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 PB SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION