1. CONFRIM Centre for Smart Manufacturing, University of Limerick, V94 C928 Limerick, Ireland
2. Department of Mathematics, Universiti Pertahanan Nasional Malaysia, Kuala Lumpur 57000, Malaysia
3. Faculty of Computing and Informatics, Universiti Malaysia Sabah, Kota Kinabalu 88450, Malaysia
4. Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Kota Kinabalu 88450, Malaysia