1. University Politehnica of Bucharest, Bucharest, Romania
2. National Institute of Research and Development in Mechatronics and Measurement Technique, Bucharest, Romania
3. National Institute for Research and Development in Informatics, Bucharest, Romania
4. Department of Computer Engineering, Electrical Engineering and Applied Mathematics (DIEM), University of Salerno, Fisciano, Italy
5. Department of Science and Technology, University of Naples Parthenope, Naples, Italy