Кафедра "Системи інформації ім. В. О. Кравця"

Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/7488

Офіційний сайт кафедри http://web.kpi.kharkov.ua/si

Від 3 червня 2019 року кафедра має назву "Системи інформації ім. В. О. Кравця", первісна назва – "Системи інформації".

Кафедра "Системи інформації" створена 30.06.1993 року у складі факультету автоматики та приладобудування. Від 2004 року входила до складу факультету "Комп’ютерні та інформаційні технології", від 2021 року – Навчально-наукового інженерно-фізичного інституту, від 2022 року – Навчально-наукового інституту комп'ютерного моделювання, прикладної фізики та математики Національного технічного університету "Харківський політехнічний інститут".

Кафедра перейменована на честь її засновника і першого завідувача (1993-2009), кандидата технічних наук, Почесного доктора Мішкольцького університету (Угорщина), академіка Української технологічної академії, Заслуженого працівника освіти України, засновника наукової школи "Інфокомунікаційні системи та технології", професора Кравця Валерія Олексійовича. Від 1989 року по 2014 рік Кравець В. О. плідно працював на посаді проректора з навчальної роботи та міжнародних зв’язків НТУ "ХПІ".

Від 2011 року при кафедрі створено мережеву академію CISCO. Кафедра є співзасновником Учбово-наукового виробничого комплексу (УНВК), що об’єднує понад 25 установ, які працюють в галузі телекомуникації

У складі науково-педагогічного колективу кафедри працюють: 2 доктора технічних наук, 1 доктор фізико-математичних наук, 5 кандидатів технічних наук, 2 кандидата фізико-математичних наук; 3 співробітника мають звання професора, 5 – доцента, 1 – старшого наукового співробітника.

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3D modeling of complex spatial forms by cognitive programming technology method
(Sp. z o.o. "Nauka i studia", 2020) Sokol, G. V.; Lytovchenko, А. P.; Kirakosyan, A. A.; Shut, V. V.; Shugailo, A. O.
This article examines the problem of harmonization of 3D modeling and 3D prototyping of complex spatial forms within the framework of cognitive programming technology. The ways of its solution is offer on the example of the 3D Studio MAX environment. An analysis of the strategic trend of the development of digital programmable technology, from the mathematical modeling of physical, biological and other natural processes when the production-element basis of the nano-level has been reached, has led to the creation of a technology for the direct reproduction of three-dimensional spatial objects of complex forms. Informatics is not only an ontology of projects, but also its spatial materialization. Biological objects are artificially reproduced based on cognitive programming technology. Now in the world in all areas of knowledge there is a burst of digital modeling: through computer engineering and digital modeling is practically any new product. At Japanese exhibitions, a demonstration of the bulk copy process is already underway: digital input of objects is performed at the input, then processing in the 3D modeling environment - and as a result you can print a copy of the prototype. A printer that prints parts for itself, an electric battery with a variable battery, gadgets communicate with each other and are responsible for the comfort of the owner - the reality of the new digital world, which is formed now. With regard to the programmable technology of info communication, not the bandwidth of the channel, but the transformation of the properties of the communication of physical nature in the properties of biological nature and social needs is important.
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.
Analysis of recursive estimation procedure
(Primedia eLaunch, USA, 2020) Sokol, G.; Gerasymov, D.; Shuhailo, A.
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.
Control systems structure in telecommunication networks
(2019) Shuhailo, A.; Sokol, G.
A creative generative neural network for fine art synthesis from recognised images
(Національний технічний університет "Харківський політехнічний інститут", 2018) Mykhailova, D. D.; Yushchenko, A. G.
Creative neural network for the synthesis of logos with the elements of modeling of the interaction of consciousness and subconscious
(Національний технічний університет "Харківський політехнічний інститут", 2018) Yushchenko, A. G.; Sendetskyi, M. N.; Aslanova, L. A.
The development of educational computer games
(ФОП Петров В. В., 2020) Breslavets, J. V.; Nehme, M. N.
The implementation of information and telecommunication technologies in information processes is aimed at achieving a number of goals: accelerating information processing processes and reducing the cost of their implementation, saving a person from the need to perform routine actions and eliminating the negative impact of the human factor on the result of work. The use of electronic teaching aids, that is, using computer technologies in education, not only allows us to achieve these goals, but also allows us to realize a number of unique features that are not available when using traditional teaching aids.
Electromagnetic compatibility of semiconductor structures with a two-dimensional electron layer
(Національний технічний університет "Харківський політехнічний інститут", 2019) Kravchenko, Volodymyr; Knyazev, Volodymyr; Serkov, Aleksandr; Breslavets, Vitaliy; Yakovenko, Igor
The subject matter is the mechanisms of interaction of the flow of charged particles with the surface plasmons of a two-dimensional electron layer (2D) due to the action of external pulsed electromagnetic radiation (EMP).The aim is obtaining design relations that determine to what degree the instabilities of natural vibrationsof a two-dimensional electronic layer of a semiconductor structure may influence the performance of semiconductor devices. The objectives area model of occurrence of reversible failures of radio products arising from the transformation of energy of currents induced by external pulsed radiation to excite electrostatic oscillations of a two-dimensional electronic layer of semiconductor structures. The methodsused areanalytical methods for solving electrodynamics (Maxwell) equations and material equations in the framework of kinetic approach. The following resultshave been obtained: The mechanisms of interaction of the flow of charged particles with the natural electromagnetic vibrations of a two-dimensional electron gas occurring due to the presence of a potential barrier at the interface have been studied. Investigations of functioning of semiconductor components of radio products (structures with two-dimensional electron gas) under the influence of strong pulsed electromagnetic fields have been carried out. A kinetic equation describing the change in thenumber of electromagnetic oscillations of such a system has been obtained. The solution of the equation has been found, which allows determining the influence of the barrier on the instability increment of surface vibrations as well as the contributions of the transmitted and reflected components of the particle flux to the increment. Equations for the increment of instabilitie sallow us to determine the energy loss of the induced currents on the excitation of natural oscillations i.e. the emergence of a mode of oscillation generation, which is characterized by a change in the volt-ampere characteristics of radio devices. Conclusion. A comparative analysis of the instabilities of vibrations of structures with a two-dimensional electron gas has been carried out under conditions when the interaction of waves and particles is randomand deterministic. It is shown that the differences in the expressions for increments are associated with a change in the size of the region of interaction of waves and particles. Differences in the influence of the potential barrier on the increment are established in cases where the interaction of surface plasmons and charged particles is determined or has the character of random collisions. The mechanisms of the influence of the boundary on the interaction of surface electromagnetic waves and electrons in the presence of a potential barrier are determined. I ntrinsic electromagnetic oscillations of a two-dimensional electron layer are taken as research objects. The results obtained in the work can be used to assess the operability of electronic equipment in millimeter and submillimeter ranges under the influence of pulsed electromagnetic fields.
Evolutionary design of seven-tier LM-mode filters optimized with original knowledge-based cad system
(НТУ "ХПИ", 2014) Yushchenko, A. G.; Mamedov, D. B.
The evolutionary strategy of multi-tier WDR-filters with LM-modes, optimized with original knowledge-based CAD system designing is proposed and tested. Main point of the strategy is to solve the problem of synthesis and optimization of the seven- (or more) tiered filter through the gradual complication of the simplest one-tiered design, which corresponds to the evolutionary principle of gradual cost function complication. The efficiency of the strategy is confirmed by the designing of three to five and seven-tier millimeter filters, which are intended for the next generation of millimeter wave-band wireless systems and conform to the latest standards like ECMA-387, Wireless HD, IEEE 802.15.3c and IEEE 802.11ad.
Excitation of magnetoplasma oscillations in semiconductor structures by fluxes of charged particles
(Національний технічний університет "Харківський політехнічний інститут", 2021) Serkov, Aleksandr; Breslavets, Vitaliy; Yakovenko, Igor; Fomenko, Andrii
The subject of the papers is the processes of analysis and physical model of excitation (amplification) of magnetoplasma oscillations (helicons) by fluxes of charged particles (electrons) in the presence of a constant magnetic field. This model is based on the Cherenkov mechanism for converting kinetic energy of particles into the energy of natural electromagnetic oscillations of solid-state (semiconductor) structures under resonance conditions when the particle velocities coincide with phase velocities of oscillations. The aim here is to justify the formulation of theoretical studies basing on the proposed physical model of generation (amplification) of electromagnetic oscillations (emergence of oscillation instabilities, i.e., exponential growth of their amplitude). We define parameters intervals for the external magnetic field, particle fluxes and types of semiconductor structures which this physical model is applied to. We perform theoretical study of the influence charged particle fluxes have on waveguide characteristics of semiconductor structures. The study justifies the possibility of generation and amplification of magnetoplasma oscillations in the submillimeter range. Our objectives are theoretical studies of the interaction of moving charges with electromagnetic oscillations of a semiconductor structure under conditions of Cherenkov radiation. The methods used are the method of successive approximations for solving the dispersion equations for a system of charged particle flux - semiconductor structure within the framework of hydrodynamic approach. The following results are obtained: Theoretical studies of the functioning of semiconductor components of electrical radio equipment in the presence of charged particle fluxes have been carried out. It is shown that the effect of the particle flux is characterized by the emergence of oscillation instabilities in the semiconductor structure. We have determined one of the mechanisms for the excitation of magnetoplasma oscillations based on the interaction of moving charges with the intrinsic fields of the structures that constitute a semiconductor unit. Such equipment failures occur under conditions of Cherenkov radiation. We have shown that this interaction leads to appearance of a mode of oscillation generation. The results of a comparative analysis of the data obtained in this work make it possible to use the proposed physical model to determine the criteria for the occurrence and development of instabilities of magnetoplasma oscillations. Conclusions. The results obtained in this work can be used in the development of active microwave range devices (amplifiers, generators and transducers of electromagnetic oscillations of the millimeter and submillimeter bands). The comparative analysis of quantitative estimates of the growth rates of oscillation instabilities, depending on the spatial configuration of the acting field (when induced current is parallel to the structure boundary), carried out in this work, provides a solution to the problem of optimizing the operating characteristics of active microwave devices.
Features of the development of startups in the IT industry
(ScientificWorld-NetAkhatAV, 2023) Kapiton, Alla; Skakalina, Olena; Sas, Nataliia; Mostova, Anastasiia; Sokol, Halyna
The article is designed to analyze the problem of developing startups in the IT industry. As a result of the research, it was determined that during the constant growth of demand for modern software development, a large number of various startups are reg.
Information and analytical support of the education quality management system
(Полтавський національний технічний університет ім. Юрія Кондратюка, 2023) Baranenko, R.; Sokol, H.; Pustovoitov, P.; Zakharov, R.
The article analyzes the problem of informational and analytical provision of the education quality management system. The purpose of the article is to determine the role of modern information technologies in the process of improvement and modernization of the educational system. The components of the information system of quality management, which is defined as a set of interconnected or interacting elements of the organization for the development of policies and goals, as well as processes for achieving goals in the field of education quality, have been studied. It is proven that the formalized information system of education quality management creates a basis for planning, implementation, monitoring and improvement of education quality management activities.
Information system for quality assurance of education
(Полтавський національний технічний університет ім. Юрія Кондратюка, 2023) Baranenko, R.; Tyshсhenko, D.; Franchuk, T.; Sokol, H.
The article analyzes the problem of developing and implementing an information system for quality assurance of higher education. The purpose of the article is to research modern methodological, technical and software tools used in the process of developing and implementing an information system for quality assurance of higher education. The peculiarities of the development of the announced information system were analyzed, on the basis of which the requirements for the design of the information system were determined, the possibilities of modification and development of the information system for ensuring the quality of education were investigated, and ways of its improvement were proposed.
Knowledge bases of intelligent systems
(2023) Nikitina, L. O.
This tutorial gives an introduction to key concepts in Knowledge Based Engineering. The tutorial examines issues related to the organization and construction of knowledge base, which is a component of intelligent system. The place of the knowledge base in the intelligent computer system is explained. Features of collection, storage, search and issuance of knowledge are highlighted. The process of building and maintaining intelligent problem-solving systems that use (symbolic) AI methods is presented. The topics include knowledge representation and reasoning, knowledge acquisition, knowledge synthesis and knowledge evolution. The material of this tutorial is recommended for students majoring in "Computer Science".
Mathematical model of server requests intensity description
(Національний технічний університет "Харківський політехнічний інститут", 2020) Pustovoitov, Pavlo; Kostyk, Kateryna; Kompaniiets, Volodimir; Voronets, Vitalii; Haidar, Hasan
The paper is devoted to the mathematical model development of non-stationary flow of requests from clients to the database in order to modulate the quality of service. The mathematical model of the queries number fluctuations to the database has the form of a regression equation and allows more accurate modeling of the connections pool size in the servlet. Connection pool is a pattern that helps to reduce responding time for queries to databases. To another hand the extra used memory wasting server resources. The task of calculating the optimal connection pool size could be solved by verity of mathematical apparatuses that demand information about intensity of stationary incoming queries flow. It is known, that real incoming queries flow is non-stationary. In the paper was suggested mathematical model of flow intensity fluctuations with daily and hourly harmonic vibrations. Statistics analyses of model adequacy was made, homogeneity of variances is checked, the significance of the coefficients of the regression equation was estimated. The obtained mathematical model describes fluctuations in the intensity of clients' requests to the servlet during the week. The mathematical model can be used to predict the load on the server or to build a simulation model of the query service system. The adequacy of the model is checked, the homogeneity of variances is checked, the significance of the coefficients of the regression equation is estimated, the adequacy of the regression equation is checked, the analysis of the autocorrelation of the residues is carried out. The results obtained in the article give further development for modeling process technologies in the field of information systems and can be used to calculate the load on the server with a non-stationary flow of requests from clients to the database.
Method of building Web-communication applications for smart things integration in the Internet of things
(Національний технічний університет "Харківський політехнічний інститут", 2018) Tkachenko, V. А.; Steopin, D. O.
Method of wireless transmission of digital information on the basis of ultra-widesignals
(Національний технічний університет "Харківський політехнічний інститут", 2019) Serkov, Aleksandr; Trubchaninova, Karina; Mezitis, Mareks
The subject of the study are the organization of wireless transmission of digital information based on ultra-wideband signals. The goalis the development of models and methods for organizing broadband wireless communications operating in difficult interference environments. The taskis to ensure the stable and safe operation of communication systems. The methodology is based on the method of generating ultra-wideband digital signals and the method of extracting ultra-wideband information signals in the communication channel with interference. The methods used: methods of analytical, simulation and inverse Fourier transform. The following results are obtained. A technique has been developed for wireless transmission of digital information based on ultra-wideband signals, which includes a method for generating ultra-wideband information signals with code spectral modulation and a method for extracting information signals in a communication channel with interference. An assessment of the effect of interference onthe quality of the information being restored is performed. A special class of intra-system interference has been identified, which appears due to the multiplicity of delays in the information bit stream T0or T1. It is shown that their appearance leads to an increase in the bit error when extracting information signals in the communication channel. A mechanism is proposed foreliminating these errors by setting the multiple delays T0 and T1 when generating ultra-wideband information signals. Conclusions. The use of communication channels with an ultra-wide frequency band makes it possible to simultaneously implement a set of requirements for the electromagnetic compatibility of telecommunication systems, high-speed transmission of information with high noise immunity with respect to external interference.
Multidimensional signals compression algorithm development using wavelet transforms
(Міжнародний науково-технічний університет ім. академіка Юрія Бугая, 2021) Sokol, Halyna; Kulhavij, Artem; Tur, Serhii; Teleshun, Dmytro
The paper considers algorithms for compressing multidimensional signals using wavelet transforms, aimed at increasing the degree of information compression, compared with existing compression methods. Software for compressing multidimensional signals has been developed and the general capabilities of a software product that allows image compression using wavelet transforms are presented.