Salt Lake City Meeting
||The Spring 2000 INFORMS National Meeting was held in Salt
Lake City, Utah, May 7-10, 2000. For more information, contact Bengt
Mutén, Reebie Associates, the
cluster chair, at 203-705-0455, or by e-mail at email@example.com
Click here for
information about the full INFORMS conference.
RASIG Roundtable - E-business & Railroads - Sunday May 7 1:00 - 5:00
pm - Blue Spruce Room - Wyndham Hotel
Coordinators, Ajith Wijeratne, Norfolk
404-529-1522, and Pooja Dewan, Burlington
Northern Santa Fe, Pooja.Dewan@bnsf.com,
The objectives of the roundtable were discuss and better understand
the following issues associated with e-Business:
Expected changes in railroads and rail customers as a result of e-Business
What do customers expect from railroads? Have their expectations
changed as a result of increased use of e-Business?
What are customer priorities as far as railroads' implementation of e-Business?
What do customers value more- reliable service, shorter transit time, web-enabled
marketing, web-enabled service, customer profiles, service levels?
What are railroads' priorities with respect to implementation of e-Business?
What operational changes are imposed on railroads because of increased
openness associated with e-Business?
Alternative strategies for railroads in implementing e-Business
What opportunities are available to use Operations Research in e-Business
Speaker: Mike Gorman for Gregory C. Fox, VP-Ebusiness, BNSF
||Roundtable on E-Business in Railroads
Moderators: Ajith Wijeratne, NS and Pooja Dewan, BNSF
Mike Gorman, Director e-Business, BNSF
Admir Mesalic, General
Bill Hubbard, Director Logistics Solutions, i2
Bruce L. Haddan, Assistant Vice President Marketing, Norfolk
||Presentations by Panelists
||Panel Discussion Summary
Business Meeting - Sunday May 7 5:00 - 6:00 pm - Blue Spruce Room - Wyndham
Run-off in the election of Treasurer. The new slate of officers is
announced. Proposed changes to the RASIG
Constitution are discussed.
Dutch Treat Dinner - Sunday May 7 6:30 pm
Members of RASIG gather at a local eatery (announced at the business meeting).
Everybody is welcome.
Session 1 - Locomotive Planning Systems Within Railroads
- Monday May 8 10:30 am - 12:00 noon
Coordinator Pooja Dewan, Burlington Northern
Santa Fe, Pooja.Dewan@bnsf.com,
Anshu Pathak, Canadian National, ANSHU.PATHAK@cn.ca,
This paper describes the integration of optimization models into production
environments and the subsequent changes in data requirements and work processes.
The implementation of LDM (Locomotive Distribution Model) at CN will be
the 2001 Locomotive Fleet Size for Norfolk Southern
Mike Wilson & Ajith Wijeratne. firstname.lastname@example.org,
404-897-3028, Norfolk Southern.
This paper describes the process we followed to estimate the number
of road locomotives NS will need for 2001. We will describe the model,
data and the software used in this study.
Implementation of a Real-Time Locomotive Distribution System at BNSF Railway
Brian Roth, BNSF, Brian.Roth@bnsf.Com,
We discuss BNSF Railway's ongoing effort to implement a real-time Locomotive
Distribution System based on the Locomotive Routing Model developed by
Princeton University. Current status and major difficulties encountered
during the experience are described, and a summary of the performance of
the model relative to historical operations is given.
Ravindra K. Ahuja, University of Florida, email@example.com,
352-392-3615, James B. Orlin,
MIT, jorlin@MIT.EDU, 617-253-6606
and Larry Shughart, CSX, Larry_Shughart@csx.com,
We are studying locomotive scheduling problems at the CSX Transportation
and are focusing on incorporating a variety of practical constraints and
business rules. We are developing new integer programming as
well as network optimization based algorithms. We will discuss our progress
to date in solving this problem.
Session 2 - Cancelled
Session 3 - Operations Research in Rail Operations - Monday May 8 4:00-5:30
Joint TSS - RASIG Session
Coordinator Alexandra Newman, The
Naval Postgraduate School, 831-656-3113.
Multi-Attribute Decision Analysis of Train Dispatchers at Inter-Train Conflict
Yildiz Technical University, firstname.lastname@example.org
Adaptive Dynamic Programming for Locomotive Scheduling
Belgacem Bouzaiene-Ayari, email@example.com,
and Warren Powell,
Princeton University, firstname.lastname@example.org
Edwin R Kraft, email@example.com.
This system was field tested in 1994 at Union Pacific's Hinkle yard.
The goal was not to make all connections, but to ensure at least a subset
of the most important ones were protected. A mixed integer, nonlinear
mathematical programming problem was solved in 15-20 seconds on a small
Yusin Lee, firstname.lastname@example.org,
Li-Wen Chen, email@example.com,
and Chieh-Ju Chen, MavisG.firstname.lastname@example.org,
National Cheng Kung University.
Trains have to be maintained at certain limited service mileage.
We propose an MIP with embedded network flow structure that solves for
an optimal train dispatch and maintenance schedule. The model size is linear
to the number of trains in the system, and can be easily modified to solve
for various objectives.
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