TY JOUR TI Modeling as a method for implementing a program of laboratory works in the process of distant teaching technical protection of information KW technical protection of information KW simulation of laboratory measurements KW Qucs KW structural-functional and circuit simulation JO Vestnik of the St. Petersburg University of the Ministry of Internal Affairs of Russia AU Barkalov, Y.M. AU Telkov, A.Y. PY 2021 IS 2021 PB SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION