TY CONF TI TO THE QUESTION OF JUSTIFICATION OF THE EFFICIENCY OF MODERNIZATION OF WORKING PROCESSES AND FUNCTIONAL UNITS OF MECHANISMS KW efficiency criterion KW mathematical model KW system analysis JO Ecological and resource-saving technologies in science and technology AU Kosenko, A.E. AU Zelenina, E.A. AU Kamalova, N.S. PY 2022 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov