bluuebunny/crossref_metadata_2025_split huggingface dataset:
External environment modelling in the control system of the regional socio-economic system
Authors: Averchenkova E E , Averchenkov A V , Sheptunov S A 
Published: November 2020

Abstract
The concept and methods of describing the external environment of a regional socioeconomic system from the perspective of control theory are considered. The position and relations of the external environment with other elements of the control system of the regional socio-economic system are also determined. It is shown that the external environment is set by factors that determine the linguistic composition of external influence on the object of management; the main disturbances that determine the dynamic nature of the influence; interferences. A structural-functional and mathematical model of the external environment of a regional socio-economic system is proposed which is characterized by the author’s classification of environmental factors, formalization of its main components and information flows. It is also shown that for describing disturbances of the external environment and their interferences fuzzy logic is applicable; the description of fuzzy dynamic characteristics of the external environment is provided. The general model of using measuring devices for determining the influence of the external environment on the object of control– the regional socio-economic system - is presented.
Voice communication system according to the principle of mobile radio
Authors: Kyarimova Sh D , Tynchenko V S , Khramkov V V , Markevich E A , Ponomareva K A , Leonteva A A 
Published: November 2020

Abstract
This article discusses the problem of instant remote communication with people at a remote distance. The main task was the creation of an information system that provides confidential instant radio communication of all employees and partners of the company without additional devices. Use schemes and interface circuits were used. To justify the feasibility of developing a system, a comparative analysis of analogues was carried out and the distinctive advantages of the proposed method were highlighted. The article described the system requirements and the use of software for its implementation. In addition, the article discusses the principle of emergency SOS channel, with which you can call for help if you are in trouble. GPS capabilities and the principle of tracking the location of users are considered.
Algorithm for obtaining palindromes of the binary number system
Authors: Lyubimov V V , Melikdzhanyan R V 
Published: November 2020

Abstract
The aim of this paper is to describe a new method for searching all binary palindromes that have a given number of the binary digits. The main result is presented in the form of an algorithm. The obtained algorithm is based on the use of the regularity revealed in the course of the study, based on the application of basic arithmetic operations with palindromes that have a various number of the binary digits. The paper also provides examples of using this algorithm to obtain binary palindromes with different number of the binary digits. The algorithm formulated here can be applied to analyse computer data written in the form of a binary code.
Downlink and uplink MIMO-SCMA System
Authors: Kanatbekuli I , Pokamestov D , Kryukov Y , Rogozhnikov E 
Published: November 2020

Abstract
Sparse code multiple access is a promising multiple access technology capable of increasing the spectral efficiency of communication systems. Another technology that can improve the spectral or power efficiency is multiple input multiple output. Combining both technologies offers an advantage over classic approaches. This paper presents downlink and uplink multiple input multiple output sparse code multiple access with spatial diversity to improve performance of classic systems. It considers full rate full diversity of space-time block codes. We propose maximum likelihood multiple input multiple output detection scheme without using message passing algorithm for scenario with 2 and 4 transmitting and one receiving antenna. We also propose maximum ratio combining message passing algorithm detector for uplink model with multiple receiving antenna. Numerical results demonstrate better bit error rate performance compared to classic approaches.
Development of distributed cloud video conferencing service
Authors: Perepelkin D , Saprykin A , Ivanchikova M , Kosorukov S 
Published: November 2020

Abstract
Currently, many companies are actively switching to various types of cloud services for operational interaction of employees. Among cloud services video conferencing services are becoming increasingly popular. Cloud video conferencing services available in the public use have several drawbacks: charging, limiting the time to use the free version, the lack of flexibility in managing groups, the difficulty of recording and storing video data, and many other factors. The purpose of this work is to develop a distributed cloud video conferencing service in the higher education system. The paper describes in detail the architecture and operational scheme of the developed cloud service, presents the structure of the main directories and class diagram for organizing video streaming. For flexible management of video data flows, the network infrastructure of the cloud video service is based on the principles of software defined networks technology. The prototype of the cloud video conferencing service proposed in the work has a wide potential for use in various areas of activity.
Brain temperature measurement using MR tomography images
Authors: Bogatov N , Voloshin M , Grigoryan L , Sinitsyn A , Shapovalov S 
Published: November 2020

Abstract
Volumetric MRI thermometry is undergoing active development. The measurement bases on the resonance response of protons insidemolecules (i.e., water, fat, methylene, lipids) of the examined body. The difference between resonance frequencies gives information about the temperature of the tissue. Various MR thermal image construction methods exist because temperature influences the state of a living object in numerous ways. As a result of this, contrast characteristics of MR images of tissue depend on the value of the magnetic field induction, tissue characteristics itself, and temperature. This paper deals with brain temperature measurement based on digital analysis of T
2-weighted MR images. MR images of homogenous and inhomogeneous phantoms at different temperatures were analyzed. The relationship between image brightness, temperature, and phantom composition was determined. The temperature of the cerebrospinal fluid was calculated.
Application of the autofocusing algorithm for the synthesis of X and L band radar images
Authors: Leukhin A N , Voronin A A , Merzlyakov A S , Parsaev N V 
Published: November 2020

Abstract
An approach to the formation of radar images of various frequency ranges is presented. The process of forming a radar image from a radio hologram in the case with a range migration is described. An approach to autofocusing a radar image by minimizing the entropy of a radar image is considered. The results of the operation of the described algorithms on real radio holograms are discussed.
Research of multiclass fuzzy classification of traffic for attacks identification in the networks
Authors: Parfenov D , Zabrodina L , Zhigalov A , Bolodurina I 
Published: November 2020

Abstract
Currently, data mining methods such as neural networks, decision trees, genetic algorithms, restricted search algorithms, evolutionary programming, reasoning systems based on similar cases, rule induction, analysis with selective action, logical regression, algorithms for determining associations and sequences, data visualization, combined methods are actively used in various specialized areas. The introduction of analytical methods of data mining is primarily aimed at adapting existing solutions to solve new problems related to the informatization of business processes. One of the actively developing areas that use data mining and artificial intelligence methods is network security. To identify and detect anomalies in networks, it is most effective to create profiles of data flow behavior depending on current conditions. In this work, we developed a method that allows us to identify Exploits, Fuzzers, and Generic attacks based on multiclass fuzzy classification. In the experimental part of the study, it was found that the proposed solution is comparable in accuracy to the Naïve Bayes, SVM, and KNN methods, but it has higher performance and less resource consumption for large data flows. This is quite effective for networks with many devices.
Selecting the main modes of the diffusion welding process of polymeric materials
Authors: Lavrishchev A V , Tynchenko V S , Murygin A V , Kurashkin S O , Seregin Yu N , Petrenko V E 
Published: November 2020

AbstractThe article describes the development of the software system for selecting the main modes of the diffusion welding technological process, with the implementation of the antifriction coatings based on fluoroplastics. The description of the algorithms for determining the main technological regimes from the entered necessary values of the tensile strength and wear rate, working conditions, operating temperature range, and the required composition of the material is given. The choice of the main parameters values of the technological process is made according to the maximum value of the tensile strength and the calculated value of the wear rate. According to the developed algorithm, the current values of the main parameters of the technological process are calculated. In case of insufficient strength of the joint or exceeding the value of the wear rate, the technological parameters are adjusted within the established limits or the coating material is replaced. For the decision support system in the design of technological processes, information bases were developed on the existing modes of polymeric materials diffusion welding to substrates of various types, and a database of tribotechnical information. The information database is implemented in a three-purpose software shell: 1) for entering and searching information in the database by fields, 2) for the work of an expert technologist, for linking information fields on topics, technologies, materials, 3) for work in the information mode, and in the mode of issuing an information array for process control. The constructed models and databases made it possible to create an algorithm for automating the diffusion welding process with the definition of the main modes. An algorithm for automating the selection of the diffusion welding main modes has also been developed. For the implementation of the “query generation” unit of the enlarged search algorithm, a production model of knowledge representation was used. As a result of the algorithm, an array of information is transmitted to the following modules of the algorithm. Databases were filled and logical connections of knowledge representation were established.
Technological support for the accuracy of the assembly of mechanisms
Authors: Apazhev A K , Shekikhachev Y A , Batyrov V I 
Published: November 2020

Abstract
The technological process of ensuring the accuracy of assembly of mechanisms is formally a sequential summation of primary production errors and an analysis of the obtained generalized values in order to develop and implement specific technological methods aimed at meeting the technological requirements for the accuracy of the relative position of parts. When ensuring the accuracy of the crank mechanisms for the misalignments of the axes of the piston and cylinder, assembled from specific, randomly received component parts, production personnel deal with strictly defined crankshafts, connecting rods, pistons, cylinder blocks, and, consequently, with one or another manufacturing errors. Ensuring the accuracy of the assembly of these parts in a mathematical sense with such a sequence will be nothing more than an algebraic summation of the primary errors and the compilation of their numerical values with the maximum permissible values. A different situation arises in the implementation of assembly technological processes with the automatic achievement of precision parameters by varying individual parts from their total number, which are at the disposal of designers and entered into computers as initial information. Since in this case one has to deal with fairly representative aggregates, the final result of combining parts into nodes will be satisfied with a greater or lesser probability, especially when the sum of the maximum deviations of the constituent links (parts) is not equal and not less than the maximum permissible total values. Obviously, the probability of release from the assembly site of high-quality products with automatic support and the accuracy will be determined both by the modules of individual deviations and by the distribution laws of actual deviations within the tolerance field.
Random Ag mesh transparent heater obtained with a cracked template technique
Authors: Voronin A S , Fadeev Y V , Dobrosmyslov S S , Simunin M M , Khartov S V 
Published: November 2020

Abstract
The results of a study of thin-film transparent heater based on silver micromesh coatings obtained using a self-organized template are presented. Ag mesh with sheet resistance of 1.6 Ω/sq and integral transparency in the visible range of ∼84 % was obtained. The influence of the filling factor (FF) and the thickness of the Ag mesh on the uniformity of heating of a transparent heater and the response time was studied by the method of thermal imaging analysis. We have shown a stable, reproducible operation of the crack templated Ag mesh transparent heater on glass and PET in static heating and cycling mode.
CCP maneuverability increasing algorithm realized on DCS with the metal allowable thermo-stressed state provision
Authors: Efimova A R , Vasilenko S A , Bychkova V V 
Published: November 2020

Abstract
Power generating companies’ main task today is to obtain the highest possible profit. To accomplish this task, it is necessary to have maneuverable equipment that able to reach the maximum power value in minimal time and maintain metal acceptable working conditions. Metal high thermo-stressed state can lead to premature ageing and emergency situations that require investment in overhaul or replacement of units. The authors describe the method of increasing maneuverability of combined-cycle power plant. The main considered input parameter is thermo-stressed state of ‘critical’ elements of waste heat recovery boiler and steam turbine. Based on calculated thermo-stressed values, the algorithm informs the operator of the most optimal steam turbine loading speed. The algorithm does not require any outside software and is performed in the distributed control system installed at the power plant. Also, the authors present the power plant start-up trends with thermo-stressed state calculated values to show the stress reserve, which should be reduced, thus making the start-up faster and increasing the economic performance of the power unit.
Applying the least square method to calculate the non-simultaneous errors of ship’s position determined by global positioning system (GPS)
Authors: Duong Nguyen Thai 
Published: November 2020

Abstract
Global Positioning System – GPS can determine accurately a specified position on the earth surface, in the sky and in the space. Ship’s position is determined on the true horizontal plane which is considered approximately as sea surface. Satellite equation is created basing on the pseudo distances to satellite in the system. Set of satellite equations which is corresponding to a specified set of satellites is able to determine ship’s position. Similar as taking measurements to celestial and terrestial objects, measuring distance to satellites is unable to carried out at the same time. Therefore, non-simultaneous errors that depends on ship’s speed and duration of observation are created by ship’s motion in the mentioned methods. In the traditional methods of determining ship’s position, navigation officers often use some methods to minimize the non-simulataneous errors in determining ship’s position and to evaluate effects of other errors. However, in the method of determining ship’s position by GPS, the error minimizing methods which are applied in the traditional methods are not suitable to be used because the direct distance to satellite is not measured and the line of position is not drawn on nautical chart. In this article, the author introduces the method to determine and to elimate non-simultaneous errors by applying the least square method.
Energy modes of a three-section inductor for heating aluminum
Authors: Kinev E S , Tyapin A A , Litovchenko A V , Efimov S N , Bezhitskiy S S 
Published: November 2020

Abstract
The article proposes a method for single-phase power supply of a three-section induction heater for aluminum ingots before extrusion. The solution allows you to flexibly control the heating mode of each section. The peculiarity of the synthesized mode is to increase the uniformity of heating the methodical load at the joints of the sections when replacing the three-phase winding circuit with a single-phase one. Changing the circuitry reduces the phase shifts of currents in adjacent sections. Uneven power distribution between the coils is proposed to be realized by local resonances in the windings. The resulting power factor of the inductor, close to unity, is provided by a common capacitor bank. The set of established modes of an induction heater was investigated using a simulation system built on the basis of a hybrid analysis. The numerical experiment was carried out in a specialized software environment based on a macromodel created using controlled sources. The achieved positive result from the modification of the device is evaluated by comparing the vector diagrams of the operating parameters for the initial and corrected states.
Assessment of risks and opportunities of metrological support of the laboratory
Authors: Sorochkina O Y , Romanova L A , Fedchenko A S 
Published: November 2020

Abstract
The article provides identification, analysis and evaluation of risks of metrological support of the laboratory. The authors used the SWIFT method to determine such characteristics as the causes, consequences of the occurrence of risk situations, as well as recommendation for risk management. Five risks were identified as a result of questioning the laboratory experts. The authors used FMEA analysis to determine the significance of each risk. For this, the authors additionally compiled scales of probabilities and severity of the consequences of risk events for the laboratory. The results of the assessment were formalized in the Risk Register and the Risk Management Action Plan. The consequences / probabilities matrix compiled from laboratory statistics was used as the evaluation criteria. As a result of the risk treatment taken, the level of significance of some risks decreased.
Mathematical model of heat transfer in the reactor of a biogas plant
Authors: Fiapshev A G , Khamokov M M , Kilchukova O Kh 
Published: November 2020

Abstract
The use of technical means for the production of biomethane, as a source of alternative energy, is mainly characterized by design and technological parameters, as well as operating modes of biogas plants. This study was carried out in order to obtain data on the main parameters of a biogas plant and the effect of a heat exchanger-mixer on performance indicators. The convenience of performing mathematical modeling is that it is expensive to carry out experiments on real objects, just as conducting experiments on a real installation is associated with high material costs, as well as high time costs, due to the high inertia of heat exchange processes, and the significant overall dimensions of the biogas plant. The results of mathematical modeling of thermal processes occurring in a biogas plant are presented. The data on the influence of the main parameters of the biogas plant and the heat exchanger-mixer on the quality indicators of its operation were obtained. It is shown that the theoretical temperature homogeneity of the mixed medium is achieved by combining the heat exchanger and the mixing device into one unit, the design and technological parameters characterizing the intensity of the forced movement of the fermented mass, with a change in thermal conductivity.
Micromycetes in ampelocenosis soil under different keeping system
Authors: Lukyanov A A 
Published: November 2020

Abstract
As a result of 2019 research it was found that the largest number of micromycetes colony-forming units in the soil was observed in the variant with sod formation. The number of CFU in 1 gram of absolutely dry soil in the variant with sod formation in May exceeded the variant with black fallow fivefold and in August twofold. Species diversity was represented by 11 species belonging to 8 genera: Mucor, Trichoderma, Penicillium, Aspergillus, Fusarium, Alternaria, Cladosporium, Vertecillium. In the complex of isolated micromycetes in the variant with sod formation during spring period the p. Trichoderma species predominated. Its occurrence frequency was 80%. On the black fallow in this period the dominant position was occupied by r. Penicillium species (30.4%). During summer period in sod formation variant the genera species Fusarium, Alternaria, Cladosporium, Vertecillium were isolated with a higher occurrence frequency, while the dominant position was occupied by p. Penicillium species (27.4%). In the variant with black fallow soil keeping system p. Penicillium and Aspergillus species predominated.
Montaigne’s life: a sketch
Authors: Hamlin William M. 
Published: November 2020

Abstract
“Montaigne’s life—a sketch” covers Montaigne’s culturally rich childhood and his profound friendship with the poet Étienne de La Boétie in early adulthood, which was curtailed by La Boétie’s early death. Montaigne took an active part in political life. His early “retirement” to the country, where he wrote the Essays, was not final. Having gained a reputation as a mediator between warring Catholic and Protestant factions, he retired again at fifty-two. Montaigne’s hopes that his writings might lead to another deep friendship were partly realized in his mentorship of Marie de Gournay, one of his first editors, who spent many years promoting his work after his death at fifty-nine.
Learning for living
Authors: Hamlin William M. 
Published: November 2020

Abstract
“Learning for living” explores Montaigne’s thoughts on education. While he was a voracious reader who believed in absolute truths, for Montaigne the greatest victories were found in conversation, debate, and changing one’s mind. Montaigne arrived at the idea of a forme maistresse, one translation of which is “ruling pattern” or “essential pattern”—a core of selfhood that is not immune to change, but secure enough to encourage some long-term traits while discouraging others. Montaigne would not have argued that this essential pattern rendered education useless, but he saw the limits of pedagogy while championing its virtues.
Free and sociable solitude
Authors: Hamlin William M. 
Published: November 2020

Abstract
How does Montaigne’s early essay “On Solitude” fit with his sociable nature and public profile? “Free and sociable solitude” describes the qualities of Montaigne’s ideal solitude. He argued that some withdrawal is a service that not only restores us to ourselves but improves us for our return to our colleagues and loved ones. Returning to the theme of an essential or ruling pattern, Montaigne proposed that being fully ourselves was a duty and that improving our self-knowledge and self-reliance could be an effective defense against loss or even death, as well as a welcome relief from the bureaucracy of political life and the war raging outside.