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结合张家口市崇礼区城市道路提升改造项目的工程实例,详细介绍了城市道路提升改造的原则、实施细节、改造方案等,为类似改造工程提供了参考实例. 相似文献
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伴随着现代化技术的不断发展和成熟,计算机技术也得到了空前的应用,各行各业中都可以积极地引入计算机系统体系,将一些固定的常态化信息进行程序化改善,进而达到提升效率,改善效果的目的,在汽车检测行业同样存在这样的应用。近年来,伴随着车检体系的日益完善,以信息化的方式进行车辆的检测,保养已经变得越来越普遍,计算机系统的应用在很大程度上提升了车辆检测的效率和信度,但是不得不承认,计算机系统的应用还存在一些不足,无论是硬件设备还是相关软件信息支持都仍有可完善之处。本文将对汽车检测过程中计算机系统的使用情况加以分析,探析目前状态下的优势所在,并分析当下存在的一些小的不足,旨在能够促使汽车检测工作更快更好地开展。 相似文献
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简要介绍利用现代交流传动技术和网络控制技术对直流传动地铁车辆进行升级改造的技术方案,并通过改造上海地铁1号线102#列车的实例对存在的技术难点进行探讨。 相似文献
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加快推进陇海线西宝段提速改造工程全力打造西部铁路"第一速" 总被引:1,自引:0,他引:1
陇海线西宝段作为西部路网惟一的200km/h提速改造工程,使西安铁路局站到了既有线提速改造的先进技术最前沿。西宝段在线路基础、电务设备、牵引供电设备、车辆等方面还不能适应开行200km/h动车组的需要。在提速改造工程中,西安铁路局注重引进消化吸收,从线路基础、电务系统、牵引供电系统以及动车组检测设备等方面采用了大量的先进技术,为解决开行200km/h动车组条件下的运输组织、调度指挥、车流调整、接发列车、旅客乘降组织,制定了陇海线西宝段提速改造工程的重点推进计划,确保提速改造工程的顺利实施。 相似文献
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针对上海轨道交通运营线路高峰小时特别是极端高峰(15 min)时运力紧张的局面,从技术角度对运力提升措施进行分析,梳理分别适用于高峰小时和极端高峰的运力提升方案,包括加开备车、调整列车开行比例和运行交路、上下行不均衡开行、采用跳站方式、增购车辆等,并对各方案的适用性和优缺点进行阐述,为运营提供参考。 相似文献
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P.N. Smith 《运输规划与技术》2013,36(4):427-447
Abstract An intuitionistic fuzzy set (IFS) is a generalisation of a fuzzy set characterised by a truth membership function and a false membership function. The former is a lower bound on the grade of membership of the evidence in favour of a particular element belonging to the set and the latter is a lower bound on the negation of that element belonging to the set derived from evidence against that element belonging to the set. A similar concept is a vague set, though vague sets have been shown to be identical to IFSs. In the context of project evaluation, an IFS may be used to represent the degree to which a project satisfies a criterion and the degree to which it does not. Aggregation of such IFSs has been considered in recent years to identify a best project in terms of several criteria or factors. A particular desirable way to aggregate IFS is in terms of an ordered weighted average (OWA) which can be expressed in different forms such as arithmetic and geometric. In an OWA operator, weights are applied to the position of an element in the aggregation. In addition, hybrid OWA operators may be developed to not only weight the position of elements in the aggregation but the element itself. An example is given relating to the Kuranda Range Road upgrade (Queensland, Australia) which is limited by grade, poor overtaking opportunities, poor horizontal alignment and other constraints and the road is expected to become increasingly congested over the next few years. A more flexible multi-factor decision method is used to identify a ‘best’ project from a set of four alternative projects. 相似文献