73 research outputs found

    Idiosyncratic Risk and the Cross-Section of Returns:An Empirical Study of China Stock Market

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    近年来,关于股票特异性风险与横截面收益率的关系的理论得到很大发展,特异性波动率是特异性风险的度量指标,很多实证研究都发现股票的特异性波动率与横截面预期收益有显著的负相关关系。在经典资产定价理论中,投资者可以通过持有充分分散的投资组合来消除公司特异性风险,因而公司的特异性风险不影响资产的均衡定价;在Merton(1987)建立的基于不完全信息的资本市场均衡定价模型中,受不完全信息、市场摩擦等因素的制约,大多数投资者不会持有充分分散的投资组合,因此就承担了部分不能被分散的公司特异性风险,并要求获得更高的回报作为补偿,因而股票特异性风险与预期收益正相关。因为这些经典理论并不能解释风险与收益负相关的实...In recent years, the theory on the relationship between idiosyncratic risk and the expected cross-section stock return witness great development. Idiosyncratic volatility is the measure of idiosyncratic risk and many empirical studies find there is a negative relation between cross-section returns and idiosyncratic volatility. In the classical asset pricing theory, investors can hold fully diversi...学位:经济学硕士院系专业:王亚南经济研究院_金融学(含保险学)学号:2772007115227

    Business Model Innovation Study of Guozheng Tax Agents Firm

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    本文将对翁君奕教授的《商务模式创新》理论和其他一些理论进行回顾和简介,并运用其主要理论观点分析整个中国税务师事务所行业的商务模式,和国(境)外税务师事务所行业的商务模式进行相关对比,提出中国税务师事务所行业的商务模式创新的形势要求;同时对本区域的厦门市国正税务师事务所的基本情况进行介绍,对其现状进行分析,解剖其目前的商务模式,提出其创新的价值主张,同时探讨其实现价值主张的价值支撑和价值保持,对商务模式的创新进行新的构建探讨,提出建设性的建议,从而对整个税务师事务所行业的商业模式进行一些探讨。This dissertation reviews and introduces Professor Weng junyi’s Business Model Innovation Theory and other related theories, and analyses business model of Chinese tax agent firm industry by using main ideas and methods of the theory. Requirements of business model innovation of Chinese tax agent firm industry have been raised based on comparison with business model of foreign counterparts. This p...学位:工商管理硕士院系专业:管理学院高级经理教育中心(EMBA项目)_高级管理人员工商管理硕士(EMBA)学号:X200715603

    Study on the fiscal support of China's outward foreign direct investment

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    发展对外直接投资对中国积极参与经济全球化,充分利用国内外两个市场、两种资源,实现资源优化配置,全面提高对外开放水平,实现“走出去”经济发展战略以及贯彻国家资源安全战略,具有极其重要的意义。但是,对外直接投资是一种高风险的国际经济活动,以往较少涉足国际生产经营领域的中国企业,在对外直接投资活动中必然会遇到一系列问题和困难,如信息、资金、投资风险等问题,需要政府的干预和支持。财政支持是政府干预和支持对外直接投资的主要手段,包括财政资助、税收优惠、政策性金融支持等。本文从分析对外直接投资的财政支持来阐述如何完善中国对外直接投资的财政支持政策,全文分为六个部分。第一部分阐述了选题的背景和意义、文献综述...Developing China’s outward FDI has great senses for China on the aspects of taking part in economy globalization, making the best use of domestic and abroad markets, optimizing resource allocation, enhancing openness, implementing macro-economy development strategy and carrying out national resource security strategy, etc. However, outward FDI is of high risks. For the China’s enterprises who rare...学位:经济学博士院系专业:经济学院财政金融系_财政学(含税收学)学号:B20024101

    Research on the Mechanism of Balance of Interests in Copyright Law under the Internet Circumstances——Focusing on the Balance between the New Contents of Copyright and the Public Interest of Fair Use

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    互联网的出现使著作权法面临一个挑战与机遇并存的局面。之所以说是挑战是因为著作权法在互联网的冲击下手忙脚乱,一些制度的设计面临现实的拷问;同时,著作权法也伴随网络的发展而酝酿进化的可能性,这是著作权法发展的机遇,著作权法将因此而更加富有生命力和魅力。本文以利益平衡的精神为线索,探讨网络环境下著作权法的利益平衡机制的重构。通过分析网络环境下著作权的一些新权能和公众合理使用利益的重构,期望二者以利益平衡为基准达到科学、合理的制约、平衡和互动。本文除前言和结语外,分为四章:第一章先简要论述利益平衡的基础理论,然后充分阐述著作权法的利益平衡理论(特别是网络环境下),建立了本文的宗旨和框架,也为下文的展开...The emergence of Internet causes Copyright Law to face a situation of challenge and chance. The challenge is as follows: Copyright Law is hurry-scurry since hit by the Internet, and some designs of its system face the conflict of the practice. Meanwhile, Copyright Law gives birth to possibilities of evolution going with the development of Internet. This is the chance of the development of Copyrigh...学位:法学硕士院系专业:法学院法律系_民商法学(含劳动法学、社会保障法学)学号:20030806

    Topographic mechanism for onshore transport during summertime in the Northern South China Sea

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    在近岸陆架区,地形是诱导海水跨陆架输送的一个重要因子。本文在前人理论研究基础上,发展并推导出包括非线性对流作用和底摩擦作用在内的较为完整的地形理论公式。公式揭示了近岸陆架区跨陆架输送的地形机制。 地形诱导跨陆架输送的地形公式包括两个部分,分别是零阶涡度对流作用和底摩擦作用。零阶相对涡度的非线性对流过程会产生贯穿整个水体的跨陆架输送,具体包括水深梯度二阶导数的变化、等深线曲率的变化、地形坡度的变化以及在强剪切流速区域等深线的辐散或辐聚的作用。底摩擦力作用产生的跨陆架输送主要存在于底部边界层,包括底部Ekman泵吸作用和底部Ekman输送,前者受地形诱导的零阶相对涡度的影响,具体为水深梯度二阶导...In the continental shelf region, topography is an important factor for cross-shelf transport. Based on the previous studies, a formulation is proposed to evaluate the topographically inducing onshore transport related with the advection and friction effects. The theoretical equation explains the relationship between topography and the vertical/cross-shelf transports. When the flow in zero order ...学位:理学硕士院系专业:海洋与环境学院环境科学与工程系_环境管理学号:2262009115119

    论西方现代派绘画反传统的内涵及其意义

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    学位:文学硕士院系专业:艺术教育学院美术系_美术学学号:19982200

    边际革命对公共财政学的影响

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    本文论述了边际效用理论与公共财政学的关系,并分析了边际效用理论对现代公共财政理论的形成和发展的具体影响

    股票特质波动率与横截面收益:对中国股市“特质波动率之谜”的解释

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    本文对中国股票市场特质波动率与横截面收益率的关系进行经验研究,探讨"特质波动率之谜"是否存在。我们发现,中国股票特质波动率与横截面收益率存在显著的负相关关系,但在控制了表征异质信念的换手率后,这种负相关关系消失了。这种现象的产生主要是因为在卖空限制和投资者异质性的共同作用下,资产价格会被高估从而降低未来的收益率,造成了中国市场上的特质波动率之谜

    Effect of double abutment absorption of alveolar bone in rigid fixed bridge on the stress distribution of abutments

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    目的:探讨固定桥双基牙侧牙槽骨有不同程度水平吸收时,基牙牙周膜的等效应力值和分布的变化,以指导临床固定桥的合理设计。方法:采用螺旋CT扫描技术与MIMICS、AnSyS软件相结合建立双基牙侧牙槽骨有不同程度水平吸收后的三基牙双端固定桥的三维有限元模型,施加垂直和斜向45°载荷,分析双基牙侧牙周膜的应力分布状况。结果:1斜向载荷下各模型应力值均大于垂直向载荷时的应力,应力集中现象也较垂直向载荷时明显;2在垂直或倾斜载荷下,有牙槽骨吸收的第二前磨牙侧增加牙周组织健康的第一前磨牙时,应力均变大以分担牙合力;若增加的第一前磨牙有不同程度的牙槽骨吸收,垂直载荷时应力值变化不大,斜向载荷时应力值减小,但应力集中现象较无吸收时明显。结论:增加牙槽骨有不同程度吸收的基牙不能有效地发挥分散牙合力的作用,不适合做固定桥基牙。加载方向是影响应力分布的重要因素,应注意防止产生过大的侧向力。AIM: To investigate the stress distribution of abutment tooth periodontal ligament when there are different levels of alveolar bone resorption at the abutment teeth with rigid fixed bridge design.METHODS: A three dimensional finite element model with different levels of alveolar horizontal absorption at the abutment teeth was established by CT scanning using Mimics 8.1 and Ansys 11.0.Vertical and oblique loading was added to test stress the distribution at the abutment teeth.RESULTS: When the periodontally healthy first premolar was added as additional abutment tooth,vertical loading and oblique loading could result in more evenly distributed stress.However,when alveolar bone resorption existed in first premolar,little stress distribution change was observed at vertical loading.But oblique loading led to more concentrated stress.CONCLUSION: Adding an abutment tooth with alveolar bone resorption can not improve stress distribution,hence it is not suitable for rigid fixed bridge.The direction of loading seems to play a significant role in determining stress distribution.The oblique force on the bridge should be avoided or reduced as possible.厦门市科技局资助课题(3502Z20094013

    灾害护理课程的设计与实践

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    2009-2010 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe
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