江苏省港口集装箱运输现状分析及优化建议

从江苏省港口集装箱运输现状着手,针对江苏省各港口既有发展目标,从运输的经济性、可靠性、系统性等方面．提出江苏省未来集装箱港口发展格局和优化建议。     

车辆动力学仿真中评判脱轨的直接方法

根据轮轨空间动态耦合关系 ,提出了一种根据轮轨接触点位置进行脱轨评定的直接方法 ,可用于对机车车辆动力学安全性分析评价。阐述了通过轮轨接触点进行脱轨评判的原理和采用此方法的优点。作为例子 ,运用货车 -轨道空间耦合模型 ,对 C62 A货车曲线通过进行了脱轨仿真计算。仿真结果表明 ,在仿真计算时采用此方法非常行之有效 ,评判直观、可靠     

复杂背景下钢材编号提取与字符分割技术

提出了一种复杂背景下多钢块图像编号的提取和分割方法．采用HSV颜色空间，并以饱和度为主区分前景和背景，再综合运用数学形态学运算及边界跟踪技术提取出钢块的有效区域．运用多投影直方图分割法对钢材区的编号进行行、列分割，并解决了干扰、字符粘连等问题，实现了编号的精确定位分割．实践表明泼方法的分割效果是良好的．     

Numerical Analysis of a Floating Offshore Wind Turbine by Coupled Aero-Hydrodynamic Simulation

Journal of Marine Science and Application - The exploration for renewable and clean energies has become crucial due to environmental issues such as global warming and the energy crisis. In recent...     

Resilience in transportation systems: a systematic review and future directions

ABSTRACT

The Belt and Road (B&R) initiative was introduced by the Chinese government to promote the worldwide economic development and multilateral cooperation between China and the associated countries. As a crucial part of global supply chains, transportation plays a key role to ensure the implementation of the B&R. Safety is one of the issues with great importance in transportation research. However, its foci have been expanded from traditional risk through security to resilience and sustainability. Resilience has attracted considerable interests from both researchers and practitioners across different research domains in recent years. Various studies have been conducted on transportation resilience from different perspectives. Consequently, different definitions have been developed to define and describe resilience. This paper presents a systematic review on transportation resilience with emphasis on its definitions, characteristics, and research methods applied in different transportation systems/contexts. It aims to figure out what transportation resilience is and what kind of essential characters it usually has. More importantly, research challenges are analysed and a future research agenda on the resilience of transportation systems is proposed. This paper will provide comprehensive insights into understanding the transportation resilience, as well as establish new horizons for relevant research topics within the context of the B&R.     

基于RCP的动车组制动系统电空转换单元控制仿真研究

由2个高速开关电磁阀和1个压力传感器构成的电空转换单元,是制动系统的核心部件之一,其控制策略直接关系到制动系统所施加制动力的精度,现在介绍电空转换单元的工作原理、影响因素的基础上,采用快速控制原型设计方法,针对该单元提出了一种有效的控制策略,为了使电磁阀能够对系统进行连续的调节,采用脉宽调制方式驱动阀,根据阀的占空比死区特性和系统的负压效应,对传统PID调节器进行改进,并在基于MicroAutoBox的半实物仿真平台上进行了在线实时仿真,结果表明,该控制策略能保证电空转换单元的转换精度和反应速度。     

修制磨削摆线轮齿形砂轮过程中金刚轮圆头中心轨迹的寻求

研究了修制磨削摆线轮齿形砂轮过程中金刚轮圆头中心轨迹的寻求方法，导出了其直角座标方程式，确定了金刚轮圆头半径的最佳值，运用作者编制的相应软件所得出的结果。解决了现场被加工摆线轮齿形超差问题。效果显著。     

一种改进的三次NURBS曲线生成算法

对三次NURBS曲线的方程表示进行了分析，对其分子，分母多项式进行了递推运算，并在此基础上得出了一种快速生成算法。     

舰船在三维非规则波中的航向航速优选

文章探讨了舰船在三维非规则波中，基于方向谱的六自由度摇荡及动力响应统计特征值的计算方法，并给出了计算结果和实船海试结果的对比，证实了算法是可行的，精度高于舰船在二维非规则波中基于频谱的计算结果。在此基础上，提出了舰船在三维非规则波中航向航速优选的求解模式和算例。     

信息资源在汽车维修业中的应用

信息资源广泛存在于经济、社会各个领域和部门,成为国民经济和社会发展的重要战略资源。应用于汽车维修业具有相当重要的意义,我省汽车维修业对信息资源的需求迫切,同时存在着维修人员学历不高、传统信息交换已不适应汽车维修发展等问题,因此非常必要将信息技术应用于汽车维修业。