TY JOUR TI TRANSFORMATION OF THE CONCEPT OF LEADERSHIP: FROM A SOCIAL-PSYCHOLOGICAL PHENOMENON TO TECHNOLOGICAL LEADERSHIP KW leadership KW conceptual evolution KW socio-psychological phenomenon KW management KW technological leadership KW digital leadership KW digital transformation KW Fourth Industrial Revolution JO Trade, service, food industry AU Demchenko, S.K. AU Sartene, O.T. AU Tyshchenko, G.D. PY 2025 IS 5 PB Siberian Federal University