Optimization of Schedules with Heterogeneous Train Structure in Plan-ning of Railway Lines PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Optimization of Schedules with Heterogeneous Train Structure in Plan-ning of Railway Lines PDF full book. Access full book title Optimization of Schedules with Heterogeneous Train Structure in Plan-ning of Railway Lines by Hyoung June Kim. Download full books in PDF and EPUB format.
Author: Hyoung June Kim
Publisher: BoD – Books on Demand
ISBN: 3749485062
Category : Technology & Engineering
Languages : en
Pages : 146
Get Book Here
Book Description
One of the most important things to consider before constructing a railway is the train operating program. However, the analysis of the operating program based train schedule in the railway planning stage is carried out mainly on the basis of the intuitive experiences of the planner, and the optimization of the train schedule under various conditions is not properly considered. This study analyzes the optimization of heterogeneous train scheduling structures with minimizing the weighted scheduled waiting time and with the decision of Subsidiary Main Track (SMT) for overtaking of high-speed trains on the railway line. As a way for analyzing the Optimal Train Schedule (OTS) under constraint conditions, the genetic algorithm is used. The genetic algorithm is widely applied to various optimization and decision-making problems in engineering, natural sciences, business administration, and social sciences. The proposed method can examine train schedules for more scenarios, apply quantitative evaluation criteria, and review concrete infrastructures in comparison to the existing empirical method used in South Korea.
Author: Cormac McCarthy
Publisher: Pan Macmillan
ISBN: 0330535757
Category : Drama
Languages : en
Pages : 114
Get Book Here
Book Description
Deft, spare, and full of artful tension, The Sunset Limited is a beautifully crafted play from the legendary Cormac McCarthy, author of No Country for Old Men and Blood Meridian. 'The Sunset Limited grips from the very first page' – Financial Times A startling encounter on a New York subway platform leads two strangers to a run-down tenement where a life or death decision must be made. In that small apartment the two men, known as 'Black' and 'White', begin a conversatino that leads each back through his own history. White is a professor whose seemingly enviable existence of relative ease has left him nonetheless in despair. Black, an ex-con in recovery for drug addiction, is the more hopeful of the men. He is, however, desperate to convince White of the power of faith – while White is desperate to deny it. Between them, they hope to discover the meaning of life itself. Praise for Cormac McCarthy: ‘McCarthy worked close to some religious impulse, his books were terrifying and absolute’ – Anne Enright, author of The Green Road and The Wren, The Wren 'His prose takes on an almost biblical quality, hallucinatory in its effect and evangelical in its power' – Stephen King, author of The Shining and the Dark Tower series '[I]n presenting the darker human impulses in his rich prose, [McCarthy] showed readers the necessity of facing up to existence' – Annie Proulx, author of Brokeback Mountain
Author: Yihui Wang
Publisher: Springer
ISBN: 3319308890
Category : Technology & Engineering
Languages : en
Pages : 198
Get Book Here
Book Description
This book contributes to making urban rail transport fast, punctual and energy-efficient –significant factors in the importance of public transportation systems to economic, environmental and social requirements at both municipal and national levels. It proposes new methods for shortening passenger travel times and for reducing energy consumption, addressing two major topics: (1) train trajectory planning: the authors derive a nonlinear model for the operation of trains and present several approaches for calculating optimal and energy-efficient trajectories within a given schedule; and (2) train scheduling: the authors develop a train scheduling model for urban rail systems and optimization approaches with which to balance total passenger travel time with energy efficiency and other costs to the operator. Mixed-integer linear programming and pseudospectral methods are among the new methods proposed for single- and multi-train systems for the solution of the nonlinear trajectory planning problem which involves constraints such as varying speed restrictions and maximum traction/braking force. Signaling systems and their effects are also accounted for in the trajectory planning model. Origin–destination passenger demand is included in the model formulation for train scheduling. Iterative convex programming and efficient bi-level approaches are utilized in the solution of the train-scheduling problem. In addition, the splitting rates and route choices of passengers are also optimized from the system point of view. The problems and solutions described in Optimal Trajectory Planning and Train Scheduling for Urban Rail Transit Systems will interest researchers studying public transport systems and logistics whether from an academic or practitioner background as well as providing a real application for anybody studying optimization theory and predictive control.
Author: Hyoung June Kim
Publisher: BoD – Books on Demand
ISBN: 3749485062
Category : Technology & Engineering
Languages : en
Pages : 146
Get Book Here
Book Description
One of the most important things to consider before constructing a railway is the train operating program. However, the analysis of the operating program based train schedule in the railway planning stage is carried out mainly on the basis of the intuitive experiences of the planner, and the optimization of the train schedule under various conditions is not properly considered. This study analyzes the optimization of heterogeneous train scheduling structures with minimizing the weighted scheduled waiting time and with the decision of Subsidiary Main Track (SMT) for overtaking of high-speed trains on the railway line. As a way for analyzing the Optimal Train Schedule (OTS) under constraint conditions, the genetic algorithm is used. The genetic algorithm is widely applied to various optimization and decision-making problems in engineering, natural sciences, business administration, and social sciences. The proposed method can examine train schedules for more scenarios, apply quantitative evaluation criteria, and review concrete infrastructures in comparison to the existing empirical method used in South Korea.
Author: Willi Jäger
Publisher: Springer Science & Business Media
ISBN: 3642557538
Category : Computers
Languages : en
Pages : 733
Get Book Here
Book Description
Efficient transfer between science and society is crucial for their future development. The rapid progress of information technology and computer systems offers a large potential and new perspectives for solving complex problems. Mathematical modelling and simulation have become important tools not only in scientific investigations but also in analysing, planning and controlling technological and economic processes. Mathematics, imbedded in an interdisciplinary concept, has become a key technology. The book covers the results of a variety of major projects in industrial mathematics following an initiative of the German Federal Ministry of Education and Research. All projects are collaborations of industrial companies and university-based researchers, and range from automotive industry to computer technology and medical visualisation. In general, the projects presented in this volume prove that new mathematical ideas and methods can be decisive for the solution of industrial and economic problems.
Author: John J. Allan
Publisher: WIT Press
ISBN: 1845641779
Category : Technology & Engineering
Languages : en
Pages : 1009
Get Book Here
Book Description
This book updates the use of computer-based techniques, promoting their general awareness throughout the business management, design, manufacture and operation of railways and other advanced passenger, freight and transit systems. Including papers from the Tenth International Conference on Computer System Design and Operation in the Railway and Other Transit Systems, the book will be of interest to railway management, consultants, railway engineers (including signal and control engineers), designers of advanced train control systems and computer specialists. Themes of interest include: Planning; Human Factors; Computer Techniques, Management and languages; Decision Support Systems; Systems Engineering; Electromagnetic Compatibility and Lightning; Reliability, Availability, Maintainability and Safety (RAMS); Freight; Advanced Train Control; Train Location; CCTV/Communications; Operations Quality; Timetables; Traffic Control; Global Navigation using Satellite Systems; Online Scheduling and Dispatching; Dynamics and Wheel/Rail Interface; Power Supply; Traction and Maglev; Obstacle Detection and Collision Analysis; Railway Security.
Author: Fahimeh Khoshniyat
Publisher: Linköping University Electronic Press
ISBN: 9176856313
Category :
Languages : en
Pages : 60
Get Book Here
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: Railroad Commission of Wisconsin
Publisher:
ISBN:
Category : Railroad law
Languages : en
Pages : 920
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Railroads
Languages : en
Pages : 1054
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Locomotives
Languages : en
Pages : 1190
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Railroads
Languages : en
Pages : 1226
Get Book Here
Book Description
