,并结合本国国情,依靠资金保障机制、税收促进机制、产业扶持机制、人才培育机制的支持,推动我国清洁能源产业的平稳健康发展显得尤为重要。 相似文献
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李亮 《大科技．科学之谜》2013,(23):175-176
摘要：目前世界所面临的三大挑战分别是环境、人口、能源的问题。国民经济发展的物质基础是能源问题,从未来发展的趋势看,较为突出的是能源供需、环境污染等问题。因此,合理、高效、清洁地利用能源,对我国经济的快速发展和良好环境的维护具有深远的影响,为解决这一问题提出的新举措正是城市分布式能源站的应用和发展。 相似文献
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哈尔滨市大气环境污染具有典型的煤烟型污染特征。本文从优化产业结构,合理工业布局;发展清洁能源,改善能源结构;严格环境执法,强化环境管理;重视城市基础设施建设,加大环境投资力度等四个方面论述了治理哈尔滨市大气环境污染的途径。 相似文献
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风能作为一种重要的可再生清洁能源,在未来的能源系统中将发挥重要作用,因而得到了世界各国的高度重视。2006年1月《可再生能源法》的实施,进一步促进了我国风电产业的发展,成为我国实施可持续能源战略的重要措施。我国已进入风电建设的高速发展时期, 相似文献
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以兰州市为例,根据超效率SBM模型原理,构建城市节能环保产业效率评价指标体系。以2007—2015年为评价期间,首先利用Malmquist指数对产业效率进行动态分析及要素分解,然后在全国范围内对30个省会城市(直辖市)进行区域比较。实证结果表明,兰州市节能环保产业效率整体呈现跨期波动上升趋势,其中技术进步对其贡献最大,而纯技术效率和规模效率未发挥相应作用,产业组织管理水平有待提高,产业结构有望优化;兰州市节能环保产业效率在全国居中等水平,为DEA非有效,在从业人员、清洁能源利用效率等方面存在较大冗余,在固体废弃物综合利用和城市自然生态建设等方面存在期望产出不足,而"三废"防治仍是城市节能环保产业效率改进的重点。最后,就实证结论提出对策建议。 相似文献
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城市节能与碳减排政策情景分析——以北京市为例 总被引：3，自引：0，他引：3
城市是人类社会经济活动的中心,其能源消费占据了全球能源消费总量的75%,温室气体排放量也达到全球排放总量的80%。因此,将城市作为我国节能减排的主阵地具有重要的意义。本研究以北京市为例,借助情景分析方法探讨不同发展路径对城市未来能源消耗和碳排放的可能影响。通过构建LEAP模型分析基准（BAU）、政策（BP）和低碳（LC）3种不同情景下2007年-2030年北京市能源需求、能源结构和碳排放的发展趋势。研究结果显示,低碳情景下北京市能源需求总量预计2030年将达到88.61Mtce（百万吨标准煤）,分别比基准情景和政策情景低55.82%和32.72%,碳排放总量分别比基准情景和政策情景低62.22%和40.27%,且在2026年达到拐点,开始出现下降趋势;能源结构优化效果明显,低碳情景下清洁能源所占比重达到57.75%,高于基准情景和政策情景16.93%和11.25%;相比于基准情景,工业部门在政策情景和低碳情景下节能减排贡献率均最高,建筑和交通运输部门将在北京未来低碳道路上发挥出巨大潜力。这些结果将为北京市未来能源发展和建设低碳城市提供重要的定量化依据。 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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《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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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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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