基于模糊小波神经网络的交通标志识别方法研究

对交通标志进行实时、正确的识别,是车辆自动导航中一个重要方面.该文介绍了一种基于模糊小波神经网络的交通标志识别方法.该方法首先利用不变矩来提取图像特征,然后将特征向量输入模糊小波神经网络进行识别.该网络以小波函数作为模糊隶属函数,将模糊技术与神经网络相结合,利用神经网络实现模糊推理,并可对隶属函数的形状进行实时调整,从而使网络具有更强的学习和自适应能力.实验证明,该方法具有较高的识别精度和速度,在车辆自动导航中具有较高的应用价值.     

基于模糊对向传播网络的水中目标分类识别

把对向传播（CP）网络的竞争层神经元输出函数定义为模糊隶属度函数,将模糊C-均值（FCM）算法和对向传播网络相结合,提出了一种改进的模糊对向传播（MFCP）网络。在MFCP网络中解决了模糊隶属度函数的自动生成问题。对海上实录的三类水中目标辐射噪声进行了调制解调谱（DEMON谱）的线谱和连续谱分析,并进行了对应的特征提取和神经网络分类识别实验,结果证明：MFCP网络的分类能力及对未训练目标的适应性优于CP网络和误差反向传播（BP）网络。     

基于Chebyshev函数的T-S模糊神经网络及其快速算法

模糊神经网络有效的利用模糊技术和神经网络两者的优点,但是由于需要调整模糊隶属度函数,使得网络计算量很大,收敛速度变慢。本文利用T-S模糊模型,以Chehyshev函数作为隶属度函数,无需调整其参数,大大减少了计算量,提高了运算速度,仿真结果表明了该模型和算法的有效性和快速性。     

实时射线检测焊缝缺陷的模糊神经网络识别方法

通过对射线检测焊缝缺陷特征的分析，提出了用于焊缝缺陷识别的模糊神经网络模型，介绍了隶属度的构造和BP网络学习算法。实验表明，该方法对于焊缝缺陷的识别是有效的。     

一种用模糊－神经技术建造专家系统的方法

本文提出了一种用模糊－神经技术建造专家系统的方法（ＦＮＴ方法）。从领域专家处获取的知识是以模糊规则和隶属函数的形式表示的。根据本文提出的方法，首先将模糊规则和隶属函数用神经网络表示出来（导入）；生成的神经网络用于实现模糊推理，然后利用修改的反传算法训练神经网络，从而提高系统的精度，修改隶属函数，求精模糊规则；最后从神经网络中提取隶属函数和模糊规则（导出），帮助解释神经网络的内部表示和操作。利用本文所提出的方法建造的系统可实现快速的无匹配模糊推理，并具有较强的学习能力。     

基于模糊隶属度函数的ICA特征提取和识别

提出了一种基于模糊隶属度函数的独立成分分析图像特征提取和识别方法.该方法首先通过主成分分析等对图像进行预处理,然后通过FastICA算法对图像进行处理,构造特征脸子空间,计算训练样本和待测样本在特征脸子空间中的投影,引入模糊隶属度函数,建立矢量隶属度函数,作为识别分类器进行人脸识别.针对ORL标准人脸数据库上的实验结果表明,该方法具有良好的识别分类能力.     

一种用模糊—神经技术建造专家系统的方法

本文提出了一种用模糊－神经技术建造专家系统的方法。从领域专家处获取的知识是以模糊规则和隶属函数的形式表示的。根据本文提出的方法，首先将模糊规则和隶属函数用神经网络表示出来（导入）；生成的神经网络用于实现模糊推理，然后利用修改的反传算法训练神经网络，从而提高系统的精度，修改隶属函数，求精模糊规则；最后从神经网络中提取隶属函数和模糊规则（导入），帮助解释神经网络的内部表示和操作，利用本文所提出的方法建     

一种基于模糊规则的神经网络结构及其学习算法研究

文章提出了一种基于模糊规则的神经网络结构,并用形式化语言进行描述。基于模糊规则的神经网络由输入层、规则层和输出层三层网络结构组成,以隶属度函数（语义值）作为网络权值,输入值沿权值的传播即进行隶属度计算。在充分分析三角形函数特征的基础上,应用启发式方法,导出了FRBNN网络的学习算法。最后应用FRBNN评价船舶碰撞危险度,表明FRBNN兼备神经网络和模糊推理系统的优点。     

基于模糊神经网络的汽车类型自动识别分类系统

该文提出了一个基于模糊神经网络的汽车类型自动识别分类系统。在研制该系统的过程中，将模糊数学理论和神经网络相结合，建立了一个自适应的模糊逻辑与神经网络协作系统，成功地解决了在无专家经验的情况下，自动建立模糊隶属度函数和模糊识别规则的问题，具有较强的实用价值。     

基于改进模糊神经网络的软测量建模方法

提出了一种改进的模糊神经网络软测量建模方法，采用规则化的平均输出隶属度函数作为模糊基函数进行反模糊化运算；在训练网络时,部分参数采用Levenberg-Marquardt算法来训练，另一部分采用一阶梯度下降法．最后用该建模方法建立了聚合反应中熔融指数的软测量模型，并与一般的模糊神经网络软测量模型进行比较．结果表明改进的模糊神经网络对初始值的选择不敏感,具有很好的收敛性，同时还能达到指定的预测精度，很适合工程应用．     

凹凸科技进军网络安全领域

2006年2月28日,网络安全及电源管理芯片供应商凹凸科技(O2Micro)向中国用户隆重推介凹凸科技在网络安全领域的独特理念和全新方案.此举标志着凹凸科技已正式进军网络安全领域.特别在ASIC防火墙和SSL VPN技术和产品的竞争中,凹凸科技已经担负了不可或缺的重要角色.而其在模拟与数字集成电路方面拥有的强大设计和制造能力,无疑将为其最终成为全球网络安全领域的主要供应商增加关键筹码.凹凸科技在评述中国安全市场发展趋势的同时,还将携两款最具代表性的成熟产品--ASIC防火墙SifoWorks和SSL VPN产品Succendo一起亮相.     

2006 Sun科技日在中国举行——"Java之父"James Gosling再来中国

继成功举办2005年Sun JAVA中国开发者大会之后,Sun一年一度全球规模的开发者大会——2006Sun科技日又分别于今年9月23～24日和27～28日相继在中国上海和北京两大都市举行“。Java之父”James Gosling再次来到中国,与中国的开发者讨论软件开发者所关心的问题,讲述Sun的软件发展策略、介绍Solaris10操作系统的独特的特性和新的Java开发工具、展望Java技术发展前景,特别是阐明Sun实施Java技术开源的策略。Sun科技日是Sun公司最重要的全球开发者的大会,它针对Java技术、Solaris10OS、NetBeans、OpenSolaris、开源技术、开发工具和Web…     

陕西省第一届国防科工系统内网安全研讨会召开

2006年3月15日,“陕西省第一届国防科工系统内网信息安全建设专题研讨会”在西安市隆重召开。此次会议的议题是,在当前的信息安全形势下,陕西省国防科工系统内网面临的信息安全问题,以及如何采取有效的解决方案进一步提高国家机要部门内部网络的安全保护等级,以适应形势发展的需要。此次会议由陕西省国防科工委主办,陕西省国防科工委信息中心和北京榕基网安科技有限公司、北京理工先河科技发展有限公司、陕西金叶西工大共同承办,国家保密局和陕西省国防科工委的有关领导出席会议并发表了重要讲话。在为期两天的会议中,共有100多名国防科工系…     

IT in teacher training in France

Abstract To understand what is going on in France at the moment in the domain of computers and related communication technologies in teacher training, there are two major developments that have to be kept in mind. Firstly, the ways of becoming a teacher in France underwent major changes in 1991. It is therefore too early to come to general conclusions about the effects of this reform in the field of new information technologies. Secondly, French IT in schools policy has shifted from a large-scale centralized equipment operation, which provided microcomputers in each school from 1985 to 1987, to a more regional management of equipment funding, with less national piloting in the field. This paper describes what happened during the previous period and what is taking place now. With matters still evolving the paper represents a snapshot rather than an exhaustive survey; such a survey remains to be done.     

Informatics in teacher education in Japan

Abstract This paper charts the developments in information technology (IT) policies in education in Japan over the past decade with particular emphasis on the impacts on teacher education. Beginning with the work of the National Council on Educational Reform in 1985, the Japanese education system initiated a thorough analysis of the role of information technology in all aspects of education from kindergarten through to high school, vocational education and pre- and in-service teacher education. The various approaches culminated in guidelines and statutory requirements relating to both schools' curricula and teacher training, published in the period 1990–1992. More recently other ministries have contributed to developments including the Ministry for International Trade and Industry which has categorized the different types of information engineers and among these is the new Educational Engineer. The paper reports the processes leading to these developments.     

IT in teacher education in Denmark

Abstract As with many European countries Denmark is experiencing change in teacher education and most notably in the wake of an act of government in 1992 which was designed to set out common aims for teacher education. Prior to that the content and structure of teacher education had been highly specified including, for example, the requirement that student teachers should take a course of 42 hours IT-related lessons. This paper provides a brief history of the background to the changes in teacher education and focuses on the implications that the more flexible aims for teacher education have for the future integration of IT in teacher education.     

在网络层实现安全传输通道技术的研究

安全传输通道是对传输的原始信息进行加密和协议封装处理,从而实现安全传输的技术,本文在TCP/IP的网络层上提出了实现安全传输通道的技术和解决方案。并对网络层的安全传输通道技术提出了实现机制。     

Teacher education in IT in Germany

Abstract In 1988 the eleven West-German Kultusminister , with responsibility for the school systems in their respective Bundeslaender , reached agreement with the Federal Ministry of Education and Science on the broad concept of 'Information and Communications Technology', ITG. After four years of discussion it was agreed that ITG should be introduced into the secondary level of the general schools. In spite of strong disagreements about the ways and speed of implementation, and after several years of experiments, important parts of the concept have become a reality in practically all of the old Bundeslaender. While acknowledging the complexity of the German educational system the paper attempts to outline the development of the concept of Information and Communications Technology and its consequences in teacher education. The development in the eastern part of Germany, the former GDR, has been completely different to that in the western part and this is also commented upon in the paper.     

IT in teacher education in Scotland

Abstract This paper outlines the consensual approach to the formulation of curriculum policy in general, and in relation to information technology (IT) in particular, in Scotland. It outlines the approaches to IT that have emerged as a result. These are founded on the premises that all children should develop knowledge and understanding about IT and skills in using IT; that IT should influence both content and delivery of the curriculum; and that IT (computing studies in Scotland) should be an elective for secondary school pupils. Against this background, the paper describes the evolution of policy and practice relating to IT in teacher education. It appraises the strategies which institutes are using for developing the professional skills necessary to deliver IT in the Scottish curriculum. It notes significant progress but highlights the need to develop strategies which integrate IT more deeply with other professional studies so that student teachers develop deeper, more reflective approaches to IT.     

Recent developments in ergonomics in China

Ergonomic thought and practice were introduced in ancient China in relation to modern developments in Chinese ergonomics. Despite the ten-year interruption of the 'cultural revolution’ in the late 1960s and 1970s, ergonomics has made great progress in China in the last decade. In this paper some general developments in recent ergonomics’ teaching and in professional organizations are described. Four major areas of ergonomics research are illustrated: (1) Visual displays and signal design; (2) Human-computer interface with Chinese computers; (3) Cognitive strategies and decision support; (4) Mental workload and occupational stress. The main characteristics of Chinese ergonomics are discussed and new directions are highlighted, based on recent developments and progress.