Exploiting process plan flexibility in production scheduling: a multi-objective approach

Article Abstract:

A study was conducted to analyze the selection of a process plan by trading off cost and load balance goals. The vector optimization problem was changed into a set of auxiliary scalar problems to accommodate difficulties with the problem. Precedence constraints were then relaxed while a set of loading decisions were taken for released orders. In addition, heuristics were evaluated on a set of benchmark problems.

Production Management, Management Dynamics NEC, Production Planning & Control, Planning, Management techniques, Production control, Production planning

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A comparison of two lot sizing-sequencing heuristics for the process industry

Article Abstract:

Two lot size-sequencing models for a chemical processing operation are compared for effectivity in improving production plans. Under conditions of demand uncertainty and a partially frozen planning horizon and rolled several times, both the Heuts-Selen (HS) and Naidu-Singh/Heuts-Selen (NSHS) heuristic models perform equally well. HS and NSHS models also entail significantly lower costs.

Evaluation, Economic lot size

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Classical and new heuristics for the open-shop problem: a computational evaluation

Article Abstract:

A group of new heuristics was found to be more effective in resolving the open-shop problem than the classical heuristics. A computational evaluation revealed that the H2 heuristic, one of new heuristics developed, is capable of solving more than 90% of randomly generated problems. The H1 heuristic, meanwhile, was found to be highly effective in addressing Hurink's instances.

Research and Development in the Physical, Engineering, and Life Sciences, Mathematics, Research

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