Researcher (retired). He was born in Poland on the 8th of September, 1952. obtained his BSc in Physics in 1976, his MSc in Astrophysics in 1978 and his PhD in 1990 from the Sofia University (Bulgaria). From 1975 to 1978, he worked as an Astronomer in the Public Observatory at Kardjaly (Bulgaria) and from 1989 to 1994 to National Observatory of Athens. From 1994 to 2006, he worked as science support staff at the former Institute of Astronomy and Astrophysics of the National Observatory of Athens. In 2006, he was promoted to Associate Researcher and since 2009 he works as Senior Researcher at the Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing of the National Observatory of Athens. He retired in 2019. His research interests are in artificial intelligence methods development and application for data processing and analysis (in astrophysics, engineering and medicine), classification and parameterization of galaxy spectra, galaxies evolutionary spectra modeling, galactic and extra-galaxy stellar systems content, observational spectrophotometry and photometry of symbiotic and symbiotic-like stars.
Emeritus Professor, Department of Physics, Aristotle University of Thessaloniki, Greece. He was born in Drama, Greece, on the 20th of June, 1935. He received the B.Sc. in Mathematics from the University of Athens, Greece (1957), the M.Sc. in Celestial Mechanics from the Yale University, U.S.A. (1964) and the Ph.D. in Astronomy from the University of Thessaloniki, Greece (1966). He worked as Chief Assistant, Docent and Assistant Professor (1973) at this University before he was elected there as Professor of Theoretical Mechanics (1982). His scientific interests include the General and the restricted three-body problem, the inverse problem of Dynamics and the Integrability questions. He has published more than 70 scientific papers in refereed journals and 10 papers in conference proceedings and special volumes / books. He has also published four textbooks (“Spherical Astronomy”, “General Mathematics”, “Differential Equations and Applications” and “Problems of Theoretical Mechanics”) and co-authored another 4 textbooks (“Introduction to Continuum Mechanics”, “Problems of Differential Equations”, “Exercises in Astronomy” and “Elements of Spherical Astronomy and Celestial Mechanics”).