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A mathematical programming approach to the scheduling of sorting operations

✍ Scribed by Frederic H. Murphy; Edward A. Stohr

Publisher
John Wiley and Sons
Year
1978
Tongue
English
Weight
848 KB
Volume
25
Category
Article
ISSN
0894-069X

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✦ Synopsis

Abstract

In this paper we describe an approach to the scheduling and/or real‐time control of sorting operations in the presence of deadlines. The problem arises in the postal service where mail has to be sorted by zip codes, and in the banking system where checks have to be sorted according to the bank on which they are drawn. In both applications losses are incurred if items miss their clearing deadlines. For example, in check‐sorting an extremely important objective of the control system is to reduce the β€œfloat” i.e., the total dollar value of the checks which miss their deadlines. The proposed real‐time control system utilizes a linear program which chooses between alternative sort‐patterns and assigns the various processing steps to the time periods between deadlines.

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