bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on key technologies of bearing preload of spindle based on piezoelectric actuators
Authors: Zhang Junping , Zuo Chuang , Ye Rongjun
Published: October 2019

This study analysed the influence of bearing preload on the stiffness of spindle bearings. MATLAB/Simulink is used to calculate the vibration of simplified spindle system. The vibration of the simplified spindle system decreases with the increase of bearing preload. A kind of force output characteristics of piezoelectric actuators test device was designed. Experimental analysis of the maximum force output characteristic, hysteresis characteristic, creep characteristic and stability characteristic of PSt 150/4/7 VS9‐type piezoelectric actuators under different initial loads, voltage frequencies, cycles working and voltage travel. The evaluating indexes are the maximum output force, average hysteresis, maximum deviation, drift amount and cycle delay. In conclusion that the piezoelectric actuator has better repeatability and stability under the initial load is around 150 N and low‐voltage frequency. It is not suitable for multiple cycles working. The increment of output force is proportional to starting voltage at same voltage travel. MATLAB/Simulink is used to calculate the feasibility of variable bearing preload strategy based on a piezoelectric actuator. It provided scientific references for the research of high performance and intelligent spindle.
On‐board multi‐lane parallel MLVDS bus design for in‐orbit embedded satellite test device
Authors: Chen Zhiyuan , Cui Xiuhai , Ma Ning , Liu Datong
Published: October 2019

The traditional satellite prognostic and health management (PHM) mostly relies on the satellite downlink telemetry data. Nowadays, the application of satellite becomes more diversification and its function becomes much more complicated. As a result, the telemetry data cannot meet the data requirements for satellite PHM due to the limited resources of telemetry channels and low sampling rate. Therefore, satellite in‐orbit embedded testing was proposed. In order to satisfy the requirement of large volumes of data acquisition and transmission in satellite in‐orbit embedded testing, this article proposes a new data agreement by the modification of the Modbus protocol to unified control 5‐lane MLVDS bus. Therefore, a multi‐channel parallel MLVDS data transmission bus is proposed to realise the data transmission from the data collection end to the information processing end of the PHM system on‐board. The bus protocol designed here is implemented by using the Programmable Logic Part on the Xilinx XC7Z045.
Fast ranging method in cooperative positioning
Authors: Xu Zhixin , Dai Erhan , Ge Jiacheng
Published: October 2019

Target node positioning is achieved for a wireless sensor network (WSN) with multiple sensor nodes. This issue has been a hot topic for many scholars. The use of anchor node cooperation, i.e. the use of the arrival time and arrival time difference between the primary and secondary nodes to determine the target node position is the most recent proposed method. Due to the problem of clock skew, this basic cooperative method has a large error in the actual indoor environment. Therefore, a rapid cooperative positioning method that can reduce the clock drift to the actual indoor environment is proposed here.
New method of bearing fault diagnosis based on mmemd and DE_ELM
Authors: Hu Yongtao , Dong Mingru , Wang Guozhu , Fan Zheng , Zhang Shuqing
Published: October 2019

A new method of bearing fault diagnosis based on multi‐masking empirical mode decomposition (MMEMD) and extreme machine learning optimised by differential evolution algorithm (DE_ELM) is proposed in this study. MMEMD is an improvement of empirical mode decomposition (EMD). By adding masking signals to the signals to be decomposed in different levels, MMEMD can restrain low‐frequency components from mixing in high‐frequency components effectively in the sifting process and then suppress the mode mixing. Differential evolution algorithm is applied to determine the parameters of ELM for improving the classification accuracy. The four parameters are determined at one time by uniformly coded as the individuals of the differential evolution algorithm. To achieve the bearing fault diagnosis, the fault signals are first decomposed into different intrinsic mode functions (IMFs) and the sample entropy of each IMF was calculated as the fault feature. Then the fault feature was divided into training set and testing set. Input the training set to the DE_ELM to obtain the fault classification model. Finally, the testing set was put into the model for fault diagnosis. The experiment and wind turbine bearing fault diagnosis results show that the method could identify the different bearing faults with high reliability and accuracy.
Écologie, systèmes de culture et utilisations alimentaires des ignames en Afrique tropicale : synthèse bibliographique
Authors: Adifon Fiacre Hermann , Yabi Ibouraïma , Vissoh Pierre , Balogoun Ibouraïman , Dossou Joseph , Saïdou Aliou
Published: October 2019

Cette revue de littérature couvre la botanique, la domestication, l’écologie, les systèmes de culture, la transformation ainsi que les contraintes et perspectives pour une production durable des ignames en Afrique tropicale. L’igname est un taxon d’espèces essentiellement tropicales qui nécessitent des températures élevées. Ainsi, la germination est optimale entre 25 et 30 °C, alors que des températures inférieures à 15 °C ou supérieures à 35 °C la retardent. La culture de l’igname se pratique avec succès dans des zones où la pluviométrie varie entre 1000 et 1800 mm ; toutefois, il est possible de cultiver l’igname avec une pluviométrie de 600 mm mais le rendement reste faible. L’igname, pour la croissance végétative et une bonne tubérisation, préfère des sols limono-sableux ou sablo limoneux, ayant une conductivité hydraulique de 15 cm/h, une densité apparente comprise entre 1,1 et 1,6 g.cm−3 et surtout légers, profonds (> 0,6 m), bien drainés, riches en matière organique, en azote, en potasse, en magnésium et en calcium ; un pH compris entre 5 et 7 est aussi propice à une bonne culture d’igname. Au-delà des paramètres édaphiques et des facteurs climatiques, les pratiques culturales, notamment le type de cultivar, la densité de plantation, la date de plantation, les adventices, les maladies et ravageurs, sans occulter l’histoire des parcelles et les pratiques paysannes de gestion du sol, ont un effet sur la productivité des ignames. Les facteurs déterminant le choix des variétés d’igname cultivées par les producteurs sont principalement : la qualité culinaire des tubercules, la productivité, la valeur commerciale, la facilité de multiplication, la qualité des cossettes, la précocité de tubérisation, la conservation, la facilité de culture, le rôle dans l’alimentation et l’importance pour les cérémonies rituelles.
Centrifugal compressor impeller loading factor analysis
Authors: Galerkin Y. , Drozdov A. , Rekstin A.
Published: October 2019

The loading factor performance modelling is an important part of centrifugal compressor performance calculation. The presented information on model stages’ test data confirms the fact that the loading factor versus flow coefficient at an impeller exit is a linear function independent of Mach number (subsonic flow). The test data and the design characteristics of the series of 10 model stages are compared with the calculation of an inviscid flow and with calculations done using the NUMECA software. Math models offered by the authors, and inviscid calculations solve the problem of a primary design. The CFD-calculation for final solution is non-satisfactory. If the loading factor is calculated by total temperature difference and flow coefficient is calculated by a continuity equation, the performance is not quite linear and lies much higher. For the considered stages CFD-calculation inaccuracy is + (0,06 … 0,12). CFD-calculated flow coefficient is inside 0,96 … 0,98 of the measured and of the calculated by the Math model.
The simulation of gas-dynamic characteristics of centrifugal compressors in turbo-expander units
Authors: Rekstin A. , Semenovskiy V. , Soldatova K. , Galerkin Y. , Sokolov K.
Published: October 2019

Prof. Y. Galerkin and his team have developed and completed designs of 19 single-stage centrifugal compressors for turbo-expander packaged units applying Universal Modeling Method for the company “Turbokholod JSC” since 2005. The most powerful compressor is 6500 kW. The highest delivery pressure is 12 MPa. One hundred fifteen turbo-expander packaged units with total capacity 400 000 kW were manufactured, installed and were in operation in December 2018. The gas-dynamic characteristics of compressors comply with technical specification when operated within given range of initial temperatures and initial and final pressures up to 16 combinations for some compressors. The dimensionless characteristics of the compressor stages vary within the range of design parameters: flow rate coefficient 0.0278-0.0697, loading factor 0.43-0.71. The simulation of gas-dynamic characteristics of one of the designed compressors by the newest version of mathematical model is presented as an example, demonstrating the simulation features and effectiveness.
Heat transfer intensity of pulsating gas flows in the exhaust system elements of a piston engine
Authors: Plotnikov L. V. , Brodov Y. M. , Misnik M. O.
Published: October 2019

Internal combustion engines are the most common sources of energy among heat engines. Therefore, the improvement of their design and workflow is an urgent task in the development of world energy. Thermal-mechanical perfection of the exhaust system has a significant impact on the technical and economic performance of piston engines. The article presents the results of experimental studies of gas-dynamics and heat exchange of pulsating gas flows in the exhaust system of a piston engine. Studies were carried out on a full-scale model of a single-cylinder engine. The article describes the instrument-measuring base and methods of experiments. The heat transfer intensity was estimated in different elements of the exhaust system: the exhaust pipe, the channel in the cylinder head, the valve assembly. Heat transfer studies were carried out taking into account the gas-dynamic nonstationarity characteristic of gas exchange processes in engines. The article presents data on the influence of gas-dynamic and regime factors on the heat transfer intensity. It is shown that the restructuring of the gas flow structure in the exhaust system occurs depending on the engine crankshaft speed, this has a significant impact on the local heat transfer coefficient. It has been established that the heat transfer intensity in the valve assembly is 2-3 times lower than in other elements of the exhaust system.
Operational experience of a Solar Power Plant with a Dual-Axis Solar Tracking System in the conditions of the Southern Urals
Authors: Mitrofanov S. V. , Baykasenov D. K. , Nemaltsev A. U.
Published: October 2019

The paper substantiates the need for the introduction of solar tracking systems for photovoltaic plants and presents a brief review of the scientific and technical literature on the development of solar trackers. Principal scheme of a heliostation with a dual-axis solar tracker of Orenburg State University has been designed. A comparative analysis of the generated electricity by a statically located solar module and a solar module with the dual-axis solar tracker is represented. Data for analysis have been obtained in Orenburg (Russia) using the developed automated system for remote diagnostics and monitoring of photovoltaic system parameters and a wireless weather station HP2000. The use of a dual-axis heliotracker for the solar plant in the conditions of the Southern Urals has allowed to increase the generation of electricity by 34.7% compared to a statically located PV panel.
Solar hybrid air conditioning system to use in Iraq to save energy
Authors: Vankov Y. V. , Al–Okbi A. K. , Hasanen M. H.
Published: October 2019

The energy saving issues are becoming necessary worldwide, as excessive consumption of energy leads to the consumption of a larger amount of fuel, increases environmental pollution and negatively affects the ozone layer. In Iraq, in particular, the demand for central air conditioning systems and home air conditioners with high electrical capacity has become increasingly clear in the recent years. Air conditioning systems within residential and public buildings, as well as government facilities became a necessity for good internal comfort, which was driven by desertification, high temperature, air pollution and increased population, resulting in increased consumption of electric power and pressing of power plants. Aiming at usage of renewable energy sources, the proposed system uses solar collectors as auxiliary solar thermal compressors and integrate them with air conditioning systems. The proposed solution will increase the cooling system efficiency, reduce electricity consumption and pollution.
Principles for reducing the phase shift between instantaneous analogue and discrete signals and the corresponding values in the sampled values (SV) stream of a digital substation
Authors: Serebryannikov A. V. , Zinovev D. V. , Kravchenko G. A. , Kalinin A. G. , Ilin D. V. , Ilina L. A.
Published: October 2019

There are numerous publicly available articles on digital substations, including those dedicated to current and voltage measurements, time synchronization, test systems development, principles of substation design, and other aspects of this topic. But the phase shift between instantaneous signals and the corresponding values in the SV (sampled values) stream has been little discussed. We can list the following principles to reduce the phase shift between instantaneous analogue and discrete signals and the corresponding values in the SV stream. 1) Exclusion from the device, of non-essential elements that introduce additional propagation delays of analogue and discrete signals, provided that such exclusion does not adversely affect the device performance or characteristics. 2) Reduction of the delay time for the other device elements to the minimum values. 3) Adjustment of the delay time of some device elements or addition of special delay elements to equalize the time of signal propagation over analogue and discrete channels. 4) Consideration of the total delay time of signal propagation over analogue and discrete channels and adjustment of the time stamp in the SV frame. The article provides examples of application of these principles in signal generation and measuring devices and phase shift meters.
Analysis of the efficiency of energy systems of long-distance energy transport
Authors: Tyurina E. A. , Mednikov A. S. , Elsukov P. Y. , Sushko S. N.
Published: October 2019

The article presents the results of the comparative efficiency of energy systems for the transfer of natural gas energy over long distances from large deposits to final consumers. The result of the research is the limits of competitiveness of systems based on direct current transmissions, gas pipelines, a promising technology for converting natural gas to synthetic liquid fuel (SLF) methanol on installations of combined production of SLF and electricity based on their detailed mathematical models.
EXPO-2017: engine of alternative types of energy of the future
Authors: Ayupova Z. K. , Kussainov D. U. , Madalieva Zh. K. , Rakhimova G. D. , Saparov B. Zh. , Seralieva A. M.
Published: October 2019

The relevance of the topic is the development of alternative energy and search for new sources of energy as the main world trend of the twenty-first century. Using the energy of earth, wind, water and sun, humanity will stop polluting the environment and save valuable fossil resources. The Republic of Kazakhstan is well known with its stability and successful development. It is quite important not only for the country, but for the whole Central Asian region. Nowadays it is necessary to improve the energy returned on investment, and to make producing it cheaper. Wind power will be nearly very important in coming years. Probably the most established renewable energy source, besides hydro, becomes as cheap as fossil fuels in many markets around the world. The different types of the renewable energy were examined in this article.
On modeling on a single-winding forced valve electromagnet in a circuit with a ballast resistor
Authors: Gracheva Ye. I. , Petrov V. N. , Russova N. V. , Samuilov D. V. , Svintsov G. P. , Protosovitski I.V.
Published: October 2019

We have built a mathematical model of starting up a forced U-shaped valve electromagnet of static voltage taking into account dynamic parameters and characteristics. The offered model takes into account the influence of eddy currents in the closed circuits of the magnetic system. At the first stage we have developed a mathematical model that allows to determine optimum dimensions, to minimize the mass of active materials (the total mass of copper for windings and ferromagnetic steel), that are used in construction of the electromagnet. Then, based on a known method of integration of the dynamic equations we have obtained an actuation model of the valve magnet taking onto account equivalent resistances of cores of both circular and rectangular cross-sections. Modeling of dynamic parameters and characteristics was done taking into account secondary con-tours without increasing order of differential equations. We list calculated values of dynamic parameters and characteristics of the electromagnet in a circuit with a balance resistor.
Method of modeling electric drives with digital control systems
Authors: Mashkin A. , Fedotovsky S. , Gunina M.G. , Solovev Ya.Ya. , Dyganova R.R.
Published: October 2019

The use of computer equipment in the form of industrial controllers in the control systems of automated electric drives leads to the fact that standard methods and techniques for numerical simulation of such systems do not provide sufficiently reliable results. The feature of such systems is different mathematical description of the digital control system and the analog power section of the electric drive. The article proposes a modeling technique which takes into account the specifics of construction of modern electric drives.
A simplified model of gas turbine unit adaptive control
Authors: Kavalerov B. V. , Ziyatdinov I. R. , Basargin S. D.
Published: October 2019

The article explores the possibilities of building automatic control systems for gas turbine power plants. The use of the principles of adaptive control with a reference model and a signal effect is being studied. As an adaptation method, a method based on the Lyapunov function is used, in order to reduce the time for searching for an extremum. There is a need to ensure the specified indicators of electricity the quality in a constantly changing electrical load and changes in operating modes of the power plant in gas turbine units. The article presents a model of a gas turbine installation for the study of adaptive control. It is shown that the improvement of one coordinate is possible to obtain due to some deterioration of the other coordinate. For further study of this problem, a simplified second-order dynamic model has been constructed. With the help of such a model, complex studies of various stages of adaptive control were carried out. Results were obtained by varying the parameters of adaptive control and simulation parameters. The research results are designed to find the optimal ratios of adaptive automatic control systems parameters for power industry gas turbine plants.
Increasing the laser-acoustic method efficiency for testing metal products by using 3D visualization
Authors: Ismagilov I. R. , Kalimullin R. I. , Borisov A. N.
Published: October 2019

The article proposes a solution to the problem of increasing the efficiency of the laser-acoustic method of non-destructive testing. An approach to increasing the probability of detecting surface defects of microscopic dimensions in metals is considered. Due to the increased accuracy of determining defect parameters, the detail of 3D visualization of testing results was improved.
The use of industrial wireless networks based on standard ISA-100.11a and protocol WirelessHART in process control
Authors: Chupaev A. V. , Zaripova R. S. , Galyamov R. R. , Sharifullina A. Y.
Published: October 2019

This article considers wireless technologies in the field of automation of technological processes and production in the energy, chemical, petrochemical and oil refining, gas, railway, mining, metallurgical and other industries where the use of wireless industrial devices is necessary due to specific features. Wireless technologies provide the ability to connect measuring devices directly to the wireless network with further transfer of information through a wireless gateway to an automated control system. This article will discuss the types of wireless networks that are classified according to the possible range of action (Wireless Wide area network, Wireless Local Area Network, Wireless Personal Area Network). The most common standards of organization of wireless industrial networks, including IEEE 802.11 b/g/n, IEEE 802.15.1, IEEE 802.15.4, IEEE 802.16 e, will also be considered, including in the field of management of chemical-technological processes and productions. Data transmission protocols ISA-100.11.a and WirelessHART and a number of their features will be analyzed. The basic standard network structures based on the ISA-100.11.a and WirelessHART protocols, their typical components, will be considered. The article provides an analytical comparison of the ISA100.11a and WirelessHART over the OSI network model layers, including the physical layer, the link layer, the network layer, the transport layer, the session layer, the presentation layer and the application layer (process control, management, security, application sublayer). The main stages of calculation of wireless industrial network are given, in particular: calculation of the network information load, calculation of the network’s energy parameters, frequency-territorial planning, development of the communication scheme and interface with external networks. The formulas for calculating the network information load using Nazarov’s methodology, calculating the network’s energy parameters, taking into account the overall losses in the propagation of radio waves, including losses in free space, losses in partitions and walls inside the building, losses due to interference and signal fading are given.
Feasibility study of conventional, DVSP, and THD-based heat supply systems
Authors: Romanov D. O. , Yavorovsky Y. V.
Published: October 2019

Thermohydraulic dispatcher (THD) can be widely used in district heating systems. Heat source is one of the possible places of its application. In this case, it is possible to achieve hydrodynamic separation of heat source and heat supply network. This paper deals with comparison of three types of heat substation connection to heat source: conventional system, DVSP system, THD-based system. The latter two have variable speed pumps instead of throttling valves. Based on electricity consumption and investment costs calculations, total discounted costs of three systems were estimated. In result, DVSP system is more beneficial, while conventional system and THD-based system have high operational and investment costs accordingly.
Lean manufacturing as a tool for increasing labor productivity at the enterprise
Authors: Ketoeva N. , Soldatova N. , Ilyashenko S.
Published: October 2019

Since the beginning of utilization of the lean production concept it has passed several stages of implementation. The first stage failed because manufacturers that introduced lean production methods were isolated from each other; whereas in the second stage, these companies learned from their experiences. Since then, the lean production concept has been used to organize production and reduce costs, despite the fact that markets are becoming more demanding due to individualization of demand and variability of conditions. Digitalization suggests methods for adapting the concept of lean production to such a market indicator as company performance. Thus, the utilization of the concept “Industry 4.0” can initiate the third stage of development of the practice of lean manufacturing in terms of analyzing the productivity from a multidimensional point of view.
The prevalence of renewable energy in the Russian energy market
Authors: Konnikov E. A. , Osipova K. V. , Yudina N. A. , Korsak E.P.
Published: October 2019

The energy crisis of 1973-1974 showed that it is difficult to constantly increase the power supply of production, based only on traditional energy sources. The power supply of society is the basis of its scientific and technological progress. It means that it is necessary to introduce unconventional, alternative energy sources more widely. Unlike fossil fuels, unconventional forms of energy are not limited to geologically reserves. Their use and consumption does not lead to the inevitable exhaustion of stocks. However, currently, the reform of world energy markets and increasing the share of renewable energy sources in their structure is a long and innovative process. Lots of countries (Russia in particular) bear significant risks because of reforming their own energy market, which causes a slight increase in the share of renewable energy sources. In this regard, the purpose of this study is to analyse the influence of environmental factors on the development of renewable energy sources in Russia. The result of this study is a system of econometric equations, which allows to evaluate the impact of changes in key drivers of the development of the renewable energy market.
Comparative analysis of options for project financing of energy development based on renewable sources
Authors: Luskatova O. V. , Roberts M. V. , Dolzhenko E. N.
Published: October 2019

The features of the dielectric rod defects and the rod-electrod defects of polymer insulators were investigated by using the developed complex method of contactless remote diagnostics of high-voltage insulators health, which includes the initial detection of local areas with elevated electric field gradients as well as measurement of a set of partial discharges characteristics. The radiation of extra-large partial discharges was detected and partial discharges features were investigated. According to the measurement results, a diagram was constructed for the electro-physical processes that accompany the emission of extra-large partial discharges; and the reasons for their occurrence were established.
Toward the possibility of 229Th isomeric nuclear state excitation by two-color laser field
Authors: Andreev Anatoli , Savel’ev Andrey , Stremoukhov Sergey , Shoutova Olga
Published: October 2019

The process of high harmonic generation (HHG) has a wide area of different applications, in particular, in nanoscale imaging, study the nanoscale energy transport in complex molecules and solids, probe the charge and spin dynamics with the femtosecond time resolution, etc. Here we discuss a possible application of HHG effect related with the study of nuclear transition dynamics. We analyse the efficiency of excitation of the isomeric nuclear state 229mTh by the fifth harmonic of Ti: Sa laser generated in thorium by two-color femtosecond pulse consisting of the fundamental and thensecond harmonic of Ti: Sa laser (ω+2ω). It is shown that the rate of isomeric state excitation can be enhanced significantly with respect to other nucleus excitation processes in laser plasma or by an external coherent source at the resonance wavelength. This enhancement is due to the discussing process of “nonlinear laser nuclear excitation”.
Atmosphere channel for “last mile problem” in quantum communication
Authors: Latypov I.Z. , Akat’ev D.O. , Chistyakov V.V. , Fadeev M.A. , Khalturinsky A.K. , Kynev S.M. , Egorov V.I. , Gleim A.V.
Published: October 2019

The work is devoted to the creation of a telescopic transceiver system that organizes an atmospheric point-to-point communication channel, and its use for quantum communication at sideband frequencies as the “last mile” for data protection in a geographically distributed data centre
Metrology of low-photon light sources
Authors: Magnitskiy Sergey
Published: October 2019

In the report the parameterization of few-photon light sources is discussed. This question relates to a new area of research in quantum optics - the development of methods for characterizing optical components and devices used in optical quantum technologies that are supposed to be used in industry. Apart from, the recent results in this field obtained in the Laboratory of Experimental Quantum Optics and Nanophotonics of M.V.Lomonosov Moscow State University are briefly presented
Position-based cryptography by means of quantum and classical schemes, using multiple-valued logic computing
Authors: Bykovsky Alexey Yu.
Published: October 2019

Quantum and classical schemes of position-based cryprography are to transfer confidential message to an abonent with localised space position. Known verification proceedures are based on time-delay measurements of response signals and can`t provide unconditional security, as the eavesdropper can always cheat verifiers with the help of false signals. In order to raise the relative level of security, it is proposed to combine the quantum verification scheme by D.Unruh with multiple-valued logic methods.
A monolayer of three-level quantum Λ-emitters: A perspective system from the viewpoint of nonlinear optical dynamics and nanophotonics
Authors: Ryzhov Igor , Malikov Ramil , Malyshev Andrei , Malyshev Victor
Published: October 2019

The nonlinear optical response of a monolayer of regularly spaced three-level quantum emitters with a doublet in the ground state is studied theoretically. It is found that the system demonstrates multistability, self-oscillations and dynamical chaos. In a certain frequency range, the monolayer operates as a perfect bistable mirror.
Creation of chemically conjugated multichromophoric complexes based on meso-substituted metalloporphyrins
Authors: Starukhin Aleksandr , Gorski Aleksander , Pavich Tatsiana , Kniukshto Valerii. , Gaina Luiza
Published: October 2019

New multichromophoric complexes based on metallocomplexes of meso-tetraphenylporphyrins chemically conjugated with curcumins and para-terphenyls have been synthesized. Four bands appeared in the luminescence spectrum were assigned. Two first bands in the spectrum at 465 and 497 nm correspond to the luminescence of curcumin, and the bands at 619 and 677 nm belong to the luminescence of the meso-substituted metallocomplex of porphyrin. Similar spectral data are manifested in the fluorescence spectra of a complex with four para-terphenyl substituents. For the last one compound the energy transfer between the molecules of the para-terphenyl and metalloporphyrin was postulated with the efficiency of about 20%.
Étude de l’effet du temps de traitement alcalin de fibres palmier sur le comportement mécanique des matériaux à base d’argile rouge de la région de M’sila
Authors: Koadri Zainate , Benyahia Azzedine , Deghfel Nadir , Belmokre Kamel , Nouibat Brahim , Redjem Ali
Published: October 2019

Ce travail s’inscrit dans le développement de matériaux locaux, telle que la fibre végétale (fibre de palmier) et l’argile rouge du sud Algérien, largement utilisées dans la préparation des briques, comme matériaux de construction rurale. Les fibres végétales possèdent des propriétés très intéressantes, elles sont : renouvelables, biodégradables et le rapport coût/légèreté faible. Leurs propriétés mécaniques sont très importantes. Cependant, le problème prédominant dans ce type de matériaux composites est la faible adhésion de l’interface matrice-fibre, attribuée probablement, à la nature de la surface et au caractère hydrophobe des fibres naturelles, conduisant ainsi, à des propriétés mécaniques faibles pour le composite envisagé. Le but de cette étude consiste à traiter la fibre de palmier par une solution basique d’hydroxyde de sodium (NaOH 4 % [m/v]) durant des périodes variables : 3, 7, 24 et 48 heures, afin d’améliorer l’adhésion interfaciale. Les résultats obtenus à partir des essais réalisés sur le composite renforcé par les fibres de palmier traitées durant 7 h ont montré une nette augmentation quant à la résistance, à la flexion et à la compression ; cette croissance est respectivement de l’ordre de 57 et 60 %, comparativement au composite renforcé par les fibres non traitées. On peut déduire que les fibres de palmier peuvent être considérées comme l’un des matériaux appropriés pour le renforcement de l’argile.
Thesaurus as a Tool for Teaching Abstract Writing to Graduate Students
Authors: Bazhutina Marina M. , Brega Olga N.
Published: October 2019

This study, grounded on the need in the permanent development of competences formation methodologies to meet employers’ demand, presents an effective didactic tool for teaching ESP to graduate students. The paper describes thesaurus modelling principles applied to teaching foreign language terminology to students of Welding Production Technology and Equipment at Togliatti State University. It was discovered that semantic relations between thesaurus items correlate with relations between research methodology components. Then the authors propose three stages which enable educators both to organize their term management work and to train a metalinguistic competence in scholarly abstract writing. The first stage contains two algorithms of building a thesaurus based on inductive and deductive methods of thinking accordingly. At the second stage the semantic relations between thesaurus items are used to determine methodology components of a bachelor’s thesis by means of correlating these semantic relations to the relations between research methodology components. At the final stage common cliches for abstract writing are introduced to students.
The concept “God” (case study: phraseological units in the English, Russian, Tatar and Turkish languages)
Authors: Bazarova L.V. , Bilyalova A.A. , Shakirova R.D.
Published: October 2019

The concept is represented as a unity of perceptions, representations, and assessments existing in the communal and individual linguistic consciousness and can be expressed at all language levels, characterizing English, Russian, Tatar and Turkish linguocultures and revealing unique and universal features. The sphere of concepts of each national culture has a number of its unique and distinctive features, expressed in the representation of God. In English, Russian, Tatar, Turkish linguocultures some of the described features can be considered as a part of a conceptual component, but in some cases, they are completely absent. On the periphery, there is a visual image of God, which proves the fact that concepts of God in the researching cultures are in some way different. The phraseological unit scope of the concept “God” contains the conceptual “soul”, “fate”, “goodness”, “light” which serve to fully understand and reveal the semantic structure of the concept being studied.
Semantics of Musical Text as a Key Condition for Development of Secondary Musical Personality
Authors: Cheremisova Irina V.
Published: October 2019

From the standpoint of the aesthetic and semiotic approach music is understood as a complex psychosemantic text. Theoretical analysis of studies of the psychological connection between music and speech allowed to develop the concept of secondary musical personality as a sort of secondary linguistic personality. The author has developed a musical-semantic pattern of development of secondary musical personality in the educational process. This theoretical pattern is a system of interrelated conditions and factors of development of secondary musical personality. The author determines complexity, polysemy and semantic diversity of the musical text as the key condition. The author attaches special importance to forming potentials of classical music masterpieces in the musical-semantic pattern. The author identifies the artistic, spiritual and ethical levels of music as the main criteria of the musical masterpiece.
Cognitive approach to auditory observed from the position of the Observer – interpreter
Authors: Eryomina Olga
Published: October 2019

An Observer can act as an instrument of conceptual and semantic analyses. The analysis is not reduced to sensor perception only. Such aspects of perception as mental, evaluative and affective or emotional are not less relevant. In this case an Observer acts an evaluating and perceiving party. The Observer’s functioning is strongly affected by the nature of the observed. The permanent fact is that when we are discussing an Observer there is always something observed. An Observer perceives the subject matter and evaluates the situation as a whole. The observed phenomenon and events are interpreted by the Observer through speech-act verbs such as to hiss, to bleat, to grumble, to babble. The semantic meaning of these predicates contains a perceptive and evaluative component, which in its turn means an Observer present. The last one perceives, interprets and evaluates not just the proposition of the speech act, but the so called paralinguistic component, not less relevant in the communicative process. The article considers an issue on different cognitive and affective states of an Observer – interpreter of a communicative speech act, caused by a specific speech manner of communicants.
Developing students’ cognitive and communicative skills when learning foreign languages
Authors: Tsoupikova Helena , Tsyguleva Margarita , Fedorova Maria
Published: October 2019

The article is devoted to the problem of forming and improving students’ cognitive skills in connection with development of communicative skills. The aim of the article is to study the effects of designing supporting schemes of different types on development of students’ cognitive and communicative skills in the process of learning a foreign language. The authors summarized research findings on regularities of foreign language learning by university students and revealed conditions of enhancing the effectiveness of this process. The authors have justified the necessity and appropriateness of supporting schemes application when teaching foreign languages that are analogues of inner speech universal subject codes. The authors came to the conclusion that one of the most efficient ways to form and develop students’ cognitive and communicative skills is to involve them in self-education, provide them with an appropriate algorithm of conscious and independent work with information, with each stage being constantly self-controlled.
Pragmatic Aspect of Phraseological Units in the English Language
Authors: Fedoryuk Angelika
Published: October 2019

The paper deals with the phraseological intensifiers considered as means of categorization of language intensity which is defined as the amount of illocutionary force that the utterance has, degree of strength of verbal expression of the speakers' intentionality. The paper reveals the pragmatic peculiarities of the phraseological intensifiers in conversation in which they serve as an instrument used by individuals in order to attain certain communicative goals, to convey the speaker pragmatic meaning. In argumentation, which is believed to be a macro speech act, having the illocutionary point to convince a reasonable critic of the acceptability of the standpoint and to resolve differences of opinion, the phraseological intensifier is used to increase the illocutionary force of the argument for and against the expressed standpoint.
Constellation of risk factors of the reproductive potential of youth
Authors: Filippchenkova S.I. , Evstifeeva E.A. , Stolnikova I.I.
Published: October 2019

The concept of reproduction as a value-semantic formation, a natural biological process, a bloodrelated nature, and a psychological responsibility for preserving the genus is transforming in modern youth. Youth perceptions of life quality, demographic projections, levels of claims, degrees of satisfaction with life situations, and behavioral patterns are influenced by such psychological predictors as responsibility, reflexivity, value-semantic matrix, personal risk factors of decision making. The following issues were analyzed: sexual behavior, reproductive behavior, reproductive attitudes, reproductive function risks, attribution of responsibility, contraception, bad habits, sexually transmitted infections, caring for health in general and reproductive health in particular, needs for specialists in the field of sexual and reproductive health, demographic expectations of young people, awareness of the federal demographic policy and psychological support, social institutions aimed to preserve reproductive health, gender differences in the demographics of expectations. Attitudes of young people to sexuality and reproduction, family-marriage relations were studied. Sources of information on these issues were determined and their effectiveness was evaluated. Identification of features of the relationship between reproductive health and psychological characteristics of youth was embedded in the authors’ psychological model.
Hermeneutics of concepts of the existential-psychological healing model
Authors: Filippchenkova S.I. , Evstifeeva E.A. , Murashova L.A.
Published: October 2019

The article describes an interdisciplinary research project on the management of health-related quality of life of cancer patients. The project involves theoretical and applied studies of health-related quality of life of breast cancer patients, their existential and psychological characteristics. A comparative analysis of the diagnosis of quality of life in medical (objective) and psychological (subjective) assessments was carried out. The key concepts of the existential-psychological model of healing - pain, the existential meaning of pain, illness, fear – were revealed. The possibility and effectiveness of complementation of the medical and existential-psychological models of healing using key concepts - the existential-psychological model of managing health related quality of life, existential meanings of pain, illness, fear – were analyzed. The existential-psychological model of healing is psychometric tools used for describing, explaining and generalizing psychological and existential data on a cancer patient. New psycho-diagnostic tools are used in medical professional practice taking into account requirements of personalized medicine and problems of maintaining health-related quality of life of cancer patients; adjustment of the behavior of cancer patients using existential experiences, reflexivity, trust, responsibility, and health-related quality of life.
Development of professional readiness of teachers to work with children exhibiting aggressive behavior
Authors: Istrofilova Olesya
Published: October 2019

In the pedagogical theory and practice, there is a contradiction between the presence of a large number of aggressive school children and poor readiness of teachers to interact with aggressive teenagers. The paper presents the results of the experiment on the development of professional readiness of future teachers to work with children and adolescents exhibiting aggressive behavior.
Migrant’s Semiotics in the novel “The 45th Parallel” by Polina Zherebtsova
Authors: Milostivaya Alexandra , Bronskaya Ludmila , Makhova Irina , Chudnov Olga , Kizilova Natalia
Published: October 2019

The article is devoted to the socio-cultural and linguistic analysis of the characteristics of mutual penetration and mutual determination of Christian and Muslim semiotic culture codes in migration discourse of North Caucasus that creates the effect of syncretism of “ours” and “theirs” in speech behavior based on the novel “The 45th Parallel” by Polina Zherebtsova. The story takes place in Stavropol, on the 45th Parallel of the Earth. The documentary novel written in 2005 – 2006 is based on personal diaries of the author, a refugee from Grozny. The aim of this article is to analyze mentalities of Russian (Christian) refugees from the Chechen Republic in the fiction. The research makes it possible to conclude that secondary acculturation of migrants has modified their axiological picture of the world, psychology, lifestyle and sociocultural habits of migrants; together with attributes of their culture, they have preserved relics of the worldview of societies, which they have left. So it is possible to speak about a palimpsest of Christian and Muslim semiotic culture codes “Clothes”, “Food”, and “Interpersonal relations” in migration discourse of North Caucasus. The main methods of the research are the semiotic analysis and the hermeneutic interpretation of discourse.
Interrelation of scientific and folk economics in the prothteconomic concept MONEY
Authors: Moiseeva Irina , Remizova Valentina , Nesterova Tatyana
Published: October 2019

In the paper the concept MONEY is considered to be one in a special class of concepts which we propose to call prothteconomic concepts, as they combine prothtologic (everyday) and academic (economic) elements. The prothtologic element of the concept reveals itself in the common national collective conscience, while the academic component manifests itself in the scientific conscience. The vocabulary used by the common national collective conscience describes the concept under study with different semantic attributes. Proverbs as parameological units fully illustrate the way the common national collective conscience expresses ideas and phenomena. The scientific conscience deals with terminological word stock. The comparison of the prothtologic components of the concept with the economic ones finds out coincidence in the plane of contents. As regards the plane of expression, it differs in a considerable number of instances. So the common national collective conscience has worked out its folk economics which has much in common with scientific economics and is stored in proverbs.
University students’ social interaction type specifics in the learning process
Authors: Rodina Olga , Gladkova Liubov , Selivanova Olga
Published: October 2019

The author highlights the importance of human social interaction in training university students.The paper presents an overview of the conceptual aspects of social interaction in scientific research.Based on theoretical approaches to the definition of social interaction, the paper defines “social interaction” in the context of the classroom activities.The aim of the paper is to investigate and define the first-year university students’ interaction specifics in the learning process.The experiment involved 118 students from the Institute of Geology and Oil and Gas Production.On the basis of K.Thomas-Kilmann’s test questionnaire focused on determining a leading interaction type in conflict situations, social interaction type specifics of the first-year students of technical specialties were determined and described.
Features of pedagogical activity in development of communicative universal learning actions in younger school students
Authors: Ryleeva Anastasia Sergeevna , Emanova Svetlana Vladimirovna , Sokolskaya Margarita Afanasyevna , Kazantseva Elena Alexandrovna
Published: October 2019

Annotation.The low level of communicative competence of students is reflected in the increase in the number of children with high social and interpersonal anxiety.Cases of rejection and harassment of children by classmates, loneliness, hostility and aggression towards peers are increasing.In this regard, there are requirements for the professional competence of the teacher working with children of primary school age.The primary school teacher has a task to organize effective pedagogical activity and to aim it at education of children‘s’ ability to cooperate and work in group, to be tolerant to various opinions, to be able to listen and hear the partner, to state the point of view on a problem freely, accurately and clearly.