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1.
百年变局叠加世纪疫情给全球能源安全敲响警钟,深刻理解能源转型发展与能源安全的关系,探寻中国能源安全与“双碳”战略同步实现路径成为重大战略问题。文章基于对中国能源发展图景和“双碳”战略内涵的分析,明确提出:(1)能源安全是能源转型发展的基础,中国油气短缺形势长期存在,“双碳”目标与油气安全战略并行不悖。(2)中国的油气安全需在两个层次谋篇布局,近中远全程做好部署——做稳做好传统油气勘探领域发展,宜坚持“海陆并举、常非并重,稳油增气”目标;积极开拓新油气资源领域,重点组织好陆相中低熟页岩油原位转化、富油煤热转化利用与煤炭地下气化等“三个革命”,为在传统油气领域“稳油增气”基础上实现规模上产做好准备。(3)“双碳”战略是一场广泛而深刻的系统革命,化石能源的退出必须以能源安全为前提,要把化石能源清洁化利用、可再生能源加大利用、柔性智能电网建设、储能基础设施建设与能源利用效率提升5件大事同步抓实抓好,在保证能源安全无虞基础上,依靠技术进步,通过多途径实现“碳中和”目标。 相似文献
2.
能源是经济运行的血脉,乌克兰危机爆发引发区域性能源供应危机和全球性能源市场动荡,全球能源格局和能源科技发展趋势发生深刻变革,对我国能源领域科技战略产生深远影响。文章基于对世界主要经济体能源战略转向研究,结合国际能源贸易、全球低碳转型和国家能源安全等角度,聚焦能源领域科技战略趋势研判。文章认为：（1）能源供应本土化已成为全球能源科技战略发展方向;（2）清洁能源时代,能源技术成本属性逐渐增强;（3）全球加速清洁能源技术研发进程;（4）清洁能源领域国际科技合作面临新挑战。此外,结合我国能源结构现状,从战略部署、研发平台、研发导向、创新体制和国际合作等角度提出政策建议。研究结果对我国构建能源体系新格局和能源科技新战略提供参考和启示。 相似文献
3.
中国区域能源安全的差异性分析——以广东省和陕西省为例 总被引：2，自引：0，他引：2
能源“四荒”、“拉闸限电”以及2008年发生在中国的特大冰雪灾害,为中国区域能源安全敲响了警钟,也证实了中国区域能源安全问题客观存在且不容忽视。本文在明晰区域能源安全概念,辨识区域能源安全与国家能源安全内涵的基础上,系统地构建了中国区域能源安全评价指标体系,并选取了广东与陕西作为能源输入与输出区代表,在借助因子分析法的基础上,对1995年-2008年两省能源安全展开实证分析。实证结果表明：①陕西能源供应稳定性不断提升,而广东则日趋恶化,陕西能源供应稳定性显著优于广东;陕西能源使用安全性先升后降,而广东呈平稳发展态势,广东在能源使用安全性方面具明显优势;②煤炭对外依存度、煤炭产消比、运输风险指数是目前影响区域能源供应稳定性的关键因素;单位GDP碳耗与能耗是影响能源使用安全的关键因子,能源消费多元化有助于能源使用安全性的提升。基于此,分别针对广东与陕西区域能源安全情况提出差异化的政策建议。 相似文献
4.
当今社会主要依赖于传统的化石能源,全球总能耗的74%来自煤炭、石油、天然气等化石能源.化石能源的应用推动了社会的发展,但资源却在日益耗尽.同时,化石能源的无节制使用,造成了严重的环境和气候变化问题.可再生能源与新能源作为清洁、可持续利用的能源,为解决人类未来能源供应问题提供了重要的途径和手段. 相似文献
5.
中国能源消费结构与能源安全关联的实证分析 总被引：2，自引：0，他引：2
能源供应安全和使用安全是能源安全的两大组成部分。我国能源安全现状不容乐观,很大程度上是
由于不合理的能源消费结构造成的。本文将能源供应安全和使用安全作为衡量能源安全的目标,从传统能源和新
能源的能源消费结构出发,对1980年-2007年以来的各项指标展开回归分析。实证结果表明：①单位新能源消费
结构的变化对能源安全的贡献能力远大于传统能源;②自1980年以来,我国能源安全整体上呈现出“先抑后扬”的
走势;③我国能源安全形势依然严峻,突出表现在能源使用对环境造成的巨大的负面影响。最后给出政策建议。 相似文献
6.
能源供应安全是国家社会经济可持续发展的基础,直接关系着国家的稳定和谐。近年来,随着能源供需矛盾的日益严重,区域能源安全研究逐渐成为学术界的热点问题之一。本文运用系统动力学理论构建中国能源安全的系统动力学模型,通过对产业经济、资源、人口、环境子系统参数的调控,预测能源生产量、能源消耗量、能源供需缺口与能源战略储备等变量的动态变化,模拟得到三种我国能源安全系统的发展模式。研究结果表明:保持调控参数不变,我国现有能源安全系统的稳定性将难以持续;通过参数的调整,模拟得到方案1与方案2下的能源安全系统发展模式。相比方案current,从长远上看,因国家战略储备的增加,方案1下的能源安全系统稳定性较好;从短期角度看,方案2中的能源生产量持续增加,保证了能源安全系统的稳定性,但从长远上看,国家战略储备的减少将会威胁我国能源安全系统的稳定性。根据所得结果,提出建立国家能源统计管理账户、强化能源战略储备以及加快新能源与再生能源使用等措施以保证我国能源安全系统的稳定、健康发展。 相似文献
7.
建筑节能是当今世界各国普遍关注问题。它与能源结构调整、开发可再生能源利用组成能源战略的重点。发达国家建筑能耗占国家总能耗30-40%,如日本约为30%,美国约为35%。我国建筑的占国家总能耗25%,其中建筑使用能耗占总能耗9-11%,2000年已上升至13.6%。能源问题关系到国民经济的发展。当前,能源发展又面临着严峻的挑战,能源供应和经济发展的矛盾日益突出。 相似文献
8.
本文分析了我国能源紧缺的严峻形势和煤炭产业在国民经济发展和能源安全战略的重要地位,特别指出实施煤炭资源的国际化延伸战略和国家实行煤炭资源战略储备和保护性开采是煤炭资源两大重要国家战略。论证了其与国家能源安全的重要战略意义,这是实现科学的发展观和涉及国民经济与社会发展可持续性的重大前瞻性问题;提出在国际上特别是煤炭资源赋存丰富的发展中国家投建煤矿、延伸能源供应链,确保我国能源供应的多样化、多渠道;在战术和战略层面上,提出我国现阶段优质煤炭资源实行保护性开采和储备的可行性与紧迫性,为真正解决我国煤炭产业国际化和国家能源与经济安全的长远大计所面临的实际问题提供决策依据。 相似文献
9.
当前,装备建设主要面临着装备能耗结构不合理、对化石能源依赖度高、资源消耗量大、资源浪费和环境污染等突出问题,亟需采取有效措施,突破资源约束对装备发展的制约。基于此,本文首先提出装备资源性的概念,旨在满足各项军事要求的基础上,装备所具备的缓解资源短缺与环境危害、促进资源节约和环境友好的能力。本文将装备的资源使用、环境影响情况视作装备的一种属性来研究,建立了装备发展与资源环境的有机联系。资源性是装备的设计属性,通过源头控制,促进装备资源的循环利用和高效利用,使装备天生具备促进资源节约、环境友好的能力;装备资源性与作战能力和保障能力相协调,并拓展了传统全系统、全寿命和全费用的范畴。通过深入研究装备资源性的内涵,在装备设计中实施资源性设计,可产生显著的资源与环境效益、军事效益、经济效益,意义重大。 相似文献
10.
正能源是国家经济社会可持续发展最重要的物质基础之一,能源安全与可持续发展是国家重大战略。党中央高度重视能源安全战略,习近平总书记在党的十九大报告中提出,"推进绿色发展""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""着力解决突出环境问题""打赢蓝天保卫战"。当前全球能源发展处于从化石能源向低碳的可再生能源及无碳的自然能源快速转变的过渡期,能源结构呈现出"传统能源清洁化,低碳 相似文献
11.
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.
《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
13.
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
14.
《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
15.
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
16.
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
17.
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
18.
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
19.
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
20.
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