可靠性技术在电力机车电系统设计中的运用

介绍了在电力机车电系统设计中常用的几种可靠性设计技术:降额设计、冗余设计、电磁兼容设计和热设计,提出在电力机车电系统设计中合理运用常用可靠性设计技术的建议。     

对完善抗滑桩预算定额的探讨

根据内昆铁路和四川金筠地方铁路山区抗滑桩施工情况,结合施工现场所收集的第一手资料,对抗滑桩预算定额在使用过程中出现的问题和争议较多的地方提出了建议,为进一步完善抗滑桩预算定额提供了可供参考的资料.     

浅析水利工程建设中的质量责任和义务

水利工程建设过程中,建设单位、设计单位、施工单位在工程质量管理体制下,应承担的质量管理职责和应履行的各项义务;实行各负其责制,尽早控制和防范工程质量事故的发生。     

光纤式转速测量系统的研究

介绍了用光纤作为转速传感探头的转速测量原理，分析了探头作用距离与探头参数之间的关系，给出了一些解决干扰问题的方法，对电路部分作了必要的说明，本系统探头体积小，易于安装，无电火花，抗电磁辐射，具有传统测量方法所不具备的优点。     

CATV系统中交扰调制的特性分析

论述了电缆电视系统中交扰调制干扰的严重程度与干扰频道最高输出电平、传送频道数目及级联放大器数量的关系，指出采用混联的方法可适当知道成调制干扰。     

模糊状态下装卸机械系统的可靠性分析

本文分析了装卸机械系统状态的模糊性，定义了系统的模糊状态，导出了系统模糊状态的转移公式，建立了模糊状态下系统可靠度的计算理论，并以集装箱吊运机为例，计算其在模糊状态下的可靠度。     

基于对象模型的气垫船航行控制专家系统

本文介绍了一个基于对象模型的气垫船航行控制专家系统，系统先建立气垫压力分布控制的数学模型，然后按照气垫压力分布均匀的控制要求设计推理系统，系统在执行推理的过程中，实现气垫船升沉自动控制的目的。     

The acquisition of pre-trip information: A stated preference approach

This paper describes a study into the effects of pre-trip information on travel behaviour, carried out as part of the DRIVE project EURONETT. The aim of the study was to investigate travellers' requirements for different types of travel information and methods of enquiry and to relate the process of information acquisition to changes in travel behaviour. The study was carried out using a stated preference approach, built on the use of a microcomputer based simulation of an in-home pre-trip information system offering information on travel times from home to City Centre, by bus and car, at different times of the day. A novel feature of the stated preference exercise was that respondents effectively generated their own choice set of alternatives through the process of information acquisition. Surveys were undertaken in parallel in Birmingham and Athens, thus allowing a comparison to be made between behaviour in typical Southern and Northern European settings.The first part of the paper discusses some of the fundamental behavioural and modelling issues raised by the introduction of advanced traveller information systems. It then describes the study methodology and the stated preference experiment. Results are presented from an analysis of the information acquisition process itself and from choice models relating the acquired information to effects on different dimensions of travel behaviour.     

运输需求与运输系统服务水平的平衡趋势分析

本文分析了运输需求与运输供给，构造了运输需求与运输系统服务水平的平衡模型，通过分析平衡条件以及平衡趋势的实现、不平衡状态的干预等，获得了平衡条件的实际意义、不平衡状态干预的手段，据此针对现行运输系统规划及运输组织提出了两点看法：一是认清未来运输量的构成，二是采取可行措施保持运输系统的正常运转。