汽车维修中常见问题分析及处理方法

如今,汽车已经成为家家户户必不可少的用品,伴随着汽车数量的增多,汽车维修也成为困扰车主的一大问题。本文从现代汽车维修的基本内涵出发,首先分析了汽车维修中的常见问题,其次,本文针对如上分析分析了汽车维修时的注意事项,最后,本文探讨了如上问题的处理和解决方法。希望能给相关工作者以一定的启发。     

一般周期事件排序的网络模型及算法

在交通系统中，有许多事件是周期性发生的，按时钟模式对满足一定条件约束的周期事件进行合理的安排，这一问题被称为一般周期事件排序问题，本文将首先建立求解这一问题的网络模型。然后给出相应的算法，最后，对算法的复杂性给予简单的分析。     

关于连续正整数Diophantine方程的正整数解

连续正整数Diophantine方程xn+(x+1)n+…+(x+h)n=(x+h+1)n的正整数解问题,是一个迄今为止尚未彻底解决的数论难题。目前已知的结果是:①当6≤n≤33时;②当n>3且为奇数时;③当34≤n≤200且为偶数时,该方程均无正整数解。采用多种素数模筛法证明了:当200相似文献   

含有Hardy-Sobolev临界指标的拟线性方程组多解的证明

研究了一类含有Hardy-Sobolev临界指标权函数的拟线性方程组,运用最佳Sobolev常数和Nehari流形等变分方法证明在一定条件下椭圆方程组正解的存在性以及多重性.     

Periodic preventive maintenance policy with infinite time and limit of reliability based on health index

The aging of machine can be slowed and the life of machine can be increased by implementing periodic predictive maintenance. In this article,an improvement factor considering maintenance cost,age of machine and learning effect in the process of maintaining is constructed to describe the effect of periodic preventive maintenance. The model of improvement factor can be fitted through health index. Based on improvement factor with infinite time,cost function including preventive maintenance cost,minimal repair...     

大型动车运用所接触网设计关键技术浅析

以曹庄动车运用所为例,分析了大型动车运用所的供电方案;从景观设计、道岔布置、悬挂安装3个方面论述了接触网平面布置需要注意的事项;同时叙述了接触网与检查库、洗涮库、临修库及镟轮库、踏面诊断棚、站场排水沟、综合管沟接口的重要性。     

Suburban congestion: Recommendations for transportation and land use responses

Transportation congestion is reaching intolerable levels in many urban and suburban areas in the US. Reliance upon traditional responses, such as transit and new highway capacity, is not working — especially in suburban areas. Although methods for dealing with suburban congestion are often different, there are a number of common features that must be considered in developing short term as well as more permanent and long lasting solutions. In proposing short term solutions, a Menu of Actions is described. It includes transportation actions (the traditional transit and transportation management options) where there are opportunities for getting more out of the existing systems; land use/growth management actions which will result in more rational land use-transportation interactions; financial incentives, to encourage or discourage appropriate actions; more comprehensive and systematic land use and transportation planning; and the organizational and institutional actions required to implement rational solutions.While the Manu of Actions provides a broad array of possible actions to provide relief in the short run, over time the growth in traffic is likely to outpace their effectiveness. Consequently, longer term and often more difficult solutions must be considered and implemented as appropriate. They could include changes in land use development and land use management policies; changes in lifestyle and business practices; improvements through technological innovation; changes in the traditional ways of providing transportation services; and greatly expanded research and development.     

接触轨系统在道岔区可能存在列车失电问题的原因分析及解决方案

根据广州地铁6号线道岔区接触轨布置方案,结合车辆编组方式、限界、线路、信号等专业的要求,分析了接触轨系统在道岔区存在的列车失电问题的原因,提出了解决列车失电问题的两个方案:一是调整列车集电靴布置方案,二是在列车上部增加架空接触网.     

跨越俄罗斯等级道路的高铁桥式解决方案研究

根据俄罗斯首都莫斯科及周边的地形、地物、地质特点,研究适用于跨越各等级道路的高铁结构物解决方案,包括常用跨度简支梁和变高连续梁、等高连续梁、连续刚构、刚架桥、(异型)框架桥、下承式拱桥等高铁桥跨结构物.针对不同规模的道路障碍物,提出可供选择的常用跨越结构物适用原则,为其他类似铁路工程的涉路跨越结构的方案选择提供借鉴.     

广东省农村客运存在问题与解决思路

文中从基础设施、运营机制、管理力度以及补助政策等方面，论述了广东省农村客运中存在的问题，并提出了解决问题的思路。