bluuebunny/crossref_metadata_2025 huggingface dataset:
Structure and optical characterization of chitosan-chitin/Ag nanocomposite thin films
Authors:   Uzhhorod National University, 46, Pidhirna str., 88000 Uzhhorod, Ukraine, Malakhovska T.O. , Pogodin A.I. ,   Uzhhorod National University, 46, Pidhirna str., 88000 Uzhhorod, Ukraine, Filep M.J. ,   Uzhhorod National University, 46, Pidhirna str., 88000 Uzhhorod, Ukraine,   Ferenc Rakoczi II Transcarpathian Hungarian Institute, Kossuth Sq. 6, 90200 Beregovo, Ukraine, Mariychuk R. ,   University of Presov, Faculty of Humanity and Natural Sciences, Department of Ecology, 17th November 1, 08116 Presov, Slovakia, Pop M.M. ,   Uzhhorod National University, 46, Pidhirna str., 88000 Uzhhorod, Ukraine, Studenyak Ya.I. ,   Uzhhorod National University, 46, Pidhirna str., 88000 Uzhhorod, Ukraine, Vakulchak V.V. ,   Uzhhorod National University, 46, Pidhirna str., 88000 Uzhhorod, Ukraine, Komanicky V. ,   P.J. Šafarik University, Institute of Physics, Faculty of Science, Park Angelinum 9, 04154 Kosice, Slovakia, Vorobiov S. ,   P.J. Šafarik University, Institute of Physics, Faculty of Science, Park Angelinum 9, 04154 Kosice, Slovakia, Sabov M.Yu. ,   Uzhhorod National University, 46, Pidhirna str., 88000 Uzhhorod, Ukraine
Published: March 2024

Chitin and its derivatives are common natural polymers that are widely used in various technological fields. In recent years, considerable attention has been paid to the preparation of polymer nanocomposites based on metal nanoparticles (NPs). Chitin/chitosan-based composites due to high antibacterial activity are suitable for application in related food storage, textile industries. This paper presents an effective and simple method of obtaining chitosan-chitin copolymer/Ag nanocomposites with an extremely high content of metal nanoparticles. The structure and morphology of the synthesized nanocomposites were investigated using X-ray diffractometry, Fourier-transform infrared spectroscopy, electron microscopy, and their optical properties were studied using UV-VIS spectroscopy as well as spectral ellipsometry. It was ascertained that the resulting nanocomposite films are characterized by a uniform distribution of spherical silver nanoparticles, the sizes of which increase (from 55 up to 143 nm) with increasing the Ag+-ions concentration in the reaction mixtures. The optical absorption spectra of nanocomposites are characterized by the presence of an absorption maximum within the range 458…525 nm, which confirms the formation of Ag NPs. A monotonous increase in the values of the energies of optical transitions was observed in the process of increasing the average size of NPs
The conductivity effect of the top coating on optical properties of thin Cu(Ag)-layered structures
Authors:   Taras Shevchenko National University of Kyiv, 60, Volodymyrska str., 01033 Kyiv, Ukraine, Kovanzhi P.O. , Hyrman I.H. ,   Taras Shevchenko National University of Kyiv, 60, Volodymyrska str., 01033 Kyiv, Ukraine, Kravets V.G. ,   Department of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK, Kondratenko O.S. ,   V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 45, prosp. Nauky, 03680 Kyiv, Ukraine, Poperenko L.V. ,   Taras Shevchenko National University of Kyiv, 60, Volodymyrska str., 01033 Kyiv, Ukraine
Published: March 2024

This study examines the optical properties of thin Cu (Ag)-layered structures covered with protective layers based on graphene, titanium (TiO2), or aluminium (Al2O3) oxides. The objective is to investigate the impact of these coatings on the optical behaviors of underlying metallic layers, specifically in the spectral range of excitation of surface plasmon resonances. Combining the methods of spectroreflectometry and spectro-ellipsometry was used to analyze the optical characteristics of the hybrid metal-oxide-graphene films. The study shows that graphene, due to its exceptional electrical conductivity and unique optoelectronic properties, significantly modifies the optical behavior of investigated structures. It includes notable changes in refractive and absorption indices, and optical conductivity indicating potential for enhancing light-matter interactions in plasmonic-graphene layered structures with the aim to apply as biosensor. It is important that addition of TiO2 and Al2O3 layers has also strong effects on the optical properties, which are relevant to their respective applications in the fields of optoelectronics and microelectronics. Employing the effective medium approximation and the Tauc–Lorentz model promotes deeper understanding the interplay between interband and intraband electronic transitions at the nanoscale level. It was revealed that the layer thickness of constituted materials and their individual dielectric functions together with addition of a graphene monolayer commit the significance for altering the optical properties of hybrid layered structures. The obtained results are important for the fields of plasmonics and nanotechnology, providing insights for designing sensors and devices with improved optical characteristics.
New record of monogenean parasite Mymarothecium viatorum (Monogenea; Dactylogyridae) in red-bellied pacu (Piaractus brachypomus) in Indonesia
Authors: Anshary H. , Sriwulan S. , Amriana A.
Published: March 2024

Red-bellied pacu (Piaractus brachypomus) is a popular exotic fish cultured globally for ornamental and human consumption purposes. In Indonesia, this fish is mainly cultured in Java, including to supply seed to other regions for the ornamental fish trade or aquaculture. Although this exotic fish in widely cultured, information on parasitic infections is negligible. Red-bellied pacus were purchased from a fish farmer and examined for monogenean parasite infection. Monogenean parasites were identified based on morphological and molecular characteristics. Histopathological examinations were performed on gills from heavily infected fish. DNA was extracted from an individual monogenean; 18S rRNA PCR product was sequenced and a phylogenetic tree constructed. Morphological and molecular traits identified the monogenean as Mymarothecium viatorum, the first report of the neotropical M. viatorum in this region. The parasite was most likely introduced to Indonesia through the importation of ornamental fish. This parasite had a prevalence of 79% and a mean intensity of 7.1. There was no significant correlation between the parasite abundance and the condition factor of the fish. M. viatorum was more abundant on smaller fish than on larger fish. Gill histopathology showed oedema, severe haemorrhage, and infiltration of inflammatory cells. The occurrence of these parasites could pose a serious threat to the development of red-bellied pacu culture.
Knowing where to start
Authors: Meekings Sam
Published: March 2024

Finding the right way to start a new piece of narrative writing often induces anxiety in writers. This paper will discuss beginnings as a problem for both practitioners and instructors, analysing different practices of how writers select a meaningful point in time at which to start a narrative. It will examine beginning as a theoretical problem and explore the importance of intersectionality when considering how writers and instructors conceptualise beginnings. It will then consider beginning as a pedagogical problem, and how much writing prompts, free and automatic writing exercises, and online writing communities, offer differing responses to this issue. Finally, the paper will discuss different ways that narrative beginnings can be conceptualized and approached.
Formation of a Model of Demographically Sustainable Socio-Economic Development in the Regions of Russia
Authors:   Volzhsky Branch of Volgograd State University, Loginova Elena , Guzev Mikhail ,   Volzhsky Branch of Volgograd State University, Gorshkova Natalya ,   Volgograd State University
Published: March 2024

Demographic problems in Russia and around the world continue to worsen, which necessitates the study and design of a model of demographically sustainable socio-economic development that is exclusive to each country and has a general inclusive trend. The model of demographic indicators of socio-economic development combines signs of not only exclusivity and inclusivity but also universality, that is, compliance of this model with the imperatives and values characteristics of development. Studying the main processes characterizing the demographic situation in the region, describing the degree of achievement of sustainable development goals, and analyzing the dynamics of economic performance and indicators reflecting the human development of the region – these steps formed the logical basis for creating a demographically sustainable model of socio-economic development at the regional level. Data from sociological surveys was used in the study to find out the preferences and attitudes of citizens towards reproductive behavior and migration as factors that have the greatest impact on the population. The definition of a demographically sustainable model of socio-economic development is given based on a synthesis of the theory of human development and the theory of sustainable development. Qualitative criteria for demographically sustainable socio-economic development were determined (expanded social reproduction, qualitative and quantitative reproduction of the population, reduction of inequality and poverty, formation of a healthy lifestyle, accessibility of the entire population to modern Internet technologies), and quantitative indicators have been determined. The analysis of indicators of socio-economic development in Russian regions and the comparison of data from sociological surveys of the population allowed us to conclude that in modern Russia, the model of demographically decaying natural development prevails. Using the example of the Southern Federal District regions, we assessed the compliance of their socio-economic development with the criteria of demographic sustainability. We also identified the factors that ensure the formation of a demographically sustainable model of socio-economic development in modern Russian regions. The article reveals that in exclusive models of sustainable development, the emphasis can be placed on its economic, environmental or social component, depending on the existing institutional conditions, which does not deny the dominant feature of the model: its demographic sustainability. The functioning mechanism of Russia's demographically sustainable development model requires a combination of state regulation, market self-regulation and regulation through the mechanisms of civil society.
The Transformation of Manichaeism in the Middle Ages
Authors:   Vaganova Ballet Academy, Dushin Oleg
Published: March 2024

Firstly, the article discusses the general significance of the phenomenon of "heresy" in the history of European culture. At the same time, it is indicated that in the long term of the social development process, inversions of assessments and understanding of orthodox and non-orthodox views and beliefs occur quite often, when the persecuted become true heroes and their persecutors are declared retrograde. It is also emphasized that the very practice of knowing the truth implies the need for certain experiences that go beyond the scope of traditional intellectual activity, which causes rejection by society. The article notes that heretics were often sacrificed to preserve the social status quo, but, in the end, this led to the exact opposite results. Secondly, the article examines the medieval transformation of the heresy of the Manichaeans, the attitude towards which in modern culture has fundamentally changed, and a wide scientific and philistine interest in the heritage of the Cathars has developed. In this regard, the article studies the problem of the continuity of Manichaeism and Catharism, the relationship between the Cathar doctrine and the principles of Christian religiosity, and demonstrates the special significance and role of the Cathar movement in the development of the social space of cities and the mentality of medieval townspeople. Thirdly, on the example of understanding the world and man, the fundamentally dualistic nature of the worldview of the Cathars or Albigensians is revealed, which led them to the implementation of extreme forms of asceticism up to the practice of self-mortification (endura). Fourthly, as a conclusion, it is indicated that the Cathar movement played a special role in the history of the Middle Ages, demonstrating new social demands of the dynamically developing ethos of the burghers while paying attention to the fact that the experience of traditional monastic ascetics was based not on mortification of the flesh but on the fundamental transformation of whole human nature (theosis).
The Genesis of the Concept of Salvation in the Religious and Philosophical Heritage of Cyril of Turov: Byzantine Influence and Originality of Ideas
Authors:   Peoples' Friendship University of Russia (RUDN University), Volkova Anastasiia
Published: March 2024

The article is devoted to the study of the development of the soteriological concept in the religious and philosophical work of Cyril of Turov. The continuity of the ideas of the Turov author with Byzantine patristic thought is analyzed, and the originality of the views of the Old Russian theologian is also revealed. Cyril of Turov, borrowing a number of Byzantine soteriological ideas, perceives them as already-solved problems that have clear answers and are not intended to continue theological reasoning. In his work, the Old Russian author solves the tasks set in accordance with the realities of his time and the surrounding reality. Thus, the main goal of the bishop of Turov after taking the dignity is to attract the Russian masses to the adoption of baptism and a new faith. Cyril of Turov sees the essence of the spiritual activity of Christian priests and monks in faithful service to ordinary people. In this regard, the idea of individual, personal salvation, presented in the early "monastic" creativity, is transformed into the concept of universal salvation, primarily associated with the dominant nature of God's grace granted to all mankind. The perfection of the incarnation of the Son of God for Cyril of Turov is equal to the perfection of the deification of all mankind. Reverend Cyril does not express to his flock strict requirements regarding morals and moral existence, realizing the weakness of human nature. His soteriological concept is based on the optimistic idea of divine forgiveness and love; therefore, the main principles of Christian virtue leading people to salvation, in accordance with the views of the ancient Russian theologian, are baptism and repentance as opportunities for renewal and the beginning of a new earthly life. Baptism, according to Cyril, regenerates people; repentance gives them the possibility of eternal existence by transforming evil into good.
Efecto de extractos vegetales combinados en plántulas de Nicotiana tabacum L var. "Corojo 2012".
Authors: Valdes Márquez Humberto , Pérez Martín Griseida María , Jo García María , Hernández Gonzalo René , Milián Domínguez Jorge Candelario
Published: March 2024

La investigación se realizó en semilleros tradicionales de tabaco en la finca “La Rosa”, en los meses de febrero – marzo de 2021 con el objetivo de evaluar el efecto bioestimulante de las combinaciones de extractos de S. saman + A. vera + M. oleifera sobre plántulas de N. tabacum var Corojo 2012. Se utilizó un diseño experimental de bloques al azar, con 13 tratamientos y tres réplicas, se evaluaron los indicadores altura de las plantas, número de hojas, entrenudos y nudos, diámetro del tallo, largo de las raíces y volumen radical. El tratamiento T4 presenta los mejores resultados en los indicadores altura de la planta y distancia entrenudos con 12,39 cm y 2,34 cm respectivamente. El mejor comportamiento en el número de hojas lo presenta T6 con 5,4 hojas. En el volumen radical los tratamientos T5 y T9 son superiores al testigo en un 54 % y en la longitud de la raíz los mejores resultados los muestran T10 y T9 con valores de 5,59 y 5,64 cm respectivamente, estos a su vez son superiores al testigo en un 16 %. El empleo de extractos combinados muestra un efecto bioestimulante sobre las diferentes variables evaluadas en plántulas de tabaco variedad “Corojo 2012” en semilleros tradicionales.
Farsça Bir Fusûs Şerhinin Aidiyet Problemi: Muhammed Pârsâ’nın mı, Seyyid Ali Hemedânî’nin mi?
Authors: İbrahimoğlu Abdulmelik
Published: March 2024

Fusûsu’l-hikem, Muhyiddin İbnü’l-Arabî’nin (ö. 638/1240) en önemli ve en meşhur eseridir. Arapça olarak kaleme alınan bu eser, günümüze kadar birçok dile çevrilmiş, ihtisar edilmiş ve başta Arapça olmak üzere Farsça ve Türkçe gibi çok sayıda şerhe konu olmuştur. Fusûs’un Farsça şerhlerinden biri Muhammed Pârsâ’ya (ö. 822/1420) isnat edilmiştir. Gerek kütüphane kataloglarında gerekse bibliyografik kaynaklarda kayıtlı bulunan bu şerh, Pârsâ’ya nisbetle Celîl Misgernijâd (1940-2011) tarafından HŞ 1357/1978 yılında yapılan doktora çalışmasıyla İran’da tahkik edilmiş, neşrinden kısa bir süre önce bir makaleyle ilim dünyasına tanıtılmış ve ardından basılmıştır. Aynı şerh Seyyid Ali Hemedânî’ye (ö. 786/1385) de nisbet edilmiştir. Dolayısıyla araştırmacılar arasında eserin kime ait olduğuna dair tartışma yaşanmıştır. Bu tartışmanın bir tarafında eseri tahkik eden Celîl Misgernijâd, diğer tarafında da aidiyet tartışmasında en ciddi itirazları dile getiren Necîb Mâyil Herevî bulunmaktadır. Buna göre Celîl Misgernijâd şerhin Muhammed Pârsâ’ya, Necîb Mâyil Herevî de Seyyid Ali Hemedânî’ye ait olduğunu ileri sürmektedir. Çalışmada bu aidiyet meselesi çeşitli yönleriyle tartışılarak konuya ışık tutulmaya ve katkı sunulmaya çalışılmıştır. Yani söz konusu şerhin Muhammed Pârsâ’ya ait olduğu kanısında olanların argümanları ile Seyyid Ali Hemedânî’ye ait olduğunu ileri sürenlerin delilleri ortaya konup tartışılmış, değerlendirilmiş ve elde edilen veriler ışığında bir sonuca ulaşılmaya çalışılmıştır. Bu arada Necîb Mâyil Herevî’nin başlangıçta şerhin Muhammed Pârsâ’ya ait olduğu fikrini taşıdığı tesbit edilmiş, Celîl Misgernijâd’ın da Herevî’nin itirazlarına verdiği cevapta yetersiz kaldığı anlaşılmıştır. Yanı sıra her iki araştırmacının da Türkiye’deki nüshaları yeterince incelmediği hatta bazılarından haberdar olmadığı görülmüştür. Ayrıca şerhin birtakım özellikleri kaydedilmiş, Türkiye’deki el yazması nüshalarından söz edilmiş ve tarafımızdan yeni tesbit edilmiş bir el yazması nüsha tanıtılmıştır. Gerek Seyyid Ali Hemedânî’ye gerekse Muhammed Pârsâ’ya nisbetle kayıtlı bulunan el yazması nüshalar matbu ve diğer nüshalarla karılaştırılmıştır.
Methodology for geometry assessment of self-drilling micropiles using distributed fibre optic sensors
Authors: Höttges Alessio , Rabaiotti Carlo , Züger Raphael , Hauswirth Dominik
Published: March 2024

Self-drilling micropiles (SDMs) are gaining popularity as bearing foundation elements, as this construction technique allows for considerable time and cost savings. However, the irregular geometry and variability in the bearing capacity present uncertainty and a significant risk that has limited SDM deployment. To date, no reliable technology has been used to measure the SDM geometry. This paper proposes a methodology that uses distributed fibre optics (DFO), heat conduction modelling and inverse analysis to measure the pile geometry, and could also be extended to assess its bearing capacity. The temperature distribution during cement hydration was measured using two DFO investigative technologies and was compared to traditional temperature measurements using point sensors. An inverse analysis of SDM geometry was subsequently carried out based on the DFO measurement of temperature, a finite-element heat conduction model and a calibration pile. Finally, the calculated pile geometry was compared to the geometry of an excavated pile in the uppermost part. The methodology presented here is not only intended as a tool for designing SDMs but can also be deployed as a structural health monitoring system to detect and monitor crack formation.
Γένοι' οἷος ἐσσὶ μαθών na Pítica 2 de Píndaro: uma proposta de tradução e análise
Authors: Vieira Ricardo Pedroza , Onelley Glória Braga
Published: March 2024

Resumo: No presente artigo, apresenta-se uma proposta de tradução da Pítica 2 de Píndaro, consagrada ao tirano Hierão de Siracusa, vencedor na corrida de carros de cavalos, a mais aristocrática das provas desportivas. Algumas questões constituem objeto de análise: o contexto histórico, o propósito pedagógico da ode, o valor paradigmático dos mitos de Íxion e Radamanto, a noção de kháris e o uso de gnomas, em especial a presente no verso 72:Γένοι' οἷος ἐσσὶ μαθών. A proposta de tradução dessa sentença é um tópico de especial discussão, já que pode ser considerada um ponto de culminância da mensagem ética, religiosa e poética da ode.
Foreign Experience in Major Repairs
Authors: Astafiev Aleksandr
Published: March 2024

Our world has limited resources to sustain a growing population. According to some estimates, humanity currently uses about 1.5 times more renewable sources than the pace of their renewal. Reducing energy use, for example by improving the energy efficiency of an existing building fund, is one of the main environmental goals along with reducing CO2 emissions and increasing the use of renewable energy sources. According to the International Finance Corporation (IFC), the construction of residential buildings with only low energy consumption or high-quality overhaul will reduce the need for heating buildings by 90 %. This will lead to a reduction in fossil fuel imports, increased energy independence of the state, greater sustainability of the economy in case of emergencies and a reduction in CO2 emissions. When writing the article, such empirical research methods as analysis and synthesis, comparison, generalization, etc. were used. Thus, the goals of major repairs are not only to improve the comfort and safety of housing, but also to improve the energy efficiency of buildings. The article considers the experience of major repairs abroad, ways to preserve the old housing stock and improve its energy efficiency.
To the Development of a Complex System of Training Specialists in Foreign Economic Activity
Authors: Tsvigun Irina , Chepinoga Oksana , Melgunova Anastasia
Published: March 2024

The article touches upon the issue of training specialists in foreign economic activity, and contains a number of ideas for updating and improving the system of training economists at universities. The authors highlight the importance and relevance of training well-qualified economists and question the current general approach to economic education in the country; they also describe the national and regional trends in the system of higher education in the recent 10-15 years, and the emanating problems. The article outlines the history and the peculiarities of training specialists in world economy and foreign economic activity by the example of Irkutsk region. The authors rationalize and substantiate the necessity of fundamental changes in the current approach and process of training economists at universities. In conclusion, the authors propose a list of complex measures aimed at improving and developing the relevant programs of higher education, which eventually may provide Irkutsk region and the country as a whole with highly qualified specialists in foreign economic activity.
Physician Workforce in Kansas: Where are the Orthopedic Surgeons?
Authors: Hughes Dorothy , Reese Derek , Templeton Kim
Published: March 2024

Introduction. Rural patients have greater need but less access to orthopedic surgical care than their urban counterparts. Previous studies have investigated rural surgical care, but this is the first to assess the Kansas orthopedic surgery workforce to identify changes over time and rurality and inform thinking about future workforce composition.      
Methods. The authors analyzed 2009 and 2019 AMA MasterFile and Area Health Resource File (AHRF) data. Using frequencies, percentages, and calculations of orthopedic surgeons per capita, we assessed workforce changes by rurality (Rural Urban Continuum Codes).  
Results. The dataset included 307 orthopedic surgeons; 197 were in both 2009 and 2019. Of these, 165 were in active practice in 2009 and 244 in 2019, an increase of 79 (47.9%). Kansas had smaller proportions of surgeons in rural (non-metro) versus urban (metro) counties in both years. Orthopedic surgeons per capita grew throughout the state, but the increase was smaller in rural counties. There were 11 women orthopedic surgeons in both years, 3.6% of the total 307. Among the 197 surgeons in both years, four (2.0%) were women. No women orthopedic surgeons were in non-metro counties either year.  
Conclusions. Although the Kansas orthopedic surgery workforce grew from 2009 to 2019, rural Kansas remains a surgery desert based on orthopedic surgeons per capita. Further studies could determine whether this trend is similar to that in other rural states and how to attract orthopedic surgeons to rural practice.
Investigation on the electrical discharge machining of cryogenic treated beryllium copper (BeCu) alloys
Authors:   Symbiosis Institute of Technology, Maharashtra, India, Sawant Dhruv , Bulakh Rujuta ,   Symbiosis Institute of Technology, Maharashtra, India, Jatti Vijaykumar ,   Symbiosis Institute of Technology, Maharashtra, India, Chinchanikar Satish ,   Vishwakarma Institute of Information Technology, Maharashtra, India, Mishra Akshansh ,   School of Industrial and Information Engineering, Politecnico Di Milano, Italy, Sefene Eyob Messele ,   National Taiwan University of Science and Technology, Taipei,   Bahir Dar Institute of Technology, Ethiopia
Published: March 2024

Introduction. In modern manufacturing world, industries should adapt technological advancements for precision machining of difficult-to-machine metals, especially for beryllium copper (BeCu) alloys. The electrical discharge machining of alloys has proven its viability. The purpose of the work. A literature review indicated that the investigation of electrical discharge machining of BeCu alloys is still in its infancy. Furthermore, the cryogenic treatment of workpieces and electrodes in electrical discharge machining has not received much attention from researchers. Moreover, the impact of magnetic field strength on surface integrity and productivity during electrical discharge machining has not attracted much attention from researchers. The methods of investigation. This paper describes the use of electrolytic copper with different gap current values, pulse on periods, and external magnetic strength for electrical discharge machining of BeCu alloys. This paper examines how the material removal rate, the thickness of the white layer, and the formation of surface cracks are affected by cryogenic treatment of the workpiece and tool, pulse-on time, gap current, and magnetic strength. Results and Discussion. The combination of the cryogenically treated BeCu workpiece and the untreated Cu electrode had the highest material removal rate among all the combinations of workpieces and tools used in this study. The pulse on-time and the strength of the magnetic field had little influence on material removal rate, whereas the gap current had the greatest effect. The maximum achieved material removal rate was 11.807 mm3/min. At a high material removal rate, the observed thickness of the white layer on the horizontal surface ranged from 12.92 µm to 14.24 µm. In the same way, the maximum and minimum values for the vertical surface were determined to be 15.58 µm and 11.67 µm, respectively. According to scanning electron microscopy, the layer thickness was less than 20 µm, and barely noticeable surface cracks were observed in specimens with low, medium and high material removal rates. Obviously, due to the cryogenic processing of the workpiece and the external magnetic strength, there was a slight cracking of the surface and the formation of a white layer.
Features of calculating the cutting temperature during high-speed milling of aluminum alloys without the use of cutting fluid
Authors:   Omsk State Technical University, Russian Federation, Gubin Dmitry , Kisel' Anton ,   Kaliningrad State Technical University, Russian Federation
Published: March 2024

Introduction. The calculation of temperature during high-speed milling of aluminum alloys is of interest, since temperature can act as one of the main limiting factors in choosing rational milling modes. This is especially important when milling thin-walled products used in aircraft construction, since its high values can lead to local warping of the structure. It is not possible to control the temperature factor in production conditions, which makes it necessary to develop a mathematical model for calculating temperature. The purpose of the work is to develop a methodology for predicting the cutting temperature during high-speed milling of aluminum alloy workpieces for cutting conditions, in which it is not possible to use cutting fluid. Methods. This paper presents experimental studies of the cutting temperature during high-speed milling of aluminum alloy workpieces without the use of cutting fluid using non-contact temperature measurement methods. The results obtained were used to determine the coefficients substituted into formulas for calculating temperatures on the front and back surfaces of the cutting blade. Results and discussions. Based on the results of experimental tests and theoretical modeling, a temperature graph is drawn up. A comparison of experimental studies of milling of aluminum alloy D16T, with changing cutting conditions (the cutting speed changed) with theoretical data, gave a satisfactory result. The average relative error when comparing experimental data with theoretical one is 6.05 %. Based on experimental data, it can be concluded that the comparison of experimental data for measuring cutting temperatures is in satisfactory agreement with the proposed method of theoretical calculation of temperatures. The advantage of this technique is that it allows, without time-consuming and costly experimental studies, theoretically calculate (forecast) the temperatures on the front and back surfaces of the cutting blade, as well as the cutting temperature, for those narrow milling conditions, where effective heat removal from the cutting zone is impossible. It can also be used for milling aluminum alloys, the mechanical and thermophysical properties of which differ.
Diseño de un modelo de educación ambiental basado en la complejidad
Authors: Solarte-Echeverri María Claudia , Zúñiga-Escobar Orlando , Osorio-Marulanda Carlos Augusto
Published: March 2024

Este artículo presenta una reflexión sobre los procesos de formación más comunes de la educación ambiental en la educación superior, con el propósito de proponer un modelo basado en el paradigma de la complejidad, el cual pueda contribuir a superar las prácticas tradicionales y reduccionistas que están incidiendo en la formación de los maestros. Tales prácticas no contribuyen con una comprensión del ambiente de una forma integral, es decir, de manera que tengan en cuenta el dialogo de saberes, la interdisciplinariedad, las cosmovisiones de las comunidades, los asuntos socioculturales, las relaciones sistémicas, así como la construcción de conocimientos científicos. La propuesta presentada se fundamenta en un análisis del estado del arte de publicaciones recientes relacionadas con la educación ambiental y la teoría de la complejidad. Como resultado, se propone un modelo de educación ambiental para la formación de maestros basado en tres principios: la no linealidad, la complementariedad y el principio de incertidumbre. Mediante esta propuesta, se espera aportar a la formación docente que se implementa a través de la educación superior, como parte de la investigación de una tesis doctoral realizada en el Doctorado Interinstitucional de Ciencias Ambientales de la Universidad del Valle.
Enseñanza de las ciencias naturales en la educación primaria de jóvenes y adultos: hegemonías y resistencias
Authors: Ithuralde Raúl Esteban , Moccagatta María Eugenia , Dumrauf Ana Gabriela
Published: March 2024

En este artículo de investigación exploramos las prácticas de enseñanza de Ciencias Naturales que se desarrollan en la educación primaria de jóvenes y adultos de la provincia de Santiago del Estero, Argentina. Para ello, realizamos observaciones de clases y entrevistas al personal docente y directivo de instituciones de la modalidad y un taller de retroalimentación con personal de una de las escuelas participantes del estudio. Encontramos diferentes tensiones entre documentos curriculares, prácticas docentes y necesidades de formación docente continua no satisfechas. Reconocimos la existencia de prácticas hegemónicas descontextualizadas, que presentan una imagen inductivista de la ciencia, alejada de los territorios donde se enclavan los centros educativos. Identificamos también prácticas docentes con direccionalidad problematizadora de situaciones de injusticia, que promueven diálogos de saberes y vivires. Sin embargo, al no existir espacios institucionales para el intercambio y la reflexión entre docentes, estas prácticas no se sistematizan ni se difunden hacia el conjunto, lo cual les resta potencialidad transformadora.
Football and Discrimination – A Case Study from Bulgaria
Authors: Kyurkchieva Iva
Published: March 2024

This study aims to acquaint the academic community with the complex amalgam of relationships that arose from the case of a football player from Nigeria, who competed for a Bulgarian provincial team. He was attacked and severely beaten by a group of skinheads in the centre of Sofia in 2007. These events provoked interactions between the official state authorities, the non-government sector, and various representatives of Bulgarian society. This situation creates conditions for posing contentious questions to society and provides an opportunity for some solutions. The study of the degree of sensitivity and commitment of the mentioned actors can help to understand the issues related to discrimination in Bulgarian society. My research is primarily based on in-depth interviews. I have also used various written data from the official websites of state and non-governmental institutions and media publications to apply the comparative anthropological approach.
Sport and Nationalism in Celebrations of Mega Events. Dancing victory with Zorba the Greek
Authors: Pateraki Mimina
Published: March 2024

The present paper explores the negotiation of national identity in contemporary mega sporting events. The study focuses on certain performances of Greekness through Zorba’s dance in national sporting victories, especially in basketball. The attention shifts onto wider nationalisation processes by highlighting the socio-political relations of sport. The fieldwork took place in the broader area of Athens (Attica) and Patras (Peloponnese), between September 2020 and September 2022. It was based on Visual Anthropology methods, working with interlocutors who are engaged with sports in various ways. Through endearing habits, athletes and fans can constitute different embodied performances inside and outside the stadiums, where sport as a performative place of collectivity and solidarity invites a continuous embodied creative action highlighting how complex, versatile, and political it can be.
Sport as a Medium for Multidimensional Social Inclusion: The Role of Rugby in the (Re-)construction of the Identity of New Zealanders of Croatian Origin
Authors: Hrstić Ivan , Mustapić Marko
Published: March 2024

There are two general approaches to the role of sport in the development of minority ethnic communities. One focuses on the process of assimilation, while the other focuses on maintaining ethnic identity. This paper uses the example of Croats in New Zealand and their descendants to analyse the role of rugby in terms of both approaches. According to the main thesis, rugby played an important role in the process of integrating many members of the Croatian diaspora into New Zealand society, while simultaneously preserving identity elements of their country of origin and finally renewing their ties to Croatia after decades of being relatively poorly connected.
Contemporary Challenges for Women in Football. The Bulgarian Case
Authors: Angelova-Igova Boryana , Naydenova Korneliya
Published: March 2024

This article aims to demonstrate the main problems that female football players in Bulgaria (we can say in most European countries) face in terms of employment, remuneration, media coverage and health support. With the help of a survey and in-depth interviews conducted with female football players, coaches and managers of women‘s and girl‘s teams, it was concluded that women in football (in Bulgaria, but elsewhere as well) often work without employment contracts, sponsorships are almost completely absent, no one interested in their media promotion, and motherhood and child-rearing is a private issue, with their clubs making no commitment to them after leaving the club, whether as a result of illness, injury, pregnancy, etc. Overcoming these issues is key to empowering women in sport and is a step towards gender equality.
The projected health and economic impact of increased colorectal cancer screening participation among Canadians by income quintile
Authors: Adegbulugbe Abisola A. , Farah Eliya , Ruan Yibing , Yong Jean H. E. , Cheung Winson Y. , Brenner Darren R.
Published: March 2024

Objectives

Disparities in colorectal cancer (CRC) screening uptake by socioeconomic status have been observed in Canada. We used the OncoSim-Colorectal model to evaluate the health and economic outcomes associated with increasing the participation rates of CRC screening programs to 60% among Canadians in different income quintiles.

Methods

Baseline CRC screening participation rates were obtained from the 2017 Canadian Community Health Survey. The survey participants were categorized into income quintiles using their reported household income and 2016 Canadian Census income quintile thresholds. Within each quintile, the participation rate was the proportion of respondents aged 50–74 who reported having had a fecal test in the past two years. Using the OncoSim-Colorectal model, we simulated an increase in CRC screening uptake to 60% across income quintiles to assess the effects on CRC incidence, mortality, and associated economic costs from 2024 to 2073.

Results

Increasing CRC screening participation rates to 60% across all income quintiles would prevent 69,100 CRC cases and 36,600 CRC deaths over 50 years. The improvement of clinical outcomes would also translate to increased person-years and health-adjusted person-years. The largest impact was observed in the lowest income group, with 22,200 cases and 11,700 deaths prevented over 50 years. Increased participation could lead to higher screening costs ($121 million CAD more per year) and lower treatments costs ($95 million CAD less per year), averaged over the period 2024–2073.

Conclusion

Increased screening participation will improve clinical outcomes across all income groups while alleviating associated treatment costs. The benefits of increased participation will be strongest among the lowest income quintile.
SAINT RIGHTEOUS PETRO KALNYSHEVSKY
Authors:   National Historical and Ethnographic Reserve «Pereiaslav»  Pereiaslav, Ukraine, Lukashevych Oleksiy , Kotsur Vita
Published: March 2024

The article was devoted to righteous Petro Kalnyshevsky, son of Ukraine, the last Koshoviy Otaman of Zaporozhian Host. Highlighted on role of orthodox, which always inspired cossacks for freedom struggles – inestimable God’s gift for everyone and for each nation. Stressed that the sacral foundation of all cossacks deeds was Orthodox and Church, which was protected by cossacks from oppressions. It is a matter of including the Kish otaman Petro Kalnyshevsky into the ranks of Ukrainian saints, blessing him with the righteousness to paint an icon for worship and build churches in his honor. To date, churches in honor of Petro Kalnyshevsky have been built in Nedryhailiv, Bila Tserkva, Nikopol', Kholodnyi Yar, etc. The Monastery of the Righteous Petro Kalnyshevsky was founded in the village of Kostyantynov, Romen district. The article reveals the charitable activities of the Kotsur family in the production of icons of St. Petro Kalnyshevsky. Their consecration and stay in the combat zone to repel the armed aggression of russia are also covered. The donation of the icon to the church of Petro Kalnyshevsky in Nedryhailiv, Sumy Oblast, is also reflected.
DİRSE HAN OĞLU BOĞAÇ HAN HİKÂYESİNİ SEMBOLİK YAKLAŞIMLA OKUMA
Authors: Topcu Mümin
Published: March 2024

Dede korkut hikâyeleri Türk destan geleneğinin önemli bir parçasıdır. Bu hikâyeler, Türk toplumunun ortak bilinçaltı birikimini yansıtır. Hikâyelerin sembollerini ve olay akışını doğru anlamak, beraberinde Türk devlet ve toplum ilişkileriyle yaşayış biçimlerini de anlamayı sağlayacaktır. Kültürel bir yaşam birikimi yansıtan Oğuz namelerin, sembolik derin anlamına dikkat edildiğinde dini-tasavvufi kültürel ve mitolojik açılardan siyasetname özellikleriyle ön plana çıktığı düşüncesindeyiz. Astral simgeler olan güneş, ay ve yıldızlar ile zoolojik simgeler olan aslan, boğa, deve ve diğer hayvanlar ile baba, anne ve çocuklardan oluşan aile ilişkileri; yöneten-yönetilen ilişki ve işleyişleriyle arasında benzerlikler kurulur. Aile, soy, maddi-manevi insan yaşamı, astral, zoolojik, iktidar ve devlet döngüsü arasında benzerlikler kurularak destanın oluşturulduğu düşüncesindeyiz. Boğaç Han destanında bu döngü simgelerini birbiriyle bağdaştırıp çözümleyerek, Türk devlet geleneği ve derin yapı işleyişinin anlaşılabileceği düşüncesindeyiz. Bu nedenle Dede Korkut hikâyelerini anlamak, bizim için eğitici ve öğretici olacaktır.
Interpretación judicial de las leyes de acción positiva en los casos de violencia de género
Authors: Ochoa Díaz Angélica , Chacín Fuenmayor Ronald
Published: March 2024

El artículo tiene como propósito analizar el razonamiento judicial frente a las leyes de acción positiva en lo que r­especta a la función del juez como aplicador del derecho, quien tiene un margen de discrecionalidad como todo intérprete judicial, además de razones morales referidas a su libertad de conciencia y la posibilidad de efectuar estas facultades frente a las leyes de acción positiva, concretamente las que protegen a las mujeres frente a la violencia de género como prima facie vinculantes, por estar relacionadas con la protección de los derechos de las minorías, consagrados constitucionalmente. La metodología consiste en el estudio de diferentes documentos escritos, tales como libros, artículos de revistas, documentos científicos, legislación, jurisprudencia, entre otros. La originalidad y aporte se centró en expresar la problemática sobre la limitación o no del razonamiento judicial frente a las leyes de acción positiva. Par el logro del objetivo se plantearon estos aspectos: nociones sobre la violencia de género, la interpretación jurídica en general y, por último, análisis de las leyes de acción positiva y su interpretación. A manera de conclusión es importante resaltar que, el ciudadano y los organismos del estado están sometidos a la carta magna y al ordenamiento jurídico por lo que no es posible el derecho de objeción de conciencia y el margen de discrecionalidad que tiene el juez como todo intérprete judicial en los casos de violencia de género, aunque esto contravenga a la concepción moderna del derecho en cuanto a la jurisprudencia como fuente creadora de derecho.
Tuning Microstructure and Phase Composition in Porous Ceramic Materials: Implications for Gas Separation Performance
Authors: Bhuiyan Md. Tariqul Islam , Surarapu Pavani , Goda Dileep Reddy
Published: March 2024

This study looks into how gas separation performance is affected by adjusting porous ceramic materials' microstructure and phase composition. The main goals are to investigate microstructural engineering approaches, examine the consequences of phase composition, use sophisticated characterization tools, spot new trends, and evaluate policy implications. Methodologically, secondary data from various experimental and computational research studies are collected and analyzed from existing literature. Important discoveries demonstrate how precisely regulating phase compositions and microstructural characteristics affects gas adsorption, diffusion, and selectivity properties. Even if new technologies present hopeful solutions, issues still need to be resolved, including access hurdles, regulatory frameworks, economic factors, and environmental concerns. The policy implications indicate that measures for technological transfer, international collaboration, and sustainable manufacturing practices are required to utilize porous ceramic materials in gas separation technologies fully. This study emphasizes how crucial it is to work across disciplines to advance policies strategically and move the field closer to a cleaner, more sustainable future.
Tensiones en la integración social a partir del acceso a salud y trabajo decente de la población migrante en Santiago de Cali
Authors: Castillo-Castillo María Liliana , Oliveros Ortiz Stephanie , Fernández Mejía Diana
Published: March 2024

Cali, Colombia has been a destination for migrants from Venezuela, either to serve as a transit point or a settlement for those seeking better opportunities. This complex situation, within the context of an intermediate city located in the Global South, has led to unprecedented institutional challenges related to the assurance of Economic, Social, and Cultural Rights (ESCR), and even more, requirements for social coexistence. This paper aims to elucidate tensions that have arisen in the social integration of the migrant population in Cali, Colombia, based on the analysis of their access to health and work rights. The primary reference for this exploration is drawn from oral accounts provided by Venezuelan migrant participants residing in the city.
Tekinsiz Vadi Teorisi Bağlamında Yapay Zeka Etkileyicileri
Authors: Doğan Erdinç Ece , Uzunçarşılı Soydaş Ayda
Published: March 2024

Pazarlama amaçlarını gerçekleştirmek isteyen markaların, günümüzde yapay zeka ve bilgisayar destekli görüntü oluşturma (Computer Generated Imagery – CGI) teknolojileri aracılığı tasarlanan yapay zeka etkileyicileri (YPE) ile iş birliği içerisine girdikleri görülmektedir. Farklı alanlarda hizmet veren, insana benzerlikleri yüksek olan diğer robotlar gibi sosyal medya platformlarında gerçek bir insanmış gibi davranan YPE’ler de kullanıcılar tarafından itici, korkunç veya tehlikeli olarak algılanabilmektedir. Bu doğrultuda çalışma kapsamında; kendisini Türkiye’nin ilk dijital insanı olarak tanımlayan Alara X kullanıcı isimli YPE’nin, Instagram profilindeki gönderileri ve takipçilerinin gönderilerine yaptıkları yorumlar Mori (1970) tarafından geliştirilen Tekinsiz Vadi teorisi kapsamında içerik analizi yöntemi ile incelenmiştir. Araştırma sonucunda Alara X’in takipçileri tarafından sevilen, arkadaşlık kurulmak istenen dijital bir karakter olarak görüldüğü sonucuna ulaşılmasının yanı sıra çeşitli markalar ile iş birlikleri yapan bir sosyal aktör olduğu saptanmıştır. Bu doğrultuda çalışmada antropomorfizm seviyeleri yüksek olan cansız nesnelerden biri olarak Alara X’in Tekinsiz Vadi teorisinin sınırlarını aşarak bireyler tarafından kabul gördüğü sonucuna ulaşılmıştır.