Pub Date : 1900-01-01DOI: 10.25206/1813-8225-2021-179-74-79
V. Maystrenko, O. A. Bezrodnykh, R. A. Dorokhin
In this article based on the processing of statistical data from various electronic resources the most frequent types of threats to information security (UBI) for medical information systems (MIS) are identified and their classification is carried out. The issues of determining the actual UBI when creating MIS that process personal data using a specific technology of expert assessment are considered. The proposed methodology for determining actual threats to information security for MIS, in comparison with those used, eliminates subjective assessments that are a characteristic feature of traditional expert assessments. Its use also makes it possible to assess the relevance of information security threats for MIS that do not have qualified specialists in the field of information security in the staff of a medical institution, which is relevant for a large number of medical institutions. The authors investigate the practical possibilities of using the theory of fuzzy sets and fuzzy logic in determining the actual UBI for MIS for various purposes.
{"title":"Methodology for determining actual threats to information security in medical information system","authors":"V. Maystrenko, O. A. Bezrodnykh, R. A. Dorokhin","doi":"10.25206/1813-8225-2021-179-74-79","DOIUrl":"https://doi.org/10.25206/1813-8225-2021-179-74-79","url":null,"abstract":"In this article based on the processing of statistical data from various electronic resources the most frequent types of threats to information security (UBI) for medical information systems (MIS) are identified and their classification is carried out. The issues of determining the actual UBI when creating MIS that process personal data using a specific technology of expert assessment are considered. The proposed methodology for determining actual threats to information security for MIS, in comparison with those used, eliminates subjective assessments that are a characteristic feature of traditional expert assessments. Its use also makes it possible to assess the relevance of information security threats for MIS that do not have qualified specialists in the field of information security in the staff of a medical institution, which is relevant for a large number of medical institutions. The authors investigate the practical possibilities of using the theory of fuzzy sets and fuzzy logic in determining the actual UBI for MIS for various purposes.","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130269398","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 : 1900-01-01DOI: 10.25206/1813-8225-2021-180-33-40
I. V. Komarov, D. Polyakov, K. I. Nikitin
The paper simulates the electric field intensity picture in the cable with one and several defects. Modeling has shown that the presence of several closely spaced defects does not lead to an increase in the electric field intensity in comparison with one defect. On the basis of experimental studies, an analysis of defects' number influence on various parameters of partial discharges (PD) is performed. Artificial defects are created in the area of the XLPE-insulated cable termination. The following parameters of PD are measured: the magnitude of the apparent charge, the power (intensity) of partial discharges, the phase-resolved partial discharge (PRPD) patterns, the shape of PD signals. The analysis shows an increase in the number of defects does not affect the characteristics of partial discharges, despite the fact the defects are located in different sections of the cable with distributed parameters. Thus, it can be difficult to quantify defects during cable partial discharge measurements.
{"title":"Partial discharges characteristics study in XLPE cable insulation with multiple defects","authors":"I. V. Komarov, D. Polyakov, K. I. Nikitin","doi":"10.25206/1813-8225-2021-180-33-40","DOIUrl":"https://doi.org/10.25206/1813-8225-2021-180-33-40","url":null,"abstract":"The paper simulates the electric field intensity picture in the cable with one and several defects. Modeling has shown that the presence of several closely spaced defects does not lead to an increase in the electric field intensity in comparison with one defect. On the basis of experimental studies, an analysis of defects' number influence on various parameters of partial discharges (PD) is performed. Artificial defects are created in the area of the XLPE-insulated cable termination. The following parameters of PD are measured: the magnitude of the apparent charge, the power (intensity) of partial discharges, the phase-resolved partial discharge (PRPD) patterns, the shape of PD signals. The analysis shows an increase in the number of defects does not affect the characteristics of partial discharges, despite the fact the defects are located in different sections of the cable with distributed parameters. Thus, it can be difficult to quantify defects during cable partial discharge measurements.","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127834043","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 : 1900-01-01DOI: 10.25206/1813-8225-2019-167-34-38
I. Chernykh, E. Vasilev, E. Tkachenko, A. Lukin, D. A. Proshutinskiy, V. Valova, E. Savva
{"title":"Design of device for gas shielding of joint during friction stir welding","authors":"I. Chernykh, E. Vasilev, E. Tkachenko, A. Lukin, D. A. Proshutinskiy, V. Valova, E. Savva","doi":"10.25206/1813-8225-2019-167-34-38","DOIUrl":"https://doi.org/10.25206/1813-8225-2019-167-34-38","url":null,"abstract":"","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126913671","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 : 1900-01-01DOI: 10.25206/1813-8225-2022-182-86-92
P. M. Korusenko, S. N. Nesov, K. E. Ivlev
In this work, we carried out a comprehensive study of the morphology, chemical composition, electronic structure, and electrochemical characteristics of a nanocomposite based on carbon nanotubes (CNTs) and manganese oxide particles. The study of the electronic structure of the nanocomposite, performed by X-ray photoelectron spectroscopy (XPS), showed that manganese is in two chemically nonequivalent states in MnO2-x and in KMnO4 . It has been established that manganese oxide is deficient in oxygen. In the course of electrochemical tests performed by the method of cyclic voltammetry (CVA), it is shown that the electrode based on the nanocomposite showed high arial capacitance values of 320 mF∙cm–2 at a potential scan rate of 5 mV∙s–1 and a low gravimetric capacitance of 14 F∙g–1. With an increase in the potential scan rate, the specific capacitance of the nanocomposite significantly decreased relative to CNTs, which is due to a number of reasons: (i) insufficient porosity of the electrode surface; (ii) a decrease in the amount of MnOx nanoparticles in the electrode and their dissolution in the electrolyte during charge-discharge processes.
{"title":"Morphology, structure, and electrochemical properties of the MnOx @CNTs composite: a study of SEM, EDX, XPS, and CVA methods","authors":"P. M. Korusenko, S. N. Nesov, K. E. Ivlev","doi":"10.25206/1813-8225-2022-182-86-92","DOIUrl":"https://doi.org/10.25206/1813-8225-2022-182-86-92","url":null,"abstract":"In this work, we carried out a comprehensive study of the morphology, chemical composition, electronic structure, and electrochemical characteristics of a nanocomposite based on carbon nanotubes (CNTs) and manganese oxide particles. The study of the electronic structure of the nanocomposite, performed by X-ray photoelectron spectroscopy (XPS), showed that manganese is in two chemically nonequivalent states in MnO2-x and in KMnO4 . It has been established that manganese oxide is deficient in oxygen. In the course of electrochemical tests performed by the method of cyclic voltammetry (CVA), it is shown that the electrode based on the nanocomposite showed high arial capacitance values of 320 mF∙cm–2 at a potential scan rate of 5 mV∙s–1 and a low gravimetric capacitance of 14 F∙g–1. With an increase in the potential scan rate, the specific capacitance of the nanocomposite significantly decreased relative to CNTs, which is due to a number of reasons: (i) insufficient porosity of the electrode surface; (ii) a decrease in the amount of MnOx nanoparticles in the electrode and their dissolution in the electrolyte during charge-discharge processes.","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126811025","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 : 1900-01-01DOI: 10.25206/1813-8225-2019-166-17-22
A. V. Shtib, V. R. Vedruchenko, I. Malahov
{"title":"About modeling of working process of ship diesel at use as fuel of gas condensate from Urengoy fields","authors":"A. V. Shtib, V. R. Vedruchenko, I. Malahov","doi":"10.25206/1813-8225-2019-166-17-22","DOIUrl":"https://doi.org/10.25206/1813-8225-2019-166-17-22","url":null,"abstract":"","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114115387","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 : 1900-01-01DOI: 10.25206/1813-8225-2022-182-43-47
S. Lebedev
The tooth interior fatigue fracture is an important criterion for the performance of a gear. The article analyzes the existing methods for determining the tooth interior fatigue fracture of cylindrical gears. Methods (Findley, V. I. Korotkina, E. I. Tesker and V. N. Syzrantsev) are validated on the basis of available experimental data. The results are presented in the form of graphs of changes in the safety factor for the depth of a case and a summary table of calculations and experimental results.
齿内疲劳断裂是衡量齿轮性能的一个重要指标。分析了圆柱齿轮齿内疲劳断裂的现有判定方法。方法(Findley, V. I. Korotkina, E. I. Tesker和V. N. Syzrantsev)在现有实验数据的基础上进行了验证。计算结果以情况深度安全系数变化图和计算与实验结果汇总表的形式给出。
{"title":"Analysis of methods for calculating tooth interior fatigue fracture","authors":"S. Lebedev","doi":"10.25206/1813-8225-2022-182-43-47","DOIUrl":"https://doi.org/10.25206/1813-8225-2022-182-43-47","url":null,"abstract":"The tooth interior fatigue fracture is an important criterion for the performance of a gear. The article analyzes the existing methods for determining the tooth interior fatigue fracture of cylindrical gears. Methods (Findley, V. I. Korotkina, E. I. Tesker and V. N. Syzrantsev) are validated on the basis of available experimental data. The results are presented in the form of graphs of changes in the safety factor for the depth of a case and a summary table of calculations and experimental results.","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121101299","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 : 1900-01-01DOI: 10.25206/1813-8225-2019-167-100-105
A. Fedotov, Yu. G. Malinovskiy
{"title":"About probability of error detection of unauthorized impacts on pipeline with active vibroacoustic method of control","authors":"A. Fedotov, Yu. G. Malinovskiy","doi":"10.25206/1813-8225-2019-167-100-105","DOIUrl":"https://doi.org/10.25206/1813-8225-2019-167-100-105","url":null,"abstract":"","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122673876","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 : 1900-01-01DOI: 10.25206/1813-8225-2022-184-66-69
K. K. Kim, A. Tkachuk, A. Kuznetsov
We consider the small-capacity meter with its technical and metrological characteristics in this paper. The diagram of the functional generator and the voltage timing diagrams are given to study operation of the functional generator. The issues of using a capacity meter during the measurement of the parameters of the railway transport devices are considered.
{"title":"Design of small capacity meter with linear characteristic","authors":"K. K. Kim, A. Tkachuk, A. Kuznetsov","doi":"10.25206/1813-8225-2022-184-66-69","DOIUrl":"https://doi.org/10.25206/1813-8225-2022-184-66-69","url":null,"abstract":"We consider the small-capacity meter with its technical and metrological characteristics in this paper. The diagram of the functional generator and the voltage timing diagrams are given to study operation of the functional generator. The issues of using a capacity meter during the measurement of the parameters of the railway transport devices are considered.","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134266611","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 : 1900-01-01DOI: 10.25206/1813-8225-2019-168-15-19
А. А. Krutko, D. A. Sedykh, А. А. Vorobev, A. R. Putintseva, Y. O. Filippov
{"title":"Study of stress-strain state of wheelset of freight car during braking","authors":"А. А. Krutko, D. A. Sedykh, А. А. Vorobev, A. R. Putintseva, Y. O. Filippov","doi":"10.25206/1813-8225-2019-168-15-19","DOIUrl":"https://doi.org/10.25206/1813-8225-2019-168-15-19","url":null,"abstract":"","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133867228","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 : 1900-01-01DOI: 10.25206/1813-8225-2021-179-56-61
A. Bychkov, T. A. Funk, A. V. Aleksandrov
The article provides a comparative analysis of the structures of synchronization of the motion of electric drives of medium and high power. A comparison of synchronization structures is made in terms of the impact on the final operation of the system and hardware synchronization methods in terms of applicability and maximum performance. The mathematical apparatus is based on the principle of separation of the movements of each of the electric drives and the representation of its transfer function in matrix form. The control ranges and speed of different types of systems are compared experimentally by evaluating the speed of data transmission and evaluating the speed ripple at low revs.
{"title":"Methods of synchronization of electric drives not mechanically connected","authors":"A. Bychkov, T. A. Funk, A. V. Aleksandrov","doi":"10.25206/1813-8225-2021-179-56-61","DOIUrl":"https://doi.org/10.25206/1813-8225-2021-179-56-61","url":null,"abstract":"The article provides a comparative analysis of the structures of synchronization of the motion of electric drives of medium and high power. A comparison of synchronization structures is made in terms of the impact on the final operation of the system and hardware synchronization methods in terms of applicability and maximum performance. The mathematical apparatus is based on the principle of separation of the movements of each of the electric drives and the representation of its transfer function in matrix form. The control ranges and speed of different types of systems are compared experimentally by evaluating the speed of data transmission and evaluating the speed ripple at low revs.","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114352943","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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