From 1986 to 1994, National Aerospace University Kharkov Aviation Institute: Kharkov, Ukraine
From 02/2010 to 05/2018, Professor of Department of distributed information systems and cloud technologies
National Technical University "Kharkiv Polytechnic Institute", Ukraine
From 2000 to 2018, Statistical theory of production systems
The study of the behavior of the movement of subjects of labour along the technological route, taking into account the interaction between each other and technological equipment
Pihnastyi Oleh M. Quantum mechanics, common sense and philosophical problems / Viktor P. Demutsky, Revol'd V. Polovin, Oleh M. Pihnastyi. - Kharkov : Kharkov nat. univ., 2003. - 192 p.
Pihnastyi O.M. Theory enterprise: Stability functioning of mass production. Marketing. / V.P.Demutsky, V.S.Pihnasta, O.M.Pihnastyi – Kharkiv: V.N.Karazin Kharkiv National University, Publisher: Harkіv: HNU ISBN: 966-623-296-0 , 2003. – 272 p. (in Russian). DOI10.13140/RG.2.1.5018.7123
Pihnastyi O.M. Statistical theory of production systems / O. M. Pihnastyi. - Khar'kov: KhNU, 2007. 388 p.
Pihnastyi O.M. Model of conveyer with the regulable speed / O.M.Pihnastyi, V.D.Khodusov // Bulletin of the South Ural State University. Ser.Mathematical Modelling, Programming & Computer Software (Bulletin SUSUMMCS), 2017, vol.10, no.4, pp.64-77 DOI: 10.14529/mmp170407.