降低集装箱场站翻箱率的应用管理

集装箱场站中经常存在大量的翻箱工作。文章希望通过对集装箱场站进口箱的翻箱作业的仿真,以对集装箱场站的翻箱运作提供一些翻箱原则选择上的建议。     

我国机动车安全技术检测发展动向

全面介绍了我国机动车安全检测技术的动向与发展趋势 ,供专业人员参考。     

Hybrid Optimization Algorithm Based on Wolf Pack Search and Local Search for Solving Traveling Salesman Problem

Traveling salesman problem(TSP) is one of the typical NP-hard problems, and it has been used in many engineering applications. However, the previous swarm intelligence(SI) based algorithms for TSP cannot coordinate with the exploration and exploitation abilities and are easily trapped into local optimum. In order to deal with this situation, a new hybrid optimization algorithm based on wolf pack search and local search(WPS-LS)is proposed for TSP. The new method firstly simulates the predatory process of wolf pack from the broad field to a specific place so that it allows for a search through all possible solution spaces and prevents wolf individuals from getting trapped into local optimum. Then, local search operation is used in the algorithm to improve the speed of solving and the accuracy of solution. The test of benchmarks selected from TSPLIB shows that the results obtained by this algorithm are better and closer to the theoretical optimal values with better robustness than those obtained by other methods.     

车辆二级维护中应解决的几个问题

在全行业实行运输车辆强制二级维护是为了保持全行业运输车辆良好的技术状况，更好地发展运输生产，而有些车主却存在着“重修理、轻维护”，怕耽误用车，怕多花钱等错误息想，同时由于不懂车辆技术要求，误认为二级维护多此一举。承修厂家同样也存在着“重修理、轻维护”的思想，对二级维护作为不规范、缺项、漏项，没有按照《汽车维护工艺规范》(JT/201-95)去进行二级维护作业。这些思想上的误区必然导致思想上的不重视，这就需要管理部门加强宣传，宣传二级维护的好处，首先让车主认识到车辆二级维护能给自己、给社会带来安全、带来效益，然后逐渐提高他们的自觉性。