Wikrom Jaruphongsa

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We present a two-echelon dynamic lot-sizing model with two outbound delivery modes where one mode has a fixed set-up cost structure while the other has a container-based cost structure. Studying the optimality properties of the problem, we provide a polynomial solution algorithm based on a dynamic programming approach. © 2007 Elsevier B.V. All rights(More)
SIMAIR is a C++ based research tool meant for the simulation of airline operations. It provides a means for devising and evaluating various airline recovery mechanisms to handle disruptions, and can also be used as a tool to evaluate the performance of a given schedule of operations. The performance of a given recovery mechanism can be quantified for(More)
This paper deals with a lot-sizing model for major and minor demands in which major demands are specified by time windows while minor demands are given by periods. For major demands, the agreeable time window structure is assumed where each time window is not strictly nested in any other time windows. To incorporate the economy of scale of large production(More)