网络技术

Distributed interactive simulation technology has developed for decades andapplied to diverse industries. It is now enhanced with the development of computerhardware and network technology, and also modeling technology, virtual realitytechnology, software technology, and so on. On the other hand, people are bringingforward more and more requirements on distributed interactive simulation applications.Supports of distributed simulation systems are required on applications that involves inmassive complex simulation environment and large quantity of simulation nodes andentity objects, such as military simulation, online games. These requirements ask forhigh scalability of simulation support platform.

随着计算机硬件和网络性能的显著提高，现代建模技术、虚拟现实技术和软件技术等技术的发展，给已经发展了几十年的、深入各行各业的分布式交互仿真注入了新的内容和活力；而在另一方面，随着社会的进步，人们对分布式交互仿真的需求也越来越广泛，要求也越来越高，特别是在军事仿真、网络游戏等领域涉及到大规模仿真环境和大量仿真节点及实体的应用，需要分布式交互仿真系统的支持，这就对仿真支撑平台的可扩性提出了较高的要求。

Through the utilization of advanced computer technology, multimedia technologies, simulation technique, profited from the design concept of the Simens TIA, with the aid of Tomcat, Microsoft SQL Server, WinCC Web Navigator, SIMIT, this system achieved the crasis of the industrial ethernet directed net and information network, constructed a distance laboratory with remote control, monitoring, management as one, and used the JSP technical to complete the distance laboratory website.

该系统运用了先进的计算机技术、多媒体技术、仿真技术，借鉴西门子全集成自动化的设计思想，通过使用Tomcat软件、Microsoft SQL Server软件、西门子WinCC Web Navigator软件、SIMIT仿真软件等，实现了工业以太网控制网络与信息网络的融合，构建了一个集远程控制与监控为一体的远程实验室，并使用JSP技术设计完成远程实验室网站，实现了实验室信息的共享。

In terms of memory hierarchy, we investigated how to improve the cache hit rate and localize data according to the characteristics of cache, master memory, local disk and remote disk in cluster systems. As for communication, features of cluster systems and different cluster internal networks are examined. Two popular parallel programming models - message passing model and share memory model - are analyzed in terms of how do they affect the cluster performance and how can we improve the cluster performance.

在处理器层面，分析了现代处理器中常用的一些技术，包括超线程技术、超长指令技术和NUMA架构等，对不同特点的程序的性能影响和如何充分利用处理器中的一些技术提升性能；在存储层次上，结合机群系统上Cache、主存、本地辅存及网络存储的存储层次的特点，分析了数据局部性、Cache命中率等对性能的影响以及提出如何提高数据局部性；通讯系统层面分析了不同机群通讯系统及不同机群通讯网络的特点；在编程模式方面，分析和比较了目前最常用两种并行编程模式--消息传递编程模式和共享存储编程模式，在机群系统上对性能的影响因子以及提出如何提高性能的方法。

Once more, on the text this paper studies and discusses the fundamental, including network accounting connotation, similarities and differences of network accounting and traditional manual accounting and CAIS, technology criteria of network and some advantage; influencing, on trad- itional accounting theory(mainly focusing on, general principle etc.), ob- taining and making use of information; specialty, risk and precautionary, and so on. it puts forward the consult and sug- gestion.

再次，在主体部分围绕网络会计的基本原理(包括网络会计的内涵、网络会计与传统手工会计和会计电算化的异同、网络会计系统的技术标准、及其具有的优点)，网络会计对传统会计理论的影响(集中在会计的核算前提条件、核算一般原则等方面)，网络会计下会计信息的获取与使用，网络会计具有的特殊性及由此产生的风险和防范措施等若干方面进行详细的研究和探讨并阐述个人的基本观点，从而为网络会计在我国的健康顺利发展及为经济建设服务提供有益的参考和建议。

Some technological problems in designing equipment network MIS were introduced, such as network database technology, asp technology, report forms templet technology and MIS security measures.

介绍了仪器设备网络信息系统开发中的若干技术问题，如网络数据库技术、超文本技术、报表模板技术和系统安全措施。

Integrating technology in fields such as sensing,MEMS,wireless communication and parallel information processing,wireless sensor networkscan easy realize the purpose of temperature monitoring totally in real time through integrate micro sensors. After information is acquisited,the embedded module processes the signals and then the data is sent out to the terminal through self-organized wireless networks.

中文摘要：无线传感器网络综合了传感技术、MEMS技术、无线通信技术和分布式信息处理技术等，能够通过各类集成化的微型传感器，实时、全方位地监测被测对象的信息，通过嵌入式系统对信息进行处理，并通过自组织无线通信网络，以多跳中继方式将所感知信息传送到终端。

At the rest of this paper, the following information are given: introduction to the variation of user status on the server; process of dynamic modifying to rule of packet filtering; the application of design patterner in implementation of rule table of packet filtering.

同时，本文还详细地介绍了使用原始网络插口技术接收和发送网络数据包的技术，客户端服务器端之间加密通信实现的过程，使用设计模式技术保证包过滤规则列表的唯一性等一些该方案在具体设计和实现中涉及的技术、问题和解决方法。

The wireless sensor network has attracted great attention of the world, and is an emerging researching area with multi-discipline interleaving. It intergrates sensor technology, embedded computation technology, network and wireless communication technology, distributed information processing In real time, It detects, apperceives and collects the information of various enviroments or objects with the collaboration of kinds of IC sensors.

无线传感器网络是当今国内外备受关注的、由多学科高度交叉的新兴前沿研究领域，它综合了传感器技术、嵌入式计算技术、现代网络及无线通信技术、分布式信息处理技术等，能够通过各类集成化的微型传感器协作，实时监测、感知和采集各种环境或监测对象的信息。

At first This paper formulates the necessity for depurating network information content,and introduces the history of information security and study point in information security.Also this paper analyses in detail the key technology of content filtering such as data frame capture,bridge, network protocol analysis and content analysis.And then this paper comes up with the solution for content filtering facing application layer which is based on the technology of protocol analysis and format conversion in combination with text filtering techonology of Multiple Patterns Matching..Also this paper amplifies on the design and the implement method of each module.Finally this paper introduces how the client of content filtering system manages the keywords and log and makes suggestion for the improvement of the system.

本文首先阐述了对网络信息内容净化的必要性，介绍了信息安全的发展过程以及当前信息安全方面的研究重点，详细分析了内容过滤的关键技术，如数据帧捕获、网桥、网络协议分析和内容分析等方面的技术，然后提出了在Windows2000下实现基于协议分析技术，结合多模式匹配的文本过滤技术，面向应用层的内容过滤解决方案，并给出了内容过滤引擎的详细设计以及各个模块的实现方法，最后介绍了内容过滤系统客户端对有害信息关键词和日志的管理以及对本系统改进的一些建议。

Wireless sensor network is a wireless network without infrastructure, which ingrates sensor technology, embedded compute technology, distributed information processing technology and wireless communications technology.

无线传感器网络是一种无基础设施的无线网络，综合了传感器技术、嵌入式计算技术、分布式信息处理技术和无线通信技术。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。