基于标杆管理的第三方物流供应商选择研究

随着企业越来越关注自己的核心竞争力,物流外包成为一种趋势,如何选择优秀的物流供应商成为企业战略决策的一个重要问题,本文通过分析以往供应商选择问题中的优缺点,在深刻理解标杆管理的思想的基础上,提出基于标杆管理的第三方物流供应商选择模型,该模型创新地采用最近邻近法进行待选供应商和标杆供应商的相似程度计算,具有较大的实用意义。     

路面铣刨机对戈壁地表砂土收集能力试验研究

通过利用路面铣刨机对砂石料和细砂料进行切削收集试验,研究了市场现有的路面铣刨机产品对戈壁砂土的收集能力。试验表明：将铣刨方法用于戈壁污染砂土收集在技术上是可行的,但为了避免砂土污染物向切削层以下土壤交叉和扩散,应减少砂土刨削收集量,提高其铣削的收集能力,并对现有的路面铣刨机产品进行适当改造。     

美国集装箱港口废气减排实践与经验

为寻找集装箱港口废气减排的有效途径，通过对美国集装箱港口废气排放现状和减排实践进行分析，归结出各类废气排放源的特点和排放规律，并结合当前燃油、船舶和港口实际状况，总结出如下减排经验：（1）提高燃油质量；（2）使用替代燃料，采用先进技术；（3）加强港口间协作；（4）创建减排基金，提供财政支持。     

市郊铁路投融资模式选择策略研究

未来大规模的市郊铁路建设将给地方政府带来融资难题。针对市郊铁路的投融资困境,结合项目特点,基于全生命周期理念建立了由项目总体融资模式、初始融资模式和再融资模式三个选择层面构成的市郊铁路投融资模式选择体系。分析了多种投融资模式在市郊铁路建设和运营中的应用。     

雷达视频联合检测技术在北横通道的应用研究

针对城市地下道路的场景和数字化交通管控需求,比较当前车辆检测和事件分类技术(例如线圈检测、红外检测、雷达以及视频等方式)在交通信息检测中的优势与劣势,提出了基于雷达视频联合的交通流检测系统.该系统可以检测更加多元的交通流信息,在复杂特殊的交通场景下仍可以持续稳定地采集和获取交通流状态和事件信息,为道路管理者提供决策依据.通过在上海北横通道的实际应用证明,雷达视频联合检测系统基本满足对城市地下道路的交通流状态信息和事件信息检测的需求,为后期城市地下道路智慧化建设和主动管控提供参考.     

A stochastic concession model for infrastructure projects under build-operate-transfer schemes

Concession period is a key factor in the arrangement of a build-operate-transfer (BOT) contract. This paper proposes a stochastic concession period model for infrastructure projects under a BOT scheme, which takes into account the impact of risks and the risk attitudes of the private investor and the government. A hypothetical case is simulated by using the Monte Carlo simulation method to illustrate the proposed model. The results indicate that even for a project with the same estimations, the concession interval can be different and depends a lot on the risk attitudes of the private investor and the government. The proposed model provides a more reasonable concession interval based on which a specific concession period can be obtained through negotiation between the two parties.     

Urban end distribution optimization under e-commerce environment

With the rapid development of e-commerce, urban end distribution plays more and more important role in e-commerce logistics. The collection and delivery points (CDPs), between online retailers and customers, provide a way to improve the service quality of urban end distribution. But it will be more difficult to obtain an optimal solution of urban end delivery plan when many CDPs joint a complicated delivery network, since the solution space is always too large for many traditional heuristic algorithms to search. In this paper, a two-stage optimization method based on geographic information system (GIS) and improved cooperative particle swarm optimization (CPSO) is proposed. This method takes full advantage of powerful network analysis of GIS and strong global search of CPSO. A new cooperative learning mechanism, global sub-swarm, local sub-swarm and normal sub-swarm (GS-LS-NS), is used to improve the search mode of CPSO. Finally, several experiments are conducted to show the better performance of GIS-CPSO, compared with single PSO, GIS-CPSO and ArcGIS (software of GIS) separately. The conclusion of this research is much useful and applicable for logistics service providers.     

机械化公路建设企业BT项目资产证券化定价研究

依托上海某证券化项目,以13个同质、不同地域的市政道路回购款收益为基础资产作快速回笼前期投资;通过运用期权调整利差法,探讨了异于普通收费权证券化的另类BT项目回购款证券化的定价,并通过实证研究推导出此BT项目回购款资产证券化过程中的定价行为.     

应用粒子群模型优化路面维护资金分配

提出一种路网养护资金分配模型,根据每个路段的具体破损类型,以整个路网道路水平的最优化作为目标函数,并应用粒子群优化技术求解模型,同时以典型案例来证明模型和算法的可行性.结果表明:该算法程序在现有资金约束下能够达到最佳养护效果,使得有限的预算得到更为合理的使用.