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Automating Satellite Range Scheduling, S. Michael Schalck
Automating Satellite Range Scheduling, S. Michael Schalck
Theses and Dissertations
The objective of this study was to develop a computer based satellite range scheduling SRS algorithm to create a 24 hour satellite support schedule. The algorithms goal was to schedule as many satellite support requests as possible. An iterative heuristic approach was used to schedule satellite support requests in three successive sub problems. The first sub problem involves scheduling low altitude satellite support requests using a mixed integer programming approach. The next two sub problems each involve scheduling 12 hour blocks of medium and high altitude satellite support requests, again using a mixed integer programming approach. Fourteen 24 hour schedules …
Crew Scheduling Of Space Operations Squadrons (Sops), Marianne Idzi
Crew Scheduling Of Space Operations Squadrons (Sops), Marianne Idzi
Theses and Dissertations
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 …
Set-Up Saving Schemes For Printed Circuit Boards Assembly, Oded Z. Maimon, Ezey M. Dar-El, Tali F. Carmon
Set-Up Saving Schemes For Printed Circuit Boards Assembly, Oded Z. Maimon, Ezey M. Dar-El, Tali F. Carmon
Industrial and Manufacturing Engineering
Focusing on a basic printed circuit board (PCB) assembly line configuration characterized by very long set-up times, we examine two scheduling methods that can significantly reduce the set-up. Both methods -the Grouped Set-Up (GSU) method that has been recently introduced in the literature and the Sequence Dependent Scheduling (SDS) method, which has not been studied in this context -are based on component commonality among PCB types. Using the typical traditional scheduling method as a benchmark, the GSU and the SDS methods are compared in terms of three performance measures: line throughput, average work-in-process (WIP) inventory level, and implementation complexity. Guidelines …
Optimal Scheduling Of Thermal Generating Units In Electric Power Systems, Narsimha Misra
Optimal Scheduling Of Thermal Generating Units In Electric Power Systems, Narsimha Misra
UNLV Retrospective Theses & Dissertations
The Unit Commitment Problem (UCP) in electric power system problem that consists of finding the startup and shutdown schedule of generating units over a period of time (e.g., 24 hrs) so that the operating cost is minimized; The UCP is often characterized by its prohibitive computational time and memory space requirement. The thesis investigates some computational aspects of the problem in an effort to improve the CPU time as well as the quality of the solution. Two algorithms that show significant improvement over existing methods are presented: One is based on the dynamic programming approach and designed for implementation on …