The 4^th milestone meeting of our NATO SPS G5647 project was held in Ukraine between 29 September - 1 October 2021, hosted by Lviv Polytechnic National University and Prof. Sergii Ubizskii Project Co-Director.

The meeting started with the speech of Prof. Zehra Yegingil, who is the project coordinator. The works carried out and planned to be realized so far were presented and discussed with the project participants one by one.