Pub Date : 2022-10-26DOI: 10.31649/1681-7893-2021-42-2-73-83
M. Dyvak, V. Manzhula, A. Melnyk, V. Tymchyshyn
The article proposes an approach to constructing a system of complex and uninterrupted monitoring of harmful emissions of motor vehicles into the air. The architecture of the environmental monitoring system for measuring and forecasting the distribution of pollutant concentrations in motor vehicle exhaust gases, among which mainly CO, SO₂, NO₂, and СО₂, is presented. The mobile information and measurement complex Sniffer4D Hyper-local Air Quality Analyzer and a charging station based on solar batteries are used as the hardware. For modeling and forecasting the distribution of concentrations of harmful emissions, mathematical models of the dynamics of the distribution of concentrations of pollutants due to harmful emissions in the exhaust gases of motor vehicles are proposed in the form of differential equations that are analogs of differential equations in partial derivatives, as models of turbulent diffusion and interval models of the distribution of the background level of pollution concentration in the form of nonlinear algebraic equations. Implemented software for data collection, processing (model learning and prediction), and visualization.
{"title":"A System for Monitoring Air Pollution by Motor Vehicles Based on an Autonomous Air-Mobile Measuring Complex","authors":"M. Dyvak, V. Manzhula, A. Melnyk, V. Tymchyshyn","doi":"10.31649/1681-7893-2021-42-2-73-83","DOIUrl":"https://doi.org/10.31649/1681-7893-2021-42-2-73-83","url":null,"abstract":"The article proposes an approach to constructing a system of complex and uninterrupted monitoring of harmful emissions of motor vehicles into the air. The architecture of the environmental monitoring system for measuring and forecasting the distribution of pollutant concentrations in motor vehicle exhaust gases, among which mainly CO, SO₂, NO₂, and СО₂, is presented. The mobile information and measurement complex Sniffer4D Hyper-local Air Quality Analyzer and a charging station based on solar batteries are used as the hardware. For modeling and forecasting the distribution of concentrations of harmful emissions, mathematical models of the dynamics of the distribution of concentrations of pollutants due to harmful emissions in the exhaust gases of motor vehicles are proposed in the form of differential equations that are analogs of differential equations in partial derivatives, as models of turbulent diffusion and interval models of the distribution of the background level of pollution concentration in the form of nonlinear algebraic equations. Implemented software for data collection, processing (model learning and prediction), and visualization.","PeriodicalId":142101,"journal":{"name":"Optoelectronic information-power technologies","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116288334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-26DOI: 10.31649/1681-7893-2021-41-1-84-95
Yaroslav I. Yaroslavskyy, S. Pavlov, S. Kostyuk, S. Tymchyk
The article draws a conclusion using the biblio-semantic approach regarding theperspective of creating optoelectronic networks for the exchange of telemedical data, formulateda range of unsolved problems and identified the main directions of their development. Thedevelopment based on the model of the telemedical data transmission information channel of thefiber-optic communication channel for the exchange of telemedical information with theadditional introduction to its structure of optical amplifiers with automatic gain control(AMP) and the unit of automatic control and diagnostics of the optical cable provided remotecontrol with state determination cable fibers; automatic diagnosis of the condition of the cablewith an accurate determination of the location and nature of the damage, linking of reflectors tothe geographical map of the area and analysis of changes in the parameters of the VOKZ overtime, which ultimately increased the reliability and improved the quality of the transmission ofbiomedical information. automatic . The development of a fiber-optic telemedicine network forthe exchange of operational results of telemedical diagnostics and health monitoring of patientsin remote areas of the Vinnytsia region through fiber-optic communication channels will in thefuture ensure its adaptation to the DICOM standard, information support for decision-making,and a flexible work management system network in compliance with the requirements for theprotection of personal data of patients.
{"title":"Fiber-optical technologies for information (internet, intranet etc.) and energy networks","authors":"Yaroslav I. Yaroslavskyy, S. Pavlov, S. Kostyuk, S. Tymchyk","doi":"10.31649/1681-7893-2021-41-1-84-95","DOIUrl":"https://doi.org/10.31649/1681-7893-2021-41-1-84-95","url":null,"abstract":"The article draws a conclusion using the biblio-semantic approach regarding theperspective of creating optoelectronic networks for the exchange of telemedical data, formulateda range of unsolved problems and identified the main directions of their development. Thedevelopment based on the model of the telemedical data transmission information channel of thefiber-optic communication channel for the exchange of telemedical information with theadditional introduction to its structure of optical amplifiers with automatic gain control(AMP) and the unit of automatic control and diagnostics of the optical cable provided remotecontrol with state determination cable fibers; automatic diagnosis of the condition of the cablewith an accurate determination of the location and nature of the damage, linking of reflectors tothe geographical map of the area and analysis of changes in the parameters of the VOKZ overtime, which ultimately increased the reliability and improved the quality of the transmission ofbiomedical information. automatic . The development of a fiber-optic telemedicine network forthe exchange of operational results of telemedical diagnostics and health monitoring of patientsin remote areas of the Vinnytsia region through fiber-optic communication channels will in thefuture ensure its adaptation to the DICOM standard, information support for decision-making,and a flexible work management system network in compliance with the requirements for theprotection of personal data of patients.","PeriodicalId":142101,"journal":{"name":"Optoelectronic information-power technologies","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127045504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-26DOI: 10.31649/1681-7893-2021-42-2-44-52
N. Zabolotna, V. Sholota, V. Zagoruiko
The system of polarization mapping of biological layers has been improved due to the multi-parameter analysis of coordinate distributions of azimuths, ellipticities and phase shifts at the points of laser images of biological layers. On the basis of statistical and correlational analysis of measured maps of biological layers, informative signs of diagnosis were determined. Automatic binary classification of samples of biological layers with increased reliability was performed according to informative features.
{"title":"System of Multi-Parametric Polarization-Phase Mapping of Biological Layers with Binary Classification","authors":"N. Zabolotna, V. Sholota, V. Zagoruiko","doi":"10.31649/1681-7893-2021-42-2-44-52","DOIUrl":"https://doi.org/10.31649/1681-7893-2021-42-2-44-52","url":null,"abstract":"The system of polarization mapping of biological layers has been improved due to the multi-parameter analysis of coordinate distributions of azimuths, ellipticities and phase shifts at the points of laser images of biological layers. On the basis of statistical and correlational analysis of measured maps of biological layers, informative signs of diagnosis were determined. Automatic binary classification of samples of biological layers with increased reliability was performed according to informative features.","PeriodicalId":142101,"journal":{"name":"Optoelectronic information-power technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129565758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-26DOI: 10.31649/1681-7893-2021-42-2-84-95
Yaroslav I. Yaroslavskyy, S. Pavlov, S. Kostyuk, S. Tymchyk
The article draws a conclusion using the biblio-semantic approach regarding the perspective of creating optoelectronic networks for the exchange of telemedical data, formulated a range of unsolved problems and identified the main directions of their development. The development based on the model of the telemedical data transmission information channel of the fiber-optic communication channel for the exchange of telemedical information with the additional introduction to its structure of optical amplifiers with automatic gain control (AMP) and the unit of automatic control and diagnostics of the optical cable provided remote control with state determination cable fibers; automatic diagnosis of the condition of the cable with an accurate determination of the location and nature of the damage, linking of reflectors to the geographical map of the area and analysis of changes in the parameters of the VOKZ over time, which ultimately increased the reliability and improved the quality of the transmission of biomedical information. automatic . The development of a fiber-optic telemedicine network for the exchange of operational results of telemedical diagnostics and health monitoring of patients in remote areas of the Vinnytsia region through fiber-optic communication channels will in the future ensure its adaptation to the DICOM standard, information support for decision-making, and a flexible work management system network in compliance with the requirements for the protection of personal data of patients.
{"title":"Principles of Building Telemedicine Networks and Systems Based on Fiber-Optic Communication Channels in Vinnytsia Region","authors":"Yaroslav I. Yaroslavskyy, S. Pavlov, S. Kostyuk, S. Tymchyk","doi":"10.31649/1681-7893-2021-42-2-84-95","DOIUrl":"https://doi.org/10.31649/1681-7893-2021-42-2-84-95","url":null,"abstract":"The article draws a conclusion using the biblio-semantic approach regarding the perspective of creating optoelectronic networks for the exchange of telemedical data, formulated a range of unsolved problems and identified the main directions of their development. The development based on the model of the telemedical data transmission information channel of the fiber-optic communication channel for the exchange of telemedical information with the additional introduction to its structure of optical amplifiers with automatic gain control (AMP) and the unit of automatic control and diagnostics of the optical cable provided remote control with state determination cable fibers; automatic diagnosis of the condition of the cable with an accurate determination of the location and nature of the damage, linking of reflectors to the geographical map of the area and analysis of changes in the parameters of the VOKZ over time, which ultimately increased the reliability and improved the quality of the transmission of biomedical information. automatic . The development of a fiber-optic telemedicine network for the exchange of operational results of telemedical diagnostics and health monitoring of patients in remote areas of the Vinnytsia region through fiber-optic communication channels will in the future ensure its adaptation to the DICOM standard, information support for decision-making, and a flexible work management system network in compliance with the requirements for the protection of personal data of patients.","PeriodicalId":142101,"journal":{"name":"Optoelectronic information-power technologies","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124568982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-26DOI: 10.31649/1681-7893-2021-42-2-53-65
N. Babyuk, S. Pavlov, P. Kolisnyk, Yang Longyin
An analysis was carried out, which showed that the task of creating a system for evaluating biomedical images of pathologies of the vessels of the human eye is relevant and needs to be solved, since the existing methods and systems of evaluation, as well as the existing methods of processing biomedical images do not meet the modern requirements for such systems in terms of accuracy , the reliability of processing biomedical images, which leads to the occurrence of errors in the diagnosis in ophthalmological studies. The results of the comparison of the effectiveness of the Kirsch, Sobel, Roberts, Wallace, SUSAN algorithms for processing biomedical images based on the set of information diagnostic features formed are the most informative for image segmentation, the algorithms based on Kirsch filtering and the nonlinear Sobel filter. A system has been developed for evaluating dynamic changes in biomedical images, which allows to evaluate the state of blood vessels and determine the conjunctival index based on the following indicators: the ratio of the diameters of arterioles and corresponding venules; caliber irregularities; meander windings; microaneurysms; glomeruli; reticular structures of vessels; changes in the number of functioning capillaries; arteriolo-venular anastomoses; hemorrhages; perivascular edema; sludge phenomena; microthrombi
{"title":"Peculiarities of Computer Analysis of Biomedical Images of Microcirculation of the Conjunctiva of the Eye","authors":"N. Babyuk, S. Pavlov, P. Kolisnyk, Yang Longyin","doi":"10.31649/1681-7893-2021-42-2-53-65","DOIUrl":"https://doi.org/10.31649/1681-7893-2021-42-2-53-65","url":null,"abstract":"An analysis was carried out, which showed that the task of creating a system for evaluating biomedical images of pathologies of the vessels of the human eye is relevant and needs to be solved, since the existing methods and systems of evaluation, as well as the existing methods of processing biomedical images do not meet the modern requirements for such systems in terms of accuracy , the reliability of processing biomedical images, which leads to the occurrence of errors in the diagnosis in ophthalmological studies. The results of the comparison of the effectiveness of the Kirsch, Sobel, Roberts, Wallace, SUSAN algorithms for processing biomedical images based on the set of information diagnostic features formed are the most informative for image segmentation, the algorithms based on Kirsch filtering and the nonlinear Sobel filter. A system has been developed for evaluating dynamic changes in biomedical images, which allows to evaluate the state of blood vessels and determine the conjunctival index based on the following indicators: the ratio of the diameters of arterioles and corresponding venules; caliber irregularities; meander windings; microaneurysms; glomeruli; reticular structures of vessels; changes in the number of functioning capillaries; arteriolo-venular anastomoses; hemorrhages; perivascular edema; sludge phenomena; microthrombi","PeriodicalId":142101,"journal":{"name":"Optoelectronic information-power technologies","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131699381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-26DOI: 10.31649/1681-7893-2021-42-2-66-72
A. Kulyk, O. Nikolsky, V. Revenok, V. Motygin
Creation of virtual medical devices in the NI Labview environment is a relevant andimportant task from a practical point of view. The paper examines the demonstration of NILabView capabilities for building virtual medical devices and, as an example, the construction ofan algorithm that allows clustering of ejaculate image fragments (spermatozoa) according totheir spectral features and conducting a partial morphological study of sperm. Video processingof the spermogram obtained from the electron microscope takes place in the frame stream. Thenumber of spermatozoa and their geometric parameters are determined on each frame.
{"title":"Virtual Medical Devices in the NI LABVIEW Environment","authors":"A. Kulyk, O. Nikolsky, V. Revenok, V. Motygin","doi":"10.31649/1681-7893-2021-42-2-66-72","DOIUrl":"https://doi.org/10.31649/1681-7893-2021-42-2-66-72","url":null,"abstract":"Creation of virtual medical devices in the NI Labview environment is a relevant andimportant task from a practical point of view. The paper examines the demonstration of NILabView capabilities for building virtual medical devices and, as an example, the construction ofan algorithm that allows clustering of ejaculate image fragments (spermatozoa) according totheir spectral features and conducting a partial morphological study of sperm. Video processingof the spermogram obtained from the electron microscope takes place in the frame stream. Thenumber of spermatozoa and their geometric parameters are determined on each frame.","PeriodicalId":142101,"journal":{"name":"Optoelectronic information-power technologies","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115406217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-24DOI: 10.31649/1681-7893-2021-42-2-5-11
D. Averin, V. Borovytsky, S. Tuzhanskyi
The article describes drone positioning systems that ensure reliable takeoff, landing and delivery of cargo without the use of digital cameras and their classification. This classification includes all combinations of sources and receivers of radiation that may be located both on the drone and on the landing or cargo delivery area. An analysis of the advantages and disadvantages of each system and recommendations for choosing the best drone positioning system.
{"title":"Local Positioning Systems for Drones without Usage of Digital Cameras","authors":"D. Averin, V. Borovytsky, S. Tuzhanskyi","doi":"10.31649/1681-7893-2021-42-2-5-11","DOIUrl":"https://doi.org/10.31649/1681-7893-2021-42-2-5-11","url":null,"abstract":"The article describes drone positioning systems that ensure reliable takeoff, landing and delivery of cargo without the use of digital cameras and their classification. This classification includes all combinations of sources and receivers of radiation that may be located both on the drone and on the landing or cargo delivery area. An analysis of the advantages and disadvantages of each system and recommendations for choosing the best drone positioning system.","PeriodicalId":142101,"journal":{"name":"Optoelectronic information-power technologies","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116681420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-24DOI: 10.31649/1681-7893-2021-42-2-21-32
V. Borovytsky, V. Antonenko
The article proposes a classification of facet systems of technical vision. According to this classification, all systems are divided into groups depending on the type of optical system, which can be represented as a combination of microlenses, optical fibers and an objective, and the type of photoreceptors - matrix, linear or single-element photoreceptor. The construction of facet systems was considered, an analysis of their advantages and disadvantages was performed, recommendations were formulated regarding the choice of a facet system of technical vision.
{"title":"Classification of Facet Systems of Technical Vision","authors":"V. Borovytsky, V. Antonenko","doi":"10.31649/1681-7893-2021-42-2-21-32","DOIUrl":"https://doi.org/10.31649/1681-7893-2021-42-2-21-32","url":null,"abstract":"The article proposes a classification of facet systems of technical vision. According to this classification, all systems are divided into groups depending on the type of optical system, which can be represented as a combination of microlenses, optical fibers and an objective, and the type of photoreceptors - matrix, linear or single-element photoreceptor. The construction of facet systems was considered, an analysis of their advantages and disadvantages was performed, recommendations were formulated regarding the choice of a facet system of technical vision.","PeriodicalId":142101,"journal":{"name":"Optoelectronic information-power technologies","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129570916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-24DOI: 10.31649/1681-7893-2021-42-2-12-20
S. Romanyuk, S. Pavlov, N. Titova, L. Koval
The article discusses the use of graphic images for rapid diagnosis and the construction of biomedical software. Diagnostic features of morphological analysis of images of the human face for plastic and reconstructive operations are determined. The use of 3D images for the diagnosis of genetic diseases is considered. Recommendations for the use of three-dimensional modeling in this field have been developed. The use of morphing of 3D images of the human face for diagnostic tasks is proposed. A method of analyzing the compliance of age-related changes in the child's development with established norms based on the use of image morphing is proposed, which makes it possible to increase the efficiency of express diagnosis. The main requirements for the construction of software analogs of biomedical devices using 3-D models are defined, which is the basis for the construction of computerized modern bimedical devices and systems.
{"title":"Usage of Graphic 3D Images of Faces for Express Diagnosis and Construction of Biomedical Devices","authors":"S. Romanyuk, S. Pavlov, N. Titova, L. Koval","doi":"10.31649/1681-7893-2021-42-2-12-20","DOIUrl":"https://doi.org/10.31649/1681-7893-2021-42-2-12-20","url":null,"abstract":"The article discusses the use of graphic images for rapid diagnosis and the construction of biomedical software. Diagnostic features of morphological analysis of images of the human face for plastic and reconstructive operations are determined. The use of 3D images for the diagnosis of genetic diseases is considered. Recommendations for the use of three-dimensional modeling in this field have been developed. The use of morphing of 3D images of the human face for diagnostic tasks is proposed. A method of analyzing the compliance of age-related changes in the child's development with established norms based on the use of image morphing is proposed, which makes it possible to increase the efficiency of express diagnosis. The main requirements for the construction of software analogs of biomedical devices using 3-D models are defined, which is the basis for the construction of computerized modern bimedical devices and systems.","PeriodicalId":142101,"journal":{"name":"Optoelectronic information-power technologies","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122887904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-24DOI: 10.31649/1681-7893-2021-42-2-33-43
Y. Nosova, Oleg Avrunin, N. N. Shushlyapina, Ibrahim Younouss Abdelhamid, Alofy Bander Aly Saed
The paper presents a comparative analysis of mathematical and full-scale models in determining the aerodynamic nose drag coefficient. The aim of the work is to assess the adequacy of mathematical and natural models in determining the aerodynamic nose drag coefficient to assess the possibilities of developing an approach for computer planning of rhinosurgical interventions based on the study of the geometric and functional characteristics of real personalized models of the internal structure of the upper respiratory tract according to the diagnostic data of computed tomography. According to the results of experimental tests of a full-scale model obtained by 3D printing, it is possible to calculate the value of the aerodynamic nose drag coefficient by obtaining the pressure drop values - total losses for the corresponding given air flow rates. The discrepancy between the values of the aerodynamic nose drag coefficients in this case did not exceed 15% and is explained by methodological errors associated with the approaches in calculating the aerodynamic model of the nasal cavity, in particular, the impossibility of taking into account all local disturbances and their mutual influence, and the properties of the plastic surface of the air channels of the full-scale model during experimental tests.
{"title":"Comparative Analysis of Mathematical and Natural Models in Determining the Coefficient of Aerodynamic Nose Drag","authors":"Y. Nosova, Oleg Avrunin, N. N. Shushlyapina, Ibrahim Younouss Abdelhamid, Alofy Bander Aly Saed","doi":"10.31649/1681-7893-2021-42-2-33-43","DOIUrl":"https://doi.org/10.31649/1681-7893-2021-42-2-33-43","url":null,"abstract":"The paper presents a comparative analysis of mathematical and full-scale models in determining the aerodynamic nose drag coefficient. The aim of the work is to assess the adequacy of mathematical and natural models in determining the aerodynamic nose drag coefficient to assess the possibilities of developing an approach for computer planning of rhinosurgical interventions based on the study of the geometric and functional characteristics of real personalized models of the internal structure of the upper respiratory tract according to the diagnostic data of computed tomography. According to the results of experimental tests of a full-scale model obtained by 3D printing, it is possible to calculate the value of the aerodynamic nose drag coefficient by obtaining the pressure drop values - total losses for the corresponding given air flow rates. The discrepancy between the values of the aerodynamic nose drag coefficients in this case did not exceed 15% and is explained by methodological errors associated with the approaches in calculating the aerodynamic model of the nasal cavity, in particular, the impossibility of taking into account all local disturbances and their mutual influence, and the properties of the plastic surface of the air channels of the full-scale model during experimental tests.","PeriodicalId":142101,"journal":{"name":"Optoelectronic information-power technologies","volume":"184 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123719823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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