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Papers by Bohdan Yavorskyy

Research paper thumbnail of Method for the development of subsystems of space information visualization

Kosmìčna nauka ì tehnologìâ, 1998

A new approach based on the energy concept in the theory of signals is proposed for the developme... more A new approach based on the energy concept in the theory of signals is proposed for the development of hardware and software for the visualization of space information. The authors present some results obtained from the ground-based on-line observations of characteristics of electromagnetic fields.

Research paper thumbnail of Methods and means of computer tomography reconstructive

Методи та засоби комп’ютерної реконструктивної томоґрафії: , 2010

Навчальний посібник, гриф надано 22.07.2009, лист №1/ІІ-5894 Міносвіти та науки УкраїниНаведено к... more Навчальний посібник, гриф надано 22.07.2009, лист №1/ІІ-5894 Міносвіти та науки УкраїниНаведено концептуальні засади, постановку та методи розв’язання задачі Х-променевої комп’ютерної томоґрафії — реконструкції та візуалізації розподілу речовини по площині перерізу біооб'єкту за експериментально отриманим радонівською проекцією цього розподілу. Викладено математичний, фізичний та прикладний аспекти комп’ютерної томоґрафії, зокрема, проблеми, що виникають при розв’язуванні основної задачі комп’ютерної томографії та методи їх подолання, орієнтовані на використання обчислювальних засобів. Розрахований на студентів вищих навчальних закладів що навчаються за спеціальністю “Біотехнічні та медичні апарати і системи” Conceptual framework, formulation and methods of solution of the problem of X-ray computed tomography - reconstruction and visualization of the distribution of substances in biological objects by planes experimentally obtained by radon projection of this distribution. The a...

Research paper thumbnail of ERG-система для оцінки ризику нейротоксичності

Research paper thumbnail of Converter angle-code

Преобразование угла поворота вала сельсина в цифровой код. Условия эксплуатации группа 11 ГОСТ 97... more Преобразование угла поворота вала сельсина в цифровой код. Условия эксплуатации группа 11 ГОСТ 9763-67.Перетворення кута повороту вала сельсина в цифровий код. Умови експлуатації група 11 ГОСТ 9763-67

Research paper thumbnail of Математичні основи радіоелектроніки (Частина 1)

Research paper thumbnail of Determination of Parameters of Heart Rate Variability by a Filter Method

2006 International Conference - Modern Problems of Radio Engineering, Telecommunications, and Computer Science, 2006

ABSTRACT In this paper the problem of Halter monitoring of heart rate variability (HRV) and the f... more ABSTRACT In this paper the problem of Halter monitoring of heart rate variability (HRV) and the filter method of determination of parameters of HRV on a base its mathematical model as periodically correlated random process (PCRP) are considered. Structure of digital filter and method of its parameters determination are adduced.

Research paper thumbnail of Probability Integral Parameters Identification at Heart Rate Variability Type Detection by Neyman - Pearson Criterion

2006 International Conference - Modern Problems of Radio Engineering, Telecommunications, and Computer Science, 2006

The probability integral parameters at heart rate variability type detection by Neyman-Pearson cr... more The probability integral parameters at heart rate variability type detection by Neyman-Pearson criterion are identified in this paper. A method of statistical decision-making is adapted to computing model of the mathematical software MATLAB.

Research paper thumbnail of A high-frequency concentration meter with a capacitance transducer

Concentration measurement on solution is best done by methods not involving contacts [1, 2]; capa... more Concentration measurement on solution is best done by methods not involving contacts [1, 2]; capacitance transducers can be used for the purpose [1], but these have various disadvantages inherent in vacuum-tube circuits [3]. These disadvantages prevent one from using such devices in control and monitoring systems, especially when one needs to transfer from near stabilization to process optimization [2].

Research paper thumbnail of Representation of Quantum Signal Simulating

2021 IEEE 4th International Conference on Advanced Information and Communication Technologies (AICT), 2021

The Newton’s laws had been developed on basis experiments with nature signals, and by hand comput... more The Newton’s laws had been developed on basis experiments with nature signals, and by hand computation for processing of these signals. The signal carries the code of data. The carrier is a wave - the process of transfer in space and time (physical space) of the code. Then the parameters of this transfer determines the state of the signals in time and space. The design of quantum communication systems, information technology, etc. modeling of quantum signals is a complex problem of representation of the carrier, the signal code, and their quantum states. Quantum computing, and explaining on resolving of application tasks (RSA, FFT algorithm, quantum circuits, etc.) in physical the scales theories and practices (in mechanics and quantum mechanics) are different in technics, algorithmic, and the simulation. All of these significantly does complexity of the design of quantum communication systems. This paper discusses the representation of a quantum signal as its general relationship w...

Research paper thumbnail of Reconstruction of Algorithms for Spread Spectrum Signals Detection into a Frame of the Inductive Modeling Method

An approach for development a high performance algorithm of spread spectrum signal detection is e... more An approach for development a high performance algorithm of spread spectrum signal detection is examined. A preliminary specification of detection tasks for a spectral description of signals is considered. As an example of detection a deterministic frequency hopped signal being in a mixture with a periodically correlated noise of a wide frequency band ADC is given. Methods of a spectrum analyzing of the mixture is discussed. Optimization of parameters of algorithms in the methods of spectral analyses for detection of spread spectrum signals is reconstructed as the inductive modeling method of handling of these parameters.

Research paper thumbnail of Determination of changes in rectangular pulse duration by using shock excitation loop

Research paper thumbnail of Instrument for determining the difference between light fluxes

Research paper thumbnail of Load-current measurements on power supplies

Research paper thumbnail of Provide of confidence for mobile Holter monitoring of heart rhythm variability

2009 10th International Conference - The Experience of Designing and Application of CAD Systems in Microelectronics, 2009

The mathematical model of distortions in a communication channel in systems for remote and mobile... more The mathematical model of distortions in a communication channel in systems for remote and mobile Holter monitoring of the human heart rhythmic variability is established. The method of an optimal filtering of the received signal is developed. A characteristic of optimal filtration of the received signal and family of characteristics of confidence of received signal versus a ratio of powers of the signal to the distortion at different probabilities of fault are obtained.

Research paper thumbnail of Inner Product Determining in Spread Spectrum Signals Representation and Detection

Modern Problems of Radio Engineering, Telecommunications and Computer Science, International Conference, 2006

The given work is devoted for developing based on a reproducing kernel Hilbert space (RKHS) metho... more The given work is devoted for developing based on a reproducing kernel Hilbert space (RKHS) methodics to the rigged Hilbert space (RHS) obtained from a Hilbert space over Hilbert Space (HSOHS). Are obtained an analog to digital conversion (ADC) of a signal with the spectrum spreaded in the wide band representation and accuracy inner product. Furthermore, we apply this technique

Research paper thumbnail of УСТРОЙСТВО ВОЗБУЖДЕНИЯ СЕТЧАТКИ ГЛАЗА ДЛЯ ФОТОННОЙ ЭЛЕКТРОРЕТИНОГРАФИИ

Аннотация-Разработаны принципы построения светодиодного устройства управления возбуждением сетчат... more Аннотация-Разработаны принципы построения светодиодного устройства управления возбуждением сетчатки глаза во время фотонной ретинографии. Получены электриомагнитные поля оптического диапазона очень низкой интенсивности. Исследованы возможности интерактивного и автоматизированного управления интенсивностью, частотой и координатами главного направления светодиодного излучения.

Research paper thumbnail of Device for excitation of eye retina for photon electroretinography

Principles of construction of the light-emitting diode device for control of excitation of a reti... more Principles of construction of the light-emitting diode device for control of excitation of a retina of an eye during photon retinography are developed. Opportunities for interactive and automation control of intensity, frequency and coordinates of main direction of light-emitting diode radiation are investigated.

Research paper thumbnail of Scientific Paradigms for Computer Aided Signal Design

In this paper is presented paradigms for developing a message representation as main background f... more In this paper is presented paradigms for developing a message representation as main background for computer aided design of optimal radiosignal.

Research paper thumbnail of Mathematical modeling of led radiation in the system of medical diagnostics

The use in the medical diagnosis light irritation with intensity lower than standard level leads ... more The use in the medical diagnosis light irritation with intensity lower than standard level leads to decreasing invasiveness and increasing resolution of bioobject response. This improves the quality of diagnosis the state of bioobjects by the results of such active electrophysiological study. The intensity of light irritation recently determined from properties diagram of radiation and place of location of its source. For transfer of energy through a free space, layers of biological media on to the object of irradiation choose the standard levels of intensity. That helps in order to increasing of likelyhood the diagnostic decision about the state of bioobject by result analysis of its response on to irritation. In low intensity irritation, the biomedia influences on the transfer of energy and emerges requirement to control the intensity of irradiation on the surface of the target object. The propagation of light beams in biological media are investigated in ophthalmology, astronomy,...

Research paper thumbnail of Modular High-Frequency MagAmp DC-DC Power Converter

2019 9th International Conference on Advanced Computer Information Technologies (ACIT), 2019

The paper describes a new approach to high-efficient high-frequency modular power converter desig... more The paper describes a new approach to high-efficient high-frequency modular power converter design for uninterruptable power supply systems for specialized computer systems. The experimental modular power converter based on high-frequency magnetic amplifiers was built. The results of its experimental research are provided.

Research paper thumbnail of Method for the development of subsystems of space information visualization

Kosmìčna nauka ì tehnologìâ, 1998

A new approach based on the energy concept in the theory of signals is proposed for the developme... more A new approach based on the energy concept in the theory of signals is proposed for the development of hardware and software for the visualization of space information. The authors present some results obtained from the ground-based on-line observations of characteristics of electromagnetic fields.

Research paper thumbnail of Methods and means of computer tomography reconstructive

Методи та засоби комп’ютерної реконструктивної томоґрафії: , 2010

Навчальний посібник, гриф надано 22.07.2009, лист №1/ІІ-5894 Міносвіти та науки УкраїниНаведено к... more Навчальний посібник, гриф надано 22.07.2009, лист №1/ІІ-5894 Міносвіти та науки УкраїниНаведено концептуальні засади, постановку та методи розв’язання задачі Х-променевої комп’ютерної томоґрафії — реконструкції та візуалізації розподілу речовини по площині перерізу біооб'єкту за експериментально отриманим радонівською проекцією цього розподілу. Викладено математичний, фізичний та прикладний аспекти комп’ютерної томоґрафії, зокрема, проблеми, що виникають при розв’язуванні основної задачі комп’ютерної томографії та методи їх подолання, орієнтовані на використання обчислювальних засобів. Розрахований на студентів вищих навчальних закладів що навчаються за спеціальністю “Біотехнічні та медичні апарати і системи” Conceptual framework, formulation and methods of solution of the problem of X-ray computed tomography - reconstruction and visualization of the distribution of substances in biological objects by planes experimentally obtained by radon projection of this distribution. The a...

Research paper thumbnail of ERG-система для оцінки ризику нейротоксичності

Research paper thumbnail of Converter angle-code

Преобразование угла поворота вала сельсина в цифровой код. Условия эксплуатации группа 11 ГОСТ 97... more Преобразование угла поворота вала сельсина в цифровой код. Условия эксплуатации группа 11 ГОСТ 9763-67.Перетворення кута повороту вала сельсина в цифровий код. Умови експлуатації група 11 ГОСТ 9763-67

Research paper thumbnail of Математичні основи радіоелектроніки (Частина 1)

Research paper thumbnail of Determination of Parameters of Heart Rate Variability by a Filter Method

2006 International Conference - Modern Problems of Radio Engineering, Telecommunications, and Computer Science, 2006

ABSTRACT In this paper the problem of Halter monitoring of heart rate variability (HRV) and the f... more ABSTRACT In this paper the problem of Halter monitoring of heart rate variability (HRV) and the filter method of determination of parameters of HRV on a base its mathematical model as periodically correlated random process (PCRP) are considered. Structure of digital filter and method of its parameters determination are adduced.

Research paper thumbnail of Probability Integral Parameters Identification at Heart Rate Variability Type Detection by Neyman - Pearson Criterion

2006 International Conference - Modern Problems of Radio Engineering, Telecommunications, and Computer Science, 2006

The probability integral parameters at heart rate variability type detection by Neyman-Pearson cr... more The probability integral parameters at heart rate variability type detection by Neyman-Pearson criterion are identified in this paper. A method of statistical decision-making is adapted to computing model of the mathematical software MATLAB.

Research paper thumbnail of A high-frequency concentration meter with a capacitance transducer

Concentration measurement on solution is best done by methods not involving contacts [1, 2]; capa... more Concentration measurement on solution is best done by methods not involving contacts [1, 2]; capacitance transducers can be used for the purpose [1], but these have various disadvantages inherent in vacuum-tube circuits [3]. These disadvantages prevent one from using such devices in control and monitoring systems, especially when one needs to transfer from near stabilization to process optimization [2].

Research paper thumbnail of Representation of Quantum Signal Simulating

2021 IEEE 4th International Conference on Advanced Information and Communication Technologies (AICT), 2021

The Newton’s laws had been developed on basis experiments with nature signals, and by hand comput... more The Newton’s laws had been developed on basis experiments with nature signals, and by hand computation for processing of these signals. The signal carries the code of data. The carrier is a wave - the process of transfer in space and time (physical space) of the code. Then the parameters of this transfer determines the state of the signals in time and space. The design of quantum communication systems, information technology, etc. modeling of quantum signals is a complex problem of representation of the carrier, the signal code, and their quantum states. Quantum computing, and explaining on resolving of application tasks (RSA, FFT algorithm, quantum circuits, etc.) in physical the scales theories and practices (in mechanics and quantum mechanics) are different in technics, algorithmic, and the simulation. All of these significantly does complexity of the design of quantum communication systems. This paper discusses the representation of a quantum signal as its general relationship w...

Research paper thumbnail of Reconstruction of Algorithms for Spread Spectrum Signals Detection into a Frame of the Inductive Modeling Method

An approach for development a high performance algorithm of spread spectrum signal detection is e... more An approach for development a high performance algorithm of spread spectrum signal detection is examined. A preliminary specification of detection tasks for a spectral description of signals is considered. As an example of detection a deterministic frequency hopped signal being in a mixture with a periodically correlated noise of a wide frequency band ADC is given. Methods of a spectrum analyzing of the mixture is discussed. Optimization of parameters of algorithms in the methods of spectral analyses for detection of spread spectrum signals is reconstructed as the inductive modeling method of handling of these parameters.

Research paper thumbnail of Determination of changes in rectangular pulse duration by using shock excitation loop

Research paper thumbnail of Instrument for determining the difference between light fluxes

Research paper thumbnail of Load-current measurements on power supplies

Research paper thumbnail of Provide of confidence for mobile Holter monitoring of heart rhythm variability

2009 10th International Conference - The Experience of Designing and Application of CAD Systems in Microelectronics, 2009

The mathematical model of distortions in a communication channel in systems for remote and mobile... more The mathematical model of distortions in a communication channel in systems for remote and mobile Holter monitoring of the human heart rhythmic variability is established. The method of an optimal filtering of the received signal is developed. A characteristic of optimal filtration of the received signal and family of characteristics of confidence of received signal versus a ratio of powers of the signal to the distortion at different probabilities of fault are obtained.

Research paper thumbnail of Inner Product Determining in Spread Spectrum Signals Representation and Detection

Modern Problems of Radio Engineering, Telecommunications and Computer Science, International Conference, 2006

The given work is devoted for developing based on a reproducing kernel Hilbert space (RKHS) metho... more The given work is devoted for developing based on a reproducing kernel Hilbert space (RKHS) methodics to the rigged Hilbert space (RHS) obtained from a Hilbert space over Hilbert Space (HSOHS). Are obtained an analog to digital conversion (ADC) of a signal with the spectrum spreaded in the wide band representation and accuracy inner product. Furthermore, we apply this technique

Research paper thumbnail of УСТРОЙСТВО ВОЗБУЖДЕНИЯ СЕТЧАТКИ ГЛАЗА ДЛЯ ФОТОННОЙ ЭЛЕКТРОРЕТИНОГРАФИИ

Аннотация-Разработаны принципы построения светодиодного устройства управления возбуждением сетчат... more Аннотация-Разработаны принципы построения светодиодного устройства управления возбуждением сетчатки глаза во время фотонной ретинографии. Получены электриомагнитные поля оптического диапазона очень низкой интенсивности. Исследованы возможности интерактивного и автоматизированного управления интенсивностью, частотой и координатами главного направления светодиодного излучения.

Research paper thumbnail of Device for excitation of eye retina for photon electroretinography

Principles of construction of the light-emitting diode device for control of excitation of a reti... more Principles of construction of the light-emitting diode device for control of excitation of a retina of an eye during photon retinography are developed. Opportunities for interactive and automation control of intensity, frequency and coordinates of main direction of light-emitting diode radiation are investigated.

Research paper thumbnail of Scientific Paradigms for Computer Aided Signal Design

In this paper is presented paradigms for developing a message representation as main background f... more In this paper is presented paradigms for developing a message representation as main background for computer aided design of optimal radiosignal.

Research paper thumbnail of Mathematical modeling of led radiation in the system of medical diagnostics

The use in the medical diagnosis light irritation with intensity lower than standard level leads ... more The use in the medical diagnosis light irritation with intensity lower than standard level leads to decreasing invasiveness and increasing resolution of bioobject response. This improves the quality of diagnosis the state of bioobjects by the results of such active electrophysiological study. The intensity of light irritation recently determined from properties diagram of radiation and place of location of its source. For transfer of energy through a free space, layers of biological media on to the object of irradiation choose the standard levels of intensity. That helps in order to increasing of likelyhood the diagnostic decision about the state of bioobject by result analysis of its response on to irritation. In low intensity irritation, the biomedia influences on the transfer of energy and emerges requirement to control the intensity of irradiation on the surface of the target object. The propagation of light beams in biological media are investigated in ophthalmology, astronomy,...

Research paper thumbnail of Modular High-Frequency MagAmp DC-DC Power Converter

2019 9th International Conference on Advanced Computer Information Technologies (ACIT), 2019

The paper describes a new approach to high-efficient high-frequency modular power converter desig... more The paper describes a new approach to high-efficient high-frequency modular power converter design for uninterruptable power supply systems for specialized computer systems. The experimental modular power converter based on high-frequency magnetic amplifiers was built. The results of its experimental research are provided.