在算法上

In this paper, the author first introduces some basic conception of Cipher technology and Shannon model of secret communication, then the paper discusses and analyses the advantages and problems of symmetric algorithm and dissymmetrical encryption.

在介绍密码学基本概念以及Shannon保密通信模型的基础上，分析了对称密码算法和公钥密码算法的优点及其在应用中注意的问题，最后对密码算法的发展及其应用的未来做出展望。

Firstly, this thesis introduces background, concept and characteristics of MANET, and points out security issues and challenge through a security requirement analysis for MANET. Secondly introduces the basic concept, classified methods and the composing of the IDS.Basing on the research of the lineate networks, this thesis proposes a hiberarchy model based zone, and presents a new

在针对有线网络入侵检测技术研究基础上提出了适用于无线Ad Hoc网络的基于域多层入侵检测模型，并在该模型基础上实施一种新的混合入侵检测算法；通过NS-2网络模拟仿真器模拟测试了该算法的可行性与有效性，构建了移动Ad Hoc网络与有线网络的互连模型，并提出了适用于该互连模型中的入侵检测实施方案。

Organization: Manufacturing Engineering Institute, Chongqing UniversityAbstract: Based on the influences of opposite clearance on computer numerical control machining, the CNC code precompensation method of the CNC machining opposite clearance is introduced, and the precompensation process of opposite clearance is also introduced. The vector operation rules are used to research the algorithm of precompensation, and the proposed algorithm has been applied in a special numerical control equipment.

摘 要：在分析反向间隙对计算机数控（computer numerical control，CNC）加工影响的基础上，提出一种数控加工反向间隙的数控代码预补偿法，给出了反向间隙预补偿流程，并采用向量运算规则进行了预补偿实现算法研究，所提算法已在某专用数控设备上得到应用。

Nowadays the scholars of other countries have developed many algorithms,this dissertation sums up these classical traffic incidents detection algorithms and indicates that these algorithms are mostly based on other countries freeways' detection data and their main limitation is that the algorithms are lack of replantable and auto-adaptable, while our freeway has great differences with other countries in traffic flow, traffic makeup and road establishment and so on.

目前各国学者已开发出各种检测算法，本文在总结常用交通事件检测算法的基础上指出这些事件检测算法大都是基于国外道路的检测数据，且其主要缺陷表现为缺乏可移植性和自适应性，而我国道路在交通流量、道路交通组成以及道路设施等方面与国外有较大的差别，如果直接将这些方法应用于我国高速公路事件检测，检测效果不会很理想。

As one of contributions of this thesis, an improved decoding algorithm based on the WBF algorithm is proposed.

在WBF算法的基础上，论文提出了一种新的迭代译码算法，该算法在基本不增加译码复杂度的情况下，对译码性能有较大的提高。

this paper makes the gas remote monitor network as background to do some research on the qos guarantee of the network.qos is a synthesis guide line which can be used to estimate the degree to satisfy with some server,which is a technology to solve the problem of delay and congestion in network.it must integrate multi-qos mechanism to get good qos guarantee in the practical application.three qos models in the ip net application and homologized affective factors are demonstrated.meanwhile,the field of qos protection strategy arrangement in shaanxi coal mine gas network has been picked up as the example.for this situation,the comparison to the different qos models is doing strictly.by combining the tcp congestion control arithmetic with ip congestion control arithmetic,the paper also emphatically describes the corresponded arithmetic model for that.stimulatingly,it is promoted the qos characteristic over-area effectively,which it is based on the original single congestion control.

摘 要：以陕西煤矿瓦斯监测远程联网为背景，研究其联网网络的qos保障策略实现。由于现有的各种qos实现机制无法单独为陕西煤矿瓦斯监测联网网络的qos提供保障，因此在实际应用中必须结合多种机制才能得到较好的qos保障效果。比较了传统ip网络的qos结构体系，通过分析intserv和diffserv两种模型的基本原理、工作方式，并指出其各自的优缺点和网络应用环境，设计了将rsvp协议与diffserv模型相结合来满足瓦斯监测数据传输实时性的要求；针对陕西煤矿瓦斯联网的特性，提出了将tcp拥塞控制算法与ip层拥塞控制算法相结合的算法模型，并且该模型的应用可以在原有单一拥塞控制的基础上有效地提升跨地区网络的qos特性。

this paper makes the gas remote monitor network as background to do some research on the qos guarantee of the network.qos is a synthesis guide line which can be used to estimate the degree to satisfy with some server,which is a technology to solve the problem of delay and congestion in network.it must integrate multi-qos mechanism to get good qos guarantee in the practical application.three qos models in the ip net application and homologized affective factors are demonstrated.meanwhile,the field of qos protection strategy arrangement in shaanxi coal mine gas network has been picked up as the example.for this situation,the comparison to the different qos models is doing strictly.by combining the tcp congestion control arithmetic with ip congestion control arithmetic,the paper also emphatically describes the corresponded arithmetic model for that.stimulatingly,it is promoted the qos characteristic over-area effectively,which it is based on the original single congestion control.

摘 要：以陕西煤矿瓦斯监测远程联网为背景，研究其联网网络的qos保障策略实现。由于现有的各种qos实现机制无法单独为陕西煤矿瓦斯监测联网网络的qos提供保障，因此在实际应用中必须结合多种机制才能得到较好的qos保障效果。比较了传统ip网络的qos结构体系，通过分析intserv和diffserv两种模型的基本原理、工作方式，并指出其各自的优缺点和网络应用环境，设计了将rsvp协议与diffserv模型相结合来满足瓦斯监测数据传输实时性的要求；针对陕西煤矿瓦斯联网的特性，提出了将tcp拥塞控制算法与ip层拥塞控制算法相结合的算法模型，并且该模型的应用可以在原有单一拥塞控制的基础上有效地提升跨地区网络的qos特性。关键词：服务质量；综合服务模型；区分服务模型；拥塞控制

Then, the theme provided efficient layout solutions to those accessories of layout-storage with niched genetic algorithm as a tool: through establishing the mathematical model of layout-optimizing problem...

在此基础上，用基于小生境技术的遗传算法对排样库中的零件进行排样：先建立优化排样的数学模型，根据该数学模型将多边形在矩形板料上的排列方式转化为特定的编码，并建立编码和和排样方式的映射模型，然后采用基于小生境的遗传算法对排样过程进行优化。

Based on these, parallel computing problem of matrix tensor product is discussed, some parallel computing models are presented, the algorithm complexity is analyzed, and the thought and process are elaborated by an example. block matrix ; tensor product ; permuted similar ; parallel algorithms ; computational complexity

文献〔l论述了Cannon算法在工作站机群上的实现，文献[2]提出了一种基于对角划分的并行算法，文献〔3〕提出了在分布式环境下并行求解对称带状矩阵特征值问题的并行二分/多分法及其改进，文献41给出了稠密对称矩阵三对角化的MPI+OpenMP混合并行算法，还有著名的Cannon

In discussion of this problem,obstacles are supposed having known at numerous methods for predigesting problem.

在该问题的探讨过程中，人们尝试了各种方法，如实时性比较好的人工势场法、虚力场法和全局优化性能较强的遗传算法、神经网络、蚂蚁算法等[1-3]，但是这些方法基本上都是在假设障碍物已知的情形下进行的，即将研究的重点仅放在了算法对最优路径的搜索上。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。