746 research outputs found

    New Devices for Droplet Generation and Their Application in Single-Molecule Amplification and Single Cell Manipulation

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    单分子、单细胞是生物体系的最基本单位。分子之间的不同决定了其引发反应的不同,细胞之间的不同决定了生命活动的不同。因此,深入研究单分子和单细胞对人们探索生命活动本质是十分必要的。与传统研究对象不同,单个分子、单个细胞的研究需要更加精准的研究平台,从而避免大背景的干扰,提高信噪比。微流控芯片,是一种将常规反应小型化、集成化新型的技术。其具有反应迅速、反应体积小、信噪比高、通量高、结果精准、试剂节约等特点,这些优点十分符合目前对单分子、单细胞研究的要求。因此在近些年来,微流控芯片技术在单分子、单细胞分析领域得到广泛的发展。 虽然微流控平台在单分子、单细胞的研究领域内,已经展现了良好的应用价值和实用...Single molecule and single cell are the basic units in the process of biological systems. Molecular and cellular difference are important factors determining the response and activity of life. Therefore, it is necessary to explore the nature of life activity at the singlemolecule and single-cell level. Distinguished from the traditional research objects, single molecule andsingle cell research nee...学位:理学硕士院系专业:化学化工学院_化学生物学学号:2052013115166

    Study of Performance Evaluation of Public Finance Expenditures on Poverty Alleviation

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    反贫困是全世界范围内关乎实现人类最基本生存权和发展权的重要议题,在我国更是实现共同富裕的、全面建设小康社会的本质要求。改革开放以来,我国开展的数次扶贫计划已取得丰硕成果,其中公共财政扶贫资金发挥了重要作用。 本文在理论分析基础上,结合现状,以综合评价的方式对比考核了2003-2010年公共财政扶贫支出的绩效水平,进而提出相关政策建议。 理论分析部分,首先界定了贫困、贫困标准和扶贫资金等概念,然后从公共财政理论、委托代理理论和新公共管理理论三方面阐述了公共财政扶贫支出绩效评价的理论基础,最后,解析了公共财政扶贫支出绩效的内涵,为评价指标体系的设计提供了依据。 现状分析部分,本文梳理了财政扶...Anti-poverty is an important issue relating to the most basic human rights of survival and development around the world. In China, it is the essential requirements of achieving the common prosperity and building a moderately prosperous society. Since the reform and opening up, poverty alleviation programs in China, in which public financial funds played an important role, has made great achievemen...学位:经济学硕士院系专业:经济学院财政系_财政学(含税收学)学号:1552010115176

    Research on Intergovernmental Non-tax Revenue Competition

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    随着我国财政分权体制的确立与完善,地方政府间的财政竞争也随之形成。财政竞争主要表现为税收竞争和支出竞争,两者共同导致了地方财政“紧运行”的局面。与此同时,大部分非税收入并未纳入中央和地方间财政关系调整的范畴,非税收入因此成为了地方政府获取补充财力的重要渠道。当各地方政府竞相扩张非税收入以缓解财政压力时,地方政府间非税收入竞争就可能由此产生。现有的研究并未对非税收入竞争存在性及其影响予以关注。因此,本文尝试从地方政府竞争的视角来研究非税收入,以进一步揭示我国财政竞争的全貌,并为未来的非税收入改革提供有益建议。全文结构如下: 首先,本文对我国地方政府非税收入竞争的形成条件进行了分析,从“中国式分...With the establishment and improvement of fiscal decentralization system in China, the fiscal competition between local governments has also been formed. This competition which mainly includes tax competition and competition expenses results in fiscal stress. Because most of the non-tax revenue is not shared by the central and local government, local governments tend to regard non-tax revenue as a...学位:经济学博士院系专业:经济学院_财政学(含税收学)学号:1552011015376
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