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Events Calendar

EVENTS IN November 2017

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Thursday, November 2, 2017

4:00 PM - 5:15 PM

NUTC Seminar: "Agent-Based Activity/Travel Microsimulation: What's Next?" - Eric Miller, University of Toronto

Northwestern University Transportation Center presents:

"Agent-Based Activity/Travel Microsimulation: What's Next?"

Eric Miller
Professor, Department of Civil Engineering - Director, University of Toronto Transportation Research Institute (UTTRI), University of Toronto

 

ABSTRACT:

Activity/tour-based models of urban travel demand are increasingly be used in operational planning practice. These are generally implemented within a microsimulation framework, in which out-of-home activity participation and the associated travel are modelled for individual trip-makers (agents). These operational model systems are the product of over 40 years of research and development, dating back at least to calls in the 1970's for an activity-based approach to modelling travel demand. They are also built upon the tremendous advances that have been made over this same time period in disaggregate, random utility modelling, computer hardware and software, and GIS-based spatial-temporal datasets, among other factors.

The rapidly growing availability of “big data” concerning travel behaviour from a variety of sources, continuing growth in computing capabilities, and ever-changing (and increasingly challenging) policy analysis issues (autonomous vehicles, new services such as car/bike sharing, increasing emphasis on active transportation, etc.) create both the opportunity and the need to continue to develop more advanced, robust travel demand modelling methods to help guide the continuing explosive growth of urban regions in Asia and worldwide along more sustainable paths.

Agent-based microsimulation (ABM) provides an extremely flexible, powerful and efficient means for modelling complex spatial-temporal, socio-economic behaviour such as travel. The current operational models represent a sound “first generation” of such methods, but they are far from realizing the full potential of the ABM concept. After first briefly characterizing the ABM approach and the current state of art/practice, this presentation explores a number of needs and opportunities for future evolution of ABM activity/travel modelling.

Topics discussed will include:
• Dynamics (memory, inertia, state dependencies, adaptation, etc.).
• Heterogeneity.
• Inter-agent interactions (within household and between households).
• Mode and route choice modelling (transit, active transportation, new modes).
• Activity episode utility (why do we travel?).
• Issues in modelling spatial choice (activity episode locations).
• Modelling intercity (long-distance) travel.

 

SPEAKER BIO:

Professor Eric J. Miller has BASc and MASc degrees from the University of Toronto and a PhD from the Massachusetts Institute of Technology. He been a faculty member in the Department of Civil Engineering, University of Toronto since 1983, where he is currently Director of the University of Toronto Transportation Research Institute. He served as Acting Chair of the Department of Civil Engineering during 1998-99, 2003 and 2007 and was the inaugural Director of the University of Toronto Cities Centre (2008-2012). He is also Director of the University's Data Management Group, which is responsible for the largest travel survey data collection and management program in Canada, and the Travel Modelling Group, which works closely with transportation agencies in the Toronto region in improving the operational state of travel demand modelling practice in the region. He is past-Chair of the U.S. Transportation Research Board (TRB) Committee on Travel Behavior and Values, the International Association for Travel Behaviour Research and the TRB Sub-Committee on Integrated Transportation – Land Use Modeling. He is a Member Emeritus of the TRB Transportation Demand Forecasting Committee. He served on the TRB Task Force on Moving Activity-Based Approaches to Practice and the US National Academy of Sciences Committee for Determination of the State of the Practice in Metropolitan Area Travel Forecasting. He has chaired or been a member of numerous intercity travel demand modelling peer review panels throughout North America, including current membership on the California High-Speed Rail Authority's Ridership Technical Advisory Panel. Professor Miller is the recipient of the 2009 Wilbur S. Smith Distinguished Educator Award from the Institute of Transportation Engineers and the inaugural winner of the University of British Columbia Margolese National Design for Living Award (2012). Professor Miller is the developer of GTAModel, a state-of-the-art activity-based microsimulation regional travel demand modeling system used by the Cities of Toronto and Mississauga to forecast travel demand in the Greater Toronto-Hamilton Area (GTHA) and ILUTE, an integrated land use – travel demand model system for the GTHA. His international experience includes transit planning in Cairo, travel demand model development in Mumbai and Hyderabad, and currently he is working on urban mobility solutions for Latin American cities in Paraguay and Uruguay. He is co-author of the textbook Urban Transportation Planning: A Decision-Oriented Approach, the third edition of which was recently released in e-book format.

Contact Info: Diana Marek

Location: Chambers Hall 600 Foster St Lower Level Evanston IL 60208

Event URL: http://www.transportation.northwestern.edu/

Tuesday, November 7, 2017

11:00 AM - 12:30 PM

IEMS Seminar: Decision Support for Attended Home Deliveries in Urban Areas

Ann Campbell, Ph.D.University of Iowa

Abstract: In this talk, I will discuss the challenges associated with home delivery problems and review some of the major research directions. I will specifically discuss two examples of my work. First, I will discuss the problem of what delivery options to offer customers in next day delivery, which was inspired by work with grocery delivery providers. Second, I will discuss a same day delivery problem inspired by delivery practices such as Amazon's Prime Now. I will
conclude with a discussion of open research problems in this field.

Biography: Ann Melissa Campbell is a Henry B. Tippie Research Professor in Management Sciences at the Henry B. Tippie College of Business at the University of Iowa. She joined the University of Iowa after receiving her Ph.D. from the School of Industrial and Systems Engineering at the Georgia Institute of Technology. Her research focuses on freight transportation, especially on problems related to new and emerging business models. She works on problems related to inventory routing, consumer direct delivery, route planning using stochastic information, and logistics planning for disaster relief. She publishes in journals such as Transportation Science and Networks. She is a recipient of the NSF CAREER Award and serves as an Associate Editor for Transportation Science.

Contact Info: Agnes Kaminski

Location: Technological Institute 2145 Sheridan Road M288 Evanston IL 60208

Thursday, November 9, 2017

4:00 PM - 5:15 PM

NUTC Seminar: "Models and Approaches to Multi-Objective Arc Tour Problems with an Application to Marathon Course Design" - Mehmet Basdere, Northwestern University

Northwestern University Transportation Center presents:

"Models and Approaches to Multi-Objective Arc Tour Problems with an Application to Marathon Course Design"

Mehmet Basdere
PhD Candidate, Industrial Engineering &; Management Sciences
Northwestern University


ABSTRACT:
Motivated by marathon course design, our study introduces a novel tour finding problem, the Lock-Free Arc Tour Problem (LFATP), which ensures that the resulting tour does not block access to certain critical vertices. The LFATP is formulated as a mixed integer linear program. Structurally, the LFATP yields excessive subtour formation, causing the standard branch-and-cut approach to perform poorly even with valid inequalities derived from locking properties of the LFATP. For this reason, we introduce path-based reformulations arising from a provably stronger disjunctive program, where disjunctions are obtained by fixing the visit orders in which must-visit edges are visited. In computational tests, the reformulations are shown to yield up to 100 times improvement in solution times. Additional tests demonstrate the benefits of using lock elimination inequalities and the value of reformulations for more general tour finding problems with visit requirements and length restrictions. To solve LFATP in a multi-objective environment, we develop a new Interactive Weight Region-Based Approach (IWRA) that iteratively reaches a most preferred solution of the corresponding linear or integer program after exploring a few nondominated solutions. Practical insights from the Bank of America Chicago Marathon are presented along with extensions of reformulations for various types of objective functions.

 
SPEAKER BIO:
Mehmet Basdere is a Ph.D. student in the Department of Industrial Engineering and Management Sciences at Northwestern University. He received his bachelor's and master's degree in industrial engineering from Bogazici University, Turkey. His research interests include continuous and discrete optimization, multi-objective decision making and disjunctive programming with applications to logistics, routing, scheduling and wireless sensor network problems. During his PhD studies, Mehmet received Arthur P. Hurter Award, awarded to the most successful first-year graduate students at Northwestern University IEMS Department, Nemhauser Best Student Paper Award, awarded to the most successful graduate student paper at Northwestern University IEMS Department, and Dissertation Year Fellowship, awarded by Northwestern University Transportation Center to fund the most successful dissertation projects.

Contact Info: Diana Marek

Location: Chambers Hall 600 Foster St Lower Level Evanston IL 60208

Event URL: http://www.transportation.northwestern.edu/

Tuesday, November 14, 2017

11:00 AM - 12:15 PM

NUTC Seminar: "Digitalization of Transport Management—a voyage not a destination" - Gunnar Stefansson, Chalmers University

Northwestern University Transportation Center presents:

"Digitalization of Transport Management—a voyage not a destination"

Gunnar Stefansson
Professor of logistics and transport management,
Chalmers University of Technology, Gothenburg, Sweden,
and University of Iceland, Reykjavik, Iceland

Abstract:
Digitalization of business processes have in recent years been revolutionizing various industries aiming at making services more effective, efficient and customer centric. Industrial examples, including service and retail industries, are numerous but unfortunately bringing about very few such from the transport industry. This may sound somewhat contradictory, given the fact that transportation and distribution is a major enabler of efficient business transactions, providing the business industry with the customer value crucial for sustainable future operations.


The seminar will focus on the voyage toward a connected transport industry, where issues linked to the facilitation of information exchange between various industrial partners and the transportation industry, that is at this point of time still stumbling, a situation completely unacceptable in today's era of easy access and exchange of data and information. The envision of providing a digital ecosystem for the transport industry in order to support more efficient collaboration within logistics supply chains will be presented. The digital ecosystem is not only capable of enabling and facilitates information exchange in more effective and efficient way, but is aimed at providing the transport industry with means to take the leap towards the digital arena that the customers command and at the same time a sustainable business operation entails today.

Bio
Dr. Gunnar Stefansson completed his engineering degree at University of Iceland and later earned his PhD at Chalmers University of Technology, Gothenburg, Sweden: His work is on the topic of collaborative logistics management and the use of information technology to support logistics activities with main focus on transport management and third parties' logistics service providers. The work was to great extend carried out in the US with support from many of the NUTC's faculty. To this day, Gunnar divides his time between the two universities, University of Iceland and Chalmers University of Technology, working on transport and logistics management and the digitalization of the transport industry.

In recent years the research focus has been on collaboration issues within supply chains, tracking and tracing, development of smart transport management frameworks, resource utilization and digitalization of transport management for increased efficiency in the industry. The underlying research has its base in many Icelandic, Swedish as well as European Union financed projects in recent years. Publications of the research has been included in journals such as International Journal of Production Economics, Journal of Business Logistics, International Journal of Physical Distribution &; Logistics Management, International Journal of Logistics Systems and Management, International Journal of Productivity and Quality Management, World Review of Intermodal Transportation Research, Research in transportation Economics, International Journal of Productivity and Performance Management, among others.

 

Contact Info: Diana Marek

Location: Chambers Hall 600 Foster St Lower Level Evanston IL 60208

Event URL: http://www.transportation.northwestern.edu/

Thursday, November 16, 2017

4:00 PM - 5:15 PM

NUTC Seminar: "A Universal Methodology for Learning Cascading Failure Dynamics in Interdependent Networks" - Cynthia Chen, University of Washington-Seattle

Northwestern University Transportation Center presents:

"A Universal Methodology for Learning Cascading Failure Dynamics in Interdependent Networks"

Cynthia Chen
Professsor, Civil &; Environmental Engineering, University of Washington-Seattle
Director, THINK (Transportation-Human Interaction-and-Network Knowledge) Lab


ABSTRACT:
A modeling framework to infer the cascading failure process that leads to the observed cascading failure outcomes is proposed and tested in simulation-based case studies. With only the failure time of each node given, the proposed methodology demonstrates the capability of learning the underlying failure propagation mechanisms, and reconstructing the cascading failure process in both case studies. Considering the diverse failure propagation mechanisms involved in the two cascading failure instances, the proposed methodology presents a potential channel to modeling, understanding and controlling cascading failures in a variety of networks.


Cascading failures are a universal phenomenon in all types of networks, but methodologies devised to learn their dynamics so far are mostly domain-constrained and demonstrate limited universal applicability. This paper tackles this issue from a reverse perspective of how cascading failures happen: it takes cascading failure outcomes as inputs and seeks to infer the failure propagation process that gives rise to the outcomes, instead of the reserve way as the prevalent approaches do. Since cascading failure outcomes are commonly observed and share similarities among different systems, we envision that this approach presents universal applicability to different systems, and will potentially unify cascading failure research across disciplines.

 
SPEAKER BIO:

Cynthia Chen is a professor in the department of civil and environmental engineering at the University of Washington, Seattle (UW). At UW, she directs the THINK (Transportation-Human Interaction-and- Network Knowledge) lab (http://depts.washington.edu/thinklab) where she and her students study the sustainability and resilience of a city through the lens of human beings' interacting with the physical infrastructures and the built environment. The work of THINK lab is highly interdisciplinary, drawing on the latest methods and ideas in disciplines from social and natural sciences to engineering. Dr. Chen graduated from University of California, Davis with a PhD in civil and environmental engineering in 2001 and prior to joining UW, she had taught at City College of New York as an assistant professor from 2003 to 2009. Dr. Chen has served on a variety of TRB (Transportation Research Board) committees including for example, Travel Behavior and Values and Travel Survey committees. She has published over 50 peer-reviewed articles (https://scholar.google.com/citations?user=dtaR0JYAAAAJ) and her work has been supported by many federal and local agencies. She is an associate director of the USDOT-supported TOMNET (Teaching Old Models New Tricks) center (http://www.tomnet-utc.org/) and an associate editor for Transportation (https://link.springer.com/journal/11116). Since December 2016, Dr. Chen has also been serving as the program director leading the Civil Infrastructure Systems (CIS) program (https://www.nsf.gov/funding/pgm_summ.jsp?pims_id=13352&;org=ENG&;from=home) for the National Science Foundation.

 

 

Contact Info: Diana Marek

Location: Chambers Hall 600 Foster St Lower Level Evanston IL 60208

Event URL: http://www.transportation.northwestern.edu/