Yuriy Sirenko Since1974, he has held several research and academic positions at A.Ya. UsikovInstitute of Radiophysics and Electronics of National Academy of Sciences ofUkraine (IRE NASU), Kharkiv, Ukraine,where he has been a head of the Mathematical Physics Department since 1988. He isalso an invited professor at L.N.Gumilyov Eurasian National University, Astana,Kazakhstan since 2013. He also was a professor at V.N.Karazin Kharkiv NationalUniversity, Kharkiv, Ukraine (1989–1997). Heis an author of 8 books and more than 200 research papers.The Candidate of Science Degree (Ph.D.degree equivalent) in physics and mathematics he got from the Kharkiv National University in 1978.The Doctor of Science Degree in physicsand mathematics he got from the KharkivNational University in 1988.Heis recognized as an expert in the fields of radio physics and mathematicalphysics. He has also experience in teaching fundamental andapplied mathematics andmodern methods in computational electrodynamics.ResearchinterestsWave scattering theory, analyticaland numerical techniques for wave motion simulation, resonance phenomena,spectral theory of open structures, operator theory and its applications. Semi-analytical methods for solving diffraction problems of the resonanttheory of gratings and the spectral theory for open periodic and waveguideresonators have been developed. Efficient semi-analytical and numerical methodsfor the analysis of transient processes under resonance conditions in gratingsand waveguides have been elaborated. Grants, awards1998 – 1999Research and Teaching Personal Grant of the International Science Foundation1996 – 1999Research Grant of Royal Academy ofScience, Sweden.1993Research Personal Grant of the International Science Foundation.1989 StatePrize in the Field of Science and Engineering,Ukraine.Lyudmyla Velychko hasmore than 30 years of research experience in the areas of radio physics and appliedmathematics. Since 1982, she has been with A.Ya.Usikov Institute ofRadiophysics and Electronics of the National Academy of Sciences of Ukraine,Kharkiv, Ukraine. Since 2000, she has been a SeniorResearcher at the Mathematical Physics Department there.The Candidate of Science Degree (Ph.D. degree equivalent) in physics andmathematics she got from A.Ya.Usikov Institute of Radiophysics and Electronics of theNational Academy of Sciences of Ukraine in 1996 with the thesistitle 'Inverse diffraction problems for plane periodic gratings'.She is an authorof more than 50 research journal and conference papers and a book chapter.ResearchinterestsElectromagnetictheory of gratings; simulation and analysis of resonant wave scattering in thetime domain. Development of methods for solving inverse problemsin electrodynamic theory of gratings. Elaboration of algorithms for analysisand model synthesis of plane pattern-forming and efficiently absorbingstructures. Simulation and analysis of resonant phenomena in open structures ofcomplex geometry by time domain and frequency domain methods combined.
