A tool to aid redesign of flexible transport services to increase efficiency in rural transport service provision

Rural areas generally have lower and more dispersed demands for travel which cannot sustain conventional public transport services and consequently have a greater number of flexible and demand responsive transport services operating. These services usually operate on a stand-alone basis, are often subsidized and are typically only accessible by certain passenger types or for specific trip purposes. This generally results in uncoordinated and inefficient transport provision overall. The Flexible integrated transport services (FITS) system featured in this paper has been designed to address this problem. FITS can be used as a planning tool to assess potential benefits from relaxing operating constraints (e.g., a service's operating boundaries), which can potentially suggest service redesign. It also includes the capacity to assign subsidy payments on a trip by trip basis to increase cost efficiency whilst meeting a greater proportion of transport needs. The case study in the paper focusses on transport to health in the Aberdeenshire and Morayshire areas of Scotland in the UK. Despite flexible transport operators receiving public funds to meet passenger needs, this is currently being supplemented by public bodies paying large amounts in taxi fares in instances where there is a statutory obligation to provide travel but where no other suitable transport service exists. The results demonstrate the potential substantial savings which could be realized by allowing transport operators to redesign their services by relaxing constraints and by the reassignment of subsidies: resulting in more passenger demands being met and a reduction in public spending on taxi fares.     

中小型集装箱船发展趋势分析

在对集装箱船大型化发展现状分析的基础上,指出了中小型集装箱船发展中值得关注的趋势,提出了中小型集装箱船更符合柔性化运输服务的需求,给出了中小型集装箱船发展前景看好的结论。     

增加石化码头工艺灵活性适应多种商机的设计理念

分析了南方市场石化码头建设和营运的特点,提出了该类码头的工艺设计,应当顺应市场需求的设计理念和若干具体措施.     

先进电力电子技术在超高压输电网中的应用

简要介绍了先进电力电子技术在输配电中的应用,主要包括高压直流输电、柔性交流输电和定制电力技术三个方面.在叙述电力电子技术的发展和应用情况的基础上,重点阐述了由中国电力科学研究院自主集成的可控串补和静止无功补偿器成套设备的关键技术,强调了自主开发的重要性.     

《伊利亚特》中的"三角图式"

荷马史诗作为古希腊文学的最高成就，古今中外对它的解读可谓层出不穷，本文试从荷马史诗《伊利亚特》的叙事结构、主要人物阿基琉斯、情节内容和风格入手挖掘到其所呈现出来的不同的“三角图式”：稳定的、立体的、复杂的、和谐的。这些“三角图式”不仅体现了古希腊“荷马时代”的“几何形风格”，而且其所蕴涵的意义也有助于解读和把握这样一部文学经典的精髓和要义。     

数字跳频通讯技术(FHSS)在长江航道管理上的应用

简要介绍跳频通讯技术(FHSS)的基本概念、技术特点及组网方式。结合长江航道的具体特点,论述了该技术在航标监控、数据传输、通讯导航中的应用与发展。     

悬链线柔索索长的计算

假设悬索自重沿弧长均匀分布 ,由悬索微元力学平衡关系 ,推导悬索曲线方程。对悬索微元进行积分 ,进一步推出悬索有应力索长计算公式的显示表达。根据虎克定律 ,分别推出悬索无应力索长的精确计算公式和一阶近似公式。对索长各公式间关系进行了讨论 ,算例结果证明本文公式是正确的     

系混凝土块压载体软体排受力特性研究

针对长江水深流急的特点，考虐铺设过程中动水压力对软体排受力的影响，对系混凝土块压载体软体排在沉放过程中的受力情况进行分析。建立了采用各种铺排方式时软体排受力计算公式，并将计算结果与现场测试结果进行了对比。结果显示：理论计算与现场测量结果吻合较好，相对误差仅为4％左右。     

水上交通安全观念创新之探讨

党和国家在科学发展观的基础上提出了创新的“安全发展”观念,落实到水上交通安全工作上,首先是水上交通安全观念的创新。本文对水上交通安全观念创新问题进行了初步探讨,提出安全具有相对性,要弄清楚“安全了才能更好地发展,发展了才能更加安全”的辩证关系,明确安全发展理念的本质仍在于科学地发展;应科学地观察和评价水上交通安全形势与状况,科学合理地设定安全指标;安全文化是安全发展的思想基础,与严格监管同等重要等观点,以期为我国水上交通安全工作的顺利开展指明正确的前进方向。     

X型排在长江中下游护滩工程中的应用

主要介绍X型系砼块软体排的现状及存在的问题，以及近期实施工程的改造措施。