Chi-Guhn Lee

TL;DR: The model is applied to a case from a steel converter plant, and the results show that the proposed maintenance policy outperforms some existing maintenance policies in terms of the net revenue.

TL;DR: This work considers the carrier's optimal bid generation problem in combinatorial auctions for transportation procurement and employs both column generation and Lagrangian based techniques for solving the carrier optimization model and presents numerical results.

TL;DR: In this article, a deterministic dynamic program (DP) was proposed to solve the multiple-vehicle routing problem with split pick-ups (mVRPSP), where any supplier may be visited by more than one pickup.

TL;DR: In this article, the authors formulate a linear integer programming model whose objective function includes not only the typical operational cost, but also cost due to the transit time spent by freight in the network, and develop heuristic algorithms to solve large scale instances occurring in rail freight systems in France plus Italy; Germany; and a 10-country European network.

TL;DR: In this paper, a multi-period mixed integer linear programming model is proposed to design the network optimally as well as to optimally operate the network, which involves decisions related to facilities selection, capacity level and location of facilities, allocation of solid waste to facilities, transportation of waste among facilities and distribution of recycled materials.