TY JOUR TI Analysis of the organizational structure of PJSC "Rosseti Severny Kavkaz" KW PJSC Rosseti Severny Kavkaz KW organizational structure KW divisional-functional model KW electric grid company KW corporate management KW centralized management KW branch network KW board of directors KW fight against electricity losses KW North Caucasus Federal District JO Journal of Applied Research AU Kurbanova, U.A. AU Abakarova, B.T. PY 2026 IS 0 PB ITBO University