Kurgan State University

An angular-velocity stabilizer is developed based on the fact that angular momentum is a function of the radius vector (the distance to the center of rotation), the mass of the load, and the peripheral (linear) velocity. When increasing the angular momentum by increasing the radius vector, it is possible to maintain a constant rotational speed, while the peripheral (linear) speed also changes.

Aim . To carry out an economic and statistical analysis of the factors influencing the formation and use of the region’s labor potential in order to identify the general trend in the development of this indicator and its impact on the sustainable and dynamic development of the regional economy. Methodology . During the research, the following scientific methods were used: dialectical – in assessing the formation of labor potential); economic and statistical – in determining the dynamics and trends of labor development; monographic – in studying the theoretical foundations and determining the actual level of labor availability. Results . The study discusses approaches to the interpretation of the definitions of “human capital”, “human resources” and “labor potential”. The factors that have a direct impact on the formation and use of labor resources in the Russian economy in general and the Kurgan region in particular are considered. The relationship between the change in the number of economically active population and the state of the region’s economy is shown, and trends in the development of labor potential are identified. Research implications lies in the choice of the research subject, by which the authors understand the labor potential of the subject of the Russian Federation, which is formed in certain socio-economic and historical conditions. Based on the analysis, trends in the socio–economic development of the Kurgan region have been identified and the interdependence of the region’s development and the state of its labor potential has been argued. The field of application of the research results is the sphere of regional management.

Background. The article presents the results of the development and psychometric validation of the author’s methodology for express diagnostics of university students’ academic well-being. Assessing students’ academic well-being is a pressing issue for university psychological services and youth policy departments. This is essential for the effective planning and implementation of educational and psycho-preventive work at universities. Objectives. The focus of the study is on the development and psychometric substantiation of the methodology for express diagnostics of university students’ academic well-being. Study Participants. The study was conducted on a sample of 754 undergraduate, specialist and master’s students of different years. Mage = 20.24; SD = 1.88; (girls were 86.73%, and boys 13.27% of the sample). Methods. The methodology consists of 21 items, making up six content scales of well-being in the situations of academic interaction that are significant for students. The scales included assessments of the situations in the classroom -with teachers of disciplines in the specialty, with teachers of other disciplines, with other students, with the university administration, and in extracurricular activities. To test convergent validity, the Well-Being questionnaire developed by Butler and Kern namely the PERMA-Profiler (adapted by Isaeva et al.) and the Shamionov and Butler method for diagnosing subjective well-being of an individual were used. Results. The questionnaire showed good internal consistency: Cronbach’s alpha is 0.85; RMSEA = 0.08; CFI = 0.93; AGFI = 0.8; GFI = 0.86; CMIN/df = 3.9; TLI = 0.91; SRMR = 0.04. Test-retest reliability r = 0.72 at p < 0.05. Validity is confirmed by correlations (r = 0.35 to 0.5 at p < 0.05) with thematically close diagnostic constructs. Conclusions. The questionnaire can be used in universities as a tool for monitoring students’ academic well-being for both cross-sectional and longitudinal studies; as well as for establishing the characteristics of academic well-being in different groups.

В статье публикуются две новые находки медных подражаний сасанидским драхмам типа Хосрова II из Бурабайского района Акмолинской области и определяется их место среди сасанидских монет и подражаний Урало-Сибирского региона. В корпус включены 17 экземпляров из Северного Казахстана, Южного Зауралья и Западной Сибири, происходящих из случайных находок, погребальных и поминальных комплексов. Сопоставление нумизматических определений с датировками археологических контекстов показывает, что время чеканки монет нередко значительно предшествовало их депонированию. Материалы Крохалевки-13, Умны-2, Священной Кедровой Рощи и Горного-10 фиксируют вторичное использование монет в составе костюма, в качестве подвесок и поминальных приношений. Бурабайские экземпляры отличаются отсутствием следов перфорации, однако из-за недокументированного контекста их функция остаётся неопределённой; основной этап поступления сасанидских монет и их подражаний связывается с многоступенчатыми степными и лесостепными коммуникациями второй половины VI–VII в.; их вторичное использование продолжалось в VIII–IX вв.

The Y2OSe2 and Y2O2Se phases should be considered as candidate phosphor and functional ceramic hosts. More than 20 samples have been studied in the Y2Se3-Y2O3 system and characterized by X-ray powder diffraction (XRD), differential thermal analysis (DTA), visual thermal analysis (VTA), scanning electron microscopy (SEM), microstructure observation (MS), and microhardness measurements. A phase diagram of the Y2Se3-Y2O3 system has been designed for the first time using physicochemical analytical methods. Four invariant phase transformations occur in the system. The Y2OSe2 phase is orthorhombic (Pnma), has the microhardness H = 490 +/- 30 HV, and melts incongruently at 1470 +/- 15 degrees C to form Y2O2Se crystals and a melt. The Y2O2Se phase is trigonal (P-3m1), has the microhardness H = 780 +/- 25 HV, and melts congruently at 2000 +/- 20 degrees C. Two eutectic points exist in the system: (1) 0.505Y2Se3 : 0.495Y2OSe2 (16.5 mol % Y2O3), melting at 1350 +/- 10 degrees C; and (2) 0.615Y2O2Se : 0.385Y2O3 (79.5 mol % Y2O3), melting at 1790 +/- 20 degrees C. The Y2Se3, Y2OSe2, and Y2O2Se phases have similar morphologies in powders and in melt-crystallized primary crystals. The liquidus line of the system has been calculated by the Redlich-Kister polynomial and verified by thermoanalytical experiments.