Факультет "Управління процесами перевезень"

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ENG: Faculty "Managing Transportation Processes"

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Logistics Management of Motor Vehicle Terminal Operations as a Queuing System
(Publishing House “Helvetica”, Odesa, 2026) Muzykin, Mykhailo I.; Nesterenko, Halyna I.; Bibik, Svitlana I.; Barkalova, Nataliia O.
ENG: The article analyzes calculating the motor vehicle terminal operations as a queuing system and determining the effectiveness of proposed methods for optimizing terminal operations based on logistic approaches. The research assesses the feasibility of implementing a control system at a humanitarian aid warehouse that would ensure the collection and storage of data on vehicle locations at loading areas, the status of loading and unloading mechanisms, and decision-making regarding their use, as well as to transmit commands to drivers to enhance the efficiency of road transport operations during humanitarian cargo delivery. The core principle of the terminal’s operations is optimal logistics management of cargo flows. Goods are sorted by priority and destination, ensuring minimal delays and rapid delivery of humanitarian aid to those in need. Calculations have been made for the operation of the motor vehicle terminal as a queuing system, specifically focusing on vehicle downtime during unloading at the humanitarian warehouse. The effectiveness of the proposed terminal optimization methods based on logistic approaches was also evaluated. The vehicle idle time during cargo operations was determined for traditional technology and for the implementation of a regulation system for truck arrival at loading fronts. Furthermore, the annual cost savings achievable through the organization of an optimal regulation system for truck arrivals at terminal loading fronts were calculated. It is proposed to develop the integrated decision support within the terminal system’s functional cycle as an automated system. The main objective of this method is to eliminate the ‘human factor,’ as automation is intended to enhance data quality, streamline the processing of cargo owner information, and optimize technological processes. The primary challenges for humanitarian aid terminals include ensuring cargo security, preventing delays, and maintaining operational responsiveness to changing conditions. At the same time, investments in advanced technologies and infrastructure improvements can significantly increase the operational efficiency of such terminals.
Substantiating the Reliability Conditions for the Production Process at Metallurgical Enterprises Through the Fault-Tolerant Functioning of the System «Extraction of Raw Materials – Technological Railroad Routes – Metallurgical Production»
(PC TECHNOLOGY CENTER, 2024) Zaruba, Oleksandr V.; Okorokov, Andrii M.; Vernyhora, Roman V. ; Zhuravel, Irina L.; Barkalova, Nataliia O.
ENG: The object of this study is the process of formation of insurance reserves at enterprises in the metallurgical industry. Under conditions of uneven supply of raw materials to metallurgical enterprises due to disruption of the transportation process or other reasons, there is a need to create insurance stocks in order to ensure the continuity of production. At the same time, it is necessary to take into account existing restrictions, such as the limited capacity of railroad sections and the impossibility of organizing parallel movement of trains, etc. The presence of these limitations makes it impossible to use classical methods for solving similar problems, such as linear programming. Therefore, to resolve the task, a simulation model was built, based on the discrete-event principle in the AnyLogic University Researcher environment using Oracle libraries and the Java SE compiler. With the help of the model, the process of rotation of dispatch routes at the railroad yard with multiple suppliers and one consignee was formalized. The optimization criterion was chosen to be the minimum deviations of fluctuations in reserves of iron ore concentrate and coke. Analysis of the simulation results revealed that the optimal size of the fleet of railroad routes on the selected rotation polygon is 30 units; at the same time, their utilization rate will be 65 %. It was also established that fluctuations in raw material stocks have a «natural character», which is confirmed by the normal distribution of the density of stock volumes. Under these conditions, the value of fluctuations in the volumes of the main raw materials will be ±13115 t/day for iron ore concentrate, and ±5298 t/day for coke. Reducing the range of fluctuation of raw materials volumes could make it possible to optimize the costs of creating stocks and streamline the transport work of the enterprise for providing raw materials.