bluuebunny/crossref_metadata_2025 huggingface dataset:
On the super edge-magicness of graphs with a specific degree sequence
Authors:   Department of Sport and Physical Education, Faculty of Physical Education, Kokushikan University, 7-3-1 Nagayama, Tama-shi, Tokyo 206-8515, Japan., Ichishima Rikio , Batle Francesc-Antoni Muntaner- ,   Graph Theory and Applications Research Group, School of Electrical Engineering and Computer Science, Faculty of Engineering and Built Environment, The University of Newcastle, NSW 2308 Australia.
Published: January 2025

A graph \(G\) is said to be super edge-magic if there exists a bijective function \(f:V\left(G\right) \cup E\left(G\right)\rightarrow \left\{1, 2, \ldots , \left\vert V\left( G\right) \right\vert +\left\vert E\left( G\right) \right\vert \right\}\) such that \(f\left(V \left(G\right)\right) =\left\{1, 2, \ldots , \left\vert V\left( G\right) \right\vert \right\}\) and \(f\left(u\right) + f\left(v\right) + f\left(uv\right)\) is a constant for each \(uv\in E\left( G\right)\). In this paper, we study the super edge-magicness of graphs of order \(n\) with degree sequence \(s:4, 2, 2, \ldots, 2\). We also investigate the super edge-magic properties of certain families of graphs. This leads us to propose some open problems.
Connectivity indices and QSPR analysis of benzenoid hydrocarbons
Authors:   School of Mathematics and Statistics, Qinghai Normal University, Xining, 810008, Qinghai, China, Lin Zhen
Published: January 2025

In mathematical chemistry, a large number of topological indices are used to predict the physicochemical properties of compounds, especially in the study of quantitative structure-proerty relationship (QSPR).
However, many topological indices have almost the same predictive ability. In this paper, we focus on how to use fewer topological indices to predict the physicochemical properties of compounds through the QSPR analysis of connectivity indices of benzene hydrocarbons.
Universal updates of Dyck-nest signatures
Authors:   Department of Mathematics, University of Puerto Rico, San Juan, Puerto Rico., Dejter Italo
Published: January 2025

The anchored Dyck words of length \(n=2k+1\) (obtained by prefixing a 0-bit to each Dyck word of length \(2k\) and used to reinterpret the Hamilton cycles in the odd graph \(O_k\) and the middle-levels graph \(M_k\) found by M\"utze et al.) represent in \(O_k\) (resp., \(M_k\)) the cycles of an \(n\)- (resp., \(2n\)-) 2-factor and its cyclic (resp., dihedral) vertex classes, and are equivalent to Dyck-nest signatures. A sequence is obtained by updating these signatures according to the depth-first order of a tree of restricted growth strings (RGS's), reducing the RGS-generation of Dyck words by collapsing to a single update the time-consuming \(i\)-nested castling used to reach each non-root Dyck word or Dyck nest. This update is universal, for it does not depend on \(k\).
A study on the food security, hunger and poverty: A social menace of the nation
Authors: Jhikmik Kar
Published: January 2025

The concept of Food Security is multifaceted and varied. Food is as essential for living as air is for breathing. But food security means something more than getting two square meals. It lies on the three basic concept- availability, accessibility and affordability i,e how much food is produced within a nation; whether the food is equally distributed in all the section of the population irrespective of caste creed; and the dietary food can be purchased by all. The present paper is an attempt to highlight the problems created by food security in different parts of the nation and suggest mitigation measures to combat the problem.
Eichmann in Jerusalem reread
Authors: Kießling Ulrich
Published: January 2025

Hannah Arendts Großessay »Eichmann in Jerusalem« fasste die Ergebnisse des Prozesses gegen den Organisator der NS-Judenvernichtung, Adolf Eichmann, mit der Formel über die Banalität des Bösen zusammen. Arendt will mit dieser Formel ausdrücken, dass Eichmann ein normaler Bürokrat gewesen sei, bei dem keine Anzeichen diabolischer Charakterzüge erkennbar gewesen seien, sondern eher bescheidene Tugenden wie Fleiß, Organisationstalent und Gehorsamsbereitschaft. Dass sein Eifer ihn zum Verbrecher werden ließ, leugnete er, weil er sich im Einklang mit Hitler wähnte. Die Beträge der Zeitgenossen Harry Mulisch, Heinar Kipphardt sowie eine aktuelle Auseinandersetzung mit Arendts Text durch Christian Spengler werden hinterfragt.
Die Widerständigen und die Vermittelnden
Authors: Schließler Clara , Hellweg Nele , Decker Oliver
Published: January 2025

Im folgenden Beitrag werden ausgewählte Ergebnisse eines Forschungsprojekt zu Antisemitismus und jüdischen Perspektiven in Hamburg vorgestellt. Das Datenmaterial besteht aus 2020 durchgeführten Gruppendiskussionen mit jüdischen Hamburgerinnen und Hamburgern verschiedener Generationen, welche tiefenhermeneutisch ausgewertet und zu idealtypischen Praxisentwürfen jüdischen Umgangs mit (Alltags-)Erfahrungen im postnationalsozialistischen Deutschland verdichtet wurden. Zwei der Praxisentwürfe unterscheiden sich in auffälliger Weise zwischen unterschiedlichen Alterskohorten. Der von uns formulierte Typus Die Widerständigen ist ein Praxisentwurf, der hauptsächlich aus Datenmaterial von Jüdinnen und Juden der zweiten Generation post-Shoa herausgearbeitet werden konnte. Der zweite Praxistypus der Reaktion auf Antisemitismuserfahrung sind Die Vermittelnden. Sie sind bei der dritten bzw. vierten Generation zu finden. Beide Praxisentwürfe werden hier anhand verschiedener charakteristischer Motive kontrastiert und in einen reflexiven Zusammenhang zu den unterschiedlichen historischen und gesellschaftspolitischen Sozialisationshintergründen der jeweiligen Generation gebracht. Anschließend werden kurz mögliche Auswirkungen der Terrorangriffe vom 7. Oktober 2023 auf die vorher erhobenen Praxisentwürfe reflektiert.
Eingestürztes Weltvertrauen nach dem 7. Oktober
Authors: Arnold Simon
Published: January 2025

Der Beitrag gibt einen Einblick in psychoanalytische Antisemitismusforschung mit dem besonderen Augenmerk auf transgenerationale Tradierungsprozesse extremen Traumas in Familien von Überlebenden der Shoah. Vor diesem Hintergrund wird die Ruptur in einer Encountergruppe mit Angehörigen der Dritten Generation nach dem 7. Oktober untersucht und Überlegungen zu den psychosozialen Folgen von Erfahrungen mit Antisemitismus heute und einer damit in Zusammenhang stehenden Reaktualisierung eines extremtraumatischen Vertrauensverlustes abgeleitet. Dabei werden psychoanalytische Modelle zur Genese eines basalen Grundvertrauens und die darauf Bezug nehmenden frühen Überlegungen zum Vertrauensverlust bei Überlebenden der Shoah sowie Jean Amérys Ausführungen zum eingestürzten Weltvertrauen herangezogen.
Scientific Support for the Development of Ukraine’s Agricultural Sector in Wartime
Authors: Gadzalo Ia.
Published: January 2025

This booklet summarizes and highlights the ongoing activities of the National Academy of Agrarian Sciences of Ukraine during 2023, amidst largescale military aggression by the russian federation.
It exemplifies the prospects for advancing scientific research aimed at fostering the development of Ukraine’s agricultural sector.
Justification of a clinical trial with an updated systematic review: calling ICMJE to introduce new publication requirements
Authors: Boesen Kim , Gluud Christian
Published: January 2025

Calling ICMJE to introduce new publication requirements
Plant Growth-Promoting Rhizobacteria Involved in Developing Drought Tolerance in Plants: A Bibliometric Review
Authors: Wanninayaka Kasun , Weerakoon Minindu , Abesinghe Akila , Mendis Thilina , Sivashankar Pathmanathan
Published: January 2025

Drought stress poses a significant threat to agricultural productivity, particularly in arid and semi-arid regions, necessitating innovative strategies for enhancing plant resilience. Plant Growth-Promoting Rhizobacteria (PGPR) have emerged as promising agents for mitigating drought effects and enhancing crop drought tolerance, providing an environmentally friendly approach to alleviate drought stress and improve resilience to dry conditions. In this study, utilizing the Web of Science Core Collection database, we conducted a comprehensive bibliometric analysis to elucidate the scientific landscape surrounding PGPR-mediated drought tolerance. The analysis employs bibliometric co-citation network techniques, examining data from over 1344 peer-reviewed studies from 2000 to 2024. Findings indicate the existence of seven distinct disciplinary research clusters within PGPR and drought research. Key thematic areas identified include growth-promoting bacteria, ACC deaminase, drought, tolerance, drought stress, rhizosphere, and ethylene These findings underscore the diverse approach employed to address drought stress through PGPR-mediated mechanisms. This bibliometric study not only elucidates the evolution of PGPR research but also offers valuable insights into future research directions, thereby serving as a roadmap for mapping the frontiers of investigation in the domain of plant drought tolerance enhancement.
EEG µ and ß rhythms scaled from action observation to real-world social interaction: Evidence from a four-tier scalable design study
Authors: Parada Francisco J. , Grasso-Cladera Aitana , Rossi Alejandra
Published: January 2025

Traditional human neuroscience solely relies on controlled laboratory paradigms, which, while useful, fail to capture the situatedness, sociality, complexity, and richness of real-world interactions. Hence, understanding how the human brain processes social interactions across varying contexts is essential for advancing human neuroscience. The present study investigated the dynamics of µ (8–13 Hz) and β (13–30 Hz) EEG rhythms, neural markers of sensorimotor and cognitive engagement, across a four-tier scalable experimental design. Participants engaged in tasks ranging from simple hand-gesture observation (Experiment 1) to real-world Rock-Paper-Scissors (RPS) gameplay under naturalistic hyperscanning conditions (Experiment 4). Experiments 2 and 3 were physically the same as Experiment 1, but participants played against a simulated artificial intelligence (AI) and a simulated human.As expected, gameplay against simulated opponents elicited robust µ and β event-related desynchronization (ERD), reflecting heightened sensorimotor resonance and cognitive control. In contrast, real-world RPS gameplay between human dyads revealed attenuated µ and β ERD, coupled with enhanced γ synchronization. We interpret these findings as a redistribution of neural resources in naturalistic settings, emphasizing distributed and adaptive processing over localized responses. The present work provides novel insights into the brain's adaptive mechanisms during real-world social interactions and highlights the importance of contextual complexity in shaping neural dynamics.
Emotional inner speech influences heart rate and blood pressure – a case study
Authors: Wallentin Mikkel , Kruse Line , Nedergaard Johanne
Published: January 2025

In this case study, we investigated the effects of emotional inner speech on heart rate and blood pressure. Across nine experiments, the case participant, a middle-aged man, engaged in strong self-generated negative or positive inner speech while undergoing blood pressure and heart rate measurements. Across experiments, emotional inner speech was compared to different types of control conditions, including slow counting, fast counting (to control for speech rate), backwards counting in steps of 7 (to control for cognitive load), breathhold (to control for differences in respiration), and abdominal muscle tension (to control for effects of physical tension during emotional inner speech). Across experiments, a clear increase in heart rate was found across all experiments for emotional inner speech, both positive and negative. Increases in both systolic and diastolic blood pressure were also found across most experimental conditions, but with slightly less consistency. No differences were found between positive and negative inner speech. Speech rate, cognitive load, and muscle tension were all found to have independent effects, but in total, the experiments point to emotional inner speech having an added effect on cardiovascular physiology beyond what can be explained by confounding effects. The case study thus informs future group studies about the relationship between inner speech and physiology.
Evaluation of tumor stroma ratio in stage I to IV colorectal carcinoma at a tertiary care hospital in the Morang district, Nepal
Authors: Karki Diksha , Yadav Pooja , Parajuli Surya Bahadur
Published: January 2025

Background: The tumor stroma ratio has previously been shown to be a strong prognostic factor in colorectal carcinoma. It correlates with high-risk parameters like tumor stage, lymph node metastasis, and lymphovascular invasion. The present study aimed to analyze the tumor stroma ratio (TSR) in Stage I to Stage IV colorectal cancer and correlate it with tumor stage, lymphovascular invasion, and lymph node metastasis.Material and methods: A total of 50 patients whose resection specimens had been received in the Department of Pathology, Birat Medical College Teaching Hospital, Nepal, during the study period. 8 cases who had neo-adjuvant chemotherapy were excluded. The invasive front of the tumor was evaluated using a 10x objective for the stroma percentage and was categorized into the high stroma (>50%) and low stroma (≤50%) TSR.
Results: Of 42 cases, 19 (45.2%) tumors have a low tumor stroma ratio, and 23(54.8%) show a high tumor stroma ratio. The low TSR is strongly associated with the high pathological stage of the tumor (p <0.001) and the high lymph node stage (p <0.001). Low TSR tumors were more common on the left side (p <0.001). Lymphovascular invasion is associated with high stroma compared to low stroma (p <0.001). The increasing tumor stage from I to IV strongly correlated with the TSR (p <0.001).
Conclusion: The current study confirms the significant association between TSR and the corresponding tumor stage, metastasis in the lymph node, and lymphatic and vascular invasion.
Nauczyć Polski i polskiego. Rzecz o dorobku i przyszłości Szkoły Języka i Kultury Polskiej Uniwersytetu Śląskiego na jej 35-lecie
Authors: Tambor Jolanta , Cudak Romuald
Published: January 2025

The book is a collection of glottodidactic experiences of the School of Polish Language and Culture at the University of Silesia. The respective texts of the volume, preceded by an introductory article describing the history of the School and its development, concern the most important areas of the institution's activity and the interests of its staff and close associates. The publication is not only a record of the activity of a specific institution, one of the many that contributed to the creation of Polish-language glottodidactics in the 1990s, but also a reflection of the trends and transformations of this relatively young discipline, which experienced its heyday in the years of the School's establishment and solidification. The chapters of the book are arranged in such a way as to show these trends and transformations.
Mit „neutralnych zasad interpretacji prawa”. Oryginalistyczna wykładnia Konstytucji worzecznictwie Sądu Najwyższego Stanów Zjednoczonych
Authors: Skrzydło Jacek
Published: January 2025

Originalism is a way of interpreting the text of the Constitution of the United States of America based on the assumption that its meaning was definitively established upon ratification. The basis of the modern critique of originalism is the assumption that the Constitution itself does not dictate any particular method of interpretation, as the original intent or original public understanding of the constitutional clauses cannot be established with certainty. Acceptance of the originalist method would lead to questioning several foundations of the American constitutional order. Indeed, it is difficult to give the views of a narrow 18th-century elite of the society of the time the power to settle contemporary disputes.
Od Fukuyamy z powrotem do Kojève’a. Problematyczność liberalnego zwieńczenia historii
Authors: Winczewski Damian
Published: January 2025

The article’s subject is a critique of the historiosophic foundations of liberal democracy from the perspective of Alexandre Kojève. This critique is presented in contrast to the main theses of Francis Fukuyama. The author emphasises Fukuyama’ s philosophical influences’ selective and syncretic nature, leading to a disinterpretation of Kojève’s pivotal ideas. As a result, author concludes that Kojève anticipates Fukuyama’s current dilemmas regarding his contemporary crisis, emphasising the importance of political identity, the threat from particularisms, and the ideological void resulting from the depoliticisation and economisation of society.
PENERAPAN METODE BERMAIN UNTUK MENINGKATKAN MOTIVASI BELAJAR GERAK DASAR LOMPAT JAUH PADA PESERTA DIDIK KELAS V SD NEGERI DUKUHAN KERTEN SURAKARTA TAHUN PELAJARAN 2023/2024
Authors: Mukholid Agus , Witarto Witarto , Dinata Tomy Priya , Rofiq Mohammad Latif Nor , Atletika Lalang , Murti Wisnu , Prakosa Bima Aji
Published: January 2025

Penelitian ini bertujuan untuk mengetahui peningkatan motivasi belajar lompat jauh dengan penerapan metode bermain pada siswa kelas 5 SD Negeri Dukuhan Kerten Surakarta tahun pelajaran 2023/2024. Menggunakan Penelitian Tindakan Kelas (PTK) yang terdiri dari tes dan observasi, hasil penelitian menunjukkan peningkatan motivasi belajar dari 59,33% sebelum siklus 1, menjadi 62,21% pada akhir siklus 1, 69,52% pada akhir siklus 2, 74% pada akhir siklus 3, dan 79,19% pada akhir siklus 4. Kesimpulannya, penerapan metode bermain dapat meningkatkan motivasi belajar gerak dasar lompat jauh pada siswa kelas V SD Negeri Dukuhan Kerten Surakarta.
Proposta de estudo para a implantação do aplicativo Colab
no município de Assis Chateaubriand – PR
Authors: Colen Caroline da Silva , Galli Michelli Cristina , Lorensetti Everaldo Lorensetti
Published: January 2025

A tecnologia digital está cada vez mais inserida nas sociedades, e, por meio dela, é possível a troca de informações de maneira mais rápida, o que facilita, principalmente, a resolução de problemas encontrados no cotidiano das pessoas. Considerando os avanços tecnológicos e a potencialidade dos aplicativos digitais na melhoria da vida social, o presente projeto dedicou-se ao estudo exploratório teórico/prático do Colab, uma rede de comunicação entre população e gestão municipal que visa identificar os problemas infraestruturais encontrados nos bairros dos municípios. A plataforma permite a participação da população no processo de cidadania, possibilitando sugestões de melhorias na infraestrutura dos bairros, uma vez que proporciona o compartilhamento de fotos dos problemas encontrados e o acréscimo de legendas, comentários, localização etc. Nesse sentido, o objetivo deste trabalho foi apresentar o estudo realizado do Colab aos representantes do município de Assis Chateaubriand-PR, para que pudessem analisar a proposta de implantação.
СУТНІСТЬ ТА ЗНАЧЕННЯ АНТИКРИЗОВОГО УПРАВЛІННЯ В КОНТЕКСТІ РЕАЛІЗАЦІЇ ІНСТИТУТУ БАНКРУТСТВА
Authors: РУДА Тетяна , РУДИЙ Андрій
Published: January 2025

У статті наведено теоретичні основи антикризового управління підприємства за сучасних умов господарювання. Розкрито сутність, структурне наповнення системи антикризового управління. Окреслено особливості системи управління підприємством в умовах кризи. Окрему увагу приділено сучасному змістовному та функціональному наповненню антикризового управління, елементи якого застосовуються в контексті реалізації процедур банкрутства. Визначено структурну специфіку антикризового управління, зокрема, визначено об’єкт, суб’єкт та мету такого управління. Проаналізовано його особливості та принципи реалізації. Актуалізовано функції антикризового управління.В ході дослідження запропоновано авторське визначення категорії «антикризове управління», яке запропоновано розуміти як сукупність заходів, спрямованих на мінімізацію негативних наслідків кризи для функціонування підприємства та активізацію його санаційного потенціалу через формування адаптаційної здатності його системи управління до змін у зовнішньому середовищі.
Are maternal adverse childhood experiences (ACEs) and resilience associated with breastfeeding rates and neonatal growth?
Authors: Zheng Lily , Hunter Krystal , Banks Hsiao-Wei , Abraham Leslie , Kushnir Alla
Published: January 2025

Background: Adverse childhood experiences (ACEs) have shown to have a negative impact on health outcomes. There is evidence of how negative childhood events adversely affect self-esteem in adulthood. Not only do ACEs have an impact on one's own life, but maternal ACEs have shown to have consequences on infants’ development as well, indicating a negative intergenerational impact.

Objectives: To analyze the relationship between maternal ACEs on infant outcomes, breastfeeding adherence, and maternal self-perception

Design/Methods: Between 2020 and 2023, 120 mother-infant pairs from a New Jersey urban hospital were approached between their 2nd trimester and the 2-month well visit. Mothers completed the ACE Questionnaire and the 7 C’s Tool survey for maternal resilience. Infant developmental milestones were collected from 2-,4-,6- and 12-month well-visits. Chi-square, Mann Whitney U, and independent t-tests were used to examine ACEs, maternal race and resilience, breastfeeding adherence, and infant developmental milestones.

Results: A total of 51% (N=59) of mothers were categorized as having high ACE scores (2+). Higher scores from the 7 C’s Tool survey reflected lower resilience. There was a significant association between maternal ACE scores and higher 7 C’s Tool survey scores, linking lower maternal resilience with higher maternal ACE exposure (p< 0.001)

There was found to be no significant relationship between ACE scores, race, and breastfeeding, and infant weights and head circumferences. Additionally, there was no significant relationship between resilience scores, race, breastfeeding, and infant weights and head circumferences. Though not statistically significant, black and Hispanic mothers represented a larger percentage of mothers with high ACEs scores while white mothers represented a lower percentage. Black mothers also represented a higher percentage of mothers categorized as high 7 C’s Tool Survey scores, reflecting lower resilience against adversity.

Conclusions: The data shows evidence for a significant impact of ACEs affecting mothers’ self-perception and self-determined resiliency. Future research should focus on determining the relationship between maternal race, ACEs, and their impact on both maternal and infant health outcomes.
Mathematical model of the stress-strain state of multilayered structures with different elastic properties
Authors: Ivanchenko Gryhorii , Getun Galina , Bezklubenko Iryna , Solomin Andrii , Getun Serhii
Published: January 2025

The article examines the features of stress-strain state of structures made of two and multilayer elements. The relevance of use of multi-layer load-bearing structures in rapidly constructed protective structures in Ukraine under conditions of possible shock-explosive and fire damage is justified.The method of interpolating trigonometric Lagrange polynomials in mixed plane problems of theelasticity theory is described. In the problems of elasticity theoryfor the regionunder conditions of planar setting, two of the four boundary conditions are known. It is proposed permissive system of integral equations relative to an unknown pair of boundary conditions on each side of the area under consideration, based on the solution of theorem on reciprocity of work and reciprocity of displacements for a plane under the influence of a unit force.Solutions for each of the sides of region are built by developing the Multopa-Kalandia collocation method. The boundary conditions are the result of solving the system of integral equations. Features on the contour, namely points of application of unit forces, boundary breaks, etc., are taken into account by additional functions that are introduced into the kernels of integral expressions in the form of coefficients of the required boundary conditions.To represent the cumbersome functions of movements and stresses of multilayer structures in a compact form, the apparatus of the theory of functions of a complex variable is used, which leads to compact expressions that are convenient for programming. To obtain more accurate solutions and reduce the duration of computer programs, all ordinary and singular integrals given in the work are calculated analytically, that is, the system of integral equations to be solved is reduced to a system of linear algebraic equations with unknown density functions at the interpolation points.The proposed mathematical model provides the universality inherent in general numerical methods and allows to study the general stress-strain state of multilayer structures and local effects in zones of junction of layers with different elastic properties.
Dynamic analysis of the simultaneous starting of the boom and load lifting mechanisms hoisting for the jib and the cargo of the jib crane with a hydraulic drive
Authors: Loveikin Viacheslav , Romasevych Yurii , Loveikin Andrii , Liashko Anastasiia , Pochka Kostiantyn
Published: January 2025

Combining the work of individual mechanisms is carried out to improve the productivity of jib cranes. In particular, the task of joint starting of hoisting mechanisms of jib and cargo is considered in this article. Dynamic loads on crane structural elements, drives, and cargo on a flexible suspension increase with such movement of mechanisms. Increased loads lead to a decrease in the reliability of the crane and an increase in energy costs. When researching the dynamics of the joint starting of hoisting mechanisms of jib and cargo, the jibs system is represented by a mechanical system with four degrees of freedom, which takes into account the main movement of the mechanisms and the oscillatory movement of links with elastic and dissipative properties, as well as the cargo on a flexible suspension in the plane of departure change. A mathematical model of the joint movement of hoisting mechanisms of the jib and cargo was built for such a dynamic model of the boom system of the crane. The obtained model is a system of nonlinear differential equations of the second order, the solution of which was carried out by a numerical method in the form of a computer program. The dynamic of the joint starting of the hoisting mechanisms of the jib and cargo in the jib crane with specific numerical parameters were calculated and studied based on the developed program. The performed calculation made it possible to conduct a dynamic analysis of the joint starting of the hoisting mechanisms. High-frequency oscillations of links with elastic and dissipative properties in the drive of the hoisting mechanism were found as a result of the analysis. Also, low-frequency vibrations of the load on the flexible suspension were found. In the process of starting the mechanisms, high-frequency oscillations are attenuated during the transition process, and low-frequency oscillations of the load are sufficiently long and are attenuated during a significant period.
It is recommended to optimize the starting and braking modes to improve the dynamic properties of the hoisting mechanisms of the jib and cargo during their joint movement.
Investigation of the influence of geometric and physico-mechanical parameters of bearing layers and polymer filler on the oscillation process of a layered cylindrical shell at non-stationary load
Authors: Gaidaichuk Viktor , Kotenko Kostiantyn , Klymenko Mykola
Published: January 2025

Dynamic transient processes are studied and the results of the assessment of the influence of geometrical, physicaland mechanical parameters of bearing layers and polymer aggregate on the behavior of a three-layer cylindrical shell structure under non-stationary impulse loading are given. The used model of the theory of shells and rods by S.P. Tymoshenko, taking into account independent static and kinematic hypotheses for each layer of the structure. Numerical calculations of normal deflections and normal stresses of the load-bearing layers of the structure, which determine its stress-strain state (STS), have been performed. The finite-element model was created using a three-dimensional volumetric finite element of the Solid type, which, according to quality criteria: narrowing and curvature, internal angles and other indicators, met the requirements for providing a calculation mesh at the finite-element level.Variants of the structure with discrete-symmetric rib-reinforced aggregate of different elasticity are considered. A comparative analysis of the deflections and stresses of the load-bearing layers of the structure with the parameters of the light aggregate is given: Е1;2/Еt=500 and Е1;2/Еt=50.The general trend of all the considered cases of the study of the dynamics of the three-layer cylindrical shell structure was found to be a significant response to the change in the modulus of elasticity of the light aggregate, the value of which significantly affects the nature of its oscillationsThe article shows that the parameters of the geometry of the bearing layers of the structure, the physical and mechanical properties of their material, and the elasticity of the aggregate significantly affect the dynamics of oscillatory processes of cylindrical shell structures under non-stationary loading.
Hyperbolic models in the analysis of heat and moisture exchange in inhomogeneous porous materials
Authors: Chovniuk Yurii , Cherednichenko Petro , Moskvitina Anna , Shyshyna Mariia , Shudra Nataliia , Ivanov Evhen
Published: January 2025

The paper uses hyperbolic models for the analysis of heat and moisture exchange in inhomogeneous porous materials in which short heat pulses propagate. The heat transfer in sharply inhomogeneous media at room temperature is not described by Fourier and Cattaneo laws, but is modeled by Guyer-Krumhansl-type equations. The O.V. Lykov system of equations of interrelated heat and mass transfer taking into account the finiteness of heat and mass (moisture) transfer rates is solved using a one-dimensional formulation. However, the heat propagation velocity is of the order of the sound speed, so due to the short relaxation time, the solutions of the hyperbolic equation of thermal conductivity largely coincide with the solutions of the classical parabolic equation, although there are some significant differences. They depend on processes occurring on the surface (in thin layers) of porous bodies. The moisture diffusion rate in capillary-porous materials is approximately 106…107 and more times lower than the heat propagation rate, so, accordingly, the relaxation time of diffusion processes is much longer and should be considered in mass transfer equations. Exact analytical solutions of the one-dimensional Guyer-Krumhansl equation are obtained using the operator method. This equation is also used to study heat pulses of different shapes in the medium with respect to phonon/ballistic methods of heat transfer. The obtained results are used to model the heat and moisture propagation in thin films of capillary-porous bodies with account taken of molecular effects in systems of reduced dimension. The very short heat pulses propagation simulating isolated heat waves is modeled with reference to Knudsen number, as well as the solutions for the periodic initial function. The exact solutions of the above problems in the model of thin films of capillary-porous bodies are obtained.
Development and computer testing of equipment for cutting soils with spatially oriented knives of a bulldozer blade
Authors: Maksymiuk Yurii , Rashkivskyi Volodymyr , Prystailo Mykola , Fedyshyn Bohdan
Published: January 2025

The paper uses approaches to the creation and computer testing of a model of an experimental installation for cutting soil with spatially oriented working bodies of earthmoving machines used on construction sites. Today, there is a need for the efficient performance of construction work related to the operation of construction machinery with blade equipment. This, in turn, poses the task of determining the productivity of mechanized earthworks in various working environments. The main method of mechanical soil development is cutting. The main geometric conditions are the position of the cutting wedge edge relative to the cutting direction and the surface of the massif, the contour of the cutting edge, the contour and number of working surfaces of the cutting wedge, the number of so-called side cutting surfaces and the so-called blocked cutting surfaces. The peculiarity of the digging process is that its power and energy indicators depend on the kinematic conditions and geometric parameters - thickness, width and cut area, as well as on the angles of orientation of the working body in space. The creation of such a computer model of the experimental setup is due to the need for continuous improvement of existing equipment and the creation of new equipment to meet existing needs. The model of the experimental setup was created in accordance with the working hypothesis, where the movement of the spatially oriented knife occurs perpendicular to the movement of the blade equipment, at different ratios of the speed of the blade and the movement of the knife, which creates a simple interaction with the working environment, and the deviation of the application of the full cutting force by an angle α. According to the working hypothesis, depending on the plan of movement of the spatially oriented knife, its geometric interaction with the working environment changes and the cutting force changes accordingly. The necessity to create more productive and efficient earthmoving equipment requires the use of modern design solutions. Using the calculations of soil cutting by spatially oriented earthmoving tools in the form of a dihedral blade of dump equipment, a computer study of stress equivalents, linear displacement, yield strength factor, tensile strength factor, and loss of stability factor was carried out. The results are summarized in the form of tabular data and graphical display.
Numerical simulation of the spatial model of a damaged shopping and entertainment complex with parking for assessing the strength and rigidity of structures and creating a reconstruction project based on survey results
Authors: Koshevyi Oleksandr , Rubinskyi Oleksiy , Chubarev Anton , Yansons Maryna , Marchuk Oleksandr
Published: January 2025

The main ideas and possibilities of the created numerical modeling technique of a complex spatial model of research and analysis of the stress-strain state, strength and stiffness of a shopping and entertainment complex with a parking lot at the address: Kyiv, st. Zdolbunivska 17, damaged as a result of the armed aggression of the Russian Federation, based on the results of an engineering survey by visual and experimental methods.With the help of our own software, using the modified method of straight lines, and the calculation software complex LIRA, from the action of the complex load, an assessment of the strength and rigidity of the load-bearing structures was carried out and the possibilities of their restoration and further operation were analyzed.A comprehensive model of the restoration of a damaged building was created, based on VIM technologies, which is used to further make optimal project decisions and significantly accelerates project work.The created numerical research method of the complex spatial model of the damaged building of the shopping and entertainment complex with parking allows, on the basis of conclusions about the strength characteristics of the structures and the building as a whole, to significantly expand the possibilities of making optimal project decisions and creating promising developments based on them.
Volumetric-planning decision of buildings of spiritual educational complexes
Authors: Zhovkva Olha
Published: January 2025

In the modern world, the issue of finding mechanisms for interaction between different religions, increasing the level of tolerance and tolerance towards representatives of other cultures is becoming increasingly relevant and necessary. Strengthening intercultural and interreligious ties will help avoid many conflicts. In this regard, the issue of forming modern spiritual educational complexes with a comfortable multicultural environment for the preparation of tolerant, highly educated public and religious figures is extremely relevant. The purpose of this study is to develop rational volume-planning solutions and recommendations for the design of modern spiritual and educational complexes for representatives of various religions of the world. Also relevant is the search for expressive, modern architectural solutions for these complexes, the architecture of which, at the same time, would not contradict certain canons. Theoretical and empirical methods were used to conduct the research (the method of comparative analysis, field survey of functioning domestic and foreign spiritual educational institutions, grapho-analytical method, which was used to develop several optimal modern volume-planning models, etc.). As a result of the study, scientific principles and recommendations were formulated for the design of a modern spiritual and educational complex for representatives of different religions to obtain different levels of education: from primary to higher education. A functional-planning and volume-spatial analysis of the modern spiritual complex was carried out and the necessary optimal composition of premises was proposed to ensure comprehensive education, as well as intellectual and spiritual development. The use of developed and proposed scientific principles for the design of modern spiritual complexes will contribute to the formation of a harmonious multicultural environment, as well as increasing religious tolerance in society, achieving cultural and religious unity, reducing the level of aggression and intolerance.
Modelling the thermal resistance of layered structures for blocking infrared radiation
Authors: Glyva Valentyn , Burdeina Nataliia , Levchenko Larysa , Krasnianskyi Gryhorii , Biruk Yana , Dovhanovskyi Maksym
Published: January 2025

Ensuring high thermal resistance of building, cladding, finishing and other materials helps to solve the problems of energy efficiency of buildings and energy saving in general. Typically, building and cladding structures have several layers. This makes it difficult to predict their heat transfer. To solve these problems, it is proposed to model the thermal resistance of layered structures. The mathematical functions that should be used in modelling are determined. In particular, the mechanisms of heat transfer due to thermal conductivity and radiant heat transfer are separated. The assumptions and simplifications in the calculations that are acceptable in terms of errors are determined. The use of glass fibres for blocking infrared radiation is theoretically substantiated. The thermal resistance of a layered structure with an arbitrary number of layers and different thermal properties of each layer was modelled. The modelling was carried out using COMSOL tools. Changes in the thermal state of the layered structure in space and time were obtained. The modelling results were verified. Samples of materials based on glass fibre were manufactured and tested using a standard thermal imager. It was found that such a three-layer glass fibre material actually completely blocks infrared radiation at an initial temperature of up to 40 °С. Comparison of the results with the efficiency of a standard thermal insulation product shows that the predominant mechanism for blocking infrared radiation in a glass fibre-based product is the scattering of infrared radiation. This opens up the possibility of using glass fibre fabrics both to increase the thermal resistance of building and finishing materials and to produce infrared camouflage.
Development of general principles of fatigue strength assessment steel structures of nuclear power plants units considering special operation conditions
Authors: Shugaylo Oleksandr , Bilyk Serhii
Published: January 2025

The fatigue strength of the steel structures of nuclear power plants determines the possible period of their safe operation in terms of fatigue damage accumulation. These structures are locatedin special operation conditions, including elevated temperatures of environmental conditions, episodic temperature loads with a significant temperature gradient, etc. Reliable assessment of the fatigue strength of steel structures is of particular relevance because most units at Ukrainian nuclear power plants have already exhausted their design life and are at the stage of long-term operation. At the same time, in terms of fatigue strength assessment, state building codes are focused on traditional steel structures subjected to standard loads and impacts and do not take into account these special operating conditions. Nuclear and radiation safety regulations do not contain technical requirements for calculating the fatigue strength of steel structures and establish only general regulatory requirements. The article develops and formulates general principles of fatigue strength assessment of steel structures of nuclear power plants, taking into account the special operation conditions, as well as the degree of their responsibility for ensuring nuclear and radiation safety.
Understanding Stuttering: A Taxonomic Review of Models, Paradigms, and Theories
Authors: Venkatesan Srinivasan
Published: January 2025

This review article attempts to provide a comprehensive examination of 57 models, theories, and paradigms that have shaped the understanding of stuttering. Stuttering, a complex speech disorder, is characterized by disruptions in fluency. Stuttering has been the subject of extensive research across multiple disciplines, including psychology, linguistics, and neurology. Existing frameworks can be categorized into domains like PSYCHOLOGICAL MODELS, which explore cognitive and emotional factors; NEUROLOGICAL THEORIES, focusing on brain structure and function; and SOCIAL PARADIGMS, emphasizing the role of environment and communication dynamics. Through a critical analysis of these diverse approaches, the interplay between their influences on stuttering is presented. The review also addresses the evolution of these theories over time, noting significant advancements and the integration of interdisciplinary perspectives. Their implications for clinical practice, particularly in the development of effective intervention strategies, are mentioned. By synthesizing current knowledge, this article seeks to foster a deeper understanding of stuttering and encourage future research that bridges gaps between theoretical frameworks and practical applications. Ultimately, the ongoing dialogue surrounding this multifaceted disorder and promoting collaborative efforts in the fields of speech-language pathology and related disciplines is promoted.
Kako stanuju studenti?
Authors: Kelemen Petra , Lončar Sanja
Published: January 2025

Na temelju istraživanja provedenog 2023. godine, u radu se iz etnološke i kulturnoantropološke perspektive razmatra stanovanje zagrebačkih studenata. Cilj je doprinijeti razumijevanju stanovanja studenata kroz usmjereni, dubinski i kvalitativni pogled na materijalne aspekte stanovanja (odabir, oblikovanje/opremanje/mijenjanje prostora stanovanja, materijalne predmete i opremu stambenih prostora i dr.), svakodnevni život, ponašanje, prakse i interakcije vezane za prostore stanovanja te osjećaje i imaginacije vezane uz kuću i dom. Rezultati istraživanja pokazuju kako stambeni prostor svojim karakteristikama uzrokuje, ograničava ili pak potencira određena ponašanja, interakcije sa sustanarima, osjećaje i raspoloženja. Obrađeni primjeri govore o ograničenjima i nedostatcima stambenih prostora koji proizlaze iz njihove često neodgovarajuće veličine i opremljenosti, te o praksama, nerijetko malim intervencijama i opremanju, kojima stanari nastoje prevladati ograničenja, stvoriti praktičan i ugodan prostor i ostvariti ugodan suživot sa sustanarima.Gradnja povezanosti s prostorom stanovanja, stvaranje intime i osjećaja doma zabilježeni su u radnjama opremanja prostora vlastitim predmetima, mirisima, zvukovima te ustaljenim aktivnostima i interakcijama s ljudima i kućnim ljubimcima. Zamišljanje budućih (i idealnih) stambenih prostora povezuje se s idejom o privremenosti (trenutnog stanovanja), a sadašnje i buduće mjesto stanovanja doživljava se kao prostor osamostaljivanja i samostalnosti.Radom se žele trasirati putovi za buduća opsežnija etnološka i kulturnoantropološka istraživanja stanovanja.
An Attempt at a Participatory Approach to Exploring Deaf Culture through the Medium of Film
Authors: Viljetić Gordana
Published: January 2025

The paper presents an overview and practical experience of attending the workshop “Ethnographic Experiments” organised by Kinoklub Zagreb and University College London, 2022/2023, which, upon completion of the theoretical part, resulted in practical exercises – the making of short ethnographic films, including the film “Proba” / “The Rehearsal”, whose premiere was held in May 2024. The latter attempted to approach the research on Deaf culture as inclusively as possible, i.e. in co-creation with the community. Irrespective of the difficulties encountered, valuable connections and relationships have been developed between the narrators and researchers as a guarantee for the continuation of active co-operation in the future.
IMPLEMENTASI MODEL-VIEW-TEMPLATE PADA APLIKASI SURAT KETERANGAN PENDAMPING IJAZAH BERBASI WEB
Authors: Atma Yeyen Dwi , Insan Pramudya Prima , Idris Nasruddin Bin
Published: January 2025

Berdasarkan kualifikasi KKNI setiap lulusan berhak mendapatkan SKPI sesuai keahlian kusus yang dimilikinya. Tujuan penelitian ini adalah merancang bangun aplikasi SKPI pada Universitas Mulia. Metode pengembangan aplikasi SKPI ini menerapkan metode purwarupa dengan pemodelan UML dan penggunaan framework django dengan konsep model-view-template. Dengan sistem SKPI ini diharapkan seluruh calon lulusan Universitas Mulia yang akan yudisium dapat mengisi dan mengunggah semua prestasi dan setifikat sesuai bidang ilmunya, program studi pengelola calon lulusan juga dapat memverifikasi inputan SKPI secara online. Dengan adanya sistem SKPI berbasis web ini diharapkan dapat mempermudah lulusan memperoleh SKPI dan pengelola administrasi penerbitan SKPI berjalan lancar.
MATERIAL LIMBAH BULU AYAM SEBAGAI KOMPONEN PANEL SANWICH AKUSTIK
Authors: Siti Haisah
Published: January 2025

Penyerapan suara pada suatu material begantung pada karakteristik dari material tersebut. Kemampuan penyerapan suara suatu material sangat dipengaruhi oleh kerapatan massa atau densitas. Pada penggunaan dinding akustik yang perlu diperhatikan adalah penggunaan material penyerap suara harus disesuaikan dengan kebutuhan yang mengacu pada standar waktu dengung sesuai fungsi ruang, agar tidak menjadikan kehilangan suara pada frekuensi yang dibutuhkan. Pada penelitian ini material akustik dibuat dengan menambahkan perekat bubuk pada bulu ayam, kemudian dicetak dan dipadatkan membentuk persegi empat dengan ukuran 30cm x 30cm dan ketebalan 2,5cm dengan dua variasi densitas. Dari hasil penelitian dengan perbandingan koefisien absorbsi sampel, dimana koefisien absorbs tertinggi untuk material dengan kerapatan 250 kg/m3 adalah 0,95 pada frekuensi 1350Hz, sedangkan untuk material dengan kerapatan 350 kg/m3juga memiliki koefisien absorbsi tertinggi 0,95 namun pada frekuensi yang berbeda yakni pada frekuensi 950Hz. Berdasarkan hasil penelitian ini dapat disimpulkan bahwa material ini merupakan material penyerap suara yang baik dan layak untuk diaplikasikan sebagai komponen inti panel sandwich akustik