1. Researcher, Dept. of Industrial and Systems Engineering, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile (corresponding author).
2. Associate Professor, Dept. of Industrial and Systems Engineering, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile.
3. Professor, Escuela Técnica Superior (E.T.S.) de Ingenieros Industriales, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain.