The biotoxic effect of ZnO nanoparticles on three zooplankton

纳米氧化锌（ZnO-NPs）因其特殊的理化性质而在化妆品、医学抗菌、工业涂料等领域被广泛应用。其通过工业生产、商品使用、空气沉降、运输泄露、地表水径流等途径直接或间接汇入海洋环境，对海洋的生态系统构成潜在威胁。海洋中的浮游动物可以通过摄食影响或控制初级生产力，同时它们的种群动态变化又影响许多鱼类和其他动物资源群体的生物量。开展纳米氧化锌对浮游动物的毒性效应研究，对于了解纳米材料在水体中行为、评价浮游动物对纳米材料的响应、实现纳米材料环境危害性的合理评估具有十分重要的意义。 本研究选取了典型模式种日本虎斑猛水蚤、广泛分布的安氏伪镖水蚤和枝角类代表蒙古裸腹溞这三种浮游动物进行混合培养，分析ZnO...Zinc oxide nanoparticles is widely used in cosmetics, medical antibacterial, industrial coatings and other fields because of its special physical and chemical properties. It is directly or indirectly imported into the marine environment through industrial production, commodity used, air sedimentation, transport leakage, surface runoff, posing a potential threat to marine ecosystems. The zooplankto...学位：理学硕士院系专业：海洋与地球学院_海洋生物学学号：2232014115136

Intellectual Property Rights Protection and Dual Margins of Enterprise's Export Growth in China

基于企业异质性贸易理论框架,本文首先从理论上分析了出口市场的知识产权保护对企业出口二元边际的作用机制。随后,利用2000—2006年中国海关统计的企业出口数据将出口增长分解为扩展边际和集约边际,运用扩展的贸易引力模型实证考察了知识产权保护和不同类型的贸易成本对出口二元边际的影响。结果表明,知识产权保护通过降低企业出口的固定成本提高了扩展边际,但降低了集约边际,知识产权保护主要通过扩展边际促进了出口增长。本文还发现,经济规模、固定贸易成本、地理距离主要通过扩展边际影响出口。上述结论对于区分不同贸易方式、不同所有制企业和不同知识产权保护测算指标的估计依然稳健。It analyzes the impact mechanism of intellectual property rights protection on the dual margins of enterprise's export with the framework of heterogeneous firm trade theory. Then,it decomposes the export growth into extensive margin and intensive margin by using the firm export data from 2000 to 2006 in China,and investigates empirically the effect of intellectual property rights protection on the dual margins of export by using the extended trade gravity model. The results show that the extensive margin is improved by reducing fixed cost of export enterprise because of the intellectual property rights protection,while the intensive margin is decreased. And the intellectual property rights protection promotes China's export growth mainly through extensive margin. In addition,the effects of economic size,fixed trade cost and geographic distances on China's export growth also exert mainly through extensive margin. The above results are robust for the estimation of different trade modes, different ownership firms and different indicators of intellectual property rights protection.国家社会科学基金青年项目“知识产权保护对我国对外贸易的影响及政策研究”(11CJY073)、国家社会科学基金重大项目“经济持续健康发展与收入倍增计划的实现路径研究”(13&ZD029);; 中央高校基本科研业务费专项资金项目“知识产权制度对中国进出口贸易增长的作用机制与影响路径研究”(20720151181)的资

Benchmark-problem investigation for seismic response of a large-span cable-stayed bridge based on nonlinear stochastic optimal control

大跨度斜拉桥Benchmark问题的振动控制研究是当前国际结构控制研讨会的重要议题之一。以美国Bill Emerson Memorial斜拉桥第二阶段Benchmark模型为研究对象,在非线性随机动力学与控制的拟哈密顿理论体系框架下,运用基于随机平均法和随机动态规划原理的非线性随机最优(NSO)控制策略,对地震作用下的Benchmark模型进行MATLAB仿真分析。将最优控制力和性能评价指标与线性二次型Gauss(LQG)控制的计算结果进行对比,得出非线性随机最优控制策略能够更加有效地抑制斜拉桥的地震响应,提高结构的动力稳定性和抗震能力,具有更好的控制效果,对实际桥梁工程的振动控制具有较强的指导意义和适用价值。Investigation of vibration control for benchmark problems on large-span,cable-stayed bridge is one of the most important research topics in the current International Symposium on Structural Control. This paper studied secondstage benchmark problems on the Bill Emerson Memorial cable-stayed bridge. In terms of Hamiltonian theory for nonlinear stochastic dynamics and control, the benchmark model under seismic excitations was investigated using MATLAB simulation analysis,based on the stochastic averaging method and stochastic dynamic-programming principle. Comparison of analysis results for optimal forces and performance-evaluation indices between the nonlinear stochastic optimal( NSO)control strategy and the linear quadratic Gaussian( LQG) control strategy revealed that the former control strategy mitigates the seismic response of the cable-stayed bridge more effectively than the latter,thereby enhancing structural dynamic stability and earthquake resistance. In conclusion,the NSO control strategy demonstrates better control effect and presents instructive references and practical significance for vibration control of bridge-engineering applications.福建省青年人才项目(2008F3100

台湾における生死学の文化的思考

日台国際研究会議「東アジアの死生学へIV」, 2011年10月7日, 国立中山大学社会科学院, 高雄第二部. 司会 越建

Investment Structure in Human Capital and Effect on Economic Growth

本文针对已有的关于人力资本投资的理论研究往往只关注人力资本投资数量而忽视人力投资结构研究的现状,把教育和健康看作是两种资本,分析了人力资本投资的具体构成形式。假设人力资本由教育资本和健康资本按照CobbDouglas生产技术形式组合生成。通过扩展Mankiw、Romer和Weil(1992)模型(简称MRW模型),构建了一个内生经济增长模型。理论分析结果表明,人力资本投资结构制约着经济增长,人力资本投资数量和结构都对经济产生重要影响。最后,本文以理论分析为基础构建计量经济模型,利用1978~2004年中国29个省市的面板数据实证分析了教育资本和健康资本对中国经济增长的影响。Most current theory researches of investment in human capital pay more attention on investment qualitity but fewer on investment structure, so the paper analyzes the specific form of investment in human capital in condition that education and health are two kinds of capitals .The paper hypothesizes education capital and health capital hold the form of C-D and constructs an endogenous economic growth model. Then the paper analyzes the relationship between investment structure in human capital and increment in human capital. The results show that investment structure in human capital restricts economic growth , quantity and structure in human capital have important effect on economic growth. In the end the paper takes advantages of Chinese Province panel data to test the effect of education capital and health capital on economic growth

On Word-by-word Practice in Notating the Pinyin of the Quadrisyllabic Idioms in Contemporary Chinese Dictionary

成语的注音和拼写历来引起很大争议。《现代汉语词典》作为规范语文词典 ,在成语注音方面有自己的特色。它强调成语按词分写 ,并且很注意成语内部成分的文言特点。本文利用计量手段 ,对《现代汉语词典》成语注音的按词分写情况进行定量分析 ,凸现特色 ,找出不足 ,促使《现代汉语词典》成语注音能更加完善。Intense arguments have arisen on the phonetic notation and pinyin spelling of quadrisyllabic idioms. As a standard dictionary of language and writing, Contemporary Chinese Dictionary (Xiandai Hanyu Cidian) shows some distinctive features in notating the pinyin of the quadrisyllabic idioms, paying much attention to the features as residue of Archaic Chinese in the constitutive elements of the idioms and notating them word by word. This article offers an analysis of the word by word notating practice in this dictionary using a quantitative approach, managing to indicate its shortcomings in this respect so that this already high quality dictionary could be further improved

《现代汉语词典》96版四字词修订的计量分析

《现代汉语词典》修订版问世之后 ,在社会上反响很大。大家普遍认为这次修订变动很大 ,也有了很多的改进和提高。但是 ,这次修订的力度如何 ?本文拟使用计量分析方法 ,考察四字词的修订状况 ,借以反映这次修订的优点及不足之处

句首时间词语的成分分析

时间词语在名词性词语中比较特殊 ,出现在句首时应当看作什么成分 ,历来引起很大争议。本文试图引用句法、语义、语用三个平面的理论 ,结合结构和意义对句首的时间词语进行成分分析。本文认为 ,句首时间词语既能充当句子的内层结构成分 ,也能充当句子的外层结构成分 ,即作主语、状语和全句修饰

Research on Vibration Control for Benchmark Problem of Wind-Excited Tall Buildings

随着我国经济的快速发展和人民生活水平的不断提高，城市化进程日益加剧。为了解决更多城市人口的居住问题，高层、超高层建筑大量兴起。众所周知，地震和飓风是严重危害人类的自然灾害。尤其是最近20余年全球发生了许多大地震和强烈龙卷风，造成了非常惨重的生命财产损失。由于人们不能事先准确地知道将来可能遇到的外荷载的大小和特性，而按传统方法设计的结构不具备根据外荷载的变化而变化的自我调节能力，因此即便是按很高的抗震设防烈度来设计，也很难保证高层、超高层结构在遭受到地震作用或飓风侵袭时的安全性。近年来迅速发展的结构振动控制技术为解决上述问题提供了一种有效的途径。因此高层、超高层结构的地震、风振控制研究，是摆在结...With the rapid development of our economy and the increasing improvement of people's living standard, the urbanization progress is sharpening. In order to solve the housing problem for more urban population, high and high-rise buildings are built in a large amount. As is known to all, earthquakes and hurricanes are natural disasters seriously harmful to human beings. Especially in recent 20 years ...学位：工学硕士院系专业：建筑与土木工程学院土木工程系_工程力学学号：2532008115179