Using of Different Approaches Towards Grounding the Health-saving Technologies of Students Studying

Дослідження фізичного розвитку, стану фізичного здоровʼя, тривалості режиму праці й відпочинку школярів автори розглядають як один із важливих підходів до обґрунтування та реалізації здоров’язберігальних технологій навчання студентів. У процесі наукової роботи, при виконанні кваліфікаційних робіт, самостійної роботи й під час проходження практики в школі студенти використовують теоретичні знання та практичні вміння діагностики фізичного здоров’я, а в процесі аналізу отриманих результатів переконуються в необхідності проведення оздоровчої роботи. Це спонукає їх до вивчення здоров’язберігальних технологій навчання, які будуть сприяти покращенню показників здоров’я. Автори подають результати вивчення фізичного розвитку, функціонального стану, серцевосудинної й дихальної систем, рівня соматичного (фізичного) здоров’я 26 учнів 4-го класу (10-річного віку). На основі використання комплексу антропометричних, фізіометричних досліджень, хронометражу діяльності учнів, педагогічних, статистичних методик автори роблять висновок про те, що 30,7 % школярів мають рівень фізичного розвитку нижчий від середнього й низький, у 36,6 % учнів визначається дисгармонійний розвиток. У структурі захворювання 75 % займають захворювання ендокринної системи (зоб). 53,8 % обстежених учнів за рівнем соматичного здоров’я належать до низького й нижчого за середній рівнів, вони потрубують проведення оздоровчої роботи. Research of physical development, state of physical health, duration of work and rest regime of pupils at school is considered to one of the most important approaches towards grounding and realization of health-saving technologies of students studying according to the authors of the article. In the process of studying, while doing qualificational works, independent work and while passing practice at schools students are using theoretical knowledge and practical skills of physical health diagnosing, and during the process of analysis of the obtained results they receive evidence that conducting of health-improving work is needed. This stimulates them to studying of health-saving technologies that will assist in improving of health results. The authors give the results of research of physical development, functional condition, cardiovascular and respiratory systems, level somatic (physical) health 26 pupils of the 4th form (10-years old). On the basis of usage of a complex of anthropometric data, physiometric reaseach, timing of pupils activities, pedagogic and statistic methods the authors come to a conclusion that 30,7 % of pupils have level of physical development that is lower than average and low, 36,6 % of pupils are characterized as having disharmonic development. In the structure of sickness rate 75 % have the illnesses of endocrine system (goitre), 53,8 % of pupils according to the level of somatic health are having level that is low or lower than average, they need conducting health-improving work

POWERFUL SOURCES OF PULSE HIGH-FREQUENCY ELECTROMECHANICAL TRANSDUCERS FOR MEASUREMENT, TESTING AND DIAGNOSTICS

Aim. Development of powerful current radio pulses generators (CRPG) for powering high-frequency electromechanical transducers based on IGBT transistors. Methodology. To carry out the research, the statements of the magnetic and electromagnetic fields interaction with electric and ferromagnetic material, electric circuits, structure of radio electronic devices theory were used. Results. The main provisions for creating powerful broadband generators for powering electromechanical transducers based on IGBT transistors are determined. It is shown that the generators intended for use in measurements, testing and diagnostics should provide adjustment of the frequency and duration of the output current pulses, and also provide current in the transducer inductor of several hundred amperes. The connection between the power frequency of the resonant electromechanical transducer and the gap between the transducer and the surface of the metal being diagnosed is established. A CRPG variant for powering electromechanical transducers in the frequency range 1 ... 3 MHz and the duration of current pulses of 1 ... 20 periods of the filling frequency is developed and manufactured. The peak current in the inductor of a high-frequency electromechanical transducer has reached 450 A. Novelty. For the first time, the possibility of using powerful IGBT transistors in electronic devices working in a key mode in push-pull circuits for feeding high-frequency electromechanical transducers is shown. Practical value. Using the results obtained will allow the creation of new instruments for measurement, control and diagnostics with wider characteristics

A systematic global stocktake of evidence on human adaptation to climate change

Assessing global progress on human adaptation to climate change is an urgent priority. Although the literature on adaptation to climate change is rapidly expanding, little is known about the actual extent of implementation. We systematically screened >48,000 articles using machine learning methods and a global network of 126 researchers. Our synthesis of the resulting 1,682 articles presents a systematic and comprehensive global stocktake of implemented human adaptation to climate change. Documented adaptations were largely fragmented, local and incremental, with limited evidence of transformational adaptation and negligible evidence of risk reduction outcomes. We identify eight priorities for global adaptation research: assess the effectiveness of adaptation responses, enhance the understanding of limits to adaptation, enable individuals and civil society to adapt, include missing places, scholars and scholarship, understand private sector responses, improve methods for synthesizing different forms of evidence, assess the adaptation at different temperature thresholds, and improve the inclusion of timescale and the dynamics of responses