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1

On the factors of resistance to Artificial Intelligence in the workplace and ways to counter them

Jaworek Magdalena Anna

Zeszyty Naukowe Politechniki Poznańskiej. Organizacja i Zarządzanie

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2025

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Nr 91

173--185

EN

The implementation of new technologies in organizations constitutes a change that involves both new opportunities and threats, causing natural resistance among some employees to its introduction. The aim of this work is to present a model for overcoming resistance among employees to new digital technologies based on artificial intelligence. A critical literature analysis was used as the research method. The starting point for the model developed here is the latest work by Golgeci et al. (2025), presenting three resistance factors: affective (fear and aversion to new technologies) and cognitive (sense of ineffectiveness). Based on the research results and the psychological mechanisms behind the presented resistance factors, possible ways of overcoming it at the individual and organizational level were selected. The first group includes a positive change in attitude towards work and an increase in the level of identification with technologies based on artificial intelligence among their users. The second group includes a democratic management style and improving employee competences in terms of using artificial intelligence in the workplace. The model presented here is a preliminary proposal and can be supplemented with additional elements, both in terms of resistance factors and ways of counteracting them; at the same time, it can serve as a conceptualization for future research.

PL

Wdrażanie nowych technologii w organizacjach jest zmianą, z którą wiążą się zarówno nowe możliwości, jak i zagrożenia wywołujące naturalny opór części pracowników przed ich wprowadzaniem. Celem niniejszej pracy jest przedstawienie modelu przełamywania oporu wśród pracowników wobec nowych technologii cyfrowych opartych na sztucznej inteligencji. Zastosowaną metodą badawczą była krytyczna analiza literatury. Punktem wyjścia opracowanego modelu jest najnowsza praca Golgeciego i zespołu (2025) wskazująca trzy czynniki oporu: o charakterze afektywnym (strach i awersja do nowych technologii) oraz poznawczym (poczucie braku skuteczności). Na podstawie wyników badań oraz psychologicznych mechanizmów stojących za przedstawionymi czynnikami oporu dopasowano możliwe sposoby jego przełamywania na poziomie indywidualnym oraz organizacyjnym. Do pierwszej grupy zaliczono pozytywną zmianę postawy wobec pracy oraz zwiększenie poziomu utożsamiania się z technologiami opartymi na sztucznej inteligencji wśród ich użytkowników, do drugiej – demokratyczny styl zarządzania oraz podnoszenie kompetencji pracowników pod kątem wykorzystania sztucznej inteligencji w miejscu pracy. Przedstawiony model jest wstępną propozycją i może być uzupełniony o dodatkowe elementy, zarówno po stronie czynników oporu, jak i sposobów przeciwdziałania im; jednocześnie może służyć jako konceptualizacja przyszłych badań.

2

The Implementation Potential of the Hybrid Hot Metal Desulfurization Model – The Transformation of Research Results into Technological Recommendations

Podolska-Loska Angelika, Falkus Jan

Journal of Casting & Materials Engineering

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2025

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Vol. 9, no. 4

59--65

EN

This study presents the development of a hybrid model for the desulfurization of hot metal using dual reagent injection of CaO and Mg, integrating thermodynamic equilibrium calculations with kinetic analysis based on Tank Theory. The objective is to provide practical technological recommendations that enable effective industrial application of the process. The model allows real-time simulation of sulfur concentration changes under varying parameters such as reagent dosage and mixing intensity, while an optimization module supports the selection of operating conditions by balancing desulfurization efficiency with material consumption and operational costs. The system adapts to changing technological conditions including feedstock composition and process temperature, ensuring flexibility in industrial practice. In addition to process control, the model incorporates economic evaluation by correlating reagent consumption with achieved technological outcomes, which enhances its practical value. The proposed solution represents a step toward intelligent desulfurization systems that combine the precision of physicochemical modeling with the adaptability of modern process control. Implementation of the hybrid model may lead to higher efficiency, reduced consumption of consumables, and stable achievement of target sulfur levels, thereby strengthening the economic competitiveness of iron production.

3

Information and Analytical System for Monitoring Gender Equality among university lecturers

Makulov Kaiyrbek, Chernyshova Daryna, Bogatyrova Kateryna, Geseleva Nataliia, Miniailo Viktoriia, Karpunin Ihor

International Journal of Electronics and Telecommunications

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2025

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Vol. 71, No. 1

189-196

EN

The authors offer the structure of the information-analytical system (IAS) for monitoring gender equality (MGE) among university staff (lecturers). The proposed architecture of the IAS MGE represents an integrated approach to collecting, analyzing and monitoring personnel data considering gender aspects. An additional criterion for monitoring gender equality in the selection of candidates for vacant positions in universities is proposed, which will reduce the likelihood of prejudiced decisions at the recruitment stage and create a more equitable university environment.

4

Drosophila melanogaster as a model organism for nanoparticle toxicity research

Łakomy Weronika, Myślińska Maria, Tarnawska Ewa, Kulig Karolina, Owczarzy Aleksandra, Rogóż Wojciech, Maciążek-Jurczyk Małgorzata

Engineering of Biomaterials

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2025

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vol. 28, no. 173

art. no. 2

EN

Nanotechnology is a rapidly developing interdisciplinary field that combines branches of science such as engineering, physics, chemistry, biology, computer science, biotechnology, medicine, and pharmacy. Due to the rapid growth of interest in nanotechnology, new methods are needed to study the effects of nanoparticles on living organisms. In combination with in vitro and in vivo studies on vertebrate animals, valuable research data can be obtained through in vivo studies on invertebrates. Drosophila melanogaster (D. melanogaster), widely known as the fruit fly, has long been a cornerstone of genetic and developmental biology research. Its popularity owes to the short life cycle and approximately 13,600 genes, many of which are homologous to human genes. In recent years, the use of D. melanogaster has also been extended to the rapidly growing scientific field of nanotechnology. As a model organism, D. melanogaster offers a unique combination of genetic tractability and conservativeness of biological pathways, making it an ideal candidate for studying the biological impacts of nanoparticles. This article discusses the types of nanoparticles as a drug delivery system, one of their classifications, and use in pharmacy. It also reviews the growing role of D. melanogaster in nanoparticle research, highlighting its potential to provide insights mainly into nanoparticle toxicity, biodistribution, and therapeutic applications.

5

Evolution of China’s "dual-carbon" policy: a content topic mining analysis of central government documents (2007-2024)

He Yiliu, Sun Jie, Tang Mincong, He Yu, Zhu Yabin

Ecological Chemistry and Engineering. S

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2025

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Vol. 32, nr 1

7--25

EN

This study examines the evolution of China’s "dual-carbon" policy framework from 2007 to 2024 through content topic mining. Using NLP and LDA topic modelling, we analysed 235 policy documents to identify four key topics: market mechanisms, monitoring systems, support systems, and emissions management. Our findings reveal shifts in policy intensity and topic focus over time, providing insights into China’s strategies for achieving carbon neutrality. This analysis highlights the importance of comprehensive support and monitoring systems and offers practical guidance for policymakers to strengthen the dual-carbon framework as China progresses towards its carbon targets.

6

Environmental pollution with polycyclic aromatic hydrocarbons contained in sewage sludge – the mathematical model

Włodarczyk-Makuła Maria, Włodarczyk Maciej, Bajdur Wioletta

Advances in Science and Technology. Research Journal

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2025

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Vol. 19, no. 8

260–272

EN

Sewage sludge constitutes waste generated during wastewater treatment in any treatment plant. Sludge that meets the quality conditions specified in the legal regulations, due to fertilising properties, can be used for natural purposes (use in the recovery process on the surface of the earth or for the reclamation cover of landfills). However, sewage sludge contains various organic microcontaminants, such as, for example, Polycyclic aromatic hydrocarbons (PAHs) that are toxic to aquatic and soil organisms, and the legal regulations do not specify the acceptable concentrations of these compounds. However, restrictions concerning PAHs in European legislation are proposed. The aim of the study was to use fractional order derivatives to develop a mathematical model describing changes in the concentration of polycyclic aromatic hydrocarbons (PAHs) in sewage sludge stored in natural conditions. The concentrations of selected PAHs were monitored for 3 months at fixed time intervals under conditions reflecting the use of sludge for natural purposes. A qualitative and quantitative analysis of PAHs was carried out using the GC-MS system. For the mathematical description of changes in the concentration values of individual compounds, fractional order derivatives were used and approximation was carried out using the classical equation of the first order. The developed mathematical model allows for predicting changes in PAH concentrations regarding sludge as well as determining the time necessary to obtain the required concentration of these compounds.

7

Using Interactive Decision Tree Models in Artillery Fuse Testing

Ampuła Dariusz

Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa

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2024

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Vol. 15, Nr 1 (55)

23--38

EN

In the introduction, the concept of interactive trees is defined and the purpose of the study is presented. Then, the RGM-2 fuse is described, as are the results of its tests which served as a basis for building specific models. The types of ammunition in which this variation of an artillery fuse is used are listed. A method of building interactive classification trees, allowing the author of the model to interfere with its structure, is described as well. Models of interactive classification trees, such as C&RT, CHAID and XAID have been designed and built. For each model, a tree diagram, a predictor importance sheet, a risk assessment sheet, and a summary of the observed and predicted values are presented. The method of interacting with the constructed classification tree structures, whose task was to improve the designed models, is shown using the examples of two models. The analysis of the models built after the interaction has been performed and, based on the obtained results, the best designed model was selected.

PL

W artykule we wstępie zdefiniowano pojęcie drzew interakcyjnych oraz określono cel artykułu. Następnie, scharakteryzowano zapalnik RGM-2, którego wyniki badań zostały przygotowane do budowy modeli oraz wskazano rodzaje amunicji w których występuje przedmiotowy zapalnik artyleryjski. Opisano metodę budowy interakcyjnych drzew klasyfikacyjnych, która umożliwia ingerencję autora modelu w jego strukturę. Zaprojektowano oraz zbudowano modele interakcyjnych drzew klasyfikacyjnych typu C&RT, CHAID oraz XAID. Dla każdego z modeli przedstawiono schemat zaprojektowanego drzewa, arkusz ważności predyktorów, arkusz oceny ryzyka oraz zestawienie wartości obserwowanych i wartości przewidywanych. Pokazano na dwóch modelach sposób interakcji w zbudowane struktury drzew klasyfikacyjnych, których zadaniem było poprawienie zaprojektowanych modeli. Dokonano analizy zbudowanych po interakcji modeli oraz na podstawie otrzymanych wyników, wskazano najlepszy zaprojektowany model.

8

Synthesis and Characterization of Novel Biochar Developed from Peganum Harmala Seeds to Adsorb Heavy Metals from Aqueous Solution

Khudair Douha Sabah, Abdulaziz Yasser I.

Journal of Ecological Engineering

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2024

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Vol. 25, nr 8

99--118

EN

Referring to the oil and industrial development, contamination of water streams and soil by heavy metals becomes severe issue. Biochar has consider as cheap and ecofriendly adsorbent for heavy metal ions removal. As well as, the development and modification of biochar has been a center point of many researches. In this study it has been suggested to develop novel biochar from Peganum harmala seed precursor and evaluate the heavy metal ions adsorption performance. Chemical activation process was adopted to prepare biochar with different concentrations (20%, 30%, and 40%) of phosphoric acid followed by pyrolysis in a laboratory horizontally tube furnace underneath an N2 blanket at 600°C for 3 hours. The physical and chemical properties of biochar have been assessed using Energy Dispersive X-ray Spectroscopy, X-ray diffraction, Scanning Electron Microscopy, pore structure, and Fouriertransform analysis. The prepared biochar was investigated to absorb three different heavy metal ions Fe(III), Ni(II) and Pb(II) from an aqueous solution under varied conditions. Heavy metal concentration (20–100 ppm), adsorbent dosage (0.25–0.75) g/L, contact duration (0–560 min), and solution pH (2–9) were examined. The results show that the largest BET surface area (691.58 m2/g) was achieved with activation conversation of 40% H3PO4 and 600°C for 3 hours, compared to other samples. The maximum adsorption capacities were 113.4096, 112.3355, 180.3478 mg/g for Fe(III), Ni(II) and Pb(II) respectively. Finally, Freundlich isotherm model shows better describe the adsorption equilibrium data, while adsorption kinetic data shows the pseudo-first-order model fits more with Fe(III) ions which shows that chemisorption was controlled in the adsorption process, additionally the pseudo-first-order model fits more with Pb(II) and Ni(II) ions this mean the physisorption has been controlled in the adsorption process.

9

MEMS Modeling in the Context of Inertial Navigation

Demkowicz Jerzy

International Journal of Electronics and Telecommunications

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2024

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Vol. 70, No. 4

887-893

EN

Underwater navigation is a research topic current undertaken in many areas of underwater research. The article presents an analysis resulting from MEMS modelling in the context of inertial navigation. The ideal approach was confronted with its limitations, but a non-linear approach, close to the real one, was also presented. Both models were compared in the context of inertial navigation. Random disturbances and their impact on linear and nonlinear dynamic systems, and in this context on Brownian noise motion, were also analysed. The linear velocity and displacement estimates generated by the presented models were compared to the ideal responses. The phenomenon of bifurcation in the context of inertial measurements is presented. Some of the analysis is performed on real data, but for greater clarity, some is performed on simulated data to highlight design issues and limitations.

10

Formation of Models for Registering Systemic Processes in The Digital Educational Environment of the University Based on Log File Analysis

Lakhno Valerii, Akhmetov Bakhytzhan, Makulov Kaiyrbek, Tynymbayev Bauyrzhan, Tsiutsiura Svitlana, Tsiutsiura Mikola, Chubaievskyi Vitalii

International Journal of Electronics and Telecommunications

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2024

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Vol. 70, No. 2

389--396

EN

It has been demonstrated that technologies and methods of intelligent data analysis (IDA) in the educational domain, particularly based on the analysis of digital traces (DT) of students, offer substantial opportunities for analyzing student activities. Notably, the DT of students are generated both during remote learning sessions and during blended learning modes. By applying IDA methods to DT, one can obtain information that is beneficial for both the educator in a specific discipline and for the educational institution's management. Such information might pertain to various aspects of the functioning of the digital educational environment (DEE) of the institution, such as: the student's learning style; individual preferences; the amount of time dedicated to a specific task, among others. An algorithm has been proposed for constructing a process model in the DEE based on log analysis within the DEE. This algorithm facilitates the description of a specific process in the DEE as a hierarchy of foundational process elements. Additionally, a model based on cluster analysis methods has been proposed, which may prove beneficial for analyzing the registration logs of systemic processes within the university's DEE. Such an analysis can potentially aid in detecting anomalous behavior of students and other individuals within the university's DEE. The algorithms proposed in this study enable research during log file analysis aimed at identifying breaches of information security within the university's DEE.

11

Makiety modułowe - jako element procesu projektowego, wsparcie marketingu i edukacji określonych grup odbiorców z niepełnosprawnościami

Pocisk-Dobrowolski Jerzy

Builder

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2024

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R.28, nr 3

16--19

PL

Pomimo gwałtownego rozwoju graficznych technik i programów komputerowych w ostatnich latach wykonywanie makiet w tradycyjnej formie nadal jest często stosowane do przenoszenia informacji wizualno-przestrzennych o proponowanych rozwiązaniach projektowych, jak również do celów marketingowych oraz edukacyjnych. Wzmożone zainteresowanie osobami o stwierdzonej niepełnosprawności, w tym z dysfunkcją narządu wzroku, wpłynęło na coraz częstsze użytkowanie makiet jako pomoc w poznawaniu określonej przestrzeni i znajdujących się w niej obiektów przez osoby niedowidzące. Wymaga to jednak zindywidualizowanego podejścia do wykonania takiej makiety, zarówno pod względem technologicznym, jak i kompozycyjnym. Wymagania techniczno-eksploatacyjne są również w takim przypadku znacząco bardziej złożone ze względu na poszerzony sposób użytkowania tego typu miniatur. Makiety modułowe zajmują w tych i pokrewnych działaniach istotne miejsce poprzez związaną z nimi cechę ukazywania w miniaturze wielu rozwiązań alternatywnych. Ich właściwości związane z serwisowaniem w warunkach specyficznego użytkowania wymagają zastosowania zazwyczaj niekonwencjonalnych rozwiązań kompozycyjnych i dotyczących technologii ich wykonania. Stanowią również znaczący element w poszerzaniu całego spektrum zróżnicowanych sposobów przekazywania informacji na temat przestrzeni istniejącej lub projektowanej w kontaktach z osobami dotkniętymi dysfunkcją narządu wzroku.

EN

Despite the rapid development of graphic computer techniques and programs in recent years, mock-ups in traditional form are still often used to convey visual-spatial information about proposed design solutions as well as for marketing and educational purposes. The increased interest of visually impaired people, including those with visual impairments, has resulted in the increasing use of mock-ups as an aid for visually impaired people to learn about a particular space and the objects within it. However, this requires an individualised approach to the making of such a mock-up both in terms of technology and composition. The technical and operational requirements are also significantly more omplex in this case due to the extended use of such miniatures. Modular mock-ups have an important place in these and related activities through their associated feature of presenting a range of alternatives in miniature. Their servicing qualities under conditions of specific use usually require the use of unconventional compositional and technology-related solutions for their manufacture. They are also a significant element in extending the entire spectrum of differentiated ways of communicating existing or designed space to visually impaired people.

12

Proposal of the risk assessment model of vehicle construction systems' safety under the conditions of Industry 4.0

Hlatká Martina, Stopka Ondrej, Kolařík Petr

Archiwum Motoryzacji

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2024

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Vol. 103, nr 1

77--94

EN

With the introduction of the concept of the industry 4.0, automation, robotics, artificial intelligence, communication methods, automotive engineering, mechanics, construction and operation of automotive vehicles, and so on, as well as the methods of corporate management are changing. Following this concept, new risks emerge, when workers have to cooperate with collaborative robots, autonomous systems, artificial intelligence, machine learning and learn new methods different from previous processes and systems. The paper first presents the theoretical background related to the topic addressed. The next sections encompass the literature review, including a list of references relevant to achieving the main objective of the paper, as well as a description of the research methods used in the paper. With regard to the main objective, quantitative research concerning the vehicle construction systems' safety issues in industry 4.0 was conducted; i.e., a questionnaire survey was developed within a sufficiently representative sample of respondents. After conducting the survey, the risk assessment model of vehicle construction systems' safety under the conditions of Industry 4.0 was proposed while applying the principles of system dynamics. An integral part of the paper is represented by the discussion of the obtained results and benefits, as well as the formulation of relevant conclusions.

13

Implementing AI Collaborative Robots in Manufacturing – Modeling Enterprise Challenges in Industry 5.0 with Fuzzy Logic

Cioch Michał, Kulisz Monika, Kański Łukasz

Advances in Science and Technology. Research Journal

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2024

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Vol. 18, no. 7

229--238

EN

The purpose of this article is to propose a fuzzy logic system as a tool for automated risk identification of potential technical challenges and social barriers during the implementation of artificial intelligence-based co-bots on workstations in manufacturing enterprises. On the basis of an extensive literature review, as well as industry reports and expert consultations, the basic challenges and enterprise barriers occurring during the implementation of changes in enterprises, especially during the implementation of the latest technologies, were selected. A fuzzy logic model was then developed that, based on the values of the input factors, generates an answer as to whether there is a risk of technical or social challenges in an enterprise when implementing the latest technologies. The results generated by the developed model, when confronted with expert knowledge, experience and subjective assessments, showed that the model works as expected. The results of the study suggest that the use of fuzzy logic can effectively support companies in detecting challenges and obstacles, thereby facilitating decision-making in reducing the risk of their occurrence. Adaptation to the conditions currently prevailing in the company allows for dynamic adjustment of co-bot deployment strategies, which in turn can lead to more effective management of technological changes and minimization of potential operational disruptions.

14

Barriers and determinants of restructuring employment in the mining industry under the just transformation mechanism. Survey results

Hetmańczyk Piotr

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2023

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z. 170

99--117

EN

Purpose: The purpose of using the method is to obtain information on the social perception of the employment restructuring process in the mining industry, taking into account the phase of design, implementation, monitoring and impact assessment for the industry and local communities. Design/methodology/approach: The theses presented in the article have been verified using: literature review, critical literature analysis, document research and comparative analysis. The article presents a research method enabling social assessment of barriers and determinants of the employment restructuring process in the mining industry under the just transition mechanism. The method of researching the social perception of the hard coal mining employment restructuring process, due to the specificity and complexity of the issue under consideration, uses various, mutually complementary methods and techniques of social research: quantitative and qualitative. Findings: As a result of the analyzes and surveys carried out, a set of conclusions can be presented, the most important of which include conclusions relating to social issues – implementation of the economic transformation in mining communes and poviats is possible in the coming years, but the communes are not prepared for the transformation. The negative effects of the employment restructuring process on the local economy may be noticeable in significant liquidation of enterprises cooperating with entities restructuring industry, reduction of revenues to the budget of local government authorities and reduction of demand on the local market. Originality/value: The article enriches knowledge and develops a discussion in the area of social perception of the employment restructuring process in the mining industry. The attempt to capture the phenomena and processes presented here that may result from the transformation of hard coal mining in Poland is aimed at a better comprehension of the task that may be played by the local government in the area of which operating or closed mines and mining companies are located. On the basis of the results of the survey, it is mainly noticed that there is a need to define the challenges and tasks that should be undertaken in real action by the institutions responsible for the transformation of mining communes – especially due to the need to limit the social and economic consequences that may appear in the transformation process, both in the area of mining communes mining and in their surroundings.

15

Barriers and determinants of restructuring employment in the mining industry under the just transformation mechanism. Interviews results

Hetmańczyk Piotr

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2023

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z. 169

333--350

EN

Purpose: The purpose of using the method is to obtain information on the social perception of the employment restructuring process in the mining industry, taking into account the phase of design, implementation, monitoring and impact assessment for the industry and local communities. Design/methodology/approach: The theses presented in the article have been verified using: literature review, critical literature analysis, document research and comparative analysis. The article presents a research method enabling social assessment of barriers and determinants of the employment restructuring process in the mining industry under the just transition mechanism. The method of researching the social perception of the hard coal mining employment restructuring process, due to the specificity and complexity of the issue under consideration, uses various, mutually complementary methods and techniques of social research: quantitative and qualitative. Findings: As a result of the interviews carried out, it seems that all the expert assessments and opinions expressed confirm thesis that if the changes related to the just transition process cannot be stopped, then one must learn to take advantage of it. The view expressed above regarding the process of just transformation, which implies both economic and social challenges that are important for mining communes, among which the following deserve special attention as increasing the importance of the participation of mining communes in making government decisions, more friendly conditions shaping cooperation, need for mining communes to implement projects based on local mobility, adaptability and social sensitivity, need to increase social awareness related to mining in mining communes with responsibility for the just transition process, disappearance of state policies in the implementation of social functions in the phase of ongoing changes and taking them over by the local society. Originality/value: The article enriches knowledge and develops a discussion in the area of social perception of the employment restructuring process in the mining industry. Based on the assessments and opinions of experts, it seems that in the perspective of the predictable occurrence of the transformation process, it could be important for local governments, and in particular mining communes, to promote actions for an evolutionary, not short-term shift from coal-based energy to low-emission sources - striving to make it a multi-stage and long-term process. Equally important may be the pursuit of solutions according to which the principle of introducing funds directly to individual communes for the implementation of the just transformation process will be adopted. Must be considerated need for local governments, including mining communes, to obtain state intervention appropriate to the scale of the challenges, while equipping them with reliable and comprehensively planned proposals for transformational activities limiting their spontaneity.

16

Model of the random phase of signal E6 of the Galileo Satellite Navigation System

Džunda M., Čikovský S., Melniková L.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2023

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Vol. 17 No. 1

61--68

EN

The aim of this paper was to describe the random phase of the E6 signal, the Galileo satellite navigation system. Based on the available information, mathematical models of the measurement signals of the Galileo system were created. The frequencies of individual signals were determined and their structure visualized. A block diagram of the generation of individual signals is also shown. The main contribution of the paper is the creation of a random phase model of the E6 signal from the Galileo system. In accordance with the technical data of the Galileo system, the parameters of the random phase model were determined. The simulation results confirmed that the frequency instability of the continuous signal E6 n received from the satellite is a stationary process. The short-term stability of the frequency ranges from 10-13 to 10-14. The simulation results confirmed that the Doppler effect significantly affects the random phase of the E6 signal. This phenomenon can affect the results of navigation measurements using the E6 signal. The modeling and simulation results of the random phase of the E6 signal presented in the paper can be used to evaluate the immunity of the Galileo navigation system to interference.

17

Critical analysis of pool boiling correlations

Radek Norbert, Orman Łukasz J., Honus Stanislav, Pietraszek Jacek

System Safety : Human - Technical Facility - Environment

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2023

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Vol. 5, iss. 1

258--265

EN

The manuscript describes the problem of boiling heat flux determination with the focus on nucleate boiling mode. It presents the boiling phenomenon on the bare surface and provides a review of the correlations that can be used for modelling purposes. Two most commonly applied correlations were validated against the experimental results. One of them showed significant discrepancies, which might be attributed to the conditions of the research and possible variations in the morphology of the heater. The other correlation proved to be successful in determining heat flux.

18

Model identyfikacyjny systemu transportowego w ujęciu ogólnej teorii systemów

Ficoń Krzysztof, Zięcina Marcin

Rocznik Bezpieczeństwa Morskiego

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2023

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R. XVII

5--31

PL

W pracy zaprezentowano autorski model systemu transportowego bazujący na ogólnej teorii systemów L. von Bertalanffy’ego, obejmujący zbiór elementów składowych (systemów, podsystemów) oraz wielowymiarowy zbiór relacji systemowych. We wstępie przytoczono podstawowe pojęcia i wybrane definicje tytułowego systemu transportowego. Część zasadnicza obejmuje typologiczną charakterystykę zbioru elementów składowych tworzących modelowany system transportowy oraz wielowymiarową specyfikację podstawowych relacji systemowych. Analizę identyfikacyjną systemu transportowego prowadzono na bazie popularnego podziału gałęziowego (środowiskowego) transportu, który był punktem odniesienia zarówno dla typologii elementów składowych, jak też dla wyróżnionych relacji systemowych. Na wstępie można postawić tezę, że przeprowadzony etap modelowania identyfikacyjnego (informacyjnego) jest pierwszym krokiem w procesie modelowania systemów prakseologicznych i pozwala na podjęcie bardziej zaawansowanych prac nad badaniem dowolnie złożonych systemów realnych, a także abstrakcyjnych. Modelowanie identyfikacyjne jest więc warunkiem koniecznym bardziej szczegółowej analizy każdego systemu prakseologicznego.

EN

The paper presents an original model of the transport system based on L. von Bertalanffy's general theory of systems, including a set of components (systems, subsystems), and a multidimensional set of system relations. In the introduction, the basic concepts and selected definitions of the title transport system are quoted. The main part includes the typological characteristics of the set of components forming the modeled transport system and the multidimensional specification of the basic system relations. The identification analysis of the transport system was carried out on the basis of the popular branch (environmental) division of transport, which was a point of reference both for the typology of the components, as well as for the distinguished system relations. At the outset, it can be argued that the stage of identification (information) modeling is the first step in the process of modeling praxeological systems and allows for more advanced work on the study of any complex real and abstract systems. Identification modeling is therefore a prerequisite for a more detailed analysis of any praxeological system.

19

Problems of simulation of the pantograph - catenary contact line interaction in terms of interoperability

Szkopiński Janusz, Śmieszek Maciej

Prace Naukowe Politechniki Warszawskiej. Transport

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2023

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z. 137

5--18

EN

The paper presents the application of the pantograph-overhead contact line interaction simulation, which is carried out to assess the fulfillment of the essential interoperability requirements for the interoperability component, which is the overhead contact line. According to the paper's authors, carrying out model validation according to the EN 50318:2002 standard indicated in the technical specification for interoperability does not exhaust the question of the correctness of the method used. This fact is also confirmed in the literature discussed in the paper. To substantiate the above thesis, a numerical simulation was carried out in MATLAB/Simulink using a two-mass model of the pantograph and overhead contact line. As a result of the sensitivity analysis of the influence of the input data on the simulation results, conclusions were formulated to confirm the thesis in question.

PL

W pracy przedstawiona została problematyka zastosowania symulacji współpracy pantografu z siecią trakcyjną, która realizowana jest w celu oceny spełnienia wymagań zasadniczych interoperacyjności dla składnika interoperacyjności, jakim jest sieć trakcyjna. Zdaniem autorów pracy, przeprowadzenie walidacji modelu według wskazanej w technicznej specyfikacji interoperacyjności normy EN 50318:2002, nie wyczerpuje kwestii prawidłowości zastosowanej metody. Fakt ten jest również potwierdzony w literaturze, która została omówiona w pracy. Dla potrzeb uzasadnienia powyższej tezy, przeprowadzona została w programie MATLAB/Simulink symulacja numeryczna z wykorzystaniem dwu-masowego modelu pantografu i sieci trakcyjnej. W wyniku analizy wrażliwości wpływu danych wejściowych na wyniki symulacji zostały sformułowane wnioski potwierdzające przedmiotową tezę.

20

Efficiency of use of fuel and energy resources of Ukraine: assessment, simulation and forecasting

Andrusiv Uliana, Popadynets Nazariy, Zelinska Halyna, Krasnorutskyy Oleksiy, Yakubiv Valentyna, Maksymiv Yuliia, Hryhoruk Iryna, Shchur Roman, Lapchuk Yaroslav

Polityka Energetyczna

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2023

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T. 26, z. 4

63--80

EN

This work focuses on the fact that the realities of today’s Ukrainian economy require not only recovery but also an increase in the volume of production of products produced by energy-intensive enterprises in the industry to the pre-crisis level, which stimulated the following: an increase in the demand for fuel and energy resources (FER); the increase in the cost of imported natural gas and oil, which became an excessive burden for domestic economic entities and the state budget and led to increased dependence on the geopolitical influence of the Russian Federation; the weakening of Ukraine’s position on the global energy market as a transporter of energy resources; increased competition in the global, national and regional markets of FER under the influence of the growth of general demand, etc. It was confirmed through analysis that the priority of the state policy in the field of the energy security of Ukraine will continue to be the stimulation of the implementation of energy-saving measures and the improvement of the efficiency of the use of FER by attracting all possible incentives at all levels of management. A visualized model is proposed which will make it possible to systematically manage the processes of the effective use of FES; an action algorithm has been developed that will allow solving problems that arise in changing external and internal environments, simplifying the decision-making procedure regarding the effectiveness of the use of FER, and reducing their specific costs. The assessment and forecasting of the energy efficiency of Ukraine’s economy was conducted using additive and multiplicative convolutions, which made it possible to forecast the energy efficiency index until 2035 in accordance with the adopted energy strategy of the state. It was determined that the strategic directions of increasing energy efficiency and realizing the energy potential of Ukraine remain the technological and structural restructuring of the economy, social infrastructure, and the creation of the economic, managerial and legal mechanisms necessary for the implementation of the state energy efficiency policy.

PL

Niniejsza praca koncentruje się na założeniu, że realia dzisiejszej ukraińskiej gospodarki wymagają nie tylko ożywienia, ale także zwiększenia wielkości produkcji wyrobów wytwarzanych przez przedsiębiorstwa energochłonne w przemyśle do poziomu sprzed kryzysu, który stymulowały następujące czynniki: wzrost popytu na paliwa i surowce energetyczne (FER); wzrost kosztów importowanego gazu ziemnego i ropy naftowej, który stał się nadmiernym obciążeniem dla krajowych podmiotów gospodarczych i budżetu państwa oraz doprowadził do zwiększenia zależności od geopolitycznych wpływów Federacji Rosyjskiej; osłabienie pozycji Ukrainy na światowym rynku energetycznym jako przewoźnika surowców energetycznych; wzrost konkurencji na światowych, krajowych i regionalnych rynkach FER pod wpływem wzrostu ogólnego popytu itp. W wyniku analizy potwierdzono, że priorytetem polityki państwa w dziedzinie bezpieczeństwa energetycznego Ukrainy będzie nadal stymulowanie wdrażania środków oszczędzania energii i poprawa efektywności wykorzystania FER poprzez przyciąganie wszelkich możliwych zachęt na wszystkich poziomach zarządzania. Zaproponowano wizualizację modelu, który umożliwi systematyczne zarządzanie procesami efektywnego wykorzystania FES; opracowano algorytm działania, który pozwoli na rozwiązywanie problemów pojawiających się w zmieniających się środowiskach zewnętrznych i wewnętrznych, upraszczając procedurę podejmowania decyzji dotyczących efektywności wykorzystania FER i zmniejszając ich specyficzne koszty. Ocenę i prognozowanie efektywności energetycznej gospodarki Ukrainy przeprowadzono przy użyciu splotów addytywnych i multiplikatywnych, co umożliwiło prognozowanie wskaźnika efektywności energetycznej do 2035 roku zgodnie z przyjętą strategią energetyczną państwa. Ustalono, że strategicznymi kierunkami zwiększania efektywności energetycznej i realizacji potencjału energetycznego Ukrainy pozostają technologiczna i strukturalna restrukturyzacja gospodarki, infrastruktury społecznej oraz stworzenie mechanizmów ekonomicznych, zarządczych i prawnych niezbędnych do realizacji państwowej polityki efektywności energetycznej.