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Water supply from groundwater: new solutions for a battered-and-bruised Ukraine

Water Supply 2025年第3期25卷 617-627页

作者： Sudakov, Andrii Pavlychenko, Artem Hapich, Hennadii Isakova, Mariia Shumov, Andrii Dnipro University of Technology Dnipro Ukraine Dnipro State Agrarian and Economic University Dnipro Ukraine

We present improved technology for alternative water supplies for Ukraine during martial law and post-war reconstruction. Sugar-bonded gravel filters for well screens reduce the consumption of material and time for their transportation to the site, and avoid sanding and the formation of voids, thereby reducing hydraulic resistance. Our results facilitate on-site production of block gravel filters using sugar as a binding agent for fine-and-medium-grained sands that constitute the effective component of the filterblock. We explore the constraints on installing such a filter to depths as great as 200 m. © 2025 The Authors.

关键词： Gravel

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Control valve simulation method integrable into the global gradient algorithm

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ISH Journal of Hydraulic Engineering 2025年第1期31卷 1-7页

作者： Sivakumar, P. Gorev, N.B. Gorev, V.N. Kodzhespirova, I.F. Shedlovsky, I.A. Itanagar India Department for Functional Elements of Control Systems Institute of Technical Mechanics Dnipro Ukraine Department of Physics Dnipro University of Technology Dnipro Ukraine Department of Automation and Computer Systems Dnipro University of Technology Dnipro Ukraine

This paper presents a refinement of a method that simulates flow- and pressure-regulating valves by replacing them with pipes and adjusting the resistances (diameters) of those pipes to meet the valve settings. The method, referred to as the replacing pipe method (RPM), is readily integrable into the global gradient algorithm, which is the heart of the commonly used EPANET 2 water distribution system modeling software. The RPM proved to be more robust, yet slower than the EPANET 2 valve handling heuristics. In this work, the RPM was modified to increase its computational speed. The modification involved the RPM check valve handling algorithm and condition for updating the diameters of the valve-replacing pipes. The modified RPM was tested as part of a hybrid simulator, which switches from the EPANET 2 valve handling heuristics to the RPM when the former fails. The test networks included a large network with thousands of nodes, pipes, and valves, and a case of an ill-posed problem. As the testing showed, the modified RPM offers a significant reduction in the number of iterations compared to its previous version. © 2024 Indian Society for Hydraulics.

关键词： Safety valves

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Prerequisites for using trace and rare-earth elements from the fly ash of Ukrainian thermal power stations

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International Journal of Environmental Studies 2025年第2期82卷 778-788页

作者： Kharytonov, Mykola Berezniak, Oleksandr Klimkina, Iryna Rula, Iryna Eckart, Sven Guhl, Stefan Wiche, Oliver Department of Chemistry Dnipro State Agrarian and Economic University Dnipro Ukraine Department of Ecology and Environmental Technology Dnipro University of Technology Dnipro Ukraine Institute of Thermal Engineering and Thermodynamics Freiberg Technical University Freiberg Germany Gasification Systems Department Freiberg Technical University Freiberg Germany Applied Geoecology Group Görlitz University of Applied Sciences Zittau Zittau Germany

The rare-earth element (REE) concentrations, outlook coefficient and critical parameters of coal fly ash (CFA) samples from three Ukrainian thermal power stations–Prydniprovska, Zmiivska and Kryvorizka TPS–are favourable for recovery of rare-earth elements, particularly following flotation treatment to remove unburnt carbon which also improves their performance as a component of concrete. Unburnt carbon was characterised by differential thermal analysis. The greatest hazard was connected with CFA from the now destroyed Zmiivska TPS;the contents of Cd, Sn, Sb, Pb and As were 2–6 times the world coal-ash-average;maximum levels of Mo, Ga and V were also observed in Zmiivska ash. The lithium content of CFA from Zmiivska and Kryvorizka TPS, and one fraction of Prydniprovska TPS ash (40–125 μm) exceeded world average values almost 2–3 times. In all samples, light REE (La, Ce, Pr, Nd and Sm) preponderate compared to middle REE (Eu, Gd, Tb, Dy and Y) and high REE (Ho, Er, Tm, Yb and Lu);the ratio of light to heavy REEs ranged from 18 to 32. The studied CFAs can be considered as a secondary source of REEs since critical elements comprise ≥ 30%. © 2025 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Flotation

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Information system to enhance agricultural production efficiency based on sustainable development principles 1

Information system to enhance agricultural production effici...

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1st International Workshop on Advanced Applied Information Technologies, AdvAIT 2024

作者： Hnatushenko, Volodymyr Shuleshko, Victor Bulana, Tetiana Molodets, Bohdan Dnipro University of Technology 19 av. Dmytra Yavornytskoho Dnipro49005 Ukraine

The increasing global demand for sustainable agricultural practices necessitates innovative solutions to optimize resource use and minimize environmental impact. This paper presents the information technology developed to automate and optimize the operation of a hydroponic system to improve energy and resource efficiency in sustainable agriculture. An automated control platform at the system's base continuously monitors key environmental parameters within the hydroponic facility, including water level, nutrient distribution, lighting, and energy consumption. The system can precisely regulate the processes by collecting real-time data on these variables, providing ideal conditions for plant growth. The hydroponic system is equipped with a set of sensors and actuators that control water flow, fertilizer supply, and lighting according to the needs of each plant. The developed spectral composition is based on combining the spectra of HPS and two peaks of photosynthetic efficiency. This combination of the spectrums complements each other, which allows photosynthesis to proceed as efficiently as possible. The system makes it possible to save up to 25% of electricity consumption without losing quality and quantity characteristics, to reduce the number of hours of illumination, and to be placed in cost-effective climatic conditions. © 2024 Copyright for this paper by its authors.

关键词： Hydroponics

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Information technologies in IT education as a factor of digitalization of Ukrainian society* 1

Information technologies in IT education as a factor of digi...

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1st International Workshop on Advanced Applied Information Technologies, AdvAIT 2024

作者： Sokolova, Natalya Hnatushenko, Volodymyr Dnipro University of Technology 19 av. Dmytra Yavornytskoho Dnipro49005 Ukraine

The article investigates the digitization of Ukrainian society, the role of digital skills in labor market demand, digital literacy among the population, and the key audience of educators - teenagers. It outlines the approaches and experiences of the Department of Information technology and Computer Engineering at dnipro university of technology in transforming IT education. It specifically examines the teaching of programming courses to first-year students to build foundational competencies for continued learning and the use of digital technologies in training specialists for government bodies. The article also highlights the integration of Cisco International Network Academy courses into the curriculum and the training of specialists through educational partnership projects with businesses. © 2024 Copyright for this paper by its authors.

关键词： Curricula

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Analytical review of interactive technologies for teaching cybersecurity skills 3

Analytical review of interactive technologies for teaching c...

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3rd International Conference on Cyber Hygiene and Conflict Management in Global Information Networks, CH and CMiGIN 2024

作者： Klymenko, Svitlana Konko, Vitaliy Klymenko, Oleksii Hnatushenko, Volodymyr Bychkova, Marina Oles Honchar Dnipro National University Gagarin Ave. 72 Dnipro49000 Ukraine Dnipro University of Technology Dmytra Yavornytskoho Ave. 19 Dnipro49005 Ukraine

The article discusses issues related to the development of educational platforms, the main feature of which is the use of an interactive sandbox, on the basis of which the features of information technology, computer engineering and cybersecurity are studied. An analysis of existing educational platforms and CTF platforms was carried out. Based on the analysis, the disadvantages and advantages of existing platforms were identified and the tasks of developing a more modern interactive platform for teaching and researching problems in the field of cybersecurity were identified. The distinctive features of the new platform are presented, which will be useful to those who research cybersecurity methodology in order to develop preventive systems in the information technology industry to minimize damage to business. © 2025 Copyright for this paper by its authors.

关键词： computer engineering cybersecurity education information technology platform

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On the Use of the Kolmogorov-Wiener Filter for Heavy-tail Process Prediction

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Journal of Cyber Security and Mobility 2025年第3期12卷 315-338页

作者： Vyacheslav Gorev Alexander Gusev Valerii Korniienko Yana Shedlovska Dnipro University of Technology Dnipro Ukraine

This paper is devoted to the investigation of the applicability of the Kolmogorov-Wiener filter to the prediction of heavy-tail processes. As is known, telecommunication traffic in systems with data packet transfer is considered to be a heavy-tail process. There are a lot of rather sophisticated approaches to traffic prediction; however, in the rather simple case of stationary traffic sophisticated approaches may not be needed, and a simple approach, such as the Kolmogorov-Wiener filter, may be applied. However, as far as we know, this approach has not been considered in recent papers. In our previous papers, we theoretically developed a method for obtaining the filter weight function in the continuous case. The Kolmogorov-Wiener filter may be applied only to stationary processes, but in some models telecommunication traffic is treated as a stationary process, and thus the use of the Kolmogorov-Wiener filter may be of practical interest. In this paper, we generate stationary heavy-tail modeled data similar to fractional Gaussian noise and investigate the applicability of the Kolmogorov-Wiener filter to data prediction. Both non-smoothed and smoothed processes are investigated. It is shown that both the discrete and the continuous Kolmogorov-Wiener filter may be used in a rather accurate short-term prediction of a heavy-tail smoothed stationary random process. The paper results may be used for stationary telecommunication traffic prediction in systems with packet data transfer.

关键词： Wiener filters Heavily-tailed distribution Gaussian noise Telecommunication traffic Predictive models Data transfer Data models Random processes Noise measurement Computer crime

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Choosing a Technical Means from the Set of Alternatives by the Method of Gray Relational Analysis (on the Example of a Truck Trailer) 2nd

Choosing a Technical Means from the Set of Alternatives by t...

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2nd International Scientific Conference Intelligent Transport Systems: Ecology, Safety, Quality, Comfort, ITSESQC 2024

作者： Tsopa, Vitalii Cheberyachko, Serhii Deryugin, Oleh Litvinova, Yana Pustovoi, Dmytro International Institute of Management Shulyavska Street 10/12 V Kyiv04116 Ukraine Dnipro University of Technology Dmytro Yavornytskyi Avenue 19 Dnipro49005 Ukraine

ISBN: (纸本)9783031873782

The goal is to develop the algorithm for determining the effective technical means with a set of alternative methods of gray relational analysis (using the example of a truck trailer). Methods. To select technical means, close to the target (reference) indicators from a set of alternatives, we will use the method of gray relational analysis, which allows us to determine the best alternative of the technical means based on the analysis of actual and target (reference) indicators as selection criteria. The results. The process of determining the technical result from a set of alter-natives by the method of gray relational analysis has been developed, which involves the evaluation of actual indicators with target (reference) indicators to ensure the selection of the best alternative. It is proposed to determine the coefficient of gray analysis for each group of actual indicators of the technical means, to reduce the influence of the human factor with the necessary ranking. An example of choosing a truck (a truck trailer) from six alternatives for transporting cargo in the warehouse of a freight train is given, based on the given target indicators. The scientific novelty consists in increasing the reliability of management decision-making when solving multi-criteria problems of choosing and justifying the best alternative of technical means using the method of gray relational analysis. Practical value. An algorithm for selecting and substantiating the best alternative of the technical result based on target (reference) indicators as selection criteria has been developed. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Freight transportation

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Sustainable management of iron ore extraction processes using methods of borehole hydro technology

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International Journal of Mining and Mineral Engineering 2025年第1期16卷 92-112页

作者： Kosenko, Andrii Khomenko, Oleh Kononenko, Maksym Polyanska, Alla Buketov, Valentyn Dychkovskyi, Roman Polański, Jaroslaw Howaniec, Natalia Smolinski, Adam Department of Rock Mass Condition Control Poliakov Institute of Geotechnical Mechanics National Academy of Sciences of Ukraine Symphyropilska Str. 15 DniproUA-490005 Ukraine Department of Mining Engineering and Education Dnipro University of Technology Yavornytskoho Ave. 19 DniproUA-49005 Ukraine Department of Transport Systems and Energy-Mechanical Complexes Dnipro University of Technology Yavornytskoho Ave. 19 DniproUA-49005 Ukraine Faculty of Management AGH University of Science and Technology al. Mickiewicza 30 Krakow30059 Poland Institute of the Center of Renewable Energy and Energy Efficiency Universidad Nacional de San Agustin de Arequipa San Agustin Street 107 ArequipaPE-04000 Peru Faculty of Science and Technology Institute of Chemistry University of Silesia Szkolna 9 Katowice40-006 Poland Department of Energy Saving and Air Protection Central Mining Institute Plac Gwarkow 1 Katowice40-166 Poland

The development of rich iron ore deposits in the Kryvyi Rih Basin is carried out by underground methods at considerable depths. This mining method is characterised by high labour, capital and operating costs. In the paper, the experimental research on the establishment of rational parameters of borehole hydrotechnology for the sustainable management of iron ore extraction processes of martite ore deposits at considerable depths. Based on the experimental studies, mathematical expressions have been derived to calculate the rational parameters for borehole disintegration of martite ore masses using rotating water jets. Dependencies between the structural and morphological characteristics and the fracturing of martite ores, as well as the parameters of influence of water control, were identified. It was found that the use of borehole hydrotechnology ensures selective exposure of ore-forming minerals. As a result, the ore quality is improved and the silica mass fraction is reduced, which enables the production of the highest quality iron ore raw materials – superconcentrates. In addition, this technology is a combined ore preparation process that includes beneficiation, grinding, and classification of destruction products based on their particle size composition during their washing. Copyright © 2025 Inderscience Enterprises Ltd.

关键词： Iron ores

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A computerized method for predicting the risk of powdery mildew in wheat based on software analysis of soil and climatic monitoring data 1

A computerized method for predicting the risk of powdery mil...

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1st International Workshop on Advanced Applied Information Technologies, AdvAIT 2024

作者： Diachenko, Grygorii Laktionov, Ivan Moroz, Dmytro Derzhevetska, Maryna Semenov, Sergii Dnipro University of Technology av. Dmytra Yavornytskoho 19 DniproUA49005 Ukraine Technical University "Metinvest Polytechnic" Southern Highway 80 ZaporizhzhiaUA69008 Ukraine

Today, smart agriculture is one of the core technologies for sustainable development and increasing the efficiency of open-field crop production enterprises of various sizes and forms of ownership in the face of changing climate conditions. The development and implementation of computerized methods and intelligent software and hardware solutions for transforming large volumes of agroclimatic data distributed in time and space is a relevant and important field for improving the efficiency of information technologies for agrotechnical applications. In this article, the scientific and applied problem of creating and validating a computerized method for predicting the probability of occurrence of crop diseases at the pre-symptomatic stage, which forms the basis of software and hardware components for processing data from agromonitoring systems based on fog architecture, has been solved. The main results of the research are: reduction of the number of informative features to five based on the Harris Hawk Optimizer algorithm, proving the effectiveness of Bagged Trees and Medium Neural Network algorithms in the classification of Powdery Mildew in Wheat, synthesis and testing of a computer model in Simulink that implements a full cycle of transformation of agroclimatic monitoring data in predicting the Risk of Powdery Mildew in Wheat. In addition, prospective directions for further research to improve the efficiency of information technologies for predicting the probability of crop diseases are substantiated in the article. © 2024 Copyright for this paper by its authors.

关键词： Digital storage

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