1. Engineering Research Institute (In3), Universidad Cooperativa de Colombia, Calle 50A No. 41-34, Medellín 050001, Colombia
2. Faculty of Engineering, Universidad Cooperativa de Colombia, Calle 50A No. 41-34, Medellín 050001, Colombia
3. Engineering Research Institute (In3), Universidad Cooperativa de Colombia, Calle 10 No. 1-64, Ibagué 730001, Colombia
4. VoCATE Ltd., 2 Fountain Place, Worcester WR1 3HW, UK