“…Nowadays modeling (Bender, 2012) and experimental studies (Wang et al, 2019) as well as simplify the structure of objects (Shu and Kochan, 2013) are often used to solve various problems in science (Bender, 2012), technology (Irfan et al, 2019), medicine (Pelc et al, 2019) and industry (Hreha et al, 2015;Wojciechowski et al, 2018). They make it possible, by simplifying the objects or identifying their essential properties to investigate the behavior of complex devices and systems, and based on these studies, build theories that will suggest the optimum way of operation or predict their behavior under real operating conditions.…”