Sustainable service design and revenue management for electric tour bus systems: seoul city tour bus service and the eco-mileage program

Sustainable tourism has true sustainability when it is designed economically and in an environmentally friendly fashion. A variety of methods has been explored to achieve sustainable tourism, and the use of new technologies is a significant trend for sustainable tourism. In the City Tour Bus service, an environmentally friendly tour service can be achieved by using electric buses. Moreover, the social energy saving program helps to reduce the economic burden of building eco-friendly services by providing economic incentives as rewards for environmental contributions. Two mathematical models are newly developed to quantitatively design and operate a sustainable City Tour Bus service. Mathematical model I is developed with two objective functions of minimizing total investment cost and CO₂ emissions. It derives from Pareto solutions with different number of electric buses and battery capacities. Based on the solutions of mathematical model I and the economic incentive from the social energy saving program, mathematical model II investigates the optimal unit service price. Proposed quantitative approaches are applied to the Seoul City Tour Bus service with Seoul Eco-Mileage Program. These new approaches are expected to build and manage sustainable tourism system in scientific way. Moreover, they will provide quantitative bridge between sustainable transportation system and social programs beyond tourism industry.     

中置客车发动机悬置系统试验研究

中置客车发动机悬置系统匹配直接影响整车的舒适性,针对中置客车原悬置存在的不足进行了改进设计,通过试验验证改进后的悬置,满足发动机厂家对悬置系统振动传递率的要求,具有较好的隔振效果。     

Road Travelers' Motivations and Loyalty: Train Versus Bus Services

ABSTRACT

Railroad and highway travel may differ not only in terms of their nature but also in terms of their appeal to travelers. Travelers may have different motivations to use either transportation mode in either inbound or outbound directions. Travelers may also demand different services or service traits of the provider in order to gain satisfaction in the short-term and/or become loyal customers in the long-term. This study uses a 2?×?2 design to compare train and a bus service between two cities 250 km apart in a country where these two means of transportation are equally essential. The study also compares the outbound and inbound routes in order to acknowledge additional differences in both the travelers' motivations and the customers' loyalty formation. The results show that travelers' motivations for choosing train or bus transportation differ based on whether they are leaving from or returning to the city that was the original point of departure. They also show that customers' long-term relationships with the provider significantly differ according to means of transportation and routes used. Characteristically, customers in the studied sample prefer train transport to leave and bus to return based on their idiosyncratic motivations of seeking value or money savings and their expectations of mutual loyalty. This research suggests practical consequences both for understanding travelers' motivations and customer loyalty formation and for managing policies regarding train and bus services competing for specific segments of travelers.     

基于Nandflash阵列的高速存储技术

介绍了传统高速存储的实现方式,分析了用Nandflash实现海量存储的优点,实现了 基于Nandflash阵列的实时高速存储模块。存储模块采用光纤FC作为数据输入端,在FPGA控 制下实时存储到Nandflash阵列中,并将存储的数据通过CPCIE总线下传给其他模块作实时或 事后分析、判读、处理、回放。实验结果表明,基于Nandflash的存储阵列,存储速度可达 到900 MB/s以上,满足高分辨率高帧频CCD相机及SAR成像存储需求。     

基于区间分析的公交客流推导方法

通过大数据可以更加精确地推导公交站点上下车客流区间。利用公交GPS(Global Positioning System,全球定位系统)定位数据、IC卡(Integrated Circuit Card,集成电路卡)刷卡数据,生成区间数形式的公交客流需求更具实践意义。文章首先基于30m半径的站点缓冲区生成车辆到站时刻表,并利用时间匹配法推导上车站点,其次考虑乘客出行距离、站点周边土地利用情况、客流吸引强度、站点换乘系数建立公交下车站点概率推导模型,然后运用区间分析理论,采用置信区间优化算法计算区间数形式的公交客流需求。最后以苏州市1021路公交为期4周的刷卡数据为例进行实例分析。     

变电站防误闭锁装置运行故障及解决方案

随着科学技术的不断更新,现代电力系统规模愈来愈大,电压等级愈来愈高,防误闭锁装置在电力系统中的也得到了广泛应用,为了确保电力系统的安全稳定运行,避免各类误操作事故的发生,本文对变电站防误闭锁装置在使用过程常见问题进行分析。     

单端正激变换器混合离散优化设计

本文讨论了四路输出单端正激变换器功率变换级的优化设计方法,给出了优化数学模型。其优化设计方法能直接用于工程设计。文中给出了一个实例及计算结果。     

乌鲁木齐市快速公交系统开发研究

在对乌鲁木齐市公交系统研究的基础上,通过技术方案的对比分析,设计出新型的适用于乌鲁木齐市现况的快速公交系统方案。     

备用电源自投装置的应用及缺陷解决方案

介绍了110kV变电站的备用电源自投装置的各项应用以及常见缺陷,对不同种类保护从安全性、可靠性、维护性的角度进行分析,提出了缺陷解决方案及处理意见。     

汽车客运站建设项目客流量预测分析

当前,我国的公路建设取得了显著的成就,建设了很多高等级的公路,促进了我国公路交通事业的跨越性发展。但是,作为配套设施的汽车客运站建设却跟不上我国公路建设的步伐,发展相对滞后,我国的汽车客运站建设相关的可行性研究以及指标体系还不够完善,这在一定程度上阻碍了我国交通业的发展。因此,研究客运站建设的可行性是很有必要的。汽车客运站建设的可行性研究课题中涉及的内容比较多,本文从客运站的运量入手展开研究。