Mykhaylo I. Andriychuk received the M.Sc. degree in the computational mathematics from the Lviv National University, and the Ph.D. degree in the mathematical modeling from the Kyiv National University in 1976 and 1987, respectively. Currently, he is the senior scientist at the Pidstryhach Institute for Applied Problems in Mechanics and Mathematics (IAPMM), NASU, Lviv, Ukraine. In 1996, Dr. Andriychuk received the academic status “senior scientist” in the computational mathematics from the IAPMM. His professional performance includes 5 books, more than 100 papers in the scientific journals and international conference proceedings, which concern to the diffraction and antenna synthesis theory, optimization methods, nonlinear integral and matrix equations. His professional experience includes also teaching in two Lviv Universities. He is in position of the visiting professor at the Lviv Polytechnic National University now. Dr. Andriychuk is IEEE Member since 1995, and IEEE Senior Member since 2003.