Optimization of Schedules with Heterogeneous Train Structure in Plan-ning of Railway Lines

Optimization of Schedules with Heterogeneous Train Structure in Plan-ning of Railway Lines
Author: Hyoung June Kim
Publisher: BoD – Books on Demand
Total Pages: 146
Release: 2020-06-23
Genre: Technology & Engineering
ISBN: 3749485062

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.

Optimal Trajectory Planning and Train Scheduling for Urban Rail Transit Systems

Optimal Trajectory Planning and Train Scheduling for Urban Rail Transit Systems
Author: Yihui Wang
Publisher: Springer
Total Pages: 198
Release: 2016-04-21
Genre: Technology & Engineering
ISBN: 3319308890

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.

The Sunset Limited

The Sunset Limited
Author: Cormac McCarthy
Publisher: Pan Macmillan
Total Pages: 114
Release: 2011-02-04
Genre: Drama
ISBN: 0330535757

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

Mathematics - Key Technology for the Future

Mathematics - Key Technology for the Future
Author: Willi Jäger
Publisher: Springer Science & Business Media
Total Pages: 733
Release: 2011-06-28
Genre: Computers
ISBN: 3642557538

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.

Hearings

Hearings
Author: United States. Congress. Senate
Publisher:
Total Pages:
Release: 1959
Genre:
ISBN:

Computers in Railways XIV

Computers in Railways XIV
Author: C. A. Brebbia
Publisher: WIT Press
Total Pages: 941
Release: 2014-06-24
Genre: Transportation
ISBN: 1845647661

This book contains the 14th proceedings of the, very successful, International conference on Railway Engineering Design and Optimization (COMPRAIL 2014), which began in 1987. Encouraging the update and use of advanced systems, the book promotes their general awareness throughout the business management, design, manufacture and operation of railways and other emerging passenger, freight and transit systems. It particularly emphasises the use of computer systems in advanced railway engineering. Topics covered include: Timetable planning; Computer techniques and simulations; Actual train control; Operations quality; Risk management; Planning; Monitoring and maintenance; Energy supply and consumption; Communications and signalling; Rescheduling; Safety and security; Railway vehicle dynamics; Driverless and automatic train operation.

Passenger Train Service

Passenger Train Service
Author: United States. Congress. House. Committee on Interstate and Foreign Commerce
Publisher:
Total Pages: 626
Release: 1960
Genre: Ferries
ISBN:

Considers H.R. 5596 and 28 related bills, to amend the Interstate Commerce Act to require formal ICC hearing for each railroad and ferry boat passenger line earmarked for abandonment where more than one state is involved.

Behavioral Operations in Planning and Scheduling

Behavioral Operations in Planning and Scheduling
Author: Jan C. Fransoo
Publisher: Springer Science & Business Media
Total Pages: 482
Release: 2010-09-22
Genre: Business & Economics
ISBN: 3642133827

Human and organizational factors have a substantial impact on the performance of planning and scheduling processes. Despite widespread and advanced decision support systems, human decision makers are still crucial to improve the operational performance in manufacturing industries. In this text, the state of the art in this area is discussed by experts from a wide variety of engineering and social science disciplines. Moreover, recent results from collaborative studies and a number of field cases are presented. The text is targeted at researchers and graduate students, but is also particularly useful for managers, consultants, and system developers to better understand how human performance can be advanced.