分布式系统

In this paper, the third part of the Distributed Application System Remote Control System applications.

本文第三部分介绍了分布式应用系统在远程监控系统中的应用。

The higher demands are made on the intrusion detection technology with the increasingly noticeable problem of the network security, but the existing intrusion detection has some limitations facing with the fast change of attack technology. Then on the basis of analyzing some representative IDS the shortcomings existing in traditional IDS are presented, such as being lack of distribute distributivity,flexibility,interoperablility.

网络安全问题的日益突出对入侵检测技术提出了更高的要求，然而现有入侵检测技术面对攻击技术的飞速变化仍然存在一定缺陷，入侵检测系统在很多地方还有待改进，如分布式、灵活性、效率等方面，需要探索新的技术来提高入侵检测系统的整体性能。

Petri Nets is a graphics and digital system modeling tool, which provides an efficient way to describe and analyze the complex system that is concurrency, asynchrony, distributivity, or nondeterminacy.

摘 要：Petri网作为一种图形化、数学化的系统建模工具，为描述和分析具有并发性、异步性、分布式、非确定性等特征的复杂系统提供了强有力的手段。

The invention relates to distributivity phoneme communication system and network connecting method applied in residential district. It includes management layer, middle layer, and user layer. The management layer includes center monitoring controlling main engine and supervisor used to monitor, control, and supervise the whole system.

可应用于住宅小区的分布式语音通讯系统及网络连接方法，包括管理层、中间层和用户层；管理层，包含中央监控主机和管理机，负责整个系统的监控与管理；中间层，包含门口机，作为管理区域的辅助划分管理单位；用户层，包含用户机，负责与住户的交互。

In this paper,we present the framework of client/server computing in DNC systems,and the implementation procedure using RPC.An example is also discussed.

本文给出了在分布式网络DNC系统中实现客户/服务器体系结构的系统框架，以及运用RPC实现的过程，最后讨论了一个实例。

The main contributions of this dissertation are In chapter 2, we propose a scientific visualization system modal which is based on large-format display technology and Client-Commware-Server structure. In chapter 3 and chapter 4, we accomplish two large-scale scientific visualization systems. In chapter 5 and chapter 6, we propose HFFT on hexagon and parallel dodecahedron domains, and reduce the computational complexity from O and O to O and O . Lastly, we propose a parallel HFFT on distributed memory computers.

本文的主要贡献如下：提出了使用大屏幕显示技术、适用于大规模科学计算可视化系统的Client-Commware-Server模型；实现了油藏数值模拟和分子模拟两个大规模科学计算的可视化系统；给出了二维三方向六边形区域、三维四方向十二面体区域上的HFFT算法，将变换的计算复杂度分别从直接计算的O和O量级降到了快速算法的O和O量级；最后，本文给出了一种基于分布式存储的并行HFFT算法，并对影响、提高并行算法的若干因素进行了分析。

The massive DGIS has great meaning to share and interoperation of geospatial data, share and distributed processing of geographic operation services, and integration of domain application.

大型分布式地理信息系统对于基于网络的海量空间数据的共享和互操作、地理操作服务的共享和分布处理以及专业领域应用系统的集成，具有十分重要的意义。

Based Web rapeseed production of high-quality and high efficiency expert system development examples, ASP technology and DCOM technology to achieve good in the production of knowledge of the rules before and after pieces of pieces of multimedia knowledge integration and control, and for the procedures and distributed multimedia expert system platform for seamless integration.

详细说明：本文结合Web油菜优质高产高效生产专家系统的开发实例，运用ASP技术和DCOM技术很好地实现了在产生式知识规则的前件和后件中多媒体知识的融合及其控制，并实现了多媒体程序与分布式专家系统平台的无缝集成。

Avionics and control systems for aircraft and automobile use distributed, fault-tolerant computer sys-tems.They are composed of different functions.

飞机或汽车上使用的电子设备和控制系统都是分布式的、容错的计算机系统，它们是由各种功能模块组合构成的。

Service test proves that HIT-501 fault-tolerant computer satisfies the requirements of high performance, high reliability, and high availability, and verifies the accuracy and utility of the redundancy management technique for distributed fault tolerant computer system.

HIT-501容错计算机系统经实际运行测试，证明了它满足航天容错计算机的各项要求，同时也验证了本文所提出的分布式容错计算机系统冗余管理技术的正确性和实用性。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐