Herald of the Ural State University of Railway Transport最新文献_第5页

Application of ontological approach for creation of intellectual management system by railway transport 本体论方法在铁路运输智能管理系统创建中的应用

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2019-3-33-41

A. Kazakov, A. Dudakova

引用次数: 1

Improving business processes of the railway station complex based on digital technologies 基于数字技术改进火车站综合体业务流程

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2022-4-60-67

V. Parshina

{"title":"Improving business processes of the railway station complex based on digital technologies","authors":"V. Parshina","doi":"10.20291/2079-0392-2022-4-60-67","DOIUrl":"https://doi.org/10.20291/2079-0392-2022-4-60-67","url":null,"abstract":"The strategy of JSC Russian Railways until 2030 sets the task of realizing the commercial potential of railway terminals and stations, through which on average more than 2.6 million passengers pass daily. The projected growth of passenger traffic determines the development of infrastructure of stations, the defining part of which is high-quality information support. Modernization of railway stations implies, among other things, creation of the timely, accessible and complete information space for customers, it also requires the regulation of increasing passenger flows based on high-quality information. This article discusses the improvement of information processes using digital technologies. The proposed modernization is not refinement of automation elements of existing business processes of the passenger station on another technical platform, but the development and implementation of new technologies for passenger and customer information services based on a modern intelligent management system for information and reference processes. Business processes based on digital technologies are built taking into account the specifics of the information space of a particular station. Improving the information support of business processes will improve the quality of services provided to passengers and customers, the technological reliability of processes, as well as the economic efficiency of the station.","PeriodicalId":118708,"journal":{"name":"Herald of the Ural State University of Railway Transport","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123859298","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}

引用次数: 0

Methodological framework of development of human capital for Russia’s «green» economy 俄罗斯“绿色”经济中人力资本发展的方法论框架

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2019-2-76-86

V. Antropov, M. Kniss

引用次数: 0

Modeling of information exchange in case of emergencies during railway transport process 铁路运输过程中突发事件信息交换建模

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2020-1-58-68

N. Sirina, O. Sisina

引用次数: 1

Volterra integral equation method in the study of dynamics of self-gravitating gas bounded by free surface 以自由面为界的自重力气体动力学研究中的Volterra积分方程法

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2022-2-4-23

N. P. Chuyev

{"title":"Volterra integral equation method in the study of dynamics of self-gravitating gas bounded by free surface","authors":"N. P. Chuyev","doi":"10.20291/2079-0392-2022-2-4-23","DOIUrl":"https://doi.org/10.20291/2079-0392-2022-2-4-23","url":null,"abstract":"The paper investigates dynamics of the finite mass of self-gravitating ideal gas with a variable flow bounded by free surface. Unsteady gas flows are described by a phenomenological mathematical model of gas dynamics, which is constructed using a system of nonlinear integral-differential equations written in Eulerian coordinates. The gas motion is considered under the condition that the free boundary at all times consists of the same particles. This circumstance makes it convenient to switch from Eulerian coordinates to Lagrangian coordinates, for which the domain of determining the solution of the gas motion problem will be fixed in advance. The transformation of the system to Lagrangian coordinates makes it possible to reduce it to an equivalent system consisting of Volterra-type integral equations and the continuity equation in Lagrangian form, and get rid of the unknown boundary. Using the method of successive approximations, properties of compact spaces, a series of original and specific estimates found for functions describing the flows of the self-gravitating gas, convergence of a sequence of approximate solutions is proved under assumptions about smoothness of the initial data. The theorem of existence and uniqueness of the solution of the Cauchy problem for the system of integral equations of the Volterra type is proved, and, consequently, the solution of the desired problem is found within the framework of the assumptions made about the motion in vacuum of the isolated mass of the self-gravitating ideal gas with a variable flow domain.","PeriodicalId":118708,"journal":{"name":"Herald of the Ural State University of Railway Transport","volume":"238 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124621506","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}

引用次数: 0

Methodology of forming the transport network of a railway station 火车站运输网的形成方法

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2021-3-50-64

P. Mishkurov, Aleksandr Rakhmangulov, O. V. Friedrichson

引用次数: 0

The place and role of analytical research of personnel training processes for the transport industry 运输业人员培训过程分析研究的地位和作用

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2021-3-94-101

E. Shepilova

{"title":"The place and role of analytical research of personnel training processes for the transport industry","authors":"E. Shepilova","doi":"10.20291/2079-0392-2021-3-94-101","DOIUrl":"https://doi.org/10.20291/2079-0392-2021-3-94-101","url":null,"abstract":"The defining role of analytical research of personnel training processes for the transport industry is indicated. In particular, the possibility of using the vicious Knall’s circles to identify problems in the development of transport education is investigated. The traditional functionality of the Knall’s circles has been expanded to the study of the mechanisms of positive development of the research object. Two types of models for describing these processes are proposed and analyzed, taking into account both additive and multiplicative effects of development. Using concrete examples, the methodology for constructing various types of process models, selecting the optimal type of model and predicting development is shown. A systematic approach to the study of transport education is also proposed to be implemented using the tools of cenological analysis, which takes into account all participants in the personnel training system in the industry. The scientific and educational values of transport education allow us to determine the completeness and stability of the educational system, the direction of development (degradation, positive development of the system), the role and place of an individual educational institution in the personnel training system. The cytological study is illustrated by the example of the analysis of the results of the activities of branch railway universities. Scientific and educational self-regulating organizations for training specialists for the regional transport system are considered as one of the mechanisms for managing transport education. It is proposed to create self-regulating organizations of personnel training that regulate the activities of educational institutions, both among themselves and with consumers of educational services.","PeriodicalId":118708,"journal":{"name":"Herald of the Ural State University of Railway Transport","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128881943","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}

引用次数: 0

The effect of a ballast resistor block on the efficiency of an electric circuit of the ac electric locomotive 镇流器电阻块对交流电力机车电路效率的影响

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2022-3-138-144

V. Tomilov

{"title":"The effect of a ballast resistor block on the efficiency of an electric circuit of the ac electric locomotive","authors":"V. Tomilov","doi":"10.20291/2079-0392-2022-3-138-144","DOIUrl":"https://doi.org/10.20291/2079-0392-2022-3-138-144","url":null,"abstract":"In order to reduce electricity consumption when handling heavy freight trains, it is necessary to increase the performance characteristics of a regenerative braking mode of electric locomotives, the energy performance characteristics of which are currently unsatisfactory. In this article, the effect of the ballast resistor block on the efficiency indicator of the electric circuit of an alternating current electric locomotive is considered. The ballast resistor block is designed to ensure the static stability of the regenerative braking mode when organizing the inversion process of a thyristor rectifier-inverter converter with a constant margin angle δ = const. However, the use of ballast resistors in the anchor chain of traction electric engines negatively affects the energy performance characteristics of the electric locomotive in the regenerative braking mode. In order to eliminate this drawback, a method is proposed to ensure the stable operation of the regenerative braking mode without the block of ballast resistors of the alternating current electric locomotive with a rectifier-inverter converter based on IGBT transistors. The calculation of the efficiency performance characteristics of the electric circuit of an alternating current electric locomotive for the regenerative braking mode is presented both in the presence of the ballast resistor block in the power circuit and in the absence of it.","PeriodicalId":118708,"journal":{"name":"Herald of the Ural State University of Railway Transport","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122270754","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}

引用次数: 0

Evaluation concept of additive effect of electric and magnetic fields up to 1 kHz on personnel 高达1khz的电场和磁场对人员加性效应的评价概念

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2019-2-87-93

A. Zakirova

引用次数: 1

Reengineering of production process of pressing long-length products from high-strength aluminium alloys 高强度铝合金冲压长件生产工艺的再造

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2020-1-30-42

B. Gotlib, A. A. Vakalyuk, A. V. Golovenkin

{"title":"Reengineering of production process of pressing long-length products from high-strength aluminium alloys","authors":"B. Gotlib, A. A. Vakalyuk, A. V. Golovenkin","doi":"10.20291/2079-0392-2020-1-30-42","DOIUrl":"https://doi.org/10.20291/2079-0392-2020-1-30-42","url":null,"abstract":"A hybrid technology of reengineering of the existing hot-pressing production process of long-length products from high-strength aluminium alloys is suggested. At the first stage of design functional and structural models of the existing process are constructed, through the analysis of which functional and structural models of the designed production process are formed. The construction of models involves IDEF-design methods which are a further development of SADT methodology of structured analysis and design of complex systems. The structural model of the designed process is presented in graphical language IDEF3. Further, by means of methods of functional and structural, functional and constructive, structural and constructive integration search and optimization of the technological devices realizing the required production functions is carried out. Such technologies have been used in the development of complex aerospace systems. In the process of reengineering the existing production process of pressing products from high-strength aluminium alloys, a design of an energy and material-saving automated production process has been developed, in which, unlike the existing process on one unit in a continuous process flow, the main technological operations of plastic deformation, additional heating, heat hardening and straightening of the pressed products are carried out directly on the output bed of the press. A part of the technical solutions of the project passed industrial testing on a the press complex with a force of 50 MN. The suggested production process is universal and can be applied both in production of long-length products from high-strength and low easily deformable aluminium alloys.","PeriodicalId":118708,"journal":{"name":"Herald of the Ural State University of Railway Transport","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127841977","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}

引用次数: 0