bluuebunny/crossref_metadata_2025 huggingface dataset:
EFL Learners' Engagement: Empowering EFL Young Learners to Initiate Speaking Through Personalizing Meaningful EFL Classroom Activities
Authors: Minalla Amir Abdalla
Published: March 2023

The study aims to determine whether personalizing classroom activities with meaningful and realistic situations can encourage EFL beginners to apply their learning experiences to verbal practices. The study employs a pretest, a posttest, and an interview as tools for data collection. Although the learning material was the same for both groups, the control group's participants were taught in a classroom using a traditional method based on one-size-fits-all instruction, whereas the experimental group's participants used a personalized learning method. The findings show that participants in the experimental group, whose class uses the personalized learning method, outperform participants in the control group, whose class uses the traditional method based on one-size-fits-all instruction. Hence, personalizing classroom learning experiences is an effective means of empowering EFL beginners to initiate speaking, particularly at the early stage of their learning. Thus, it recommends personalized classroom activities as an effective means for engaging beginners in verbal practices.
Crusade for Identity: An Exploration of Space Among Gender, Diversity and Inequality in Anna-Marie McLemore’s When the Moon Was Ours and Blanca and Roja
Authors: B Harry , M Vijayakumar
Published: March 2023

The purpose of the research is to comprehend the highly polymorphic notion of identity in the works of Anna Marie McLemore, a Mexican American writer. A detailed inspection of his works indicates that the concept of ‘identity disintegration’ is a concern in virtually all of them. This research aims to demonstrate identity development as a process rather than a distinct result of the struggle. Identity development, as an ever-changing process, provides us with new avenues for investigating subjectivity. Using a close reading of the selected texts, this research demonstrates that identity disintegration is an ongoing process that can create new understandings and possibilities. Through these processes and subsequent learning to survive in postmodern society, individuals can create their subjective identities. This article uses When the Moon Was Ours and Blanca and Roja to relate young adult literature to magical realist canonical works, notably analysing how the texts use magical realism to examine trans bodies. The genre, magical realism is typically characterized by fluidity and intangibility, which explores gender and sexuality in the select texts, helping readers grapple with issues of identity and representation. Similarly, McLemore’s use of Latinx traditions allows young readers to engage in intersectional debates about magical realism, trans bodies and Latinx culture. Through the retelling, McLemore can present nuanced arguments about trans bodies and the Latinx culture that often rejects them which in turn inspires the young readers to explore with an open mind.
Ecocriticism in Modern English Literature
Authors: Fawareh Abdalaziz Jomah Al , Dakamsih Nusaibah J. , Alkouri Ahmad Mohd
Published: March 2023

Ecocriticism these days is indeed a relatively new revisionist and reformist trend that has dominated the ecological point of view in recent English literature worldwide. The ecological perspective constructed under Eco-criticism delineates the nature-human alliance in both detrimental and constructive ways. The present research paper tries to inspect some post-1900 modern English literature from an Ecocritical perspective. The literature reviewed in the present study incorporates the analysis of some well-known authorship whichever is eminently written to gain insights from the ecological frame of reference. Analyzing some notable works culminates in the conclusion that the trend of Ecocriticism progresses from ‘nature- a mystic substance ‘and ‘nature’s interconnectedness to action ‘importance of maintaining nature, ‘eco-consciousness and eco-literacy about environmental issues, and finally calls to action.
Incidencia, complicaciones inmediatas y tempranas de desgarros perineales graves durante el parto en una institución de referencia de atención obstétrica en Medellín, Colombia
Authors: Jiménez-Arbeláez Ana Lucia , Giraldo-Giron Paulina , Arias-Zapata Catalina , Campo-Campo María Nazareth , Echavarria-Restrepo Luis Guillermo , Cuesta-Castro Diana Paola
Published: March 2023

Introducción: los desgarros perineales severos (DPS) son complicaciones obstétricas que se presentan durante la atención del parto. Pueden desencadenar fístulas rectales e incontinencia fecal y urinaria, morbilidad a mediano y largo plazo que requiere un diagnóstico, manejo y seguimiento adecuado. Objetivo: determinar la incidencia de los DPS y las complicaciones relacionadas inmediatas −primeras 48 horas− y tempranas −primeros tres meses− posteriores a la atención del parto.Metodología: se hizo un estudio de cohorte descriptiva de pacientes con DPS durante la atención del parto en un centro de referencia de atención obstétrica en Medellín, Colombia, entre enero del 2015 y diciembre del 2017. Se revisaron las historias clínicas y se registraron los datos clínicos y las complicaciones inmediatas y tempranas en las que asistieron a cita de control de piso pélvico. Se presentan medidas descriptivas de resumen.Resultados: se atendieron 14.247 partos vaginales. La incidencia de DPS fue del 1,6 % (233/14.247), 1,3 % (184/14.267) de grado III y 0,3 % (49/14.247) de grado IV. El 66,5 % (155/233) tuvo parto vértice instrumentado, 81,9 % (191/233) episiotomía; la mediana del periodo expulsivo fue de 19 minutos (RIQ 12-35), y el 3 % (7/233) presentó distocia de hombros. Las complicaciones inmediatas en las pacientes con DPS fueron: 0,85 % (2/233) dehiscencia de sutura e infección de la herida, 0,85 % (2/233) solo dehiscencia y 0,42 % (1/233) solo infección de la herida. El 18,4 % (43/233) asistieron al control uroginecológico al tercer mes. Entre ellas, el 38,2 % (13/43) tuvo al menos una complicación, principalmente incontinencia fecal y de flatos, 16,3 % (7/43) y 13,9 % (6/43) respectivamente. Conclusiones: la incidencia de DPS y de complicaciones del posparto inmediato en la institución fueron poco frecuentes. Se deben mejorar las estrategias de seguimiento posparto mediante protocolos institucionales, con el fin de identificar y brindar un manejo oportuno de las complicaciones a mediano plazo.
Clorhidrato de creatina versus monohidrato de creatina, diferencias en solubilidad, efectos ergogénicos y composición corporal
Authors: Murillo Zapata Cristian Marcelo , Cardona Gil Claudia Patricia , Acosta Bermúdez Laura Cristina
Published: March 2023

Antecedentes: la creatinina monohidratada ha sido ampliamente estudiada en el rendimiento deportivo. Recientemente se han explorado otras moléculas que suponen resultados superiores, como el clorhidrato de creatina que promete tener una mejor solubilidad y similares beneficios en el rendimiento deportivo y composición corporal. Objetivo: presentar las diferencias entre creatinina monohidratada y clorhidrato de creatina en términos de solubilidad, rendimiento deportivo y composición corporal. Materiales y métodos: revisión de artículos científicos en humanos y animales, publicados entre el año 2009 y 2020. Resultados: en relación con la solubilidad y propiedades químicas, el clorhidrato de creatina tiene mayor peso molecular, solubilidad, absorción y biodisponibilidad y menor pH, efectos adversos y dosis para logar efectos ergogénicos que la creatina monohidrato. Respecto al rendimiento deportivo y composición corporal ambas moléculas presentaron mejoras en el rendimiento y fuerza máxima, no todos los estudios mostraron disminución en la masa grasa para clorhidrato de creatina, la cual presentó menor retención intramuscular de agua. Conclusión: existe una tendencia a favor del clorhidrato de creatina respecto a la solubilidad y la composición corporal. No se encontró evidencia suficiente para concluir que sus efectos en el rendimiento deportivo, específicamente en términos de fuerza, sean superiores a los del clorhidrato de creatina.
Total phenolic, monomeric anthocyanin content and antioxidant activity of Berberis commutata Eichler fruits
Authors: Del Carpio-Jiménez Carla
Published: March 2023

Background: Berberis commutata Eichler is a berry that grows in the Peruvian Andes and has been consumed in the Andes of South America since ancient times. The edible fruits have an intense purple color and are rich in anthocyanins and phenolic compounds that are available from February until May each year. The color of the fruits is a soft purple dye for natural fibers, and many birds use them as food.
Objective: This study quantified the total phenolic, monomeric anthocyanin content and antioxidant activity of Berberis commutata Eichler berries.
Methods: The total phenolic content was determined by the Folin-Ciocalteu colorimetric assay. Monomeric anthocyanin content was determined by the pH difference method, and the antioxidant activity was measured using the Brand-Williams method.
Results: The total phenolic content was 7,490 ± 0.85 mg GAE/100g, and the monomeric anthocyanin content was 70 ± 0.03 mg/100g. The antioxidant activity of the berries showed a tendency to increase with B. commutata extract concentration; an EC50 of 0.91 mg/mL was calculated, indicating a high antioxidant power.
Conclusion: Our results showed that B. commutata E. has both high total phenolic content and monomeric anthocyanins comparable to other superfruits and increased antioxidant activity, which means that it is possible to use this berberis species as a functional food.
A Study on Tiredness Assessment by Using Eye Blink Detection
Authors:   Dept. of Electrical and Electronic Engineering, University of Dhaka, Dhaka 1000, Bangladesh, Islam Arafat , Rahaman Naimur ,   Dept. of Electrical and Electronic Engineering, University of Dhaka, Dhaka 1000, Bangladesh, Rahman Ahad Md Atiqur ,   Dept. of Electrical and Electronic Engineering, University of Dhaka, Dhaka 1000, Bangladesh
Published: March 2023

In this paper, the loss of attention of automotive drivers is studied by using eye blink detection. Facial landmark detection for detecting eye is explored. Afterward, eye blink is detected using Eye Aspect Ratio. By comparing the time of eye closure to a particular period, the driver’s tiredness is decided. The total number of eye blinks in a minute is counted to detect drowsiness. Calculation of total eye blinks in a minute for the driver is done, then compared it with a known standard value. If any of the above conditions fulfills, the system decides the driver is unconscious. A total of 120 samples were taken by placing the light source front, back, and side. There were 40 samples for each position of the light source. The maximum error rate occurred when the light source was placed back with a 15% error rate. The best scenario was 7.5% error rate where the light source was placed front side. The eye blinking process gave an average error of 11.67% depending on the various position of the light source. Another 120 samples were taken at a different time of the day for calculating total eye blink in a minute. The maximum number of blinks was in the morning with an average blink rate of 5.78 per minute, and the lowest number of blink rate was in midnight with 3.33% blink rate. The system performed satisfactorily and achieved the eye blink pattern with 92.7% accuracy.
Modeling Severity of Road Traffic Accident in Nigeria using Artificial Neural Network
Authors:   faculty of civil and environmental engineering, near east university, near east boulevard nicosia, north cyprus, mersin 10, turkey, Umar Ibrahim Khalil , Gokcekus Huseyin ,   faculty of civil and environmental engineering, near east university, near east boulevard nicosia, north cyprus, mersin 10, turkey
Published: March 2023

In this study, an Artificial Neural Network (ANN) was used to model injury and fatality index in Nigeria with the aim to determine the effects of the number of GSM subscription (NGS) on the injury and fatality index in the country. Fifty-seven-year data from 1960-2016 comprising of Gross Domestic Product (GDP) per capita, population, NGS, the total number of traffic accidents, number of fatality and injury per year were used for developing the model. The result of the ANN implies that adding the NGS to the model has increased the model performance in both training and testing with a determination coefficient increasing by 18.7% and 2.5% in testing for fatality and injury index respectively. Comparing the performance of the ANN models and regression analysis shows the superiority of the ANN technique over the regression analysis for both injury and fatality index models. The goodness of fit of the model was further checked using t-test at 5% level of significance and the result proved the ANN approach as a powerful tool for modeling the severity of road traffic accident. Strict enforcement against the use of phone while driving will help reduce the accident severity caused as a result of phone usage while on wheels.
A Framework for Six-Sigma Implementation in Rubber Manufacturing Industry – An Innovation between DMAIC Cycle and Quality Improvement Tools
Authors:   Department of Science and Technology, Open University Malaysia, Malaysia, Darus Zamri , Ab Rahman Mohd Nizam ,   Centre for Materials Engineering and Smart Manufacturing, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Selangor, Malaysia, Rafique Muhammad Zeeshan ,   Department of Mechanical Engineering, Faculty of Engineering & Technology, The University of Lahore, Lahore, Pakistan
Published: March 2023

Quality improvement tools are commonly utilised by the industries to attain quality products and benefits like reduction in scrap cost and wastes. In order to achieve the proper implementation of quality tools, a theoretically developed framework inclusive of six-sigma DMAIC (Define, Measure, Analyse, Improve & Control) cycle is required. Also, the quality tools associated at each stage has thoroughly implemented on a case study which carries a real-time issue related to the quality products production. The issue has thoroughly resolved through the right application of quality tools like Failure Modes and effects analysis (FMEA) on the compression moulding technique utilised for the production of Rubber Valve Sleeve Liner (RVSL) under the umbrella of DMAIC cycle. The benefits achieved are 23.1% reduction in scrap rate, 63.8% reduction in Delivery on time (DOT) with savings gained almost RM26,880/month. The relationship between DMAIC cycle and quality tools for quality improvements under the platform of lean six sigma which is highly beneficial for academicians, practitioners and engineering managers working in this field with a limitation of implementation only in the rubber manufacturing industry. In future, the developed framework should be implemented in some other manufacturing industries.
Velocity Modelling for Pipeline Inspection Gauge
Authors:   Chemical Engineering Programme, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia, Zi Li Low , Rosli Masli Irwan ,   Research Centre for Sustainable Process Technology (CESPRO), Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia, Panuh Dedikarni ,   Department of Mechanical Engineering, Universitas Islam Riau, Indonesia
Published: March 2023

Pipeline inspection gauges (PIGs) apply in oil and gas industries, particularly in cleaning, dewatering, and inspecting pipelines. Also, both the speed and driving pressure for the PIGs operation are deduced basis on the guesswork or experience. In this study, the dynamic behaviour of PIGs in gas pipelines is investigated. The dynamic differential equations of PIG velocity are used to calculate the motion of models Solghar and Nieckele. Differential and other conditional equations are simultaneously solved by using the ODE45 built-in function of the MATLAB® software. Generally, the dynamic motion of PIGs depends on the differential pressure of the fluid and can be affected by other parameters, such as bypass area and frictional force. Therefore, we further examine and consider these parameters in modelling. We validate the modelling results by comparing them with the experimental results obtained by a PIG manufacturing company. Results show that the Solghar model is more suitable than Nieckele model in operating condition selections. The increasing bypass area and frictional force reduce the movement speed of the PIG because of the decrease in the pressure difference between the PIGs. Subsequently, a graphical user interface is created and customised in MATLAB® to automate the calculation of PIG velocity.
Heavy Metals Detection from Contaminated River Using Molybdenum Reducing Enzyme
Authors:   Institute of Ocean and Earth Science, University of Malaya, Kuala Lumpur, Malaysia, Abu Bakar Nurlizah , Othman Ahmad Razi ,   Research Centre for Sustainable Process Technology, Faculty of Engineering and Build Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia, Shukor Mohd Yunus ,   Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Malaysia
Published: March 2023

Heavy metals contamination in Malaysia River has attracted concern among Malaysians. The issue arises when the Department of Environmental Malaysia in 2015 claimed the number of polluted river has increased from year 2000 to 2015. Therefore, the monitoring method is required in order to screen the polluted area. Current monitoring systems involved analytical methods such as Atomic Absorption Spectrophotometer (AAS) and Inductively Coupled Plasma (ICP) are costly, thus, the development of effective method and cost effective in screening heavy metal contamination is required. Molyhdenum-reducing enzyme has a potential to detect heavy metals contamination in river water samples. The enzyme extracted from locally isolated bacteria labeled as Bacilus sp. strain A.rzi was partially purified based on ion exchange chromatography using High Performance Liquid Chromatography (HPLC). The screening for heavy metals inhibition towards Mo-reducing enzyme was based on colorimetric analysis. Data for IC50 determined using statistical analysis (one phase decay plot) showed. Significant inhibition with three heavy metals (copper, lead and mercury) towards Mo-reducing enzyme. Copper showed the highest IC50 value of 0.25 mgL-1 followed by mercury and lead at 0.35 mgL-1 and 0.49 mgL-1 respectively. Screening for river water samples showed that Mo-reducing enzyme positively reacted to heavy metals in water samples. The Colorimetric based assay also showed heavy metals present in river water samples had inhibited Mo-reducing enzyme activity. The enzyme could reduce heavy metals to form molybdenum blue and was observed during reaction. Due to this unique feature, Mo-reducing enzyme can be proposed as a bioassay method for detecting heavy metal in river samples.
PROCESSES OF SELF-ORGANIZATION AS A TOPIC OF PHILOSOPHICAL COMPREHENSION IN THE UKRAINIAN PHILOSOPHY OF SCIENCE
Authors:   Taras Shevchenko National University of Kyiv, Ukraine, DOBRONRAVOVA Iryna
Published: March 2023

Topic of the article is Ukrainian philosophy of science, which last 50 years comprehended the modern scientific revolution as becoming of non-linear science. This year of celebrating 300th anniversary of Grygoriy Scovoroda as a symbol of Ukrainian philosophy is good time to make a look round achievements by this branch of our philosophy. Philosophical comprehension of self-organization as becoming of a new whole is the point of consideration for the reason that transition to studying of such objects needs the crucial change of scientific foundations system, especially of philosophical foundations of science. Potentially Ukrainian philosophy of science was ready to such work since Kyiv’s philosophers traditionally applied dialectic ideas to study worldview and to understand scientific truth as a process. It was shown in the article how Ukrainian philosophers of science use achievements of this tradition to understand non linear [synergetic] picture of our world as one of many possible worlds in self-organization of its genetic unity as a whole, beginning of becoming of the set of elementary particles with their interactions as its basic substance. Elaboration by Ukrainian philosophers of epistemic foundations for ideals and norms of non linear researches was represented also, particularly the consideration of truth as nonlinear process and rethinking of relations between fundamental and applied knowledge in respect of descriptiveness of non linear theories. Transdisciplinarity of Synergetics as common scientific research program leaded to application of synergetic ideas to humanities. Collaboration of humanitarians with philosophers who elaborate philosophical foundations for Synergetics created respective divisions in humanitarian disciplines, which studied processes of human and social self-organization. This collaboration created Ukrainian synergetic community as public organization of scientists who have enlighten aim to disseminate the synergetic ideas in Ukrainian society. This aim was successfully realized rather for the reason that self-organization is a good tradition of Ukrainian people who demonstrated it already in XXI century on Maidans, in volunteer movement and in resistance to Russian aggression.
TREVELLING PHILOSOPHY OF HRYHORIY SKOVORODA IN THE REFLECTIONS OF NEURAL NETWORKS
Authors:   National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Ukraine, STREBKOVA Julia , KRAVCHENKO Iryna ,   National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Ukraine
Published: March 2023

Hryhorii Skovoroda is the most prominent figure in the history of Ukrainian philosophy. His works also had been elaborated in detail. The article substantiates the relevance of further studies of the image and creativity of the philosopher, their importance for the image of modern Ukrainian studies. The author stated that a new look at the social reality of the 21st century is impossible without taking into account the development of digital technologies. The interaction of the participants of the modern Internet goes beyond the scope of improved communication. The use of neural networks for socio-philosophical studies of visual culture is a new stage in the development of visual research methods. In the article, we had been tried to combine the theories of visual analysis with empirical sociophilosophical research. It was concluded that the use of a neural network has a considerable heuristic potential, complements, strengthens and enriches scientific analytics on the problems of Skovorodology. The textbook doctrine of Hryhorii Skovoroda about the three worlds inspired us to explore the world of texts, the world of images, and the world of symbols. H. Skovoroda’s author’s texts named skovorodians in Ukrainian language had been analyzed in the study. Emphasis was placed on the availability and distribution of full-text works in the Internet network. Key words and concepts in the scientific works of Ukrainian researchers in various fields of knowledge were analyzed. The world of symbols that make up the sacralized space of the culture of the modern world had been processed with the help of the Google image search engine. The work examines how the general features of the biography and personality of the philosopher and writer, as well as the philosophical and literary heritage of the thinker, are reflected in the symbolic world. In the theories of symbolism of H. S. Skovoroda, we relied on the developments of D. Chyzhevsky, T. Lutoy, M. Ryk. The world of images had been explored using the Midjourney neural network query generation. It was concluded that adressing to the neural network leads the research of Hryhoriy Skovoroda's artistic images beyond the boundaries of aesthetics and philosophy of arts into the existence of "living Ukrainian philosophy". Carrying out an interpretive analysis of images generated by a neural network, the authors are faced with the question: is the generated image a new source of primary information for analysis? This article describes the search for an answer to this question.
BIBLICAL NARRATIVES IN THE WORKS OF HRYHORIY SKOVORODA
Authors:   Rivne State University of the Humanities, Ukraine, Tetyana SHAMSUTDYNOVA-LEBEDYUK Tetyana SHAMSUTDYNOVA-LEBEDYUK
Published: March 2023

The article reveals the place of the Bible in the formation and confirmation of Grigory Skovoroda's worldview. It occupied a special place among the sources of knowledge of the surrounding world in the life and work of a prominent Ukrainian philosopher, our national pride. Biblical themes, quotations from the Bible are present in all works of Grigoriy Skovoroda, including in his private letters. In his explanations, questions or answers, he always referred to the biblical text. Despite the fact that the thinker knew the Holy Scriptures perfectly, he constantly read and studied them, thought about every word, every detail of the text, interpreted and said that in the simplest, at first glance, statement very often hidden a deep meaning that is not accessible to everyone and understanding. H. Skovoroda, seeing symbolic images in the Bible, expressed the opinion, which is the basis of his philosophy, about the need for a higher, spiritual, allegorical understanding of the Bible and advised to read it without haste, to carefully consider what was read, so as not to mindlessly perceive the stories and sayings contained in long past times. His position on the interpretation of the Holy Scriptures was based on allegorical-symbolic concepts, based on the method of early Christian exegesis. In view of this, G. Skovoroda did not accept either a dogmatic, once-and-for-all established interpretation of Biblical texts, or its literal understanding, considering such an approach to be far from the search for the precious truth contained in the Bible. He expressed the opinion, which is the basis of his philosophy, about the need for a higher, spiritual, allegorical understanding of the Bible. In his works, the philosopher also reinterprets biblical images, giving them a different meaning. Thanks to biblical characters, the author reveals such human traits as truthfulness, sincerity, kindness, mercy, love for one's neighbor. The philosopher believed that the Bible is a "field of God's signs", where each sign is a symbol. It is these symbols, according to Grigory Skovoroda, that open the best part of our mind, prompting it to know the fullness of divine Truth. It was the Bible that became for him an important source of knowledge, a spiritual imperative that determined the development of H. Skovoroda as a philosopher and religious thinker.
CHARACTERISTIC OF FRICTION STIR WELDING WELD JOINT OF AA 6061 ON INITIAL TEMPERATURE DIFFERENCE
Authors:   Mechanical Engineering Department, Brawijaya University, SUGIARTO Dr. , MA’ARIF MOCH. SYAMSUL ,   Mechanical Engineering Department, Brawijaya University, PURWANTO HELMY ,   Mechanical Engineering Department, Universitas Wahid, ERY MAHENDRA WAYAN JORSA ,   Mechanical Engineering Department, Brawijaya University, OSWARI HIZKIA ,   Mechanical Engineering Department, Brawijaya University
Published: March 2023

Friction stir welding (FSW) is a solution to overcome the problems of AA 6061 welding. When the initial temperature T0 of the material is increased during the FSW process while the FSW process parameters are kept constant then FSW welding parameter value can be lowered. T0 was varied by Troom temperature, 50 0C, 75 0C, 100 0C and 125 0C. The weld joint design form is a square butt joint. By using this approach the higher the T0, with the FSW parameter being kept constant, produce the higher the welding peak temperature and cooling rate, the smaller and smoother the metal grain structure in the weld nugget, TMAZ and HAZ, the higher the hardness of the weld nugget and the higher the tensile strength eventough welding defects in the form tunneling, kiss bond, and void are still observed.
SIMULATION AND OPTIMISATION OF THE ASSEMBLY LINE PRODUCTION PROCESS
Authors:   VSB – Technical University of Ostrava, Faculty of Mechanical Engineering, Department of Mechanical Technology, SCHINDLEROVA VLADIMIRA , SAJDLEROVA IVANA ,   VSB – Technical University of Ostrava, Faculty of Mechanical Engineering, Department of Mechanical Technology, BUCKO MICHAL ,   VSB – Technical University of Ostrava, Faculty of Mechanical Engineering, Department of Mechanical Technology, KLEPKOVA LUCIE ,   VSB – Technical University of Ostrava, Faculty of Mechanical Engineering, Department of Mechanical Technology
Published: March 2023

Optimisations in production processes are routine in most engineering companies. The possibility of using simulation is crucial for the industry in the 21st century because it provides an opportunity to verify many variants in a very short time. The results obtained in this way can then contribute to faster decision-making in the field of manufacturing process optimisation. The paper includes a case study of the assembly line production process. The aim was to find bottlenecks in the product production process and capture and propose improvements not only in the technical but also in the production and ergonomic area. A "virtual twin" of the given process was also created in the Witness simulation program with the possibility to analyse and verify proposals for the work activities redistribution of assembly station operators.
ENGINE INTAKE AIRBOX CFD OPTIMISATION AND EXPERIMENTAL VALIDATION TESTS
Authors:   VSB-Technical University of Ostrava, Faculty of Mechanical Engineering, Institute of Transport, MUCKOVA PETRA , KALABZA ONDREJ ,   VSB-Technical University of Ostrava, Faculty of Mechanical Engineering, Institute of Transport, FAMFULIK JAN ,   VSB-Technical University of Ostrava, Faculty of Mechanical Engineering, Institute of Transport, SMIRAUS JAKUB ,   VSB-Technical University of Ostrava, Faculty of Mechanical Engineering, Institute of Transport, SIROKY JAROMIR ,   VSB-Technical University of Ostrava, Faculty of Mechanical Engineering, Institute of Transport, MIKOVA JANA ,   VSB-Technical University of Ostrava, Faculty of Mechanical Engineering, Institute of Transport
Published: March 2023

The effective power of an internal combustion engine is determined by the amount of air that is drawn into the cylinder. One of the basic requirements for the intake is the even filling of all cylinders. This paper deals with the design of an airbox 4-cylinder 2.2 liter naturally aspirated SI engine. The CFD simulation of the air flow through the serial airbox was performed. This showed an uneven filling of the cylinders. With the help of CFD simulations, the shape of the airbox was optimized to improve the uniformity of the cylinders filling. The validation tests of the real airboxes on the flow bench were performed. The standard airbox and the airbox with the optimized shape were compared. The results confirmed the CFD simulations outputs. Furthermore, it has been shown that the air filter chamber can contribute to the uniform filling of the cylinders. The research resulted in the optimization of the engine's intake tract airbox shape.
THE USE OF GEOGEBRA IN TECHNICAL MATHEMATICS
Authors:   VSB-Technical University of Ostrava, Faculty of Mechanical Engineering, Department of Mathematics and Descriptive Geometry, SCHREIBEROVA PETRA , MORAVKOVA ZUZANA ,   VSB-Technical University of Ostrava, Faculty of Mechanical Engineering, Department of Mathematics and Descriptive Geometry
Published: March 2023

In many technical fields, it is necessary to have a basic set of mathematical skills. Engineers need to calculate and understand concepts. They have to know how to solve equations, analyse measurements, use tables and graphs for some processes. These are just some examples showing how mathematics learning is important. For better illustration and visualization of mathematical concepts and methods, it is appropriate to use a modern technology. This provides dynamic teaching opportunities in math classes. GeoGebra is a free math software that is very useful for this purpose. This article shows some practical examples of the GeoGebra usage both as in mathematics education and as a support in solving technical problems.
STUDY OF MASS MOTION ON VIBRATING DEVICE: DESIGN AND PROCESS SIMULATION
Authors:   VSB-Technical University of Ostrava, Faculty of Mechanical Engineering, Institute of Transport, SLIVA ALES , SKACEL KAMIL ,   VSB-Technical University of Ostrava, Faculty of Mechanical Engineering, Institute of Transport, SIMHA MARTYNKOVA GRAZYNA ,   VSB-Technical University of Ostrava, Nanotechnology Centre, BRAZDA ROBERT ,   VSB-Technical University of Ostrava, Faculty of Mechanical Engineering, Institute of Transport, BROZOVA SILVIE ,   VSB-Technical University of Ostrava, Faculty of Materials Science and Technology, Department of Metallurgical Technologies, CIENCIALA SAMUEL ,   VSB-Technical University of Ostrava, Faculty of Mechanical Engineering, Institute of Transport
Published: March 2023

The simulation of mass motion using a vibrating device that was laboratory designed was the main idea of the work. The construction of an experimental vibrating device and the associated measuring station along with the measurement of dynamic properties of the vibrating device depending on preselected input parameters of the device of bulk material on this experimental model is presented. The simulation of the general behavior of particles on an experimental vibrating device at rotational frequencies of 20 Hz, 25 Hz and 35 Hz, and the rotation of contact vibrators at 30°, 45° and 75° by mass flow modeling using software ROCKY DEM is done. It was observed that the particles were moving at the fastest speed at 45° and at 35 Hz and that the top layers fall to the bottom especially at higher rotational frequencies, which may ultimately cause aeration of the particulate matter, thus reducing the angle of internal friction of the bulk material.
Effects of disaster victims’ social capital on trajectory types of posttraumatic stress disorder: Focused on latent class growth analysis
Authors:   center for social welfare research yonsei university, Jhone Jinho , Lee Sungkyu
Published: March 2023

The purpose of this study was to investigate the trajectory of posttraumatic stress disorder among disaster victims for four years, and examine the effect of social capital on the trajectory types of posttraumatic stress disorder. For this, this study used panel data from the Disaster Victim Panel Survey (wave 1-4) conducted by the National Disaster Management Research Institute, and classified trajectory types of posttraumatic stress disorder using latent class growth analysis. In addition, multinominal logistic regression analysis was conducted to examine socio-demographic, disaster victim, and social capital factors associated with latent groups. The main results are as follows. First, according to the trajectory of posttraumatic stress disorder among disaster victims, the latent groups were classified into three groups, which includes low-risk group (74.2%), moderate-risk group (20.4%), and high-risk group (5.5%). Second, the more level of social solidarity as one of social capital, the study participants were likely to be in a low-risk group rather than a high-risk group or a moderate-risk group. Third, the more having damage of human life, the study participants tended to be in a high-risk group than a low-risk group. Fourth, the worse the subjective health prior to the disaster, the study participants were likely to be in a moderate-risk group than a low-risk group. Based on these results, the study discussed social welfare practice and policy implications for prevention and intervention of posttaumatic stress disorder among disaster victims.
Antioxidant and Antiradical Properties of Rhabdosciadium anatolyi Flowers and Contents of Vitamin, Trace Element and Mineral
Authors: BAKIR Ahmet , EKİN Suat , FIRAT Mehmet
Published: March 2023

The aim of this study was to investigate the antioxidant and antiradical activity of the Rhabdosciadium anatolyi (R. anatolyi) flowers, an endemic plant grown in the Eastern Anatolia Region of Turkey, by determining the level of vitamins E and C, mineral (Ca, Na, Mg, P, K), and trace elements (Mn, Zn, Cu, Fe, V, Cr, Mo, Co, Sr, Pb, Ti, Tl, Sn, Cd, As). Within the scope of the study, mineral and trace element analyzes were carried out by ICP-OES and AAS, Vitamin E by HPLC, Vitamin C, total phenolic content, total flavonoid, antioxidant capacity, hydrogen peroxide, DPPH, ABTS, superoxide, hydroxyl and hemolysis of erythrocytes with phenylhydrazine, radical scavenging activity of the R. anatolyi flowers methanol extract were determined spectrophotometrically. According to the results, α-tocopherol, ascorbic acid, phenolic content, flavonoid content and total antioxidant activity of the R. anatolyi flowers were 3,99 ± 0,35 µmol kg-1, 346.27 ± 6.51 mg 100 g-1, 21.94 ± 0.37 mg gallic acid g-1, 5.60 ± 0.13 mg quercetin g-1 ve 29.65 ± 0.26 mM ascorbic acid g-1, respectively. Consequently, the mineral, trace element, vitamin E and vitamin C, total phenol and flavonoid levels in the R. anatolyi flowers were high, and the R. anatolyi flowers methanol extract effectively inhibited free radicals. From this point of view, it is thought that it can be used in the preventive treatment of many diseases that may be caused by free radical species and that these data will be a reference for other studies.
Innovative project “U-sport” as part of the implementation of the discipline “Applied physical culture and sports” in the Siberian Federal University
Authors:   Siberian Federal University, Institute of Physical Culture, Sports and Tourism, Bulgakova Olga V. , Konovalov Alexander S. ,   Siberian Federal University, Institute of Physical Culture, Sports and Tourism, Soboleva Natalya V. ,   Siberian Federal University, Institute of Physical Culture, Sports and Tourism, Bliznevsky Alexander Yu. ,   Siberian Federal University, Institute of Physical Culture, Sports and Tourism
Published: March 2023

The number of people systematically engaged in physical culture and sports, by decree of the President of the Russian Federation, should increase up to 85% by 2024. In this regard, one of the main and urgent tasks of the departments of physical education (culture) is the involvement of modern youth in physical education and sports classes of a different content or in technologies of managing this process, as well as maintaining motivation for a systematic approach to classes. Universities with a large contingent of students try to solve this problem in different ways and implement disciplines in physical culture and sports at a high professional level. The national program Digital Economy of the Russian Federation and rapidly changing information technologies urged the Institute and the University on the whole to conduct this experiment. The purpose of the work was testing of the effectiveness of the original digital board-form “U-sport” for getting the students involved in practical classes in the discipline “Applied Physical Culture and Sports” at the Department of Physical Culture of the Institute of Physical Culture, Sports and Tourism of the Siberian Federal University and considering the registration of students in all areas and specialties of full-time education. The working hypothesis was the assumption that the proposed solution would increase the motivation of students due to their choosing a physical education and sports specialization, an object and a territorial unit. The number of participants in the experiment of the Siberian Federal University, amounting to 12,880 people from 20 institutes and 125 teachers, shows that this is the largest study in the framework of one university in the field of physical culture and sports in recent years.
Adaptation of students from African countries to training at the universities of Siberia by means of physical culture and sport
Authors:   Tomsk State University of Control Systems and Radioelectronics, Tokmasheva Marina A. , Ilyin Alexander A. ,   Tomsk State University of Control Systems and Radioelectronics, Kapilevich Leonid V. ,   Tomsk State University
Published: March 2023

Foreign students are traditionally a part of the student body at major universities. Tomsk State University of Control Systems and Radioelectronics is one of the leading technical universities in Russia, where a significant number of students from foreign countries with climatic and geographical conditions that differ sharply from the Siberian region study. One of the priorities of the university when working with such students is to ensure not only social, but also their physical adaptation to training and living in Tomsk.
Functional reserves of students related to a special medical group for health reasons
Authors:   Kuzbass Humanitarian and Pedagogical Institute of Kemerovo State University, Konovalova Nina G. , Krasilnikova Elena V. ,   Kuzbass Humanitarian and Pedagogical Institute of Kemerovo State University
Published: March 2023

The relevance of this work is determined by the high prevalence of physical inactivity among students assigned to a special medical group for health reasons. The purpose of the study is to analyze the impact of physical education in a special medical group on the functional reserves of students’ body. A group of 20 first-year students was observed. Girls were engaged in physical culture during one school year. The examination at the beginning and end of the observation period included anthropometry, physiometry and functional testing. The heart rate and respiration rate in most girls exceeded the upper limit of the physiological norm; the vital capacity of the lungs did not reach the lower limit of the norm during initial testing. Functional tests showed low results. Statistically significant decrease heart rate and respiration rate increasing the lung capacity was found on re-examination. The results of the functional test have improved. The results obtained led to the conclusion that body’s functional reserves are reduced in students assigned to a special medical group for health reasons. Feasible physical culture classes are accompanied by the expansion of the body’s functional reserves.
Application of Space Images in Studies of Post-Fire Territories of the North-Western Caspian
Authors: Biarslanov A.B. , Dzhalalova M.I. , Gadzhiev I.R. , Asgerova D.В. , Osipova S.V.
Published: March 2023

The paper considers the experience of using space imagery materials from the Landsat 8 satellite to determine the values of the earth's surface temperatures according to the data of the thermal infrared channel. This experience is important in identifying the factors contributing to the emergence of steppe fires, assessing their consequences in the arid climate of the South of Russia. An analysis of multi-season space images (SI) for the period 2018-2020 was carried out covering the largest fires in terms of area located on the territory of the Tersko-Kuma lowland. SI were selected according to the principle - the scenes preceding the fire event and after it in different seasons of the year. Fires were visually identified at the SI and linear profiles were laid. Linear profiles at the SI were laid in such a way as to cover equally the territory subjected to fires and the non-burnt part of the landscape. The length of the profile was 1 km, the points were laid with an interval of one pixel (30 m) and the same width. The direction of the profile is from north to south, taking into account the uniformity of the relief, landscape and land use. As a result, for the analyzed segments, using QGIS3, the temperature of the underlying surface was measured for each point of the profile. It has been established that the temperature regime of the coastal strip differs from the continental part, which is associated with the proximity of water bodies, the hydromorphism of soil and vegetation, and the shift in vegetation periods. In the natural state before the fire, the vegetation largely levels the temperature background of the surface due to the partial shading of the surface and the formation of special microclimatic conditions in the near-surface layer. The data obtained from post-fire images indicate that the temperature differences between the burnt and unburned areas are maximum in summer (up to 4 °C) and persist throughout all warm seasons of the year, up to the onset of constant negative temperatures.
El principio de confianza legítima como fuente de la responsabilidad extracontractual del Estado: un análisis desde los títulos de imputación
Authors: Vargas Ruales Magda Elizabeth
Published: March 2023

Este trabajo de investigación estudia la defraudación al principio de confianza legítima en la responsabilidad extracontractual del Estado con el propósito de establecer el título de imputación que debe ser aplicable cuando esta se demanda bajo el medio de control de reparación directa, dado que el Consejo de Estado, en algunos casos, la ha enmarcado dentro de los títulos tradicionales de imputación de responsabilidad como la falla en el servicio o el daño especial; en otros, y a pesar de enmarcarse los hechos en ella, ni siquiera ha estimado la aplicación de dicho principio como fundamento de la declaratoria de responsabilidad estatal; y recientemente ha considerado que la defraudación de la confianza legítima es un título autónomo e independiente de imputación. Por lo mismo, este trabajo, desde un enfoque metodológico positivista-analítico, estudia las razones por las cuales dicha Corporación ha dado un tratamiento tan disímil a esta institución y las consecuencias que se derivan de ello para la protección de las expectativas legítimas y estados de confianza de los administrados, concluyendo que esta debe entenderse incluida dentro del título de daño especial y no debe considerarse un título autónomo
CONSTITUCIONALISMO CLIMÁTICO
Authors: Carvalho Délton Winter de
Published: March 2023

Os efeitos das mudanças climáticas, cada vez mais presentes na sociedade, exigem do Direito o enfrentamento e regulação das demandas global, regional e local por respostas à mitigação, à adaptação e às perdas e danos relacionadas a esse fenômeno potencializado no Antropoceno. Este artigo é oriundo de uma pesquisa bibliográfica e documental sobre a formação transnacional de um corpo de fundamentos constitucionais que permeiam diversos litígios climáticos ao redor do mundo. O objetivo central da pesquisa é a obtenção de um diagnóstico da influência recíproca entre múltiplas dimensões jurisdicionais e tradições jurídicas diversas. Como objetivo secundário, tem-se a reflexão crítica sobre esse corpo normativo transnacional que serve de base coerente para a formação de direitos e deveres fundamentais climáticos. Nesse contexto, ante uma perspectiva metodológica comparada, analisou-se, a partir do Constitucionalismo Ambiental, o surgimento e o reconhecimento do Constitucionalismo Climático alicerçado na tridimensionalidade do direito das mudanças climáticas, alicerçado nos regimes internacional, nacional e transnacional de tratamento das mudanças no clima e seus efeitos. Para ilustrar a importância prática de um constitucionalismo climático, foram explorados os paradigmáticos litígios climáticos Leghari v. Paquistão e Juliana v. USA que, em comum, refletem sobre o papel exercido pelas previsões constitucionais, como estratégia para enfrentar a fragilização de direitos fundamentais em razão dos efeitos negativos das mudanças climáticas.