Development of a knowledge-based hybrid failure diagnosis system for urban transit

Urban transit is a complex system that contains both electrical and mechanical entities; therefore, it is necessary to construct a maintenance system for ensuring safety during high-speed driving. Expert systems are computer programs that use numerical or non-numerical domain-specific knowledge to solve problems. This research aims to develop an expert system that diagnoses the causes of failures quickly and displays measures to correct them. For the development of this expert system, the standardization of a failure code classification and the creation of a Bill of Materials (BOM) were first performed. Through the analysis of both failure history and maintenance manuals, a knowledge base has been constructed. Also, for retrieving the procedure of failure diagnosis and repair linking with the knowledge base, we have built a Rule-Based Reasoning (RRB) engine with a pattern matching technique and a Case-Based Reasoning (CBR) engine with a similar search method. Finally, this system has been developed as web based in order to maximize accessibility.     

基于自适应模糊系统的船舶碰撞危险评判

本文应用模糊系统方法建立船舶碰撞危险的专家评判系统。该系统用数值化的模糊联想记忆（ＦＡＭ）规则表示专家的领域知识并进行模糊推理,同时采用神经网络的微分竞争学习算法（ＤＣＬ）实现规则的自适应生成,该系统能模仿人类专家迅速作出危险评判,并具有学习,更新和完善的能力。     

Qualitative evaluation study of urban shared spaces in New Zealand

This paper presents the findings of a qualitative analysis using on-street perception and expert interview surveys of city centre streets that have been transformed into shared spaces in Auckland, New Zealand. The principal purpose was to investigate how well the shared streets performed, especially in relation to movement, access and place functions. The shared space sites at the Elliott, Lorne and Fort Street areas were measured against the performance criteria of Placemaking, Pedestrian Focus, Vehicle Behaviour Change, Economic Impetus and Safety for all users. On-street perception surveys totalling 360 responses (120 per site) were used in this study, together with an additional set of 40 responses from a survey of a control site in O’Connell Street that remained as a traditional street. Fifteen professionals with background in transportation and urban planning participated in semi-structured expert interviews. The main results of the Median Perception Ratings from the on-street surveys confirmed that the shared spaces generally performed positively. The statistical analysis revealed that the performance criteria of ‘Pedestrian’ and ‘Safety’ had a commanding influence over the other performance measures, and with the interconnectivity of the five objectives the perceived success of the urban shared spaces.     

城市物流服务体系评价指标及方法

城市物流服务水平评价指标体系的构建，对合理评价城市物流发展起着重要作用。在城市物流研究的基础上，构建城市物流服务水平评价指标体系，运用专家评分法确定权重系数，建立模糊评价模型，以确定城市物流的服务水平，并进行算倒应用。     

Knowledge-based System Prototype in Structural Component Design Based on FM

A knowledge-based system in structural component design based on fracture mechanics is developed in this paper. The system consists of several functional parts; a general inference engine, a set of knowledge bases and data-bases, an interpretation engine, a bases administration system and the interface. It can simulate a human expert to make analysis and design scheme mainly for four kinds of typical structural components widely used in shipbuilding industry: pressure vessels, huge rotation constructions , pump-rod and welded structures. It is an open system which may be broadened and perfected to cover a wider range of engineering application through the modification and enlargement of knowledge bases and data-bases. It has a natural and friendly interface that may be easily operated. An on-line help service is also provided.     

船舶设备故障智能诊断通用平台的研究

针对目前的诊断系统大多是面向单一的诊断对象和诊断方式，此文提出故障智能诊断通用平台的概念，建议采用Matlab和VC混合编程、BP神经网络同专家系统相结合构造知识库，以通过此平台实现全船设备的故障诊断。     

智能自适应控制及其在船舶操纵系统中的应用

主要分析了基于模糊控制，专家系统与神经网络的几种智能自适应控制系统的结构，原理，并与传统控制作了比较，介绍了智能自适应控制在船舶操纵系统中的应用情况，最后提出了智能自适应控制理论及应用面临的主要困难与亟需解决的问题。     

发动机5气门缸盖CAPP专家系统

介绍了CAPP在工艺过程设计中起的作用和它的发展，进而对发动机缸盖产品的结构特点和它的工艺设计进行了仔细研究，并针对此提出了一种发动机5气门缸盖CAPP专家系统的解决方案，并详细分析了发动机缸盖的CAPP专家系统的构成、工作原理和它的特点，该软件已经成功应用于某大型轿车发动机生产制造公司。     

基于模糊推理的高速公路软基处理技术决策专家系统研究

针对高速公路软基处理技术的方案决策问题,结合人工智能原理和软基处理的知识特点,建立了基于模糊推理的高速公路软基处理技术决策专家系统推理模型,重点阐述了系统参数的确定方法,并运用实例进行了推理验证。     

铁路自动售票系统故障诊断与维修专家系统方案的研究

针对铁路自动售票系统故障特点与故障分析,提出铁路自动售票系统的故障诊断与维修专家系统的方案,并对系统的知识表示和推理进行深入研究.该系统为铁路自动售票系统的故障诊断与维修提供一种科学途径,有助实现铁路自动售票系统技术支持及维护工作的智能化和自动化.