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Author: Bernard Grun
Publisher:
ISBN:
Category : Chronology, Historical
Languages : en
Pages : 0
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Author: Bernard Grun
Publisher:
ISBN:
Category : Chronology, Historical
Languages : en
Pages : 0
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Author: Fahimeh Khoshniyat
Publisher: Linköping University Electronic Press
ISBN: 9176856313
Category :
Languages : en
Pages : 60
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Book Description
With increase in the use of railway transport, ensuring robustness in railway timetables has never been this important. In a dense railway timetable even a small disturbance can propagate easily and affect trains' arrival and departure times. In a robust timetable small delays are absorbed and knock-on effects are prevented effectively. The aim of this thesis is to study how optimization tools can support the generation of robust railway traffic timetables. We address two Train Timetabling Problems (TTP) and for both problems we apply Mixed Integer Linear Programming (MILP) to solve them from network management perspectives. The first problem is how robustness in a given timetable can be assessed and ensured. To tackle this problem, a headway-based method is introduced. The proposed method is implemented in real timetables and evaluated from performance perspectives. Furthermore, the impact of the proposed method on capacity utilization, heterogeneity and the speed of trains, is monitored. Results show that the proposed method can improve robustness without imposing major changes in timetables. The second problem addressed in the thesis is how robustness can be assessed and maintained in a given timetable when allocating additional traffic and maintenance slots. Different insertion strategies are studied and their consequences on capacity utilization and on the properties of the timetables are analyzed. Two different insertion strategies are considered: i) simultaneous and ii) stepwise insertion. The results show that inserting the additional trains simultaneously usually results in generating more optimal solutions. However, solving this type of problem is computationally challenging. We also observed that the existing robustness metrics cannot capture the essential properties of having more robust timetables. Therefore we proposed measuring Channel Width, Channel Width Forward, Channel Width Behind and Track Switching. Furthermore, the experimental analysis of the applied MILP model shows that some cases are computationally hard to solve and there is a need to decrease the computation time. Hence several valid inequalities are developed and their effects on the computation time are analyzed. This thesis contains three papers which are appended. The results of this thesis are of special interests for railway traffic planners and it would support their working process. However, railway traffic operators and passengers also benefit from this study.
Author: Daniel F. Stramara Jr.
Publisher: Wipf and Stock Publishers
ISBN: 1630876631
Category : Religion
Languages : en
Pages : 203
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Book Description
Sets of seven. 666. The Whore of Babylon and the Seven-headed Beast. How would first-century readers have heard these things? One can get at an answer by asking, How does the Book of Revelation compare with contemporaneous Jewish apocalypses? God's Timetable unlocks the hitherto unseen Jewish background to the Apocalypse based on the seven weeks leading up to Pentecost, the Harvest Feast. The meaning of Revelation suddenly becomes clearer. Stramara situates the Book of Revelation in its original context as a prophetic work regarding the end of the world, the final harvest, and Jesus as the fulfillment of expectations.
Author: Nishi Singh
Publisher: Createspace Independent Publishing Platform
ISBN: 9781523921713
Category :
Languages : en
Pages : 44
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Book Description
This little book has times tables from 1 to 20 with 12 rows of multiplication. That is all children should ideally learn! This book is suitable for children from the ages of pre-school and upwards. They can memorize the tables then test it afterwards. There is no magic formula for learning the times tables, they must do it the hard way which is to memorize them by heart. It will take months so there is no need for parents to get upset and panic if they aren't able to memorize it in an instance. Remember each child is different. Just ask your child to memorize these times tables one by one.
Author: United States. Congress. House. Committee on Education and Labor. Subcommittee on Employment Opportunities
Publisher:
ISBN:
Category : Affirmative action programs
Languages : en
Pages : 316
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Book Description
Author: Sharon Harley
Publisher: Touchstone
ISBN: 9780684815787
Category : History
Languages : en
Pages : 498
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Book Description
From Simon & Schuster, Timetables of African-American History chronicles the most important people and events in African-American history. Organized for easy reference in the popular timetables format, an illustrated chronology of the African-American experience covers significant people and events since 1492 in categories including Religion, Fine Arts, Law and Legal, Sports, and Science and Technology.
Author:
Publisher:
ISBN:
Category : Administrative law
Languages : en
Pages : 226
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Book Description
Author: Ingo A. Hansen
Publisher: WIT Press
ISBN: 1845645006
Category : Transportation
Languages : en
Pages : 225
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Book Description
The book comprises a number of research papers presented at several Computers in Railways Conferences. It has been compiled by Ingo A. Hansen, President of the International Association of Railway Operations Research (IAROR) and comprises selected papers originating from different countries, such as Denmark, France, Germany, Japan, Italy, Netherlands, Sweden and Switzerland. The papers give an overview of the current state-of-the-art analytical approaches, methods and simulation tools for the modelling and analysis of network timetables, the distribution of train delays and real-time rescheduling of perturbed operations. The topics include e.g. railway capacity estimation according to the UIC norm 406, train punctuality analysis based on standard track occupation and clearance data, and boarding, alighting and distribution of passengers along suburban trains, as well as fast recognition and resolution of conflicts between train movements in case of disturbances by means of real-time speed adaptation, re-ordering or re-routing. The book can serve as an introduction to the theory of railway traffic, timetable design, operations analysis, simulation, safety and control for Master and PhD students from engineering faculties and professionals working in the railway industry.
Author: Network Rail
Publisher: The Stationery Office
ISBN: 9780117069657
Category : Business & Economics
Languages : en
Pages : 3268
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Book Description
Published by TSO with permission from Network Rail (owners of Britain's national railway and stations) the GB Rail Timetable Summer Edition 2011 holds details on passenger services operated by the Train Companies, who work together closely to provide a co-ordinated rail network offering a range of travel opportunities. Details and identification codes are shown within the Train Operator pages of this book. The GB Rail Timetable contains rail services operated over the GB rail network, together with rail and shipping connections with Ireland, the Isle of Man, the Isle of Wight and the Channel Islands. The GB Rail Timetable also includes the Eurostar summer timetable, valid until 10 Decmeber 2011. Network Rail operate 18 major stations but the remainder are operated on their behalf by the Train Operating Companies. Details are shown in the station index.
Author: United States. Federal Railroad Administration
Publisher:
ISBN:
Category : Railroads and state
Languages : en
Pages : 762
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Book Description
