TY JOUR TI MODEL OF FIRE SAFETY ASSESSMENT OF OBJECTS BASED ON THE RASCH MEASUREMENT OF LATENT VARIABLES KW fire safety KW Rasch method KW measurement KW latent variables KW security JO Problems of risk management in the technosphere AU Onov, V.A. AU Zenin, A.Y. PY 2015 IS 2015 PB Saint-Petersburg University of State Fire Service of Emercom of Russia