4 présentations

• 
  13h30 - 13h55

  Hub Line Location in the Design of Public Transportation Network

  • Elisangela Martins de Sa, prés., Federal University of Minas Gerais
  • Ivan Contreras, Concordia University
  • Jean-François Cordeau, HEC Montréal, GERAD, CIRRELT

  The hub line location problem in public transportation consists of designing a rapid transit line that minimizes the total weighted travel time taking into account the presence of alternative modes of transportation and transferring times. Some algorithms based on the Benders decomposition method are proposed to solve the problem. Computational results show that these algorithms outperform the CPLEX on all instances.

• 
  13h55 - 14h20

  Competitive Hub Location-Pricing Problem

  • Ehsan Nikbakhsh, prés., Tarbiat Modares University
  • Seyed Hessameddin Zegordi, Tarbiat Modares University

  In this talk, we investigate configuring a hub network and determining its service price for an operator entering a market with an existing operator. Assuming static competition, a mixed integer nonlinear programming model and a hybrid genetic algorithm with the Fibonacci search method are proposed to tackle the problem.

• 
  14h20 - 14h45

  Dynamic Facility Location with Generalized Modular Capacities

  • Sanjay Dominik Jena, prés., Université du Québec à Montréal
  • Jean-François Cordeau, HEC Montréal, GERAD, CIRRELT
  • Bernard Gendron, Université de Montréal, CIRRELT

  We introduce a facility location problem with multiple time periods, multiple commodities and multiple capacity levels, where the costs for capacity changes are based on a cost matrix. A strong mixed integer programming model is presented that unifies several existing problems found in the literature.

• 
  14h45 - 15h10

  Simulation of a Physical Internet Based Transportation Network

  • Pedro Furtado, prés., Polytechnique Montréal

  This presentation is based on the Netlogo´s simulation of the distribution of road transportation services based on the physical internet. Based on this idea, instead of hauling trailers from origin to destination using a single tractor, freight is hauled from hub-to-hub, using different tractors allocated to one specific hub.