http://lib.kart.edu.ua/handle/123456789/13213 2026-07-27T06:39:19Z 2026-07-27T06:39:19Z Кужавський, Микола Сергійович Kuzhavsky, Mykola http://lib.kart.edu.ua/handle/123456789/33153 2026-07-21T13:32:38Z 2020-01-01T00:00:00Z

Title: Особливості формування системи стратегічного управління розвитком підприємств залізничного транспорту в умовах трансформаційних змін у бізнес-середовищі Authors: Кужавський, Микола Сергійович; Kuzhavsky, Mykola Abstract: UA: У статті проаналізовано сучасний стан і тенденції розвитку підприємств залізничного транспорту. Окреслено ключові трансформаційні зміни середовища їх функціонування, пов’язані з реструктуризацією залізничної компанії, формуванням конкурентного ринку залізничних перевезень і поширенням масштабних цифрових змін у залізничній галузі. Зважаючи на трансформаційні зміни як внутрішнього, так і зовнішнього середовища розвитку підприємств залізничного транспорту, обґрунтовано доцільність перегляду підходу до стратегічного управління галуззю. Розкрито особливості формування та реалізації системи стратегічного управління розвитком підприємств залізничного транспорту з урахуванням ідентифікованих трансформацій. Доведено доцільність їх урахування під час реалізації стратегічного підходу до управління підприємствами залізничного транспорту з метою стабілізації їх стану й адаптації підприємств галузі до наростаючих зовнішніх та внутрішніх викликів.; EN: The article analyzes the current state and trends in the development of railway transport enterprises. Key transformational changes in the environment of their functioning related to the restructuring of the railway company and the formation of a competitive market for railway transportation and the spread of large-scale digital changes in the railway industry are identified. Taking into account the transformational changes in both the internal and external development environment of railway transport enterprises, the expediency of revising the approach to strategic management of the industry is justified. The features of the formation and implementation of the system of strategic management of the development of railway transport enterprises, taking into account the identified transformations, are revealed. Features of the formation and implementation of the system of strategic management of the development of railway transport enterprises are reflected from the point of view of taking into account such key changes in their growth environment as the formation of a competitive railway transportation market and the spread of digitalization processes in the railway industry. The main stages of formation and implementation of the system strategic management of the development of railway transport enterprises are revealed, which include: strategic analysis of the development of railway transport enterprises, strategic forecasting of the development of railway transport enterprises, strategic planning of the development of railway transport enterprises, implementation and monitoring of the effectiveness of the implementation of the development strategy of railway transport enterprises, adjustment and updating of the development strategy of railway transport enterprises in accordance with internal and external changes. The expediency of taking them into account in the implementation of a strategic approach to the management of railway transport enterprises in order to stabilize their condition and adapt industry enterprises to growing external and internal challenges is proved.

2020-01-01T00:00:00Z Ravlyuk, Vasyl Elyazov, İsrail Afanasenkо, Ihor Ravliuk, Mykola http://lib.kart.edu.ua/handle/123456789/30488 2025-12-28T07:02:40Z 2020-01-01T00:00:00Z

Title: Determination of parameters of abnormal wear of brake pads of freight cars Authors: Ravlyuk, Vasyl; Elyazov, İsrail; Afanasenkо, Ihor; Ravliuk, Mykola Abstract: The complex of operational studies and theoretical research was performed on the occurrence of harmful wear that changes geometrical parameters of the useful contact area of the brake pads of freight cars at various established standard clearance between the pad and the wheel, which significantly impairs the braking efficiency of trains. The inspections of the mechanical part of the brakes attracted attention to the abnormal wear of the brake pads of the freight cars, which occurs because the common centre of gravity of the pad and the brake shoe, which are on the pendular suspension, do not coincide with the centre of the hole in the brake strut for any pad. The results of calculations using the coordinate method performed in the Mathcad software environment and the graphical one performed in AutoCAD to determine the geometrical parameters of the formation of the upper harmful wear of the pad depending on the standard clearance between the wheel and the brake pad were compared to proved theoretically that the error between them does not exceed 5-7%.

2020-01-01T00:00:00Z Plugin, A. А. Miroshnichenko, S. V. Lobiak, O. V. Kalinin, O. A. Plugin, D. A. http://lib.kart.edu.ua/handle/123456789/30453 2025-12-25T17:26:08Z 2020-01-01T00:00:00Z

Title: Crack resistance of reinforced-concrete sleepers with elastic rail fastening systems without base-plate Authors: Plugin, A. А.; Miroshnichenko, S. V.; Lobiak, O. V.; Kalinin, O. A.; Plugin, D. A. Abstract: The article presents the main results of complex experimental and theoretical research into the crack resistance and the limit state of reinforced-concrete sleepers with elastic rail fastening systems without base-plate. The objective of this study is to uncover reasons for the cracks and other breakages during operation, demonstrate their importance, and produce a set of recommendations for prevention of the most serious defects. The research also involved statistical analysis of the defect factor for sleepers, and determined the number of defects by type according to track layout, traffic density, tonnage transported, concrete grade and other characteristics based on the results of full-scale research of track sections and surveys from maintenance specialists. The full-scale research was made on rail sections under standard operational modes and on a test track section of straight and curved elements with sleepers of concrete grades C32/40, С35/45 and C40/50.The study was based on numerical methods, modelling of the stress-strain behaviour of the track, and estimation of the performance of sleepers with cracks.The method used incremental-iterative algorithms to consider the elastic plastic properties of materials, solve contact problems in operation of rail fastening systems, and also reveal the structural nonlinearity of joint action for track elements. The method was realized in LIRA-SAPR software on the basis of Building Information Modelling (BIM) and the Finite Element Method (FEM).The results were verifiedby experimental research into the sleepers under static and dynamic loads with estimation of crack development in terms of concrete grades, deformation modulus, rigidities of the ballast layer and the sub-grade, position of the reinforcement and other characteristics.

2020-01-01T00:00:00Z Харченко, Ольга Володимирівна Kharchenko, Olga http://lib.kart.edu.ua/handle/123456789/30202 2025-12-07T08:37:37Z 2020-01-01T00:00:00Z

Title: Принципи і чинники активізації процесів ресурсозбереження на підприємствах залізничного транспорту Authors: Харченко, Ольга Володимирівна; Kharchenko, Olga Abstract: UA: З огляду на сучасні умови господарювання, встановлено об’єктивну необхідність розвитку діяльності з ресурсозбереження на підприємствах залізничного транспорту. Розкрито зміст ресурсозберігаючої діяльності з позицій комплексного підходу, що включає такі аспекти ресурсозбереження, як: раціональне формування ресурсів; оптимальне використання ресурсів і мінімізація ресурсоспоживання; усунення втрат і залучення невикористовуваних резервів; підвищення ефективності використання та інтенсифікації факторів виробництва; запобігання шкоди навколишньому середовищу; усунення дефіциту факторів виробництва. Розкрито головні принципи організації ресурсозбереження на підприємствах залізничного транспорту, які є основою якості управлінських рішень щодо використання економічних ресурсів. Проведено систематизацію чинників активізації ресурсоорієнтованої діяльності підприємств залізничного транспорту.; EN: Taking into account the current economic conditions, an objective need to develop resource-saving activities at railway transport enterprises has been established. It was found out that energy efficiency activities are actively carried out at the enterprises of the railway industry, but the situation remains unresolved regarding other types resources and the organization complex work on resource conservation. The content resource-saving activities is revealed from the perspective an integrated approach, which includes such aspects resource conservation as: rational formation resources; optimal use resources and minimization resource consumption; elimination losses and attraction unused reserves; increasing the efficiency and intensification factors production; prevention environmental damage; elimination of the shortage factors production. The main principles of organization resource conservation at railway transport enterprises (complexity, consistency, constancy, measurability, involvement personnel, openness, dynamism, sufficiency information, priority, availability minimal costs, not deterioration working conditions, expediency, strategic development, training and development personnel), which are the basis for the quality management decisions on the use economic resources. to effectively implement resource conservation at railway transport enterprises today, it is necessary to solve the following tasks: to ensure a high level of qualification employees; to achieve high intellectual potential; to ensure technical and technological independence of enterprises; to achieve high management efficiency; to ensure the necessary level of environmental activity; to ensure legal protection; to ensure information security protection. The main features of classification resource-saving factors are clarified: belonging to the environment of the enterprise, attitude to the production process and the nature of the impact on the result production functioning. The factors activation resourcesaving activities at railway transport enterprises are systematized and revealed.

2020-01-01T00:00:00Z