Application of Hexagonal Conceptual Model for Solving Problem of Synchronization By Visual Designing of Complex Systems

In this article, solutions in the field of synchronous technology of the computer-aided design of complex systems on the example of the integral structure are discussed. The main attention is paid to the methods of conceptual and functional and logical design using the tools of visual presentation. The data transfer problem between the levels of design models have been analyzed. To synchronize design models at the system level, a hexagonal conceptual model is proposed for the visual presentation of information about the integrated structures and the VI-XML language – for the implementation of the synchronous modeling environment

Solid state electrochemical devices for hydrogen energy

The idea of nuclear-hydrogen energy draws growing interest of power engineering specialists. One of the ways to implement such a direction of development is integration of nuclear power station and high temperature electrochemical devices, namely solid oxide electrolyzers (SOE) and fuel cells (SOFC). This paper reviews the principal features of the devices and their high efficiency of energy transformation. The electrical efficiency of the SOEs can exceed 100 % at the expense of high-grade potential heat energy consumed by the electrolyzer. The efficiency of the SOFCs amounts to 70 %. The state of the art of long-term tests of single cells of SOEs and SOFC stacks are presented.https://doi.org/10.15826/elmattech.2023.2.01

Towards portable muography with small-area, gas-tight glass Resistive Plate Chambers

Imaging techniques that use atmospheric muons, collectively named under the neologism "muography", have seen a tremendous growth in recent times, mainly due to their diverse range of applications. The most well-known ones include but are not limited to: volcanology, archaeology, civil engineering, nuclear reactor monitoring, nuclear waste characterization, underground mapping, etc. These methods are based on the attenuation or deviation of muons to image large and/or dense objects where conventional techniques cannot work or their use becomes challenging. In this context, we have constructed a muography telescope based on "mini glass-RPC planes" following a design similar to the glass-RPC detectors developed by the CALICE Collaboration and used by the TOMUVOL experiment in the context of volcano radiography, but with smaller active area (16 $\times$ 16 cm$^{2}$). The compact size makes it an attractive choice with respect to other detectors previously employed for imaging on similar scales. An important innovation in this design is that the detectors are sealed. This makes the detector more portable and solves the usual safety and logistic issues for gas detectors operated underground and/or inside small rooms. This paper provides an overview on our guiding principles, the detector development and our operational experiences. Drawing on the lessons learnt from the first prototype, we also discuss our future direction for an improved second prototype, focusing primarily on a recently adopted serigraphy technique for the resistive coating of the glass plates.Comment: 8 pages, 7 figures, XV Workshop on Resistive Plate Chambers and Related Detectors (RPC2020

EI of the Phosphotransferase System of Escherichia coli: Mathematical Modeling Approach to Analysis of Its Kinetic Properties

The mathematical model of the operation of the first enzyme of the Escherichia coli phosphotransferase system, EI, is proposed. Parameters of the kinetic model describing the operation of EI under different conditions are identified on the basis of a large amount of known experimental data. The verified model is employed to predict modes of operation of EI under both in vivo physiological conditions and in vitro nonphysiological conditions. The model predicts that under in vivo physiological conditions, the rate of phosphotransfer from EI to the second protein of the phosphotransferase system HPr by the dimer is much higher than by the monomer. A hypothesis is proposed on the basis of calculations that the transfer by a monomer plays a role in the regulation of chemotaxis. At submicromolar pyruvate concentration, the model predicts nonmonotonic dependence of the phosphotransfer rate on the substrate (PEP) concentration

Non-dissipative drag of superflow in a two-component Bose gas

A microscopic theory of a non-dissipative drag in a two-component superfluid Bose gas is developed. The expression for the drag current in the system with the components of different atomic masses, densities and scattering lengths is derived. It is shown that the drag current is proportional to the square root of the gas parameter. The temperature dependence of the drag current is studied and it is shown that at temperature of order or smaller than the interaction energy the temperature reduction of the drag current is rather small. A possible way of measuring the drag factor is proposed. A toroidal system with the drag component confined in two half-ring wells separated by two Josephson barriers is considered. Under certain condition such a system can be treated as a Bose-Einstein counterpart of the Josephson charge qubit in an external magnetic field. It is shown that the measurement of the difference of number of atoms in two wells under a controlled evolution of the state of the qubit allows to determine the drag factor.Comment: 13 pages, 3 figures. This preprint is extended and substantially revised variant of related preprint cond-mat/040456

Graph-analytic engineering method of corrosion current calculation in multielectrode system

The calculation methods of corrosion current in multielectrode system have been analysed. The algorithm of graph-analytical engineering method of corrosion current calculation in multielectrode system including the principles of graphic and analytical calculation methods is presented. As an illustrative example the case with three electrodes (copper, iron, and aldrey) is considered

Studying Properties of Abnormal Human Brain Activity in Photosensitive Epilepsy Caused by Light Stimulation

© 2015, Springer Science+Business Media New York. Fractal features of neuromagnetic activity of the cerebral cortex in photosensitive epilepsy (PSE) before and after exposure to light flickering stimulus were studied. It was found that the dynamics of magnetoencephalographic signals of the PSE patient is characterized by higher values of the fractal index than in the control group. The most significant differences are revealed for the parietal, occipital, frontal, left parietal, and left temporal regions of the brain. Switching the stimulus led to a large-scale reaction of various regions of the cortex in the control group, while the patients showed a localized response

Studying Properties of Abnormal Human Brain Activity in Photosensitive Epilepsy Caused by Light Stimulation

© 2015 Springer Science+Business Media New York Fractal features of neuromagnetic activity of the cerebral cortex in photosensitive epilepsy (PSE) before and after exposure to light flickering stimulus were studied. It was found that the dynamics of magnetoencephalographic signals of the PSE patient is characterized by higher values of the fractal index than in the control group. The most significant differences are revealed for the parietal, occipital, frontal, left parietal, and left temporal regions of the brain. Switching the stimulus led to a large-scale reaction of various regions of the cortex in the control group, while the patients showed a localized response

Reforming the housing and community amenities system of a metropolis using blockchain technology

The article discusses management techniques of reforming the management system of the housing and community amenities of the metropolis, associated with the use of innovative technologies. The idea is substantiated that the “blockchain” technology can significantly increase the quality of public services: reduce data processing time and decrease the number of requests for the necessary information. The purpose of the article is to substantiate the possibility of bringing the provision of housing and community amenities to a fundamentally new level, to increase public confidence in the work of state bodies. The authors pay the main attention in the work to the analysis of the openness and transparency of new technologies, as well as preservation guarantees of personal data in the provision of public services. The authors propose possible directions for the application and development of “blockchain” technology in the public sector, as well as a mechanism for the formation of special automated “smart rules” that can be used for the public sector. The authors’ proposal is to create normative legal or administrative acts not just in a machine-readable format, but as “smart rules” is of fundamental importance. The introduction of such an order significantly optimizes the automation of management, because new legislation will not require automation – it will initially be published in the form of directly performed by means of automation of data processing, which do not require human participation

MANAGEMENT TECHNIQUES FOR IMPROVING THE QUALITY OF DECISION-MAKING BY OWNERS OF APARTMENT BUILDINGS ON THE CHOICE OF MANAGEMENT ORGANIZATION

The procedure for choosing the organization managing the apartment building is regulated in detail by legislation. However, the law, formally conforming to market principles, leaves the owners of residential premises in the house without any reasonable selection criteria. The wrong choice of a management company is fraught not only with economic losses, but also with safe living. At the same time, the ratings proposed for state accounting or statistics cannot be applied by owners to select the best candidate, since they have other goals. The limited applicability of these ratings and criteria systems has been argued in the article, and also well-grounded approaches and a new system of criteria necessary to resolve the selection problem have been proposed