Customer order scheduling in a general job shop environment

Customer order scheduling in a general job shop environment

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Article ID: iaor20012310
Country: United States
Volume: 29
Issue: 4
Start Page Number: 951
End Page Number: 981
Publication Date: Sep 1998
Journal: Decision Sciences
Authors: , ,
Keywords: job shop
Abstract:

The primary objective of this study is to examine the performance of order-based dispatching rules in a general job shop, where the environmental factors are shop utilization and due date tightness. An order is defined as a collection of jobs that are shipped as a group – an order – to the customer, only on completion of the last job of the order. We specifically compare dispatching rules from past job-based studies to some rules adapted to encompass order characteristics. Standard flow time and tardiness measures are used, but in addition, we introduce measures that combine average performance with variation in an attempt to capture the performance of a majority of the orders processed in the shop. Of the 16 dispatching rules tested, our results show that four of the simple rules dominate the others. We also found that order-based rules perform better than their job-based counterparts. The study makes use of multivariate statistical analysis, in addition to the usual univariate tests, which can provide additional insight to managers using multiple criteria in their decision process.

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