OTC derivatives market structure and the credit profi les of wholesale investment banks.

The OTC market is at a critical crossroads from a number of angles – proposed regulatory changes, changing end-user expectations, competitive pressures from the listed market, and the effect of all these on the banks’ economics from the business. The possible paths forward may include central clearing, exchange trading, stricter capital, margin and disclosure requirements, for all or parts of the USD 600T market. Moreover, as part of this process, we are seeing the creation of new, or growth of existing, systemically-important institutions – central counterparties. Each of these paths, and the way in which they will interact, have different implications for systemic and individual fi rm risks.

On the Problem of Shale Gas Mining in Ukraine

New sources of power resources are one of the most important and central tasks for the human. In these latter days all energy-dependent countries develop alternative technologies to produce renewable fuel: nuclear power, wind power, solar power, innovative approaches on the basis of genetically modified organisms etc

Locality of topological dynamics in Chern insulators

A system having macroscopic patches in different topological phases have no well-defined global topological invariant. To treat such a case, the quantities labeling different areas of the sample according to their topological state are used, dubbed local topological markers. Here we study their dynamics. We concentrate on two quantities, namely local Chern marker and on-site charge induced by an applied magnetic field. We demonstrate that the time-dependent local Chern marker is much more non-local object than equilibrium one. Surprisingly, in large samples driven out of equilibrium, it leads to a simple description of the local Chern marker's dynamics by a local continuity equation. Also, we argue that the connection between the local Chern marker and magnetic-field induced charge known in static holds out of equilibrium in some experimentally relevant systems as well. This gives a clear physical description of the marker's evolution and provides a simple recipe for experimental estimation of the topological marker's value.Comment: 21 pages, 14 figures. The manuscript continues our earlier preprint arXiv:2112.1357

Optical vortices routing in coupled elliptical spun fibers

International audienceWe have studied the tunneling of a circularly polarized optical vortex (OV) in parallel strongly spun elliptical fibers. In this case it is possible to route the OV in a pure state from one of the fibers to another. We have determined the power efficiency of this process and have shown that such a directional coupler can serve for inversion of the topological charge of the incoming vortex

Antimicrobial Resistance: A Risk Factor for the Biosafety System

Scientific relevance. In recent years, antimicrobial resistance in pathogenic microorganisms has become a global problem that threatens the health of humans and animals and poses a risk to the biosafety of Russia.Aim. The study aimed to analyse the prevalence of antimicrobial resistance, consider the risks and medical consequences of this biological phenomenon, and suggest ways to optimise the use of existing antimicrobial agents and search for new ones.Discussion. The emergence of antibiotic resistance in bacteria is a natural biological process; the selection of resistant microorganisms occurs constantly with the use of the entire spectrum of antimicrobial agents in healthcare, agriculture, and other fields. The World Health Organisation (WHO) monitors these processes using the Global Antimicrobial Resistance Surveillance System (GLASS). Russia has adopted the Strategy to prevent the spread of antimicrobial resistance in the Russian Federation to 2030. The country has established a regulatory framework that supports the operation of the national antimicrobial resistance prevention system. The strategy to prevent the spread of antimicrobial resistance is being implemented through making organisational arrangements and developing novel medicines with mechanisms of action based on an understanding of the molecular mechanisms of infection and resistance. This review considers the main approaches to designing exploratory studies and evaluating the antimicrobial activity of the innovative molecules obtained. The rapid development of synthetic biology increases the likelihood of creating synthetic biological pathogens with high virulence and resistance to antimicrobial agents, which might pose risks of artificial epidemics.Conclusions. The antimicrobial resistance prevention system in Russia should be considered a strategically essential medical technology ensuring the biosafety of the country and the people