Proceedings of Petersburg Transport University最新文献

{"title":"Neural Network and Chatbot “Valera” for Advanced Specialist Training","authors":"Ivan Andronchev, Anatoliy Solyanik","doi":"10.20295/1815-588x-2023-4-1034-1039","DOIUrl":"https://doi.org/10.20295/1815-588x-2023-4-1034-1039","url":null,"abstract":"Purpose: To address the issue of linking education and industry, through the model of the quality of engineering activities in additional professional education for engineers in the preparation of highly qualified personnel. To demonstrate the feasibility of using a neural network to develop methodological foundations for the preparation of highly qualified personnel. Methods: A model for the learning process has been proposed, utilizing a neural network and the chatbot “Valera” for the preparation of highly qualified personnel. Results: An example of successful experience in applying the electronic educational and methodological complex “Competent Metrologist” and its methodological foundations in the system of additional professional education for engineers and the preparation of highly qualified personnel is provided. Practical significance: The necessity of using a neural network in the process of personnel training is demonstrated. Positive experience in implementing ideas and approaches to creating a neural network for the chatbot “Valera” and its methodological foundations in the system of additional professional education for engineers has been realized in the electronic educational and methodological complex “Competent Metrologist”. The proposed approaches to education can be recommended for practical implementation.","PeriodicalId":273874,"journal":{"name":"Proceedings of Petersburg Transport University","volume":"18 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138966180","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}

{"title":"The Use of Neural Network Technologies Using the Example of the Domestic Software Platform DeepTalk in the Educational Process of PGUPS at the Department “Information and Computing Systems”","authors":"Sergey Ermakov, Natal'ya Shed'ko","doi":"10.20295/1815-588x-2023-4-843-852","DOIUrl":"https://doi.org/10.20295/1815-588x-2023-4-843-852","url":null,"abstract":"Purpose: To develop a methodology for using artificial intelligence to solve the problem of intensifying the process of developing students’ professional competencies. To show the need to improve teaching technologies due to a reduction in classroom time allocated to general education disciplines when reconfiguring the curricula for training specialists. To consider the issue of rethinking the effectiveness of the existing distance learning system (DLS) as a means of rationalizing educational procedures in connection with the continuing risk of students acquiring only a minimum level of knowledge due to the use of template electronic demonstration materials in the DLS. Methods: To achieve the stated goals, data from the analysis of the results of the implementation of the “Digital Teacher” (DT) product, developed on the basis of the domestic DeepTalk platform, into the educational process of the ICS Department are used. An algorithm for training a neural network as a mathematical core of the DT has been developed. When used at the first stages of loading the DT with text and presentation materials, the principle of randomization of logically related queries, answers and comments from teachers on lectures and practical assignments is implemented. Results: A technique for iterative adjustment of the DT has been developed and tested when increasing the array of situational data with the following elimination of the contradiction between the requirement for representativeness and the initially small volume of the generated training sample. Practical significance: The creation of a developed neural network product is the first step in the deployment of the University’s digital services system, the hierarchical structure of which according to areas of training, qualifications and specializations should include “Digital Teacher”, “Digital Applicant Curator” and other similar products. The introduction of DT into providing teaching in senior years will contribute to the formation of the student’s individual educational trajectory and the development of his cognitive abilities. Further, in the course of obtaining additional professional education, the use of DeepTalk will ensure the acquisition of skills in interacting with AI, used as a means of supporting decision-making under conditions of uncertainty. DeepTalk allows you to assess the predisposition of applicants to the main types of professional activities at JSCo “Russian Railways”.","PeriodicalId":273874,"journal":{"name":"Proceedings of Petersburg Transport University","volume":"25 32","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138966230","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}

{"title":"Passenger Service Based on the Principle of “Clean Feet”. A Series of Articles. Part 1","authors":"T. Shmanev","doi":"10.20295/1815-588x-2023-4-967-974","DOIUrl":"https://doi.org/10.20295/1815-588x-2023-4-967-974","url":null,"abstract":"Purpose: Conducting a comparative analysis of the existing sources of the formation of the interpretation and use of the term and terms similar in meaning and essence: “transport hub” and “transport interchange hub” and their assessment. Methods: The main tools for the analysis and management of the passenger complex in the implementation of permanent activities are: cause-and-effect relationships, algorithmization, mapping, data analysis, etc. Results: The characteristics of the definitions of the concept of types of SP (stop point), TH (transport hub), TIH (transport interchange hub ) and TIC (transport interchange complex) designated in open literary and scientific sources, including foreign ones, are considered, and the formulation of the term is derived for the first time: “transport boarding hub”. Practical significance: A new approach to the organization of passenger transportation, through the revision, updating of individual concepts (terms) and the introduction of new definitions, will allow the transport and logistics system to be raised to a new level, due to the transition from the organization of local TIHs to the consideration of the entire route (based on the principle of “door to door”) of the passenger based on the principle of “clean feet”.","PeriodicalId":273874,"journal":{"name":"Proceedings of Petersburg Transport University","volume":"20 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138966339","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}

{"title":"On the Influence of Fuel Bioethanol on the Operational Properties of Transport Engines","authors":"Aleksey Penkin, Evgeniy Ruppel', A. Vorob'ev, Aleksandr Sobolev, Igor' Novosel'skiy","doi":"10.20295/1815-588x-2023-4-1027-1033","DOIUrl":"https://doi.org/10.20295/1815-588x-2023-4-1027-1033","url":null,"abstract":"Purpose: To comprehensively consider the effect of bioethanol as an additive to gasoline on the operational properties of transport engines from the point of view of their differences in physical and chemical properties and technologies, taking into account not only advantages, but also disadvantages. To more profoundly evaluate the volatility of gasoline-ethanol mixtures at different ethanol and water contents, and its effect on startability. Methods: Comparison of available data in normative and reference literature, also in scientific publications. Conducting an experiment using the standard method for gasoline to measure the saturated vapor pressure of gasoline-ethanol mixture of various composition. Results: From the collected data, parameters of the gasoline-ethanol mixture that are important for operation of transport engines have been identified. The need for a detailed assessment of the influence of the composition of such mixtures on the structural materials of transport engines has been identified. Data have been obtained on the volatility of mixtures in a wide temperature range, simulating real operating conditions. No significant deterioration in startability has been revealed. A visible violation of the phase stability of mixtures containing more than 7.5% water has been noted. Practical significance: The measured degree of volatility and startability of gasoline-ethanol mixtures of the various composition allows us to conclude that their level in comparison with gasoline, for mixtures with a 5% ethanol content is satisfactory, and for mixtures with 85% ethanol, is relatively satisfactory. For the first time, the parameters of the provided standard procedure are expanded, relative to the usual temperature recommended when measuring the vapor pressure, to possibly wider limits, allowing a more complete picture to be obtained.","PeriodicalId":273874,"journal":{"name":"Proceedings of Petersburg Transport University","volume":"8 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138966390","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}

{"title":"Prediction of Re-Radiated Noise and Vibration Generated in the Vicinity of Railroad Lines","authors":"Aleksey Zav'yalov","doi":"10.20295/1815-588x-2023-4-820-827","DOIUrl":"https://doi.org/10.20295/1815-588x-2023-4-820-827","url":null,"abstract":"Purpose: To analyze a ScopeRail model capable of predicting re-radiated noise and vibration in structures located in close proximity to rail lines. To compare the obtained results with an alternative, widely used model for accuracy assessment and the potential cost reduction of assessing the impact of vibrations on residential areas for new railway lines. Methods: To perform statistical analysis of the obtained data for modeling vibration of different types of ground. To calculate simulation results in order to create a database of vibration characteristics for different ground conditions, train speeds and distances from the track. Results: The results obtained have been analyzed and compared with an alternative, widely used model for determining accuracy. It is found that the ScopeRail model yields higher prediction accuracy, which can potentially reduce the cost of assessing the impact of vibrations on residential areas for new rail lines. A model is obtained which can instantly predict the vibration and re-radiated noise levels for different types of soil at different speeds of passing trains. Practical significance: Re-radiated vibration and noise model for the spaces in buildings immediately adjacent to the railroad track has been developed using a set of empirically obtained factors. Vibration and noise impacts have also been modeled using additional vibroacoustic mitigation measures (slabs and ballast mats) as well as vibration excitation parameters (switches, crossings and wheel stoppers).","PeriodicalId":273874,"journal":{"name":"Proceedings of Petersburg Transport University","volume":"6 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138966542","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}

{"title":"Evaluation of the Performance of Magnetic Indicators for Magnetic Powder Control of Railway Rolling Stock Parts","authors":"Aleksandr Otoka, Oleg Holodilov","doi":"10.20295/1815-588x-2023-4-1016-1026","DOIUrl":"https://doi.org/10.20295/1815-588x-2023-4-1016-1026","url":null,"abstract":"Purpose: To evaluate the performance of various luminescent magnetic suspensions on the example of individual small-sized parts of railway transport, differing in geometric shape, color, surface roughness and the presence of paint coating. To show the need to test magnetic suspensions, including ready-made ones, in aerosol cans on tuning (control) samples, taking into account the color, the presence of a non-magnetic coating, and other characteristics. Methods: Comparison of the obtained magnetic powder indications during wet magnetic powder control under conditions of magnetization of rolling stock parts by the applied field method using the MD-12PSH flaw detector. In practice, identical conditions have been maintained for magnetizing components at the center of the solenoid, uniformly applying magnetic suspension through aerosol can and sprayer to the surface, as well as inspecting for the presence of accumulations of magnetic powder particles under both daylight and ultraviolet irradiation. Results: The experiment has shown that the technical characteristics of the magnetic indicator stated in the passport by the manufacturer shouldn’t be fully trusted and relied on. At the same time, the use of one or more standard or tuning (control) samples with a huge range of control objects is not enough. Practice shows that, taking into account the fact that surfaces of parts differ, it is necessary to conduct a comparative analysis of magnetic suspensions for the brightness of powder glow, contrast, measured length of the magnetic indication on parts with artificial or natural defects with exactly the same surface. Practical significance: The article shows that it is necessary to use for each control object its own tuning or control sample. Only those objects of control that are identical or comparable in size, shape, color, roughness, and other characteristics fall under the exception. Therefore, only one sample can be used for them.","PeriodicalId":273874,"journal":{"name":"Proceedings of Petersburg Transport University","volume":"29 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138966105","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}

{"title":"Processing of Waste from the Metallurgical Industry for Stabilization and Reinforcemnet of Problematic Soils","authors":"Il'ya Pechencov","doi":"10.20295/1815-588x-2023-4-811-819","DOIUrl":"https://doi.org/10.20295/1815-588x-2023-4-811-819","url":null,"abstract":"Purpose: To examine existing methods of processing and recycling waste from the metallurgical industry, to elucidate their classification. To touch upon the negative impact of the metallurgical industry, in particular, of the waste generated from its activities on geosystems. To present technological solutions for addressing the issue of weak soils through their initial stabilization and subsequent reinforcement, specifically for urban infrastructure objects in the Russian Federation. Methods: Various technologies for the complex processing of solid waste from metallurgy have been developed, some of them have been implemented on an industrial scale abroad. We develop such technologies at the level of research and semi-industrial tests. Results: A distinctive feature of soils reinforced with solid wastes of metallurgy is that structure formation and strength development occur both in air-dry and in humid environments. These wastes effectively strengthen soils of different granulometric and chemical-mineralogical composition. As shown by laboratory studies and supporting construction, soils reinforced with this complex waste are suitable for constructing pavement structural layers. When strengthening sandy soils, a purely mechanical penetration and enveloping of soil particles (due to the small amount of clay particles) occurs without the formation of a strong spatial structure. Practical significance: The possibility of using waste from metallurgical production to strengthen weak soils is shown, and these new methods can be recommended for practical use.","PeriodicalId":273874,"journal":{"name":"Proceedings of Petersburg Transport University","volume":"17 19","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138966217","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}

{"title":"Reduction of Economic Losses in the Contact Network and Overhead Lines Electrified with Alternating Current","authors":"Maxim Shevlyugin, Andrey Kulikov, Darya Semenova","doi":"10.20295/1815-588x-2023-4-975-986","DOIUrl":"https://doi.org/10.20295/1815-588x-2023-4-975-986","url":null,"abstract":"Purpose: To reduce economic losses in the contact network (CN) and overhead lines (OL) electrified with alternating current. The existing electromagnetic influences on the alternating current railway lead to significant economic losses. Additionally, there is a problem of the contact wire (CW) burnout during the passage of a neutral section with a raised pantograph under voltage on a high-speed railway line (HSRL). CW burnout leads to failure of the contact network, repair costs, possible damage to other people’s property and rolling stock. As a whole, all this represents significant economic losses. Methods: The analysis of material and time costs for the elimination of problems that arise due to the CW burnout or due to the use of manual labor during the installation of OL has been carried out, in comparison with the proposed solutions to reduce economic losses. Results: In solving the problem of the negative electromagnetic influence of the contact line (CL) on the OL, a mobile mechanized complex (MMC) is designed to help, which performs the transposition of the OL wires in 6 steps with scrolling by 60° each support. This method will allow us to place the OL wires equidistantly from the contact wire. Scrolling with once-per-support frequency will align the asymmetry of the linear electrical parameters. All in all, MMC performs installation in an automated mode. The problems of the CW burnout can be reduced by the insulating coupling device (ICD) of the CL. ICD CL is a set of step resistances, which are located at the outer sections of the phase wires before and after the neutral section. It is aimed at reducing the current to a safe value, which will not lead to the contact wire burnout, failure of the CN and/or rolling stock and possible damage to other people’s property. Practical significance: The result is a set of measures in the form of MMC to reduce economic losses in overhead lines from the influence of CN and ICD CL to reduce losses in the contact network by maintaining the operability of the contact wire.","PeriodicalId":273874,"journal":{"name":"Proceedings of Petersburg Transport University","volume":"15 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138966300","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}

{"title":"Energy Consumption Quality Indicators in Collector and Asynchronous Traction Drives of AC Electric Locomotives","authors":"A. Zarif'yan, A. Evstaf'ev","doi":"10.20295/1815-588x-2023-4-987-998","DOIUrl":"https://doi.org/10.20295/1815-588x-2023-4-987-998","url":null,"abstract":"Purpose: To conduct an experimental study of the indicators of electrical energy consumption quality for serially produced freight electric locomotives of alternating current 2(3)ES5K with a collector traction drive and electric locomotives 2(3)ES5S with an asynchronous traction drive, to provide their comparison and comparative analysis. Methods: The main technical characteristics of the collector traction electric drive (TED) NB-514E and asynchronous TED DTA-1100 are presented. A measurement scheme for voltage and current on the power winding of the transformer is proposed. The monitoring of parameters has been carried out directly on electric locomotives using specialized metrological equipment. The processing of experimental data is based on decomposing the original signal into harmonic components using Fast Fourier Transform (FFT). Results: Parameters of voltage and current harmonics, phase shifts, as well as the values of active and reactive power of the corresponding harmonics have been obtained. An analysis of the spectral composition of voltage and current has been performed. Comparative analysis of the results obtained for electric locomotives with collector and asynchronous traction drives in traction mode has shown that the power factor is 0.65 and 0.99, respectively; and the coefficient of non-linear current distortions is 0.53 and 0.15. A conclusion has been drawn regarding significantly higher quality of electrical energy consumption in the asynchronous traction drive. Practical significance: Based on the specific values of the indicators of electrical energy consumption quality in collector and asynchronous traction drives in traction mode, it is possible to proceed to obtaining economic assessments for the transition of the locomotive fleet of Russian Railways (JSCo “RZD”) to nextgeneration electric locomotives of the 2(3)ES5S series.","PeriodicalId":273874,"journal":{"name":"Proceedings of Petersburg Transport University","volume":"4 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138966445","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}

{"title":"Analysis of Devices for Autonomous Continuous Monitoring, Alerting and Elimination of Dangerous Gas Levels in Battery Rooms","authors":"A. Agunov, Il'ya Terehin, Danil Fesak, E. Abishov, I. Baranov","doi":"10.20295/1815-588x-2023-4-999-1003","DOIUrl":"https://doi.org/10.20295/1815-588x-2023-4-999-1003","url":null,"abstract":"Purpose: To analyze the existing devices for autonomous continuous monitoring, alerting and elimination of dangerous gas level in the room. To analyze and form a proposal of a device for autonomous monitoring of gas level concentration in a battery room. Methods: Search and study of the patents for devices of autonomous continuous monitoring, alerting and elimination of dangerous gas level in the room, comparing the characteristics and working principles of these devices. Review of relevant articles and developments. Results: The paper presents an analysis of existing devices for autonomous continuous monitoring, alerting and elimination of hazardous indoor gas levels, along with comments on the shortcomings of existing devices. A proposal for a new monitoring device, developed and substantiated, is provided in the paper. Practical significance: The analysis conducted has revealed the necessity of creating a new device for autonomous continuous monitoring, alerting, and elimination of hazardous gas levels in battery rooms due to the imperfections and unsuitability of existing devices for battery rooms.","PeriodicalId":273874,"journal":{"name":"Proceedings of Petersburg Transport University","volume":"7 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138966517","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}