Automatic Test Equipment Software Life Cycle Cost Simulation Model Validation.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF SYSTEMS AND LOGISTICS
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This thesis concerns validating a model, developed in 1973 by Air Force Institute of Technology students, Captains Wilson and Morton, which was designed to aid managers in predicting acquisition and support costs of Automatic Test Equipment ATE software. The validation effort used the method of differences for coding nominal level data obtained from interviews of software programmers, and analysis of variance and multiple linear regression to derive a relationship between a manhours correction factor, the dependent variable, and Language, Documentation, and Training, the independent variables. Outputs of the model were compared against manhours from historical data on ATE software in the C-5A, B-52, F-111, and F-4 weapon systems. The models systems parameters were updated, model outputs were changed using FORTRAN statements, and all tables were graphed. Model control cards were changed for compatibility with General Purpose Simulation System 6000 version 2 on the Headquarters Air Force Logistics Command CREATE computer system. The authors concluded the models predictive capability was good only to a 30 accuracy. Because of major changes in the software life cycle, the model should be restructured before it is used to estimate the cost of ATE software. Author
- Test Facilities, Equipment and Methods