1,264 research outputs found

    Energy rebound effect: theory model and empirical studies

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    随着能源供需矛盾与环境污染对中国可持续增长的制约日益明显,如何促进节能减排是学术界和政策制定者关注的焦点问题。一般认为,提高能源效率可促进能源节约,并被视为可同时解决“环境可持续性”、“能源安全”和“能源公平”的战略性举措;且技术进步是提高能源效率的关键途径。然而,能源效率并不等同于能源节约,通过提高能源效率导致的节能量往往不同于预期,这种差异在理论上被称为的能源效率悖论或能源效率缺口,亦即实证文献中的能源反弹效应理论。本文从方法论和实证分析两个维度对中国宏观层面的能源反弹效应进行研究。全文的研究工作和结论及其创新意义概况如下: (1)应用不同的理论和方法的研究结果均表明,中国不同经济部门的...It is becoming evident that energy shortages and environmental pollution have become the main constraints on China’s sustainable growth. How to promote energy conservation is the focus of academics and policy-makers. Generally speaking, improving energy efficiency can promote energy conservation, and it is considered as a strategic measure to address the “environmental sustainability”, “energy sec...学位:博士后院系专业:经济学院_能源经济学学号:201417001

    In-situ Electron Microscopy Study of Sodium Ion Storage and Transport in Carbon Nanofiber Anodes

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    原位电镜技术(In-situElectronMicroscopy)近年来发展迅速,在微纳米尺度的材料研究中发挥巨大作用,特别是能把材料的物性和微观结构直观地一一对应起来,这为深入理解能源存储与转换器件的微观过程提供了强有力的手段钠离子电池是一种应用潜力巨大的二次电池,相比锂离子电池有原料丰富、生产成本低的优点。但是因为钠离子较大的离子直径和较低的荷质比,还需进一步寻找合适的电极材料并探究其工作机理。碳纳米纤维是硬碳材料,石墨化程度低,导电性和机械性能较好,能够快速地嵌入和脱嵌钠离子,是一种优秀的钠离子电池负极材料。静电纺丝法制备纳米纤维因工艺简单、成本低廉、适合大规模生产而受到广泛关注。因此,...As a rapidly developing technique, in-situ electron microscopy plays an important role in the study of micro and nano scale materials due to its unique capability of direct linking, the properties and the microstructures of materials, thus providing a powerful tool for deeper understanding of the mechanism of energy storage and conversion devices. Sodium ion batteries have attracted great interest...学位:工学硕士院系专业:萨本栋微米纳米科学技术研究院_微电子学与固体电子学学号:3352014115242

    Optimization of fermentation parameters for heterotrophic growth and DHA accumulation of Schizochytrium sp. TIO1101 and physiology-biochemistry characteristics of transgenic Schizochytrium

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    二十二碳六烯酸(Docosahexaenoicacid,DHA)是一种具有重要生理意义和经济价值的高不饱和脂肪酸,其传统的制备方法是从深海鱼油中提取。但是,深海鱼油因鱼类资源供应限制,DHA含量低,提取得到的DHA有鱼腥味等缺点,难以满足市场需求。因此,开发新的DHA来源已成为相关研究的重点。裂壶藻是一种异养海洋微藻,具有不饱和脂肪酸组成简单、DHA含量高、易于培养、对人畜无毒害等优点,成为近年来DHA工业化生产领域研究的热点。 本论文利用本实验室分离自红树林的一株裂壶藻藻株Schizochytriumsp.TIO1101,研究了培养基组分、培养时间和环境因子对其生长和DHA含量的影响;在选...DHA (Docosahexaenoic acid) is a kind of polyunsaturated fatty acids with vital physiological functions and high economic values. More and more attention has been paid on production and preparation process of DHA, However, conventional fish oils may not be suitable to meet the increasing demand for DHA owing to their limited supply, lower content of DHA and peculiar taste and odor. Schizochytrium s...学位:理学硕士院系专业:生命科学学院生物学系_生物化学与分子生物学学号:2172009115206

    Study on the Warranty System of Marine Insurance

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    海上保险保证起源于17世纪的英国海上保险实践,在英国《1906年海上保险法》(以下简称英国MIA1906)中得到了详细规定。我国《海商法》第235条首次将其引入,成为我国海上保险法中的一项重要制度。海上保险保证具有严格履行的特性,在历史上曾促进了海上保险事业的发展。但近几十年来,随着科学技术的进步和经济的发展,它的弊端也逐渐显现出来,为了适应这种新的情况,各国立法和司法实践上相继对本国的海上保险保证制度进行修改或变通。本文在总结中国和英国有关海上保险保证及其相关法律规定的基础上,结合当今国际海上保险业中保证的发展趋势,对我国海上保险中保证制度的完善提出修改建议。 本文共分为引言、正文与结语等...Warranty in marine insurance was originated from the Britain marine insurance practice in the 17 century. Britain MIA 1906 stipulated the warranties in detail. Warranties were first time introduced into the Art.235 in China Maritime Code(CMC), which became an special system in China marine insurance legislations. Warranty has the characteristic of stern performance, which boosted the development o...学位:法学硕士院系专业:法学院法律系_国际法学(含国际公法、国际私法、国际经济法)学号:X200512003

    Research on Business Components in Commercial Bank and Their Applications

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    在经济全球化发展的大背景下,开放和竞争已经成为世界金融发展的主流,银行业的全球竞争日益激烈,商业银行的流程、产品和服务都发生了重大变化,业务的快速变化对业务建模技术和技术的灵活性提出了更高的要求。因此,对商业银行中业务构件研究具有重要的积极意义和广泛的应用价值。近年来,信息技术的发展极大地影响和促进了商业银行的变革和发展,使商业银行成为高度依赖信息资源和信息技术的产业。构件思想其核心是通过构件的重用、组合、配置、替换,适应业务的变化,增强业务模型的灵活性和可扩展性。我国商业银行从业务范围到业务运作模式和协作模式,均与国际先进水平有较大差距,国内商业银行的经营管理正发生剧烈而又高速的变化,业务发...In the development of economic globalization context, opening and competition have become the mainstream of financial developments over the world. The global competitions of banking industry are of increasingly fierce. The processes, products and services of commercial banks have been changed significantly, which demand higher standard and flexibility to the business modeling technology. Therefore...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X200623003

    Complicated relation between the constitutional government and democracy

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    从民主的角度对宪政进行定义是一种普遍的方式。因为,民主和宪政具有和谐关系。这既体现在二者在理论基础、制度设计和价值目标上的相同之处,又体现在民主能对实现宪政的目标即限制权力有援助作用。但这种亲和性并不能掩盖民主与宪政潜在的差异。它们二者间甚至还可能存在潜在的冲突关系。因此,民主与宪政处于复杂的关系当中。It is a nature way to define constitutionalism from the perspective of democracy since there is intrinsic relationship between these two concepts.They have something in common as to the bottom basis and values.However,The difference between them has to be discovered by employing other concept such as freedom.The relationship between them may be contrasting as well as harmony

    Analysis on the Legal Dimensions of " SHANZHAI" Phenomenon

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    “山寨”现象已经潜隐在社会的众多层面。理论界对于“山寨”的面相存在着多元解读,诸说纷陈。但对于何谓“山寨”一直缺乏体系地梳理,对于“山寨”关涉的理论问题缺乏系统化的思考,对于“山寨”风行的原因缺乏理性地省思,对于问题解决路径的讨论也甚为稀少。进行法律维度分析的前提应该是先在一个相对准确的奠立于大量具体事物归纳而来的抽象概念。但“山寨”这一语词并非一个精准的法律概念,包涉范围的不断扩充,附加意义的不时变动,都使得它很大程度上难于被界定和把握,这也是造成理论研究难以拓展的一个重要原因。 职是之故,在本文的第一章试图对“山寨”的概念进行详致地厘定,描述了大众视野里的“山寨”现象,并从一个全新的视角...In recent years, “SHANZHAI” Phenomenon was appeared, and hiddened in many of social aspects..Anybody cannot ignore the possibility of “SHANZHAI” in future world orientation. There are many ideas about it in theory, but lack of systemly explain what is “SHANZHAI” ,and lack of problem solving path for “SHANZHAI”. So, in the first part of it, I tried to explain the concept of “SHANZHAI”in detailed, ...学位:法律硕士院系专业:法学院法律系_法律硕士(JM)学号:1362008115081

    梁启超的两种进化论及其政治含义

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    梁启超的很多政治思想和主张是建立于进化论的思想基础上。梁启超进化论的思想,除了从康有为那里采纳了三世大同说这种进化论之外,他还从严复那里接受了达尔文的进化论。然而,我们从梁启超思想的两种进化论中,发现这两种进化论之间其实是有差异的。因此,要成为一个融贯的思想体系,梁启超必须有一种策略,以将二者融合起来。他确实做到了这一点,并进而为其整个政治思想体系打下了基础

    方案与方法:柏拉图和亚里士多德国家理论的比较

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    柏拉图和亚里士多德分享了一个共同的时代背景,面对共同的社会动荡问题,他们提出了不同的国家理论以实现社会稳定。尽管解决问题的方案不同,他们在解决问题的思考方法上却是一致的,那就是他们的焦点始终在伦理学,始终希望从社会伦理学的道德路径来解决政治动乱问题。Sharing the common backgrounds and social instabilities,Plato and Aristotle argued for different kinds of country theories in order to make the society under control,but they employed the same kind of method focused on ethics in which they believed could help to solve their problems confronting them

    三种自由观

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    自由不仅仅是自由主义所关注和捍卫的价值,社群主义及共和主义也重视自由在价值体系中的地位和作用。它们与自由主义的论争可以在自由这个概念的平台上得到解释。在自由的问题上,它们与自由主义的论争关键不在于要不要自由,而在于“自由是什么“,更进一步可说成:它们为“什么是对自由的限制“这一问题提供了不同的回答
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