The method of risk assessment was proposed for analysis the financial processes using the principles of systems analysis.

The structural and functional principles of modem equipment construction for over-the-horizon communication were developed. Time adaptation algorithms for changing conditions of over-the-horizon communication station, based on fuzzy conclusion algorithms were developed. Algorithms of frequency adaptation for initialization and continuous operation modes were developed. Algorithms to receive energy estimations of the channel and their statistical parameters were developed.

The performance behavior of amplifiers with series-additive operational amplifiers for voltages up to 1000 V has been determined. An automated system for research on broadband amplifiers has been designed. Experimental samples of the amplifier for voltages up to 1000 V in the frequency range up to 100 kHz and multi-channel measurement system for constant and alternating voltage and current, power, phase shifts, nonlinear distortion and temperature measurements have been designed and fabricated.

Developed a comprehensive approach to the problem of optimizing energy consumption, improving energy efficiency and sustainability of the most energy-intensive consumers, mining companies and mining installations by applying the means of diagnosing their energy efficiency, energy-saving systems of electric drive control devices, power quality and introduction of technological measures for saving energy.

Cryptanalytical methods of one-way mappings are modified and developed in classical and quantum computational model. New statistical criteria are proposed for evaluation of random and pseudorandom generators’ quality. Security evaluation methods against differential and linear cryptanalysis are developed for non-Markov symmetric block ciphers with their structural specific taken into consideration. Upper bounds of average probabilities of integral differentials are estimated for some classes of mappings.

There are proposed the methodological, mathematical and algorithmic toolkit for the integrated system to ensure the security and survivability (ISSS) of complex technical systems (CES) functioning in real time based on the timely formation and implementation of decisions and unremovable threshold time limit for cycle control in abnormal conditions.

A new architecture and basic components of the UAV control system with robotic devices and Tactical Support Platform (TSP) for horizon control so a drone and robot were develop, the structure of hardware and software complex Ground Control Centre (GCC), circuit integration of major subsystems and equipment – registration server, data analysis and data processing ground facilities monitoring results, the server for access to the resources of the relevant data warehouses and databases, components of these management systems and data streams and video.

Novel method and technology of planar scanning ultrawideband antenna arrays for L-,S-, C- bands were developed. Attractive features of the arrays are wide angle scanning sector (up to ±45° in orthogonal planes), low level of cross-polar radiation, low active reflection losses (<0,3 for the absolute majority of array elements) in ultrawide frequency band with coverage up to 7:1. In addition developed antenna arrays are characterized by high efficiency (up to 95%) in L-,S-,C-bands, low weight (less than 15 kg/m2) and low profile (<λmax/10).

An efficiency, reliability and quality of IT infrastructure service delivery are increased at key stages of its life cycle, primarily at its operation and development stages, through the development and implementation of management system that provides the monitoring of system parameters taking into account the mathematical and information models and methods of analysis, structure synthesis and IT infrastructure operation management.

An experimental model of a digital radio link with a gigabit bandwidth is functional in the terahertz range, and which can be used in a new generation of ultra-high switching of mobile communication networks for transmitting and receiving digital data at a rate up to 1 Gbit / c in the frequency range 128 - 134 GHz range communication within 1 km.