1. Kielce University of Technology, Faculty of Mechatronics and Mechanical Engineering, Kielce, Poland, EU, norrad@tu.kielce.pl
2. Cracow University of Technology, Institute of Applied Informatics, Cracow, Poland, EU, jacek.pietraszek@mech.pk.edu.pl
3. Kielce University of Technology, Faculty of Environmental, Geomatic and Energy Engineering, Kielce, Poland, EU, orman@tu.kielce.pl