204 research outputs found

    Opportunities and disadvantages of distance education in the process of studying of military specialists

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    In the article the basic elements and disadvantages of distance educative system in the conditions of the military education are consideredРассматриваются основные структурные элементы и противоречия системы дистанционного обучения, применительно к условиям военного образовани

    Evaluation of the development of professional competence in undergraduates: Methodical aspects

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    © 2016 The Author(s).Bologna process puts in a high claim for the modern European education in terms, RUSSof competency building approach. The control is conducted by the agencies which monitor learning activity level in higher education institutions. This paper presents the aspects of higher education within the conduction of competency building approach projects in Europe and Russia. We propose the technology which evaluates students’ professional competence qualimetricly. The technology represents the evaluation algorithm at all levels of student training

    Local taxonomic spectra in plants, animals, fungi and terrestrial protists show common mathematical patterns

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    Taxonomic spectra, i.e. relations between supraspecific taxa by the number of included species, remain poorly understood in aspect of the mathematical properties. We studied taxonomic spectra of plants (Magnoliophyta, Bryophyta), animals (Coleoptera, Aves), fungi (Agaricomycetes) and terrestrial protists (Myxomycetes), found in the Homilsha Forests National Nature Park (North-East of Ukraine), and concluded that they correspond to the hollow-curve distribution at the level of genera, families and orders. The spectra of most taxa, as shown by the Akaike information criterion, are closely approximated by the log-series distribution model at all taxonomic levels. This type of distribution is typical for the species abundance curves, based on collections made from small areas. At the same time, in the genera–families–orders row the similarity to the lognormal distribution increases. The central values and variability vary considerably between different taxonomic groups and ranks, however, without affecting the type of distribution. The number of orders in all taxa except Bryophyta has reached the saturation and coincides with the curve of the estimated number of orders according to the Chao1 coefficient. For families and especially genera the correspondence with estimated number of species is much lower. Our results do not confirm the assumption that hollow-curve distributions of taxonomic spectra result from the artificial fragmentation of taxa. These distributions neither depend on the insufficient knowledge about the species composition at the locality, nor reflect the size of the studied area. The presence of such distributions in both local and global biota of different groups may be explained by the common features of their evolution, especially by the existence of relict orphan groups. The fact that in Homilsha Forests the kurtosis and skewness of distributions decreases in the genera–families–orders row can therefore be explained by the relatively low percentage of the high-rank orphan taxa in the local biota. This may be a common feature of communities studied at small geographical scale, since orphan taxa often demonstrate a high level of endemism. Comparative studies of local communities from different climate zones may help to understand how universal are the patterns, described herein

    Ore-forming Сonditions of the Blagodat Gold Deposit in the Riphean Metamorphic Rocks of the Yenisey Ridge According to Geochemical and Isotopic Data

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    Neodymium and strontium isotopic composition and rare earth elements (REE) distribution pattern have been determined in whole rocks and minerals were separated from host metamorphic rocks and disseminated sulfide ores of the Blagodat gold deposit. Isotopic data are given to construct few isochrones that could be reflected an age of main stages of metamorphic and metasomatic alteration in rocks varieties during a successive accumulation of gold in structural traps. The significant temporal range in the forming of the studied rocks can be interpreted as an evidence of multi-stage tectonic destruction accompanying with trust-folding processes, shear deformations and development of local fracture zones that had place from the Late Riphean to Middle Paleozoic time. According to isotopic data basic ore-forming processes were realized in the relatively narrow interval from 690 to 750 Ma that correspond to a beginning of continental rifting on the western margin of Siberian craton. Chemistry and trace element distribution are closed for host and auriferous schists and mainly showed differences in the composition initial sedimentary units. The middle negative value εNd (from -14 to -16) and very high positive value εSr (from +570 to +725) are mostly corresponded to that of upper continental crust matter. The role of synchronic granite intrusions in the studied area can be only estimated due to a generation of thermal energy and crustal fluids

    Structural, electronic and magnetic properties of ferroelectric/dielectric heterostructures

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    The reported study was funded by Russian Scientific Foundation according to the research project No. 18-12-00260. The work is partially performed according to the Russian Government Program of Competitive Growth of Kazan Federal University

    Properties of the barium strontium titanate film on the silicon substrate

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    The reported study was supported of the Russian Foundation for Basic Research, research project No. 18-42-160005. The work is partially performed according to the Russian Government Program of Competitive Growth of Kazan Federal University. A.S. Elshin thanks the Russian Foundation for Basic Research for financial support, project No. 17-32-50047

    Differential diagnostics of skin tuberculosis: clinical case.

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    The article presents a clinical case of differential diagnosis of skin tuberculosis with other skin lesions. This article also presents the main types of skin tuberculosis.В работе представлен клинический случай дифференциальной диагностики туберкулеза кожи с другими поражениями кожи. Описаны основные виды туберкулеза кожи

    Study of omega-meson production in pp collisions at ANKE

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    The production of omega-mesons in the pp->pp omega reaction has been investigated with the COSY-ANKE spectrometer for excess energies of 60 and 92MeV by detecting the two final protons and reconstructing their missing mass. The large multipion background was subtracted using an event-by-event transformation of the proton momenta between the two energies. Differential distributions and total cross sections were obtained after careful studies of possible systematic uncertainties in the overall ANKE acceptance. The results are compared with the predictions of theoretical models. Combined with data on the phi-meson, a more refined estimate is made of the Okubo-Zweig-Iizuka rule violation in the phi/omega production ratio.Comment: 10 pages, 9 figures, version 1, submitted to EPJ-
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