733 research outputs found
Underwriter-Auditor Social Connection and IPO Auditor Choice——Evidence from China IPO Market
我国IPO市场普遍存在信息不对称问题,券商和审计师作为缓解信息不对称的外部治理机制,其职能是确保拟上市公司披露真实可靠的信息,帮助投资者做出合理投资决策。然而,近年来我国IPO市场券商和审计师业务捆绑现象愈演愈烈,即券商频繁选择特定审计师搭档合作进行IPO项目。财经媒体认为券商和审计师频繁业务合作关系会导致长期利益输送,并将之归为IPO财务造假的原因。学术界对券商和事务所业务捆绑现象给出了两种竞争性解释,一种是认为业务捆绑会导致合谋,正所谓“人熟好办事”,过往的合作关系会降低他们合谋的成本,券商和审计机构出于成功推动IPO的目的,有动机协助上市公司操纵盈余,降低拟上市公司的财务信息质量,进而损...Information asymmetry is a noteworthy matter in Chinese IPO market. Underwriter and Auditor ,as important mechanism to alleviate the information asymmetry between issuers and investors in order to help investors make reasonable decision .Recently the financial media blame the phenomenon that underwriters display obvious preference on certain auditors which will lead to the delivery of long-term in...学位:管理学硕士院系专业:管理学院_会计学学号:1752013115114
Experimental Study on the Interfacial Turbulence Phenomena
在气—液相际传质过程中,由于界面处物质传递而使界面液体物化性质发生改变,将可能产生界面处流体运动,即界面湍动。一般认为界面湍动的起因为密度变化导致的Rayleigh–Bénard效应和表面张力变化导致的Marangoni效应。 本文分别使用投影法和纹影法,对垂直和水平于界面两个方向上的双组分溶液挥发传质过程界面湍动对流结构进行了实验观察。观测结果显示,Rayleigh–Bénard效应和Marangoni效应引起的对流结构特征明显不同:Rayleigh–Bénard效应引起的对流结构主要为羽状对流,对流附近流体运动缓慢,且不断向液相深处发展,而Marangoni效应引起的对流结构为涡流结构,...During the mass transfer process, the concentration gradient induced by the mass diffusion usually can produce the surface tension gradient and the density gradient. These may cause the interfacial turbulence. In general, the interfacial turbulence is attributed to the Rayleigh–Bénard effect and the Marangoni effect. In the volatilization process of the binary systems, the convection structures o...学位:工学硕士院系专业:化学化工学院化学工程与生物工程系_化学工程学号:2062006115202
The Elementary Introduction to Moving Mechanism of Rural Land Use Right
中国经过20多年的改革开放,农村社会主义市场经济体制框架初步建立。农村土地使用权流转作为实践中降生的新事物,在取得积极的经济和社会效益的同时,又不可避免地出现许多亟待明确的理论与实践问题。如近年来在农村经济发展过程中出现侵犯农民利益、大量耕地抛荒弃耕现象、以及土地使用权流转的弱市场化等问题。因此,研究农村土地使用权流转以及实现土地资源的优化配置具有现实意义。 本文首先概述了国内外学界关于农村土地使用权流转的研究简况,明确了农村土地使用权流转的内涵及动因,从当前我国农村土地使用权流转的现状和存在问题出发,阐明农村土地使用权流转市场化是我国社会主义市场经济发展的客观要求,以制度变迁理论和土地产权...Abstract After the 20 years’ policy of reforming and opening to the world in china, the frame of country socialism economy has been established. The Moving Mechanism of the Rural Land Use Right, as a new comer in the real practice, has appeared some theories and practice problem which need be clarified clearly, although there are some active economical and social benefits. For instance, the behav...学位:经济学硕士院系专业:经济学院经济系_政治经济学学号:X20034308
An Empirical Study On the Relationship between Corporate Income Tax Avosion and Firm Value
本文在国内外上市公司所得税逃避现象普遍存在的情况下,探寻逃避税程度对企业价值是否存在影响以及影响程度,并且这种影响在不同治理水平的公司中是否存在差异。笔者在国内外相关研究的基础上,构建委托代理理论框架来阐述公司所得税逃避与企业价值之间可能存在的关系,奠定理论基础。并通过运用中国上市公司公布的财务数据来实证研究逃避税程度、企业价值以及公司治理水平之间的关系,得以证实上述理论推导。 本文的研究分为四大部分:第一部分即本文的第一、二章,介绍了本文的研究背景、意义、研究内容和研究方法,并对国内外研究该问题的文献做了综述。第二部分即本文的第三章,对公司逃避税与企业价值相关理论进行简要阐述,并对理论进行...In the background where tax avosion case is quite common home and abroad, we want to explore whether the corporate income tax avosion affects firm value and how much it affects, and whether this effect will change between companies with different governance level. We are very interested in these problems. On the basis of the relative research literature, we analyze the relationship between the cor...学位:经济学硕士院系专业:经济学院_财政学(含税收学)学号:1552010115176
Research on Active Infrared Laser Night Vision Imaging System on Cars
汽车在夜间行驶时,由于普通汽车照明光照射距离不远,驾驶员视距较短,缩短了司机的应急反应时间,使得驾车危险性大大增加。为此,开发新型汽车红外夜视系统已成为业界人士的共识。针对目前市场上的夜视系统结构复杂,价格昂贵、抗干扰性能较差及传统主动式夜视系统的不足,本课题进行了系统分析并提出创新性的解决方案,设计了一种性能稳定、抗干扰能力强、图像信噪比高、性价比高、适用性强的主动式红外偏振激光夜视成像系统。本文主要研究特色及创新点如下:1.采用激光、偏振光、光学滤波以及调制等多种技术集成,研制成功一种抗干扰能力强、图像清晰度的高性能主动式红外偏振激光夜视成像系统。2.基于偏振消光的原理,采用偏振光成像技术...Because the fields of common illumination in the cars are limited, the drivers can't response in time at night, which greatly increases the driving dangers. In order to solve this problem, many researchers have developed new night vision system for cars. But commercial night vision systems in the market are complex in structure, low anti-jamming and very expensive. According to the shortcomings of...学位:工学硕士院系专业:物理与机电工程学院机电工程系_精密仪器及机械学号:2005130172
Research on Comprehensive Budget Management System in Commercial Banks—Based on the Comprehensive Budget Management in ABC Bank
全面预算管理作为对现代企业成熟与发展起过重大推动作用的管理系统,是企业内部管理控制的一种主要方法。这一方法自从上个世纪20年代在美国的通用电气、杜邦、通用汽车公司产生之后,很快就成了大型工商企业的标准作业程序。从最初的计划、协调,发展到现在的兼具控制、激励、评价等诸多功能的一种综合贯彻企业经营战略的管理工具,全面预算管理在企业内部控制中日益发挥核心作用。正如著名管理学家戴维•奥利所说的,全面预算管理是为数不多的几个能把企业的所有关键问题融合于一个体系之中的管理控制方法之一。 我国当前商业银行的财务管理机制较为普遍的还是财务指标式的单一计划管理方式:商业银行总行制定全行的年度总体经...Comprehensive budget management played a significant role in promoting the maturation and development of modern enterprise management system, internal management control is a primary method. This approach since the 20's of the last century in the U.S. General Electric, DuPont, General Motors, soon became the standard operating procedures of the large industrial and commercial enterprises. From the...学位:会计硕士院系专业:管理学院_会计硕士(MPACC)学号:X200815704
A study on the vicissitude of the relations between Taiwan Peasant Association and Political party
在当代政治学的研究中,利益集团一直是很重要的研究领域。在西方民主代议制国家,利益集团是政治过程的重要力量,利益集团通过相互间的竞争、通过捐款、游说等行为影响政治决策过程。新制度主义是当代西方政治学研究的前沿领域,特别是其中的理性选择制度学派,由于引入方法论的个人主义、理性选择、博弈论等建构精美的理论架构,具有一定的解释力,成为当今重要的西方政治思潮之一。理性选择新制度主义理论从经济人的假设出发,分析个人与制度的关系,为我们研究政党、利益集团等政治主体在政治过程采取政治行动的新视角。 台湾农会作为一个典型的社团性利益集团,一直是大陆和台湾学者关注的研究主题。在国民党威权时期,农会一直是国民党和...In western democratic countries ,the interest group is an important power which puts a great impact on the process of political decision-making by way of inter-competition, donation and lobbying. As the frontiers of the study of the western modern political science, the Neo-institutionalism which has the ability of explanation has become a main trend of thought in the field of the western politic...学位:法学硕士院系专业:台湾研究所_中外政治制度学号:2702005130263
美、日两国农地经营制度变革及启示
农地流转是市场经济条件下生产要素自由流动以实现资源最优配置的客观需要。本文通过对美、日两国农地经营制度变革的探讨,从中得到促进我国农地流转的许多有益的启示
智能障礙學生問題行為之調查研究
[[abstract]]本研究係以自編之問題行為量表探討456位智能障礙學生的問題行為出現率與嚴重程度,以及是否會因不同的性別、教育階段以及障礙程度等因素的影響而有不同。量表內容計有七大行為類型,內含二十小項問題行為。問卷填寫者係該班任教的導師。研究結果指出,智能障礙學生的問題行為出現率並不低,至少在百分之二十以上。在二十項問題行為中,「拒絕」、「擅自」和「推人」等三項的出現率是高達百分之五十以上;在七大問題行為類型中,以「反抗行為」的整體出現率最高,達54.95%。在二十項問題行為中,僅有「膽怯」行為的嚴重性較低,其餘的行為均屬嚴重;在七大問題行為類型中,以「怪異行為」的平均得分最高,為4.64。整體而言,相較於性別和教育階段,障礙度對於智能障礙學生問題行為的出現與嚴重性影響較大。
The purpose of this study was to investigate the incidence and seriousness of challenging behaviors of 456 students with intellectual disabilities. A self-developed questionnaire having seven types of challenging behaviors with twenty items was filled out by the special education teachers teaching in elementary and senior high schools. The results indicated that the incidence and seriousness of challenging behaviors of students with intellectual disabilities were as high as considered. Among the twenty items, the item of "rejection of doing assignments", "doing things on purpose" and "attacking classmates" respectively had the incidence of more than 50%. The "bizarre behavior" with an average of 4.64 of a 9-Likert scale was the most serious one among the seven types of challenging behaviors. Compared with gender and grade, the severity of handicapping condition was the most important variable affecting the incidence and seriousness of challenging behaviors of students with intellectual disabilities
Research of SAR Image Reconstruction Algorithm Based on Compressive Sensing
传统的Nyquist采样定理要求信号的采样频率不能低于模拟信号频谱中最高频率的2倍,这给采样的成本以及后续的处理与传输带来了很多困难。近年诞生的压缩感知理论,针对稀疏信号或可压缩信号,它的采样速率不取决于信号的带宽,而决取于信息在信号中的结构和内容,因此可以突破Nyquist采样定理的瓶颈。同时该理论在采样的同时直接获取压缩数据,这样可以减少采样数据,节省存储空间。 重建算法是压缩感知理论中的核心步骤,也是目前的研究热点。因此本文在对压缩感知理论整体框架进行研究的基础下,主要对重建算法中的贪婪迭代算法进行研究。本文首先对贪婪迭代算法中的经典算法——正交匹配追踪算法以及它的改进算法——基于小波...The sampling rate must be two times higher than the highest frequency of the analog signal based on Nyquist sampling theorem. This will increase the cost of sampling and lead to difficulty to process and transmit. Recently, a new sampling theorem called compressive sensing has been proposed. Based on this theoretical frame, the sampling rate for the sparse and compressive signal is not depend on t...学位:工学硕士院系专业:信息科学与技术学院通信工程系_信号与信息处理学号:2332009115282
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