TY JOUR TI EQUATION FOR ADAPTIVE DESIGN OF APARTMENT BUILDINGS DURING THEIR LIFECYCLE KW adaptive design KW differential equation KW building life cycle KW multi-apartment residential building JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Oparina, L.A. AU Ogurtsov, V.A. AU Vlasova, E.A. AU Obukhova, Y.D. PY 2026 IS 11 PB Belgorod State Technological University named after V.G. Shukhov