Xem 1-20 trên 20 kết quả Railway systems
  • An empirical study of scale economies in the Chinese Railway System Although results are not presented here, I have estimated several additional specifications of the basic empirical test. The absence of a positive choice effect does not seem to derive from the particular weighting of the data used here—one might prefer to weight MSAs equally, or by the number of SAT-takers, rather than by their high-school-age populations—nor from the inclusion in the sample of schools with too few SAT-takers to permit accurate estimation of the school mean...

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  • In railway applications, performance studies are fundamental to increase the lifetime of railway systems. One of their main goals is verifying whether their working conditions are reliable and safety. This task not only takes into account the analysis of the whole traction chain, but also requires ensuring that the railway infrastructure is properly working. Therefore, several tests for detecting any dysfunctions on their proper operation have been developed.

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  • I have now been in India for over two years and a half after my return from South Africa. Over one quarter of that time I have passed on the Indian trains travelling third class by choice. I have travelled up north as far as Lahore, down south up to Tranquebar, and from Karachi to Calcutta. Having resorted to third class travelling, among other reasons, for the purpose of studying the conditions under which this class of passengers travel, I have naturally made as critical observations as I could. I have fairly covered the majority of railway systems during...

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  • INFRASTRUCTURE DESIGN, SIGNALLING AND SECURITY IN RAILWAY Edited by Xavier Perpinya .Infrastructure Design, Signalling and Security in Railway Edited by Xavier Perpinya Published by InTech Janeza Trdine 9, 51000 Rijeka, Croatia Copyright © 2012 InTech All chapters are Open Access distributed under the Creative Commons Attribution 3.0 license, which allows users to download, copy and build upon published articles even for commercial purposes, as long as the author and publisher are properly credited, which ensures maximum dissemination and a wider impact of our publications.

    pdf0p greengrass304 18-09-2012 32 7   Download

  • In the current five-year plan (1991-1995), China plans to place greatest efforts on developing infrastructure, particularly thermoelectric and hydropower installations, new railway systems, large deep-sea ports, a national phone network, and food processing and chemical plants. Local governments also have their own blue prints for local construction besides the central government integrative plan. For example, Guangxi province has 24 new and rebuilt major projects in 1992.

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  • Fuzzy control theory is an emerging area of research. At the core of many engineering problems is the problem of control of different systems. These systems range all the way from classical inverted pendulum to auto-focusing system of a digital camera. Fuzzy control systems have demonstrated their enhanced performance in all these areas.

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  • You should spend about 20 minutes on this task. The take below gives information about the underground railway systems in six cities. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

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  • While most consumers still base their travel decisions largely on price, value for money, service and availability, more and more people are taking environmental factors into account. The railway community is therefore working hard to provide customers with comprehensive information on climate change, air pollution and the ‘external costs’ of transport. New internet-based tools, such as EcoPassenger and EcoTransIT (see Figure 6), are making a range of data available to customers.

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  • A more specialised health care insurance market – private long-term care (LTC) insurance – is absent or very limited in countries with comprehensive public long-term care benefits, such as in Scandinavia, the Netherlands, Japan and Luxembourg. In Germany, LTC cover is statutory for every resident.

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  • It is widely recognised that high-speed lines attract new travellers to the railway system. A recent study undertaken on the Madrid-to-Seville AVE line also revealed big savings in terms of greenhouse gas emissions, showing that without the AVE an additional 48,000 tonnes of CO2 would be produced on this route every year. AVE passengers were asked which transport mode they would have chosen if there were no high-speed trains: 13% said conventional train, 26% air transport, 24% private car, 3% coach and 34% said they would not have made the journey at all....

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Advanced Fade Countermeasures for DVB-S2 Systems in Railway Scenarios

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  • “Designing the quality management model of passenger transport service (QMMPT) by railway in Vietnam” is studying to provide solutions development QM system, meeting urgent needs for the innovation of management system for railway transport (RT) in Vietnam.

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  • To help with this work, we have held discussions with DfT, Network Rail, ROSCOs, manufacturers, and the Railway Industry Association (RIA) but this document has been prepared as ATOC’s own viewpoint on the issues rather than attempting to draw a full industry consensus. We intend to go forward through the development of a wider Rolling Stock Strategy, that we originally proposed, and which received support from Government in the recent Command Paper.

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  • The information in this book is given in good faith and belief in its accuracy, but does not imply the acceptance of any legal liability or responsibility whatsoever, by the Institution, or by the author, for the consequences of its use or misuse in any particular circumstances . All rights reserved . No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission of the copyright owner .

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  • Fuzzy control is a practical alternative for a variety of challenging control applications since it provides a convenient method for constructing nonlinear controllers via the use of heuristic information. Such heuristic information may come from an operator who has acted as a “human-in-the-loop” controller for a process. In the fuzzy control design methodology, we ask this operator to write down a set of rules on how to control the process, then we incorporate these into a fuzzy controller that emulates the decision-making process of the human.

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  • Design of helical spring for variable load In the earlier lecture, we have learned about design of helical springs for static loads. In many applications, as for example in railway carriages or in automobile suspension systems the helical springs used are constantly under variable load. Hence, it is understood that whenever there is a variable load on a spring the design procedure should include the effect of stress variation in the spring wire.

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  • Railroad Bridges 23.1 Introduction Railroad Network • Basic Differences between Railroad and Highway Bridges • Manual for Railway Engineering, AREMA 23 23.2 23.3 23.4 Railroad Bridge Philosophy Railroad Bridge Types Bridge Deck General • Open Deck • Ballast Deck • Direct Fixation • Deck Details 23.5 Donald F. Sorgenfrei Modjeski and Masters, Inc. Design Criteria Geometric Considerations • Proportioning • Bridge Design Loads • Load Combinations • Serviceability Considerations W. N. Marianos, Jr. Modjeski and Masters, Inc. 23.

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  • Trunked Mobile Radio and Packet Data Radio In addition to the public radio telephone service and the paging service, there are other radio services that are not accessible by the public. These radio systems, called the non-public land mobile radio network , have access to frequencies that cannot be used by the public but only by specific users or groups of users.

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  • Today’s ‘renaissance’ of the railways has only been possible thanks to a multitude of powerful research initiatives aimed at making fundamental improvements in the system as a whole. Now, keeping rail at the forefront as the most environmentally friendly major transport mode requires an even more rapid adoption of new technologies for clean and effi cient energy.

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  • According to legislation introduced in 2001, Switzerland is already paying to install low-noise systems in its national railway vehicles. Vehicles fi tted with noise-reducing technologies are refunded 0.01 CHF per axle kilometre travelled in Switzerland. This translates into a €7.50 bonus for a typical four-axle wagon on the 300 km Basel-Chiasso line, an important link in the Germany- Italy transit route. A complete freight train with composite brake blocks gets a €93 refund, which is 5% of the total track access charge.

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