Collection of scientific works of the State University of Infrastructure and Technologies series "Transport Systems and Technologies"最新文献

{"title":"Analysis of shunting locomotive operating modes when performing traction tasks","authors":"I. Kostenko, I. Bilokon, Y. Lysenko, Y. Chernyshenko, I. Riabov","doi":"10.32703/2617-9059-2023-42-2","DOIUrl":"https://doi.org/10.32703/2617-9059-2023-42-2","url":null,"abstract":"The paper considers the modes of operation of shunting diesel locomotives ČME3 when performing traction tasks at the service areas of the locomotive depot Koziatyn. A mathematical model of train movement with a ČME3 diesel locomotive has been developed, which has been used to solve a series of traction problems. It was found that the operating modes of a diesel engine are most influenced by the profile of the track section. It is determined that when moving from the Koziatyn station, the relative duration of the traction mode is 14...39% of the total movement time. When moving in the direction of the Koziatyn station, the relative duration of the traction mode is 28...90%. In the traction mode, the diesel engine operates at rated power. For the examined sections of the movement, we evaluated the diesel fuel consumption for a serial diesel locomotive, a diesel locomotive with a modern diesel engine, and a battery locomotive charged from an onboard diesel generator set. It has been determined that a diesel locomotive with a modern diesel engine consumes 18...22% less fuel than a standard diesel locomotive. In the case of a battery locomotive, fuel consumption can be either lower or higher compared to a diesel locomotive with a modern diesel engine. At the same time, the accumulation of energy in the onboard energy storage device during electrodynamic braking and its use in traction modes helps to reduce fuel consumption.","PeriodicalId":503906,"journal":{"name":"Collection of scientific works of the State University of Infrastructure and Technologies series \"Transport Systems and Technologies\"","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139182706","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 theoretical basis of the choice of new locomotives for Ukraine in the post-war period","authors":"O. Gorobchenko, V. Matsiuk, H. Holub, D. Zaika, I. Gritsuk","doi":"10.32703/2617-9059-2023-42-3","DOIUrl":"https://doi.org/10.32703/2617-9059-2023-42-3","url":null,"abstract":"In the case of the research of promising locomotives, we are dealing with a complex event – \"choosing a locomotive for implementation\". To effectively solve this problem, it is suggested to decompose this event. Therefore, the purpose of this work is to develop a methodology for modeling the evaluation process according to objective criteria of various options of new traction rolling stock. The Saaty method has been developed by transforming the hierarchy into an artificial neural network. The training of this network occurs automatically when analyzing the matrices of pairwise comparisons, and at the output we have a generalized criterion – the rating of the locomotive R, the value of which varies from 0 (the worst indicator) to 1. This allowed, unlike the existing approach, not to compare locomotives by compiling a matrix of comparisons at the last stage. Instead, a matrix of comparisons of the most important criteria by which traction rolling stock is evaluated has been compiled. The developed method has the ability to support various strategies for the operation of the locomotive park. This is implemented at the stage of drawing up the second-level criteria comparison matrix. Depending on the tasks facing the railways, it is also possible to adjust the degree of preference of one criterion over another. This provides even greater flexibility in using the proposed method.","PeriodicalId":503906,"journal":{"name":"Collection of scientific works of the State University of Infrastructure and Technologies series \"Transport Systems and Technologies\"","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139182170","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":"Use of modified basalt fiber in transport construction","authors":"O. Doroshenko","doi":"10.32703/2617-9059-2023-42-5","DOIUrl":"https://doi.org/10.32703/2617-9059-2023-42-5","url":null,"abstract":"Basalt fiber is a promising material that can be used to create a new class of building materials. It has a number of advantages, including high strength, low weight and resistance to chemicals. One of the disadvantages of basalt fiber is its low alkali resistance. In an alkaline environment, the fiber is destroyed, which limits its use in building materials exposed to alkalis. The paper investigates the effect of heat treatment on the alkali resistance of basalt fiber. It was found that heat treatment at a temperature of 500 0C increases the alkali resistance of the fiber by 80%. This is due to the compaction of the fiber structure and the formation of iron-oxygen tetrahedra on its surface, which are resistant to alkalis. The authors of the article substantiate the feasibility of using heat-treated basalt fiber in transport construction. This material can be used to manufacture new types of building materials that are resistant to alkalis.","PeriodicalId":503906,"journal":{"name":"Collection of scientific works of the State University of Infrastructure and Technologies series \"Transport Systems and Technologies\"","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139182539","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":"Modeling and using intelligent multi-agent system in smart city: ontological approach","authors":"K. Tkachenko, O. Tkachenko, O. Tkachenko","doi":"10.32703/2617-9059-2023-42-4","DOIUrl":"https://doi.org/10.32703/2617-9059-2023-42-4","url":null,"abstract":"The article discusses the problems of using intelligent multi-agent systems in solving a set of problems in managing and planning processes in a modern city. The concept of constructing intelligent multi-agent systems in systems that support the concept of a Smart City based on ontological modeling is considered. The proposed approach makes it possible to build formalized ontological models and flexibly configure an intelligent multi-agent system to solve problems of coordinating the work of all services of a modern city. The transition from a city in the usual sense to a Smart City is extremely necessary due to the huge gap between the increased complexity of the political, social and economic environment of modern settlements and the already outdated administrative and technological infrastructure, unable to function effectively in the new conditions. The article shows the need to rethink the key elements and general concept of the Smart City. The definition of a Smart City as a multiagent intelligent system is presented. An ontological approach is described, which involves minimal interference in the work of city services, ensures smooth changes and can be carried out by several teams of specialists in parallel. Currently, the method is used by the authors in a project aimed at developing Smart City – a digital ecosystem of services that allows achieving a synergistic effect between various subsystems (transport, ecology, energy, urban design, etc.).","PeriodicalId":503906,"journal":{"name":"Collection of scientific works of the State University of Infrastructure and Technologies series \"Transport Systems and Technologies\"","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139182087","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":"Formation and management of safety culture in the railway industry: best practices and strategies","authors":"O. Bal","doi":"10.32703/2617-9059-2023-42-6","DOIUrl":"https://doi.org/10.32703/2617-9059-2023-42-6","url":null,"abstract":"This article examines the current issue of safety culture in the railway industry, in particular, the formation and development of a safety culture on the railways of Ukraine. In the article emphasizes the uniqueness of the European model of railway safety culture. The purpose of the study is to comprehensively study the principles, methods and effectiveness of the formation and management of the safety culture in the railway industry. Recommended strategies include leadership commitment, staff engagement, training, communications, security audits, and technology use. A comparative analysis between the EU and Ukraine's railway system points to structural and regulatory differences, emphasizing the need for Ukraine to adapt European practices in the field of safety. The article also offers a structured approach to incident analysis and implementation of security practices, as well as the application of the Plan-Do-Check-Act cycle for systemic security management. These approaches aim to improve safety practices and ensure efficient transportation systems.","PeriodicalId":503906,"journal":{"name":"Collection of scientific works of the State University of Infrastructure and Technologies series \"Transport Systems and Technologies\"","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139182411","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":"Determination of the optimal cargo operations strategy of a bulk carrier vessel, with continuous ensuring its seaworthiness","authors":"O. Bolgov","doi":"10.32703/2617-9059-2023-42-1","DOIUrl":"https://doi.org/10.32703/2617-9059-2023-42-1","url":null,"abstract":"The correct loading of bulk carriers is essential for their maritime safety. Inadequate loading can lead to various risks, including compromised hull strength, reduced stability and violation of the vessel's seaworthiness. Existing shipboard instruments do not allow for timely planning and real-time control of loading operations, which can lead to potential risks. The high intensity of loading operations at dry bulk terminals exacerbates the problem, as there is often insufficient time to adequately prepare and verify loading plans, increasing the risk of overloading cargo holds. To address this problem, the article proposes the development of new methods for bulk carriers cargo operations planning. These methods would optimise the distribution of bulk cargo, taking into account factors such as port facilities, ship design and nautical restrictions of the planned voyage. The aim is to formalise cargo operations in terms of a mathematical model of the vessel and to establish functional relationships between parameters that affect the seaworthiness of the vessel. By analysing the relationships between different parameters, the researchers aim to determine the best strategy for cargo operations that will ensure the continuous seaworthiness of the bulk carriers. This approach would help to improve bulk carrier’s safety and reduce the risks associated with incorrect loading. The development of such methods is seen as a promising area of scientific research that can enhance the safety of those vessels. By determining the best strategy for cargo operations based on the criterion of continuous seaworthiness, it aims to prevent the deterioration of the vessel's structural integrity and ensure that the vessel remains in a seaworthy condition throughout the loading process. The article emphasizes the need for scientific research in this area to enhance the safety of bulk carriers and proposes the development of new methods based on mathematical modeling to optimize cargo operations and maintain the vessel's seaworthiness throughout the process.","PeriodicalId":503906,"journal":{"name":"Collection of scientific works of the State University of Infrastructure and Technologies series \"Transport Systems and Technologies\"","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139183060","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}