4 . base on the characteristic of network management system , we discussed vi the architecture of industrial ethernet network management system . we analyzed data - obtaining process of industrial field based on opc and put forward a new remote supervise system based on xml technology 4 、根据网络管理系统的特性，深入研究了工业以太网管理系统的体系结构，并对基于opc的现场获取进行分析，提出了基于xml的远程监控。
At last , the economic efficiency of this system was analyzed . the role of applying gas gis system , such as increasing management efficiency , enduring safe production , reducing resource waste , raising capital utilization ratio were discussed 然后本文对优化后西安市天然气公司管网管理系统的效率进行了经济分析，总结了燃气gis的应用对于提高管理效率、保证管网的安全运行、减少资源浪费、提高资金使用效率等方面的作用。
Distribution fault detection , islation and restoration system is an important part in the distribution management system ( dms ) now . with the growing need of the reliability of power system , electricity utilities pay more attention to the fault detection , isolation and restoration 配电网故障处理包括故障定位、隔离和恢复是配网管理系统的重要功能之一；在对供电可靠性要求更高的情况下，配电网故障处理系统已经为配电部门所迫切需要。
Based on the above theoretical research , this paper applied component gis method to develop the rural power distribution network management system of baoding city . laishui county as a case of practical application . in the advanced visual programming language - visual basic 6 . 0 development environment , we took advantage of america gis component - mapx4 . 5 to have implemented gis functions of the system in space data gathering , management , disposition , analysis , output , etc 在以上理论研究的基础上，本文以保定市涞水县农村配电网管理系统的建设为例，利用美国组件式gis软件? mapx4 . 5 ，结合高级可视化程序设计语言vb6 . 0 ，完成了系统在空间数据采集、管理、处理、分析、输出等方面的gis功能。
And then we should embed this agent software into the hfc devices . after that , this device will become an equipment managed based on snmp protocol . it is required to develop a useful hfc access network management system software works on windows or other familiar operation system such as linux and so on Snmp管理体系是基于管理者?代理的通信模型的，由于当前hfc接入网设备基本都不支持snmp协议，因此我们必须扩展一个snmp能够认知的hfc接入网设备代理，并将其嵌入到光节点设备中，然后在大家所熟悉的操作平台windows (或linux等)系统上开发一个基于snmp协议的hfc宽带接入网管理系统。
In this paper , the development of geographic information system and the current research hot topics were reviewed , the principles of component technology and its feature , the structure of component gis and the method of its redevelopment were discussed in detail . this paper alse compared the systems based on traditional gis and component gis seperately 本文在回顾了地理信息系统的发展和目前的研究热点基础上，详细阐述了组件技术的原理、特点和组件技术的演变，以及组件式gis的构成、特点、二次开发等，分析了传统gis开发农村配电网管理系统的缺点及组件式gis开发的优势。
