Statistical Processing Methods Research Articles

ИЗМЕНЕНИЯ КЛИМАТА НА ТЕРРИТОРИИ РЕСПУБЛИКИ ТАТАРСТАН

The paper looks at the dynamics of air temperature changes in Kazan in the 19th-21st centuries against the background of climatic processes occurring in the Northern hemisphere. The study used proven statistical methods of time series processing, correlation and trend analysis, and a Potter filter to isolate the low-frequency component. The fastest rate of warming in the region was established to occur in the winter-spring period. At the same time, the three decades between 1991 and 2021 turned out to be warmer in each month than the 5 previous three-decade periods. The contribution of the entire Northern Hemisphere to the fluctuations in the air temperature in Kazan was estimated (42% in winter and 27% in summer). It has been established that the average annual temperatures in Kazan and the entire Northern Hemisphere changed in the opposite phase until 1970. Since 1870, the winter temperature in Kazan has increased by 4.7°C. During the summer period, a ‘hump’ (warming) was detected on the low–frequency temperature curve in Kazan in the period 1920–1960, which can be explained by the fact that during this period the atmosphere in the Northern Hemisphere was more transparent (by 2%) than in the other periods. The consequences of climate change in the region in recent decades have had an effect on the dynamics of agro-climatic resources of Tatarstan. Several agrometeorological indicators were calculated, including the M.I. Budyko dryness index, the Selyaninov hydrothermal coefficient (HTC), and the Sapozhnikova moisture coefficient. According to the estimates made, there has been an increase in the duration of the growing season and the sum of effective temperatures, and also a weak trend toward increasing aridity in the summer period has emerged. Using ensemble calculations based on 40 climate models from the CMIP6 project, the paper provides an assessment of future climate changes in the region: the annual temperature in Kazan is expected to increase by 2.4°C by the end of the 21st century according to the ssp245 scenario. Under the ‘toughest’ ssp585 scenario, this increase will be 5.5°C.

Формирование методического подхода к прогнозированию устойчивого развития региона

Subject/topic. The article is devoted to the scientific problem of sustainable development of the region. Issues of sustainable development have become acutely discussed in the international community at all levels of government, in connection with environmental pollution, ecosystem depletion, and climate warming. The problems of reducing the quality of life and the economic inexpediency of regional investment projects are added to environmental problems. The subject of the study is a methodological approach to forecasting the sustainable development of the region. Goals/objectives. The purpose of the study is to develop an author's methodological approach to forecasting the sustainable development of the region, taking into account its specific features and taking into account the accumulated experience in this area. Methodology. The research methodology was a systematic approach, which used: a retrospective analysis of significant indicators of regional development, approximation, statistical methods of information processing, correlation and regression analysis. The empirical basis of the study was Rosstat data on the socio-economic development of the regions. Results. The author's methodological approach to forecasting the sustainable development of the region includes methods and techniques for building an economic model and assessing its quality. A universal algorithm for the formation of an economic model for forecasting the sustainable development of the region has been developed. The selection of independent and dependent variables - factors influencing the sustainable development of the region - has been carried out. The presented economic model of forecasting the sustainable development of the region, developed on the basis of correlation and regression analysis, reflects the peculiarities of the development of a particular subject of the Russian Federation. The model is quite reliable from the point of view of statistical estimates, which makes it possible to conclude that it describes the sustainable development of the region with high probability. Conclusions/significance. The novelty of the study lies in the development of the author's methodological approach, which includes an algorithm for the formation of such an economic model, which will identify social, environmental and economic factors affecting the sustainable development of the model region and assess the degree of their influence. As a result, it was possible to identify priority areas of activity of public authorities to achieve sustainable development of the Moscow region. Application. The proposed algorithm for forming an economic forecasting model is universal and can be applied to predict the sustainable development of other regions, taking into account the assessment of the quality of the economic model. The results obtained can be useful for substantiating management decisions of public authorities on the sustainable development of regional systems, forecasting the sustainable development of the region, taking into account its specific features affecting the development of the ecosystem.

Narrative Realism in Ukrainian TV News Layout: Editorial Strategies and Viewer Engagement (2004-2020)

The main aim of this study was to investigate the strategic employment of narrative methods and presentational techniques in Ukrainian television news from 2004 to 2020. This study sought to evaluate their impact on the construction of narratives and public discourse. A mixed-methods approach was employed to analyze 531 news releases from three Ukrainian television channels: “1+1”, “Ukraina”, and “Inter”. The application of statistical methods for data processing was employed for the quantitative analysis, while the qualitative analysis comprised a rhetorical investigation of narratives and framing techniques. This approach enabled a comprehensive examination of how news narratives are structured, presented, and perceived, offering insights into the underlying mechanisms of news layouts and editorial strategies. The study’s findings demonstrated a significant reliance on conflict framing, economic consequence framing, and character-driven narratives to increase viewer engagement and comprehension. Hierarchical structuring and modular design were identified as key presentation methods that reflect adaptability to real-time broadcasting requirements and audience preferences. This investigation concludes that narrative strategies and presentation techniques play a crucial role in shaping public perception, thereby affecting the construction of media narratives and societal views. The study’s findings are significant for media practitioners and policymakers, as they emphasize the importance of narrative realism and ethical considerations in news production. The research results also offer a foundation for future studies on the effects of digital transformation on news narrative structures.

Личностно-профессиональное развитие педагога как фактор реализации потенциала неуспешных одаренных школьников

Background. The study of personal characteristics and cognitive needs of the intellectually gifted students with underachievement in school is relevant for the scientific substantiation of the personal and professional development programs and training for the teachers to interact with such pupils. Objective. Theoretical and methodological analysis of new scientific data on the cognitive and personal development of intellectually gifted schoolchildren underachieving in education as the psychological and pedagogical basis for developing teacher training for interaction with such students; empirical study of motivational and personal characteristics of intellectually gifted schoolchildren with different academic achievement. Study Participants. The empirical study involved 460 intellectually gifted students in grades 5–10 in Moscow schools, 74–80 people in each cohort. Methods. Theoretical and analytical review of new scientific publications on the peculiarities of the cognitive and personal development of intellectually gifted schoolchildren underachieving in education as well as their psychological and pedagogical support by teachers. The empirical study implemented the diagnostics complex including tests of cognitive abilities, questionnaires of achievement motivation, academic and general self-esteem (adapted by the author: Shcheblanova, 2006), parametric statistical methods for the data processing. Results. The analysis of the school teachers' ideas about self-efficacy in teaching gifted students demonstrated their insufficient professional readiness to work with such pupils. Recent scientific publications review highlighted the important aspects of the modern understanding on differentiated approach to the identification and education of intellectually gifted children taking into consideration the new data on the variability of giftedness manifestations and trajectories of its development in the programs for the personal and professional development of teachers. Conclusions. The study provides theoretically and empirically substantiated basis for developing teacher professional and personal training for effective interaction with intellectually gifted students, and namely, — understanding the peculiarities of not only cognitive, but also motivational and personal development of students with high abilities and varying academic achievement as well as the need of psychological and pedagogical support for intellectually gifted underachievers.

АНАЛИТИЧЕСКИЙ ВЗГЛЯД НА РАЗВИТИЕ РЫНКА ТРУДА И СИСТЕМЫ ОБРАЗОВАНИЯ В РОССИЙСКОЙ ФЕДЕРАЦИИ

The purpose of the paper is to analyze and identify patterns associated with the transformation of the labor market and the system of secondary vocational and higher education, as well as the relationship between the main indicators characterizing their development. To determine the degree of influence of structural unemployment on the socio-economic development of the country and the labor market, as well as to establish the causes of the qualification gap, the authors carried out an analysis of the main indicators of secondary vocational and higher education. The study used systematic and comparative approaches, structural analysis, and statistical information processing methods. The research results showed that there has been a trend in the demand for training programs for specialists with secondary vocational education, and the number of students of specialized specialties and graduates of specialized educational institutions is increasing. Measures are also being taken to improve the training of specialists with higher education: the number of university students is being optimized, and educational programs aimed at training priority specialists for the economy are being updated. An analysis of state programs for the development of higher education showed that strategic goals and objectives in this area are being implemented in accordance with the established tasks.

СРАВНИТЕЛЬНЫЙ АНАЛИЗ ПРЕДПОСЫЛОК СОЦИАЛЬНОЙ КОММУНИКАЦИИ ПОДРОСТКОВ С МЕНТАЛЬНЫМИ НАРУШЕНИЯМИ

Introduction. Currently, the issues of studying and developing communicative skills in children with disabilities are among the priority areas of modern correctional pedagogy and rehabilitation. The relevance of this issue is due to the need to expand the possibilities of their socialization, which is closely related to the formation of a system of life competencies based on knowledge of the basic patterns of social interaction, the ability to effectively use communication skills with other people in various situations of daily activity. The greatest risks of social and communicative maladjustment are observed among children with intellectual disabilities. The article presents the materials of theoretical analysis and the results of a comparative study of the social and communicative sphere of adolescents with different levels of intellectual underdevelopment. Materials and methods. The experiment involved 118 adolescents with varying degrees of intellectual development disorders (42 children with delay in mental development, 49 adolescents with mild delay in mental development and 27 children with moderate delay in mental development). Empirical data were obtained on the basis of the scientific and Practical Center for Mental Health of Children and Adolescents named after G. E. Sukhareva and the Center for Speech Pathology and Neurorehabilitation of the Moscow Department of Health. In the process of research and preparation of the article, methods of analyzing literary sources, experimental methods of studying the social and communicative sphere, methods of statistical processing of research results were used. The results. The specific difficulties of communicative behavior that arise in adolescents with ASD, mild and moderate severity of intellectual disabilities have been identified. The experimental data obtained can be taken into account to determine the content of speech therapy work aimed at developing social communication skills in children with varying degrees of intellectual underdevelopment. Conclusion. The problem requires further study, development and implementation of special differentiated technologies for the formation of competencies in the social and communicative sphere of adolescents with intellectual disabilities.

A COMPREHENSIVE APPROACH TO THE MANAGEMENT OF PSYCHOLOGICAL SERVICES IN THE EDUCATION SYSTEM OF UKRAINE: ECONOMIC COMPONENT

The subject of the research is the main problems related to the economic consequences of the war, which can affect Ukrainian education in the war and post-war period. Methodology. Theoretical and empirical research methods are used, in particular: theoretical analysis and generalisation of psychological practice; development of theoretical approaches and organisational and methodological conditions for improvement of practical activity of specialists of psychological services; surveys; study of methodical and reporting documentation; methods of statistical processing of experimental data. The purpose of the article is to determine the factors that can affect the quality of education and economy through aspects of the activity and peculiarities of the functioning of the psychological service in the educational system of Ukraine in the conditions of armed aggression of the Russian Federation. It is noted that the consideration of psychological factors is necessary to substantiate the activity of a psychological service specialist in the educational system of Ukraine, in connection with the complication of working conditions, competent management of the team, support and assistance in the realisation of the creative potential of employees of educational institutions, etc. The issue of creating psychological support for participants in the educational process was raised. It was noted that the provision of psychological support, development and implementation of correctional programmes will help to overcome stress and injuries, contribute to the return of pupils and students to full-time studies and ensure their further successful adaptation. The article presents the experience of pedagogical and methodological provision of psychological support at the all-Ukrainian level at the State Scientific Institution "Institute of Education Content Modernization". It gives recommendations on how to overcome the negative economic consequences of the war and the negative psychological impact on Ukrainian education. The publication describes the aspects of the psychological service in the educational system of Ukraine, in particular, conducting scientific research on the problems of methodology and theory of practical psychology of education, studying the patterns of mental development and formation of the child's personality; development of methods and technologies for the work of practical psychologists and social pedagogues, including professional training and advanced training of specialists; creation of an effective structure of the psychological service of education, which ensures the interaction of all parts of the service on subject and organisational issues. The results of the study reflect the state and development of the psychological service in the education system of Ukraine, the analysis of the activities of the psychological service under martial law and the implementation of Article 76 of the Law of Ukraine "On Education". Conclusion. Creation of conditions for quality education and support of psychological well-being of all participants of the educational process is a priority task of the psychological service in the educational system of Ukraine. According to the results of the analysis of the work of the psychological service in the educational system of Ukraine, it was determined that the psychological support of learning, psychological and socio-pedagogical support of the participants of the educational process in the conditions of martial law is an essential condition for maintaining and strengthening the mental health of future Ukrainian generations. This will contribute not only to the post-war reconstruction of society, but also to the future economic development and stability of Ukraine.

Relationship Between Types of Family Education and Emotional-volitional Sphere in Student Age

Intra-family relations are the main component of the educational potential of the family. In our society, they are conditioned by state and domestic relations. Their significance in the formation and development of the individual is due to the fact that they are the central link in social relations in which the individual enters into the process of his personal growth.The family is the main phenomenon that accompanies a person throughout his life. Its influence on the personality, its complexity and versatility give rise to many approaches to the study of the family and definitions that can be found in the scientific literature. The object of study is the family as a social institution, a small group or a system of relationships.The purpose of the presented pilot psychological study was to study the influence of types of family education on the formation and development of the emotional-volitional component in student age.The paper studies such characteristics as student age, emotional-volitional sphere, types of family education, family, emotions and will.In the work, a bibliometric analysis of the research problem was carried out, an experiment was carried out. Thanks to the psychological experiment, the types of family education and their influence on the development of the emotional-volitional sphere of such a category as students were determined.The results of the study are based on a systemic, axiological, humanistically oriented methodological component. The methods of pilot psychological research were experiment, observation, survey, method of statistical processing of results.

Parametric Characterization of a Tractor Engine by Specific Fuel Consumption

The paper highlights that equipping agricultural mobile machines with sensors and electronic controls enables the remote acquisition of real-time information regarding the technical condition of engine systems while operation. (Research purpose) The objective of this research is to formulate a methodology for determining the multi-parameter characteristics of specific effective fuel consumption. This is illustrated through an examination of the Deutz BF 6M 2012 C engine, installed in the of the Terrion ATM 4200 tractor. (Materials and methods) The electronic control system was examined through data analysis. Utilizing Logic Analyzer 8, a connected logic analyzer, facilitated the extraction of a multi-parameter characteristic related to the specific fuel consumption of the engine. This data was obtained from the CAN bus while the machine was in operation. A statistical data processing method was developed using the Statistica 10 program. Regression equations were formulated to illustrate the correlation between fuel consumption, crankshaft speed and engine torque. The statistical significance of the relationship between fuel consumption across the entire range of operating modes and the selected parameters was corroborated by the values of the coefficient of determination and Fisher’s criterion. (Results and discussion) The data from the multi-parameter characteristic, illustrating the correlation between fuel consumption, engine speed, and torque, aligns with the information provided by the manufacturing plant. This alignment further validates the accuracy of the derived regression equations. (Conclusions) The suggested sequence of steps for obtain a multi-parameter characteristic can be applied to other engine performance indicators. Monitoring operational performance to analyze information on the technical condition of machine components and assemblies is necessary for diagnostics and ensuring timely maintenance and repair.

Formation of schoolchildren’ divergent thinking in the conditions of additional education when working with timelines

Problem statement . One of the most important tasks that digital school teachers face is preparing a graduate, who is ready to use the acquired knowledge in his future life and find non-standard, original solutions, overcoming the usual patterns and established opinions. The study aimed at substantiating the effectiveness of the use of timeline services for the development of divergent thinking in schoolchildren in the conditions of additional education. Methodology . Theoretical and methodological analysis and generalization of fundamental scientific works on the research problem, processing of test results and timelines were applied. The pedagogical experiment involved 130 students of the state budgetary educational institution of Moscow “School No. 1506”. To diagnose and assess the formation of divergent thinking, the method of F. Williams (adapted by E.E. Tunik) was used. Pearson's chi-square test was used as a statistical processing method. Results . The timeline in additional education was carried out when displaying historical facts in chronological order, compiling algorithms, creating biographies, and presenting statistics. The didactic potential of the timeline as a kind of quantitative infographics is revealed, which offers a graphical implementation of digital data in relation to each component in the structure of creativity: flexibility, originality, elaboration, fluency. Statistically significant differences in qualitative changes in the pedagogical system were determined. Conclusion . The use of timeline services in the conditions of additional education contributes to the development of divergent thinking of students due to the possibilities of interactive presentation of events and facts, reuse, multimedia, technical minimalism. Difficulties that complicate the use of virtual timelines are noted: time resource management, the need to develop criteria and indicators for the effective use of web services for the corresponding purpose.

Using 3D-modeling to improve the quality of bachelors’ training in the field of socio-cultural activities

Problem statement. The implementation of 3D modeling elements in the in-demand specialists’ training of the socio-cultural sphere is in line with the recommendations of UNESCO and the priorities of Russia’s state cultural policy. The study aimed at substantiating the effectiveness of the three-dimensional computer graphics usage for specialists’ training to improve the quality of their education. Methodology . Theoretical and methodological analysis and generalization of fundamental scientific works on the research problem, processing of test results, and three-dimensional models of cultural objects are applied. The pedagogical experiment involved 49 students of the direction of training 51.03.03 Socio-cultural Activities (level - bachelor’s degree) of Orel State Institute of Culture. Pearson’s χ2 test was used as a statistical processing method. Results . The features of the use of three-dimensional computer graphics in the training of specialists in the socio-cultural sphere to improve the quality of their training are determined: activation of information communication; support for solving economic and engineering problems as components of socio-cultural activities; automation of a large number of calculations, etc. Statistically significant differences in qualitative changes in the pedagogical system were revealed. Conclusion . The use of three-dimensional computer graphics in the training of specialists in the socio-cultural sphere will help to increase the level of their professional training while providing a set of conditions: a combination of design, educational and research activities; orientation to the performance of labor functions; application of fundamental theoretical information on technologies for organizing leisure activities in real socio-cultural activities, etc.

The impact of the mobile applications usage on the quality of tourism specialists training

Problem statement . The modernization of the educational system involves the adoption of technologies based on artificial intelligence, AR, VR, and mobile platforms. The use of mobile tools in the training of workers in the tourism industry meets the requirements for training programs for highly qualified professionals in this area and the challenges of economic integration. The study aimed at substantiating the efficacy of the use of mobile applications in the training of tourism industry specialists for the quality improvement. Methodology . Theoretical and methodological analysis and generalization were applied in determining the content and problems of mobile learning in the area of tourism and identifying the prospects for the development of travel applications. For designing mobile applications, the iBuildApp tool was chosen. A testing was developed, including the blocks “Fundamentals of tourism activities” (20 points), and “Mobile applications in the field of tourism” (20 points). The study involved 49 students of the Orel State Institute of Culture (the direction of training “Tourism”, profile “Technology and organization of excursion services”). Pearson's chi-squared test was used as a statistical processing method. Results . The ideas of a methodological approach are formulated, reflecting the necessary changes in the system of training specialists in the tourism sector, taking into account the challenges of economic integration, the requirements of a professional standard, and the strategy for the development of tourism in Russia. The difficulties that affect the effectiveness of the inclusion of mobile applications in the training of industry workers are highlighted: dependence on foreign software solutions, the high expense of creating own mobile application and its post-maintenance, and technical failures in the network. Statistically significant differences in the qualitative changes that occurred in the training system were determined. Conclusion . The incorporation of mobile applications in the training of tourism industry specialists advances the quality of their training due to new opportunities for collaboration and project activities, cost optimization, innovative work experience, etc. There are also negative aspects, such as a decrease in the overall level of oral communication, the risks of losing the phone, distraction, and addiction.

Parenthood stressfulness and intensity in the students’ views

Introduction. There is an increase in young people’s reproductive decisions in the form of conscious childlessness, deferred parenthood, and small families. The role of reproductive decision-making in the non-optimistic demographic forecast of the state actualizes scientific research factors and conditions for the emergence of childbearing attitudes. Subjective factors, which determine fertile plans, are no less important than the objective ones (material, social). In the subjective picture of potential parenthood, the ideas about a stressful parenting role are of great importance. High demands are made to it and transmitted at the level of public expectations. This forms intensive education practice and a stable attitude towards the perception of fatherhood and motherhood long before the children’s birth.Aim. The present research aims to study the peculiarities of student ideas about the stressfulness and parental role intensity in the gender factor context and reproductive plans.Methodology and research methods. The sample consisted of 364 childless students (M = 19.43 years). To achieve a study goal, the sample was divided by gender (218 girls and 146 boys) and by orientation towards having children: childlessness (n = 32); large families (n = 75); having few children (n = 257). The following methods and techniques were used: authors’ questionnaire; methodology “Parental Stress Scale” by J. O. Berry & W. H. Jones (1995) in the adaptation of Yu. V. Misiyuk, I. V. Tikhonova (2022); “Intensive Parenting Attitudes Questionnaire” by M. Liss, H. H. Schiffrin, V. H. Mackintosh, H. Miles-McLean, M. J. Erchull (2013) in the adaptation of Yu. V. Misiyuk (2022); the authors’ version of a semi-structured interview, which studies the ideas of young people about the stressors of parental life in different periods of child development and stress intensity. The methods of statistical processing were employed.Results. The authors revealed stressfulness specificity and parental stress intensity, their content depending on the orientation towards childbearing and gender roles. Child-free students associate parenthood with a high level of parental stress. It is unsatisfying, lacks resources, threatens to lose control over one’s own life, and makes high demands on the necessity to stimulate children’s development. Students oriented on having many children demonstrate a balanced view on parenthood stressfulness in terms of resources and costs. Students, focused on having few children, have an idea of moderate parental stressfulness. They point to such possible signs of parental stress as “loss of control” and “parental stressors”.Girls assess a parental stressfulness role higher than boys; they expect a lower satisfaction level, a high stress level during the periods of early and preschool child development. Girls demonstrate the severity of attitudes towards essentialism, and young men towards child-centrism. The essentialisation of parenthood strengthens the ideas about parenthood stressfulness, whereas the attitude towards getting pleasure from parenthood can be a protection factor.Scientific novelty. For the first time, the characteristics of the stress of the parental role and attitudes towards intensive parenthood in the representations of students are studied. Their interrelation is investigated. The presented results reveal the peculiarities of the perception of the tension of the parental role, its saturation with stress factors, taking into account gender and orientation to childbearing.Practical significance. The research outcomes contribute to the understanding of the patterns and factors of the formation of ideas about the stress of parenthood, its role in the reproductive plans of students. Also, the research results can be used in educational organisations to justify education programmes on parenting and psychological support.

INTEGRATION OF MIGRANTS INTO THE COUNTRY’S SOCIAL ENVIRONMENT: THE CASE OF LITHUANIA

Migration is one of today’s most sensitive and relevant topics. In 2022 alone, 32.5 million people worldwide will have left their country due to war, political instability, economic hardship, climate change, and other reasons. In recent years, the constantly growing flow of migrants to developed countries poses increasing challenges to the institutions and organizations of those countries, which are looking for new ways of integrating migrants into the social environment. It is difficult for state institutions that do not have the right tools to assess the integrity of the state, and it is difficult to control the ongoing migration processes and quickly make decisions regarding the increased flows of migrants, which could be solved promptly with minimal use of resources. One of the most important solutions for overcoming the challenges of migration is using a dynamic complex instrument that would allow us here and now to identify the causes of changes and efficiently mobilize the necessary resources to solve the challenges of migration that are usually not planned. The article aims to form a complex evaluation instrument to integrate migrants into the social environment. To achieve the goal, a systematic, comparative analysis of concepts and methods published in the scientific literature, statistical processing, and multi-criteria evaluation methods (COPRAS), and the method of determining weight coefficients (CRITIC) is applied.

US recession prediction using statistical and natural language processing methods

This study mainly predicts the recession in the United States. We build our model based on the data of more than ten recessions experienced by the United States since the mid-20th century. Our research can be divided into two parts, one part is a machine learning model constructed using econometrics theory, and the other part is a text analysis model based on natural language processing (NLP) techniques. We collected quarterly data from January 1, 1950, to September 1, 2020, to examine each historical recessionary period. We select key macroeconomic variables such as real GDP growth rate, unemployment rate, and interest rates as variables to build the machine learning model. Depending on the data type and model accuracy, we adopted three models, Support Vector Classification (SVC), Naive Bayes, and Logistic Regression, where the SVC model has the highest accuracy, above 80%. Regarding NLP models, we choose the reports based on Bank of International Settlements central bank speeches (BIS) to complete the relevant analysis. We evaluate bag-of-words and convolutional neural networks in conjunction with Epoch loss to determine how well the model's predictions match the actual data. Although we have debugged the NLP model many times, its accuracy still needs to be higher than that of the econometric model. How to effectively improve the prediction accuracy of the NLP model will be the main problem we hope to solve in the future.

STUDY OF STRENGTH REDUCTION OF REINFORCED CONCRETE BEAM UNDER FIRE TESTS

The article presents the results of studies of the regularity of changes in the concrete strength of reinforced concrete beams depending on the heating temperature of its inner layers under fire conditions by interpreting the temperature and deformation measurement results. To obtain the data necessary to identify patterns of concrete strength reduction, we developed a method of fire tests that substantiates the experimental base, design, and number of samples, type, number, and location of measuring devices, as well as the method for statistical processing of measurement data. Based on the developed methodology, we conducted fire tests. As a result of the tests, we obtained a set of measurement results in the form of time dependences of temperature indicators at individual cross-section points and the dependence of the maximum beam deflection on time, which are necessary to identify the coefficients of reduction in concrete strength of reinforced concrete beams under fire test conditions. We then used the proposed method to identify regularities in the reduction of concrete strength of a reinforced concrete beam, which includes interpolation using the obtained temperature indicators at individual points of the cross-section of the beam, which allows us to set the temperature at any point of the cross-section at any control time of measurements based on the approximation of isotherms by parabolas with a variable indicator of their degree. At the next stage, to identify the dependence of the concrete strength of reinforced concrete beams, we used a method based on the compilation of systems of equilibrium equations of internal layers in the cross-section of a reinforced concrete beam, in which the unknown values ​​are the coefficients of reduction of concrete strength for a range of temperatures every 100 °С in the range from 20 °С up to 1200 °С, provided that the reduction factor for the specified heating temperature of the inner layer of concrete is determined by linear interpolation. Using the proposed approach, we obtained appropriate results for a reinforced concrete beam subjected to fire tests. The obtained dependences of the strength reduction coefficient were used to evaluate the fire resistance of reinforced concrete beams and crossbars by the calculation method based on the deformation model. By comparing the obtained data with the data from the literature, we established the adequacy of the calculated data based on the relative deviation and Fisher’s test. The totality of the obtained data allows for improving the calculation method for evaluating reinforced concrete crossbars and beams by increasing the accuracy of the data obtained. Keywords: reinforced concrete beam, fire tests, concrete strength reduction coefficient, fire resistance.

ASSESSMENT OF THE INFLUENCE OF CONTAMINATION OF THE BOTTOMHOLE ZONE OF THE FORMATION ON THE PERFORMANCE CHARACTERISTICS OF PRODUCTION WELLS

The reasons for the decrease in productivity of gas wells are characterized. The structure of the formation colmatation parameter is revealed. For the conditions of a model well, using mathematical dependencies, the influence of different values of the radii of the contaminated zone at the bottomhole formation zone, the multiplicity of the permeability coefficient of the contaminated formation zone and different degrees of reduction in reservoir pressure from the initial value on the productivity of gas wells was studied. The research results are presented in the form of graphical dependences of gas flow rate for the initial value of reservoir pressure on the permeability coefficient of the contaminated zone for different radii of the contaminated zone, on the radius of the contaminated zone for different values of the permeability coefficient of the contaminated zone, pressure along the radius of the contaminated zone 0.25, on the radius of the zone pollution of varying degrees of reduction in reservoir pressure according to the multiplicity of the permeability coefficient of the contaminated zone 2. According to the results of studies, with an increase in the multiplicity of the permeability coefficient of the contaminated zone, we will obtain a significant decrease in the gas flow rate, and the gas flow rate, the greater the value of the reservoir pressure. Zone contamination at high values of reservoir pressure has a significant impact on the reduction in gas production. Using the method of statistical processing of calculated data, the average optimal value of the contaminated zone radius was established to be equal to 0.25 for all values of the permeability coefficient of the contaminated zone and the average optimal value of the permeability coefficient of the contaminated zone to be 1.97.

대학 태권도 학생선수의 능력믿음, 운동스트레스, 진로미결정 및 중도탈락의도의 관계

The purpose of this study is to verify the relationships among ability belief, exercise stress, career indecision, and dropout intention of the college taekwondo athletes. College taekwondo athletes were subjected to questionnaire and based on convenience sampling, total of 348 out of 407, excluding 57 samples that were not suitable for analysis were used for final data analysis. For statistical methods for data processing, frequency analysis, reliability analysis, exploratory factor analysis, correlation analysis, and structural equation model analysis were implemented utilizing SPSS 20.0 and AMOS 20.0 programs. The ability belief of college taekwondo athletes had significant impact upon dropout intention, and exercise stress, The exercise stress of college taekwondo athletes had significant impact upon career indecision, and dropout intention, The career indecision of college taekwondo athletes had significant impact upon dropout intention. Ultimately, in order to reduce the dropout of athletes, it suggests the importance of psychological management to increase athletes' ability belief, the creation of a light sports culture to reduce sports stress, and the need for career education considering individual aptitudes and interests.

РАЗВИТИЕ ИНФОРМАЦИОННОЙ КОМПЕТЕНТНОСТИ УЧИТЕЛЕЙ-ЗАОЧНИКОВ ФИЗИЧЕСКОЙ КУЛЬТУРЫ ЯКУТИИ НА ОСНОВЕ ПРОВЕДЕНИЯ КУРСОВ ПОВЫШЕНИЯ КВАЛИФИКАЦИИ

The article presents the need for the organization of advanced training courses in the direction of improving the level of information competence of physical education teachers in secondary schools of Yakutia. The purpose of the study is to substantiate the conduct of advanced training courses aimed at developing the information competence of teachers of physical education in schools of Yakutia by means of digital technologies. The research method is based on the use of the method of expert assessments and statistical processing of quantitative research results. The experiment involved more than 120 teachers of physical education by correspondence, who took advanced training courses on the basis of NEFU and CHGIFKIS from 12 uluses of the republic. As part of the implementation of planned advanced training courses, a characteristic feature of which is the availability of a material and technical base for providing the network and the Internet, a variety of platforms and territorial location. The overwhelming majority of schools in Yakutia are rural (more than 70%), since they function and work in rural settlements. The article updates scientific and methodological approaches to the study of the use of digital technologies and applications conducted for advanced training courses. The research conducted among physical education teachers justifiably testifies to the need to take into account the peculiarities of the educational environment of schools in Yakutia in the development of information competence of physical education teachers. The significance of the study lies in the development of the information competence of part-time physical education teachers using digital technologies and resources in the light of the new requirements of the Federal State Educational Standard.

Assessment of the economic security of Baltic port cities’ competitiveness

City competitiveness is a complex product of local and international conditions, local characteristics, social and economic superstructure, and the actions of individual companies. Although many scientific studies have examined the country’s and urban competitiveness, the competitiveness of port cities still needs to be assessed comprehensively, taking into account their crucial economic role. The purpose of this paper is to evaluate the competitiveness and economic security of the Baltic port cities (Klaipėda, Riga, and Tallinn). Statistical processing and multi-criteria evaluation methods (SAW, COPRAS, and TOPSIS) were chosen to achieve this goal. The comparative analysis showed that the population change in port cities is not significant for the final result of the competitiveness assessment, and the unemployment rate in port cities is lower than in the country. The assessment of the competitiveness of port cities from the point of view of economic security shows (after checking such indicators as unemployment rate, company income, and infrastructure) that Tallinn is the most competitive port city according to the three multi-criteria evaluation methods, while Klaipėda is the least competitive. The assessment was carried out in three stages to monitor changes in the situation of port cities, compared to changes in a certain indicator and the costs of timely solutions or the improvement of the city’s position in relation to other cities.