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Excitation of own oscillations in semiconductor components of radio products under the exposure of third-party electromagnetic radiation
(Національний технічний університет "Харківський політехнічний інститут", 2022) Serkov, Aleksandr; Breslavets, Vitalii; Breslavets, Juliya; Yakovenko, Igor
The subject matter is the processes of analysis and mechanisms of interaction of EMP-induced currents and voltages with the processes characterizing the functional purpose of radio products, is usually carried out within the framework of the theory of distributed circuits. The presented approach makes it possible to evaluate the performance criteria in general (for example, to evaluate the critical energy characterizing a thermal breakdown), however, issues related to the determination of various types of electromagnetic interactions that occur directly in the components of a product under the influence of EMR remain open. The aim is the possibility of setting up theoretical and experimental studies based on the proposed calculation model for excitation of natural vibrations of a semiconductor structure (exponential growth of amplitude). The parameters of a third-party pulsed electromagnetic field, induced currents and characteristics of semiconductor devices have been established within which the regime of amplification of natural vibrations of a semiconductor structure is observed. The objectives are: mechanisms of interaction of induced currents with surface vibrations of semiconductor components of a radio product under the influence of pulsed electromagnetic radiation. The methods used are: methods of the theory of small perturbations in determining the spectrum of natural oscillations of the system - currents induced by electromagnetic radiation and natural oscillations of the components of the radio product. The following results are obtained: The mechanisms for the appearance of reversible failures of semiconductor components of radio products under the influence of third-party pulsed electromagnetic fields are determined. It has been established that the presence of a current induced by external radiation leads to the establishment of a mode of amplification of natural oscillations of semiconductor components of a radio product (reversible failures). Conclusion. Quantitative estimates of amplification (generation) modes of oscillations of semiconductor devices, distorting their performance depending on the parameters of external electromagnetic influence, allows developing mechanisms for electromagnetic compatibility of microwave radio products. A comparative analysis of the calculated data obtained in the work can be used in the manufacture of radio devices operating in the millimeter and submillimeter range (amplifiers, generators and frequency converters).
Analysis of epileptic signals based on discrete Hartley transform and discrete Fourier transform
(Istanbul technical university, 2017) Horiushkina, A. E.; Breslavets, J. V.
In this paper, the proposed approach to the problems of assessing the rhythms of the brain develops an analysis is made of the existing features of processing neurological signals. For the analysis of epileptic discharges, which are the focus of work, it is proposed to use orthogonal transformations. This was done on the basis of a reasoned model of epileptic discharges as a class of broadband pulse signals. The analysis of the main features of the discrete Fourier and Hartley transforms is presented as the main methods of signal processing in the case of epileptic seizures is carried out. The results of the analysis of the real, containing a fragment of the epileptic discharge of the EEG record obtained on the basis of the proposed approach are presented.
Cognitive design methods for computer games content
(Istanbul technical university, 2017) Breslavets, J. V.; Horiushkina, A. E.
A degree in cognitive science provides the opportunity to work in many fields of human and technology. For instance, cognitive science can be used within usability and design, game development, vehicle, road safety, patient safety, technical aids, speech and dictation, technical writer and other forms of processing. Computer game enthusiasts spend many hours in the game, and this intense activity can change the brain and behavior. We consider the studies, which investigate the ability video games to change processes in spatial knowledge in this study. We will outline the initial stages research of the basic mechanisms of training, and also we will consider possible applications this new knowledge. Several experiments have shown that the game of gaming action causes changes in a number of sensory, perceptual and attention that are important for many tasks in spatial cognition.
Cognitive methods in technologies of creating computer games
(Istanbul Technical University, 2019) Breslavets, J.; Breslavets, V.; Kasilov, O.; Serkov, O.
The use of computer training systems allows individuals to individualize the learning process for each student on the basis of information technology. The purpose of the work is to control the behavior of the student by changing the objective complexity of the teaching material in accordance with the subjective complexity that arises during the training. The task is to develop and theoretical substantiation of the methods of the individualized approach of students for training professional competencies by creating individual trajectories for the seizure and acquisition of knowledge on the basis of information technologies. The method of organizing the learning process with the use of a computer training system, the functioning of which is implemented by a person-oriented student model, is formed. The results of the experimental study proved that due to the adaptation, each student begins to work with the same intellectual load for different categories of students. The structuring of didactic material in the form of a graph with vertices of the corresponding sections of the content, and the management of transitions implements the control system of mastering the material, allows to improve the process of individualization of training.

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