1. Department of Industrial Engineering, University of A Coruña, CTC, CITIC Avda., 15405, Ferrol, A Coruña, Spain
2. University of La Laguna, Department of Computer Science and System Engineering, Avda. Astrof. Francisco Sánchez s/n, S/C de Tenerife, Spain
3. Department of Mining Exploitation, University of Oviedo, Calle San Francisco, 1, Oviedo, Spain
4. Hospital Universitario de Canarias, S/C de Tenerife, Spain
5. Department of Systems and Computer Networks, Wrocław University of Science and Technology, Wrocław, Poland