基于工作流的集中测量系统框架研究

电信障碍集中受理自动测试系统(以下称CTS系统)是电信行业中一个重要的业务支撑系统,它接受固定电话用户、专线用户、宽带用户等故障投诉,并对故障进行检测、维修,同时也对交换设备、测试设备故障进行维修。这些受理、测试、维修等工作既可以由计算机自动完成,也可以由人工参与来完成。为此,采用了工作流技术、CORBA技术构造了本地网故障集中受理自动测试系统框架;利用工作流管理系统进行电信运营商业务过程建模、业务过程处理;利用CORBA技术存取部门间的共享信息;利用Internet、XML和服务代理在企业间进行信息交互。     

文化差异与英语教学

英语教学应重视我们同英语国家社会文化差异的研究。在特定的场合使用恰当的语言,首先必须了解对方的语言交际习惯和标准。     

故障受油器影响下灯泡贯流式机组非线性振动特性

针对故障受油器引发的灯泡贯流式机组事故,为提高机组运行的安全性和稳定性,基于构建复合偏心影响下不平衡磁拉力模型,建立多振源激励下含故障受油器灯泡贯流式机组轴系模型及其运动微分方程.应用数值计算方法分析有无故障受油器系统动态特性的差异,对系统在励磁电流、气隙静偏心以及动偏心变化过程中的非线性振动特性进行研究.结果表明：故障受油器的存在虽加大了转子非稳态运动范围并激发转子不利振动形式,但其对抑制系统振幅、削弱谐波成分表现出一定的积极作用,使机组受迫振动程度得以减缓;相比于数值固定的静偏心,随机组转动而不断变化的动偏心可使系统产生拟周期、周期二等丰富的动态响应形式,并进一步缩减了系统整体稳定运行范围,需引起足够重视.研究结果可为灯泡贯流式机组安全运行及稳定性分析提供一定借鉴.     

Analysis of fast optimization algorithm for inverse detecting faulty insulators

In order to improve the computational efficiency of the insulator electric field inverse problem, the fast multi-pole method has been introduced to the traditional simulation charge method. Tikhonov regularization is used to process the ill-posed characteristic of inverse problem solution caused by the interference. Newton method is used to search the optimum solution, and then the actual field source parameters of insulators and the practical voltage distribution on the surface of the insulators can be obtained. The fast optimization algorithm has been verified in point charge model. And 110 kV insulator string is carried out to demonstrate that the fast optimization algorithm is much faster and more efficient than traditional method.     

Fault Line Selection for the Distribution System with the Adjustable Arc Suppression Coil

The problem of the faulty line selection with the arc suppression coil(ASC) has existed for a long time.On the basis of analyzing the relationships between the ASC admittance and the admittances of lines,including the faulty line and non-faulty lines,the calculation of the b parameter is presented,in which the state of the ASC is changed during the single-ground existing for the faulty line selection by adjusting its inductance.The value of b for the faulty line is much greater than that for non-faulty lines in both the direct ground and the ground with the resistance.The proposed method is verified with the simulation and is applied to the projection.It is proven that the proposed method is with the high reliability.     

空调监测系统的数据恢复方法的研究

故障数据或丢失数据的及时恢复，对空调系统的可靠、最优运行是非常重要的．本文提出用主成分分析法对正常运行条件下的原始数据建立模型，该方法将测量空间分为主成分子空间和残差子空间．当数据故障或数据丢失发生时，故障数据被投影到主成分子空间和残差子空间，通过多次迭代，逐步逼近主成分子空间的方法可实现数据恢复．用空调监测系统实例充分显示了该方法有良好故障数据与丢失数据恢复能力．     

基于无线传感器网络拓扑结构的林火监测定位的应用研究

无线传感器网络的发展为林火监测提供新的计算模式。大量部署在监测区域中的传感器节点,可以通过自组织的方式形成无线传感器网络,实现对监测区域信息的感知,其中目标的定位技术已成为目前研究热点之一。由于受环境、硬件故障和障碍物等诸多因素的影响,传感器节点所采集的数据传输过程中易产生较大误差,形成错误数据,从而对定位造成严重影响。尽管有众多定位算法和模型,但针对联合拓扑结构实现定位的研究还较罕见,针对此问题,利用网络（几何）拓扑结构信息,提出一种用局部信息刻画全局分布密度信息的定位模型。     

电脑显示器消亮电路原理与维修

彩色显示器关机消亮点电路,是彩显电路中必不可少的一部分。本文就关机消亮点的形成、关机消亮点电路的工作原理、发生故障的原因及检修方法予以探讨。     

由复杂定语引起的语病之辨析与修改

复杂定语是指一个中心语之前有两个或两个以上的简单定语.复杂定语因其结构复杂,往往容易引起语病.结合实例分析了由复杂定语引起的语序不当、并列不当、搭配不当、成分残缺、重复累赘等5种典型的语病,提出了辨析与修改这类病句的3种方法--换序法、层析法和类比法.     

The Fault Tolerance Technology in HC 1 Handhold Computer

A type of handhold computer that has been researched successfully is introduced as the application case and practical usage effect about fault tolerance technology in the machine. At the meantime, it can be as a usage for reference while the same type of machine brings in fault tolerance technology in order to increase its reliability. So, it has greater availability and extended character.