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Author: Ingo A. Hansen Publisher: WIT Press ISBN: 1845645006 Category : Transportation Languages : en Pages : 225
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: Ingo A. Hansen Publisher: WIT Press ISBN: 1845645006 Category : Transportation Languages : en Pages : 225
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: C. A. Brebbia Publisher: WIT Press ISBN: 1784662437 Category : Transportation Languages : en Pages : 317
Book Description
The papers presented in this volume aim to update the use of advanced systems, promoting their general awareness throughout the management, design, manufacture and operation of railways and other emerging passenger, freight and transit systems. The book particularly emphasizes the use of computer systems in advanced railway engineering.Topics covered include: Communications and signalling; Operations quality; Energy supply and consumption; Monitoring and maintenance; Computer simulations Planning and policy; Operational planning; Safety and security; Rescheduling; Timetable planning.
Author: Rabii Zahir Publisher: Linköping University Electronic Press ISBN: 9180757952 Category : Languages : en Pages : 58
Book Description
Train dispatchers play a vital role for safe and efficient railway operations. Their role includes several tasks, such as controlling train movements, maneuvering railway infrastructures (e.g., switches and signals), communicating with train crew and maintenance contractors. Dispatching centers operate around the clock, resulting in a high risk of fatigue for dispatchers, especially during night shifts. Moreover, dispatchers’ cognitive performance deteriorates when workload levels are too high. Although workload is a subjective measure, it is correlated with task load, i.e., the number of tasks executed in a given period of time. A preventive approach against too high workload levels is to account for the task load already during the scheduling phase. Currently, shifts are scheduled manually, which is a very complex task that cannot guarantee a satisfying quality both in terms of high efficiency and balanced workload levels. The aim of this thesis is to create a scheduling framework, based on mathematical optimization models, that supports shift planners in their work. The framework helps in automatizing the scheduling process and improves the quality of the resulting shifts. Our initial approach is to use our models to figure out the required staffing levels and produce baseline schedules, and then improve these by increasing their attractiveness. To achieve this goal, we conduct three related studies considering the case of Malm¨o dispatching center. The studies result in different optimization models for shift scheduling of train dispatchers. We present the complete results in the following three papers: In the first paper, we build an optimization model for one-day shift scheduling, where the objective function is to minimize the number of needed dispatchers. Moreover, we analyze the impact on the computation time of different parameters, such as the number of geographical areas and how these are combined. The results of the experiments are obtained within acceptable run times for real-world size instances. In the second paper, we suggest a stronger formulation of the previous model; in addition, we focus on improving the quality of the shifts. The improvements consider avoiding undesirable start times (between 00 and 05 am) and too short shifts (shorter than 6h). Our major contribution in this paper is giving four approaches for defining and modeling area-dispatcher-assignment switches, called handovers, which occur when a dispatcher changes the assigned controlled areas during a shift. Two of these approaches gave promising results for solving real-world size instances to optimality within acceptable run times. In the third paper, we increase the time horizon from one day to a week. We do this by combining the resulting shifts from some instances in the second paper where we consider a list of legal constraints, such as resting time between shifts, weekly rest and the total weekly working hours. In addition, we analyze the impact of the variability in shift lengths on the quality of the weekly schedules.
Author: Ravindra K. Ahuja Publisher: Springer Science & Business Media ISBN: 3642054641 Category : Computers Languages : en Pages : 439
Book Description
Scheduled transportation networks give rise to very complex and large-scale networkoptimization problems requiring innovative solution techniques and ideas from mathematical optimization and theoretical computer science. Examples of scheduled transportation include bus, ferry, airline, and railway networks, with the latter being a prime application domain that provides a fair amount of the most complex and largest instances of such optimization problems. Scheduled transport optimization deals with planning and scheduling problems over several time horizons, and substantial progress has been made for strategic planning and scheduling problems in all transportation domains. This state-of-the-art survey presents the outcome of an open call for contributions asking for either research papers or state-of-the-art survey articles. We received 24 submissions that underwent two rounds of the standard peer-review process, out of which 18 were finally accepted for publication. The volume is organized in four parts: Robustness and Recoverability, Robust Timetabling and Route Planning, Robust Planning Under Scarce Resources, and Online Planning: Delay and Disruption Management.
Author: C. A. Brebbia Publisher: WIT Press ISBN: 1845646169 Category : Transportation Languages : en Pages : 781
Book Description
Containing the proceedings of the Thirteenth International Conference on Design and Operation in Railway Engineering, this book presents the latest developments in the use of computer-based techniques in the design and operation of railways. The COMPRAIL conference series serves as the forum for major advances in this important field. The book covers such topics as Advanced Train Control; Planning; Timetable Planning; Rescheduling; Risk Management; Safety and Security; Maglev and High-speed Railways; Traffic Control and Safety of High-speed Railways; Metro and Other Transit Systems; Communications and Signalling; Energy Supply and Consumption; Driverless and Automatic Train Operation; Operations Quality; Computer Techniques and Simulations; Railway Vehicle Dynamics; Dynamics and Wheel/Rail Interface; Monitoring and Maintenance; Crack, Damage and Fatigue Problems.The book will be of interest to railway managers, consultants, railway engineers (including signal and control engineers), designers of advanced train control systems and computer specialists
Author: Alberto Marchetti-Spaccamela Publisher: Springer Science & Business Media ISBN: 3642197531 Category : Computers Languages : en Pages : 273
Book Description
This book constitutes the refereed proceedings of the First International ICST Conference on Theory and Practice of Algorithms in (Computer) Systems, TAPAS 2011, held in Rome, Italy, in April 2011. The 25 papers presented, including three short papers by invited speakers, were carefully reviewed and selected from 45 submissions. The papers all feature original research in the design, implementation and evaluation of algorithms with special focus on algorithms for combinatorial optimization problems, and to real-world applications, engineering and experimental analysis of algorithms - thus fostering the cooperation among researchers in computer science, networking, discrete mathematics, mathematical programming and operations research.
Author: Bin Ning Publisher: WIT Press ISBN: 1845644689 Category : Transportation Languages : en Pages : 1025
Book Description
These conference proceedings update 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 transport systems.
Author: G. M. Carlomagno Publisher: WIT Press ISBN: 1845645405 Category : Mathematics Languages : en Pages : 737
Book Description
Containing edited versions of most of the papers presented at the Fifteenth International Conference on Computational Methods and Experimental Measurements, this book reviews the latest work on these two approaches, and the interaction between them.
Author: Silvia Schwarze Publisher: Springer Science & Business Media ISBN: 0387779280 Category : Business & Economics Languages : en Pages : 179
Book Description
A path player game is a new innovative type of game which considers network flow problems from the viewpoint of network owners. This strategy enables modeling real-world problems and has many practical applications. Key features: * Presents a rigorous exposition of the theoretical foundations of the concept of a path player game; * Suggests 18 practical open problems for future research in such areas as traffic planning, computation of equilibria, and optimization; * Examines potentials for games on polyhedra as well as integer versions of generalized Nash equilibria. Written clearly, with well-presented mathematics, this book is intended for graduate students, mathematicians, engineers, and computer scientists.
Author: NAOKI KATOH Publisher: Springer Science & Business Media ISBN: 3642190936 Category : Computers Languages : en Pages : 243
Book Description
This book constitutes the proceedings of the 5th International Workshop on Algorithms and Computation, WALCOM 2011, held in New Delhi, India, in February 2011. The 20 papers presented in this volume were carefully reviewed and selected from 57 submissions. The papers are grouped in topical sections on approximation algorithms, hardness, algorithm engineering, computational geometry, string algorithms, and graph algorithms.
Author: Ingo A. Hansen
Author: Ingo A. Hansen
Author: C. A. Brebbia
Author: Rabii Zahir
Author: Ravindra K. Ahuja
Author: C. A. Brebbia
Author: Alberto Marchetti-Spaccamela
Author: Bin Ning
Author: G. M. Carlomagno
Author: Silvia Schwarze
Author: NAOKI KATOH