The process of defining the architecture, components, modules, interfaces, and data for a system to satisfy specified requirements is known as systems design. In this book, the authors present topical research examining the development, analysis and applications of systems design. Topics include the application of mathematical tools to screen, model and control variability in laboratory systems; the optimization of haulage systems in an underground small scale mine using fuzzy sets; a new face recognition method using QR decomposition; development of wireless automatic checking systems for emergency lights via the internet; design and modeling of a series hybrid propulsion system for light urban vehicles; and lubrication systems for spacecraft applications.