Alireza Vali Pour Baboli, Technical and Vocational University, Iran

Muhammad Asif, King Fahd University of Petroleum & Minerals, Saudi Arabia

Ephraim Suhir, Portland State University, USA

Kamil Arslan, Karabük University, Turkey

Mariana Dumitrescu, University Dunarea de Jos Galati, Romania

Fernanda Otilia Figueiredo, Faculdade de Economia, Universidade do Porto, Portugal

Malinka Spasova Ivanova, The Technical University of Sofia, Bulgaria

Muhyiddine Jradi, University of Southern Denmark, Denmark

Corrado lo Storto, University of Naples Federico II, Italy