Design and Implementation of an E-government System Based on SOA

信息化社会使得公众对信息的接入越来越便捷，与此同时也为信息管理带来了机遇和挑战。真正面向服务、高效的电子政务系统是政府组织部门全面提升服务水平和服务质量的基本保障。 本课题中，针对当前电子政务系统的国内外现状及传统电子政务信息系统进行了分析，将SOA的思想引入到电子政务系统的使用中，利用面向服务的架构集中主要解决两个关键问题：一是原有系统的复用及接入问题，二是以面向服务的思想合理设计布局应用的问题。研究工作包括： 1、以某政府部门案例需求为例，基于MVC即Model（模型）、View（视图）、Controller（控制器）模式，对电子政务系统进行了整体设计，系统整体主要包括了用户管理，公文...It is more and more convenient for the public to access to information with the evolution of booming information society. It also brings lots of opportunities and challenges for information management. So an Electronic Government System (E-government system) which is effective and service-oriented is the foundation of governmental organization to enhance service level and quality. This disserta...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201123057

The study on AMS measurement of 129I in air and sea sediments and its geochemistry

129I(T1/2=15.7Ma)是放射性碘中半衰期最长的同位素。有天然和人工两种来源，在人类还没有利用原子能的时代，环境中大部分的129I是宇宙射线和大气中的氙进行核反应以及238U的自发裂变产生。天然129I/127I比值在3×10-13-3×10-12水平，但由于人工129I的输入，环境中129I的含量水平显著提高至少两个数量级，释放源主要来自核燃料后处理厂。从129I的物理性质看，可以有多种129I测量方法，像γ谱方法、液闪方法(LSC)、中子活化方法(NAA)、普通质谱方法(MS)等。但这些方法的129I丰度探测限仍都大于10-9，仅可以用于核设施周围环境或核设施流出物等高放环境中1...129I has the longest half life with 15.7Ma among the iodine isotopes which consisits of both natural and artificial origin. Before the nuclear age, 129I in the environment is mainly produced by the nuclear reaction with Xe isotopes and by the spontaneous fission of 238U. The pre-anthropogenic natural ratio of 129I/127I is 3×10-13-3×10-12, but human activities have obviously elevated this ratio by ...学位：理学硕士院系专业：海洋与环境学院_海洋化学学号：2242010115132

巴西的对外援助及其管理体系

随着经济实力的提升,巴西正由净受援国逐步向援助国转变。近十年来,巴西对外技术援助发展迅速,三方合作模式成为新兴援助国的典范,在国际援助体系中的影响力也越来越大。本文从巴西对外援助的目标、原则及战略的视角,分析了新世纪以来其发展援助特点及趋势,并对其援助管理体系进行分析和总结

中国对外援助项目的组织与管理

中国目前已初步形成了以商务部为援外归口管理部门的援外管理体系,以企业总承包责任制的援外管理制度,包括企业资格认定、援外项目立项、项目实施招标、项目监督、验收与移交以及实施结果评估等一系列规制为内容的援外项目管理程序。在未来的发展过程中,中国对外援助工作应注重加强援外项目质量、建立科学合理的监测评估机制、加强各层面的协同统一。一、中国对外援助项目管理的责任划分当前中国援外项目的组织与管理工作主要是由商务部援外司及国际经济合作事务局根据宏观和微观、决策和执行的科学合理划分的原则进行的。2011年度教育部“新世纪优秀人才支持计划”; 2011年度教育部哲学社会科学研究后期资助重点项目《负责任的主权借贷行为研究——国际规则与中国对策》(项目批准号:11JHQ007)资

印度对外援助的特点和趋势

近年来,随着经济实力的提升,印度对外援助规模不断扩大,在国际援助体系中的地位也越来越重要,并且逐步形成其对外援助管理体系。本文从印度对外援助的原则、动机及政策入手,分析了新世纪以来印度发展援助的趋势及特点、援助管理体系的组织框架,以及今后的发展方向

IPO Underpricing or Overpricing——An Empirical Study Based on Equity Structure

针对近几年频发的IPO破发现象,选取2009~2011年718家中国A股上市公司作为研究样本,从股权结构特征以及影响IPO定价参与方的议价动机和能力入手,考察了股权结构与IPO抑价或破发的关系。研究发现,管理层持股比例与IPO抑价无显著关系,而与IPO破发显著负相关,体现出管理层持股的“利益趋同效应“;相比于非国有企业,国有企业IPO抑价程度更高,且IPO破发的概率更低,反映出国有企业管理层可能存在通过IPO抑价确保发行成功来获取政治声誉和寻求未来政治升迁的动机。Based on the frequency of IPO overpricing in recent years,this paper collects 718 Chinese A-share listed companies from 2009 to 2011 as research samples and examines the relationship between equity structure and IPO underpricing or overpricing,from the perspective of equity structure which embodies and affects bargaining motivation and ability of IPO pricing participation parties.The results indicate that managerial ownership is not related to IPO underpricing significantly and on the contrary negatively related to IPO overpricing,showing "the Convergence of Interest Effect".Compared to non-state-owned enterprises,the state-owned enterprises have a higher level of IPO underpricing and a smaller probability of IPO overpricing,implying that state-owned enterprise managers may employ IPO underpricing to ensure the successful issue to obtain political reputation and seek future political promotion.国家自然科学基金项目“全球金融风暴背景下中国企业财务决策行为研究”(70972110

The Geometric Structure of Nonlinear Least Square Solution for Signal by Complex Exponents and Alternate Algorithm

本文给出了复指数信号模型非线性最小二乘解的几何结构 .从分析迭代算法的收敛性态入手得到解的几何结构 ,将有助于构造十分有效的迭代算法 .另外 ,本文在低信噪比 (10dB)及较小频率差 (0 0 2Hz)的情况下 ,对迭代求解的收敛控制条件进行了研究The geometric structure of nonlinear least squares solution for signals by complex exponents is offered in this paper.Beginning with analysis for the convergent state of alternative algorithm solving two equations together contented by the model's nonlinear least squares solution,the recognition for geometric structure of nonlinear least squares solution is acquired.It would help to construct a fully effective algorithm and understanding for the solution's structure is deepened.The alternative algorithm presented by this paper is fully effective in higher SNR or when the difference of frequency in model is slightly increased.Nevertheless,the invalid convergence (large error) appears in the condition with lower SNR(10dB) and smaller difference of frequency (0 02 Hz),if the convergent control condition of alternative algorithm is only in accordance with varying quantity of least squares error

科研学术大数据的精准服务架构设计

【目的】研究面向科研学术大数据的精准服务架构, 解决科研学者获取精准知识服务的问题。【方法】通过分析互联网应用精准服务现状, 从数据组织、技术方法、应用场景三个方面, 归纳对比精准服务的方法, 面向科研学术生态链条设计精准服务体系。【结果】精准服务架构设计梳理关联了数据生产、技术研发、应用服务环节, 支撑了科研学术的精准搜索与推荐服务应用。【局限】该架构未与传统方法对比, 还需结合实际应用评测验证精准性提升效果。【结论】本文解决了精准服务技术方法的单一性问题, 为应用系统研发提供系统的架构支撑。</p

Signal Reconstruction Based on Compressed Sensing

随着信息技术的不断发展,人们对信息需求量越来越大,这给信号采样、传输和存储的实现带来的压力越来越大。近年来国际上出现的压缩传感理论为该问题的解决提供了新的解决方案。压缩传感理论首先将信号投影到一个低维的信号空间,然后通过解一个基于凸优化的非线性恢复算法将信号恢复,而仅仅需要很少的数据。介绍了CS理论框架并对其中存在的难点问题进行了探讨,主要有稀疏近似理论、观测矩阵、信号重建算法。最后将压缩传感理论应用到一维和二维图像数据重建中并给出了仿真结果。实验结果表明,该方法与传统压缩方法相比具有更高的压缩比,并且能够得到更小的压缩误差。With the development of information technology,the demands for information are increasing dramatically,which causes a series of challenges in signal sampling,transmission and storage.An emerging theory of compressed sensing(CS),which is presented in recent years,provides a new method for solving this problem.CS project a singnal into a lower dimension at frist,then by using nonlinear recovery algorithms(based on convex optimization),super-resolved signals and images can be reconstructed from what appears to be highly incomplete data.Introduces the processing of the signal sparse representation,observation matrix and recovery algorithms and focus on the theoretical framework of compressed sensing and discusses the existing difficult problems.Apply this new theory to data of one dimension and image of two dimensions and give the simulated result in the end.Experiments proved CS is higher compression ratio and smaller compression error than traditional data compression algorithm.国家自然科学基金(30770561

比赛项目排序问题的贪婪算子遗传算法

摘要:将比赛项目的排序问题转化为图论问题中的货郎担问题( TSP) ,利用TSP 较为成熟的遗传算法进行 求解。这样防止了搜索过程陷入局部最优。针对遗传算法收敛速度慢的特点, 对遗传算法进行了改进, 引入贪婪交叉算子来加快算法的收敛速度, 得到冲突总人次数为8 的优良结果。在对算法进行合理性分析时, 从理论上论证了算法的优劣