Innovation Potential of Acmeological Approach to Teaching Staff Training

The article deals with the conditions of the formation of innovative competences of the teachers and students. The full view of the content of innovation in higher education, working conditions and factors of its optimization can be formed on the basis of the acmeological approach. Acmeology focuses on the allocation of productivity factors that promote the development of the object, definition of the strategies to achieve qualitative results, which can be relied upon in choosing technologies and solutions to educational problems. The acmeological approach allows to optimally realize the innovative potential of the professional development to its best.В статье рассматриваются условия формирования инновационных компетенций преподавателей и студентов. Целостное представление о содержании инновационной деятельности в вузах, условиях и факторах ее оптимизации может быть сформировано на основе акмеологического подхода. Акмеология ориентирует на выделение факторов продуктивности, стимулирующих развитие объекта, определение стратегий достижения качественного результата, на которые можно опираться в выборе технологий и способов решения педагогических задач. Акмеологический подход позволяет оптимально реализовывать инновационный потенциал профессионального развития

Research of collision probability for small bodies in the asteroid belt of the Solar system by numerical methods

В данном исследовании для определения вероятности столкновения астероидов друг с другом используется метрика пространства кеплеровых орбит.In this research the metric in the space of Keplerian orbits is used to determine the collision probability for asteroids with each other

Low heat conduction in white dwarf boundary layers?

X-ray spectra of dwarf novae in quiescence observed by Chandra and XMM-Newton provide new information on the boundary layers of their accreting white dwarfs. Comparison of observations and models allows us to extract estimates for the thermal conductivity in the accretion layer and reach conclusions on the relevant physical processes. We calculate the structure of the dense thermal boundary layer that forms under gravity and cooling at the white dwarf surface on accretion of gas from a hot tenuous ADAF-type coronal inflow. The distribution of density and temperature obtained allows us to calculate the strength and spectrum of the emitted X-ray radiation. They depend strongly on the values of thermal conductivity and mass accretion rate. We apply our model to the dwarf nova system VW Hyi and compare the spectra predicted for different values of the thermal conductivity with the observed spectrum. We find a significant deviation for all values of thermal conductivity that are a sizable fraction of the Spitzer conductivity. A good fit arises however for a conductivity of about 1% of the Spitzer value. This also seems to hold for other dwarf nova systems in quiescence. We compare this result with thermal conduction in other astrophysical situations. The highly reduced thermal conductivity in the boundary layer requires magnetic fields perpendicular to the temperature gradient. Locating their origin in the accretion of magnetic fields from the hot ADAF-type coronal flow we find that dynamical effects of these fields will lead to a spatially intermittent, localized accretion geometry at the white dwarf surface.Comment: 8 pages, 5 figs, to appear in Astronomy & Astrophysic

Hysteresis in spectral state transitions - a challenge for theoretical modeling

Many low-mass X-ray binaries show both hard and soft spectral states. For several sources the transitions between these states have been observed, mostly from the soft to the hard state during a luminosity decrease. In a few cases also the transition from the hard to the soft state was observed, coincident with an increase of the luminosity. Surprisingly this luminosity was not the same as the one during a following change back to the hard state. The values differed by a factor of about 3 to 5. We present a model for this hysteresis in the light curves of low-mass X-ray binaries (sources with neutron stars or black holes). We show that the different amount of Compton cooling or heating acting on the accretion disk corona at the time of the transition causes this switch in the accretion mode at different mass accretion rates and therefore different luminosities. The inner disk during the soft state provides a certain amount of Compton cooling which is either not present or much less if the inner region is filled with a hot advection-dominated accretion flow (ADAF) that radiates a hard spectrum.Comment: 8 pages, 2 figures, accepted for publication in Astron. Astrophy

Features of the metal flow in the cylindrical channel of the matrix at the compacting with intermixing

Розглянуто особливості течії металу в циліндричному каналі матриці в новому процесі пресування з перемішуванням. При русі всередині робочого каналу метал обтікає циліндричний інструмент, який обертається навколо своєї осі. Визначення швидкостей переміщення матеріальних часток виконано з використанням загальних рівнянь механіки суцільних середовищ і гідродинаміки, а також декомпозиції кінематики процесу деформування. Загальне рішення для поля швидкостей отримано на основі розгляду складових процесів обтікання циліндра суцільний середовищем з урахуванням обертання інструменту. Показано, що отримання компоненти вектора швидкостей дозволяє виконати аналіз напружено-деформованого стану та енергосилових параметрів процесу пресування з перемішуванням при використанні замкнутої системи рівнянь теорії пластичної течії металів. Застосування нового процесу забезпечує отримання великих деформацій зсуву при пресової обробці металів і сплавів, у тому числі в твердожидком стані і для порошкових матеріалів.Features of the metal flow in the cylindrical channel of the matrix in new process of pressing with intermixing are considered. At the motion in the working channel the metal flows around the cylindrical instrument which has axial rotation. Definition of velocity of travel of the particles is executed with use of the general equations of a continuum mechanics and hydrodynamics, and also decomposition of kinematics of the deformation process. The general solution for the velocity field is received on the basis of consideration of the flow around of the cylinder by the continuum mechanics taking into account tool rotation. It is shown that deriving vector component of velocities allows making the analysis of the intense-deformed state and of the energy-power parameters of pressing process with intermixing at use of the equations closed system of the theory plastic flow of metals. Application of new process secures deriving of major shear strains at the press processing of the metals and alloys, including the solid-liquid state and for powder materials.Рассмотрены особенности течения металла в цилиндрическом канале матрицы в новом процессе прессования с перемешиванием. Получено общее решение для поля скоростей перемещений на основании рассмотрения составляющих процессов обтекания цилиндра сплошной среды вследствие вращения инструмента. Показано, что полученные компоненты вектора скоростей позволяют выполнить анализ напряженно-деформированного состояния и энергосиловых параметров процесса. Применение нового процесса обеспечивает получение больших деформаций сдвига при прессовой обработке металлов и сплавов, в том числе в твердожидком состоянии и для порошковых материалов

The change from accretion via a thin disk to a coronal flow: dependence on the viscosity of the hot gas

We study the transition from the geometrically thin disk to the hot coronal flow for accretion onto black holes. The efficiency of evaporation determines the truncation of the geometrically thin disk as a function of the black hole mass and the mass flow rate in the outer disk. The physics of the evaporation was already described in detail in earlier work (Meyer et al. 2000b). We show now that the value of the viscosity parameter for the coronal gas has a strong influence on the evaporation efficiency. For smaller values of the viscosity evaporation is less efficient. For a given mass flow rate from outside the geometrically thin disk then extends farther inward. Spectral transitions between soft and hard states are then expected for different mass flow rates in the outer disk. The physics is the same for the cases of stellar and supermassive black holes systems.Comment: 6 pages, 1 figure, accepted for publication in A&