7,052 research outputs found

    Introduction of vocational standards: are there alternative ways?

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    The purpose of this article is to analyze approaches to the development of vocational standards abroad. The authors consider the most alternative approaches of a number of the countries that traditionally have no vocational standards; compare advantages and shortcomings of different approaches in the description of skill standards; show advantages of the use of vocational standards or equivalent documents in different countries; disclose the reasons behind various approaches to labor standardization. The article uses the comparative study method based on the review of home experience of qualifications system development in Soviet and foreign practices. The authors have used the methods of collecting empirical information on approaches to qualifications characteristics in modern vocational standards, URSG, UJEC and in documents of a number of European states; methods of conceptual and terminological analysis, interpretation and modelling, problem method that have yielded the following results: identification of peculiarities of the method of the development of Russian vocational standards, description of arising risks oftheir application and planning the ways to overcome them. Science novelty of the work consists in consistent justification of possibilities and limitations in the application of foreign experiences in Russia. Practical importance consists in justification of advantages of the application of vocational standards in Russia and abroad.Keywords: national qualification system; vocational standards; professional education and trainin

    Nuclear magnetic octupole moment and the hyperfine structure of the 5D3/2,5/25D_{3/2,5/2} states of the Ba+^+ ion

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    The hyperfine structure of the long-lived 5D3/25D_{3/2} and 5D5/25D_{5/2} levels of Ba+^+ ion is analyzed. A procedure for extracting relatively unexplored nuclear magnetic moments Ω\Omega is presented. The relevant electronic matrix elements are computed in the framework of the ab initio relativistic many-body perturbation theory. Both the first- and the second-order (in the hyperfine interaction) corrections to the energy levels are analyzed. It is shown that a simultaneous measurement of the hyperfine structure of the entire 5DJ5D_J fine-structure manifold allows one to extract Ω\Omega without contamination from the second-order corrections. Measurements to the required accuracy should be possible with a single trapped barium ion using sensitive techniques already demonstrated in Ba+^+ experiments.Comment: Phys Rev A in pres

    2-aminoaethanesulfonic acid compounds possess protective property in reperfusion-induced heart jnjury

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    The study aim was to explore pharmacological effects of 2-aminoaethansulfonic acid compounds in reperfusion-induced heart injury. The study was performed on rats and dogs of both sexes, isolated rats’ hearts. Two compounds of 2-aminoethanesulfonic acid, magnesium-containing (LBK-527) and phenylacetamide-containing (LKhT-317) were investigate

    Search for AGN counterparts of unidentified Fermi-LAT sources with optical polarimetry: Demonstration of the technique

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    The third Fermi-LAT catalog (3FGL) presented the data of the first four years of observations from the Fermi Gamma-ray Space Telescope mission. There are 3034 sources, 1010 of which still remain unidentified. Identifying and classifying gamma-ray emitters is of high significance with regard to studying high-energy astrophysics. We demonstrate that optical polarimetry can be an advantageous and practical tool in the hunt for counterparts of the unidentified gamma-ray sources (UGSs). Using data from the RoboPol project, we validated that a significant fraction of active galactic nuclei (AGN) associated with 3FGL sources can be identified due to their high optical polarization exceeding that of the field stars. We performed an optical polarimetric survey within 3σ3\sigma uncertainties of four unidentified 3FGL sources. We discovered a previously unknown extragalactic object within the positional uncertainty of 3FGL J0221.2+2518. We obtained its spectrum and measured a redshift of z=0.0609±0.0004z=0.0609\pm0.0004. Using these measurements and archival data we demonstrate that this source is a candidate counterpart for 3FGL J0221.2+2518 and most probably is a composite object: a star-forming galaxy accompanied by AGN. We conclude that polarimetry can be a powerful asset in the search for AGN candidate counterparts for unidentified Fermi sources. Future extensive polarimetric surveys at high galactic latitudes (e.g., PASIPHAE) will allow the association of a significant fraction of currently unidentified gamma-ray sources.Comment: accepted to A&

    Sobemovirus genome appears to encode a serine protease related to cysteine proteases of picornaviruses

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    AbstractA putative serine protease was identified among non-structural proteins of southern bean mosaic virus (SBMV) by sequence comparison with cellular and viral proteases. The predicted SBMV proteased is played a significant similarity to cysteine proteases of picornaviruses, providing a possible evolutionary link between the two enzyme classes. It is suggested that SBMV follows the general expression strategy characteristic of other positive-strand RNA viruses containing 5′-terminal covalently linked proteins (VPg), i.e. generation of functional proteins by polyprotein processing

    Dynamic control of knee axial deformities

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    The authors have evaluated the clinical examination of the patients with axial malalignments in the knee by the original method and device which was named varovalgometer. The measurements were conducted by tension of the cord through the spina iliaca anterior superior and the middle of the lower pole of patella. The deviation of the center of the ankle estimated by metal ruler which was positioned perpendicular to the lower leg axis on the level of the ankle joint line. The results of comparison of our method and computer navigation in 53 patients during the TKA show no statistically significant varieties but they differ by average 5° of valgus in clinical examination in comparison with mechanical axis which was identified by computer navigation. The dynamic control of axial malalignment can be used in clinical practice for estimation of the results of treatment of pathology with axial deformities in the knee; for the control of reduction and secondary displacement of the fractures around the knee; for assessment of instability; in planning of correctional osteotomies and intraoperative control of deformity correction; for estimation of Q angle in subluxation and recurrent dislocation of patella; in planning of TKA; during the growth of child it allows to assess the progression of deformity

    THE CONCENTRATION OF POTENTIALLY HAZARDOUS ELEMENTS AND YTTRIUM IN COAL FROM THE KARATAEVSKY MINE, IRKUTSK BASIN

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    It is now known that coals throughout the world contain many valuable elements. In the Irkutsk Region, coal mining is provided by the resources of the Irkutsk coal-bearing basin. The Irkutsk basin is a large area of the Jurassic continental sedimentary deposits in the south of the Siberian craton, with the Cheremkhovo, Prisayan and Kuda formations. The upper Cheremkhovo formation is the primary coal-bearing formation of the Irkutsk basin. This paper presents the geochemical data on the Karataevsky coal mine. Trace element concentrations were obtained using X-ray fluorescence spectrometry. The average Th content (14.24 ppm) in the studied coal seam is higher than that in most of the world coals. The Co (35 ppm), F (1008 ppm), Sn (12 ppm), Th (34 ppm) concentrations in the coal shale consisting primarily of kaolinite (90 %) are higher than in ordinary coals. The coals should be used considering the concentrations of potentially hazardous elements that are high relative to the world coals. The studied coals can be interesting in terms of their slight enrichment in Y, with an average concentration of 19.7 ppm, which is 2.4 times higher than that in the world coal

    Radio jet emission from GeV-emitting narrow-line Seyfert 1 galaxies

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    We studied the radio emission from four radio-loud and gamma-ray-loud narrow-line Seyfert 1 galaxies. The goal was to investigate whether a relativistic jet is operating at the source, and quantify its characteristics. We relied on the most systematic monitoring of such system in the cm and mm radio bands which is conducted with the Effelsberg 100 m and IRAM 30 m telescopes and covers the longest time-baselines and the most radio frequencies to date. We extract variability parameters and compute variability brightness temperatures and Doppler factors. The jet powers were computed from the light curves to estimate the energy output. The dynamics of radio spectral energy distributions were examined to understand the mechanism causing the variability. All the sources display intensive variability that occurs at a pace faster than what is commonly seen in blazars. The flaring events show intensive spectral evolution indicative of shock evolution. The brightness temperatures and Doppler factors are moderate, implying a mildly relativistic jet. The computed jet powers show very energetic flows. The radio polarisation in one case clearly implies a quiescent jet underlying the recursive flaring activity. Despite the generally lower flux densities, the sources appear to show all typical characteristics seen in blazars that are powered by relativistic jets.Comment: Accepted for publication in 4 - Extragalactic astronomy of Astronomy and Astrophysic
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