This volume contains six chapters describing some of the latest advancements in engineering research. Chapter One presents a detailed methodology to evaluate bio-based projects, including financial, technical, and market uncertainties at the early stages, when less information is available. Chapter Two analyzes the latest scientific articles and reports which deal with the adverse consequences of 5G network development. Chapter Three explains how new technologies, including downlink and uplink decoupling and machine learning, can support 5G networks and form core components of future networks. Chapter Four presents the latest research results on the advantages and challenges of non-orthogonal multiple access networks. Chapter Five explores the four largest South Korean shipyards, analyzing their strategy and management techniques. Lastly, Chapter Six examines the factors affecting the choice of welding method in the basic stages of shipbuilding.