1. GIDTEC, Universidad Politécnica Salesiana, Cuenca 010105, Ecuador
2. CIBYTEL—Engineering School, Universidad de Los Andes, Mérida 5101, Venezuela
3. Mechanical Engineering Department, Universidad de Tarapacá, Arica 1010069, Chile
4. School of Mechanical Engineering, Dongguan University of Technology, Dongguan 523808, China