TY CONF TI MATHEMATICAL MODELING AND THE SECOND LAW OF THERMODYNAMICS KW Carnot cycle KW isothermal process KW circular process KW reversible process KW irreversible process KW heat engine JO MODELING INFORMATION SYSTEMS AND TECHNOLOGIES – 2025 AU Skvorcova, E.I. AU Yagodkin, A.S. AU Buchnev, S.O. PY 2025 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov