The matter of integrating digital technologies in education particularly during massive transition to distance learning is more urgent than ever before. Upgrading of teachers’ education and skills in the areas of online course, online course production and its incorporation in the educational programs are the key priorities for higher education system. The article presents Far Eastern Federal University experience in developing online course «English grammar for beginners». It describes the relevance of the course production, aim and objectives, grammar topics and learners’ language level. The phases of work and basic steps, online course structure, assignments types, the content of lecture videos are fully depicted in the paper. The article closes with authors’ recommendations on working at the online course production within the educational process in the universities.
An experiment has been carried out aimed at producing a low-cost tool material which would have an extra hard surface and a crack resistant base phase. A double-layer gradient alloy was produced out of powders with excessive and insufficient carbon obtained from alloys VK8 and VK15 by electrospark dispersion. To obtain the initial powder, plates of the VK8 alloy scrap material initially containing 5.6% of carbon were dispersed in oil. This caused excessive carbon (3.1%), which was then partially reduced to 0.6% by CO2 heat treatment. The VK15 alloy with 5.3% of initial carbon was dispersed in water to achieve an insufficient carbon concentration (2.8 %) in it. It was then heat treated in the CO atmosphere to partially lower the carbon concentration to 0.7%. The dispersed powder was found to consist of spherical microparticles, as well as agglomerated nanoparticles obtained through crystallization of liquid and vapour phases. Mixing of tungsten and cobalt phases resulted in much smaller diameters of WC grains in the newly sintered alloy. This combination of deviations in the carbon concentration between the layers helped maintain the unequal concentration of cobalt (8 and 15%) and thus ensure an extra hard surface (1820HV) and a crack resistant base (14.2 MPa√m). Analysis was carried out to estimate the power costs, as well as the performance of the laboratory unit used for electrospark dispersion of hard alloys.
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