A real-time method is presented to adoptively estimate three-dimensional unmodeled external torques acting on a spacecraft. This is accomplished by forcing the tracking error dynamics to follow the Lyapunov function underlying the feedback control law. For the case where the external torque is...

Structural classification and parameter estimation (SCPE) methods have been used for studying single-input single. output (SISO) parallel and feedback nonlinear system models from input-output (I-O) measurements. The uniqueness of the I-O mappings of different models and parameter uniqueness of...

This paper demonstrates the utility of systems and control theory in the analysis of economic systems. Two applications demonstrate how the analysis of simple dynamic models sheds light on important practical problems. The first problem considers the design of a retail laboratory, where the...

There is great interest in the application of technological solutions driven by a thriving CRM industry. It has been shown the more effective the implementation of SFA, the greater its impact on increased sales performance. Previous research on SFA adoption has focused on the individual as the...

Presented here are methods for successfully controlling software maintenance activity so that present systems will be more useful and less expensive to support. While it is based on experience at Los Alamos National Laboratory, it is not based on solutions developed and implemented there. Los...

A commercially available knowledge-engineering software development tool has been used to illustrate how regulatory compliance and productivity in the nuclear industry can be improved simultaneously. Given the complex nature of the industry regulatory requirements, organizations that rely...

A commercially available knowledge-engineering software development tool has been used to illustrate how regulatory compliance and productivity in the nuclear industry can be improved simultaneously. Given the complex nature of the industry regulatory requirements, organizations that rely...

viii, 62 pp. Examining Committee Chair: Dr. Patricia Dewey