489 research outputs found

    An Analysis of the Risk of Robust Recursive Updating Model

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    抗差递推校正模型在抵御流量异常值对实时校正精度影响方面效果明显,但同时也存在将真实值作为异常值剔除,校正误差更大的风险。利用蒙特卡洛方法,分析不同状况下,抗差递推校正模型风险与效果的关系。结果表明抗差递推校正模型的风险受异常值发生频率影响较大。Robust recursive updating model is insensitive to the outliers and is effective to stable flood updating accuracy.At the same time,it is risky to detect falsely good value as outliers.Based on Monte Carlo Method,the relations between risk and effect of model are obtained.The research results indicate that the risk of the model is affected by frequency of outliers.国家自然科学基金项目(50909084);福建省自然科学基金项目(2009J05107);厦门理工学院杰出青年科研人才培育计划资

    Research on the Relationship of Government Education Spending,Human Capital and The Growth of Resident

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    自改革开放以来,我国社会稳定,国民经济保持平稳较快发展,人们生活水平得到大幅度改善,居民收入快速增长,收入分配差距有所扩大。在对居民收入增长及分配产生影响的因素中,居民受教育程度是一个不容忽视的问题。教育促进人力资本的形成和积累,通过人力资本影响收入的增长及分配。在市场经济中,教育作为一种公共产品或准公共产品,需要政府投资的支持,政府的公共教育支出是保证教育发展的主导力量。因此,本文试图考察财政教育支出、人力资本与居民收入水平之间的关系。 本文围绕财政教育支出、人力资本和居民收入问题,基于现有的理论基础,运用1999-2011年31个省、直辖市和自治区的面板数据进行实证研究,具体包括以下四个...Since reforming and opening, China’s society stays stable together with the steady and rapid growth of national economy, the greatly improved people’s living standards, and the rapid growth of residents’ income. But in the meantime, the income distribute gap in China is expanding. Among the factors that may affect the growth and distribution of residents’ income, education is an important one. Tha...学位:经济学硕士院系专业:经济学院_西方经济学学号:1722010115205

    National Institute of Standards and Technology:Important Supporter of American Standards Activities and Technology Innovation

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    美国标准与技术研究院(NIST)是美国最具代表性的标准研究与技术创新组织。从其创立之初的技术引进,到重视检测工作和军事研究的快速发展,再到改革组织机构,重视基础研究,开展技术转移,促进企业创新,NIST近百年的发展奠定了它在美国标准活动和技术创新领域的重要地位。为了更好的促进技术创新,提高企业界的竞争力,NIST重视战略规划与执行,积极筹集资金。在标准活动方面,NIST六大实验室进行的基础性研究活动是其他标准制定组织开展工作的基石。同时NIST还被赋予官方标准民间化的重要职责。在技术创新方面,NIST一方面利用自身优势与中小企业开展合作研究,另一方面通过自身的信息优势,向企业介绍先进经验,提升...National Institute of Standards and Technology (NIST) is the most representative organization of measurement research and technological innovation. Activities, such as introduction of new technologies from Europe, focusing on testing work and military research, emphasis on basic research, technical transfer and business innovation, made NIST in an important standing in the standard and innovation ...学位:哲学硕士院系专业:人文学院哲学系_科学技术哲学学号:1042008115237

    Design and Implementation of the Course and Score Management System

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    随着社会经济的飞速发展,学校的教学质量也在不断的提高,大学期间涉及到许多公共选修课。然而江西某职业工程学院仍采用传统管理方式管理课程,这会造成学生选课的盲目性,且不便于学生更改课程,同时加大了教师管理的难度。考虑到现在该学院建立了比较完备的校园网络系统,故可以设计一个基于WEB的课程及成绩管理系统,学生可以通过此系统进行网上选课,并且可以方便地更改所选课程,教师也可以有效地进行管理,这样可以有效缓解教务部门的工作压力,提高教务工作效率,有效防止课程编排过程中的失误。 大量教师信息、学生信息、学生成绩信息等基本数据难以通过传统的方法进行管理,这就迫切需要利用现代计算机科学技术来帮助学校管理者处...With the rapid development of society and economy, the teaching quality of schools is continuously improving. Many public elective courses have been involved in the college period. However, a certain professional engineering institute in Jiangxi Province has still managed the courses in a traditional management manner, thus causing the blindness of the students in selecting the courses. It is not ...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X201123054

    Parameter estimation for Muskingum routing model based on robust algorithm

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    用于估计马斯京根模型参数的方法很多,但这些方法在数据存在异常值时缺乏抵御异常值影响的抗差性能.推导出一种有限制条件的参数抗差估计算法,通过含有随机误差和异常误差的人工数据和真实数据比较抗差算法与传统最小二乘算法的抗差性.研究表明抗差估计算法能减小异常值对参数估值的影响.There are a variety of techniques for estimating the parameters of the Muskingum routing model.However the robustness of these methods has to be questioned because of the tendency of outliers in data to strongly influence the outcome.A robust estimation has been presented.The robustness of this estimator has been compared with the least squares method by means of synthetic data sets,in which both Gaussian random errors and outliers have been introduced.The study demonstrates that the robust estimator has the potential to reduce estimation bias in the presence of outliers,and it has an advantage over the least squares method.SupportedbytheNationalNaturalScienceFoundation(50909084);theNaturalScienceFoundationofFujianProvince(2009J05107);XiamenUniversityofTechnology(YKJ08015R

    water resources exploitation management and flood robust forecasting methods in watershed

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    流域水资源的可持续利用要求水资源的合理开发、科学管理及水灾的有效防治。 水资源的可持续利用需要在水资源利用的规划制定阶段就进行环境影响评价。本文选取流域水电开发规划为案例,。量按响ering在系统总结国内外环境影响评价研究成果的基础上,选择九龙江流域作为研究区域,对流域水电开发规划进行战略环境评价。评价结果显示梯级水电规划对流域的不利影响主要表现在减少了河流的输沙量,枯水期增加了流域减水和脱水河段,大型水库库区存在水温分层;加剧了流域水环境的恶化,特别是对减水和脱水河段的影响;梯级水电开发规划严重破坏了流域水生生态系统;对社会经济的影响主要表现在缺乏规模效益、造成移民、淹没耕地。结合评价以及...Sustainable utilizing water resources requirements reasonable exploitation of water resources and effective flood control. The sustainable use of water resources need to assess environmental impacts at planning stages. Select watershed hydropower engineering plan for the case. The environmental impact assessment for watershed hydropower engineering plan is considered as a kind of strategic enviro...学位:博士后院系专业:海洋与环境学院环境科学与工程系_环境科学学号:BH1700013

    The Design and Implementation of Administrative Authority Website Group Management Platform

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    随着电子信息的不断发展,电子政务的应用也在不断的扩大,目前,各国行政机构陆续的将电子信息技术应用到行政机构的管理上来,以新的管理模式代替传统的管理模式,这将是新世纪行政机关的一个重大变革,面临着重大的机遇和挑战。各级行政机关都想让这个行政机关网站实现“信息的公开化、在线办事、公众参与”这三大功能,行政机构网站群建设的新目标就是以资源整合为中心,为了确保这个系统能够熟练实现,并且有实用性,把资源作为一个主线,最大化的实现资源的共享;设计这个系统的时候,坚持将平台设计的更加安全、先进、实用,还要注意他的高集成性和可扩展性,本设计采用的是比较先进的技术,以此来符合行政机构网站中的信息和系统的多样化需...With the continuous development of electronic information, the application of e-government is constantly expanding, at present, national administrations will continue to apply the management of electronic information technology, administrative agencies come up with a new management model instead of the traditional management model, which will be a major change in the new century, the executive, fa...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X201223046

    Study on the Investor Protection Mechanism of China: a Substitute Perspective of Accounting Standards

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    投资者保护对于一个国家证券市场的发展至关重要。我国的投资者保护水平在过去的20多年中虽有明显提高但与国际同类国家相比仍存在较大差距。新兴加转轨的经济特征决定了成熟市场经济条件下行之有效的几种投资者保护机制——市场机制、法律机制和政府监管机制——在我国尚不能充分发挥作用,于是替代机制便成为一种必需,而会计信息的定价功能与治理功能使得会计准则可以成为这样的一种替代机制。 会计准则作为替代机制,其对投资者的保护从如下几个层面展现出来:准则伦理、准则目标、准则规定的会计信息质量特征、准则信息披露、准则制定导向。在详细阐述上述机理的基础上,本文对我国会计准则20年发展过程中的投资者保护机制运行情况进行...Investor protection is essential for the development of securities market. Although China's level of investor protection has greatly improved, there is still a wide gap between China and similar countries. The emerging and transitional economy characteristics determine that several effective investor protection mechanisms in the mature market economy conditions - market mechanism, legal mechanisms...学位:管理学博士院系专业:管理学院会计系_会计学学号:1752009015323

    吊销会计执业资格的经济学与法理学分析

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    本文先后从经济学和法理学视角对会计执业资格的吊销进行了分析。结论认为,会计执业资格制度是以专业化分工与人力资产专用化为理论基础;出于收益成本考虑,对资格拥有者来说,吊销执业资格比罚款更具有威慑力;我国目前相关法规对吊销执业资格的法律规定存在漏洞,存在惩戒不公的现象

    Virginia LoCastro.2012.Pragmatics for Language Educators:A Sociolinguistic Perspective

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    从学科发展趋势来看,当代语用学日益呈现出跨学科、多视角的多维研究态势,各相关学科之间的交叉或界面研究不断涌现。由国际知名学者VIrgInIA lOCASTrO著写、rOuTlEdgE公司于2012年出版的《语言教育者的语用学-社会语言学视角
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