TY CONF TI METHODOLOGY FOR CONSTRUCTING AN INFORMATION MODEL OF ETHYLENE PRODUCTION BASED ON DFD ANALYSIS AND SYSTEM DECOMPOSITION KW information model KW DFD-analysis KW system analysis KW information flows KW software architecture JO MODELING INFORMATION SYSTEMS AND TECHNOLOGIES – 2026 AU Ryzhikh, A.M. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov