1. M.S. Student, Faculty of Technological Engineering and Industrial Management, Transilvania Univ. of Brasov, B-dul Eroilor 29, Braşov 500036, Romania.
2. Lecturer, Faculty of Technological Engineering and Industrial Management, Transilvania Univ. of Brasov, B-dul Eroilor 29, Braşov 500036, Romania (corresponding author). ORCID: .