船舶管理信息系统研发

经校企双方多年合作,采用先进船舶管理理念和标准化代码、运用国际先进的船岸通讯技术开发出的船舶管理信息系统完全符合国际、国内船舶管理行业的业务要求,该系统的研发成功对我国航运界实现船舶信息化和数字化管理起到了积极作用．     

桥式抓斗卸船机顶升牛腿的设计计算与应用

应用有限元软件Ansys对顶升牛腿结构进行建模及计算,提取应力结果进行屈曲校核,并简述现场顶升施工过程.     

Research on a multi-grid model for passenger evacuation in ships

In order to enhance the authenticity and accuracy of passenger evacuation simulation in ships, a new multi-grid model was proposed on the basis of a traditional cellular automata model. In the new model finer lattices were used, interaction of force among pedestrians or between pedestrians and constructions was considered, and static floor fields in a multi-level exit environment were simplified into cabin and exit static floor fields. Compared with the traditional cellular automata model, the multi-grid model enhanced the continuity of the passengers’track and the precision of the boundary qualifications. The functions of the dislocation distribution of passengers as well as partial overlap of tracks due to congestion were realized. Furthermore, taking the typical cabin environment as an example, the two models were used to analyze passenger evacuation under the same conditions. It was found that the laws of passenger evacuation simulated by the two models are similar, while the simulation’s authenticity and accuracy are enhanced by the multi-grid model.     

轨道交通梁式桥BIM辅助设计软件开发研究

为了满足轨道交通桥梁设计中的专业计算和建模需求,解决BIM桥梁正向设计实施困难的问题,结合轨道交通项目梁式桥的设计流程和操作习惯,提出以数据为依托的参数化解决方案。选取Bentley公司的Microstation软件进行轨道交通梁式桥设计程序开发,所开发的程序具有地质和线路专业资料获取、桥梁墩台及基础等构件管理、孔跨布置、墩台计算、一键式BIM模型创建、一键式计算和工程量清单输出等功能,为轨道交通桥梁BIM正向设计提供了有效的工具支撑。     

Complementarity formulations for the cell transmission model based dynamic user equilibrium with departure time choice, elastic demand and user heterogeneity

In this paper we formulate the dynamic user equilibrium problem with an embedded cell transmission model on a network with a single OD pair, multiple parallel paths, multiple user classes with elastic demand. The formulation is based on ideas from complementarity theory. The travel time is estimated based on two methods which have different transportation applications: (1) maximum travel time and (2) average travel time. These travel time functions result in linear and non-linear complementarity formulations respectively. Solution existence and the properties of the formulations are rigorously analyzed. Extensive computational experiments are conducted to demonstrate the benefits of the proposed formulations on various test networks.     

基于模糊聚类算法的船舶故障诊断技术

由于大型设备故障症状与故障原因之间关系十分复杂，使得传统诊断方法在实际应用中效果不理想。研究采用模糊C-均值聚类算法，将被诊断对象间故障和症状的特征通过建立模糊关系矩阵进行了故障分类，用当前所得的故障征兆群与过去该设备故障征兆结果相对照，找出最相似的结果，从而确定其故障。通过船舶主机轴系诊断的实例，充分证明了该方法的有效性。     

深圳北站国铁与地铁安检互认的换乘效率提升研究

高铁站是旅客跨城出行的重要节点,其与其他交通方式的接驳是影响旅客出行整体效率的关键因素。以深圳北站为案例,利用排队论仿真研究国铁与地铁换乘中重复安检带来的效率损失,并讨论去除重复安检的可行性。研究认为,实施安检互认后,在客流高峰期,深圳北站国铁换乘地铁平均可节省4.5 min,最长可节省10 min,地铁换乘国铁平均可节省2 min。安检互认受高铁站建筑设计和安检标准的影响,应根据实地情况制定安检互认的实现方案。     

轨道多波不平顺管理值探讨

目前,铁道部对提速线路轨道多波不平顺管理仅有定性要求,难以控制机车摇晃。通过对轨道多波不平顺与动态平稳性之间的关系分析,提出轨道多波不平顺管理值的定量化标准,为更好地控制机车摇晃提供理论依据。     

C＆C08交换机号码变换的实际应用

随着业务发展的需要，号码变换运用得越来越广泛，而且其灵活度的需求也越来越高。目前交换机提供的号码变换方式主要有号码准备、特殊号码变换、主叫号码分析、号首处理、中继承载等，可单独使用亦可搭配使用。下面以C＆C08128模交换机为例，对实际工作中的一些应用进行介绍。     

Estimating the costs of political populism: Traffic violation pardons in Korea

Since 1995, four presidents have granted six traffic violation pardons in Korea, and 24.6 million individuals have been the beneficiaries of these pardons. The objective of this paper is to explore how costly traffic violation pardons are by finding out the effects of traffic violation pardons on traffic accidents, and then estimating the economic costs caused by traffic violation pardons. Traffic violation pardons have the effect of raising traffic accidents by 4.3% and 3.6% per year and the economic costs of traffic accidents by 4.2% and 3.5% per year for two consecutive years after the pardons are granted.