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Industry Career for OR Professionals
Presented by: Krishna C. Jha
Presentation given at the INFORMS National Meeting, Washington, DC; October 2008.
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Optimal Routing of Locomotives to Shops for Quarterly Maintenances
Presented by: Andy John (CSX Transportation), Ravindra K. Ahuja
Presentation given at the INFORMS National Meeting, Washington, DC; October 2008.
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Locomotive Models at CSX Transportation
Presented by: Andy John (CSX Transportation), Ravindra K. Ahuja
Presentation given at the INFORMS National Meeting, Washington, DC; October 2008.
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Yard Simulation Optimizer: A Decision Support System for Intermodal Yard Planning
Presented by: Rob Girardot (CSX Transportation), Michael Gatto
Presentation given at the INFORMS National Meeting, Washington, DC; October 2008.
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Turning Models into Decision Support Systems
Presented by: Ravindra K. Ahuja
Presentation given at the INFORMS National Meeting; October 2008.
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Tales of an OR Company: From Problems to Solutions to Decision Support Systems
Presented by: Ravindra K. Ahuja
Presentation given at the Operations Research Center, MIT, Cambridge, MA; September 2008.
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New Advances in Solving the Weapon-Target Assignment (WTA) Problem
Presented by: Ravindra K. Ahuja
Presentation given at the Air Force Institute of Technology (AFIT), Wright Patterson Air Force Base, OH; May 2008.
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Solving Complex Scheduling Problems through Decomposition and Network Flows
Presented by: Ravindra K. Ahuja
Workshop given at the INFORMS Practice Meeting, Washington, DC; April 2008.
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Solving Real-Life Railroad Blocking Problems
Presented by: Ravindra K. Ahuja, Krishna C. Jha, Jian Liu
Presentation given at the INFORMS Practice Meeting at Vancouver, BC; April 2007.
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Innovative Blocking Plan Optimizer
Given origin-destination traffic data and yard capacity data, this software generates a recommended blocking plan for the entire network, minimizing the total cost of railcar mileage and railcar handlings while respecting a variety of operating constraints.
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Innovative Train Scheduling Optimizer
Train scheduling software determines how many trains to run; the origin, destination, and route of each train; the train arrival and departure times for each station at which it stops; the weekly operating schedule for each train; and the assignment of blocks of cars to trains, so that all blocks are carried from their origins to respective destinations while keeping total train scheduling costs (comprising of car hire, crew, and locomotive) minimal.
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Innovative Locomotive Planning Optimizer
This software takes, as an input, a train schedule, locomotive availability data, and user-defined business rules and requirements. The software then generates extensive reports suggesting which locomotives are required for each type and recommended consists for each train, train-train connections at each terminal, and optimal deadheading and light engine moves.
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Innovative Locomotive Simulation Optimizer
This software takes, as an input, a train schedule, locomotive availability data, and user-defined business rules and requirements. The software then generates extensive reports suggesting which locomotives are required for each type and recommended consists for each train, train-train connections at each terminal, and optimal deadheading and light engine moves.
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Innovative Locomotive Shop Router
This software simulates locomotive movement across a rail network and keeps track of four major resources involved in locomotive management - locomotives, trains, terminals, and shops. It mimics a real-life environment in which train travel times are random variables, locomotives periodically visit shops for quarterly maintenances, locomotives break down at random intervals and go to shops for repairs, and shop repair and terminal processing times are random variables.
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Innovative Crew Scheduling Optimizer
This software maps the assignment of railroad crew to trains as the flow of crew on an underlying network (where different crew types are modeled as different commodities), uses an integer programming-based approach to solve the underlying network flow model, and determines the optimal assignment of crew to trains.
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Innovative Hump Yard Manager
This software allows a decision maker to understand, analyze, and optimize the resource utilization at hump yards by performing a railcar-by-railcar discrete simulation including train arrival and departure schedules, network blocking plans, and terminal track geometry. The analysis is also constrained by available resources, including yard crew, locomotives, and railcar inspector schedules.
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Innovative Yard Simulation Optimizer
This meet-pass planner generates a feasible flow of trains on a track corridor where trains moving in different directions compete for limited line (track) capacity. This optimization-based software recommends which train should yield in a passing situation.
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