TY CONF TI A SIMULATION MODEL OF A FOOD DELIVERY SERVICE TO DETERMINE THE OPTIMAL NUMBER OF COURIERS AT DIFFERENT HOURS OF THE DAY KW simulation modeling KW food delivery service KW personnel optimization KW discrete event model JO MODELING INFORMATION SYSTEMS AND TECHNOLOGIES – 2026 AU Kosykh, V.D. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov