RESISTANCE TO THE CHANGES IN EDUCATIONAL ORGANIZATION

The concepts of «change», «resistance to change», the problem of introducing changes in the educational organization associated with resistance from employees have considered. The main types of changes, the key points concerning their implementation, the model of successful management and regulation of changes have examined, and tips to improve the effectiveness of its application have adduced. Possible options for reducing resistance on the part of employees and motivational components of the change management model have suggested

Estimating the First-year Corrosion Losses of Structural Metals for Continental Regions of the World

The knowledge of the first-year corrosion losses of metals (K1) in various regions of the world is of great importance in engineering applications. The K1 values are used to determine the categories of atmospheric corrosivity, and K1 is also the main parameter in models for the prediction of long-term corrosion losses of metals. In the absence of experimental values of K1, their values can be predicted on the basis of meteorological and aerochemical parameters of the atmosphere using the dose-response functions (DRF). Currently, the DRFs presented in ISO 9223:2012(E) /1/ standard are used for predicting K1 in any region of the world, along with the unified DRFs /2/ and the new DRFs /3/. The predicted values of corrosion losses (K1pr) of carbon steel, zinc, copper and aluminum obtained by various DRFs for various continental regions of the world are presented. In this work we used the atmosphere corrosivity parameters and experimental data on the corrosion losses of metals for the first year of exposure (K1exp) for the locations of the tests performed under the international UN/ECE program, the MICAT project, and the Russian program. For the first time, a comparative assessment of the reliability of various DRFs is given by comparing the values of K1pr and K1ex using graphical and statistical methods. The statistical indicators of reliability of predicting the corrosion losses of metals are calculated for various categories of atmosphere corrosivity. It is shown that the new dose-response functions offer the highest reliability for all categories of atmosphere corrosivity

STUDY OF “PUPIL – TEACHER” CONFLICT AT SCHOOL

The article is devoted to the issues of conflict interaction in the “pupil – teacher” system in an educational institution. The purpose of the article is to consider the voiced problem through the prism of a socio-pedagogical approach, taking into account not only the state of society, but also the educational potential of the family, as well as the structure of the class team and the personal age characteristics of schoolchildren. Special attention has been paid to the negative side of the conflict, which affects the weak psyche of the pupil, as well as the mental health of the teacher, which ultimately worsens the psychological comfort at school and interferes the educational process. It has been shown that in conflict situation teacher`s behavior in most cases relates to such types of response as “repressive measures” and “ignoring the conflict”. In conflict situations in the “pupil – teacher” system, teachers use external suppression, as well as apply sanctions. Conflicts in the “pupil – teacher” system from the point of view of age characteristics of schoolchildren have been considered. The article is intended for employees of educational organizations and those interested in conflict issues

Experimental investigation of the radial structure of energetic particle driven modes

Alfv\'en eigenmodes (AEs) and energetic particle modes (EPMs) are often excited by energetic particles (EPs) in tokamak plasmas. One of the main open questions concerning EP driven instabilities is the non-linear evolution of the mode structure. The aim of the present paper is to investigate the properties of beta-induced AEs (BAEs) and EP driven geodesic acoustic modes (EGAMs) observed in the ramp-up phase of off-axis NBI heated ASDEX Upgrade (AUG) discharges. This paper focuses on the changes in the mode structure of BAEs/EGAMs during the non-linear chirping phase. Our investigation has shown that in case of the observed down-chirping BAEs the changes in the radial structure are smaller than the uncertainty of our measurement. This behaviour is most probably the consequence of that BAEs are normal modes, thus their radial structure strongly depends on the background plasma parameters rather than on the EP distribution. In the case of rapidly upward chirping EGAMs the analysis consistently shows shrinkage of the mode structure. The proposed explanation is that the resonance in the velocity space moves towards more passing particles which have narrower orbit widths.Comment: submitted to Nuclear Fusio

Delivery features of pregnant women with a uterine scar

Vaginal delivery after a Caesarean section remains a controversial topic: there is a lack of reliable data to help doctors and women in labour to determine the best option for delivery during subsequent pregnancy. The review analyzed and summarized the results of the studies devoted to childbirth of pregnant women with scars on the uterus, considered the advantages and disadvantages of vaginal childbirth and repeat Caesarean section, the frequency of complications in the attempt of vaginal childbirth in women with scars on the uterus has been assessed. The modern medical literature available in open sources has been studied: Russian-language scientifc electronic libraries eLibrary and CyberLeninka, Englishlanguage database of medical and biological publications PubMed. It is necessary to consider the data of anamnesis and clinical-instrumental data when choosing the best management tactics of pregnancy and delivery for women with scars on the uterus. Attempting to deliver vaginally helps to reduce maternal and neonatal morbidity, and a large number of studies on this issue should help to reduce the number of unwarranted repeat Caesarean sections. Vaginal delivery after a Caesarean section is an opportunity to avoid severe abdominal surgery and negative consequences associated with repeated Caesarean sections

ОПРЕДЕЛЕНИЕ ХИНИНА В БЕЗАЛКОГОЛЬНЫХ НАПИТКАХ МЕТОДОМ ФЛУОРИМЕТРИИ

The fluorimetric method of analysis has been proposed for the qualitative and quantitative determination of the food flavoring additive quinine in the tonic water. The fluorimetric method of analysis has high sensitivity, selectivity and express speed compared to the other methods. The optimal conditions for the quinine fluorimetric determination in the soft drinks were found: solvent - 0.01 M sulfuric acid, excitation wavelength of 353 nm, luminescence wavelength of 452 nm, strobe parameters - signal delay of 0.85 μs, signal duration of 21.25 μs. To increase the sensitivity of the developed method, quinine luminescence was studied in the various concentrations of sulfuric acid from 0.005 to 1.000 M, and the quantum yield of quinine luminescence in all the investigated concentrations of sulfuric acid was calculated. It has been established that the highest quinine luminescence intensity, the highest quantum yield, and the lowest solvent background signal were observed in 0.01 M H2SO4. The influence of the related compounds of the food matrix on the fluorimetric determination of quinine was studied. It has been established that the content of such components as sugar and citric acid in the soft drinks does not affect the luminescent signal of quinine. The detection limit of quinine was calculated, which amounted to 0.0019 mg/dm3. In order to verify the correctness of the fluorimetric method, the results were compared with the spectrophotometric method (maximum absorption of quinine at 347 nm). The results obtained by the two methods were in good agreement, and the detection limit of the fluorimetric method was higher compared to the known works. The proposed technique could be used to control the quality and safety of the soft drinks. Keywords: quinine, fluorimetry, tonic water, luminescence quantum yield, strobe parameters.DOI: http://dx.doi.org/10.15826/analitika.2019.23.3.007(Russian)A.А. Nikolaeva, A.A. Ivanov, E.I. Korotkova National Research Tomsk Polytechnic University,Lenina prosp., 30 Tomsk, 634050, Russian FederationФлуориметрический метод предложен для качественного и количественного определения пищевой вкусоароматической добавки хинина в напитках-тониках. Выбор данного метода обусловлен его высокой чувствительностью, селективностью и экспрессностью по сравнению с другими методами. Найдены оптимальные условия флуориметрического определения хинина в напитках: растворитель – 0.01 М серная кислота, длина волны возбуждения 353 нм, длина волны люминесценции 452 нм, параметры строба – задержка сигнала 0.85 мкс, длительность сигнала 21.25 мкс. Для увеличения чувствительности разрабатываемой методики проведены исследования люминесценции хинина и определены квантовые выходы люминесценции хинина в различных концентрациях серной кислоты от 0.005 до 1.000 М. Установлено, что наибольшая интенсивность люминесценции хинина, наибольший квантовый выход и наименьший сигнал фона растворителя наблюдается в 0.01 М H2SO4. Исследовано влияние мешающих компонентов пищевой матрицы на флуориметрическое определение хинина. Установлено, что сахар и лимонная кислота не влияют на люминесцентный сигнал хинина. Рассчитан предел обнаружения хинина, который составил 0.0019 мг/дм3. Для проверки правильности флуориметрической методики проведено сравнение результатов со спектрофотометрической методикой определения хинина в напитках (максимальное поглощение хинина при 347 нм).  Результаты, полученные двумя методиками, хорошо согласуются, при этом предел обнаружения флуориметрического метода ниже по сравнению с известными методами. Предложенная методика может быть использована для контроля качества и безопасности безалкогольных напитков.Ключевые слова: хинин, флуориметрия, напитки-тоники, квантовый выход люминесценции, параметры стробаDOI: http://dx.doi.org/10.15826/analitika.2019.23.3.00