نتایج جستجو برای: speed rail
تعداد نتایج: 214392 فیلتر نتایج به سال:
In April 2009 the US government unveiled its blueprint for a national network of high-speed passenger rail (HSR) lines aimed at reducing traffic congestion, cutting national dependence on foreign oil and improving rural and urban environments. In implementing such a program, it is essential to identify the factors that might influence decision making and the eventual success of the HSR project,...
A megacity is usually defined as a metropolitan area with a total population in excess of 10 million people. The number of megacities is increasing worldwide: in 1950 they were 4; in 1980 they were 28, in 2002 they were 39 and by 2015 they will be 59. In most agglomerations and megacities, urban planning and public infrastructure can guide the urban development in order to achieve a proper sust...
The shapes that networks form are thought to be related to the performance of networks during this process. Using reduced travel time as an evaluation criterion, this study examines growth of road and rail transportation networks to determine the differences in growth patterns that are caused by various factors, including speed on transportation network.
In the present paper we derive the optimal investment policy of investment in the high speed rail (HSR) project, under uncertainty, using the real options analysis (ROA) framework. We assume that the HSR demand, the main source of uncertainty, follows a geometric brownian motion with random jumps, complying with abrupt change of level caused by random events. The occurrence of such events is ca...
Reduced travel time, regional cohesion, economic development and environmental benefits were some of the reasons given to develop the High Speed network in Spain, the largest in Europe. Ever since the opening of the first High Speed line in 1992, High Speed Rail (HSR) have become a new travelling experience despite the fact that in the recent years several voices have raised concerns over a lac...
© 2013 Yang and Wang, licensee InTech. This is an open access chapter distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Hardware-in-Loop Simulation Technology of High-Pressure Common-Rail Electronic Contro...
Sakdirat Kaewunruen*, Joseph M. Sussman and Herbert H. Einstein 1 Birmingham Centre for Railway Research and Education, School of Civil Engineering, University of Birmingham, Birmingham, UK 2 High Speed Rail Research Group, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA 3 Department of Civil and Environmental Engineering, Massachuset...
Very high speed rail may be a competitive mode of transportation for California's future. This article presents an evaluation of the economic and comprehensive benefits and costs associated with such an endeavor. The results indicate competitive comprehensive rates of return and a potential for project self-financing, suggesting that such a project merits serious consideration by the State.
In the switch rail section of a high-speed turnout, wheel–rail lateral impact forepart curved is most important factor affecting passing performance. order to reduce and improve safety, complete vehicle–track multi-body dynamics model devised in this paper. The variation relationship when train passes through analyzed. force derailment coefficient are calculated under different parameters, wear...
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