TY JOUR TI DEFINITION AND SUBSTANTIATION OF ARCHITECTURAL OBJECTS' FUNCTIONAL STRUCTURE ON THE BASIS OF SYSTEM APPROACH KW functional structure KW functional planning structure KW architectural object KW system approach KW system principle JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Vasilenko, N.A. AU Chernysh, N.D. PY 2023 IS 8 PB Belgorod State Technological University named after V.G. Shukhov