bluuebunny/crossref_metadata_2025 huggingface dataset:
Museen, Objekte und Praktiken
Authors: Wagner Bernd , Zehbe Klaus-Christian
Published: December 2024

Immaterielles Kulturerbe im Rahmen des 2003er Übereinkommens der United Nations Educational, Scientific and Cultural Organization (UNESCO) ist eine Kategorie von Kulturerbe, die oft nur von bestimmten Personen an bestimmten Orten und zu bestimmten Zeiten ausoder aufgeführt wird. Viele Menschen kommen weder in Institutionen noch in ihrem Alltag in Berührung mit diesem Erbe; dies betrifft besonders Kinder. Der an Sachlernprozessen mit Sammlungsobjekten orientierte, didaktische Beitrag setzt hier an. Am Beispiel von Kontaktzonen für Grundschulkinder in historischen Sammlungen wird der Frage nachgegangen, ob und wie sich Kinder aus der Bedeutungsvielfalt von materiellem Kulturerbe (Hahn 2016) immaterielles Kulturerbe erschließen können und wie das Immaterielle Kulturerbe für Perspektiven von Kindern und eine Gestaltung von Zukunft geöffnet werden kann.
Bildung durch immaterielles kulturelles Erbe
Authors: Wulf Christoph
Published: December 2024

In Deutschland schaffen Millionen Menschen vielfältige Formen des immateriellen kulturellen Erbes und mit ihnen wertvolle Praktiken lebendiger Kultur. Mit der Erweiterung des Kulturbegriffs in den achtziger Jahren des letzten Jahrhunderts wurde diese kulturelle Produktivität immer mehr Menschen bewusst. Seither lassen sich unterscheiden ein Kulturbegriff im engeren Sinne, der der UNESCO-Konvention von 1972 zugrunde liegt, und ein Kulturbegriff im weiteren Sinne, der die Grundlage der UNESCO-Konvention von 2003 bildet. Heute wird betont, dass beide Kulturbegriffe mit ihren Formen ineinander verwoben sind. Daher ist es eher richtig, ihre Gemeinsamkeiten als ihre Unterschiede zu betonen. Beide Formen der Kultur schaffen eine gesellschaftliche und soziale Identität. Besonders der weitere Kulturbegriff hat eine erhebliche Bedeutung für die Erziehungs- und Bildungsprozesse der nachwachsenden Generation. Sein Bildungswert wird bislang im Erziehungsund Bildungssystem kaum gesehen. Ihn zu verdeutlichen, ist Ziel dieses Artikels.
Patient characteristics in relation to opioid exposure in a chronic non-cancer pain population
Authors: Grelz Henrik , Jakobsson Ulf , Midlöv Patrik , Fischer Marcelo Rivano , Ringqvist Åsa
Published: December 2024

Objectives

The efficacy of long-term opioid therapy (LTOT) in treating patients with chronic non-cancer pain (CnCP) is questionable, and the potential risks of adverse effects are well established. The aims were as follows: (1) compare characteristics in patients exposed to LTOT vs non-exposed. (2) Regarding opioid-exposed patients, describe characteristics of patients with risk factors for opioid use disorder or overdose in relation to opioid dosage.

Method

A cross-sectional study was conducted at a Swedish tertiary pain rehabilitation clinic serving CnCP patients. The study population comprised 1,604 patients ≥18 years old registered in the Swedish Quality Registry for Pain Rehabilitation between 2018 and 2020. Data on dispensed opioids were extracted from the Swedish Prescribed Drug Register. Dependent variables were as follows: LTOT vs non-LTOT and exposed opioid dosage <50 mg morphine equivalent/day (MME/day) vs ≥50 MME/day.

Results

Of the included patients, 681 (42.5%) had at least one dispensation of opioids 180 days prior to assessment, 601 with a calculated opioid dosage ≥1 MME/day, and 424 (26.4%) were exposed to LTOT. The type of opioid prescribed was, in descending order, oxycodone (42.3% of all dispensations), codeine in combination with paracetamol (17.6%), tramadol (13.8%), and morphine (8.1%). A total of 89 cases had dosages of ≥50 MME/day and 430 patient dosages <50 MME/day. Patients exposed to LTOT exhibited an increased odds ratio (OR) of 2.685 (95% CI, 1.942–3.711) for concomitant use of benzodiazepines and male sex (OR, 1.694; 95% CI, 1.227–2.337). Patients receiving doses ≥50 MME/day were all, except one, exposed to LTOT. The concomitant use of benzodiazepines (OR 1.814, 95% CI 1.264–3.331) and male sex (OR, 1.777; 95% CI, 1.178–3.102) indicated a higher OR for opioid doses ≥50 MME/day.

Conclusions

LTOT strongly influenced the opioid dose. Furthermore, concomitant benzodiazepine dispensation and male sex were over-represented in patients exposed to LTOT as well as those exposed to opioid doses ≥50 MME/day.
The significance of taurine for patients with Crimean-Congo hemorrhagic fever and COVID-19 diseases: a cross-sectional study
Authors: Çelik Şimşek , Aydın Hüseyin , Tekin Yusuf Kenan , Ertemur Zeynep , Korkmaz İlhan , Yurtbay Sefa , Engin Aynur
Published: December 2024

Objectives

In this study, we aimed to evaluate the change in taurine levels in two diseases [Crimean-Congo hemorrhagic fever (CCHF) and novel coronavirus disease (COVID-19)], which have a significant impact on public health as they frequently cause mortality and morbidity.

Methods

This observational, cross-sectional study was conducted between September 15, 2023, and November 30, 2023, at the Emergency Department, Sivas Cumhuriyet University Faculty of Medicine. There were three groups in our study. These groups were 35 COVID-19 patients with confirmed diagnosis, 35 CCHF patients, and a control group consisting of 35 healthy volunteers who were similar to these patient groups in terms of age and gender. Plasma amino acid levels of taurine, β-alanine, arginine, carnosine, cystine, histidine, lysine, and methionine were measured and compared in these three groups.

Results

In the pairwise comparison of the groups, the increase in taurine plasma levels in CCHF (p<0.001) and COVID-19 (p=0.002) patients compared to the control group was statistically significant, whereas the difference between CCHF and COVID-19 patient groups was not significant (p=0.303). Multinomial logistic regression analysis revealed that taurine, β-alanine, arginine, and lysine levels were significant predictors in differentiating patients with CCHF and COVID-19 from healthy individuals.

Conclusions

We concluded that it may be important to determine taurine levels during the treatment and observation processes of these two diseases, which seriously affect public health. This study will contribute to a better understanding of the pathogenesis of the CCHF and COVID-19 diseases.
A DRT-RS COMO FERRAMENTA DE PESQUISA SOBRE OS TRABALHADORES NEGROS DE PELOTAS DE 1933-1944
Authors: Oliveira Ângela Pereira , Machado Lopes Aristeu Elisandro
Published: December 2024

Resumo: O presente estudo busca inicialmente apresentar o acervo da Delegacia Regional do Trabalho do Rio Grande do Sul como uma fonte para pesquisas no mundo do trabalho, mais especificamente, como uma ferramenta para futuras pesquisas que visem encontrar os trabalhadores negros. Serão apresentados dados quantitativos sobre estes trabalhadores como um quadro geral comparativo entre as denominações de cor da pele. Abordaremos essa mão-de-obra atuante no século XX entre os anos de 1933 a 1944, visando localizar a atuação desses operários na cidade Pelotas nas indústrias locais. Destacando aspectos como as profissões e funções desempenhadas por estes profissionais. Por fim, serão destacadas características gerais que possam auxiliar no entendimento de um perfil destes trabalhadores.Abstract: The present study intends to, initially, introduce the Rio Grande do Sul State Work Office archive as a source of work-themed research, more specifically, as a tool for future research aimed at finding Black workers. Quantitative data on these workers, in a general comparative framework between skin color denominations, will be presented. We also intend to discuss this hand labor acting in the twentieth century, between 1933 and 1944, aiming to find the performance of these workers in the city of Pelotas in local industries, highlighting aspects such as the professions and functions performed by these employees. Finally, we will highlight general features that can assist in the understanding of these workers’ profile.
A QUESTÃO RACIAL NA FORMAÇÃO DO PENSAMENTO SOCIAL BRASILEIRO - LEI 10639/03, O SERVIÇO SOCIAL E A ACADEMIA
Authors: Medeiros Kruger Nino Rafael , Silva de Avila Carla , Da Cunha Myriam Siqueira
Published: December 2024

Resumo: O presente trabalho tem por objetivo subsidiar a discussão que se tem feito a respeito da não concretização dos direitos garantidos pela Lei 10639/03, analisar a origem das relações étnicas raciais desiguais, apresentando o Assistente Social como figura que tem em seu código de ética os fundamentos para atuar ao lado de movimentos sociais, bem como o combate a qualquer tipo de preconceito, e o papel da academia na formação de profissionais que iram colocar esta e outras políticas públicas em pratica.Abstract: This following work has the objective of subsidize the discussion that has been made about the non-concretization of the rights guaranteed by the Law 10639/03, to analyze the origin of the unequal ethnic relations, presenting the Social Worker as a character that has in their ethics code the foundations to act beside the social movements, and to combat any kind of prejudice, and the role of the academy on the formation of the professionals that will put this and others public policies into practice.
RESENHA DO LIVRO CONSERVATION PRATICES ON ARCHAEOLOGICAL EXCAVATION: PRINCIPLES AND METHODS. CORRADO PEDELI E STEFANO PULGA, 2013.
Authors: De Aguiar Silva Azevedo Paula
Published: December 2024

Resumo: Na busca da conservação de qualquer material é necessário entender as suas particularidades, perceber as suas necessidades e aprender as características do contexto desse material. Quando falamos de remanescentes arqueológicos, nosso entendimento deve alcançar toda a sua trajetória, sendo imprescindível que a conservação desses materias se dê desde a  escavação arqueológica. No livro Conservation Pratices on Archaeological Excavation: Principles and Methods de Conrrado Pedeli e Stfano Pulga, temos importantes informações sobre princípios e métodos de conservação in situ, numa visão ampla que abarca diversas tipologias de materiais e sítios arqueológicos. Se constituindo como um guia que direciona as ações do conservador-restaurador.  Abstract: In the search for the conservation of any material it is necessary to understand its particularities, perceive its needs and learn the characteristics of the context of this material. When we speak of archaeological remnants, our understanding must reach all its trajectory, being essential that the conservation of these materials is given since the archaeological excavation. In the book Conservation Pratices on Archaeological Excavation: Principles and Methods by Conrrado Pedeli and Stfano Pulga, we have important information on principles and methods of in situ conservation, in a broad vision that encompasses several types of archaeological materials and sites. Constituting itself as a guide that directs the actions of the conservative-restorer.
Uma perspectiva metodológica para o estudo epigráfico: O caso de Sagunto ( I d.C.)
Authors: Campos Carlos Eduardo da Costa
Published: December 2024

RESUMO: A proposta é de apresentar uma metodologia para análise epigráfica que seja útil aos pesquisadores de História. Afinal, acreditamos que metodologia para epigrafia pode auxiliar a extrair diversas informações preciosas para uma pesquisa que poderiam ser omitidas em uma análise superficial. Assim iremos expor as etapas e categorias de análise com um estudo de caso sobre a cidade romana de Sagunto, no século I d.C..ABSTRACT: The paper is a somewhat indirect part of the 'theme essay' around which the present volume is organized. The proposal is to present a methodology for epigraphic analysis that is useful to researchers of history. We focus on segmenting the methodology. Therefore, it has the interest to provide a more thorough analysis and more details about the information contained in the epigraphs.
The Impact of Aphantasia on Mental Healthcare Experiences
Authors: Mawtus Bridget , Renwick Fran , Thomas Bethany R , Reeder Reshanne R
Published: December 2024

Approximately 4% of the population has aphantasia, which is defined as impoverished, or absent, sensory mental imagery. Previous research suggests that people with aphantasia (aphants) may have a higher prevalence of mental health conditions and neurodivergence compared to the general population, but aphantasia presents a special challenge for diagnosis and treatment. Many mental health conditions are currently characterized by imagery-related symptomology (such as sensory flashbacks in post-traumatic stress disorder or negative body image in eating disorders), and the dominant therapeutic treatments rely heavily on imagery techniques. Thus far, little is known about how this impacts mental healthcare experiences in individuals with aphantasia. In the current study, we used a mixed-methods (questionnaire, interview) approach to comprehensively investigate the effects of aphantasia on seeking diagnoses and treatments for mental illness. Quantitative analyses on the questionnaire data revealed that virtually all psychiatric disorders manifest with a lack of imagery-related symptomology in aphantasia compared to typical imagery controls; aphants report “lack of awareness or understanding of aphantasia” as a common factor in missed- or misdiagnosis by mental health professionals, although the prevalence of missed and misdiagnoses are no different from typical imagery controls; and aphants are very likely to report that therapies involving mental imagery, especially visual imagery in CBT, are ineffective in their mental health treatment compared to controls. Two main themes were generated following qualitative analysis of interviews: Quest for Identity and Mental Health Journey. Feelings of being different, memory challenges, and self-discovery based on help-seeking contributed to the first theme. Aphants found different levels of success in their mental health journeys depending on whether they experienced anxiety and/or depression, neurodiversity conditions, or trauma and/or complex mental health conditions, with the latter group critically relying on professional empathy and understanding for positive outcomes. Together, these results point to a widespread impact of aphantasia on diverse aspects of mental healthcare.
Comparative Analysis of CNN Architectures in Siamese Networks with Test-Time Augmentation for Trademark Image Similarity Detection
Authors: Suyahman  , Sunardi  , Murinto
Published: December 2024

Purpose: This study aims to enhance the detection of trademark image similarity by conducting a comparative analysis of various Convolutional Neural Network (CNN) architectures within Siamese networks, integrated with test-time augmentation techniques. Existing methods often face challenges in accurately capturing subtle visual similarities between trademarks due to limitations in feature extraction and generalization capabilities. The research seeks to identify the most effective CNN architecture for this task and to assess the impact of test-time augmentation on model performance.
Methods: The study implements Siamese networks utilizing three distinct CNN architectures: VGG16, VGG19, and ResNet50. Each network is trained on a dataset of trademark images to learn deep feature representations that can discriminate between similar and dissimilar trademarks. During the evaluation phase, test-time augmentation (TTA) is applied to enhance model robustness by averaging predictions over multiple augmented versions of the input images. TTA includes transformations such as random rotations (up to 40%), width and height shifts (up to 20%), random shear transformations, zooming (up to 20%), horizontal and vertical flips, and random brightness adjustments.
Result: Experimental findings reveal that the Siamese network based on VGG19 achieves the highest accuracy at 98.82%, outperforming the VGG16-based network with an accuracy of 97.07% and the ResNet50-based network with 50.00% accuracy. The application of TTA has improved performance across all models, with the VGG19 model receiving the highest improvement. The extremely low accuracy of ResNet50 can be attributed to its misinterpretation of original trademark images as close-forged ones, probably due to overfitting or lack of an efficient ability in generalizing very fine visual features.
Novelty: The study conducted a comparative analysis of CNN architectures, namely VGG16, VGG19, and ResNet50 in Siamese networks for trademark image similarity detection.
The Enduring Legacy of the First Nesvizh Radziwill Ordination Library in Lithuania: Results of Recent Research
Authors: Misiūnienė Jadvyga
Published: December 2024

The year 1749 is considered the beginning of the Nesvizh Radziwill Ordination Library. It was in this year that, by order of Michał Kazimierz Radziwiłł ‘Rybeńko’ (1702–1762), the Grand Hetman of Lithuania and Voivode of Vilnius, a new building was erected in Nesvizh specifically for the castle’s library. The Grand Ducal Library established there accumulated three collections of books: the old Nesvizh collection, the Biały Palace collection, and the collection of Jacob Heinrich von Flemming (1667–1728), the former Prime Minister of Augustus II and brother-in-law of Radziwiłł ‘Rybeńko’. In 1772, the Radziwiłł Ordination Library – the largest private book collection in the entire Polish-Lithuanian Commonwealth at the time – was taken away from Nesvizh by the Russian army as a war trophy. This article discusses the legacy of the First Nesvizh Radziwiłł Ordination Library that has survived in the libraries of Lithuanian memory institutions and private collections. It examines the provenance marks of the books, compiles a bibliographic list of books (manuscripts), and supplements it with new findings. Based on the results of historical and provenance research, some erroneous statements that have persisted in Lithuanian historiography have been corrected.
Relationship Between Environmental Concern, Green Perceived Value and Green Purchase Behaviour: The Moderating Role of Price Consciousness
Authors: Van Hoang Dinh , Le Thanh Tung
Published: December 2024

Growing environmental concerns influence consumer buying decisions and behaviours. This study investigates the factors that affect the green purchase behaviours of Generation Z consumers in Vietnam. Employing the value–attitude–behaviour (VAB) framework, the study examines the intricacies of green consumption behaviour. Study data were collected through an online questionnaire from 283 young Vietnamese consumers who frequently purchase green products. We performed the quantitative analysis by the partial least squares structural equation modelling (PLS-SEM) and found that price consciousness and attitude towards green products directly influence green purchase behaviour. Environmental concern and green perceived value indirectly influence green purchase behaviour through consumer attitude. Furthermore, the influence of price consciousness enhances the relationship between attitude and green purchase behaviour. These findings provide valuable implications for managers aiming to attract young, environmentally conscious consumers and promote green consumption behaviours.
Polymeric membranes grafted by ionizing radiation for uranium adsorption
Authors: Patricio Cardoso Amanda Caroline , Lazzari Garcia Rafael Henrique , Fontenele Urano de Carvalho Elita , Al-Sheikhly Mohamad , Kodama Yasko
Published: December 2024

Fuel elements production by IPEN-CNEN has a perspective to be increased to attend Brazilian Multipurpose Reactor, under construction. This production generates liquid waste that requires proper treatment to minimize environmental impacts, promoting more sustainable practices. Considering the rise on nuclear power energy generation, and that there is global lack of terrestrial uranium sources, the increasing demand for this element has been leading to uranium exploit alternatives. So, several researches are available on uranium adsorption from sea water. Adsorption is one of process for removing metals from wastewater, due to its high selectivity and low environmental impact. Taking into account this scenary, in this study, Winged Polypropylene (WPP) fabric was grafted via ionizing radiation (RIG) with the monomer Bis[2-(methacryloyloxy) ethyl] phosphate (B2MP). RIG promotes functionalization of WPP with phosphate groups that are prone to capture U from solution. Synthesized WPP-g-polyB2MP membranes were characterized by Scanning electron microscopy (SEM), Raman spectroscopy, thermogravimetry and, uranium adsorption capacity by ICP-OES and gamma spectrometry. WPP-g-polyB2MP membranes were successfully synthesized by ionizing radiation grafting direct method. Reaction parameters, like reactants concentration, radiation absorbed dose, affected the degree of grafting (DoG). By physico-chemical characterization results it was possible to observe DoG differences with parameters variation. Optimization of these parameters was sought in order to achieve uranium adsorption, and to increase the adsorption capacity of the membrane.
The Interrelation between Self-Esteem and Value Orientations of Russian Students
Authors: Rean Arthur A. , Egorova Anna V. , Konovalov Ivan A. , Kuzmin Roman G. , Shevchenko Andrey O. , Stavtsev Alexey A. , Rean Kristina A.
Published: December 2024

Introduction. The well-being of student youth is in the focus of the tasks of state programs of educational and youth policy. The international socio-political situation poses the tasks of actualization and formation of value orientations of the young generation. In modern psychological and pedagogical science, a significant number of studies are devoted to the problem of well-being, its correlates and risks. However, relatively few works are devoted to the topic of correlation between self-esteem as a component of psychological well-being and value orientations. The aim of the research is to study the values of modern Russian students in the context of the specifics of self-esteem.
Materials and Methods. The study involved 2,315 university students from 10 cities of the Russian Federation. Self-esteem was analyzed using the Rosenberg Self-Esteem Scale in the adaptation of A. A. Zolotareva, and the Schwartz Value Questionnaire (PVQ-R2) was used to study students’ axiological orientations. The correlations between self-esteem and value orientations among students were determined using by correlation analysis using the Spearman method. In order to identify differences between groups with low and high levels of self-esteem (self-esteem), Student’s t-test for independent samples and Mann-Whitney U-criterion was used to test the consistency of the results.
Results. Data analysis has shown that most values, except for “Power – Dominance”, “Power – Resources” and “Face”, have a significant correlation with self-esteem. The majority of these values have a positive correlation, while a negative correlation was found between “Humility”, “Conformity – interpersonal”, and self-esteem. In other words, in most cases, it can be said that the higher a student’s self-esteem, the more prominent their value orientations are. These correlations correspond to significant differences in the expression of values among students with relatively high and low levels of self-esteem.
Discussion and Conclusion. The conducted research deepens our understanding not only of the specifics of the modern Russian students’ axiological positions, but also of how the indicator of subjective well-being, measured by the level of self-esteem, relates to them. The results obtained can be used as part of the development of educational concepts, value-based motivational strategies, for working with at-risk students, and designing adaptation and development programs.
The Trends and Development of Russian Language Teaching in Modern China
Authors: Liu Zhiqiang , Li Diandian
Published: December 2024

Introduction. Innovative approaches to the training of specialists in Chinese educational institutions are driven both by globalization processes, which imply international cooperation in various fields, and by national interests aimed at the development of the economy and other spheres of life in the country. The international interaction between China and Russia in various fields also defines cooperation in education, which is in line with the principles of the state initiative “One Belt, One Road”. This study identifies issues in the education of future specialists in the context of the development of a digital society and international connections. The aim of the article is to describe the problematic areas in the training of specialists at Jiangsu University of Science and Technology against the backdrop of the challenges faced by graduates of other universities in China that prepare professionals for international cooperation with Russia.
Materials and Methods. The research material is based on the authors’ practical observations of the Russian language teaching at the Jiangsu University of Science and Technology and on the articles of Chinese scholars on the subject. Descriptive and analytical methods are used to analyze the works.
Results. The article analyzes new trends in higher education, such as the integration of language modules into professional programs under the “Russian Language + Specialty” model, the use of digitalization opportunities in teaching, and teacher and student exchanges. It also identifies existing problems in language education: outdated methodologies and teaching materials, a focus on testing at the expense of a communicative approach, and other issues that need to be addressed as student motivation remains low.
Discussion and Conclusion. The article suggests measures to increase the effectiveness of Sino-Russian educational contacts, including in the field of Russian language teaching within the framework of the “One Belt, One Road” initiative. Among them, the authors consider diversification of Sino-Russian joint educational projects, integration of ideological and political principles of China’s state development into Russian language teaching, etc. The results contribute to the development of the Chinese system of Russian language teaching integrated into professional university education programs.
Back to the Family: Rethinking the Role of Parents in Schooling (Сase of the Republic of Guinea)
Authors: Fofanova Katerina V. , Conde Adama
Published: December 2024

Introduction. The problem of the interaction between family and school is being actively discussed in a number of African countries in the context of the active reform of the education sector. On the one hand, the educational system is being modernized; on the other hand, the potential of traditional education remains, emphasizing the special role of the family in the formation of fundamental values as the main vector of modern educational reform in Africa. The purpose of this article is to identify the role of the family in the education of schoolchildren and the development of education in Guinea, based on an expert survey.
Materials and Methods. The theoretical basis of the study was the approach of P. Bourdieu and J.-C. Passeron which reveals the principles of the educational system, the conditions for the success of the educational process, the influence of the cultural and linguistic capital of the family on the success of the child. The empirical basis is statistical data, expert interviews with teachers, school principals, employees of the Ministry of Education of the Republic of Guinea (N – 20 people).
Results. The study identifies trends in the development of school education in the Republic of Guinea, and provides an expert assessment of family and school cooperation in the process of education and upbringing of schoolchildren. The study shows that although the country declares a universal and free right to education, the inequality of educational opportunities for children reproduces a wide gap between the strata of Guinean society. To a greater extent, inequality in access to education is linked to the place of residence. According to the experts, the solution to the current problems in Guinea’s education system depends not only on the school and the government’s education policy, but also on the family. The experts highlighted the growing role of the family in the education of children and identified the main forms of interaction between school and family: constant contact with teachers and the administration, participation in the development and adaptation of curricula, in civil society structures (APEAE), etc.
Discussion and Conclusion. On the basis of expert opinion, the expediency of developing forms of interaction between schools and families is justified. The material in this article may be of interest to educational researchers, teachers and specialists involved in the development of educational policy in Guinea.
Size-dependent nonlinear bending of tapered cantilever microbeam based on modified couple stress theory
Authors: Bui Thi Thu Hoai  , Ich Le Cong , Kien Nguyen Dinh
Published: December 2024

The Euler-Bernoulli beam theory is adopted in conjunction with modified couple stress theory (MCST) in this paper to formulate a beam element for size-dependent nonlinear bending analysis of a tapered cantilever microbeam subjected to end force/moment. The microbeam is considered to be linearly tapered in both the width and height directions. The element is derived in the context of the co-rotational approach in which the internal force vector and the tangent stiffness matrix are firstly derived in an element attached coordinate system and then transferred to the global one by the transformation matrices. An incremental/iterative procedure is adopted in conjunction with the arc-length method to compute the response of the microbeam. The obtained results show that the formulated element is efficient, and it is capable to model accurately the size-dependent nonlinear response of the microbeam by using just several elements. It is shown that the size effect plays an important role on the large deflection response, and the displacements of the microcantilever are overestimated by ignoring the influence of the micro-scale size effect. The effects of the material length scale parameter and the tapered ratio on the nonlinear behavior of the microbeam are studied in detail and highlighted.
Aerofoil optimization using SLSQP and validation using numerical and analytical methods
Authors: Srinath R.  , R. Mukesh , Inamul Hasan  , P. Radha Krishnan
Published: December 2024

Aircraft design optimization is one among the research enriched topic in the aerospace industry, with enhancing aircraft performance, safety, and efficiency numerous being the prime focus areas. The work done demonstrates the application of the Sequential Least Squares Programming (SLSQP) technique over a symmetrical aerofoil “NACA 0012” to improve its aerodynamic performance. The optimized aerofoil is validated using Design and Analysis Tools for Composite Aircraft (DATCOM) and Computational Fluid Dynamics (CFD) methods. The study focuses on optimizing the performance of a symmetric aerofoil, where drag minimization is crucial, subject to list constraints, such as in the design of fuel-efficient aircraft. The results reveal, the optimized aerofoil has a significant reduction in drag coefficient of closer to 11 % between 8° and 10° compared to the initial design. The validation using DATCOM and CFD methods confirms the accuracy and usefulness of the optimization results. Validation error values are found to be negligible when compared to the optimization data, coming in at 5.7% and 6.5% for DATCOM and CFD, respectively. The paper highlights that the SLSQP technique is efficient and reliable optimization method for designing high-performance aerofoils.
FLOUR QUALITY STABILIZATION AT A LOW PRODUCTIVITY MILL
Authors: Zhygunov D. , Voloshenko O. , Khorenzhy N. , Kovtun A.
Published: December 2024

The article provides an analysis of the quality indicators of wheat flour and their stabilization with the help of enzyme preparations. 12 samples of industrially milled flour produced at a mill with a productivity of 70 tons per day were studied. It was established that the Whiteness indicator in the studied flour samples was stable and averaged 57 units. According to the gluten content and gluten deformation index, the studied samples were stable and met the requirements of regulatory and technical documentation. The largest fluctuations were noted for the Falling Number indicator. The Falling Number indicator in the studied flour varied from 309 s to 477 s. To stabilize the quality of finished products, the FN indicator in flour was adjusted by adding the enzyme preparation "Amilorizine". Addition of Amilorizine did not change the whiteness of the flour, the gluten content and its elastic properties. However, the indicator of the Falling Number in flour varied inversely proportionally depending on the amount of the added enzyme preparation. Addition of Amilorizine in the amount of 0.03 % reduced the Falling Number by 15-18 s, 0.06 % – by 30-35 s, 0.12 % – by 55-65 s. Analysis of the baking test results showed that the loaf from control samples of the flour without the addition of the enzyme preparation had a light, pale color of the crust compared to the other samples, the crust of which acquired a light yellow and light brown color. The addition of the enzyme preparation led to an increase in the volumetric yield of loaf. The volume of the studied samples increased by 10-25 % at the maximum dosage of the enzyme preparation, the appearance of the finished loaves became more attractive - the color of the crust acquired a more golden-brown color, the surface became even and smooth. According to the results of the research, a positive effect of Amilorizine on the baking quality of flour was revealed. The use of an enzyme preparation will allow to stabilize the Falling Number in flour with low amylolytic activity of its own enzymes without deterioration of other technological indicators.
Split curvature
Authors: Kiosak Volodymyr , Latysh Oleksandr , Kuzmich Valeriy
Published: December 2024

We consider spaces with a special kind of Riemannian tensor. It is proved that they are semisymmetric spaces. These spaces are divided into three types and we investigate nontrivial geodesic mappings for each type. In particular, it is proved that if these spaces admit nontrivial geodesic mappings, then they have a constant scalar curvature.
Exploring the mindset of social entrepreneurs towards failure: Evidence from focus group interviews
Authors: Wronka-Pośpiech Martyna
Published: December 2024

Background: Failure is a common aspect of entrepreneurship due to high uncertainty. This study examines the specific context of social entrepreneurship, which combines profit goals with social missions.
Research objectives: The primary objective is to understand social entrepreneurs’ mindsets towards failure.
Research design and methods: The study employs focus group interviews (FGI) with social entrepreneurs, representatives from Social Economy Support Centres, and government delegates in three major Polish cities.
Results: Findings reveal diverse perceptions of failure among social entrepreneurs. They view failure both as a setback and an opportunity for growth. The study identifies financial instability and mission drift as common failure factors, and highlights the profound emotional and social impacts of failure.
Conclusions: Social entrepreneurs’ perception of failure is complex, influenced by their dual focus on financial sustainability and social impact. These insights can help develop better support mechanisms for social enterprises, promoting resilience and learning from failure.
Innovative Low-Noise Amplifier Design for Enhanced RF System
Authors:   Student Researcher, Department of Electrical Engineering, UTD, USA, Marri Sai Kumar , E Sikender ,   Student Researcher, Department of Electronics and Communications Engineering, VCE, India
Published: December 2024

Low-Noise Amplifiers (LNAs) are critical components in radio frequency (RF) systems, serving as the
initial stage in receivers to amplify weak signals while minimizing noise contributions. This paper explores innovative
LNA design methodologies aimed at enhancing RF system performance across various applications, including 5G,
satellite communications, and IoT. The focus is on leveraging advanced CMOS, SOI, and GaAs technologies to
achieve an optimal balance between noise figure, gain, linearity, and power efficiency [3].
Key design strategies discussed include inductive degeneration for noise matching, cascode topologies for improved
isolation and stability, and magnetic feedback for enhanced input-output linearity. Additionally, advanced techniques
such as simulated annealing algorithms and black-box modelling are introduced to optimize device parameters and
streamline the design process [4].
Since the LNA is component that will set the noise figure for the rest of the receiver system. The purpose of this
experimental study is to design an LNA that will be able to meet the required specifications. The specification on
matching, noise figure, gain, and linearity are very important in LNA design. In this report we will discuss our design,
layout of the LNA, and discuss how our design exceeded the required specifications, even with a 5% variation for the
inductor dimensions and a 10% variation for the capacitor dimensions [1].
This work highlights the potential of innovative LNA designs to address the growing demands of next-generation
wireless communication systems, offering insights into achieving superior performance in compact and efficient
architectures.
Değişim Konusunun Muhafazakâr Düşünce Geleneğindeki Görünümü
Authors: Nükte Serdar
Published: December 2024

Bu makalenin amacı, muhafazakâr düşünce geleneğinin değişim konusuna yönelik temel fikirlerini analiz etmektir. Muhafazakâr düşünce hem Doğu uygarlığında hem Batı uygarlığında kendine yer edinmiş önemli bir fikir sistemidir. Muhafazakârlık, Fransız Devrimi’nin sonuçları açısından toplumda önemli değişimlere neden olduğuna inanmıştır. Devrim sonrası ortaya çıkan yeni düzenin, toplumsal değerleri yozlaştırdığını ileri sürmüştür. Muhafazakâr düşünürler, söz konusu yozlaşmaya neden olan asıl gerçekliği değişim konusu üzerinden tahlil etmiştir. Muhafazakârlığın değişim konusuna dair benimsediği bu tavır, tesadüfî bir durum değildir. Üstelik, muhafazakârlığın değişim konusuna dair tezleri, onu hem diğer fikrî ideolojilerden ayıran hem de günümüzde hâlâ etkin bir düşünce sistemi olarak devam etmesini sağlayan etkenlerden görülmelidir. Değişim konusu, muhafazakârlıkta kendisine şüpheyle yaklaşılan bir alan kabul edilmiştir. Bunun anlaşılması için muhafazakâr düşünce geleneğinin değişim konusuna ilişkin yaklaşımının temel bileşenlerinin doğru anlaşılması gerekmektedir. Çünkü, muhafazakâr düşünce, devrim sonrasında yeni bir şekle bürünen toplum yapısına bir bütün olarak karşı çıksa da, aslında bu durumu değişim konusu üzerinden temellendirme yoluna gitmiştir. Bu nedenle, muhafazakârlığın değişim konusuna dair görüşleri, onun bir düşünce sistemi olarak ne içerdiğinin de cevabını oluşturan bir etkiye sahiptir. Değişim meselesinin ortaya çıkışından bu yana muhafazakârlığın üzerine en çok tartışıldığı konulardan biri olması bunu kanıtlar niteliktedir. Bunun sebebi, muhafazakârlığın değişimin her biçimini reddettiği düşüncesinden kaynaklanmaktadır. Oysa, muhafazakâr düşünce, değişimi bir bütün olarak yok saymamış, onun yalnızca aşırı biçimine ve uygulanış şekline karşı çıkmıştır. Dolayısıyla da, değişimin birtakım ilkeler ışığında gerçekleşmesi gerektiğine inanmıştır. Nitekim, muhafazakâr literatür incelendiğinde, sosyal bilimcilerin değişim konusuna yönelik iki bulguyu öne çıkardıkları görülmektedir. Bunlardan birincisi, toplumun hızlı ve ani değil, ihtiyatlı ve yavaş bir biçimde değişime girmesi gerektiğidir. İkincisi, değişim sürecine giren toplumun, geçmişini ve geleneğini göz ardı etmeden, yani tarihsel birikimini dikkate alarak bu süreci tamamlaması gerektiği düşüncesidir. Bu makale, muhafazakâr düşüncenin, değişim konusuna dair temel yaklaşımını sözü edilen iki ilke üzerinden ortaya koymayı hedeflemektedir.
Optimizing Ict Tools for Dissemination of Covid19- Information by Librarians in Nigerian Academic Libraries
Authors: Odunayo Halimah , Onanuga Ayotola
Published: December 2024

Information Communication Technology tools have been considered indispensable tools for successful delivery of library services especially in the COVID 19 global pandemic. This study answers three research questions about ICT tools as it is applicable to librarians for dissemination of information during Covid-19 era. First, how often do information professionals use ICT tools for dissemination of covid-19? Second, what are the ICT tools used for dissemination of covid-19 information, third, what benefits do information professionals’ derive from usage of ICT tools as well as challenges they encounter in getting information about covid-19 across to their patrons using ICT tools ?. Data were obtained in both quantitative and qualitative formats using one hundred and forty-four librarians as respondents. Total enumeration sampling technique was adopted because the population was minimal. Findings of the study revealed that; ICT tools are being used regularly by librarians for dissemination of covid-19 information, Videoconferencing, WhatsApp, Teleconferencing, Web-based Learning Applications, LinkedIn, Instagram , Software programmes and Facebook were identified as the ICT tools being used by librarians in Nigerian academic libraries for dissemination of covid-19 information, ICT tools are useful and beneficial to librarians as; it facilitates easy participation and engagement of library users in discussions pertaining to covid-19 which in turn curbs the spread of the virus, it facilitates easy education of students about the virus itself and to teach basic hygiene, with ICT tools, Covid 19 information is easily shared between librarians and their users, it also brings about reduction in the barrier of social distancing. The study also found epileptic power supply, poor infrastructure, inadequate funding, low band - with and lack of search skills as the major impediments to successful usage of ICT tools for dissemination of covid-19 information. Thus, it was recommended that libraries across Nigeria should prioritize training of their staff on the required digital skills they need to be able to cope in this advanced technology era.
Ankara Vakıf Eserleri Müzesi, Şeyh Bahşi Mescidi Vaaz Kürsüsü Mevcut Koruma Durumu ve Önerileri
Authors: Yıldırım Altun Cemile , Cura Murat
Published: December 2024

Ahşap, Tarih Öncesi Çağlar’dan günümüze kadar hem yapı malzemesi ve elemanı olduğu kadar süsleme ve çeşitli eşyaların yapımında kullanılmıştır; kültürel mirasın göz alıcı eserlerinin yapılmasında önemli rol oynamıştır. Ahşap eserlerin korunması ve onarımı, birçok farklı alandan uzmanlar arasında multidisipliner bir iş birliğini gerektirmektedir. Çalışma kapsamında geleneksel koruma onarım yöntemlerinin yanı sıra modern teknolojik gelişmelerden de yararlanılmıştır. Bu doğrultuda, çalışmamız kapsamında, Ankara Vakıf Eserleri Müzesi’nde bulunan 2238 envanter numaralı Kütahya Şeyh Bahşi (Balıklı) Mescidi Vaaz Kürsüsü’nün 3 boyutlu fotogrametrik taramaları yapılmış, eserlerin mevcut durumlarının tespiti sonrası koruma önerileri hazırlanmıştır. Böylece ileri teknolojik gelişmelerin koruma ve onarım işlemlerindeki avantajları belgelenmiş ve gerekliliği önerilmiştir. Eserlerde görülen bozulma etken ve faktörleri saptanmış ve farklı eserlerde de uygulanabilir bozulma tablosu oluşturulmuştur. Bu çalışma, ahşap kültür varlıkları üzerinde, üç boyutlu teknolojileri geleneksel yöntemler ile harmanlayarak, sürdürülebilir teknikler geliştirmeyi ve ortaya çıkan bu inovatif çözümleri koruma onarım alanına entegre ederek, kılavuz bir kaynak olmayı hedeflemiştir.
Investigation of the conditions (nature) of pentacoordinated aluminum oxide formation
Authors: Solodovnikova P. A. , Mashkovtsev M. A. , Rychkov V. N. , Ginko G. V. , Telegin T. E. , Ugryumova M. V.
Published: December 2024

Aluminum oxide is widely used as a catalyst carrier, including in internal combustion engine systems, where operating temperatures exceed 1000 °C. As such, aluminum oxide must exhibit enhanced thermal stability. This property is linked to the presence of pentacoordinated centers on the surface of the γ-phase of Al2O3. This paper examines the effect of the pH during aluminum hydroxide precipitation on the formation of pentacoordinated centers on the surface of aluminum oxide. The samples of aluminum hydroxide were synthesized via controlled double-jet precipitation, followed by thermal decomposition into oxides. Precipitation was carried out at constant pH levels, and for comparison, parallel samples were synthesized at pH values of 5, 6, 7, 8, and 9. The precursors for precipitation were a 1 M aluminum nitrate solution (Al3+) and a 10 wt. % ammonia solution (NH4OH). The solutions were introduced into the reactor in a dropwise mode with continuous stirring. The resulting aluminum oxide samples were analyzed using X-ray diffraction and nuclear magnetic resonance techniques. The data show a direct correlation between the pH of aluminum hydroxide precipitation and the presence of pentacoordinated centers on the aluminum oxide surface: the higher the pH, the lower the content of pentacoordinated atoms. Additionally, a relationship was observed between the pH value and the size of the coherent scattering region, with an increase in coherent scattering observed at higher pH levels.
Investigating the impact of the porous structure of needle-punched preform-based carbon-carbon composites on the completeness of liquid silicon infiltration
Authors: Petrovskaya K. V. , Timofeev P. A.
Published: December 2024

Currently, siliconized carbon-carbon composites (C/C composites) hold a significant position among materials used in nonferrous metallurgy. The process of Liquid Silicon Infiltration (LSI) for porous C/C composites is strongly inf luenced by their microstructural characteristics. Studying the effect of the porous structure of various C/C composites on the completeness of silicon infiltration can enable the regulation of the phase composition of siliconized materials over a wide range, as well as the physical, mechanical, and thermophysical properties of C/C–SiC composites. This paper presents the results of analyzing the porous structure and strength characteristics of C/C composites based on needle-punched preforms with different types of carbon matrices (pyrocarbon, natural and synthetic pitch coke, and phenol-formaldehyde resin coke) and the C/C–SiC composites derived from them. Due to the specific features of carbon matrix formation from liquid or gas phases, differences in pore size distribution were observed. A carbon matrix formed by the gas-phase method exhibits fewer nanoscale pores compared to one formed by the liquid-phase method. The inf luence of the pore structure and the nature of the matrix carbon in various needle-punched preforms on the degree of saturation during LSI, infiltration depth, and mechanical properties was determined.