Опыт использования сетевого курса «Физика» для студентов, обучающихся по дистанционной технологии

The implementation of web course on discipline of Physics into distance learning technologies is discussed. The main stages of web course development and implementation into the educational process have been considered. The web course structure is comprehensive and includes theoretical materials, practical training, and laboratory work. It is shown than implementation of web course into distance learning technologies promotes the accessibility of high quality education for students.Статья посвящена применению сетевого курса по дисциплине «Физика» для студентов, обучающихся по дистанционной технологии. Рассмотрены основные этапы разработки и внедрения сетевого курса в образовательный процесс. Структура сетевого курса носит комплексный характер, включающий в себя теоретический материал, практические занятия и лабораторные практикум. Показано, что внедрение сетевых курсов с использованием дистанционных образовательных технологий способствует обеспечению доступности качественного образования студентов

Activation of learning and creative activity of the vocational pedagogical university students

The relevance of the problem under study is based on the society’s demand for training students - future professional training teachers ready to solve in a creative manner a wide range of professional and pedagogical tasks, as well as to develop professionally-oriented creative work in the process of training; it is also caused by the insufficient extent of the prior research within the vocational training theory of scientific and methodological mechanisms required for implementing this process. The purpose of the article is to develop a conceptual structural model of professionally-oriented learning and creative activity of the vocational pedagogical university students. Leading method for studying this problem is modelling which allows to consider this problem as the process of goaloriented and deliberate acquiring by future professionals the creative approaches to implementation of professional activity. The article presents a structural model of learning and creative activity of vocational pedagogical university students, justifies the necessity to single out in the structure of the students’ learning and creative activity three interconnected components (creative, professional-pedagogical and personal-acmeological), proves the productivity of activating the learning and creative activity of the vocational pedagogical university students by organizing it as quasi-professional process of searching and solving professional tasks which are subjectively and objectively new, on the basis of using synectics including association methods of activating creative thinking integrated into the its structure. The article can be useful for teachers within the vocational and pedagogical education system, as well as for professionals who develop creative abilities of students based on the heuristic creativity methods. © 2016 Krayukhina et al

Exact solutions for supersymmetric stationary black hole composites

Four dimensional N=2 supergravity has regular, stationary, asymptotically flat BPS solutions with intrinsic angular momentum, describing bound states of separate extremal black holes with mutually nonlocal charges. Though the existence and some properties of these solutions were established some time ago, fully explicit analytic solutions were lacking thus far. In this note, we fill this gap. We show in general that explicit solutions can be constructed whenever an explicit formula is known in the theory at hand for the Bekenstein-Hawking entropy of a single black hole as a function of its charges, and illustrate this with some simple examples. We also give an example of moduli-dependent black hole entropy.Comment: 13 pages, 1 figur

Studying microstructure of sintered magnets Co-25% Sm

Metallographic study of sintered rare-earth Co- 25% Sm magnets microstructure of KS-25 brand was carried out by scanning electron force microscopy (EDS-analysis). A dendritic structure with three phases was found: branches of dendrites are SmCo5; interdendritic space is a mixture of two phases SmCo5 and Sm2Co17. Crystals of 1-5 μm of Zr5Co3FeSm compound and inclusions of Sm2O3 samarium of a globular form of 2-10 μm in size were founded also in the microstructure. Study of the domain structure on surfaces perpendicular to magnetization axis by magnetic force microscopy (MFM) showed presence of strong magnetocrystalline anisotropy. Comparison of magnetic images with electron microscopic images of surface made it possible to conclude that SmCo5 dendrites correspond to large domains ∼ 30-50 μm in size and the interdendritic space consisting of a mixture of two phases SmCo5 and Sm2Co17 correspond to a domain structure in labyrinth form with a size of ∼ 3-5 μm. © 2019 Published under licence by IOP Publishing Ltd.Government Council on Grants, Russian Federation: № 02.Authors are grateful for the support of experimental works by Act 211 Government Russian Federation, contract № 02.A03.21.0006

STU Black Holes and String Triality

We find double-extreme black holes associated with the special geometry of the Calabi-Yau moduli space with the prepotential F=STU. The area formula is STU-moduli independent and has ${[SL(2,Z)]}^3$ symmetry in space of charges. The dual version of this theory without prepotential treats the dilaton S asymmetric versus T,U-moduli. We display the dual relation between new (STU) black holes and stringy (S|TU) black holes using particular Sp(8, Z) transformation. The area formula of one theory equals that of the dual theory when expressed in terms of dual charges. We analyse the relation between (STU) black holes to string triality of black holes: (S|TU), (T|US), (U|ST) solutions. In the democratic STU-symmetric version we find that all three S and T and U duality symmetries are non-perturbative and mix electric and magnetic charges.Comment: 12 pages, 2 Postscript figures, ref.added, minor corrections, version to appear in Phys. Rev.

The Low-Temperature Swirling-Type Furnace with the Air Boiler for the IGCC Compilation Possibility Analysis

The article considered the use of low-temperature swirling-type technology, for its application in the air-boiler design. The air boiler is one of the key elements in the scheme of hybrid integrated gasification combined cycle with external fuel combustion based on processes of coal heat treatment and "external" combustion of fuel. The scheme of the air boiler was chosen after analysis.В работе было рассмотрено использование низкотемпературной вихревой технологии, для её применения в схеме воздушного котла. Воздушный котел является одним из ключевых элементов в схеме гибридной ПГУ-ВЦГ с внешним сжиганием топлива на основе процессов термообработки угля и «внешнего» сжигания топлива. После анализа была выбрана схема воздушного котла

SWIRLING-TYPE FURNACE TEMPERATURE FIELD MODELING

The model of swirling-type furnace was created in this paper. The model was calculated using CFD–modeling. The influence of flue gas recirculation temperature on combustion gases temperature was analyzed.В работе была создана модель низкотемпературной вихревой топки. Модель рассчитана с помощью CFD–моделирования. Проанализировано влияние температуры газов рециркуляции на температуру продуктов сгорания

Measurement of the analyzing powers in pd elastic and pn quasi-elastic scattering at small angles

The analyzing powers in proton-deuteron elastic and proton-neutron quasi-elastic scattering have been measured at small angles using a polarized proton beam at the COSY storage ring incident on an unpolarized deuterium target. The data were taken at 796MeV and five higher energies from 1600MeV to 2400MeV. The analyzing power in pd elastic scattering was studied by detecting the low energy recoil deuteron in telescopes placed symmetrically in the COSY plane to the left and right of the beam whereas for pn quasi-elastic scattering a low energy proton was registered in one of the telescopes in coincidence with a fast scattered proton measured in the ANKE magnetic spectrometer. Though the experiment explores new domains, the results are consistent with the limited published information.Comment: 10 pages with 8 figure