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We make an improvement on McCahon and Lee's algorithm for two-machine flow shop problem with uncertain processing time represented with fuzzy number. Especially, the scheme used in McCahon and Lee's algorithm for ranking fuzzy processing times is modified to calculate better the minimum makespan. Example and extensive simulation results are presented to show the improved performance on finding optimal...
We discuss methods for solving steady state process optimization problems under parametric uncertainty. The problem is formulated as a two-stage optimization problem (TSOP) which is inherently multiextremal and nondifferentiable. An indirect approach (split and bound method, SB) has been developed to address the nondifferentiability issue. The SB method iteratively solves for lower and upper bounds...
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