公交系统青年文明号创建模式初探

在公交系统开展创建"青年文明号"活动,一方面增强了公交青工的敬业爱岗意识和文明服务意识,展示了当代公交青工的精神风貌,另一方面倡导了职业道德和职业文明,塑造了公交行业的良好形象,推动了公交两个文明建设.     

监理在农村公路建设中的作用

沥青路面平整度受底基层、基层表面施工的直接影响，严格控制基层、底基层平整度，严格控制面层施工，消除各种因素（如设备匹配、摊铺、碾压及施工温度等）对面层平整度的影响，来确保沥青路面平整度。     

Delay Restoration of Single-Track Railway Rescheduling

On the basis of analysis of the principle of delay restoration in a disturbed schedule, a heuristic algorithm for rescheduling trains is developed by restoring the total delay of the disturbed schedule. A discrete event topologic model is derived from the original undisturbed train diagram and a back propagation analysis method is used to label the maximum buffer time of each point in the model. In order to analyze the principle of delay restoration, the concept of critical delay is developed from the labeled maximum buffer time. The critical delay is the critical point of successful delay restoration. All the disturbed trains are classified into the strong-delayed trains and the weak-delayed trains by the criterion of the critical delay. Only the latter, in which actual delay is less than its critical delay, can be adjusted to a normal running state during time horizon considered. The heuristic algorithm is used to restore all the disturbed trains according to their critical details. The cores of the algorithm are the iterative repair technique and two repair methods for the two kinds of trains. The algorithm searches iteratively the space of possible conflicts caused by disturbed trains using an earfiest-delay-first heuristics and always attempts to repair the earliest constraint violation. The algorithm adjusts the weak-delayed trains directly back to the normal running state using the buffer time of the original train diagram. For the strong-delayed trains,the algorithm uses an utility function with some weighted attributes to determine the dynamic priority of the trains, and resolves the conflict according to the calculated dynamic priority. In the end, the experimental results show that the algorithm produces ＂good enough＂ schedules effectively and efficiently in disturbed situations.     

KHB型高压油脂润滑泵在汽车底盘集中润滑系统中的应用

主要介绍集中润滑在汽车底盘的重要性,重点分析中高压集中润滑系统在实际使用过程中更加节省油脂,为客户创造更多价值,阐述集中润滑系统的发展趋势,为汽车整车和零部件的研发工作提供参考。     

滚筒式沥青混合料搅拌设备现场监测方法

本文根据滚筒式沥青搅拌设备的工作特点,提出了对其生产过程及生产质量的监控要求,叙述了生产现场对该设备的监控方法,特别介绍并分析了利用沥青混合料最大密度快速测定沥青含量(或油石比)方法的必要条件及可行性.     

车用柴油机涡轮增压技术的新发展

主要阐述了为解决车用发动机低速工况问题而采用的涡轮增压系统方案及在涡轮增压器上新技术、新材料的应用情况。     

RBF神经网络理论在发动机特性计算中的应用

运用径向基函数 (RBF)神经网络理论 ,建立发动机万有特性和外特性模型 ,并与常用的一些建模方法所建模型进行了比较。结果表明 ,应用RBF神经网络建模方法简单可靠 ,精度较高。     

汽车转向拉杆及球头销寿命试验台的开发

汽车转向拉杆及球头销是汽车上的重要部件，其强度和可靠性直接关系到汽车行驶安全，为满足该部件的产品要求，设计了一种转向拉杆及头销寿命试验台，介绍了试验台的试验技术参数，试验台的组成及原理，该试验台经工厂使用，效果良好。     

浙江省航道地理信息系统概述

结合浙江省航道管理计算机应用软件开发工作，介绍浙江省航道图文信息管理系统（ＣＧＷ９７）的功能、特点、运行环境，并就ＣＧＷ９７的菜分层技术、跨平台数据共享等系统的关键技术进行叙述。     

预应力钢-混凝土组合梁有限元非线性分析

给出了预应力钢－混凝组合梁有凶非线性分析中的钢与混凝土分层板壳单元，栓钉剪力连接件和预应力钢索的线性单元模型，以有限变形理论为基础，同时了材料非线性和几何非线笥，数据模拟结果与试验结果吻合较好。