bluuebunny/crossref_metadata_2025 huggingface dataset:
Maraş Otunun Reaksiyon Zamanı Üzerine Etkisi
Authors: SERİNGEÇ AKKEÇECİ Nurten , İĞCİ Nazlıcan , BOŞNAK Mehmet , KARADENİZ Ali , YAMAN Selma
Published: October 2022

Amaç: Bu çalışma, dumansız bir tütün formu olan Maraş otunun kronik kullanımının reaksiyon zamanı üzerine herhangi bir etkisinin olup olmadığını belirlemek amacı ile planlanmıştır.
Gereç ve yöntemler: Çalışmaya herhangi bir hastalığı bulunmayan en az 3 yıldır Maraş otu kullanan 30 kişi, en az 3 yıldır sigara içen 30 kişi ve herhangi bir tütün ürünü kullanmayan 30 kişi olmak üzere toplam 90 sağlıklı erkek dahil edildi. Maraş otu veya sigara kullanan kişilere deneylerden en az 12 saat önce Maraş otu veya sigara kullanmamaları söylendi. Maraş otu kullanan, sigara içen ve herhangi bir tütün ürünü kullanmayan kişilerin işitsel reaksiyon zamanları karşılaştırıldı. Reaksiyon zamanı ölçümleri PowerLab 8/35 LabChart Pro veri kayıt sistemi kullanılarak yapıldı. Çalışmanın sonuçları One-Way-ANOVA ve Kruskal Wallis Varyans Analizi testi kullanılarak analiz edildi.
Bulgular: Yaş, boy, kilo, vücut kitle indeksi (VKİ) gibi demografik özellikler bakımdan gruplar arasında fark yoktu (p>0.05). Reaksiyon zamanı Maraş otu kullanan kişilerde 0.31±0.08 (0.21-0.53), sigara içen kişilerde 0.25±0.07 (0.17-0.40) ve herhangi bir tütün ürünü kullanmayan kişilerde 0.20±0.02 (0.16-0.23) olarak tespit edildi. Maraş otu kullanan kişilerin sigara içen kişilere ve herhangi bir tütün ürünü kullanmayan kişilere göre reaksiyon zamanı anlamlı olarak yüksek bulundu (p=0.002, p<0.001; sırasıyla). Ayrıca sigara içen kişilerin reaksiyon zamanı da herhangi bir tütün ürünü kullanmayan kişilere göre anlamlı olarak yüksek bulundu (p=0.003).
Sonuç: Bu çalışmadan elde edilen sonuçlar kronik olarak Maraş otu kullanan kişilerin sigara içen kişilere ve herhangi bir tütün ürünü kullanmayan kişilere göre reaksiyon zamanlarının daha yüksek olduğunu göstermiştir. Tütün ürünlerinin reaksiyon zamanı üzerine etkilerini araştıran daha fazla çalışmaya ihtiyaç vardır.
Antalya Mevlevîhâne Müzesi’ndeki Mevlevîlik Kültürü ile İlgili Eserler Üzerine Bir Değerlendirme
Authors: TEZCAN KAYA Gülsen
Published: October 2022

Antalya Mevlevihâne Müzesi’nde 2018 yılı eser listesine göre 69 eser, 5 adet ise etütlük eser (mimari parça) bulunmaktadır. Bu eserlerden içinde, litürjik objelerin bulunduğu 45 adeti Mevlevihane’de, kadın ve erkek mezar taşı olan 20’si , Zincirkıran Mehmed Bey Haziresi Bahçesi’nde sergilenirken, mezar taşı parçası, grifonlu mimarî parça, yazıtlı güneş saati ve bezemeli diğer bir mimari parça olan son 4 eser ise Nigâr Hatun Türbesi duvarında yer alır. Yapılan araştırmalara bakıldığında Müze işlevi kazandırıldıktan sonra, envanterlik eserlerin mekân ve kültür ile bağlı olarak topluca değerlendirildiği bir çalışma bulunmamaktadır. Bu çalışma, genel olarak sergilenen eserleri Mevlevîlik kültürü bağlamında değerlendirerek tanıtmayı amaçlamaktadır.
Araştırmada 18-20. yüzyıllar arasında üretilmiş olan, Mevlevihâne’nin iç mekânında vitrin ve duvarlarında sergilenen 45 adet eser tanıtılmış, bunlardan doğrudan tasavvuf ve Mevlevî kültürüyle bağlantılı olanlar üzerine odaklanılarak, bu eserler aracılığı ile Mevlevî kültürünün süreç içerisindeki durumu ortaya konulmuştur. Mevlevilik kültürü bağlamında Osmanlı kültür ve sanatında sıklıkla karşımıza çıkan bu eserler, aynı zamanda 16. yüzyıldan itibaren Osmanlı nakkaşlarının resimlerinde de yer alarak görsel hafızanın yerleşmesini ve devamını sağlamıştır.
Bu bağlamda son restorasyon çalışmasının ardından Mevlevilik kültüründe ayrı bir önemi bulunan mekânlar, farklı odalarda bulunan toplamda 9 vitrinde sergilenen günlük kullanım eşyaları ve tasavvufla ilgili litürjik objeler, kıyafetler ve müzik aletlerinden oluşan eserler ile Semah Salonu duvarlarında üzerinde hat sanatının uygulandığı levhalar, bu kültürün anlamı üzerinden değerlendirilmeye çalışılacaktır.
Thomas Girtin (1775–1802): An Online Catalogue, Archive and Introduction to the Artist
Authors: Smith Greg
Published: October 2022

This new online publication offers an authoritative record of the complete works of Thomas Girtin (1775–1802), a key figure from the “golden age” of British watercolour. Girtin and his contemporaries – including his friend and associate J.M.W. Turner (1775–1851) – are widely recognised as radically opening up the expressive potential of watercolour. During a tragically short career, Girtin epitomised the revolutionary transformation of the medium – creating works that embodied artistic “genius” and changing what had been a prosaic medium into the vehicle for some of the most luminous images in art history.
Discrimination, Social Media Use, and Chronic Stress in Black Americans
Authors: Zeligman Melissa , Jones Janelle L. , Ataga Jasmaine , McNiece Zachary P.
Published: October 2022

Discrimination experiences may contribute to the chronic stress experienced by Black Americans, leaving these individuals particularly vulnerable to mental health concerns. In turn, individuals may utilize social media platforms as a place for online community and shared experience. At the same time, social media may also amplify evidence of global discrimination, further contributing to chronic stress felt in Black communities. Presently, little is known about the relationships between discrimination, chronic stress, and social media use. Multiple regressions and moderation analyses (N = 246) explored the predictive nature of social media use and discrimination on chronic stress in a sample of Black American college students. Results provide initial support for the potential negative impact of social media on chronic stress. Clinical implications for professional counselors are provided.
Comparative characteristics of sagittal balance in normal children and with spondylolisthesis
Authors: Kuleshov Alexander A. , Vetrile Marchel S. , Zakharin Vitaly R. , Ovsyankin Anatoliy V. , Kuzminova Elena S. , Lisyansky Igor N. , Makarov Sergey N. , Strunina Uliya V.
Published: October 2022

BACKGROUND: The measurement of sagittal parameters is an important part of preoperative planning and is also used to evaluate the results of surgical treatment. It is known that in spondylolisthesis (especially at high degrees) the sagittal parameters of the spine differ from those in healthy people. The difference in spinal-pelvic parameters in children and adults without orthopedic pathology has also been proven. One of the tasks of surgical treatment of spondylolisthesis is the restoration of sagittal balance or its maximum approximation to normal values. However, today there is no single accepted norm of sagittal parameters for children, therefore, the question of the optimal tactics of surgical treatment of spondylolisthesis in children remains open.
AIM: To determine the parameters of the sagittal balance in normal children and in children with spondylolisthesis.
MATERIAL AND METHODS: A retrospective analysis of postural radiographs of 68 children was performed. Patients were divided into 2 groups: group I 43 patients from 8 to 17 years old without spinal pathology. Group II 25 patients with spondylolisthesis from 8 to 17 years old. For each patient, the main spinal and pelvic parameters (PT; PI; SS; LL; PI-LL; TK) were measured and statistical analysis of the data was performed.
RESULTS: The study proved that the main parameters of the sagittal balance (PI, PT, SS, LL, TK, PI-LL) in children and adults without pathological deformities of the spinal column are statistically significantly different. Also, there are statistically significant differences between the parameters of the sagittal balance in children and adolescents without spinal pathology and with spondylolisthesis (PI, PT, SS, LL, TK, SFD, PI-LL). In patients with high grade spondylolisthesis, the parameters of thoracic kyphosis and lumbar lordosis are significantly reduced, which should be assessed as a compensatory mechanism for maintaining the vertical position of the body. Children with spondylolisthesis are characterized by a significantly higher PI value.
CONCLUSION: The sagittal parameters of the spine in children and adults are different, therefore, for correct preoperative planning, it is necessary to establish the norm of sagittal parameters for children. It is also necessary to take into account the high value of PI in children and adolescents with spondylolisthesis, which may be the etiological factor of this disease. The existing formulas for measuring sagittal balance for children with spondylolisthesis should be used with caution, because a high PI can lead to unreliable theoretical values of PT, SS, LL and TK. The cause of sagittal imbalance can be not only high degrees of spondylolisthesis, but also the tight hamstrings.
Coxarthrosis. Clinic, diagnosis and treatment: clinical guidelines (abridged version)
Authors: Tikhilov Rashid M. , Lila Aleksandr M. , Kochish Aleksandr Yu. , Alekseeva Lyudmila I. , Shubnyakov Igor I. , Denisov Alexey O. , Bozhkova Svetlana A. , Stafeev Dmitry V. , Builova Tatyana V. , Bodrova Reseda A. , Tsykunov Mikhail B. , Israelyan Yulia A.
Published: October 2022

Coxarthrosis is a heterogeneous group of diseases with various etiologies and similar biological, morphological, clinical manifestations and outcomes, which are based on damage to all components of the joint: cartilage, subchondral bone, synovium, ligaments, capsule, and periarticular muscles. Clinical guidelines are the main working tool of a practicing physician, both a specialist and a narrow practice doctor. Conciseness, structuredness of information about a particular nosology, methods of its diagnosis and treatment, based on the principles of evidence-based medicine, allow to give in a short time one or another answer to a question of interest to a specialist, to achieve maximum efficiency and personalization of treatment. These clinical guidelines include data on the classification, clinical presentation, diagnosis, and treatment of coxarthrosis. In addition, they provide methods for the rehabilitation of patients with this pathology.
Pathogenetic aspects of aseptic peri-implant and paraprosthetic complications in traumatology (review)
Authors: Barkhatova Natalia A. , Kiselev Anton S. , Kiselev Ivan S. , Barkhatova Ekaterina I.
Published: October 2022

The use of metal implants and joint prosthetics occupy an important place in modern traumatology and orthopedics. With the increasing proportion of surgical methods for treating bone fractures and joint diseases, complications develop more frequently. Along with early and late wound infections, there are various response changes in tissues in the area of the implant of an abacterial nature. The results of clinical and experimental studies in the development of fibro-proliferative, immuno-allergic and granulomatous tissue changes around implants determine the important role of macrophages, fibroblasts, cells of the immune system, the peculiarities of the pathophysiology of which this article is devoted to.
Analysis of long-term functional results of surgical treatment of spondylolisthesis in middle-aged and elderly patients
Authors: Gvozdev Nikita S. , Shchurova Elena N. , Prudnikova Oksana G.
Published: October 2022

BACKGROUND: Insufficient attention has been paid to the analysis of the use of instrumental methods of examination in assessment the long-term results of surgical treatment of spondylolisthesis in middle-aged and elderly patients. AIM: To show the peculiarities of strength characteristics of lower limb muscles and temperature and pain sensitivity in the dermatomes of the cauda equina roots in middle-aged and elderly patients in the distant terms after surgical treatment of spondylolisthesis depending on the etiology of the disease. MATERIALS AND METHODS: An analysis of the results of functional studies of 21 patients with spondylolisthesis aged 41 to 74 years (12 with degenerative, 9 with isthmic) is presented. The research done before treatment and 7599 months after surgery. The following research methods were used: analysis clinical (neurological status), visual analog scale (VAS), Oswestry Disability Index (ODI), radiology (functional X-ray examination), magnetic resonance imaging, anthropometry, the lower limb muscles dynamometry, esthesiometry, statistical. RESULTS: In the long term after surgical treatment, patients with isthmic spondylolisthesis had a predominant increase in the moment of force in all muscle groups (3975% of cases). Negative dynamics prevailed in the group of patients with degenerative spondylolisthesis a decrease in muscle strength characteristics in 5094% of cases. According to esthesiometry, more pronounced negative changes in the values of temperature and pain sensitivity thresholds were observed in patients with degenerative spondylolisthesis. CONCLUSION: The analysis of muscle strength characteristics and esthesiometry data determined a different degree of compensation and recovery during surgical treatment of patients with spondylolisthesis, depending on the etiology of the disease.
The Implementation of Podcast Media for Listening Skills Learning Medium of Class XI Student in SMAN 1 Tumpang
Authors: Mambrisauw Riddel Irsan
Published: October 2022

This article was conducted with the aim of describing the learning process of applying Podcast media as a learning medium to train the listening skills of class XI language SMAN 1 Tumpang and also to determine student responses to Podcast media. This research method uses descriptive qualitative method and the source of the data in this study were the students of class XI Language, totaling 20 people on German subjects with the theme Essen und Trinken which is done online via WhatsApp group and Google Form. The data on the application was obtained through questionnaires and field note instrument. The results of this study indicate that the application of Podcast media in learning goes well, students feel helped in practicing listening skills. Student responses to the application of Podcast media showed positive results. Through the application of Podcast media, students get new vocabulary on the theme Essen und Trinken.
Mesostichon with a Project-Based Learning Model in German Subject at Class XI of SMAN 1 Lawang
Authors: Ummah Khoirotul , Bukhori Herri Akhmad
Published: October 2022

The purpose of this study was to explain the activities and responses of students to the application of the Mesostichon with a project-based learning model in learning literary works according to KD 3.5 and 4.5 in class XI IBB SMAN 1 Lawang. This study used the research approach was descriptive qualitative. There are two techniques used to collect the data, namely observation and interviews. The supporting instruments in this study were the observation sheet and interview guidelines as tools for collecting data. the activities of students during the learning process of the German language got positive results and  the responses given by students are in a good category. Students optimally apply their ideas, creativity, and writing skills. This can be seen from the results, it is based on the characteristics possessed by Mesostichon. The application of project-based learning models to support independent learning and increase learning motivation and student interest.Based on the results of interviews with students, project-based learning did not make them bored, it increases the activity and motivation of students in learning.
Autonomous Learning by Utilizing Learning Resources of the Onleihe Goethe Digital Library, UM PSPBJ Student Institute Class of 2018 and 2020
Authors: Ressa Putri Dhea Elvira
Published: October 2022

The purpose of this study was to describe the usefulness of learning resources contained in the Onleihe Goethe Institute digital library and student responses to the use of learning resources in it for autonomous learning. The data sources for this study were 20 German language students class 2018 who were at the linguistic level equivalent to B1 GER and 26 German language students batch 2020 who were at the level equivalent to A2 GER. Data was obtained from closed questionnaires and interviews. Furthermore, the data was analyzed using spiral data analysis. The results of the study indicate that the limited ability of the German language skills of 2020 students is an obstacle to utilizing the learning resources contained in the Onleihe Goethe Institute digital library. On the other hand, the limited German language skills of the 2018 students are a motivation to make the most of the learning resources contained in the Onleihe Goethe Institute digital library.
Independent German Learning Through the Mobile Learning Funeasylearn Application for the 10th Graders of Lintas Minat SMAN 9 Malang
Authors: Salsabillah Nadia Safira , Afifah Lilis
Published: October 2022

This article aims to describe the independent learning process through FunEasyLearn application and student responses to the use of  application. The research method in this study was descriptive qualitative. Sources of data were 36 students of  10th grade IPS 2 SMAN 9 Malang, while data were obtained through two different techniques, namely observations and interviews. The results showed that the independent learning process through the FunEasyLearn application went well. This also helps students to build their independent learning skills. During the learning process, students were responsible for completing the exercises in the apps independently. Furthermore, they had no difficulty in operating the apps. They were also interested and motivated to learn German with the help of FunEasyLearn because it has colorful and illustrated features as well and various exercises so that easier for them to understand the material. Overall, students showed positive responses to the use of the apps independently. They stated that their vocabs mastery increased after using the apps. Therefore, the FunEasyLearn apps can be used continuously as an alterative media for students to enlarge German vocabulary and build their independent learning both in and outside of the classroom.
Application of Show and Tell Learning Strategy to Train Speaking Skills for XI Language Students Class of SMAN 9 Malang
Authors: Anggun Kezia Irma Dwi , Afifah Lilis
Published: October 2022

This research was conducted to describe (1) the application of the show and tell strategy with the theme of Essen und Trinken in class XI of SMA Negeri 9 Malang, to know (2) student responses in the application of the show and tell strategy in learning German. This research used the descriptive qualitative method. The data were collected through observation and questionnaire. Sources of data in this study were 23 students of class XI Language SMA Negeri 9 Malang.This research indicates that the show and tell strategy can train students to speak German enthusiastically and confidently without fear. Students also showed a good response during learning by using the show and tell. Based on the description above, the show and tell can help students practice speaking a foreign language.
Development of E-book “FLASHBACK SEJARAH SASTRA” as a Supporting Source of Literaturgeschichte Course of German Literature Universitas Negeri Malang
Authors: Maysari Ade Putri , Kurniawan Deddy
Published: October 2022

This research and development aim to test the validity of the feasibility of the e-book "Flashback Sejarah Sastra" so that it can be used as a source of supporting learning in the Literaturgeschichte course. The research and development model used is the ADDIE development model. The ADDIE development model is divided into five stages, namely: 1) analyze, 2) design, 3) develop, 4) implement, and 5) evaluate. The results obtained from this research and development are that students who have taken the Literaturgeschichte course find the e-book “Flashback Sejarah Sastra" interesting and can support learning.
The role of the digital portfolio of competencies in the general system for assessing the quality of learning outcomes of students of the university
Authors: Байкина Е.А.
Published: October 2022

Рассмотрено понятие «цифровое портфолио компетенций». Представлен анализ итогов интеграции в учебный процесс вуза данного инструмента комплексной системы оценки результатов обучения студентов. Выявлены возможности цифрового портфолио компетенций как структурного элемента электронного портфолио обучающегося университета, механизма сбора, фиксации оценочных данных успеваемости для осуществления анализа полученных сведений и принятия управленческих решений. Сделан вывод об эффективности его использования в качестве инструмента непрерывного и динамичного процесса «документирования компетентности» обучающихся, создания компетентностного профиля студента в процессе или по итогам освоения им образовательной программы.

The article discusses the concept of “digital portfolio of competencies”. The analysis of the results of the integration into the educational process of the university of this tool of the integrated system of evaluation of the results of training of university students is presented. The possibilities of a digital portfolio of competencies as a structural element of an electronic portfolio of a university student, a mechanism for collecting and fixing evaluation data of student performance for analyzing the information received and making managerial decisions are revealed. The conclusion is made about the effectiveness of its use as a tool for a continuous and dynamic process of “documenting the competence” of university students, creating a competence profile of a student in the process or following the results of mastering an educational program.
The role of the word superiority effect in the productivity of verbal information recognition
Authors: Барченкова Л.В. , Шукурян Г.А.
Published: October 2022

Описывается экспериментальное исследование, проведенное с целью изучения взаимодействия внимания и рабочей памяти при решении познавательной задачи, связанной с визуальным поиском и обработкой вербальной информации. Показано, что в условиях решения познавательной задачи слова воспринимаются автоматически, без участия сфокусированного объектного внимания, сохраняются в рабочей памяти на короткий промежуток времени без семантической обработки в виде пространственноорганизованного образа. Сделан вывод о том, что поиск вербальной информации не происходит продуктивнее за счет эффекта превосходства слова.

The article describes an experimental study conducted to study the interaction of attention and working memory in solving a cognitive task related to visual search and the verbal information processing. As a result of an experimental study, it was revealed that in the conditions of solving a cognitive task, words are perceived automatically, without the participation of focused object attention, and are stored in working memory for a short period of time in the form of a spatially organized image without semantic processing. It was concluded that the search for verbal information is not more productive due to the word superiority effect.
Development and Implementation of a Platform-based inter-cultural English Teaching and Learning Model: Focusing on Culture Project
Authors:   The Korea Association of Yeolin Education, Park Punahm , Kim Tai-Won
Published: October 2022

The purpose of this study is to develop and implement a platform-based intercultural English teaching and learning model for a real time online class (‘English/American culture’) at a Korean university. According to the intercultural language learning theories, the intercultural competence makes learners better understand the target culture and improve language abilities. By incorporating inter-cultural projects into an English & American culture course with an E-buddy project (of one Korean student and one American student as a team) on multiple online platforms, we encouraged Korean students to meet regularly with an American partner and do a collaborative culture project on a chosen topic in English. We analyzed the effects of the class with the inter-cultural project, by employing quantitative and qualitative methods: observations of classes and the culture project, a questionnaire, students’ reflection reports and interviews. The findings showed that students perceived it to be useful for an improvement of their speaking and listening skills. They were able to gain deeper insights into English/American culture and its society. In addition, the students developed certain degree of cross-cultural awareness and thereby came to a reappraisal of their own culture. In general, the students were positive about the course with the intercultural culture project in groups and found it beneficial for their language learning and intercultural understanding.
Review and Recommendations for Strengthening Transitioning-from-State-Care Services for Youth in the Protection System
Authors: Hamilton Carolyn
Published: October 2022

Research studies from a range of countries indicate that, despite differences in policies, youth who age out of state care have significant similarities in outcomes globally. These young people have difficulty finding stable and affordable housing; accessing a social network, healthcare, and supportive and safe social relationships; and engaging in education, training, and employment. The present report, focused on youth aging out of residential care and detention in Belize, aims to contribute to the growing literature on frameworks, models, programs, and best practices to address service gaps and barriers and improve outcomes for youth transitioning to post care. The report presents a diagnostic of available services to support youth in Belize to successfully transition to post-care and provides recommendations to strengthen services that improve their post-care outcomes.
Envejecimiento y atención a la dependencia en el Perú
Authors: Ñopo Hugo R. , Hidalgo Sofía
Published: October 2022

Perú, como la mayoría de los países de la región, enfrenta cambios demográficos importantes: la población adulta mayor aumenta a un ritmo acelerado mientras que los adultos y jóvenes disminuyen proporcionalmente. El instrumento por excelencia para el análisis demográfico, la pirámide poblacional, necesitará ser rebautizado pues para el año 2100 la distribución de la población no tendrá tal forma: será más abultado alrededor de las edades mayores. El “bono demográfico” que se gozaba en el país se está acabando aceleradamente. Se proyecta para el 2050 que la tasa de dependencia de los adultos mayores superará a la de los niños. Por lo cual, las necesidades de cuidado de los adultos mayores están empezando a ser más relevantes en la sociedad actual. Además, las condiciones económicas después de la jubilación son poco favorables pues el acceso al sistema de pensiones es considerablemente restringido. Por tanto, resulta indispensable replantear el gasto social, de forma que responda a las necesidades de servicios de atención de la población mayor. Esta situación constituye un desafío para la oferta de servicios de atención a la población mayor en el país. Para esto debe repensare el total del sistema que constituye la oferta: tanto los servicios brindados por el estado, como por las instituciones privadas y los hogares. La oferta de servicios públicos y privados es limitada y poco regulada. Por su parte, la carga del cuidado de los mayores por parte de las familias suele recaer principalmente en las mujeres. En conjunto, estos retos imponen serias limitaciones a las condiciones de vida, presente y futura, de los peruanos. En este estudio se describen las condiciones de salud y socioeconómicas de los adultos mayores para poner en evidencia la demanda existente de los servicios de atención. Se realiza una descripción de la legislación vigente desarrollada en el Perú con el fin de visibilizar y proteger a la población adulta mayor. Finalmente, se analiza la oferta de los servicios de atención existentes brindados por parte del estado e instituciones privadas, identificando principalmente aquellos orientados a la población en situación de dependencia, y el rol de las familias como proveedoras de servicios de atención.
Hardening mechanisms contribution at nonmonotonic change of properties in the Cu–0.6Cr–0.1Zr alloy at high pressure torsion
Authors:   Institute of Physics of Molecules and Crystals of Ufa Federal Research Center of the Russian Academy of Sciences, Aksenov D. A. ,   Ufa State Aviation Technical University, Faizova S. N. ,   Sterlitamak branch of Bashkir State University,   Ufa State Petroleum Technological University, Faizov I. A. ,   RN-BashNIPIneft LLC
Published: October 2022

Phase transformations play an important role in the formation of properties in the dispersion-hardened alloys, for example, such as the Cu–Cr–Zr system alloys. It is known that under severe plastic deformation, the diffusion conditions change significantly, which leads to a change in the phase transformation kinetics. In this work, the authors studied the Cu–0.6Cr–0.1Zr alloy in the low concentration solid solution state subjected to high pressure torsion (up to 10 cycles). In this case, due to the solid solution low concentration and the formed ensemble of large particles, the process of solid solution decomposition was excluded at the first stages. The preliminary work on the analysis of such structurally sensitive characteristics as electrical conductivity and lattice parameter made it possible to identify the nonmonotonic nature of a change in the alloying elements concentration in the solid solution during HPT. Nonmonotonicity is related to the significant changes in the characteristics of the second phase particles ensemble under the influence of high voltages. Such significant structural changes are reflected in the nature of the mechanical characteristics change. The authors identified that when increasing the number of HPT revolutions, changes in strength also have a nonmonotonic nature, which corresponds to the nonmonotonic nature of changes in the concentration of alloying elements and electrical conductivity. Various contributions to the Cu–0.6Cr–0.1Zr alloy hardening were analyzed. The analysis identified that the dispersion strengthening contribution plays the main role in the nonmonotonic change in the mechanical characteristics. The calculated data correlate with the obtained experimental results.
Microhardness distribution over the surface of Zr-based metallic glass exposed to high-pressure torsion
Authors:   Ufa State Aviation Technical University, Astanin V. V. , Gunderov D. V. ,   Ufa State Aviation Technical University,   Institute of Physics of Molecules and Crystals of Ufa Federal Research Center of the Russian Academy of Sciences, Titov V. V. ,   Ufa State Aviation Technical University
Published: October 2022

Identifying the peculiarities of the transformation of the structure and properties of bulk metallic glass (BMG) under high-pressure torsion (HPT) is of great interest. It is known that under HPT, the degree of deformation differs from the center to the edge of a disk which leads to the non-uniformity of the structure of obtained specimens. The change in microhardness value indicates the direction of change in BMG structure under the HPT, and the microhardness distribution indicates the HPT-specimen non-uniformity. The aim of the study is to identify the HPT influence on the microhardness value and microhardness distribution over the surface of specimens of amorphous alloys using an example of Vit105Zr-based BMG (Zr52.5Cu17.9Ni14.6Al10Ti5). The authors studied the distribution of microhardness over the surface of Vit105 Zr-based bulk metallic glass (BMG) in the initial state, in the state after HPT at n=1 and n=5 rotations, and after relaxing annealing. The study shows that the initial Vit105 BMG is characterized by a small spread in microhardness values, which indicates the material's high homogeneity. By reducing the excessive free volume, relaxing annealing increases microhardness without a significant increase in the spread of its values. HPT leads to a decrease in the zirconium BMG microhardness, which indicates an increase in the excessive free volume, but, at the same time, increases the uneven microhardness distribution over the specimen, while the microhardness values in one half of the HPT sample (n=1) are higher than in the other one. It demonstrates that BMG specimen deformation during HPT is related to the specific loading mechanisms.
Roughness and microhardness of UFG Grade 4 titanium under abrasive-free ultrasonic finishing
Authors:   Institute of Physics of Molecules and Crystals of Ufa Federal Research Center of the Russian Academy of Sciences, Asfandiyarov R. N. ,   Ufa State Aviation Technical University, Raab G. I. ,   G.I. Nosov Magnitogorsk State Technical University, Gunderov D. V. ,   Institute of Physics of Molecules and Crystals of Ufa Federal Research Center of the Russian Academy of Sciences,   Ufa State Aviation Technical University, Aksenov D. A. ,   Institute of Physics of Molecules and Crystals of Ufa Federal Research Center of the Russian Academy of Sciences,   Ufa State Aviation Technical University, Raab A. G. ,   Ufa State Aviation Technical University, Gunderova S. D. ,   Ufa State Aviation Technical University, Shishkunova M. A. ,   Ufa State Aviation Technical University
Published: October 2022

Increasing the fatigue resistance of implants is an important scientific and technical problem. One of the solutions to this problem is the high-strength state formation due to the ultrafine-grained (UFG) structure. However, high-strength alloys are characterized by greater sensitivity to stress concentrators and the surface roughness parameter. In turn, implant designs, as a rule, imply the presence of concentrators in the form of various grooves, threaded elements, etc., and the manufacturing technology supposes mechanical processing with an ambiguous effect on a finished product surface. The application of additional surface finishing, for example, abrasive-free ultrasonic finishing (AFUF), is a solution to this problem. This work aims to study the effect of different AFUF modes on the microhardness and roughness of a cylindrical blank made of Grade 4 commercially pure titanium in the UFG state. During the study, the authors assessed the effect of the rotation frequency of a workpiece and the static force of pressing the tool against the processed workpiece on the surface parameters; carried out microstructural studies of the obtained samples. The results showed that processing titanium in the UFG state by the AFUF method leads to a significant increase in the surface microhardness and a decrease in its roughness. For example, depending on the mode, the increase in microhardness can reach from 2 to 3.5 times. The authors investigated the effect of a power level of ultrasonic treatment on roughness and microhardness and considered various variants of surface pretreatment. The study identified that an increase in the speed of rotation of a workpiece reduces the roughness of a machined workpiece, while the microhardness increases.
The influence of aging on microhardness and electrical conductivity of Cu–2 wt. % Be alloy
Authors:   Ufa State Aviation Technical University, Zaynullina L. I. , Sarkeeva E. A. ,   Ufa State Aviation Technical University, Alexandrov I. V. ,   Ufa State Aviation Technical University, Valiev R. Z. ,   Ufa State Aviation Technical University
Published: October 2022

Goods made of beryllium bronzes got widespread use in the industry due to the complex of properties: high heat conductivity, strength, hardness, wear resistance, and corrosion resistance. They are not magnesium-based and do not spark on impact; therefore, they are essential for the production of non-sparking tools. The alloys of this system are used in the electrical engineering industry; consequently, it is necessary to pay attention to the improvement of the material’s electrical conductivity. The paper studies the microstructure, microhardness, and electrical conductivity of the Cu–2 wt.% Be alloy exposed to high-pressure torsion (HPT). The authors investigated the microstructure and fine structure of the alloy in various states. The study showed that HPT leads to the formation of an ultrafine-grained nanostructured (UFG NS) state with an average size of grains/subgrains of 22±1 mmn. Additional ageing of samples after HPD led to a slight increase in the grains/subgrains size up to 31±1 mmn. In both states, the authors observed nanosized deformation twins. The authors studied the dependences of microhardness and electrical conductivity of the alloy after HPD on the time of further ageing. The study identified that the microhardness increases from 122±3 HV in the initial state up to 525±8 HV after HPD and ageing. The investigation shows that the electrical conductivity substantially better recovers after ageing of the UFG NS state compared to the initial state. The electrical conductivity of the UFG NS state increased from 14.5±0.1 % IACS up to 27.5±0.6 % IACS in conditions similar to the initial state ageing. Therefore, resulting from such processing, the Cu–2 wt.% Be alloy is characterized by its advanced strength properties and electrical conductivity.
Structural-phase transformations in the Zn–Li–Mg alloy exposed to the severe plastic torsion deformation
Authors:   Ufa State Aviation Technical University, Sitdikov V. D. , Kulyasova O. B. ,   Ufa State Aviation Technical University,   Bashkir State University, Sitdikova G. F. ,   Ufa State Aviation Technical University, Islamgaliev R. K. ,   Ufa State Aviation Technical University, Zheng Yu. ,   Peking University
Published: October 2022

In this paper, using the X-ray scattering method, the authors found the similaritues and differences in the structural-phase transformations in a Zn–Li–Mg alloy under the artificial and dynamic aging. The artificial aging (AA) of the alloy was implemented at a temperature of 300 ºС for 24 h, while the dynamic aging (DA) was performed through high-pressure torsion at room temperature for a few minutes. For the first time, using X-ray phase analysis, the authors identified the type and parameters of the LiZn2 phase crystal lattice (Pmmm, a=0.48635 nm, b=1.11021 nm, c=0.43719 nm, α=β=γ=90º) and the β-LiZn4 phase (P63/mmc, a=b=0.279868 nm, c=0.438598 nm, α=β=90º, γ=120º) to the eutectics in specified conditions. The study found that SPD leads to intensive precipitation of Zn particles in the primary β-LiZn4 phase, and β-LiZn4 particles precipitation in the Zn eutectics phase. While analyzing the diffraction patterns, the authors estimated the lattice parameter, the size distribution of coherent scattering regions, the averaged dislocation density, and the fraction of edge and screw dislocations after AA and DA. For the first time, by small-angle X-ray scattering, the authors identified the quantitative characteristics of the size, shape, and nature of the bimodal precipitate distribution in the above-mentioned conditions. In particular, it was found that fine Zn precipitates in the form of needles of 8 nm in diameter and up to 27 nm in length and coarse Zn precipitates in the form of rods of 460 nm in diameter and up to 1000 nm in length are produced in the alloy after AA. In the case of DA, fine Zn precipitates of a primarily spherical shape with an average diameter of 20 nm and coarse Zn precipitates, which formed in the primary β-LiZn4 phase a network with a cell diameter of 200–300 nm and wall thickness of 62 nm are produced in the Zn–Li–Mg alloy.
The formation of PEO coatings on the superelastic Ti–18Zr–15Nb alloy in calcium-containing electrolytes
Authors:   Ufa State Aviation Technical University, Farrakhov R. G. , Aubakirova V. R. ,   Ufa State Aviation Technical University, Gorbatkov M. V. ,   Ufa State Aviation Technical University, Lebedev Yu. A. ,   Institute of Physics of Molecules and Crystals of Ufa Federal Research Center of the Russian Academy of Sciences, Parfenov E. V. ,   Ufa State Aviation Technical University
Published: October 2022

The paper discusses the influence of the electrolyte composition on the characteristics of a biocompatible coating produced by plasma electrolytic oxidation (PEO) on titanium superelastic shape memory alloy Ti–18Zr–15Nb. The scientific novelty of the work is in the identification of the most effective electrolyte composition to form a PEO coating with improved functional properties for advanced metal implants. Having important scientific and social significance, the scientific results of the work will serve as the basis for the development of modern technologies for the production of new-generation implants for orthopedy and neurosurgery. To identify the most effective electrolyte composition, the authors studied the morphology and microstructure of coatings, phase and elemental composition, adhesive properties, and surface wear resistance; carried out electrochemical corrosion tests. The resulting coatings have a thickness in the range of ~15.5–17 µm, and porosity of ~12–18 %. The additive in the form of sodium silicate significantly smooths the surface and increases wear resistance, but, at the same time, reduces the adhesive properties of specimens. The coatings contain biocompatible calcium phosphate compounds, which is confirmed by the presence of an amorphous halo between ~25° and ~40° in the results of X-ray phase analysis and the identified elements Ca and P in elemental analysis. The electrochemical impedance spectroscopy results identified the difference in the structure of PEO coatings and the corrosion processes occurring in them. Coatings formed in phosphate electrolytes have two layers: the external porous and internal compact, and in the phosphate-silicate electrolytes – a single layer. The study identified that plasma-electrolytic oxidation reduces corrosion currents by 1–3 orders compared to a specimen without PEO treatment. The coating formed in a phosphate electrolyte with the addition of boric acid and calcium acetate has the best corrosion characteristics and the highest roughness, which positively affects biocompatibility. This electrolyte can be recommended for further research as the most effective one.
DIGITAL TECHNOLOGIES USED BY CHILDREN IN KINDERGARTEN
Authors: Guzikova Zaneta , Kostrub Dusan
Published: October 2022

Today's children have become the first generation where their entire development takes place in an age full of information and digital technologies. This led us to identify opinions related to the use and mastery of digital technologies in teaching among children completing compulsory pre-primary education. We investigated and interpreted the view of the teaching process with digital technologies from the perspective of the research subjects. We applied a qualitative methodology and the investigation had a hermeneutic character with the use of a narrative interview, direct and indirect observation. We found that the child manages and controls digital technologies and places himself / herself in the role of an expert in their management and control. We suggest that educators rethink the way that children are learning, the way that they teach children and how teachers create a suitable digital learning environment. We will formulate the following research findings into recommendations for teachers' pedagogical practice to ensure their pedagogy.
THE OVERCLAIMING TECHNIQUE IN THE PISA STUDY: A REVIEW STUDY
Authors: Papajoanu Ondrej , Vonkova Hana
Published: October 2022

The overclaiming technique (OCT) is frequently used in research. It is based on analysis of reported familiarity with existing and non-existing items. The inclusion of the OCT in PISA is important for educational research. The aim of this article is to thematically categorize studies using PISA 2012 OCT data, which has not been done before. We identified five thematic categories: mathematics education, questionnaire surveys responding, dishonest behavior, (over)confidence, and inequalities between students. In future, the technique can be used in the context of school misbehavior research.
COOPERATIVE LEARNING IN ONLINE CLASS TEACHING OF MATHEMATICS
Authors: Lazić Bojan , Maričić Sanja , Marić Mia , Mrđa Mirela
Published: October 2022

The aim of the paper is to examine the opinion of teachers about the representation and limitations of the application of collaborative learning in online teaching of mathematics. The survey conducted on a sample selected from the population of primary school teachers in R. Serbia (N=116), and data were collected about cooperative learning in online mathematics classes. The results showed that the majority of teachers apply group work, and less often online teaching. They believe that it is possible to organize collaborative learning in online mathematics classes in lower grades, but that there are certain limitations in the realization of this way of teaching. A small number of them have realized such activities through online classes.
MOTOR SKILLS OF THIRD AND FOURTH YEAR PRIMARY SCHOOL PUPILS
Authors: Stetinova Katarina , Ruzbarska Ingrid
Published: October 2022

The purpose of physical and sports education at the primary education level is to develop motor abilities and acquire fundamental motor skills. Currently, we have available the MOBAK test battery, which enables the diagnosis of fundamental movement competencies in physical and sports education. This test battery could be a suitable test tool to easily find out and assess the level of competence areas within practice. Information obtained from individual test items could help teachers adapt teaching strategies to the needs of students. The aim of our research is to determine and compare the level of fundamental motor skills between third and fourth graders (n = 229; boys = 113, girls = 116) using the MOBAK 3-4 test battery. This contribution is a partial output of the VEGA grant project no. 1/0162/22 entitled "Pupils' movement competencies in the context of primary education - determinants and possibilities of stimulation."
METHODOLOGICAL FOUNDATIONS OF THE FORMATION OF RESEARCH COMPETENCE AMONG HISTORY TEACHERS
Authors: Yergeshov Yerzhan , Astemes Gulim , Savabova Assal , Smagulov Kairat , Duisenbekova Zhanar , Bissenbayeva Zhanat
Published: October 2022

The education system, which provides for the development of the personal potential of future specialists as a special goal, needs a teacher with a high level of high-quality professional training. This is primarily due to the fact that the spiritual and personal potential of the teacher cannot otherwise fulfill the competence of the personal development of the educational process. Thus, the result of the process of preparing teachers for research activities can be defined as the personal and professional development of the student, which is formed in the existing system of knowledge about research professional and pedagogical activities, personal and professional and professional pedagogical development. Pedagogical activity is reflected in practical preparation for research activities. The principle of humanization means that the system of postgraduate training of teachers should be aimed at meeting the needs of the individual in professional development. The idea of recognizing a person as a person in the education system, his right to freedom and equality; the idea of observing the principles of justice and goodness, the norms of human relations; the idea of creating conditions for the free development of creative abilities and human abilities.
CYBER BULLYING AS A PART OF MEDIA EDUCATION IN PRIMARY EDUCATION
Authors: Vagaska Zuzana , Burgerova Jana
Published: October 2022

The implementation of the topic of risky online behavior in the teaching process through the cross-cutting topic of Media education is one of the ways to inform the child user in time about the possible pitfalls of the online environment. The state educational program for primary education prefers an interdisciplinary approach. It thus creates the space for connecting individual educational areas and cross-cutting topics. The paper, therefore, deals with the issue of implementing the topic of risky online behavior into the educational process of primary education, through the cross-cutting topic of Media Education. It interprets the obtained data based on the research method – an electronic questionnaire addressed to primary school teachers.