bluuebunny/crossref_metadata_2025 huggingface dataset:
INDEPENDENT WORK ON DISTANCE FORM OF LEARNING: RESULTS OF STUDENT SURVEY
Authors:   Оles Honchar Dnipro National University, Nikolenko Liudmyla , Ilchenko Larysa ,   Оles Honchar Dnipro National University
Published: September 2021

The article substantiates the expediency of intensifying the independent work of students in view of the active introduction of distance learning in the educational process of higher education. The relevance of the chosen topic based on the analysis of domestic scientific sources is proved. Questionnaires were selected to investigate the attitude of students to the introduction of distance learning technologies (concluded by the authors) and to identify features of independent learning activities of students in distance learning (two adapted questionnaires, by O. Tsis and V. Lyaudis). The survey was conducted with the participation of second, third and fourth year bachelor students of the Department of Pedagogy and Special Education of Oles Honchar Dnipro National University. According to the results of the ascertaining stage of the questionnaire, the significance of information and computer technologies in the educational process of the specified university is clarified and the most relevant for effective provision of distance learning is determined among them. The gradual growth of the rating of the online format of education is outlined: from the perception of almost half of respondents as a modern alternative to traditional education – to take an almost dominant position in the case of their independent learning activities, especially for high school students. Some students even reported improved performance through new opportunities for self-study, and most respondents did not feel the negative impact of changing the form of study and increasing the amount of independent work. At the same time, there were obstacles to the effectiveness of self-study in the form of lack of information skills in a third of respondents and the skills of organizing independent work in a quarter of respondents. According to the results of the survey, the lack of the proper level of self-regulation of educational activities, volitional and motivational characteristics of the individual in the vast majority of bachelors. The necessity of reorganization of the content, character, ways of independent work of students depending on the course of study for the purpose of formation of personal and professional competences of applicants of higher education in the field of special pedagogy is confirmed.
CONCEPTION OF DEVELOPMENT OF SOCIAL MATURITY OF FUTURE TEACHER
Authors:   Volodymyr Vynnychenko Central Ukrainian State Pedagogical University, Haleta Yaroslav , Semak Alina ,   Donetsk National Medical University
Published: September 2021

The scientific prerequisites for studying the problem of social maturity are justified by the results of the analysis of social and cultural trends in the development of modern pedagogical education, the integration essence of pedagogical activity and the personality of the teacher make it possible to conclude that the theoretical search for effective ways of developing the social maturity of the future teacher is conditioned not only by educational practice, but by objective needs of society as well. In our thesis, we consider the concept of development of social maturity of the future teacher as the unity of purpose, essence, principles, structure, content and the result of its implementation in the pedagogical educational process. Methodological basis of the concept of development of social maturity at the philosophical level are the ideas of the active essence of man, his role in solving social, personal problems, the idea of natural and social integrity. The laws of the dialectic of unity and struggle of opposites, the transition of quantitative changes to qualitative, the principles of objectivity, determinism, development, systemicity and interaction, which allowed: to reveal the dialectic of the pedagogical educational process, to the implementation of the concept of development of social maturity; to identify contradictions, relationships of quantitative and qualitative changes inherent in the development of personality, at the stage of professional training in a higher education institution; to study the patterns of development of subjects of pedagogical education in the context of updating the information culture of society, taking into account the psychological patterns of all types of activity. The leading methodological foundations of the research concept are systematic and activity approaches that allowed to consider social maturity as an integral system, to identify its elements, to define the subordinate basis of interaction, to establish the internal and external relations and interdependence between them, to consider each element as a system, and «social maturity» as a subsystem of system education of a higher level – «maturity».
COMPONENT STRUCTURE IN THE ORGANIZATION ОF MORAL BEHAVIOR EXPERIENCE FOR SENIOR ADOLESCENTS
Authors:   H. S. Skovoroda Kharkiv National Pedagogical University, Huzenko Nataliia
Published: September 2021

The problem of moral behavior experience for adolescents is quite sharp. The difficulty of moral behavior experience for older adolescents involves the separation in the pedagogical reality the phenomenon ‘moral behavior experience’ and its component clarification. Some issues of adolescents’ moral behavior allowed us to define our own concept ‘moral behavior experience’ as a system of conscious actions and deeds, formed in the process of acquiring knowledge about morality, moral norms, acquiring skills for their practice usage and skills of moral actions by emotional and volitional efforts. The article clarifies the component structure in the organization of moral behavior experience for older adolescents. Its clarification is necessary for understanding the process of moral behavior experience development. The paper identifies the components of moral behavior experience for older adolescents: motivational and valuable, cognitive and interesting, practical and active, personal and reflexive ones. The article describes each component separately in details. In the work the structure of moral behavior experience for older adolescents are characterized with the following components. The motivational and valuable component is represented by motivation, interest, values, moral feelings and attitudes, moral beliefs. The cognitive and interesting component is represented by knowledge of moral norms and behavior rules. The practical and active component is represented by personal ability to communicate, leadership, behavioral self-regulation. The personal and reflexive component is represented by personal traits, reflection, personal moral qualities, self-esteem and self-analysis in moral behavior. In the article the prospects of determining pedagogical conditions for moral behavior experience for older adolescents are clarified to prevent and avoid bullying. Undoubtedly, the elucidation of the component composition in the structure of the experience of moral behavior is necessary to understand the process of its formation. In the work in the structure of the experience of moral behavior of older adolescents, the following components were identified: motivational-value component (motivation, interest, values, moral feelings, relationships, moral beliefs); cognitive component (knowledge of moral norms and rules of conduct); practical-activity component (personality's ability to communicate, leadership, self-regulation of behavior), personality-reflexive component (personality traits, reflection, moral qualities of personality, self-esteem and self-analysis of moral behavior).
METHODOLOGICAL CULTURE OF THE UNIVERSITY TEACHER AS A COMPONENT OF IT’S PROFESSIONAL AND PEDAGOGICAL CULTURE: FORMULATION OF THE PROBLEM
Authors:   Kyiv National University of Trade and Economics, Kaida Nadia , Pasyk-Kosarieva Nataliia ,   Kyiv National University of Trade and Economics, Rozum Antonina ,   Kyiv National University of Trade and Economics
Published: September 2021

The article focuses on the problem of forming of the university teacher’s methodological culture. Modernization and reorganization of the national higher education system requires teachers who have deep professional and methodological knowledge, have a high level of formation of methodological culture, have an active professional position and a creative style of activity. The analysis of approaches of scientists concerning essence of methodological culture is implemented. The author's position on the interrelation and interdependence of the formed high level of teacher’s methodological culture and the teacher’s readiness to carry out it’s methodological activity at a high level is substantiated. The formation of the methodological culture of freelance teachers involves the content of professional training of future teachers on the formation of values necessary for interactive teaching and the appropriate orientation of the individual, self-improvement, self-determination, and at the same time focuses on innovative experience for successful implementation as, in particular, methodological activities. and in general the professional pedagogical activity of the teacher. In the methodical activity of the teacher of ZVO it can be reflected in real practice of professional preparation of students: new methods of teaching, new ways of diagnostics of quality of training of students, development and use in initial process of author's methodical products, etc. Also, formed at a high level methodological culture of the teacher will be reflected in pedagogical communication in the system «teacher - student (students)», for example, in finding new communication tasks, new means of activating interpersonal communication of students during classes, new forms of student communication. process of group work, pedagogical interaction of the teacher with students on the basis of co-creation and commonwealth. In the personal sphere it is shown in definition by the teacher of individual ways of the professional development, construction of the program of self-improvement. As a result, the teacher, basing his practical activity on the basis of creative thinking, creative approach to teaching, self-improvement, begins to play an active role in regulating their professional activities.
STUDENTS’ INDEPENDENT STUDY AS A COMPONENT IN THE PROFESSIONAL TRAINING OF FUTURE SPECIALISTS
Authors:   National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Lomakina Larysa
Published: September 2021

The article highlights the importance of independent study for the development of personality, assimilation and exchange of experience, learning process, professional development of future specialists. Scientific and pedagogical literature devoted to the peculiarities of the organization of students’ independent study, the problem of choosing forms and methods, types of students’ independent study, taking into account the necessary specifics of their professional formation, were analyzed. The approaches of scientists to the interpretation of the concept of «independent study» have been revealed. Higher education is gradually but steadily moving from the transfer of information to the management of educational and cognitive activities, the formation of students’ independent study skills. According to the Regulations on the organization of the educational process in higher educational institutions, students’ independent learning is the main means of mastering the educational material in the time free from compulsory educational activities. Under independent educational activity we mean a type of activity that can orient the student to self-improvement and self-development of professional knowledge and skills that will ensure the formation of future specialist’s professional competencies. Independent extracurricular study is seen as a means of forming the students’ cognitive abilities, in the process of which the student gradually turns into a self-learning subject. The article considers the influence of extracurricular independent work on the training of a competitive specialist. The reasons that determine the necessity and importance of students’ independent study in the learning process are described. It was concluded that students’ independent study, organized taking into account pedagogical conditions, gives a significant positive effect in the formation of the professional competence of future specialists. The example of organization of extracurricular independent work in teaching English is given in this article. In conclusion, it should be emphasized that organizing students’ independent study at the university is a complex and multifaceted process. It includes both the formation of self-motivation and self-organization of future specialist, and the readiness of the teaching staff for this type of activity. The results of the practical activities of teaching a foreign language at Igor Sikorsky Kyiv Polytechnic Institute showed that the independent learning of students, organized taking into account the pedagogical conditions, gives a significant positive effect in the formation of professional competence, that is, it is an important component in the professional training of future specialists.
THEORETICAL AND METHODOLOGICAL FUNDAMENTALS OF SPORTS TOURISM IN THE TRAINING OF FUTURE SPECIALISTS
Authors:   Kryvyi Rih State Pedagogical University, Petrova Alona
Published: September 2021

The popularity of sports tourism among other types of leisure is growing every year as a result of promoting a healthy and active lifestyle, finding ways to motivate, self-development and challenge yourself to overcome internal fears and physical obstacles. Today there are no generally accepted common interpretations of the concepts of sports and sports and health tourism, which is the relevance of our study. There were active discussions among scientists around the world on the formation of the concept of sports tourism. Currently, sports tourism is considered in three aspects. Active sports tourism is a trip for the purpose of direct participation of tourists in sports competitions, and the tourist component plays a secondary role as an additional service. Event (passive) sports tourism is the passive participation of tourists in sports competitions as fans or observers. Cognitive sports tourism, the purpose of which is to visit excursions to sports museums, stadiums, thematic accommodation and catering establishments. Ukrainian and Russian scientists, in particular I. Zorin, V. Kvartalnov, O. Kolotukha, A. Konokh, propagate the idea that sports tourism is a separate sport, which is based on competitions on tourist routes laid in the natural environment and includes overcoming various natural obstacles with the use of special techniques and equipment. However, in the process of internationalization and globalization of tourism education it is very important to find a common ground on the educational component of training specialists in sports tourism and to form an optimal definition in three dimensions: sport, tourism and academic discipline. During our research it was found out that the training of specialists should be carried out in one of three areas: training of specialists (instructors) in sports tourism; training of sports and tourism guides; training of organizers of sports events in the context of event tourism. Currently, the direction of training specialists in the organization of sports events in the format of event tourism remains insufficiently studied in our country. Sports tourism is an integral part of global tourism and now there are two different interpretations of this concept, which are actively discussed in the scientific world: 1) sports tourism as a tourist trip to the destination to participate in sports competitions in any sport; 2) sports tourism as a separate kind of sport. In the perspective of research, the following unresolved issues still remain: the introduction of integration educational processes between the sports event industry and the ability to form tourism products in the relevant field.
INNOVATIVE TECHNOLOGIES OF COMPETENCE ORIENTED TRAINING OF FUTURE TEACHERS OF MATHEMATICS FOR TECHNOLOGY IN THE CONDITIONS IN PROFILE SCHOOL
Authors:   Zhytomyr Technological College of Kyiv National University of Construction and Architecture, College of Kyiv International University, Rudik Anna
Published: September 2021

In the article the substantiation of selection of innovative pedagogical technologies and application for competence-oriented preparation of future teachers of mathematics for technologicalization of educational process in the conditions of profile school is carried out. Innovative educational and information technologies are analyzed, which comprehensively contribute to the formation of professional readiness of future mathematics teachers to the technologicalization of the educational process in the profile school in the system of professional training in higher education institutions. Promising innovative pedagogical, educational and information technologies that acquire further relevance in the educational environment are identified. It is proved that the introduction of training courses for future mathematics teachers on the use of innovative educational technologies in specialized schools provides a favorable educational environment for the formation of research competencies, including the use of mathematical analysis in modeling experiments and mathematical statistics. Analysis of the results of experimental research confirms the effectiveness of experimental learning using innovative educational and information technologies for the formation of professional readiness of future masters of mathematics to technologize the educational process in a specialized school. The introduction of training courses for future mathematics teachers on the use of innovative educational and information technologies in specialized schools provides a favorable educational environment for the formation of research competencies, including the use of mathematical analysis in modeling experiments in specialized schools. Analysis of the results of experimental research confirms the effectiveness of experimental learning using innovative educational and information technologies for the formation of professional readiness of future masters of mathematics to technologicalize the educational process in a specialized school.
INTERDISCIPLINARY INTEGRATION IN THE PROFESSIONAL TRAINING OF FUTURE TEACHERS OF UKRAINIAN LANGUAGE AND LITERATURE: LEVELS AND WAYS OF REALIZATION
Authors:   T.Н. Shevchenko National University «Chernihiv Colehium», Lilik Olha
Published: September 2021

The author of article analyzes the peculiarities of the professional training of future teachers of Ukrainian language and literature on the base of interdisciplinary integration. Lilik O. O. explores the problem of the definition of integration in scientific literature, she describes different levels and ways of interdisciplinary integration in vocation training. The author of the article considers interdisciplinary integration within the framework of professional training of future teachers of Ukrainian language and literature at three levels, namely: as integration of content (level of separate disciplines (historical-literary and theoretical-literary, as well as pedagogical and methodical) and educational material); as an integration of methods of activity (ability and skills to operate with material during training, as well as further professional activity); as an integration of values ​​and worldviews (the level of personal and professional worldview of students), the result of which are formed general and professional competencies. The first way is interdisciplinary integration within the classroom (lectures, practical, and laboratory). The second way is integration within the independent work of students. The third way for interdisciplinary integration is the research activities of students, including the writing of term papers and qualifications, which can be performed at the intersection of several scientific and educational disciplines. The fourth way of implementing interdisciplinary integration is the students’ participation in additional forms of organization of the educational process - special seminars, trainings, workshops, master classes, round tables, which can be held within grant activities or be a form of self-education of future vocabulary teachers. The fifth way is educational work at the faculty or the university in general, which involves the organization of various activities. On the basis of the conducted researches Lilik O. О. comes to the conclusion that interdisciplinary integration can be a catalyst for the educational process in higher education, provide comprehensive and thorough training of future teachers of Ukrainian language and literature for professional activities, as it covers a wide range of issues: from theoretical knowledge and practical skills to their personal and professional worldview.
METHODS OF FORMATION OF PROFESSIONAL COMPETENCE OF FUTURE MASTERS OF PHARMACY BY MEANS OF INNOVATIVE EDUCATIONAL TECHNOLOGIES IN CONDITIONS OF CONDITIONS
Authors:   National Medical University named after O. O. Bogomolets, Dovzhuk Victoria
Published: September 2021

The article highlights the rationale for the development and implementation of methods for the formation of professional competence of future masters of pharmacy by means of innovative educational technologies in the context of European integration changes. The analysis of philosophical, medical, pharmaceutical and psychological-pedagogical literary sources on the problems of professional training of future specialists in the pharmaceutical industry is carried out; pedagogical experience of universities of Central and Eastern Europe and integration in the conditions of higher pharmaceutical education of Ukraine; analysis of scientific publications of world level of development of management of higher pharmaceutical education; pedagogical observation; pedagogical experiment; questionnaires; testing; surveys, analysis of problem-based learning outcomes and group work. It is established that the introduction of modern technologies and educational innovations in the training of masters of pharmacy in universities of Central and Eastern Europe is carried out in the context of European integration, development of the Eastern Partnership in the European Union and associate members and partners. Pedagogical innovation is based on the use of innovative technologies (both pedagogical and informational and sectoral) in educational processes to improve their efficiency and quality assurance in higher education. According to the results of the study to improve the educational process of training and professional competence of future masters of pharmacy by means of innovative educational technologies in the context of European integration changes developed and implemented methods and scientific and methodological support - a portfolio of scientific and methodological complexes for classroom learning and remote access students on-line using a remote access platform. To determine the effectiveness of the organization of experimental training conducted on-line, the analysis of the effectiveness of solving cases of model professional situations, test control of student achievement and qualimetric questionnaires. The positive dynamics of students' academic achievements in the formation of professional competence of future masters of pharmacy has been established.
PERCEPTIONS OF TEACHERS AND PRINCIPALS ON THEIR ADVERSITY QUOTIENT IN RELATION TO THEIR JOB PERFORMANCE
Authors: Rommel P. Manzon
Published: September 2021

The study determined the teachers’ perception of principals’ adversity quotient as correlate of their job performance. There are four research questions guided the study. A correlational survey research design is adopted for the study. The population of the study consisted 4,370 teachers in the public schools. A sample of 875 teachers is drawn using a multistage sampling procedure. Two sets of developed instrument titled Principals’ Adversity Quotient Scale (PAQS) and Teachers’ Job Performance Scale (TJPS) which are validated by three experts are used for data collection. The instruments are face validated by three experts and subjected to internal consistency test using Cronbach alpha method which yielded 0.85, 0.78, 0.75 and 0.74 for the four sections of PAQS with overall coefficient of 0.72 while 0.84 was obtained for the TJPQ. Pearson’ Product Moment Correlation was used to analyze data for the study. Findings of the study indicated that a substantial positive relationship exists between teachers’ perception of principals’ control over adversity, principals’ ownership of the outcome of adversity, principals’ endurance and their job performance. Based on the findings, it was recommended among others that secondary school principals in the state should constantly predict and take charge of difficult situations and foster adaptive preparedness in order to stimulate teachers’ sense of confidence which will stimulate their job performance. Principals should as much as possible try not to allow difficult situations in the school to extend or “reach into” and affect other areas of the school and beyond. They should learn to put difficult situations under control by keeping the reach at bay. This can be essential in inspiring teachers towards improved job performance.
KEYWORDS: Adversity, Adversity quotient, job performance, job accomplishment, principals’ functions and responsibility
MEWUJUDKAN MANUSIA INDONESIA YANG UNGGUL MELALUI PEMENUHAN HAK-HAK ANAK DALAM KELUARGA
Authors: Sholihah Hani
Published: September 2021

Anak adalah generasi penerus bangsa yang akan melanjutkan tugas dan fungsi estafeta kehidupan generasi sebelumnya. Seorang anak mempunyai hak yang harus dipenuhi dan dilindungi. Akan tetapi, dalam kenyataan banyak terjadi kasus kekerasan terhadap anak, yang tidak jarang pelakunya adalah orang yang seharusnya melindungi, yaitu orang tua. Pola asuh dalam keluarga sangat berpengaruh terhadap pembentukan watak dan karakter anak. Oleh karena itu, tulisan ini bertujuan untuk mengkaji upaya mewajudkan manusia Indonesia yang unggul melalui pemenuhan hak-hak anak dalam keluarga. Dengan metode penelitian pustaka dan pendekatan yuridis normatif, sumber data yang digunakan adalah sumber data sekunder berupa bahan-bahan hukum, baik yang primer, sekunder, maupun tertier. Hasil penelitian menunjukkan bahwa mewujudkan manusia Indonesia yang unggul dapat dimulai dari pemenuhan hak-hak anak dalam keluarga. Penggunaan pola asuh keluarga yang baik, yaitu pola asuh demokratis (authoritative) akan membentuk watak, karakter, dan kompetensi anak yang baik dan unggul, sehingga menjadi manusia Indonesia unggul yang siap melanjutkan estafeta kepemimpinan bangsa di masa yang akan datang.
PENGARUH AKTIVITAS SISWA DALAM BEROLAHRAGA SELAMA MASA PANDEMI TERHADAP KEMAMPUAN SISWA DALAM BERBAHASA ARAB
Authors: Hidayah Nurul , Setiawan Arif
Published: September 2021

Covid 19 membuat siswa tidak memiliki aktivitas di luar rumah, sehingga siswa lebih banyak menghabiskan waktu di depan layar daripada aktivitas. Kurangnya aktivitas tidak hanya membuat siswa tidak sehat tetapi juga melemahkan prestasi akademik mereka karena lebih fokus pada bermain gadget. Metode penelitian ini merupakan metode survei untuk melihat pengaruh kedua variabel tersebut. Penelitian ini menunjukkan bahwa anak yang memiliki aktivitas tinggi dalam olahraga dapat memiliki kemampuan berbahasa Arab yang baik. Hal ini dikarenakan Siswa yang aktif akan memaksimalkan indranya untuk menjelajahi dunia luar sehingga membuatnya mampu menyelesaikan tugas-tugas belajar yang kompleks dan mendukung perkembangan kognitif dan bahasa. Siswa yang memiliki aktivitas tinggi dalam berolahraga lebih bugar dan kuat sedangkan anak yang belajar bahasa sejak usia sekolah dasar mampu membuat otaknya menerima lebih banyak kosakata. Sehingga kedua variabel tersebut tidak hanya saling mempengaruhi sebesar 87,7% tetapi juga saling mendukung untuk menjadikan anak lebih pintar dan sehat.
EFEKTIVITAS MEDIA POSTER DALAM MENINGKATKAN PENGETAHUAN PROTOKOL KESEHATAN DI PAPUA
Authors: Qomarrullah Rif’iy , Siahaan Jonni , Sawir Muhammad , Wulandari S Lestari
Published: September 2021

Virus Covid-19 merupakan mutasi genetik dari SarsCoV-2, dan sudah menyebar ke berbagai negara penjuru dunia, salah satunya adalah di Papua Indonesia. Artikel ini membahas bagaimana efektivitas media poster dalam meningkatkan pengetahuan dan mempromosikan protokol kesehatan dalam masa pandemi. Penelitian ini merupakan rancangan eksperimental dengan one group pretest posttest, pengambilan data ini telah dilaksanakan melibatkan 10 orang responden di Dinas Pendidikan Kabupaten Mimika Provinsi Papua. Instrumen dalam penelitian ini menggunakan kuesioner dan wawancara. Kemudian, teknik analisis data menggunakan paired sample t-test. Skor rata-rata pretest pada pengetahuan awal adalah 30,00%, sedangkan posttest skor rata rata pengetahuan 80,00%, hasil analisa bivariat menyatakan ada perbedaan yang signifikan antara nilai pretest dan posttest pada pengetahuan protokol kesehatan melalui media poster dengan nilai p value pengetahuan 0,0001. Oleh karenanya, media poster sangat efektif dalam meningkatkan pengetahuan tentang protokol kesehatan.
PENGEMBANGAN KARAKTER ANAK BERBASIS PENDIDIKAN ISLAM NON FORMAL PADA DAERAH RAWAN KRIMINAL DI LAMPUNG TIMUR
Authors: Hasanah Uswatun
Published: September 2021

Penurunan angka kriminalitas terjadi pada daerah Lampung Timur yang memiliki beberapa wilayah rawan criminal. Hal ini mengindikasikan adanya kesuksesan dari strategi pengembangan karakter anak khususnya pada Pendidikan non formal. Penelitian ini merupakan penelitian kualitatif berjenis studi kasus yang dikumpulkan dari sumber data pada daerah rawan criminal di Lampung Timur. Hasil penelitian menunjukkan bahwa penurunan tingkat kriminalitas di Lampung Timur dipercaya dipengaruhi secara dominan oleh pengembangan karakter yang dilakukan oleh Lembaga islam non formal, yakni Majlis taklim, Madrasah Diniyah, TPA, dan pesantren. Selain itu, sinergi antara tokoh agama, penyuluh agama dan keluarga juga menjadi kunci dari pelaksanaan penanaman Pendidikan karakter anak di Lampung Timur
The Art of Actualization
Authors: Guynn Michael
Published: September 2021

Two personality psychologists, Abraham Maslow and Carl Rogers, used the concept of self-actualization in their theories of personal growth (Schultz & Schultz, 2019). Rogers believed all people have an actualization tendency, a desire to seek higher forms of cognitive complexity (Kim, 2018). Similar viewpoints may be found in the ancient philosophy of Taoism as well as the writings of Plato (Lin, 2011; Bloom, 1968). Also in line with Roger’s theory are the findings that the brain naturally seeks perceptual unity (Griffith & Davidson, 1966; Hunt & Schooler, 2019). Brain areas like the dorsolateral prefrontal cortex and the default mode network are tied to levels of self actualization (Forrest, 2001; Yangmei et al., 2017). Maslow believed self actualized people have peak experiences such as moments of deep connection with the universe (Yaden et al., 2017). Lowering one’s latent inhibition may be a way to increase the frequency of peak experiences (Carson, Higgens, & Peterson, 2003).
Study on the erosion wear in pipe fittings
Authors:   School of Mechanical Engineering, Yangtze University, Jingzhou, China, Zhang Manlai , Zhang Qin ,   School of Mechanical Engineering, Yangtze University, Jingzhou, China, Wang Xiuwu ,   Faculty of Chemical Engineering Kunming, Kunming University of Science and Technology, Yunnan, China, Zhou Zhihong ,   School of Mechanical Engineering, Yangtze University, Jingzhou, China, Liao Ruiquan ,   The Branch of Key Laboratory of CNPC for Oil and Gas Production, Yangtze University, Jingzhou, China
Published: September 2021

In the pipeline system for slurry, local erosion wear failure has become the main damage mechanism of pipe in the fracturing operations of oil-gas engineering. Computational Fluid Dynamics simulation is performed to determine the evolutionary process of erosion wear in tubing connector, which is the resistance of pipeline system, and a new way to predict the pipeline longevity is provided. Based on the Euler equation, solid particle concentration in the slurry and interphase momentum exchange are included in the liquid flow equations due to the influence of dense particle on slurry (slurry is a two-phase flow), and the particle trajectory were calculated in the Lagrange frame by analyzing the forces from the interaction of liquid and particle and particles impact. With the erosion damage model, the erosion rate/depth in the connector was calculated to reconstruct the mesh model of shoulder with 5 tori. Torus 1 is closest to axis while torus 5 is on the outmost wall of the connector. During the erosion event, greatest erosion and hence surface deformation occurs on tori 1 and 2, and this affects the surrounding flow and particle movement. After 10 hours of erosion, there was a dramatic drop in the maximum erosion rate, which illustrated a conservative prediction for pipeline service life if the initial erosion rate was used. An erosion experimental setup was also performed to identify the weight loss and erosion characteristic of the inner surface with erosion time of 55 hours. It was observed that the erosion simulations provided relative errors within 18% for erosion length and weight loss compared to the experimental values and a closed form equation for the erosion rate was proposed to predict the erosion life of tubing connector
Development of heavy truck models and their effects on girder bridges
Authors:   School of Civil Engineering, Chongqing jiatong University, Chongqing ,40074, the People's Republic of China, Liu Lang , Zhang Lexian ,   School of Civil Engineering, Chongqing jiatong University, Chongqing ,40074, the People's Republic of China, Wang Jie ,   School of Civil Engineering, Chongqing jiatong University, Chongqing ,40074, the People's Republic of China, Yang Hong ,   School of Civil Engineering, Chongqing jiatong University, Chongqing ,40074, the People's Republic of China
Published: September 2021

The traffic on highway bridges has been increasing in both volume and magnitude, which even has become one of the main reasons leading to damages and collapse of bridges. Most of the existing regulations for overloading checking are carried out based on various limits of gross vehicle weights and axle loads. However, the results of relevant researches show that weight is only a potential factor but not the dominating factor in threatening the safety of bridges. In this study, the concept of load-effect-based heavy truck is proposed for overloading checking, and then three years of WIM data were collected and used to develop heavy truck models for each truck type, based on the understanding of the characteristics and configurations of heavy trucks as well as the distribution of their main parameters. Furthermore, the typical heavy truck models selected and their possible combinations are applied to a simply supported pre-stressed concrete T-beam bridge model with three loading levels, considering one-lane, two-lane and three-lane loaded respectively, then the induced load effect, deflection and stress are discussed for 20 loading cases. The results show the bending moment caused by heavy trucks moving on multiple lanes is 1.6 times the value of the standard truck model in Chinese specification, and the eccentric loading due to a very heavy vehicle moving on single lane usually lead to more severe effect.
Numerical investigation of lagrangian coherent structures in steady rotation vortex shedding control
Authors:   Mechanical Engineering Department, University of Engineering and Technology, Taxila,  47050, Pakistan, Hashir Muhammad , -ur-Rehman Tauseef ,   School of Mechanical Engineering, Gwangju Institute of Science and Technology (GIST),  Buk-gu, Gwangju 61005, Republic of Korea, Sohail Aamir ,   Mechanical Engineering Department, University of Engineering and Technology, Taxila,  47050, Pakistan, Javaid Muhammad Yasar ,   Department of Mechanical engineering technology, Government College University  Faisalabad (GCUF), 38000, Pakistan, Ambreen Tehmina ,   School of Mechanical Engineering, Kyungpook National University, 80 Daehakro, Bukgu  Daegu, 41566, South Korea, Anwar Muhammad Arsalan ,   Mechanical Engineering Department, University of Engineering and Technology, Taxila,  47050, Pakistan, Shah Tayyab Raza ,   Mechanical Engineering Department, University of Engineering and Technology, Taxila,  47050, Pakistan
Published: September 2021

In this paper, vortex shedding and suppression are numerically investigated as autonomous and non-autonomous dynamical systems respectively. Lagrangian coherent structures (LCSs) are used as a numerical tool to analyze these systems. These structures are ridges of Finite time Lyapunov exponent (FTLE) which act as material surfaces that are transport barriers within the flow. Initially, the utility of LCSs is explored for revealing the coherent structures of these systems. Finally, an active flow control method, steady rotation is applied to the non-autonomous dynamical system with different speed ratios to mitigate vortex shedding magnitude. This will eventually turn the system into an autonomous system. Fixed saddle points, separation profiles essentially as unstable time variant manifolds attached to cylinder wall and evolution of other unstable manifolds with variant speed ratios are analyzed with reference to LCSs. It is revealed that speed ratio of 2.1 fully suppresses the von Karman vortex street at Reynolds number of 100 and system turns into an autonomous dynamical system with fixed saddle points and time-invariant manifolds.
Performance and Emission analysis of Multi-Cylinder Common Rail Direct Injection Diesel Engine Powered with Blends of Tyre Pyrolysis Oil-Ethanol-Diesel
Authors:   Department of Mechanical Engineering, Sanjay Ghodawat University, Kolhapur, Maharashtra,  India., S. V. Khandal , khan T.M. Yunus ,   Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box  9004, Abha, 61413, Asir, Kingdom of Saudi Arabia, Badruddin Irfan Anjum ,   Department of Mechanical Engineering, College of Engineering, King Khalid University, Abha  61421, Kingdom of Saudi Arabia., Kamangar Sarfaraz ,   Department of Mechanical Engineering, College of Engineering, King Khalid University, Abha  61421, Kingdom of Saudi Arabia., Saleel C.  Ahamed ,   Department of Mechanical Engineering, College of Engineering, King Khalid University, Abha  61421, Kingdom of Saudi Arabia., Baig Maughal Ahmed Ali ,   Department of Mechanical Engineering, CMR Technical Campus, Hyderabad, India, Ahmed N J Salman ,   Department of Mechanical and Industrial Engineering, Sultan Qaboos University, Muscat,  Oman.
Published: September 2021

This paper mainly focuses on optimal replacement of diesel by Tyre Pyrolysis oil-Ethanol blends to run a common rail direct injection (CRDI) multi cylinder engine and to compare the results with neat diesel fuel operation results at 1500 rpm. The engine was operated at different loads and speeds. From the experimental study, decrease in brake thermal efficiency (BTE) and oxides of nitrogen (NOx) emission with increase in carbon monoxide (CO), hydrocarbon (HC), and smoke emission was observed for blends as compared to diesel fuel. Further, it was also observed that increase in speed from 1200 rpm to 1800 rpm yielded higher BTE with decrease in CO, HC and smoke emission. But slightly increase in NOx, peak pressure (PP) and heat release rate (HRR) was reported at higher speed as compared to lower speeds. Beyond engine speed of 1800 rpm, knocking was observed.
A thermomechanical model for the analysis of disc brake using the finite element method in frictional contact
Authors:   Department of Mechanical Engineering, University of Sciences and the Technology of Oran , L.P 1505 El -Mnaouer, USTO 31000 Oran, Algeria, Belhocine Ali , Abdullah Oday Ibraheem ,   System Technologies and Mechanical Design Methodology Hamburg University of  Technology, Hamburg Germany
Published: September 2021

In this work, numerical simulations of the transient thermal and the static structural analysis were performed here sequentially, with the coupled thermo-structural method. Numerical procedure of calculation relies on important steps such that the CFD thermal analysis has been well illustrated in 3D, showing the effects of heat distribution over the brake disc. Three different brake disc materials were selected in this simulation and a comparative analysis of the results was conducted in order to derive the one with the best thermal behavior. Finally, the resolution of the coupled thermomechanical model allows us to visualize other important results of this research such as; the deformations, and the equivalent Von Mises stress of the disc, as well as the contact pressure of the brake pads. Following our analysis and the results we draw from it, we derive several conclusions. The choice allowed us to deliver the best suitable of the brake rotor to ensure and guarantee the good braking performance of vehicles.
Study on Heat Sources of Horizontal Lathe Machine by Using Inverse Method
Authors:   Faculty of Mechanical Engineering, Hung Yen University of Technology and Education,  Khoai Chau District, Hung Yen Province, Vietnam., Ngo Thi-Thao , Wang Chi-Chang ,   Department of Mechanical and Computer-Adided Engineering, Feng Chia University, No.  100 Wenhwa Rd., Seatwen., Taichung, Taiwan 40724, R.O.C., Chang Ming-Lun ,   Department of Mechanical and Computer-Adided Engineering, Feng Chia University, No.  100 Wenhwa Rd., Seatwen., Taichung, Taiwan 40724, R.O.C., Than Van-The ,   Faculty of Mechanical Engineering, Hung Yen University of Technology and Education,  Khoai Chau District, Hung Yen Province, Vietnam.
Published: September 2021

Thermal has significantly effect on high speed machine tools. When temperature growing up, it often causes processing errors and further reduces product quality. This paper aims to investigate magnitude of heat sources and temperature distribution in a horizontal lathe based on inverse method. In present thermal model, there is not only consideration of spindle but also analyzing relative structures. Simulated and experimental temperatures are used as input data to predict heat sources and temperature field. Effects of speed, number measured points, measurement errors and measured distance on predicted results are analyzed. Results indicate that this inverse method can accurately estimate the heat sources based on two measured temperatures at front and rear outer rings. The trend of estimated heat sources is then compared to measured load rate. Results herein are useful information for designing horizontal lathe spindle and reducing thermal errors.
A Numerical Study of the effect of Bolt Thread Geometry on the Load Distribution of Continuous Threads
Authors:   Department of Mechanical, Materials and Manufacturing Engineering, University of  Nottingham Malaysia, 43500, Semenyih, Malaysia, Fathalla Abdulla Sherif Mahmoud , Farid Ali Akhavan ,   Department of Mechanical, Materials and Manufacturing Engineering, University of  Nottingham Malaysia, 43500, Semenyih, Malaysia, Moezzi Reza ,   Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of  Liberec, Czechia, Koloor Seyed Saeid  Rahimian ,   Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of  Liberec, Czechia
Published: September 2021

Load distribution has been studied extensively for ISO thread, but the load distribution on power screw threads, specifically ACME and Square threads, has not been studied yet. In this article, axisymmetric two-dimensional and three-dimensional Finite Element Analysis have been conducted on bolts with different sizes and thread geometries to examine the effect of the thread geometry on the load distribution. The thread geometries were studied with ISO, ACME, and Square threads attention. The sizes used are from the ISO coarse series. In order to investigate on the effect of bolt thread geometry, several simulations have been performed. The two-dimensional simulation results have shown reliable performance in determining the load distribution behaviour when the thread geometry is modified. Moreover, the results agreed with the three-dimensional simulation outcomes regarding the load distribution behaviour when the size is varied.
Numerical study for the spray characteristics of diesel engine powered by biodiesel fuels under different injection pressures
Authors:   Department of Mechanical Engineering, University of Al-Qadisiyah, Al-Qadisiyah, Iraq, Al-Dawody Mohamed F. , Al-Farhany Khaled A. ,   Department of Mechanical Engineering, University of Al-Qadisiyah, Al-Qadisiyah, Iraq, Hamza Naseer H. ,   Department of Mechanical Engineering, University of Al-Qadisiyah, Al-Qadisiyah, Iraq, Hamzah Dhafer A. ,   Department of Mechanical Engineering, University of Al-Qadisiyah, Al-Qadisiyah, Iraq
Published: September 2021

Great attention is directed towards the study of the spray phenomena theoretically and experimentally due to its dramatic effect on the combustion process that occurred in an internal combustion engine, in particular, the diesel engine. The spray macroscopic characteristic of diesel engines fueled with two different biodiesel fuels in addition to nominal diesel under various injection pressures has been investigated numerically in this work. The selected biofuels are Rapeseed methyl ester (RME), Waste cooking oil methyl ester (WCOME). The Russian simulation software Diesel-RK is used in this work. Four different injection pressures are used which are 200, 500, 800 and 1000 bar respectively. It is found that RME has higher spray penetration with a narrow spray angle due to high viscosity and large momentum compared to diesel fuel. The results reported that biodiesels have greater Sauter mean diameter (SMD) compared to pure diesel because of their higher viscosity and surface tension. Promising reduction in SMD comes with WCOME as the injection pressure increases. Cylinder pressure along with heat release is reduced in the case of biodiesel due to the reduction in heating values. The lowest ability to produce smoke is recorded for WCOME where 93% reduction is achieved followed by a 57% reduction for RME as compared to diesel. The obtained results are compared with the results of other researcher and the convergence between them is observed.