The electronic learning system as a means of forming professional competencies among university students

© 2015 by the author(s). The purpose of this article is aimed at the development of pedagogical tools and methods of forming students' competencies in the course of higher education. The submitted paper presents the potential of information technology in forming professional competencies of the university students providing the students' classroom and individual organization. The grounds for the presented paper have become the ideas of competence-based approach, the system of modern didactic principles that intensify the students' learning and cognitive activities. The article describes the structure of modern e-learning system that satisfies the federal state educational standards and contributes to the students' professional competencies. This article is intended for the educators, researchers, heads of educational institutions engaged in the development of academic syllabi and pedagogical tools to provide university students with professional competencies

THEORETICAL AND EXPERIMENTAL ANALYSIS OF THE FORMATION OF CASTING WITH VERTICAL CONTINUOUS CASTING OF CAST IRON

Theoretical and experimental studies of the process of obtaining iron billets with vertical semicontinuous casting were considered

THE ANALYSIS OF THE TENSIONS WORKING IN CASTING AT VERTICAL SEMI-CONTINUOUS MOLDING OF CAST IRON

Matters on formation of casting at continuous molding of cast iron, arising tensions and influence of some factors on the size of these tensions are considered

Luminescence and EPR spectroscopy of neutron-irradiated single crystals of magnesium aluminium spinel

Neutron irradiated single crystals of stoichiometric MgAl2O4 and MgAl2O4:Mn2+ (0.15 wt. %) were studied using the methods of luminescence spectroscopy and versions of electron paramagnetic resonance. In stoichiometric MgAl2O4:Mn2+ single crystals, the transition of a part of manganese impurity ions from tetrahedral to octahedral coordination, caused by irradiation with fast fission neutrons, is detected using photoluminescence spectra. This fact confirms the partial inversion of a normal spinel due to neutron-irradiation. Using pulse EPR technique it is shown that an electron in the field of oxygen vacancy (i.e. from neutron-irradiation induced F+ centres, which are spatially separated from each other) is in hyperfine interaction only with neighbouring 27Al nuclei with nuclear spin 5/2. •Photo-, cathodo- and thermally stimulated luminescence; conventional and pulse EPR.•In irradiated spinel Mn2+ ions are moved from tetrahedral to octahedral interstices.•An electron from an F+ centre is in superhyperfine interaction with 27Al nuclei