关于举行香港大学教授讲座的通知

发布时间： 2012-05-21

时间：2012年5月24日（周四）上午9：00 -11：00

地点：交通大楼604会议室

题目：A continuum modeling approach to transportation system in an urban city

主讲人：Prof. S.C. Wong, Department of Civil Engineering, The University of Hong Kong

题目：A Hybrid Artificial Bee Colony Algorithm for Transit Network Design

主讲人：Dr. W.Y. Szeto,Department of Civil Engineering, The University of Hong Kong

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土木与交通学院

2012年5月21日

讲座内容：

A continuum modeling approach to transportation system in an urban city

S.C. Wong

Department of Civil Engineering, The University of Hong Kong, Pokfulam Road,

Hong Kong, E-mail: hhecwsc@hku.hk

Abstract

Consider a city with several facilities competing for multi-class users that are distributed continuously over space. Within the city region, the road network is relatively dense and is considered as a continuum. A user equilibrium condition results when users freely make their choice of facilities and their optimal routes within this continuum based on the criterion of minimizing the individual total facility and travel cost. A demand distribution function is specified to model the probabilistic choice behavior of destinations for the multi-class users. Furthermore, facility externality is introduced to capture the effect of congestion and economies of scale, as the usage of the facility varies. Mathematical programs are formulated for the above complex problems, and finite element solution algorithms are developed. Finally, some example applications, such as airport competition, cordon-based congestion charging, and housing problems, will be given to demonstrate the usefulness of the methodology.

主讲人简介：

S.C. Wong is currently Chair Professor and Head of Department of Civil Engineering, and Director of Institute of Transport Studies at the University of Hong Kong. He received his B.Sc.(Eng.) and M.Phil. degrees in Civil and Structural Engineering from the University of Hong Kong, and with the award of a Croucher Foundation Scholarship obtained his Ph.D. degree in Transport Studies from University College London. He received an Outstanding Researcher Award from the University of Hong Kong in 2009, and several best paper awards from international journals and conferences. His research interests include the optimization of traffic-signal settings, continuum modeling for traffic equilibrium problems, traffic flow theory, traffic management and control, transportation planning and network modeling, and road safety. He is currently the Editor-in-Chief of Transportmetrica and International Journal of Sustainable Transportation, and editorial board member of over ten other international journals, such as Transportation Research Part B, IEEE Transactions on Intelligent Transportation Systems, etc. Locally, he is currently a Justice of the Peace, a member of Town Planning Board and Road Safety Council of the HKSAR Government. In 2003, he served as a member of the Tuen Mun Road Traffic Incident Independent Expert Panel, appointed by the Chief Executive of the HKSAR Government, and from 2004-2010 he was a member of the Transport Advisory Committee of the HKSAR Government.

讲座内容：

A Hybrid Artificial Bee Colony Algorithm for Transit Network Design

W.Y. Szeto

Department of Civil Engineering
The University of Hong Kong, Pokfulam Road, Hong Kong

Email: ceszeto@hku.hk

Abstract:

This paper proposes a Hybrid Enhanced Artificial Bee Colony algorithm (HEABC) to solve the bus network design problem, which aims to reduce the weighted sum of the number of transfers and the total travel time of the users by restructuring bus routes and determining new frequencies without increasing fleet sizes. HEABC mainly relies on the Enhanced Artificial Bee Colony algorithm to determine the route structure while the frequency is determined by the frequency setting heuristic during the fitness evaluation. To illustrate its performance, HEABC is compared with a hybrid generic algorithm (HGA) and a variant of HEABC. The results indicate that HEABC can produce better solutions than the other two algorithms. Moreover, HEABC can produce a design that can be better than the existing design in terms of the maximum number of intermediate stops, total travel time, the number of transfers, maximum headway, and total fuel cost. The design should be acceptable from the perspectives of the public and bus operator.

讲座人简介

Dr Wai Yuen Szeto is Assistant Professor at the Department of Civil Engineering at The University of Hong Kong. He obtained his PhD at The Hong Kong University of Science and Technology in 2003. He was Lecturer in Transportation Engineering at the Department of Civil, Structural and Environmental Engineering at Trinity College Dublin from 2004 to 2007. He then worked as Assistant Professor at the Department of Civil Engineering at The University of Singapore for 2.5 years, and joined The University of Hong Kong in late 2009.

Dr Szeto is authors of over 100 referred journal and conference papers. The papers are related to dynamic traffic assignment, transport network design, public transport, network reliability, game theoretic approaches to transport and logistic problems, modeling land use, transport and environment interaction, and city logistics. He has been received the World Conference on Transport Research Prize, the Eastern Asia Society for Transportation Studies Outstanding Paper Award, the Hong Kong Institute of Engineers Outstanding Paper Award for Young Engineers/Researchers, the Hong Kong Society for Transportation Studies Outstanding Dissertation Paper Award and the Gordon Newell Memorial Prize.

Currently, he is Editor of Central European Journal of Engineering, Guest Editors of Journal of King Saud University-Science, International Journal of Sustainable Transportation and Journal of Intelligent Transportation Systems, Editor of the proceedings of the 16^th HKSTS conference, Associate Editor of the proceedings of 13th and 14th International IEEE Annual Conference on Intelligent Transportation Systems 2010, and Editorial Board Members of Asian Transport Studies and International Journal of Traffic and Transportation Engineering.