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191.
David Briginshaw 《轨道交通》2007,(5):71-71
联邦皮尔逊机场轨道交通线,又叫蓝22线,为私营线,该线起自联邦车站,沿着CN Rail的既有韦斯顿走廊与安省公车公司的通勤列车共线运行,全长24.8km。预计2006年开始,到2009年开通。 相似文献
192.
Gonçalo Homem De Almeida Correia Diana Ramos Jorge David Marques Antunes 《智能交通系统杂志
》2014,18(3):299-308
》2014,18(3):299-308
Car-sharing systems are an alternative to private transportation whereby a person may use an automobile without having to own the vehicle. The classical systems in Europe are organized in stations scattered around the city where a person may pick up a vehicle and afterward return it to the same station (round trip). Allowing a person to drop off the vehicle at any station, called one-way system, poses a significant logistics problem because it creates a significant stock imbalance at the stations, which means that there will be times when users will not have a vehicle available for their trip. Previous mathematical programming formulations have tried to overcome this limitation by optimizing trip selection and station location in a city in order to capture the best trips for balancing the system. But there was one main limitation: The users were assumed to be inflexible with respect to their choice of a station, and held to use only the one closest to their origin and destination. If the user is willing to use the second or even the third closest station the user could benefit from using real-time information on vehicle stocks at each station and be able to select the one with available capacity. In this article we extend a previous model for trip selection and station location that takes that aspect into account by considering more vehicle pick-up and drop-off station options and then apply it to a trip origin–destination matrix from the Lisbon region in Portugal. Through the extended formulation we were able to conclude that user flexibility allied with having information on vehicle stocks increases the profit of the company, as people will go directly to a station with a vehicle available, thus making the use of the fleet more efficient. Observing the size of the stations resulting from the model, we also concluded that the effect of information is enhanced by large car-sharing systems consisting of many small stations. 相似文献
193.
Mehdi Imani Masouleh David J. N. Limebeer 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2018,56(7):1118-1138
In this study we will estimate the region of attraction (RoA) of the lateral dynamics of a nonlinear single-track vehicle model. The tyre forces are approximated using rational functions that are shown to capture the nonlinearities of tyre curves significantly better than polynomial functions. An existing sum-of-squares (SOS) programming algorithm for estimating regions of attraction is extended to accommodate the use of rational vector fields. This algorithm is then used to find an estimate of the RoA of the vehicle lateral dynamics. The influence of vehicle parameters and driving conditions on the stability region are studied. It is shown that SOS programming techniques can be used to approximate the stability region without resorting to numerical integration. The RoA estimate from the SOS algorithm is compared to the existing results in the literature. The proposed method is shown to obtain significantly better RoA estimates. 相似文献
195.
笔者曾讨论了一些有关基础设施建设资金的看法,最后得出的结论是:为基础设施建设制定的收费标准既应该考虑到基础设施基金的因素,也不能与因政治决策而导致的基础设施的税收政策分开.法国根据1997年2月12日的法律和1997年5月5日的法令实行了改革,原则上规定,由政府在两年期限内对收费标准进行控制,第一、第二年的数额分别为58.5亿和60亿法郎.这样就等于说,交税者每年要在基础设施建设方面支付250亿~260亿法郎的税金.因此税收的数额将比以往政府包揽的SNCF(法国国营铁路公司)的费用大两倍. 相似文献
196.
Transportation - Managed lanes (MLs) are a tool to more efficiently operate segments of a freeway. As ML prevalence increases in the United States of America, it is important to understand travel... 相似文献
197.
Michael Barnett David Gatfield Bent Overgaard Claire Pekcan Allan Graveson 《WMU Journal of Maritime Affairs》2006,5(2):127-142
The objective of the study was to provide, through a series of interviews with key personnel from a range of European Member
States, an overview of the following:
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Possible and actual career paths of seafarers; 相似文献
198.
介绍了南非引进在英国运营的Electrostar电动车组的结构特点及主要技术参数。 相似文献
199.
卜昕 《西安交通大学学报(英文版)》1995,(2)
NOVELPHOSPHORYLATIONSITESOFEUKARYOTICINITIATIONFACTOR-4EANDEVIDENCETHATPHOSPHORYLATIONSTABILIZESINTERACTIONSOFTHEP~25ANDP~220... 相似文献
200.
Theconceptofwirelessnetworkwasintro ducedaround 1 980 [1,2 ] ,IEEE 80 2 .1 1forWirelessLocalAreaNetwork (WLAN )was publishedinJune 1 997[3] .Nowavarietyofwirelesstechnolo giesandproductshavebeendeveloped ,theyarebe comingtheviablecomplementarysolutionstowirednetworks[1] ,suchasLANextension ,inter LANbridges,ad hocnetworking ,nomadicaccess,etc..Moreover,wirelessalsoproducesavarietyofnewapplications,suchasmobileeducation ,computing ,bankingandsoon .Anewmobilecommerceisforthcoming .Thebig… 相似文献
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