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The article considers methodological approaches to the study of the media field transformations under contemporary changes and presents the results of the annual sociological monitoring conducted in the Republic of Belarus (2003-2017). The authors claim the redistribution of influence on the audience from traditional media in favor of Internet resources and other forms of network communications. Traditional mass media and communication media undergo radical changes, the subjects of which are professional editions and journalists together with the consumers of mass media information, who reproduce and disseminate the meaningful for them content in the Internet through the networks of virtual media communications. The sociological monitoring allowed to identify the level of influence of different types of media at the certain period of social-political and social-economic development of the Republic of Belarus. At the first stage of the media field studies (2003-2005), traditional mass media held leading positions, but from 2006 the Internet has rapidly increased its impact, and in 2014 a fundamentally new segment - the social media - stood out from the Internet and became a new actor of the media field. In 2017, the Internet together with television play a decisive role in the development of the media field. At the same time the interest to sociological studies of the features and content of mass media functions has increased, and there is also an obvious request for developing new methods and improving the existing techniques for the sociological study of the contemporary media field.

Terahertz photoconductivity in heterostructures based on n-type Hg1−xCdxTe epitaxial films both in the topological phase (x < 0.16, inverted band structure, zero band gap) and the trivial state (x > 0.16, normal band structure) has been studied. We show that both the positive photoresponse in films with x < 0.16 and the negative photoconductivity in samples with x > 0.16 have no low-energy threshold. The observed non-threshold positive photoconductivity is discussed in terms of a qualitative model that takes into account a 3D potential well and 2D topological Dirac states coexisting in a smooth topological heterojunction.

The article examines the complex geopolitical situation of global instability forming at the end of the 2010s in relation to the aftermath of the Soviet Union’s collapse and the formation of a new concept for the development of civilization. The dramatic repercussions of the “Parade of Sovereignties” are uncovered, as is the frailty of new integrated entities. The article describes the unpredictable nature of the global future and the stabilizing role of national governments in global politics. It poses the questions of who determines the new world order, whose image will it take, what will the new geopolitical realities be, the basis of humanity’s moral solidarity, the “spiritual” basis for the future of civilization, and which models for the future of the world will be maintained and used as a guide for development. The author looks at the specifics of the transformation of Belorussian society and formulates several lessons on previous changes.

Topological crystalline insulators form a class of semiconductors for which surface electron states with the Dirac dispersion relation are formed on surfaces with a certain crystallographic orientation. Pb1−xSnxTe alloys belong to the topological crystalline phase when the SnTe content x exceeds 0.35, while they are in the trivial phase at x < 0.35. For the surface crystallographic orientation (111), the appearance of topologically nontrivial surface states is expected. We studied the photoelectromagnetic (PEM) effect induced by laser terahertz radiation in Pb1−xSnxTe films in the composition range x = (0.11–0.44), with the (111) surface crystallographic orientation. It was found that in the trivial phase, the amplitude of the PEM effect is determined by the power of the incident radiation, while in the topological phase, the amplitude is proportional to the flux of laser radiation quanta. A possible mechanism responsible for the effect observed presumes damping of the thermalization rate of photoexcited electrons in the topological phase and, consequently, prevailing of electron diffusion, compared with energy relaxation.

We demonstrate that measurements of the photo-electromagnetic effect using terahertz laser radiation provide an argument for the existence of highly conductive surface electron states with a spin texture in Dirac semimetals (Cd1−xZnx)3As2. We performed a study on a range of (Cd1−xZnx)3As2 mixed crystals undergoing a transition from the Dirac semimetal phase with an inverse electron energy spectrum to trivial a semiconductor with a direct spectrum in the crystal bulk by varying the composition x. We show that for the Dirac semimetal phase, the photo-electromagnetic effect amplitude is defined by the number of incident radiation quanta, whereas for the trivial semiconductor phase, it depends on the laser pulse power, irrespective of wavelength. We assume that such behavior is attributed to a strong damping of the interelectron interaction in the Dirac semimetal phase compared to the trivial semiconductor, which may be due to the formation of surface electron states with a spin texture in Dirac semimetals.

Specialists training at national research universities requires creation of selfG dependently established educational standards, which differ essentially from the Federal Standards in complexity, structure, content, conditions of implementation, as well as applyingof special educational technologies. Education standards for each university must have their own peculiarities. The authors present the concept of development and the experience in design of own education standards of Perm National Research Polytechnic University. These education standards provide formation of innovation competence of technical specialists.

This article is about approaches and realization results of the self-setting educational standard with innovation orientation 210700 «Infocommunication technologies and networks» («master» degree) project designing. Structure of self-setting educational standard, requirements to the results and the conditions for realization of the basic professional educational programs with innovation oriented training are described. Self-setting educational standards ensure diversification of master programs with innovation orientation and systematic organization of learning process adjusted for regional business and industry.

The quality evaluation problem in training of students at competence-based approach is considered in the article. The technique of creation of a negentropic assessment of level of the competences formation of graduates students is offered. The article deals with the special learning curves, which provide the opportunity to be more precise in defi ning the dependence of the level of the students' competence formation of the on their scoring.

A new class of game models, called dynamic matrix games (DMG) was introduced in [2] as a generalization of the classical matrix games considering the time factor. Such a generalization seems natural both from the theoretical point of view, the dynamic zero-sum games once being constructed by adding dynamics in the infinite zero-sum games, and from the practical point of view – as the expansion of application field of the matrix games theory. The model of the DMG was constructed in [2], the basic concepts were defined, the class of admissible pure strategies was introduced and the using of minimax principle was substantiated.The concept of mixed combinated strategies is introduced in this paper; the questions of the necessary and sufficient optimality signs, the existence of optimal strategies and their dynamic stability are investigated in this class of strategies.

The research area of the scientific school «Discrete mathematics and mathematical cybernetics» at Kemerovo State University is a wide class of optimization and management problems from different fields of human activity studied by means of mathematical modeling.Since the size of the paper is restricted, it presents only the results of those school’s activity which concern construction and research of mathematical models for so-called conflict controlled processes. In this connection, the main emphasis is put on the results obtained by the members of the school in the last 10–15 years.

The value system is the pivotal constituent of both individual and social conscience. The axis of the publication is the endeavor to establish the extent to which the events associated with the formation of the independent sovereign Belarusian state have affected the core value system of the population.