The development of organizational and managerial skills of future technology and entrepreneurship teachers during professional training

© 2014 Copyright for this article is retained by the author(s). The article aims to elaborate certain patterns of formation of organizational and managerial expertise of future teachers of technology and entrepreneurship. The main study approaches were integrative, expertise and activity approaches defining methodology, content and technology of forming organizational and managerial expertise of future teachers.The presented pattern of organizational and managerial expertise of future technology and entrepreneurship teachers includes the following sections: regulatory and target, theoretical and methodological, algorithmic, procedural and productive-evaluative sections. This article material can be useful for high school professors who offer specific training for future technology and entrepreneurship teachers, for teachers and school managers within specific training courses and when enhancing professional skills of technology and entrepreneurship teachers

A comparison of finely dispersed mineral components in fossil coals of the Kama and Donets basins

This study presents the results of SEM-EDX analysis of the mineral components of coals from the Kama (Volga-Ural region) and Donets basins and discusses the characteristics of the depositional environments and conditions of coalification. The results reveal differences in the mineral composition of coals from these two basins. © 2013 Allerton Press, Inc

Rare-earth mineralization in early Carboniferous coals of the Volga-Ural region

© 2014, Allerton Press, Inc. This study presents new ICP spectroscopy data on lanthanide concentrations in early Carboniferous coal deposits in the Volga-Ural region. The results confirmed an overall LREE over HREE enrichment and emphasized the role of carbonate host strata as a major factor that is responsible for REE enrichment and geochemical anomalies. The results of this study were also used to identify the modes of REE occurrences in the organic and inorganic constituents of coal

Giant Magnetoresistance Oscillations Induced by Microwave Radiation and a Zero-Resistance State in a 2D Electron System with a Moderate Mobility

The effect of a microwave field in the frequency range from 54 to 140 $\mathrm{GHz}$ on the magnetotransport in a GaAs quantum well with AlAs/GaAs superlattice barriers and with an electron mobility no higher than $10^6$ $\mathrm{cm^2/Vs}$ is investigated. In the given two-dimensional system under the effect of microwave radiation, giant resistance oscillations are observed with their positions in magnetic field being determined by the ratio of the radiation frequency to the cyclotron frequency. Earlier, such oscillations had only been observed in GaAs/AlGaAs heterostructures with much higher mobilities. When the samples under study are irradiated with a 140-$\mathrm{GHz}$ microwave field, the resistance corresponding to the main oscillation minimum, which occurs near the cyclotron resonance, appears to be close to zero. The results of the study suggest that a mobility value lower than $10^6$ $\mathrm{cm^2/Vs}$ does not prevent the formation of zero-resistance states in magnetic field in a two-dimensional system under the effect of microwave radiation.Comment: 4 pages, 2 figur