National identity in new media

The Internet is often regarded as a global and supranational network. Criticizing this view, the author examines the mechanisms for maintaining national identity and proves that the ritual use of mass media is steadily decreasing, while national discourse replaces it. National discourse also covers new media which start to resemble traditional mass media more and more, including their function of nation building

Property (T)(T) for noncommutative universal lattices

We establish a new spectral criterion for Kazhdan's property $(T)$ which is applicable to a large class of discrete groups defined by generators and relations. As the main application, we prove property $(T)$ for the groups $EL_n(R)$, where $n\geq 3$ and $R$ is an arbitrary finitely generated associative ring. We also strengthen some of the results on property $(T)$ for Kac-Moody groups from a paper of Dymara and Januszkiewicz (Invent. Math 150 (2002)).Comment: 47 pages; final versio

Fake News as a Parasit of Social Media

The article is devoted to the problem of fake news, which is understood as fabricated for the discrediting of some person or organization of the message, designed to spread viral in social media. Disinformation is now similar to a virus, easily clinging to the reader and undermining the reputation of both the object of the information attack and the distribution channel itself.Статья посвящена проблеме фейковых новостей, которые понимаются как сфабрикованные для дискредитации какой-то персоны или организации сообщения, рассчитанные на вирусное распространение в социальных сетях. Дезинформация становится похожа на вирус, легко цепляясь к читателю и подрывая репутацию как объекта информационной атаки, так и самого канала распространения новости

Stable monopole and dyon solutions in the Einstein-Yang-Mills theory in asymptotically anti-de Sitter Space

A continuum of new monopole and dyon solutions in the Einstein-Yang-Mills theory in asymptotically anti-de Sitter space are found. They are regular everywhere and specified with their mass, and non-Abelian electric and magnetic charges. A class of monopole solutions which have no node in non-Abelian magnetic fields are shown to be stable against spherically symmetric linear perturbations.Comment: 9 pages with 5 figures. Revised version. To appear in Phys Rev Let

Theory of transient spectroscopy of multiple quantum well structures

A theory of the transient spectroscopy of quantum well (QW) structures under a large applied bias is presented. An analytical model of the initial part of the transient current is proposed. The time constant of the transient current depends not only on the emission rate from the QWs, as is usually assumed, but also on the subsequent carrier transport across QWs. Numerical simulation was used to confirm the validity of the proposed model, and to study the transient current on a larger time scale. It is shown that the transient current is influenced by the nonuniform distribution of the electric field and related effects, which results in a step-like behavior of the current. A procedure of extraction of the QW emission time from the transient spectroscopy experiments is suggested.Comment: 5 pages, 4 figures, to be published in J. Appl. Phy

The calculation of the relaxation processes during dehydration of fish

The methods of study of relaxation processes that are applicable during fish dehydration considering the influence of the chemical composition, geometric size of the processing object and regime parameters of the dehydration processes are developed in this work. The usage of the numerical methods of calculation on the basis of solution of the second-order differential equation with boundary conditions of the third kind allow with sufficient accuracy for engineering practice modeling the different conditions of the dehydration process conducting with periodic restoration of hydraulic conductivity properties of the objects of dehydration. The proposed calculation methods applicable to dehydration processes. Which consists of a continuous initial period and the combined periods of drying fish and relaxation dehydration facility. During the relaxation is provided an exposure to a drying agent for dewatering for a certain time. During relaxation stops the supply of electric power to the heating elements. Reduces the rate of circulation of the drying agent. In the drying installation is supplied with air of lower temperature and higher relative humidity than the drying agent. In drier conditions are created that constrain external mass transfer and promotes relaxation of moisture, that is, to its redistribution in the thickness of the fish. During the relaxation of the moisture is gradually shifting from the central layers where dehydration has not yet come to the dehydrated surface layers. The appearance of moisture inside the dehydrated surface area leads to putting up and expansion of capillaries. At the next interval change product moisture re-enters the dehydration process, the high conductive properties throughout its volume