Guest Editors:Tai Fei, PhD, Dortmund University of Applied Sciences, Dortmund, GermanyShunqiao Sun, PhD, The University of Alabama, Tuscaloosa, United States of AmericaMarkus Gardill, PhD, Brandenburg University of Technology Cottbus-Senftenberg, Cottbus, GermanyChangzhi Li, PhD, Texas Tech University, United States of AmericaRick
