TY JOUR TI INFLUENCE OF SMOKE CONCENTRATION AND FALSE FACTORS ON THE ACTIVATION OF AUTOMATIC FIRE ALARMS KW fire alarm KW smoke concentration KW sensors KW false factors KW convection-diffusion model KW detection algorithm KW sensitivity optimization JO Scientific and analytical journal «Vestnik Saint-Petersburg university of State fire service of EMERCOM of Russia» AU Rahmatullina, E.F. AU Permyakov, A.V. AU Khafizov, I.F. AU Khafizov, F.S. PY 2025 IS 2025 PB Saint-Petersburg University of State Fire Service of Emercom of Russia