TY JOUR TI RESEARCH OF THE FUNCTIONING SYSTEM OF THE LIGHTING MODE KW lighting mode KW qualitative and quantitative characteristics KW lighting installation KW energy efficiency KW categorical-symbolic method "Wu Xing pentagram JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Gulbinas, A.S. AU Shirokova, D.N. PY 2021 IS 6 PB Belgorod State Technological University named after V.G. Shukhov