bluuebunny/crossref_metadata_2025 huggingface dataset:
How Production Factors Affect Sustainable Development in a Region
Authors: Solomonov M P , Pakhomov A A , Okhlopkov G N
Published: April 2020

The paper assesses how production factors affect the sustainable development of Yakutia, a Russian region. The function of sustainable development assumed here is the total shipments of the region’s administrative districts. The function of territorial arrangement of production has the following factors as variables: agglomeration, labor, capital, and infrastructure security. Analysis uses statistics on those factors over 2006-2017, operational data from sectoral ministries, and the 2002/2010 National Census data. The research applies integral assessment of the factors reduced to dimensionless values of 0 to 10 for comparability. Shipments are adjusted for inflation, with 2006 prices being used as the baseline. For price comparison, the value products shipped from industrial districts at global prices is adjusted for exchange rate fluctuations. The next step is to compute the coefficients of correlation between these factors and the total shipments with a breakdown by type: agriculture vs industry. A sufficient retrospective, an array of comparable data, and multiple correlation analysis have produced an output that is close to the actual situation in the region’s economy.
Regional Peculiarities of Optimizing the Marine Vessels Reproduction: Organizational and Economic Aspects
Authors: Osipov V A , Krasova E V
Published: April 2020

The article is devoted to the questions of optimizing the regional organizational and economic system of marine vessels reproduction. Challenging climatic and economic conditions of Russian marine vessels operation make this topic relevant and call for modern managerial approaches to the reproduction processes in the Russian industry. The article focuses on the research and practical problems of reduced economic efficiency of vessels reproduction due to the influence of regional and economic conditions for their operation and repair. The purpose of this research is to review the regional peculiarities of optimizing the marine vessels reproduction from the organizational and economic points of view. One task of the research involves testing the author’s methods for cost calculation that reflects the increase in the fleet reproduction achieved through combined optimization of ship building and ship repair programs as exemplified by the fishing fleet of Primorsky Region. The authors have applied the ideas of modern efficiency theory and the shipbuilding and ship repair concepts in Russia to justify application of the methods that involves determining the optimal annual number of vessels based on the effective operation coefficient depending on the area. Calculations show that optimization of the vessels number and upgrading of the major industrial facilities of the marine fleet can result in the total saving of 1.3% including savings on repair by 47.2%.
Russian Coal-Mining Regions Clustering Based on the Analysis of Investment and Innovation Activity
Authors: Sablin K S , Kagan E S , Chernova E S
Published: April 2020

The paper is devoted to the clustering of coal-mining regions of Russia based on the analysis of their investment and innovation activity. The indicators characterizing investment and innovative activity were formed. The group of investment indicators included indicators highlighting the total shares of investment in fixed capital by types of activities related to the extractive and manufacturing industries. To assess innovation activity the total share values of the costs on technological innovations of extractive and manufacturing organizations were calculated. The results of hierarchical analysis fulfilled on the group of investment activity indicators allowed authors to identify four clusters of coal-mining regions. The coal-mining regions were divided into three clusters based on the indicators of innovation activity. Verbalization of the results allows authors to conclude that the most of coal-mining regions are characterized with the following: low/medium level of investment activity in extractive and manufacturing industries; medium level of innovation activity in extractive industries and medium/low level of innovation activity in manufacturing industries. On the whole, coalmining regions are not able to modify the general «picture» of resource-mineral-raw materials dependency of the Russian economy in the short-term period.
Comprehensive Utilization of Multicomponent Mineral Resources of the Arctic: Challenges and Solutions
Authors: Larichkin F , Tsukerman V , Ivanova L
Published: April 2020

The variety of mineral resources, complex multicomponent composition of many of them, various technological methods for comprehensive processing at different production stages, as well as the instability of competitive market environment, cause the multivariate functioning and development of the system of mineral resources use. The main scientific problems of evaluating the economic feasibility of extracting valuable components in the combined processing of multicomponent ores and the responsibility of subsoil users for the full use of Arctic resources are considered. The special relevance of rational use of mineral resources taking into account specific Arctic conditions, including increased production costs, is noted. Scientifically based principles, tasks and methodological approaches to determining the economic efficiency of integrated multi-productive use of mineral resources are proposed. For successful large-scale realization of the benefits of integrated development and use of mineral resources, the need for further scientific research, as well as the formation of a special State program to solve the problem of integrated use of the Arctic subsoil, is shown.
The Impact of Oil Shocks on the Ruble Exchange Rate
Authors: Pikhteev Y N , Novopashina A N , Korneychenko E N
Published: April 2020

This paper investigates the impact of oil price shocks on the Russian ruble exchange rate at different time periods during 2002-2019. We apply two-variable linear regression model and vector error correction model for high-frequency (daily) data at intervals depending on monetary policy of the Central Bank of Russia, fiscal rule, crises and international sanctions. The main finding is that the effect of oil price shocks on Russian ruble exchange rate varies greatly according to monetary and fiscal policies. Stabilization monetary and fiscal policy results in weakening of the impact of oil price shocks on the ruble exchange rate (2002-2008). During the period of oil price falling and passive monetary and fiscal policy (2014-2016) the effect of oil price changes on exchange rate was the most intense. Our findings confirm previous empirical results that government play a crucial role for short-term exchange rate equilibrium.
Technology to Improve the Quality of Mold-Ripened Cheeses
Authors: Zemtsov N G , Manilevich N N , Cheremushkin I V
Published: April 2020

This paper dwells upon the key issues of food security in the Russian Federation. Food security is seen as a critical aspect of effective economic, social, and political functioning. The paper presents analysis into the today’s cheese market as affected by rapid changes in the economic relations. It further demonstrates how the Russian cheese market operates when facing import sanctions and restrictions. Cheese assortment tends to expand. The authors hereof consider the opportunities to substitute the imported delicacy cheeses. All of this enables formulating objective, logically sound, and appropriate approaches to assessing the consumer market while also presenting a comprehensive view of safe foods.
More Efficient Daily Industry in the Face of Market Volatility and Risks
Authors: Vasilenko I N , Cheremushkin I V , Slepokurov Yu I
Published: April 2020

The paper evaluates the state-of-the-art and trends in the milk and dairy market; focus is made on cheese and cheese products. Russia’s milk production is on the rise. Milk is mainly produced by major agricultural companies. The paper describes the core issues facing the Russian cheese market in the light of volatility and risk intensification; it formulates how investment in this industry could be boosted.
The Effectiveness of the Import Substitution Policy in the Oil and Gas Engineering Industry of the Russian Federation at the Present Stage
Authors: Lebedeva N E
Published: April 2020

This article analyses the state support effectiveness in the field of the oil and gas engineering industry development at the current stage. Low competitiveness of the oil and gas equipment made in Russia has been linked to technical and economical specifics of the industry sector (high equipment capacity; low level of reliability; non-compliance with the international standards, including ecological standards; obsolete design and non-compliance with the ergonomics standards; virtual absence of customer service system; frequent shipment delays and failure to ensure shipment completeness; lack of client awareness of output products and their characteristics), as well as current situation in related industries, such as metallurgical industry. The author highlights the key issues in the development of this sector, including those inherited from the Soviet time, analyses the main goals of the import substitution policy implementation in the leading technological areas of oil and gas engineering development.
Wind Energy in the Southern Regions of Russia: History, Current State and Development Prospects
Authors: Lukyanova Ye Yu , Chetyrbok P V , Filippov D M
Published: April 2020

The article relevance is to suggest possible principle of resort regions activities improving by modern technological innovation adaptation. There were applied methods of comparative, statistical analysis, synthesis, content analysis, economic modeling and data on resort and spa sector functioning and wind power plants construction and implementation. The development strategy of wind energy involves the creation of completely new industry; the task is not only to construct wind power plants (WPP), but also create system of technical regulation, training, organization of localization of wind turbine production, its certification and development. Solving this problem requires formation of new competencies for creation and management of wind farms, organization of wind turbines mass production, organization of after-sales services, competencies in marketing, development and sales of new products.
The Algorithm for Evaluating Availability of Wood Resources Considering Ecological, Technological, Technical, Transport and Economic Restrictions
Authors: Pozdnyakova M O , Mokhirev A P , Medvedev S O , Gerasimova M M , Mammatov V O
Published: April 2020

The article substantiates the relevance of the algorithm development for assessing the availability of wood resources. The actual conditions of the Russian timber industry complex are considered. The authors propose an algorithm with regard the various aspects of this issue and possible restrictions. It includes a consistent assessment of the environmental, technological, technical, transport and economic availability of wood at a particular site. Prospects of application of the developed algorithm are defined.
State Backing of Modernization of Main Funds of Agricultural Purpose within a Matter of Increasing Food Security of Russia
Authors: Gnezdova J V , Semchenkova S V , Kuchumov A V
Published: April 2020

Logistical support is one of the main factors for the modernization of agricultural production and the agro-industrial complex and for the providing its stable innovative development (Russia can get out of the crisis of food dependence and increase national food security only this way), the level of production intensification, branch labor productivity, its competitiveness depends on it. The purpose of the research is the foundation of ways to improve the efficiency of the use of basic productive assets for agricultural purposes Downswing of number of equipment took place from 1995 to 2000. The almost complete liquidation of large agricultural enterprises, the transfer of equipment to private farms, the crisis situation of the remaining enterprises led to the loss of machine and tractor fleet. By 2016, the fleet of basic equipment had cut totally in 14 times, including tractors - in 12 times, combines: grain harvesting - in 11 times, flax harvesting - 103 times, forage harvesters -9 times, milking parlor - in 9 times. Results: analysis of measures of direct state regulation, which involve the development, approval and financing of investment projects carried out independently and together with foreign investors; giving of guarantees on a competitive basis; placement of budgetary funds in financing of investment projects on a competitive basis; issue of bonded and guaranteed targeted loans and other forms.
Economic Models and Methods for Assessing and Regulating the Sustainability of Distributed Post-Carbon Energy Development
Authors: Alabugin A , Shashkin V , Sun Y , Jiao S , Xiong Z
Published: April 2020

The content of the article reveals the results of the analysis of trends in the new industrialization of industry in estimates of the development of distributed post-carbon energy. Models and methods for assessing the stability of the spatiotemporal dynamics of the integration of resources and the processes of combining technologies for the production and consumption of energy and energy carriers in the formation of the energy complex are supplemented. The evaluation tool differs in its ability to model the indicator-property by factor factors and the criterion of a minimal imbalance between the interests of producers and consumers of an expanded number of types of energy products under cogeneration conditions, reducing the costs of non-renewable resources and losses. This allows us to regulate the stability of the normative level of sustainability and to justify the overall strategy of energy-saving development of the complex.
Problem Analysis of Agriculture Development in Russia
Authors: Naumova O A , Svetkina I A , Tyugin M A
Published: April 2020

Currently, in the Russian Federation, there is increasing attention to the country strategic agricultural sector. Since the time of “perestroika” and further collapse of the USSR in 1985-1991, that resulted in breaking of economic ties between economic entities, the agriculture industry slowed down significantly and was in decline. The article conducted the study of key indicators of current state of agricultural sector in RF. The importance of agriculture in the context of counter-sanctions and import substitution is defined, and the state program for agriculture development and regulation of agricultural markets, raw materials and food is determined. To identify structural problems, the indicators of 1940, 1985, and 2018 were compared. Based on data analysis for these periods, structural problems of agricultural industry were identified, which are the result of underfunding of scientific research in this area. According to current forecasts, the budget surplus of the Russian Federation in 2019 will be about 1.6-1.8% of the total GDP. One of the options for improving the efficiency of agriculture is to use these funds to finance applied research in the field of agriculture. In addition, possible measures are suggested to increase the quality of interaction of agricultural market participants.
Melon Growing Industry Analysis in Modern Economic Conditions
Authors: Koleboshina T G , Varivoda E A
Published: April 2020

The purpose of this study is to analyze the development of the melon cultivation industry in the world and in Russia in the context of globalization and economic integration. Systematic and comparative analyzes of information and statistical data of the Russian Federation and the United Nations were used in the research. Despite the fact that Russia has significant soil and climatic resources for the production of melons and gourds, the crop productivity is almost three times lower than the world average. The main areas of commercial melon cultivation in Russia are highlighted. Data on the main indicators are given (crop productivity, land under cultivation and gross output) for the regions of the Russian Federation and the districts of the Volgograd region. The analysis findings are the identification of the main trends in the development of Russian melon cultivation industry. The main ways to increase the gross output of melons and gourds are outlined. An increase in crop productivity is one of the reserves for growth in the production of food melons and gourds. The determining factor for a high and stable productivity of melons and gourds is the creation and introduction of high-quality varieties and hybrids of intensive type crops into production, as well as the use of new agricultural techniques.
Combinatorial Methods for of Rational Ship-construction Design
Authors: Alekhin M Y , Titov A V
Published: April 2020

The study results on the development of computer-based design methodology for rational operational model of building a ship hull on the stocks are presented in the paper. The formalization of technological restrictions regulating the procedure for assembling the hull has been carried out. The task of choosing the optimal (rational), according to the selected criterion, variant for the execution of work on assembling the hull was solved taking into account the existing technological and institutional limitations. The developed methodology is based on the methods proposed by the authors and relevant for shipbuilding, displaying the set of possible work sequence variants, using search optimization methods to solve select problems and, in particular, the modified branch-and-bound method, as well as probabilistic searches. The article presents some results of the “set” testing in terms of the “duration of construction”. The prospects for digitalizing the process of desired model development using the proposed methodology, as well as the economic consequences of introducing the results into production, are estimated.
Porous Materials in Heat Exchangers Used in Heating
Authors: Aksenov B , Rydalina N , Antonova E
Published: April 2020

This paper proposes using porous metals to boost heat exchanger efficiency. One coolant (Freon) flows through the porous metal, while the other coolant (water) flows through the narrow tubes laid inside the porous metal. The paper presents a mathematical model for a porous-metal heat exchanger, which can find metal temperature changes in any section of the heat exchanger to compare the heat transfer rate of metals of different porosity. Calculation by standard methods is not an option, as the inner surface of pores is unknown. The temperature of hot water inside the heat exchanger is to be found analytically. The obtained equations help determine the degree of cooling the first coolant (hot water). Porous heat exchangers can be used in heating systems.
Advantages and Disadvantages of Using New Types of Photonic Fibers in Fiber-Optic Gyros
Authors: Barulina M , Golikov A , Pankratova E
Published: April 2020

In this paper, two new types of optical fibers are considered that can be used for design of a fiber optic gyroscope with improved characteristics. A fiber optic gyroscope is relatively novel type of sensors for measuring orientation and angular velocity. Characteristics of fiber optic gyroscopes significantly depend on type and quality a light source and a photonic fiber. There are also a number of effects that have a significant influence on the performance of FOG. Some of these effects can be eliminated or minimized by design. Currently, two novel types of optical fibers have been developed - microstructured fibers and multicore fibers. The use of these type of fibers can significantly reduce the effect of temperature influence on the gyroscope. In the paper the advantages and disadvantages of using of microstructured fibers and multicore fibers were discussed.
On the Wear Intensity Ratio of a Striker under Dynamic and Static Conditions
Authors: Bolobov V , Chupin S , Binh Le Thanh
Published: April 2020

The results of experiments on determination of the cylindrical part mass loss of the cone-shaped strikers made of 38XM (AISI P20), У8 (AISI W1-A), and X12MФA (AISI D2) steels, which have been subjected to heat treatment applied by the striking tools manufacturers, and additional cold treatment, with their friction and abrasive wear on granite, are presented. It was found that the strikers made of steel X12MФA with all types of heat treatment show the greatest wear resistance under the wear conditions (static conditions), while the strikers made of 38XM have the lowest wear resistance. Cryogenic treatment and, to a lesser extent, cold treatment increase the wear resistance of all materials. The comparison of set values of wear resistance I
st and hardness HV of the strikers, as well as the analysis of their microstructure allows to conclude that wear resistance of a tool depends not only on its hardness, but also on the type, volume, shape of carbides forming the structure of material used for tool manufacturing. For this reason, after the cryogenic treatment, the tool made of X12MФA steel shows the greatest wear resistance, because its material has the highest content of carbon (∼1.5%) and alloying elements (∼13%), which provides up to 10.8% increase in the number of fine carbide particles in its structure, that ensure wear resistance increase, after the cold treatment. The results obtained for I
st are compared with the earlier obtained data on wear resistance of the same striker at striking upon granite (in dynamic conditions). The conclusion about similarity of the wear mechanisms of the analyzed strikers in dynamic and static conditions is made.
High Frequency Vibrations Arising in System Wheel-Rail. Part I. Mathematical Modeling of the Distribution Stress in Contact Zone Wheel-Rail
Authors: Gridasova E , Loktev A
Published: April 2020

This study is devoted to study of most used existing models of contact two solids, in relation solution of problem dynamic interaction of wheel pair and the rails. In paper also proposed and approbate a new relationship to connect force of interaction, deformation of local indentation, displacement of contacting bodies, their mechanical and geometric characteristics, as well as the parameters of condition during operation in different modes. The stress isolines at point of interaction wheel-rail on straight section of track without taking into account the defects of the contacting bodies are obtained.
Adaptive Process Control System of Fine Turning with the Use of Vibroacoustic Signal on CNC Machines
Authors: Ostapchuk A K , Kuznetsova E M , Karpov E K
Published: April 2020

One way to improve the quality and accuracy of machining is a method based on intervention in the process course. Adaptive control is a promising direction of process control. The creation of machines of high accuracy and rigidity, high resistance tool, the development of active control has led to the fact that the role of the dominant factors that generate processing error, were random factors and primarily such as the fluctuation of the allowance and hardness of the workpiece material, as well as the wear of the cutting tool and the condition of the equipment. The actions of these factors are the main reason that prevents the quality improvement and processing productivity.

The aim of this work is to study the possibility of using the vibroacoustic signal as an information source for the structure and algorithm development of the finishing turning process adaptive control system.

It is established in the work that the signal generated by the technological processing system is random when finishing turning parts from hard-to-process materials. As an information signal for the technological processing system diagnosis, the most promising will be the use of an acoustic signal that directly accompanies the process of parts mechanical processing. Experimental dependences of roughness parameters and vibration signal parameters on cutting conditions (tool feed, spindle speed) and tool wear are presented. The calculations carried out in the work showed that there is a correlation between the vibration signal parameters and the parts surface roughness parameters. The correlation coefficient between these functions reached 0.75…0.85. Therefore, by controlling the level of the vibroacoustic signal, it is possible to estimate the output parameters of the machining process.

On the basis of the conducted researches the adaptive control system structure variant is offered, the information source for which is the vibrations Converter occurring in technological system.
Synthesis of Magnetic Particles Using Electric Explosion of the Wire at the Boundary with the Liquid
Authors: Ermolaev A , Okhulkov S , Titov D , Titov E , Razov E
Published: April 2020

The article describes an installation for producing nanopowders by the method of electrical explosion of a wire. The powders are supposed to be used as a basis for magnetorheological fluids. The article describes the functional installation and the model of the power converter. The electric explosion of the wire was carried out at a voltage of 500 V and 1000 V. The experimental data coincide with the results of the study on the model. The pulse duration is ∼ 10−4 s, and the power is in the range from 1.5 MW to 4 MW. Spherical particles are obtained in the size of 500-5000 n with such parameters of an electric explosion. The surface of the particles was examined on a Tescan VEGA II electron microscope.
Determination of the Dynamic Rigidity of Magnetic Controllable Hydromount Dependence on the Frequency of Vibration
Authors: Gordeev B , Okhulkov S , Ermolaev A , Titov D
Published: April 2020

Building damping characteristic of magnetocontrollable hydromounts and their correlational relationship with dynamic rigidity is considered in this article. Damping characteristics of hydromounts primarily comprise their amplitude-frequency characteristics (AFC). Building damping characteristics of magnetocontrollable hydromounts unaffected by magnetic field was performed basing on vibration tests data on vibrostand Star28, generating broadband random vibration (Random), in order to determine their resonance frequencies at 50 m/s2 input root-mean-square vibration acceleration (RMS).
Free Transverse Oscillations of a Continuum-Discrete Vertical Rod
Authors: Kulterbaev Kh P , Baragunova L A , Shogenova M M
Published: April 2020

The spectral problem of transverse oscillations of high vertical continuum-discrete rods is considered, focused on the application of results in the problems of seismic oscillations. A mathematical model of free oscillations representing the boundary value problem for the hyperbolic differential equation is obtained, which is reduced to the Sturm-Liouville problem by the method of variable separation. Application of finite difference and coordinate descent methods in combination with visualization of calculations in Matlab environment gives own values and attenuation coefficients and further own functions.
Hygienic and Ecological Justification of Natural Light Transportation System in the City of Tyumen
Authors: Sukarnaeva G A , Sulkarnaeva L D , Bulgakova E V
Published: April 2020

This paper performs the assessment of the effectiveness of organization of natural light transportation in Tyumen Region, describes the primary natural light transportation systems: light lanterns, solar tents, glass roofs, Solarspot systems, light wells; determinates advantages and disadvantages of natural light transportation systems implementation, analyses the results of simulation of upper, lateral and combined lightning and measurements and assessment of the illumination and the coefficient of natural illumination, as well as studies on the light transmission ability of corrugated glass under the open sky; using hygienic and ecological arguments, justifies the usage of natural light transportation for the city of Tyumen; considers the possibility of the installation of mirrors for Tura River embankment.
The Method of Obtaining Non-Autoclaved Aerated Concrete by Hardening of Ironportland Cement, Porous with Calcium Polysulfide and Hydrazine
Authors: Elesin M , Mashkin N , Klimova S , Atlasov R
Published: April 2020

The physicochemical basis of hydration hardening of a slag portland cement mixture in a polysulfide-containing alkaline broth with the addition of hydrazine as a gasifier is studied. The combined action of the CaSn - N2H4 pair provides for the porization of the hardening mass and the increase in the hydraulic activity of the binder mass.
Method for Evaluation of Fibrous Structure Materials’ Drapability
Authors: Sheromova I A , Dremlyuga O A
Published: April 2020

The object of the article’s research is fibrous structure materials, and the subject is the method of evaluation of their drapeability. The aim of the work is to develop a new method for evaluating textile and leather materials drapability. This method is categorized as an express method, involving the use of digital technologies in research, processing of results and the possibility of forming an electronic database of the characteristic properties of the materials. The existing methodological and technical-technological approaches to determining the characteristics of mechanical properties during bending deformation were analyzed. The possibility of using wave processes in determining drapability were theoretically justified and a new method for the assessment of drapability was developed. The developed method is intended for the study of textile and leather materials. As an informative parameter in evaluating the drapability, it is proposed to use the parameters of quasi-resistant transverse vibrations generated in a certain direction on a standard size material sample. Taking into account the time spent on the experiment, the developed method can be categorized as an express method with the ability to generate an electronic database on-line. The results of the practical approbation of the proposed method for evaluating drapability, obtained by comparing the estimates formed on its basis with the data obtained based on the widely practiced method, suggest sufficient accuracy and the possibility of applying the developed research method.
Approach Heating Processes in Multiphase Gas-Hydraulic Damper
Authors: Ermolaev A , Okhulkov S , Plehov A , Titov D
Published: April 2020

The article proposes a mathematical model of temperature control of a multi-phase gas-hydraulic vibration isolator due to application of gas-regulated heat pipe. During the operation of the vibration isolator with magnetorheological transformers, mechanical energy is absorbed, which is converted into heat. The use of a gas-controlled heat pipe ensures the removal of heat from the object, the creation of an isothermal zone inside it and the temperature stabilization of the object. This ensures the preservation of the working properties of the magnetorheological fluid, in particular, its viscosity, and practically stabilizes the parameters of the amplitude-frequency characteristic of the vibration-insulator, regardless of the time of continuous operation and the ambient temperature. The article presents experimental methods for determining the thermal coefficient and rate of heating of a vibration-isolator, which allows making reasonable design decisions in the design of vibration protection systems.
Study for the Informal Settlement Supposed to Be Distributed by the Iraq Government for Poor People in Baghdad City - Republic of Iraq
Authors: Al-Jawari S M
Published: April 2020

This paper set forth the spatial suitability of the informal settlement supposed to be distributed by the Iraqis government to poor people. The Iraqi government identified 9 locations of informal settlement in Baghdad city and acceptance it as a reality as a help for them to getting home. In this paper I discovered the suitability of those locations which one will be suitable more than others for living. The analysis process was applied using the GIS environment – spatial analysis. According to the results, It has been identified as the most important measures to identify which one of these areas suitable for development for housing by using some criteria (Distance from the city center, Proximity from transport routes, Proximity of high voltage lines, locations from Railways, Location from oil and gas fields, the location from the river, the location from water services) and recommends the procedures to be carried out for the purpose of developing the informal settlement, so as to help decisions maker to select the more appropriate of those slums.
The Effect of Urban Form on Temperature for Hot Arid Zones. The Case Study of Baghdad, Iraq
Authors: Al-Mosawy S K A , Al-Jawari S M , Al-Jabari A A
Published: April 2020

The research aims to determine optimal urban planning and design indicators of the urban clusters form in hot arid zones through studying of three urban areas in Baghdad, analyzing their urban indicators which include floor area ratio (FAR), urban clusters height, building density or land coverage, green areas, paved areas, shading ratio and how they affect urban temperature.

The research reached the conclusion that air outdoor temperature on urban areas affected primarily by shadows casted on the ground, the effect of shaded area equals (5) times the effect of paved areas and (3.7) times the effect of green areas, this means that increasing urban clusters height in hot arid zones could minimize air outdoor temperature, buildings with (6) levels at minimum seems to be suitable to produce shadows in the ground plane of urban land, Increasing urban volumes in the vertical dimension height and compacting clusters or increasing FAR seem to be a smart strategy to minimize the hot dry climate effect and urban temperature.
Phase Composition and Magnetic Properties of Fast-Quenched Co-Sm-La and Co-Sm-Ce Alloys
Authors: Biragova N F , Mishenina I V , Peikarova N I
Published: April 2020

The intermetallic compounds of rare-earth metals (REM) and iron triad metals have unique properties that are increasingly exploited in cutting-edge technology both as individual materials and as phase components that give the alloy its desired properties.

Of greatest interest are the intermetallic compounds (IMC) of cobalt based on light REMs. Proper processing imbues these compounds with considerable coercivity on the order of 104E. Thus, spinning that is used for the superfast quenching of melts (v=106 K/s) can produce intermetallic compounds in microcrystal state, in which crystals have distorted crystal lattices. In such cases, phases have high coercivity. Experimentally obtained magnetization and coercivity values of fast-quenched alloys (FQA) in the Sm2Co17 plane of Co-Sm-La and Co-Sm-Ce systems are significantly higher than the equilibrium values.
Estimation of the Service Lifetime of Layered Heat-Resistant Ni-Al and Ni-Cr-Al Coatings
Authors: Taube A O , Shmorgun V G , Bogdanov A I , Storozheva E I , Solovev D B
Published: April 2020

This paper describes the method and results of calculation of the service lifetime of layered heat-resistant Ni-Al and Ni-Cr-Al coatings by known empirical methods. It is shown, that alloying the Ni-Al system coatings by Cr leads to a five-fold increase of durability at high temperatures.
Electrothermal Devices for Gas-Thermal Processing of Structural Metals and Alloys
Authors: Rodionov I , Perinskaya I , Kuts L
Published: April 2020

The provided designs of cylindrical electric resistance furnaces were designed to strengthen the heat treatment of a wide range of metal products with various applications. Special-purpose electric furnaces allow carrying out strengthening heat treatment of metal and alloy surfaces in reaction process medium comprising air, superheated water vapour, a mixture of inert and oxidising gases with the formation of thermal oxide coatings with increased indicators of both wear and corrosion resistance.
Research of Properties of Cast Austenitic Steels for Low-temperature Equipment
Authors: Vologzhanina S A , Ermakov B S , Peregudov A A
Published: April 2020

This paper considers the possibility of using Cr-Ni, Cr-Ni-Mn and Cr-Mn cast metastable austenitic steels with alloying systems of the grades 12Cr18Ni10TiL, 10Cr14Mn14Ni4TiL and 10Cr14NMn20L for the manufacture of complex-shaped parts for use in equipment operated at low temperatures. The results of tests to assess the characteristics of strength, ductility and toughness of austenitic steels in the cast state in the temperature range from plus 20 to minus 196 ° C are presented. The obtained data allow us to estimate the change in the values of the mechanical properties of cast asutenite steels with decreasing test temperature. Based on the analysis of the results obtained, recommendations were given on the use of austenitic steels in a cast state for low-temperature equipment at various operating temperatures. It is shown that metastable austenitic steel 10Cr14NMn20, in comparison with other studied steels, despite relatively low values of plasticity, has higher values of strength and toughness at mines 196 ° C and can be recommended for the manufacture of cast parts of low-temperature equipment.
Increasing Methods of the Car Valve Tappets Durability
Authors: Shveyov I A , Shveyov A I , Shveyova E I
Published: April 2020

It is established that the admissible size of wear on the restored cemented (nitrocemented) details depends on specifications on operation of the car. An indispensable condition at the same time is preservation in a blanket (a worn-out detail) of carbon not less than 0,4%. It is offered for high-speed heating of worn-out parts of details under plastic deformation to use induction installation and the offered method of restoration of pushers of valves I have shown that details meet specifications of manufacturer.
Numerical Simulation of the Force Analysis of Gas-Solid Two-Phase Sepiolite Particles in a Horizontal Pipe
Authors: Zheng Chenchen , Zhou Youhang , Liu Wei , Li Yuze , Zhu Wenmu
Published: April 2020

In order to study the force that sepiolite particles exert in a horizontal pipe, a method for analysing the simulation of the two-way coupling of gas-solid two-phase flow of sepiolite particles has been proposed in this paper. A three-dimensional model of the gas-solid two-phase flow of sepiolite particles was constructed, based on the Discrete Element Method (EDM). In this model, the force and motion of the sepiolite particles were established according to Newton’s second law, turbulent flow was simulated using the k-ε model, and the two-way coupling correlation between the sepiolite particles and the turbulent flow was established according to Newton’s third law. Through numerical simulation of the gas-solid two-phase flow of sepiolite particles in a horizontal pipe, the distribution of both the velocity and pressure were obtained. In addition, the properties of the gas-solid two-phase flow of sepiolite particles were obtained. The results of the simulation demonstrated that the main forces acting on the sepiolite particles in a horizontal circular pipe in a turbulent state were drag, lift, gravity and the buoyancy of the particles. It was found that the Basset force, the Magnus force, the additional mass force and the pressure gradient force had a negligible influence on the movement of the sepiolite particles.
Finite Element Model Modification of an Arch Bridge Based on Response Surface Method
Authors: Wang Yu Bin , Wang Lei
Published: April 2020

Usually the structure of the initial finite element model can not reflect the actual situation of structure, the finite element model updating is for the initial finite element model of the structure, according to the static and dynamic response of the structure of the measured optimize the model parameters are adjusted, the revised model response is more close to the actual structural response, so as to get a more accurate finite element model. In this paper, the finite element model of the bridge is updated by using the second order incomplete polynomial response surface model. Then determine the sample data, use the least squares method to fit the undetermined coefficients of the second-order incomplete polynomial, and perform the accuracy test. Then the objective function based on frequency is constructed, and the updated optimal design parameters are obtained by quadratic sequence programming. Finally, using the optimal design parameters for modal analysis, it is found that the frequency error has decreased. It is proved that the correction by the response surface method (RSM) can improve the accuracy of the finite element model.
Preparation and Properties of Five Biomass-based Melamine Modified Urea Formaldehyde Resins
Authors: Xu Shanfeng , Chen Yuzhu , Xiao Hui , Fu Chengang , Tan Hailu , Gu Xinyue
Published: April 2020

In this paper, shell (PS), rice husk (RH), rapeseed stalk (RS), toonaciliata wood (TW) and Sinocalamus affinis (SA) were served as the modifier to modify the melamine modified urea-formaldehyde resin (MUF). The PS, RH, RS, TW, SA were ultra-fine crushed to be the powder with less than 48 um. The reactivity of PS, RH, RS, TW, SA and formaldehyde solution was measured, and PS, RH, RS, TW, SA were added in the third stage of synthesis process of the MUF resin. The basic properties of the resin and plywood were tested. The results showed that, with addition of the PS, RH, RS, TW, SA, the reactivity with formaldehyde solution became better, while the gel time became longer, the resin viscosity and the solid content increased, and the free formaldehyde content of the resin decreased. The formaldehyde emission of the plywood decreased by 60.53%, 48.25%, 41.23%, 44.74%, 56.14%, respectively, and the wet ply strength of the plywood increased by 40.00%, 56.19%, 16.19%, 24.76%, 54.29%, respectively. The use of the ultra-fined PS, RH, RS, TW, and SA showed good effects on the formaldehyde elimination of the MUF resin.
Design of a Challenge Robot Based on Single-Chip Microcomputer
Authors: Li Tianhui , Zhang Chengliang , Zhou Guozhi , Shi Luo
Published: April 2020

The Taiwanese robot is a robotic confrontation event that has emerged in recent years. This paper proposes a design scheme for the challenge robot. This new type of challenge robot was introduced from the control device, drive device, signal acquisition device and process design of the robot, and the mechanical analysis of the key parts of the robot was carried out. Through a large number of experimental tests and competition verification, the overall structure of the robot is reasonable and the stability is high, which can quickly knock down or push down the other robot.
Study on Infrared Radiation Characteristics of Granular Mg/PTFE/NC Agent
Authors: Wang Lei , Ju Jian , Guan Hua
Published: April 2020

In order to improve the radiation radiation area of Mg-PTFE infrared bait agent and reduce the radiation intensity, the Mg/PTFE/NC particle type agent was prepared by solvent evaporation method to study the infrared radiation performance of the particle agent. The results showed that the radiation area of the granular agent increased by 60% on average and the radiation intensity decreased by 84% compared with the equal-quality powdery agent. For granules, the radiation performance increases with the increase of particle size. When the particle size increases from 690.6μm to 1048.3μm,the average radiation area increases from 139.51cm2 to 172.83cm2,and the average radiation intensity is 2.89 W• Sr−1 increased to 4.56 W•Sr−1; while the mass fraction of Mg-PTFE in the granules also increased with the increase of mass fraction, and the effect on the radiation area was small; mass fraction When increasing from 30% to 70%,the radiation intensity increases from 2.64 W•Sr−1 to 5.62 W•Sr−1.
3D Nasal Magnetic Resonance Image Registration by Maximization of Mutual Information
Authors: Tang Jiawei , Lu Wenhuan , Honda Kiyoshi
Published: April 2020

The magnetic resonance image (MRI) is widely used in medical treatment, which is harmless for human body. However, more noise than the CT image sometimes can be a problem when doctor focus on details of some narrow structure of human body such as nasal. It is necessary to process the MRI like image fusion before using it. Subjects have to move head during a few MR scans. Image registration can help all corresponding points find their own correct position, so that it can be processed and give us more information from not only one time scan. Mutual information is a good mathematics tool in statistics and information theory. It can describe the relationship between input signal and output signal. In this paper, they are reference image data set and float image data set, and the process between them are some little bit head move and some other influence during scanning. The rigid body transformation is used to reduce the impact of head move because the nasal consisting of bones almost don’t changes shape during scan. Registered images from another scan and reference image can get together to be used in image fusion and reconstruction.
A Survey on Privacy-Preserving Data Mining Methods
Authors: Yang Yunlu , Zhou Yajian
Published: April 2020

In recent years, the increase in massive data in various fields has promoted the development of data mining. Still, the storage and mining of user data bring about the threat of privacy leakage. Researches on privacy-preserving data mining have become an increasingly significant research area. Focusing on the hidden dangers of privacy leakage in data mining methods, three leading privacy-preserving technologies came into being, which are data distortion technology, data encryption technology, and restricted publication technology. In this paper, we introduce and summarize the latest researches based on these privacy-preserving technologies. Besides, we describe the state-of-art research trends on privacy-preserving data mining methods in image processing and natural language processing.
Driver Distraction Behavior Detection Method Based on Deep Learning
Authors: Mao Peng , Zhang Kunlun , Liang Da
Published: April 2020

With the rapid development of road traffic in China, driver safety accidents caused by road traffic accidents are increasing year by year. According to statistics of relevant departments, 20%-30% of traffic safety accidents are caused by distracted behaviors of drivers. For this reason, this paper proposes a driver distraction behavior detection method based on deep learning, which uses PCN and DSST algorithms for face detection, location and dynamic face tracking. Finally, YOLOV3 object detection algorithm is used to identify distracting behaviors such as smoking and making phone calls around a person’s face. The method can detect distracted behaviors in the driving process in real time and has high detection accuracy.
Study of All Solution Processed Exciplex Organic Light-Emitting Diode
Authors: Zhao Juewen , Huang Youchao , Guo Jing , Zhang Ning , Zheng Caijun , Du Xiaoyang , Lin Hui , Tao Silu
Published: April 2020

Organic light-emitting diodes (OLEDs) are widely used in full-color display panels, fluorescent tubes and solid-state lighting devices. In recent years, due to the material utilization yield of the vacuum deposition method is very low and maintaining a high vacuum further increases the fabrication cost and complexity, solution processing method has become a research hotspot. However, the development of solution-processed OLEDs has a great challenge in multilayer structure formation and nearly all prior reports on solution-processed OLEDs were utilizing a vacuum deposited electron-transport layer (ETL). Therefore, it is of great significance to further research on all solution-processed OLEDs whose ETL were spin-coated. In this paper, spin-coated ETL based OLED with high current efficiency that comparable with vacuum deposited ETL based OLED were successfully achieved.