3BA—9型单级单吸悬臂式离心清水泵联轴器的改造

本文通过对3BA－9型单级吸悬臂式离心清水泵振动及联轴器弹性圈磨 过快的分析，找出原因所在。通过对联轴器的改造，提高了清水泵运行平稳性，延长了水泵运行周期和维修周期。     

单射线折射波能分布计算(水波线性理论)

通过对水波折射线性理论的述评，提出折射现象的若干基本事实 ，对于（相对）缓坡，利用底侧壁面对入射波的全反射作用和近似的波幅矢平衡原理，求得缓坡上单射线折射波能分布算式，结果与传统的波向线法接近，对于（相对）陡坡和大控制行进角，根据相应的基本事实 ，引入马赫反射特征，改造缓坡单射线公式，得到陡坡上单射线折射波能分布的计算公式（群）。     

新加坡平车用P4a型阶段缓解自动空气制动机

介绍了新加坡平车用P4a型阶段缓解自动空气制动机的主要结构、作用原理、技术参数及性能试验等情况。     

敞篷版跑车的新演绎——2004款梅甘娜Ⅱ敞篷跑车

作为第一款以玻璃折叠顶篷为标准配置的轿车．梅甘Ⅱ娜敞篷版跑车同时以敞篷跑车和轿跑车作为目标市场。而较高水平的隔噪声水平、温度调节设施和舒适的后部视觉空间，使梅甘娜Ⅱ敞篷版跑车显的与众不同。     

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.     

JX4数字摄影测量工作站空三加密软件的开发应用

介绍了对JX4数字摄影测量工作站GXP -AAP空三加密软件在铁路数字化测图工程中的开发和应用情况 ,得出了相应的生产作业方法及经验体会