This book focuses on the latest developments in the field of engineering. Chapter One presents the mathematical modeling of an electric power distribution network segment using the PLC technology, through the use of a traditional model. Chapter Two proposes a framework which incorporates scale-reduction and offers two variants which use different scale reduction approaches. Chapter Three discusses recent advances in nonlinear shock vibration isolation. Chapter Four examines the modeling of biological neuron by electronic circuit and application for IC and MEMS microrobot. In Chapter Five, after an introductory part dealing with the basic of cosmic ray physics and with the main properties of the cosmic ray time variations, several numerical analyses of cosmic ray data collected by a neutron monitor station in small time steps over more than 50 years has been carried out with different methods, to investigate periodical and non-periodical patterns. Chapter Six investigates and evaluates an ensemble of approaches for skin detection based on different classifiers, color space and color constancy pre-processing.