Marianne Idzi

Date of Award


Document Type


Degree Name

Master of Science


Department of Operational Sciences

First Advisor

John J. Borsi, PhD

Second Advisor

James T. Moore, PhD


The mission of Space Operations Squadrons is continuous support of military satellite systems. The scheduling problem associated with conducting continuous operations is threefold. The first problem is finding cyclical crew shift schedules that meet daily manning requirements, adhere to current regulations, contain a minimum number of workshift changes during consecutive duty days, and maximize the non-duty time allowed between duty shifts. The second problem is to establish a sea of criteria to evaluate alternative shift schedules. Finally, the third problem is to minimize the number of personnel required to meet the scheduling requirements stated in the first problem. This study developed mathematical relationships that led to an approach for generating cyclical crew shift schedules. This method was used to generate an alternate crew shift schedule which was compared to the current schedule using a set of criteria developed for determining the effectiveness of a schedule. The alternate schedule is deemed better than the current schedule used by the First Space Operations Squadron. In addition, this study tested if non-crew scheduling could reduce the number of people needed to support satellite operations. Non- crew scheduling was modeled as a set covering problem. The set covering method shows that the scheduling requirements can be met using a total of thirty-six Crew Commanders.

AFIT Designator


DTIC Accession Number



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