网络技术

The network security is an affected area very widespread question, the topic research content: The network security rank, the data encryption technology, the firewall technology concept, the function, introduced the network security faces main threat as well as question countermeasure, and through the example some company network analysis situs chart from the analysis network security movement environment explained the example plan as well as supplements four safe disposition.

网络安全性是一个涉及面很广泛的问题，课题研究的内容：网络安全级别、数据加密技术、防火墙技术的概念、作用，介绍了网络安全面临的主要威胁以及问题的对策，并且通过实例某公司网络拓扑图从分析网络安全的运行环境来说明实例方案以及补充四点安全的配置。

Electrician and electron experiment platform based on network and multimedia technology was introduced. The platform integrated with many advanced and modern technologies such as network information, communications, multimedia, database and so on. Platform was designed choicely from two sides of collectivity truss and schemed of software and hardware which had inimitable predominance on functions and technologies.

介绍了基于网络多媒体的电工电子实验，该平台集成了网络信息化技术、通信技术、多媒体技术和数据库技术等先进的现代化技术，并从总体构架和软硬件配置等方面进行了精心设计，在功能和技术上具备了独特的优势。

The first mobile communications network on the condition of the development, and then introduced the GSM editorial system theory, network characteristics, network optimization technology, concentric circle theory and a detailed presentation on the basis of existing GSM cordial applications, and this technology applications and the development prospects.

本文首先介绍移动通信网络的发展状况，然后介绍了GSM网络的系统工作原理，网络特性，对网络优化中同心圆技术的原理进行了详细的讲解及对在现有的GSM网络基础上的应用，并此技术的应用和发展进行了展望。

The main objective of this project is to research and develop a novel and high efficient video codec framework based on wavelet techniques, especially to address the heterogeneousness of video networks, the fluctuation of transmission bandwidth and the diversity of video-stream receivers. The system will have some basic characteristics of the next video coding standard, such as high compression efficiency, high scalability and high error resiliency. This project will provide a software prototype of wavelet video codec with full scalability, construct a verification platform for wavelet video on demand service, and furthermore, design some VLSI IP cores of the key module in the codec system

本项目研究的主要目的就是着眼于下一代视频编解码标准的基本特征（高效压缩，高可伸缩，高容错），以小波技术为核心构建新型高效的视频编解码系统；特别针对当前视频传输网络的异构性，网络带宽的波动性以及用户视频接收终端的多样性，实现一个码流高度可伸缩同时兼顾压缩效率的小波视频编解码软件原型，并且构建基于异构IP网络的小波视频服务的技术验证平台；进一步还将基于VLSI技术，对小波视频编解码系统的关键模块进行IP核设计

With the further development of computer network, communication network and the distributed system, communication protocols are more and more complicated, formal description technology plays the indispensable role in the network protocol design. LOTOS - as one of the ISO standards of FDT, is designed for distributed systems, especially for communication service and communication protocol.

随着计算机网络、通信网络以及分布式系统的不断发展，通信协议有日渐复杂化的趋势，形式描述技术在网络协议设计中占有举足轻重的作用，作为国际化标准之一的LOTOS技术是专为分布式系统设计的形式描述技术，特别是通信服务和协议。

The base of computer culture, c programmer, fundamentals of analog electronic circuits, fundamentals of digital electronic circuits, data structure, principles of computer composition, operating system, discrete mathematics, computer network, principles of microcomputer, 8086/8088 macro assembler language; multimedia technology; the principles of database; oopl( errorobject oriented programming language); fundamentals of compiling; software engineering; numerical computational method; mcs51/96 principle of single-chip computer; artificial intelligence; computer system organization; digital interface and digital circuits; java programming language; data structure; operating system; computer network; technology of electronics, etc.

计算机文化基础、c语言程序设计、模拟电路基础、数字逻辑电路基础、数据结构、计算机组成原理、操作系统、离散数学、计算机网络、微型计算机原理、8086/8088宏汇编语言程序设计、多媒体技术、数据库原理。面向对象语言程序设计，编译原理，软件工程基础，数值计算方法、mcs51/96系列单片机原理与应用、人工智能、计算机系统结构、数子接口技术与电路、数据库设计基础 java语言，数据结构，操作系统，计算机网络，电子技术等。还有一些选修的课比如：tcp/ip网络协议分析基础、oracl数据库原理，db2数据库原理等。

Combined chaos theory with Neural network, it presents predisposal technology in data-disposal of phase space, compares it with others, its convergent speed and forecasting precision have been improved greatly.

将混沌理论与神经元网络结合起来，首次提出了在相空间中进行数据预处理的神经网络训练样本预处理技术，该技术通过与其他预处理技术的比较，其网络收敛速度与预测精度有较大提高。

Along with vehement market competition, the technical request that relates to exploit banausic and advanced network resource management is put forward,How to increase the operational level of the telecommunication network everywhere, how to complete the communication guarantee responsibility given from the superior, how to keep the high level service quality, how to manage the equipments of the different manufactory in unification, moreover how to carry through the assistant decision-making that relates to feasibility and maneuverability of the preparative scheme of the emergency communication base on the network resource.

随着市场竞争的加剧，对开发实用、先进的网络资源管理技术提出了要求，如何提高各地电信网络的运营水平，完成上级赋予的通信保障职责，保持高水平的服务质量，统一管理不同制造商的设备，并在网络资源的基础上进行战备通信应急预案的可行性与可操作性的辅助决策；如何综合运用计算机科学、通信技术、地理信息系统的理论和方法对已投产运营的或将建设的网络相关信息进行有效管理，改善和提高调度、指挥效率，更加有效地管理和分配整个网络资源；如何使网络资源管理从单项的、人工的、独立的、局部的和数据的，走向综合的、智能的、统一的、整体的和可视化的，从而充分地发挥通信设备的作用，及时准确地为重要客户提供必要的通信保障；成为当前人们所关注并迫切希望得到解决的问题。

Our main contribution is in presenting;(1 )the definition of masqueraded degree for a computer in sometime by the number of masqueraded IP divide the number of the network session;(2) the algorithm for maintaining the queue of masqueraded IP, changing their states and competing the masqueraded IP by sending ARP messages; Using DivertSocket to monitor the packets, and basing Netfilter and IPTables, we design an experimental system IPDM based on this model, and satisfactory results are obtained.

改变其状态和竞争伪装IP；使用监测数据包的DiverSocket，Netfilter和IPTables，我们设计了一个基于此模型的实验IPDM，获得了满意结果。引言扩大了IP伪装的范围，从而增加了攻击者的攻击难度，起到了主动防御的作用。目前解决网络安全问题的主要技术手段有加密技术，基于网络、主机的各种防范措施，以及信息伪装技术等。这些技术在防御网络入侵、保护信息安全方面均有一定的作用。但不能很好

In the thesis, research on network vulnerability analysis and IP traceback is discussed.Under the background of "IP network topology and analysis of performance based on network detection" supported by NSFC, Distributed Network Measurement and Analysis Infrastructure, the cooperant result of our workgroup, is discussed, and also the significance of network vulnerability analysis and IP traceback research in DNMAI; Several existing advanced vulnerability analysis methods and models are compared and summarized. Advantages and disadvantages of each technique are discussed in detail.

论文以国家自然科学基金重点项目(基于网络探测的IP网络拓扑发现和性能分析)工作组提出的分布式网络测量和分析基础架构为背景，在网络脆弱性分析和反向追踪方面做了一些研究工作：说明了脆弱性分析和反向追踪研究在DNMAI架构中的意义和作用；对现有网络脆弱性分析领域的几种先进模型和技术进行分析、比较和综述，详细讨论了各种技术的优缺点。

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。