International Journal of Advanced Statistics and IT&C for Economics and Life Sciences Editor Daniel Volovici Lucian Blaga University of Sibiu, Romania Associate Editor Volume 6 R. Crețulescu, Lucian Blaga University of Sibiu, Romania Number 2 December 2016 ISSN 2067 – 354X Volume 6 Number 2 2016 ISSN 2067 – 354X International Journal of Advanced Statistics and IT&C for Economics and Life Sciences Editor Daniel Volovici Lucian Blaga University of Sibiu, Romania Associate Editor R. Crețulescu, Lucian Blaga Univesity of Sibiu, Romania International Journal of Advanced Statistics and IT&C for Economics and Life Sciences Editor: Daniel Volovici, Department of Computer Science, Hermann Oberth Faculty of Engineering, Lucian Blaga University of Sibiu, 4 Emil Cioran St., 550025 SIBIU, Romania, Tel: + 40 269217928, Fax: 40 0269212716, E-mail:
[email protected] Associate Editors: Radu George Crețulescu, Lucian Blaga University of Sibiu, Romania Advisory Member: Dimitris Karagianis, University of Vienna, Austria Editorial Assistants: Daniel Morariu, Lucian Blaga University of Sibiu, Romania Antoniu Pitic, Lucian Blaga University of Sibiu, Romania Editorial Office: Lucian Blaga University of Sibiu Faculty of Engineering Str. Emil Cioran, Nr. 4, Sibiu, 550025, România Tel: +40-(269) 21.79.28 Fax: +40-(269) 21.27.16 http://csac.ulbsibiu.ro/asitels International Editorial Advisory Board: Andrei Achimas (Romania) Irina Vassileva (Franta) Radu Cotet (Belgium) Virgil Enatescu (Romania) Abdel-Badeeh M. Salem (Egypt) Florin Gh. Filip (Romania) Petre