Van der Pol Oscillators Based on Transistor Structures with Negative Differential Resistance for Infocommunication System Facilities.- Study of the Influence of Changing Signal Propagation Conditions in the Communication Channel on Bit Error Rate.- Quality Assessment of Measuring the Coordinates of Airborne Objects with a Secondary Surveillance Radar.- Pulse and Multifrequency Van der Pol Generators Based on Transistor Structures with Negative Differential Resistance for Infocommunication System Facilities.- The Method of Redistributing Traffic in Mobile Network.- Complex Tools for Surge Process Analysis and Hardware Disturbance Protection.- Development of Evaluation Templates for the Protection System of Wireless Sensor Network.- Studying of Useful Signal Impact on Convergence Parameters of the Gradient Signal Processing Algorithm for Adaptive Antenna Arrays that Obviates Reference Signal Presence.- Interference Immunity Assessment Identification Friend or Foe Systems.- Estimation of Signal Parameters Using SSA and Linear Transformation of Covariance Matrix or Data Matrix.