Modeling of Delivery Infrastructure for Solving Problems by Type of Goods Jamshid Barotov, Ziyoda Mukhamedova, Jamshid Kobulov, Rashida Tursunkhodjaeva, Shuxrat Saidivaliyev, et al. Systems, 2026 The paper introduces a novel intelligent modeling system of a railway cargo delivery which combines queuing theory and station-level technological activities to model the manner in which re-handling and waiting processes produce delivery delays. The proposed model is in contrast to the available literature, which focuses more on routing or time management; it clearly connects processing of the stations, queue behavior, and reliability of the delivery in one decision system. When applied to a real-life railway route, the optimization of technological sequences is demonstrated to decrease delivery time and congestion rates significantly, as well as decrease the possibility of punishment in case of late deliveries. These findings show that the study is original in terms of the presentation of a data-driven and operationally based approach on the enhancement of railway freight performance. This study introduces a shipment-type-specific intelligent delivery model that integrates queuing theory with real station technological processes. Unlike existing approaches focused mainly on routing or average travel time, the proposed framework explicitly accounts for wagon processing sequences, re-handling operations, and delay-risk assessment. Validation on the Khamza–Bukhara corridor demonstrates a reduction in intermediate re-handlings from four to two and total delivery time from 68 h to 54 h, confirming the operational and economic effectiveness of the model.
High-pressure high-temperature synthesis of WC-Co composites: overcoming the hardness-toughness tradeoff through thermobaric processing Ziyoda Mukhamedova, Sherzod Fayzibayev, Oleg Ignatenko, Rustam Kuchkarbayev Vibroengineering Procedia, 2025 This study presents a novel high-pressure, high-temperature (HPHT) synthesis route for WC-Co cemented carbides, aiming to overcome the classic hardness-toughness trade-off. WC-Co composites were synthesized directly from elemental W, C, and Co under thermobaric conditions (4-8 GPa, 1200-2200 °C), enabling in situ WC formation and densification in a single step. Structural characterization (XRD, SEM, TEM), mechanical testing (hardness, fracture toughness, wear resistance), and electrophysical analysis (resistivity, magnetic saturation) were performed. The synthesized composites achieved 13-15 GPa hardness and 12-14 MPa·m 1/2 fracture toughness, surpassing typical WC-6Co grades (12-14 GPa hardness and 8-11 MPa·m 1/2 toughness). These findings demonstrate that HPHT synthesis yields dense, homogeneous WC-Co materials with superior balance of mechanical properties and thermal stability, providing a viable alternative to conventional sintering.
Mathematical modeling of fastening conditions in piggyback transport: ensuring safety and stability across different transport modes Ziyoda Mukhamedova, Diyor Boboyev, Shukhrat Saidivaliev, Rustam Abdullaev, Jamshid Kobulov, et al. Discover Applied Sciences, 2025 Ensuring cargo stability during piggyback transportation is crucial for maintaining safety and efficiency, especially in intermodal transport systems. This study focuses on developing a mathematical model to optimise the fastening methods for vehicles transported on railway platforms. This study has employed Newtonian mechanics and the D'Alembert principle to analyse how different forces, such as gravity, inertia, aerodynamic resistance, and centrifugal forces, affect the stability of semi-trailers while in motion. Systematic algorithms and simulation tools, such as MATLAB, were utilised to determine how speed and external factors affected the forces acting on the fasteners and the resulting movement of the cargo. The findings indicate a strong correlation between speed and the forces exerted on fasteners, emphasising the need for adaptive fastening solutions and moreover, increasing the number of fastening points significantly reduced cargo displacement, thereby improving stability. These findings offer practical insights for optimising piggyback transportation systems, enhancing both cargo safety and operational efficiency. Recommendations include further research into advanced fastening materials and the validation of theoretical models through field studies.
Hybridization of ADM-Type Rail Service Cars for Enhanced Efficiency and Environmental Sustainability Ziyoda Mukhamedova, Ergash Asatov, Rustam Kuchkarbaev, Gulamova Madina, Dilbar Mukhamedova World Electric Vehicle Journal, 2025 The hybridization of ADM-Type Rail Service Cars aims to enhance energy efficiency, environmental sustainability, and cost-effectiveness within Uzbekistan’s railway network. Diesel-powered service cars currently contribute to high fuel consumption, elevated emissions, and costly maintenance, necessitating a transition to hybrid technology. This study introduces an innovative “sequence of linear sets–torsion electric motor–wheel pairs” design, optimizing torque distribution and power efficiency for improved operational reliability. Through system modeling, performance simulations, and real-world field trials, the hybrid system demonstrates a 15% reduction in energy consumption, a 25% decrease in CO2 emissions, and up to 30% lower maintenance costs compared to conventional diesel models. Additionally, the hybrid technology enhances operational flexibility, allowing seamless functionality on both electrified and non-electrified railway lines. From an economic perspective, retrofitting existing service cars instead of full fleet replacement provides a cost-effective alternative, offering an estimated 10-year return on investment (ROI) through fuel savings and reduced downtime. This initiative directly supports Uzbekistan’s Green Development Strategy and railway modernization plans while holding significant commercialization potential in Central Asia and other regions with aging railway infrastructure. By addressing technical scalability, regulatory compliance, and economic feasibility, this study proposes a practical and timely hybrid retrofit solution for sustainable railway operations, aligning current industry needs with long-term environmental and financial benefits.
Assessment of options for the location of railway infrastructure facilities Gushan Ibragimova, Ziyoda Mukhamedova, Sakijan Khudayberganov, Shuhrat Buriyev, Shokhrukh Kayumov, et al. Discover Applied Sciences, 2025 This article discusses a methodology for assessing optimal cargo facility placement, focusing specifically on evaluating regional attractiveness in Uzbekistan through an integrated attractiveness index. By adapting existing methods to fit Uzbekistan's unique context, the proposed approach becomes more universally applicable to other regions as well. The study introduces a new model that accounts for uncertainty and incorporates multicriteria decision-making, enabling stakeholders to select the most suitable alternatives. A hierarchical goal tree, which clearly identifies weighted factors and equivalent criteria, ensures transparency and validity throughout the decision-making process. This method provides numerous benefits for various stakeholders, including administrators and investors, by clearly outlining potential gains and losses associated with placing logistics centers. The article demonstrates practical application by analyzing placement decisions for logistics facilities within Uzbekistan's railway network, applying a comprehensive, multicriteria evaluation approach. The hierarchical model simplifies the selection process by simultaneously considering multiple parameters and selection criteria, ensuring a thorough assessment. Strategic placement of logistics facilities improves regional competitiveness, stimulates economic growth, and creates new employment opportunities. The methodology presented in this study offers valuable insights for future research and practical implementation, demonstrating its relevance in a modern economy and rapidly evolving logistics sector. Ultimately, the proposed model holds significant potential to enhance logistics infrastructure and support Uzbekistan’s broader economic development goals.
Hybridization of Rail Service Cars Type ADM for Enhanced Efficiency and Environmental Sustainability International Conference on Thermal Engineering, 2025
Prospects of Using Blockchain Technology in the Organization of the Transportation Process and Supply Chain International Journal of Intelligent Systems and Applications in Engineering, 2024
APPRAISAL RELIABILITY OF ELECTROMECHANICAL EQUIPMENT OF RAIL SERVICE CAR Ziyoda Mukhamedova Gafurdjanovna, Sherzod Fayzibayev Sabirovich, Dilbar Mukhamedova Gafurdjanovna, Gulshan Ibragimova Ruslanovna, Shokhrukh Kayumov Sharof Ogli Communications Scientific Letters of the University of Zilina, 2024
AN ALGORITHM FOR COMPUTER-AIDED DESIGN OF A TECHNOLOGICAL PROCESS WITH PRESET MANUFACTURABILITY PARAMETERS Procedia Environmental Science Engineering and Management, 2022
Modelling of fluctuations in the main bearing frame of railcar International Journal of Modern Manufacturing Technologies, 2016
RECENT SCHOLAR PUBLICATIONS
Evaluating skill acquisition in primary education in Uzbekistan through STEAM-based learning approaches G Mukhamedov, Z Mukhamedova, D Mukhamedova, G Fuzailova, ... Discover Education , 2026 2026
A reproducible Monte Carlo simulation of an inland railway container terminal under stochastic arrival and finite yard capacity constraints Z Mukhamedova, D Boboyev, N Akhmatov, S Sattorov, R Bozorov, ... Discover Applied Sciences 8 (4), 433 , 2026 2026
Factors driving Uzbek-Chinese railway transport relations: A correlation analysis Z Mukhamedova, S Akhmedov, M Gulamova AIP Conference Proceedings 3374 (1), 060023 , 2026 2026
Modeling of Delivery Infrastructure for Solving Problems by Type of Goods J Barotov, Z Mukhamedova, J Kobulov, R Tursunkhodjaeva, ... Systems 14 (2), 184 , 2026 2026
СОВЕРШЕНСТВОВАНИЕ СИСТЕМЫ КОНТЕЙНЕРНЫХ ПЕРЕВОЗОК НА ЖЕЛЕЗНОДОРОЖНОМ ТРАНСПОРТЕ НА ОСНОВЕ ИННОВАЦИОННЫХ КОНСТРУКЦИЙ КОНТЕЙНЕРОВ ЗГ Мухамедова Shokh Articles Library 1 (2) , 2025 2025
High-pressure high-temperature synthesis of WC-Co composites: overcoming the hardness-toughness trade-off through thermobaric processing Z Mukhamedova, S Fayzibayev, O Ignatenko, R Kuchkarbayev Vibroengineering Procedia 60, 533-541 , 2025 2025
Ko ‘cha chetida turargoh qidirgan avtomobillarning tirbandlikdagi ulushini hisoblash uslubi G Xalilova, A Raxmonov, R Samatov Journal of Transport 2 (1), 134-138 , 2025 2025
Experimental study on fatigue behavior of casting beams in railway applications Z Mukhamedova, S Mamayev, S Fayzibayev, O Kasimov, ... Journal of Infrastructure Preservation and Resilience 6 (1), 38 , 2025 2025
Search for Possible Options for Improving the Organization and Functional Reliability of the Station ZG Mukhamedova, GR Ibragimova, AT Kibishov, AM Bashirova, ... Sustainable Development of Transport: Economy, Transformation, Logistics and … , 2025 2025
and Functional Reliability of the Station ZG Mukhamedova, GR Ibragimova Sustainable Development of Transport: Economy, Transformation, Logistics and … , 2025 2025
OʻRTA OSIYODA TEMIR YOʻL TRANSPORTI KORIDORLARI VA BUYUK IPAK YOʻLINI QAYTA TIKLASHNING TAHLILI MZ Gafurdjanovna, YX Maratovich TANQIDIY NAZAR, TAHLILIY TAFAKKUR VA INNOVATSION G ‘OYALAR 2 (2), 20-25 , 2025 2025
Leveraging IT Solutions for Enhancing Reliability in Piggyback Transportation Systems Z Mukhamedova, G Ibragimova, Z Yakupbaev Proceedings of International Conference on Applied Innovation in IT 13 (2 … , 2025 2025
Mathematical modeling of fastening conditions in piggyback transport: ensuring safety and stability across different transport modes Z Mukhamedova, D Boboyev, S Saidivaliev, R Abdullaev, J Kobulov, ... Discover Applied Sciences 7 (6), 619 , 2025 2025 Citations: 3
Hybridization of ADM-Type Rail Service Cars for Enhanced Efficiency and Environmental Sustainability Z Mukhamedova, E Asatov, R Kuchkarbaev, G Madina, D Mukhamedova World Electric Vehicle Journal 16 (5), 260 , 2025 2025
Assessment of options for the location of railway infrastructure facilities G Ibragimova, Z Mukhamedova, S Khudayberganov, S Buriyev, ... Discover Applied Sciences 7 (5), 364 , 2025 2025 Citations: 1
ИЗВЕСТИЯ ПЕТЕРБУРГСКОГО УНИВЕРСИТЕТА ПУТЕЙ СООБЩЕНИЯ ЗГ МУХАМЕДОВА, СХ АХМЕДОВ ИЗВЕСТИЯ 22 (2), 373-382 , 2025 2025
MAXSUS O ‘ZIYURAR HARAKAT TARKIBINING ELEKTROMEXANIK JIHOZLARI ISHONCHLILIGINI BAHOLASH MZ Gafurdjanovna, GM Djavdatovna, AS Xurmatbekovich Илм-фан ва инновацион ривожланиш/Наука и инновационное развитие 8 (3), 81-95 , 2025 2025
РАЗРАБОТКА ТРАНСПОРТНО-ЛОГИСТИЧЕСКОЙ СИСТЕМЫ УЗБЕКИСТАНА И ГРАФИКА ДВИЖЕНИЯ КОНТРЕЙЛЕРНЫХ ПОЕЗДОВ ЗГ Мухамедова, СХ Ахмедов, ГМ Юлдашова Известия Транссиба, 124-132 , 2025 2025
Determination of Residual Life of a Diesel Assembly Rail Service Car Z Mukhamedova, S Fayzibayev, E Mamut, S Setimbetova, G Yuldashova International Conference on Mathematical Modeling in Physical Sciences, 795-803 , 2024 2024
Calculating the fatigue strength of load-bearing structures of special self-propelled rolling stock Z Mukhamedova, S Fayzibayev, D Mukhamedova, AM Batirbekova, ... Scientific Reports 14 (1), 19205 , 2024 2024 Citations: 13
MOST CITED SCHOLAR PUBLICATIONS
Modelling of fluctuations in the main bearing frame of railcar ZG Mukhamedova International Journal of Modern Manufacturing Technologies 8 (2), 48-53 , 2016 2016.0 Citations: 50
Mathematical model for calculation of oscillations in the main bearing frame of railcar with changing stiffness and physical parameters M Ziyoda Журнал Сибирского федерального университета. Техника и технологии 10 (5 … , 2017 2017.0 Citations: 43
Mathematical model of oscillations of bearing body frame of emergency and repair railcars G Khromova, Z Mukhamedova, I Yutkina Transport problems 12 , 2017 2017.0 Citations: 33
Development of generalized dynamic model of oscillations of the main frame and running gear of rail service cars Z Mukhamedova Transport Problems 711 , 2015 2015.0 Citations: 30
Analysis of optimal periodicity of preventive maintenance of rail service car taking into account operational technology YM Sagatovich, MZ Gafurdjanovna European science review, 167-170 , 2018 2018.0 Citations: 28
Динамическая модель для исследования продольных колебаний главной рамы электровоза с учетом установки демпфирующего поглощающего аппарата в автосцепке ЗГ Мухамедова Известия Транссиба, 18-23 , 2015 2015.0 Citations: 28
Optimization of dynamic characteristics of emergency rail service cars. Monograph GA Khromova, ZG Mukhamedova, IS Yutkina ISBN 978-9943-975-966.-Tashkent:" Fan va tekhnologiya", 2016.-253 p , 0 Citations: 27
Динамика и прочность транспортной системы для перевозки легковесных грузов АД Глущенко, ЕВ Сливинский Ташкент: Фан , 1988 1988.0 Citations: 25
Methodological aspects of continuous controlling and diagnostics traction electrical equipments using methods of spectral analysis MS Yakubov, ZG Muxamedova, US Isroilov, JS Fayzullaev Chemical Technology, Control and Management 2018 (1), 85-90 , 2018 2018.0 Citations: 24
Оптимизация динамических характеристик аварийно-восстановительных автомотрис ГА Хромова, ЗГ Мухамедова, ИС Юткина Монография. Научный журнал:«Fan va texnologiya», Ташкент-2016.-253 c.[In , 2016 2016.0 Citations: 22
Analysis and assessment of power efficiency of special self–propelled railway rolling stock ZG Mukhamedova Journal of Advanced Research in Dynamical and Control Systems 12 (2), 2808-2814 , 2020 2020.0 Citations: 21
Methodological aspect of continuous monitoring of traction electrical equipment diagnostics using spectral analysis methods MS Yakubov, ZG Mukhamedova, US Isroilov, S Fayzullaev Zh International periodical journal" Chemical Technology Control and Management … , 2018 2018.0 Citations: 21
Improving the design concepts of equipment for the assembly platform of a rail service car considering reliability rates and real state Z Mukhamedova, S Fayzibaev, Z Ergasheva AIP Conference Proceedings 2432 (1), 030052 , 2022 2022.0 Citations: 20
Regulation of departure time of freight wagons from stations and optimization of delivery time of freight wagons from stations JR Kobulov, ZG Muxamedova, JS Barotov Monografia pokonferencyjna: Science, research, development 303, 307 , 2019 2019.0 Citations: 19
Prospects of using blockchain technology in the organization of the transportation process and supply chain Z Mukhamedova, D Mukhamedova Int. J. Intell. Syst. Appl. Eng 12, 379-387 , 2023 2023.0 Citations: 17
Reliability improvement of special self-propelled rolling stock based on its technical diagnostics MZ Gafurdjanovna Journal of Critical Reviews 7 (12), 186-189 , 2020 2020.0 Citations: 17
Перспективы использования технологии блокчейн в организации перевозочного процесса и цепочке поставок ЗГ Мухамедова, ВД Осадчук, АУ Тулаев Известия Транссиба, 142-156 , 2022 2022.0 Citations: 16
Dynamics of development of cargo transportation in Uzbekistan Z Mukhamedova, Z Ergasheva, V Ergasheva, R Abdullaev, ... E3S Web of Conferences 402, 01017 , 2023 2023.0 Citations: 15
An algorithm for computer-aided design of a technological process with preset manufacturability parameters D Ishenin, S Govorkov, I Teslenko, M Klykov, O Kabanov, E Lyalin, ... Procedia Environmental Science, Engineering and Management 8 (4), 733-738 , 2021 2021.0 Citations: 15
Creation of transport and logistics clusters on railway networks Z Mukhamedova, G Ibragimova, S Khudayberganov, A Bashirova, ... E3S Web of Conferences 401, 03042 , 2023 2023.0 Citations: 14
