bluuebunny/crossref_metadata_2025 huggingface dataset:
Expering Pansori Application Scheme in Chinese Korean Language Curriculum: Take the ｢Jeok Byuk Ga｣
Authors:   Center For Educational Research, Huang Zhengfeng
Published: December 2022

Purpose: Considering that there is no content on pansori in the textbook of Korean, this study examined the method of teaching the pansori Jeok Byuk Ga in the Korean language subject in China. Methods: After clarifying the scope of ｢Jeok Byuk Ga｣ that was suitable for education, and the learning that was appropriate according to the contents, such as ‘learning about contents’ by introducing classes, ‘learning about genres’ for acquiring genre knowledge, and ‘in-depth learning’ for thinking more deeply an activity was designed. Results: In ‘learning about content’, the research revealed that teachers can proceed through an entertainment activity called ‘playing with love’, and learning about a genre can be taught by comparing it with the genre of novels that students have already learned. In the ‘deep learning’ stage, activities can be conducted on diverse topics, such as thoughts on transformation, and a comparison of novels and pansori for learning ｢Jeok Byuk Ga｣. Conclusion: When teaching pansori students can learn more than ｢Jeok Byuk Ga｣in the Korean language course, as there are many other learning activities besides those noted in this research. However, since ｢Jeok Byuk Ga｣is an important work noting the change of pansori, it is possible to have an opportunity to discuss the common ways of enjoying literature such as genre change, and learning ｢Jeok Byuk Ga｣is would be to learners.
The Effects of Teachers' Digital Literacy and Transformational Leadership of School Principals on Teachers’ Innovative Teaching Behavior with ICT Mediated by Teacher Engagement
Authors:   Center For Educational Research, Lee Bo-Young , Song Hae Deok , Kim YeonKyoung
Published: December 2022

Purpose: The purpose of this study was to verify the factors affecting teachers' innovative behavior with ICT in the Covid-19 situation, and to provide theoretical and practical implications of teachers' innovative behavior using ICT such as online education. Methods: For this purpose, the structural relationship between teachers' digital literacy, school principal's transformational leadership, teacher engagement, and teachers' innovative behavior with ICT was verified. Data collected from 639 elementary, middle and high school teachers nationwide were analyzed by applying the structural equation model. Results: First, digital literacy and the teacher engagement of teachers had a direct and significant effect on innovative behavior with ICT, but the principal's transformational leadership did not have a significant effect on innovative behavior with ICT. Second, the teacher's digital literacy and the principal's transformational leadership had a direct and significant effect on teacher engagement. Third, as a result of verification of the mediating effect of teacher engagement, it was verified that teacher engagement had a mediating effect in the relationship between the digital literacy of teachers and innovative behavior with ICT, and the transformational leadership of the principal and innovative behavior with ICT. In particular, in the relationship between the principal's transformational leadership and innovative behavior with ICT, teacher engagement had a full mediating effect. Conclusion: Teachers' digital literacy and principal's transformative leadership were confirmed to possess direct and indirect factors affecting teachers' innovative behavior with ICT. Teacher engagement plays an important role in the relationship between relevant factors and teachers' innovative behavior with ICT, and it is necessary to consider ways to enhance teacher engagement in order to improve teachers' innovative behavior with ICT.
Exploring the Characteristics of Teacher's Performance in Educational ODA Experience
Authors:   Center For Educational Research, Yang Jiyoon , Kim Hyeonjin
Published: December 2022

Purpose: The purpose of this study was to explore the characteristics of teachers’ performance through educational ODA experiences. Methods: Five teachers who have participated in educational ODA for more than two years and who are continuing their research and activities in related fields after participation were selected as research participants. In-depth interviews were conducted and analyzed based on the qualitative content analysis method. Results: As a result of the study, a total of ten performance characteristics as themes were derived in a total of three domains. In the basic area, the themes were derived from the constant interest and experience of service, and the challenge of pursuing new things without being complacent. Themes during performance are performance completion with a healthy self-concept, flexible transformation and application of educational expertise, selection and use of media for cross-cultural communication formation of friendly relationships with others, and reflection and commitment found in mistakes. After completion of projects, characteristics such as understanding with a broader perspective, continuous research and expansion of experience, and externalization of experience and commitment emerged. Conclusion: The findings of this study indicate that the performance of teachers participating in educational ODA shows similarities with ODA educators, but also has unique characteristics. The study suggests implications for the development of competency models and educational programs for educational ODA.
Middle School Students' Trajectory of Cooperative Competence: Contemporaneous and Lagged Effects of Parenting Behavior, Peer Relationships, and Teacher-Student Relationships
Authors:   Center For Educational Research, Mo Hwasook , Park So-Young
Published: December 2022

Purpose: This study investigated students‘ trajectory of cooperative competence in middle school and examined if time-varying covariates - parenting behavior, peer relationships, teacher-student relationships - predict contemporary and 1-year lagged cooperative competence. Methods: samples from 2,590 seventh-grade students drawn from the Korean Children and Youth Panel Survey 2018, Second-Order Latent Growth Modeling analysis were examined to ascertain to what extent the time-varying covariates (parenting behavior, peer relationship and teacher-student relationships) have on contemporaneous and lagged effects. Results: First, the cooperative competence of middle school students decreased over time, and the decrease rates were steeper for those who showed a higher level of initial cooperative competence. Second, the contemporaneous effects of three time-varying covariates on cooperative competence were significant, while only peer and student-teacher relationships were found to have lagged effects. Conclusion: The result of this study suggests the importance of positive relationships with parents, peers and teachers for the development of cooperative competence and calls for future interventions to promote students‘ cooperative competence.
A Delphi Study on the Improvement of Practicum for Pre-service Professional Counseling Teachers
Authors:   Center For Educational Research, Jung Ha-Yoon , Jo Hang
Published: December 2022

Purpose: The purpose of this study was to explore the contents of the educational practicum required for pre-service professional counseling teachers, its problems, and its improvement from the perspective of the professional counseling teachers in the school field, which can present an effective operation plan for the educational practicum. Methods: For this research purpose, we selected fifteen professional counselors working at various school levels as an expert panel and collected their opinions through three Delphi surveys. Results: The research results are as follows. The contents of the training practicum for pre-service school counselors proposed by the Delphi expert panel include training on transfer procedures to external organizations, education & guidance for parents and teachers, promotion & planning of Wee-Class events, counseling case conceptualization, guidance on how to write a counseling log, and planning and operation of peer counseling clubs. In addition, the current educational practicum problems include the absence of a manual or curriculum for educational practice, ethical issues that arise when entrusting various types of counseling to trainees, non-payment of tutors' allowances during training, and difficulties in obtaining the consent of clients and their parents during counseling practice for educational trainees. Conclusion: We suggest that it is necessary to develop a training manual and curriculum for pre-service school counselors in order to improve the current educational practicum. In order to make a more effective educational practicum system, it is also necessary to listen carefully to the diverse voices of professional counseling teachers in the field and to actively reflect their opinions in the practicum. Through this, we hope that the educational practicum for pre-service professional counseling teachers will be continuously improved in a direction that is helpful to the enhancement of the practical competencies of trainees.
The Development and Validation of a Gender Role Recognition Scale for University Faculty
Authors:   Center For Educational Research, Choi Hyun-ok , Park Jooryung
Published: December 2022

Purpose: This study developed a gender role scale for university faculty members to measure and verify how they feel and express their gender roles, and to validate the developed tool. Methods: Preliminary questions were extracted by selecting fifty-nine questions as three sub-factors after verifying the validity of the contents from one to three times with tweleve university professors and field experts. Results: An online survey was conducted with 241 university faculty members using exploratory factor analysis. The validity of this scale was verified by conducting a confirmatory factor analysis of 373 university faculty members, and the suitability of the scale was confirmed. Conclusion: Analysis confirmed that the scale was a valid test tool through the correlation between the Korean gender equality consciousness scale and the Korean multi-faceted gender consciousness scale.
PRAKTIK POLIGAMI DI INDONESIA DALAM PERSPEKTIF M. QURAISH SHIHAB, HUSSEIN MUHAMMAD, DAN NASARUDDIN UMAR (THE PRACTICE OF POLYGAMY IN INDONESIA WITHIN THE PERSPECTIVES OF M. QURAISH SHIHAB, HUSSEIN MUHAMMAD, AND NASARUDDIN UMAR)
Authors: Khafsoh Nur Afni , Rukmaniyah Rukmaniyah , Farhani Karina Rahmi Siti
Published: December 2022

This article intends to discuss the thoughts of M. Quraish Shihab, Hussein Muhammad, and Nasaruddin Umar in interpreting polygamy in Islam. The practice of polygamy in Indonesian society has always been a controversial debate for the public. Even the media also brought the issue through films and video documentaries about the practices of polygamy in Indonesia. This phenomenon can indirectly affect the perspective and thinking of the community regarding the legitimacy of polygamy in the socio-cultural context of Indonesian society. Therefore, it is very important to examine the thoughts of the three Indonesian Islamic figures above as a mirror to see how the Indonesian Muslim community should interpret polygamy. This article was compiled based on qualitative research through library research and searching virtual data on the internet. The results showed that the perspectives of the three Islamic figures were very relevant and contextual to be applied in analyzing the phenomenon of polygamy in Indonesia. However, the meaning of polygamy within the society is still tend to be literal. Therefore, a more comprehensive perspective is needed and more attention to local aspects is also required so that polygamy can be placed fairly within society.Artikel ini bermaksud untuk membedah pemikiran M. Quraish Shihab, Hussein Muhammad, dan Nasaruddin Umar dalam memaknai poligami dalam Islam. Praktik poligami di masyarakat Indonesia selalu menjadi isu yang hangat dibicarakan oleh publik. Bahkan media turut membawa isu tersebut melalui film dan video dokumenter tentang praktik-praktik poligami di Indonesia. Fenomena ini secara tidak langsung dapat mempengaruhi cara pandang dan berpikir pada masyarakat berkenaan dengan keabsahan poligami dalam konteks sosial budaya masyarakat Indonesia. Oleh karena itu, sangat penting untuk mengkaji pemikiran tiga (3) tokoh Islam Indonesia di atas sebagai cermin untuk melihat bagaimana seharusnya masyarakat Muslim Indonesia memaknai poligami. Artikel ini disusun berdasarkan penelitian kuatitatif melalui studi pustaka dan penelusuran data-data virtual di internet. Hasil penelitian menunjukkan bahwa perspektif ketiga tokoh Islam tersebut sangat relevan dan kontekstual untuk diterapkan dalam membaca fenomena poligami di Indonesia. Mengingat selama ini pemaknaan masyarakat terhadap poligami masih literal, dan diperlukan perspektif yang lebih komprehensif dan memperhatikan aspek kelokalan agar poligami dapat didudukkan secara adil di masyarakat.
FILANTROPI ISLAM DAN PEMBERDAYAAN MASYARAKAT DI MASA PANDEMI COVID-19: STUDI KASUS INSTITUT KEMANDIRIAN DOMPET DHUAFA (ISLAMIC PHILANTHROPY AND COMMUNITY EMPOWERMENT DURING THE COVID-19 PANDEMIC: A CASE STUDY OF INSTITUT KEMANDIRIAN DOMPET DHUAFA)
Authors: Yulianti Yulianti , Afiah Khoniq Nur
Published: December 2022

The Covid-19 pandemic has had a negative impact on the socio-economic conditions of the people in Indonesia. During the pandemic, Islamic philanthropic institutions have played a significant role in strengthening the community's economy through various empowerment programs. Institut Kemandirian (IK), skills and entrepreneurship training institute, owned by Dompet Dhuafa is one of the philanthropic institutions in Indonesia that actively contributes in handling socio-economic impacts during the pandemic. This study aims to determine the roles, opportunities, and challenges faced by the Dompet Dhuafa in helping to restore and improve the welfare of citizens during the pandemic. The research was conducted using a descriptive qualitative approach with data collection techniques through observation, in-depth interviews with program managers and implementers, and documentation. The results of the study revealed that Institute Kemandirian (IK) Dompet Dhuafa had carried out various kinds of community economic empowerment programs. Opportunities and challenges they face include the difficulty of finding beneficiaries of assistance and issues in licensing program implementation in several regions in Indonesia. However, these obstacles actually lead to more effective empowerment program innovations, namely by utilizing various digital platforms.Pandemi Covid-19 telah memberikan dampak buruk bagi kondisi sosial-ekonomi masyarakat di Indonesia. Pada masa ini, lembaga-lembaga filantropi Islam telah memberikan peran signifikan dalam menguatkan ekonomi masyarakat melalui berbagai program pemberdayaan. Institut Kemandirian (IK), lembaga pelatihan keterampilan wirausaha milik Dompet Dhuafa, merupakan salah satu lembaga filantropi di Indonesia yang memiliki peran tersebut dan berkontribusi aktif dalam penanganan dampak sosial-ekonomi di masa pandemi. Penelitian ini bertujuan untuk mengetahui peran, peluang, dan tantangan yang dihadapi Dompet Dhuafa dalam membantu memulihkan dan meningkatkan kesejahteraan warga di masa pandemi. Penelitian dilakukan menggunakan pendekatan kualitatif deskriptif dengan teknik pengumpulan data melalui observasi, wawancara mendalam terhadap manager dan pelaksana program, serta studi dokumentasi. Hasil penelitian mengungkapkan bahwa Institute Kemandirian (IK) Dompet Dhuafa telah melakukan berbagai macam program pemberdayaan ekonomi masyarakat. Peluang dan tantangan yang mereka hadapi diantaranya adalah sulitnya mencari penerima manfaat bantuan dan persoalan perijinan pelaksanaan program di beberapa daerah di Indonesia. Meski demikian, hambatan tersebut justru memunculkan inovasi program pemberdayaan yang lebih efektif yaitu dengan memanfaatkan berbagai platform digital.
LEISURE, SAFETY, AND SUSTAINABILITY ON POST-PANDEMIC TOURISM: A SYSTEMATIC LITERATURE REVIEW
Authors: Permata Ahmad Norma , Jamiil Sof Chal , Malik Atiyah Rauzanah
Published: December 2022

Tourism is one of the most affected industries by the COVID-19 pandemic. Globally, in less than 6 months after the outbreak of the epidemic, this sector experienced a decline of up to 74%--as it set back to 1990s. However, many tourism-related studies include the keyword or even the title 'post-pandemic' which implies a nuance of optimism for the tourism sector. Using a systematic literature review (SLR), this article explores studies that include keywords and topics 'post-pandemic' in global and Indonesian contexts. Three main points were found: First, there is a global fact that local scale tourism is more sustainable than regional and international tourism. Second, behind the losses due to the decline in income during the pandemic, there is a hidden benefit in the form of restoring natural resources that have been damaged by tourism activities. Third, the emergence of a more systematic mapping of tourist preferences in determining tourist destinations and activities, which is more oriented towards safety, health, and strengthening social relationships with family and colleagues rather than excitement and offering lower cost discounts. The article also found that most post-pandemic tourism recommendations tend to be non-operational due to their failure to provide an operational definition of what the meaning of 'post-pandemic'.Pariwisata merupakan salah satu industri yang paling terdampak akibat pandemi Covid-19. Secara global, dalam waktu kurang dari 6 bulan setelah mewabahnya epidemi, sektor ini mengalami penurunan hingga 74%--kembali ke volume tahun 1990. Namun, banyak penelitian terkait pariwisata memasukkan kata kunci atau bahkan judul 'pasca pandemi' yang menyiratkan nuansa optimisme terhadap sektor ini untuk bangkit. Dengan menggunakan sistematika literature review (SLR), artikel ini mengeksplorasi kajian yang memasukkan kata kunci dan topik 'pasca-pandemi' dalam konteks global dan Indonesia. Tiga poin utama ditemukan: Pertama, adanya fakta global bahwa pariwisata skala lokal lebih berkelanjutan daripada pariwisata regional dan internasional. Kedua, di balik kerugian akibat penurunan pendapatan selama pandemi, terdapat keuntungan tersembunyi berupa pemulihan sumber daya alam yang telah rusak akibat kegiatan pariwisata. Ketiga, munculnya pemetaan preferensi wisatawan yang lebih sistematis dalam menentukan destinasi dan kegiatan wisata, yang lebih berorientasi pada keselamatan, kesehatan, dan penguatan hubungan sosial dengan keluarga dan rekan kerja daripada kegembiraan dan penawaran diskon biaya yang lebih rendah. Artikel tersebut juga menemukan bahwa sebagian besar rekomendasi pariwisata pasca-pandemi cenderung tidak operasional karena kegagalan mereka untuk memberikan definisi operasional tentang apa itu 'pasca-pandemi'.
HOW TO CREATE SOCIAL COHESION DURING PANDEMIC? A SOCIOLOGICAL ANALYSIS OF DIGITAL VOLUNTARISM AS THE PATH OF THE RECONSTRUCTION OF RELIGIOUS CONSCIOUSNESS IN INDONESIA
Authors: Putra Andri Azis
Published: December 2022

The most important function of religious rituals is to accept the expression of shared values and goals in society. This function combines social awareness with patterns of interaction in creating solidarity. Currently, social distancing has been seen by many Indonesians as the cause of the degradation of the value of spiritual intimacy in religious rituals. Meanwhile, the need to accept the “New Normal” in all aspects of daily life is absolute for citizens. Therefore, a new conception of this claim is certainly needed to accommodate the pressure in the adaptation process to the "New Normality of Ritual". This study examines the efforts of digital volunteerism to reconstruct religious consciousness among religious people in Indonesia. The research was conducted with descriptive qualitative methods and using Sociology as an approach in the analysis. The results of this study indicate that digital volunteerism efforts can gradually reconstruct religious consciousness in the community, especially during the pandemic. Eventually, this reconstructed religious consciousness will be able to strengthen social cohesion that was previously reduced when social distancing policies were implemented during the pandemic.Fungsi terpenting dari ritual keagamaan adalah menerima ekspresi nilai dan tujuan bersama dalam masyarakat. Fungsi ini menggabungkan kesadaran sosial dengan pola interaksi dalam mendorong solidaritas. Saat ini, social distancing telah dilihat oleh banyak umat beragama di Indonesia sebagai penyebab degradasi nilai keintiman spiritual dalam ritual keagamaan. Sementara itu, kebutuhan untuk menerima “New Normal” dalam segala aspek kehidupan sehari-hari adalah mutlak bagi warga negara. Oleh karena itu, konsepsi baru atas klaim ini tentu diperlukan untuk mengakomodir tekanan dalam proses adaptasi terhadap "ritual kenormalan baru". Penelitian ini mengkaji upaya voluntarisme digital untuk merekonstruksi kesadaran beragama di kalangan umat beragama di Indonesia. Penelitian dilakukan dengan metode kualitatif deskriptif dan menggunakan Sosiologi sebagai pendekatan dalam analisis. Hasil penelitian ini menunjukkan bahwa upaya voluntarisme digital secara bertahap dapat merekonstruksi kesadaran keagamaan pada masyarakat khususnya di masa pandemi. Pada tahap selanjutnya, kesadaran keagamaan yang terekonstruksi ini dapat memperkuat kohesi sosial yang sebelumnya telah tereduksi ketika kebijakan social distancing diterapkan di masa pandemi.
COVID-19 DAN DISRUPSI PRAKTIK RITUAL KEAGAMAAN DI INDONESIA: DARI TRADISIONAL KE VIRTUAL (COVID-19 AND THE DISRUPTION OF RELIGIOUS PRACTICES IN INDONESIA: FROM TRADITIONAL TO VIRTUAL)
Authors: Hannan Abd
Published: December 2022

Social restrictions during the pandemic have caused Islamic authorities in Indonesia to create a number of adaptations of religious rituals. Worship and socio-religious activities that were previously carried out offline (traditionally) have 'moved' to digital platforms. Through a descriptive qualitative research approach with virtual data collection techniques on the internet and social media, this article aims to discuss the phenomenon of disruption of Islamic ritual practices in Indonesia during the pandemic. The results show that this disruption phenomenon has led to a number of debates about the validity and reduction of the sacredness of certain worship practices in Islam. However, on the other hand, the process of disrupting religious ritual facilities has also become a new innovation for Islamic organizations such as NU and Muhammadiyah to organize certain worship practices that require a larger mass and cross regions using digital platforms, for example, the practice of praying together (istighosah), dhikr together (tahlilan), and religious lectures.Pembatasan sosial di masa pandemi menyebabkan otoritas Islam di Indonesia melakukan sejumlah adaptasi ritual keagamaan. Kegiatan ibadah dan sosial-agama yang sebelumnya dilaksanakan secara offline (tradisional) telah ‘berpindah’ ke platform digital. Melalui pendekatan penelitian kualitatif deskriptif dengan teknik pengumpulan data virtual di internet dan sosial media, artikel ini bermaksud untuk membahas fenomena disrupsi religiusitas Islam di Indonesia di masa pandemi. Hasil penelitian menunjukkan bahwa fenomena disrupsi ini telah memunculkan sejumlah perdebatan tentang keabsahan dan reduksi sakralitas praktik ibadah tertentu dalam Islam. Namun demikian, di sisi lain proses disrupsi sarana ritual keagamaan ini juga telah menjadi inovasi baru bagi organisasi Islam seperti NU dan Muhammadiyah untuk penyelenggaraan praktik ibadah tertentu yang memerlukan massa lebih besar dan lintas daerah. Seperti misalnya praktik doa bersama (istighosah), dzikir bersama (tahlilan), dan ceramah-ceramah agama.
NEW MEDIA DAN OTORITAS KEAGAMAAN BARU: ANALISIS WACANA KONSPIRASI RAHMAT BAEQUNI (NEW MEDIA AND NEW RELIGIOUS AUTHORITIES: AN ANALYSIS ON RAHMAT BAEQUNI'S CONSPIRACY DISCOURSE)
Authors: Romario Romario
Published: December 2022

New media has provided a wider space for religious preachers to convey their da'wah messages to the public. This raises the consequence of the increase of da'wah contents that are not properly filtered by religious authorities, including the discourse of conspiracy. In Indonesia, Rahmat Baequni is one of the controversial Muslim preachers who spreads Islamic discourse and conspiracies through YouTube and has a large number of followers (netizens). This article was compiled based on qualitative research with the aim of discussing how Rahmat Baequni built his religious authority on social media through the conspiracy discourse. The results showed that Rahmat Baequni's story telling techniques and interesting way in his delivery were able to 'attract' young people to believe and follow the messages of his lectures. On the other hand, this phenomenon has raised pros and cons among netizens regarding the validity of the conspiracy discourse initiated by Rahmat Baequni.New media telah memberikan ruang yang luas bagi para penceramah agama untuk menyampaikan pesan-pesan dakwahnya ke masyarakat. Hal ini memunculkan konsekuensi maraknya konten-konten dakwah yang tidak terfilter dengan baik oleh otoritas keagamaan, termasuk dalam hal ini adalah wacana konspirasi. Di Indonesia, Rahmat Baequni adalah salah satu penceramah Muslim kontroversial yang menyebarkan wacana Islam dan konspirasi melalui Youtube dan memiliki followers (netizen) dengan jumlah yang banyak. Artikel ini disusun berdasarkan penelitian kualitatif dengan maksud untuk membahas bagaimana Rahmat Baequni membangun otoritas keagamaannya di sosial media melalui wacana konspirasi.  Hasil penelitian menunjukkan bahwa teknik story telling dan penyampaian yang menarik dari Rahmat Baequni mampu ‘menarik’ anak-anak muda untuk mempercayai dan mengikuti pesan-pesan ceramahnya tersebut. Di sisi lain, fenomena ini telah memunculkan pro dan kontra di kalangan netizen tentang keabsahan wacana konspirasi yang digagas oleh Rahmat Baequni.
Registration and evaluation of micrometeorod parameters using the effect of micrometeoroids interrupting a light curtain of multiple re-reflected optical rays
Authors: Gladyshev Anatoliy I. , Shchelokov Evgeniy A. , Telegin Aleksey M.
Published: December 2022

A mathematical model and a block diagram of an information-measuring system based on the effect of interruption by micrometeoroids of a light curtain of multiple re-reflected optical rays formed by a line of LEDs are presented. The description of options for the formation of a light curtain at different angles of the optical beam is given. The maximum allowable distance between the source and receiver of optical radiation is determined, taking into account the distance between the planes, the reflection coefficient of mirror surfaces, the parameters of the recorded micrometeoroids and external destabilizing factors.
Development of a method for determining the rational installation location of technical means of symmetry in an electrical complex with the presence of an electric motor load
Authors: Romanova Victoria V. , Batukhtin Andrey G. , Khromov Sergey V. , Suslov Konstantin V. , Kobylkin Mikhail V.
Published: December 2022

The work is devoted to the development of a methodological approach to correcting the level of supply voltage in the electrical network by developing an algorithmized method for determining the rational installation location of technical means of symmetry in an electrical complex with the presence of an electric motor load. The developed method makes it possible to implement processes aimed at ensuring the effective functioning of the electrical complex with the presence of an electric motor load in conditions of low-quality supply voltage. The proposed method, based on software, provides design procedures for calculating various options for symmetry and choosing the most economically feasible. Attention is focused on the main criteria for evaluating decisions made when designing the location of technical means of symmetry in the electrical complex. The architecture, the main functional features of the application program as a tool for implementing the calculation method are considered. The program ensures the implementation of electrical calculations in the design, modernization and operation of electrical networks. It provides for the construction of schematic diagrams of sections of electrical complexes with installed means of symmetry. The results of experimental studies demonstrating the effectiveness of the developed method in solving problems of voltage symmetry in the supply electrical network are presented. It is obvious that the developed approach, based on the automatic selection of the locations of the means of symmetry depending on the operating conditions of the electric motor load, makes it possible to automate the design procedures for voltage normalization in the electrical network. Provides minimization of voltage asymmetry in the supply electrical network, contributes to improving the operational reliability of low-voltage asynchronous electric motors. The obtained research results and prospects for the application of the developed approach are discussed, both for solving complex design problems and for the economic justification of local design solutions. A detailed analysis and formalization of the results of the study with relevant conclusions were carried out.
Multi-criteria optimization of the system for complex processing of oil contaminated waste regarding a set of system quality criteria
Authors: Derevyanov Мaksim Yu. , Pleshivtseva Yuliya E. , Afinogentov Аleksandr А. , Mandra Andrey G. , Pimenov Andrey A.
Published: December 2022

The paper proposes a new approach to solving the multicriteria optimization problem for the system for processing man-made waste of the oil and gas complex. The optimization problem is formulated as an integer mathematical programming problem with constraints. The objective function in the optimization problem is formed using a set of efficiency assessments obtained as a result of a multivariate analysis of resource and energy savings in the system for processing industrial waste from oil and gas enterprises based on the Data Envelopment Analysis (DEA) method. As restrictions in the problem, constraints on the maximum duration of the process of processing waste placed in a given group of storage facilities with the help of specialized technological installations are considered. Problem-oriented software has been developed for the numerical solution of the problem of multiobjective optimization.
Determination of the radius of robust stability of the automatic pressure control system in the stabilization column of a catalytic reforming unit
Authors: Dzhambekov Azamat M. , Dmitrievsky Boris S. , Terekhova Anastasia A.
Published: December 2022

It is proposed to take into account the influence of uncontrolled disturbances on the regulation of pressure in the stabilization column of a catalytic reforming unit by changing the coefficients of the denominator polynomial of the transfer function of the automatic pressure control system based on robust stability methods. To describe the problem in a general form, a general view of the polynomial of the denominator of the transfer function of the automatic pressure control system in the stabilization column of the catalytic reformer is obtained. The purpose of the study is to determine the maximum range of change in the coefficients of the polynomial of the denominator of the transfer function of an automatic pressure control system in the stabilization column of a catalytic reformer, at which robust stability is maintained. Methods - methods of robust stability, automatic control theory. A family of polynomials of the denominator of the transfer function of the automatic pressure control system in the stabilization column of a catalytic reformer with squared uncertainty parameters is considered.The problem of determining the area of robust stability of a family of polynomials is reduced to determining the areas of stability of four edge polynomials and the intersection of all areas to determine the area of robust stability of the family. In general, the problem of determining the robust stability of each edge polynomial is described. To determine the area of robust stability of the family of polynomials of the denominator of the transfer function of the automatic pressure control system in the stabilization column of the catalytic reformer, three polynomials, including the nominal one, are specified. Based on the general description of the problem, the radius of stability of each edge polynomial is determined using a graphical criterion and the construction of a Tsypkin-Polyak hodograph. Results - based on the intersection of the stability regions of four rib polynomials, the robust stability region of the family of polynomials of the denominator of the transfer function of the automatic pressure control system in the stabilization column of the catalytic reformer with a stability radius of 1.5 was determined. Conclusion - this result can be used in the development of an automatic pressure control system in the stabilization column of the catalytic reformer and the choice of regulator settings.
Identification of the separately excited DC motor with extended instrumental variables
Authors: Ivanov Dmitry V. , Sandler Ilya L. , Diligenskaya Anna N.
Published: December 2022

The problem of identifying the parameters of a DC motor is considered. The presence of measurement errors of currents and voltages leads to errors in both input and output signals. Existing methods for identifying the parameters of a DC motor do not take into account the presence of errors in both the output and input signals. A discrete model of a DC motor designed for use in digital systems is explored. One of the advantages of this model is the reduction of the problem of parameter estimation to two reduced dimension problems. Reducing the dimension of the problems being solved improves their conditionality and reduces sensitivity to measurement errors. A new method for identifying the parameters of DC motor models is proposed. Parameter estimates are found based on the extended method of instrumental variables. To find estimates, the use of extended equivalent systems of equations is proposed. Extended equivalent systems make it possible to reduce the condition numbers. The conducted numerical experiments showed the advantage of the proposed algorithm over the least squares. The results of the work can be applied in the development of predictive diagnostic systems. The use of the proposed method for identifying the parameters of a DC motor also makes it possible to reduce the requirements for measuring devices due to less sensitivity to measurement errors.
Distributed nonstationary control system synthesis on a basis of spectral representation in space-time domain
Authors: Koval’ Vladimir A. , Torgashova Olga Yu. , Solomin Maxim A.
Published: December 2022

It is proposed, based on the spectral representation of the system, to solve the problem of synthesis of a distributed control plant described by PDE, using LMI technique. The system is described by a spectral characteristic vector with the amplitudes of the space-time modes of the Fourier series as components. The spectral characteristic vector is satisfied to an infinite SLAE composed for an initial PDE using the spectral method. For the spectral plant representation in space-time domain the stability, controllability, and observability criterions are formulated. The procedure of control synthesis on the basis of solving of stabilization problem with full information and observation problem is proposed. The expression for time-dependent matrix regulator gain is received.
Ethernet networks with deterministic delays
Authors: Lichtsinder Boris Ya.
Published: December 2022

The work is devoted to a new technology that provides low and predictable data transmission delays in industrial Ethernet networks. The traffic is divided into critical and non-critical to delays. The features of TSN functioning are considered. The operating principle and architecture of such networks are considered. It is shown that cost reduction can be achieved by having only one network that meets the requirements of deterministic networking and is compatible with modern Ethernet solutions. Examples are given and it is shown that deterministic networks can be used to create hard real-time systems. This is especially true for automatic regulation and control systems that include feedback circuits. The key features of TSN that provide guaranteed message delivery times are traffic transmission time synchronization and scheduling. The TSN switch is presented as two subsystems, one of which performs standard Ethernet functions, and the second provides the TSN control logic. An example of cyclic traffic control according to the schedule is considered. The prospects of using TSN technology in industrial automation control networks are shown.
Structure and operating algorithms of the system for monitoring of the shaft’s axial dis-placement in combined journal-and-thrust bearing of the turbo-pump unit of liquid-propellant rocket engine NK-33
Authors: Belosludcev Viktor A. , Borovik Sergey Y. , Kuteynikova Marina M. , Sekisov Yuriy N.
Published: December 2022

The problem of early wear diagnostics of the combined journal-and-thrust bearing of the turbo-pump unit of the liquid-propellant rocket engine NK-33 is considered. The main purpose of the diagnostics is to identify the initial stage of the bearings intensive wear. This allows to detect timely the catastrophic destruction of the unit and to prevent the development of emergency destruction of the power plant in general. The significant limitation of the appropriate diagnostic methods was the strict requirements of the inadmissibility of any changes on the number and dimensions of the sensors used in the product body while the existing functions of the turbopump rotor rotation speed monitoring should remain unchanged. The authors proposed a solution based on the replacement of the inductive RPM sensors that are currently used in the turbopump unit parameter monitoring systems with single-coil eddy current sensors with sensitive elements in the form of a conductor segment. This approach made it possible to monitor the axial displacement of the shaft in the combined journal-and-thrust bearing associated with the wear of the assembly and to keep the function of the measuring of the turbopump shaft rotational speed unchanged. The article provides a brief description of the implemented approach to early diagnosis of the condition of the bearing assembly of the NK-33 turbopump unit based on the measurement of the axial displacement of the shaft in the bearing. The technical solutions that implement the approach are based on the use of original single-coil eddy current sensors of a special design with shifted sensing elements, the non-standard converters of their output signals in combination with standard analog-to-digital converters (external modules of the Russian-made L-Card E14-440 ADC) and a PC that provides the control of the data aquisition, processing and visualization. A structural and functional scheme of the control system and its generalized operation algorithm are proposed.
Mathematical model of laser tracker measur-ing system for multiple control of large constructions
Authors: Sazonnikova Nadezhda A. , Uklein Roman V.
Published: December 2022

Laser trackers are widely used to non-contact measure large-scale aerospace products. If it is impossible to inspect the entire product with a single laser tracker with a fixed position, multi-station inspection is used. This paper aims todescribes the multi-station control of large-sized products geometry with using a laser tracker as a measuring tool. A three-segment welded cylindrical shell with a diameter of 4100 mm, a height of 1560 mm and a thickness of 24 mm is considered as an object of control. The coordinates of laser tracker and enhanced referring system points are determined from the conditions of their full visibility and the minimum measurement error. A mathematical model of the measuring system for large shell multi-station control for determining the relationship between the coordinates of points measured from different stations of the laser tracker is constructed. The reference points coordinates and laser tracker station coordinates of the measuring system are established in order to minimize the number of mathematical model unknown variables. The calculation results of the of the selected measuring system maximum allowable error was carried out. The experimental studies were carried out to confirm the main mathematical model assumptions. 276 points on the outer surface of the large shell were measured with laser tracker. To determine the deviation of the surface from the theoretical contour, a digital model of the theoretical contour of the assembly was built in the Spatial Analyzer software. The measured control points were compared with the surface of the digital model. The results of the experimental studies confirmed the main mathematical model approaches and showed that the error of the measuring system corresponds to the required values.
Determination of the optimal location of power plants as a part of an autonomous power supply system based on renewable ener-gy sources
Authors: Mirgorodskaya Ekaterina E. , Mityashin Nikita P. , Artyukhov Ivan I.
Published: December 2022

The paper proposes the problem solution of optimal location determining of several power stations in some region. These stations receive primary energy from renewable sources, such as solar panels and wind turbines. At the same time, the condition of the problem includes the availability of information on several perspective areas in this region for the placement of such power stations, as well as information of values and distribution of loads. The developed algorithm for solving of the optimal location selection problem of power stations consists of several stages. The content of the first stage of the algorithm is ranking of possible areas for the location of power stations using local criteria, which are proposed as the specific estimated cost of station arrangement, the remoteness of the proposed location of the power station from loads and settlements. The second stage of the algorithm consists in a set formation of possible areas for the location of stations. And at the final stage of the algorithm, they are ranked using system criteria that evaluate these sets of areas for the location of power stations as a power supply system. The estimated cost of a power supply system arrangement based on power stations, located on areas of the rated set, the specific estimated cost of power stations arrangement, applied to the set of power stations with power lines as an autonomous power supply system, as well as the average rating of areas are proposed as system criteria. In this case, the decision maker, after familiarizing with values of system criteria, sets critical boundaries for each of them. The result of the algorithm is a certain totality of prospective sets for the location of several power stations in a given region, estimates of which according to system criteria are the best correspond to preferences of the decision maker. A feature of the proposed approach is the participation of the decision maker at all stages of design.
Investigation on the age-hardening behavior of Al–Si–Cu–Mg cast alloys by mechanical testing, microstructural characterization, and a CNGT based precipitation model
Authors: Mao Fengxin , Weidt Moritz , Staron Peter , Busch Sebastian , Stark Andreas , Barrales-Mora Luis
Published: December 2022

In the present contribution, the age-hardening behavior of two commercial Al–Si–Cu–Mg alloys was studied during heat treatments at 200 °C and 240 °C. Size and volume fraction of precipitates were characterized by means of transmission electron microscopy, small-angle X-ray scattering, and small angle neutron scattering. Additionally, tensile tests were performed to evaluate the mechanical behavior. Finally, a multi-component multi-phase classical nucleation and growth theory precipitation model was developed to predict the evolution of Mg- and Cu-containing precipitates and their hardening effect. The simulations were in good agreement with experimental findings.
Construction of dual-generalized complex Fibonacci and Lucas quaternions
Authors: Şentürk G.Y. , Gürses N. , Yüce S.
Published: December 2022

The aim of this paper is to construct dual-generalized complex Fibonacci and Lucas quaternions. It examines the properties both as dual-generalized complex number and as quaternion. Additionally, general recurrence relations, Binet's formulas, Tagiuri's (or Vajda's like), Honsberger's, d'Ocagne's, Cassini's and Catalan's identities are obtained. A series of matrix representations of these special quaternions is introduced. Finally, the multiplication of dual-generalized complex Fibonacci and Lucas quaternions are also expressed as their different matrix representations.
Characterization of matrix transformation of complex uncertain sequences via expected value operator
Authors: Das B. , Debnath P. , Tripathy B.C.
Published: December 2022

The aim of this paper is to study the concept of matrix transformation between complex uncertain sequences in mean. The characterization of the matrix transformation has been made by applying the concept of convergence of complex uncertain series. Moreover, in this context, some well-known theorems of real sequence spaces have been established by considering complex uncertain sequence via expected value operator.
The Crisis of the Political. An Individual and the Cosmopolis
Authors: Kazlauskas Raimondas
Published: December 2022

The purpose of this paper is to identify the most important problems of the crisis of the political in the first stage of Western civilization – the Greek world in the IV–II centuries BC. The crisis of the political is treated as a unique constellation of political, supra-political, and apolitical factors. The paper explores a hypothesis of how the power elite eliminates the core features of the political – tensions of consciousness and natural human hostilities – and substitutes them with management techniques that cause public apathy towards previously established democratic institutions. A theatrical model of life with an intensified function of individualizing social roles is an unavoidable result of such processes.
Head and neck radiotherapy in patients with oral rehabilitation by dental implants: analysis of implant survival
Authors: DOURADO PACHECO OLIVEIRA MARIA CANDIDA , Heeren de Oliveira Arno , Ribeiro de Campos Tarcísio Passos , Viegas da Costa Danilo , Teixeira Portela Caio Fernando
Published: December 2022

Radiotherapy (RT) plays an important role in the treatment of patients with head and neck cancer. Clinical changes in the surrounding healthy tissue are often inevitable. The deleterious effects on the bones of the jaws have been considered a contraindication for rehabilitation with dental implants. However, in recent years, the installation of implants in irradiated patients has been consolidated as a valuable treatment option. The aim of this study was to evaluate the effect of RT on the survival of osseointegrated dental implants in patients with head and neck cancer. The applied methodology involved an electronic search in the MEDLINE database during the last five years.  We identified 67 scientific documents related to the keywords: "radiotherapy", "dental implants" and "head and neck cancer", four articles were selected and reviewed, composing this analysis.  It is concluded that dental implants installed in irradiated bone in the oral cavity have a high survival rate, 97.37%, provided that rigorous monitoring is instituted in RT in order to be successful in the long term. The percentage of dental implant failures tended to be higher in the group of irradiated patients.