bluuebunny/crossref_metadata_2025 huggingface dataset:
Structure and mechanical properties anisotropy of a steel product manufactured by layer-by-layer electric arc wire 3D printing
Authors: Vlasov I. V. , Gordienko A. I. , Kuznetsova A. E. , Semenchuk V. M.
Published: December 2023

The work presents the study of structure and mechanical properties anisotropy of a metal wall obtained using electric arc wire 3D printing (WAAM) with ER70S-6 wire. The layers were deposited in the protective gases of carbon dioxide and argon. As a result of structural studies, it was found that the internal structure of the model product in form of a wall can be divided into three zones. Repeated heating, cooling cycles and degree of accumulated heat influence the formation of different wall zones. As a result of rapid heat removal to the substrate during deposition of the first layers, the wall base (zone 1) contains large elongated grains with acicular ferrite structure. The wall middle part (zone 2) consists of ferrite-pearlite structure, which was formed as a result of recrystallization under conditions of repeated heating and cooling during 3D printing. The size of ferrite grains in zone 2 varies from 11 to 16.3 µm with increasing the number of layers. The gradual accumulation of heat during 3D printing led to the formation of structures in zone 3 under conditions of overheating and a reduced cooling rate. As a result, the wall upper part (zone 3) consists of large ferrite grains (up to 29.8 μm), sorbite, and a small proportion of Widemanstatten ferrite and acicular ferrite. It is shown that the most uniform level of mechanical characteristics (σ0.2 = 340 MPa, σu = 470 MPa, ε = 28 %) correspond to the samples cut from zone 2 in a direction parallel to 3D prin­ting direction. The samples cut in the vertical direction relative to 3D printing and from zone 3 show the lowest level of microhardness and mechanical characteristics (σ0.2 = 260 MPa, σu = 425 MPa, ε = 20 %).
Influence of basicity on physical properties of slags of the СаО – SiO2 – 18 % Cr2O3 – 6 % B2O3 – 3 % Аl2O3 – 8 % МgO system
Authors: Babenko A. A. , Shartdinov R. R. , Upolovnikova A. G. , Smetannikov A. N. , Lobanov D. A. , Dolmatov A. V.
Published: December 2023

Influence of basicity on viscosity, crystallization onset temperature, phase composition, and structure of slags of the СаО – SiO2 – 18 % Cr2O3 – 6 % B2O3 – 3 % Аl2O3 – 8 % МgO system in the basicity range (B = CaO/SiO2 ) from 1.0 up to 2.5 was studied using vibrational viscometry, thermodynamic modeling, and Raman spectroscopy. It was established that the physical properties of slags depend on the balance of polymerization degree and phase composition. Acid slags with a basicity of 1.0 belong to the category of “long” slags and are characterized by an increased proportion of high-temperature phases up to 34.1 %. However, despite the fact that the proportion of high-temperature phases is 1.6 times higher compared to the proportion of low-temperature ones, they are characterized by a simpler silicate structure, providing a viscosity of no more than 0.25 Pa·s at a crystallization onset temperature of 1530 °C. An increase in basicity of slags of the studied oxide system (up to 2.5), along with an increase in the proportion of high-temperature phases (by almost 5.9 times), is accompanied by formation of a more complex silicate structure. The resulting four-coordination structural elements [CrO4] and [AlO4] are embedded in the silicate structure and complicate it, which increases the polymerization degree. Thus, at basicity of 2.5, due to a high proportion of high-temperature phases in the slag and development of polymerization process, slag crystallization onset temperature increases to 1700 °C and its viscosity reaches 1.0 Pa·s at a temperature of 1670 °C.
Production of refining alumina-containing fluxes by sintering from technogenic raw materials
Authors: Aksenova V. V. , Pavlov A. V. , Markov G. M.
Published: December 2023

Modern Russian steelmaking plants use predominantly alumina-containing materials for liquefying lime in a ladle-furnace unit, which replaced fluorspar. Alumina-containing materials currently available on the market cannot be used directly in steelmaking without preliminary preparation (refining, heat treatment or briquetting), or are simply unsuitable for ladle processing of steel. This work describes laboratory studies on the production of refining alumina-containing fluxes by sintering in units such as machines for pellets firing or producing agglomerate (in the temperature range of 1200 – 1500 °C) from clean metallurgical waste (fine dust from the production of alumina and burnt lime), meeting the requirements of steelmaking plants by chemical composition and mechanical properties. A comparison was made of sintering technological schemes with the introduction of hydra­ted lime and a mixture of hydrated lime and calcium carbonate in a 1:1 ratio as a source of CaO. We determined that the maximum permissible CaO content in sintered briquettes when using a mixture of hydrated lime and calcium carbonate in the charge, which does not lead to hydration destruction in air, is in the range of 2.3 - 3.6 %, depending on the holding temperature. The maximum permissible content of Al2O3 in sintered briquettes when using hydrated lime in the charge, which does not lead to hydration destruction in air, is in the range of 9.5 – 31.7 %, depending on the holding temperature. In existing fuel units it is possible to obtain fluxes by sintering only when using hydrated lime as a source of CaO, because adding calcium carbonate to the charge (9 – 22 %) requires an increase in holding temperature (above 1500 °C) or holding time (more than 25 min).
Modeling the pattern of metal flow during forming of forgings from a flat billet
Authors: Solomonov K. N. , Tishchuk L. I. , Gorbatyuk S. M. , Snitko S. A. , Chicheneva O. N.
Published: December 2023

Parts made of the billets with a thin web and stiffeners are manufactured at metallurgical enterprises in special workshops equipped with powerful hydraulic presses. Often their production is accompanied by the defects that worsen the product macrostructure. In this regard, new techniques are relevant that allow modeling the processes of forming of forgings with stiffeners. The processes of metal processing by pressure are difficult to create a mathematical model describing the stress-strain state of plastic forming of metal. One of the ways to solve the problem of modeling the pattern of metal flow and the spatial diagram of contact pressures is the “theory of thin layer flow”, based on assumptions that simplify the initial system of differential equations. Then the problem is reduced to a purely geometric one and can be solved within the framework of the “sandy analogy” using the proposed methodology. The paper presents the results of computer and physical modeling of the forming of stamped forgings with contour stiffeners. The experiment was carried out in industrial conditions on the precipitation of flat billets made of AK6 alloy on a hydraulic press with a deformation force of 150 MN. It is shown that the proposed software package can have a different functional purpose: express analysis of the pattern of metal flow and calculation of the shape of the billet at the stages of its deformation. This allows, by sorting through values of the geometric parameters of the stamp engraving, to obtain different patterns of metal flow and profiles of stiffeners and choose from them those that guarantee the most uniform filling of the stamp cavities with metal under the stiffeners, which ensures defect-free production of the product.
Application of methods investigation of materials and structures of electronics in development of medical titanium endoprostheses with increased fibrointegration efficiency
Authors: Shaikhaliev A. I. , Polisan A. A. , Ivanov S. Yu. , Kiselev D. A. , Parkhomenko Yu. N. , Malinkovich M. D. , Cherkesov I. V. , Temirov A. A. , Molchanov S. A.
Published: December 2023

Titanium alloys approved for clinical use in our country are widely used in traumatology, maxillofacial surgery and stomatology, mainly for the manufacture of various endoprostheses and dental implants, i.e. structures, introduced and installed in the bone and soft tissues of human body, able to both bio-integrate and bio-adaptable in the tissues of human body. In the field of medical materials science and in particular in the development of medical products based on titanium and its alloys and various coatings on the surface of such products, modern methods and modern equipment developed for the electronics industry are successfully used.In this paper, the methods of research of materials and structures of electronics used in the field of medical technology and specifically in the development of medical titanium endoprostheses have made it possible to develop the basics of the technology for obtaining optimal microrelief on the surface of titanium endoprostheses intended for engraftment in soft tissues (i.e. fibrointegrable) with bioactive coating of titanium dioxide TiO2 with an anatase structure obtained by atomic-layer deposition. The research aimed at revealing the optimal surface treatment of such endoprostheses in order to achieve improved fibrointegration properties in their use in maxillofacial surgery has been carried out.It has been shown that high adhesion and fibrointegration between the titanium endoprosthesis and connective tissue are achieved with an average surface roughness (4—8)⋅102 nm, root-mean-square roughness 5⋅102—1⋅103 nm, profile height (3—6)⋅103 nm, and thickness bioactive coating in the order of 10 nm.
Multiscale modeling of clusters of point defects in semiconductor structures
Authors: Abgarian K. K. , Mutigullin I. V. , Uvarov S. I. , Uvarova O. V.
Published: December 2023

Clusters of point and extended defects, arising in semiconductors as a result of radiation exposure, allow structures to acquire various properties that can be used in the manufacture of new generation devices for nanoelectronics. Numerical simulation of semiconductor materials used to research such processes is a resource-intensive and multifaceted task. To solve it, the multiscale modeling complex was created and the multiscale composition containing instances of basic composition models was set. An algorithm was developed that allows speeding up calculations for systems of large dimensions and accounting for a large number of interacting atoms. The structure of silicon with a complex of point defects was considered as a model. Molecular dynamics simulation was performed using the multiparameter potential of Tersoff. For the calculations, an effective approach to the implementation of parallel computing was presented, and software for parallelizing the computations was used, placed on the hybrid high-performance computing complex of the FRC «Computer Science and Control» of Russian Academy of Science. To implement the parallelized algorithm, the OpenMP standard was used. This approach has significantly reduced the computational complexity of the calculations.

It was shown that the developed high-performance software can significantly accelerate molecular dynamics calculations, such as the calculation of divacancy communication energy, due to the parallelization algorithm.
Identificação e classificação dos serviços de ecossistemano território doArouca Geopark: o exemplo da Serra da Freita
Authors:   Universidade de Coimbra, Fernandes da Costa Soraia , Cunha Lúcio ,   Universidade de Coimbra, Santos Norberto ,   Universidade de Coimbra
Published: December 2023

Objetivo da Investigação: O objetivo principal é identificar e classificar os Serviços de Ecossistema (SE)oferecidos nos principais geossítios e atrativos geoturísticos da Serra da Freita, localizada no território do Arouca Geopark. Como objetivos secundários, a investigação visa destacar, principalmente, a relação e interligação entre os SE dos elementos da geodiversidade (abióticos) e os elementos da biodiversidade (bióticos) presentes nos sítios avaliados.Metodologia: A área de estudo centra-se na Serra da Freita, parte de grande relevância ambiental no Arouca Geopark. Recorreu-se à classificação CICES (Common International Classification of Ecosystem Services), que categoriza os SE em SE de provisão(SEP), SE de regulação(SER)e SE culturais(SEC). Para cada geossítio ou atrativo avaliado em campo foram identificados os potenciais SE, bem como a infraestrutura de apoio ao visitante.Resultados: Os SECforam os mais presentes. Os geossítios da Frecha da Mizarela, Marmitas de Gigante do Caima e Praia Fluvial de Albergaria da Serra foram os locais com maior oferta de SE, nos quais foram identificados, tanto na componente biótica (biodiversidade) quanto naabiótica (geodiversidade), SEC(beleza cénica, lazer e recreação), SEP(fornecimento de água, alimento e energia eólica) e SER(controlo de erosão, qualidade do ar e da água). O complexo das Pedras Parideiras, um fenómeno geológico raro no mundo, é responsável pelo maior número de visitas na Serra da Freita, sendo classificado como um SECeducativo.Originalidade/Valor: A discussao sobre os SE em territórios de geoparques, principalmente associando as componentes bióticas e abióticas, ainda carecem de atençao por parte da comunidade acadêmica. Espera-se que este estudo promova a divulgação dos SE oferecidos nos territórios dos geoparques, visando uma maior valorização, reconhecimento e proteção destas áreas, reforçando o papel destes territórios na manutenção da geodiversidade e da biodiversidade, bem como na promoção da saúde e do bem-estar humano.
Impacts de défrichement sur la dégradation des sols dans le moyen atlas central, cas de la dépression d’Ain Nokra
Authors:   Sultan Moulay slimane university, EL HAIRCHI Khalid , LIMAME Abdelhak ,   Sidi Mohamed Ben abdellah University, BENBRAHIM Youssef ,   Sidi Mohamed Ben abdellah University, EL OMMAL Mohcine ,   Sidi Mohamed Ben abdellah University
Published: December 2023

Objectif de recherche:L’objectif de cet article consiste à évaluer et quantifier les impacts de défrichement sur les sols: La perte de fertilité des sols défrichés a été évaluée à l'aide d'analyses physico-chimiques des sols sous forêt (Chêne vert), et dans des terrains de parcours et les parcelles défrichées Transformées en terres arables depuis longtemps (+10 ans).Méthodologie:La simulation de pluies (avec simulateur simple) a été utilisée pour évaluer les impacts du défrichement et de la mise en culture sur le comportement hydrodynamique du sol. Résultats: Les résultats obtenus montent que la dégradation des forêts, a des conséquences négatives sur le milieu naturel. Premièrement le sol devient instable sous les effets du piétinement du cheptel et les labours successifs. Deuxièmementil y a réduction des réserves du sol, à savoir la matière organique qui baisse de 33,61% de sa teneur initiale, l’augmentation du taux l’azote minéral est passé de 1,61 à 7,73 mg/100g. Troisièmement, les pertes en sols par l'érosion hydrique ont atteint 0,85 t/ha pourune séquence de précipitation de 80 mm h-1 pendant 45 minutes. Les résultats expérimentaux de cette analyse au niveau de la dépression Ain Nokra montrent le rôle non négligeable des écosystèmes forestiers bien conservés dans la protection du sol contre l'érosion hydrique, et dans la conservation des ressources en eau.Originalité/Valeur : Cette étude représente la première simulation de l'érosion au niveau d'Ain Nokra (Moyen Atlas). Sur le plan scientifique, cet article aborde le rôle de la végétation dans la préservation des sols contre l'érosion, ainsi que son impact dans l'enrichissementdu sol en matières organiques
Prevalence of Major Parasitic Agents Involved in Camel Skin Diseases in Babile District, Eastern Ethiopia
Authors:   Department of Animal Science, College of Agriculture and Natural Resource, Werabe University, P. O. Box 46, Ethiopia, Bassa Tesfalegn , Gensa Ufaysa ,   Department of Animal Science, College of Agriculture and Natural Resource, Werabe University, P. O. Box 46, Ethiopia
Published: December 2023

Aim A cross-sectional study was conducted from October 2017 up to April 2018 in Babile district, Eastern Hararghe zone, Oromiya regional state of Ethiopia. Objective To determine the prevalence of major parasitic agents involved in camel skin diseases and their risk factors. Method A cross-sectional study design was implemented to determine the prevalence of major parasitic pathogens, particularly mange mites and ticks affecting camel skin, and associated risk factors. The target animals for the study were dromedary camels reared under pastoral and agro-pastoral production systems in Babile district of Oromia Regional State of Ethiopia. The sample size for the study was estimated by taking an expected prevalence of 50%, an accepted error of 5%, and a confidence level of 95%. A chi-square test was used to evaluate the differences in the occurrence of parasites among categorical variables (age, sex, herd size, and season). A p-value≤0.05 was considered statistically significant. Results Out of 768 camels examined, 122 (15.9%) and 113 (14.7%) were found to be infested with ticks of various species and Sarcoptes species, respectively. Nine hundred twenty-nine (929) adult tick species, including 329 (35.4%) males and 600 (64.59%) females, were collected from selected camels. The tick species identified in the present study were Rhipicephalus pulchellus (29.7%), Amblyomma gemma (4.84%), Hyalomma dromedarii (13.56%), Boophilus decoloratus (2.58%), Amblyomma variegatum (23.04%), Amblyomma coherence (8.61%), Rhipicephalus evertsievertsi (9.15%), Rhipicephalus pravus (2.37%), Rhipicephalus sanguines (4.2%), Rhipicephalus appendiculatus (1.08%) and Hyalomma marginatum (0.86%). The mean tick burden observed was 1.2 ticks per camel. Sarcoptes species was the only mite observed during this study. The tick infestation rate varied significantly (p<0.05) between seasons (dry and wet), between sex groups, and between herd sizes of camels. However, there was no statistically significant difference (p>0.05) in the prevalence of tick infestation between the age groups. Mange mite infestation varied significantly between age groups (young and adults). Conclusion Finally, the tick and mange mite infestations were highly prevalent in the indigenous dromedary camels in the Babile district. Therefore, special attention should be given to the programmed tick and mite control campaign in the area.
Physiological Insights into Elite Sprint Paddlers: Unravelling Performance Dynamics and Training Implications
Authors: Dubey Suchishrava , Choudhary Prashant Kumar
Published: December 2023

Study purpose. This study aimed to investigate the relationship between physiological reactivity and sprint paddling performance among elite athletes, focusing on cardiorespiratory responses, metabolic efficiency, and energy utilization patterns.
Materials and methods. A group of N= 20 elite sprint paddlers from various regions in India was meticulously selected for this study. Detailed assessments of cardiorespiratory responses, metabolic efficiency, and energy utilization patterns were conducted using standardized protocols and cutting-edge measurement techniques. Individual differences among athletes were carefully documented.
Results. The study revealed a remarkable homogeneity among the athletes, reflecting stringent training standards. However, intriguing individual differences emerged, particularly in cardiorespiratory reactivity. Athletes with swift neural responses and adept metabolic acidosis adaptation showcased enhanced overall performance, indicating the critical role of the nervous system and efficient respiratory mechanisms in optimizing paddlers’ capabilities. Analysis of CO2 emissions and lactate concentrations indicated a balanced energy utilization pattern and optimal anaerobic metabolism and respiratory responses. Balancing anaerobic alactate and lactate capacities emerged as pivotal.
Conclusions. The findings underscore the need for targeted training programs that leverage individual differences, enhance neural adaptations, and metabolic acidosis tolerance, and optimize energy pathways. These transformative insights offer coaches, sports scientists, and athletes valuable tools to elevate performance outcomes. The study enriches our understanding of sprint paddling and serves as a paradigm for studying elite athletic performance, guiding the future of sports science and coaching. Future research avenues include exploring the long-term impact of tailored training interventions, investigating molecular mechanisms of cardiorespiratory reactivity, and studying psychological aspects of athletic performance. Comparative studies across diverse sports disciplines promise universal insights into elite athletic performance.
Comparative Analysis of the Efforts of Highly Qualified Elite Armwrestlers with Different Strength Abilities
Authors: Bezkorovainyi Dmytro , Kamayev Oleg , Vlasko Stanislav , Plotnytskyi Leonid , Kravchuk Yevhen , Kulakov Denis , Mashchenko Oksana , Kliuka Andrii
Published: December 2023

Study purpose. Determination of the peculiarities of the manifestation of strength in competitive exercises of highly qualified armwrestlers with different strength abilities.
Materials and methods. The study involved the 4 best armwrestlers in the world weighing from 80 to 100 kg (m = 87.50 ± 2.47 kg) in 2017–2020. Four power test exercises have been identified that ensure the performance of a competitive action in armwrestling: flexion of the fingers, stretch with a hammer, hook and bending the hand. Strength indicators in all test exercises were measured with an FL1K 0.5N, 1000N electric strain gauge dynamometer, Kern & Sohn GmbH (China), fixed on the armwrestling table using an author’s block device.
Results. The results of the correlation analysis of the relationships between the studied indicators confirm the presence of a difference in the direction and strength of the relationships between the strength and time characteristics of the efforts of athletes with different strength and speed-strength abilities. Thus, out of 36 correlation indicators, the data of armwrestlers 1 and 2 have 11 modules with very high connection strength (r = 0.926–0.999), of which 7 modules are with time and 4 modules are with force characteristics of efforts. Athletes 3 and 4 also have 3 modules with very strong connections (r = 0.916–0.948) and 8 modules with strong connections (r = 0.739–0.886), of which 7 modules are with strength indicators and 4 modules are related to time characteristics. But the other correlation indicators have very weak (r < 0.29) and weak (r = 0.3–0.5) levels of relationships.
Conclusions. Analysis of the time and force characteristics of the manifestation of force in the process of achieving boundary resistance allows us to clearly establish the genetically determined speed and strength abilities of the explosive, fast and slow force of armwrestlers.
Effects of Contrast Training with Two Sessions Weekly Frequency on Physical Fitness of University-Level Male Soccer Players
Authors: Thapa Rohit Kumar , Kumar Gopal , Raizada Shiny , Bagchi Amritashish
Published: December 2023

The purpose of this study was to compare the effects of a six-week contrast training intervention conducted twice per week during the preparatory period on the measures of physical fitness in university-level male soccer players.
Materials and methods. Sixteen players were selected as participants and randomly assigned to an experimental group or an active control group. Data were collected at baseline and after a six-week training intervention period for 15 m and 30 m linear sprint, medicine ball throw (MBT), standing long jump (SLJ), countermovement jump (CMJ), change of direction speed (CODS), peak torque (both legs) during extension and flexion, and running-based anaerobic sprint test (RAST).
Results. The analysis revealed reported significant small to very-large magnitude within-group improvement in all the dependent variables for the experimental group (p<0.001–0.028) but not for the control group (p=0.066–1.000). Further, the analysis of covariance with the pre-test scores as covariates revealed significant differences at post-intervention assessments for all the dependent variables, favoring the contrast training group (p<0.001–0.05).
Conclusions. A six-week contrast training intervention with two weekly sessions during the preparatory period may be sufficient to induce small improvement in the 30 m linear sprint and isokinetic strength of both legs, moderate improvement in the 15 m linear sprint, and MBT, large improvements in SLJ, RAST, and a very large improvement in vertical jump (CMJ) and CODS.
An Assessment of Maximal Isometric Hand Grip Strength and Upper Body Explosive Strength and Endurance in Various Ball Sports
Authors: Rahman Md Hamidur , Sharma J. P.
Published: December 2023

Background. Playing with the ball and using hand-arm strength and power are very crucial for ball game players. It takes arm force and endurance, as well as isometric hand grip strength, to accomplish ball-game skills.
Study purpose. The aim of the study was to evaluate maximal isometric hand grip strength, arm and shoulder explosive strength, and endurance in basketball, handball, and volleyball athletes.
Materials and methods. The study randomly selected 135 male athletes, including 45 basketball, 45 handball, and 45 volleyball players, aged 17 to 24, all competing at the inter-university level. Hand grip strength (HGS) for both dominant (DHGS) and non-dominant (NDHGS) hands was measured using a JAMAR hydraulic hand grip dynamometer. An over-the-head seated medicine ball throw (SMBT) test assessed explosive arm strength, while a push-up (PU) test evaluated muscular strength and endurance.
Results. The F-values (F) (2, 132) of DHGS, NDHGS, SMBT, and PU tests among basketball, handball, and volleyball players were .499 (p = .608); 1.166 (p = .315); 5.595 (p = .005); and 10.339 (p = .000), respectively. The results indicated that no notable distinctions were observed in DHGS and NDHGS among athletes in the three sports. However, considerable differences were found in the SMBT and PU tests.
Conclusions. The study concluded that basketball, handball, and volleyball players’ maximum isometric hand grip strength was nearly the same, but in both cases, the handball player's mean value was superior to others. Upper-body explosive power, muscular strength, and endurance showed distinct differences from one group to another.
Test Control of Inclusive Physical Education: Assessment Using the Newest Electronics
Authors: Blavt Oksana , Iedynak Gennadii , Galamanzhuk Lesia , Zhygulova Evelinа , Mykhalskа Yulia , Khomych Anatolii , Sovtysik Dmytro
Published: December 2023

The purpose of the study was to determine the effectiveness of a device developed based on the latest electronics to control the coordination of movements of the lower limbs of students with disabilities.
Materials and methods. 34 students with disabilities were involved in the study. At the time of the experiment, they had functional disorders of the lower limbs as a result of injuries and received a doctor’s permission to participate in the experiment. The research was conducted at the theoretical and empirical levels, using the following methods: analysis, synthesis, systematization, generalization, technical modeling, pedagogical testing, and mathematical statistics.
Results. In the research process, a device was used, which was developed as part of the conducted research. The device consists of two rubber mats in which capacitive proximity sensors are placed. The test task involves recording the number of touches of rubber mats in 20 seconds. The information received from the sensors during the student’s performance of the test task, namely the alternate touching of the rubber mat with the big toe, is sent to the microcontroller via an infrared communication line. The development uses a high-performance microcontroller ATMega 328P, which can support a wide range of sensors and generate information about the time and frequency of leg movements. The signals of the student’s toes touching the rubber mats, received by capacitive sensors, are processed by a microcontroller and displayed on a PC through a serial connection and using the Arduino software, which allows reading the received information about the execution of movements. Under the conditions of the pedagogical experiment, we tried to determine the quality of the measurement results. According to the obtained numerical indicators, the numerical values of the test authenticity obtained by the traditional method of fixing the results by a specialist correspond to the value “low”. The results of the validity calculations showed that the correlation between the test measurement results and the evaluation results using the developed device was optimal with a correlation coefficient greater than 0.6.
Conclusions. The importance of a high level of development of the coordination of movements of the lower limbs of students with disabilities is determined by the need to develop this quality to ensure the effectiveness of their rehabilitation in the process of inclusive PE. The analysis of the obtained material allows us to state that the practical application of the inclusive PE device developed based on the latest electronics will allow scientifically based optimization of this process to ensure its effectiveness.
Mathematical model of the formation of supply chains of raw materials from a commodity exchange under conditions of uncertainty
Authors: Rogulin Rodion
Published: December 2023

The formation of raw material supply chains is very closely related to production problems at a timber processing plant. Since the beginning of the second industrial revolution, one urgent question has been the formation of supply chains for raw materials and the optimal calculation of production volumes for each individual day. This article examines a forestry enterprise that does not have its own sources of wood, which daily solves the problem of ensuring the supply of raw materials and optimal production load. A commodity exchange is considered as a source of raw materials where lots randomly appear every day in different raw material regions. In the scientific literature, there are many approaches to calculating the optimal profit value over the entire planning horizon, but they do not consider many features that are important for a timber processing enterprise. This paper presents a mathematical model which is a mechanism for making daily decisions over the entire planning horizon and differs in that it allows one to take into account the share of useful volume and the delivery time of raw materials under conditions of uncertainty. The result of the model is the optimal profit trajectory, considering the volume of raw materials, the delivery time of lots, the volume of profit and the production volume of goods. The model was tested on data from the Russian Commodity and Raw Materials Exchange and one of the Primorsky Territory enterprises. Analysis of the results showed that there are difficulties in planning supply chains and production volumes. An assessment of the optimality of raw material regions was carried out. The advantages and disadvantages of the mathematical model are formulated.
Methods and models for substantiating application scenarios for the digitalization of manufacturing and business processes of network enterprises
Authors: Telnov Yury , Kazakov Vasiliy , Bryzgalov Aleksey , Fiodorov Igor
Published: December 2023

The process of digital transformation of enterprises is associated with the organization of manufacturing and business processes within the framework of selected types of business models and digital platforms, the distribution and economic substantiation of the roles of participants in network interactions, and ensuring the semantic interoperability of their interaction. Currently, certain experience has been accumulated in the implementation of modern business models for the digital transformation of enterprises which is reflected in the concepts of the Industrie 4.0, the Industrial Internet of Things, the creation of cyber-physical production systems, smart enterprises and intelligent manufacturing. At the same time, the issues of conceptual modeling of the architecture of digital enterprises, which determines the construction of manufacturing and business processes, and its economic substantiation depending on various factors of the external environment and internal economic potential have not yet been sufficiently researched and developed. All of the foregoing determines the relevance of the work presented here. The purpose of the study was to develop ontological and economic methods for substantiating application scenarios for the digitalization of manufacturing and business processes depending on the selected types of business models and digital platforms. To solve the problem, methods of classification, ontological engineering, activity-based costing and analysis of cash flows of income and expenses are used. The article presents an analysis of enterprise digitalization scenarios depending on the types of manufacturing and business processes, the types of business models and digital platforms used. An ontological model of enterprise digital transformation has been constructed, providing a choice of application scenarios for the digitalization of manufacturing and business processes for various types of business models and digital platforms. An economic model is proposed to justify options for constructing application scenarios for the digitalization of production and business processes depending on the distribution of roles of participants in network interaction using methods of activity-based costing and cash flow analysis.
Corporate Resilience in Cancel Culture Times
Authors: Evgrafova Rufina , Ivashkovskaya Irina , Shorokhova Ekaterina
Published: December 2023

Corporate resilience has emerged as a prominent focus in international studies, particularly in the context of the COVID-19 pandemic that unfolded in 2019. This attention has been amplified by the structural shifts in the business models of Russian companies, prompted by imposed sanctions, thereby accentuating the need for comprehensive academic exploration of resilience, its driving forces, and adaptive turnaround strategies, especially in the era of cancel culture. Despite the heightened significance of resilience, the drivers underlying it during structural crises remain insufficiently studied. This paper addresses this gap by employing a combination of quantitative methods applied to a sample of publicly traded Russian companies spanning the years 2012 to 2022 (first half), alongside case studies. Our contribution to the literature is manifold. Firstly, our application of Altman’s Z-score model to publicly traded companies unveils the industries with the highest and lowest resilience across the Russian market from a historical perspective. Secondly, we assert that fluctuations in the degree of resilience during turbulent times, as captured by the Z-score, offer a more adequate evaluation compared to popular market-based metrics like total shareholder returns (TSR). Thirdly, our findings reveal that higher credit ratings and state ownership have no evident impact on the degree of resilience. Conversely, the professional background of CEOs is correlated with firm performance and plays a significant role in determining company resilience amid cancel culture challenges.
Hill Women in the Time of Tribal Wars: A Reading of Folk Tales from Northeast India
Authors: Gorai Chaitali
Published: December 2023

What we know about women in traditional tribal societies in Northeast India is based on what oral traditions tell us about them. Although they were more resourceful and respected than the women of the plains societies, their disadvantages in a world teeming with tribal feuds were considerable. Ruthless enemies destroyed villages and killed everyone, but sometimes they spared the lives of women. When two hostile villages agreed to a truce, the women enjoyed freedom of movement, but only within the village. Kidnappings were frequent, and it was unsafe for women to leave the village unaccompanied by men. Their vulnerability prompted tribes to adopt measures such as face tattooing and the practice of tribe or village endogamy. Based on the evidence in oral traditions, mostly folk tales, this paper reconstructs the position of women in the tribal societies of Northeast India during the period of inter-tribal wars.
Trauma and Psychological Self-Destruction: An Overview of the Exasperating Emotional Imbalance in K R Meera’s The Unseeing Idol of Light
Authors: S Sruthi , A R Savitha
Published: December 2023

The present article discusses trauma and its impact on human emotions, particularly on women, in literature, with a focus on K R Meera's novel, The Unseeing Idol of Light. The research paper highlights the rise of trauma theory in literature and explores the cultural and psychological influence of trauma in literature. It also analyses the characters in the novel through the lens of emotional imbalance and interdependency and examines the interrelation between vision, love, and trauma. The prevalence of negative emotions over positive emotions in the novel has been discussed. The paper emphasises the importance of mental stability in contemporary society and discusses various themes such as psychic changes, loss, longing, and transformation. The researcher aims to analyse and relate the selected work with critical thinking to shed light on the cultural and psychological impressions of literature.
SPİRİTÜELLİĞİN KEMALİST HALLERİ: HAGİOGRAFİDEN NEW AGE İKONLUĞUNA
Authors: DEDE Kadir , DEMİREL Başak Su , ÇEKER Nisa
Published: December 2023

Bu çalışma Türkiye tarihinin üç farklı dönemine odaklanarak, spiritüellik ile Kemalizm ilişkisinin değişen yapısını ele almayı amaçlamaktadır. Erken cumhuriyet döneminde spiritüel hareketlerin etkisi sınırlı olsa da ulus inşası ve Atatürk’ün karizmatik otoritesinin teşkili süreçleri, sonraki on yıllarda spiritüel içeriklere dair bir meşruiyet ve aşinalık sağlamıştır. Bu sayededir ki, Soğuk Savaş döneminde spiritüel hareketler kendilerini, dindar muhalefet ve ahlaki kodların yitimi risklerine karşı Kemalist modernizasyon projesini güçlendiren bir unsur olarak sunmuştur. Son olarak Post-Kemalist zamanlara denk düşen üçüncü dönemde bazı spiritüel akımlar kendilerini Kemalizm’in savunucusu olarak konumlandırmış ve bu amaçla Atatürk’ün kişiliği ile ezoterizm ve mistisizm gibi güncel new age temaları arasında bir sentez oluşturmuşlardır. Ancak Kemalist kültlerin ve ezoterik pratiklerin popülaritesi, aynı zamanda dinsellik ve postmodern eleştiriler karşısında Kemalizm’in yenilgisinin de bir sembolü konumundadır.
Antalya-Elmalı Bölgesinde, Defineci Okültizmi ve Spiritüelleşme Üzerine Sosyolojik Bir Analiz
Authors: ÖZARSLAN Osman
Published: December 2023

Arkeoloji, Fransız devriminden sonra ortaya çıkmış bir bilgi biçimi olarak, antik dünyayı en temelde, mimari kalıntılar, ikonografi, nümizmatik, semiyografi, paleografi ve sosyal-fiziksel antropoloji aracılığıyla anlamaya ve anlamlandırmaya çalışır. Defineciler ise arkeolojik kalıntılarla, Süleyman’ın hazinesi ve Belkıs kıssasındakine benzer arketipik hikayeler, kalıntılardaki iz-işaretleri hazinenin kriptosu olarak gören ve bu kriptoyu çözebilecek okült bilginin Türk-İslam formu olan kenz-ül havas ‘ilmi’ne hakim cinci-muskacı-tılsımcı taifesi ve eşkıya söylenceleri aracılığı ile ilişkilenir . Arkeoloji biliminin bilgi üretme biçimi ile definecilerin bilgi üretme biçimi arasındaki gerilim, bu çalışmanın sahasının yapıldığı Elmalı bölgesinde de gözlemlenir. Bu iki bilgi biçimi arasındaki gerilim, özellikle definecilik ve definecilik etrafında dönen okült faaliyetlerle uğraşanların dünyayı anlamlandırma biçimi bizi çalışmanın temel problematiği olan bu senkretik katmanlar nasıl inşa edilir sorusuna götürür. İnşa edilmiş bu katmanların hangi amaçlara hizmet ettiği, işlevlerinin neler olduğu, nasıl işlediği diğer problematikler.

Bu çalışmada, tarihsel ve sosyal bir takım süreçlerin sonucunda inşa edilen senkretik katmanların aslında bir tür defineci okültizmi olduğu, bu okültizmin yalnızca tarihsel, dini ve yerel folklorik kaynaklar aracılığı ile değil, sosyal medya aracılığıyla daha katmanlı bir şekilde inşa edildiği anlatılmaya çalışılıyor. Ayrıca, bu okült bilginin definecilik faaliyetleri içerisinde çok merkezi gibi görünse de aslında, bir tür tamamlayıcı bilgi olduğu ve define bulmaktan ziyade, definecilik faaliyetlerinin sürdürülebilir kılmaya yarayan bir moral kod olduğu anlatılmaya çalışılıyor. Elmalı bölgesindeki okültizmin yerel folklorik, tarihsel kaynakları olduğu kadar sosyal medya üzerinden genel ve daha yoğun bir dolaşımı da var. Bu makalenin ele aldığı konulardan birisi de, sosyal medya üzerinden yapılan bu yayınların, okült bilgiyi daha ezoterik hale getirdiği ve bu ezoterikleşmenin aslında define piyasasında dolaşımda olan hem maddi değeri hem de epistemoloji katmanını kontrol altında tutmaya dönük olduğu olacak.
SINIRLARI AŞAN DERVİŞLER: BEKTAŞİLİĞİN KÜLTÜREL İLİŞKİLERİ (1826-1925) ÜZERİNE
Authors: YILMAZ Eren
Published: December 2023

Cem Kara’nın Sınırları Aşan Dervişler: Bektaşiliğin Kültürel İlişkileri (1826-1925) kitabı, 2017’de tamamladığı ve 2018’de Almanca yayımlanan doktora tezinin (Grenzen überschreitende Derwische: Kulturbeziehungen des Bektaschi-Ordens 1826-1925, Vandenhoeck & Ruprecht) Türkçe çevirisi. Kara’nın bu çalışması, 2018’te Southeast Association Doktora Tezi Ödülü ve 2022’de Annemarie Schimmel Ödülü’nü aldı.
MUTLU YURTTAŞ İMALATI: MUTLULUK ENDÜSTRİSİ HAYATIMIZI NASIL KONTROL EDİYOR?
Authors: ŞEN Başak
Published: December 2023

Tarih boyunca üzerine pek çok tartışma yapılan ve muğlak bir kavram olan mutluluk, önceleri sınırları belli olmayan, ütopik bir hedef olarak görülürken 2000’lerden itibaren pozitif psikoloji şemsiyesi altında bilimsel bir zemin kazanmıştır ve mutluluk ekonomisinin ortaya çıkmasıyla birlikte neoliberal kapitalist sistemin ideolojilerinin gerçekleştirilmesinde güçlü bir araç haline gelmiştir. Artık hayatımızın her alanında kişisel gelişim kitabı yazarları, yaşam koçları, iş insanları, özel kurumlar ve vakıflar, ünlüler ve pozitif psikologlar insanlara mutluluk vaazı vermeye başlamıştır, mutluluk hayatlarımızda gündelik olarak (per diem) ve bıkkınlık verecek ölçüde (ad nauseam) yer etmiştir (Cabanas ve Illouz, 2023, s. 12). Pozitif psikolojiye göre mutluluk, bireylerin kendi elinde ve kendi sorumluluğundadır, insanlar kendi öz-imkânlarını kullanarak yükselebilme ve olumsuz koşulları gelişim ve başarı için fırsata dönüştürebilme potansiyeline sahiptir. Ancak bilimsel temellerinin oldukça sorunlu olması ve öğretilerinin insanlar üzerinde istenilen sonuçları doğurup doğurmadığının şüpheli olması bakımından pek çok sosyolog, felsefeci, antropolog, psikolog, gazeteci ve tarihçi pozitif psikolojiye eleştirel yaklaşmıştır.
Retention Evaluation of Implant-Supported Mandibular Overdenture Using Two Different Attachment Systems: An in Vitro Study
Authors: Ali Taban , Othman Kawan
Published: December 2023

Objective: The purpose of this in vitro study was to evaluate the retentive behavior of implant-supported overdenture using two different attachment systems (locator and milled bar-clip attachment system).

Methods: Six edentulous mandibular models were fabricated from cold‑cure PMMA; the denture-bearing area of the acrylic resin model was covered by an approximately 1.5 mm thick silicone resilient liner to simulate mucosa. The Study models were divided into three groups: Model A (locator), Model B (milled bar-clip attachment system without extension), and Model C (milled bar-clip attachment system with 1cm extension). However, for each study model, a complete mandibular denture was constructed. Anterior, posterior, and central dislodging forces were measured by digital force gauge at the beginning of the study (Initial retention) and after 540 courses of consecutive pulling and inserting the prosthesis (final retention), which was to simulate six months of overdenture use assuming three daily removals and insertions for oral hygiene practice.

Results: There were statistically significant differences in retention between the group models, and milled bar-clips attachment systems revealed the highest retentive capacity. However, after six months of simulated use, there was a significant retention loss; retention of Model B recorded the highest percentage loss of 55.1%, while Model A recorded the most minor retention loss of 24%. 

Conclusions: The bar and clip attachment system offered higher retentive values than the locator attachment system. However, the retention loss was correlated to the particular attachment system, and the bar–clip attachment systems had the highest percent of retention loss. In contrast, the locator attachments were associated with acceptable retention, simplicity, and minimal retention.
Issues and Challenges in the Philippine Construction Industry: An Opportunity for BIM Adoption
Authors: DİMACULANGAN Erold
Published: December 2023

The construction industry is widely regarded as the driving force behind global economic growth. The Philippines recorded a GDP increase of 11.8% in the second quarter of 2021. The construction industry is one of the main contributors, with a growth rate of 25.7%. However, the industry faces numerous challenges and issues, the most well-known of which involve the iron triangle of project management, attributed mainly to poor technology adoption, resulting in massive declines in productivity.

Building Information Modeling (BIM) is a popular technology with proven benefits, as demonstrated by countries that have mandated its use. However, BIM is said to be in its infancy in the Philippines. Construction professionals have a low level of awareness, and BIM is primarily used by firms that are outsourcing their services for international projects.

This study aims to identify construction industry issues and their degree of occurrence in Philippine construction. The study also seeks to determine the current state of BIM and identify the current BIM applications to resolve these issues. The study utilized a mixed-methods approach involving a literature review and a structured survey. Data analysis includes Cronbach’s alpha for reliability testing, descriptive statistics, the Relative Importance Index (RII), and Kendall’s W test.
Removal of Methylene Blue Dye in Aqueous System Using Polyvinyl Alcohol and Chemically Modified-Aluminium Foil Blend
Authors: MOHAMMED Aliyu Danmusa , IBRAHİM TSAGERO Abubakar
Published: December 2023

Aqueous solution containing different concentrations of methylene blue dye was treated with chemically modified aluminium foil/PVA blends. There have been impressive decolourisation of the dye molecules in the aqueous system treated with the blends. Contact time and amount of composite facilitate more decolourisation of the dye solution. 97 % dye removal has been recorded at optimum conditions of the experiment. Energy dispersive X-ray fluorescence (EDXRF) analysis was used to determine the elemental composition of the aluminium foil and FTIR analysis was used to ascertain the composite formation between the foil and PVA. The blends have shown an impressive swelling property in aqueous system and poor to moderate in other organic solvents.
Determination of Gas Potential and Urban Solid Waste Management in Elazığ
Authors: ARGUNHAN Zeki , YÜCEL Halit Lutfi , YILDIZ Cengiz
Published: December 2023

Solid wastes make the most important environmental problems caused by human all over the world. In recent years, the amount of solid waste has been increasing in Elazig day by day with rise in the population and industrialization.

The solid waste managing systems contain the methods such as proper storage, recycling, processing the solid waste by means of biological methods (compost), and disposal with thermal methods (burning, gasification, and pyrolysis). Of these methods, the proper storage is the most common one in Elazig. By time, using up the oxygen within the wastes stored in the proper fields, the storage gas occurs as a result the decay without oxygen (anaerobic) with the help of anaerobic bacteria proliferate in this environment.

In this study, solid waste disposal methods have been investigated for storage gas by giving Elazig example.