This book focuses on the latest developments in the field of engineering. Chapter One proposes and evaluates a fuzzy logic based freeway traffic control strategy to overcome the limitations of existing strategies. Chapter Two shows how the particle swarm optimization technique, PSO, can be successfully applied to elucidate several applied mathematical and chemical engineering problems. Chapter Three reviews off-state leakage currents of semiconductor devices and their performances. Chapter Four is directed towards estimating sensor failure of a networked control system subject to a random packet dropout. Chapter Five examines epitaxial oxide materials for functional and nano-electronic device applications. Chapter Six focuses on thermal deviation management in large machine tools. The final chapter reviews the most typical kinds of geotechnical damage caused by natural disasters, and presents the construction methods using geosynthetics that can be applied in order to minimize the consequences of natural disasters.