Optimization in the Migration Problem of Mobile Agents in Distributed Information Retrieval Systems

In this paper,we employ genetic algorithms to solve the migration problem (MP).We propose a new encoding scheme to represent trees,which is composed of two parts;the pre-ordered traversal sequence of tree vertices and the children number sequence of corresponding tree vertices.The proposed encoding scheme has the advantages of simplicity for encoding and decoding,ease for GA operations,and better equilibrium between exploration and exploitation.It is also adaptive in that,with few restrictions on the length of code,it can be freely lengthened or shortened according to the characteristics of the problem space.Furthermore,the encoding scheme is highly applicable to the degreeconstrained minimum spanning tree problem because it also contains the degree information of each node.The simulation results demonstrate the higher performance of our algorithm,with fast convergence to the optima or sub-optima on various problem sizes.Comparing with the binary string encoding of vertices,when the problem size is large,our algorithm runs remarkably faster with comparable search capability.     

非汉字符号"混合序列的强大数律

讨论了一类较广泛的~混合序列的收敛性质,获得了与独立情形一样的三级数定理等收敛性质,并由此得到与独立情形一样的Kolmogov强大数律的充分条件.     

浅析英语新闻报刊文体的翻译

本文简要分析了英语新闻报刊文体的范畴，新闻报刊文体的特点，它的句法特点涉及到翻译成中文时翻译方法既要忠实原文，以求达到最佳可读性，同时也要注意文章中不同文体直译与意译的结合，还要注意翻译中的文化因素，以求达到最佳效果。     

汉语中委婉语言的表达

汉语委婉语言的形成，有其历史根源和社会根源。委婉语言不仅包括委婉词，还包括委婉语气。在现实生活的交际中，委婉语言的运用尤其显得重要。     

龙岩市非公经济发展存在的问题及对策

近几年来．龙岩市非公经济异军突起，发展迅速，已占阂西经济的“半壁江山”，成为促进闽西社会生产力发展的重要力量。但是。龙岩市非公经济与沿海发达地区相比还差距较大，在发展过程中还存在许多问题，主要表现为规模较小，科技含量偏低，发展环境不够宽松等等，解决这些问题已成为当务之急。为了进一步促进我市非公经济的健康发展．必须营造宽松的外部环境，消除体制性障碍；放宽市场准入，予以非公经济国民待遇；提供优质高效的社会服务．改进服务和监督方式，引导非公经济依法经营，健康发展。     

基于径向基函数神经网络的滚动轴承故障模式的识别

The impacts of different groove shapes, numbers, and angle of friction dish on transmitting torque, speed, push pressure in wet speeding clutch are discussed in this paper. Since the wet speeed governing clutch works within hydrodynamic lubrication mixture lubrication. boundary, lubrication and contact situation, the oils combining with a-hydrocarbon or polyester are getting widely used as lubricant.The power-law fluid model with Patir-Cheng average flow model, GT asperity contact model and oil film inertia are applied for average Reynolds equation setting, In order to investigate the relationship between average push pressure within hydrodynamic lubrication and mixture lubrication, average transmitting torque and output speed, the numeral calculation and analysis are presented. According to calculation, it is found that the groove shape, groove angle and groove numbers affect the average transfer torque and push pressure with the speed rate.     

课程整合到问题整合——兼谈学分制下高师化学实验课教学与管理

文章结合学分制的特点与要求,针对现行普通高师化学实验教学课程体系及实验室管理体制中存在 的不协调因素,提出了将课程整合转化为问题整合和将实验室封闭管理改为开放管理的实验教学改革建议.     

298K时DyCl_3在DMF和水混合溶剂中无限稀释摩尔电导率的测定

在298K时测定了DyCl3在DMF和水混合溶剂中的电导率,根据λ=(k液-k剂)×10-3/c公式求得DyCl3的摩尔电导率λ值,按公式λ=λ0(1-βc(1/2))作图外推求得DyCl3在DMF和水混合溶剂中的无限稀释摩尔电导率λ0值。     

基于集对分析的模糊逻辑研究

介绍了一种新的解决模糊问题的途径 ,提出了一种模糊逻辑表示新形式 ,论证了其较之于传统模糊逻辑表示法的优点 .     

基于GPS/GIS/GSM车辆动态定位导航系统

简要介绍了全球卫星定位系统(GPS)、地理信息系统(GIS)、移动通信系统(GSM)及其它们在车辆定位与导航系统(VLNS)中的主要作用;研究该系统的组成以及所能实现的功能;分析GPS辅助定位的技术方法和地理信息系统的数据更新.