231 research outputs found
Socio-humanitarian nature of professionalism of the journalist
"Professionalism" as a concept has been historically formed in socio-humanitarian paradigm. Post-industrialism has made significant changes in the social structure of the modern world, the changes have affected both economic and socio-cultural spheres of life. The number of people employed in the manufacturing sector has decreased, and the number of people employed in non-productive areas such as trade, services, information sector has increased. The requirements for professional skills, attitudes towards professionalism have also changed. The aim of the study is to expose the changes concerning the concept of professionalism in journalism, associate external social factors with the professional qualities of the individual journalist. We have used comparative-historical method of studying the legal and regulatory framework, methods of qualitative social research: participant observation, personified interviews, expert inquiry. 52 journalists have been polled from 41 leading Russian publications. The study found that awareness of professionalism among journalists in Russia was formed in terms of high humanistic views. In Soviet times, these ideas underwent a qualitative change and were heavily politicized and idealized but did not lose their humanistic principles. As a result of the economic changes occurred in Russia at the turn of the century, the notion of professionalism in journalism assumes utilitarian and practical nature and is determined more by external circumstances (rating, careerism, political commitment) than the internal culture of the individual and the humanistic principles of the journalist. Formation of professional skills of the journalist is influenced by socio-cultural, economic, technological and political factors. The image of a professional journalist is not individual any longer, depersonalized workers with a certain set of skills and abilities are replacing the individuals in the profession
Analysis of PR-text: The semantic aspect
PR-text is a complex, from the semantic point of view, formation, due to its dual nature. The PR-text is presented in two semantic guises - as the meaning, specified by social and professional traditions of oral culture, and as the sense, defined by the author of the text. One of the main properties of the text is the ability to transmit and contain information. The text is a complex formation, incorporating, at the same time existing in its structure, linguistic, logic, speech, cognitive, stylistic, expressive and other subsystems. For a deeper understanding of the semantics of the PR text, it is necessary to define the semantic field of the text, its content, how the elements of the language system and the formal properties of the PR-text interact
Spin independence of the strongly enhanced effective mass in ultra-clean SiGe/Si/SiGe two-dimensional electron system
The effective mass at the Fermi level is measured in the strongly interacting
two-dimensional (2D) electron system in ultra-clean SiGe/Si/SiGe quantum wells
in the low-temperature limit in tilted magnetic fields. At low electron
densities, the effective mass is found to be strongly enhanced and independent
of the degree of spin polarization, which indicates that the mass enhancement
is not related to the electrons' spins. The observed effect turns out to be
universal for silicon-based 2D electron systems, regardless of random
potential, and cannot be explained by existing theories
Histidine Acid Phytases of Microbial Origin
© 2018, Pleiades Publishing, Ltd. Abstract—: This review is focused on analysis of the biological diversity of phytase-producing microorganisms capable of degrading phytate to inorganic phosphate. General approaches to microbial phytase classification are discussed, with a particular emphasis on histidine acid phytases (HAPs), which catalyze specific cleaving of myo-inositol hexakisphosphate. The effect of glycosylation and various effectors on enzyme thermostability and activity of phytases are described. The data on the biosynthesis of histidine acid phytases, their substrate specificity, and on the mechanism of myo-inositol hexakisphosphate hydrolysis are considered. A conclusion is made concerning the biotechnological potential of this group of microbial enzymes
Bottom topography, length, chamber structure of timergazin canyon-like valley and problems of oil and gas exploration in basement
In this article there are specified: a sub-latitudinal valley bottom topography of South Tatar arch, valley length and a position of directive pallial-crustal first order fracture. The valley bottom chamber was considered as continental rift structure with fracture-block tectonics in plan. The possible contribution of the valley to hydrocarbon transit from deep formations is estimated. The Subkhankulovsky swell is specified as possible hydrocarbon deposit within the basement. © 2009
Challenges of beta-deformation
A brief review of problems, arising in the study of the beta-deformation,
also known as "refinement", which appears as a central difficult element in a
number of related modern subjects: beta \neq 1 is responsible for deviation
from free fermions in 2d conformal theories, from symmetric omega-backgrounds
with epsilon_2 = - epsilon_1 in instanton sums in 4d SYM theories, from
eigenvalue matrix models to beta-ensembles, from HOMFLY to super-polynomials in
Chern-Simons theory, from quantum groups to elliptic and hyperbolic algebras
etc. The main attention is paid to the context of AGT relation and its possible
generalizations.Comment: 20 page
Structural characteristics and catalytic mechanism of Bacillus β-propeller phytases
© 2016, Pleiades Publishing, Ltd.ß-Propeller phytases of Bacillus are unique highly conservative and highly specific enzymes capable of cleaving insoluble phytate compounds. In this review, we analyzed data on the properties of these enzymes, their differences from other phytases, and their unique spatial structures and substrate specificities. We considered influences of different factors on the catalytic activity and thermostability of these enzymes. There are few data on the hydrolysis mechanism of these enzymes, which makes it difficult to analyze their mechanism of action and their final products. We analyzed the available data on hydrolysis by ß-propeller phytases of calcium complexes with myo-inositol hexakisphosphate
The Methodology of a Locomotive Simulation Model Development within the Model-Oriented Approach
The use of mathematical modelling at the early stages of product design makes it possible to substantiate fundamental technical solutions, taking into account all possible (large number) requirements for the product by consumers and operation. At this (early) stage, it is important to use well-tested and convenient tools for designers to create virtual stands and digital twins (DC), confirming compliance, as well as forming the structure of systems and products as a whole. The article discusses a comprehensive methodology for the process of constructing a numerical model of a locomotive for analysing dynamics under various operating conditions. It is based on the top-level structural model (LBM), which is presented in the form of a block diagram and is used at all stages of product design. The required detailing of such a model depends on the actual tasks. The detailed models of the systems that have been developed within the framework of the work are presented. © 2021 Institute of Physics Publishing. All rights reserved
Resolvents and Seiberg-Witten representation for Gaussian beta-ensemble
The exact free energy of matrix model always obeys the Seiberg-Witten (SW)
equations on a complex curve defined by singularities of the quasiclassical
resolvent. The role of SW differential is played by the exact one-point
resolvent. We show that these properties are preserved in generalization of
matrix models to beta-ensembles. However, since the integrability and
Harer-Zagier topological recursion are still unavailable for beta-ensembles, we
need to rely upon the ordinary AMM/EO recursion to evaluate the first terms of
the genus expansion. Consideration in this paper is restricted to the Gaussian
model.Comment: 15 page
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