链式单索抓斗开闭机构的改进设计

常用的链式单索抓斗都有开闭机构寿命短、链条上下不灵活且易磨损等缺点 .主要原因是偏心板与链条之间发生碰撞和摩擦,挂球倾侧与偏心板形成点接触,挤压应力过大.碰撞和摩擦发生于下列工况中:     

水翼船翼柱自位球面轴承复合动载磨损试验研究

通过水翼船翼柱自位球面轴承外座圈和止推套环衬垫的复合动载磨损试验，证明青铜在复杂工况下具有良好的耐磨性，可用作轴承外座圈与衬垫的制造材料。     

铁路集装箱内陆港物流中心化的相关问题研究

铁路集装箱内陆港作为运输网络的枢纽节点,具有与其他运输方式衔接的良好条件,具备向区域物流中心发展的先行优势.基于对实现条件共性的对比分析,提出铁路集装箱内陆港向物流中心发展的可行性,并对物流中心化的铁路集装箱内陆港业务流程进行设计,在此基础上提出实现铁路集装箱内陆港物流中心化、促进铁路集装箱多式联运持续发展的建议措施.     

空中信息平台抗干扰数据传输系统的研究

以空中信息系统为依托的空中信息作战，必将成为未来信息化战争的主战场之一，加快发展我军空中信息作战能力势在必行。作为全新的空中信息化作战对作战提出新要求，围绕作为空中信息系统神经系统的空中信息平台，阐述了空中信息平台数据传输的主要技术，新数传体制的确立，方案的分析。     

试论湖南交通运输行业职业教育改革

对我省目前交通运输职业教育现状进行了分析,阐述了我省交通运输行业职业教育改革的基本思路。     

An equity‐based passenger flow control model with application to Hong Kong‐Shenzhen border‐crossing

Cross‐border passengers from Hong Kong to Shenzhen by the east Kowloon‐Canton Railway (KCR) through the Lo Wu customs exceed nearly 200 thousand on a special day such as a day during the Chinese Spring Festival. Such heavy passenger demand often exceeds the processing and holding capacity of the Lo Wu customs for many hours a day. Thus, passengers must be metered off at all entrance stations along the KCR line through ticket rationing to restrain the number of passengers waiting at Lo Wu within its safe holding capacity. This paper proposes an optimal control strategy and model to deal with this passenger crowding and control problem. Because the maximum passenger checkout rate at Lo Wu is fixed, total passenger waiting time is not affected by the control strategy for given time‐dependent arriving rates at each station. An equity‐based control strategy is thus proposed to equalize the waiting times of passengers arriving at all stations at the same time. This equity is achieved through optimal allocation of the total quota of tickets to all entrance stations for each train service. The total ticket quota for each train service is determined such that the capacity constraint of the passenger queue at Lo Wu is satisfied. The control problem is formulated as a successive linear programming problem and demonstrated for the KCR system with partially simulated data.     

铁路运输业引入竞争机制的探讨

运用产业组织理论对铁路现状进行分析，从政企分开、放松管制、调整产品结构、实现产品差别化、多元化融通资金以及引进国外先进技术和管理机制、发挥后发优势等方面提出铁路必须引入竞争机制才能有所发展、有所创新，才能能力面对我国入世后的挑战。     

列车检修四字作业法

为了保证提高车辆检修质量和铁路运输安全,根据铁路技术管理规程和有关车辆检修规章和作业标准的规定,结合作业的实际,用四个字的方法汇集和提出了客货车列车检修作业方法,便于掌握和运用.     

航海院校对海员职业适应能力的培养途径

根据海员职业具有动荡性、风险性、艰苦性、独立性和变化性的特点。以及海员在海上工作生活的环境条件，提出航海院校在航海教育过程中应注重海员职业适应能力的培养，并提出几种培养的途径。     

Prediction of Tyre-Road Friction with an Inverted-Boat Shaped Pressure Distribution

In this paper, a predictive model is formulated to describe the frictional forces between the tyre and road. The model is based on an inverted-boat normal pressure distribution. The determination of the input parameters is simplified by the suggested stationary point approach for calculation of the frictional coefficients, which are analytically obtained. The verification of the established model shows that the predicted values are in a good agreement with measured data. A sensitivity study of the shape factors demonstrates that it is necessary to take the unsymmetric normal pressure distribution proposed in this paper into consideration to accurately predict frictional forces.