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）。     

联合作战对海军武器装备发展的影响

联合作战是现代战争的基本模式，而海军在联合作战中扮演着十分重要的角色。本文分析了联合作战的必然性，并探讨了海军在联合作战中的地位和作用，介绍了美国海军依据联合作战进行转型的情况，最后剖析了联合作战对海军装备和能力体系的影响。     

无缝线路长钢轨制动力的研究

根据钢轨与轨下基础间的相互作用关系，建立了路基上无缝线路长钢轨制动力计算模型和计算方法，并分析计算了线路纵向阻力、轮轨粘着系数、列车加载长度等计算参数对钢轨制动力的影响。     

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.     

建立科学合理的检修体制,探索并推进修程修制改革

随着我国社会主义市场经济体制的建立和完善,提出铁路企业机车检修体制改革的必要性以及我段在实施修程修制改革的做法和取得的实际效果.     

单片微机在地基系数测试中的应用

介绍单片微机用于地基系数测试装置中的特点,以及该测试系统的硬、软件设计原理.