bluuebunny/crossref_metadata_2025 huggingface dataset:
A CROSS-SECTORAL APPROACH TO STEM EDUCATION: A MULTI-PERSPECTIVE DESIGN
Authors: Zascerinska Jelena , Aleksejeva Anastasija , Zascerinskis Mihails , Abjalkiene Irina
Published: May 2022

The complexity of the STEM education ecosystem at all the educational levels has been risen by the COVID-19 pandemic. The search for a sustainable ecosystem leads to the cross-sectoral approach to STEM education. A sustainable STEM education ecosystem is also characterized by the coherence between the STEM education levels. The research aims at creating a theoretical model of the multi-perspective design of STEM education within a cross-sectoral approach for identifying the implications for further research on the cross-sectoral STEM education. The qualitative research was carried out. Research data were collected through the analysis of published research works. Content analysis was used for the analysis of the collected data. The theoretical novelty of the cross-sectoral STEM education is indicated: the structure and phases of STEM Education implementation and multi-perspective design. The exploratory research allows widening the traditional boundaries of the STEM education (teacher-content-student) with the concepts of educational discipline, conceptual change, all language as the unity, the digitalised educational process, and the cross-sectoral approach. The research is novel in the implications for further research on the cross-sectoral STEM education..
FORMATION OF ECOLOGICAL COMPETENCE OF FUTURE PRIMARY SCHOOL TEACHERS BY MEANS OF ENVIRONMENTAL PROTECTION
Authors: Stakhova Inna , Groshovenko Olga , Pakhalchuk Natalia , Zhovnych Olesia , Komarivska Nadiia , Bilyk Tetiana
Published: May 2022

The ecological crisis on a global scale (melting glaciers, explosions at nuclear power plants, pollution of rivers, seas, deforestation, harmful emissions into the atmosphere) requires radical changes in the process of its elimination. Volitional actions related to the cleansing, restoration and preservation of the natural environment are not enough, much emphasis is placed on educating a humane, environmentally conscious population capable of establishing harmonious relations with the natural environment. That is why higher education institutions face an important task – to form the environmental competence of future primary school teachers, to prepare students for the organization of environmental activities in working with younger students as a basis for shaping their environmental worldview. The article analyzes the theoretical foundations of the formation of environmental competence of future teachers, focuses on important summits, meetings, conferences, which rapidly and purposefully promote the preservation of the natural environment, stimulate the education of environmentally conscious younger generation. The aim of the article is to conduct an experimental study and establish the levels of formation of environmental competence of future teachers, based on its results to identify a model of formation of environmental competence of future teachers of higher education. In the course of the research we have singled out the main components (motivational, cognitive, activity, reflexive) of the formation of ecological competence of future teachers, as well as the corresponding criteria and levels. We conducted an experimental study to establish the level of environmental competence of future teachers among the leading pedagogical institutions of Ukraine: Vinnytsia Mykhailo Kotsiubynskyi State Pedagogical University, Kamianets-Podilskyi National Ivan Ohiienko University and T.N. Shevchenko National University "Chernihiv Colehium". The study made it possible to complete the model of formation of environmental competence of future primary school teachers by means of environmental activities (stages of implementation, priorities, pedagogical conditions, tools, forms). The study outlined new areas for further work.
FIRST-YEAR UNIVERSITY STUDENTS’ EDUCATIONAL/COGNITIVE MOTIVES FOR STUDYING IN RIGA AND SMOLENSK SAMPLES
Authors: Jermolajeva Jelena , Turusheva Larissa
Published: May 2022

For a successful pedagogical process, university teachers need to know the learning motivation of students, monitor it, and take into account its peculiarities while developing learning materials and choosing educational strategies. Especially great attention should be paid to the motivation of first-year students, as in the first months of studies freshmen face increasing difficulties sometimes negatively affecting their motivation. The paper presents some results of an international study of students’ motivation and focuses on one group of learning motives of first-year students, namely, on their Educational/cognitive motives. The aim of the study is to analyse and compare the Educational/cognitive motives of the first-year students at the universities of Riga and Smolensk, as well as to study the interrelationship between this kind of learning motives and the psychological atmosphere in the student group. In the survey carried out in December 2019, 129 students from EKA University of Applied Sciences (Riga, Latvia) and Smolensk State University (Russia) participated. The technique of diagnostics of learning motivation by 7 content scales was used for data collection. For studying the psychological atmosphere in the student group, the technique of 10 bipolar scales was chosen. Table method, descriptive statistics, analysis of statistical indicators, method of comparison, correlation analysis were used in the data processing. The data analysis shows that a few months after the start of studying, the learning motivation of the first-year students is at an average level. However, for successful training, it could and should be improved. In the Latvian sample, indicators for both the general learning motivation and Educational/cognitive motivation are slightly higher than in the Russian one. The correlation analysis reveals statistically significant correlations between the psychological atmosphere and motivation of students. The results of the study are useful for further investigation of students’ motivation and search of the ways to increase it.
THE CONCEPT OF A DANCE LESSON FOR PROMOTION OF WELL-BEING OF ADULTS
Authors: Zīsberga Anda
Published: May 2022

The context of the Covid-19 pandemic has highlighted the idea of improving the quality of life and health of people in the context of modern research. If a person is satisfied with himself, has self-realized, with a good physical well-being, he feels satisfied with life in general, thus promoting a quality of life for himself. There is an ageism perception in society that dance classes are suitable for young people. However, when forms of artistic expression are used to promote well-being in adults, it gains an existential dimension. Dance learning in this interpretation includes internalization of body management and dance technique, self-efficacy, positivity, and self-awareness. Therefore, studies focused on the positive effects of dance lessons on mental and physical health in adults are leading to increased interest, thereby contributing to promotion of well-being and healthy ageing. The aim of this publication is to identify the components of well-being in adult dance classes in the context of lifelong learning and to formulate the concept of dance classes. The study data were analysed using the qualitative data processing program NVivo 12.0. As a result, the components of the well-being of dance class participants have been identified, and an explanation of the individual dynamic balance of well-being content within the homeostasis approach is offered, which is the basis of the pedagogical concept.
STUDENT’S ACQUISITION OF INFERENTIAL THINKING IN MATHEMATICS AND ITS TRANSFER TO OTHER SUBJECT AREAS
Authors: France Ilze , Krieviņa Liene
Published: May 2022

Due to education reform in Latvia, the tendency in education is competence approach with transversal skills as one of its elements. They are included in the state education standard which all the teachers shall carry out in the corresponding education period. All educational establishments face a real challenge of how to implement the planned competences in life. The present research focuses on one of the skills of critical thinking – inferential thinking. By the help of inference students compare information obtained and the results to either confirm or decline their hypothesis, considering the accuracy of the acquisition of the information. The goal of the research is to make and test a system how an educational establishment should organize the study process to teach and develop inferential thinking. The following methods were used in the research: partly structured interviews with the vice-principal in methodological work and teachers of subjects, analysis of methodological materials and analysis of students` written works. The research was carried out to find what the most essential preconditions for students to learn and develop inferential thinking skills are and how to make transfer to various fields to improve learning those skills. A conclusion was made that a purposeful and organized cooperation of teachers plays an important role in teaching transversal skills. The results are better if students can reflect on their achievements using unified description of performance level in all subjects thus implementing the transfer of skills in other subject areas. To teach a skill teacher must plan specific steps to teach and to develop the skill. A model to develop the skill `inferential thinking` has been worked out and tested in the subject of mathematics and is meant to be improved in other subject areas in grade 7.
THE ATMOSPHERE OF FAMILY LIFE AS AN IMPORTANT CONDITION FOR OPTIMIZING FAMILY EDUCATION ON THE EXAMPLE OF THE FUNCTIONING OF FOSTER FAMILIES IN THE CITY OF SZCZECIN
Authors: Kazubowska Urszula
Published: May 2022

The family, influencing a child in the course of everyday life, has many mechanisms at its disposal, which it uses intentionally and unintentionally. The basic value of a family home is a unique atmosphere, a climate specific to each family, in which it organizes conditions for the child's development in all its areas and personality development. In addition, the atmosphere of family life significantly contributes to building the emotional balance of the child, protects it against various unfavorable phenomena and situations, and builds the child's awareness of himself as a person. The atmosphere of family life is not an easy phenomenon to define. It consists of many factors, such as internal factors, such as the personality of the mother and father, mutual coexistence between family members. Another group of factors are those of an external nature, for example the size of the family, its economic and social status, place of residence. The first part of the text is a discussion of the atmosphere of family life in the light of pedagogical and psychological literature, indicating various approaches, their specificity and its importance in optimizing upbringing in a family. The empirical part focuses on the description of the atmosphere of family life and its specificity in foster families operating in the city of Szczecin. Here, particular attention was paid to the types of atmosphere in these families, its conditions and importance for the optimal development of a child. The final part of the text consists of the final conclusions and conclusions resulting from the research on the practice of working with families, including foster families, as well as with families of children in this form of foster care.
SOCIAL SELF-DETERMINATION OF A SECONDARY SCHOOL STUDENT IN THE CONTEXT OF HUMANIZATION OF THE EDUCATIONAL PROCESS
Authors: Aliyev Roman , Chekhlov Mikhail , Chehlova Zoja , Keviša Ingrīda
Published: May 2022

We regard the social self-determination of senior secondary school students as the basis for their education as citizens of Latvia and citizens of Europe. This underpins the need to actualize the problem of social self-determination. The aim of the research is to determine the essence and structure of social self-determination of senior secondary school students and to identify the conditions for the development of social self-determination in secondary school students in the process of education. Research methods include observation, questionnaire, survey, comparison, experiment, and mathematical statistics. Research results are the following:- as a result of the study, there was determined the content and structure of social self-determination as a systemic personal formation, representing the relationship of two components: citizenship and intercultural identity; - the conditions for the development of social self-determination have been identified, including the humanization of the educational process based on a certain system of moral values and beliefs; -  the key strategy for organizing the educational process has been suggested: changing the content of education by introducing a cultural component, which would contribute to a change in all structural components, from the goal to the result; - this implies a change in the procedural aspect of education: the organization of a personal cultural dialogue; the dialogue is regarded as the basis for communication in the pedagogical process; - the key values of secondary school students were determined in the process of a fact-finding experiment.
BOOSTING LIFELONG LEARNING FOR GENERAL SECONDARY SCHOOLTEACHERS: DIGITAL COMPETENCE DEVELOPMENT AMID BLENDED LEARNING
Authors: Malykhin Oleksandr , Aristova Nataliia , Alieksieieva Svitlana
Published: May 2022

The research is targeted at examining general secondary schoolteachers’ strategies for assessing, self-assessing and improving their digital competence. The authors also define the scope of the most effective strategies for developing schoolteachers’ digital competence amid blended learning caused by the Covid-19 pandemic. The main aim of research is to clarify the most effective ways of improving schoolteachers’ digital competence amid blended learning caused by the Covid-19 pandemic. The research activities have been organized and realized taking into account the undisputable fact that digital competence is the key one for lifelong learning. The research methodology for generalizing theoretical material and empirical data collecting implies combining theoretical (analysis and synthesis) and empirical (a web-based questionnaire, individual interviews, conversations with respondents and analysis of reflexive texts) methods of investigation. The research sample consists of 1284 general secondary schoolteachers from different regions of Ukraine. The authors examine information obtained by using the mentioned combination of empirical methods of investigation. As a result of research some certain strategies for developing schoolteachers’ digital competence are found out, described and recommended for being implied into both the system of general secondary school education and the system of general secondary schoolteachers’ postgraduate education. It is also proved that the process of developing general secondary schoolteachers’ digital competence amid blended learning organized effectively is the basis for boosting their further lifelong learning.
THE IMPACT OF INTERACTIVE METHODS ON ONLINE DIDACTIC ACTIVITIES
Authors: Enachi-Vasluianu Luiza , Mălureanu Flavia
Published: May 2022

The period of online didactic activities, caused by Sars-CoV-2 pandemic, offered teachers and students the opportunity to focus more on what is essential, on the elements with qualitative impact, on abilities and skills, rather than on content and peripheral elements (Botnariuc Cucoș, 2020). From this perspective, the use of interactive methods in teaching and in solving cooperative learning assignments was one of the strategies used by teachers to maintain interest in learning, to strengthen the teaching process and to promote intellectual, verbal, social and emotional exchanges among students.Our study focuses on the opinions of teachers from primary and lower secondary schools regarding the impact, the effectiveness of interactive methods in online didactic activities. The study involved focus group discussions and the selection of the most often used interactive methods (clustering technique, quadrants, conceptual maps, starbursting, brainstorming, quintet, think-pair-share, lotus blossom technique etc.) to be transposed into items in the questionnaire used in the research. The information gathered was interpreted using the SPSS analysis. The results of the study provide a data base and a possible framework to facilitate eLearning and a possible working strategy for primary and lower secondary school teachers to ensure students effective interactive learning experiences.
CONCEPTUALIZING THE EFFECTIVENESS RESEARCH OF AN ONLINE CURRICULUM FOR VIRTUE EDUCATION IN LATVIA
Authors: Fernández González Manuel Joaquín , Surikova Svetlana
Published: May 2022

The necessity and unavoidability of moral education in school is well established, but there is still a lack of theoretical knowledge base (know-what) regarding what works effectively in character education. This paper addresses the conceptualization of a 3-year effectiveness research of the online curriculum for virtue education from grades 1 to 9. The goal of the research is to create new theoretical knowledge about what means effective moral education and about what makes an online curriculum for virtue education effective in Latvian context. The effectiveness research uses the randomised controlled trial approach and adopts an experimental trial design, using pre-, intermediate- and post-test with experiment and control groups clustered at the class level in three strata: grades 2-4, grades 5-7, and grades 7-9. The intervention will consist of the implementation of the full virtue education curriculum in the respective grades. A multicomponent questionnaire for pupils and focus-group discussion with teachers are used for data collection. The curriculum is highly coherent with global, national and sector priorities and has a strong potential for enhancing the quality of education and contributing to societal well-being in Latvia.
AN ASSESSMENT OF TRANSPORT LOGISTICS STUDENTS’ PERSONAL FINANCE AND THEIR PERSONAL FINANCE MANAGEMENT SKILLS
Authors: Ginavičienė Jurgita , Sprogytė Indrė
Published: May 2022

Knowledge about personal finance, economics’ expression understanding, ability to manage own money are important nowadays. The main aim of this research is to compare the Transport Logistics students’ personal finance management skills during the Covid-19 pandemic. The respondents were 197 Transport Logistics students of Vilnius College of Technologies and Design. They filled out an electronic demographic data form online and evaluated their personal financial management skills. Results of the research showed students earnings are to 440 EUR per month. Their amount per month was more than 440 EUR, the main groups of expenses, revealed skills of saving, view into the personal control of finance and sufficient rating of knowledge.
CAREER EDUCATION OPPORTUNITIES FOR CHILDREN WITH BEHAVIORAL PROBLEMS AT SCHOOL
Authors: Augustinienė Aldona , Šimkienė Greta , Stanišauskienė Vilija
Published: May 2022

Researchers, analysing career education, note that although the topic has recently received a great deal of global interest and schools are actively working to modernize their career education system, however, it is still inconsistent (Surgėlienė, 2014; Falco, 2016; Ho, Sum, Wong, 2018; Seward Gaesser, 2018; Chuang, Lee, Kwock, 2020; Keele, Swann, Davie-Smythe, 2020; Yang Wong, 2020; Gati Kulcsár, 2021). Actually, most graduates are unsure about their future career decisions, tend to change their choices. In this context, there are doubts about the quality of career education in schools as the evaluation of career education at school reveals various vulnerable groups to whom this service is restricted due to various internal and external conflicts (Hu, Hood, Creed, Shen, 2020; Xu, 2020). The analysis, based on the PRISMA 2020 (Page et al., 2021), aims to answer the questions 1) What are the main institutional (school) empowerment conditions that enable students to gain quality career education? 2) How to encourage students with behavioural problems to take advantage of these opportunities? The review of the research allowed to construct a conceptual framework of career education for children with behavioural problems at secondary school.
INDIVIDUALIZED LEARNING IN THE CONTEXT OF BLENDED MODE OF THE EDUCATIONAL PROCESS IN SECONDARY SCHOOL: CHALLENGES AND EXPECTATIONS
Authors: Topuzov Oleh , Malykhin Oleksandr , Aristova Nataliia , Popov Roman , Zasyekina Tetyana
Published: May 2022

Modern learning is the ultimate collaboration between teacher and student. Much like a doctor, the teacher must assess each individual’s needs, then prescribe the right solution for that person by crafting an appropriate curriculum and delivering it in a way that is meaningful. The principal aim of the research is to get an insight into contemporary issues of the individualized learning against the backdrop of blended learning in secondary school, to say nothing of the future directions for its progress and exercising. The group of researchers prepared a web-based experimental questionnaire (intended for schoolteachers and parents) targeted at illustrating the didactic potential and educational opportunities of the individualized learning as an effective remedy of preventing malign influence and retaining the quality while rendering the learning services faced with unanticipated shift to distance learning due to the COVID-19 pandemic. The inquiry-based pattern which was chosen with the aid of a voluntary response sampling technique comprised some 500 schoolteachers and parents from a various metropolitan secondary schools. Qualitative data analysis of the data obtained offer the opportunities for forming didactic rationale of the individualized learning, which could facilitate the learning process in secondary school as close as accomplishable to practical application of the learner-centered principle within a competency-based approach and digitalization of education. Alternatively, the obtained findings and logical conclusions showed the trends of teaching modes, methods and tools transformation of the individualized learning within the conditions of blended learning in secondary school.
OPPORTUNITIES OF THE IMPLEMENTATION OF BLENDED LEARNING
Authors: Odina Indra , Grosberga-Merca Soneta
Published: May 2022

So far one of the 21st century biggest global events that brought about unforeseen changes in education was the pandemic caused by the SARS-CoV-19 virus. Measures to reduce the spread of the virus have made it necessary to replace traditional face-to-face education with alternative options, such as distance learning or remote learning. Blended learning, which combines face-to-face and online learning and is seen as a solution for future education, has also become relevant during the pandemic, providing an opportunity to promote the integration of digital technologies into learning process and to support equal access to education for all. The article deals with a case study to explore the principles of the implementation of blended learning and pilot them in a higher education institution. Based on the theory review, it has been concluded that blended learning is defined as a method and an approach, as well as a curriculum that combines face-to-face learning with online learning. The data have been collected by the content analysis of documents, questionnaires for students and lecturers and an interview with the director of a higher education institution. The obtained data allow to develop the recommendations for the management of higher education institution, lecturers and students for the implementation of blended learning in the study process.
CASE STUDY: ELEARNING IN COMMUNITY OF PRACTICE FOR MANAGING BY PROJECT
Authors: Katernyak Ihor , Niema Oleksandra
Published: May 2022

New Internet technologies have expanded the possibilities of interaction, overcoming geographical restrictions. The training within communities of practices that have their own identity, determined by both the specific competencies of its participants and the common domain (field of activity, mission, values, topic), paves the way gradually in different sectors and at different levels. The research aims at generalizing the experience in organization and implementation of e-learning on Management of Projects in Community of Practice: Sustainable Development for further use and formation of virtual environments for professional training, exchange of experience, and distribution of innovations.This article summarizes the typical components of a community of practice as the basis of professional educational systems creation and knowledge management method. The paper considers the essence and prerequisites of successful e-learning. It reveals peculiarities of the virtual learning environment of the "Local Development Project Management" electronic course, which combines all the learning activities and course goals, creates the effect of social presence and co-creation. The main points of the course design should draw attention to its topics, adjust each of its elements to the needs of participants in cognition and learning, motivation for actions, cooperation, and interaction. Methods used include analysis and synthesis, induction and deduction, logical generalization, and comparison.
DIFFERENTIATION IN HETEROGENEOUS FOREIGN LANGUAGE CLASSES
Authors: Margevica-Grinberga Ieva , Rektina Andra
Published: May 2022

The article covers the issue of how to teach foreign languages most effectively in heterogeneous classes. Such classes have occurred in most schools and classrooms in recent years. There is an exploration of the latest pedagogical literature and research of the developments and practices in differentiation for mixed classes reviewed in the article. In addition to the theoretical analysis of the literature, practical recommendations from meta-analysis studies and pedagogical specialists are provided. The practical suggestions cover the subsequent steps (e.g., pre-assessment of the students, diversity of the content in the classroom, different learning methods, differentiating of learning outcomes, etc.), that should be implemented in heterogeneous class groups in order to maximize the effectiveness of learning of a foreign language, but the practical approach will be reviewed more widely on the further articles. The article also covers research-based information about the barriers in foreign language teaching to find the solution to the addressed issues. As the respective barriers, the following are named – lack of specific teacher education regarding the mentioned matters and lack of implementing the particular methods in mixed ability groups.
ENERGY GENERATOR PROTOTYPES DEVELOPMENT AND THESE RESEARCH INTEGRATION INTO THE EDUCATIONAL PROCESS
Authors: Matutis Vaidotas , Savulioniene Loreta , Sakalys Paulius , Kasperavicius Tomas
Published: May 2022

The paper presents the preconditions for improving the quality of technical training of engineers by integrating experimental research based on patented technology into the power supply circuits of autonomous robotic systems to improve power consumption and regeneration rate, ensuring longer autonomous robot operation. Not only the topics of arousal of curiosity in researching technical nuances are discussed, but also the promotion of motivation to delve into the study subjects envisaged in the curriculum and their integral understanding by examining the interrelationships. After-school activities are discussed: participation in the research, analysis of the research methodology, preparation of the layout for research and measurements; and the impact of these activities on the overall educational process. Suggestions for the integration of research results into the practical educational process of students are presented.
DAUGAVPILS MEDICAL COLLEGE STUDENTS' START POTENTIAL OF MOTIVES FOR A CHOICE OF THE DOCTORS'S ASSISTANT PROFESSION
Authors: Jankovska Livija
Published: May 2022

Analyses of the students’ education results reveal their insufficient matching with the necessary skills. That serves as a clear evidence for the need of changes in the study process for designing an innovative education system which corresponds to the urgent demands of the modern health care systems. Modern approaches are focused on the development of cognitive and practical skills and attitudes. Covid-19 conditions highlighted the role of health care specialists’ professional attitudes and importance of promoting them in the medical educational process. In addition, long-term pedagogical experience is a basis to claim that college level students also need an assistance for understanding and accepting learning process and taking an active part in it. One of the main aspects of learning is students' readiness to acquire knowledge, active learning and motivation. That is the main reason to define the students' motives to choose the medical profession.
CHARISMA AND LEADERSHIP IN THE WORKS OF NORBERT ELIAS
Authors: Šņitņikovs Aleksejs
Published: May 2022

Norbert Elias has used the concept of charisma to explain the phenomena of rule, leadership and group domination. In developing his interpretation of charisma, he critically analyzed Max Weber’s texts and applied it within his developmental, processual and figurational approach. He derived from the works of Weber the concept of group charisma and interpreted it as a universal social phenomenon. Elias considered charismatic leadership as a social situation, in which a leader’s individual charisma is fused with group charisma. Individual and group charisma are explained partly as social and psychological phenomena of individual and collective identities and partly by historically determined belief systems. Linking charisma to identity brings Elias close to Durkheim’s conception of religion. In Elias’s interpretation, the phenomenon of charisma is related to idealized individual and collective self-images. Manifestations of charismatic claims on the group level, on the one hand, are attributions to one’s group the qualities of special grace and self-praise, and on the other hand, the prejudiced attitudes to other, excluded groups. The phenomena of group charisma and group disgrace are observable in the established-outsiders power relationships. Elias’s interpretation of charisma complements the existing conceptualizations in social psychology and sociology.
Long-term outcomes of myocardial and cerebral revascularization with combined or staged percutaneous interventions and carotid endarterectomy
Authors: Danilovich A. I. , Tarasov R. S.
Published: May 2022

Aim To evaluate in-hospital and long-term outcomes of myocardial and cerebral revascularization with combined or staged PCI and carotid endarterectomy.

Methods.263 myocardial and cerebral revascularizations with PCI and CEA in patients with combined cerebral and coronary artery lesions in the period from 2011 to 2017 were performed. Patients were divided into two groups depending on the surgical strategy. Patient (n = 133) who underwent a staged intervention (CEA and PCI) were included in Group 1, whereas patients (n = 130) who underwent a hybrid intervention (CEE+PCI CA) were included in Group 2. The mean follow-up was 3.5 years.

Results.100% of patients in Group 2 underwent coronary and internal carotid revascularization according to the results of in-hospital and long-term follow-up. 81.35% of patient in Group 1 underwent PCI and CEA, whereas 3.01% of patients underwent only PCI and 6.77% of patients – CEA. 1.5% of patients in Group 1 did not receive any surgical treatment. The most common causes of incomplete revascularization were the subsequent change of the initially defined treatment for myocardial (6.02%) or cerebral revascularization (0.75%). The rest refused the second stage, or it was associated with extremely high risk and the strategy was switched to the conservative therapy.

Conclusion.100% of patients received hybrid myocardial and cerebral revascularization during one hospitalization. It allowed reducing mortality from MI and stroke during the waiting period for the next stage of the treatment in Group 1 (almost 5%). Hybrid interventions can be used in patients with high risk for open-heart surgery, severe comorbidities (obesity, diabetes, renal dysfunction), significant coronary and cerebral artery lesions with high risk of MI and stroke. However, hybrid approach was associated with high rate (almost 7%) of non-fatal MI in the long-term follow-up.
Historical aspects and the current state of treatment of combined coronary and carotid artery disease
Authors: Marchenko A. V. , Vronskiy A. S. , Myalyuk P. A. , Kamenskikh M. S.
Published: May 2022

In this study the primary focus will be on the problem of choosing the treatment tactic in patients with multifocal atherosclerosis. Nowadays, optimal timing of surgical interventions in these patients is controversial. In clinical practice it is usually determined by the severity of the combined coronary and carotid artery disease and the symptoms in patients. There are two main strategies: a staged approach, in which the most affected arteries are primarily revascularized, and a synchronous approach, in which carotid endarterectomy (CEA) and coronary revascularization are performed simultaneously. The presence of severe carotid artery disease is an important incremental risk factor for myocardial infraction after coronary artery bypass grafting (CABG) and needs either concomitant or staged surgical correction. In the absence of randomized controlled trials, guidelines regarding the management of these patients are based on data from single-center retrospective studies. The article indicates historical aspects and current research on multifocal atherosclerosis, as well as clinical guidelines for the management of these patients
Scaffolds as drug and bioactive compound delivery systems
Authors: Egorikhina M. N. , Mukhina P. A. , Bronnikova I. I.
Published: May 2022

The article updates the existing data on the use of scaffolds as target and controlled substance delivery systems. The prerequisites and grounds for using scaffolds as substance delivery systems are being considered. Current tissue-engineered strategies for developing target drug and bioactive substance delivery using scaffolds are being discussed. A classification of scaffold-based substance delivery systems is provided. Special attention is given to the development of two-phase substance delivery systems using various types of nanoparticles. A variety of nanoparticles and the benefits of their use as carriers of substances in a two-component delivery systems are shown. Recent developments in the substance delivery systems for regenerative medicine and future prospects are presented.
DETERMINATION OF STIFFNESS AND DAMPING PARAMETERS FROM A VEHICLE MODEL IN A FRONTAL IMPACT INTO THE RIGID BARRIER USING THE MATLAB
Authors:   Faculty of Humanities and Natural Sciences, Presov University, Presov, Slovakia, KMEC JOZEF , PAVELKA JOZEF ,   Faculty of Humanities and Natural Sciences, Presov University, Presov, Slovakia, SOLTES JAROSLAV ,   Faculty of Humanities and Natural Sciences, Presov University, Presov, Slovakia
Published: May 2022

The main goal of this paper is to create a computer crash model (up to the level of the double mass-spring-damper model, which is described by a system of two differential equations and where the stiffness and damping coefficients - physical parameters are calculated using the Matlab function Y = solve (eqns) - Equations and systems solver) using measured real data obtained from a frontal impact of a vehicle into a rigid barrier. The vehicle crash modelling process can be performed in two ways. One of them, which is also applied in this article, is based on the System Identification Toolbox, which contains MATLAB® functions, Simulink® blocks and a special application for compiling models of dynamic systems from measured I / O data.
A COMPREHENSIVE METHODOLOGY FOR TESTING HARD LAYERS OF CUTTING TOOL PROPERTIES IN ORTHOGONAL TURNING
Authors:   Department of Production Machines and Equipment (RCMT), Faculty of Mechanical Engineering, Czech Technical University in Prague, MASEK PETR , ZEMAN PAVEL ,   Department of Production Machines and Equipment (RCMT), Faculty of Mechanical Engineering, Czech Technical University in Prague, KOZMIN PAVEL ,   HOFMEISTER s.r.o., Czech Republic, SYROVATKA JIRI ,   HOFMEISTER s.r.o., Czech Republic
Published: May 2022

Thin hard layers deposited on cutting tools known as ‘coatings’ serve as a protective barrier against abrasion and adhesion wear, while also protecting against thermal and chemical processes that deteriorate the cutting performance of the tool. Coating properties including non-zero thickness, surface roughness, and chemical composition affect the cutting process significantly when compared to uncoated tools. The mechanical properties of coatings can be compared using specific, standardized measurement methods that provide indirect information about the behavior of the coating in a given application of the machining. In practice, it is necessary to evaluate the cutting ability by experimental testing of a given combination of cutting tool, workpiece, cutting conditions and cutting environment. This article discusses various experimental procedures that help to recognize the suitability of a coating for a particular application. These procedures can be applied alone, or in combination, as required by the cutting process. Each of these procedures have associated advantages and disadvantages, as described in this paper.
APPLICATION OF A MULTI TUNED MASS DISC DAMPERS SYSTEM TO A PORTAL MILLING MACHINE
Authors:   RWTH Aachen University, Laboratory for Machine Tools and Production Engineering, Aachen, Germany, BRECHER CHRISTIAN , ZHAO GUIFENG ,   RWTH Aachen University, Laboratory for Machine Tools and Production Engineering, Aachen, Germany, FEY MARCEL ,   RWTH Aachen University, Laboratory for Machine Tools and Production Engineering, Aachen, Germany
Published: May 2022

The dynamic performances of the machine tools have decisive influence on the achievable accuracy and productivity of the machining processes. For reducing the unfavourable vibrations of machine tools, a system of multi tuned mass disc dampers (MMD system) is developed in this paper. The simulation model of a portal milling machine is built on its CAD model. Thenceforth, the simulation model is parameterized based on the measured natural frequencies, vibration modes and frequency response functions (FRF) of the portal milling machine. Utilizing the parameterized simulation model, the MMD system is designed, the influence of the tuning errors of the dampers is analysed and the robustness of the MMD system is evaluated. The effectiveness and the robustness of the MMD system is validated through FRF measurements and cutting tests on the portal milling machine.
MATHEMATICAL ESTIMATION OF ROUGHNESS Rz OF THREADED SURFACE OBTAINED BY MACHINING METHOD
Authors:   Sumy State University, Department of Manufacturing Technologies, Machines and Tools, Sumy, Ukraine, NEKRASOV SERGIY , PETERKA JOZEF ,   Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology, Trnava, Slovak Republic, ZHYHYLII DMYTRO ,   Sumy State University, Department of Computational Mechanics named after Volodymyr Martsynkovskyy, Sumy, Ukraine, DOVHOPOLOV ANDRII ,   Sumy State University, Department of Manufacturing Technologies, Machines and Tools, Sumy, Ukraine, KOLESNYK VITALII ,   Sumy State University, Department of Manufacturing Technologies, Machines and Tools, Sumy, Ukraine
Published: May 2022

The paper presents a mathematical model of the helical surface roughness Rz, obtained by the form-generating method with a to-size tool with a standard profile of cutting tool inserts. This machining method has maximum productivity with large pitches of the helix. The surface roughness of the auger flight is an important parameter since it works in a friction pair with an elastic element. The resulting dependence makes it possible to predict surface roughness in any of its sections, considering the helix curvature, depending on the feed and the cutting tool tip radius. The obtained dependence allows comparing the numerical solution with the linearized one obtained by finding the minimum distance from the intersection points of the tool edge circles at helical surface adjacent cutting points to the straight line connecting these adjacent points.
Pengembangan Perangkat Lunak Elemen Hingga untuk Keperluan Pendidikan
Authors: Premono Agung , Kholil Ahmad , Hidayat Hidayat , Saputra Dendy
Published: May 2022

Metode elemen hingga adalah salah satu mata kuliah wajib pada hampir seluruh jurusan Teknik mesin di Indonesia. Pembelajaran mata kuliah ini biasanya dibantu menggunakan perangkat lunak komersial. Tetapi, penggunakan perangkat lunak komersial menyebabkan mahasiswa hanya memahami bagaimana menggunakan perangkat lunak tanpa memahami persamaan matematika dan bagaimana proses penyelesaiannya. Tujuan penelitian ini adalah mengembangkan perangkat lunak yang memungkinkan mahasiswa tetap memahami prosedur penyelesaian secara matematika dalam menyelesaikan sebuah masalah. Pengembangan perangkat lunak dilakukan dengan bahasa pemrograman MATLAB. Elemen truss dan aksisimetri digunakan sebagai contoh untuk implementasi pengembangan perangkat lunak. Hasil perhitungan perangkat lunak divalidasi dengan hasil perhitungan yang dilakukan dengan perangkat lunak LISA. Hasil validasi menunjukkan bahwa hasil perhitungan perangkat lunak yang dikembangkan memiliki tingkat kesalahan dibawah 1 % dibandingkan dengan hasil perhitungan perangkat lunak LISA. Dengan demikian maka perangkat lunak hasil pengembangan telah bekerja dengan benar.
Primary leiomyosarcoma of prostate: Report of 3 cases
Authors: Patil Manali A , Padmanabhan Anitha , Gadgil Nitin M
Published: May 2022

Prostate sarcomas originate from the mesenchymal tissues including smooth muscle, fibromuscular stroma, paraganglia, nerves, and blood vessels. They account for less than 0.1% of all prostate tumors and often present with obstructive symptoms. Leiomyosarcoma is the most common sarcoma involving the prostate in adults affecting men between the ages of 40 and 78 years. Patients with leiomyosarcoma of the prostate commonly have a poor prognosis and their life expectancy depends on the stage of the disease at the initial diagnosis. Histopathological examination is essential for definitive diagnosis and can be performed at an early stage using guided transrectal prostate biopsy. Since prostate specific antigen (PSA) levels are generally normal, digital rectal examinations are extremely important. Tumor cells commonly express vimentin, smooth muscle actin and desmin, and up to 25% express cytokeratins. We report 3 cases of prostatic leiomyosarcoma with clinical, radiological, histopathological features and immunohistochemistry.
Educação, TDIC e Saúde no Cenário de Pandemia: Relato de Experiência a partir de um Estágio Docente no Ensino Superior
Authors: Xavier Marcelle Bittencourt , Ventura Adilson
Published: May 2022

Este artigo trata-se de um relato de experiência nas atividades da disciplina Tirocínio Docente, do curso de Doutorado em Linguística, de uma Instituição de Ensino Superior, da rede pública do Estado da Bahia. O Estágio Docente se deu no primeiro semestre letivo do ano de 2021, período este marcado pela pandemia associada à COVID-19, no qual foram implementadas medidas restritivas, seguindo as recomendações nacionais e internacionais de segurança sanitária e de proteção humanitária, a fim de combater a propagação do novo coronavírus. Dentre elas, além do isolamento físico, houve a suspensão de aulas presenciais nas universidades bem como nas escolas. Com o fechamento destes locais, a preocupação precípua foi manter as aulas, assim, recorreu-se à modalidade de ensino remoto emergencial. Neste cenário, os professores e alunos experimentaram significativas mudanças que se deram subitamente no processo de ensino-aprendizagem. Uma delas foi o enfrentamento de desafios no que tange às etapas de observação, de planejamento e da prática pedagógica durante o estágio supervisionado, como podemos citar, o distanciamento físico entre alunos e professor. Por isso, neste período que denominaremos de "novo normal" em que buscamos a reorganização social, como resultados, de modo a preservar a troca de conhecimentos aliada à boa interação entre professor, estagiária e discentes, foi favorável o uso de Tecnologias Digitais da Informação e Comunicação (TDIC), das plataformas virtuais de aprendizagem e das redes sociais, no sentido de contribuir com a formação de pessoas autônomas, críticas e criativas. Por outro lado, houve uma relação desigual de seu uso.
Palavras-chave: Educação online. Tecnologias digitais. Pandemia. Saúde.
Hipertrofia y resistencia a la insulina en un modelo in vitro de obesidad y DMT2 inducida por alta glucosa e insulina
Authors: Bonilla-Carvajal Katherin , Ángel-Martín Alberto , Moreno-Castellanos Natalia
Published: May 2022

Introducción: la obesidad es considerada un factor de riesgo para desarrollar resistencia a la insulina. La expansión del tejido adiposo se ha relacionado con el aumento de la producción de citoquinas proinflamatorias que, junto a los ácidos grasos son responsables, al menos en parte, del desarrollo de la resistencia a la insulina y esta a su vez, facilita el desarrollo de diabetes mellitus tipo 2 (DMT2). Objetivo: el propósito de este estudio fue realizar y caracterizar un modelo in vitro de obesidad empleando concentraciones altas de glucosa e insulina en una línea de células adipocitarias. Métodos: se indujo modelo de hipertrofia celular realizando un estímulo en adipocitos maduros con una concentración de glucosa (450 mg/dL) e insulina (106 pmol/L) (modelo HGHI). Tras estímulo se realizaron ensayos de viabilidad celular, diámetro celular, movilización de lípidos y marcadores de señalización de insulina. Resultados: tras el tratamiento con HGHI, se evidencia hipertrofia adipocitaria, incremento en la acumulación de lípidos, reducción de la ruptura de éstos, alteración de la señalización de insulina y tendencia a modificación de proteínas de marcadores de estrés de retículo y estrés oxidativo. Conclusión: estos resultados demuestran la validez del modelo in vitro que simula al menos en parte la obesidad asociada a insulino resistencia, siendo una herramienta útil para estudiar los mecanismos de susceptibilidad a obesidad y resistencia a la insulina inducida in vitro con diferentes moléculas.
Caracterización del equilibrio dinámico y la tipología de pie en futbolistas juveniles
Authors: Campo-Ramírez Miguel Ángel , Hernández-Oñate Gabriel Enrique , López-Salamanca David Eliecer , Hincapié-Gallón Olga Lucía , Mosquera Wladimir , Paz-Sánchez Gina Marcela
Published: May 2022

Introducción: el equilibrio dinámico (ED) es la base para todas las actividades motoras deportivas. Algunas variables como el tipo de pie y el mecanismo de Windlass (MW) están asociadas a dicho equilibrio y al riesgo de lesión en la extremidad inferior. Se hace necesario el reconocimiento de estos elementos en la población con el fin de identificar potenciales factores de riesgo y promover las respectivas medidas preventivas. Objetivo: Caracterizar el equilibrio dinámico, algunas variables sociodemográficas, antropométricas y anatómico-funcionales del pie en jóvenes futbolistas del Club Deportivo Cañasgordas Latinos. Materiales y métodos: estudio cuantitativo, observacional y de corte transversal. Se incluyeron 10 futbolistas. Se evaluó ED por medio del Y-Balance Test. Se evaluó el MW por medio del Test de Jack. Para determinar la tipología del pie se utilizó el método HERZCO. Resultados: se identificaron aspectos susceptibles en el equipo y posibles factores de riesgo de lesión como la prevalencia de pies cavos y la inactivación del mecanismo de Windlass en el 70% de la muestra. Ningún deportista presentó riesgo de lesión asociado a asimetrías en el equilibrio dinámico. Conclusiones: Se sugiere complementar la evaluación del ED con factores anatómico-funcionales en futuros estudios para determinar el riesgo de lesión.