Container liner fleet deployment: A systematic overview

Container liner fleet deployment (CLFD) is the assignment of containerships to port rotations (ship routes) for efficient transport of containers. As liner shipping services have fixed schedules, the ship-related operating cost is determined at the CLFD stage. This paper provides a critical review of existing mathematical models developed for the CLFD problems. It first gives a systematic overview of the fundamental assumptions used by the existing CLFD models. The operating characteristics dealt with in existing studies are then examined, including container transshipment and routing, uncertain demand, empty container repositioning, ship sailing speed optimization and ship repositioning. Finally, this paper points out four important future research opportunities: fleet deployment considering ship surveys and inspections, service dependent demand, pollutant emissions, and CLFD for shipping alliances.     

Recursive expected conditional value at risk in the fleet renewal problem with alternative fuel vehicles

We study the fleet portfolio management problem faced by a firm deciding which alternative fuel vehicles (AFVs) to choose for its fleet to minimise the weighted average of cost and risk, in a stochastic multi-period setting. We consider different types of technology and vehicles with heterogeneous capabilities. We propose a new time consistent recursive risk measure, the Recursive Expected Conditional Value at Risk (RECVaR), which we prove to be coherent. We then solve the problem for a large UK based company, reporting how the optimal policies are affected by risk aversion and by the clustering for each type of vehicle.     

Optimization of traffic demand management policy in China: towards a sustainable mode split

The rapid increase in private car use in large metropolitan areas has led to irrational travel mode splits and severe traffic problems. Traffic demand management (TDM) is an effective policy to achieve a more sustainable development of traffic systems. This study analyzes the relationships between TDM policy, mode split, and travel mode choice using Stackelberg game theory. Then, using 0–1 programming, it establishes a combination of TDM policy instruments that can achieve a more sustainable mode split in a city and provides a case study in China. The method presented in this research has strong theoretical implications for TDM policymakers.     

基于VC＋＋6．0的扩展ASCII码的串行通信的研究

作者介绍了在VC 6．0环境下，采用ActiveX控件实现串行通信的一种方法，能够以二进制方式通信，解决了扩展ASCII码的串行传输问题。着重讨论了ActiveX控件的机制和VC 6．0环境下的程序设计方法。     

客运专线旅客列车开行方案的多目标双层规划模型

客运专线建设目的是为更好地满足旅客的出行需求，因而其列车开行方案也必须体现以旅客为本，服务旅客、方便旅客的原则。首先提出旅客出行方便度概念，并研究不同时段旅客出行的方便度，绘制方便度曲线，然后分析不同类型列车的客流平衡条件，建立不同类型列车的广义费用函数，在此基础上，建立制定客运专线列车开行方案的多目标双层规划模型。该模型以列车开行的最大收益和旅客的最大方便度为目标，同时考虑基于旅客最小出行费用的不同列车配流问题，并利用matlab编程，实现了求解该模型的混沌算法。最后以制定2008年石太客运专线的列车开行方案为例来验证该模型和算法，得到满意结果。     

学生考试成绩评价系统的设计与实现

利用计算初编程,采用难度指数(P)及区别度指数(R)等多种分析参数实现对学生考试成绩以及教师试卷质量的分析。为从学生对教学内容掌握情况及教师的教学情况两方面进行客观的教学评价提供了依据。     

可编程逻辑器件在机车逻辑控制系统中的应用

在分析了Lattice公司的在系统可编程逻辑器件isLSI1032E的结构和设计方法的基础之上，介绍了ISP技术及CPLD在机车逻辑控制系统中的应用，叙述了使用ispEXPERT进行设计的方法及流程，并对机车逻辑控制设计中的一些问题进行了讨论。     

海运空箱调运模糊优化研究

介绍应用模糊规划的方法研究海运集装箱空箱调运问题,模型以空箱调运和租借费用最小为目标函数,考虑空箱供给能力、空箱需求量和空箱运输容量限制等条件,并考虑到空箱需求量是模糊数时的情况。