Eastern-European Journal of Enterprise Technologies最新文献

{"title":"Development of a solution search method using a combined bio-inspired algorithm","authors":"Khudhair Abed Thamer, O. Sova, Olena Shaposhnikova, Volodymyr Yashchenok, I. Stanovska, Serhii Shostak, Oleksandr Rudenko, Serhii Petruk, Olha Matsyi, Svitlana Kashkevich","doi":"10.15587/1729-4061.2024.298205","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.298205","url":null,"abstract":"The object of the study is decision support systems. The subject of the study is the decision-making process in management problems using a combined bio-inspired algorithm, consisting of:\u0000– the improved wolf optimization algorithm and the improved sparrow search algorithm – for solving optimization problems regarding the object state;\u0000– an advanced genetic algorithm – for selecting the best agents in flocks;\u0000– an advanced training method – for deep training of agents to improve the optimization characteristics of agents.\u0000A solution search method using an improved bio-inspired algorithm is proposed. The method has the following sequence of actions:\u0000– input of initial data;\u0000– initialization of the search for a flock of sparrows and its parameters;\u0000– ranking and selection of sparrow agents using an advanced genetic algorithm;\u0000– updating the sparrow location for the discoverer;\u0000– checking the conditions for updating the position of sparrows;\u0000– initialization of additional search parameters;\u0000− running the gray wolf optimization algorithm;\u0000– training agents’ knowledge bases;\u0000– determining the amount of necessary computing resources of the intelligent decision support system.\u0000The originality of the proposed method lies in the combined use of bio-inspired algorithms, setting agents taking into account the uncertainty of the initial data, advanced global and local search procedures. The method makes it possible to increase the efficiency of data processing at the level of 19 % using additional improved procedures. The proposed method should be used to solve the problems of evaluating complex and dynamic processes in the interest of solving national security problems","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":"247 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140417606","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 effect of carbon black percentage on mechanical properties and microstructure of polybutylene terephthalate/polyamide 6/carbon black blends","authors":"Thi Hong Nga Pham, Phan Hieu Hua, Quoc Bao Ngo, Trong Kien Ha, V. Nguyen, Chi Thanh Nguyen, Quan Anh Pham","doi":"10.15587/1729-4061.2024.299067","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.299067","url":null,"abstract":"This study focuses on analyzing the influence of carbon black (CB) on Polybutylene terephthalate (PBT)/Polyamide 6 (PA6) blends. This study aims to solve the source of waste from toothbrush filament during production. This PBT/PA6 mixture does not meet the mechanical properties due to the incompatibility of these two plastics, which means this waste must be discarded and cannot be reused. When combined with CB, it creates a new type of plastic with more stable mechanical properties that can be applied in many areas of life and, at the same time, helps manufacturing businesses save on waste treatment costs. To create these PBT/PA6/CB blends, the research team used injection molding with a PBT/PA6 ratio of 75/25 combined with 0, 4, 8, and 12 % carbon black. The tensile and impact strength were tested according to the ASTM D638 and ASTM D256 standards. The results found that when adding 4 % CB to the PBT/PA6 plastic mixture, the tensile strength decreased from 34.9 to 34.8 MPa. Meanwhile, the tensile strength is improved when adding 8 % CB (35.3 MPa). At 12 % CB, a difference in tensile strength results, decreasing to 29.7 MPa. This result shows that the ratio 75/25 can give the best tensile strength value of the PBT/PA6 mixture with 8 wt. % CB. The impact strength was 3.5, 2.9, and 2.7 kJ/m2 according to 4, 8, and 12 % CB samples. Mechanical quality tests have shown that the tensile strength is improved when combining CB into the PBT/PA6 mixture, but the impact strength is reduced. SEM results show that most CB interacts with PBT/PA6 mainly because the PA6 particles are spherical and tend to separate easily from the mixture. The research found that increasing CB density worsens the bonding ability between PBT and PA6. These results help us provide experience for the most appropriate application for each purpose","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":"294 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140417976","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":"Determining the rational structure of multilayer technical fabric for woven power clamps","authors":"V. Shcherban’, Gennadij Melnyk, Marijna Kolysko, A. Kirichenko, Y. Shcherban’, Serhii Lukianenko, Ihor Ostashevskyi, Pavlo Vdovin","doi":"10.15587/1729-4061.2024.296839","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.296839","url":null,"abstract":"The object of research is multi-layered technical fabrics for woven power clamps. A task to determine the rational structure of a multi-layer technical fabric for power clamps has been solved, which makes it possible to achieve an effect when introduced into production through the minimization of raw material costs and the reduction of energy costs for manufacturing a unit of products. The value of the beating force, the tension of warp threads of the outer protective layers, the force layers, the warp threads for connecting the outer protective layers, and the force layers for two structures of multilayer technical fabric were studied. A comparative analysis of conditions for the formation of two multilayer fabrics from polyamide threads was carried out and a multilayer fabric with the most rational structure was selected, the formation of which would require less technological effort. Experimental studies have made it possible to build regression dependences on determining the influence of the initial tension of warp threads of the outer protective layers on the beating force value. The joint effect of the size of an overstep and the different tension of a shed on the beating force value was established, depending on the structure of a multilayer technical fabric. It is shown that when the tension of warp threads of the outer protective layers increases, the beating force value increases. A value of the tension of warp threads in outer protective layers, force layers, warp threads for connecting the outer protective layers and force layers in the position of an overstep and at the moment of thread beating was determined. Analysis of regression dependences will make it possible to determine the optimal loading parameters of the loom. It has been proven that the beating force value is affected by the structure of a multi-layer technical fabric and the tension of warp threads in outer protective layers. The improved multi-layer technical fabric is used for laying pipes with an external factory-made polyethylene coating","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":"12 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140418135","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":"Neutronic design of small modular long­life pressurized water reactor using thorium carbide fuel at a power level of 300–500 MWth","authors":"B. P. Lapanporo, Z. Su’ud, A. P. A. Mustari","doi":"10.15587/1729-4061.2024.290996","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.290996","url":null,"abstract":"This study presents the neutronic design of a small modular long­life Pressurized Water Reactor (PWR) using thorium carbide fuel with 233U fissile material. The target optimization for this study is a reactor designed to operate for 20 years, with excess reacti­vity throughout the reactor operational cycle consistently below 1.00 % dk/k. The analysis involves dividing the reactor core into three fuel regions with 233U enrichment levels ranging from 3 % to 8 %, with a 1 % difference for each fuel region. To achieve optimum conditions, 231Pa was randomly added to the fuel. The fuel volume fraction in this design varied from 30 % to 65 %, with a 5 % incremental variation. Power level variations are also studied within the 300–500 MWth with increments of 50 MWth. Calculations were performed using the Standard Reactor Analysis Code (SRAC) program with the PIJ and CITATION modules for cell and core calculations utilizing JENDL­4.0 nuclide data. Neutronic calculations indicate that the fuel with a 60 % volume fraction achieves optimum conditions at a power level of 300 MWth. The best performance was observed with a fuel volume fraction of 65 %, reaching optimum conditions across power levels ranging from 300 to 500 MWth. For the fuel with the best performance, the power density distributions for low and high power levels follow the same pattern radially and axially. The power peaking factor (PPF) for all fuel configurations approaching the optimum conditions remains below two, a safe limit for the PWR. Other neutronic safety parameters, such as the Doppler coefficient and void fraction coefficient, also stay within the safe limits for the PWR, with both values remaining negative throughout the reactor operational cycle","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":"7 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140418181","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":"Defining a selection procedure of CRM systems for the information-analytical support to the marketing activities at an enterprise","authors":"D. Raiko, Yuliia S. Shypulina, Liudmyla Potrashkova, N. Illiashenko, Viktoriia Bozhkova, Zoia Konokhova, Mariіa Miroshnуk, Szabolcs Nagy, S. Illiashenko, A. Abdunurova","doi":"10.15587/1729-4061.2024.298301","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.298301","url":null,"abstract":"The object of this study is digital marketing at an enterprise. The investigated problem is the lack of a sufficient level of systematic consideration of the task to use information communication systems and technologies in the marketing activities of enterprises. Availability of such a system would increase the company's potential in creating mutual value for the seller and the client when implementing relationship marketing technologies.\u0000It is shown that the information and analytical support of the enterprise's marketing activity can be presented as a tool of the enterprise's activity, functioning as an element of the enterprise's management system. Among the general criteria for choosing a CRM system, it is proposed to consider convenience and ease of use, flexibility of system settings for special business needs, price, simplicity. Such consideration of CRM systems and their capabilities provide economic effects that affect the profitability of the enterprise and prevent the impact of negative factors on the development of the company.\u0000The proposed procedure for choosing an adequate CRM system was verified on the example of a dental clinic, which made it possible to draw a conclusion about the feasibility of implementing a CRM system in the business under study. It is based on received estimates of short-term and long-term economic effects of the system's application. Calculated data are provided for support, which showed that the productivity of the administrator's work increased by 73.3 %, and the average duration of patient care by the doctor, taking into account the time of registration, decreased by 25 %. This is due to the fact that the system makes it possible to perform a quick search on the general electronic database, and the time saved at this stage can be spent on performing additional work","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":"8 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140418938","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":"Effect of variations in concrete quality on the crack width in rigid pavement","authors":"Wisnumurti Wisnumurti, A. Soehardjono, R. M. Simatupang","doi":"10.15587/1729-4061.2024.298680","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.298680","url":null,"abstract":"Cracks pose a significant issue in rigid pavement, leading to substantial damage. The manual mixing and casting of road pavement concrete underscore the importance of concrete quality as a critical parameter. This study investigates crack behavior by varying concrete quality. Loading is performed statically using line loads, shedding light on the impact of concrete quality on crack development. The concrete to be used has a quality fc' of 15 MPa, 25 MPa, and 35 MPa. The fine aggregate used in this study was Lumajang black sand, while the coarse aggregate used was machine crushed stone, and Portland Composite Cement (PCC) was used in all concrete mixes. The reinforcing steel used had a quality fy of 480 MPa, with a reinforcement ratio of ρ=0.010, which was converted to 5-D16 reinforcement. The subgrade density used to support the specimens had a CBR value of 10 %. Specimen dimensions were 2×0.6×0.2 m for length, width, and thickness. Pavement plates, 30 cm thick, were placed on leveled subgrade soil in a steel box set to achieve a 6 % CBR reading. Hydraulic jacks, monitored by a load cell, applied monotonic static loading with 2 kN intervals, reaching a maximum load of 200 kN. Steel tension and plate settlement were measured using a tension sensor and Linear Variable Differential Transformer (LVDT), respectively. A data logger recorded readings, and crack widths were captured by a digital microscope with 0.01 mm accuracy. Experimental results show that low concrete compressive strength values result in larger crack widths, and vice versa. Cracks also occur at earlier loading of concrete quality fc' 15 MPa. In addition, experiments show that the reinforcement stress value has a significant influence on crack width in specimens with low concrete quality","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":"59 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140419505","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":"Devising approaches to modeling enterprise business processes under conditions of modern digital technologies","authors":"Olena Arefieva, Z. Poberezhna, Svitlana Petrovska, Serhii O. Arefiev, Yuriy Kopcha","doi":"10.15587/1729-4061.2024.298143","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.298143","url":null,"abstract":"A study was conducted on modeling business processes at an enterprise under the conditions of modern digital technologies, which could make it possible to determine the level of digitization at the enterprise in general, minimize costs, optimize work, and enable business processes automation. The main and most important business processes at an enterprise require simulation on basic digital technologies. As part of the research, the main business processes at an enterprise under the conditions of digital technologies were formed, which make it possible to determine the level of efficiency of the enterprise from the implemented digital technologies and the ways that the enterprise should implement to improve it.\u0000It has been established that digitalization has a positive effect on a country's GDP level, the level of employment, and the growth of the population's well-being.\u0000A methodical approach to the formation of the company's strategy based on the modeling of business processes, taking into account digital technologies, has been devised. This approach, unlike existing ones, makes it possible to determine the necessary level of digitization and identify the scope of implementation of the implementation of digital technologies at the enterprise. This makes it possible to assess digitization at an enterprise and determine the most important business processes for its operation.\u0000Practical implementation of the proposed methodology was carried out for four transport industry enterprises. The most important business processes for enterprises have been determined. According to the results of the study, it was found that digital modeling and optimization of business processes has the greatest impact, which is (3.00) and shows the level of effectiveness of the implementation of digital technologies, as well as their orientation to the search for appropriate sources of financial resources","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":"55 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140420519","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":"Implementation of digital innovation on sustainability performance: the moderating role of green accounting in the industrial sector","authors":"Lisna Lisnawati, Titik Aryati, Juniati Gunawan","doi":"10.15587/1729-4061.2024.298639","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.298639","url":null,"abstract":"Innovation is the solution that allows digital transformation to be implemented in many industrial sectors. With digital innovation, companies can move more freely in achieving sustainability performance, because digitalization is a cross-border discipline. Empirical studies that directly link digital innovation, sustainability and accounting are still very limited. To fill this gap, this study aims to examine the role of green accounting in the influence of human capacity building, digital innovation, and sustainability strategy on sustainability performance. This study employs quantitative content analysis on the annual reports and sustainability in the industrial sector listed on the IDX 2021–2022, comprising a total of 792 observational data using the PLS. The research results indicate that an increase of 32 % in human capacity building, 14 % in digital innovation and 12 % in sustainability strategy has a significant impact on sustainability performance. Another finding shows the results that green accounting is only able to strengthen the influence of digital innovation on sustainability performance and the rest weakens and does not even have a role as a moderating variable. The implications of this study are theoretically the development of new measures of digital innovation for the industrial sector. The practical implications suggest that to enhance sustainability performance, digital innovation is needed, starting from a pervasive digital culture extending to various aspects, including digital products, services & solution, digital supply chains, and digital accounting. The implications of implementing green accounting for industries indicate a 6.9 percent increase in the influence of digital innovation on sustainability performance","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":"257 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140420800","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":"Identifying the risks of armed conflict impact on the ecosystem","authors":"Iryna Kyrpychova, K. Berezenko, Olena Bordiuhova, Serhii Skakovskyi, Nadiia Sopova, Yuliia Chupryna, Serhii Liubytskyi, Bohdana Komarysta, Vladyslav Bendiuh, O. Nosyriev","doi":"10.15587/1729-4061.2024.298430","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.298430","url":null,"abstract":"The object of the study is the territory that became the object of the influence of hostilities. The study is dedicated to finding ways to assess the state of ecosystems and ensure their stability in the conditions of military conflicts.\u0000The impact of military conflict on the environment is highlighted through the analysis of risks and losses in ecosystems.\u0000It has been studied that the intensity of armed conflicts determines the scale and degree of damage to ecosystems, and the use of destructive weapons leads to the direct destruction of natural environments and their components.\u0000It has been determined by an expert survey that the most significant changes in natural ecosystems are the biodiversity losses, deforestation, territorial changes and the destruction of natural objects (scores ≥9.0). Factors of low impact (score <6.75) are air pollution, erosion due to air pollution, biodiversity losses due to water pollution.\u0000The interrelationships between military actions and environmental pollution are studied for the importance of understanding these processes for effective management of environmental security during military conflicts.\u0000A mathematical and graphic model of material flows has been developed, which allows taking into account resource flows, pollution and losses in the ecosystem during armed conflicts.\u0000The model, tested in the Kyiv region, made it possible to determine the priorities of conservation and risk management. Analysis of 9,000 km2 revealed contaminated areas, in particular, in the southwestern and western directions.\u0000The practical use of the research results is in the development of strategies for minimizing and restoring the ecological consequences of armed conflicts. This can help improve the management of natural resources in the context of military operations and increase the resilience of ecosystems","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":"31 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140421487","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 concept of forming a system of change management in the domain of railroad passenger transportation in Ukraine under the conditions of war","authors":"V. Bobyl, Oleksii Matusevych, Maryna Dron, A. Taranenko","doi":"10.15587/1729-4061.2024.297067","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.297067","url":null,"abstract":"The object of research is railroad passenger transportation.\u0000The subject of research is a change management system.\u0000The problem to be solved is to improve the efficiency of railroad transport enterprises in the field of passenger transportation by introducing a change management system.\u0000In the study, the concept of the formation of a change management system in the field of passenger transportation of railroad transport in Ukraine under wartime conditions was devised. Since the conditions of war refer to a variety of emergencies, the concept of \"emergency situation\", its types, characteristics, and signs that describe its existence are considered. The conditions of emergencies are defined.\u0000The properties of total and hybrid war affect the fundamental features of the state management of railroad passenger transport in Ukraine, the work of state departments and railroad passenger transport management enterprises. Taking into account the peculiarities of each type of war and the principles of the state, a system of interconnection of the features and principles of the state management of railroad passenger transportation with possible aggressive changes under wartime conditions was built.\u0000Such a system is the core of the devised concept of formation and modeling a change management system in the field of railroad passenger transportation in Ukraine under war conditions. Within the framework of the concept, a strategy is formed – a set of actions during an emergency of a military nature.\u0000Based on this concept, in the future, it is possible to construct stages of research, the existence of which could make it possible to build a model of the concept, namely the processes of forming a system of changes","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":"111 7‐8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140422455","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}