TY JOUR TI MATHEMATICAL MODEL FOR CALCULATION OF THE TECHNICAL STATE OF THE COMMUNICATION EQUIPMENT KW the problem of forecasting KW trend scenario KW the reverse problem of forecasting. JO Actual directions of scientific researches of the XXI century: theory and practice AU Popova, A.. AU Baybara, D.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov