城市客运模式选择研究

国内目前各城市的客运发展存在着地域之间不平衡,发展面临问题众多的局面,行业管理存在较多待破解的关键性问题.本文从城市客运管理运营模式作为研究视角,通过审视和比较世界不同城市交通的发展模式,结合影响城市客运模式的主要决定因素,论证国内目前的发展阶段和城市客运模式,研究提出适合于中国特点的、可持续发展的城市交通发展模式.     

黄山市慢行交通系统规划研究

在当前能源供应趋紧、城市交通拥堵加剧的背景下,规划完善的慢行交通系统,对于促进城市综合交通体系的可持续发展具有重要意义。基于黄山市慢行交通现状,明确黄山市慢行交通的功能定位和发展策略,构建主次搭配的分级慢行交通网络,并提出慢行设施的设置标准。     

一种混合评价模型在综合客运枢纽客流组织服务水平评价中的应用

提出将模糊综合评判法与决策中的模糊层次分析法和熵技术结合，建立混合熵权模糊综合评价决策模型，用于城市综合客运枢纽的客流服务水平的评价。此模型兼顾主观偏好和客观实际，结果表明该模型具有合理性与有效性。     

中欧班列(西安)开行实践与对策

中欧班列(西安)积极践行国家"一带一路"倡议,实现"一带一路"沿线各国以及欧洲间的有效衔接。为进一步推动中欧班列(西安)高质量发展,在分析中欧班列(西安)开行现状的基础上,探析中欧班列(西安)开行规模增长原因,主要体现在:西安区位优势明显,物流成本较低;铁路场站设施领先,枢纽功能凸显;物流贸易产业融合,促进班列增量开行。从打造全方位辐射通道、加强班列市场拓展、创新运营组织模式等方面,提出中欧班列(西安)发展对策,为中欧班列(西安)提供优质运输服务保障。     

车辆移动监控系统并发调度机制的研究

在车辆移动监控系统运行过程中,监控中心将同时接收到从不同车载终端发送过来的大量信息,这些信息分别对应着不同的事件。监控中心如何针对这些事件,及时做出不同的响应和处理是极为重要的。在对监控中心并发处理的性能要求进行分析的基础上,提出了优先数事件队列算法来实现车辆监控中心的并发调度机制,并给出了算法实现。     

Multiple criteria optimization method for the vehicle assignment problem in a bus transportation company

A vehicle assignment problem (VAP) in a road, long‐haul, passenger transportation company with heterogeneous fleet of buses is considered in the paper. The mathematical model of the VAP is formulated in terms of multiobjective, combinatorial optimization. It has a strategic, long‐term character and takes into account four criteria that represent interests of both passengers and the company's management. The decision consists in the definition of weekly operating frequency (number of rides per week) of buses on international routes between Polish and Western European cities. The VAP is solved in a step‐wise procedure. In the first step a sample of efficient (Pareto‐optimal) solutions is generated using an original metaheuristic method called Pareto Memetic Algorithm (PMA). In the second step this sample is reviewed and evaluated by the Decision Maker (DM). In this phase an interactive, multiple criteria analysis method with graphical facilities, called Light Beam Search (LBS), is applied. The method helps the DM to define his/her preferences, direct the search process and select the most satisfactory solution.     

人工智能在车辆自动驾驶中的应用

提出一种新的基于人工智能的感知 计划 动作agent结构实现智能车辆自动驾驶的方案。首先通过描述该结构的原理说明该结构可以解决自动驾驶中存在的一些问题,接着通过建立自动驾驶知识库阐述如何具体实现自动驾驶,最后通过仿真实验验证该方法能够为智能车辆实现自动或辅助驾驶提供一种非常有效的机制。     

广州亚运会道路建设规划方法解析

2010年第十六届亚运会将在广州举行。在简要介绍规划背景的基础上,阐述了规划的任务、目标与原则,针对亚运会期间不同群体交通需求的差异,分3个层面提出了服务亚运的道路建设规划,为其他举办大型活动的城市提供了较好的借鉴意义。     

基于B/S方式的运输生产管理系统设计与实现

介绍基于B/S方式的运输生产管理系统的设计和实现过程,就设计思路、系统目标、功能模块进行阐述,并对关键技术的设计作了具体论述.本系统已在淄博车务段试运行成功,并在原青岛铁路分局站段内推广使用.     

Technical and environmental effects of biodiesel use in local public transport

Biodiesel use in local public transport could be especially significant in improving air quality in cities. The purpose of the experiments described in this paper was to evaluate the various (10, 20 and 50%) blends of biodiesel with diesel in the context of the engine and pollution aspects. As regards the experimental use of these findings on municipal buses, these experiments were the first reference in Hungary. The ages (15–20 years) and types of buses (Ikarus-280, Ikarus-260) used in the experiments are still common vehicles in Hungarian public transport. During our measurements, there was a significant difference between the change in fuel consumption of articulated and solo buses in traffic when compared to test bench measurements. The proportion of the engine performance reduction is nearly the same as that for biodiesel share in the blends. Most pollutants were decreasing (both at idle and full rpm), but this reduction is not directly proportional to the increase of the blending percentage. However, as for CO₂, emission increase was observed in the case of idle rpm in comparison to normal diesel operation, even though this phenomenon was not due to biodiesel use, but the catalytic converter and the fact that biodiesel was used for the first time in the engine concerned.